net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2021 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
  68                            struct net *netns, struct nlattr **attrs)
  69 {
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id = 0;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         if (rdev) {
  88                 struct wireless_dev *wdev;
  89
  90                 lockdep_assert_held(&rdev->wiphy.mtx);
  91
  92                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  93                         if (have_ifidx && wdev->netdev &&
  94                             wdev->netdev->ifindex == ifidx) {
  95                                 result = wdev;
  96                                 break;
  97                         }
  98                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                 }
 103
 104                 return result ?: ERR_PTR(-ENODEV);
 105         }
 106
 107         ASSERT_RTNL();
 108
 109         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
 110                 struct wireless_dev *wdev;
 111
 112                 if (wiphy_net(&rdev->wiphy) != netns)
 113                         continue;
 114
 115                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 116                         continue;
 117
 118                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
 119                         if (have_ifidx && wdev->netdev &&
 120                             wdev->netdev->ifindex == ifidx) {
 121                                 result = wdev;
 122                                 break;
 123                         }
 124                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 125                                 result = wdev;
 126                                 break;
 127                         }
 128                 }
 129
 130                 if (result)
 131                         break;
 132         }
 133
 134         if (result)
 135                 return result;
 136         return ERR_PTR(-ENODEV);
 137 }
 138
 139 static struct cfg80211_registered_device *
 140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 141 {
 142         struct cfg80211_registered_device *rdev = NULL, *tmp;
 143         struct net_device *netdev;
 144
 145         ASSERT_RTNL();
 146
 147         if (!attrs[NL80211_ATTR_WIPHY] &&
 148             !attrs[NL80211_ATTR_IFINDEX] &&
 149             !attrs[NL80211_ATTR_WDEV])
 150                 return ERR_PTR(-EINVAL);
 151
 152         if (attrs[NL80211_ATTR_WIPHY])
 153                 rdev = cfg80211_rdev_by_wiphy_idx(
 154                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 155
 156         if (attrs[NL80211_ATTR_WDEV]) {
 157                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 158                 struct wireless_dev *wdev;
 159                 bool found = false;
 160
 161                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 162                 if (tmp) {
 163                         /* make sure wdev exists */
 164                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 165                                 if (wdev->identifier != (u32)wdev_id)
 166                                         continue;
 167                                 found = true;
 168                                 break;
 169                         }
 170
 171                         if (!found)
 172                                 tmp = NULL;
 173
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176                         rdev = tmp;
 177                 }
 178         }
 179
 180         if (attrs[NL80211_ATTR_IFINDEX]) {
 181                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 182
 183                 netdev = __dev_get_by_index(netns, ifindex);
 184                 if (netdev) {
 185                         if (netdev->ieee80211_ptr)
 186                                 tmp = wiphy_to_rdev(
 187                                         netdev->ieee80211_ptr->wiphy);
 188                         else
 189                                 tmp = NULL;
 190
 191                         /* not wireless device -- return error */
 192                         if (!tmp)
 193                                 return ERR_PTR(-EINVAL);
 194
 195                         /* mismatch -- return error */
 196                         if (rdev && tmp != rdev)
 197                                 return ERR_PTR(-EINVAL);
 198
 199                         rdev = tmp;
 200                 }
 201         }
 202
 203         if (!rdev)
 204                 return ERR_PTR(-ENODEV);
 205
 206         if (netns != wiphy_net(&rdev->wiphy))
 207                 return ERR_PTR(-ENODEV);
 208
 209         return rdev;
 210 }
 211
 212 /*
 213  * This function returns a pointer to the driver
 214  * that the genl_info item that is passed refers to.
 215  *
 216  * The result of this can be a PTR_ERR and hence must
 217  * be checked with IS_ERR() for errors.
 218  */
 219 static struct cfg80211_registered_device *
 220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 221 {
 222         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 223 }
 224
 225 static int validate_beacon_head(const struct nlattr *attr,
 226                                 struct netlink_ext_ack *extack)
 227 {
 228         const u8 *data = nla_data(attr);
 229         unsigned int len = nla_len(attr);
 230         const struct element *elem;
 231         const struct ieee80211_mgmt *mgmt = (void *)data;
 232         unsigned int fixedlen, hdrlen;
 233         bool s1g_bcn;
 234
 235         if (len < offsetofend(typeof(*mgmt), frame_control))
 236                 goto err;
 237
 238         s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 239         if (s1g_bcn) {
 240                 fixedlen = offsetof(struct ieee80211_ext,
 241                                     u.s1g_beacon.variable);
 242                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 243         } else {
 244                 fixedlen = offsetof(struct ieee80211_mgmt,
 245                                     u.beacon.variable);
 246                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 247         }
 248
 249         if (len < fixedlen)
 250                 goto err;
 251
 252         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 253                 goto err;
 254
 255         data += fixedlen;
 256         len -= fixedlen;
 257
 258         for_each_element(elem, data, len) {
 259                 /* nothing */
 260         }
 261
 262         if (for_each_element_completed(elem, data, len))
 263                 return 0;
 264
 265 err:
 266         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 267         return -EINVAL;
 268 }
 269
 270 static int validate_ie_attr(const struct nlattr *attr,
 271                             struct netlink_ext_ack *extack)
 272 {
 273         const u8 *data = nla_data(attr);
 274         unsigned int len = nla_len(attr);
 275         const struct element *elem;
 276
 277         for_each_element(elem, data, len) {
 278                 /* nothing */
 279         }
 280
 281         if (for_each_element_completed(elem, data, len))
 282                 return 0;
 283
 284         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 285         return -EINVAL;
 286 }
 287
 288 /* policy for the attributes */
 289 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 290
 291 static const struct nla_policy
 292 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 293         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 294         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 295                                         .len = U8_MAX },
 296         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 297                                              .len = U8_MAX },
 298 };
 299
 300 static const struct nla_policy
 301 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 302         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 303         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 304         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 305                 NLA_POLICY_MAX(NLA_U8, 15),
 306         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 307         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 308                 NLA_POLICY_MAX(NLA_U8, 15),
 309         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 310                 NLA_POLICY_MAX(NLA_U8, 31),
 311         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 312         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 313         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 314         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 315         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 316         [NL80211_PMSR_FTM_REQ_ATTR_LMR_FEEDBACK] = { .type = NLA_FLAG },
 317 };
 318
 319 static const struct nla_policy
 320 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 321         [NL80211_PMSR_TYPE_FTM] =
 322                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 323 };
 324
 325 static const struct nla_policy
 326 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 327         [NL80211_PMSR_REQ_ATTR_DATA] =
 328                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 329         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 330 };
 331
 332 static const struct nla_policy
 333 nl80211_pmsr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 334         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 335         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 336         [NL80211_PMSR_PEER_ATTR_REQ] =
 337                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 338         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 343         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 344         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 345         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 346         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 347         [NL80211_PMSR_ATTR_PEERS] =
 348                 NLA_POLICY_NESTED_ARRAY(nl80211_pmsr_peer_attr_policy),
 349 };
 350
 351 static const struct nla_policy
 352 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 353         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 354                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 355         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 356                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 357         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 358                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 359         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 360                 NLA_POLICY_EXACT_LEN(8),
 361         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 362                 NLA_POLICY_EXACT_LEN(8),
 363         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 364 };
 365
 366 static const struct nla_policy
 367 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 368         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 369         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 370         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 371 };
 372
 373 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 374         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 375                                     .len = NL80211_MAX_SUPP_RATES },
 376         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 377                                 .len = NL80211_MAX_SUPP_HT_RATES },
 378         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 379         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 380         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 381         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 382                                                    NL80211_RATE_INFO_HE_GI_0_8,
 383                                                    NL80211_RATE_INFO_HE_GI_3_2),
 384         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 385                                                    NL80211_RATE_INFO_HE_1XLTF,
 386                                                    NL80211_RATE_INFO_HE_4XLTF),
 387 };
 388
 389 static const struct nla_policy
 390 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 391         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 392         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 393         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 394         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 395         [NL80211_TID_CONFIG_ATTR_NOACK] =
 396                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 397         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 398         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 399         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 400                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 401         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 402                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 403         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 404                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 405         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 406                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 407         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 408                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 409 };
 410
 411 static const struct nla_policy
 412 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 413         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 414         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 415         [NL80211_FILS_DISCOVERY_ATTR_TMPL] =
 416                         NLA_POLICY_RANGE(NLA_BINARY,
 417                                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 418                                          IEEE80211_MAX_DATA_LEN),
 419 };
 420
 421 static const struct nla_policy
 422 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 423         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 424         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 425                                                        .len = IEEE80211_MAX_DATA_LEN }
 426 };
 427
 428 static const struct nla_policy
 429 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 430         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 431         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 432 };
 433
 434 static const struct nla_policy
 435 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 436         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 437         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 438 };
 439
 440 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 441         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 442         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 443         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 444                                       .len = 20-1 },
 445         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 446
 447         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 448         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 449         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 450                                                 NL80211_EDMG_CHANNELS_MIN,
 451                                                 NL80211_EDMG_CHANNELS_MAX),
 452         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 453                                                 NL80211_EDMG_BW_CONFIG_MIN,
 454                                                 NL80211_EDMG_BW_CONFIG_MAX),
 455
 456         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 457         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 458         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 459         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 460
 461         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 462         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 463         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 464         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 465         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 466         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 467
 468         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 469         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 470         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 471
 472         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 473         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 474
 475         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 476         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 477                                     .len = WLAN_MAX_KEY_LEN },
 478         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 479         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 480         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 481         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 482         [NL80211_ATTR_KEY_TYPE] =
 483                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 484
 485         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 486         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 487         [NL80211_ATTR_BEACON_HEAD] =
 488                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 489                                        IEEE80211_MAX_DATA_LEN),
 490         [NL80211_ATTR_BEACON_TAIL] =
 491                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 492                                        IEEE80211_MAX_DATA_LEN),
 493         [NL80211_ATTR_STA_AID] =
 494                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 495         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 496         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 497         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 498                                                .len = NL80211_MAX_SUPP_RATES },
 499         [NL80211_ATTR_STA_PLINK_ACTION] =
 500                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 501         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 502                 NLA_POLICY_RANGE(NLA_U8,
 503                                  NL80211_TX_POWER_AUTOMATIC,
 504                                  NL80211_TX_POWER_FIXED),
 505         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 506         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 507         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 508         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 509                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 510         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 511
 512         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 513         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 514
 515         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 516         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 517         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 518         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 519                                            .len = NL80211_MAX_SUPP_RATES },
 520         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 521
 522         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 523         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 524
 525         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 526
 527         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 528         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 529                                                    validate_ie_attr,
 530                                                    IEEE80211_MAX_DATA_LEN),
 531         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 532         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 533
 534         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 535                                 .len = IEEE80211_MAX_SSID_LEN },
 536         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 537         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 538         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 539         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 540         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 541                                                   NL80211_MFP_NO,
 542                                                   NL80211_MFP_OPTIONAL),
 543         [NL80211_ATTR_STA_FLAGS2] = {
 544                 .len = sizeof(struct nl80211_sta_flag_update),
 545         },
 546         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 547         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 548         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 549         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 550         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 551         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 552         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 553         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 554         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 555         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 556         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 557         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 558         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 559         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 560         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 561                                  .len = IEEE80211_MAX_DATA_LEN },
 562         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 563         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 564                                                    NL80211_PS_DISABLED,
 565                                                    NL80211_PS_ENABLED),
 566         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 567         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 568         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 569         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 570         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 571         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 572         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 573         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 574         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 575         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 576         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 577         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 578         [NL80211_ATTR_STA_PLINK_STATE] =
 579                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 580         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 581         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 582         [NL80211_ATTR_MESH_PEER_AID] =
 583                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 584         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 585         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 586         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 587         [NL80211_ATTR_HIDDEN_SSID] =
 588                 NLA_POLICY_RANGE(NLA_U32,
 589                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 590                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 591         [NL80211_ATTR_IE_PROBE_RESP] =
 592                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 593                                        IEEE80211_MAX_DATA_LEN),
 594         [NL80211_ATTR_IE_ASSOC_RESP] =
 595                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 596                                        IEEE80211_MAX_DATA_LEN),
 597         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 598         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 599         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 600         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 601         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 602         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 603         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 604         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 605         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 606         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 607         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 608                                       .len = IEEE80211_MAX_DATA_LEN },
 609         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 610         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 611         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 612                 .len = NL80211_HT_CAPABILITY_LEN
 613         },
 614         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 615         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 616         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 617         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 618         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 619
 620         /* need to include at least Auth Transaction and Status Code */
 621         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 622
 623         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 624         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 625         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 626         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 627         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 628                 NLA_POLICY_RANGE(NLA_U32,
 629                                  NL80211_MESH_POWER_UNKNOWN + 1,
 630                                  NL80211_MESH_POWER_MAX),
 631         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 632         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 633         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 634         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 635         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 636         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 637         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 638                 .len = NL80211_VHT_CAPABILITY_LEN,
 639         },
 640         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 641         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 642                                   .len = IEEE80211_MAX_DATA_LEN },
 643         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 644         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 645                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 646         [NL80211_ATTR_PEER_AID] =
 647                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 648         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 649         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 650         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 651         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 652         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 653         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 654         /*
 655          * The value of the Length field of the Supported Operating
 656          * Classes element is between 2 and 253.
 657          */
 658         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 659                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 660         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 661         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 662         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 663         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 664         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 665         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 666                                                   IEEE80211_QOS_MAP_LEN_MIN,
 667                                                   IEEE80211_QOS_MAP_LEN_MAX),
 668         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 669         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 670         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 671         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 672         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 673         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 674         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 675         [NL80211_ATTR_USER_PRIO] =
 676                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 677         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 678         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 679         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 680         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 681         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 682         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 683         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 684         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 685         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 686         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 687         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 688                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 689         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 690                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 691         },
 692         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 693         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 694         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 695         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 696         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 697                                     .len = FILS_MAX_KEK_LEN },
 698         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 699         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 700         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 701         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 702         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 703                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 704         },
 705         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 706         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 707                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 708         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 709                                           .len = FILS_ERP_MAX_REALM_LEN },
 710         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 711         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 712                                         .len = FILS_ERP_MAX_RRK_LEN },
 713         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 714         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 715         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 716         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 717         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 718
 719         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 720         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 721         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 722         [NL80211_ATTR_HE_CAPABILITY] =
 723                 NLA_POLICY_RANGE(NLA_BINARY,
 724                                  NL80211_HE_MIN_CAPABILITY_LEN,
 725                                  NL80211_HE_MAX_CAPABILITY_LEN),
 726         [NL80211_ATTR_FTM_RESPONDER] =
 727                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 728         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 729         [NL80211_ATTR_PEER_MEASUREMENTS] =
 730                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 731         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 732         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 733                                         .len = SAE_PASSWORD_MAX_LEN },
 734         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 735         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 736         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 737         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 738         [NL80211_ATTR_TID_CONFIG] =
 739                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 740         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 741         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 742         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 743         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 744         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 745         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 746         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 747                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 748         [NL80211_ATTR_FILS_DISCOVERY] =
 749                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 750         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 751                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 752         [NL80211_ATTR_S1G_CAPABILITY] =
 753                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 754         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 755                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 756         [NL80211_ATTR_SAE_PWE] =
 757                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 758                                  NL80211_SAE_PWE_BOTH),
 759         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 760         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 761         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 762 };
 763
 764 /* policy for the key attributes */
 765 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 766         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 767         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 768         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 769         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 770         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 771         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 772         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 773         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 774         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 775 };
 776
 777 /* policy for the key default flags */
 778 static const struct nla_policy
 779 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 780         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 781         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 782 };
 783
 784 #ifdef CONFIG_PM
 785 /* policy for WoWLAN attributes */
 786 static const struct nla_policy
 787 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 788         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 789         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 790         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 791         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 792         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 793         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 794         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 795         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 796         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 797         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 798 };
 799
 800 static const struct nla_policy
 801 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 802         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 803         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 804         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 805         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 806         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 807         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 808         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 809                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 810         },
 811         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 812                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 813         },
 814         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 815         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 816         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 817 };
 818 #endif /* CONFIG_PM */
 819
 820 /* policy for coalesce rule attributes */
 821 static const struct nla_policy
 822 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 823         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 824         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 825                 NLA_POLICY_RANGE(NLA_U32,
 826                                  NL80211_COALESCE_CONDITION_MATCH,
 827                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 828         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 829 };
 830
 831 /* policy for GTK rekey offload attributes */
 832 static const struct nla_policy
 833 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 834         [NL80211_REKEY_DATA_KEK] = {
 835                 .type = NLA_BINARY,
 836                 .len = NL80211_KEK_EXT_LEN
 837         },
 838         [NL80211_REKEY_DATA_KCK] = {
 839                 .type = NLA_BINARY,
 840                 .len = NL80211_KCK_EXT_LEN
 841         },
 842         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 843         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 844 };
 845
 846 static const struct nla_policy
 847 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 848         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 849         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 850         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 851         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 852 };
 853
 854 static const struct nla_policy
 855 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 856         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 857                                                  .len = IEEE80211_MAX_SSID_LEN },
 858         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 859         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 860         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 861                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 862 };
 863
 864 static const struct nla_policy
 865 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 866         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 867         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 868 };
 869
 870 static const struct nla_policy
 871 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 872         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 873         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 874         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 875                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 876         },
 877 };
 878
 879 /* policy for NAN function attributes */
 880 static const struct nla_policy
 881 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 882         [NL80211_NAN_FUNC_TYPE] =
 883                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 884         [NL80211_NAN_FUNC_SERVICE_ID] = {
 885                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 886         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 887         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 888         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 889         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 890         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 891         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 892         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 893         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 894         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 895                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 896         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 897         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 898         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 899         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 900         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 901 };
 902
 903 /* policy for Service Response Filter attributes */
 904 static const struct nla_policy
 905 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 906         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 907         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 908                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 909         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 910         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 911 };
 912
 913 /* policy for packet pattern attributes */
 914 static const struct nla_policy
 915 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 916         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 917         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 918         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 919 };
 920
 921 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 922                               struct cfg80211_registered_device **rdev,
 923                               struct wireless_dev **wdev)
 924 {
 925         int err;
 926
 927         if (!cb->args[0]) {
 928                 struct nlattr **attrbuf;
 929
 930                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 931                                   GFP_KERNEL);
 932                 if (!attrbuf)
 933                         return -ENOMEM;
 934
 935                 err = nlmsg_parse_deprecated(cb->nlh,
 936                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 937                                              attrbuf, nl80211_fam.maxattr,
 938                                              nl80211_policy, NULL);
 939                 if (err) {
 940                         kfree(attrbuf);
 941                         return err;
 942                 }
 943
 944                 rtnl_lock();
 945                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
 946                                                    attrbuf);
 947                 kfree(attrbuf);
 948                 if (IS_ERR(*wdev)) {
 949                         rtnl_unlock();
 950                         return PTR_ERR(*wdev);
 951                 }
 952                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 953                 mutex_lock(&(*rdev)->wiphy.mtx);
 954                 rtnl_unlock();
 955                 /* 0 is the first index - add 1 to parse only once */
 956                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 957                 cb->args[1] = (*wdev)->identifier;
 958         } else {
 959                 /* subtract the 1 again here */
 960                 struct wiphy *wiphy;
 961                 struct wireless_dev *tmp;
 962
 963                 rtnl_lock();
 964                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 965                 if (!wiphy) {
 966                         rtnl_unlock();
 967                         return -ENODEV;
 968                 }
 969                 *rdev = wiphy_to_rdev(wiphy);
 970                 *wdev = NULL;
 971
 972                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 973                         if (tmp->identifier == cb->args[1]) {
 974                                 *wdev = tmp;
 975                                 break;
 976                         }
 977                 }
 978
 979                 if (!*wdev) {
 980                         rtnl_unlock();
 981                         return -ENODEV;
 982                 }
 983                 mutex_lock(&(*rdev)->wiphy.mtx);
 984                 rtnl_unlock();
 985         }
 986
 987         return 0;
 988 }
 989
 990 /* message building helper */
 991 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 992                      int flags, u8 cmd)
 993 {
 994         /* since there is no private header just add the generic one */
 995         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 996 }
 997
 998 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 999                                      const struct ieee80211_reg_rule *rule)
1000 {
1001         int j;
1002         struct nlattr *nl_wmm_rules =
1003                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1004
1005         if (!nl_wmm_rules)
1006                 goto nla_put_failure;
1007
1008         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1009                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1010
1011                 if (!nl_wmm_rule)
1012                         goto nla_put_failure;
1013
1014                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1015                                 rule->wmm_rule.client[j].cw_min) ||
1016                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1017                                 rule->wmm_rule.client[j].cw_max) ||
1018                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1019                                rule->wmm_rule.client[j].aifsn) ||
1020                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1021                                 rule->wmm_rule.client[j].cot))
1022                         goto nla_put_failure;
1023
1024                 nla_nest_end(msg, nl_wmm_rule);
1025         }
1026         nla_nest_end(msg, nl_wmm_rules);
1027
1028         return 0;
1029
1030 nla_put_failure:
1031         return -ENOBUFS;
1032 }
1033
1034 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1035                                    struct ieee80211_channel *chan,
1036                                    bool large)
1037 {
1038         /* Some channels must be completely excluded from the
1039          * list to protect old user-space tools from breaking
1040          */
1041         if (!large && chan->flags &
1042             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1043                 return 0;
1044         if (!large && chan->freq_offset)
1045                 return 0;
1046
1047         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1048                         chan->center_freq))
1049                 goto nla_put_failure;
1050
1051         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1052                 goto nla_put_failure;
1053
1054         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1055             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1056                 goto nla_put_failure;
1057         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1058                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1059                         goto nla_put_failure;
1060                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1061                         goto nla_put_failure;
1062         }
1063         if (chan->flags & IEEE80211_CHAN_RADAR) {
1064                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1065                         goto nla_put_failure;
1066                 if (large) {
1067                         u32 time;
1068
1069                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1070
1071                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1072                                         chan->dfs_state))
1073                                 goto nla_put_failure;
1074                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1075                                         time))
1076                                 goto nla_put_failure;
1077                         if (nla_put_u32(msg,
1078                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1079                                         chan->dfs_cac_ms))
1080                                 goto nla_put_failure;
1081                 }
1082         }
1083
1084         if (large) {
1085                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1086                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1087                         goto nla_put_failure;
1088                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1089                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1090                         goto nla_put_failure;
1091                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1092                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1093                         goto nla_put_failure;
1094                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1095                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1096                         goto nla_put_failure;
1097                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1098                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1099                         goto nla_put_failure;
1100                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1101                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1102                         goto nla_put_failure;
1103                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1104                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1105                         goto nla_put_failure;
1106                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1107                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1108                         goto nla_put_failure;
1109                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1110                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1111                         goto nla_put_failure;
1112                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1113                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1114                         goto nla_put_failure;
1115                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1116                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1117                         goto nla_put_failure;
1118                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1119                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1120                         goto nla_put_failure;
1121                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1122                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1123                         goto nla_put_failure;
1124                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1125                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1126                         goto nla_put_failure;
1127         }
1128
1129         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1130                         DBM_TO_MBM(chan->max_power)))
1131                 goto nla_put_failure;
1132
1133         if (large) {
1134                 const struct ieee80211_reg_rule *rule =
1135                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1136
1137                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1138                         if (nl80211_msg_put_wmm_rules(msg, rule))
1139                                 goto nla_put_failure;
1140                 }
1141         }
1142
1143         return 0;
1144
1145  nla_put_failure:
1146         return -ENOBUFS;
1147 }
1148
1149 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1150                                   struct cfg80211_txq_stats *txqstats,
1151                                   int attrtype)
1152 {
1153         struct nlattr *txqattr;
1154
1155 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1156         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1157             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1158                 return false;                                             \
1159         } while (0)
1160
1161         txqattr = nla_nest_start_noflag(msg, attrtype);
1162         if (!txqattr)
1163                 return false;
1164
1165         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1166         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1167         PUT_TXQVAL_U32(FLOWS, flows);
1168         PUT_TXQVAL_U32(DROPS, drops);
1169         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1170         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1171         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1172         PUT_TXQVAL_U32(COLLISIONS, collisions);
1173         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1174         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1175         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1176         nla_nest_end(msg, txqattr);
1177
1178 #undef PUT_TXQVAL_U32
1179         return true;
1180 }
1181
1182 /* netlink command implementations */
1183
1184 struct key_parse {
1185         struct key_params p;
1186         int idx;
1187         int type;
1188         bool def, defmgmt, defbeacon;
1189         bool def_uni, def_multi;
1190 };
1191
1192 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1193                                  struct key_parse *k)
1194 {
1195         struct nlattr *tb[NL80211_KEY_MAX + 1];
1196         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1197                                               nl80211_key_policy,
1198                                               info->extack);
1199         if (err)
1200                 return err;
1201
1202         k->def = !!tb[NL80211_KEY_DEFAULT];
1203         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1204         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1205
1206         if (k->def) {
1207                 k->def_uni = true;
1208                 k->def_multi = true;
1209         }
1210         if (k->defmgmt || k->defbeacon)
1211                 k->def_multi = true;
1212
1213         if (tb[NL80211_KEY_IDX])
1214                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1215
1216         if (tb[NL80211_KEY_DATA]) {
1217                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1218                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1219         }
1220
1221         if (tb[NL80211_KEY_SEQ]) {
1222                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1223                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1224         }
1225
1226         if (tb[NL80211_KEY_CIPHER])
1227                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1228
1229         if (tb[NL80211_KEY_TYPE])
1230                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1231
1232         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1233                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1234
1235                 err = nla_parse_nested_deprecated(kdt,
1236                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1237                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1238                                                   nl80211_key_default_policy,
1239                                                   info->extack);
1240                 if (err)
1241                         return err;
1242
1243                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1244                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1245         }
1246
1247         if (tb[NL80211_KEY_MODE])
1248                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1249
1250         return 0;
1251 }
1252
1253 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1254 {
1255         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1256                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1257                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1258         }
1259
1260         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1261                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1262                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1263         }
1264
1265         if (info->attrs[NL80211_ATTR_KEY_IDX])
1266                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1267
1268         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1269                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1270
1271         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1272         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1273
1274         if (k->def) {
1275                 k->def_uni = true;
1276                 k->def_multi = true;
1277         }
1278         if (k->defmgmt)
1279                 k->def_multi = true;
1280
1281         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1282                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1283
1284         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1285                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1286                 int err = nla_parse_nested_deprecated(kdt,
1287                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1288                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1289                                                       nl80211_key_default_policy,
1290                                                       info->extack);
1291                 if (err)
1292                         return err;
1293
1294                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1295                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1296         }
1297
1298         return 0;
1299 }
1300
1301 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1302 {
1303         int err;
1304
1305         memset(k, 0, sizeof(*k));
1306         k->idx = -1;
1307         k->type = -1;
1308
1309         if (info->attrs[NL80211_ATTR_KEY])
1310                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1311         else
1312                 err = nl80211_parse_key_old(info, k);
1313
1314         if (err)
1315                 return err;
1316
1317         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1318             (k->defbeacon ? 1 : 0) > 1) {
1319                 GENL_SET_ERR_MSG(info,
1320                                  "key with multiple default flags is invalid");
1321                 return -EINVAL;
1322         }
1323
1324         if (k->defmgmt || k->defbeacon) {
1325                 if (k->def_uni || !k->def_multi) {
1326                         GENL_SET_ERR_MSG(info,
1327                                          "defmgmt/defbeacon key must be mcast");
1328                         return -EINVAL;
1329                 }
1330         }
1331
1332         if (k->idx != -1) {
1333                 if (k->defmgmt) {
1334                         if (k->idx < 4 || k->idx > 5) {
1335                                 GENL_SET_ERR_MSG(info,
1336                                                  "defmgmt key idx not 4 or 5");
1337                                 return -EINVAL;
1338                         }
1339                 } else if (k->defbeacon) {
1340                         if (k->idx < 6 || k->idx > 7) {
1341                                 GENL_SET_ERR_MSG(info,
1342                                                  "defbeacon key idx not 6 or 7");
1343                                 return -EINVAL;
1344                         }
1345                 } else if (k->def) {
1346                         if (k->idx < 0 || k->idx > 3) {
1347                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1348                                 return -EINVAL;
1349                         }
1350                 } else {
1351                         if (k->idx < 0 || k->idx > 7) {
1352                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1353                                 return -EINVAL;
1354                         }
1355                 }
1356         }
1357
1358         return 0;
1359 }
1360
1361 static struct cfg80211_cached_keys *
1362 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1363                        struct genl_info *info, bool *no_ht)
1364 {
1365         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1366         struct key_parse parse;
1367         struct nlattr *key;
1368         struct cfg80211_cached_keys *result;
1369         int rem, err, def = 0;
1370         bool have_key = false;
1371
1372         nla_for_each_nested(key, keys, rem) {
1373                 have_key = true;
1374                 break;
1375         }
1376
1377         if (!have_key)
1378                 return NULL;
1379
1380         result = kzalloc(sizeof(*result), GFP_KERNEL);
1381         if (!result)
1382                 return ERR_PTR(-ENOMEM);
1383
1384         result->def = -1;
1385
1386         nla_for_each_nested(key, keys, rem) {
1387                 memset(&parse, 0, sizeof(parse));
1388                 parse.idx = -1;
1389
1390                 err = nl80211_parse_key_new(info, key, &parse);
1391                 if (err)
1392                         goto error;
1393                 err = -EINVAL;
1394                 if (!parse.p.key)
1395                         goto error;
1396                 if (parse.idx < 0 || parse.idx > 3) {
1397                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1398                         goto error;
1399                 }
1400                 if (parse.def) {
1401                         if (def) {
1402                                 GENL_SET_ERR_MSG(info,
1403                                                  "only one key can be default");
1404                                 goto error;
1405                         }
1406                         def = 1;
1407                         result->def = parse.idx;
1408                         if (!parse.def_uni || !parse.def_multi)
1409                                 goto error;
1410                 } else if (parse.defmgmt)
1411                         goto error;
1412                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1413                                                      parse.idx, false, NULL);
1414                 if (err)
1415                         goto error;
1416                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1417                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1418                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1419                         err = -EINVAL;
1420                         goto error;
1421                 }
1422                 result->params[parse.idx].cipher = parse.p.cipher;
1423                 result->params[parse.idx].key_len = parse.p.key_len;
1424                 result->params[parse.idx].key = result->data[parse.idx];
1425                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1426
1427                 /* must be WEP key if we got here */
1428                 if (no_ht)
1429                         *no_ht = true;
1430         }
1431
1432         if (result->def < 0) {
1433                 err = -EINVAL;
1434                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1435                 goto error;
1436         }
1437
1438         return result;
1439  error:
1440         kfree(result);
1441         return ERR_PTR(err);
1442 }
1443
1444 static int nl80211_key_allowed(struct wireless_dev *wdev)
1445 {
1446         ASSERT_WDEV_LOCK(wdev);
1447
1448         switch (wdev->iftype) {
1449         case NL80211_IFTYPE_AP:
1450         case NL80211_IFTYPE_AP_VLAN:
1451         case NL80211_IFTYPE_P2P_GO:
1452         case NL80211_IFTYPE_MESH_POINT:
1453                 break;
1454         case NL80211_IFTYPE_ADHOC:
1455         case NL80211_IFTYPE_STATION:
1456         case NL80211_IFTYPE_P2P_CLIENT:
1457                 if (!wdev->current_bss)
1458                         return -ENOLINK;
1459                 break;
1460         case NL80211_IFTYPE_UNSPECIFIED:
1461         case NL80211_IFTYPE_OCB:
1462         case NL80211_IFTYPE_MONITOR:
1463         case NL80211_IFTYPE_NAN:
1464         case NL80211_IFTYPE_P2P_DEVICE:
1465         case NL80211_IFTYPE_WDS:
1466         case NUM_NL80211_IFTYPES:
1467                 return -EINVAL;
1468         }
1469
1470         return 0;
1471 }
1472
1473 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1474                                                         u32 freq)
1475 {
1476         struct ieee80211_channel *chan;
1477
1478         chan = ieee80211_get_channel_khz(wiphy, freq);
1479         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1480                 return NULL;
1481         return chan;
1482 }
1483
1484 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1485 {
1486         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1487         int i;
1488
1489         if (!nl_modes)
1490                 goto nla_put_failure;
1491
1492         i = 0;
1493         while (ifmodes) {
1494                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1495                         goto nla_put_failure;
1496                 ifmodes >>= 1;
1497                 i++;
1498         }
1499
1500         nla_nest_end(msg, nl_modes);
1501         return 0;
1502
1503 nla_put_failure:
1504         return -ENOBUFS;
1505 }
1506
1507 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1508                                           struct sk_buff *msg,
1509                                           bool large)
1510 {
1511         struct nlattr *nl_combis;
1512         int i, j;
1513
1514         nl_combis = nla_nest_start_noflag(msg,
1515                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1516         if (!nl_combis)
1517                 goto nla_put_failure;
1518
1519         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1520                 const struct ieee80211_iface_combination *c;
1521                 struct nlattr *nl_combi, *nl_limits;
1522
1523                 c = &wiphy->iface_combinations[i];
1524
1525                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1526                 if (!nl_combi)
1527                         goto nla_put_failure;
1528
1529                 nl_limits = nla_nest_start_noflag(msg,
1530                                                   NL80211_IFACE_COMB_LIMITS);
1531                 if (!nl_limits)
1532                         goto nla_put_failure;
1533
1534                 for (j = 0; j < c->n_limits; j++) {
1535                         struct nlattr *nl_limit;
1536
1537                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1538                         if (!nl_limit)
1539                                 goto nla_put_failure;
1540                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1541                                         c->limits[j].max))
1542                                 goto nla_put_failure;
1543                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1544                                                 c->limits[j].types))
1545                                 goto nla_put_failure;
1546                         nla_nest_end(msg, nl_limit);
1547                 }
1548
1549                 nla_nest_end(msg, nl_limits);
1550
1551                 if (c->beacon_int_infra_match &&
1552                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1553                         goto nla_put_failure;
1554                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1555                                 c->num_different_channels) ||
1556                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1557                                 c->max_interfaces))
1558                         goto nla_put_failure;
1559                 if (large &&
1560                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1561                                 c->radar_detect_widths) ||
1562                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1563                                 c->radar_detect_regions)))
1564                         goto nla_put_failure;
1565                 if (c->beacon_int_min_gcd &&
1566                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1567                                 c->beacon_int_min_gcd))
1568                         goto nla_put_failure;
1569
1570                 nla_nest_end(msg, nl_combi);
1571         }
1572
1573         nla_nest_end(msg, nl_combis);
1574
1575         return 0;
1576 nla_put_failure:
1577         return -ENOBUFS;
1578 }
1579
1580 #ifdef CONFIG_PM
1581 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1582                                         struct sk_buff *msg)
1583 {
1584         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1585         struct nlattr *nl_tcp;
1586
1587         if (!tcp)
1588                 return 0;
1589
1590         nl_tcp = nla_nest_start_noflag(msg,
1591                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1592         if (!nl_tcp)
1593                 return -ENOBUFS;
1594
1595         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1596                         tcp->data_payload_max))
1597                 return -ENOBUFS;
1598
1599         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1600                         tcp->data_payload_max))
1601                 return -ENOBUFS;
1602
1603         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1604                 return -ENOBUFS;
1605
1606         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1607                                 sizeof(*tcp->tok), tcp->tok))
1608                 return -ENOBUFS;
1609
1610         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1611                         tcp->data_interval_max))
1612                 return -ENOBUFS;
1613
1614         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1615                         tcp->wake_payload_max))
1616                 return -ENOBUFS;
1617
1618         nla_nest_end(msg, nl_tcp);
1619         return 0;
1620 }
1621
1622 static int nl80211_send_wowlan(struct sk_buff *msg,
1623                                struct cfg80211_registered_device *rdev,
1624                                bool large)
1625 {
1626         struct nlattr *nl_wowlan;
1627
1628         if (!rdev->wiphy.wowlan)
1629                 return 0;
1630
1631         nl_wowlan = nla_nest_start_noflag(msg,
1632                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1633         if (!nl_wowlan)
1634                 return -ENOBUFS;
1635
1636         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1637              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1638             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1639              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1640             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1641              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1642             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1643              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1644             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1645              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1646             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1647              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1648             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1649              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1650             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1651              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1652                 return -ENOBUFS;
1653
1654         if (rdev->wiphy.wowlan->n_patterns) {
1655                 struct nl80211_pattern_support pat = {
1656                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1657                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1658                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1659                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1660                 };
1661
1662                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1663                             sizeof(pat), &pat))
1664                         return -ENOBUFS;
1665         }
1666
1667         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1668             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1669                         rdev->wiphy.wowlan->max_nd_match_sets))
1670                 return -ENOBUFS;
1671
1672         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1673                 return -ENOBUFS;
1674
1675         nla_nest_end(msg, nl_wowlan);
1676
1677         return 0;
1678 }
1679 #endif
1680
1681 static int nl80211_send_coalesce(struct sk_buff *msg,
1682                                  struct cfg80211_registered_device *rdev)
1683 {
1684         struct nl80211_coalesce_rule_support rule;
1685
1686         if (!rdev->wiphy.coalesce)
1687                 return 0;
1688
1689         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1690         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1691         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1692         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1693         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1694         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1695
1696         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1697                 return -ENOBUFS;
1698
1699         return 0;
1700 }
1701
1702 static int
1703 nl80211_send_iftype_data(struct sk_buff *msg,
1704                          const struct ieee80211_supported_band *sband,
1705                          const struct ieee80211_sband_iftype_data *iftdata)
1706 {
1707         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1708
1709         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1710                                 iftdata->types_mask))
1711                 return -ENOBUFS;
1712
1713         if (he_cap->has_he) {
1714                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1715                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1716                             he_cap->he_cap_elem.mac_cap_info) ||
1717                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1718                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1719                             he_cap->he_cap_elem.phy_cap_info) ||
1720                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1721                             sizeof(he_cap->he_mcs_nss_supp),
1722                             &he_cap->he_mcs_nss_supp) ||
1723                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1724                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1725                         return -ENOBUFS;
1726         }
1727
1728         if (sband->band == NL80211_BAND_6GHZ &&
1729             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1730                     sizeof(iftdata->he_6ghz_capa),
1731                     &iftdata->he_6ghz_capa))
1732                 return -ENOBUFS;
1733
1734         if (iftdata->vendor_elems.data && iftdata->vendor_elems.len &&
1735             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_VENDOR_ELEMS,
1736                     iftdata->vendor_elems.len, iftdata->vendor_elems.data))
1737                 return -ENOBUFS;
1738
1739         return 0;
1740 }
1741
1742 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1743                                       struct ieee80211_supported_band *sband,
1744                                       bool large)
1745 {
1746         struct nlattr *nl_rates, *nl_rate;
1747         struct ieee80211_rate *rate;
1748         int i;
1749
1750         /* add HT info */
1751         if (sband->ht_cap.ht_supported &&
1752             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1753                      sizeof(sband->ht_cap.mcs),
1754                      &sband->ht_cap.mcs) ||
1755              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1756                          sband->ht_cap.cap) ||
1757              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1758                         sband->ht_cap.ampdu_factor) ||
1759              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1760                         sband->ht_cap.ampdu_density)))
1761                 return -ENOBUFS;
1762
1763         /* add VHT info */
1764         if (sband->vht_cap.vht_supported &&
1765             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1766                      sizeof(sband->vht_cap.vht_mcs),
1767                      &sband->vht_cap.vht_mcs) ||
1768              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1769                          sband->vht_cap.cap)))
1770                 return -ENOBUFS;
1771
1772         if (large && sband->n_iftype_data) {
1773                 struct nlattr *nl_iftype_data =
1774                         nla_nest_start_noflag(msg,
1775                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1776                 int err;
1777
1778                 if (!nl_iftype_data)
1779                         return -ENOBUFS;
1780
1781                 for (i = 0; i < sband->n_iftype_data; i++) {
1782                         struct nlattr *iftdata;
1783
1784                         iftdata = nla_nest_start_noflag(msg, i + 1);
1785                         if (!iftdata)
1786                                 return -ENOBUFS;
1787
1788                         err = nl80211_send_iftype_data(msg, sband,
1789                                                        &sband->iftype_data[i]);
1790                         if (err)
1791                                 return err;
1792
1793                         nla_nest_end(msg, iftdata);
1794                 }
1795
1796                 nla_nest_end(msg, nl_iftype_data);
1797         }
1798
1799         /* add EDMG info */
1800         if (large && sband->edmg_cap.channels &&
1801             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1802                        sband->edmg_cap.channels) ||
1803             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1804                        sband->edmg_cap.bw_config)))
1805
1806                 return -ENOBUFS;
1807
1808         /* add bitrates */
1809         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1810         if (!nl_rates)
1811                 return -ENOBUFS;
1812
1813         for (i = 0; i < sband->n_bitrates; i++) {
1814                 nl_rate = nla_nest_start_noflag(msg, i);
1815                 if (!nl_rate)
1816                         return -ENOBUFS;
1817
1818                 rate = &sband->bitrates[i];
1819                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1820                                 rate->bitrate))
1821                         return -ENOBUFS;
1822                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1823                     nla_put_flag(msg,
1824                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1825                         return -ENOBUFS;
1826
1827                 nla_nest_end(msg, nl_rate);
1828         }
1829
1830         nla_nest_end(msg, nl_rates);
1831
1832         return 0;
1833 }
1834
1835 static int
1836 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1837                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1838 {
1839         u16 stypes;
1840         struct nlattr *nl_ftypes, *nl_ifs;
1841         enum nl80211_iftype ift;
1842         int i;
1843
1844         if (!mgmt_stypes)
1845                 return 0;
1846
1847         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1848         if (!nl_ifs)
1849                 return -ENOBUFS;
1850
1851         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1852                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1853                 if (!nl_ftypes)
1854                         return -ENOBUFS;
1855                 i = 0;
1856                 stypes = mgmt_stypes[ift].tx;
1857                 while (stypes) {
1858                         if ((stypes & 1) &&
1859                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1860                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1861                                 return -ENOBUFS;
1862                         stypes >>= 1;
1863                         i++;
1864                 }
1865                 nla_nest_end(msg, nl_ftypes);
1866         }
1867
1868         nla_nest_end(msg, nl_ifs);
1869
1870         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1871         if (!nl_ifs)
1872                 return -ENOBUFS;
1873
1874         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1875                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1876                 if (!nl_ftypes)
1877                         return -ENOBUFS;
1878                 i = 0;
1879                 stypes = mgmt_stypes[ift].rx;
1880                 while (stypes) {
1881                         if ((stypes & 1) &&
1882                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1883                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1884                                 return -ENOBUFS;
1885                         stypes >>= 1;
1886                         i++;
1887                 }
1888                 nla_nest_end(msg, nl_ftypes);
1889         }
1890         nla_nest_end(msg, nl_ifs);
1891
1892         return 0;
1893 }
1894
1895 #define CMD(op, n)                                                      \
1896          do {                                                           \
1897                 if (rdev->ops->op) {                                    \
1898                         i++;                                            \
1899                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1900                                 goto nla_put_failure;                   \
1901                 }                                                       \
1902         } while (0)
1903
1904 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1905                                         struct sk_buff *msg)
1906 {
1907         int i = 0;
1908
1909         /*
1910          * do *NOT* add anything into this function, new things need to be
1911          * advertised only to new versions of userspace that can deal with
1912          * the split (and they can't possibly care about new features...
1913          */
1914         CMD(add_virtual_intf, NEW_INTERFACE);
1915         CMD(change_virtual_intf, SET_INTERFACE);
1916         CMD(add_key, NEW_KEY);
1917         CMD(start_ap, START_AP);
1918         CMD(add_station, NEW_STATION);
1919         CMD(add_mpath, NEW_MPATH);
1920         CMD(update_mesh_config, SET_MESH_CONFIG);
1921         CMD(change_bss, SET_BSS);
1922         CMD(auth, AUTHENTICATE);
1923         CMD(assoc, ASSOCIATE);
1924         CMD(deauth, DEAUTHENTICATE);
1925         CMD(disassoc, DISASSOCIATE);
1926         CMD(join_ibss, JOIN_IBSS);
1927         CMD(join_mesh, JOIN_MESH);
1928         CMD(set_pmksa, SET_PMKSA);
1929         CMD(del_pmksa, DEL_PMKSA);
1930         CMD(flush_pmksa, FLUSH_PMKSA);
1931         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1932                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1933         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1934         CMD(mgmt_tx, FRAME);
1935         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1936         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1937                 i++;
1938                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1939                         goto nla_put_failure;
1940         }
1941         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1942             rdev->ops->join_mesh) {
1943                 i++;
1944                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1945                         goto nla_put_failure;
1946         }
1947         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1948                 CMD(tdls_mgmt, TDLS_MGMT);
1949                 CMD(tdls_oper, TDLS_OPER);
1950         }
1951         if (rdev->wiphy.max_sched_scan_reqs)
1952                 CMD(sched_scan_start, START_SCHED_SCAN);
1953         CMD(probe_client, PROBE_CLIENT);
1954         CMD(set_noack_map, SET_NOACK_MAP);
1955         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1956                 i++;
1957                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1958                         goto nla_put_failure;
1959         }
1960         CMD(start_p2p_device, START_P2P_DEVICE);
1961         CMD(set_mcast_rate, SET_MCAST_RATE);
1962 #ifdef CONFIG_NL80211_TESTMODE
1963         CMD(testmode_cmd, TESTMODE);
1964 #endif
1965
1966         if (rdev->ops->connect || rdev->ops->auth) {
1967                 i++;
1968                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1969                         goto nla_put_failure;
1970         }
1971
1972         if (rdev->ops->disconnect || rdev->ops->deauth) {
1973                 i++;
1974                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1975                         goto nla_put_failure;
1976         }
1977
1978         return i;
1979  nla_put_failure:
1980         return -ENOBUFS;
1981 }
1982
1983 static int
1984 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1985                            struct sk_buff *msg)
1986 {
1987         struct nlattr *ftm;
1988
1989         if (!cap->ftm.supported)
1990                 return 0;
1991
1992         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1993         if (!ftm)
1994                 return -ENOBUFS;
1995
1996         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1997                 return -ENOBUFS;
1998         if (cap->ftm.non_asap &&
1999             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
2000                 return -ENOBUFS;
2001         if (cap->ftm.request_lci &&
2002             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
2003                 return -ENOBUFS;
2004         if (cap->ftm.request_civicloc &&
2005             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
2006                 return -ENOBUFS;
2007         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2008                         cap->ftm.preambles))
2009                 return -ENOBUFS;
2010         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2011                         cap->ftm.bandwidths))
2012                 return -ENOBUFS;
2013         if (cap->ftm.max_bursts_exponent >= 0 &&
2014             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2015                         cap->ftm.max_bursts_exponent))
2016                 return -ENOBUFS;
2017         if (cap->ftm.max_ftms_per_burst &&
2018             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2019                         cap->ftm.max_ftms_per_burst))
2020                 return -ENOBUFS;
2021         if (cap->ftm.trigger_based &&
2022             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2023                 return -ENOBUFS;
2024         if (cap->ftm.non_trigger_based &&
2025             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2026                 return -ENOBUFS;
2027
2028         nla_nest_end(msg, ftm);
2029         return 0;
2030 }
2031
2032 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2033                                   struct sk_buff *msg)
2034 {
2035         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2036         struct nlattr *pmsr, *caps;
2037
2038         if (!cap)
2039                 return 0;
2040
2041         /*
2042          * we don't need to clean up anything here since the caller
2043          * will genlmsg_cancel() if we fail
2044          */
2045
2046         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2047         if (!pmsr)
2048                 return -ENOBUFS;
2049
2050         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2051                 return -ENOBUFS;
2052
2053         if (cap->report_ap_tsf &&
2054             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2055                 return -ENOBUFS;
2056
2057         if (cap->randomize_mac_addr &&
2058             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2059                 return -ENOBUFS;
2060
2061         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2062         if (!caps)
2063                 return -ENOBUFS;
2064
2065         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2066                 return -ENOBUFS;
2067
2068         nla_nest_end(msg, caps);
2069         nla_nest_end(msg, pmsr);
2070
2071         return 0;
2072 }
2073
2074 static int
2075 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2076                               struct sk_buff *msg)
2077 {
2078         int i;
2079         struct nlattr *nested, *nested_akms;
2080         const struct wiphy_iftype_akm_suites *iftype_akms;
2081
2082         if (!rdev->wiphy.num_iftype_akm_suites ||
2083             !rdev->wiphy.iftype_akm_suites)
2084                 return 0;
2085
2086         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2087         if (!nested)
2088                 return -ENOBUFS;
2089
2090         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2091                 nested_akms = nla_nest_start(msg, i + 1);
2092                 if (!nested_akms)
2093                         return -ENOBUFS;
2094
2095                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2096
2097                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2098                                         iftype_akms->iftypes_mask))
2099                         return -ENOBUFS;
2100
2101                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2102                             sizeof(u32) * iftype_akms->n_akm_suites,
2103                             iftype_akms->akm_suites)) {
2104                         return -ENOBUFS;
2105                 }
2106                 nla_nest_end(msg, nested_akms);
2107         }
2108
2109         nla_nest_end(msg, nested);
2110
2111         return 0;
2112 }
2113
2114 static int
2115 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2116                                struct sk_buff *msg)
2117 {
2118         struct nlattr *supp;
2119
2120         if (!rdev->wiphy.tid_config_support.vif &&
2121             !rdev->wiphy.tid_config_support.peer)
2122                 return 0;
2123
2124         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2125         if (!supp)
2126                 return -ENOSPC;
2127
2128         if (rdev->wiphy.tid_config_support.vif &&
2129             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2130                               rdev->wiphy.tid_config_support.vif,
2131                               NL80211_TID_CONFIG_ATTR_PAD))
2132                 goto fail;
2133
2134         if (rdev->wiphy.tid_config_support.peer &&
2135             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2136                               rdev->wiphy.tid_config_support.peer,
2137                               NL80211_TID_CONFIG_ATTR_PAD))
2138                 goto fail;
2139
2140         /* for now we just use the same value ... makes more sense */
2141         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2142                        rdev->wiphy.tid_config_support.max_retry))
2143                 goto fail;
2144         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2145                        rdev->wiphy.tid_config_support.max_retry))
2146                 goto fail;
2147
2148         nla_nest_end(msg, supp);
2149
2150         return 0;
2151 fail:
2152         nla_nest_cancel(msg, supp);
2153         return -ENOBUFS;
2154 }
2155
2156 static int
2157 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2158                       struct sk_buff *msg)
2159 {
2160         struct nlattr *sar_capa, *specs, *sub_freq_range;
2161         u8 num_freq_ranges;
2162         int i;
2163
2164         if (!rdev->wiphy.sar_capa)
2165                 return 0;
2166
2167         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2168
2169         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2170         if (!sar_capa)
2171                 return -ENOSPC;
2172
2173         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2174                 goto fail;
2175
2176         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2177         if (!specs)
2178                 goto fail;
2179
2180         /* report supported freq_ranges */
2181         for (i = 0; i < num_freq_ranges; i++) {
2182                 sub_freq_range = nla_nest_start(msg, i + 1);
2183                 if (!sub_freq_range)
2184                         goto fail;
2185
2186                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2187                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2188                         goto fail;
2189
2190                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2191                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2192                         goto fail;
2193
2194                 nla_nest_end(msg, sub_freq_range);
2195         }
2196
2197         nla_nest_end(msg, specs);
2198         nla_nest_end(msg, sar_capa);
2199
2200         return 0;
2201 fail:
2202         nla_nest_cancel(msg, sar_capa);
2203         return -ENOBUFS;
2204 }
2205
2206 struct nl80211_dump_wiphy_state {
2207         s64 filter_wiphy;
2208         long start;
2209         long split_start, band_start, chan_start, capa_start;
2210         bool split;
2211 };
2212
2213 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2214                               enum nl80211_commands cmd,
2215                               struct sk_buff *msg, u32 portid, u32 seq,
2216                               int flags, struct nl80211_dump_wiphy_state *state)
2217 {
2218         void *hdr;
2219         struct nlattr *nl_bands, *nl_band;
2220         struct nlattr *nl_freqs, *nl_freq;
2221         struct nlattr *nl_cmds;
2222         enum nl80211_band band;
2223         struct ieee80211_channel *chan;
2224         int i;
2225         const struct ieee80211_txrx_stypes *mgmt_stypes =
2226                                 rdev->wiphy.mgmt_stypes;
2227         u32 features;
2228
2229         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2230         if (!hdr)
2231                 return -ENOBUFS;
2232
2233         if (WARN_ON(!state))
2234                 return -EINVAL;
2235
2236         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2237             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2238                            wiphy_name(&rdev->wiphy)) ||
2239             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2240                         cfg80211_rdev_list_generation))
2241                 goto nla_put_failure;
2242
2243         if (cmd != NL80211_CMD_NEW_WIPHY)
2244                 goto finish;
2245
2246         switch (state->split_start) {
2247         case 0:
2248                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2249                                rdev->wiphy.retry_short) ||
2250                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2251                                rdev->wiphy.retry_long) ||
2252                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2253                                 rdev->wiphy.frag_threshold) ||
2254                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2255                                 rdev->wiphy.rts_threshold) ||
2256                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2257                                rdev->wiphy.coverage_class) ||
2258                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2259                                rdev->wiphy.max_scan_ssids) ||
2260                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2261                                rdev->wiphy.max_sched_scan_ssids) ||
2262                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2263                                 rdev->wiphy.max_scan_ie_len) ||
2264                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2265                                 rdev->wiphy.max_sched_scan_ie_len) ||
2266                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2267                                rdev->wiphy.max_match_sets))
2268                         goto nla_put_failure;
2269
2270                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2271                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2272                         goto nla_put_failure;
2273                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2274                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2275                         goto nla_put_failure;
2276                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2277                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2278                         goto nla_put_failure;
2279                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2280                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2281                         goto nla_put_failure;
2282                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2283                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2284                         goto nla_put_failure;
2285                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2286                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2287                         goto nla_put_failure;
2288                 state->split_start++;
2289                 if (state->split)
2290                         break;
2291                 fallthrough;
2292         case 1:
2293                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2294                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2295                             rdev->wiphy.cipher_suites))
2296                         goto nla_put_failure;
2297
2298                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2299                                rdev->wiphy.max_num_pmkids))
2300                         goto nla_put_failure;
2301
2302                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2303                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2304                         goto nla_put_failure;
2305
2306                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2307                                 rdev->wiphy.available_antennas_tx) ||
2308                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2309                                 rdev->wiphy.available_antennas_rx))
2310                         goto nla_put_failure;
2311
2312                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2313                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2314                                 rdev->wiphy.probe_resp_offload))
2315                         goto nla_put_failure;
2316
2317                 if ((rdev->wiphy.available_antennas_tx ||
2318                      rdev->wiphy.available_antennas_rx) &&
2319                     rdev->ops->get_antenna) {
2320                         u32 tx_ant = 0, rx_ant = 0;
2321                         int res;
2322
2323                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2324                         if (!res) {
2325                                 if (nla_put_u32(msg,
2326                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2327                                                 tx_ant) ||
2328                                     nla_put_u32(msg,
2329                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2330                                                 rx_ant))
2331                                         goto nla_put_failure;
2332                         }
2333                 }
2334
2335                 state->split_start++;
2336                 if (state->split)
2337                         break;
2338                 fallthrough;
2339         case 2:
2340                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2341                                         rdev->wiphy.interface_modes))
2342                                 goto nla_put_failure;
2343                 state->split_start++;
2344                 if (state->split)
2345                         break;
2346                 fallthrough;
2347         case 3:
2348                 nl_bands = nla_nest_start_noflag(msg,
2349                                                  NL80211_ATTR_WIPHY_BANDS);
2350                 if (!nl_bands)
2351                         goto nla_put_failure;
2352
2353                 for (band = state->band_start;
2354                      band < (state->split ?
2355                                 NUM_NL80211_BANDS :
2356                                 NL80211_BAND_60GHZ + 1);
2357                      band++) {
2358                         struct ieee80211_supported_band *sband;
2359
2360                         /* omit higher bands for ancient software */
2361                         if (band > NL80211_BAND_5GHZ && !state->split)
2362                                 break;
2363
2364                         sband = rdev->wiphy.bands[band];
2365
2366                         if (!sband)
2367                                 continue;
2368
2369                         nl_band = nla_nest_start_noflag(msg, band);
2370                         if (!nl_band)
2371                                 goto nla_put_failure;
2372
2373                         switch (state->chan_start) {
2374                         case 0:
2375                                 if (nl80211_send_band_rateinfo(msg, sband,
2376                                                                state->split))
2377                                         goto nla_put_failure;
2378                                 state->chan_start++;
2379                                 if (state->split)
2380                                         break;
2381                                 fallthrough;
2382                         default:
2383                                 /* add frequencies */
2384                                 nl_freqs = nla_nest_start_noflag(msg,
2385                                                                  NL80211_BAND_ATTR_FREQS);
2386                                 if (!nl_freqs)
2387                                         goto nla_put_failure;
2388
2389                                 for (i = state->chan_start - 1;
2390                                      i < sband->n_channels;
2391                                      i++) {
2392                                         nl_freq = nla_nest_start_noflag(msg,
2393                                                                         i);
2394                                         if (!nl_freq)
2395                                                 goto nla_put_failure;
2396
2397                                         chan = &sband->channels[i];
2398
2399                                         if (nl80211_msg_put_channel(
2400                                                         msg, &rdev->wiphy, chan,
2401                                                         state->split))
2402                                                 goto nla_put_failure;
2403
2404                                         nla_nest_end(msg, nl_freq);
2405                                         if (state->split)
2406                                                 break;
2407                                 }
2408                                 if (i < sband->n_channels)
2409                                         state->chan_start = i + 2;
2410                                 else
2411                                         state->chan_start = 0;
2412                                 nla_nest_end(msg, nl_freqs);
2413                         }
2414
2415                         nla_nest_end(msg, nl_band);
2416
2417                         if (state->split) {
2418                                 /* start again here */
2419                                 if (state->chan_start)
2420                                         band--;
2421                                 break;
2422                         }
2423                 }
2424                 nla_nest_end(msg, nl_bands);
2425
2426                 if (band < NUM_NL80211_BANDS)
2427                         state->band_start = band + 1;
2428                 else
2429                         state->band_start = 0;
2430
2431                 /* if bands & channels are done, continue outside */
2432                 if (state->band_start == 0 && state->chan_start == 0)
2433                         state->split_start++;
2434                 if (state->split)
2435                         break;
2436                 fallthrough;
2437         case 4:
2438                 nl_cmds = nla_nest_start_noflag(msg,
2439                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2440                 if (!nl_cmds)
2441                         goto nla_put_failure;
2442
2443                 i = nl80211_add_commands_unsplit(rdev, msg);
2444                 if (i < 0)
2445                         goto nla_put_failure;
2446                 if (state->split) {
2447                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2448                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2449                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2450                                 CMD(channel_switch, CHANNEL_SWITCH);
2451                         CMD(set_qos_map, SET_QOS_MAP);
2452                         if (rdev->wiphy.features &
2453                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2454                                 CMD(add_tx_ts, ADD_TX_TS);
2455                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2456                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2457                         CMD(update_ft_ies, UPDATE_FT_IES);
2458                         if (rdev->wiphy.sar_capa)
2459                                 CMD(set_sar_specs, SET_SAR_SPECS);
2460                 }
2461 #undef CMD
2462
2463                 nla_nest_end(msg, nl_cmds);
2464                 state->split_start++;
2465                 if (state->split)
2466                         break;
2467                 fallthrough;
2468         case 5:
2469                 if (rdev->ops->remain_on_channel &&
2470                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2471                     nla_put_u32(msg,
2472                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2473                                 rdev->wiphy.max_remain_on_channel_duration))
2474                         goto nla_put_failure;
2475
2476                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2477                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2478                         goto nla_put_failure;
2479
2480                 state->split_start++;
2481                 if (state->split)
2482                         break;
2483                 fallthrough;
2484         case 6:
2485 #ifdef CONFIG_PM
2486                 if (nl80211_send_wowlan(msg, rdev, state->split))
2487                         goto nla_put_failure;
2488                 state->split_start++;
2489                 if (state->split)
2490                         break;
2491 #else
2492                 state->split_start++;
2493 #endif
2494                 fallthrough;
2495         case 7:
2496                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2497                                         rdev->wiphy.software_iftypes))
2498                         goto nla_put_failure;
2499
2500                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2501                                                    state->split))
2502                         goto nla_put_failure;
2503
2504                 state->split_start++;
2505                 if (state->split)
2506                         break;
2507                 fallthrough;
2508         case 8:
2509                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2510                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2511                                 rdev->wiphy.ap_sme_capa))
2512                         goto nla_put_failure;
2513
2514                 features = rdev->wiphy.features;
2515                 /*
2516                  * We can only add the per-channel limit information if the
2517                  * dump is split, otherwise it makes it too big. Therefore
2518                  * only advertise it in that case.
2519                  */
2520                 if (state->split)
2521                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2522                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2523                         goto nla_put_failure;
2524
2525                 if (rdev->wiphy.ht_capa_mod_mask &&
2526                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2527                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2528                             rdev->wiphy.ht_capa_mod_mask))
2529                         goto nla_put_failure;
2530
2531                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2532                     rdev->wiphy.max_acl_mac_addrs &&
2533                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2534                                 rdev->wiphy.max_acl_mac_addrs))
2535                         goto nla_put_failure;
2536
2537                 /*
2538                  * Any information below this point is only available to
2539                  * applications that can deal with it being split. This
2540                  * helps ensure that newly added capabilities don't break
2541                  * older tools by overrunning their buffers.
2542                  *
2543                  * We still increment split_start so that in the split
2544                  * case we'll continue with more data in the next round,
2545                  * but break unconditionally so unsplit data stops here.
2546                  */
2547                 if (state->split)
2548                         state->split_start++;
2549                 else
2550                         state->split_start = 0;
2551                 break;
2552         case 9:
2553                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2554                         goto nla_put_failure;
2555
2556                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2557                                 rdev->wiphy.max_sched_scan_plans) ||
2558                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2559                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2560                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2561                                 rdev->wiphy.max_sched_scan_plan_iterations))
2562                         goto nla_put_failure;
2563
2564                 if (rdev->wiphy.extended_capabilities &&
2565                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2566                              rdev->wiphy.extended_capabilities_len,
2567                              rdev->wiphy.extended_capabilities) ||
2568                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2569                              rdev->wiphy.extended_capabilities_len,
2570                              rdev->wiphy.extended_capabilities_mask)))
2571                         goto nla_put_failure;
2572
2573                 if (rdev->wiphy.vht_capa_mod_mask &&
2574                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2575                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2576                             rdev->wiphy.vht_capa_mod_mask))
2577                         goto nla_put_failure;
2578
2579                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2580                             rdev->wiphy.perm_addr))
2581                         goto nla_put_failure;
2582
2583                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2584                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2585                             rdev->wiphy.addr_mask))
2586                         goto nla_put_failure;
2587
2588                 if (rdev->wiphy.n_addresses > 1) {
2589                         void *attr;
2590
2591                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2592                         if (!attr)
2593                                 goto nla_put_failure;
2594
2595                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2596                                 if (nla_put(msg, i + 1, ETH_ALEN,
2597                                             rdev->wiphy.addresses[i].addr))
2598                                         goto nla_put_failure;
2599
2600                         nla_nest_end(msg, attr);
2601                 }
2602
2603                 state->split_start++;
2604                 break;
2605         case 10:
2606                 if (nl80211_send_coalesce(msg, rdev))
2607                         goto nla_put_failure;
2608
2609                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2610                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2611                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2612                         goto nla_put_failure;
2613
2614                 if (rdev->wiphy.max_ap_assoc_sta &&
2615                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2616                                 rdev->wiphy.max_ap_assoc_sta))
2617                         goto nla_put_failure;
2618
2619                 state->split_start++;
2620                 break;
2621         case 11:
2622                 if (rdev->wiphy.n_vendor_commands) {
2623                         const struct nl80211_vendor_cmd_info *info;
2624                         struct nlattr *nested;
2625
2626                         nested = nla_nest_start_noflag(msg,
2627                                                        NL80211_ATTR_VENDOR_DATA);
2628                         if (!nested)
2629                                 goto nla_put_failure;
2630
2631                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2632                                 info = &rdev->wiphy.vendor_commands[i].info;
2633                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2634                                         goto nla_put_failure;
2635                         }
2636                         nla_nest_end(msg, nested);
2637                 }
2638
2639                 if (rdev->wiphy.n_vendor_events) {
2640                         const struct nl80211_vendor_cmd_info *info;
2641                         struct nlattr *nested;
2642
2643                         nested = nla_nest_start_noflag(msg,
2644                                                        NL80211_ATTR_VENDOR_EVENTS);
2645                         if (!nested)
2646                                 goto nla_put_failure;
2647
2648                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2649                                 info = &rdev->wiphy.vendor_events[i];
2650                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2651                                         goto nla_put_failure;
2652                         }
2653                         nla_nest_end(msg, nested);
2654                 }
2655                 state->split_start++;
2656                 break;
2657         case 12:
2658                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2659                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2660                                rdev->wiphy.max_num_csa_counters))
2661                         goto nla_put_failure;
2662
2663                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2664                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2665                         goto nla_put_failure;
2666
2667                 if (rdev->wiphy.max_sched_scan_reqs &&
2668                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2669                                 rdev->wiphy.max_sched_scan_reqs))
2670                         goto nla_put_failure;
2671
2672                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2673                             sizeof(rdev->wiphy.ext_features),
2674                             rdev->wiphy.ext_features))
2675                         goto nla_put_failure;
2676
2677                 if (rdev->wiphy.bss_select_support) {
2678                         struct nlattr *nested;
2679                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2680
2681                         nested = nla_nest_start_noflag(msg,
2682                                                        NL80211_ATTR_BSS_SELECT);
2683                         if (!nested)
2684                                 goto nla_put_failure;
2685
2686                         i = 0;
2687                         while (bss_select_support) {
2688                                 if ((bss_select_support & 1) &&
2689                                     nla_put_flag(msg, i))
2690                                         goto nla_put_failure;
2691                                 i++;
2692                                 bss_select_support >>= 1;
2693                         }
2694                         nla_nest_end(msg, nested);
2695                 }
2696
2697                 state->split_start++;
2698                 break;
2699         case 13:
2700                 if (rdev->wiphy.num_iftype_ext_capab &&
2701                     rdev->wiphy.iftype_ext_capab) {
2702                         struct nlattr *nested_ext_capab, *nested;
2703
2704                         nested = nla_nest_start_noflag(msg,
2705                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2706                         if (!nested)
2707                                 goto nla_put_failure;
2708
2709                         for (i = state->capa_start;
2710                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2711                                 const struct wiphy_iftype_ext_capab *capab;
2712
2713                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2714
2715                                 nested_ext_capab = nla_nest_start_noflag(msg,
2716                                                                          i);
2717                                 if (!nested_ext_capab ||
2718                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2719                                                 capab->iftype) ||
2720                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2721                                             capab->extended_capabilities_len,
2722                                             capab->extended_capabilities) ||
2723                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2724                                             capab->extended_capabilities_len,
2725                                             capab->extended_capabilities_mask))
2726                                         goto nla_put_failure;
2727
2728                                 nla_nest_end(msg, nested_ext_capab);
2729                                 if (state->split)
2730                                         break;
2731                         }
2732                         nla_nest_end(msg, nested);
2733                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2734                                 state->capa_start = i + 1;
2735                                 break;
2736                         }
2737                 }
2738
2739                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2740                                 rdev->wiphy.nan_supported_bands))
2741                         goto nla_put_failure;
2742
2743                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2744                                             NL80211_EXT_FEATURE_TXQS)) {
2745                         struct cfg80211_txq_stats txqstats = {};
2746                         int res;
2747
2748                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2749                         if (!res &&
2750                             !nl80211_put_txq_stats(msg, &txqstats,
2751                                                    NL80211_ATTR_TXQ_STATS))
2752                                 goto nla_put_failure;
2753
2754                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2755                                         rdev->wiphy.txq_limit))
2756                                 goto nla_put_failure;
2757                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2758                                         rdev->wiphy.txq_memory_limit))
2759                                 goto nla_put_failure;
2760                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2761                                         rdev->wiphy.txq_quantum))
2762                                 goto nla_put_failure;
2763                 }
2764
2765                 state->split_start++;
2766                 break;
2767         case 14:
2768                 if (nl80211_send_pmsr_capa(rdev, msg))
2769                         goto nla_put_failure;
2770
2771                 state->split_start++;
2772                 break;
2773         case 15:
2774                 if (rdev->wiphy.akm_suites &&
2775                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2776                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2777                             rdev->wiphy.akm_suites))
2778                         goto nla_put_failure;
2779
2780                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2781                         goto nla_put_failure;
2782
2783                 if (nl80211_put_tid_config_support(rdev, msg))
2784                         goto nla_put_failure;
2785                 state->split_start++;
2786                 break;
2787         case 16:
2788                 if (nl80211_put_sar_specs(rdev, msg))
2789                         goto nla_put_failure;
2790
2791                 /* done */
2792                 state->split_start = 0;
2793                 break;
2794         }
2795  finish:
2796         genlmsg_end(msg, hdr);
2797         return 0;
2798
2799  nla_put_failure:
2800         genlmsg_cancel(msg, hdr);
2801         return -EMSGSIZE;
2802 }
2803
2804 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2805                                     struct netlink_callback *cb,
2806                                     struct nl80211_dump_wiphy_state *state)
2807 {
2808         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2809         int ret;
2810
2811         if (!tb)
2812                 return -ENOMEM;
2813
2814         ret = nlmsg_parse_deprecated(cb->nlh,
2815                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2816                                      tb, nl80211_fam.maxattr,
2817                                      nl80211_policy, NULL);
2818         /* ignore parse errors for backward compatibility */
2819         if (ret) {
2820                 ret = 0;
2821                 goto out;
2822         }
2823
2824         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2825         if (tb[NL80211_ATTR_WIPHY])
2826                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2827         if (tb[NL80211_ATTR_WDEV])
2828                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2829         if (tb[NL80211_ATTR_IFINDEX]) {
2830                 struct net_device *netdev;
2831                 struct cfg80211_registered_device *rdev;
2832                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2833
2834                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2835                 if (!netdev) {
2836                         ret = -ENODEV;
2837                         goto out;
2838                 }
2839                 if (netdev->ieee80211_ptr) {
2840                         rdev = wiphy_to_rdev(
2841                                 netdev->ieee80211_ptr->wiphy);
2842                         state->filter_wiphy = rdev->wiphy_idx;
2843                 }
2844         }
2845
2846         ret = 0;
2847 out:
2848         kfree(tb);
2849         return ret;
2850 }
2851
2852 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2853 {
2854         int idx = 0, ret;
2855         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2856         struct cfg80211_registered_device *rdev;
2857
2858         rtnl_lock();
2859         if (!state) {
2860                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2861                 if (!state) {
2862                         rtnl_unlock();
2863                         return -ENOMEM;
2864                 }
2865                 state->filter_wiphy = -1;
2866                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2867                 if (ret) {
2868                         kfree(state);
2869                         rtnl_unlock();
2870                         return ret;
2871                 }
2872                 cb->args[0] = (long)state;
2873         }
2874
2875         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2876                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2877                         continue;
2878                 if (++idx <= state->start)
2879                         continue;
2880                 if (state->filter_wiphy != -1 &&
2881                     state->filter_wiphy != rdev->wiphy_idx)
2882                         continue;
2883                 /* attempt to fit multiple wiphy data chunks into the skb */
2884                 do {
2885                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2886                                                  skb,
2887                                                  NETLINK_CB(cb->skb).portid,
2888                                                  cb->nlh->nlmsg_seq,
2889                                                  NLM_F_MULTI, state);
2890                         if (ret < 0) {
2891                                 /*
2892                                  * If sending the wiphy data didn't fit (ENOBUFS
2893                                  * or EMSGSIZE returned), this SKB is still
2894                                  * empty (so it's not too big because another
2895                                  * wiphy dataset is already in the skb) and
2896                                  * we've not tried to adjust the dump allocation
2897                                  * yet ... then adjust the alloc size to be
2898                                  * bigger, and return 1 but with the empty skb.
2899                                  * This results in an empty message being RX'ed
2900                                  * in userspace, but that is ignored.
2901                                  *
2902                                  * We can then retry with the larger buffer.
2903                                  */
2904                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2905                                     !skb->len && !state->split &&
2906                                     cb->min_dump_alloc < 4096) {
2907                                         cb->min_dump_alloc = 4096;
2908                                         state->split_start = 0;
2909                                         rtnl_unlock();
2910                                         return 1;
2911                                 }
2912                                 idx--;
2913                                 break;
2914                         }
2915                 } while (state->split_start > 0);
2916                 break;
2917         }
2918         rtnl_unlock();
2919
2920         state->start = idx;
2921
2922         return skb->len;
2923 }
2924
2925 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2926 {
2927         kfree((void *)cb->args[0]);
2928         return 0;
2929 }
2930
2931 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2932 {
2933         struct sk_buff *msg;
2934         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2935         struct nl80211_dump_wiphy_state state = {};
2936
2937         msg = nlmsg_new(4096, GFP_KERNEL);
2938         if (!msg)
2939                 return -ENOMEM;
2940
2941         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2942                                info->snd_portid, info->snd_seq, 0,
2943                                &state) < 0) {
2944                 nlmsg_free(msg);
2945                 return -ENOBUFS;
2946         }
2947
2948         return genlmsg_reply(msg, info);
2949 }
2950
2951 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2952         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2953         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2954         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2955         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2956         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2957 };
2958
2959 static int parse_txq_params(struct nlattr *tb[],
2960                             struct ieee80211_txq_params *txq_params)
2961 {
2962         u8 ac;
2963
2964         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2965             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2966             !tb[NL80211_TXQ_ATTR_AIFS])
2967                 return -EINVAL;
2968
2969         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2970         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2971         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2972         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2973         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2974
2975         if (ac >= NL80211_NUM_ACS)
2976                 return -EINVAL;
2977         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2978         return 0;
2979 }
2980
2981 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2982 {
2983         /*
2984          * You can only set the channel explicitly for some interfaces,
2985          * most have their channel managed via their respective
2986          * "establish a connection" command (connect, join, ...)
2987          *
2988          * For AP/GO and mesh mode, the channel can be set with the
2989          * channel userspace API, but is only stored and passed to the
2990          * low-level driver when the AP starts or the mesh is joined.
2991          * This is for backward compatibility, userspace can also give
2992          * the channel in the start-ap or join-mesh commands instead.
2993          *
2994          * Monitors are special as they are normally slaved to
2995          * whatever else is going on, so they have their own special
2996          * operation to set the monitor channel if possible.
2997          */
2998         return !wdev ||
2999                 wdev->iftype == NL80211_IFTYPE_AP ||
3000                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
3001                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
3002                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3003 }
3004
3005 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3006                           struct genl_info *info,
3007                           struct cfg80211_chan_def *chandef)
3008 {
3009         struct netlink_ext_ack *extack = info->extack;
3010         struct nlattr **attrs = info->attrs;
3011         u32 control_freq;
3012
3013         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3014                 return -EINVAL;
3015
3016         control_freq = MHZ_TO_KHZ(
3017                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3018         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3019                 control_freq +=
3020                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3021
3022         memset(chandef, 0, sizeof(*chandef));
3023         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3024         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3025         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3026         chandef->freq1_offset = control_freq % 1000;
3027         chandef->center_freq2 = 0;
3028
3029         /* Primary channel not allowed */
3030         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3031                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3032                                     "Channel is disabled");
3033                 return -EINVAL;
3034         }
3035
3036         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3037                 enum nl80211_channel_type chantype;
3038
3039                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3040
3041                 switch (chantype) {
3042                 case NL80211_CHAN_NO_HT:
3043                 case NL80211_CHAN_HT20:
3044                 case NL80211_CHAN_HT40PLUS:
3045                 case NL80211_CHAN_HT40MINUS:
3046                         cfg80211_chandef_create(chandef, chandef->chan,
3047                                                 chantype);
3048                         /* user input for center_freq is incorrect */
3049                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3050                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3051                                 NL_SET_ERR_MSG_ATTR(extack,
3052                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3053                                                     "bad center frequency 1");
3054                                 return -EINVAL;
3055                         }
3056                         /* center_freq2 must be zero */
3057                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3058                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3059                                 NL_SET_ERR_MSG_ATTR(extack,
3060                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3061                                                     "center frequency 2 can't be used");
3062                                 return -EINVAL;
3063                         }
3064                         break;
3065                 default:
3066                         NL_SET_ERR_MSG_ATTR(extack,
3067                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3068                                             "invalid channel type");
3069                         return -EINVAL;
3070                 }
3071         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3072                 chandef->width =
3073                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3074                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3075                         chandef->center_freq1 =
3076                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3077                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3078                                 chandef->freq1_offset = nla_get_u32(
3079                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3080                         else
3081                                 chandef->freq1_offset = 0;
3082                 }
3083                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3084                         chandef->center_freq2 =
3085                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3086         }
3087
3088         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3089                 chandef->edmg.channels =
3090                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3091
3092                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3093                         chandef->edmg.bw_config =
3094                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3095         } else {
3096                 chandef->edmg.bw_config = 0;
3097                 chandef->edmg.channels = 0;
3098         }
3099
3100         if (!cfg80211_chandef_valid(chandef)) {
3101                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3102                 return -EINVAL;
3103         }
3104
3105         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3106                                      IEEE80211_CHAN_DISABLED)) {
3107                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3108                 return -EINVAL;
3109         }
3110
3111         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3112              chandef->width == NL80211_CHAN_WIDTH_10) &&
3113             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3114                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3115                 return -EINVAL;
3116         }
3117
3118         return 0;
3119 }
3120
3121 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3122                                  struct net_device *dev,
3123                                  struct genl_info *info)
3124 {
3125         struct cfg80211_chan_def chandef;
3126         int result;
3127         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3128         struct wireless_dev *wdev = NULL;
3129
3130         if (dev)
3131                 wdev = dev->ieee80211_ptr;
3132         if (!nl80211_can_set_dev_channel(wdev))
3133                 return -EOPNOTSUPP;
3134         if (wdev)
3135                 iftype = wdev->iftype;
3136
3137         result = nl80211_parse_chandef(rdev, info, &chandef);
3138         if (result)
3139                 return result;
3140
3141         switch (iftype) {
3142         case NL80211_IFTYPE_AP:
3143         case NL80211_IFTYPE_P2P_GO:
3144                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3145                                                    iftype)) {
3146                         result = -EINVAL;
3147                         break;
3148                 }
3149                 if (wdev->beacon_interval) {
3150                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3151                             !(rdev->wiphy.features &
3152                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3153                                 result = -EBUSY;
3154                                 break;
3155                         }
3156
3157                         /* Only allow dynamic channel width changes */
3158                         if (chandef.chan != wdev->preset_chandef.chan) {
3159                                 result = -EBUSY;
3160                                 break;
3161                         }
3162                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3163                         if (result)
3164                                 break;
3165                 }
3166                 wdev->preset_chandef = chandef;
3167                 result = 0;
3168                 break;
3169         case NL80211_IFTYPE_MESH_POINT:
3170                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3171                 break;
3172         case NL80211_IFTYPE_MONITOR:
3173                 result = cfg80211_set_monitor_channel(rdev, &chandef);
3174                 break;
3175         default:
3176                 result = -EINVAL;
3177         }
3178
3179         return result;
3180 }
3181
3182 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3183 {
3184         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3185         struct net_device *netdev = info->user_ptr[1];
3186
3187         return __nl80211_set_channel(rdev, netdev, info);
3188 }
3189
3190 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3191 {
3192         struct cfg80211_registered_device *rdev = NULL;
3193         struct net_device *netdev = NULL;
3194         struct wireless_dev *wdev;
3195         int result = 0, rem_txq_params = 0;
3196         struct nlattr *nl_txq_params;
3197         u32 changed;
3198         u8 retry_short = 0, retry_long = 0;
3199         u32 frag_threshold = 0, rts_threshold = 0;
3200         u8 coverage_class = 0;
3201         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3202
3203         rtnl_lock();
3204         /*
3205          * Try to find the wiphy and netdev. Normally this
3206          * function shouldn't need the netdev, but this is
3207          * done for backward compatibility -- previously
3208          * setting the channel was done per wiphy, but now
3209          * it is per netdev. Previous userland like hostapd
3210          * also passed a netdev to set_wiphy, so that it is
3211          * possible to let that go to the right netdev!
3212          */
3213
3214         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3215                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3216
3217                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3218                 if (netdev && netdev->ieee80211_ptr)
3219                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3220                 else
3221                         netdev = NULL;
3222         }
3223
3224         if (!netdev) {
3225                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3226                                                   info->attrs);
3227                 if (IS_ERR(rdev)) {
3228                         rtnl_unlock();
3229                         return PTR_ERR(rdev);
3230                 }
3231                 wdev = NULL;
3232                 netdev = NULL;
3233                 result = 0;
3234         } else
3235                 wdev = netdev->ieee80211_ptr;
3236
3237         wiphy_lock(&rdev->wiphy);
3238
3239         /*
3240          * end workaround code, by now the rdev is available
3241          * and locked, and wdev may or may not be NULL.
3242          */
3243
3244         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3245                 result = cfg80211_dev_rename(
3246                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3247         rtnl_unlock();
3248
3249         if (result)
3250                 goto out;
3251
3252         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3253                 struct ieee80211_txq_params txq_params;
3254                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3255
3256                 if (!rdev->ops->set_txq_params) {
3257                         result = -EOPNOTSUPP;
3258                         goto out;
3259                 }
3260
3261                 if (!netdev) {
3262                         result = -EINVAL;
3263                         goto out;
3264                 }
3265
3266                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3267                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3268                         result = -EINVAL;
3269                         goto out;
3270                 }
3271
3272                 if (!netif_running(netdev)) {
3273                         result = -ENETDOWN;
3274                         goto out;
3275                 }
3276
3277                 nla_for_each_nested(nl_txq_params,
3278                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3279                                     rem_txq_params) {
3280                         result = nla_parse_nested_deprecated(tb,
3281                                                              NL80211_TXQ_ATTR_MAX,
3282                                                              nl_txq_params,
3283                                                              txq_params_policy,
3284                                                              info->extack);
3285                         if (result)
3286                                 goto out;
3287                         result = parse_txq_params(tb, &txq_params);
3288                         if (result)
3289                                 goto out;
3290
3291                         result = rdev_set_txq_params(rdev, netdev,
3292                                                      &txq_params);
3293                         if (result)
3294                                 goto out;
3295                 }
3296         }
3297
3298         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3299                 result = __nl80211_set_channel(
3300                         rdev,
3301                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3302                         info);
3303                 if (result)
3304                         goto out;
3305         }
3306
3307         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3308                 struct wireless_dev *txp_wdev = wdev;
3309                 enum nl80211_tx_power_setting type;
3310                 int idx, mbm = 0;
3311
3312                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3313                         txp_wdev = NULL;
3314
3315                 if (!rdev->ops->set_tx_power) {
3316                         result = -EOPNOTSUPP;
3317                         goto out;
3318                 }
3319
3320                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3321                 type = nla_get_u32(info->attrs[idx]);
3322
3323                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3324                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3325                         result = -EINVAL;
3326                         goto out;
3327                 }
3328
3329                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3330                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3331                         mbm = nla_get_u32(info->attrs[idx]);
3332                 }
3333
3334                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3335                 if (result)
3336                         goto out;
3337         }
3338
3339         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3340             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3341                 u32 tx_ant, rx_ant;
3342
3343                 if ((!rdev->wiphy.available_antennas_tx &&
3344                      !rdev->wiphy.available_antennas_rx) ||
3345                     !rdev->ops->set_antenna) {
3346                         result = -EOPNOTSUPP;
3347                         goto out;
3348                 }
3349
3350                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3351                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3352
3353                 /* reject antenna configurations which don't match the
3354                  * available antenna masks, except for the "all" mask */
3355                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3356                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3357                         result = -EINVAL;
3358                         goto out;
3359                 }
3360
3361                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3362                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3363
3364                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3365                 if (result)
3366                         goto out;
3367         }
3368
3369         changed = 0;
3370
3371         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3372                 retry_short = nla_get_u8(
3373                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3374
3375                 changed |= WIPHY_PARAM_RETRY_SHORT;
3376         }
3377
3378         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3379                 retry_long = nla_get_u8(
3380                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3381
3382                 changed |= WIPHY_PARAM_RETRY_LONG;
3383         }
3384
3385         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3386                 frag_threshold = nla_get_u32(
3387                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3388                 if (frag_threshold < 256) {
3389                         result = -EINVAL;
3390                         goto out;
3391                 }
3392
3393                 if (frag_threshold != (u32) -1) {
3394                         /*
3395                          * Fragments (apart from the last one) are required to
3396                          * have even length. Make the fragmentation code
3397                          * simpler by stripping LSB should someone try to use
3398                          * odd threshold value.
3399                          */
3400                         frag_threshold &= ~0x1;
3401                 }
3402                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3403         }
3404
3405         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3406                 rts_threshold = nla_get_u32(
3407                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3408                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3409         }
3410
3411         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3412                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3413                         result = -EINVAL;
3414                         goto out;
3415                 }
3416
3417                 coverage_class = nla_get_u8(
3418                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3419                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3420         }
3421
3422         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3423                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3424                         result = -EOPNOTSUPP;
3425                         goto out;
3426                 }
3427
3428                 changed |= WIPHY_PARAM_DYN_ACK;
3429         }
3430
3431         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3432                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3433                                              NL80211_EXT_FEATURE_TXQS)) {
3434                         result = -EOPNOTSUPP;
3435                         goto out;
3436                 }
3437                 txq_limit = nla_get_u32(
3438                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3439                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3440         }
3441
3442         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3443                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3444                                              NL80211_EXT_FEATURE_TXQS)) {
3445                         result = -EOPNOTSUPP;
3446                         goto out;
3447                 }
3448                 txq_memory_limit = nla_get_u32(
3449                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3450                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3451         }
3452
3453         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3454                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3455                                              NL80211_EXT_FEATURE_TXQS)) {
3456                         result = -EOPNOTSUPP;
3457                         goto out;
3458                 }
3459                 txq_quantum = nla_get_u32(
3460                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3461                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3462         }
3463
3464         if (changed) {
3465                 u8 old_retry_short, old_retry_long;
3466                 u32 old_frag_threshold, old_rts_threshold;
3467                 u8 old_coverage_class;
3468                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3469
3470                 if (!rdev->ops->set_wiphy_params) {
3471                         result = -EOPNOTSUPP;
3472                         goto out;
3473                 }
3474
3475                 old_retry_short = rdev->wiphy.retry_short;
3476                 old_retry_long = rdev->wiphy.retry_long;
3477                 old_frag_threshold = rdev->wiphy.frag_threshold;
3478                 old_rts_threshold = rdev->wiphy.rts_threshold;
3479                 old_coverage_class = rdev->wiphy.coverage_class;
3480                 old_txq_limit = rdev->wiphy.txq_limit;
3481                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3482                 old_txq_quantum = rdev->wiphy.txq_quantum;
3483
3484                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3485                         rdev->wiphy.retry_short = retry_short;
3486                 if (changed & WIPHY_PARAM_RETRY_LONG)
3487                         rdev->wiphy.retry_long = retry_long;
3488                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3489                         rdev->wiphy.frag_threshold = frag_threshold;
3490                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3491                         rdev->wiphy.rts_threshold = rts_threshold;
3492                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3493                         rdev->wiphy.coverage_class = coverage_class;
3494                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3495                         rdev->wiphy.txq_limit = txq_limit;
3496                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3497                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3498                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3499                         rdev->wiphy.txq_quantum = txq_quantum;
3500
3501                 result = rdev_set_wiphy_params(rdev, changed);
3502                 if (result) {
3503                         rdev->wiphy.retry_short = old_retry_short;
3504                         rdev->wiphy.retry_long = old_retry_long;
3505                         rdev->wiphy.frag_threshold = old_frag_threshold;
3506                         rdev->wiphy.rts_threshold = old_rts_threshold;
3507                         rdev->wiphy.coverage_class = old_coverage_class;
3508                         rdev->wiphy.txq_limit = old_txq_limit;
3509                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3510                         rdev->wiphy.txq_quantum = old_txq_quantum;
3511                         goto out;
3512                 }
3513         }
3514
3515         result = 0;
3516
3517 out:
3518         wiphy_unlock(&rdev->wiphy);
3519         return result;
3520 }
3521
3522 static int nl80211_send_chandef(struct sk_buff *msg,
3523                                 const struct cfg80211_chan_def *chandef)
3524 {
3525         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3526                 return -EINVAL;
3527
3528         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3529                         chandef->chan->center_freq))
3530                 return -ENOBUFS;
3531         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3532                         chandef->chan->freq_offset))
3533                 return -ENOBUFS;
3534         switch (chandef->width) {
3535         case NL80211_CHAN_WIDTH_20_NOHT:
3536         case NL80211_CHAN_WIDTH_20:
3537         case NL80211_CHAN_WIDTH_40:
3538                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3539                                 cfg80211_get_chandef_type(chandef)))
3540                         return -ENOBUFS;
3541                 break;
3542         default:
3543                 break;
3544         }
3545         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3546                 return -ENOBUFS;
3547         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3548                 return -ENOBUFS;
3549         if (chandef->center_freq2 &&
3550             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3551                 return -ENOBUFS;
3552         return 0;
3553 }
3554
3555 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3556                               struct cfg80211_registered_device *rdev,
3557                               struct wireless_dev *wdev,
3558                               enum nl80211_commands cmd)
3559 {
3560         struct net_device *dev = wdev->netdev;
3561         void *hdr;
3562
3563         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3564                 cmd != NL80211_CMD_DEL_INTERFACE &&
3565                 cmd != NL80211_CMD_SET_INTERFACE);
3566
3567         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3568         if (!hdr)
3569                 return -1;
3570
3571         if (dev &&
3572             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3573              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3574                 goto nla_put_failure;
3575
3576         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3577             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3578             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3579                               NL80211_ATTR_PAD) ||
3580             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3581             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3582                         rdev->devlist_generation ^
3583                         (cfg80211_rdev_list_generation << 2)) ||
3584             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3585                 goto nla_put_failure;
3586
3587         if (rdev->ops->get_channel) {
3588                 int ret;
3589                 struct cfg80211_chan_def chandef = {};
3590
3591                 ret = rdev_get_channel(rdev, wdev, &chandef);
3592                 if (ret == 0) {
3593                         if (nl80211_send_chandef(msg, &chandef))
3594                                 goto nla_put_failure;
3595                 }
3596         }
3597
3598         if (rdev->ops->get_tx_power) {
3599                 int dbm, ret;
3600
3601                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3602                 if (ret == 0 &&
3603                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3604                                 DBM_TO_MBM(dbm)))
3605                         goto nla_put_failure;
3606         }
3607
3608         wdev_lock(wdev);
3609         switch (wdev->iftype) {
3610         case NL80211_IFTYPE_AP:
3611                 if (wdev->ssid_len &&
3612                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3613                         goto nla_put_failure_locked;
3614                 break;
3615         case NL80211_IFTYPE_STATION:
3616         case NL80211_IFTYPE_P2P_CLIENT:
3617         case NL80211_IFTYPE_ADHOC: {
3618                 const u8 *ssid_ie;
3619                 if (!wdev->current_bss)
3620                         break;
3621                 rcu_read_lock();
3622                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3623                                                WLAN_EID_SSID);
3624                 if (ssid_ie &&
3625                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3626                         goto nla_put_failure_rcu_locked;
3627                 rcu_read_unlock();
3628                 break;
3629                 }
3630         default:
3631                 /* nothing */
3632                 break;
3633         }
3634         wdev_unlock(wdev);
3635
3636         if (rdev->ops->get_txq_stats) {
3637                 struct cfg80211_txq_stats txqstats = {};
3638                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3639
3640                 if (ret == 0 &&
3641                     !nl80211_put_txq_stats(msg, &txqstats,
3642                                            NL80211_ATTR_TXQ_STATS))
3643                         goto nla_put_failure;
3644         }
3645
3646         genlmsg_end(msg, hdr);
3647         return 0;
3648
3649  nla_put_failure_rcu_locked:
3650         rcu_read_unlock();
3651  nla_put_failure_locked:
3652         wdev_unlock(wdev);
3653  nla_put_failure:
3654         genlmsg_cancel(msg, hdr);
3655         return -EMSGSIZE;
3656 }
3657
3658 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3659 {
3660         int wp_idx = 0;
3661         int if_idx = 0;
3662         int wp_start = cb->args[0];
3663         int if_start = cb->args[1];
3664         int filter_wiphy = -1;
3665         struct cfg80211_registered_device *rdev;
3666         struct wireless_dev *wdev;
3667         int ret;
3668
3669         rtnl_lock();
3670         if (!cb->args[2]) {
3671                 struct nl80211_dump_wiphy_state state = {
3672                         .filter_wiphy = -1,
3673                 };
3674
3675                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3676                 if (ret)
3677                         goto out_unlock;
3678
3679                 filter_wiphy = state.filter_wiphy;
3680
3681                 /*
3682                  * if filtering, set cb->args[2] to +1 since 0 is the default
3683                  * value needed to determine that parsing is necessary.
3684                  */
3685                 if (filter_wiphy >= 0)
3686                         cb->args[2] = filter_wiphy + 1;
3687                 else
3688                         cb->args[2] = -1;
3689         } else if (cb->args[2] > 0) {
3690                 filter_wiphy = cb->args[2] - 1;
3691         }
3692
3693         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3694                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3695                         continue;
3696                 if (wp_idx < wp_start) {
3697                         wp_idx++;
3698                         continue;
3699                 }
3700
3701                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3702                         continue;
3703
3704                 if_idx = 0;
3705
3706                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3707                         if (if_idx < if_start) {
3708                                 if_idx++;
3709                                 continue;
3710                         }
3711                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3712                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3713                                                rdev, wdev,
3714                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3715                                 goto out;
3716                         }
3717                         if_idx++;
3718                 }
3719
3720                 wp_idx++;
3721         }
3722  out:
3723         cb->args[0] = wp_idx;
3724         cb->args[1] = if_idx;
3725
3726         ret = skb->len;
3727  out_unlock:
3728         rtnl_unlock();
3729
3730         return ret;
3731 }
3732
3733 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3734 {
3735         struct sk_buff *msg;
3736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3737         struct wireless_dev *wdev = info->user_ptr[1];
3738
3739         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3740         if (!msg)
3741                 return -ENOMEM;
3742
3743         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3744                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3745                 nlmsg_free(msg);
3746                 return -ENOBUFS;
3747         }
3748
3749         return genlmsg_reply(msg, info);
3750 }
3751
3752 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3753         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3754         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3755         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3756         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3757         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3758         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3759 };
3760
3761 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3762 {
3763         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3764         int flag;
3765
3766         *mntrflags = 0;
3767
3768         if (!nla)
3769                 return -EINVAL;
3770
3771         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3772                 return -EINVAL;
3773
3774         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3775                 if (flags[flag])
3776                         *mntrflags |= (1<<flag);
3777
3778         *mntrflags |= MONITOR_FLAG_CHANGED;
3779
3780         return 0;
3781 }
3782
3783 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3784                                      enum nl80211_iftype type,
3785                                      struct genl_info *info,
3786                                      struct vif_params *params)
3787 {
3788         bool change = false;
3789         int err;
3790
3791         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3792                 if (type != NL80211_IFTYPE_MONITOR)
3793                         return -EINVAL;
3794
3795                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3796                                           &params->flags);
3797                 if (err)
3798                         return err;
3799
3800                 change = true;
3801         }
3802
3803         if (params->flags & MONITOR_FLAG_ACTIVE &&
3804             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3805                 return -EOPNOTSUPP;
3806
3807         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3808                 const u8 *mumimo_groups;
3809                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3810
3811                 if (type != NL80211_IFTYPE_MONITOR)
3812                         return -EINVAL;
3813
3814                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3815                         return -EOPNOTSUPP;
3816
3817                 mumimo_groups =
3818                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3819
3820                 /* bits 0 and 63 are reserved and must be zero */
3821                 if ((mumimo_groups[0] & BIT(0)) ||
3822                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3823                         return -EINVAL;
3824
3825                 params->vht_mumimo_groups = mumimo_groups;
3826                 change = true;
3827         }
3828
3829         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3830                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3831
3832                 if (type != NL80211_IFTYPE_MONITOR)
3833                         return -EINVAL;
3834
3835                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3836                         return -EOPNOTSUPP;
3837
3838                 params->vht_mumimo_follow_addr =
3839                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3840                 change = true;
3841         }
3842
3843         return change ? 1 : 0;
3844 }
3845
3846 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3847                                struct net_device *netdev, u8 use_4addr,
3848                                enum nl80211_iftype iftype)
3849 {
3850         if (!use_4addr) {
3851                 if (netdev && netif_is_bridge_port(netdev))
3852                         return -EBUSY;
3853                 return 0;
3854         }
3855
3856         switch (iftype) {
3857         case NL80211_IFTYPE_AP_VLAN:
3858                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3859                         return 0;
3860                 break;
3861         case NL80211_IFTYPE_STATION:
3862                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3863                         return 0;
3864                 break;
3865         default:
3866                 break;
3867         }
3868
3869         return -EOPNOTSUPP;
3870 }
3871
3872 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3873 {
3874         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3875         struct vif_params params;
3876         int err;
3877         enum nl80211_iftype otype, ntype;
3878         struct net_device *dev = info->user_ptr[1];
3879         bool change = false;
3880
3881         memset(&params, 0, sizeof(params));
3882
3883         otype = ntype = dev->ieee80211_ptr->iftype;
3884
3885         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3886                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3887                 if (otype != ntype)
3888                         change = true;
3889         }
3890
3891         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3892                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3893
3894                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3895                         return -EINVAL;
3896                 if (netif_running(dev))
3897                         return -EBUSY;
3898
3899                 wdev_lock(wdev);
3900                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3901                              IEEE80211_MAX_MESH_ID_LEN);
3902                 wdev->mesh_id_up_len =
3903                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3904                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3905                        wdev->mesh_id_up_len);
3906                 wdev_unlock(wdev);
3907         }
3908
3909         if (info->attrs[NL80211_ATTR_4ADDR]) {
3910                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3911                 change = true;
3912                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3913                 if (err)
3914                         return err;
3915         } else {
3916                 params.use_4addr = -1;
3917         }
3918
3919         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3920         if (err < 0)
3921                 return err;
3922         if (err > 0)
3923                 change = true;
3924
3925         if (change)
3926                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3927         else
3928                 err = 0;
3929
3930         if (!err && params.use_4addr != -1)
3931                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3932
3933         if (change && !err) {
3934                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3935
3936                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3937         }
3938
3939         return err;
3940 }
3941
3942 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3943 {
3944         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3945         struct vif_params params;
3946         struct wireless_dev *wdev;
3947         struct sk_buff *msg;
3948         int err;
3949         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3950
3951         memset(&params, 0, sizeof(params));
3952
3953         if (!info->attrs[NL80211_ATTR_IFNAME])
3954                 return -EINVAL;
3955
3956         if (info->attrs[NL80211_ATTR_IFTYPE])
3957                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3958
3959         if (!rdev->ops->add_virtual_intf)
3960                 return -EOPNOTSUPP;
3961
3962         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3963              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3964             info->attrs[NL80211_ATTR_MAC]) {
3965                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3966                            ETH_ALEN);
3967                 if (!is_valid_ether_addr(params.macaddr))
3968                         return -EADDRNOTAVAIL;
3969         }
3970
3971         if (info->attrs[NL80211_ATTR_4ADDR]) {
3972                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3973                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3974                 if (err)
3975                         return err;
3976         }
3977
3978         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3979                 return -EOPNOTSUPP;
3980
3981         err = nl80211_parse_mon_options(rdev, type, info, &params);
3982         if (err < 0)
3983                 return err;
3984
3985         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3986         if (!msg)
3987                 return -ENOMEM;
3988
3989         wdev = rdev_add_virtual_intf(rdev,
3990                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3991                                 NET_NAME_USER, type, &params);
3992         if (WARN_ON(!wdev)) {
3993                 nlmsg_free(msg);
3994                 return -EPROTO;
3995         } else if (IS_ERR(wdev)) {
3996                 nlmsg_free(msg);
3997                 return PTR_ERR(wdev);
3998         }
3999
4000         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4001                 wdev->owner_nlportid = info->snd_portid;
4002
4003         switch (type) {
4004         case NL80211_IFTYPE_MESH_POINT:
4005                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4006                         break;
4007                 wdev_lock(wdev);
4008                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4009                              IEEE80211_MAX_MESH_ID_LEN);
4010                 wdev->mesh_id_up_len =
4011                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4012                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4013                        wdev->mesh_id_up_len);
4014                 wdev_unlock(wdev);
4015                 break;
4016         case NL80211_IFTYPE_NAN:
4017         case NL80211_IFTYPE_P2P_DEVICE:
4018                 /*
4019                  * P2P Device and NAN do not have a netdev, so don't go
4020                  * through the netdev notifier and must be added here
4021                  */
4022                 cfg80211_init_wdev(wdev);
4023                 cfg80211_register_wdev(rdev, wdev);
4024                 break;
4025         default:
4026                 break;
4027         }
4028
4029         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4030                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4031                 nlmsg_free(msg);
4032                 return -ENOBUFS;
4033         }
4034
4035         return genlmsg_reply(msg, info);
4036 }
4037
4038 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4039 {
4040         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4041         int ret;
4042
4043         /* to avoid failing a new interface creation due to pending removal */
4044         cfg80211_destroy_ifaces(rdev);
4045
4046         wiphy_lock(&rdev->wiphy);
4047         ret = _nl80211_new_interface(skb, info);
4048         wiphy_unlock(&rdev->wiphy);
4049
4050         return ret;
4051 }
4052
4053 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4054 {
4055         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4056         struct wireless_dev *wdev = info->user_ptr[1];
4057
4058         if (!rdev->ops->del_virtual_intf)
4059                 return -EOPNOTSUPP;
4060
4061         /*
4062          * We hold RTNL, so this is safe, without RTNL opencount cannot
4063          * reach 0, and thus the rdev cannot be deleted.
4064          *
4065          * We need to do it for the dev_close(), since that will call
4066          * the netdev notifiers, and we need to acquire the mutex there
4067          * but don't know if we get there from here or from some other
4068          * place (e.g. "ip link set ... down").
4069          */
4070         mutex_unlock(&rdev->wiphy.mtx);
4071
4072         /*
4073          * If we remove a wireless device without a netdev then clear
4074          * user_ptr[1] so that nl80211_post_doit won't dereference it
4075          * to check if it needs to do dev_put(). Otherwise it crashes
4076          * since the wdev has been freed, unlike with a netdev where
4077          * we need the dev_put() for the netdev to really be freed.
4078          */
4079         if (!wdev->netdev)
4080                 info->user_ptr[1] = NULL;
4081         else
4082                 dev_close(wdev->netdev);
4083
4084         mutex_lock(&rdev->wiphy.mtx);
4085
4086         return rdev_del_virtual_intf(rdev, wdev);
4087 }
4088
4089 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4090 {
4091         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4092         struct net_device *dev = info->user_ptr[1];
4093         u16 noack_map;
4094
4095         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4096                 return -EINVAL;
4097
4098         if (!rdev->ops->set_noack_map)
4099                 return -EOPNOTSUPP;
4100
4101         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4102
4103         return rdev_set_noack_map(rdev, dev, noack_map);
4104 }
4105
4106 struct get_key_cookie {
4107         struct sk_buff *msg;
4108         int error;
4109         int idx;
4110 };
4111
4112 static void get_key_callback(void *c, struct key_params *params)
4113 {
4114         struct nlattr *key;
4115         struct get_key_cookie *cookie = c;
4116
4117         if ((params->key &&
4118              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4119                      params->key_len, params->key)) ||
4120             (params->seq &&
4121              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4122                      params->seq_len, params->seq)) ||
4123             (params->cipher &&
4124              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4125                          params->cipher)))
4126                 goto nla_put_failure;
4127
4128         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4129         if (!key)
4130                 goto nla_put_failure;
4131
4132         if ((params->key &&
4133              nla_put(cookie->msg, NL80211_KEY_DATA,
4134                      params->key_len, params->key)) ||
4135             (params->seq &&
4136              nla_put(cookie->msg, NL80211_KEY_SEQ,
4137                      params->seq_len, params->seq)) ||
4138             (params->cipher &&
4139              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4140                          params->cipher)))
4141                 goto nla_put_failure;
4142
4143         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4144                 goto nla_put_failure;
4145
4146         nla_nest_end(cookie->msg, key);
4147
4148         return;
4149  nla_put_failure:
4150         cookie->error = 1;
4151 }
4152
4153 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4154 {
4155         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4156         int err;
4157         struct net_device *dev = info->user_ptr[1];
4158         u8 key_idx = 0;
4159         const u8 *mac_addr = NULL;
4160         bool pairwise;
4161         struct get_key_cookie cookie = {
4162                 .error = 0,
4163         };
4164         void *hdr;
4165         struct sk_buff *msg;
4166         bool bigtk_support = false;
4167
4168         if (wiphy_ext_feature_isset(&rdev->wiphy,
4169                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4170                 bigtk_support = true;
4171
4172         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4173              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4174             wiphy_ext_feature_isset(&rdev->wiphy,
4175                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4176                 bigtk_support = true;
4177
4178         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4179                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4180
4181                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4182                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4183                         return -EINVAL;
4184                 }
4185         }
4186
4187         if (info->attrs[NL80211_ATTR_MAC])
4188                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4189
4190         pairwise = !!mac_addr;
4191         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4192                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4193
4194                 if (kt != NL80211_KEYTYPE_GROUP &&
4195                     kt != NL80211_KEYTYPE_PAIRWISE)
4196                         return -EINVAL;
4197                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4198         }
4199
4200         if (!rdev->ops->get_key)
4201                 return -EOPNOTSUPP;
4202
4203         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4204                 return -ENOENT;
4205
4206         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4207         if (!msg)
4208                 return -ENOMEM;
4209
4210         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4211                              NL80211_CMD_NEW_KEY);
4212         if (!hdr)
4213                 goto nla_put_failure;
4214
4215         cookie.msg = msg;
4216         cookie.idx = key_idx;
4217
4218         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4219             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4220                 goto nla_put_failure;
4221         if (mac_addr &&
4222             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4223                 goto nla_put_failure;
4224
4225         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4226                            get_key_callback);
4227
4228         if (err)
4229                 goto free_msg;
4230
4231         if (cookie.error)
4232                 goto nla_put_failure;
4233
4234         genlmsg_end(msg, hdr);
4235         return genlmsg_reply(msg, info);
4236
4237  nla_put_failure:
4238         err = -ENOBUFS;
4239  free_msg:
4240         nlmsg_free(msg);
4241         return err;
4242 }
4243
4244 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4245 {
4246         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4247         struct key_parse key;
4248         int err;
4249         struct net_device *dev = info->user_ptr[1];
4250
4251         err = nl80211_parse_key(info, &key);
4252         if (err)
4253                 return err;
4254
4255         if (key.idx < 0)
4256                 return -EINVAL;
4257
4258         /* Only support setting default key and
4259          * Extended Key ID action NL80211_KEY_SET_TX.
4260          */
4261         if (!key.def && !key.defmgmt && !key.defbeacon &&
4262             !(key.p.mode == NL80211_KEY_SET_TX))
4263                 return -EINVAL;
4264
4265         wdev_lock(dev->ieee80211_ptr);
4266
4267         if (key.def) {
4268                 if (!rdev->ops->set_default_key) {
4269                         err = -EOPNOTSUPP;
4270                         goto out;
4271                 }
4272
4273                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4274                 if (err)
4275                         goto out;
4276
4277                 err = rdev_set_default_key(rdev, dev, key.idx,
4278                                                  key.def_uni, key.def_multi);
4279
4280                 if (err)
4281                         goto out;
4282
4283 #ifdef CONFIG_CFG80211_WEXT
4284                 dev->ieee80211_ptr->wext.default_key = key.idx;
4285 #endif
4286         } else if (key.defmgmt) {
4287                 if (key.def_uni || !key.def_multi) {
4288                         err = -EINVAL;
4289                         goto out;
4290                 }
4291
4292                 if (!rdev->ops->set_default_mgmt_key) {
4293                         err = -EOPNOTSUPP;
4294                         goto out;
4295                 }
4296
4297                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4298                 if (err)
4299                         goto out;
4300
4301                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4302                 if (err)
4303                         goto out;
4304
4305 #ifdef CONFIG_CFG80211_WEXT
4306                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4307 #endif
4308         } else if (key.defbeacon) {
4309                 if (key.def_uni || !key.def_multi) {
4310                         err = -EINVAL;
4311                         goto out;
4312                 }
4313
4314                 if (!rdev->ops->set_default_beacon_key) {
4315                         err = -EOPNOTSUPP;
4316                         goto out;
4317                 }
4318
4319                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4320                 if (err)
4321                         goto out;
4322
4323                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4324                 if (err)
4325                         goto out;
4326         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4327                    wiphy_ext_feature_isset(&rdev->wiphy,
4328                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4329                 u8 *mac_addr = NULL;
4330
4331                 if (info->attrs[NL80211_ATTR_MAC])
4332                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4333
4334                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4335                         err = -EINVAL;
4336                         goto out;
4337                 }
4338
4339                 err = rdev_add_key(rdev, dev, key.idx,
4340                                    NL80211_KEYTYPE_PAIRWISE,
4341                                    mac_addr, &key.p);
4342         } else {
4343                 err = -EINVAL;
4344         }
4345  out:
4346         wdev_unlock(dev->ieee80211_ptr);
4347
4348         return err;
4349 }
4350
4351 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4352 {
4353         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4354         int err;
4355         struct net_device *dev = info->user_ptr[1];
4356         struct key_parse key;
4357         const u8 *mac_addr = NULL;
4358
4359         err = nl80211_parse_key(info, &key);
4360         if (err)
4361                 return err;
4362
4363         if (!key.p.key) {
4364                 GENL_SET_ERR_MSG(info, "no key");
4365                 return -EINVAL;
4366         }
4367
4368         if (info->attrs[NL80211_ATTR_MAC])
4369                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4370
4371         if (key.type == -1) {
4372                 if (mac_addr)
4373                         key.type = NL80211_KEYTYPE_PAIRWISE;
4374                 else
4375                         key.type = NL80211_KEYTYPE_GROUP;
4376         }
4377
4378         /* for now */
4379         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4380             key.type != NL80211_KEYTYPE_GROUP) {
4381                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4382                 return -EINVAL;
4383         }
4384
4385         if (key.type == NL80211_KEYTYPE_GROUP &&
4386             info->attrs[NL80211_ATTR_VLAN_ID])
4387                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4388
4389         if (!rdev->ops->add_key)
4390                 return -EOPNOTSUPP;
4391
4392         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4393                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4394                                            mac_addr)) {
4395                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4396                 return -EINVAL;
4397         }
4398
4399         wdev_lock(dev->ieee80211_ptr);
4400         err = nl80211_key_allowed(dev->ieee80211_ptr);
4401         if (err)
4402                 GENL_SET_ERR_MSG(info, "key not allowed");
4403         if (!err) {
4404                 err = rdev_add_key(rdev, dev, key.idx,
4405                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4406                                     mac_addr, &key.p);
4407                 if (err)
4408                         GENL_SET_ERR_MSG(info, "key addition failed");
4409         }
4410         wdev_unlock(dev->ieee80211_ptr);
4411
4412         return err;
4413 }
4414
4415 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4416 {
4417         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4418         int err;
4419         struct net_device *dev = info->user_ptr[1];
4420         u8 *mac_addr = NULL;
4421         struct key_parse key;
4422
4423         err = nl80211_parse_key(info, &key);
4424         if (err)
4425                 return err;
4426
4427         if (info->attrs[NL80211_ATTR_MAC])
4428                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4429
4430         if (key.type == -1) {
4431                 if (mac_addr)
4432                         key.type = NL80211_KEYTYPE_PAIRWISE;
4433                 else
4434                         key.type = NL80211_KEYTYPE_GROUP;
4435         }
4436
4437         /* for now */
4438         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4439             key.type != NL80211_KEYTYPE_GROUP)
4440                 return -EINVAL;
4441
4442         if (!cfg80211_valid_key_idx(rdev, key.idx,
4443                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4444                 return -EINVAL;
4445
4446         if (!rdev->ops->del_key)
4447                 return -EOPNOTSUPP;
4448
4449         wdev_lock(dev->ieee80211_ptr);
4450         err = nl80211_key_allowed(dev->ieee80211_ptr);
4451
4452         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4453             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4454                 err = -ENOENT;
4455
4456         if (!err)
4457                 err = rdev_del_key(rdev, dev, key.idx,
4458                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4459                                    mac_addr);
4460
4461 #ifdef CONFIG_CFG80211_WEXT
4462         if (!err) {
4463                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4464                         dev->ieee80211_ptr->wext.default_key = -1;
4465                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4466                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4467         }
4468 #endif
4469         wdev_unlock(dev->ieee80211_ptr);
4470
4471         return err;
4472 }
4473
4474 /* This function returns an error or the number of nested attributes */
4475 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4476 {
4477         struct nlattr *attr;
4478         int n_entries = 0, tmp;
4479
4480         nla_for_each_nested(attr, nl_attr, tmp) {
4481                 if (nla_len(attr) != ETH_ALEN)
4482                         return -EINVAL;
4483
4484                 n_entries++;
4485         }
4486
4487         return n_entries;
4488 }
4489
4490 /*
4491  * This function parses ACL information and allocates memory for ACL data.
4492  * On successful return, the calling function is responsible to free the
4493  * ACL buffer returned by this function.
4494  */
4495 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4496                                                 struct genl_info *info)
4497 {
4498         enum nl80211_acl_policy acl_policy;
4499         struct nlattr *attr;
4500         struct cfg80211_acl_data *acl;
4501         int i = 0, n_entries, tmp;
4502
4503         if (!wiphy->max_acl_mac_addrs)
4504                 return ERR_PTR(-EOPNOTSUPP);
4505
4506         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4507                 return ERR_PTR(-EINVAL);
4508
4509         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4510         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4511             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4512                 return ERR_PTR(-EINVAL);
4513
4514         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4515                 return ERR_PTR(-EINVAL);
4516
4517         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4518         if (n_entries < 0)
4519                 return ERR_PTR(n_entries);
4520
4521         if (n_entries > wiphy->max_acl_mac_addrs)
4522                 return ERR_PTR(-ENOTSUPP);
4523
4524         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4525         if (!acl)
4526                 return ERR_PTR(-ENOMEM);
4527
4528         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4529                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4530                 i++;
4531         }
4532
4533         acl->n_acl_entries = n_entries;
4534         acl->acl_policy = acl_policy;
4535
4536         return acl;
4537 }
4538
4539 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4540 {
4541         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4542         struct net_device *dev = info->user_ptr[1];
4543         struct cfg80211_acl_data *acl;
4544         int err;
4545
4546         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4547             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4548                 return -EOPNOTSUPP;
4549
4550         if (!dev->ieee80211_ptr->beacon_interval)
4551                 return -EINVAL;
4552
4553         acl = parse_acl_data(&rdev->wiphy, info);
4554         if (IS_ERR(acl))
4555                 return PTR_ERR(acl);
4556
4557         err = rdev_set_mac_acl(rdev, dev, acl);
4558
4559         kfree(acl);
4560
4561         return err;
4562 }
4563
4564 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4565                            u8 *rates, u8 rates_len)
4566 {
4567         u8 i;
4568         u32 mask = 0;
4569
4570         for (i = 0; i < rates_len; i++) {
4571                 int rate = (rates[i] & 0x7f) * 5;
4572                 int ridx;
4573
4574                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4575                         struct ieee80211_rate *srate =
4576                                 &sband->bitrates[ridx];
4577                         if (rate == srate->bitrate) {
4578                                 mask |= 1 << ridx;
4579                                 break;
4580                         }
4581                 }
4582                 if (ridx == sband->n_bitrates)
4583                         return 0; /* rate not found */
4584         }
4585
4586         return mask;
4587 }
4588
4589 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4590                                u8 *rates, u8 rates_len,
4591                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4592 {
4593         u8 i;
4594
4595         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4596
4597         for (i = 0; i < rates_len; i++) {
4598                 int ridx, rbit;
4599
4600                 ridx = rates[i] / 8;
4601                 rbit = BIT(rates[i] % 8);
4602
4603                 /* check validity */
4604                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4605                         return false;
4606
4607                 /* check availability */
4608                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4609                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4610                         mcs[ridx] |= rbit;
4611                 else
4612                         return false;
4613         }
4614
4615         return true;
4616 }
4617
4618 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4619 {
4620         u16 mcs_mask = 0;
4621
4622         switch (vht_mcs_map) {
4623         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4624                 break;
4625         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4626                 mcs_mask = 0x00FF;
4627                 break;
4628         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4629                 mcs_mask = 0x01FF;
4630                 break;
4631         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4632                 mcs_mask = 0x03FF;
4633                 break;
4634         default:
4635                 break;
4636         }
4637
4638         return mcs_mask;
4639 }
4640
4641 static void vht_build_mcs_mask(u16 vht_mcs_map,
4642                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4643 {
4644         u8 nss;
4645
4646         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4647                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4648                 vht_mcs_map >>= 2;
4649         }
4650 }
4651
4652 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4653                              struct nl80211_txrate_vht *txrate,
4654                              u16 mcs[NL80211_VHT_NSS_MAX])
4655 {
4656         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4657         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4658         u8 i;
4659
4660         if (!sband->vht_cap.vht_supported)
4661                 return false;
4662
4663         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4664
4665         /* Build vht_mcs_mask from VHT capabilities */
4666         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4667
4668         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4669                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4670                         mcs[i] = txrate->mcs[i];
4671                 else
4672                         return false;
4673         }
4674
4675         return true;
4676 }
4677
4678 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4679 {
4680         switch (he_mcs_map) {
4681         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4682                 return 0;
4683         case IEEE80211_HE_MCS_SUPPORT_0_7:
4684                 return 0x00FF;
4685         case IEEE80211_HE_MCS_SUPPORT_0_9:
4686                 return 0x03FF;
4687         case IEEE80211_HE_MCS_SUPPORT_0_11:
4688                 return 0xFFF;
4689         default:
4690                 break;
4691         }
4692         return 0;
4693 }
4694
4695 static void he_build_mcs_mask(u16 he_mcs_map,
4696                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4697 {
4698         u8 nss;
4699
4700         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4701                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4702                 he_mcs_map >>= 2;
4703         }
4704 }
4705
4706 static u16 he_get_txmcsmap(struct genl_info *info,
4707                            const struct ieee80211_sta_he_cap *he_cap)
4708 {
4709         struct net_device *dev = info->user_ptr[1];
4710         struct wireless_dev *wdev = dev->ieee80211_ptr;
4711         __le16  tx_mcs;
4712
4713         switch (wdev->chandef.width) {
4714         case NL80211_CHAN_WIDTH_80P80:
4715                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4716                 break;
4717         case NL80211_CHAN_WIDTH_160:
4718                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4719                 break;
4720         default:
4721                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4722                 break;
4723         }
4724         return le16_to_cpu(tx_mcs);
4725 }
4726
4727 static bool he_set_mcs_mask(struct genl_info *info,
4728                             struct wireless_dev *wdev,
4729                             struct ieee80211_supported_band *sband,
4730                             struct nl80211_txrate_he *txrate,
4731                             u16 mcs[NL80211_HE_NSS_MAX])
4732 {
4733         const struct ieee80211_sta_he_cap *he_cap;
4734         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4735         u16 tx_mcs_map = 0;
4736         u8 i;
4737
4738         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4739         if (!he_cap)
4740                 return false;
4741
4742         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4743
4744         tx_mcs_map = he_get_txmcsmap(info, he_cap);
4745
4746         /* Build he_mcs_mask from HE capabilities */
4747         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4748
4749         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4750                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4751                         mcs[i] = txrate->mcs[i];
4752                 else
4753                         return false;
4754         }
4755
4756         return true;
4757 }
4758
4759 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4760                                          struct nlattr *attrs[],
4761                                          enum nl80211_attrs attr,
4762                                          struct cfg80211_bitrate_mask *mask,
4763                                          struct net_device *dev,
4764                                          bool default_all_enabled)
4765 {
4766         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4767         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4768         struct wireless_dev *wdev = dev->ieee80211_ptr;
4769         int rem, i;
4770         struct nlattr *tx_rates;
4771         struct ieee80211_supported_band *sband;
4772         u16 vht_tx_mcs_map, he_tx_mcs_map;
4773
4774         memset(mask, 0, sizeof(*mask));
4775         /* Default to all rates enabled */
4776         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4777                 const struct ieee80211_sta_he_cap *he_cap;
4778
4779                 if (!default_all_enabled)
4780                         break;
4781
4782                 sband = rdev->wiphy.bands[i];
4783
4784                 if (!sband)
4785                         continue;
4786
4787                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4788                 memcpy(mask->control[i].ht_mcs,
4789                        sband->ht_cap.mcs.rx_mask,
4790                        sizeof(mask->control[i].ht_mcs));
4791
4792                 if (sband->vht_cap.vht_supported) {
4793                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4794                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4795                 }
4796
4797                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4798                 if (!he_cap)
4799                         continue;
4800
4801                 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4802                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4803
4804                 mask->control[i].he_gi = 0xFF;
4805                 mask->control[i].he_ltf = 0xFF;
4806         }
4807
4808         /* if no rates are given set it back to the defaults */
4809         if (!attrs[attr])
4810                 goto out;
4811
4812         /* The nested attribute uses enum nl80211_band as the index. This maps
4813          * directly to the enum nl80211_band values used in cfg80211.
4814          */
4815         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4816         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4817                 enum nl80211_band band = nla_type(tx_rates);
4818                 int err;
4819
4820                 if (band < 0 || band >= NUM_NL80211_BANDS)
4821                         return -EINVAL;
4822                 sband = rdev->wiphy.bands[band];
4823                 if (sband == NULL)
4824                         return -EINVAL;
4825                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4826                                                   tx_rates,
4827                                                   nl80211_txattr_policy,
4828                                                   info->extack);
4829                 if (err)
4830                         return err;
4831                 if (tb[NL80211_TXRATE_LEGACY]) {
4832                         mask->control[band].legacy = rateset_to_mask(
4833                                 sband,
4834                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4835                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4836                         if ((mask->control[band].legacy == 0) &&
4837                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4838                                 return -EINVAL;
4839                 }
4840                 if (tb[NL80211_TXRATE_HT]) {
4841                         if (!ht_rateset_to_mask(
4842                                         sband,
4843                                         nla_data(tb[NL80211_TXRATE_HT]),
4844                                         nla_len(tb[NL80211_TXRATE_HT]),
4845                                         mask->control[band].ht_mcs))
4846                                 return -EINVAL;
4847                 }
4848
4849                 if (tb[NL80211_TXRATE_VHT]) {
4850                         if (!vht_set_mcs_mask(
4851                                         sband,
4852                                         nla_data(tb[NL80211_TXRATE_VHT]),
4853                                         mask->control[band].vht_mcs))
4854                                 return -EINVAL;
4855                 }
4856
4857                 if (tb[NL80211_TXRATE_GI]) {
4858                         mask->control[band].gi =
4859                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4860                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4861                                 return -EINVAL;
4862                 }
4863                 if (tb[NL80211_TXRATE_HE] &&
4864                     !he_set_mcs_mask(info, wdev, sband,
4865                                      nla_data(tb[NL80211_TXRATE_HE]),
4866                                      mask->control[band].he_mcs))
4867                         return -EINVAL;
4868
4869                 if (tb[NL80211_TXRATE_HE_GI])
4870                         mask->control[band].he_gi =
4871                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4872                 if (tb[NL80211_TXRATE_HE_LTF])
4873                         mask->control[band].he_ltf =
4874                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4875
4876                 if (mask->control[band].legacy == 0) {
4877                         /* don't allow empty legacy rates if HT, VHT or HE
4878                          * are not even supported.
4879                          */
4880                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4881                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4882                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4883                                 return -EINVAL;
4884
4885                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4886                                 if (mask->control[band].ht_mcs[i])
4887                                         goto out;
4888
4889                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4890                                 if (mask->control[band].vht_mcs[i])
4891                                         goto out;
4892
4893                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4894                                 if (mask->control[band].he_mcs[i])
4895                                         goto out;
4896
4897                         /* legacy and mcs rates may not be both empty */
4898                         return -EINVAL;
4899                 }
4900         }
4901
4902 out:
4903         return 0;
4904 }
4905
4906 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4907                                    enum nl80211_band band,
4908                                    struct cfg80211_bitrate_mask *beacon_rate)
4909 {
4910         u32 count_ht, count_vht, count_he, i;
4911         u32 rate = beacon_rate->control[band].legacy;
4912
4913         /* Allow only one rate */
4914         if (hweight32(rate) > 1)
4915                 return -EINVAL;
4916
4917         count_ht = 0;
4918         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4919                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4920                         return -EINVAL;
4921                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4922                         count_ht++;
4923                         if (count_ht > 1)
4924                                 return -EINVAL;
4925                 }
4926                 if (count_ht && rate)
4927                         return -EINVAL;
4928         }
4929
4930         count_vht = 0;
4931         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4932                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4933                         return -EINVAL;
4934                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4935                         count_vht++;
4936                         if (count_vht > 1)
4937                                 return -EINVAL;
4938                 }
4939                 if (count_vht && rate)
4940                         return -EINVAL;
4941         }
4942
4943         count_he = 0;
4944         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4945                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
4946                         return -EINVAL;
4947                 } else if (beacon_rate->control[band].he_mcs[i]) {
4948                         count_he++;
4949                         if (count_he > 1)
4950                                 return -EINVAL;
4951                 }
4952                 if (count_he && rate)
4953                         return -EINVAL;
4954         }
4955
4956         if ((count_ht && count_vht && count_he) ||
4957             (!rate && !count_ht && !count_vht && !count_he))
4958                 return -EINVAL;
4959
4960         if (rate &&
4961             !wiphy_ext_feature_isset(&rdev->wiphy,
4962                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4963                 return -EINVAL;
4964         if (count_ht &&
4965             !wiphy_ext_feature_isset(&rdev->wiphy,
4966                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4967                 return -EINVAL;
4968         if (count_vht &&
4969             !wiphy_ext_feature_isset(&rdev->wiphy,
4970                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4971                 return -EINVAL;
4972         if (count_he &&
4973             !wiphy_ext_feature_isset(&rdev->wiphy,
4974                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
4975                 return -EINVAL;
4976
4977         return 0;
4978 }
4979
4980 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4981                                 struct nlattr *attrs[],
4982                                 struct cfg80211_beacon_data *bcn)
4983 {
4984         bool haveinfo = false;
4985         int err;
4986
4987         memset(bcn, 0, sizeof(*bcn));
4988
4989         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4990                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4991                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4992                 if (!bcn->head_len)
4993                         return -EINVAL;
4994                 haveinfo = true;
4995         }
4996
4997         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4998                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4999                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
5000                 haveinfo = true;
5001         }
5002
5003         if (!haveinfo)
5004                 return -EINVAL;
5005
5006         if (attrs[NL80211_ATTR_IE]) {
5007                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5008                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5009         }
5010
5011         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5012                 bcn->proberesp_ies =
5013                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5014                 bcn->proberesp_ies_len =
5015                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5016         }
5017
5018         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5019                 bcn->assocresp_ies =
5020                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5021                 bcn->assocresp_ies_len =
5022                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5023         }
5024
5025         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5026                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5027                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5028         }
5029
5030         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5031                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5032
5033                 err = nla_parse_nested_deprecated(tb,
5034                                                   NL80211_FTM_RESP_ATTR_MAX,
5035                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5036                                                   NULL, NULL);
5037                 if (err)
5038                         return err;
5039
5040                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5041                     wiphy_ext_feature_isset(&rdev->wiphy,
5042                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5043                         bcn->ftm_responder = 1;
5044                 else
5045                         return -EOPNOTSUPP;
5046
5047                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5048                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5049                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5050                 }
5051
5052                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5053                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5054                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5055                 }
5056         } else {
5057                 bcn->ftm_responder = -1;
5058         }
5059
5060         return 0;
5061 }
5062
5063 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5064                                     struct ieee80211_he_obss_pd *he_obss_pd)
5065 {
5066         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5067         int err;
5068
5069         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5070                                he_obss_pd_policy, NULL);
5071         if (err)
5072                 return err;
5073
5074         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5075                 return -EINVAL;
5076
5077         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5078
5079         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5080                 he_obss_pd->min_offset =
5081                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5082         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5083                 he_obss_pd->max_offset =
5084                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5085         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5086                 he_obss_pd->non_srg_max_offset =
5087                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5088
5089         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5090                 return -EINVAL;
5091
5092         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5093                 memcpy(he_obss_pd->bss_color_bitmap,
5094                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5095                        sizeof(he_obss_pd->bss_color_bitmap));
5096
5097         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5098                 memcpy(he_obss_pd->partial_bssid_bitmap,
5099                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5100                        sizeof(he_obss_pd->partial_bssid_bitmap));
5101
5102         he_obss_pd->enable = true;
5103
5104         return 0;
5105 }
5106
5107 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5108                                       struct cfg80211_he_bss_color *he_bss_color)
5109 {
5110         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5111         int err;
5112
5113         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5114                                he_bss_color_policy, NULL);
5115         if (err)
5116                 return err;
5117
5118         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5119                 return -EINVAL;
5120
5121         he_bss_color->color =
5122                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5123         he_bss_color->enabled =
5124                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5125         he_bss_color->partial =
5126                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5127
5128         return 0;
5129 }
5130
5131 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5132                                         struct nlattr *attrs,
5133                                         struct cfg80211_ap_settings *params)
5134 {
5135         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5136         int ret;
5137         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5138
5139         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5140                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5141                 return -EINVAL;
5142
5143         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5144                                NULL, NULL);
5145         if (ret)
5146                 return ret;
5147
5148         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5149             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5150             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5151                 return -EINVAL;
5152
5153         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5154         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5155         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5156         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5157
5158         return 0;
5159 }
5160
5161 static int
5162 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5163                                      struct nlattr *attrs,
5164                                      struct cfg80211_ap_settings *params)
5165 {
5166         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5167         int ret;
5168         struct cfg80211_unsol_bcast_probe_resp *presp =
5169                                         &params->unsol_bcast_probe_resp;
5170
5171         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5172                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5173                 return -EINVAL;
5174
5175         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5176                                attrs, NULL, NULL);
5177         if (ret)
5178                 return ret;
5179
5180         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5181             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5182                 return -EINVAL;
5183
5184         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5185         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5186         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5187         return 0;
5188 }
5189
5190 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5191                                             const u8 *rates)
5192 {
5193         int i;
5194
5195         if (!rates)
5196                 return;
5197
5198         for (i = 0; i < rates[1]; i++) {
5199                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5200                         params->ht_required = true;
5201                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5202                         params->vht_required = true;
5203                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5204                         params->he_required = true;
5205                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5206                         params->sae_h2e_required = true;
5207         }
5208 }
5209
5210 /*
5211  * Since the nl80211 API didn't include, from the beginning, attributes about
5212  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5213  * benefit of drivers that rebuild IEs in the firmware.
5214  */
5215 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5216 {
5217         const struct cfg80211_beacon_data *bcn = &params->beacon;
5218         size_t ies_len = bcn->tail_len;
5219         const u8 *ies = bcn->tail;
5220         const u8 *rates;
5221         const u8 *cap;
5222
5223         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5224         nl80211_check_ap_rate_selectors(params, rates);
5225
5226         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5227         nl80211_check_ap_rate_selectors(params, rates);
5228
5229         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5230         if (cap && cap[1] >= sizeof(*params->ht_cap))
5231                 params->ht_cap = (void *)(cap + 2);
5232         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5233         if (cap && cap[1] >= sizeof(*params->vht_cap))
5234                 params->vht_cap = (void *)(cap + 2);
5235         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5236         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5237                 params->he_cap = (void *)(cap + 3);
5238         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5239         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5240                 params->he_oper = (void *)(cap + 3);
5241 }
5242
5243 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5244                                    struct cfg80211_ap_settings *params)
5245 {
5246         struct wireless_dev *wdev;
5247         bool ret = false;
5248
5249         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5250                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5251                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5252                         continue;
5253
5254                 if (!wdev->preset_chandef.chan)
5255                         continue;
5256
5257                 params->chandef = wdev->preset_chandef;
5258                 ret = true;
5259                 break;
5260         }
5261
5262         return ret;
5263 }
5264
5265 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5266                                     enum nl80211_auth_type auth_type,
5267                                     enum nl80211_commands cmd)
5268 {
5269         if (auth_type > NL80211_AUTHTYPE_MAX)
5270                 return false;
5271
5272         switch (cmd) {
5273         case NL80211_CMD_AUTHENTICATE:
5274                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5275                     auth_type == NL80211_AUTHTYPE_SAE)
5276                         return false;
5277                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5278                                              NL80211_EXT_FEATURE_FILS_STA) &&
5279                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5280                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5281                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5282                         return false;
5283                 return true;
5284         case NL80211_CMD_CONNECT:
5285                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5286                     !wiphy_ext_feature_isset(&rdev->wiphy,
5287                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5288                     auth_type == NL80211_AUTHTYPE_SAE)
5289                         return false;
5290
5291                 /* FILS with SK PFS or PK not supported yet */
5292                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5293                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5294                         return false;
5295                 if (!wiphy_ext_feature_isset(
5296                             &rdev->wiphy,
5297                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5298                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5299                         return false;
5300                 return true;
5301         case NL80211_CMD_START_AP:
5302                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5303                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5304                     auth_type == NL80211_AUTHTYPE_SAE)
5305                         return false;
5306                 /* FILS not supported yet */
5307                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5308                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5309                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5310                         return false;
5311                 return true;
5312         default:
5313                 return false;
5314         }
5315 }
5316
5317 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5318 {
5319         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5320         struct net_device *dev = info->user_ptr[1];
5321         struct wireless_dev *wdev = dev->ieee80211_ptr;
5322         struct cfg80211_ap_settings params;
5323         int err;
5324
5325         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5326             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5327                 return -EOPNOTSUPP;
5328
5329         if (!rdev->ops->start_ap)
5330                 return -EOPNOTSUPP;
5331
5332         if (wdev->beacon_interval)
5333                 return -EALREADY;
5334
5335         memset(&params, 0, sizeof(params));
5336
5337         /* these are required for START_AP */
5338         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5339             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5340             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5341                 return -EINVAL;
5342
5343         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
5344         if (err)
5345                 return err;
5346
5347         params.beacon_interval =
5348                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5349         params.dtim_period =
5350                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5351
5352         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5353                                            params.beacon_interval);
5354         if (err)
5355                 return err;
5356
5357         /*
5358          * In theory, some of these attributes should be required here
5359          * but since they were not used when the command was originally
5360          * added, keep them optional for old user space programs to let
5361          * them continue to work with drivers that do not need the
5362          * additional information -- drivers must check!
5363          */
5364         if (info->attrs[NL80211_ATTR_SSID]) {
5365                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5366                 params.ssid_len =
5367                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5368                 if (params.ssid_len == 0)
5369                         return -EINVAL;
5370         }
5371
5372         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5373                 params.hidden_ssid = nla_get_u32(
5374                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5375
5376         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5377
5378         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5379                 params.auth_type = nla_get_u32(
5380                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5381                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5382                                              NL80211_CMD_START_AP))
5383                         return -EINVAL;
5384         } else
5385                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5386
5387         err = nl80211_crypto_settings(rdev, info, &params.crypto,
5388                                       NL80211_MAX_NR_CIPHER_SUITES);
5389         if (err)
5390                 return err;
5391
5392         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5393                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5394                         return -EOPNOTSUPP;
5395                 params.inactivity_timeout = nla_get_u16(
5396                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5397         }
5398
5399         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5400                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5401                         return -EINVAL;
5402                 params.p2p_ctwindow =
5403                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5404                 if (params.p2p_ctwindow != 0 &&
5405                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5406                         return -EINVAL;
5407         }
5408
5409         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5410                 u8 tmp;
5411
5412                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5413                         return -EINVAL;
5414                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5415                 params.p2p_opp_ps = tmp;
5416                 if (params.p2p_opp_ps != 0 &&
5417                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5418                         return -EINVAL;
5419         }
5420
5421         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5422                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5423                 if (err)
5424                         return err;
5425         } else if (wdev->preset_chandef.chan) {
5426                 params.chandef = wdev->preset_chandef;
5427         } else if (!nl80211_get_ap_channel(rdev, &params))
5428                 return -EINVAL;
5429
5430         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
5431                                            wdev->iftype))
5432                 return -EINVAL;
5433
5434         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5435                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5436                                                     NL80211_ATTR_TX_RATES,
5437                                                     &params.beacon_rate,
5438                                                     dev, false);
5439                 if (err)
5440                         return err;
5441
5442                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5443                                               &params.beacon_rate);
5444                 if (err)
5445                         return err;
5446         }
5447
5448         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5449                 params.smps_mode =
5450                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5451                 switch (params.smps_mode) {
5452                 case NL80211_SMPS_OFF:
5453                         break;
5454                 case NL80211_SMPS_STATIC:
5455                         if (!(rdev->wiphy.features &
5456                               NL80211_FEATURE_STATIC_SMPS))
5457                                 return -EINVAL;
5458                         break;
5459                 case NL80211_SMPS_DYNAMIC:
5460                         if (!(rdev->wiphy.features &
5461                               NL80211_FEATURE_DYNAMIC_SMPS))
5462                                 return -EINVAL;
5463                         break;
5464                 default:
5465                         return -EINVAL;
5466                 }
5467         } else {
5468                 params.smps_mode = NL80211_SMPS_OFF;
5469         }
5470
5471         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5472         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5473                 return -EOPNOTSUPP;
5474
5475         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5476                 params.acl = parse_acl_data(&rdev->wiphy, info);
5477                 if (IS_ERR(params.acl))
5478                         return PTR_ERR(params.acl);
5479         }
5480
5481         params.twt_responder =
5482                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5483
5484         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5485                 err = nl80211_parse_he_obss_pd(
5486                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5487                                         &params.he_obss_pd);
5488                 if (err)
5489                         goto out;
5490         }
5491
5492         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5493                 err = nl80211_parse_he_bss_color(
5494                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5495                                         &params.he_bss_color);
5496                 if (err)
5497                         goto out;
5498         }
5499
5500         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5501                 err = nl80211_parse_fils_discovery(rdev,
5502                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5503                                                    &params);
5504                 if (err)
5505                         goto out;
5506         }
5507
5508         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5509                 err = nl80211_parse_unsol_bcast_probe_resp(
5510                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5511                         &params);
5512                 if (err)
5513                         goto out;
5514         }
5515
5516         nl80211_calculate_ap_params(&params);
5517
5518         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5519                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5520
5521         wdev_lock(wdev);
5522         err = rdev_start_ap(rdev, dev, &params);
5523         if (!err) {
5524                 wdev->preset_chandef = params.chandef;
5525                 wdev->beacon_interval = params.beacon_interval;
5526                 wdev->chandef = params.chandef;
5527                 wdev->ssid_len = params.ssid_len;
5528                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5529
5530                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5531                         wdev->conn_owner_nlportid = info->snd_portid;
5532         }
5533         wdev_unlock(wdev);
5534
5535 out:
5536         kfree(params.acl);
5537
5538         return err;
5539 }
5540
5541 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5542 {
5543         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5544         struct net_device *dev = info->user_ptr[1];
5545         struct wireless_dev *wdev = dev->ieee80211_ptr;
5546         struct cfg80211_beacon_data params;
5547         int err;
5548
5549         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5550             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5551                 return -EOPNOTSUPP;
5552
5553         if (!rdev->ops->change_beacon)
5554                 return -EOPNOTSUPP;
5555
5556         if (!wdev->beacon_interval)
5557                 return -EINVAL;
5558
5559         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5560         if (err)
5561                 return err;
5562
5563         wdev_lock(wdev);
5564         err = rdev_change_beacon(rdev, dev, &params);
5565         wdev_unlock(wdev);
5566
5567         return err;
5568 }
5569
5570 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5571 {
5572         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5573         struct net_device *dev = info->user_ptr[1];
5574
5575         return cfg80211_stop_ap(rdev, dev, false);
5576 }
5577
5578 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5579         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5580         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5581         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5582         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5583         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5584         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5585 };
5586
5587 static int parse_station_flags(struct genl_info *info,
5588                                enum nl80211_iftype iftype,
5589                                struct station_parameters *params)
5590 {
5591         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5592         struct nlattr *nla;
5593         int flag;
5594
5595         /*
5596          * Try parsing the new attribute first so userspace
5597          * can specify both for older kernels.
5598          */
5599         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5600         if (nla) {
5601                 struct nl80211_sta_flag_update *sta_flags;
5602
5603                 sta_flags = nla_data(nla);
5604                 params->sta_flags_mask = sta_flags->mask;
5605                 params->sta_flags_set = sta_flags->set;
5606                 params->sta_flags_set &= params->sta_flags_mask;
5607                 if ((params->sta_flags_mask |
5608                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5609                         return -EINVAL;
5610                 return 0;
5611         }
5612
5613         /* if present, parse the old attribute */
5614
5615         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5616         if (!nla)
5617                 return 0;
5618
5619         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5620                 return -EINVAL;
5621
5622         /*
5623          * Only allow certain flags for interface types so that
5624          * other attributes are silently ignored. Remember that
5625          * this is backward compatibility code with old userspace
5626          * and shouldn't be hit in other cases anyway.
5627          */
5628         switch (iftype) {
5629         case NL80211_IFTYPE_AP:
5630         case NL80211_IFTYPE_AP_VLAN:
5631         case NL80211_IFTYPE_P2P_GO:
5632                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5633                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5634                                          BIT(NL80211_STA_FLAG_WME) |
5635                                          BIT(NL80211_STA_FLAG_MFP);
5636                 break;
5637         case NL80211_IFTYPE_P2P_CLIENT:
5638         case NL80211_IFTYPE_STATION:
5639                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5640                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5641                 break;
5642         case NL80211_IFTYPE_MESH_POINT:
5643                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5644                                          BIT(NL80211_STA_FLAG_MFP) |
5645                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5646                 break;
5647         default:
5648                 return -EINVAL;
5649         }
5650
5651         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5652                 if (flags[flag]) {
5653                         params->sta_flags_set |= (1<<flag);
5654
5655                         /* no longer support new API additions in old API */
5656                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5657                                 return -EINVAL;
5658                 }
5659         }
5660
5661         return 0;
5662 }
5663
5664 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5665 {
5666         struct nlattr *rate;
5667         u32 bitrate;
5668         u16 bitrate_compat;
5669         enum nl80211_rate_info rate_flg;
5670
5671         rate = nla_nest_start_noflag(msg, attr);
5672         if (!rate)
5673                 return false;
5674
5675         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5676         bitrate = cfg80211_calculate_bitrate(info);
5677         /* report 16-bit bitrate only if we can */
5678         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5679         if (bitrate > 0 &&
5680             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5681                 return false;
5682         if (bitrate_compat > 0 &&
5683             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5684                 return false;
5685
5686         switch (info->bw) {
5687         case RATE_INFO_BW_5:
5688                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5689                 break;
5690         case RATE_INFO_BW_10:
5691                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5692                 break;
5693         default:
5694                 WARN_ON(1);
5695                 fallthrough;
5696         case RATE_INFO_BW_20:
5697                 rate_flg = 0;
5698                 break;
5699         case RATE_INFO_BW_40:
5700                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5701                 break;
5702         case RATE_INFO_BW_80:
5703                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5704                 break;
5705         case RATE_INFO_BW_160:
5706                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5707                 break;
5708         case RATE_INFO_BW_HE_RU:
5709                 rate_flg = 0;
5710                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5711         }
5712
5713         if (rate_flg && nla_put_flag(msg, rate_flg))
5714                 return false;
5715
5716         if (info->flags & RATE_INFO_FLAGS_MCS) {
5717                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5718                         return false;
5719                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5720                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5721                         return false;
5722         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5723                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5724                         return false;
5725                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5726                         return false;
5727                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5728                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5729                         return false;
5730         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5731                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5732                         return false;
5733                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5734                         return false;
5735                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5736                         return false;
5737                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5738                         return false;
5739                 if (info->bw == RATE_INFO_BW_HE_RU &&
5740                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5741                                info->he_ru_alloc))
5742                         return false;
5743         }
5744
5745         nla_nest_end(msg, rate);
5746         return true;
5747 }
5748
5749 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5750                                int id)
5751 {
5752         void *attr;
5753         int i = 0;
5754
5755         if (!mask)
5756                 return true;
5757
5758         attr = nla_nest_start_noflag(msg, id);
5759         if (!attr)
5760                 return false;
5761
5762         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5763                 if (!(mask & BIT(i)))
5764                         continue;
5765
5766                 if (nla_put_u8(msg, i, signal[i]))
5767                         return false;
5768         }
5769
5770         nla_nest_end(msg, attr);
5771
5772         return true;
5773 }
5774
5775 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5776                                 u32 seq, int flags,
5777                                 struct cfg80211_registered_device *rdev,
5778                                 struct net_device *dev,
5779                                 const u8 *mac_addr, struct station_info *sinfo)
5780 {
5781         void *hdr;
5782         struct nlattr *sinfoattr, *bss_param;
5783
5784         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5785         if (!hdr) {
5786                 cfg80211_sinfo_release_content(sinfo);
5787                 return -1;
5788         }
5789
5790         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5791             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5792             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5793                 goto nla_put_failure;
5794
5795         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5796         if (!sinfoattr)
5797                 goto nla_put_failure;
5798
5799 #define PUT_SINFO(attr, memb, type) do {                                \
5800         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5801         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5802             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5803                              sinfo->memb))                              \
5804                 goto nla_put_failure;                                   \
5805         } while (0)
5806 #define PUT_SINFO_U64(attr, memb) do {                                  \
5807         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5808             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5809                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5810                 goto nla_put_failure;                                   \
5811         } while (0)
5812
5813         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5814         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5815         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5816
5817         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5818                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5819             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5820                         (u32)sinfo->rx_bytes))
5821                 goto nla_put_failure;
5822
5823         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5824                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5825             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5826                         (u32)sinfo->tx_bytes))
5827                 goto nla_put_failure;
5828
5829         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5830         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5831         PUT_SINFO(LLID, llid, u16);
5832         PUT_SINFO(PLID, plid, u16);
5833         PUT_SINFO(PLINK_STATE, plink_state, u8);
5834         PUT_SINFO_U64(RX_DURATION, rx_duration);
5835         PUT_SINFO_U64(TX_DURATION, tx_duration);
5836
5837         if (wiphy_ext_feature_isset(&rdev->wiphy,
5838                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5839                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5840
5841         switch (rdev->wiphy.signal_type) {
5842         case CFG80211_SIGNAL_TYPE_MBM:
5843                 PUT_SINFO(SIGNAL, signal, u8);
5844                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5845                 break;
5846         default:
5847                 break;
5848         }
5849         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5850                 if (!nl80211_put_signal(msg, sinfo->chains,
5851                                         sinfo->chain_signal,
5852                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5853                         goto nla_put_failure;
5854         }
5855         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5856                 if (!nl80211_put_signal(msg, sinfo->chains,
5857                                         sinfo->chain_signal_avg,
5858                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5859                         goto nla_put_failure;
5860         }
5861         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5862                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5863                                           NL80211_STA_INFO_TX_BITRATE))
5864                         goto nla_put_failure;
5865         }
5866         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5867                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5868                                           NL80211_STA_INFO_RX_BITRATE))
5869                         goto nla_put_failure;
5870         }
5871
5872         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5873         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5874         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5875         PUT_SINFO(TX_FAILED, tx_failed, u32);
5876         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5877         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5878         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5879         PUT_SINFO(LOCAL_PM, local_pm, u32);
5880         PUT_SINFO(PEER_PM, peer_pm, u32);
5881         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5882         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5883         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5884
5885         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5886                 bss_param = nla_nest_start_noflag(msg,
5887                                                   NL80211_STA_INFO_BSS_PARAM);
5888                 if (!bss_param)
5889                         goto nla_put_failure;
5890
5891                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5892                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5893                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5894                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5895                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5896                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5897                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5898                                sinfo->bss_param.dtim_period) ||
5899                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5900                                 sinfo->bss_param.beacon_interval))
5901                         goto nla_put_failure;
5902
5903                 nla_nest_end(msg, bss_param);
5904         }
5905         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5906             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5907                     sizeof(struct nl80211_sta_flag_update),
5908                     &sinfo->sta_flags))
5909                 goto nla_put_failure;
5910
5911         PUT_SINFO_U64(T_OFFSET, t_offset);
5912         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5913         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5914         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5915         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5916         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5917         if (wiphy_ext_feature_isset(&rdev->wiphy,
5918                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5919                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5920                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5921         }
5922
5923 #undef PUT_SINFO
5924 #undef PUT_SINFO_U64
5925
5926         if (sinfo->pertid) {
5927                 struct nlattr *tidsattr;
5928                 int tid;
5929
5930                 tidsattr = nla_nest_start_noflag(msg,
5931                                                  NL80211_STA_INFO_TID_STATS);
5932                 if (!tidsattr)
5933                         goto nla_put_failure;
5934
5935                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5936                         struct cfg80211_tid_stats *tidstats;
5937                         struct nlattr *tidattr;
5938
5939                         tidstats = &sinfo->pertid[tid];
5940
5941                         if (!tidstats->filled)
5942                                 continue;
5943
5944                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5945                         if (!tidattr)
5946                                 goto nla_put_failure;
5947
5948 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5949         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5950             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5951                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5952                 goto nla_put_failure;                                   \
5953         } while (0)
5954
5955                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5956                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5957                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5958                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5959
5960 #undef PUT_TIDVAL_U64
5961                         if ((tidstats->filled &
5962                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5963                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5964                                                    NL80211_TID_STATS_TXQ_STATS))
5965                                 goto nla_put_failure;
5966
5967                         nla_nest_end(msg, tidattr);
5968                 }
5969
5970                 nla_nest_end(msg, tidsattr);
5971         }
5972
5973         nla_nest_end(msg, sinfoattr);
5974
5975         if (sinfo->assoc_req_ies_len &&
5976             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5977                     sinfo->assoc_req_ies))
5978                 goto nla_put_failure;
5979
5980         cfg80211_sinfo_release_content(sinfo);
5981         genlmsg_end(msg, hdr);
5982         return 0;
5983
5984  nla_put_failure:
5985         cfg80211_sinfo_release_content(sinfo);
5986         genlmsg_cancel(msg, hdr);
5987         return -EMSGSIZE;
5988 }
5989
5990 static int nl80211_dump_station(struct sk_buff *skb,
5991                                 struct netlink_callback *cb)
5992 {
5993         struct station_info sinfo;
5994         struct cfg80211_registered_device *rdev;
5995         struct wireless_dev *wdev;
5996         u8 mac_addr[ETH_ALEN];
5997         int sta_idx = cb->args[2];
5998         int err;
5999
6000         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6001         if (err)
6002                 return err;
6003         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6004         __acquire(&rdev->wiphy.mtx);
6005
6006         if (!wdev->netdev) {
6007                 err = -EINVAL;
6008                 goto out_err;
6009         }
6010
6011         if (!rdev->ops->dump_station) {
6012                 err = -EOPNOTSUPP;
6013                 goto out_err;
6014         }
6015
6016         while (1) {
6017                 memset(&sinfo, 0, sizeof(sinfo));
6018                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6019                                         mac_addr, &sinfo);
6020                 if (err == -ENOENT)
6021                         break;
6022                 if (err)
6023                         goto out_err;
6024
6025                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6026                                 NETLINK_CB(cb->skb).portid,
6027                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6028                                 rdev, wdev->netdev, mac_addr,
6029                                 &sinfo) < 0)
6030                         goto out;
6031
6032                 sta_idx++;
6033         }
6034
6035  out:
6036         cb->args[2] = sta_idx;
6037         err = skb->len;
6038  out_err:
6039         wiphy_unlock(&rdev->wiphy);
6040
6041         return err;
6042 }
6043
6044 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6045 {
6046         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6047         struct net_device *dev = info->user_ptr[1];
6048         struct station_info sinfo;
6049         struct sk_buff *msg;
6050         u8 *mac_addr = NULL;
6051         int err;
6052
6053         memset(&sinfo, 0, sizeof(sinfo));
6054
6055         if (!info->attrs[NL80211_ATTR_MAC])
6056                 return -EINVAL;
6057
6058         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6059
6060         if (!rdev->ops->get_station)
6061                 return -EOPNOTSUPP;
6062
6063         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6064         if (err)
6065                 return err;
6066
6067         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6068         if (!msg) {
6069                 cfg80211_sinfo_release_content(&sinfo);
6070                 return -ENOMEM;
6071         }
6072
6073         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6074                                  info->snd_portid, info->snd_seq, 0,
6075                                  rdev, dev, mac_addr, &sinfo) < 0) {
6076                 nlmsg_free(msg);
6077                 return -ENOBUFS;
6078         }
6079
6080         return genlmsg_reply(msg, info);
6081 }
6082
6083 int cfg80211_check_station_change(struct wiphy *wiphy,
6084                                   struct station_parameters *params,
6085                                   enum cfg80211_station_type statype)
6086 {
6087         if (params->listen_interval != -1 &&
6088             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6089                 return -EINVAL;
6090
6091         if (params->support_p2p_ps != -1 &&
6092             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6093                 return -EINVAL;
6094
6095         if (params->aid &&
6096             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6097             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6098                 return -EINVAL;
6099
6100         /* When you run into this, adjust the code below for the new flag */
6101         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6102
6103         switch (statype) {
6104         case CFG80211_STA_MESH_PEER_KERNEL:
6105         case CFG80211_STA_MESH_PEER_USER:
6106                 /*
6107                  * No ignoring the TDLS flag here -- the userspace mesh
6108                  * code doesn't have the bug of including TDLS in the
6109                  * mask everywhere.
6110                  */
6111                 if (params->sta_flags_mask &
6112                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6113                                   BIT(NL80211_STA_FLAG_MFP) |
6114                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6115                         return -EINVAL;
6116                 break;
6117         case CFG80211_STA_TDLS_PEER_SETUP:
6118         case CFG80211_STA_TDLS_PEER_ACTIVE:
6119                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6120                         return -EINVAL;
6121                 /* ignore since it can't change */
6122                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6123                 break;
6124         default:
6125                 /* disallow mesh-specific things */
6126                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6127                         return -EINVAL;
6128                 if (params->local_pm)
6129                         return -EINVAL;
6130                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6131                         return -EINVAL;
6132         }
6133
6134         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6135             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6136                 /* TDLS can't be set, ... */
6137                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6138                         return -EINVAL;
6139                 /*
6140                  * ... but don't bother the driver with it. This works around
6141                  * a hostapd/wpa_supplicant issue -- it always includes the
6142                  * TLDS_PEER flag in the mask even for AP mode.
6143                  */
6144                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6145         }
6146
6147         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6148             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6149                 /* reject other things that can't change */
6150                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6151                         return -EINVAL;
6152                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6153                         return -EINVAL;
6154                 if (params->supported_rates)
6155                         return -EINVAL;
6156                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
6157                     params->he_capa)
6158                         return -EINVAL;
6159         }
6160
6161         if (statype != CFG80211_STA_AP_CLIENT &&
6162             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6163                 if (params->vlan)
6164                         return -EINVAL;
6165         }
6166
6167         switch (statype) {
6168         case CFG80211_STA_AP_MLME_CLIENT:
6169                 /* Use this only for authorizing/unauthorizing a station */
6170                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6171                         return -EOPNOTSUPP;
6172                 break;
6173         case CFG80211_STA_AP_CLIENT:
6174         case CFG80211_STA_AP_CLIENT_UNASSOC:
6175                 /* accept only the listed bits */
6176                 if (params->sta_flags_mask &
6177                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6178                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6179                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6180                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6181                                   BIT(NL80211_STA_FLAG_WME) |
6182                                   BIT(NL80211_STA_FLAG_MFP)))
6183                         return -EINVAL;
6184
6185                 /* but authenticated/associated only if driver handles it */
6186                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6187                     params->sta_flags_mask &
6188                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6189                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6190                         return -EINVAL;
6191                 break;
6192         case CFG80211_STA_IBSS:
6193         case CFG80211_STA_AP_STA:
6194                 /* reject any changes other than AUTHORIZED */
6195                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6196                         return -EINVAL;
6197                 break;
6198         case CFG80211_STA_TDLS_PEER_SETUP:
6199                 /* reject any changes other than AUTHORIZED or WME */
6200                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6201                                                BIT(NL80211_STA_FLAG_WME)))
6202                         return -EINVAL;
6203                 /* force (at least) rates when authorizing */
6204                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6205                     !params->supported_rates)
6206                         return -EINVAL;
6207                 break;
6208         case CFG80211_STA_TDLS_PEER_ACTIVE:
6209                 /* reject any changes */
6210                 return -EINVAL;
6211         case CFG80211_STA_MESH_PEER_KERNEL:
6212                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6213                         return -EINVAL;
6214                 break;
6215         case CFG80211_STA_MESH_PEER_USER:
6216                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6217                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6218                         return -EINVAL;
6219                 break;
6220         }
6221
6222         /*
6223          * Older kernel versions ignored this attribute entirely, so don't
6224          * reject attempts to update it but mark it as unused instead so the
6225          * driver won't look at the data.
6226          */
6227         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6228             statype != CFG80211_STA_TDLS_PEER_SETUP)
6229                 params->opmode_notif_used = false;
6230
6231         return 0;
6232 }
6233 EXPORT_SYMBOL(cfg80211_check_station_change);
6234
6235 /*
6236  * Get vlan interface making sure it is running and on the right wiphy.
6237  */
6238 static struct net_device *get_vlan(struct genl_info *info,
6239                                    struct cfg80211_registered_device *rdev)
6240 {
6241         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6242         struct net_device *v;
6243         int ret;
6244
6245         if (!vlanattr)
6246                 return NULL;
6247
6248         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6249         if (!v)
6250                 return ERR_PTR(-ENODEV);
6251
6252         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6253                 ret = -EINVAL;
6254                 goto error;
6255         }
6256
6257         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6258             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6259             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6260                 ret = -EINVAL;
6261                 goto error;
6262         }
6263
6264         if (!netif_running(v)) {
6265                 ret = -ENETDOWN;
6266                 goto error;
6267         }
6268
6269         return v;
6270  error:
6271         dev_put(v);
6272         return ERR_PTR(ret);
6273 }
6274
6275 static const struct nla_policy
6276 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6277         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6278         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6279 };
6280
6281 static int nl80211_parse_sta_wme(struct genl_info *info,
6282                                  struct station_parameters *params)
6283 {
6284         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6285         struct nlattr *nla;
6286         int err;
6287
6288         /* parse WME attributes if present */
6289         if (!info->attrs[NL80211_ATTR_STA_WME])
6290                 return 0;
6291
6292         nla = info->attrs[NL80211_ATTR_STA_WME];
6293         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6294                                           nl80211_sta_wme_policy,
6295                                           info->extack);
6296         if (err)
6297                 return err;
6298
6299         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6300                 params->uapsd_queues = nla_get_u8(
6301                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6302         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6303                 return -EINVAL;
6304
6305         if (tb[NL80211_STA_WME_MAX_SP])
6306                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6307
6308         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6309                 return -EINVAL;
6310
6311         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6312
6313         return 0;
6314 }
6315
6316 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6317                                       struct station_parameters *params)
6318 {
6319         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6320                 params->supported_channels =
6321                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6322                 params->supported_channels_len =
6323                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6324                 /*
6325                  * Need to include at least one (first channel, number of
6326                  * channels) tuple for each subband (checked in policy),
6327                  * and must have proper tuples for the rest of the data as well.
6328                  */
6329                 if (params->supported_channels_len % 2)
6330                         return -EINVAL;
6331         }
6332
6333         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6334                 params->supported_oper_classes =
6335                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6336                 params->supported_oper_classes_len =
6337                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6338         }
6339         return 0;
6340 }
6341
6342 static int nl80211_set_station_tdls(struct genl_info *info,
6343                                     struct station_parameters *params)
6344 {
6345         int err;
6346         /* Dummy STA entry gets updated once the peer capabilities are known */
6347         if (info->attrs[NL80211_ATTR_PEER_AID])
6348                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6349         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6350                 params->ht_capa =
6351                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6352         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6353                 params->vht_capa =
6354                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6355         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6356                 params->he_capa =
6357                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6358                 params->he_capa_len =
6359                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6360         }
6361
6362         err = nl80211_parse_sta_channel_info(info, params);
6363         if (err)
6364                 return err;
6365
6366         return nl80211_parse_sta_wme(info, params);
6367 }
6368
6369 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6370                                              struct station_parameters *params)
6371 {
6372         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6373         int idx;
6374
6375         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6376                 if (!rdev->ops->set_tx_power ||
6377                     !wiphy_ext_feature_isset(&rdev->wiphy,
6378                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6379                         return -EOPNOTSUPP;
6380
6381                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6382                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6383
6384                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6385                         idx = NL80211_ATTR_STA_TX_POWER;
6386
6387                         if (info->attrs[idx])
6388                                 params->txpwr.power =
6389                                         nla_get_s16(info->attrs[idx]);
6390                         else
6391                                 return -EINVAL;
6392                 }
6393                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6394         }
6395
6396         return 0;
6397 }
6398
6399 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6400 {
6401         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6402         struct net_device *dev = info->user_ptr[1];
6403         struct station_parameters params;
6404         u8 *mac_addr;
6405         int err;
6406
6407         memset(&params, 0, sizeof(params));
6408
6409         if (!rdev->ops->change_station)
6410                 return -EOPNOTSUPP;
6411
6412         /*
6413          * AID and listen_interval properties can be set only for unassociated
6414          * station. Include these parameters here and will check them in
6415          * cfg80211_check_station_change().
6416          */
6417         if (info->attrs[NL80211_ATTR_STA_AID])
6418                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6419
6420         if (info->attrs[NL80211_ATTR_VLAN_ID])
6421                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6422
6423         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6424                 params.listen_interval =
6425                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6426         else
6427                 params.listen_interval = -1;
6428
6429         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6430                 params.support_p2p_ps =
6431                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6432         else
6433                 params.support_p2p_ps = -1;
6434
6435         if (!info->attrs[NL80211_ATTR_MAC])
6436                 return -EINVAL;
6437
6438         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6439
6440         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6441                 params.supported_rates =
6442                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6443                 params.supported_rates_len =
6444                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6445         }
6446
6447         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6448                 params.capability =
6449                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6450                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6451         }
6452
6453         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6454                 params.ext_capab =
6455                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6456                 params.ext_capab_len =
6457                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6458         }
6459
6460         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6461                 return -EINVAL;
6462
6463         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6464                 params.plink_action =
6465                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6466
6467         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6468                 params.plink_state =
6469                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6470                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6471                         params.peer_aid = nla_get_u16(
6472                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6473                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6474         }
6475
6476         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6477                 params.local_pm = nla_get_u32(
6478                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6479
6480         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6481                 params.opmode_notif_used = true;
6482                 params.opmode_notif =
6483                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6484         }
6485
6486         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6487                 params.he_6ghz_capa =
6488                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6489
6490         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6491                 params.airtime_weight =
6492                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6493
6494         if (params.airtime_weight &&
6495             !wiphy_ext_feature_isset(&rdev->wiphy,
6496                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6497                 return -EOPNOTSUPP;
6498
6499         err = nl80211_parse_sta_txpower_setting(info, &params);
6500         if (err)
6501                 return err;
6502
6503         /* Include parameters for TDLS peer (will check later) */
6504         err = nl80211_set_station_tdls(info, &params);
6505         if (err)
6506                 return err;
6507
6508         params.vlan = get_vlan(info, rdev);
6509         if (IS_ERR(params.vlan))
6510                 return PTR_ERR(params.vlan);
6511
6512         switch (dev->ieee80211_ptr->iftype) {
6513         case NL80211_IFTYPE_AP:
6514         case NL80211_IFTYPE_AP_VLAN:
6515         case NL80211_IFTYPE_P2P_GO:
6516         case NL80211_IFTYPE_P2P_CLIENT:
6517         case NL80211_IFTYPE_STATION:
6518         case NL80211_IFTYPE_ADHOC:
6519         case NL80211_IFTYPE_MESH_POINT:
6520                 break;
6521         default:
6522                 err = -EOPNOTSUPP;
6523                 goto out_put_vlan;
6524         }
6525
6526         /* driver will call cfg80211_check_station_change() */
6527         err = rdev_change_station(rdev, dev, mac_addr, &params);
6528
6529  out_put_vlan:
6530         if (params.vlan)
6531                 dev_put(params.vlan);
6532
6533         return err;
6534 }
6535
6536 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6537 {
6538         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6539         int err;
6540         struct net_device *dev = info->user_ptr[1];
6541         struct station_parameters params;
6542         u8 *mac_addr = NULL;
6543         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6544                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6545
6546         memset(&params, 0, sizeof(params));
6547
6548         if (!rdev->ops->add_station)
6549                 return -EOPNOTSUPP;
6550
6551         if (!info->attrs[NL80211_ATTR_MAC])
6552                 return -EINVAL;
6553
6554         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6555                 return -EINVAL;
6556
6557         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6558                 return -EINVAL;
6559
6560         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6561             !info->attrs[NL80211_ATTR_PEER_AID])
6562                 return -EINVAL;
6563
6564         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6565         params.supported_rates =
6566                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6567         params.supported_rates_len =
6568                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6569         params.listen_interval =
6570                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6571
6572         if (info->attrs[NL80211_ATTR_VLAN_ID])
6573                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6574
6575         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6576                 params.support_p2p_ps =
6577                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6578         } else {
6579                 /*
6580                  * if not specified, assume it's supported for P2P GO interface,
6581                  * and is NOT supported for AP interface
6582                  */
6583                 params.support_p2p_ps =
6584                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6585         }
6586
6587         if (info->attrs[NL80211_ATTR_PEER_AID])
6588                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6589         else
6590                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6591
6592         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6593                 params.capability =
6594                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6595                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6596         }
6597
6598         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6599                 params.ext_capab =
6600                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6601                 params.ext_capab_len =
6602                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6603         }
6604
6605         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6606                 params.ht_capa =
6607                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6608
6609         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6610                 params.vht_capa =
6611                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6612
6613         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6614                 params.he_capa =
6615                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6616                 params.he_capa_len =
6617                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6618         }
6619
6620         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6621                 params.he_6ghz_capa =
6622                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6623
6624         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6625                 params.opmode_notif_used = true;
6626                 params.opmode_notif =
6627                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6628         }
6629
6630         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6631                 params.plink_action =
6632                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6633
6634         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6635                 params.airtime_weight =
6636                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6637
6638         if (params.airtime_weight &&
6639             !wiphy_ext_feature_isset(&rdev->wiphy,
6640                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6641                 return -EOPNOTSUPP;
6642
6643         err = nl80211_parse_sta_txpower_setting(info, &params);
6644         if (err)
6645                 return err;
6646
6647         err = nl80211_parse_sta_channel_info(info, &params);
6648         if (err)
6649                 return err;
6650
6651         err = nl80211_parse_sta_wme(info, &params);
6652         if (err)
6653                 return err;
6654
6655         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6656                 return -EINVAL;
6657
6658         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6659          * as userspace might just pass through the capabilities from the IEs
6660          * directly, rather than enforcing this restriction and returning an
6661          * error in this case.
6662          */
6663         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6664                 params.ht_capa = NULL;
6665                 params.vht_capa = NULL;
6666
6667                 /* HE requires WME */
6668                 if (params.he_capa_len || params.he_6ghz_capa)
6669                         return -EINVAL;
6670         }
6671
6672         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6673         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6674                 return -EINVAL;
6675
6676         /* When you run into this, adjust the code below for the new flag */
6677         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6678
6679         switch (dev->ieee80211_ptr->iftype) {
6680         case NL80211_IFTYPE_AP:
6681         case NL80211_IFTYPE_AP_VLAN:
6682         case NL80211_IFTYPE_P2P_GO:
6683                 /* ignore WME attributes if iface/sta is not capable */
6684                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6685                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6686                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6687
6688                 /* TDLS peers cannot be added */
6689                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6690                     info->attrs[NL80211_ATTR_PEER_AID])
6691                         return -EINVAL;
6692                 /* but don't bother the driver with it */
6693                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6694
6695                 /* allow authenticated/associated only if driver handles it */
6696                 if (!(rdev->wiphy.features &
6697                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6698                     params.sta_flags_mask & auth_assoc)
6699                         return -EINVAL;
6700
6701                 /* Older userspace, or userspace wanting to be compatible with
6702                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6703                  * and assoc flags in the mask, but assumes the station will be
6704                  * added as associated anyway since this was the required driver
6705                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6706                  * introduced.
6707                  * In order to not bother drivers with this quirk in the API
6708                  * set the flags in both the mask and set for new stations in
6709                  * this case.
6710                  */
6711                 if (!(params.sta_flags_mask & auth_assoc)) {
6712                         params.sta_flags_mask |= auth_assoc;
6713                         params.sta_flags_set |= auth_assoc;
6714                 }
6715
6716                 /* must be last in here for error handling */
6717                 params.vlan = get_vlan(info, rdev);
6718                 if (IS_ERR(params.vlan))
6719                         return PTR_ERR(params.vlan);
6720                 break;
6721         case NL80211_IFTYPE_MESH_POINT:
6722                 /* ignore uAPSD data */
6723                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6724
6725                 /* associated is disallowed */
6726                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6727                         return -EINVAL;
6728                 /* TDLS peers cannot be added */
6729                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6730                     info->attrs[NL80211_ATTR_PEER_AID])
6731                         return -EINVAL;
6732                 break;
6733         case NL80211_IFTYPE_STATION:
6734         case NL80211_IFTYPE_P2P_CLIENT:
6735                 /* ignore uAPSD data */
6736                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6737
6738                 /* these are disallowed */
6739                 if (params.sta_flags_mask &
6740                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6741                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6742                         return -EINVAL;
6743                 /* Only TDLS peers can be added */
6744                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6745                         return -EINVAL;
6746                 /* Can only add if TDLS ... */
6747                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6748                         return -EOPNOTSUPP;
6749                 /* ... with external setup is supported */
6750                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6751                         return -EOPNOTSUPP;
6752                 /*
6753                  * Older wpa_supplicant versions always mark the TDLS peer
6754                  * as authorized, but it shouldn't yet be.
6755                  */
6756                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6757                 break;
6758         default:
6759                 return -EOPNOTSUPP;
6760         }
6761
6762         /* be aware of params.vlan when changing code here */
6763
6764         err = rdev_add_station(rdev, dev, mac_addr, &params);
6765
6766         if (params.vlan)
6767                 dev_put(params.vlan);
6768         return err;
6769 }
6770
6771 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6772 {
6773         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6774         struct net_device *dev = info->user_ptr[1];
6775         struct station_del_parameters params;
6776
6777         memset(&params, 0, sizeof(params));
6778
6779         if (info->attrs[NL80211_ATTR_MAC])
6780                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6781
6782         switch (dev->ieee80211_ptr->iftype) {
6783         case NL80211_IFTYPE_AP:
6784         case NL80211_IFTYPE_AP_VLAN:
6785         case NL80211_IFTYPE_MESH_POINT:
6786         case NL80211_IFTYPE_P2P_GO:
6787                 /* always accept these */
6788                 break;
6789         case NL80211_IFTYPE_ADHOC:
6790                 /* conditionally accept */
6791                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6792                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6793                         break;
6794                 return -EINVAL;
6795         default:
6796                 return -EINVAL;
6797         }
6798
6799         if (!rdev->ops->del_station)
6800                 return -EOPNOTSUPP;
6801
6802         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6803                 params.subtype =
6804                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6805                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6806                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6807                         return -EINVAL;
6808         } else {
6809                 /* Default to Deauthentication frame */
6810                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6811         }
6812
6813         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6814                 params.reason_code =
6815                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6816                 if (params.reason_code == 0)
6817                         return -EINVAL; /* 0 is reserved */
6818         } else {
6819                 /* Default to reason code 2 */
6820                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6821         }
6822
6823         return rdev_del_station(rdev, dev, &params);
6824 }
6825
6826 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6827                                 int flags, struct net_device *dev,
6828                                 u8 *dst, u8 *next_hop,
6829                                 struct mpath_info *pinfo)
6830 {
6831         void *hdr;
6832         struct nlattr *pinfoattr;
6833
6834         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6835         if (!hdr)
6836                 return -1;
6837
6838         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6839             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6840             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6841             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6842                 goto nla_put_failure;
6843
6844         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6845         if (!pinfoattr)
6846                 goto nla_put_failure;
6847         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6848             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6849                         pinfo->frame_qlen))
6850                 goto nla_put_failure;
6851         if (((pinfo->filled & MPATH_INFO_SN) &&
6852              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6853             ((pinfo->filled & MPATH_INFO_METRIC) &&
6854              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6855                          pinfo->metric)) ||
6856             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6857              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6858                          pinfo->exptime)) ||
6859             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6860              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6861                         pinfo->flags)) ||
6862             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6863              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6864                          pinfo->discovery_timeout)) ||
6865             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6866              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6867                         pinfo->discovery_retries)) ||
6868             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6869              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6870                         pinfo->hop_count)) ||
6871             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6872              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6873                          pinfo->path_change_count)))
6874                 goto nla_put_failure;
6875
6876         nla_nest_end(msg, pinfoattr);
6877
6878         genlmsg_end(msg, hdr);
6879         return 0;
6880
6881  nla_put_failure:
6882         genlmsg_cancel(msg, hdr);
6883         return -EMSGSIZE;
6884 }
6885
6886 static int nl80211_dump_mpath(struct sk_buff *skb,
6887                               struct netlink_callback *cb)
6888 {
6889         struct mpath_info pinfo;
6890         struct cfg80211_registered_device *rdev;
6891         struct wireless_dev *wdev;
6892         u8 dst[ETH_ALEN];
6893         u8 next_hop[ETH_ALEN];
6894         int path_idx = cb->args[2];
6895         int err;
6896
6897         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6898         if (err)
6899                 return err;
6900         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6901         __acquire(&rdev->wiphy.mtx);
6902
6903         if (!rdev->ops->dump_mpath) {
6904                 err = -EOPNOTSUPP;
6905                 goto out_err;
6906         }
6907
6908         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6909                 err = -EOPNOTSUPP;
6910                 goto out_err;
6911         }
6912
6913         while (1) {
6914                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6915                                       next_hop, &pinfo);
6916                 if (err == -ENOENT)
6917                         break;
6918                 if (err)
6919                         goto out_err;
6920
6921                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6922                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6923                                        wdev->netdev, dst, next_hop,
6924                                        &pinfo) < 0)
6925                         goto out;
6926
6927                 path_idx++;
6928         }
6929
6930  out:
6931         cb->args[2] = path_idx;
6932         err = skb->len;
6933  out_err:
6934         wiphy_unlock(&rdev->wiphy);
6935         return err;
6936 }
6937
6938 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6939 {
6940         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6941         int err;
6942         struct net_device *dev = info->user_ptr[1];
6943         struct mpath_info pinfo;
6944         struct sk_buff *msg;
6945         u8 *dst = NULL;
6946         u8 next_hop[ETH_ALEN];
6947
6948         memset(&pinfo, 0, sizeof(pinfo));
6949
6950         if (!info->attrs[NL80211_ATTR_MAC])
6951                 return -EINVAL;
6952
6953         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6954
6955         if (!rdev->ops->get_mpath)
6956                 return -EOPNOTSUPP;
6957
6958         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6959                 return -EOPNOTSUPP;
6960
6961         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6962         if (err)
6963                 return err;
6964
6965         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6966         if (!msg)
6967                 return -ENOMEM;
6968
6969         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6970                                  dev, dst, next_hop, &pinfo) < 0) {
6971                 nlmsg_free(msg);
6972                 return -ENOBUFS;
6973         }
6974
6975         return genlmsg_reply(msg, info);
6976 }
6977
6978 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6979 {
6980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6981         struct net_device *dev = info->user_ptr[1];
6982         u8 *dst = NULL;
6983         u8 *next_hop = NULL;
6984
6985         if (!info->attrs[NL80211_ATTR_MAC])
6986                 return -EINVAL;
6987
6988         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6989                 return -EINVAL;
6990
6991         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6992         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6993
6994         if (!rdev->ops->change_mpath)
6995                 return -EOPNOTSUPP;
6996
6997         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6998                 return -EOPNOTSUPP;
6999
7000         return rdev_change_mpath(rdev, dev, dst, next_hop);
7001 }
7002
7003 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7004 {
7005         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7006         struct net_device *dev = info->user_ptr[1];
7007         u8 *dst = NULL;
7008         u8 *next_hop = NULL;
7009
7010         if (!info->attrs[NL80211_ATTR_MAC])
7011                 return -EINVAL;
7012
7013         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7014                 return -EINVAL;
7015
7016         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7017         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7018
7019         if (!rdev->ops->add_mpath)
7020                 return -EOPNOTSUPP;
7021
7022         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7023                 return -EOPNOTSUPP;
7024
7025         return rdev_add_mpath(rdev, dev, dst, next_hop);
7026 }
7027
7028 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7029 {
7030         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7031         struct net_device *dev = info->user_ptr[1];
7032         u8 *dst = NULL;
7033
7034         if (info->attrs[NL80211_ATTR_MAC])
7035                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7036
7037         if (!rdev->ops->del_mpath)
7038                 return -EOPNOTSUPP;
7039
7040         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7041                 return -EOPNOTSUPP;
7042
7043         return rdev_del_mpath(rdev, dev, dst);
7044 }
7045
7046 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7047 {
7048         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7049         int err;
7050         struct net_device *dev = info->user_ptr[1];
7051         struct mpath_info pinfo;
7052         struct sk_buff *msg;
7053         u8 *dst = NULL;
7054         u8 mpp[ETH_ALEN];
7055
7056         memset(&pinfo, 0, sizeof(pinfo));
7057
7058         if (!info->attrs[NL80211_ATTR_MAC])
7059                 return -EINVAL;
7060
7061         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7062
7063         if (!rdev->ops->get_mpp)
7064                 return -EOPNOTSUPP;
7065
7066         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7067                 return -EOPNOTSUPP;
7068
7069         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7070         if (err)
7071                 return err;
7072
7073         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7074         if (!msg)
7075                 return -ENOMEM;
7076
7077         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7078                                dev, dst, mpp, &pinfo) < 0) {
7079                 nlmsg_free(msg);
7080                 return -ENOBUFS;
7081         }
7082
7083         return genlmsg_reply(msg, info);
7084 }
7085
7086 static int nl80211_dump_mpp(struct sk_buff *skb,
7087                             struct netlink_callback *cb)
7088 {
7089         struct mpath_info pinfo;
7090         struct cfg80211_registered_device *rdev;
7091         struct wireless_dev *wdev;
7092         u8 dst[ETH_ALEN];
7093         u8 mpp[ETH_ALEN];
7094         int path_idx = cb->args[2];
7095         int err;
7096
7097         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
7098         if (err)
7099                 return err;
7100         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7101         __acquire(&rdev->wiphy.mtx);
7102
7103         if (!rdev->ops->dump_mpp) {
7104                 err = -EOPNOTSUPP;
7105                 goto out_err;
7106         }
7107
7108         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7109                 err = -EOPNOTSUPP;
7110                 goto out_err;
7111         }
7112
7113         while (1) {
7114                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7115                                     mpp, &pinfo);
7116                 if (err == -ENOENT)
7117                         break;
7118                 if (err)
7119                         goto out_err;
7120
7121                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7122                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7123                                        wdev->netdev, dst, mpp,
7124                                        &pinfo) < 0)
7125                         goto out;
7126
7127                 path_idx++;
7128         }
7129
7130  out:
7131         cb->args[2] = path_idx;
7132         err = skb->len;
7133  out_err:
7134         wiphy_unlock(&rdev->wiphy);
7135         return err;
7136 }
7137
7138 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7139 {
7140         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7141         struct net_device *dev = info->user_ptr[1];
7142         struct wireless_dev *wdev = dev->ieee80211_ptr;
7143         struct bss_parameters params;
7144         int err;
7145
7146         memset(&params, 0, sizeof(params));
7147         /* default to not changing parameters */
7148         params.use_cts_prot = -1;
7149         params.use_short_preamble = -1;
7150         params.use_short_slot_time = -1;
7151         params.ap_isolate = -1;
7152         params.ht_opmode = -1;
7153         params.p2p_ctwindow = -1;
7154         params.p2p_opp_ps = -1;
7155
7156         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7157                 params.use_cts_prot =
7158                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7159         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7160                 params.use_short_preamble =
7161                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7162         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7163                 params.use_short_slot_time =
7164                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7165         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7166                 params.basic_rates =
7167                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7168                 params.basic_rates_len =
7169                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7170         }
7171         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7172                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7173         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7174                 params.ht_opmode =
7175                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7176
7177         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7178                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7179                         return -EINVAL;
7180                 params.p2p_ctwindow =
7181                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7182                 if (params.p2p_ctwindow != 0 &&
7183                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7184                         return -EINVAL;
7185         }
7186
7187         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7188                 u8 tmp;
7189
7190                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7191                         return -EINVAL;
7192                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7193                 params.p2p_opp_ps = tmp;
7194                 if (params.p2p_opp_ps &&
7195                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7196                         return -EINVAL;
7197         }
7198
7199         if (!rdev->ops->change_bss)
7200                 return -EOPNOTSUPP;
7201
7202         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7203             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7204                 return -EOPNOTSUPP;
7205
7206         wdev_lock(wdev);
7207         err = rdev_change_bss(rdev, dev, &params);
7208         wdev_unlock(wdev);
7209
7210         return err;
7211 }
7212
7213 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7214 {
7215         char *data = NULL;
7216         bool is_indoor;
7217         enum nl80211_user_reg_hint_type user_reg_hint_type;
7218         u32 owner_nlportid;
7219
7220         /*
7221          * You should only get this when cfg80211 hasn't yet initialized
7222          * completely when built-in to the kernel right between the time
7223          * window between nl80211_init() and regulatory_init(), if that is
7224          * even possible.
7225          */
7226         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7227                 return -EINPROGRESS;
7228
7229         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7230                 user_reg_hint_type =
7231                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7232         else
7233                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7234
7235         switch (user_reg_hint_type) {
7236         case NL80211_USER_REG_HINT_USER:
7237         case NL80211_USER_REG_HINT_CELL_BASE:
7238                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7239                         return -EINVAL;
7240
7241                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7242                 return regulatory_hint_user(data, user_reg_hint_type);
7243         case NL80211_USER_REG_HINT_INDOOR:
7244                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7245                         owner_nlportid = info->snd_portid;
7246                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7247                 } else {
7248                         owner_nlportid = 0;
7249                         is_indoor = true;
7250                 }
7251
7252                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7253         default:
7254                 return -EINVAL;
7255         }
7256 }
7257
7258 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7259 {
7260         return reg_reload_regdb();
7261 }
7262
7263 static int nl80211_get_mesh_config(struct sk_buff *skb,
7264                                    struct genl_info *info)
7265 {
7266         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7267         struct net_device *dev = info->user_ptr[1];
7268         struct wireless_dev *wdev = dev->ieee80211_ptr;
7269         struct mesh_config cur_params;
7270         int err = 0;
7271         void *hdr;
7272         struct nlattr *pinfoattr;
7273         struct sk_buff *msg;
7274
7275         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7276                 return -EOPNOTSUPP;
7277
7278         if (!rdev->ops->get_mesh_config)
7279                 return -EOPNOTSUPP;
7280
7281         wdev_lock(wdev);
7282         /* If not connected, get default parameters */
7283         if (!wdev->mesh_id_len)
7284                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7285         else
7286                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7287         wdev_unlock(wdev);
7288
7289         if (err)
7290                 return err;
7291
7292         /* Draw up a netlink message to send back */
7293         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7294         if (!msg)
7295                 return -ENOMEM;
7296         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7297                              NL80211_CMD_GET_MESH_CONFIG);
7298         if (!hdr)
7299                 goto out;
7300         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7301         if (!pinfoattr)
7302                 goto nla_put_failure;
7303         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7304             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7305                         cur_params.dot11MeshRetryTimeout) ||
7306             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7307                         cur_params.dot11MeshConfirmTimeout) ||
7308             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7309                         cur_params.dot11MeshHoldingTimeout) ||
7310             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7311                         cur_params.dot11MeshMaxPeerLinks) ||
7312             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7313                        cur_params.dot11MeshMaxRetries) ||
7314             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7315                        cur_params.dot11MeshTTL) ||
7316             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7317                        cur_params.element_ttl) ||
7318             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7319                        cur_params.auto_open_plinks) ||
7320             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7321                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7322             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7323                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7324             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7325                         cur_params.path_refresh_time) ||
7326             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7327                         cur_params.min_discovery_timeout) ||
7328             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7329                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7330             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7331                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7332             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7333                         cur_params.dot11MeshHWMPperrMinInterval) ||
7334             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7335                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7336             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7337                        cur_params.dot11MeshHWMPRootMode) ||
7338             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7339                         cur_params.dot11MeshHWMPRannInterval) ||
7340             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7341                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7342             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7343                        cur_params.dot11MeshForwarding) ||
7344             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7345                         cur_params.rssi_threshold) ||
7346             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7347                         cur_params.ht_opmode) ||
7348             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7349                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7350             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7351                         cur_params.dot11MeshHWMProotInterval) ||
7352             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7353                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7354             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7355                         cur_params.power_mode) ||
7356             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7357                         cur_params.dot11MeshAwakeWindowDuration) ||
7358             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7359                         cur_params.plink_timeout) ||
7360             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7361                        cur_params.dot11MeshConnectedToMeshGate) ||
7362             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7363                        cur_params.dot11MeshNolearn) ||
7364             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7365                        cur_params.dot11MeshConnectedToAuthServer))
7366                 goto nla_put_failure;
7367         nla_nest_end(msg, pinfoattr);
7368         genlmsg_end(msg, hdr);
7369         return genlmsg_reply(msg, info);
7370
7371  nla_put_failure:
7372  out:
7373         nlmsg_free(msg);
7374         return -ENOBUFS;
7375 }
7376
7377 static const struct nla_policy
7378 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7379         [NL80211_MESHCONF_RETRY_TIMEOUT] =
7380                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7381         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7382                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7383         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7384                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7385         [NL80211_MESHCONF_MAX_PEER_LINKS] =
7386                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7387         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7388         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7389         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7390         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7391         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7392                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7393         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7394         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7395         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7396         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7397         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7398                 NLA_POLICY_MIN(NLA_U16, 1),
7399         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7400                 NLA_POLICY_MIN(NLA_U16, 1),
7401         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7402                 NLA_POLICY_MIN(NLA_U16, 1),
7403         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7404         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7405                 NLA_POLICY_MIN(NLA_U16, 1),
7406         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7407         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7408         [NL80211_MESHCONF_RSSI_THRESHOLD] =
7409                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7410         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7411         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7412         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7413                 NLA_POLICY_MIN(NLA_U16, 1),
7414         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7415                 NLA_POLICY_MIN(NLA_U16, 1),
7416         [NL80211_MESHCONF_POWER_MODE] =
7417                 NLA_POLICY_RANGE(NLA_U32,
7418                                  NL80211_MESH_POWER_ACTIVE,
7419                                  NL80211_MESH_POWER_MAX),
7420         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7421         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7422         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7423         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7424         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7425 };
7426
7427 static const struct nla_policy
7428         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7429         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7430         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7431         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7432         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7433         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7434         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7435         [NL80211_MESH_SETUP_IE] =
7436                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7437                                        IEEE80211_MAX_DATA_LEN),
7438         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7439 };
7440
7441 static int nl80211_parse_mesh_config(struct genl_info *info,
7442                                      struct mesh_config *cfg,
7443                                      u32 *mask_out)
7444 {
7445         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7446         u32 mask = 0;
7447         u16 ht_opmode;
7448
7449 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
7450 do {                                                                    \
7451         if (tb[attr]) {                                                 \
7452                 cfg->param = fn(tb[attr]);                              \
7453                 mask |= BIT((attr) - 1);                                \
7454         }                                                               \
7455 } while (0)
7456
7457         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7458                 return -EINVAL;
7459         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7460                 return -EINVAL;
7461
7462         /* This makes sure that there aren't more than 32 mesh config
7463          * parameters (otherwise our bitfield scheme would not work.) */
7464         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7465
7466         /* Fill in the params struct */
7467         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7468                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7469         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7470                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
7471                                   nla_get_u16);
7472         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7473                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7474                                   nla_get_u16);
7475         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7476                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7477                                   nla_get_u16);
7478         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7479                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7480         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7481                                   NL80211_MESHCONF_TTL, nla_get_u8);
7482         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7483                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7484         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7485                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7486                                   nla_get_u8);
7487         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7488                                   mask,
7489                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7490                                   nla_get_u32);
7491         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7492                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7493                                   nla_get_u8);
7494         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7495                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7496                                   nla_get_u32);
7497         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7498             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7499                 return -EINVAL;
7500         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7501                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7502                                   nla_get_u16);
7503         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7504                                   mask,
7505                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7506                                   nla_get_u32);
7507         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7508             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7509              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7510                 return -EINVAL;
7511         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7512                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7513                                   nla_get_u16);
7514         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7515                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7516                                   nla_get_u16);
7517         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7518                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7519                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7520                                   nla_get_u16);
7521         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7522                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7523         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7524                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7525                                   nla_get_u16);
7526         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7527                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7528                                   nla_get_u8);
7529         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7530                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7531         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7532                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7533                                   nla_get_s32);
7534         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7535                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7536                                   nla_get_u8);
7537         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7538                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7539                                   nla_get_u8);
7540         /*
7541          * Check HT operation mode based on
7542          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7543          */
7544         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7545                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7546
7547                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7548                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7549                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7550                         return -EINVAL;
7551
7552                 /* NON_HT_STA bit is reserved, but some programs set it */
7553                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7554
7555                 cfg->ht_opmode = ht_opmode;
7556                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7557         }
7558         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7559                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7560                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7561                                   nla_get_u32);
7562         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7563             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7564              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7565                 return -EINVAL;
7566         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7567                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7568                                   nla_get_u16);
7569         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7570                                   mask,
7571                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7572                                   nla_get_u16);
7573         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7574                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7575         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7576                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7577         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7578                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7579         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7580                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7581         if (mask_out)
7582                 *mask_out = mask;
7583
7584         return 0;
7585
7586 #undef FILL_IN_MESH_PARAM_IF_SET
7587 }
7588
7589 static int nl80211_parse_mesh_setup(struct genl_info *info,
7590                                      struct mesh_setup *setup)
7591 {
7592         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7593         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7594
7595         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7596                 return -EINVAL;
7597         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7598                 return -EINVAL;
7599
7600         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7601                 setup->sync_method =
7602                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7603                  IEEE80211_SYNC_METHOD_VENDOR :
7604                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7605
7606         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7607                 setup->path_sel_proto =
7608                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7609                  IEEE80211_PATH_PROTOCOL_VENDOR :
7610                  IEEE80211_PATH_PROTOCOL_HWMP;
7611
7612         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7613                 setup->path_metric =
7614                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7615                  IEEE80211_PATH_METRIC_VENDOR :
7616                  IEEE80211_PATH_METRIC_AIRTIME;
7617
7618         if (tb[NL80211_MESH_SETUP_IE]) {
7619                 struct nlattr *ieattr =
7620                         tb[NL80211_MESH_SETUP_IE];
7621                 setup->ie = nla_data(ieattr);
7622                 setup->ie_len = nla_len(ieattr);
7623         }
7624         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7625             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7626                 return -EINVAL;
7627         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7628         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7629         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7630         if (setup->is_secure)
7631                 setup->user_mpm = true;
7632
7633         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7634                 if (!setup->user_mpm)
7635                         return -EINVAL;
7636                 setup->auth_id =
7637                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7638         }
7639
7640         return 0;
7641 }
7642
7643 static int nl80211_update_mesh_config(struct sk_buff *skb,
7644                                       struct genl_info *info)
7645 {
7646         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7647         struct net_device *dev = info->user_ptr[1];
7648         struct wireless_dev *wdev = dev->ieee80211_ptr;
7649         struct mesh_config cfg;
7650         u32 mask;
7651         int err;
7652
7653         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7654                 return -EOPNOTSUPP;
7655
7656         if (!rdev->ops->update_mesh_config)
7657                 return -EOPNOTSUPP;
7658
7659         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7660         if (err)
7661                 return err;
7662
7663         wdev_lock(wdev);
7664         if (!wdev->mesh_id_len)
7665                 err = -ENOLINK;
7666
7667         if (!err)
7668                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7669
7670         wdev_unlock(wdev);
7671
7672         return err;
7673 }
7674
7675 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7676                               struct sk_buff *msg)
7677 {
7678         struct nlattr *nl_reg_rules;
7679         unsigned int i;
7680
7681         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7682             (regdom->dfs_region &&
7683              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7684                 goto nla_put_failure;
7685
7686         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7687         if (!nl_reg_rules)
7688                 goto nla_put_failure;
7689
7690         for (i = 0; i < regdom->n_reg_rules; i++) {
7691                 struct nlattr *nl_reg_rule;
7692                 const struct ieee80211_reg_rule *reg_rule;
7693                 const struct ieee80211_freq_range *freq_range;
7694                 const struct ieee80211_power_rule *power_rule;
7695                 unsigned int max_bandwidth_khz;
7696
7697                 reg_rule = &regdom->reg_rules[i];
7698                 freq_range = &reg_rule->freq_range;
7699                 power_rule = &reg_rule->power_rule;
7700
7701                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7702                 if (!nl_reg_rule)
7703                         goto nla_put_failure;
7704
7705                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7706                 if (!max_bandwidth_khz)
7707                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7708                                                                   reg_rule);
7709
7710                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7711                                 reg_rule->flags) ||
7712                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7713                                 freq_range->start_freq_khz) ||
7714                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7715                                 freq_range->end_freq_khz) ||
7716                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7717                                 max_bandwidth_khz) ||
7718                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7719                                 power_rule->max_antenna_gain) ||
7720                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7721                                 power_rule->max_eirp) ||
7722                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7723                                 reg_rule->dfs_cac_ms))
7724                         goto nla_put_failure;
7725
7726                 nla_nest_end(msg, nl_reg_rule);
7727         }
7728
7729         nla_nest_end(msg, nl_reg_rules);
7730         return 0;
7731
7732 nla_put_failure:
7733         return -EMSGSIZE;
7734 }
7735
7736 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7737 {
7738         const struct ieee80211_regdomain *regdom = NULL;
7739         struct cfg80211_registered_device *rdev;
7740         struct wiphy *wiphy = NULL;
7741         struct sk_buff *msg;
7742         void *hdr;
7743
7744         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7745         if (!msg)
7746                 return -ENOBUFS;
7747
7748         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7749                              NL80211_CMD_GET_REG);
7750         if (!hdr)
7751                 goto put_failure;
7752
7753         rtnl_lock();
7754
7755         if (info->attrs[NL80211_ATTR_WIPHY]) {
7756                 bool self_managed;
7757
7758                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7759                 if (IS_ERR(rdev)) {
7760                         nlmsg_free(msg);
7761                         rtnl_unlock();
7762                         return PTR_ERR(rdev);
7763                 }
7764
7765                 wiphy = &rdev->wiphy;
7766                 self_managed = wiphy->regulatory_flags &
7767                                REGULATORY_WIPHY_SELF_MANAGED;
7768                 regdom = get_wiphy_regdom(wiphy);
7769
7770                 /* a self-managed-reg device must have a private regdom */
7771                 if (WARN_ON(!regdom && self_managed)) {
7772                         nlmsg_free(msg);
7773                         rtnl_unlock();
7774                         return -EINVAL;
7775                 }
7776
7777                 if (regdom &&
7778                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7779                         goto nla_put_failure;
7780         }
7781
7782         if (!wiphy && reg_last_request_cell_base() &&
7783             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7784                         NL80211_USER_REG_HINT_CELL_BASE))
7785                 goto nla_put_failure;
7786
7787         rcu_read_lock();
7788
7789         if (!regdom)
7790                 regdom = rcu_dereference(cfg80211_regdomain);
7791
7792         if (nl80211_put_regdom(regdom, msg))
7793                 goto nla_put_failure_rcu;
7794
7795         rcu_read_unlock();
7796
7797         genlmsg_end(msg, hdr);
7798         rtnl_unlock();
7799         return genlmsg_reply(msg, info);
7800
7801 nla_put_failure_rcu:
7802         rcu_read_unlock();
7803 nla_put_failure:
7804         rtnl_unlock();
7805 put_failure:
7806         nlmsg_free(msg);
7807         return -EMSGSIZE;
7808 }
7809
7810 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7811                                u32 seq, int flags, struct wiphy *wiphy,
7812                                const struct ieee80211_regdomain *regdom)
7813 {
7814         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7815                                    NL80211_CMD_GET_REG);
7816
7817         if (!hdr)
7818                 return -1;
7819
7820         genl_dump_check_consistent(cb, hdr);
7821
7822         if (nl80211_put_regdom(regdom, msg))
7823                 goto nla_put_failure;
7824
7825         if (!wiphy && reg_last_request_cell_base() &&
7826             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7827                         NL80211_USER_REG_HINT_CELL_BASE))
7828                 goto nla_put_failure;
7829
7830         if (wiphy &&
7831             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7832                 goto nla_put_failure;
7833
7834         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7835             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7836                 goto nla_put_failure;
7837
7838         genlmsg_end(msg, hdr);
7839         return 0;
7840
7841 nla_put_failure:
7842         genlmsg_cancel(msg, hdr);
7843         return -EMSGSIZE;
7844 }
7845
7846 static int nl80211_get_reg_dump(struct sk_buff *skb,
7847                                 struct netlink_callback *cb)
7848 {
7849         const struct ieee80211_regdomain *regdom = NULL;
7850         struct cfg80211_registered_device *rdev;
7851         int err, reg_idx, start = cb->args[2];
7852
7853         rtnl_lock();
7854
7855         if (cfg80211_regdomain && start == 0) {
7856                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7857                                           NLM_F_MULTI, NULL,
7858                                           rtnl_dereference(cfg80211_regdomain));
7859                 if (err < 0)
7860                         goto out_err;
7861         }
7862
7863         /* the global regdom is idx 0 */
7864         reg_idx = 1;
7865         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7866                 regdom = get_wiphy_regdom(&rdev->wiphy);
7867                 if (!regdom)
7868                         continue;
7869
7870                 if (++reg_idx <= start)
7871                         continue;
7872
7873                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7874                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7875                 if (err < 0) {
7876                         reg_idx--;
7877                         break;
7878                 }
7879         }
7880
7881         cb->args[2] = reg_idx;
7882         err = skb->len;
7883 out_err:
7884         rtnl_unlock();
7885         return err;
7886 }
7887
7888 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7889 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7890         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7891         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7892         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7893         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7894         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7895         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7896         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7897 };
7898
7899 static int parse_reg_rule(struct nlattr *tb[],
7900         struct ieee80211_reg_rule *reg_rule)
7901 {
7902         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7903         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7904
7905         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7906                 return -EINVAL;
7907         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7908                 return -EINVAL;
7909         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7910                 return -EINVAL;
7911         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7912                 return -EINVAL;
7913         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7914                 return -EINVAL;
7915
7916         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7917
7918         freq_range->start_freq_khz =
7919                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7920         freq_range->end_freq_khz =
7921                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7922         freq_range->max_bandwidth_khz =
7923                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7924
7925         power_rule->max_eirp =
7926                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7927
7928         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7929                 power_rule->max_antenna_gain =
7930                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7931
7932         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7933                 reg_rule->dfs_cac_ms =
7934                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7935
7936         return 0;
7937 }
7938
7939 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7940 {
7941         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7942         struct nlattr *nl_reg_rule;
7943         char *alpha2;
7944         int rem_reg_rules, r;
7945         u32 num_rules = 0, rule_idx = 0;
7946         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7947         struct ieee80211_regdomain *rd;
7948
7949         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7950                 return -EINVAL;
7951
7952         if (!info->attrs[NL80211_ATTR_REG_RULES])
7953                 return -EINVAL;
7954
7955         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7956
7957         if (info->attrs[NL80211_ATTR_DFS_REGION])
7958                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7959
7960         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7961                             rem_reg_rules) {
7962                 num_rules++;
7963                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7964                         return -EINVAL;
7965         }
7966
7967         rtnl_lock();
7968         if (!reg_is_valid_request(alpha2)) {
7969                 r = -EINVAL;
7970                 goto out;
7971         }
7972
7973         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7974         if (!rd) {
7975                 r = -ENOMEM;
7976                 goto out;
7977         }
7978
7979         rd->n_reg_rules = num_rules;
7980         rd->alpha2[0] = alpha2[0];
7981         rd->alpha2[1] = alpha2[1];
7982
7983         /*
7984          * Disable DFS master mode if the DFS region was
7985          * not supported or known on this kernel.
7986          */
7987         if (reg_supported_dfs_region(dfs_region))
7988                 rd->dfs_region = dfs_region;
7989
7990         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7991                             rem_reg_rules) {
7992                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7993                                                 nl_reg_rule, reg_rule_policy,
7994                                                 info->extack);
7995                 if (r)
7996                         goto bad_reg;
7997                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7998                 if (r)
7999                         goto bad_reg;
8000
8001                 rule_idx++;
8002
8003                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8004                         r = -EINVAL;
8005                         goto bad_reg;
8006                 }
8007         }
8008
8009         r = set_regdom(rd, REGD_SOURCE_CRDA);
8010         /* set_regdom takes ownership of rd */
8011         rd = NULL;
8012  bad_reg:
8013         kfree(rd);
8014  out:
8015         rtnl_unlock();
8016         return r;
8017 }
8018 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8019
8020 static int validate_scan_freqs(struct nlattr *freqs)
8021 {
8022         struct nlattr *attr1, *attr2;
8023         int n_channels = 0, tmp1, tmp2;
8024
8025         nla_for_each_nested(attr1, freqs, tmp1)
8026                 if (nla_len(attr1) != sizeof(u32))
8027                         return 0;
8028
8029         nla_for_each_nested(attr1, freqs, tmp1) {
8030                 n_channels++;
8031                 /*
8032                  * Some hardware has a limited channel list for
8033                  * scanning, and it is pretty much nonsensical
8034                  * to scan for a channel twice, so disallow that
8035                  * and don't require drivers to check that the
8036                  * channel list they get isn't longer than what
8037                  * they can scan, as long as they can scan all
8038                  * the channels they registered at once.
8039                  */
8040                 nla_for_each_nested(attr2, freqs, tmp2)
8041                         if (attr1 != attr2 &&
8042                             nla_get_u32(attr1) == nla_get_u32(attr2))
8043                                 return 0;
8044         }
8045
8046         return n_channels;
8047 }
8048
8049 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8050 {
8051         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8052 }
8053
8054 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8055                             struct cfg80211_bss_selection *bss_select)
8056 {
8057         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8058         struct nlattr *nest;
8059         int err;
8060         bool found = false;
8061         int i;
8062
8063         /* only process one nested attribute */
8064         nest = nla_data(nla);
8065         if (!nla_ok(nest, nla_len(nest)))
8066                 return -EINVAL;
8067
8068         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8069                                           nest, nl80211_bss_select_policy,
8070                                           NULL);
8071         if (err)
8072                 return err;
8073
8074         /* only one attribute may be given */
8075         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8076                 if (attr[i]) {
8077                         if (found)
8078                                 return -EINVAL;
8079                         found = true;
8080                 }
8081         }
8082
8083         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8084
8085         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8086                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8087
8088         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8089                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8090                 bss_select->param.band_pref =
8091                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8092                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8093                         return -EINVAL;
8094         }
8095
8096         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8097                 struct nl80211_bss_select_rssi_adjust *adj_param;
8098
8099                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8100                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8101                 bss_select->param.adjust.band = adj_param->band;
8102                 bss_select->param.adjust.delta = adj_param->delta;
8103                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8104                         return -EINVAL;
8105         }
8106
8107         /* user-space did not provide behaviour attribute */
8108         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8109                 return -EINVAL;
8110
8111         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8112                 return -EINVAL;
8113
8114         return 0;
8115 }
8116
8117 int nl80211_parse_random_mac(struct nlattr **attrs,
8118                              u8 *mac_addr, u8 *mac_addr_mask)
8119 {
8120         int i;
8121
8122         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8123                 eth_zero_addr(mac_addr);
8124                 eth_zero_addr(mac_addr_mask);
8125                 mac_addr[0] = 0x2;
8126                 mac_addr_mask[0] = 0x3;
8127
8128                 return 0;
8129         }
8130
8131         /* need both or none */
8132         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8133                 return -EINVAL;
8134
8135         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8136         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8137
8138         /* don't allow or configure an mcast address */
8139         if (!is_multicast_ether_addr(mac_addr_mask) ||
8140             is_multicast_ether_addr(mac_addr))
8141                 return -EINVAL;
8142
8143         /*
8144          * allow users to pass a MAC address that has bits set outside
8145          * of the mask, but don't bother drivers with having to deal
8146          * with such bits
8147          */
8148         for (i = 0; i < ETH_ALEN; i++)
8149                 mac_addr[i] &= mac_addr_mask[i];
8150
8151         return 0;
8152 }
8153
8154 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
8155 {
8156         ASSERT_WDEV_LOCK(wdev);
8157
8158         if (!cfg80211_beaconing_iface_active(wdev))
8159                 return true;
8160
8161         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
8162                 return true;
8163
8164         return regulatory_pre_cac_allowed(wdev->wiphy);
8165 }
8166
8167 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8168                                     enum nl80211_ext_feature_index feat)
8169 {
8170         if (!(flags & flag))
8171                 return true;
8172         if (wiphy_ext_feature_isset(wiphy, feat))
8173                 return true;
8174         return false;
8175 }
8176
8177 static int
8178 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8179                          void *request, struct nlattr **attrs,
8180                          bool is_sched_scan)
8181 {
8182         u8 *mac_addr, *mac_addr_mask;
8183         u32 *flags;
8184         enum nl80211_feature_flags randomness_flag;
8185
8186         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8187                 return 0;
8188
8189         if (is_sched_scan) {
8190                 struct cfg80211_sched_scan_request *req = request;
8191
8192                 randomness_flag = wdev ?
8193                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8194                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8195                 flags = &req->flags;
8196                 mac_addr = req->mac_addr;
8197                 mac_addr_mask = req->mac_addr_mask;
8198         } else {
8199                 struct cfg80211_scan_request *req = request;
8200
8201                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8202                 flags = &req->flags;
8203                 mac_addr = req->mac_addr;
8204                 mac_addr_mask = req->mac_addr_mask;
8205         }
8206
8207         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8208
8209         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8210              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8211             !nl80211_check_scan_feat(wiphy, *flags,
8212                                      NL80211_SCAN_FLAG_LOW_SPAN,
8213                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8214             !nl80211_check_scan_feat(wiphy, *flags,
8215                                      NL80211_SCAN_FLAG_LOW_POWER,
8216                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8217             !nl80211_check_scan_feat(wiphy, *flags,
8218                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8219                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8220             !nl80211_check_scan_feat(wiphy, *flags,
8221                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8222                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8223             !nl80211_check_scan_feat(wiphy, *flags,
8224                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8225                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8226             !nl80211_check_scan_feat(wiphy, *flags,
8227                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8228                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8229             !nl80211_check_scan_feat(wiphy, *flags,
8230                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8231                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8232             !nl80211_check_scan_feat(wiphy, *flags,
8233                                      NL80211_SCAN_FLAG_RANDOM_SN,
8234                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8235             !nl80211_check_scan_feat(wiphy, *flags,
8236                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8237                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8238                 return -EOPNOTSUPP;
8239
8240         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8241                 int err;
8242
8243                 if (!(wiphy->features & randomness_flag) ||
8244                     (wdev && wdev->current_bss))
8245                         return -EOPNOTSUPP;
8246
8247                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8248                 if (err)
8249                         return err;
8250         }
8251
8252         return 0;
8253 }
8254
8255 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8256 {
8257         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8258         struct wireless_dev *wdev = info->user_ptr[1];
8259         struct cfg80211_scan_request *request;
8260         struct nlattr *scan_freqs = NULL;
8261         bool scan_freqs_khz = false;
8262         struct nlattr *attr;
8263         struct wiphy *wiphy;
8264         int err, tmp, n_ssids = 0, n_channels, i;
8265         size_t ie_len;
8266
8267         wiphy = &rdev->wiphy;
8268
8269         if (wdev->iftype == NL80211_IFTYPE_NAN)
8270                 return -EOPNOTSUPP;
8271
8272         if (!rdev->ops->scan)
8273                 return -EOPNOTSUPP;
8274
8275         if (rdev->scan_req || rdev->scan_msg)
8276                 return -EBUSY;
8277
8278         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8279                 if (!wiphy_ext_feature_isset(wiphy,
8280                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8281                         return -EOPNOTSUPP;
8282                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8283                 scan_freqs_khz = true;
8284         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8285                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8286
8287         if (scan_freqs) {
8288                 n_channels = validate_scan_freqs(scan_freqs);
8289                 if (!n_channels)
8290                         return -EINVAL;
8291         } else {
8292                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8293         }
8294
8295         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8296                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8297                         n_ssids++;
8298
8299         if (n_ssids > wiphy->max_scan_ssids)
8300                 return -EINVAL;
8301
8302         if (info->attrs[NL80211_ATTR_IE])
8303                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8304         else
8305                 ie_len = 0;
8306
8307         if (ie_len > wiphy->max_scan_ie_len)
8308                 return -EINVAL;
8309
8310         request = kzalloc(sizeof(*request)
8311                         + sizeof(*request->ssids) * n_ssids
8312                         + sizeof(*request->channels) * n_channels
8313                         + ie_len, GFP_KERNEL);
8314         if (!request)
8315                 return -ENOMEM;
8316
8317         if (n_ssids)
8318                 request->ssids = (void *)&request->channels[n_channels];
8319         request->n_ssids = n_ssids;
8320         if (ie_len) {
8321                 if (n_ssids)
8322                         request->ie = (void *)(request->ssids + n_ssids);
8323                 else
8324                         request->ie = (void *)(request->channels + n_channels);
8325         }
8326
8327         i = 0;
8328         if (scan_freqs) {
8329                 /* user specified, bail out if channel not found */
8330                 nla_for_each_nested(attr, scan_freqs, tmp) {
8331                         struct ieee80211_channel *chan;
8332                         int freq = nla_get_u32(attr);
8333
8334                         if (!scan_freqs_khz)
8335                                 freq = MHZ_TO_KHZ(freq);
8336
8337                         chan = ieee80211_get_channel_khz(wiphy, freq);
8338                         if (!chan) {
8339                                 err = -EINVAL;
8340                                 goto out_free;
8341                         }
8342
8343                         /* ignore disabled channels */
8344                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8345                                 continue;
8346
8347                         request->channels[i] = chan;
8348                         i++;
8349                 }
8350         } else {
8351                 enum nl80211_band band;
8352
8353                 /* all channels */
8354                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8355                         int j;
8356
8357                         if (!wiphy->bands[band])
8358                                 continue;
8359                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8360                                 struct ieee80211_channel *chan;
8361
8362                                 chan = &wiphy->bands[band]->channels[j];
8363
8364                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8365                                         continue;
8366
8367                                 request->channels[i] = chan;
8368                                 i++;
8369                         }
8370                 }
8371         }
8372
8373         if (!i) {
8374                 err = -EINVAL;
8375                 goto out_free;
8376         }
8377
8378         request->n_channels = i;
8379
8380         wdev_lock(wdev);
8381         if (!cfg80211_off_channel_oper_allowed(wdev)) {
8382                 struct ieee80211_channel *chan;
8383
8384                 if (request->n_channels != 1) {
8385                         wdev_unlock(wdev);
8386                         err = -EBUSY;
8387                         goto out_free;
8388                 }
8389
8390                 chan = request->channels[0];
8391                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8392                         wdev_unlock(wdev);
8393                         err = -EBUSY;
8394                         goto out_free;
8395                 }
8396         }
8397         wdev_unlock(wdev);
8398
8399         i = 0;
8400         if (n_ssids) {
8401                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8402                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8403                                 err = -EINVAL;
8404                                 goto out_free;
8405                         }
8406                         request->ssids[i].ssid_len = nla_len(attr);
8407                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8408                         i++;
8409                 }
8410         }
8411
8412         if (info->attrs[NL80211_ATTR_IE]) {
8413                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8414                 memcpy((void *)request->ie,
8415                        nla_data(info->attrs[NL80211_ATTR_IE]),
8416                        request->ie_len);
8417         }
8418
8419         for (i = 0; i < NUM_NL80211_BANDS; i++)
8420                 if (wiphy->bands[i])
8421                         request->rates[i] =
8422                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
8423
8424         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8425                 nla_for_each_nested(attr,
8426                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8427                                     tmp) {
8428                         enum nl80211_band band = nla_type(attr);
8429
8430                         if (band < 0 || band >= NUM_NL80211_BANDS) {
8431                                 err = -EINVAL;
8432                                 goto out_free;
8433                         }
8434
8435                         if (!wiphy->bands[band])
8436                                 continue;
8437
8438                         err = ieee80211_get_ratemask(wiphy->bands[band],
8439                                                      nla_data(attr),
8440                                                      nla_len(attr),
8441                                                      &request->rates[band]);
8442                         if (err)
8443                                 goto out_free;
8444                 }
8445         }
8446
8447         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8448                 request->duration =
8449                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8450                 request->duration_mandatory =
8451                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8452         }
8453
8454         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8455                                        false);
8456         if (err)
8457                 goto out_free;
8458
8459         request->no_cck =
8460                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8461
8462         /* Initial implementation used NL80211_ATTR_MAC to set the specific
8463          * BSSID to scan for. This was problematic because that same attribute
8464          * was already used for another purpose (local random MAC address). The
8465          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8466          * compatibility with older userspace components, also use the
8467          * NL80211_ATTR_MAC value here if it can be determined to be used for
8468          * the specific BSSID use case instead of the random MAC address
8469          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8470          */
8471         if (info->attrs[NL80211_ATTR_BSSID])
8472                 memcpy(request->bssid,
8473                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8474         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8475                  info->attrs[NL80211_ATTR_MAC])
8476                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8477                        ETH_ALEN);
8478         else
8479                 eth_broadcast_addr(request->bssid);
8480
8481         request->wdev = wdev;
8482         request->wiphy = &rdev->wiphy;
8483         request->scan_start = jiffies;
8484
8485         rdev->scan_req = request;
8486         err = cfg80211_scan(rdev);
8487
8488         if (err)
8489                 goto out_free;
8490
8491         nl80211_send_scan_start(rdev, wdev);
8492         if (wdev->netdev)
8493                 dev_hold(wdev->netdev);
8494
8495         return 0;
8496
8497  out_free:
8498         rdev->scan_req = NULL;
8499         kfree(request);
8500
8501         return err;
8502 }
8503
8504 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8505 {
8506         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8507         struct wireless_dev *wdev = info->user_ptr[1];
8508
8509         if (!rdev->ops->abort_scan)
8510                 return -EOPNOTSUPP;
8511
8512         if (rdev->scan_msg)
8513                 return 0;
8514
8515         if (!rdev->scan_req)
8516                 return -ENOENT;
8517
8518         rdev_abort_scan(rdev, wdev);
8519         return 0;
8520 }
8521
8522 static int
8523 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8524                                struct cfg80211_sched_scan_request *request,
8525                                struct nlattr **attrs)
8526 {
8527         int tmp, err, i = 0;
8528         struct nlattr *attr;
8529
8530         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8531                 u32 interval;
8532
8533                 /*
8534                  * If scan plans are not specified,
8535                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8536                  * case one scan plan will be set with the specified scan
8537                  * interval and infinite number of iterations.
8538                  */
8539                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8540                 if (!interval)
8541                         return -EINVAL;
8542
8543                 request->scan_plans[0].interval =
8544                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8545                 if (!request->scan_plans[0].interval)
8546                         return -EINVAL;
8547
8548                 if (request->scan_plans[0].interval >
8549                     wiphy->max_sched_scan_plan_interval)
8550                         request->scan_plans[0].interval =
8551                                 wiphy->max_sched_scan_plan_interval;
8552
8553                 return 0;
8554         }
8555
8556         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8557                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8558
8559                 if (WARN_ON(i >= n_plans))
8560                         return -EINVAL;
8561
8562                 err = nla_parse_nested_deprecated(plan,
8563                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8564                                                   attr, nl80211_plan_policy,
8565                                                   NULL);
8566                 if (err)
8567                         return err;
8568
8569                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8570                         return -EINVAL;
8571
8572                 request->scan_plans[i].interval =
8573                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8574                 if (!request->scan_plans[i].interval ||
8575                     request->scan_plans[i].interval >
8576                     wiphy->max_sched_scan_plan_interval)
8577                         return -EINVAL;
8578
8579                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8580                         request->scan_plans[i].iterations =
8581                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8582                         if (!request->scan_plans[i].iterations ||
8583                             (request->scan_plans[i].iterations >
8584                              wiphy->max_sched_scan_plan_iterations))
8585                                 return -EINVAL;
8586                 } else if (i < n_plans - 1) {
8587                         /*
8588                          * All scan plans but the last one must specify
8589                          * a finite number of iterations
8590                          */
8591                         return -EINVAL;
8592                 }
8593
8594                 i++;
8595         }
8596
8597         /*
8598          * The last scan plan must not specify the number of
8599          * iterations, it is supposed to run infinitely
8600          */
8601         if (request->scan_plans[n_plans - 1].iterations)
8602                 return  -EINVAL;
8603
8604         return 0;
8605 }
8606
8607 static int
8608 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8609                                        struct cfg80211_match_set *match_sets,
8610                                        struct nlattr *tb_band_rssi,
8611                                        s32 rssi_thold)
8612 {
8613         struct nlattr *attr;
8614         int i, tmp, ret = 0;
8615
8616         if (!wiphy_ext_feature_isset(wiphy,
8617                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8618                 if (tb_band_rssi)
8619                         ret = -EOPNOTSUPP;
8620                 else
8621                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8622                                 match_sets->per_band_rssi_thold[i] =
8623                                         NL80211_SCAN_RSSI_THOLD_OFF;
8624                 return ret;
8625         }
8626
8627         for (i = 0; i < NUM_NL80211_BANDS; i++)
8628                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8629
8630         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8631                 enum nl80211_band band = nla_type(attr);
8632
8633                 if (band < 0 || band >= NUM_NL80211_BANDS)
8634                         return -EINVAL;
8635
8636                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8637         }
8638
8639         return 0;
8640 }
8641
8642 static struct cfg80211_sched_scan_request *
8643 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8644                          struct nlattr **attrs, int max_match_sets)
8645 {
8646         struct cfg80211_sched_scan_request *request;
8647         struct nlattr *attr;
8648         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8649         enum nl80211_band band;
8650         size_t ie_len;
8651         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8652         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8653
8654         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8655                 n_channels = validate_scan_freqs(
8656                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8657                 if (!n_channels)
8658                         return ERR_PTR(-EINVAL);
8659         } else {
8660                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8661         }
8662
8663         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8664                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8665                                     tmp)
8666                         n_ssids++;
8667
8668         if (n_ssids > wiphy->max_sched_scan_ssids)
8669                 return ERR_PTR(-EINVAL);
8670
8671         /*
8672          * First, count the number of 'real' matchsets. Due to an issue with
8673          * the old implementation, matchsets containing only the RSSI attribute
8674          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8675          * RSSI for all matchsets, rather than their own matchset for reporting
8676          * all APs with a strong RSSI. This is needed to be compatible with
8677          * older userspace that treated a matchset with only the RSSI as the
8678          * global RSSI for all other matchsets - if there are other matchsets.
8679          */
8680         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8681                 nla_for_each_nested(attr,
8682                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8683                                     tmp) {
8684                         struct nlattr *rssi;
8685
8686                         err = nla_parse_nested_deprecated(tb,
8687                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8688                                                           attr,
8689                                                           nl80211_match_policy,
8690                                                           NULL);
8691                         if (err)
8692                                 return ERR_PTR(err);
8693
8694                         /* SSID and BSSID are mutually exclusive */
8695                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8696                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8697                                 return ERR_PTR(-EINVAL);
8698
8699                         /* add other standalone attributes here */
8700                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8701                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8702                                 n_match_sets++;
8703                                 continue;
8704                         }
8705                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8706                         if (rssi)
8707                                 default_match_rssi = nla_get_s32(rssi);
8708                 }
8709         }
8710
8711         /* However, if there's no other matchset, add the RSSI one */
8712         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8713                 n_match_sets = 1;
8714
8715         if (n_match_sets > max_match_sets)
8716                 return ERR_PTR(-EINVAL);
8717
8718         if (attrs[NL80211_ATTR_IE])
8719                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8720         else
8721                 ie_len = 0;
8722
8723         if (ie_len > wiphy->max_sched_scan_ie_len)
8724                 return ERR_PTR(-EINVAL);
8725
8726         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8727                 /*
8728                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8729                  * each scan plan already specifies its own interval
8730                  */
8731                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8732                         return ERR_PTR(-EINVAL);
8733
8734                 nla_for_each_nested(attr,
8735                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8736                         n_plans++;
8737         } else {
8738                 /*
8739                  * The scan interval attribute is kept for backward
8740                  * compatibility. If no scan plans are specified and sched scan
8741                  * interval is specified, one scan plan will be set with this
8742                  * scan interval and infinite number of iterations.
8743                  */
8744                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8745                         return ERR_PTR(-EINVAL);
8746
8747                 n_plans = 1;
8748         }
8749
8750         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8751                 return ERR_PTR(-EINVAL);
8752
8753         if (!wiphy_ext_feature_isset(
8754                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8755             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8756              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8757                 return ERR_PTR(-EINVAL);
8758
8759         request = kzalloc(sizeof(*request)
8760                         + sizeof(*request->ssids) * n_ssids
8761                         + sizeof(*request->match_sets) * n_match_sets
8762                         + sizeof(*request->scan_plans) * n_plans
8763                         + sizeof(*request->channels) * n_channels
8764                         + ie_len, GFP_KERNEL);
8765         if (!request)
8766                 return ERR_PTR(-ENOMEM);
8767
8768         if (n_ssids)
8769                 request->ssids = (void *)&request->channels[n_channels];
8770         request->n_ssids = n_ssids;
8771         if (ie_len) {
8772                 if (n_ssids)
8773                         request->ie = (void *)(request->ssids + n_ssids);
8774                 else
8775                         request->ie = (void *)(request->channels + n_channels);
8776         }
8777
8778         if (n_match_sets) {
8779                 if (request->ie)
8780                         request->match_sets = (void *)(request->ie + ie_len);
8781                 else if (n_ssids)
8782                         request->match_sets =
8783                                 (void *)(request->ssids + n_ssids);
8784                 else
8785                         request->match_sets =
8786                                 (void *)(request->channels + n_channels);
8787         }
8788         request->n_match_sets = n_match_sets;
8789
8790         if (n_match_sets)
8791                 request->scan_plans = (void *)(request->match_sets +
8792                                                n_match_sets);
8793         else if (request->ie)
8794                 request->scan_plans = (void *)(request->ie + ie_len);
8795         else if (n_ssids)
8796                 request->scan_plans = (void *)(request->ssids + n_ssids);
8797         else
8798                 request->scan_plans = (void *)(request->channels + n_channels);
8799
8800         request->n_scan_plans = n_plans;
8801
8802         i = 0;
8803         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8804                 /* user specified, bail out if channel not found */
8805                 nla_for_each_nested(attr,
8806                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8807                                     tmp) {
8808                         struct ieee80211_channel *chan;
8809
8810                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8811
8812                         if (!chan) {
8813                                 err = -EINVAL;
8814                                 goto out_free;
8815                         }
8816
8817                         /* ignore disabled channels */
8818                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8819                                 continue;
8820
8821                         request->channels[i] = chan;
8822                         i++;
8823                 }
8824         } else {
8825                 /* all channels */
8826                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8827                         int j;
8828
8829                         if (!wiphy->bands[band])
8830                                 continue;
8831                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8832                                 struct ieee80211_channel *chan;
8833
8834                                 chan = &wiphy->bands[band]->channels[j];
8835
8836                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8837                                         continue;
8838
8839                                 request->channels[i] = chan;
8840                                 i++;
8841                         }
8842                 }
8843         }
8844
8845         if (!i) {
8846                 err = -EINVAL;
8847                 goto out_free;
8848         }
8849
8850         request->n_channels = i;
8851
8852         i = 0;
8853         if (n_ssids) {
8854                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8855                                     tmp) {
8856                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8857                                 err = -EINVAL;
8858                                 goto out_free;
8859                         }
8860                         request->ssids[i].ssid_len = nla_len(attr);
8861                         memcpy(request->ssids[i].ssid, nla_data(attr),
8862                                nla_len(attr));
8863                         i++;
8864                 }
8865         }
8866
8867         i = 0;
8868         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8869                 nla_for_each_nested(attr,
8870                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8871                                     tmp) {
8872                         struct nlattr *ssid, *bssid, *rssi;
8873
8874                         err = nla_parse_nested_deprecated(tb,
8875                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8876                                                           attr,
8877                                                           nl80211_match_policy,
8878                                                           NULL);
8879                         if (err)
8880                                 goto out_free;
8881                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8882                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8883
8884                         if (!ssid && !bssid) {
8885                                 i++;
8886                                 continue;
8887                         }
8888
8889                         if (WARN_ON(i >= n_match_sets)) {
8890                                 /* this indicates a programming error,
8891                                  * the loop above should have verified
8892                                  * things properly
8893                                  */
8894                                 err = -EINVAL;
8895                                 goto out_free;
8896                         }
8897
8898                         if (ssid) {
8899                                 memcpy(request->match_sets[i].ssid.ssid,
8900                                        nla_data(ssid), nla_len(ssid));
8901                                 request->match_sets[i].ssid.ssid_len =
8902                                         nla_len(ssid);
8903                         }
8904                         if (bssid)
8905                                 memcpy(request->match_sets[i].bssid,
8906                                        nla_data(bssid), ETH_ALEN);
8907
8908                         /* special attribute - old implementation w/a */
8909                         request->match_sets[i].rssi_thold = default_match_rssi;
8910                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8911                         if (rssi)
8912                                 request->match_sets[i].rssi_thold =
8913                                         nla_get_s32(rssi);
8914
8915                         /* Parse per band RSSI attribute */
8916                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8917                                 &request->match_sets[i],
8918                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8919                                 request->match_sets[i].rssi_thold);
8920                         if (err)
8921                                 goto out_free;
8922
8923                         i++;
8924                 }
8925
8926                 /* there was no other matchset, so the RSSI one is alone */
8927                 if (i == 0 && n_match_sets)
8928                         request->match_sets[0].rssi_thold = default_match_rssi;
8929
8930                 request->min_rssi_thold = INT_MAX;
8931                 for (i = 0; i < n_match_sets; i++)
8932                         request->min_rssi_thold =
8933                                 min(request->match_sets[i].rssi_thold,
8934                                     request->min_rssi_thold);
8935         } else {
8936                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8937         }
8938
8939         if (ie_len) {
8940                 request->ie_len = ie_len;
8941                 memcpy((void *)request->ie,
8942                        nla_data(attrs[NL80211_ATTR_IE]),
8943                        request->ie_len);
8944         }
8945
8946         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8947         if (err)
8948                 goto out_free;
8949
8950         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8951                 request->delay =
8952                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8953
8954         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8955                 request->relative_rssi = nla_get_s8(
8956                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8957                 request->relative_rssi_set = true;
8958         }
8959
8960         if (request->relative_rssi_set &&
8961             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8962                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8963
8964                 rssi_adjust = nla_data(
8965                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8966                 request->rssi_adjust.band = rssi_adjust->band;
8967                 request->rssi_adjust.delta = rssi_adjust->delta;
8968                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8969                         err = -EINVAL;
8970                         goto out_free;
8971                 }
8972         }
8973
8974         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8975         if (err)
8976                 goto out_free;
8977
8978         request->scan_start = jiffies;
8979
8980         return request;
8981
8982 out_free:
8983         kfree(request);
8984         return ERR_PTR(err);
8985 }
8986
8987 static int nl80211_start_sched_scan(struct sk_buff *skb,
8988                                     struct genl_info *info)
8989 {
8990         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8991         struct net_device *dev = info->user_ptr[1];
8992         struct wireless_dev *wdev = dev->ieee80211_ptr;
8993         struct cfg80211_sched_scan_request *sched_scan_req;
8994         bool want_multi;
8995         int err;
8996
8997         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8998                 return -EOPNOTSUPP;
8999
9000         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
9001         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
9002         if (err)
9003                 return err;
9004
9005         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9006                                                   info->attrs,
9007                                                   rdev->wiphy.max_match_sets);
9008
9009         err = PTR_ERR_OR_ZERO(sched_scan_req);
9010         if (err)
9011                 goto out_err;
9012
9013         /* leave request id zero for legacy request
9014          * or if driver does not support multi-scheduled scan
9015          */
9016         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9017                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9018
9019         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9020         if (err)
9021                 goto out_free;
9022
9023         sched_scan_req->dev = dev;
9024         sched_scan_req->wiphy = &rdev->wiphy;
9025
9026         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9027                 sched_scan_req->owner_nlportid = info->snd_portid;
9028
9029         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9030
9031         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9032         return 0;
9033
9034 out_free:
9035         kfree(sched_scan_req);
9036 out_err:
9037         return err;
9038 }
9039
9040 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9041                                    struct genl_info *info)
9042 {
9043         struct cfg80211_sched_scan_request *req;
9044         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9045         u64 cookie;
9046
9047         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9048                 return -EOPNOTSUPP;
9049
9050         if (info->attrs[NL80211_ATTR_COOKIE]) {
9051                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9052                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9053         }
9054
9055         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9056                                      struct cfg80211_sched_scan_request,
9057                                      list);
9058         if (!req || req->reqid ||
9059             (req->owner_nlportid &&
9060              req->owner_nlportid != info->snd_portid))
9061                 return -ENOENT;
9062
9063         return cfg80211_stop_sched_scan_req(rdev, req, false);
9064 }
9065
9066 static int nl80211_start_radar_detection(struct sk_buff *skb,
9067                                          struct genl_info *info)
9068 {
9069         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9070         struct net_device *dev = info->user_ptr[1];
9071         struct wireless_dev *wdev = dev->ieee80211_ptr;
9072         struct wiphy *wiphy = wdev->wiphy;
9073         struct cfg80211_chan_def chandef;
9074         enum nl80211_dfs_regions dfs_region;
9075         unsigned int cac_time_ms;
9076         int err;
9077
9078         dfs_region = reg_get_dfs_region(wiphy);
9079         if (dfs_region == NL80211_DFS_UNSET)
9080                 return -EINVAL;
9081
9082         err = nl80211_parse_chandef(rdev, info, &chandef);
9083         if (err)
9084                 return err;
9085
9086         if (netif_carrier_ok(dev))
9087                 return -EBUSY;
9088
9089         if (wdev->cac_started)
9090                 return -EBUSY;
9091
9092         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9093         if (err < 0)
9094                 return err;
9095
9096         if (err == 0)
9097                 return -EINVAL;
9098
9099         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
9100                 return -EINVAL;
9101
9102         /* CAC start is offloaded to HW and can't be started manually */
9103         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
9104                 return -EOPNOTSUPP;
9105
9106         if (!rdev->ops->start_radar_detection)
9107                 return -EOPNOTSUPP;
9108
9109         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9110         if (WARN_ON(!cac_time_ms))
9111                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9112
9113         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9114         if (!err) {
9115                 wdev->chandef = chandef;
9116                 wdev->cac_started = true;
9117                 wdev->cac_start_time = jiffies;
9118                 wdev->cac_time_ms = cac_time_ms;
9119         }
9120         return err;
9121 }
9122
9123 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9124                                           struct genl_info *info)
9125 {
9126         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9127         struct net_device *dev = info->user_ptr[1];
9128         struct wireless_dev *wdev = dev->ieee80211_ptr;
9129         struct wiphy *wiphy = wdev->wiphy;
9130         struct cfg80211_chan_def chandef;
9131         enum nl80211_dfs_regions dfs_region;
9132         int err;
9133
9134         dfs_region = reg_get_dfs_region(wiphy);
9135         if (dfs_region == NL80211_DFS_UNSET) {
9136                 GENL_SET_ERR_MSG(info,
9137                                  "DFS Region is not set. Unexpected Radar indication");
9138                 return -EINVAL;
9139         }
9140
9141         err = nl80211_parse_chandef(rdev, info, &chandef);
9142         if (err) {
9143                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9144                 return err;
9145         }
9146
9147         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9148         if (err < 0) {
9149                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9150                 return err;
9151         }
9152
9153         if (err == 0) {
9154                 GENL_SET_ERR_MSG(info,
9155                                  "Unexpected Radar indication for chandef/iftype");
9156                 return -EINVAL;
9157         }
9158
9159         /* Do not process this notification if radar is already detected
9160          * by kernel on this channel, and return success.
9161          */
9162         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9163                 return 0;
9164
9165         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9166
9167         cfg80211_sched_dfs_chan_update(rdev);
9168
9169         rdev->radar_chandef = chandef;
9170
9171         /* Propagate this notification to other radios as well */
9172         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9173
9174         return 0;
9175 }
9176
9177 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9178 {
9179         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9180         struct net_device *dev = info->user_ptr[1];
9181         struct wireless_dev *wdev = dev->ieee80211_ptr;
9182         struct cfg80211_csa_settings params;
9183         struct nlattr **csa_attrs = NULL;
9184         int err;
9185         bool need_new_beacon = false;
9186         bool need_handle_dfs_flag = true;
9187         int len, i;
9188         u32 cs_count;
9189
9190         if (!rdev->ops->channel_switch ||
9191             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9192                 return -EOPNOTSUPP;
9193
9194         switch (dev->ieee80211_ptr->iftype) {
9195         case NL80211_IFTYPE_AP:
9196         case NL80211_IFTYPE_P2P_GO:
9197                 need_new_beacon = true;
9198                 /* For all modes except AP the handle_dfs flag needs to be
9199                  * supplied to tell the kernel that userspace will handle radar
9200                  * events when they happen. Otherwise a switch to a channel
9201                  * requiring DFS will be rejected.
9202                  */
9203                 need_handle_dfs_flag = false;
9204
9205                 /* useless if AP is not running */
9206                 if (!wdev->beacon_interval)
9207                         return -ENOTCONN;
9208                 break;
9209         case NL80211_IFTYPE_ADHOC:
9210                 if (!wdev->ssid_len)
9211                         return -ENOTCONN;
9212                 break;
9213         case NL80211_IFTYPE_MESH_POINT:
9214                 if (!wdev->mesh_id_len)
9215                         return -ENOTCONN;
9216                 break;
9217         default:
9218                 return -EOPNOTSUPP;
9219         }
9220
9221         memset(&params, 0, sizeof(params));
9222         params.beacon_csa.ftm_responder = -1;
9223
9224         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9225             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9226                 return -EINVAL;
9227
9228         /* only important for AP, IBSS and mesh create IEs internally */
9229         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9230                 return -EINVAL;
9231
9232         /* Even though the attribute is u32, the specification says
9233          * u8, so let's make sure we don't overflow.
9234          */
9235         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9236         if (cs_count > 255)
9237                 return -EINVAL;
9238
9239         params.count = cs_count;
9240
9241         if (!need_new_beacon)
9242                 goto skip_beacons;
9243
9244         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9245         if (err)
9246                 return err;
9247
9248         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9249                             GFP_KERNEL);
9250         if (!csa_attrs)
9251                 return -ENOMEM;
9252
9253         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9254                                           info->attrs[NL80211_ATTR_CSA_IES],
9255                                           nl80211_policy, info->extack);
9256         if (err)
9257                 goto free;
9258
9259         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9260         if (err)
9261                 goto free;
9262
9263         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9264                 err = -EINVAL;
9265                 goto free;
9266         }
9267
9268         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9269         if (!len || (len % sizeof(u16))) {
9270                 err = -EINVAL;
9271                 goto free;
9272         }
9273
9274         params.n_counter_offsets_beacon = len / sizeof(u16);
9275         if (rdev->wiphy.max_num_csa_counters &&
9276             (params.n_counter_offsets_beacon >
9277              rdev->wiphy.max_num_csa_counters)) {
9278                 err = -EINVAL;
9279                 goto free;
9280         }
9281
9282         params.counter_offsets_beacon =
9283                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9284
9285         /* sanity checks - counters should fit and be the same */
9286         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9287                 u16 offset = params.counter_offsets_beacon[i];
9288
9289                 if (offset >= params.beacon_csa.tail_len) {
9290                         err = -EINVAL;
9291                         goto free;
9292                 }
9293
9294                 if (params.beacon_csa.tail[offset] != params.count) {
9295                         err = -EINVAL;
9296                         goto free;
9297                 }
9298         }
9299
9300         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9301                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9302                 if (!len || (len % sizeof(u16))) {
9303                         err = -EINVAL;
9304                         goto free;
9305                 }
9306
9307                 params.n_counter_offsets_presp = len / sizeof(u16);
9308                 if (rdev->wiphy.max_num_csa_counters &&
9309                     (params.n_counter_offsets_presp >
9310                      rdev->wiphy.max_num_csa_counters)) {
9311                         err = -EINVAL;
9312                         goto free;
9313                 }
9314
9315                 params.counter_offsets_presp =
9316                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9317
9318                 /* sanity checks - counters should fit and be the same */
9319                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9320                         u16 offset = params.counter_offsets_presp[i];
9321
9322                         if (offset >= params.beacon_csa.probe_resp_len) {
9323                                 err = -EINVAL;
9324                                 goto free;
9325                         }
9326
9327                         if (params.beacon_csa.probe_resp[offset] !=
9328                             params.count) {
9329                                 err = -EINVAL;
9330                                 goto free;
9331                         }
9332                 }
9333         }
9334
9335 skip_beacons:
9336         err = nl80211_parse_chandef(rdev, info, &params.chandef);
9337         if (err)
9338                 goto free;
9339
9340         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9341                                            wdev->iftype)) {
9342                 err = -EINVAL;
9343                 goto free;
9344         }
9345
9346         err = cfg80211_chandef_dfs_required(wdev->wiphy,
9347                                             &params.chandef,
9348                                             wdev->iftype);
9349         if (err < 0)
9350                 goto free;
9351
9352         if (err > 0) {
9353                 params.radar_required = true;
9354                 if (need_handle_dfs_flag &&
9355                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9356                         err = -EINVAL;
9357                         goto free;
9358                 }
9359         }
9360
9361         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9362                 params.block_tx = true;
9363
9364         wdev_lock(wdev);
9365         err = rdev_channel_switch(rdev, dev, &params);
9366         wdev_unlock(wdev);
9367
9368 free:
9369         kfree(csa_attrs);
9370         return err;
9371 }
9372
9373 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9374                             u32 seq, int flags,
9375                             struct cfg80211_registered_device *rdev,
9376                             struct wireless_dev *wdev,
9377                             struct cfg80211_internal_bss *intbss)
9378 {
9379         struct cfg80211_bss *res = &intbss->pub;
9380         const struct cfg80211_bss_ies *ies;
9381         void *hdr;
9382         struct nlattr *bss;
9383
9384         ASSERT_WDEV_LOCK(wdev);
9385
9386         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9387                              NL80211_CMD_NEW_SCAN_RESULTS);
9388         if (!hdr)
9389                 return -1;
9390
9391         genl_dump_check_consistent(cb, hdr);
9392
9393         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9394                 goto nla_put_failure;
9395         if (wdev->netdev &&
9396             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9397                 goto nla_put_failure;
9398         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9399                               NL80211_ATTR_PAD))
9400                 goto nla_put_failure;
9401
9402         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9403         if (!bss)
9404                 goto nla_put_failure;
9405         if ((!is_zero_ether_addr(res->bssid) &&
9406              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9407                 goto nla_put_failure;
9408
9409         rcu_read_lock();
9410         /* indicate whether we have probe response data or not */
9411         if (rcu_access_pointer(res->proberesp_ies) &&
9412             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9413                 goto fail_unlock_rcu;
9414
9415         /* this pointer prefers to be pointed to probe response data
9416          * but is always valid
9417          */
9418         ies = rcu_dereference(res->ies);
9419         if (ies) {
9420                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9421                                       NL80211_BSS_PAD))
9422                         goto fail_unlock_rcu;
9423                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9424                                         ies->len, ies->data))
9425                         goto fail_unlock_rcu;
9426         }
9427
9428         /* and this pointer is always (unless driver didn't know) beacon data */
9429         ies = rcu_dereference(res->beacon_ies);
9430         if (ies && ies->from_beacon) {
9431                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9432                                       NL80211_BSS_PAD))
9433                         goto fail_unlock_rcu;
9434                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9435                                         ies->len, ies->data))
9436                         goto fail_unlock_rcu;
9437         }
9438         rcu_read_unlock();
9439
9440         if (res->beacon_interval &&
9441             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9442                 goto nla_put_failure;
9443         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9444             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9445             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9446                         res->channel->freq_offset) ||
9447             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9448             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9449                         jiffies_to_msecs(jiffies - intbss->ts)))
9450                 goto nla_put_failure;
9451
9452         if (intbss->parent_tsf &&
9453             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9454                                intbss->parent_tsf, NL80211_BSS_PAD) ||
9455              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9456                      intbss->parent_bssid)))
9457                 goto nla_put_failure;
9458
9459         if (intbss->ts_boottime &&
9460             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9461                               intbss->ts_boottime, NL80211_BSS_PAD))
9462                 goto nla_put_failure;
9463
9464         if (!nl80211_put_signal(msg, intbss->pub.chains,
9465                                 intbss->pub.chain_signal,
9466                                 NL80211_BSS_CHAIN_SIGNAL))
9467                 goto nla_put_failure;
9468
9469         switch (rdev->wiphy.signal_type) {
9470         case CFG80211_SIGNAL_TYPE_MBM:
9471                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9472                         goto nla_put_failure;
9473                 break;
9474         case CFG80211_SIGNAL_TYPE_UNSPEC:
9475                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9476                         goto nla_put_failure;
9477                 break;
9478         default:
9479                 break;
9480         }
9481
9482         switch (wdev->iftype) {
9483         case NL80211_IFTYPE_P2P_CLIENT:
9484         case NL80211_IFTYPE_STATION:
9485                 if (intbss == wdev->current_bss &&
9486                     nla_put_u32(msg, NL80211_BSS_STATUS,
9487                                 NL80211_BSS_STATUS_ASSOCIATED))
9488                         goto nla_put_failure;
9489                 break;
9490         case NL80211_IFTYPE_ADHOC:
9491                 if (intbss == wdev->current_bss &&
9492                     nla_put_u32(msg, NL80211_BSS_STATUS,
9493                                 NL80211_BSS_STATUS_IBSS_JOINED))
9494                         goto nla_put_failure;
9495                 break;
9496         default:
9497                 break;
9498         }
9499
9500         nla_nest_end(msg, bss);
9501
9502         genlmsg_end(msg, hdr);
9503         return 0;
9504
9505  fail_unlock_rcu:
9506         rcu_read_unlock();
9507  nla_put_failure:
9508         genlmsg_cancel(msg, hdr);
9509         return -EMSGSIZE;
9510 }
9511
9512 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9513 {
9514         struct cfg80211_registered_device *rdev;
9515         struct cfg80211_internal_bss *scan;
9516         struct wireless_dev *wdev;
9517         int start = cb->args[2], idx = 0;
9518         int err;
9519
9520         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9521         if (err)
9522                 return err;
9523         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9524         __acquire(&rdev->wiphy.mtx);
9525
9526         wdev_lock(wdev);
9527         spin_lock_bh(&rdev->bss_lock);
9528
9529         /*
9530          * dump_scan will be called multiple times to break up the scan results
9531          * into multiple messages.  It is unlikely that any more bss-es will be
9532          * expired after the first call, so only call only call this on the
9533          * first dump_scan invocation.
9534          */
9535         if (start == 0)
9536                 cfg80211_bss_expire(rdev);
9537
9538         cb->seq = rdev->bss_generation;
9539
9540         list_for_each_entry(scan, &rdev->bss_list, list) {
9541                 if (++idx <= start)
9542                         continue;
9543                 if (nl80211_send_bss(skb, cb,
9544                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9545                                 rdev, wdev, scan) < 0) {
9546                         idx--;
9547                         break;
9548                 }
9549         }
9550
9551         spin_unlock_bh(&rdev->bss_lock);
9552         wdev_unlock(wdev);
9553
9554         cb->args[2] = idx;
9555         wiphy_unlock(&rdev->wiphy);
9556
9557         return skb->len;
9558 }
9559
9560 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9561                                int flags, struct net_device *dev,
9562                                bool allow_radio_stats,
9563                                struct survey_info *survey)
9564 {
9565         void *hdr;
9566         struct nlattr *infoattr;
9567
9568         /* skip radio stats if userspace didn't request them */
9569         if (!survey->channel && !allow_radio_stats)
9570                 return 0;
9571
9572         hdr = nl80211hdr_put(msg, portid, seq, flags,
9573                              NL80211_CMD_NEW_SURVEY_RESULTS);
9574         if (!hdr)
9575                 return -ENOMEM;
9576
9577         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9578                 goto nla_put_failure;
9579
9580         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9581         if (!infoattr)
9582                 goto nla_put_failure;
9583
9584         if (survey->channel &&
9585             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9586                         survey->channel->center_freq))
9587                 goto nla_put_failure;
9588
9589         if (survey->channel && survey->channel->freq_offset &&
9590             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9591                         survey->channel->freq_offset))
9592                 goto nla_put_failure;
9593
9594         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9595             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9596                 goto nla_put_failure;
9597         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9598             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9599                 goto nla_put_failure;
9600         if ((survey->filled & SURVEY_INFO_TIME) &&
9601             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9602                         survey->time, NL80211_SURVEY_INFO_PAD))
9603                 goto nla_put_failure;
9604         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9605             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9606                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9607                 goto nla_put_failure;
9608         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9609             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9610                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9611                 goto nla_put_failure;
9612         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9613             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9614                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9615                 goto nla_put_failure;
9616         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9617             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9618                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9619                 goto nla_put_failure;
9620         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9621             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9622                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9623                 goto nla_put_failure;
9624         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9625             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9626                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9627                 goto nla_put_failure;
9628
9629         nla_nest_end(msg, infoattr);
9630
9631         genlmsg_end(msg, hdr);
9632         return 0;
9633
9634  nla_put_failure:
9635         genlmsg_cancel(msg, hdr);
9636         return -EMSGSIZE;
9637 }
9638
9639 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9640 {
9641         struct nlattr **attrbuf;
9642         struct survey_info survey;
9643         struct cfg80211_registered_device *rdev;
9644         struct wireless_dev *wdev;
9645         int survey_idx = cb->args[2];
9646         int res;
9647         bool radio_stats;
9648
9649         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9650         if (!attrbuf)
9651                 return -ENOMEM;
9652
9653         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9654         if (res) {
9655                 kfree(attrbuf);
9656                 return res;
9657         }
9658         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9659         __acquire(&rdev->wiphy.mtx);
9660
9661         /* prepare_wdev_dump parsed the attributes */
9662         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9663
9664         if (!wdev->netdev) {
9665                 res = -EINVAL;
9666                 goto out_err;
9667         }
9668
9669         if (!rdev->ops->dump_survey) {
9670                 res = -EOPNOTSUPP;
9671                 goto out_err;
9672         }
9673
9674         while (1) {
9675                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9676                 if (res == -ENOENT)
9677                         break;
9678                 if (res)
9679                         goto out_err;
9680
9681                 /* don't send disabled channels, but do send non-channel data */
9682                 if (survey.channel &&
9683                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9684                         survey_idx++;
9685                         continue;
9686                 }
9687
9688                 if (nl80211_send_survey(skb,
9689                                 NETLINK_CB(cb->skb).portid,
9690                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9691                                 wdev->netdev, radio_stats, &survey) < 0)
9692                         goto out;
9693                 survey_idx++;
9694         }
9695
9696  out:
9697         cb->args[2] = survey_idx;
9698         res = skb->len;
9699  out_err:
9700         kfree(attrbuf);
9701         wiphy_unlock(&rdev->wiphy);
9702         return res;
9703 }
9704
9705 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9706 {
9707         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9708                                   NL80211_WPA_VERSION_2 |
9709                                   NL80211_WPA_VERSION_3));
9710 }
9711
9712 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9713 {
9714         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9715         struct net_device *dev = info->user_ptr[1];
9716         struct ieee80211_channel *chan;
9717         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9718         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9719         enum nl80211_auth_type auth_type;
9720         struct key_parse key;
9721         bool local_state_change;
9722         u32 freq;
9723
9724         if (!info->attrs[NL80211_ATTR_MAC])
9725                 return -EINVAL;
9726
9727         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9728                 return -EINVAL;
9729
9730         if (!info->attrs[NL80211_ATTR_SSID])
9731                 return -EINVAL;
9732
9733         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9734                 return -EINVAL;
9735
9736         err = nl80211_parse_key(info, &key);
9737         if (err)
9738                 return err;
9739
9740         if (key.idx >= 0) {
9741                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9742                         return -EINVAL;
9743                 if (!key.p.key || !key.p.key_len)
9744                         return -EINVAL;
9745                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9746                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9747                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9748                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9749                         return -EINVAL;
9750                 if (key.idx > 3)
9751                         return -EINVAL;
9752         } else {
9753                 key.p.key_len = 0;
9754                 key.p.key = NULL;
9755         }
9756
9757         if (key.idx >= 0) {
9758                 int i;
9759                 bool ok = false;
9760
9761                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9762                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9763                                 ok = true;
9764                                 break;
9765                         }
9766                 }
9767                 if (!ok)
9768                         return -EINVAL;
9769         }
9770
9771         if (!rdev->ops->auth)
9772                 return -EOPNOTSUPP;
9773
9774         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9775             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9776                 return -EOPNOTSUPP;
9777
9778         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9779         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9780         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9781                 freq +=
9782                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9783
9784         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9785         if (!chan)
9786                 return -EINVAL;
9787
9788         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9789         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9790
9791         if (info->attrs[NL80211_ATTR_IE]) {
9792                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9793                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9794         }
9795
9796         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9797         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9798                 return -EINVAL;
9799
9800         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9801              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9802              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9803              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9804             !info->attrs[NL80211_ATTR_AUTH_DATA])
9805                 return -EINVAL;
9806
9807         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9808                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9809                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9810                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9811                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9812                         return -EINVAL;
9813                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9814                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9815         }
9816
9817         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9818
9819         /*
9820          * Since we no longer track auth state, ignore
9821          * requests to only change local state.
9822          */
9823         if (local_state_change)
9824                 return 0;
9825
9826         wdev_lock(dev->ieee80211_ptr);
9827         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9828                                  ssid, ssid_len, ie, ie_len,
9829                                  key.p.key, key.p.key_len, key.idx,
9830                                  auth_data, auth_data_len);
9831         wdev_unlock(dev->ieee80211_ptr);
9832         return err;
9833 }
9834
9835 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9836                                      struct genl_info *info)
9837 {
9838         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9839                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9840                 return -EINVAL;
9841         }
9842
9843         if (!rdev->ops->tx_control_port ||
9844             !wiphy_ext_feature_isset(&rdev->wiphy,
9845                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9846                 return -EOPNOTSUPP;
9847
9848         return 0;
9849 }
9850
9851 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9852                                    struct genl_info *info,
9853                                    struct cfg80211_crypto_settings *settings,
9854                                    int cipher_limit)
9855 {
9856         memset(settings, 0, sizeof(*settings));
9857
9858         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9859
9860         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9861                 u16 proto;
9862
9863                 proto = nla_get_u16(
9864                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9865                 settings->control_port_ethertype = cpu_to_be16(proto);
9866                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9867                     proto != ETH_P_PAE)
9868                         return -EINVAL;
9869                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9870                         settings->control_port_no_encrypt = true;
9871         } else
9872                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9873
9874         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9875                 int r = validate_pae_over_nl80211(rdev, info);
9876
9877                 if (r < 0)
9878                         return r;
9879
9880                 settings->control_port_over_nl80211 = true;
9881
9882                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9883                         settings->control_port_no_preauth = true;
9884         }
9885
9886         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9887                 void *data;
9888                 int len, i;
9889
9890                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9891                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9892                 settings->n_ciphers_pairwise = len / sizeof(u32);
9893
9894                 if (len % sizeof(u32))
9895                         return -EINVAL;
9896
9897                 if (settings->n_ciphers_pairwise > cipher_limit)
9898                         return -EINVAL;
9899
9900                 memcpy(settings->ciphers_pairwise, data, len);
9901
9902                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9903                         if (!cfg80211_supported_cipher_suite(
9904                                         &rdev->wiphy,
9905                                         settings->ciphers_pairwise[i]))
9906                                 return -EINVAL;
9907         }
9908
9909         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9910                 settings->cipher_group =
9911                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9912                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9913                                                      settings->cipher_group))
9914                         return -EINVAL;
9915         }
9916
9917         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9918                 settings->wpa_versions =
9919                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9920                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9921                         return -EINVAL;
9922         }
9923
9924         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9925                 void *data;
9926                 int len;
9927
9928                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9929                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9930                 settings->n_akm_suites = len / sizeof(u32);
9931
9932                 if (len % sizeof(u32))
9933                         return -EINVAL;
9934
9935                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9936                         return -EINVAL;
9937
9938                 memcpy(settings->akm_suites, data, len);
9939         }
9940
9941         if (info->attrs[NL80211_ATTR_PMK]) {
9942                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9943                         return -EINVAL;
9944                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9945                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9946                     !wiphy_ext_feature_isset(&rdev->wiphy,
9947                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9948                         return -EINVAL;
9949                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9950         }
9951
9952         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9953                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9954                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9955                     !wiphy_ext_feature_isset(&rdev->wiphy,
9956                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9957                         return -EINVAL;
9958                 settings->sae_pwd =
9959                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9960                 settings->sae_pwd_len =
9961                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9962         }
9963
9964         if (info->attrs[NL80211_ATTR_SAE_PWE])
9965                 settings->sae_pwe =
9966                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
9967         else
9968                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
9969
9970         return 0;
9971 }
9972
9973 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9974 {
9975         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9976         struct net_device *dev = info->user_ptr[1];
9977         struct ieee80211_channel *chan;
9978         struct cfg80211_assoc_request req = {};
9979         const u8 *bssid, *ssid;
9980         int err, ssid_len = 0;
9981         u32 freq;
9982
9983         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9984             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9985                 return -EPERM;
9986
9987         if (!info->attrs[NL80211_ATTR_MAC] ||
9988             !info->attrs[NL80211_ATTR_SSID] ||
9989             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9990                 return -EINVAL;
9991
9992         if (!rdev->ops->assoc)
9993                 return -EOPNOTSUPP;
9994
9995         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9996             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9997                 return -EOPNOTSUPP;
9998
9999         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10000
10001         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10002         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10003                 freq +=
10004                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10005         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10006         if (!chan)
10007                 return -EINVAL;
10008
10009         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10010         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10011
10012         if (info->attrs[NL80211_ATTR_IE]) {
10013                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10014                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10015         }
10016
10017         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10018                 enum nl80211_mfp mfp =
10019                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10020                 if (mfp == NL80211_MFP_REQUIRED)
10021                         req.use_mfp = true;
10022                 else if (mfp != NL80211_MFP_NO)
10023                         return -EINVAL;
10024         }
10025
10026         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10027                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10028
10029         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10030                 req.flags |= ASSOC_REQ_DISABLE_HT;
10031
10032         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10033                 memcpy(&req.ht_capa_mask,
10034                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10035                        sizeof(req.ht_capa_mask));
10036
10037         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10038                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10039                         return -EINVAL;
10040                 memcpy(&req.ht_capa,
10041                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10042                        sizeof(req.ht_capa));
10043         }
10044
10045         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10046                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10047
10048         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10049                 req.flags |= ASSOC_REQ_DISABLE_HE;
10050
10051         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10052                 memcpy(&req.vht_capa_mask,
10053                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10054                        sizeof(req.vht_capa_mask));
10055
10056         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10057                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10058                         return -EINVAL;
10059                 memcpy(&req.vht_capa,
10060                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10061                        sizeof(req.vht_capa));
10062         }
10063
10064         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10065                 if (!((rdev->wiphy.features &
10066                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10067                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10068                     !wiphy_ext_feature_isset(&rdev->wiphy,
10069                                              NL80211_EXT_FEATURE_RRM))
10070                         return -EINVAL;
10071                 req.flags |= ASSOC_REQ_USE_RRM;
10072         }
10073
10074         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10075                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10076                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10077                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10078                         return -EINVAL;
10079                 req.fils_nonces =
10080                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10081         }
10082
10083         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10084                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10085                         return -EINVAL;
10086                 memcpy(&req.s1g_capa_mask,
10087                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10088                        sizeof(req.s1g_capa_mask));
10089         }
10090
10091         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10092                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10093                         return -EINVAL;
10094                 memcpy(&req.s1g_capa,
10095                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10096                        sizeof(req.s1g_capa));
10097         }
10098
10099         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10100         if (!err) {
10101                 wdev_lock(dev->ieee80211_ptr);
10102
10103                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
10104                                           ssid, ssid_len, &req);
10105
10106                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10107                         dev->ieee80211_ptr->conn_owner_nlportid =
10108                                 info->snd_portid;
10109                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10110                                bssid, ETH_ALEN);
10111                 }
10112
10113                 wdev_unlock(dev->ieee80211_ptr);
10114         }
10115
10116         return err;
10117 }
10118
10119 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10120 {
10121         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10122         struct net_device *dev = info->user_ptr[1];
10123         const u8 *ie = NULL, *bssid;
10124         int ie_len = 0, err;
10125         u16 reason_code;
10126         bool local_state_change;
10127
10128         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10129             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10130                 return -EPERM;
10131
10132         if (!info->attrs[NL80211_ATTR_MAC])
10133                 return -EINVAL;
10134
10135         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10136                 return -EINVAL;
10137
10138         if (!rdev->ops->deauth)
10139                 return -EOPNOTSUPP;
10140
10141         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10142             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10143                 return -EOPNOTSUPP;
10144
10145         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10146
10147         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10148         if (reason_code == 0) {
10149                 /* Reason Code 0 is reserved */
10150                 return -EINVAL;
10151         }
10152
10153         if (info->attrs[NL80211_ATTR_IE]) {
10154                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10155                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10156         }
10157
10158         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10159
10160         wdev_lock(dev->ieee80211_ptr);
10161         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
10162                                    local_state_change);
10163         wdev_unlock(dev->ieee80211_ptr);
10164         return err;
10165 }
10166
10167 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
10168 {
10169         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10170         struct net_device *dev = info->user_ptr[1];
10171         const u8 *ie = NULL, *bssid;
10172         int ie_len = 0, err;
10173         u16 reason_code;
10174         bool local_state_change;
10175
10176         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10177             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10178                 return -EPERM;
10179
10180         if (!info->attrs[NL80211_ATTR_MAC])
10181                 return -EINVAL;
10182
10183         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10184                 return -EINVAL;
10185
10186         if (!rdev->ops->disassoc)
10187                 return -EOPNOTSUPP;
10188
10189         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10190             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10191                 return -EOPNOTSUPP;
10192
10193         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10194
10195         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10196         if (reason_code == 0) {
10197                 /* Reason Code 0 is reserved */
10198                 return -EINVAL;
10199         }
10200
10201         if (info->attrs[NL80211_ATTR_IE]) {
10202                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10203                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10204         }
10205
10206         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10207
10208         wdev_lock(dev->ieee80211_ptr);
10209         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
10210                                      local_state_change);
10211         wdev_unlock(dev->ieee80211_ptr);
10212         return err;
10213 }
10214
10215 static bool
10216 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
10217                          int mcast_rate[NUM_NL80211_BANDS],
10218                          int rateval)
10219 {
10220         struct wiphy *wiphy = &rdev->wiphy;
10221         bool found = false;
10222         int band, i;
10223
10224         for (band = 0; band < NUM_NL80211_BANDS; band++) {
10225                 struct ieee80211_supported_band *sband;
10226
10227                 sband = wiphy->bands[band];
10228                 if (!sband)
10229                         continue;
10230
10231                 for (i = 0; i < sband->n_bitrates; i++) {
10232                         if (sband->bitrates[i].bitrate == rateval) {
10233                                 mcast_rate[band] = i + 1;
10234                                 found = true;
10235                                 break;
10236                         }
10237                 }
10238         }
10239
10240         return found;
10241 }
10242
10243 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10244 {
10245         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10246         struct net_device *dev = info->user_ptr[1];
10247         struct cfg80211_ibss_params ibss;
10248         struct wiphy *wiphy;
10249         struct cfg80211_cached_keys *connkeys = NULL;
10250         int err;
10251
10252         memset(&ibss, 0, sizeof(ibss));
10253
10254         if (!info->attrs[NL80211_ATTR_SSID] ||
10255             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10256                 return -EINVAL;
10257
10258         ibss.beacon_interval = 100;
10259
10260         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10261                 ibss.beacon_interval =
10262                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10263
10264         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10265                                            ibss.beacon_interval);
10266         if (err)
10267                 return err;
10268
10269         if (!rdev->ops->join_ibss)
10270                 return -EOPNOTSUPP;
10271
10272         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10273                 return -EOPNOTSUPP;
10274
10275         wiphy = &rdev->wiphy;
10276
10277         if (info->attrs[NL80211_ATTR_MAC]) {
10278                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10279
10280                 if (!is_valid_ether_addr(ibss.bssid))
10281                         return -EINVAL;
10282         }
10283         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10284         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10285
10286         if (info->attrs[NL80211_ATTR_IE]) {
10287                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10288                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10289         }
10290
10291         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10292         if (err)
10293                 return err;
10294
10295         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10296                                      NL80211_IFTYPE_ADHOC))
10297                 return -EINVAL;
10298
10299         switch (ibss.chandef.width) {
10300         case NL80211_CHAN_WIDTH_5:
10301         case NL80211_CHAN_WIDTH_10:
10302         case NL80211_CHAN_WIDTH_20_NOHT:
10303                 break;
10304         case NL80211_CHAN_WIDTH_20:
10305         case NL80211_CHAN_WIDTH_40:
10306                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10307                         return -EINVAL;
10308                 break;
10309         case NL80211_CHAN_WIDTH_80:
10310         case NL80211_CHAN_WIDTH_80P80:
10311         case NL80211_CHAN_WIDTH_160:
10312                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10313                         return -EINVAL;
10314                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10315                                              NL80211_EXT_FEATURE_VHT_IBSS))
10316                         return -EINVAL;
10317                 break;
10318         default:
10319                 return -EINVAL;
10320         }
10321
10322         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10323         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10324
10325         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10326                 u8 *rates =
10327                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10328                 int n_rates =
10329                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10330                 struct ieee80211_supported_band *sband =
10331                         wiphy->bands[ibss.chandef.chan->band];
10332
10333                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10334                                              &ibss.basic_rates);
10335                 if (err)
10336                         return err;
10337         }
10338
10339         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10340                 memcpy(&ibss.ht_capa_mask,
10341                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10342                        sizeof(ibss.ht_capa_mask));
10343
10344         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10345                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10346                         return -EINVAL;
10347                 memcpy(&ibss.ht_capa,
10348                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10349                        sizeof(ibss.ht_capa));
10350         }
10351
10352         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10353             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10354                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10355                 return -EINVAL;
10356
10357         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10358                 bool no_ht = false;
10359
10360                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10361                 if (IS_ERR(connkeys))
10362                         return PTR_ERR(connkeys);
10363
10364                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10365                     no_ht) {
10366                         kfree_sensitive(connkeys);
10367                         return -EINVAL;
10368                 }
10369         }
10370
10371         ibss.control_port =
10372                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10373
10374         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10375                 int r = validate_pae_over_nl80211(rdev, info);
10376
10377                 if (r < 0) {
10378                         kfree_sensitive(connkeys);
10379                         return r;
10380                 }
10381
10382                 ibss.control_port_over_nl80211 = true;
10383         }
10384
10385         ibss.userspace_handles_dfs =
10386                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10387
10388         wdev_lock(dev->ieee80211_ptr);
10389         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10390         if (err)
10391                 kfree_sensitive(connkeys);
10392         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10393                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10394         wdev_unlock(dev->ieee80211_ptr);
10395
10396         return err;
10397 }
10398
10399 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10400 {
10401         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10402         struct net_device *dev = info->user_ptr[1];
10403
10404         if (!rdev->ops->leave_ibss)
10405                 return -EOPNOTSUPP;
10406
10407         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10408                 return -EOPNOTSUPP;
10409
10410         return cfg80211_leave_ibss(rdev, dev, false);
10411 }
10412
10413 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10414 {
10415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10416         struct net_device *dev = info->user_ptr[1];
10417         int mcast_rate[NUM_NL80211_BANDS];
10418         u32 nla_rate;
10419         int err;
10420
10421         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10422             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10423             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10424                 return -EOPNOTSUPP;
10425
10426         if (!rdev->ops->set_mcast_rate)
10427                 return -EOPNOTSUPP;
10428
10429         memset(mcast_rate, 0, sizeof(mcast_rate));
10430
10431         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10432                 return -EINVAL;
10433
10434         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10435         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10436                 return -EINVAL;
10437
10438         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10439
10440         return err;
10441 }
10442
10443 static struct sk_buff *
10444 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10445                             struct wireless_dev *wdev, int approxlen,
10446                             u32 portid, u32 seq, enum nl80211_commands cmd,
10447                             enum nl80211_attrs attr,
10448                             const struct nl80211_vendor_cmd_info *info,
10449                             gfp_t gfp)
10450 {
10451         struct sk_buff *skb;
10452         void *hdr;
10453         struct nlattr *data;
10454
10455         skb = nlmsg_new(approxlen + 100, gfp);
10456         if (!skb)
10457                 return NULL;
10458
10459         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10460         if (!hdr) {
10461                 kfree_skb(skb);
10462                 return NULL;
10463         }
10464
10465         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10466                 goto nla_put_failure;
10467
10468         if (info) {
10469                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10470                                 info->vendor_id))
10471                         goto nla_put_failure;
10472                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10473                                 info->subcmd))
10474                         goto nla_put_failure;
10475         }
10476
10477         if (wdev) {
10478                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10479                                       wdev_id(wdev), NL80211_ATTR_PAD))
10480                         goto nla_put_failure;
10481                 if (wdev->netdev &&
10482                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10483                                 wdev->netdev->ifindex))
10484                         goto nla_put_failure;
10485         }
10486
10487         data = nla_nest_start_noflag(skb, attr);
10488         if (!data)
10489                 goto nla_put_failure;
10490
10491         ((void **)skb->cb)[0] = rdev;
10492         ((void **)skb->cb)[1] = hdr;
10493         ((void **)skb->cb)[2] = data;
10494
10495         return skb;
10496
10497  nla_put_failure:
10498         kfree_skb(skb);
10499         return NULL;
10500 }
10501
10502 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10503                                            struct wireless_dev *wdev,
10504                                            enum nl80211_commands cmd,
10505                                            enum nl80211_attrs attr,
10506                                            unsigned int portid,
10507                                            int vendor_event_idx,
10508                                            int approxlen, gfp_t gfp)
10509 {
10510         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10511         const struct nl80211_vendor_cmd_info *info;
10512
10513         switch (cmd) {
10514         case NL80211_CMD_TESTMODE:
10515                 if (WARN_ON(vendor_event_idx != -1))
10516                         return NULL;
10517                 info = NULL;
10518                 break;
10519         case NL80211_CMD_VENDOR:
10520                 if (WARN_ON(vendor_event_idx < 0 ||
10521                             vendor_event_idx >= wiphy->n_vendor_events))
10522                         return NULL;
10523                 info = &wiphy->vendor_events[vendor_event_idx];
10524                 break;
10525         default:
10526                 WARN_ON(1);
10527                 return NULL;
10528         }
10529
10530         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10531                                            cmd, attr, info, gfp);
10532 }
10533 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10534
10535 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10536 {
10537         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10538         void *hdr = ((void **)skb->cb)[1];
10539         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10540         struct nlattr *data = ((void **)skb->cb)[2];
10541         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10542
10543         /* clear CB data for netlink core to own from now on */
10544         memset(skb->cb, 0, sizeof(skb->cb));
10545
10546         nla_nest_end(skb, data);
10547         genlmsg_end(skb, hdr);
10548
10549         if (nlhdr->nlmsg_pid) {
10550                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10551                                 nlhdr->nlmsg_pid);
10552         } else {
10553                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10554                         mcgrp = NL80211_MCGRP_VENDOR;
10555
10556                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10557                                         skb, 0, mcgrp, gfp);
10558         }
10559 }
10560 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10561
10562 #ifdef CONFIG_NL80211_TESTMODE
10563 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10564 {
10565         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10566         struct wireless_dev *wdev;
10567         int err;
10568
10569         lockdep_assert_held(&rdev->wiphy.mtx);
10570
10571         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
10572                                           info->attrs);
10573
10574         if (!rdev->ops->testmode_cmd)
10575                 return -EOPNOTSUPP;
10576
10577         if (IS_ERR(wdev)) {
10578                 err = PTR_ERR(wdev);
10579                 if (err != -EINVAL)
10580                         return err;
10581                 wdev = NULL;
10582         } else if (wdev->wiphy != &rdev->wiphy) {
10583                 return -EINVAL;
10584         }
10585
10586         if (!info->attrs[NL80211_ATTR_TESTDATA])
10587                 return -EINVAL;
10588
10589         rdev->cur_cmd_info = info;
10590         err = rdev_testmode_cmd(rdev, wdev,
10591                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10592                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10593         rdev->cur_cmd_info = NULL;
10594
10595         return err;
10596 }
10597
10598 static int nl80211_testmode_dump(struct sk_buff *skb,
10599                                  struct netlink_callback *cb)
10600 {
10601         struct cfg80211_registered_device *rdev;
10602         struct nlattr **attrbuf = NULL;
10603         int err;
10604         long phy_idx;
10605         void *data = NULL;
10606         int data_len = 0;
10607
10608         rtnl_lock();
10609
10610         if (cb->args[0]) {
10611                 /*
10612                  * 0 is a valid index, but not valid for args[0],
10613                  * so we need to offset by 1.
10614                  */
10615                 phy_idx = cb->args[0] - 1;
10616
10617                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10618                 if (!rdev) {
10619                         err = -ENOENT;
10620                         goto out_err;
10621                 }
10622         } else {
10623                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10624                                   GFP_KERNEL);
10625                 if (!attrbuf) {
10626                         err = -ENOMEM;
10627                         goto out_err;
10628                 }
10629
10630                 err = nlmsg_parse_deprecated(cb->nlh,
10631                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10632                                              attrbuf, nl80211_fam.maxattr,
10633                                              nl80211_policy, NULL);
10634                 if (err)
10635                         goto out_err;
10636
10637                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10638                 if (IS_ERR(rdev)) {
10639                         err = PTR_ERR(rdev);
10640                         goto out_err;
10641                 }
10642                 phy_idx = rdev->wiphy_idx;
10643
10644                 if (attrbuf[NL80211_ATTR_TESTDATA])
10645                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10646         }
10647
10648         if (cb->args[1]) {
10649                 data = nla_data((void *)cb->args[1]);
10650                 data_len = nla_len((void *)cb->args[1]);
10651         }
10652
10653         if (!rdev->ops->testmode_dump) {
10654                 err = -EOPNOTSUPP;
10655                 goto out_err;
10656         }
10657
10658         while (1) {
10659                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10660                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10661                                            NL80211_CMD_TESTMODE);
10662                 struct nlattr *tmdata;
10663
10664                 if (!hdr)
10665                         break;
10666
10667                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10668                         genlmsg_cancel(skb, hdr);
10669                         break;
10670                 }
10671
10672                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10673                 if (!tmdata) {
10674                         genlmsg_cancel(skb, hdr);
10675                         break;
10676                 }
10677                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10678                 nla_nest_end(skb, tmdata);
10679
10680                 if (err == -ENOBUFS || err == -ENOENT) {
10681                         genlmsg_cancel(skb, hdr);
10682                         break;
10683                 } else if (err) {
10684                         genlmsg_cancel(skb, hdr);
10685                         goto out_err;
10686                 }
10687
10688                 genlmsg_end(skb, hdr);
10689         }
10690
10691         err = skb->len;
10692         /* see above */
10693         cb->args[0] = phy_idx + 1;
10694  out_err:
10695         kfree(attrbuf);
10696         rtnl_unlock();
10697         return err;
10698 }
10699 #endif
10700
10701 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10702 {
10703         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10704         struct net_device *dev = info->user_ptr[1];
10705         struct cfg80211_connect_params connect;
10706         struct wiphy *wiphy;
10707         struct cfg80211_cached_keys *connkeys = NULL;
10708         u32 freq = 0;
10709         int err;
10710
10711         memset(&connect, 0, sizeof(connect));
10712
10713         if (!info->attrs[NL80211_ATTR_SSID] ||
10714             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10715                 return -EINVAL;
10716
10717         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10718                 connect.auth_type =
10719                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10720                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10721                                              NL80211_CMD_CONNECT))
10722                         return -EINVAL;
10723         } else
10724                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10725
10726         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10727
10728         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10729             !wiphy_ext_feature_isset(&rdev->wiphy,
10730                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10731                 return -EINVAL;
10732         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10733
10734         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10735                                       NL80211_MAX_NR_CIPHER_SUITES);
10736         if (err)
10737                 return err;
10738
10739         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10740             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10741                 return -EOPNOTSUPP;
10742
10743         wiphy = &rdev->wiphy;
10744
10745         connect.bg_scan_period = -1;
10746         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10747                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10748                 connect.bg_scan_period =
10749                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10750         }
10751
10752         if (info->attrs[NL80211_ATTR_MAC])
10753                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10754         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10755                 connect.bssid_hint =
10756                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10757         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10758         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10759
10760         if (info->attrs[NL80211_ATTR_IE]) {
10761                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10762                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10763         }
10764
10765         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10766                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10767                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10768                     !wiphy_ext_feature_isset(&rdev->wiphy,
10769                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10770                         return -EOPNOTSUPP;
10771         } else {
10772                 connect.mfp = NL80211_MFP_NO;
10773         }
10774
10775         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10776                 connect.prev_bssid =
10777                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10778
10779         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10780                 freq = MHZ_TO_KHZ(nla_get_u32(
10781                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10782         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10783                 freq +=
10784                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10785
10786         if (freq) {
10787                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10788                 if (!connect.channel)
10789                         return -EINVAL;
10790         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10791                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10792                 freq = MHZ_TO_KHZ(freq);
10793                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10794                 if (!connect.channel_hint)
10795                         return -EINVAL;
10796         }
10797
10798         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10799                 connect.edmg.channels =
10800                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10801
10802                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10803                         connect.edmg.bw_config =
10804                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10805         }
10806
10807         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10808                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10809                 if (IS_ERR(connkeys))
10810                         return PTR_ERR(connkeys);
10811         }
10812
10813         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10814                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10815
10816         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10817                 memcpy(&connect.ht_capa_mask,
10818                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10819                        sizeof(connect.ht_capa_mask));
10820
10821         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10822                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10823                         kfree_sensitive(connkeys);
10824                         return -EINVAL;
10825                 }
10826                 memcpy(&connect.ht_capa,
10827                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10828                        sizeof(connect.ht_capa));
10829         }
10830
10831         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10832                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10833
10834         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10835                 connect.flags |= ASSOC_REQ_DISABLE_HE;
10836
10837         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10838                 memcpy(&connect.vht_capa_mask,
10839                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10840                        sizeof(connect.vht_capa_mask));
10841
10842         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10843                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10844                         kfree_sensitive(connkeys);
10845                         return -EINVAL;
10846                 }
10847                 memcpy(&connect.vht_capa,
10848                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10849                        sizeof(connect.vht_capa));
10850         }
10851
10852         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10853                 if (!((rdev->wiphy.features &
10854                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10855                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10856                     !wiphy_ext_feature_isset(&rdev->wiphy,
10857                                              NL80211_EXT_FEATURE_RRM)) {
10858                         kfree_sensitive(connkeys);
10859                         return -EINVAL;
10860                 }
10861                 connect.flags |= ASSOC_REQ_USE_RRM;
10862         }
10863
10864         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10865         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10866                 kfree_sensitive(connkeys);
10867                 return -EOPNOTSUPP;
10868         }
10869
10870         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10871                 /* bss selection makes no sense if bssid is set */
10872                 if (connect.bssid) {
10873                         kfree_sensitive(connkeys);
10874                         return -EINVAL;
10875                 }
10876
10877                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10878                                        wiphy, &connect.bss_select);
10879                 if (err) {
10880                         kfree_sensitive(connkeys);
10881                         return err;
10882                 }
10883         }
10884
10885         if (wiphy_ext_feature_isset(&rdev->wiphy,
10886                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10887             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10888             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10889             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10890             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10891                 connect.fils_erp_username =
10892                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10893                 connect.fils_erp_username_len =
10894                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10895                 connect.fils_erp_realm =
10896                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10897                 connect.fils_erp_realm_len =
10898                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10899                 connect.fils_erp_next_seq_num =
10900                         nla_get_u16(
10901                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10902                 connect.fils_erp_rrk =
10903                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10904                 connect.fils_erp_rrk_len =
10905                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10906         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10907                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10908                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10909                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10910                 kfree_sensitive(connkeys);
10911                 return -EINVAL;
10912         }
10913
10914         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10915                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10916                         kfree_sensitive(connkeys);
10917                         GENL_SET_ERR_MSG(info,
10918                                          "external auth requires connection ownership");
10919                         return -EINVAL;
10920                 }
10921                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10922         }
10923
10924         wdev_lock(dev->ieee80211_ptr);
10925
10926         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10927                                connect.prev_bssid);
10928         if (err)
10929                 kfree_sensitive(connkeys);
10930
10931         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10932                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10933                 if (connect.bssid)
10934                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10935                                connect.bssid, ETH_ALEN);
10936                 else
10937                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10938         }
10939
10940         wdev_unlock(dev->ieee80211_ptr);
10941
10942         return err;
10943 }
10944
10945 static int nl80211_update_connect_params(struct sk_buff *skb,
10946                                          struct genl_info *info)
10947 {
10948         struct cfg80211_connect_params connect = {};
10949         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10950         struct net_device *dev = info->user_ptr[1];
10951         struct wireless_dev *wdev = dev->ieee80211_ptr;
10952         bool fils_sk_offload;
10953         u32 auth_type;
10954         u32 changed = 0;
10955         int ret;
10956
10957         if (!rdev->ops->update_connect_params)
10958                 return -EOPNOTSUPP;
10959
10960         if (info->attrs[NL80211_ATTR_IE]) {
10961                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10962                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10963                 changed |= UPDATE_ASSOC_IES;
10964         }
10965
10966         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10967                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10968
10969         /*
10970          * when driver supports fils-sk offload all attributes must be
10971          * provided. So the else covers "fils-sk-not-all" and
10972          * "no-fils-sk-any".
10973          */
10974         if (fils_sk_offload &&
10975             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10976             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10977             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10978             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10979                 connect.fils_erp_username =
10980                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10981                 connect.fils_erp_username_len =
10982                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10983                 connect.fils_erp_realm =
10984                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10985                 connect.fils_erp_realm_len =
10986                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10987                 connect.fils_erp_next_seq_num =
10988                         nla_get_u16(
10989                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10990                 connect.fils_erp_rrk =
10991                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10992                 connect.fils_erp_rrk_len =
10993                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10994                 changed |= UPDATE_FILS_ERP_INFO;
10995         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10996                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10997                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10998                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10999                 return -EINVAL;
11000         }
11001
11002         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11003                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11004                 if (!nl80211_valid_auth_type(rdev, auth_type,
11005                                              NL80211_CMD_CONNECT))
11006                         return -EINVAL;
11007
11008                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11009                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11010                         return -EINVAL;
11011
11012                 connect.auth_type = auth_type;
11013                 changed |= UPDATE_AUTH_TYPE;
11014         }
11015
11016         wdev_lock(dev->ieee80211_ptr);
11017         if (!wdev->current_bss)
11018                 ret = -ENOLINK;
11019         else
11020                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11021         wdev_unlock(dev->ieee80211_ptr);
11022
11023         return ret;
11024 }
11025
11026 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11027 {
11028         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11029         struct net_device *dev = info->user_ptr[1];
11030         u16 reason;
11031         int ret;
11032
11033         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11034             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11035                 return -EPERM;
11036
11037         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11038                 reason = WLAN_REASON_DEAUTH_LEAVING;
11039         else
11040                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11041
11042         if (reason == 0)
11043                 return -EINVAL;
11044
11045         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11046             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11047                 return -EOPNOTSUPP;
11048
11049         wdev_lock(dev->ieee80211_ptr);
11050         ret = cfg80211_disconnect(rdev, dev, reason, true);
11051         wdev_unlock(dev->ieee80211_ptr);
11052         return ret;
11053 }
11054
11055 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11056 {
11057         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11058         struct net *net;
11059         int err;
11060
11061         if (info->attrs[NL80211_ATTR_PID]) {
11062                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11063
11064                 net = get_net_ns_by_pid(pid);
11065         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11066                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11067
11068                 net = get_net_ns_by_fd(fd);
11069         } else {
11070                 return -EINVAL;
11071         }
11072
11073         if (IS_ERR(net))
11074                 return PTR_ERR(net);
11075
11076         err = 0;
11077
11078         /* check if anything to do */
11079         if (!net_eq(wiphy_net(&rdev->wiphy), net))
11080                 err = cfg80211_switch_netns(rdev, net);
11081
11082         put_net(net);
11083         return err;
11084 }
11085
11086 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11087 {
11088         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11089         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11090                         struct cfg80211_pmksa *pmksa) = NULL;
11091         struct net_device *dev = info->user_ptr[1];
11092         struct cfg80211_pmksa pmksa;
11093
11094         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11095
11096         if (!info->attrs[NL80211_ATTR_PMKID])
11097                 return -EINVAL;
11098
11099         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11100
11101         if (info->attrs[NL80211_ATTR_MAC]) {
11102                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11103         } else if (info->attrs[NL80211_ATTR_SSID] &&
11104                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11105                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11106                     info->attrs[NL80211_ATTR_PMK])) {
11107                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11108                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11109                 pmksa.cache_id =
11110                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11111         } else {
11112                 return -EINVAL;
11113         }
11114         if (info->attrs[NL80211_ATTR_PMK]) {
11115                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11116                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11117         }
11118
11119         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11120                 pmksa.pmk_lifetime =
11121                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11122
11123         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11124                 pmksa.pmk_reauth_threshold =
11125                         nla_get_u8(
11126                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11127
11128         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11129             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
11130             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
11131               wiphy_ext_feature_isset(&rdev->wiphy,
11132                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
11133                 return -EOPNOTSUPP;
11134
11135         switch (info->genlhdr->cmd) {
11136         case NL80211_CMD_SET_PMKSA:
11137                 rdev_ops = rdev->ops->set_pmksa;
11138                 break;
11139         case NL80211_CMD_DEL_PMKSA:
11140                 rdev_ops = rdev->ops->del_pmksa;
11141                 break;
11142         default:
11143                 WARN_ON(1);
11144                 break;
11145         }
11146
11147         if (!rdev_ops)
11148                 return -EOPNOTSUPP;
11149
11150         return rdev_ops(&rdev->wiphy, dev, &pmksa);
11151 }
11152
11153 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
11154 {
11155         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11156         struct net_device *dev = info->user_ptr[1];
11157
11158         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11159             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11160                 return -EOPNOTSUPP;
11161
11162         if (!rdev->ops->flush_pmksa)
11163                 return -EOPNOTSUPP;
11164
11165         return rdev_flush_pmksa(rdev, dev);
11166 }
11167
11168 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
11169 {
11170         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11171         struct net_device *dev = info->user_ptr[1];
11172         u8 action_code, dialog_token;
11173         u32 peer_capability = 0;
11174         u16 status_code;
11175         u8 *peer;
11176         bool initiator;
11177
11178         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11179             !rdev->ops->tdls_mgmt)
11180                 return -EOPNOTSUPP;
11181
11182         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
11183             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
11184             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
11185             !info->attrs[NL80211_ATTR_IE] ||
11186             !info->attrs[NL80211_ATTR_MAC])
11187                 return -EINVAL;
11188
11189         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11190         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
11191         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
11192         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
11193         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
11194         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
11195                 peer_capability =
11196                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
11197
11198         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
11199                               dialog_token, status_code, peer_capability,
11200                               initiator,
11201                               nla_data(info->attrs[NL80211_ATTR_IE]),
11202                               nla_len(info->attrs[NL80211_ATTR_IE]));
11203 }
11204
11205 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
11206 {
11207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11208         struct net_device *dev = info->user_ptr[1];
11209         enum nl80211_tdls_operation operation;
11210         u8 *peer;
11211
11212         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11213             !rdev->ops->tdls_oper)
11214                 return -EOPNOTSUPP;
11215
11216         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
11217             !info->attrs[NL80211_ATTR_MAC])
11218                 return -EINVAL;
11219
11220         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
11221         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11222
11223         return rdev_tdls_oper(rdev, dev, peer, operation);
11224 }
11225
11226 static int nl80211_remain_on_channel(struct sk_buff *skb,
11227                                      struct genl_info *info)
11228 {
11229         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11230         struct wireless_dev *wdev = info->user_ptr[1];
11231         struct cfg80211_chan_def chandef;
11232         const struct cfg80211_chan_def *compat_chandef;
11233         struct sk_buff *msg;
11234         void *hdr;
11235         u64 cookie;
11236         u32 duration;
11237         int err;
11238
11239         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11240             !info->attrs[NL80211_ATTR_DURATION])
11241                 return -EINVAL;
11242
11243         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11244
11245         if (!rdev->ops->remain_on_channel ||
11246             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11247                 return -EOPNOTSUPP;
11248
11249         /*
11250          * We should be on that channel for at least a minimum amount of
11251          * time (10ms) but no longer than the driver supports.
11252          */
11253         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11254             duration > rdev->wiphy.max_remain_on_channel_duration)
11255                 return -EINVAL;
11256
11257         err = nl80211_parse_chandef(rdev, info, &chandef);
11258         if (err)
11259                 return err;
11260
11261         wdev_lock(wdev);
11262         if (!cfg80211_off_channel_oper_allowed(wdev) &&
11263             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11264                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11265                                                              &chandef);
11266                 if (compat_chandef != &chandef) {
11267                         wdev_unlock(wdev);
11268                         return -EBUSY;
11269                 }
11270         }
11271         wdev_unlock(wdev);
11272
11273         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11274         if (!msg)
11275                 return -ENOMEM;
11276
11277         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11278                              NL80211_CMD_REMAIN_ON_CHANNEL);
11279         if (!hdr) {
11280                 err = -ENOBUFS;
11281                 goto free_msg;
11282         }
11283
11284         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11285                                      duration, &cookie);
11286
11287         if (err)
11288                 goto free_msg;
11289
11290         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11291                               NL80211_ATTR_PAD))
11292                 goto nla_put_failure;
11293
11294         genlmsg_end(msg, hdr);
11295
11296         return genlmsg_reply(msg, info);
11297
11298  nla_put_failure:
11299         err = -ENOBUFS;
11300  free_msg:
11301         nlmsg_free(msg);
11302         return err;
11303 }
11304
11305 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11306                                             struct genl_info *info)
11307 {
11308         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11309         struct wireless_dev *wdev = info->user_ptr[1];
11310         u64 cookie;
11311
11312         if (!info->attrs[NL80211_ATTR_COOKIE])
11313                 return -EINVAL;
11314
11315         if (!rdev->ops->cancel_remain_on_channel)
11316                 return -EOPNOTSUPP;
11317
11318         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11319
11320         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11321 }
11322
11323 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11324                                        struct genl_info *info)
11325 {
11326         struct cfg80211_bitrate_mask mask;
11327         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11328         struct net_device *dev = info->user_ptr[1];
11329         int err;
11330
11331         if (!rdev->ops->set_bitrate_mask)
11332                 return -EOPNOTSUPP;
11333
11334         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11335                                             NL80211_ATTR_TX_RATES, &mask,
11336                                             dev, true);
11337         if (err)
11338                 return err;
11339
11340         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11341 }
11342
11343 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11344 {
11345         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11346         struct wireless_dev *wdev = info->user_ptr[1];
11347         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11348
11349         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11350                 return -EINVAL;
11351
11352         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11353                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11354
11355         switch (wdev->iftype) {
11356         case NL80211_IFTYPE_STATION:
11357         case NL80211_IFTYPE_ADHOC:
11358         case NL80211_IFTYPE_P2P_CLIENT:
11359         case NL80211_IFTYPE_AP:
11360         case NL80211_IFTYPE_AP_VLAN:
11361         case NL80211_IFTYPE_MESH_POINT:
11362         case NL80211_IFTYPE_P2P_GO:
11363         case NL80211_IFTYPE_P2P_DEVICE:
11364                 break;
11365         case NL80211_IFTYPE_NAN:
11366         default:
11367                 return -EOPNOTSUPP;
11368         }
11369
11370         /* not much point in registering if we can't reply */
11371         if (!rdev->ops->mgmt_tx)
11372                 return -EOPNOTSUPP;
11373
11374         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11375             !wiphy_ext_feature_isset(&rdev->wiphy,
11376                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11377                 GENL_SET_ERR_MSG(info,
11378                                  "multicast RX registrations are not supported");
11379                 return -EOPNOTSUPP;
11380         }
11381
11382         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11383                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11384                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11385                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11386                                            info->extack);
11387 }
11388
11389 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11390 {
11391         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11392         struct wireless_dev *wdev = info->user_ptr[1];
11393         struct cfg80211_chan_def chandef;
11394         int err;
11395         void *hdr = NULL;
11396         u64 cookie;
11397         struct sk_buff *msg = NULL;
11398         struct cfg80211_mgmt_tx_params params = {
11399                 .dont_wait_for_ack =
11400                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11401         };
11402
11403         if (!info->attrs[NL80211_ATTR_FRAME])
11404                 return -EINVAL;
11405
11406         if (!rdev->ops->mgmt_tx)
11407                 return -EOPNOTSUPP;
11408
11409         switch (wdev->iftype) {
11410         case NL80211_IFTYPE_P2P_DEVICE:
11411                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11412                         return -EINVAL;
11413                 break;
11414         case NL80211_IFTYPE_STATION:
11415         case NL80211_IFTYPE_ADHOC:
11416         case NL80211_IFTYPE_P2P_CLIENT:
11417         case NL80211_IFTYPE_AP:
11418         case NL80211_IFTYPE_AP_VLAN:
11419         case NL80211_IFTYPE_MESH_POINT:
11420         case NL80211_IFTYPE_P2P_GO:
11421                 break;
11422         case NL80211_IFTYPE_NAN:
11423         default:
11424                 return -EOPNOTSUPP;
11425         }
11426
11427         if (info->attrs[NL80211_ATTR_DURATION]) {
11428                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11429                         return -EINVAL;
11430                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11431
11432                 /*
11433                  * We should wait on the channel for at least a minimum amount
11434                  * of time (10ms) but no longer than the driver supports.
11435                  */
11436                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11437                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
11438                         return -EINVAL;
11439         }
11440
11441         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11442
11443         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11444                 return -EINVAL;
11445
11446         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11447
11448         /* get the channel if any has been specified, otherwise pass NULL to
11449          * the driver. The latter will use the current one
11450          */
11451         chandef.chan = NULL;
11452         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11453                 err = nl80211_parse_chandef(rdev, info, &chandef);
11454                 if (err)
11455                         return err;
11456         }
11457
11458         if (!chandef.chan && params.offchan)
11459                 return -EINVAL;
11460
11461         wdev_lock(wdev);
11462         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11463                 wdev_unlock(wdev);
11464                 return -EBUSY;
11465         }
11466         wdev_unlock(wdev);
11467
11468         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11469         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11470
11471         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11472                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11473                 int i;
11474
11475                 if (len % sizeof(u16))
11476                         return -EINVAL;
11477
11478                 params.n_csa_offsets = len / sizeof(u16);
11479                 params.csa_offsets =
11480                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11481
11482                 /* check that all the offsets fit the frame */
11483                 for (i = 0; i < params.n_csa_offsets; i++) {
11484                         if (params.csa_offsets[i] >= params.len)
11485                                 return -EINVAL;
11486                 }
11487         }
11488
11489         if (!params.dont_wait_for_ack) {
11490                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11491                 if (!msg)
11492                         return -ENOMEM;
11493
11494                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11495                                      NL80211_CMD_FRAME);
11496                 if (!hdr) {
11497                         err = -ENOBUFS;
11498                         goto free_msg;
11499                 }
11500         }
11501
11502         params.chan = chandef.chan;
11503         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
11504         if (err)
11505                 goto free_msg;
11506
11507         if (msg) {
11508                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11509                                       NL80211_ATTR_PAD))
11510                         goto nla_put_failure;
11511
11512                 genlmsg_end(msg, hdr);
11513                 return genlmsg_reply(msg, info);
11514         }
11515
11516         return 0;
11517
11518  nla_put_failure:
11519         err = -ENOBUFS;
11520  free_msg:
11521         nlmsg_free(msg);
11522         return err;
11523 }
11524
11525 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11526 {
11527         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11528         struct wireless_dev *wdev = info->user_ptr[1];
11529         u64 cookie;
11530
11531         if (!info->attrs[NL80211_ATTR_COOKIE])
11532                 return -EINVAL;
11533
11534         if (!rdev->ops->mgmt_tx_cancel_wait)
11535                 return -EOPNOTSUPP;
11536
11537         switch (wdev->iftype) {
11538         case NL80211_IFTYPE_STATION:
11539         case NL80211_IFTYPE_ADHOC:
11540         case NL80211_IFTYPE_P2P_CLIENT:
11541         case NL80211_IFTYPE_AP:
11542         case NL80211_IFTYPE_AP_VLAN:
11543         case NL80211_IFTYPE_P2P_GO:
11544         case NL80211_IFTYPE_P2P_DEVICE:
11545                 break;
11546         case NL80211_IFTYPE_NAN:
11547         default:
11548                 return -EOPNOTSUPP;
11549         }
11550
11551         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11552
11553         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11554 }
11555
11556 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11557 {
11558         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11559         struct wireless_dev *wdev;
11560         struct net_device *dev = info->user_ptr[1];
11561         u8 ps_state;
11562         bool state;
11563         int err;
11564
11565         if (!info->attrs[NL80211_ATTR_PS_STATE])
11566                 return -EINVAL;
11567
11568         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11569
11570         wdev = dev->ieee80211_ptr;
11571
11572         if (!rdev->ops->set_power_mgmt)
11573                 return -EOPNOTSUPP;
11574
11575         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11576
11577         if (state == wdev->ps)
11578                 return 0;
11579
11580         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11581         if (!err)
11582                 wdev->ps = state;
11583         return err;
11584 }
11585
11586 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11587 {
11588         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11589         enum nl80211_ps_state ps_state;
11590         struct wireless_dev *wdev;
11591         struct net_device *dev = info->user_ptr[1];
11592         struct sk_buff *msg;
11593         void *hdr;
11594         int err;
11595
11596         wdev = dev->ieee80211_ptr;
11597
11598         if (!rdev->ops->set_power_mgmt)
11599                 return -EOPNOTSUPP;
11600
11601         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11602         if (!msg)
11603                 return -ENOMEM;
11604
11605         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11606                              NL80211_CMD_GET_POWER_SAVE);
11607         if (!hdr) {
11608                 err = -ENOBUFS;
11609                 goto free_msg;
11610         }
11611
11612         if (wdev->ps)
11613                 ps_state = NL80211_PS_ENABLED;
11614         else
11615                 ps_state = NL80211_PS_DISABLED;
11616
11617         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11618                 goto nla_put_failure;
11619
11620         genlmsg_end(msg, hdr);
11621         return genlmsg_reply(msg, info);
11622
11623  nla_put_failure:
11624         err = -ENOBUFS;
11625  free_msg:
11626         nlmsg_free(msg);
11627         return err;
11628 }
11629
11630 static const struct nla_policy
11631 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11632         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11633         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11634         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11635         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11636         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11637         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11638         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11639 };
11640
11641 static int nl80211_set_cqm_txe(struct genl_info *info,
11642                                u32 rate, u32 pkts, u32 intvl)
11643 {
11644         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11645         struct net_device *dev = info->user_ptr[1];
11646         struct wireless_dev *wdev = dev->ieee80211_ptr;
11647
11648         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11649                 return -EINVAL;
11650
11651         if (!rdev->ops->set_cqm_txe_config)
11652                 return -EOPNOTSUPP;
11653
11654         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11655             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11656                 return -EOPNOTSUPP;
11657
11658         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11659 }
11660
11661 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11662                                     struct net_device *dev)
11663 {
11664         struct wireless_dev *wdev = dev->ieee80211_ptr;
11665         s32 last, low, high;
11666         u32 hyst;
11667         int i, n, low_index;
11668         int err;
11669
11670         /* RSSI reporting disabled? */
11671         if (!wdev->cqm_config)
11672                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11673
11674         /*
11675          * Obtain current RSSI value if possible, if not and no RSSI threshold
11676          * event has been received yet, we should receive an event after a
11677          * connection is established and enough beacons received to calculate
11678          * the average.
11679          */
11680         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11681             rdev->ops->get_station) {
11682                 struct station_info sinfo = {};
11683                 u8 *mac_addr;
11684
11685                 mac_addr = wdev->current_bss->pub.bssid;
11686
11687                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11688                 if (err)
11689                         return err;
11690
11691                 cfg80211_sinfo_release_content(&sinfo);
11692                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11693                         wdev->cqm_config->last_rssi_event_value =
11694                                 (s8) sinfo.rx_beacon_signal_avg;
11695         }
11696
11697         last = wdev->cqm_config->last_rssi_event_value;
11698         hyst = wdev->cqm_config->rssi_hyst;
11699         n = wdev->cqm_config->n_rssi_thresholds;
11700
11701         for (i = 0; i < n; i++) {
11702                 i = array_index_nospec(i, n);
11703                 if (last < wdev->cqm_config->rssi_thresholds[i])
11704                         break;
11705         }
11706
11707         low_index = i - 1;
11708         if (low_index >= 0) {
11709                 low_index = array_index_nospec(low_index, n);
11710                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11711         } else {
11712                 low = S32_MIN;
11713         }
11714         if (i < n) {
11715                 i = array_index_nospec(i, n);
11716                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11717         } else {
11718                 high = S32_MAX;
11719         }
11720
11721         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11722 }
11723
11724 static int nl80211_set_cqm_rssi(struct genl_info *info,
11725                                 const s32 *thresholds, int n_thresholds,
11726                                 u32 hysteresis)
11727 {
11728         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11729         struct net_device *dev = info->user_ptr[1];
11730         struct wireless_dev *wdev = dev->ieee80211_ptr;
11731         int i, err;
11732         s32 prev = S32_MIN;
11733
11734         /* Check all values negative and sorted */
11735         for (i = 0; i < n_thresholds; i++) {
11736                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11737                         return -EINVAL;
11738
11739                 prev = thresholds[i];
11740         }
11741
11742         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11743             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11744                 return -EOPNOTSUPP;
11745
11746         wdev_lock(wdev);
11747         cfg80211_cqm_config_free(wdev);
11748         wdev_unlock(wdev);
11749
11750         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11751                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11752                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11753
11754                 return rdev_set_cqm_rssi_config(rdev, dev,
11755                                                 thresholds[0], hysteresis);
11756         }
11757
11758         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11759                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11760                 return -EOPNOTSUPP;
11761
11762         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11763                 n_thresholds = 0;
11764
11765         wdev_lock(wdev);
11766         if (n_thresholds) {
11767                 struct cfg80211_cqm_config *cqm_config;
11768
11769                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11770                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11771                 if (!cqm_config) {
11772                         err = -ENOMEM;
11773                         goto unlock;
11774                 }
11775
11776                 cqm_config->rssi_hyst = hysteresis;
11777                 cqm_config->n_rssi_thresholds = n_thresholds;
11778                 memcpy(cqm_config->rssi_thresholds, thresholds,
11779                        n_thresholds * sizeof(s32));
11780
11781                 wdev->cqm_config = cqm_config;
11782         }
11783
11784         err = cfg80211_cqm_rssi_update(rdev, dev);
11785
11786 unlock:
11787         wdev_unlock(wdev);
11788
11789         return err;
11790 }
11791
11792 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11793 {
11794         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11795         struct nlattr *cqm;
11796         int err;
11797
11798         cqm = info->attrs[NL80211_ATTR_CQM];
11799         if (!cqm)
11800                 return -EINVAL;
11801
11802         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11803                                           nl80211_attr_cqm_policy,
11804                                           info->extack);
11805         if (err)
11806                 return err;
11807
11808         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11809             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11810                 const s32 *thresholds =
11811                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11812                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11813                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11814
11815                 if (len % 4)
11816                         return -EINVAL;
11817
11818                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11819                                             hysteresis);
11820         }
11821
11822         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11823             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11824             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11825                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11826                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11827                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11828
11829                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11830         }
11831
11832         return -EINVAL;
11833 }
11834
11835 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11836 {
11837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11838         struct net_device *dev = info->user_ptr[1];
11839         struct ocb_setup setup = {};
11840         int err;
11841
11842         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11843         if (err)
11844                 return err;
11845
11846         return cfg80211_join_ocb(rdev, dev, &setup);
11847 }
11848
11849 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11850 {
11851         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11852         struct net_device *dev = info->user_ptr[1];
11853
11854         return cfg80211_leave_ocb(rdev, dev);
11855 }
11856
11857 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11858 {
11859         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11860         struct net_device *dev = info->user_ptr[1];
11861         struct mesh_config cfg;
11862         struct mesh_setup setup;
11863         int err;
11864
11865         /* start with default */
11866         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11867         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11868
11869         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11870                 /* and parse parameters if given */
11871                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11872                 if (err)
11873                         return err;
11874         }
11875
11876         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11877             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11878                 return -EINVAL;
11879
11880         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11881         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11882
11883         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11884             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11885                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11886                         return -EINVAL;
11887
11888         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11889                 setup.beacon_interval =
11890                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11891
11892                 err = cfg80211_validate_beacon_int(rdev,
11893                                                    NL80211_IFTYPE_MESH_POINT,
11894                                                    setup.beacon_interval);
11895                 if (err)
11896                         return err;
11897         }
11898
11899         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11900                 setup.dtim_period =
11901                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11902                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11903                         return -EINVAL;
11904         }
11905
11906         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11907                 /* parse additional setup parameters if given */
11908                 err = nl80211_parse_mesh_setup(info, &setup);
11909                 if (err)
11910                         return err;
11911         }
11912
11913         if (setup.user_mpm)
11914                 cfg.auto_open_plinks = false;
11915
11916         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11917                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11918                 if (err)
11919                         return err;
11920         } else {
11921                 /* __cfg80211_join_mesh() will sort it out */
11922                 setup.chandef.chan = NULL;
11923         }
11924
11925         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11926                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11927                 int n_rates =
11928                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11929                 struct ieee80211_supported_band *sband;
11930
11931                 if (!setup.chandef.chan)
11932                         return -EINVAL;
11933
11934                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11935
11936                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11937                                              &setup.basic_rates);
11938                 if (err)
11939                         return err;
11940         }
11941
11942         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11943                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11944                                                     NL80211_ATTR_TX_RATES,
11945                                                     &setup.beacon_rate,
11946                                                     dev, false);
11947                 if (err)
11948                         return err;
11949
11950                 if (!setup.chandef.chan)
11951                         return -EINVAL;
11952
11953                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11954                                               &setup.beacon_rate);
11955                 if (err)
11956                         return err;
11957         }
11958
11959         setup.userspace_handles_dfs =
11960                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11961
11962         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11963                 int r = validate_pae_over_nl80211(rdev, info);
11964
11965                 if (r < 0)
11966                         return r;
11967
11968                 setup.control_port_over_nl80211 = true;
11969         }
11970
11971         wdev_lock(dev->ieee80211_ptr);
11972         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11973         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11974                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11975         wdev_unlock(dev->ieee80211_ptr);
11976
11977         return err;
11978 }
11979
11980 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11981 {
11982         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11983         struct net_device *dev = info->user_ptr[1];
11984
11985         return cfg80211_leave_mesh(rdev, dev);
11986 }
11987
11988 #ifdef CONFIG_PM
11989 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11990                                         struct cfg80211_registered_device *rdev)
11991 {
11992         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11993         struct nlattr *nl_pats, *nl_pat;
11994         int i, pat_len;
11995
11996         if (!wowlan->n_patterns)
11997                 return 0;
11998
11999         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
12000         if (!nl_pats)
12001                 return -ENOBUFS;
12002
12003         for (i = 0; i < wowlan->n_patterns; i++) {
12004                 nl_pat = nla_nest_start_noflag(msg, i + 1);
12005                 if (!nl_pat)
12006                         return -ENOBUFS;
12007                 pat_len = wowlan->patterns[i].pattern_len;
12008                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
12009                             wowlan->patterns[i].mask) ||
12010                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12011                             wowlan->patterns[i].pattern) ||
12012                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12013                                 wowlan->patterns[i].pkt_offset))
12014                         return -ENOBUFS;
12015                 nla_nest_end(msg, nl_pat);
12016         }
12017         nla_nest_end(msg, nl_pats);
12018
12019         return 0;
12020 }
12021
12022 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
12023                                    struct cfg80211_wowlan_tcp *tcp)
12024 {
12025         struct nlattr *nl_tcp;
12026
12027         if (!tcp)
12028                 return 0;
12029
12030         nl_tcp = nla_nest_start_noflag(msg,
12031                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12032         if (!nl_tcp)
12033                 return -ENOBUFS;
12034
12035         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12036             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12037             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12038             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12039             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12040             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12041                     tcp->payload_len, tcp->payload) ||
12042             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12043                         tcp->data_interval) ||
12044             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12045                     tcp->wake_len, tcp->wake_data) ||
12046             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12047                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12048                 return -ENOBUFS;
12049
12050         if (tcp->payload_seq.len &&
12051             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12052                     sizeof(tcp->payload_seq), &tcp->payload_seq))
12053                 return -ENOBUFS;
12054
12055         if (tcp->payload_tok.len &&
12056             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12057                     sizeof(tcp->payload_tok) + tcp->tokens_size,
12058                     &tcp->payload_tok))
12059                 return -ENOBUFS;
12060
12061         nla_nest_end(msg, nl_tcp);
12062
12063         return 0;
12064 }
12065
12066 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12067                                   struct cfg80211_sched_scan_request *req)
12068 {
12069         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12070         int i;
12071
12072         if (!req)
12073                 return 0;
12074
12075         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12076         if (!nd)
12077                 return -ENOBUFS;
12078
12079         if (req->n_scan_plans == 1 &&
12080             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12081                         req->scan_plans[0].interval * 1000))
12082                 return -ENOBUFS;
12083
12084         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12085                 return -ENOBUFS;
12086
12087         if (req->relative_rssi_set) {
12088                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12089
12090                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12091                                req->relative_rssi))
12092                         return -ENOBUFS;
12093
12094                 rssi_adjust.band = req->rssi_adjust.band;
12095                 rssi_adjust.delta = req->rssi_adjust.delta;
12096                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
12097                             sizeof(rssi_adjust), &rssi_adjust))
12098                         return -ENOBUFS;
12099         }
12100
12101         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12102         if (!freqs)
12103                 return -ENOBUFS;
12104
12105         for (i = 0; i < req->n_channels; i++) {
12106                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12107                         return -ENOBUFS;
12108         }
12109
12110         nla_nest_end(msg, freqs);
12111
12112         if (req->n_match_sets) {
12113                 matches = nla_nest_start_noflag(msg,
12114                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
12115                 if (!matches)
12116                         return -ENOBUFS;
12117
12118                 for (i = 0; i < req->n_match_sets; i++) {
12119                         match = nla_nest_start_noflag(msg, i);
12120                         if (!match)
12121                                 return -ENOBUFS;
12122
12123                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
12124                                     req->match_sets[i].ssid.ssid_len,
12125                                     req->match_sets[i].ssid.ssid))
12126                                 return -ENOBUFS;
12127                         nla_nest_end(msg, match);
12128                 }
12129                 nla_nest_end(msg, matches);
12130         }
12131
12132         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
12133         if (!scan_plans)
12134                 return -ENOBUFS;
12135
12136         for (i = 0; i < req->n_scan_plans; i++) {
12137                 scan_plan = nla_nest_start_noflag(msg, i + 1);
12138                 if (!scan_plan)
12139                         return -ENOBUFS;
12140
12141                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
12142                                 req->scan_plans[i].interval) ||
12143                     (req->scan_plans[i].iterations &&
12144                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
12145                                  req->scan_plans[i].iterations)))
12146                         return -ENOBUFS;
12147                 nla_nest_end(msg, scan_plan);
12148         }
12149         nla_nest_end(msg, scan_plans);
12150
12151         nla_nest_end(msg, nd);
12152
12153         return 0;
12154 }
12155
12156 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
12157 {
12158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12159         struct sk_buff *msg;
12160         void *hdr;
12161         u32 size = NLMSG_DEFAULT_SIZE;
12162
12163         if (!rdev->wiphy.wowlan)
12164                 return -EOPNOTSUPP;
12165
12166         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
12167                 /* adjust size to have room for all the data */
12168                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
12169                         rdev->wiphy.wowlan_config->tcp->payload_len +
12170                         rdev->wiphy.wowlan_config->tcp->wake_len +
12171                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
12172         }
12173
12174         msg = nlmsg_new(size, GFP_KERNEL);
12175         if (!msg)
12176                 return -ENOMEM;
12177
12178         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12179                              NL80211_CMD_GET_WOWLAN);
12180         if (!hdr)
12181                 goto nla_put_failure;
12182
12183         if (rdev->wiphy.wowlan_config) {
12184                 struct nlattr *nl_wowlan;
12185
12186                 nl_wowlan = nla_nest_start_noflag(msg,
12187                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
12188                 if (!nl_wowlan)
12189                         goto nla_put_failure;
12190
12191                 if ((rdev->wiphy.wowlan_config->any &&
12192                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
12193                     (rdev->wiphy.wowlan_config->disconnect &&
12194                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
12195                     (rdev->wiphy.wowlan_config->magic_pkt &&
12196                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
12197                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
12198                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
12199                     (rdev->wiphy.wowlan_config->eap_identity_req &&
12200                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
12201                     (rdev->wiphy.wowlan_config->four_way_handshake &&
12202                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
12203                     (rdev->wiphy.wowlan_config->rfkill_release &&
12204                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
12205                         goto nla_put_failure;
12206
12207                 if (nl80211_send_wowlan_patterns(msg, rdev))
12208                         goto nla_put_failure;
12209
12210                 if (nl80211_send_wowlan_tcp(msg,
12211                                             rdev->wiphy.wowlan_config->tcp))
12212                         goto nla_put_failure;
12213
12214                 if (nl80211_send_wowlan_nd(
12215                             msg,
12216                             rdev->wiphy.wowlan_config->nd_config))
12217                         goto nla_put_failure;
12218
12219                 nla_nest_end(msg, nl_wowlan);
12220         }
12221
12222         genlmsg_end(msg, hdr);
12223         return genlmsg_reply(msg, info);
12224
12225 nla_put_failure:
12226         nlmsg_free(msg);
12227         return -ENOBUFS;
12228 }
12229
12230 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
12231                                     struct nlattr *attr,
12232                                     struct cfg80211_wowlan *trig)
12233 {
12234         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
12235         struct cfg80211_wowlan_tcp *cfg;
12236         struct nl80211_wowlan_tcp_data_token *tok = NULL;
12237         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
12238         u32 size;
12239         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
12240         int err, port;
12241
12242         if (!rdev->wiphy.wowlan->tcp)
12243                 return -EINVAL;
12244
12245         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12246                                           nl80211_wowlan_tcp_policy, NULL);
12247         if (err)
12248                 return err;
12249
12250         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12251             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12252             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12253             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12254             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12255             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12256             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12257             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12258                 return -EINVAL;
12259
12260         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12261         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12262                 return -EINVAL;
12263
12264         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12265                         rdev->wiphy.wowlan->tcp->data_interval_max ||
12266             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12267                 return -EINVAL;
12268
12269         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12270         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12271                 return -EINVAL;
12272
12273         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12274         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12275                 return -EINVAL;
12276
12277         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12278                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12279
12280                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12281                 tokens_size = tokln - sizeof(*tok);
12282
12283                 if (!tok->len || tokens_size % tok->len)
12284                         return -EINVAL;
12285                 if (!rdev->wiphy.wowlan->tcp->tok)
12286                         return -EINVAL;
12287                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12288                         return -EINVAL;
12289                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12290                         return -EINVAL;
12291                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12292                         return -EINVAL;
12293                 if (tok->offset + tok->len > data_size)
12294                         return -EINVAL;
12295         }
12296
12297         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12298                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12299                 if (!rdev->wiphy.wowlan->tcp->seq)
12300                         return -EINVAL;
12301                 if (seq->len == 0 || seq->len > 4)
12302                         return -EINVAL;
12303                 if (seq->len + seq->offset > data_size)
12304                         return -EINVAL;
12305         }
12306
12307         size = sizeof(*cfg);
12308         size += data_size;
12309         size += wake_size + wake_mask_size;
12310         size += tokens_size;
12311
12312         cfg = kzalloc(size, GFP_KERNEL);
12313         if (!cfg)
12314                 return -ENOMEM;
12315         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12316         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12317         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12318                ETH_ALEN);
12319         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12320                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12321         else
12322                 port = 0;
12323 #ifdef CONFIG_INET
12324         /* allocate a socket and port for it and use it */
12325         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12326                             IPPROTO_TCP, &cfg->sock, 1);
12327         if (err) {
12328                 kfree(cfg);
12329                 return err;
12330         }
12331         if (inet_csk_get_port(cfg->sock->sk, port)) {
12332                 sock_release(cfg->sock);
12333                 kfree(cfg);
12334                 return -EADDRINUSE;
12335         }
12336         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12337 #else
12338         if (!port) {
12339                 kfree(cfg);
12340                 return -EINVAL;
12341         }
12342         cfg->src_port = port;
12343 #endif
12344
12345         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12346         cfg->payload_len = data_size;
12347         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12348         memcpy((void *)cfg->payload,
12349                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12350                data_size);
12351         if (seq)
12352                 cfg->payload_seq = *seq;
12353         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12354         cfg->wake_len = wake_size;
12355         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12356         memcpy((void *)cfg->wake_data,
12357                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12358                wake_size);
12359         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12360                          data_size + wake_size;
12361         memcpy((void *)cfg->wake_mask,
12362                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12363                wake_mask_size);
12364         if (tok) {
12365                 cfg->tokens_size = tokens_size;
12366                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12367         }
12368
12369         trig->tcp = cfg;
12370
12371         return 0;
12372 }
12373
12374 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12375                                    const struct wiphy_wowlan_support *wowlan,
12376                                    struct nlattr *attr,
12377                                    struct cfg80211_wowlan *trig)
12378 {
12379         struct nlattr **tb;
12380         int err;
12381
12382         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12383         if (!tb)
12384                 return -ENOMEM;
12385
12386         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12387                 err = -EOPNOTSUPP;
12388                 goto out;
12389         }
12390
12391         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12392                                           nl80211_policy, NULL);
12393         if (err)
12394                 goto out;
12395
12396         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12397                                                    wowlan->max_nd_match_sets);
12398         err = PTR_ERR_OR_ZERO(trig->nd_config);
12399         if (err)
12400                 trig->nd_config = NULL;
12401
12402 out:
12403         kfree(tb);
12404         return err;
12405 }
12406
12407 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12408 {
12409         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12410         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12411         struct cfg80211_wowlan new_triggers = {};
12412         struct cfg80211_wowlan *ntrig;
12413         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12414         int err, i;
12415         bool prev_enabled = rdev->wiphy.wowlan_config;
12416         bool regular = false;
12417
12418         if (!wowlan)
12419                 return -EOPNOTSUPP;
12420
12421         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12422                 cfg80211_rdev_free_wowlan(rdev);
12423                 rdev->wiphy.wowlan_config = NULL;
12424                 goto set_wakeup;
12425         }
12426
12427         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12428                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12429                                           nl80211_wowlan_policy, info->extack);
12430         if (err)
12431                 return err;
12432
12433         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12434                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12435                         return -EINVAL;
12436                 new_triggers.any = true;
12437         }
12438
12439         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12440                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12441                         return -EINVAL;
12442                 new_triggers.disconnect = true;
12443                 regular = true;
12444         }
12445
12446         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12447                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12448                         return -EINVAL;
12449                 new_triggers.magic_pkt = true;
12450                 regular = true;
12451         }
12452
12453         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12454                 return -EINVAL;
12455
12456         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12457                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12458                         return -EINVAL;
12459                 new_triggers.gtk_rekey_failure = true;
12460                 regular = true;
12461         }
12462
12463         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12464                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12465                         return -EINVAL;
12466                 new_triggers.eap_identity_req = true;
12467                 regular = true;
12468         }
12469
12470         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12471                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12472                         return -EINVAL;
12473                 new_triggers.four_way_handshake = true;
12474                 regular = true;
12475         }
12476
12477         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12478                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12479                         return -EINVAL;
12480                 new_triggers.rfkill_release = true;
12481                 regular = true;
12482         }
12483
12484         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12485                 struct nlattr *pat;
12486                 int n_patterns = 0;
12487                 int rem, pat_len, mask_len, pkt_offset;
12488                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12489
12490                 regular = true;
12491
12492                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12493                                     rem)
12494                         n_patterns++;
12495                 if (n_patterns > wowlan->n_patterns)
12496                         return -EINVAL;
12497
12498                 new_triggers.patterns = kcalloc(n_patterns,
12499                                                 sizeof(new_triggers.patterns[0]),
12500                                                 GFP_KERNEL);
12501                 if (!new_triggers.patterns)
12502                         return -ENOMEM;
12503
12504                 new_triggers.n_patterns = n_patterns;
12505                 i = 0;
12506
12507                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12508                                     rem) {
12509                         u8 *mask_pat;
12510
12511                         err = nla_parse_nested_deprecated(pat_tb,
12512                                                           MAX_NL80211_PKTPAT,
12513                                                           pat,
12514                                                           nl80211_packet_pattern_policy,
12515                                                           info->extack);
12516                         if (err)
12517                                 goto error;
12518
12519                         err = -EINVAL;
12520                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
12521                             !pat_tb[NL80211_PKTPAT_PATTERN])
12522                                 goto error;
12523                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12524                         mask_len = DIV_ROUND_UP(pat_len, 8);
12525                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12526                                 goto error;
12527                         if (pat_len > wowlan->pattern_max_len ||
12528                             pat_len < wowlan->pattern_min_len)
12529                                 goto error;
12530
12531                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
12532                                 pkt_offset = 0;
12533                         else
12534                                 pkt_offset = nla_get_u32(
12535                                         pat_tb[NL80211_PKTPAT_OFFSET]);
12536                         if (pkt_offset > wowlan->max_pkt_offset)
12537                                 goto error;
12538                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12539
12540                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12541                         if (!mask_pat) {
12542                                 err = -ENOMEM;
12543                                 goto error;
12544                         }
12545                         new_triggers.patterns[i].mask = mask_pat;
12546                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12547                                mask_len);
12548                         mask_pat += mask_len;
12549                         new_triggers.patterns[i].pattern = mask_pat;
12550                         new_triggers.patterns[i].pattern_len = pat_len;
12551                         memcpy(mask_pat,
12552                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12553                                pat_len);
12554                         i++;
12555                 }
12556         }
12557
12558         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12559                 regular = true;
12560                 err = nl80211_parse_wowlan_tcp(
12561                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12562                         &new_triggers);
12563                 if (err)
12564                         goto error;
12565         }
12566
12567         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12568                 regular = true;
12569                 err = nl80211_parse_wowlan_nd(
12570                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12571                         &new_triggers);
12572                 if (err)
12573                         goto error;
12574         }
12575
12576         /* The 'any' trigger means the device continues operating more or less
12577          * as in its normal operation mode and wakes up the host on most of the
12578          * normal interrupts (like packet RX, ...)
12579          * It therefore makes little sense to combine with the more constrained
12580          * wakeup trigger modes.
12581          */
12582         if (new_triggers.any && regular) {
12583                 err = -EINVAL;
12584                 goto error;
12585         }
12586
12587         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12588         if (!ntrig) {
12589                 err = -ENOMEM;
12590                 goto error;
12591         }
12592         cfg80211_rdev_free_wowlan(rdev);
12593         rdev->wiphy.wowlan_config = ntrig;
12594
12595  set_wakeup:
12596         if (rdev->ops->set_wakeup &&
12597             prev_enabled != !!rdev->wiphy.wowlan_config)
12598                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12599
12600         return 0;
12601  error:
12602         for (i = 0; i < new_triggers.n_patterns; i++)
12603                 kfree(new_triggers.patterns[i].mask);
12604         kfree(new_triggers.patterns);
12605         if (new_triggers.tcp && new_triggers.tcp->sock)
12606                 sock_release(new_triggers.tcp->sock);
12607         kfree(new_triggers.tcp);
12608         kfree(new_triggers.nd_config);
12609         return err;
12610 }
12611 #endif
12612
12613 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12614                                        struct cfg80211_registered_device *rdev)
12615 {
12616         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12617         int i, j, pat_len;
12618         struct cfg80211_coalesce_rules *rule;
12619
12620         if (!rdev->coalesce->n_rules)
12621                 return 0;
12622
12623         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12624         if (!nl_rules)
12625                 return -ENOBUFS;
12626
12627         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12628                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12629                 if (!nl_rule)
12630                         return -ENOBUFS;
12631
12632                 rule = &rdev->coalesce->rules[i];
12633                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12634                                 rule->delay))
12635                         return -ENOBUFS;
12636
12637                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12638                                 rule->condition))
12639                         return -ENOBUFS;
12640
12641                 nl_pats = nla_nest_start_noflag(msg,
12642                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12643                 if (!nl_pats)
12644                         return -ENOBUFS;
12645
12646                 for (j = 0; j < rule->n_patterns; j++) {
12647                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12648                         if (!nl_pat)
12649                                 return -ENOBUFS;
12650                         pat_len = rule->patterns[j].pattern_len;
12651                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12652                                     DIV_ROUND_UP(pat_len, 8),
12653                                     rule->patterns[j].mask) ||
12654                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12655                                     rule->patterns[j].pattern) ||
12656                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12657                                         rule->patterns[j].pkt_offset))
12658                                 return -ENOBUFS;
12659                         nla_nest_end(msg, nl_pat);
12660                 }
12661                 nla_nest_end(msg, nl_pats);
12662                 nla_nest_end(msg, nl_rule);
12663         }
12664         nla_nest_end(msg, nl_rules);
12665
12666         return 0;
12667 }
12668
12669 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12670 {
12671         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12672         struct sk_buff *msg;
12673         void *hdr;
12674
12675         if (!rdev->wiphy.coalesce)
12676                 return -EOPNOTSUPP;
12677
12678         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12679         if (!msg)
12680                 return -ENOMEM;
12681
12682         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12683                              NL80211_CMD_GET_COALESCE);
12684         if (!hdr)
12685                 goto nla_put_failure;
12686
12687         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12688                 goto nla_put_failure;
12689
12690         genlmsg_end(msg, hdr);
12691         return genlmsg_reply(msg, info);
12692
12693 nla_put_failure:
12694         nlmsg_free(msg);
12695         return -ENOBUFS;
12696 }
12697
12698 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12699 {
12700         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12701         int i, j;
12702         struct cfg80211_coalesce_rules *rule;
12703
12704         if (!coalesce)
12705                 return;
12706
12707         for (i = 0; i < coalesce->n_rules; i++) {
12708                 rule = &coalesce->rules[i];
12709                 for (j = 0; j < rule->n_patterns; j++)
12710                         kfree(rule->patterns[j].mask);
12711                 kfree(rule->patterns);
12712         }
12713         kfree(coalesce->rules);
12714         kfree(coalesce);
12715         rdev->coalesce = NULL;
12716 }
12717
12718 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12719                                        struct nlattr *rule,
12720                                        struct cfg80211_coalesce_rules *new_rule)
12721 {
12722         int err, i;
12723         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12724         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12725         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12726         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12727
12728         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12729                                           rule, nl80211_coalesce_policy, NULL);
12730         if (err)
12731                 return err;
12732
12733         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12734                 new_rule->delay =
12735                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12736         if (new_rule->delay > coalesce->max_delay)
12737                 return -EINVAL;
12738
12739         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12740                 new_rule->condition =
12741                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12742
12743         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12744                 return -EINVAL;
12745
12746         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12747                             rem)
12748                 n_patterns++;
12749         if (n_patterns > coalesce->n_patterns)
12750                 return -EINVAL;
12751
12752         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12753                                      GFP_KERNEL);
12754         if (!new_rule->patterns)
12755                 return -ENOMEM;
12756
12757         new_rule->n_patterns = n_patterns;
12758         i = 0;
12759
12760         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12761                             rem) {
12762                 u8 *mask_pat;
12763
12764                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12765                                                   pat,
12766                                                   nl80211_packet_pattern_policy,
12767                                                   NULL);
12768                 if (err)
12769                         return err;
12770
12771                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12772                     !pat_tb[NL80211_PKTPAT_PATTERN])
12773                         return -EINVAL;
12774                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12775                 mask_len = DIV_ROUND_UP(pat_len, 8);
12776                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12777                         return -EINVAL;
12778                 if (pat_len > coalesce->pattern_max_len ||
12779                     pat_len < coalesce->pattern_min_len)
12780                         return -EINVAL;
12781
12782                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12783                         pkt_offset = 0;
12784                 else
12785                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12786                 if (pkt_offset > coalesce->max_pkt_offset)
12787                         return -EINVAL;
12788                 new_rule->patterns[i].pkt_offset = pkt_offset;
12789
12790                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12791                 if (!mask_pat)
12792                         return -ENOMEM;
12793
12794                 new_rule->patterns[i].mask = mask_pat;
12795                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12796                        mask_len);
12797
12798                 mask_pat += mask_len;
12799                 new_rule->patterns[i].pattern = mask_pat;
12800                 new_rule->patterns[i].pattern_len = pat_len;
12801                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12802                        pat_len);
12803                 i++;
12804         }
12805
12806         return 0;
12807 }
12808
12809 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12810 {
12811         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12812         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12813         struct cfg80211_coalesce new_coalesce = {};
12814         struct cfg80211_coalesce *n_coalesce;
12815         int err, rem_rule, n_rules = 0, i, j;
12816         struct nlattr *rule;
12817         struct cfg80211_coalesce_rules *tmp_rule;
12818
12819         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12820                 return -EOPNOTSUPP;
12821
12822         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12823                 cfg80211_rdev_free_coalesce(rdev);
12824                 rdev_set_coalesce(rdev, NULL);
12825                 return 0;
12826         }
12827
12828         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12829                             rem_rule)
12830                 n_rules++;
12831         if (n_rules > coalesce->n_rules)
12832                 return -EINVAL;
12833
12834         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12835                                      GFP_KERNEL);
12836         if (!new_coalesce.rules)
12837                 return -ENOMEM;
12838
12839         new_coalesce.n_rules = n_rules;
12840         i = 0;
12841
12842         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12843                             rem_rule) {
12844                 err = nl80211_parse_coalesce_rule(rdev, rule,
12845                                                   &new_coalesce.rules[i]);
12846                 if (err)
12847                         goto error;
12848
12849                 i++;
12850         }
12851
12852         err = rdev_set_coalesce(rdev, &new_coalesce);
12853         if (err)
12854                 goto error;
12855
12856         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12857         if (!n_coalesce) {
12858                 err = -ENOMEM;
12859                 goto error;
12860         }
12861         cfg80211_rdev_free_coalesce(rdev);
12862         rdev->coalesce = n_coalesce;
12863
12864         return 0;
12865 error:
12866         for (i = 0; i < new_coalesce.n_rules; i++) {
12867                 tmp_rule = &new_coalesce.rules[i];
12868                 for (j = 0; j < tmp_rule->n_patterns; j++)
12869                         kfree(tmp_rule->patterns[j].mask);
12870                 kfree(tmp_rule->patterns);
12871         }
12872         kfree(new_coalesce.rules);
12873
12874         return err;
12875 }
12876
12877 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12878 {
12879         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12880         struct net_device *dev = info->user_ptr[1];
12881         struct wireless_dev *wdev = dev->ieee80211_ptr;
12882         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12883         struct cfg80211_gtk_rekey_data rekey_data = {};
12884         int err;
12885
12886         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12887                 return -EINVAL;
12888
12889         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12890                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12891                                           nl80211_rekey_policy, info->extack);
12892         if (err)
12893                 return err;
12894
12895         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12896             !tb[NL80211_REKEY_DATA_KCK])
12897                 return -EINVAL;
12898         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12899             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12900               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12901                 return -ERANGE;
12902         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12903             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12904               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12905                 return -ERANGE;
12906
12907         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12908         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12909         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12910         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12911         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12912         if (tb[NL80211_REKEY_DATA_AKM])
12913                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12914
12915         wdev_lock(wdev);
12916         if (!wdev->current_bss) {
12917                 err = -ENOTCONN;
12918                 goto out;
12919         }
12920
12921         if (!rdev->ops->set_rekey_data) {
12922                 err = -EOPNOTSUPP;
12923                 goto out;
12924         }
12925
12926         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12927  out:
12928         wdev_unlock(wdev);
12929         return err;
12930 }
12931
12932 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12933                                              struct genl_info *info)
12934 {
12935         struct net_device *dev = info->user_ptr[1];
12936         struct wireless_dev *wdev = dev->ieee80211_ptr;
12937
12938         if (wdev->iftype != NL80211_IFTYPE_AP &&
12939             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12940                 return -EINVAL;
12941
12942         if (wdev->ap_unexpected_nlportid)
12943                 return -EBUSY;
12944
12945         wdev->ap_unexpected_nlportid = info->snd_portid;
12946         return 0;
12947 }
12948
12949 static int nl80211_probe_client(struct sk_buff *skb,
12950                                 struct genl_info *info)
12951 {
12952         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12953         struct net_device *dev = info->user_ptr[1];
12954         struct wireless_dev *wdev = dev->ieee80211_ptr;
12955         struct sk_buff *msg;
12956         void *hdr;
12957         const u8 *addr;
12958         u64 cookie;
12959         int err;
12960
12961         if (wdev->iftype != NL80211_IFTYPE_AP &&
12962             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12963                 return -EOPNOTSUPP;
12964
12965         if (!info->attrs[NL80211_ATTR_MAC])
12966                 return -EINVAL;
12967
12968         if (!rdev->ops->probe_client)
12969                 return -EOPNOTSUPP;
12970
12971         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12972         if (!msg)
12973                 return -ENOMEM;
12974
12975         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12976                              NL80211_CMD_PROBE_CLIENT);
12977         if (!hdr) {
12978                 err = -ENOBUFS;
12979                 goto free_msg;
12980         }
12981
12982         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12983
12984         err = rdev_probe_client(rdev, dev, addr, &cookie);
12985         if (err)
12986                 goto free_msg;
12987
12988         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12989                               NL80211_ATTR_PAD))
12990                 goto nla_put_failure;
12991
12992         genlmsg_end(msg, hdr);
12993
12994         return genlmsg_reply(msg, info);
12995
12996  nla_put_failure:
12997         err = -ENOBUFS;
12998  free_msg:
12999         nlmsg_free(msg);
13000         return err;
13001 }
13002
13003 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
13004 {
13005         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13006         struct cfg80211_beacon_registration *reg, *nreg;
13007         int rv;
13008
13009         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
13010                 return -EOPNOTSUPP;
13011
13012         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
13013         if (!nreg)
13014                 return -ENOMEM;
13015
13016         /* First, check if already registered. */
13017         spin_lock_bh(&rdev->beacon_registrations_lock);
13018         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13019                 if (reg->nlportid == info->snd_portid) {
13020                         rv = -EALREADY;
13021                         goto out_err;
13022                 }
13023         }
13024         /* Add it to the list */
13025         nreg->nlportid = info->snd_portid;
13026         list_add(&nreg->list, &rdev->beacon_registrations);
13027
13028         spin_unlock_bh(&rdev->beacon_registrations_lock);
13029
13030         return 0;
13031 out_err:
13032         spin_unlock_bh(&rdev->beacon_registrations_lock);
13033         kfree(nreg);
13034         return rv;
13035 }
13036
13037 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13038 {
13039         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13040         struct wireless_dev *wdev = info->user_ptr[1];
13041         int err;
13042
13043         if (!rdev->ops->start_p2p_device)
13044                 return -EOPNOTSUPP;
13045
13046         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13047                 return -EOPNOTSUPP;
13048
13049         if (wdev_running(wdev))
13050                 return 0;
13051
13052         if (rfkill_blocked(rdev->wiphy.rfkill))
13053                 return -ERFKILL;
13054
13055         err = rdev_start_p2p_device(rdev, wdev);
13056         if (err)
13057                 return err;
13058
13059         wdev->is_running = true;
13060         rdev->opencount++;
13061
13062         return 0;
13063 }
13064
13065 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13066 {
13067         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13068         struct wireless_dev *wdev = info->user_ptr[1];
13069
13070         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13071                 return -EOPNOTSUPP;
13072
13073         if (!rdev->ops->stop_p2p_device)
13074                 return -EOPNOTSUPP;
13075
13076         cfg80211_stop_p2p_device(rdev, wdev);
13077
13078         return 0;
13079 }
13080
13081 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13082 {
13083         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13084         struct wireless_dev *wdev = info->user_ptr[1];
13085         struct cfg80211_nan_conf conf = {};
13086         int err;
13087
13088         if (wdev->iftype != NL80211_IFTYPE_NAN)
13089                 return -EOPNOTSUPP;
13090
13091         if (wdev_running(wdev))
13092                 return -EEXIST;
13093
13094         if (rfkill_blocked(rdev->wiphy.rfkill))
13095                 return -ERFKILL;
13096
13097         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
13098                 return -EINVAL;
13099
13100         conf.master_pref =
13101                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13102
13103         if (info->attrs[NL80211_ATTR_BANDS]) {
13104                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13105
13106                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13107                         return -EOPNOTSUPP;
13108
13109                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13110                         return -EINVAL;
13111
13112                 conf.bands = bands;
13113         }
13114
13115         err = rdev_start_nan(rdev, wdev, &conf);
13116         if (err)
13117                 return err;
13118
13119         wdev->is_running = true;
13120         rdev->opencount++;
13121
13122         return 0;
13123 }
13124
13125 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
13126 {
13127         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13128         struct wireless_dev *wdev = info->user_ptr[1];
13129
13130         if (wdev->iftype != NL80211_IFTYPE_NAN)
13131                 return -EOPNOTSUPP;
13132
13133         cfg80211_stop_nan(rdev, wdev);
13134
13135         return 0;
13136 }
13137
13138 static int validate_nan_filter(struct nlattr *filter_attr)
13139 {
13140         struct nlattr *attr;
13141         int len = 0, n_entries = 0, rem;
13142
13143         nla_for_each_nested(attr, filter_attr, rem) {
13144                 len += nla_len(attr);
13145                 n_entries++;
13146         }
13147
13148         if (len >= U8_MAX)
13149                 return -EINVAL;
13150
13151         return n_entries;
13152 }
13153
13154 static int handle_nan_filter(struct nlattr *attr_filter,
13155                              struct cfg80211_nan_func *func,
13156                              bool tx)
13157 {
13158         struct nlattr *attr;
13159         int n_entries, rem, i;
13160         struct cfg80211_nan_func_filter *filter;
13161
13162         n_entries = validate_nan_filter(attr_filter);
13163         if (n_entries < 0)
13164                 return n_entries;
13165
13166         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
13167
13168         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
13169         if (!filter)
13170                 return -ENOMEM;
13171
13172         i = 0;
13173         nla_for_each_nested(attr, attr_filter, rem) {
13174                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
13175                 filter[i].len = nla_len(attr);
13176                 i++;
13177         }
13178         if (tx) {
13179                 func->num_tx_filters = n_entries;
13180                 func->tx_filters = filter;
13181         } else {
13182                 func->num_rx_filters = n_entries;
13183                 func->rx_filters = filter;
13184         }
13185
13186         return 0;
13187 }
13188
13189 static int nl80211_nan_add_func(struct sk_buff *skb,
13190                                 struct genl_info *info)
13191 {
13192         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13193         struct wireless_dev *wdev = info->user_ptr[1];
13194         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
13195         struct cfg80211_nan_func *func;
13196         struct sk_buff *msg = NULL;
13197         void *hdr = NULL;
13198         int err = 0;
13199
13200         if (wdev->iftype != NL80211_IFTYPE_NAN)
13201                 return -EOPNOTSUPP;
13202
13203         if (!wdev_running(wdev))
13204                 return -ENOTCONN;
13205
13206         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
13207                 return -EINVAL;
13208
13209         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
13210                                           info->attrs[NL80211_ATTR_NAN_FUNC],
13211                                           nl80211_nan_func_policy,
13212                                           info->extack);
13213         if (err)
13214                 return err;
13215
13216         func = kzalloc(sizeof(*func), GFP_KERNEL);
13217         if (!func)
13218                 return -ENOMEM;
13219
13220         func->cookie = cfg80211_assign_cookie(rdev);
13221
13222         if (!tb[NL80211_NAN_FUNC_TYPE]) {
13223                 err = -EINVAL;
13224                 goto out;
13225         }
13226
13227
13228         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
13229
13230         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
13231                 err = -EINVAL;
13232                 goto out;
13233         }
13234
13235         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
13236                sizeof(func->service_id));
13237
13238         func->close_range =
13239                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
13240
13241         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13242                 func->serv_spec_info_len =
13243                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13244                 func->serv_spec_info =
13245                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13246                                 func->serv_spec_info_len,
13247                                 GFP_KERNEL);
13248                 if (!func->serv_spec_info) {
13249                         err = -ENOMEM;
13250                         goto out;
13251                 }
13252         }
13253
13254         if (tb[NL80211_NAN_FUNC_TTL])
13255                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13256
13257         switch (func->type) {
13258         case NL80211_NAN_FUNC_PUBLISH:
13259                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13260                         err = -EINVAL;
13261                         goto out;
13262                 }
13263
13264                 func->publish_type =
13265                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13266                 func->publish_bcast =
13267                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13268
13269                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13270                         func->publish_bcast) {
13271                         err = -EINVAL;
13272                         goto out;
13273                 }
13274                 break;
13275         case NL80211_NAN_FUNC_SUBSCRIBE:
13276                 func->subscribe_active =
13277                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13278                 break;
13279         case NL80211_NAN_FUNC_FOLLOW_UP:
13280                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13281                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13282                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13283                         err = -EINVAL;
13284                         goto out;
13285                 }
13286
13287                 func->followup_id =
13288                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13289                 func->followup_reqid =
13290                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13291                 memcpy(func->followup_dest.addr,
13292                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13293                        sizeof(func->followup_dest.addr));
13294                 if (func->ttl) {
13295                         err = -EINVAL;
13296                         goto out;
13297                 }
13298                 break;
13299         default:
13300                 err = -EINVAL;
13301                 goto out;
13302         }
13303
13304         if (tb[NL80211_NAN_FUNC_SRF]) {
13305                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13306
13307                 err = nla_parse_nested_deprecated(srf_tb,
13308                                                   NL80211_NAN_SRF_ATTR_MAX,
13309                                                   tb[NL80211_NAN_FUNC_SRF],
13310                                                   nl80211_nan_srf_policy,
13311                                                   info->extack);
13312                 if (err)
13313                         goto out;
13314
13315                 func->srf_include =
13316                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13317
13318                 if (srf_tb[NL80211_NAN_SRF_BF]) {
13319                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13320                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13321                                 err = -EINVAL;
13322                                 goto out;
13323                         }
13324
13325                         func->srf_bf_len =
13326                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13327                         func->srf_bf =
13328                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13329                                         func->srf_bf_len, GFP_KERNEL);
13330                         if (!func->srf_bf) {
13331                                 err = -ENOMEM;
13332                                 goto out;
13333                         }
13334
13335                         func->srf_bf_idx =
13336                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13337                 } else {
13338                         struct nlattr *attr, *mac_attr =
13339                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13340                         int n_entries, rem, i = 0;
13341
13342                         if (!mac_attr) {
13343                                 err = -EINVAL;
13344                                 goto out;
13345                         }
13346
13347                         n_entries = validate_acl_mac_addrs(mac_attr);
13348                         if (n_entries <= 0) {
13349                                 err = -EINVAL;
13350                                 goto out;
13351                         }
13352
13353                         func->srf_num_macs = n_entries;
13354                         func->srf_macs =
13355                                 kcalloc(n_entries, sizeof(*func->srf_macs),
13356                                         GFP_KERNEL);
13357                         if (!func->srf_macs) {
13358                                 err = -ENOMEM;
13359                                 goto out;
13360                         }
13361
13362                         nla_for_each_nested(attr, mac_attr, rem)
13363                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13364                                        sizeof(*func->srf_macs));
13365                 }
13366         }
13367
13368         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13369                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13370                                         func, true);
13371                 if (err)
13372                         goto out;
13373         }
13374
13375         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13376                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13377                                         func, false);
13378                 if (err)
13379                         goto out;
13380         }
13381
13382         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13383         if (!msg) {
13384                 err = -ENOMEM;
13385                 goto out;
13386         }
13387
13388         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13389                              NL80211_CMD_ADD_NAN_FUNCTION);
13390         /* This can't really happen - we just allocated 4KB */
13391         if (WARN_ON(!hdr)) {
13392                 err = -ENOMEM;
13393                 goto out;
13394         }
13395
13396         err = rdev_add_nan_func(rdev, wdev, func);
13397 out:
13398         if (err < 0) {
13399                 cfg80211_free_nan_func(func);
13400                 nlmsg_free(msg);
13401                 return err;
13402         }
13403
13404         /* propagate the instance id and cookie to userspace  */
13405         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13406                               NL80211_ATTR_PAD))
13407                 goto nla_put_failure;
13408
13409         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13410         if (!func_attr)
13411                 goto nla_put_failure;
13412
13413         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13414                        func->instance_id))
13415                 goto nla_put_failure;
13416
13417         nla_nest_end(msg, func_attr);
13418
13419         genlmsg_end(msg, hdr);
13420         return genlmsg_reply(msg, info);
13421
13422 nla_put_failure:
13423         nlmsg_free(msg);
13424         return -ENOBUFS;
13425 }
13426
13427 static int nl80211_nan_del_func(struct sk_buff *skb,
13428                                struct genl_info *info)
13429 {
13430         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13431         struct wireless_dev *wdev = info->user_ptr[1];
13432         u64 cookie;
13433
13434         if (wdev->iftype != NL80211_IFTYPE_NAN)
13435                 return -EOPNOTSUPP;
13436
13437         if (!wdev_running(wdev))
13438                 return -ENOTCONN;
13439
13440         if (!info->attrs[NL80211_ATTR_COOKIE])
13441                 return -EINVAL;
13442
13443         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13444
13445         rdev_del_nan_func(rdev, wdev, cookie);
13446
13447         return 0;
13448 }
13449
13450 static int nl80211_nan_change_config(struct sk_buff *skb,
13451                                      struct genl_info *info)
13452 {
13453         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13454         struct wireless_dev *wdev = info->user_ptr[1];
13455         struct cfg80211_nan_conf conf = {};
13456         u32 changed = 0;
13457
13458         if (wdev->iftype != NL80211_IFTYPE_NAN)
13459                 return -EOPNOTSUPP;
13460
13461         if (!wdev_running(wdev))
13462                 return -ENOTCONN;
13463
13464         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13465                 conf.master_pref =
13466                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13467                 if (conf.master_pref <= 1 || conf.master_pref == 255)
13468                         return -EINVAL;
13469
13470                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13471         }
13472
13473         if (info->attrs[NL80211_ATTR_BANDS]) {
13474                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13475
13476                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13477                         return -EOPNOTSUPP;
13478
13479                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13480                         return -EINVAL;
13481
13482                 conf.bands = bands;
13483                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13484         }
13485
13486         if (!changed)
13487                 return -EINVAL;
13488
13489         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13490 }
13491
13492 void cfg80211_nan_match(struct wireless_dev *wdev,
13493                         struct cfg80211_nan_match_params *match, gfp_t gfp)
13494 {
13495         struct wiphy *wiphy = wdev->wiphy;
13496         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13497         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13498         struct sk_buff *msg;
13499         void *hdr;
13500
13501         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13502                 return;
13503
13504         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13505         if (!msg)
13506                 return;
13507
13508         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13509         if (!hdr) {
13510                 nlmsg_free(msg);
13511                 return;
13512         }
13513
13514         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13515             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13516                                          wdev->netdev->ifindex)) ||
13517             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13518                               NL80211_ATTR_PAD))
13519                 goto nla_put_failure;
13520
13521         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13522                               NL80211_ATTR_PAD) ||
13523             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13524                 goto nla_put_failure;
13525
13526         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13527         if (!match_attr)
13528                 goto nla_put_failure;
13529
13530         local_func_attr = nla_nest_start_noflag(msg,
13531                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
13532         if (!local_func_attr)
13533                 goto nla_put_failure;
13534
13535         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13536                 goto nla_put_failure;
13537
13538         nla_nest_end(msg, local_func_attr);
13539
13540         peer_func_attr = nla_nest_start_noflag(msg,
13541                                                NL80211_NAN_MATCH_FUNC_PEER);
13542         if (!peer_func_attr)
13543                 goto nla_put_failure;
13544
13545         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13546             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13547                 goto nla_put_failure;
13548
13549         if (match->info && match->info_len &&
13550             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13551                     match->info))
13552                 goto nla_put_failure;
13553
13554         nla_nest_end(msg, peer_func_attr);
13555         nla_nest_end(msg, match_attr);
13556         genlmsg_end(msg, hdr);
13557
13558         if (!wdev->owner_nlportid)
13559                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13560                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13561         else
13562                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13563                                 wdev->owner_nlportid);
13564
13565         return;
13566
13567 nla_put_failure:
13568         nlmsg_free(msg);
13569 }
13570 EXPORT_SYMBOL(cfg80211_nan_match);
13571
13572 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13573                                   u8 inst_id,
13574                                   enum nl80211_nan_func_term_reason reason,
13575                                   u64 cookie, gfp_t gfp)
13576 {
13577         struct wiphy *wiphy = wdev->wiphy;
13578         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13579         struct sk_buff *msg;
13580         struct nlattr *func_attr;
13581         void *hdr;
13582
13583         if (WARN_ON(!inst_id))
13584                 return;
13585
13586         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13587         if (!msg)
13588                 return;
13589
13590         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13591         if (!hdr) {
13592                 nlmsg_free(msg);
13593                 return;
13594         }
13595
13596         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13597             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13598                                          wdev->netdev->ifindex)) ||
13599             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13600                               NL80211_ATTR_PAD))
13601                 goto nla_put_failure;
13602
13603         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13604                               NL80211_ATTR_PAD))
13605                 goto nla_put_failure;
13606
13607         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13608         if (!func_attr)
13609                 goto nla_put_failure;
13610
13611         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13612             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13613                 goto nla_put_failure;
13614
13615         nla_nest_end(msg, func_attr);
13616         genlmsg_end(msg, hdr);
13617
13618         if (!wdev->owner_nlportid)
13619                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13620                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13621         else
13622                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13623                                 wdev->owner_nlportid);
13624
13625         return;
13626
13627 nla_put_failure:
13628         nlmsg_free(msg);
13629 }
13630 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13631
13632 static int nl80211_get_protocol_features(struct sk_buff *skb,
13633                                          struct genl_info *info)
13634 {
13635         void *hdr;
13636         struct sk_buff *msg;
13637
13638         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13639         if (!msg)
13640                 return -ENOMEM;
13641
13642         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13643                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13644         if (!hdr)
13645                 goto nla_put_failure;
13646
13647         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13648                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13649                 goto nla_put_failure;
13650
13651         genlmsg_end(msg, hdr);
13652         return genlmsg_reply(msg, info);
13653
13654  nla_put_failure:
13655         kfree_skb(msg);
13656         return -ENOBUFS;
13657 }
13658
13659 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13660 {
13661         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13662         struct cfg80211_update_ft_ies_params ft_params;
13663         struct net_device *dev = info->user_ptr[1];
13664
13665         if (!rdev->ops->update_ft_ies)
13666                 return -EOPNOTSUPP;
13667
13668         if (!info->attrs[NL80211_ATTR_MDID] ||
13669             !info->attrs[NL80211_ATTR_IE])
13670                 return -EINVAL;
13671
13672         memset(&ft_params, 0, sizeof(ft_params));
13673         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13674         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13675         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13676
13677         return rdev_update_ft_ies(rdev, dev, &ft_params);
13678 }
13679
13680 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13681                                        struct genl_info *info)
13682 {
13683         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13684         struct wireless_dev *wdev = info->user_ptr[1];
13685         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13686         u16 duration;
13687         int ret;
13688
13689         if (!rdev->ops->crit_proto_start)
13690                 return -EOPNOTSUPP;
13691
13692         if (WARN_ON(!rdev->ops->crit_proto_stop))
13693                 return -EINVAL;
13694
13695         if (rdev->crit_proto_nlportid)
13696                 return -EBUSY;
13697
13698         /* determine protocol if provided */
13699         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13700                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13701
13702         if (proto >= NUM_NL80211_CRIT_PROTO)
13703                 return -EINVAL;
13704
13705         /* timeout must be provided */
13706         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13707                 return -EINVAL;
13708
13709         duration =
13710                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13711
13712         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13713         if (!ret)
13714                 rdev->crit_proto_nlportid = info->snd_portid;
13715
13716         return ret;
13717 }
13718
13719 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13720                                       struct genl_info *info)
13721 {
13722         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13723         struct wireless_dev *wdev = info->user_ptr[1];
13724
13725         if (!rdev->ops->crit_proto_stop)
13726                 return -EOPNOTSUPP;
13727
13728         if (rdev->crit_proto_nlportid) {
13729                 rdev->crit_proto_nlportid = 0;
13730                 rdev_crit_proto_stop(rdev, wdev);
13731         }
13732         return 0;
13733 }
13734
13735 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13736                                        struct nlattr *attr,
13737                                        struct netlink_ext_ack *extack)
13738 {
13739         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13740                 if (attr->nla_type & NLA_F_NESTED) {
13741                         NL_SET_ERR_MSG_ATTR(extack, attr,
13742                                             "unexpected nested data");
13743                         return -EINVAL;
13744                 }
13745
13746                 return 0;
13747         }
13748
13749         if (!(attr->nla_type & NLA_F_NESTED)) {
13750                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13751                 return -EINVAL;
13752         }
13753
13754         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13755 }
13756
13757 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13758 {
13759         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13760         struct wireless_dev *wdev =
13761                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
13762                                            info->attrs);
13763         int i, err;
13764         u32 vid, subcmd;
13765
13766         if (!rdev->wiphy.vendor_commands)
13767                 return -EOPNOTSUPP;
13768
13769         if (IS_ERR(wdev)) {
13770                 err = PTR_ERR(wdev);
13771                 if (err != -EINVAL)
13772                         return err;
13773                 wdev = NULL;
13774         } else if (wdev->wiphy != &rdev->wiphy) {
13775                 return -EINVAL;
13776         }
13777
13778         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13779             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13780                 return -EINVAL;
13781
13782         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13783         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13784         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13785                 const struct wiphy_vendor_command *vcmd;
13786                 void *data = NULL;
13787                 int len = 0;
13788
13789                 vcmd = &rdev->wiphy.vendor_commands[i];
13790
13791                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13792                         continue;
13793
13794                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13795                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13796                         if (!wdev)
13797                                 return -EINVAL;
13798                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13799                             !wdev->netdev)
13800                                 return -EINVAL;
13801
13802                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13803                                 if (!wdev_running(wdev))
13804                                         return -ENETDOWN;
13805                         }
13806                 } else {
13807                         wdev = NULL;
13808                 }
13809
13810                 if (!vcmd->doit)
13811                         return -EOPNOTSUPP;
13812
13813                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13814                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13815                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13816
13817                         err = nl80211_vendor_check_policy(vcmd,
13818                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13819                                         info->extack);
13820                         if (err)
13821                                 return err;
13822                 }
13823
13824                 rdev->cur_cmd_info = info;
13825                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13826                 rdev->cur_cmd_info = NULL;
13827                 return err;
13828         }
13829
13830         return -EOPNOTSUPP;
13831 }
13832
13833 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13834                                        struct netlink_callback *cb,
13835                                        struct cfg80211_registered_device **rdev,
13836                                        struct wireless_dev **wdev)
13837 {
13838         struct nlattr **attrbuf;
13839         u32 vid, subcmd;
13840         unsigned int i;
13841         int vcmd_idx = -1;
13842         int err;
13843         void *data = NULL;
13844         unsigned int data_len = 0;
13845
13846         if (cb->args[0]) {
13847                 /* subtract the 1 again here */
13848                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13849                 struct wireless_dev *tmp;
13850
13851                 if (!wiphy)
13852                         return -ENODEV;
13853                 *rdev = wiphy_to_rdev(wiphy);
13854                 *wdev = NULL;
13855
13856                 if (cb->args[1]) {
13857                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13858                                 if (tmp->identifier == cb->args[1] - 1) {
13859                                         *wdev = tmp;
13860                                         break;
13861                                 }
13862                         }
13863                 }
13864
13865                 /* keep rtnl locked in successful case */
13866                 return 0;
13867         }
13868
13869         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13870         if (!attrbuf)
13871                 return -ENOMEM;
13872
13873         err = nlmsg_parse_deprecated(cb->nlh,
13874                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13875                                      attrbuf, nl80211_fam.maxattr,
13876                                      nl80211_policy, NULL);
13877         if (err)
13878                 goto out;
13879
13880         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13881             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13882                 err = -EINVAL;
13883                 goto out;
13884         }
13885
13886         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
13887         if (IS_ERR(*wdev))
13888                 *wdev = NULL;
13889
13890         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13891         if (IS_ERR(*rdev)) {
13892                 err = PTR_ERR(*rdev);
13893                 goto out;
13894         }
13895
13896         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13897         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13898
13899         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13900                 const struct wiphy_vendor_command *vcmd;
13901
13902                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13903
13904                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13905                         continue;
13906
13907                 if (!vcmd->dumpit) {
13908                         err = -EOPNOTSUPP;
13909                         goto out;
13910                 }
13911
13912                 vcmd_idx = i;
13913                 break;
13914         }
13915
13916         if (vcmd_idx < 0) {
13917                 err = -EOPNOTSUPP;
13918                 goto out;
13919         }
13920
13921         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13922                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13923                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13924
13925                 err = nl80211_vendor_check_policy(
13926                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13927                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13928                                 cb->extack);
13929                 if (err)
13930                         goto out;
13931         }
13932
13933         /* 0 is the first index - add 1 to parse only once */
13934         cb->args[0] = (*rdev)->wiphy_idx + 1;
13935         /* add 1 to know if it was NULL */
13936         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13937         cb->args[2] = vcmd_idx;
13938         cb->args[3] = (unsigned long)data;
13939         cb->args[4] = data_len;
13940
13941         /* keep rtnl locked in successful case */
13942         err = 0;
13943 out:
13944         kfree(attrbuf);
13945         return err;
13946 }
13947
13948 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13949                                    struct netlink_callback *cb)
13950 {
13951         struct cfg80211_registered_device *rdev;
13952         struct wireless_dev *wdev;
13953         unsigned int vcmd_idx;
13954         const struct wiphy_vendor_command *vcmd;
13955         void *data;
13956         int data_len;
13957         int err;
13958         struct nlattr *vendor_data;
13959
13960         rtnl_lock();
13961         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13962         if (err)
13963                 goto out;
13964
13965         vcmd_idx = cb->args[2];
13966         data = (void *)cb->args[3];
13967         data_len = cb->args[4];
13968         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13969
13970         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13971                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13972                 if (!wdev) {
13973                         err = -EINVAL;
13974                         goto out;
13975                 }
13976                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13977                     !wdev->netdev) {
13978                         err = -EINVAL;
13979                         goto out;
13980                 }
13981
13982                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13983                         if (!wdev_running(wdev)) {
13984                                 err = -ENETDOWN;
13985                                 goto out;
13986                         }
13987                 }
13988         }
13989
13990         while (1) {
13991                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13992                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13993                                            NL80211_CMD_VENDOR);
13994                 if (!hdr)
13995                         break;
13996
13997                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13998                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13999                                                wdev_id(wdev),
14000                                                NL80211_ATTR_PAD))) {
14001                         genlmsg_cancel(skb, hdr);
14002                         break;
14003                 }
14004
14005                 vendor_data = nla_nest_start_noflag(skb,
14006                                                     NL80211_ATTR_VENDOR_DATA);
14007                 if (!vendor_data) {
14008                         genlmsg_cancel(skb, hdr);
14009                         break;
14010                 }
14011
14012                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
14013                                    (unsigned long *)&cb->args[5]);
14014                 nla_nest_end(skb, vendor_data);
14015
14016                 if (err == -ENOBUFS || err == -ENOENT) {
14017                         genlmsg_cancel(skb, hdr);
14018                         break;
14019                 } else if (err <= 0) {
14020                         genlmsg_cancel(skb, hdr);
14021                         goto out;
14022                 }
14023
14024                 genlmsg_end(skb, hdr);
14025         }
14026
14027         err = skb->len;
14028  out:
14029         rtnl_unlock();
14030         return err;
14031 }
14032
14033 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14034                                            enum nl80211_commands cmd,
14035                                            enum nl80211_attrs attr,
14036                                            int approxlen)
14037 {
14038         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14039
14040         if (WARN_ON(!rdev->cur_cmd_info))
14041                 return NULL;
14042
14043         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14044                                            rdev->cur_cmd_info->snd_portid,
14045                                            rdev->cur_cmd_info->snd_seq,
14046                                            cmd, attr, NULL, GFP_KERNEL);
14047 }
14048 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14049
14050 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14051 {
14052         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14053         void *hdr = ((void **)skb->cb)[1];
14054         struct nlattr *data = ((void **)skb->cb)[2];
14055
14056         /* clear CB data for netlink core to own from now on */
14057         memset(skb->cb, 0, sizeof(skb->cb));
14058
14059         if (WARN_ON(!rdev->cur_cmd_info)) {
14060                 kfree_skb(skb);
14061                 return -EINVAL;
14062         }
14063
14064         nla_nest_end(skb, data);
14065         genlmsg_end(skb, hdr);
14066         return genlmsg_reply(skb, rdev->cur_cmd_info);
14067 }
14068 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14069
14070 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14071 {
14072         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14073
14074         if (WARN_ON(!rdev->cur_cmd_info))
14075                 return 0;
14076
14077         return rdev->cur_cmd_info->snd_portid;
14078 }
14079 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
14080
14081 static int nl80211_set_qos_map(struct sk_buff *skb,
14082                                struct genl_info *info)
14083 {
14084         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14085         struct cfg80211_qos_map *qos_map = NULL;
14086         struct net_device *dev = info->user_ptr[1];
14087         u8 *pos, len, num_des, des_len, des;
14088         int ret;
14089
14090         if (!rdev->ops->set_qos_map)
14091                 return -EOPNOTSUPP;
14092
14093         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
14094                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
14095                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
14096
14097                 if (len % 2)
14098                         return -EINVAL;
14099
14100                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
14101                 if (!qos_map)
14102                         return -ENOMEM;
14103
14104                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
14105                 if (num_des) {
14106                         des_len = num_des *
14107                                 sizeof(struct cfg80211_dscp_exception);
14108                         memcpy(qos_map->dscp_exception, pos, des_len);
14109                         qos_map->num_des = num_des;
14110                         for (des = 0; des < num_des; des++) {
14111                                 if (qos_map->dscp_exception[des].up > 7) {
14112                                         kfree(qos_map);
14113                                         return -EINVAL;
14114                                 }
14115                         }
14116                         pos += des_len;
14117                 }
14118                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
14119         }
14120
14121         wdev_lock(dev->ieee80211_ptr);
14122         ret = nl80211_key_allowed(dev->ieee80211_ptr);
14123         if (!ret)
14124                 ret = rdev_set_qos_map(rdev, dev, qos_map);
14125         wdev_unlock(dev->ieee80211_ptr);
14126
14127         kfree(qos_map);
14128         return ret;
14129 }
14130
14131 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
14132 {
14133         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14134         struct net_device *dev = info->user_ptr[1];
14135         struct wireless_dev *wdev = dev->ieee80211_ptr;
14136         const u8 *peer;
14137         u8 tsid, up;
14138         u16 admitted_time = 0;
14139         int err;
14140
14141         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
14142                 return -EOPNOTSUPP;
14143
14144         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
14145             !info->attrs[NL80211_ATTR_USER_PRIO])
14146                 return -EINVAL;
14147
14148         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14149         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
14150
14151         /* WMM uses TIDs 0-7 even for TSPEC */
14152         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
14153                 /* TODO: handle 802.11 TSPEC/admission control
14154                  * need more attributes for that (e.g. BA session requirement);
14155                  * change the WMM adminssion test above to allow both then
14156                  */
14157                 return -EINVAL;
14158         }
14159
14160         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14161
14162         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
14163                 admitted_time =
14164                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
14165                 if (!admitted_time)
14166                         return -EINVAL;
14167         }
14168
14169         wdev_lock(wdev);
14170         switch (wdev->iftype) {
14171         case NL80211_IFTYPE_STATION:
14172         case NL80211_IFTYPE_P2P_CLIENT:
14173                 if (wdev->current_bss)
14174                         break;
14175                 err = -ENOTCONN;
14176                 goto out;
14177         default:
14178                 err = -EOPNOTSUPP;
14179                 goto out;
14180         }
14181
14182         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
14183
14184  out:
14185         wdev_unlock(wdev);
14186         return err;
14187 }
14188
14189 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
14190 {
14191         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14192         struct net_device *dev = info->user_ptr[1];
14193         struct wireless_dev *wdev = dev->ieee80211_ptr;
14194         const u8 *peer;
14195         u8 tsid;
14196         int err;
14197
14198         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
14199                 return -EINVAL;
14200
14201         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14202         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14203
14204         wdev_lock(wdev);
14205         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
14206         wdev_unlock(wdev);
14207
14208         return err;
14209 }
14210
14211 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
14212                                        struct genl_info *info)
14213 {
14214         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14215         struct net_device *dev = info->user_ptr[1];
14216         struct wireless_dev *wdev = dev->ieee80211_ptr;
14217         struct cfg80211_chan_def chandef = {};
14218         const u8 *addr;
14219         u8 oper_class;
14220         int err;
14221
14222         if (!rdev->ops->tdls_channel_switch ||
14223             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14224                 return -EOPNOTSUPP;
14225
14226         switch (dev->ieee80211_ptr->iftype) {
14227         case NL80211_IFTYPE_STATION:
14228         case NL80211_IFTYPE_P2P_CLIENT:
14229                 break;
14230         default:
14231                 return -EOPNOTSUPP;
14232         }
14233
14234         if (!info->attrs[NL80211_ATTR_MAC] ||
14235             !info->attrs[NL80211_ATTR_OPER_CLASS])
14236                 return -EINVAL;
14237
14238         err = nl80211_parse_chandef(rdev, info, &chandef);
14239         if (err)
14240                 return err;
14241
14242         /*
14243          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14244          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14245          * specification is not defined for them.
14246          */
14247         if (chandef.chan->band == NL80211_BAND_2GHZ &&
14248             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14249             chandef.width != NL80211_CHAN_WIDTH_20)
14250                 return -EINVAL;
14251
14252         /* we will be active on the TDLS link */
14253         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14254                                            wdev->iftype))
14255                 return -EINVAL;
14256
14257         /* don't allow switching to DFS channels */
14258         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14259                 return -EINVAL;
14260
14261         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14262         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14263
14264         wdev_lock(wdev);
14265         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14266         wdev_unlock(wdev);
14267
14268         return err;
14269 }
14270
14271 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14272                                               struct genl_info *info)
14273 {
14274         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14275         struct net_device *dev = info->user_ptr[1];
14276         struct wireless_dev *wdev = dev->ieee80211_ptr;
14277         const u8 *addr;
14278
14279         if (!rdev->ops->tdls_channel_switch ||
14280             !rdev->ops->tdls_cancel_channel_switch ||
14281             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14282                 return -EOPNOTSUPP;
14283
14284         switch (dev->ieee80211_ptr->iftype) {
14285         case NL80211_IFTYPE_STATION:
14286         case NL80211_IFTYPE_P2P_CLIENT:
14287                 break;
14288         default:
14289                 return -EOPNOTSUPP;
14290         }
14291
14292         if (!info->attrs[NL80211_ATTR_MAC])
14293                 return -EINVAL;
14294
14295         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14296
14297         wdev_lock(wdev);
14298         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14299         wdev_unlock(wdev);
14300
14301         return 0;
14302 }
14303
14304 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14305                                             struct genl_info *info)
14306 {
14307         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14308         struct net_device *dev = info->user_ptr[1];
14309         struct wireless_dev *wdev = dev->ieee80211_ptr;
14310         const struct nlattr *nla;
14311         bool enabled;
14312
14313         if (!rdev->ops->set_multicast_to_unicast)
14314                 return -EOPNOTSUPP;
14315
14316         if (wdev->iftype != NL80211_IFTYPE_AP &&
14317             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14318                 return -EOPNOTSUPP;
14319
14320         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14321         enabled = nla_get_flag(nla);
14322
14323         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14324 }
14325
14326 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14327 {
14328         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14329         struct net_device *dev = info->user_ptr[1];
14330         struct wireless_dev *wdev = dev->ieee80211_ptr;
14331         struct cfg80211_pmk_conf pmk_conf = {};
14332         int ret;
14333
14334         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14335             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14336                 return -EOPNOTSUPP;
14337
14338         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14339                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14340                 return -EOPNOTSUPP;
14341
14342         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14343                 return -EINVAL;
14344
14345         wdev_lock(wdev);
14346         if (!wdev->current_bss) {
14347                 ret = -ENOTCONN;
14348                 goto out;
14349         }
14350
14351         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14352         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14353                 ret = -EINVAL;
14354                 goto out;
14355         }
14356
14357         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14358         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14359         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14360             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14361                 ret = -EINVAL;
14362                 goto out;
14363         }
14364
14365         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14366                 pmk_conf.pmk_r0_name =
14367                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14368
14369         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14370 out:
14371         wdev_unlock(wdev);
14372         return ret;
14373 }
14374
14375 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14376 {
14377         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14378         struct net_device *dev = info->user_ptr[1];
14379         struct wireless_dev *wdev = dev->ieee80211_ptr;
14380         const u8 *aa;
14381         int ret;
14382
14383         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14384             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14385                 return -EOPNOTSUPP;
14386
14387         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14388                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14389                 return -EOPNOTSUPP;
14390
14391         if (!info->attrs[NL80211_ATTR_MAC])
14392                 return -EINVAL;
14393
14394         wdev_lock(wdev);
14395         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14396         ret = rdev_del_pmk(rdev, dev, aa);
14397         wdev_unlock(wdev);
14398
14399         return ret;
14400 }
14401
14402 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14403 {
14404         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14405         struct net_device *dev = info->user_ptr[1];
14406         struct cfg80211_external_auth_params params;
14407
14408         if (!rdev->ops->external_auth)
14409                 return -EOPNOTSUPP;
14410
14411         if (!info->attrs[NL80211_ATTR_SSID] &&
14412             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14413             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14414                 return -EINVAL;
14415
14416         if (!info->attrs[NL80211_ATTR_BSSID])
14417                 return -EINVAL;
14418
14419         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14420                 return -EINVAL;
14421
14422         memset(&params, 0, sizeof(params));
14423
14424         if (info->attrs[NL80211_ATTR_SSID]) {
14425                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14426                 if (params.ssid.ssid_len == 0)
14427                         return -EINVAL;
14428                 memcpy(params.ssid.ssid,
14429                        nla_data(info->attrs[NL80211_ATTR_SSID]),
14430                        params.ssid.ssid_len);
14431         }
14432
14433         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14434                ETH_ALEN);
14435
14436         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14437
14438         if (info->attrs[NL80211_ATTR_PMKID])
14439                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14440
14441         return rdev_external_auth(rdev, dev, &params);
14442 }
14443
14444 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14445 {
14446         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14447         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14448         struct net_device *dev = info->user_ptr[1];
14449         struct wireless_dev *wdev = dev->ieee80211_ptr;
14450         const u8 *buf;
14451         size_t len;
14452         u8 *dest;
14453         u16 proto;
14454         bool noencrypt;
14455         u64 cookie = 0;
14456         int err;
14457
14458         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14459                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14460                 return -EOPNOTSUPP;
14461
14462         if (!rdev->ops->tx_control_port)
14463                 return -EOPNOTSUPP;
14464
14465         if (!info->attrs[NL80211_ATTR_FRAME] ||
14466             !info->attrs[NL80211_ATTR_MAC] ||
14467             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14468                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14469                 return -EINVAL;
14470         }
14471
14472         wdev_lock(wdev);
14473
14474         switch (wdev->iftype) {
14475         case NL80211_IFTYPE_AP:
14476         case NL80211_IFTYPE_P2P_GO:
14477         case NL80211_IFTYPE_MESH_POINT:
14478                 break;
14479         case NL80211_IFTYPE_ADHOC:
14480         case NL80211_IFTYPE_STATION:
14481         case NL80211_IFTYPE_P2P_CLIENT:
14482                 if (wdev->current_bss)
14483                         break;
14484                 err = -ENOTCONN;
14485                 goto out;
14486         default:
14487                 err = -EOPNOTSUPP;
14488                 goto out;
14489         }
14490
14491         wdev_unlock(wdev);
14492
14493         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14494         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14495         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14496         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14497         noencrypt =
14498                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14499
14500         err = rdev_tx_control_port(rdev, dev, buf, len,
14501                                    dest, cpu_to_be16(proto), noencrypt,
14502                                    dont_wait_for_ack ? NULL : &cookie);
14503         if (!err && !dont_wait_for_ack)
14504                 nl_set_extack_cookie_u64(info->extack, cookie);
14505         return err;
14506  out:
14507         wdev_unlock(wdev);
14508         return err;
14509 }
14510
14511 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14512                                            struct genl_info *info)
14513 {
14514         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14515         struct net_device *dev = info->user_ptr[1];
14516         struct wireless_dev *wdev = dev->ieee80211_ptr;
14517         struct cfg80211_ftm_responder_stats ftm_stats = {};
14518         struct sk_buff *msg;
14519         void *hdr;
14520         struct nlattr *ftm_stats_attr;
14521         int err;
14522
14523         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14524                 return -EOPNOTSUPP;
14525
14526         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14527         if (err)
14528                 return err;
14529
14530         if (!ftm_stats.filled)
14531                 return -ENODATA;
14532
14533         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14534         if (!msg)
14535                 return -ENOMEM;
14536
14537         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14538                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14539         if (!hdr)
14540                 goto nla_put_failure;
14541
14542         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14543                 goto nla_put_failure;
14544
14545         ftm_stats_attr = nla_nest_start_noflag(msg,
14546                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14547         if (!ftm_stats_attr)
14548                 goto nla_put_failure;
14549
14550 #define SET_FTM(field, name, type)                                       \
14551         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14552             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14553                              ftm_stats.field))                           \
14554                 goto nla_put_failure; } while (0)
14555 #define SET_FTM_U64(field, name)                                         \
14556         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14557             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14558                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14559                 goto nla_put_failure; } while (0)
14560
14561         SET_FTM(success_num, SUCCESS_NUM, u32);
14562         SET_FTM(partial_num, PARTIAL_NUM, u32);
14563         SET_FTM(failed_num, FAILED_NUM, u32);
14564         SET_FTM(asap_num, ASAP_NUM, u32);
14565         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14566         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14567         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14568         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14569         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14570 #undef SET_FTM
14571
14572         nla_nest_end(msg, ftm_stats_attr);
14573
14574         genlmsg_end(msg, hdr);
14575         return genlmsg_reply(msg, info);
14576
14577 nla_put_failure:
14578         nlmsg_free(msg);
14579         return -ENOBUFS;
14580 }
14581
14582 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14583 {
14584         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14585         struct cfg80211_update_owe_info owe_info;
14586         struct net_device *dev = info->user_ptr[1];
14587
14588         if (!rdev->ops->update_owe_info)
14589                 return -EOPNOTSUPP;
14590
14591         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14592             !info->attrs[NL80211_ATTR_MAC])
14593                 return -EINVAL;
14594
14595         memset(&owe_info, 0, sizeof(owe_info));
14596         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14597         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14598
14599         if (info->attrs[NL80211_ATTR_IE]) {
14600                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14601                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14602         }
14603
14604         return rdev_update_owe_info(rdev, dev, &owe_info);
14605 }
14606
14607 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14608 {
14609         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14610         struct net_device *dev = info->user_ptr[1];
14611         struct wireless_dev *wdev = dev->ieee80211_ptr;
14612         struct station_info sinfo = {};
14613         const u8 *buf;
14614         size_t len;
14615         u8 *dest;
14616         int err;
14617
14618         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14619                 return -EOPNOTSUPP;
14620
14621         if (!info->attrs[NL80211_ATTR_MAC] ||
14622             !info->attrs[NL80211_ATTR_FRAME]) {
14623                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14624                 return -EINVAL;
14625         }
14626
14627         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14628                 return -EOPNOTSUPP;
14629
14630         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14631         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14632         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14633
14634         if (len < sizeof(struct ethhdr))
14635                 return -EINVAL;
14636
14637         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14638             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14639                 return -EINVAL;
14640
14641         err = rdev_get_station(rdev, dev, dest, &sinfo);
14642         if (err)
14643                 return err;
14644
14645         cfg80211_sinfo_release_content(&sinfo);
14646
14647         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14648 }
14649
14650 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14651                           struct nlattr *attrs[], struct net_device *dev,
14652                           struct cfg80211_tid_cfg *tid_conf,
14653                           struct genl_info *info, const u8 *peer)
14654 {
14655         struct netlink_ext_ack *extack = info->extack;
14656         u64 mask;
14657         int err;
14658
14659         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14660                 return -EINVAL;
14661
14662         tid_conf->config_override =
14663                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14664         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14665
14666         if (tid_conf->config_override) {
14667                 if (rdev->ops->reset_tid_config) {
14668                         err = rdev_reset_tid_config(rdev, dev, peer,
14669                                                     tid_conf->tids);
14670                         if (err)
14671                                 return err;
14672                 } else {
14673                         return -EINVAL;
14674                 }
14675         }
14676
14677         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14678                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14679                 tid_conf->noack =
14680                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14681         }
14682
14683         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14684                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14685                 tid_conf->retry_short =
14686                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14687
14688                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14689                         return -EINVAL;
14690         }
14691
14692         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14693                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14694                 tid_conf->retry_long =
14695                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14696
14697                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14698                         return -EINVAL;
14699         }
14700
14701         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14702                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14703                 tid_conf->ampdu =
14704                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14705         }
14706
14707         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14708                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14709                 tid_conf->rtscts =
14710                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14711         }
14712
14713         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14714                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14715                 tid_conf->amsdu =
14716                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14717         }
14718
14719         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14720                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14721
14722                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14723
14724                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14725                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14726                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14727                                                     &tid_conf->txrate_mask, dev,
14728                                                     true);
14729                         if (err)
14730                                 return err;
14731
14732                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14733                 }
14734                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14735         }
14736
14737         if (peer)
14738                 mask = rdev->wiphy.tid_config_support.peer;
14739         else
14740                 mask = rdev->wiphy.tid_config_support.vif;
14741
14742         if (tid_conf->mask & ~mask) {
14743                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14744                 return -ENOTSUPP;
14745         }
14746
14747         return 0;
14748 }
14749
14750 static int nl80211_set_tid_config(struct sk_buff *skb,
14751                                   struct genl_info *info)
14752 {
14753         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14754         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14755         struct net_device *dev = info->user_ptr[1];
14756         struct cfg80211_tid_config *tid_config;
14757         struct nlattr *tid;
14758         int conf_idx = 0, rem_conf;
14759         int ret = -EINVAL;
14760         u32 num_conf = 0;
14761
14762         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14763                 return -EINVAL;
14764
14765         if (!rdev->ops->set_tid_config)
14766                 return -EOPNOTSUPP;
14767
14768         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14769                             rem_conf)
14770                 num_conf++;
14771
14772         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14773                              GFP_KERNEL);
14774         if (!tid_config)
14775                 return -ENOMEM;
14776
14777         tid_config->n_tid_conf = num_conf;
14778
14779         if (info->attrs[NL80211_ATTR_MAC])
14780                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14781
14782         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14783                             rem_conf) {
14784                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14785                                        tid, NULL, NULL);
14786
14787                 if (ret)
14788                         goto bad_tid_conf;
14789
14790                 ret = parse_tid_conf(rdev, attrs, dev,
14791                                      &tid_config->tid_conf[conf_idx],
14792                                      info, tid_config->peer);
14793                 if (ret)
14794                         goto bad_tid_conf;
14795
14796                 conf_idx++;
14797         }
14798
14799         ret = rdev_set_tid_config(rdev, dev, tid_config);
14800
14801 bad_tid_conf:
14802         kfree(tid_config);
14803         return ret;
14804 }
14805
14806 #define NL80211_FLAG_NEED_WIPHY         0x01
14807 #define NL80211_FLAG_NEED_NETDEV        0x02
14808 #define NL80211_FLAG_NEED_RTNL          0x04
14809 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14810 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14811                                          NL80211_FLAG_CHECK_NETDEV_UP)
14812 #define NL80211_FLAG_NEED_WDEV          0x10
14813 /* If a netdev is associated, it must be UP, P2P must be started */
14814 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14815                                          NL80211_FLAG_CHECK_NETDEV_UP)
14816 #define NL80211_FLAG_CLEAR_SKB          0x20
14817 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
14818
14819 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14820                             struct genl_info *info)
14821 {
14822         struct cfg80211_registered_device *rdev = NULL;
14823         struct wireless_dev *wdev;
14824         struct net_device *dev;
14825
14826         rtnl_lock();
14827         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14828                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14829                 if (IS_ERR(rdev)) {
14830                         rtnl_unlock();
14831                         return PTR_ERR(rdev);
14832                 }
14833                 info->user_ptr[0] = rdev;
14834         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14835                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14836                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
14837                                                   info->attrs);
14838                 if (IS_ERR(wdev)) {
14839                         rtnl_unlock();
14840                         return PTR_ERR(wdev);
14841                 }
14842
14843                 dev = wdev->netdev;
14844                 rdev = wiphy_to_rdev(wdev->wiphy);
14845
14846                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14847                         if (!dev) {
14848                                 rtnl_unlock();
14849                                 return -EINVAL;
14850                         }
14851
14852                         info->user_ptr[1] = dev;
14853                 } else {
14854                         info->user_ptr[1] = wdev;
14855                 }
14856
14857                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14858                     !wdev_running(wdev)) {
14859                         rtnl_unlock();
14860                         return -ENETDOWN;
14861                 }
14862
14863                 if (dev)
14864                         dev_hold(dev);
14865
14866                 info->user_ptr[0] = rdev;
14867         }
14868
14869         if (rdev && !(ops->internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
14870                 wiphy_lock(&rdev->wiphy);
14871                 /* we keep the mutex locked until post_doit */
14872                 __release(&rdev->wiphy.mtx);
14873         }
14874         if (!(ops->internal_flags & NL80211_FLAG_NEED_RTNL))
14875                 rtnl_unlock();
14876
14877         return 0;
14878 }
14879
14880 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14881                               struct genl_info *info)
14882 {
14883         if (info->user_ptr[1]) {
14884                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14885                         struct wireless_dev *wdev = info->user_ptr[1];
14886
14887                         if (wdev->netdev)
14888                                 dev_put(wdev->netdev);
14889                 } else {
14890                         dev_put(info->user_ptr[1]);
14891                 }
14892         }
14893
14894         if (info->user_ptr[0] &&
14895             !(ops->internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
14896                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14897
14898                 /* we kept the mutex locked since pre_doit */
14899                 __acquire(&rdev->wiphy.mtx);
14900                 wiphy_unlock(&rdev->wiphy);
14901         }
14902
14903         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14904                 rtnl_unlock();
14905
14906         /* If needed, clear the netlink message payload from the SKB
14907          * as it might contain key data that shouldn't stick around on
14908          * the heap after the SKB is freed. The netlink message header
14909          * is still needed for further processing, so leave it intact.
14910          */
14911         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14912                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14913
14914                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14915         }
14916 }
14917
14918 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
14919                                      struct cfg80211_sar_specs *sar_specs,
14920                                      struct nlattr *spec[], int index)
14921 {
14922         u32 range_index, i;
14923
14924         if (!sar_specs || !spec)
14925                 return -EINVAL;
14926
14927         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
14928             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
14929                 return -EINVAL;
14930
14931         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
14932
14933         /* check if range_index exceeds num_freq_ranges */
14934         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
14935                 return -EINVAL;
14936
14937         /* check if range_index duplicates */
14938         for (i = 0; i < index; i++) {
14939                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
14940                         return -EINVAL;
14941         }
14942
14943         sar_specs->sub_specs[index].power =
14944                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
14945
14946         sar_specs->sub_specs[index].freq_range_index = range_index;
14947
14948         return 0;
14949 }
14950
14951 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
14952 {
14953         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14954         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
14955         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
14956         struct cfg80211_sar_specs *sar_spec;
14957         enum nl80211_sar_type type;
14958         struct nlattr *spec_list;
14959         u32 specs;
14960         int rem, err;
14961
14962         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
14963                 return -EOPNOTSUPP;
14964
14965         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
14966                 return -EINVAL;
14967
14968         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
14969                          info->attrs[NL80211_ATTR_SAR_SPEC],
14970                          NULL, NULL);
14971
14972         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
14973                 return -EINVAL;
14974
14975         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
14976         if (type != rdev->wiphy.sar_capa->type)
14977                 return -EINVAL;
14978
14979         specs = 0;
14980         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
14981                 specs++;
14982
14983         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
14984                 return -EINVAL;
14985
14986         sar_spec = kzalloc(sizeof(*sar_spec) +
14987                            specs * sizeof(struct cfg80211_sar_sub_specs),
14988                            GFP_KERNEL);
14989         if (!sar_spec)
14990                 return -ENOMEM;
14991
14992         sar_spec->type = type;
14993         specs = 0;
14994         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
14995                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
14996                                  spec_list, NULL, NULL);
14997
14998                 switch (type) {
14999                 case NL80211_SAR_TYPE_POWER:
15000                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
15001                                                       spec, specs)) {
15002                                 err = -EINVAL;
15003                                 goto error;
15004                         }
15005                         break;
15006                 default:
15007                         err = -EINVAL;
15008                         goto error;
15009                 }
15010                 specs++;
15011         }
15012
15013         sar_spec->num_sub_specs = specs;
15014
15015         rdev->cur_cmd_info = info;
15016         err = rdev_set_sar_specs(rdev, sar_spec);
15017         rdev->cur_cmd_info = NULL;
15018 error:
15019         kfree(sar_spec);
15020         return err;
15021 }
15022
15023 static const struct genl_ops nl80211_ops[] = {
15024         {
15025                 .cmd = NL80211_CMD_GET_WIPHY,
15026                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15027                 .doit = nl80211_get_wiphy,
15028                 .dumpit = nl80211_dump_wiphy,
15029                 .done = nl80211_dump_wiphy_done,
15030                 /* can be retrieved by unprivileged users */
15031                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15032         },
15033 };
15034
15035 static const struct genl_small_ops nl80211_small_ops[] = {
15036         {
15037                 .cmd = NL80211_CMD_SET_WIPHY,
15038                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15039                 .doit = nl80211_set_wiphy,
15040                 .flags = GENL_UNS_ADMIN_PERM,
15041         },
15042         {
15043                 .cmd = NL80211_CMD_GET_INTERFACE,
15044                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15045                 .doit = nl80211_get_interface,
15046                 .dumpit = nl80211_dump_interface,
15047                 /* can be retrieved by unprivileged users */
15048                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15049         },
15050         {
15051                 .cmd = NL80211_CMD_SET_INTERFACE,
15052                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15053                 .doit = nl80211_set_interface,
15054                 .flags = GENL_UNS_ADMIN_PERM,
15055                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15056                                   NL80211_FLAG_NEED_RTNL,
15057         },
15058         {
15059                 .cmd = NL80211_CMD_NEW_INTERFACE,
15060                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15061                 .doit = nl80211_new_interface,
15062                 .flags = GENL_UNS_ADMIN_PERM,
15063                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15064                                   NL80211_FLAG_NEED_RTNL |
15065                                   /* we take the wiphy mutex later ourselves */
15066                                   NL80211_FLAG_NO_WIPHY_MTX,
15067         },
15068         {
15069                 .cmd = NL80211_CMD_DEL_INTERFACE,
15070                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15071                 .doit = nl80211_del_interface,
15072                 .flags = GENL_UNS_ADMIN_PERM,
15073                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15074                                   NL80211_FLAG_NEED_RTNL,
15075         },
15076         {
15077                 .cmd = NL80211_CMD_GET_KEY,
15078                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15079                 .doit = nl80211_get_key,
15080                 .flags = GENL_UNS_ADMIN_PERM,
15081                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15082         },
15083         {
15084                 .cmd = NL80211_CMD_SET_KEY,
15085                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15086                 .doit = nl80211_set_key,
15087                 .flags = GENL_UNS_ADMIN_PERM,
15088                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15089                                   NL80211_FLAG_CLEAR_SKB,
15090         },
15091         {
15092                 .cmd = NL80211_CMD_NEW_KEY,
15093                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15094                 .doit = nl80211_new_key,
15095                 .flags = GENL_UNS_ADMIN_PERM,
15096                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15097                                   NL80211_FLAG_CLEAR_SKB,
15098         },
15099         {
15100                 .cmd = NL80211_CMD_DEL_KEY,
15101                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15102                 .doit = nl80211_del_key,
15103                 .flags = GENL_UNS_ADMIN_PERM,
15104                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15105         },
15106         {
15107                 .cmd = NL80211_CMD_SET_BEACON,
15108                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15109                 .flags = GENL_UNS_ADMIN_PERM,
15110                 .doit = nl80211_set_beacon,
15111                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15112         },
15113         {
15114                 .cmd = NL80211_CMD_START_AP,
15115                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15116                 .flags = GENL_UNS_ADMIN_PERM,
15117                 .doit = nl80211_start_ap,
15118                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15119         },
15120         {
15121                 .cmd = NL80211_CMD_STOP_AP,
15122                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15123                 .flags = GENL_UNS_ADMIN_PERM,
15124                 .doit = nl80211_stop_ap,
15125                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15126         },
15127         {
15128                 .cmd = NL80211_CMD_GET_STATION,
15129                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15130                 .doit = nl80211_get_station,
15131                 .dumpit = nl80211_dump_station,
15132                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15133         },
15134         {
15135                 .cmd = NL80211_CMD_SET_STATION,
15136                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15137                 .doit = nl80211_set_station,
15138                 .flags = GENL_UNS_ADMIN_PERM,
15139                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15140         },
15141         {
15142                 .cmd = NL80211_CMD_NEW_STATION,
15143                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15144                 .doit = nl80211_new_station,
15145                 .flags = GENL_UNS_ADMIN_PERM,
15146                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15147         },
15148         {
15149                 .cmd = NL80211_CMD_DEL_STATION,
15150                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15151                 .doit = nl80211_del_station,
15152                 .flags = GENL_UNS_ADMIN_PERM,
15153                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15154         },
15155         {
15156                 .cmd = NL80211_CMD_GET_MPATH,
15157                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15158                 .doit = nl80211_get_mpath,
15159                 .dumpit = nl80211_dump_mpath,
15160                 .flags = GENL_UNS_ADMIN_PERM,
15161                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15162         },
15163         {
15164                 .cmd = NL80211_CMD_GET_MPP,
15165                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15166                 .doit = nl80211_get_mpp,
15167                 .dumpit = nl80211_dump_mpp,
15168                 .flags = GENL_UNS_ADMIN_PERM,
15169                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15170         },
15171         {
15172                 .cmd = NL80211_CMD_SET_MPATH,
15173                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15174                 .doit = nl80211_set_mpath,
15175                 .flags = GENL_UNS_ADMIN_PERM,
15176                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15177         },
15178         {
15179                 .cmd = NL80211_CMD_NEW_MPATH,
15180                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15181                 .doit = nl80211_new_mpath,
15182                 .flags = GENL_UNS_ADMIN_PERM,
15183                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15184         },
15185         {
15186                 .cmd = NL80211_CMD_DEL_MPATH,
15187                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15188                 .doit = nl80211_del_mpath,
15189                 .flags = GENL_UNS_ADMIN_PERM,
15190                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15191         },
15192         {
15193                 .cmd = NL80211_CMD_SET_BSS,
15194                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15195                 .doit = nl80211_set_bss,
15196                 .flags = GENL_UNS_ADMIN_PERM,
15197                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15198         },
15199         {
15200                 .cmd = NL80211_CMD_GET_REG,
15201                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15202                 .doit = nl80211_get_reg_do,
15203                 .dumpit = nl80211_get_reg_dump,
15204                 .internal_flags = 0,
15205                 /* can be retrieved by unprivileged users */
15206         },
15207 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
15208         {
15209                 .cmd = NL80211_CMD_SET_REG,
15210                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15211                 .doit = nl80211_set_reg,
15212                 .flags = GENL_ADMIN_PERM,
15213                 .internal_flags = 0,
15214         },
15215 #endif
15216         {
15217                 .cmd = NL80211_CMD_REQ_SET_REG,
15218                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15219                 .doit = nl80211_req_set_reg,
15220                 .flags = GENL_ADMIN_PERM,
15221         },
15222         {
15223                 .cmd = NL80211_CMD_RELOAD_REGDB,
15224                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15225                 .doit = nl80211_reload_regdb,
15226                 .flags = GENL_ADMIN_PERM,
15227         },
15228         {
15229                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
15230                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15231                 .doit = nl80211_get_mesh_config,
15232                 /* can be retrieved by unprivileged users */
15233                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15234         },
15235         {
15236                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
15237                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15238                 .doit = nl80211_update_mesh_config,
15239                 .flags = GENL_UNS_ADMIN_PERM,
15240                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15241         },
15242         {
15243                 .cmd = NL80211_CMD_TRIGGER_SCAN,
15244                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15245                 .doit = nl80211_trigger_scan,
15246                 .flags = GENL_UNS_ADMIN_PERM,
15247                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15248         },
15249         {
15250                 .cmd = NL80211_CMD_ABORT_SCAN,
15251                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15252                 .doit = nl80211_abort_scan,
15253                 .flags = GENL_UNS_ADMIN_PERM,
15254                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15255         },
15256         {
15257                 .cmd = NL80211_CMD_GET_SCAN,
15258                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15259                 .dumpit = nl80211_dump_scan,
15260         },
15261         {
15262                 .cmd = NL80211_CMD_START_SCHED_SCAN,
15263                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15264                 .doit = nl80211_start_sched_scan,
15265                 .flags = GENL_UNS_ADMIN_PERM,
15266                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15267         },
15268         {
15269                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
15270                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15271                 .doit = nl80211_stop_sched_scan,
15272                 .flags = GENL_UNS_ADMIN_PERM,
15273                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15274         },
15275         {
15276                 .cmd = NL80211_CMD_AUTHENTICATE,
15277                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15278                 .doit = nl80211_authenticate,
15279                 .flags = GENL_UNS_ADMIN_PERM,
15280                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15281                                   0 |
15282                                   NL80211_FLAG_CLEAR_SKB,
15283         },
15284         {
15285                 .cmd = NL80211_CMD_ASSOCIATE,
15286                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15287                 .doit = nl80211_associate,
15288                 .flags = GENL_UNS_ADMIN_PERM,
15289                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15290                                   0 |
15291                                   NL80211_FLAG_CLEAR_SKB,
15292         },
15293         {
15294                 .cmd = NL80211_CMD_DEAUTHENTICATE,
15295                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15296                 .doit = nl80211_deauthenticate,
15297                 .flags = GENL_UNS_ADMIN_PERM,
15298                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15299         },
15300         {
15301                 .cmd = NL80211_CMD_DISASSOCIATE,
15302                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15303                 .doit = nl80211_disassociate,
15304                 .flags = GENL_UNS_ADMIN_PERM,
15305                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15306         },
15307         {
15308                 .cmd = NL80211_CMD_JOIN_IBSS,
15309                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15310                 .doit = nl80211_join_ibss,
15311                 .flags = GENL_UNS_ADMIN_PERM,
15312                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15313         },
15314         {
15315                 .cmd = NL80211_CMD_LEAVE_IBSS,
15316                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15317                 .doit = nl80211_leave_ibss,
15318                 .flags = GENL_UNS_ADMIN_PERM,
15319                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15320         },
15321 #ifdef CONFIG_NL80211_TESTMODE
15322         {
15323                 .cmd = NL80211_CMD_TESTMODE,
15324                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15325                 .doit = nl80211_testmode_do,
15326                 .dumpit = nl80211_testmode_dump,
15327                 .flags = GENL_UNS_ADMIN_PERM,
15328                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15329         },
15330 #endif
15331         {
15332                 .cmd = NL80211_CMD_CONNECT,
15333                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15334                 .doit = nl80211_connect,
15335                 .flags = GENL_UNS_ADMIN_PERM,
15336                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15337                                   0 |
15338                                   NL80211_FLAG_CLEAR_SKB,
15339         },
15340         {
15341                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15342                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15343                 .doit = nl80211_update_connect_params,
15344                 .flags = GENL_ADMIN_PERM,
15345                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15346                                   0 |
15347                                   NL80211_FLAG_CLEAR_SKB,
15348         },
15349         {
15350                 .cmd = NL80211_CMD_DISCONNECT,
15351                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15352                 .doit = nl80211_disconnect,
15353                 .flags = GENL_UNS_ADMIN_PERM,
15354                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15355         },
15356         {
15357                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15358                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15359                 .doit = nl80211_wiphy_netns,
15360                 .flags = GENL_UNS_ADMIN_PERM,
15361                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15362                                   NL80211_FLAG_NEED_RTNL |
15363                                   NL80211_FLAG_NO_WIPHY_MTX,
15364         },
15365         {
15366                 .cmd = NL80211_CMD_GET_SURVEY,
15367                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15368                 .dumpit = nl80211_dump_survey,
15369         },
15370         {
15371                 .cmd = NL80211_CMD_SET_PMKSA,
15372                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15373                 .doit = nl80211_setdel_pmksa,
15374                 .flags = GENL_UNS_ADMIN_PERM,
15375                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15376                                   0 |
15377                                   NL80211_FLAG_CLEAR_SKB,
15378         },
15379         {
15380                 .cmd = NL80211_CMD_DEL_PMKSA,
15381                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15382                 .doit = nl80211_setdel_pmksa,
15383                 .flags = GENL_UNS_ADMIN_PERM,
15384                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15385         },
15386         {
15387                 .cmd = NL80211_CMD_FLUSH_PMKSA,
15388                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15389                 .doit = nl80211_flush_pmksa,
15390                 .flags = GENL_UNS_ADMIN_PERM,
15391                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15392         },
15393         {
15394                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15395                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15396                 .doit = nl80211_remain_on_channel,
15397                 .flags = GENL_UNS_ADMIN_PERM,
15398                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15399         },
15400         {
15401                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15402                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15403                 .doit = nl80211_cancel_remain_on_channel,
15404                 .flags = GENL_UNS_ADMIN_PERM,
15405                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15406         },
15407         {
15408                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15409                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15410                 .doit = nl80211_set_tx_bitrate_mask,
15411                 .flags = GENL_UNS_ADMIN_PERM,
15412                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15413         },
15414         {
15415                 .cmd = NL80211_CMD_REGISTER_FRAME,
15416                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15417                 .doit = nl80211_register_mgmt,
15418                 .flags = GENL_UNS_ADMIN_PERM,
15419                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15420         },
15421         {
15422                 .cmd = NL80211_CMD_FRAME,
15423                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15424                 .doit = nl80211_tx_mgmt,
15425                 .flags = GENL_UNS_ADMIN_PERM,
15426                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15427         },
15428         {
15429                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15430                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15431                 .doit = nl80211_tx_mgmt_cancel_wait,
15432                 .flags = GENL_UNS_ADMIN_PERM,
15433                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15434         },
15435         {
15436                 .cmd = NL80211_CMD_SET_POWER_SAVE,
15437                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15438                 .doit = nl80211_set_power_save,
15439                 .flags = GENL_UNS_ADMIN_PERM,
15440                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15441         },
15442         {
15443                 .cmd = NL80211_CMD_GET_POWER_SAVE,
15444                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15445                 .doit = nl80211_get_power_save,
15446                 /* can be retrieved by unprivileged users */
15447                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15448         },
15449         {
15450                 .cmd = NL80211_CMD_SET_CQM,
15451                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15452                 .doit = nl80211_set_cqm,
15453                 .flags = GENL_UNS_ADMIN_PERM,
15454                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15455         },
15456         {
15457                 .cmd = NL80211_CMD_SET_CHANNEL,
15458                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15459                 .doit = nl80211_set_channel,
15460                 .flags = GENL_UNS_ADMIN_PERM,
15461                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15462         },
15463         {
15464                 .cmd = NL80211_CMD_JOIN_MESH,
15465                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15466                 .doit = nl80211_join_mesh,
15467                 .flags = GENL_UNS_ADMIN_PERM,
15468                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15469         },
15470         {
15471                 .cmd = NL80211_CMD_LEAVE_MESH,
15472                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15473                 .doit = nl80211_leave_mesh,
15474                 .flags = GENL_UNS_ADMIN_PERM,
15475                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15476         },
15477         {
15478                 .cmd = NL80211_CMD_JOIN_OCB,
15479                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15480                 .doit = nl80211_join_ocb,
15481                 .flags = GENL_UNS_ADMIN_PERM,
15482                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15483         },
15484         {
15485                 .cmd = NL80211_CMD_LEAVE_OCB,
15486                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15487                 .doit = nl80211_leave_ocb,
15488                 .flags = GENL_UNS_ADMIN_PERM,
15489                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15490         },
15491 #ifdef CONFIG_PM
15492         {
15493                 .cmd = NL80211_CMD_GET_WOWLAN,
15494                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15495                 .doit = nl80211_get_wowlan,
15496                 /* can be retrieved by unprivileged users */
15497                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15498         },
15499         {
15500                 .cmd = NL80211_CMD_SET_WOWLAN,
15501                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15502                 .doit = nl80211_set_wowlan,
15503                 .flags = GENL_UNS_ADMIN_PERM,
15504                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15505         },
15506 #endif
15507         {
15508                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15509                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15510                 .doit = nl80211_set_rekey_data,
15511                 .flags = GENL_UNS_ADMIN_PERM,
15512                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15513                                   0 |
15514                                   NL80211_FLAG_CLEAR_SKB,
15515         },
15516         {
15517                 .cmd = NL80211_CMD_TDLS_MGMT,
15518                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15519                 .doit = nl80211_tdls_mgmt,
15520                 .flags = GENL_UNS_ADMIN_PERM,
15521                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15522         },
15523         {
15524                 .cmd = NL80211_CMD_TDLS_OPER,
15525                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15526                 .doit = nl80211_tdls_oper,
15527                 .flags = GENL_UNS_ADMIN_PERM,
15528                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15529         },
15530         {
15531                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15532                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15533                 .doit = nl80211_register_unexpected_frame,
15534                 .flags = GENL_UNS_ADMIN_PERM,
15535                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15536         },
15537         {
15538                 .cmd = NL80211_CMD_PROBE_CLIENT,
15539                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15540                 .doit = nl80211_probe_client,
15541                 .flags = GENL_UNS_ADMIN_PERM,
15542                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15543         },
15544         {
15545                 .cmd = NL80211_CMD_REGISTER_BEACONS,
15546                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15547                 .doit = nl80211_register_beacons,
15548                 .flags = GENL_UNS_ADMIN_PERM,
15549                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15550         },
15551         {
15552                 .cmd = NL80211_CMD_SET_NOACK_MAP,
15553                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15554                 .doit = nl80211_set_noack_map,
15555                 .flags = GENL_UNS_ADMIN_PERM,
15556                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15557         },
15558         {
15559                 .cmd = NL80211_CMD_START_P2P_DEVICE,
15560                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15561                 .doit = nl80211_start_p2p_device,
15562                 .flags = GENL_UNS_ADMIN_PERM,
15563                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15564                                   NL80211_FLAG_NEED_RTNL,
15565         },
15566         {
15567                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15568                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15569                 .doit = nl80211_stop_p2p_device,
15570                 .flags = GENL_UNS_ADMIN_PERM,
15571                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15572                                   NL80211_FLAG_NEED_RTNL,
15573         },
15574         {
15575                 .cmd = NL80211_CMD_START_NAN,
15576                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15577                 .doit = nl80211_start_nan,
15578                 .flags = GENL_ADMIN_PERM,
15579                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15580                                   NL80211_FLAG_NEED_RTNL,
15581         },
15582         {
15583                 .cmd = NL80211_CMD_STOP_NAN,
15584                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15585                 .doit = nl80211_stop_nan,
15586                 .flags = GENL_ADMIN_PERM,
15587                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15588                                   NL80211_FLAG_NEED_RTNL,
15589         },
15590         {
15591                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15592                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15593                 .doit = nl80211_nan_add_func,
15594                 .flags = GENL_ADMIN_PERM,
15595                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15596         },
15597         {
15598                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15599                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15600                 .doit = nl80211_nan_del_func,
15601                 .flags = GENL_ADMIN_PERM,
15602                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15603         },
15604         {
15605                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15606                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15607                 .doit = nl80211_nan_change_config,
15608                 .flags = GENL_ADMIN_PERM,
15609                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15610         },
15611         {
15612                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15613                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15614                 .doit = nl80211_set_mcast_rate,
15615                 .flags = GENL_UNS_ADMIN_PERM,
15616                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15617         },
15618         {
15619                 .cmd = NL80211_CMD_SET_MAC_ACL,
15620                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15621                 .doit = nl80211_set_mac_acl,
15622                 .flags = GENL_UNS_ADMIN_PERM,
15623                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15624         },
15625         {
15626                 .cmd = NL80211_CMD_RADAR_DETECT,
15627                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15628                 .doit = nl80211_start_radar_detection,
15629                 .flags = GENL_UNS_ADMIN_PERM,
15630                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15631         },
15632         {
15633                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15634                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15635                 .doit = nl80211_get_protocol_features,
15636         },
15637         {
15638                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15639                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15640                 .doit = nl80211_update_ft_ies,
15641                 .flags = GENL_UNS_ADMIN_PERM,
15642                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15643         },
15644         {
15645                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15646                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15647                 .doit = nl80211_crit_protocol_start,
15648                 .flags = GENL_UNS_ADMIN_PERM,
15649                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15650         },
15651         {
15652                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15653                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15654                 .doit = nl80211_crit_protocol_stop,
15655                 .flags = GENL_UNS_ADMIN_PERM,
15656                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15657         },
15658         {
15659                 .cmd = NL80211_CMD_GET_COALESCE,
15660                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15661                 .doit = nl80211_get_coalesce,
15662                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15663         },
15664         {
15665                 .cmd = NL80211_CMD_SET_COALESCE,
15666                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15667                 .doit = nl80211_set_coalesce,
15668                 .flags = GENL_UNS_ADMIN_PERM,
15669                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15670         },
15671         {
15672                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15673                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15674                 .doit = nl80211_channel_switch,
15675                 .flags = GENL_UNS_ADMIN_PERM,
15676                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15677         },
15678         {
15679                 .cmd = NL80211_CMD_VENDOR,
15680                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15681                 .doit = nl80211_vendor_cmd,
15682                 .dumpit = nl80211_vendor_cmd_dump,
15683                 .flags = GENL_UNS_ADMIN_PERM,
15684                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15685                                   0 |
15686                                   NL80211_FLAG_CLEAR_SKB,
15687         },
15688         {
15689                 .cmd = NL80211_CMD_SET_QOS_MAP,
15690                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15691                 .doit = nl80211_set_qos_map,
15692                 .flags = GENL_UNS_ADMIN_PERM,
15693                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15694         },
15695         {
15696                 .cmd = NL80211_CMD_ADD_TX_TS,
15697                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15698                 .doit = nl80211_add_tx_ts,
15699                 .flags = GENL_UNS_ADMIN_PERM,
15700                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15701         },
15702         {
15703                 .cmd = NL80211_CMD_DEL_TX_TS,
15704                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15705                 .doit = nl80211_del_tx_ts,
15706                 .flags = GENL_UNS_ADMIN_PERM,
15707                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15708         },
15709         {
15710                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15711                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15712                 .doit = nl80211_tdls_channel_switch,
15713                 .flags = GENL_UNS_ADMIN_PERM,
15714                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15715         },
15716         {
15717                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15718                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15719                 .doit = nl80211_tdls_cancel_channel_switch,
15720                 .flags = GENL_UNS_ADMIN_PERM,
15721                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15722         },
15723         {
15724                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15725                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15726                 .doit = nl80211_set_multicast_to_unicast,
15727                 .flags = GENL_UNS_ADMIN_PERM,
15728                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15729         },
15730         {
15731                 .cmd = NL80211_CMD_SET_PMK,
15732                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15733                 .doit = nl80211_set_pmk,
15734                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15735                                   0 |
15736                                   NL80211_FLAG_CLEAR_SKB,
15737         },
15738         {
15739                 .cmd = NL80211_CMD_DEL_PMK,
15740                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15741                 .doit = nl80211_del_pmk,
15742                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15743         },
15744         {
15745                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15746                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15747                 .doit = nl80211_external_auth,
15748                 .flags = GENL_ADMIN_PERM,
15749                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15750         },
15751         {
15752                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15753                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15754                 .doit = nl80211_tx_control_port,
15755                 .flags = GENL_UNS_ADMIN_PERM,
15756                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15757         },
15758         {
15759                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15760                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15761                 .doit = nl80211_get_ftm_responder_stats,
15762                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15763         },
15764         {
15765                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15766                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15767                 .doit = nl80211_pmsr_start,
15768                 .flags = GENL_UNS_ADMIN_PERM,
15769                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15770         },
15771         {
15772                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15773                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15774                 .doit = nl80211_notify_radar_detection,
15775                 .flags = GENL_UNS_ADMIN_PERM,
15776                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15777         },
15778         {
15779                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15780                 .doit = nl80211_update_owe_info,
15781                 .flags = GENL_ADMIN_PERM,
15782                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15783         },
15784         {
15785                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15786                 .doit = nl80211_probe_mesh_link,
15787                 .flags = GENL_UNS_ADMIN_PERM,
15788                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15789         },
15790         {
15791                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15792                 .doit = nl80211_set_tid_config,
15793                 .flags = GENL_UNS_ADMIN_PERM,
15794                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15795         },
15796         {
15797                 .cmd = NL80211_CMD_SET_SAR_SPECS,
15798                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15799                 .doit = nl80211_set_sar_specs,
15800                 .flags = GENL_UNS_ADMIN_PERM,
15801                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15802                                   NL80211_FLAG_NEED_RTNL,
15803         },
15804 };
15805
15806 static struct genl_family nl80211_fam __ro_after_init = {
15807         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15808         .hdrsize = 0,                   /* no private header */
15809         .version = 1,                   /* no particular meaning now */
15810         .maxattr = NL80211_ATTR_MAX,
15811         .policy = nl80211_policy,
15812         .netnsok = true,
15813         .pre_doit = nl80211_pre_doit,
15814         .post_doit = nl80211_post_doit,
15815         .module = THIS_MODULE,
15816         .ops = nl80211_ops,
15817         .n_ops = ARRAY_SIZE(nl80211_ops),
15818         .small_ops = nl80211_small_ops,
15819         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15820         .mcgrps = nl80211_mcgrps,
15821         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15822         .parallel_ops = true,
15823 };
15824
15825 /* notification functions */
15826
15827 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15828                           enum nl80211_commands cmd)
15829 {
15830         struct sk_buff *msg;
15831         struct nl80211_dump_wiphy_state state = {};
15832
15833         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15834                 cmd != NL80211_CMD_DEL_WIPHY);
15835
15836         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15837         if (!msg)
15838                 return;
15839
15840         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15841                 nlmsg_free(msg);
15842                 return;
15843         }
15844
15845         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15846                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15847 }
15848
15849 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15850                                 struct wireless_dev *wdev,
15851                                 enum nl80211_commands cmd)
15852 {
15853         struct sk_buff *msg;
15854
15855         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15856         if (!msg)
15857                 return;
15858
15859         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15860                 nlmsg_free(msg);
15861                 return;
15862         }
15863
15864         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15865                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15866 }
15867
15868 static int nl80211_add_scan_req(struct sk_buff *msg,
15869                                 struct cfg80211_registered_device *rdev)
15870 {
15871         struct cfg80211_scan_request *req = rdev->scan_req;
15872         struct nlattr *nest;
15873         int i;
15874         struct cfg80211_scan_info *info;
15875
15876         if (WARN_ON(!req))
15877                 return 0;
15878
15879         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15880         if (!nest)
15881                 goto nla_put_failure;
15882         for (i = 0; i < req->n_ssids; i++) {
15883                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15884                         goto nla_put_failure;
15885         }
15886         nla_nest_end(msg, nest);
15887
15888         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15889                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15890                 if (!nest)
15891                         goto nla_put_failure;
15892                 for (i = 0; i < req->n_channels; i++) {
15893                         if (nla_put_u32(msg, i,
15894                                    ieee80211_channel_to_khz(req->channels[i])))
15895                                 goto nla_put_failure;
15896                 }
15897                 nla_nest_end(msg, nest);
15898         } else {
15899                 nest = nla_nest_start_noflag(msg,
15900                                              NL80211_ATTR_SCAN_FREQUENCIES);
15901                 if (!nest)
15902                         goto nla_put_failure;
15903                 for (i = 0; i < req->n_channels; i++) {
15904                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15905                                 goto nla_put_failure;
15906                 }
15907                 nla_nest_end(msg, nest);
15908         }
15909
15910         if (req->ie &&
15911             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15912                 goto nla_put_failure;
15913
15914         if (req->flags &&
15915             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15916                 goto nla_put_failure;
15917
15918         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15919                 &rdev->scan_req->info;
15920         if (info->scan_start_tsf &&
15921             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15922                                info->scan_start_tsf, NL80211_BSS_PAD) ||
15923              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15924                      info->tsf_bssid)))
15925                 goto nla_put_failure;
15926
15927         return 0;
15928  nla_put_failure:
15929         return -ENOBUFS;
15930 }
15931
15932 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15933                                  struct cfg80211_registered_device *rdev,
15934                                  struct wireless_dev *wdev,
15935                                  u32 portid, u32 seq, int flags,
15936                                  u32 cmd)
15937 {
15938         void *hdr;
15939
15940         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15941         if (!hdr)
15942                 return -1;
15943
15944         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15945             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15946                                          wdev->netdev->ifindex)) ||
15947             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15948                               NL80211_ATTR_PAD))
15949                 goto nla_put_failure;
15950
15951         /* ignore errors and send incomplete event anyway */
15952         nl80211_add_scan_req(msg, rdev);
15953
15954         genlmsg_end(msg, hdr);
15955         return 0;
15956
15957  nla_put_failure:
15958         genlmsg_cancel(msg, hdr);
15959         return -EMSGSIZE;
15960 }
15961
15962 static int
15963 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15964                             struct cfg80211_sched_scan_request *req, u32 cmd)
15965 {
15966         void *hdr;
15967
15968         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15969         if (!hdr)
15970                 return -1;
15971
15972         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15973                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15974             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15975             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15976                               NL80211_ATTR_PAD))
15977                 goto nla_put_failure;
15978
15979         genlmsg_end(msg, hdr);
15980         return 0;
15981
15982  nla_put_failure:
15983         genlmsg_cancel(msg, hdr);
15984         return -EMSGSIZE;
15985 }
15986
15987 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15988                              struct wireless_dev *wdev)
15989 {
15990         struct sk_buff *msg;
15991
15992         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15993         if (!msg)
15994                 return;
15995
15996         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15997                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15998                 nlmsg_free(msg);
15999                 return;
16000         }
16001
16002         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16003                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16004 }
16005
16006 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
16007                                        struct wireless_dev *wdev, bool aborted)
16008 {
16009         struct sk_buff *msg;
16010
16011         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16012         if (!msg)
16013                 return NULL;
16014
16015         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
16016                                   aborted ? NL80211_CMD_SCAN_ABORTED :
16017                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
16018                 nlmsg_free(msg);
16019                 return NULL;
16020         }
16021
16022         return msg;
16023 }
16024
16025 /* send message created by nl80211_build_scan_msg() */
16026 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
16027                            struct sk_buff *msg)
16028 {
16029         if (!msg)
16030                 return;
16031
16032         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16033                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16034 }
16035
16036 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
16037 {
16038         struct sk_buff *msg;
16039
16040         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16041         if (!msg)
16042                 return;
16043
16044         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
16045                 nlmsg_free(msg);
16046                 return;
16047         }
16048
16049         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
16050                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16051 }
16052
16053 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
16054                                           struct regulatory_request *request)
16055 {
16056         /* Userspace can always count this one always being set */
16057         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
16058                 goto nla_put_failure;
16059
16060         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
16061                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16062                                NL80211_REGDOM_TYPE_WORLD))
16063                         goto nla_put_failure;
16064         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
16065                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16066                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
16067                         goto nla_put_failure;
16068         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
16069                    request->intersect) {
16070                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16071                                NL80211_REGDOM_TYPE_INTERSECTION))
16072                         goto nla_put_failure;
16073         } else {
16074                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16075                                NL80211_REGDOM_TYPE_COUNTRY) ||
16076                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
16077                                    request->alpha2))
16078                         goto nla_put_failure;
16079         }
16080
16081         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
16082                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
16083
16084                 if (wiphy &&
16085                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
16086                         goto nla_put_failure;
16087
16088                 if (wiphy &&
16089                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
16090                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
16091                         goto nla_put_failure;
16092         }
16093
16094         return true;
16095
16096 nla_put_failure:
16097         return false;
16098 }
16099
16100 /*
16101  * This can happen on global regulatory changes or device specific settings
16102  * based on custom regulatory domains.
16103  */
16104 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
16105                                      struct regulatory_request *request)
16106 {
16107         struct sk_buff *msg;
16108         void *hdr;
16109
16110         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16111         if (!msg)
16112                 return;
16113
16114         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
16115         if (!hdr)
16116                 goto nla_put_failure;
16117
16118         if (!nl80211_reg_change_event_fill(msg, request))
16119                 goto nla_put_failure;
16120
16121         genlmsg_end(msg, hdr);
16122
16123         rcu_read_lock();
16124         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16125                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16126         rcu_read_unlock();
16127
16128         return;
16129
16130 nla_put_failure:
16131         nlmsg_free(msg);
16132 }
16133
16134 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
16135                                     struct net_device *netdev,
16136                                     const u8 *buf, size_t len,
16137                                     enum nl80211_commands cmd, gfp_t gfp,
16138                                     int uapsd_queues, const u8 *req_ies,
16139                                     size_t req_ies_len, bool reconnect)
16140 {
16141         struct sk_buff *msg;
16142         void *hdr;
16143
16144         msg = nlmsg_new(100 + len + req_ies_len, gfp);
16145         if (!msg)
16146                 return;
16147
16148         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16149         if (!hdr) {
16150                 nlmsg_free(msg);
16151                 return;
16152         }
16153
16154         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16155             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16156             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16157             (req_ies &&
16158              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
16159                 goto nla_put_failure;
16160
16161         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
16162                 goto nla_put_failure;
16163
16164         if (uapsd_queues >= 0) {
16165                 struct nlattr *nla_wmm =
16166                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
16167                 if (!nla_wmm)
16168                         goto nla_put_failure;
16169
16170                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
16171                                uapsd_queues))
16172                         goto nla_put_failure;
16173
16174                 nla_nest_end(msg, nla_wmm);
16175         }
16176
16177         genlmsg_end(msg, hdr);
16178
16179         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16180                                 NL80211_MCGRP_MLME, gfp);
16181         return;
16182
16183  nla_put_failure:
16184         nlmsg_free(msg);
16185 }
16186
16187 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
16188                           struct net_device *netdev, const u8 *buf,
16189                           size_t len, gfp_t gfp)
16190 {
16191         nl80211_send_mlme_event(rdev, netdev, buf, len,
16192                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
16193                                 false);
16194 }
16195
16196 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
16197                            struct net_device *netdev, const u8 *buf,
16198                            size_t len, gfp_t gfp, int uapsd_queues,
16199                            const u8 *req_ies, size_t req_ies_len)
16200 {
16201         nl80211_send_mlme_event(rdev, netdev, buf, len,
16202                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
16203                                 req_ies, req_ies_len, false);
16204 }
16205
16206 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
16207                          struct net_device *netdev, const u8 *buf,
16208                          size_t len, bool reconnect, gfp_t gfp)
16209 {
16210         nl80211_send_mlme_event(rdev, netdev, buf, len,
16211                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
16212                                 reconnect);
16213 }
16214
16215 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
16216                            struct net_device *netdev, const u8 *buf,
16217                            size_t len, bool reconnect, gfp_t gfp)
16218 {
16219         nl80211_send_mlme_event(rdev, netdev, buf, len,
16220                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
16221                                 reconnect);
16222 }
16223
16224 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
16225                                   size_t len)
16226 {
16227         struct wireless_dev *wdev = dev->ieee80211_ptr;
16228         struct wiphy *wiphy = wdev->wiphy;
16229         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16230         const struct ieee80211_mgmt *mgmt = (void *)buf;
16231         u32 cmd;
16232
16233         if (WARN_ON(len < 2))
16234                 return;
16235
16236         if (ieee80211_is_deauth(mgmt->frame_control)) {
16237                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
16238         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
16239                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
16240         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
16241                 if (wdev->unprot_beacon_reported &&
16242                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
16243                         return;
16244                 cmd = NL80211_CMD_UNPROT_BEACON;
16245                 wdev->unprot_beacon_reported = jiffies;
16246         } else {
16247                 return;
16248         }
16249
16250         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
16251         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
16252                                 NULL, 0, false);
16253 }
16254 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
16255
16256 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
16257                                       struct net_device *netdev, int cmd,
16258                                       const u8 *addr, gfp_t gfp)
16259 {
16260         struct sk_buff *msg;
16261         void *hdr;
16262
16263         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16264         if (!msg)
16265                 return;
16266
16267         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16268         if (!hdr) {
16269                 nlmsg_free(msg);
16270                 return;
16271         }
16272
16273         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16274             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16275             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16276             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16277                 goto nla_put_failure;
16278
16279         genlmsg_end(msg, hdr);
16280
16281         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16282                                 NL80211_MCGRP_MLME, gfp);
16283         return;
16284
16285  nla_put_failure:
16286         nlmsg_free(msg);
16287 }
16288
16289 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16290                                struct net_device *netdev, const u8 *addr,
16291                                gfp_t gfp)
16292 {
16293         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16294                                   addr, gfp);
16295 }
16296
16297 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16298                                 struct net_device *netdev, const u8 *addr,
16299                                 gfp_t gfp)
16300 {
16301         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16302                                   addr, gfp);
16303 }
16304
16305 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16306                                  struct net_device *netdev,
16307                                  struct cfg80211_connect_resp_params *cr,
16308                                  gfp_t gfp)
16309 {
16310         struct sk_buff *msg;
16311         void *hdr;
16312
16313         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16314                         cr->fils.kek_len + cr->fils.pmk_len +
16315                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16316         if (!msg)
16317                 return;
16318
16319         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16320         if (!hdr) {
16321                 nlmsg_free(msg);
16322                 return;
16323         }
16324
16325         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16326             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16327             (cr->bssid &&
16328              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16329             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16330                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16331                         cr->status) ||
16332             (cr->status < 0 &&
16333              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16334               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16335                           cr->timeout_reason))) ||
16336             (cr->req_ie &&
16337              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16338             (cr->resp_ie &&
16339              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16340                      cr->resp_ie)) ||
16341             (cr->fils.update_erp_next_seq_num &&
16342              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16343                          cr->fils.erp_next_seq_num)) ||
16344             (cr->status == WLAN_STATUS_SUCCESS &&
16345              ((cr->fils.kek &&
16346                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16347                        cr->fils.kek)) ||
16348               (cr->fils.pmk &&
16349                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16350               (cr->fils.pmkid &&
16351                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16352                 goto nla_put_failure;
16353
16354         genlmsg_end(msg, hdr);
16355
16356         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16357                                 NL80211_MCGRP_MLME, gfp);
16358         return;
16359
16360  nla_put_failure:
16361         nlmsg_free(msg);
16362 }
16363
16364 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16365                          struct net_device *netdev,
16366                          struct cfg80211_roam_info *info, gfp_t gfp)
16367 {
16368         struct sk_buff *msg;
16369         void *hdr;
16370         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16371
16372         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16373                         info->fils.kek_len + info->fils.pmk_len +
16374                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16375         if (!msg)
16376                 return;
16377
16378         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16379         if (!hdr) {
16380                 nlmsg_free(msg);
16381                 return;
16382         }
16383
16384         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16385             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16386             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16387             (info->req_ie &&
16388              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16389                      info->req_ie)) ||
16390             (info->resp_ie &&
16391              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16392                      info->resp_ie)) ||
16393             (info->fils.update_erp_next_seq_num &&
16394              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16395                          info->fils.erp_next_seq_num)) ||
16396             (info->fils.kek &&
16397              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16398                      info->fils.kek)) ||
16399             (info->fils.pmk &&
16400              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16401             (info->fils.pmkid &&
16402              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16403                 goto nla_put_failure;
16404
16405         genlmsg_end(msg, hdr);
16406
16407         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16408                                 NL80211_MCGRP_MLME, gfp);
16409         return;
16410
16411  nla_put_failure:
16412         nlmsg_free(msg);
16413 }
16414
16415 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16416                                   struct net_device *netdev, const u8 *bssid)
16417 {
16418         struct sk_buff *msg;
16419         void *hdr;
16420
16421         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16422         if (!msg)
16423                 return;
16424
16425         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16426         if (!hdr) {
16427                 nlmsg_free(msg);
16428                 return;
16429         }
16430
16431         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16432             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16433             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16434                 goto nla_put_failure;
16435
16436         genlmsg_end(msg, hdr);
16437
16438         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16439                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16440         return;
16441
16442  nla_put_failure:
16443         nlmsg_free(msg);
16444 }
16445
16446 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16447                                struct net_device *netdev, u16 reason,
16448                                const u8 *ie, size_t ie_len, bool from_ap)
16449 {
16450         struct sk_buff *msg;
16451         void *hdr;
16452
16453         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16454         if (!msg)
16455                 return;
16456
16457         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16458         if (!hdr) {
16459                 nlmsg_free(msg);
16460                 return;
16461         }
16462
16463         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16464             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16465             (reason &&
16466              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16467             (from_ap &&
16468              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16469             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16470                 goto nla_put_failure;
16471
16472         genlmsg_end(msg, hdr);
16473
16474         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16475                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16476         return;
16477
16478  nla_put_failure:
16479         nlmsg_free(msg);
16480 }
16481
16482 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16483                              struct net_device *netdev, const u8 *bssid,
16484                              gfp_t gfp)
16485 {
16486         struct sk_buff *msg;
16487         void *hdr;
16488
16489         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16490         if (!msg)
16491                 return;
16492
16493         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16494         if (!hdr) {
16495                 nlmsg_free(msg);
16496                 return;
16497         }
16498
16499         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16500             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16501             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16502                 goto nla_put_failure;
16503
16504         genlmsg_end(msg, hdr);
16505
16506         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16507                                 NL80211_MCGRP_MLME, gfp);
16508         return;
16509
16510  nla_put_failure:
16511         nlmsg_free(msg);
16512 }
16513
16514 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16515                                         const u8 *ie, u8 ie_len,
16516                                         int sig_dbm, gfp_t gfp)
16517 {
16518         struct wireless_dev *wdev = dev->ieee80211_ptr;
16519         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16520         struct sk_buff *msg;
16521         void *hdr;
16522
16523         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16524                 return;
16525
16526         trace_cfg80211_notify_new_peer_candidate(dev, addr);
16527
16528         msg = nlmsg_new(100 + ie_len, gfp);
16529         if (!msg)
16530                 return;
16531
16532         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16533         if (!hdr) {
16534                 nlmsg_free(msg);
16535                 return;
16536         }
16537
16538         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16539             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16540             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16541             (ie_len && ie &&
16542              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16543             (sig_dbm &&
16544              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16545                 goto nla_put_failure;
16546
16547         genlmsg_end(msg, hdr);
16548
16549         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16550                                 NL80211_MCGRP_MLME, gfp);
16551         return;
16552
16553  nla_put_failure:
16554         nlmsg_free(msg);
16555 }
16556 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16557
16558 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16559                                  struct net_device *netdev, const u8 *addr,
16560                                  enum nl80211_key_type key_type, int key_id,
16561                                  const u8 *tsc, gfp_t gfp)
16562 {
16563         struct sk_buff *msg;
16564         void *hdr;
16565
16566         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16567         if (!msg)
16568                 return;
16569
16570         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16571         if (!hdr) {
16572                 nlmsg_free(msg);
16573                 return;
16574         }
16575
16576         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16577             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16578             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16579             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16580             (key_id != -1 &&
16581              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16582             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16583                 goto nla_put_failure;
16584
16585         genlmsg_end(msg, hdr);
16586
16587         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16588                                 NL80211_MCGRP_MLME, gfp);
16589         return;
16590
16591  nla_put_failure:
16592         nlmsg_free(msg);
16593 }
16594
16595 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16596                                     struct ieee80211_channel *channel_before,
16597                                     struct ieee80211_channel *channel_after)
16598 {
16599         struct sk_buff *msg;
16600         void *hdr;
16601         struct nlattr *nl_freq;
16602
16603         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16604         if (!msg)
16605                 return;
16606
16607         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16608         if (!hdr) {
16609                 nlmsg_free(msg);
16610                 return;
16611         }
16612
16613         /*
16614          * Since we are applying the beacon hint to a wiphy we know its
16615          * wiphy_idx is valid
16616          */
16617         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16618                 goto nla_put_failure;
16619
16620         /* Before */
16621         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16622         if (!nl_freq)
16623                 goto nla_put_failure;
16624
16625         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16626                 goto nla_put_failure;
16627         nla_nest_end(msg, nl_freq);
16628
16629         /* After */
16630         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16631         if (!nl_freq)
16632                 goto nla_put_failure;
16633
16634         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16635                 goto nla_put_failure;
16636         nla_nest_end(msg, nl_freq);
16637
16638         genlmsg_end(msg, hdr);
16639
16640         rcu_read_lock();
16641         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16642                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16643         rcu_read_unlock();
16644
16645         return;
16646
16647 nla_put_failure:
16648         nlmsg_free(msg);
16649 }
16650
16651 static void nl80211_send_remain_on_chan_event(
16652         int cmd, struct cfg80211_registered_device *rdev,
16653         struct wireless_dev *wdev, u64 cookie,
16654         struct ieee80211_channel *chan,
16655         unsigned int duration, gfp_t gfp)
16656 {
16657         struct sk_buff *msg;
16658         void *hdr;
16659
16660         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16661         if (!msg)
16662                 return;
16663
16664         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16665         if (!hdr) {
16666                 nlmsg_free(msg);
16667                 return;
16668         }
16669
16670         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16671             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16672                                          wdev->netdev->ifindex)) ||
16673             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16674                               NL80211_ATTR_PAD) ||
16675             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16676             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16677                         NL80211_CHAN_NO_HT) ||
16678             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16679                               NL80211_ATTR_PAD))
16680                 goto nla_put_failure;
16681
16682         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16683             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16684                 goto nla_put_failure;
16685
16686         genlmsg_end(msg, hdr);
16687
16688         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16689                                 NL80211_MCGRP_MLME, gfp);
16690         return;
16691
16692  nla_put_failure:
16693         nlmsg_free(msg);
16694 }
16695
16696 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16697                                struct ieee80211_channel *chan,
16698                                unsigned int duration, gfp_t gfp)
16699 {
16700         struct wiphy *wiphy = wdev->wiphy;
16701         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16702
16703         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16704         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16705                                           rdev, wdev, cookie, chan,
16706                                           duration, gfp);
16707 }
16708 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16709
16710 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16711                                         struct ieee80211_channel *chan,
16712                                         gfp_t gfp)
16713 {
16714         struct wiphy *wiphy = wdev->wiphy;
16715         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16716
16717         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16718         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16719                                           rdev, wdev, cookie, chan, 0, gfp);
16720 }
16721 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16722
16723 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16724                                         struct ieee80211_channel *chan,
16725                                         gfp_t gfp)
16726 {
16727         struct wiphy *wiphy = wdev->wiphy;
16728         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16729
16730         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16731         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16732                                           rdev, wdev, cookie, chan, 0, gfp);
16733 }
16734 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16735
16736 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16737                       struct station_info *sinfo, gfp_t gfp)
16738 {
16739         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16740         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16741         struct sk_buff *msg;
16742
16743         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16744
16745         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16746         if (!msg)
16747                 return;
16748
16749         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16750                                  rdev, dev, mac_addr, sinfo) < 0) {
16751                 nlmsg_free(msg);
16752                 return;
16753         }
16754
16755         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16756                                 NL80211_MCGRP_MLME, gfp);
16757 }
16758 EXPORT_SYMBOL(cfg80211_new_sta);
16759
16760 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16761                             struct station_info *sinfo, gfp_t gfp)
16762 {
16763         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16764         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16765         struct sk_buff *msg;
16766         struct station_info empty_sinfo = {};
16767
16768         if (!sinfo)
16769                 sinfo = &empty_sinfo;
16770
16771         trace_cfg80211_del_sta(dev, mac_addr);
16772
16773         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16774         if (!msg) {
16775                 cfg80211_sinfo_release_content(sinfo);
16776                 return;
16777         }
16778
16779         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16780                                  rdev, dev, mac_addr, sinfo) < 0) {
16781                 nlmsg_free(msg);
16782                 return;
16783         }
16784
16785         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16786                                 NL80211_MCGRP_MLME, gfp);
16787 }
16788 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16789
16790 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16791                           enum nl80211_connect_failed_reason reason,
16792                           gfp_t gfp)
16793 {
16794         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16795         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16796         struct sk_buff *msg;
16797         void *hdr;
16798
16799         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16800         if (!msg)
16801                 return;
16802
16803         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16804         if (!hdr) {
16805                 nlmsg_free(msg);
16806                 return;
16807         }
16808
16809         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16810             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16811             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16812                 goto nla_put_failure;
16813
16814         genlmsg_end(msg, hdr);
16815
16816         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16817                                 NL80211_MCGRP_MLME, gfp);
16818         return;
16819
16820  nla_put_failure:
16821         nlmsg_free(msg);
16822 }
16823 EXPORT_SYMBOL(cfg80211_conn_failed);
16824
16825 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16826                                        const u8 *addr, gfp_t gfp)
16827 {
16828         struct wireless_dev *wdev = dev->ieee80211_ptr;
16829         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16830         struct sk_buff *msg;
16831         void *hdr;
16832         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16833
16834         if (!nlportid)
16835                 return false;
16836
16837         msg = nlmsg_new(100, gfp);
16838         if (!msg)
16839                 return true;
16840
16841         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16842         if (!hdr) {
16843                 nlmsg_free(msg);
16844                 return true;
16845         }
16846
16847         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16848             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16849             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16850                 goto nla_put_failure;
16851
16852         genlmsg_end(msg, hdr);
16853         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16854         return true;
16855
16856  nla_put_failure:
16857         nlmsg_free(msg);
16858         return true;
16859 }
16860
16861 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16862                                 const u8 *addr, gfp_t gfp)
16863 {
16864         struct wireless_dev *wdev = dev->ieee80211_ptr;
16865         bool ret;
16866
16867         trace_cfg80211_rx_spurious_frame(dev, addr);
16868
16869         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16870                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16871                 trace_cfg80211_return_bool(false);
16872                 return false;
16873         }
16874         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16875                                          addr, gfp);
16876         trace_cfg80211_return_bool(ret);
16877         return ret;
16878 }
16879 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16880
16881 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16882                                         const u8 *addr, gfp_t gfp)
16883 {
16884         struct wireless_dev *wdev = dev->ieee80211_ptr;
16885         bool ret;
16886
16887         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16888
16889         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16890                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16891                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16892                 trace_cfg80211_return_bool(false);
16893                 return false;
16894         }
16895         ret = __nl80211_unexpected_frame(dev,
16896                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16897                                          addr, gfp);
16898         trace_cfg80211_return_bool(ret);
16899         return ret;
16900 }
16901 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16902
16903 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16904                       struct wireless_dev *wdev, u32 nlportid,
16905                       int freq, int sig_dbm,
16906                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16907 {
16908         struct net_device *netdev = wdev->netdev;
16909         struct sk_buff *msg;
16910         void *hdr;
16911
16912         msg = nlmsg_new(100 + len, gfp);
16913         if (!msg)
16914                 return -ENOMEM;
16915
16916         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16917         if (!hdr) {
16918                 nlmsg_free(msg);
16919                 return -ENOMEM;
16920         }
16921
16922         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16923             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16924                                         netdev->ifindex)) ||
16925             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16926                               NL80211_ATTR_PAD) ||
16927             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16928             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16929             (sig_dbm &&
16930              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16931             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16932             (flags &&
16933              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16934                 goto nla_put_failure;
16935
16936         genlmsg_end(msg, hdr);
16937
16938         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16939
16940  nla_put_failure:
16941         nlmsg_free(msg);
16942         return -ENOBUFS;
16943 }
16944
16945 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16946                                     const u8 *buf, size_t len, bool ack,
16947                                     gfp_t gfp, enum nl80211_commands command)
16948 {
16949         struct wiphy *wiphy = wdev->wiphy;
16950         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16951         struct net_device *netdev = wdev->netdev;
16952         struct sk_buff *msg;
16953         void *hdr;
16954
16955         if (command == NL80211_CMD_FRAME_TX_STATUS)
16956                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16957         else
16958                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16959
16960         msg = nlmsg_new(100 + len, gfp);
16961         if (!msg)
16962                 return;
16963
16964         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16965         if (!hdr) {
16966                 nlmsg_free(msg);
16967                 return;
16968         }
16969
16970         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16971             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16972                                    netdev->ifindex)) ||
16973             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16974                               NL80211_ATTR_PAD) ||
16975             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16976             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16977                               NL80211_ATTR_PAD) ||
16978             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16979                 goto nla_put_failure;
16980
16981         genlmsg_end(msg, hdr);
16982
16983         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16984                                 NL80211_MCGRP_MLME, gfp);
16985         return;
16986
16987 nla_put_failure:
16988         nlmsg_free(msg);
16989 }
16990
16991 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16992                                      const u8 *buf, size_t len, bool ack,
16993                                      gfp_t gfp)
16994 {
16995         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16996                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16997 }
16998 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16999
17000 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
17001                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
17002 {
17003         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
17004                                 NL80211_CMD_FRAME_TX_STATUS);
17005 }
17006 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
17007
17008 static int __nl80211_rx_control_port(struct net_device *dev,
17009                                      struct sk_buff *skb,
17010                                      bool unencrypted, gfp_t gfp)
17011 {
17012         struct wireless_dev *wdev = dev->ieee80211_ptr;
17013         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17014         struct ethhdr *ehdr = eth_hdr(skb);
17015         const u8 *addr = ehdr->h_source;
17016         u16 proto = be16_to_cpu(skb->protocol);
17017         struct sk_buff *msg;
17018         void *hdr;
17019         struct nlattr *frame;
17020
17021         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
17022
17023         if (!nlportid)
17024                 return -ENOENT;
17025
17026         msg = nlmsg_new(100 + skb->len, gfp);
17027         if (!msg)
17028                 return -ENOMEM;
17029
17030         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
17031         if (!hdr) {
17032                 nlmsg_free(msg);
17033                 return -ENOBUFS;
17034         }
17035
17036         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17037             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17038             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17039                               NL80211_ATTR_PAD) ||
17040             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17041             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
17042             (unencrypted && nla_put_flag(msg,
17043                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
17044                 goto nla_put_failure;
17045
17046         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
17047         if (!frame)
17048                 goto nla_put_failure;
17049
17050         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
17051         genlmsg_end(msg, hdr);
17052
17053         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17054
17055  nla_put_failure:
17056         nlmsg_free(msg);
17057         return -ENOBUFS;
17058 }
17059
17060 bool cfg80211_rx_control_port(struct net_device *dev,
17061                               struct sk_buff *skb, bool unencrypted)
17062 {
17063         int ret;
17064
17065         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
17066         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
17067         trace_cfg80211_return_bool(ret == 0);
17068         return ret == 0;
17069 }
17070 EXPORT_SYMBOL(cfg80211_rx_control_port);
17071
17072 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
17073                                             const char *mac, gfp_t gfp)
17074 {
17075         struct wireless_dev *wdev = dev->ieee80211_ptr;
17076         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17077         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17078         void **cb;
17079
17080         if (!msg)
17081                 return NULL;
17082
17083         cb = (void **)msg->cb;
17084
17085         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
17086         if (!cb[0]) {
17087                 nlmsg_free(msg);
17088                 return NULL;
17089         }
17090
17091         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17092             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17093                 goto nla_put_failure;
17094
17095         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17096                 goto nla_put_failure;
17097
17098         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
17099         if (!cb[1])
17100                 goto nla_put_failure;
17101
17102         cb[2] = rdev;
17103
17104         return msg;
17105  nla_put_failure:
17106         nlmsg_free(msg);
17107         return NULL;
17108 }
17109
17110 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
17111 {
17112         void **cb = (void **)msg->cb;
17113         struct cfg80211_registered_device *rdev = cb[2];
17114
17115         nla_nest_end(msg, cb[1]);
17116         genlmsg_end(msg, cb[0]);
17117
17118         memset(msg->cb, 0, sizeof(msg->cb));
17119
17120         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17121                                 NL80211_MCGRP_MLME, gfp);
17122 }
17123
17124 void cfg80211_cqm_rssi_notify(struct net_device *dev,
17125                               enum nl80211_cqm_rssi_threshold_event rssi_event,
17126                               s32 rssi_level, gfp_t gfp)
17127 {
17128         struct sk_buff *msg;
17129         struct wireless_dev *wdev = dev->ieee80211_ptr;
17130         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17131
17132         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
17133
17134         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
17135                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
17136                 return;
17137
17138         if (wdev->cqm_config) {
17139                 wdev->cqm_config->last_rssi_event_value = rssi_level;
17140
17141                 cfg80211_cqm_rssi_update(rdev, dev);
17142
17143                 if (rssi_level == 0)
17144                         rssi_level = wdev->cqm_config->last_rssi_event_value;
17145         }
17146
17147         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17148         if (!msg)
17149                 return;
17150
17151         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
17152                         rssi_event))
17153                 goto nla_put_failure;
17154
17155         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
17156                                       rssi_level))
17157                 goto nla_put_failure;
17158
17159         cfg80211_send_cqm(msg, gfp);
17160
17161         return;
17162
17163  nla_put_failure:
17164         nlmsg_free(msg);
17165 }
17166 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
17167
17168 void cfg80211_cqm_txe_notify(struct net_device *dev,
17169                              const u8 *peer, u32 num_packets,
17170                              u32 rate, u32 intvl, gfp_t gfp)
17171 {
17172         struct sk_buff *msg;
17173
17174         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17175         if (!msg)
17176                 return;
17177
17178         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
17179                 goto nla_put_failure;
17180
17181         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
17182                 goto nla_put_failure;
17183
17184         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
17185                 goto nla_put_failure;
17186
17187         cfg80211_send_cqm(msg, gfp);
17188         return;
17189
17190  nla_put_failure:
17191         nlmsg_free(msg);
17192 }
17193 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
17194
17195 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
17196                                  const u8 *peer, u32 num_packets, gfp_t gfp)
17197 {
17198         struct sk_buff *msg;
17199
17200         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
17201
17202         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17203         if (!msg)
17204                 return;
17205
17206         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
17207                 goto nla_put_failure;
17208
17209         cfg80211_send_cqm(msg, gfp);
17210         return;
17211
17212  nla_put_failure:
17213         nlmsg_free(msg);
17214 }
17215 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
17216
17217 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
17218 {
17219         struct sk_buff *msg;
17220
17221         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17222         if (!msg)
17223                 return;
17224
17225         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
17226                 goto nla_put_failure;
17227
17228         cfg80211_send_cqm(msg, gfp);
17229         return;
17230
17231  nla_put_failure:
17232         nlmsg_free(msg);
17233 }
17234 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
17235
17236 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
17237                                      struct net_device *netdev, const u8 *bssid,
17238                                      const u8 *replay_ctr, gfp_t gfp)
17239 {
17240         struct sk_buff *msg;
17241         struct nlattr *rekey_attr;
17242         void *hdr;
17243
17244         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17245         if (!msg)
17246                 return;
17247
17248         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
17249         if (!hdr) {
17250                 nlmsg_free(msg);
17251                 return;
17252         }
17253
17254         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17255             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17256             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17257                 goto nla_put_failure;
17258
17259         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
17260         if (!rekey_attr)
17261                 goto nla_put_failure;
17262
17263         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
17264                     NL80211_REPLAY_CTR_LEN, replay_ctr))
17265                 goto nla_put_failure;
17266
17267         nla_nest_end(msg, rekey_attr);
17268
17269         genlmsg_end(msg, hdr);
17270
17271         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17272                                 NL80211_MCGRP_MLME, gfp);
17273         return;
17274
17275  nla_put_failure:
17276         nlmsg_free(msg);
17277 }
17278
17279 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
17280                                const u8 *replay_ctr, gfp_t gfp)
17281 {
17282         struct wireless_dev *wdev = dev->ieee80211_ptr;
17283         struct wiphy *wiphy = wdev->wiphy;
17284         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17285
17286         trace_cfg80211_gtk_rekey_notify(dev, bssid);
17287         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17288 }
17289 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17290
17291 static void
17292 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17293                                struct net_device *netdev, int index,
17294                                const u8 *bssid, bool preauth, gfp_t gfp)
17295 {
17296         struct sk_buff *msg;
17297         struct nlattr *attr;
17298         void *hdr;
17299
17300         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17301         if (!msg)
17302                 return;
17303
17304         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17305         if (!hdr) {
17306                 nlmsg_free(msg);
17307                 return;
17308         }
17309
17310         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17311             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17312                 goto nla_put_failure;
17313
17314         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17315         if (!attr)
17316                 goto nla_put_failure;
17317
17318         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17319             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17320             (preauth &&
17321              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17322                 goto nla_put_failure;
17323
17324         nla_nest_end(msg, attr);
17325
17326         genlmsg_end(msg, hdr);
17327
17328         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17329                                 NL80211_MCGRP_MLME, gfp);
17330         return;
17331
17332  nla_put_failure:
17333         nlmsg_free(msg);
17334 }
17335
17336 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17337                                      const u8 *bssid, bool preauth, gfp_t gfp)
17338 {
17339         struct wireless_dev *wdev = dev->ieee80211_ptr;
17340         struct wiphy *wiphy = wdev->wiphy;
17341         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17342
17343         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17344         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17345 }
17346 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17347
17348 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17349                                      struct net_device *netdev,
17350                                      struct cfg80211_chan_def *chandef,
17351                                      gfp_t gfp,
17352                                      enum nl80211_commands notif,
17353                                      u8 count, bool quiet)
17354 {
17355         struct sk_buff *msg;
17356         void *hdr;
17357
17358         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17359         if (!msg)
17360                 return;
17361
17362         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17363         if (!hdr) {
17364                 nlmsg_free(msg);
17365                 return;
17366         }
17367
17368         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17369                 goto nla_put_failure;
17370
17371         if (nl80211_send_chandef(msg, chandef))
17372                 goto nla_put_failure;
17373
17374         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
17375                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
17376                         goto nla_put_failure;
17377                 if (quiet &&
17378                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
17379                         goto nla_put_failure;
17380         }
17381
17382         genlmsg_end(msg, hdr);
17383
17384         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17385                                 NL80211_MCGRP_MLME, gfp);
17386         return;
17387
17388  nla_put_failure:
17389         nlmsg_free(msg);
17390 }
17391
17392 void cfg80211_ch_switch_notify(struct net_device *dev,
17393                                struct cfg80211_chan_def *chandef)
17394 {
17395         struct wireless_dev *wdev = dev->ieee80211_ptr;
17396         struct wiphy *wiphy = wdev->wiphy;
17397         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17398
17399         ASSERT_WDEV_LOCK(wdev);
17400
17401         trace_cfg80211_ch_switch_notify(dev, chandef);
17402
17403         wdev->chandef = *chandef;
17404         wdev->preset_chandef = *chandef;
17405
17406         if (wdev->iftype == NL80211_IFTYPE_STATION &&
17407             !WARN_ON(!wdev->current_bss))
17408                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17409
17410         cfg80211_sched_dfs_chan_update(rdev);
17411
17412         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17413                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
17414 }
17415 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17416
17417 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17418                                        struct cfg80211_chan_def *chandef,
17419                                        u8 count, bool quiet)
17420 {
17421         struct wireless_dev *wdev = dev->ieee80211_ptr;
17422         struct wiphy *wiphy = wdev->wiphy;
17423         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17424
17425         trace_cfg80211_ch_switch_started_notify(dev, chandef);
17426
17427         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17428                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
17429                                  count, quiet);
17430 }
17431 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17432
17433 void
17434 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17435                      const struct cfg80211_chan_def *chandef,
17436                      enum nl80211_radar_event event,
17437                      struct net_device *netdev, gfp_t gfp)
17438 {
17439         struct sk_buff *msg;
17440         void *hdr;
17441
17442         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17443         if (!msg)
17444                 return;
17445
17446         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17447         if (!hdr) {
17448                 nlmsg_free(msg);
17449                 return;
17450         }
17451
17452         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17453                 goto nla_put_failure;
17454
17455         /* NOP and radar events don't need a netdev parameter */
17456         if (netdev) {
17457                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17458
17459                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17460                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17461                                       NL80211_ATTR_PAD))
17462                         goto nla_put_failure;
17463         }
17464
17465         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17466                 goto nla_put_failure;
17467
17468         if (nl80211_send_chandef(msg, chandef))
17469                 goto nla_put_failure;
17470
17471         genlmsg_end(msg, hdr);
17472
17473         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17474                                 NL80211_MCGRP_MLME, gfp);
17475         return;
17476
17477  nla_put_failure:
17478         nlmsg_free(msg);
17479 }
17480
17481 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17482                                        struct sta_opmode_info *sta_opmode,
17483                                        gfp_t gfp)
17484 {
17485         struct sk_buff *msg;
17486         struct wireless_dev *wdev = dev->ieee80211_ptr;
17487         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17488         void *hdr;
17489
17490         if (WARN_ON(!mac))
17491                 return;
17492
17493         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17494         if (!msg)
17495                 return;
17496
17497         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17498         if (!hdr) {
17499                 nlmsg_free(msg);
17500                 return;
17501         }
17502
17503         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17504                 goto nla_put_failure;
17505
17506         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17507                 goto nla_put_failure;
17508
17509         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17510                 goto nla_put_failure;
17511
17512         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17513             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17514                 goto nla_put_failure;
17515
17516         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17517             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17518                 goto nla_put_failure;
17519
17520         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17521             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17522                 goto nla_put_failure;
17523
17524         genlmsg_end(msg, hdr);
17525
17526         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17527                                 NL80211_MCGRP_MLME, gfp);
17528
17529         return;
17530
17531 nla_put_failure:
17532         nlmsg_free(msg);
17533 }
17534 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17535
17536 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17537                            u64 cookie, bool acked, s32 ack_signal,
17538                            bool is_valid_ack_signal, gfp_t gfp)
17539 {
17540         struct wireless_dev *wdev = dev->ieee80211_ptr;
17541         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17542         struct sk_buff *msg;
17543         void *hdr;
17544
17545         trace_cfg80211_probe_status(dev, addr, cookie, acked);
17546
17547         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17548
17549         if (!msg)
17550                 return;
17551
17552         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17553         if (!hdr) {
17554                 nlmsg_free(msg);
17555                 return;
17556         }
17557
17558         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17559             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17560             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17561             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17562                               NL80211_ATTR_PAD) ||
17563             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17564             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17565                                                 ack_signal)))
17566                 goto nla_put_failure;
17567
17568         genlmsg_end(msg, hdr);
17569
17570         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17571                                 NL80211_MCGRP_MLME, gfp);
17572         return;
17573
17574  nla_put_failure:
17575         nlmsg_free(msg);
17576 }
17577 EXPORT_SYMBOL(cfg80211_probe_status);
17578
17579 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17580                                      size_t len, int freq, int sig_dbm)
17581 {
17582         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17583         struct sk_buff *msg;
17584         void *hdr;
17585         struct cfg80211_beacon_registration *reg;
17586
17587         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17588
17589         spin_lock_bh(&rdev->beacon_registrations_lock);
17590         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17591                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17592                 if (!msg) {
17593                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17594                         return;
17595                 }
17596
17597                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17598                 if (!hdr)
17599                         goto nla_put_failure;
17600
17601                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17602                     (freq &&
17603                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17604                                   KHZ_TO_MHZ(freq)) ||
17605                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17606                                   freq % 1000))) ||
17607                     (sig_dbm &&
17608                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17609                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17610                         goto nla_put_failure;
17611
17612                 genlmsg_end(msg, hdr);
17613
17614                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17615         }
17616         spin_unlock_bh(&rdev->beacon_registrations_lock);
17617         return;
17618
17619  nla_put_failure:
17620         spin_unlock_bh(&rdev->beacon_registrations_lock);
17621         nlmsg_free(msg);
17622 }
17623 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17624
17625 #ifdef CONFIG_PM
17626 static int cfg80211_net_detect_results(struct sk_buff *msg,
17627                                        struct cfg80211_wowlan_wakeup *wakeup)
17628 {
17629         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17630         struct nlattr *nl_results, *nl_match, *nl_freqs;
17631         int i, j;
17632
17633         nl_results = nla_nest_start_noflag(msg,
17634                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17635         if (!nl_results)
17636                 return -EMSGSIZE;
17637
17638         for (i = 0; i < nd->n_matches; i++) {
17639                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17640
17641                 nl_match = nla_nest_start_noflag(msg, i);
17642                 if (!nl_match)
17643                         break;
17644
17645                 /* The SSID attribute is optional in nl80211, but for
17646                  * simplicity reasons it's always present in the
17647                  * cfg80211 structure.  If a driver can't pass the
17648                  * SSID, that needs to be changed.  A zero length SSID
17649                  * is still a valid SSID (wildcard), so it cannot be
17650                  * used for this purpose.
17651                  */
17652                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17653                             match->ssid.ssid)) {
17654                         nla_nest_cancel(msg, nl_match);
17655                         goto out;
17656                 }
17657
17658                 if (match->n_channels) {
17659                         nl_freqs = nla_nest_start_noflag(msg,
17660                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17661                         if (!nl_freqs) {
17662                                 nla_nest_cancel(msg, nl_match);
17663                                 goto out;
17664                         }
17665
17666                         for (j = 0; j < match->n_channels; j++) {
17667                                 if (nla_put_u32(msg, j, match->channels[j])) {
17668                                         nla_nest_cancel(msg, nl_freqs);
17669                                         nla_nest_cancel(msg, nl_match);
17670                                         goto out;
17671                                 }
17672                         }
17673
17674                         nla_nest_end(msg, nl_freqs);
17675                 }
17676
17677                 nla_nest_end(msg, nl_match);
17678         }
17679
17680 out:
17681         nla_nest_end(msg, nl_results);
17682         return 0;
17683 }
17684
17685 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17686                                    struct cfg80211_wowlan_wakeup *wakeup,
17687                                    gfp_t gfp)
17688 {
17689         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17690         struct sk_buff *msg;
17691         void *hdr;
17692         int size = 200;
17693
17694         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17695
17696         if (wakeup)
17697                 size += wakeup->packet_present_len;
17698
17699         msg = nlmsg_new(size, gfp);
17700         if (!msg)
17701                 return;
17702
17703         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17704         if (!hdr)
17705                 goto free_msg;
17706
17707         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17708             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17709                               NL80211_ATTR_PAD))
17710                 goto free_msg;
17711
17712         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17713                                         wdev->netdev->ifindex))
17714                 goto free_msg;
17715
17716         if (wakeup) {
17717                 struct nlattr *reasons;
17718
17719                 reasons = nla_nest_start_noflag(msg,
17720                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17721                 if (!reasons)
17722                         goto free_msg;
17723
17724                 if (wakeup->disconnect &&
17725                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17726                         goto free_msg;
17727                 if (wakeup->magic_pkt &&
17728                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17729                         goto free_msg;
17730                 if (wakeup->gtk_rekey_failure &&
17731                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17732                         goto free_msg;
17733                 if (wakeup->eap_identity_req &&
17734                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17735                         goto free_msg;
17736                 if (wakeup->four_way_handshake &&
17737                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17738                         goto free_msg;
17739                 if (wakeup->rfkill_release &&
17740                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17741                         goto free_msg;
17742
17743                 if (wakeup->pattern_idx >= 0 &&
17744                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17745                                 wakeup->pattern_idx))
17746                         goto free_msg;
17747
17748                 if (wakeup->tcp_match &&
17749                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17750                         goto free_msg;
17751
17752                 if (wakeup->tcp_connlost &&
17753                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17754                         goto free_msg;
17755
17756                 if (wakeup->tcp_nomoretokens &&
17757                     nla_put_flag(msg,
17758                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17759                         goto free_msg;
17760
17761                 if (wakeup->packet) {
17762                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17763                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17764
17765                         if (!wakeup->packet_80211) {
17766                                 pkt_attr =
17767                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17768                                 len_attr =
17769                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17770                         }
17771
17772                         if (wakeup->packet_len &&
17773                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17774                                 goto free_msg;
17775
17776                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17777                                     wakeup->packet))
17778                                 goto free_msg;
17779                 }
17780
17781                 if (wakeup->net_detect &&
17782                     cfg80211_net_detect_results(msg, wakeup))
17783                                 goto free_msg;
17784
17785                 nla_nest_end(msg, reasons);
17786         }
17787
17788         genlmsg_end(msg, hdr);
17789
17790         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17791                                 NL80211_MCGRP_MLME, gfp);
17792         return;
17793
17794  free_msg:
17795         nlmsg_free(msg);
17796 }
17797 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17798 #endif
17799
17800 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17801                                 enum nl80211_tdls_operation oper,
17802                                 u16 reason_code, gfp_t gfp)
17803 {
17804         struct wireless_dev *wdev = dev->ieee80211_ptr;
17805         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17806         struct sk_buff *msg;
17807         void *hdr;
17808
17809         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17810                                          reason_code);
17811
17812         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17813         if (!msg)
17814                 return;
17815
17816         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17817         if (!hdr) {
17818                 nlmsg_free(msg);
17819                 return;
17820         }
17821
17822         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17823             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17824             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17825             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17826             (reason_code > 0 &&
17827              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17828                 goto nla_put_failure;
17829
17830         genlmsg_end(msg, hdr);
17831
17832         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17833                                 NL80211_MCGRP_MLME, gfp);
17834         return;
17835
17836  nla_put_failure:
17837         nlmsg_free(msg);
17838 }
17839 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17840
17841 static int nl80211_netlink_notify(struct notifier_block * nb,
17842                                   unsigned long state,
17843                                   void *_notify)
17844 {
17845         struct netlink_notify *notify = _notify;
17846         struct cfg80211_registered_device *rdev;
17847         struct wireless_dev *wdev;
17848         struct cfg80211_beacon_registration *reg, *tmp;
17849
17850         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17851                 return NOTIFY_DONE;
17852
17853         rcu_read_lock();
17854
17855         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17856                 struct cfg80211_sched_scan_request *sched_scan_req;
17857
17858                 list_for_each_entry_rcu(sched_scan_req,
17859                                         &rdev->sched_scan_req_list,
17860                                         list) {
17861                         if (sched_scan_req->owner_nlportid == notify->portid) {
17862                                 sched_scan_req->nl_owner_dead = true;
17863                                 schedule_work(&rdev->sched_scan_stop_wk);
17864                         }
17865                 }
17866
17867                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17868                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17869
17870                         if (wdev->owner_nlportid == notify->portid) {
17871                                 wdev->nl_owner_dead = true;
17872                                 schedule_work(&rdev->destroy_work);
17873                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17874                                 schedule_work(&wdev->disconnect_wk);
17875                         }
17876
17877                         cfg80211_release_pmsr(wdev, notify->portid);
17878                 }
17879
17880                 spin_lock_bh(&rdev->beacon_registrations_lock);
17881                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17882                                          list) {
17883                         if (reg->nlportid == notify->portid) {
17884                                 list_del(&reg->list);
17885                                 kfree(reg);
17886                                 break;
17887                         }
17888                 }
17889                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17890         }
17891
17892         rcu_read_unlock();
17893
17894         /*
17895          * It is possible that the user space process that is controlling the
17896          * indoor setting disappeared, so notify the regulatory core.
17897          */
17898         regulatory_netlink_notify(notify->portid);
17899         return NOTIFY_OK;
17900 }
17901
17902 static struct notifier_block nl80211_netlink_notifier = {
17903         .notifier_call = nl80211_netlink_notify,
17904 };
17905
17906 void cfg80211_ft_event(struct net_device *netdev,
17907                        struct cfg80211_ft_event_params *ft_event)
17908 {
17909         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17910         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17911         struct sk_buff *msg;
17912         void *hdr;
17913
17914         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17915
17916         if (!ft_event->target_ap)
17917                 return;
17918
17919         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17920                         GFP_KERNEL);
17921         if (!msg)
17922                 return;
17923
17924         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17925         if (!hdr)
17926                 goto out;
17927
17928         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17929             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17930             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17931                 goto out;
17932
17933         if (ft_event->ies &&
17934             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17935                 goto out;
17936         if (ft_event->ric_ies &&
17937             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17938                     ft_event->ric_ies))
17939                 goto out;
17940
17941         genlmsg_end(msg, hdr);
17942
17943         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17944                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17945         return;
17946  out:
17947         nlmsg_free(msg);
17948 }
17949 EXPORT_SYMBOL(cfg80211_ft_event);
17950
17951 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17952 {
17953         struct cfg80211_registered_device *rdev;
17954         struct sk_buff *msg;
17955         void *hdr;
17956         u32 nlportid;
17957
17958         rdev = wiphy_to_rdev(wdev->wiphy);
17959         if (!rdev->crit_proto_nlportid)
17960                 return;
17961
17962         nlportid = rdev->crit_proto_nlportid;
17963         rdev->crit_proto_nlportid = 0;
17964
17965         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17966         if (!msg)
17967                 return;
17968
17969         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17970         if (!hdr)
17971                 goto nla_put_failure;
17972
17973         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17974             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17975                               NL80211_ATTR_PAD))
17976                 goto nla_put_failure;
17977
17978         genlmsg_end(msg, hdr);
17979
17980         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17981         return;
17982
17983  nla_put_failure:
17984         nlmsg_free(msg);
17985 }
17986 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17987
17988 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17989 {
17990         struct wiphy *wiphy = wdev->wiphy;
17991         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17992         struct sk_buff *msg;
17993         void *hdr;
17994
17995         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17996         if (!msg)
17997                 return;
17998
17999         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
18000         if (!hdr)
18001                 goto out;
18002
18003         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18004             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
18005             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18006                               NL80211_ATTR_PAD))
18007                 goto out;
18008
18009         genlmsg_end(msg, hdr);
18010
18011         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
18012                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18013         return;
18014  out:
18015         nlmsg_free(msg);
18016 }
18017
18018 int cfg80211_external_auth_request(struct net_device *dev,
18019                                    struct cfg80211_external_auth_params *params,
18020                                    gfp_t gfp)
18021 {
18022         struct wireless_dev *wdev = dev->ieee80211_ptr;
18023         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18024         struct sk_buff *msg;
18025         void *hdr;
18026
18027         if (!wdev->conn_owner_nlportid)
18028                 return -EINVAL;
18029
18030         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18031         if (!msg)
18032                 return -ENOMEM;
18033
18034         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
18035         if (!hdr)
18036                 goto nla_put_failure;
18037
18038         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18039             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18040             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
18041             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
18042                         params->action) ||
18043             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
18044             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
18045                     params->ssid.ssid))
18046                 goto nla_put_failure;
18047
18048         genlmsg_end(msg, hdr);
18049         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
18050                         wdev->conn_owner_nlportid);
18051         return 0;
18052
18053  nla_put_failure:
18054         nlmsg_free(msg);
18055         return -ENOBUFS;
18056 }
18057 EXPORT_SYMBOL(cfg80211_external_auth_request);
18058
18059 void cfg80211_update_owe_info_event(struct net_device *netdev,
18060                                     struct cfg80211_update_owe_info *owe_info,
18061                                     gfp_t gfp)
18062 {
18063         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
18064         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18065         struct sk_buff *msg;
18066         void *hdr;
18067
18068         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
18069
18070         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18071         if (!msg)
18072                 return;
18073
18074         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
18075         if (!hdr)
18076                 goto nla_put_failure;
18077
18078         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18079             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18080             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
18081                 goto nla_put_failure;
18082
18083         if (!owe_info->ie_len ||
18084             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
18085                 goto nla_put_failure;
18086
18087         genlmsg_end(msg, hdr);
18088
18089         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18090                                 NL80211_MCGRP_MLME, gfp);
18091         return;
18092
18093 nla_put_failure:
18094         genlmsg_cancel(msg, hdr);
18095         nlmsg_free(msg);
18096 }
18097 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
18098
18099 /* initialisation/exit functions */
18100
18101 int __init nl80211_init(void)
18102 {
18103         int err;
18104
18105         err = genl_register_family(&nl80211_fam);
18106         if (err)
18107                 return err;
18108
18109         err = netlink_register_notifier(&nl80211_netlink_notifier);
18110         if (err)
18111                 goto err_out;
18112
18113         return 0;
18114  err_out:
18115         genl_unregister_family(&nl80211_fam);
18116         return err;
18117 }
18118
18119 void nl80211_exit(void)
18120 {
18121         netlink_unregister_notifier(&nl80211_netlink_notifier);
18122         genl_unregister_family(&nl80211_fam);
18123 }