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 < NUM_NL80211_BANDS; band++) {
2355                         struct ieee80211_supported_band *sband;
2356
2357                         /* omit higher bands for ancient software */
2358                         if (band > NL80211_BAND_5GHZ && !state->split)
2359                                 break;
2360
2361                         sband = rdev->wiphy.bands[band];
2362
2363                         if (!sband)
2364                                 continue;
2365
2366                         nl_band = nla_nest_start_noflag(msg, band);
2367                         if (!nl_band)
2368                                 goto nla_put_failure;
2369
2370                         switch (state->chan_start) {
2371                         case 0:
2372                                 if (nl80211_send_band_rateinfo(msg, sband,
2373                                                                state->split))
2374                                         goto nla_put_failure;
2375                                 state->chan_start++;
2376                                 if (state->split)
2377                                         break;
2378                                 fallthrough;
2379                         default:
2380                                 /* add frequencies */
2381                                 nl_freqs = nla_nest_start_noflag(msg,
2382                                                                  NL80211_BAND_ATTR_FREQS);
2383                                 if (!nl_freqs)
2384                                         goto nla_put_failure;
2385
2386                                 for (i = state->chan_start - 1;
2387                                      i < sband->n_channels;
2388                                      i++) {
2389                                         nl_freq = nla_nest_start_noflag(msg,
2390                                                                         i);
2391                                         if (!nl_freq)
2392                                                 goto nla_put_failure;
2393
2394                                         chan = &sband->channels[i];
2395
2396                                         if (nl80211_msg_put_channel(
2397                                                         msg, &rdev->wiphy, chan,
2398                                                         state->split))
2399                                                 goto nla_put_failure;
2400
2401                                         nla_nest_end(msg, nl_freq);
2402                                         if (state->split)
2403                                                 break;
2404                                 }
2405                                 if (i < sband->n_channels)
2406                                         state->chan_start = i + 2;
2407                                 else
2408                                         state->chan_start = 0;
2409                                 nla_nest_end(msg, nl_freqs);
2410                         }
2411
2412                         nla_nest_end(msg, nl_band);
2413
2414                         if (state->split) {
2415                                 /* start again here */
2416                                 if (state->chan_start)
2417                                         band--;
2418                                 break;
2419                         }
2420                 }
2421                 nla_nest_end(msg, nl_bands);
2422
2423                 if (band < NUM_NL80211_BANDS)
2424                         state->band_start = band + 1;
2425                 else
2426                         state->band_start = 0;
2427
2428                 /* if bands & channels are done, continue outside */
2429                 if (state->band_start == 0 && state->chan_start == 0)
2430                         state->split_start++;
2431                 if (state->split)
2432                         break;
2433                 fallthrough;
2434         case 4:
2435                 nl_cmds = nla_nest_start_noflag(msg,
2436                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2437                 if (!nl_cmds)
2438                         goto nla_put_failure;
2439
2440                 i = nl80211_add_commands_unsplit(rdev, msg);
2441                 if (i < 0)
2442                         goto nla_put_failure;
2443                 if (state->split) {
2444                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2445                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2446                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2447                                 CMD(channel_switch, CHANNEL_SWITCH);
2448                         CMD(set_qos_map, SET_QOS_MAP);
2449                         if (rdev->wiphy.features &
2450                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2451                                 CMD(add_tx_ts, ADD_TX_TS);
2452                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2453                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2454                         CMD(update_ft_ies, UPDATE_FT_IES);
2455                         if (rdev->wiphy.sar_capa)
2456                                 CMD(set_sar_specs, SET_SAR_SPECS);
2457                 }
2458 #undef CMD
2459
2460                 nla_nest_end(msg, nl_cmds);
2461                 state->split_start++;
2462                 if (state->split)
2463                         break;
2464                 fallthrough;
2465         case 5:
2466                 if (rdev->ops->remain_on_channel &&
2467                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2468                     nla_put_u32(msg,
2469                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2470                                 rdev->wiphy.max_remain_on_channel_duration))
2471                         goto nla_put_failure;
2472
2473                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2474                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2475                         goto nla_put_failure;
2476
2477                 state->split_start++;
2478                 if (state->split)
2479                         break;
2480                 fallthrough;
2481         case 6:
2482 #ifdef CONFIG_PM
2483                 if (nl80211_send_wowlan(msg, rdev, state->split))
2484                         goto nla_put_failure;
2485                 state->split_start++;
2486                 if (state->split)
2487                         break;
2488 #else
2489                 state->split_start++;
2490 #endif
2491                 fallthrough;
2492         case 7:
2493                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2494                                         rdev->wiphy.software_iftypes))
2495                         goto nla_put_failure;
2496
2497                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2498                                                    state->split))
2499                         goto nla_put_failure;
2500
2501                 state->split_start++;
2502                 if (state->split)
2503                         break;
2504                 fallthrough;
2505         case 8:
2506                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2507                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2508                                 rdev->wiphy.ap_sme_capa))
2509                         goto nla_put_failure;
2510
2511                 features = rdev->wiphy.features;
2512                 /*
2513                  * We can only add the per-channel limit information if the
2514                  * dump is split, otherwise it makes it too big. Therefore
2515                  * only advertise it in that case.
2516                  */
2517                 if (state->split)
2518                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2519                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2520                         goto nla_put_failure;
2521
2522                 if (rdev->wiphy.ht_capa_mod_mask &&
2523                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2524                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2525                             rdev->wiphy.ht_capa_mod_mask))
2526                         goto nla_put_failure;
2527
2528                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2529                     rdev->wiphy.max_acl_mac_addrs &&
2530                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2531                                 rdev->wiphy.max_acl_mac_addrs))
2532                         goto nla_put_failure;
2533
2534                 /*
2535                  * Any information below this point is only available to
2536                  * applications that can deal with it being split. This
2537                  * helps ensure that newly added capabilities don't break
2538                  * older tools by overrunning their buffers.
2539                  *
2540                  * We still increment split_start so that in the split
2541                  * case we'll continue with more data in the next round,
2542                  * but break unconditionally so unsplit data stops here.
2543                  */
2544                 if (state->split)
2545                         state->split_start++;
2546                 else
2547                         state->split_start = 0;
2548                 break;
2549         case 9:
2550                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2551                         goto nla_put_failure;
2552
2553                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2554                                 rdev->wiphy.max_sched_scan_plans) ||
2555                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2556                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2557                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2558                                 rdev->wiphy.max_sched_scan_plan_iterations))
2559                         goto nla_put_failure;
2560
2561                 if (rdev->wiphy.extended_capabilities &&
2562                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2563                              rdev->wiphy.extended_capabilities_len,
2564                              rdev->wiphy.extended_capabilities) ||
2565                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2566                              rdev->wiphy.extended_capabilities_len,
2567                              rdev->wiphy.extended_capabilities_mask)))
2568                         goto nla_put_failure;
2569
2570                 if (rdev->wiphy.vht_capa_mod_mask &&
2571                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2572                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2573                             rdev->wiphy.vht_capa_mod_mask))
2574                         goto nla_put_failure;
2575
2576                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2577                             rdev->wiphy.perm_addr))
2578                         goto nla_put_failure;
2579
2580                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2581                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2582                             rdev->wiphy.addr_mask))
2583                         goto nla_put_failure;
2584
2585                 if (rdev->wiphy.n_addresses > 1) {
2586                         void *attr;
2587
2588                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2589                         if (!attr)
2590                                 goto nla_put_failure;
2591
2592                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2593                                 if (nla_put(msg, i + 1, ETH_ALEN,
2594                                             rdev->wiphy.addresses[i].addr))
2595                                         goto nla_put_failure;
2596
2597                         nla_nest_end(msg, attr);
2598                 }
2599
2600                 state->split_start++;
2601                 break;
2602         case 10:
2603                 if (nl80211_send_coalesce(msg, rdev))
2604                         goto nla_put_failure;
2605
2606                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2607                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2608                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2609                         goto nla_put_failure;
2610
2611                 if (rdev->wiphy.max_ap_assoc_sta &&
2612                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2613                                 rdev->wiphy.max_ap_assoc_sta))
2614                         goto nla_put_failure;
2615
2616                 state->split_start++;
2617                 break;
2618         case 11:
2619                 if (rdev->wiphy.n_vendor_commands) {
2620                         const struct nl80211_vendor_cmd_info *info;
2621                         struct nlattr *nested;
2622
2623                         nested = nla_nest_start_noflag(msg,
2624                                                        NL80211_ATTR_VENDOR_DATA);
2625                         if (!nested)
2626                                 goto nla_put_failure;
2627
2628                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2629                                 info = &rdev->wiphy.vendor_commands[i].info;
2630                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2631                                         goto nla_put_failure;
2632                         }
2633                         nla_nest_end(msg, nested);
2634                 }
2635
2636                 if (rdev->wiphy.n_vendor_events) {
2637                         const struct nl80211_vendor_cmd_info *info;
2638                         struct nlattr *nested;
2639
2640                         nested = nla_nest_start_noflag(msg,
2641                                                        NL80211_ATTR_VENDOR_EVENTS);
2642                         if (!nested)
2643                                 goto nla_put_failure;
2644
2645                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2646                                 info = &rdev->wiphy.vendor_events[i];
2647                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2648                                         goto nla_put_failure;
2649                         }
2650                         nla_nest_end(msg, nested);
2651                 }
2652                 state->split_start++;
2653                 break;
2654         case 12:
2655                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2656                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2657                                rdev->wiphy.max_num_csa_counters))
2658                         goto nla_put_failure;
2659
2660                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2661                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2662                         goto nla_put_failure;
2663
2664                 if (rdev->wiphy.max_sched_scan_reqs &&
2665                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2666                                 rdev->wiphy.max_sched_scan_reqs))
2667                         goto nla_put_failure;
2668
2669                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2670                             sizeof(rdev->wiphy.ext_features),
2671                             rdev->wiphy.ext_features))
2672                         goto nla_put_failure;
2673
2674                 if (rdev->wiphy.bss_select_support) {
2675                         struct nlattr *nested;
2676                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2677
2678                         nested = nla_nest_start_noflag(msg,
2679                                                        NL80211_ATTR_BSS_SELECT);
2680                         if (!nested)
2681                                 goto nla_put_failure;
2682
2683                         i = 0;
2684                         while (bss_select_support) {
2685                                 if ((bss_select_support & 1) &&
2686                                     nla_put_flag(msg, i))
2687                                         goto nla_put_failure;
2688                                 i++;
2689                                 bss_select_support >>= 1;
2690                         }
2691                         nla_nest_end(msg, nested);
2692                 }
2693
2694                 state->split_start++;
2695                 break;
2696         case 13:
2697                 if (rdev->wiphy.num_iftype_ext_capab &&
2698                     rdev->wiphy.iftype_ext_capab) {
2699                         struct nlattr *nested_ext_capab, *nested;
2700
2701                         nested = nla_nest_start_noflag(msg,
2702                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2703                         if (!nested)
2704                                 goto nla_put_failure;
2705
2706                         for (i = state->capa_start;
2707                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2708                                 const struct wiphy_iftype_ext_capab *capab;
2709
2710                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2711
2712                                 nested_ext_capab = nla_nest_start_noflag(msg,
2713                                                                          i);
2714                                 if (!nested_ext_capab ||
2715                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2716                                                 capab->iftype) ||
2717                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2718                                             capab->extended_capabilities_len,
2719                                             capab->extended_capabilities) ||
2720                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2721                                             capab->extended_capabilities_len,
2722                                             capab->extended_capabilities_mask))
2723                                         goto nla_put_failure;
2724
2725                                 nla_nest_end(msg, nested_ext_capab);
2726                                 if (state->split)
2727                                         break;
2728                         }
2729                         nla_nest_end(msg, nested);
2730                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2731                                 state->capa_start = i + 1;
2732                                 break;
2733                         }
2734                 }
2735
2736                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2737                                 rdev->wiphy.nan_supported_bands))
2738                         goto nla_put_failure;
2739
2740                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2741                                             NL80211_EXT_FEATURE_TXQS)) {
2742                         struct cfg80211_txq_stats txqstats = {};
2743                         int res;
2744
2745                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2746                         if (!res &&
2747                             !nl80211_put_txq_stats(msg, &txqstats,
2748                                                    NL80211_ATTR_TXQ_STATS))
2749                                 goto nla_put_failure;
2750
2751                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2752                                         rdev->wiphy.txq_limit))
2753                                 goto nla_put_failure;
2754                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2755                                         rdev->wiphy.txq_memory_limit))
2756                                 goto nla_put_failure;
2757                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2758                                         rdev->wiphy.txq_quantum))
2759                                 goto nla_put_failure;
2760                 }
2761
2762                 state->split_start++;
2763                 break;
2764         case 14:
2765                 if (nl80211_send_pmsr_capa(rdev, msg))
2766                         goto nla_put_failure;
2767
2768                 state->split_start++;
2769                 break;
2770         case 15:
2771                 if (rdev->wiphy.akm_suites &&
2772                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2773                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2774                             rdev->wiphy.akm_suites))
2775                         goto nla_put_failure;
2776
2777                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2778                         goto nla_put_failure;
2779
2780                 if (nl80211_put_tid_config_support(rdev, msg))
2781                         goto nla_put_failure;
2782                 state->split_start++;
2783                 break;
2784         case 16:
2785                 if (nl80211_put_sar_specs(rdev, msg))
2786                         goto nla_put_failure;
2787
2788                 /* done */
2789                 state->split_start = 0;
2790                 break;
2791         }
2792  finish:
2793         genlmsg_end(msg, hdr);
2794         return 0;
2795
2796  nla_put_failure:
2797         genlmsg_cancel(msg, hdr);
2798         return -EMSGSIZE;
2799 }
2800
2801 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2802                                     struct netlink_callback *cb,
2803                                     struct nl80211_dump_wiphy_state *state)
2804 {
2805         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2806         int ret;
2807
2808         if (!tb)
2809                 return -ENOMEM;
2810
2811         ret = nlmsg_parse_deprecated(cb->nlh,
2812                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2813                                      tb, nl80211_fam.maxattr,
2814                                      nl80211_policy, NULL);
2815         /* ignore parse errors for backward compatibility */
2816         if (ret) {
2817                 ret = 0;
2818                 goto out;
2819         }
2820
2821         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2822         if (tb[NL80211_ATTR_WIPHY])
2823                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2824         if (tb[NL80211_ATTR_WDEV])
2825                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2826         if (tb[NL80211_ATTR_IFINDEX]) {
2827                 struct net_device *netdev;
2828                 struct cfg80211_registered_device *rdev;
2829                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2830
2831                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2832                 if (!netdev) {
2833                         ret = -ENODEV;
2834                         goto out;
2835                 }
2836                 if (netdev->ieee80211_ptr) {
2837                         rdev = wiphy_to_rdev(
2838                                 netdev->ieee80211_ptr->wiphy);
2839                         state->filter_wiphy = rdev->wiphy_idx;
2840                 }
2841         }
2842
2843         ret = 0;
2844 out:
2845         kfree(tb);
2846         return ret;
2847 }
2848
2849 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2850 {
2851         int idx = 0, ret;
2852         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2853         struct cfg80211_registered_device *rdev;
2854
2855         rtnl_lock();
2856         if (!state) {
2857                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2858                 if (!state) {
2859                         rtnl_unlock();
2860                         return -ENOMEM;
2861                 }
2862                 state->filter_wiphy = -1;
2863                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2864                 if (ret) {
2865                         kfree(state);
2866                         rtnl_unlock();
2867                         return ret;
2868                 }
2869                 cb->args[0] = (long)state;
2870         }
2871
2872         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2873                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2874                         continue;
2875                 if (++idx <= state->start)
2876                         continue;
2877                 if (state->filter_wiphy != -1 &&
2878                     state->filter_wiphy != rdev->wiphy_idx)
2879                         continue;
2880                 /* attempt to fit multiple wiphy data chunks into the skb */
2881                 do {
2882                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2883                                                  skb,
2884                                                  NETLINK_CB(cb->skb).portid,
2885                                                  cb->nlh->nlmsg_seq,
2886                                                  NLM_F_MULTI, state);
2887                         if (ret < 0) {
2888                                 /*
2889                                  * If sending the wiphy data didn't fit (ENOBUFS
2890                                  * or EMSGSIZE returned), this SKB is still
2891                                  * empty (so it's not too big because another
2892                                  * wiphy dataset is already in the skb) and
2893                                  * we've not tried to adjust the dump allocation
2894                                  * yet ... then adjust the alloc size to be
2895                                  * bigger, and return 1 but with the empty skb.
2896                                  * This results in an empty message being RX'ed
2897                                  * in userspace, but that is ignored.
2898                                  *
2899                                  * We can then retry with the larger buffer.
2900                                  */
2901                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2902                                     !skb->len && !state->split &&
2903                                     cb->min_dump_alloc < 4096) {
2904                                         cb->min_dump_alloc = 4096;
2905                                         state->split_start = 0;
2906                                         rtnl_unlock();
2907                                         return 1;
2908                                 }
2909                                 idx--;
2910                                 break;
2911                         }
2912                 } while (state->split_start > 0);
2913                 break;
2914         }
2915         rtnl_unlock();
2916
2917         state->start = idx;
2918
2919         return skb->len;
2920 }
2921
2922 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2923 {
2924         kfree((void *)cb->args[0]);
2925         return 0;
2926 }
2927
2928 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2929 {
2930         struct sk_buff *msg;
2931         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2932         struct nl80211_dump_wiphy_state state = {};
2933
2934         msg = nlmsg_new(4096, GFP_KERNEL);
2935         if (!msg)
2936                 return -ENOMEM;
2937
2938         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2939                                info->snd_portid, info->snd_seq, 0,
2940                                &state) < 0) {
2941                 nlmsg_free(msg);
2942                 return -ENOBUFS;
2943         }
2944
2945         return genlmsg_reply(msg, info);
2946 }
2947
2948 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2949         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2950         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2951         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2952         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2953         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2954 };
2955
2956 static int parse_txq_params(struct nlattr *tb[],
2957                             struct ieee80211_txq_params *txq_params)
2958 {
2959         u8 ac;
2960
2961         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2962             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2963             !tb[NL80211_TXQ_ATTR_AIFS])
2964                 return -EINVAL;
2965
2966         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2967         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2968         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2969         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2970         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2971
2972         if (ac >= NL80211_NUM_ACS)
2973                 return -EINVAL;
2974         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2975         return 0;
2976 }
2977
2978 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2979 {
2980         /*
2981          * You can only set the channel explicitly for some interfaces,
2982          * most have their channel managed via their respective
2983          * "establish a connection" command (connect, join, ...)
2984          *
2985          * For AP/GO and mesh mode, the channel can be set with the
2986          * channel userspace API, but is only stored and passed to the
2987          * low-level driver when the AP starts or the mesh is joined.
2988          * This is for backward compatibility, userspace can also give
2989          * the channel in the start-ap or join-mesh commands instead.
2990          *
2991          * Monitors are special as they are normally slaved to
2992          * whatever else is going on, so they have their own special
2993          * operation to set the monitor channel if possible.
2994          */
2995         return !wdev ||
2996                 wdev->iftype == NL80211_IFTYPE_AP ||
2997                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2998                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2999                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
3000 }
3001
3002 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
3003                           struct genl_info *info,
3004                           struct cfg80211_chan_def *chandef)
3005 {
3006         struct netlink_ext_ack *extack = info->extack;
3007         struct nlattr **attrs = info->attrs;
3008         u32 control_freq;
3009
3010         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3011                 return -EINVAL;
3012
3013         control_freq = MHZ_TO_KHZ(
3014                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3015         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3016                 control_freq +=
3017                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3018
3019         memset(chandef, 0, sizeof(*chandef));
3020         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3021         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3022         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3023         chandef->freq1_offset = control_freq % 1000;
3024         chandef->center_freq2 = 0;
3025
3026         /* Primary channel not allowed */
3027         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3028                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3029                                     "Channel is disabled");
3030                 return -EINVAL;
3031         }
3032
3033         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3034                 enum nl80211_channel_type chantype;
3035
3036                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3037
3038                 switch (chantype) {
3039                 case NL80211_CHAN_NO_HT:
3040                 case NL80211_CHAN_HT20:
3041                 case NL80211_CHAN_HT40PLUS:
3042                 case NL80211_CHAN_HT40MINUS:
3043                         cfg80211_chandef_create(chandef, chandef->chan,
3044                                                 chantype);
3045                         /* user input for center_freq is incorrect */
3046                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3047                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3048                                 NL_SET_ERR_MSG_ATTR(extack,
3049                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3050                                                     "bad center frequency 1");
3051                                 return -EINVAL;
3052                         }
3053                         /* center_freq2 must be zero */
3054                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3055                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3056                                 NL_SET_ERR_MSG_ATTR(extack,
3057                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3058                                                     "center frequency 2 can't be used");
3059                                 return -EINVAL;
3060                         }
3061                         break;
3062                 default:
3063                         NL_SET_ERR_MSG_ATTR(extack,
3064                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3065                                             "invalid channel type");
3066                         return -EINVAL;
3067                 }
3068         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3069                 chandef->width =
3070                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3071                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3072                         chandef->center_freq1 =
3073                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3074                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3075                                 chandef->freq1_offset = nla_get_u32(
3076                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3077                         else
3078                                 chandef->freq1_offset = 0;
3079                 }
3080                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3081                         chandef->center_freq2 =
3082                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3083         }
3084
3085         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3086                 chandef->edmg.channels =
3087                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3088
3089                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3090                         chandef->edmg.bw_config =
3091                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3092         } else {
3093                 chandef->edmg.bw_config = 0;
3094                 chandef->edmg.channels = 0;
3095         }
3096
3097         if (!cfg80211_chandef_valid(chandef)) {
3098                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3099                 return -EINVAL;
3100         }
3101
3102         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3103                                      IEEE80211_CHAN_DISABLED)) {
3104                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3105                 return -EINVAL;
3106         }
3107
3108         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3109              chandef->width == NL80211_CHAN_WIDTH_10) &&
3110             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3111                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3112                 return -EINVAL;
3113         }
3114
3115         return 0;
3116 }
3117
3118 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3119                                  struct net_device *dev,
3120                                  struct genl_info *info)
3121 {
3122         struct cfg80211_chan_def chandef;
3123         int result;
3124         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3125         struct wireless_dev *wdev = NULL;
3126
3127         if (dev)
3128                 wdev = dev->ieee80211_ptr;
3129         if (!nl80211_can_set_dev_channel(wdev))
3130                 return -EOPNOTSUPP;
3131         if (wdev)
3132                 iftype = wdev->iftype;
3133
3134         result = nl80211_parse_chandef(rdev, info, &chandef);
3135         if (result)
3136                 return result;
3137
3138         switch (iftype) {
3139         case NL80211_IFTYPE_AP:
3140         case NL80211_IFTYPE_P2P_GO:
3141                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3142                                                    iftype)) {
3143                         result = -EINVAL;
3144                         break;
3145                 }
3146                 if (wdev->beacon_interval) {
3147                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3148                             !(rdev->wiphy.features &
3149                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3150                                 result = -EBUSY;
3151                                 break;
3152                         }
3153
3154                         /* Only allow dynamic channel width changes */
3155                         if (chandef.chan != wdev->preset_chandef.chan) {
3156                                 result = -EBUSY;
3157                                 break;
3158                         }
3159                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3160                         if (result)
3161                                 break;
3162                 }
3163                 wdev->preset_chandef = chandef;
3164                 result = 0;
3165                 break;
3166         case NL80211_IFTYPE_MESH_POINT:
3167                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3168                 break;
3169         case NL80211_IFTYPE_MONITOR:
3170                 result = cfg80211_set_monitor_channel(rdev, &chandef);
3171                 break;
3172         default:
3173                 result = -EINVAL;
3174         }
3175
3176         return result;
3177 }
3178
3179 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3180 {
3181         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3182         struct net_device *netdev = info->user_ptr[1];
3183
3184         return __nl80211_set_channel(rdev, netdev, info);
3185 }
3186
3187 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3188 {
3189         struct cfg80211_registered_device *rdev = NULL;
3190         struct net_device *netdev = NULL;
3191         struct wireless_dev *wdev;
3192         int result = 0, rem_txq_params = 0;
3193         struct nlattr *nl_txq_params;
3194         u32 changed;
3195         u8 retry_short = 0, retry_long = 0;
3196         u32 frag_threshold = 0, rts_threshold = 0;
3197         u8 coverage_class = 0;
3198         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3199
3200         rtnl_lock();
3201         /*
3202          * Try to find the wiphy and netdev. Normally this
3203          * function shouldn't need the netdev, but this is
3204          * done for backward compatibility -- previously
3205          * setting the channel was done per wiphy, but now
3206          * it is per netdev. Previous userland like hostapd
3207          * also passed a netdev to set_wiphy, so that it is
3208          * possible to let that go to the right netdev!
3209          */
3210
3211         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3212                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3213
3214                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3215                 if (netdev && netdev->ieee80211_ptr)
3216                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3217                 else
3218                         netdev = NULL;
3219         }
3220
3221         if (!netdev) {
3222                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3223                                                   info->attrs);
3224                 if (IS_ERR(rdev)) {
3225                         rtnl_unlock();
3226                         return PTR_ERR(rdev);
3227                 }
3228                 wdev = NULL;
3229                 netdev = NULL;
3230                 result = 0;
3231         } else
3232                 wdev = netdev->ieee80211_ptr;
3233
3234         wiphy_lock(&rdev->wiphy);
3235
3236         /*
3237          * end workaround code, by now the rdev is available
3238          * and locked, and wdev may or may not be NULL.
3239          */
3240
3241         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3242                 result = cfg80211_dev_rename(
3243                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3244         rtnl_unlock();
3245
3246         if (result)
3247                 goto out;
3248
3249         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3250                 struct ieee80211_txq_params txq_params;
3251                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3252
3253                 if (!rdev->ops->set_txq_params) {
3254                         result = -EOPNOTSUPP;
3255                         goto out;
3256                 }
3257
3258                 if (!netdev) {
3259                         result = -EINVAL;
3260                         goto out;
3261                 }
3262
3263                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3264                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3265                         result = -EINVAL;
3266                         goto out;
3267                 }
3268
3269                 if (!netif_running(netdev)) {
3270                         result = -ENETDOWN;
3271                         goto out;
3272                 }
3273
3274                 nla_for_each_nested(nl_txq_params,
3275                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3276                                     rem_txq_params) {
3277                         result = nla_parse_nested_deprecated(tb,
3278                                                              NL80211_TXQ_ATTR_MAX,
3279                                                              nl_txq_params,
3280                                                              txq_params_policy,
3281                                                              info->extack);
3282                         if (result)
3283                                 goto out;
3284                         result = parse_txq_params(tb, &txq_params);
3285                         if (result)
3286                                 goto out;
3287
3288                         result = rdev_set_txq_params(rdev, netdev,
3289                                                      &txq_params);
3290                         if (result)
3291                                 goto out;
3292                 }
3293         }
3294
3295         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3296                 result = __nl80211_set_channel(
3297                         rdev,
3298                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3299                         info);
3300                 if (result)
3301                         goto out;
3302         }
3303
3304         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3305                 struct wireless_dev *txp_wdev = wdev;
3306                 enum nl80211_tx_power_setting type;
3307                 int idx, mbm = 0;
3308
3309                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3310                         txp_wdev = NULL;
3311
3312                 if (!rdev->ops->set_tx_power) {
3313                         result = -EOPNOTSUPP;
3314                         goto out;
3315                 }
3316
3317                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3318                 type = nla_get_u32(info->attrs[idx]);
3319
3320                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3321                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3322                         result = -EINVAL;
3323                         goto out;
3324                 }
3325
3326                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3327                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3328                         mbm = nla_get_u32(info->attrs[idx]);
3329                 }
3330
3331                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3332                 if (result)
3333                         goto out;
3334         }
3335
3336         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3337             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3338                 u32 tx_ant, rx_ant;
3339
3340                 if ((!rdev->wiphy.available_antennas_tx &&
3341                      !rdev->wiphy.available_antennas_rx) ||
3342                     !rdev->ops->set_antenna) {
3343                         result = -EOPNOTSUPP;
3344                         goto out;
3345                 }
3346
3347                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3348                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3349
3350                 /* reject antenna configurations which don't match the
3351                  * available antenna masks, except for the "all" mask */
3352                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3353                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3354                         result = -EINVAL;
3355                         goto out;
3356                 }
3357
3358                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3359                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3360
3361                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3362                 if (result)
3363                         goto out;
3364         }
3365
3366         changed = 0;
3367
3368         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3369                 retry_short = nla_get_u8(
3370                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3371
3372                 changed |= WIPHY_PARAM_RETRY_SHORT;
3373         }
3374
3375         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3376                 retry_long = nla_get_u8(
3377                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3378
3379                 changed |= WIPHY_PARAM_RETRY_LONG;
3380         }
3381
3382         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3383                 frag_threshold = nla_get_u32(
3384                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3385                 if (frag_threshold < 256) {
3386                         result = -EINVAL;
3387                         goto out;
3388                 }
3389
3390                 if (frag_threshold != (u32) -1) {
3391                         /*
3392                          * Fragments (apart from the last one) are required to
3393                          * have even length. Make the fragmentation code
3394                          * simpler by stripping LSB should someone try to use
3395                          * odd threshold value.
3396                          */
3397                         frag_threshold &= ~0x1;
3398                 }
3399                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3400         }
3401
3402         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3403                 rts_threshold = nla_get_u32(
3404                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3405                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3406         }
3407
3408         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3409                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3410                         result = -EINVAL;
3411                         goto out;
3412                 }
3413
3414                 coverage_class = nla_get_u8(
3415                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3416                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3417         }
3418
3419         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3420                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3421                         result = -EOPNOTSUPP;
3422                         goto out;
3423                 }
3424
3425                 changed |= WIPHY_PARAM_DYN_ACK;
3426         }
3427
3428         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3429                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3430                                              NL80211_EXT_FEATURE_TXQS)) {
3431                         result = -EOPNOTSUPP;
3432                         goto out;
3433                 }
3434                 txq_limit = nla_get_u32(
3435                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3436                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3437         }
3438
3439         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3440                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3441                                              NL80211_EXT_FEATURE_TXQS)) {
3442                         result = -EOPNOTSUPP;
3443                         goto out;
3444                 }
3445                 txq_memory_limit = nla_get_u32(
3446                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3447                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3448         }
3449
3450         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3451                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3452                                              NL80211_EXT_FEATURE_TXQS)) {
3453                         result = -EOPNOTSUPP;
3454                         goto out;
3455                 }
3456                 txq_quantum = nla_get_u32(
3457                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3458                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3459         }
3460
3461         if (changed) {
3462                 u8 old_retry_short, old_retry_long;
3463                 u32 old_frag_threshold, old_rts_threshold;
3464                 u8 old_coverage_class;
3465                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3466
3467                 if (!rdev->ops->set_wiphy_params) {
3468                         result = -EOPNOTSUPP;
3469                         goto out;
3470                 }
3471
3472                 old_retry_short = rdev->wiphy.retry_short;
3473                 old_retry_long = rdev->wiphy.retry_long;
3474                 old_frag_threshold = rdev->wiphy.frag_threshold;
3475                 old_rts_threshold = rdev->wiphy.rts_threshold;
3476                 old_coverage_class = rdev->wiphy.coverage_class;
3477                 old_txq_limit = rdev->wiphy.txq_limit;
3478                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3479                 old_txq_quantum = rdev->wiphy.txq_quantum;
3480
3481                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3482                         rdev->wiphy.retry_short = retry_short;
3483                 if (changed & WIPHY_PARAM_RETRY_LONG)
3484                         rdev->wiphy.retry_long = retry_long;
3485                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3486                         rdev->wiphy.frag_threshold = frag_threshold;
3487                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3488                         rdev->wiphy.rts_threshold = rts_threshold;
3489                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3490                         rdev->wiphy.coverage_class = coverage_class;
3491                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3492                         rdev->wiphy.txq_limit = txq_limit;
3493                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3494                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3495                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3496                         rdev->wiphy.txq_quantum = txq_quantum;
3497
3498                 result = rdev_set_wiphy_params(rdev, changed);
3499                 if (result) {
3500                         rdev->wiphy.retry_short = old_retry_short;
3501                         rdev->wiphy.retry_long = old_retry_long;
3502                         rdev->wiphy.frag_threshold = old_frag_threshold;
3503                         rdev->wiphy.rts_threshold = old_rts_threshold;
3504                         rdev->wiphy.coverage_class = old_coverage_class;
3505                         rdev->wiphy.txq_limit = old_txq_limit;
3506                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3507                         rdev->wiphy.txq_quantum = old_txq_quantum;
3508                         goto out;
3509                 }
3510         }
3511
3512         result = 0;
3513
3514 out:
3515         wiphy_unlock(&rdev->wiphy);
3516         return result;
3517 }
3518
3519 static int nl80211_send_chandef(struct sk_buff *msg,
3520                                 const struct cfg80211_chan_def *chandef)
3521 {
3522         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3523                 return -EINVAL;
3524
3525         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3526                         chandef->chan->center_freq))
3527                 return -ENOBUFS;
3528         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3529                         chandef->chan->freq_offset))
3530                 return -ENOBUFS;
3531         switch (chandef->width) {
3532         case NL80211_CHAN_WIDTH_20_NOHT:
3533         case NL80211_CHAN_WIDTH_20:
3534         case NL80211_CHAN_WIDTH_40:
3535                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3536                                 cfg80211_get_chandef_type(chandef)))
3537                         return -ENOBUFS;
3538                 break;
3539         default:
3540                 break;
3541         }
3542         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3543                 return -ENOBUFS;
3544         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3545                 return -ENOBUFS;
3546         if (chandef->center_freq2 &&
3547             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3548                 return -ENOBUFS;
3549         return 0;
3550 }
3551
3552 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3553                               struct cfg80211_registered_device *rdev,
3554                               struct wireless_dev *wdev,
3555                               enum nl80211_commands cmd)
3556 {
3557         struct net_device *dev = wdev->netdev;
3558         void *hdr;
3559
3560         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3561                 cmd != NL80211_CMD_DEL_INTERFACE &&
3562                 cmd != NL80211_CMD_SET_INTERFACE);
3563
3564         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3565         if (!hdr)
3566                 return -1;
3567
3568         if (dev &&
3569             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3570              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3571                 goto nla_put_failure;
3572
3573         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3574             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3575             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3576                               NL80211_ATTR_PAD) ||
3577             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3578             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3579                         rdev->devlist_generation ^
3580                         (cfg80211_rdev_list_generation << 2)) ||
3581             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3582                 goto nla_put_failure;
3583
3584         if (rdev->ops->get_channel) {
3585                 int ret;
3586                 struct cfg80211_chan_def chandef = {};
3587
3588                 ret = rdev_get_channel(rdev, wdev, &chandef);
3589                 if (ret == 0) {
3590                         if (nl80211_send_chandef(msg, &chandef))
3591                                 goto nla_put_failure;
3592                 }
3593         }
3594
3595         if (rdev->ops->get_tx_power) {
3596                 int dbm, ret;
3597
3598                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3599                 if (ret == 0 &&
3600                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3601                                 DBM_TO_MBM(dbm)))
3602                         goto nla_put_failure;
3603         }
3604
3605         wdev_lock(wdev);
3606         switch (wdev->iftype) {
3607         case NL80211_IFTYPE_AP:
3608                 if (wdev->ssid_len &&
3609                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3610                         goto nla_put_failure_locked;
3611                 break;
3612         case NL80211_IFTYPE_STATION:
3613         case NL80211_IFTYPE_P2P_CLIENT:
3614         case NL80211_IFTYPE_ADHOC: {
3615                 const u8 *ssid_ie;
3616                 if (!wdev->current_bss)
3617                         break;
3618                 rcu_read_lock();
3619                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3620                                                WLAN_EID_SSID);
3621                 if (ssid_ie &&
3622                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3623                         goto nla_put_failure_rcu_locked;
3624                 rcu_read_unlock();
3625                 break;
3626                 }
3627         default:
3628                 /* nothing */
3629                 break;
3630         }
3631         wdev_unlock(wdev);
3632
3633         if (rdev->ops->get_txq_stats) {
3634                 struct cfg80211_txq_stats txqstats = {};
3635                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3636
3637                 if (ret == 0 &&
3638                     !nl80211_put_txq_stats(msg, &txqstats,
3639                                            NL80211_ATTR_TXQ_STATS))
3640                         goto nla_put_failure;
3641         }
3642
3643         genlmsg_end(msg, hdr);
3644         return 0;
3645
3646  nla_put_failure_rcu_locked:
3647         rcu_read_unlock();
3648  nla_put_failure_locked:
3649         wdev_unlock(wdev);
3650  nla_put_failure:
3651         genlmsg_cancel(msg, hdr);
3652         return -EMSGSIZE;
3653 }
3654
3655 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3656 {
3657         int wp_idx = 0;
3658         int if_idx = 0;
3659         int wp_start = cb->args[0];
3660         int if_start = cb->args[1];
3661         int filter_wiphy = -1;
3662         struct cfg80211_registered_device *rdev;
3663         struct wireless_dev *wdev;
3664         int ret;
3665
3666         rtnl_lock();
3667         if (!cb->args[2]) {
3668                 struct nl80211_dump_wiphy_state state = {
3669                         .filter_wiphy = -1,
3670                 };
3671
3672                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3673                 if (ret)
3674                         goto out_unlock;
3675
3676                 filter_wiphy = state.filter_wiphy;
3677
3678                 /*
3679                  * if filtering, set cb->args[2] to +1 since 0 is the default
3680                  * value needed to determine that parsing is necessary.
3681                  */
3682                 if (filter_wiphy >= 0)
3683                         cb->args[2] = filter_wiphy + 1;
3684                 else
3685                         cb->args[2] = -1;
3686         } else if (cb->args[2] > 0) {
3687                 filter_wiphy = cb->args[2] - 1;
3688         }
3689
3690         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3691                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3692                         continue;
3693                 if (wp_idx < wp_start) {
3694                         wp_idx++;
3695                         continue;
3696                 }
3697
3698                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3699                         continue;
3700
3701                 if_idx = 0;
3702
3703                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3704                         if (if_idx < if_start) {
3705                                 if_idx++;
3706                                 continue;
3707                         }
3708                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3709                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3710                                                rdev, wdev,
3711                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3712                                 goto out;
3713                         }
3714                         if_idx++;
3715                 }
3716
3717                 wp_idx++;
3718         }
3719  out:
3720         cb->args[0] = wp_idx;
3721         cb->args[1] = if_idx;
3722
3723         ret = skb->len;
3724  out_unlock:
3725         rtnl_unlock();
3726
3727         return ret;
3728 }
3729
3730 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3731 {
3732         struct sk_buff *msg;
3733         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3734         struct wireless_dev *wdev = info->user_ptr[1];
3735
3736         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3737         if (!msg)
3738                 return -ENOMEM;
3739
3740         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3741                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3742                 nlmsg_free(msg);
3743                 return -ENOBUFS;
3744         }
3745
3746         return genlmsg_reply(msg, info);
3747 }
3748
3749 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3750         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3751         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3752         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3753         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3754         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3755         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3756 };
3757
3758 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3759 {
3760         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3761         int flag;
3762
3763         *mntrflags = 0;
3764
3765         if (!nla)
3766                 return -EINVAL;
3767
3768         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3769                 return -EINVAL;
3770
3771         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3772                 if (flags[flag])
3773                         *mntrflags |= (1<<flag);
3774
3775         *mntrflags |= MONITOR_FLAG_CHANGED;
3776
3777         return 0;
3778 }
3779
3780 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3781                                      enum nl80211_iftype type,
3782                                      struct genl_info *info,
3783                                      struct vif_params *params)
3784 {
3785         bool change = false;
3786         int err;
3787
3788         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3789                 if (type != NL80211_IFTYPE_MONITOR)
3790                         return -EINVAL;
3791
3792                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3793                                           &params->flags);
3794                 if (err)
3795                         return err;
3796
3797                 change = true;
3798         }
3799
3800         if (params->flags & MONITOR_FLAG_ACTIVE &&
3801             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3802                 return -EOPNOTSUPP;
3803
3804         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3805                 const u8 *mumimo_groups;
3806                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3807
3808                 if (type != NL80211_IFTYPE_MONITOR)
3809                         return -EINVAL;
3810
3811                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3812                         return -EOPNOTSUPP;
3813
3814                 mumimo_groups =
3815                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3816
3817                 /* bits 0 and 63 are reserved and must be zero */
3818                 if ((mumimo_groups[0] & BIT(0)) ||
3819                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3820                         return -EINVAL;
3821
3822                 params->vht_mumimo_groups = mumimo_groups;
3823                 change = true;
3824         }
3825
3826         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3827                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3828
3829                 if (type != NL80211_IFTYPE_MONITOR)
3830                         return -EINVAL;
3831
3832                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3833                         return -EOPNOTSUPP;
3834
3835                 params->vht_mumimo_follow_addr =
3836                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3837                 change = true;
3838         }
3839
3840         return change ? 1 : 0;
3841 }
3842
3843 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3844                                struct net_device *netdev, u8 use_4addr,
3845                                enum nl80211_iftype iftype)
3846 {
3847         if (!use_4addr) {
3848                 if (netdev && netif_is_bridge_port(netdev))
3849                         return -EBUSY;
3850                 return 0;
3851         }
3852
3853         switch (iftype) {
3854         case NL80211_IFTYPE_AP_VLAN:
3855                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3856                         return 0;
3857                 break;
3858         case NL80211_IFTYPE_STATION:
3859                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3860                         return 0;
3861                 break;
3862         default:
3863                 break;
3864         }
3865
3866         return -EOPNOTSUPP;
3867 }
3868
3869 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3870 {
3871         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3872         struct vif_params params;
3873         int err;
3874         enum nl80211_iftype otype, ntype;
3875         struct net_device *dev = info->user_ptr[1];
3876         bool change = false;
3877
3878         memset(&params, 0, sizeof(params));
3879
3880         otype = ntype = dev->ieee80211_ptr->iftype;
3881
3882         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3883                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3884                 if (otype != ntype)
3885                         change = true;
3886         }
3887
3888         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3889                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3890
3891                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3892                         return -EINVAL;
3893                 if (netif_running(dev))
3894                         return -EBUSY;
3895
3896                 wdev_lock(wdev);
3897                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3898                              IEEE80211_MAX_MESH_ID_LEN);
3899                 wdev->mesh_id_up_len =
3900                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3901                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3902                        wdev->mesh_id_up_len);
3903                 wdev_unlock(wdev);
3904         }
3905
3906         if (info->attrs[NL80211_ATTR_4ADDR]) {
3907                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3908                 change = true;
3909                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3910                 if (err)
3911                         return err;
3912         } else {
3913                 params.use_4addr = -1;
3914         }
3915
3916         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3917         if (err < 0)
3918                 return err;
3919         if (err > 0)
3920                 change = true;
3921
3922         if (change)
3923                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3924         else
3925                 err = 0;
3926
3927         if (!err && params.use_4addr != -1)
3928                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3929
3930         if (change && !err) {
3931                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3932
3933                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3934         }
3935
3936         return err;
3937 }
3938
3939 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3940 {
3941         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3942         struct vif_params params;
3943         struct wireless_dev *wdev;
3944         struct sk_buff *msg;
3945         int err;
3946         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3947
3948         memset(&params, 0, sizeof(params));
3949
3950         if (!info->attrs[NL80211_ATTR_IFNAME])
3951                 return -EINVAL;
3952
3953         if (info->attrs[NL80211_ATTR_IFTYPE])
3954                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3955
3956         if (!rdev->ops->add_virtual_intf)
3957                 return -EOPNOTSUPP;
3958
3959         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3960              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3961             info->attrs[NL80211_ATTR_MAC]) {
3962                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3963                            ETH_ALEN);
3964                 if (!is_valid_ether_addr(params.macaddr))
3965                         return -EADDRNOTAVAIL;
3966         }
3967
3968         if (info->attrs[NL80211_ATTR_4ADDR]) {
3969                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3970                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3971                 if (err)
3972                         return err;
3973         }
3974
3975         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3976                 return -EOPNOTSUPP;
3977
3978         err = nl80211_parse_mon_options(rdev, type, info, &params);
3979         if (err < 0)
3980                 return err;
3981
3982         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3983         if (!msg)
3984                 return -ENOMEM;
3985
3986         wdev = rdev_add_virtual_intf(rdev,
3987                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3988                                 NET_NAME_USER, type, &params);
3989         if (WARN_ON(!wdev)) {
3990                 nlmsg_free(msg);
3991                 return -EPROTO;
3992         } else if (IS_ERR(wdev)) {
3993                 nlmsg_free(msg);
3994                 return PTR_ERR(wdev);
3995         }
3996
3997         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3998                 wdev->owner_nlportid = info->snd_portid;
3999
4000         switch (type) {
4001         case NL80211_IFTYPE_MESH_POINT:
4002                 if (!info->attrs[NL80211_ATTR_MESH_ID])
4003                         break;
4004                 wdev_lock(wdev);
4005                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
4006                              IEEE80211_MAX_MESH_ID_LEN);
4007                 wdev->mesh_id_up_len =
4008                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4009                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4010                        wdev->mesh_id_up_len);
4011                 wdev_unlock(wdev);
4012                 break;
4013         case NL80211_IFTYPE_NAN:
4014         case NL80211_IFTYPE_P2P_DEVICE:
4015                 /*
4016                  * P2P Device and NAN do not have a netdev, so don't go
4017                  * through the netdev notifier and must be added here
4018                  */
4019                 cfg80211_init_wdev(wdev);
4020                 cfg80211_register_wdev(rdev, wdev);
4021                 break;
4022         default:
4023                 break;
4024         }
4025
4026         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4027                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4028                 nlmsg_free(msg);
4029                 return -ENOBUFS;
4030         }
4031
4032         return genlmsg_reply(msg, info);
4033 }
4034
4035 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4036 {
4037         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4038         int ret;
4039
4040         /* to avoid failing a new interface creation due to pending removal */
4041         cfg80211_destroy_ifaces(rdev);
4042
4043         wiphy_lock(&rdev->wiphy);
4044         ret = _nl80211_new_interface(skb, info);
4045         wiphy_unlock(&rdev->wiphy);
4046
4047         return ret;
4048 }
4049
4050 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4051 {
4052         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4053         struct wireless_dev *wdev = info->user_ptr[1];
4054
4055         if (!rdev->ops->del_virtual_intf)
4056                 return -EOPNOTSUPP;
4057
4058         /*
4059          * We hold RTNL, so this is safe, without RTNL opencount cannot
4060          * reach 0, and thus the rdev cannot be deleted.
4061          *
4062          * We need to do it for the dev_close(), since that will call
4063          * the netdev notifiers, and we need to acquire the mutex there
4064          * but don't know if we get there from here or from some other
4065          * place (e.g. "ip link set ... down").
4066          */
4067         mutex_unlock(&rdev->wiphy.mtx);
4068
4069         /*
4070          * If we remove a wireless device without a netdev then clear
4071          * user_ptr[1] so that nl80211_post_doit won't dereference it
4072          * to check if it needs to do dev_put(). Otherwise it crashes
4073          * since the wdev has been freed, unlike with a netdev where
4074          * we need the dev_put() for the netdev to really be freed.
4075          */
4076         if (!wdev->netdev)
4077                 info->user_ptr[1] = NULL;
4078         else
4079                 dev_close(wdev->netdev);
4080
4081         mutex_lock(&rdev->wiphy.mtx);
4082
4083         return rdev_del_virtual_intf(rdev, wdev);
4084 }
4085
4086 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4087 {
4088         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4089         struct net_device *dev = info->user_ptr[1];
4090         u16 noack_map;
4091
4092         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4093                 return -EINVAL;
4094
4095         if (!rdev->ops->set_noack_map)
4096                 return -EOPNOTSUPP;
4097
4098         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4099
4100         return rdev_set_noack_map(rdev, dev, noack_map);
4101 }
4102
4103 struct get_key_cookie {
4104         struct sk_buff *msg;
4105         int error;
4106         int idx;
4107 };
4108
4109 static void get_key_callback(void *c, struct key_params *params)
4110 {
4111         struct nlattr *key;
4112         struct get_key_cookie *cookie = c;
4113
4114         if ((params->key &&
4115              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4116                      params->key_len, params->key)) ||
4117             (params->seq &&
4118              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4119                      params->seq_len, params->seq)) ||
4120             (params->cipher &&
4121              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4122                          params->cipher)))
4123                 goto nla_put_failure;
4124
4125         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4126         if (!key)
4127                 goto nla_put_failure;
4128
4129         if ((params->key &&
4130              nla_put(cookie->msg, NL80211_KEY_DATA,
4131                      params->key_len, params->key)) ||
4132             (params->seq &&
4133              nla_put(cookie->msg, NL80211_KEY_SEQ,
4134                      params->seq_len, params->seq)) ||
4135             (params->cipher &&
4136              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4137                          params->cipher)))
4138                 goto nla_put_failure;
4139
4140         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4141                 goto nla_put_failure;
4142
4143         nla_nest_end(cookie->msg, key);
4144
4145         return;
4146  nla_put_failure:
4147         cookie->error = 1;
4148 }
4149
4150 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4151 {
4152         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4153         int err;
4154         struct net_device *dev = info->user_ptr[1];
4155         u8 key_idx = 0;
4156         const u8 *mac_addr = NULL;
4157         bool pairwise;
4158         struct get_key_cookie cookie = {
4159                 .error = 0,
4160         };
4161         void *hdr;
4162         struct sk_buff *msg;
4163         bool bigtk_support = false;
4164
4165         if (wiphy_ext_feature_isset(&rdev->wiphy,
4166                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4167                 bigtk_support = true;
4168
4169         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4170              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4171             wiphy_ext_feature_isset(&rdev->wiphy,
4172                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4173                 bigtk_support = true;
4174
4175         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4176                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4177
4178                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4179                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4180                         return -EINVAL;
4181                 }
4182         }
4183
4184         if (info->attrs[NL80211_ATTR_MAC])
4185                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4186
4187         pairwise = !!mac_addr;
4188         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4189                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4190
4191                 if (kt != NL80211_KEYTYPE_GROUP &&
4192                     kt != NL80211_KEYTYPE_PAIRWISE)
4193                         return -EINVAL;
4194                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4195         }
4196
4197         if (!rdev->ops->get_key)
4198                 return -EOPNOTSUPP;
4199
4200         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4201                 return -ENOENT;
4202
4203         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4204         if (!msg)
4205                 return -ENOMEM;
4206
4207         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4208                              NL80211_CMD_NEW_KEY);
4209         if (!hdr)
4210                 goto nla_put_failure;
4211
4212         cookie.msg = msg;
4213         cookie.idx = key_idx;
4214
4215         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4216             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4217                 goto nla_put_failure;
4218         if (mac_addr &&
4219             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4220                 goto nla_put_failure;
4221
4222         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4223                            get_key_callback);
4224
4225         if (err)
4226                 goto free_msg;
4227
4228         if (cookie.error)
4229                 goto nla_put_failure;
4230
4231         genlmsg_end(msg, hdr);
4232         return genlmsg_reply(msg, info);
4233
4234  nla_put_failure:
4235         err = -ENOBUFS;
4236  free_msg:
4237         nlmsg_free(msg);
4238         return err;
4239 }
4240
4241 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4242 {
4243         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4244         struct key_parse key;
4245         int err;
4246         struct net_device *dev = info->user_ptr[1];
4247
4248         err = nl80211_parse_key(info, &key);
4249         if (err)
4250                 return err;
4251
4252         if (key.idx < 0)
4253                 return -EINVAL;
4254
4255         /* Only support setting default key and
4256          * Extended Key ID action NL80211_KEY_SET_TX.
4257          */
4258         if (!key.def && !key.defmgmt && !key.defbeacon &&
4259             !(key.p.mode == NL80211_KEY_SET_TX))
4260                 return -EINVAL;
4261
4262         wdev_lock(dev->ieee80211_ptr);
4263
4264         if (key.def) {
4265                 if (!rdev->ops->set_default_key) {
4266                         err = -EOPNOTSUPP;
4267                         goto out;
4268                 }
4269
4270                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4271                 if (err)
4272                         goto out;
4273
4274                 err = rdev_set_default_key(rdev, dev, key.idx,
4275                                                  key.def_uni, key.def_multi);
4276
4277                 if (err)
4278                         goto out;
4279
4280 #ifdef CONFIG_CFG80211_WEXT
4281                 dev->ieee80211_ptr->wext.default_key = key.idx;
4282 #endif
4283         } else if (key.defmgmt) {
4284                 if (key.def_uni || !key.def_multi) {
4285                         err = -EINVAL;
4286                         goto out;
4287                 }
4288
4289                 if (!rdev->ops->set_default_mgmt_key) {
4290                         err = -EOPNOTSUPP;
4291                         goto out;
4292                 }
4293
4294                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4295                 if (err)
4296                         goto out;
4297
4298                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4299                 if (err)
4300                         goto out;
4301
4302 #ifdef CONFIG_CFG80211_WEXT
4303                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4304 #endif
4305         } else if (key.defbeacon) {
4306                 if (key.def_uni || !key.def_multi) {
4307                         err = -EINVAL;
4308                         goto out;
4309                 }
4310
4311                 if (!rdev->ops->set_default_beacon_key) {
4312                         err = -EOPNOTSUPP;
4313                         goto out;
4314                 }
4315
4316                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4317                 if (err)
4318                         goto out;
4319
4320                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4321                 if (err)
4322                         goto out;
4323         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4324                    wiphy_ext_feature_isset(&rdev->wiphy,
4325                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4326                 u8 *mac_addr = NULL;
4327
4328                 if (info->attrs[NL80211_ATTR_MAC])
4329                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4330
4331                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4332                         err = -EINVAL;
4333                         goto out;
4334                 }
4335
4336                 err = rdev_add_key(rdev, dev, key.idx,
4337                                    NL80211_KEYTYPE_PAIRWISE,
4338                                    mac_addr, &key.p);
4339         } else {
4340                 err = -EINVAL;
4341         }
4342  out:
4343         wdev_unlock(dev->ieee80211_ptr);
4344
4345         return err;
4346 }
4347
4348 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4349 {
4350         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4351         int err;
4352         struct net_device *dev = info->user_ptr[1];
4353         struct key_parse key;
4354         const u8 *mac_addr = NULL;
4355
4356         err = nl80211_parse_key(info, &key);
4357         if (err)
4358                 return err;
4359
4360         if (!key.p.key) {
4361                 GENL_SET_ERR_MSG(info, "no key");
4362                 return -EINVAL;
4363         }
4364
4365         if (info->attrs[NL80211_ATTR_MAC])
4366                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4367
4368         if (key.type == -1) {
4369                 if (mac_addr)
4370                         key.type = NL80211_KEYTYPE_PAIRWISE;
4371                 else
4372                         key.type = NL80211_KEYTYPE_GROUP;
4373         }
4374
4375         /* for now */
4376         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4377             key.type != NL80211_KEYTYPE_GROUP) {
4378                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4379                 return -EINVAL;
4380         }
4381
4382         if (key.type == NL80211_KEYTYPE_GROUP &&
4383             info->attrs[NL80211_ATTR_VLAN_ID])
4384                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4385
4386         if (!rdev->ops->add_key)
4387                 return -EOPNOTSUPP;
4388
4389         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4390                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4391                                            mac_addr)) {
4392                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4393                 return -EINVAL;
4394         }
4395
4396         wdev_lock(dev->ieee80211_ptr);
4397         err = nl80211_key_allowed(dev->ieee80211_ptr);
4398         if (err)
4399                 GENL_SET_ERR_MSG(info, "key not allowed");
4400         if (!err) {
4401                 err = rdev_add_key(rdev, dev, key.idx,
4402                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4403                                     mac_addr, &key.p);
4404                 if (err)
4405                         GENL_SET_ERR_MSG(info, "key addition failed");
4406         }
4407         wdev_unlock(dev->ieee80211_ptr);
4408
4409         return err;
4410 }
4411
4412 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4413 {
4414         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4415         int err;
4416         struct net_device *dev = info->user_ptr[1];
4417         u8 *mac_addr = NULL;
4418         struct key_parse key;
4419
4420         err = nl80211_parse_key(info, &key);
4421         if (err)
4422                 return err;
4423
4424         if (info->attrs[NL80211_ATTR_MAC])
4425                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4426
4427         if (key.type == -1) {
4428                 if (mac_addr)
4429                         key.type = NL80211_KEYTYPE_PAIRWISE;
4430                 else
4431                         key.type = NL80211_KEYTYPE_GROUP;
4432         }
4433
4434         /* for now */
4435         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4436             key.type != NL80211_KEYTYPE_GROUP)
4437                 return -EINVAL;
4438
4439         if (!cfg80211_valid_key_idx(rdev, key.idx,
4440                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4441                 return -EINVAL;
4442
4443         if (!rdev->ops->del_key)
4444                 return -EOPNOTSUPP;
4445
4446         wdev_lock(dev->ieee80211_ptr);
4447         err = nl80211_key_allowed(dev->ieee80211_ptr);
4448
4449         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4450             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4451                 err = -ENOENT;
4452
4453         if (!err)
4454                 err = rdev_del_key(rdev, dev, key.idx,
4455                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4456                                    mac_addr);
4457
4458 #ifdef CONFIG_CFG80211_WEXT
4459         if (!err) {
4460                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4461                         dev->ieee80211_ptr->wext.default_key = -1;
4462                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4463                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4464         }
4465 #endif
4466         wdev_unlock(dev->ieee80211_ptr);
4467
4468         return err;
4469 }
4470
4471 /* This function returns an error or the number of nested attributes */
4472 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4473 {
4474         struct nlattr *attr;
4475         int n_entries = 0, tmp;
4476
4477         nla_for_each_nested(attr, nl_attr, tmp) {
4478                 if (nla_len(attr) != ETH_ALEN)
4479                         return -EINVAL;
4480
4481                 n_entries++;
4482         }
4483
4484         return n_entries;
4485 }
4486
4487 /*
4488  * This function parses ACL information and allocates memory for ACL data.
4489  * On successful return, the calling function is responsible to free the
4490  * ACL buffer returned by this function.
4491  */
4492 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4493                                                 struct genl_info *info)
4494 {
4495         enum nl80211_acl_policy acl_policy;
4496         struct nlattr *attr;
4497         struct cfg80211_acl_data *acl;
4498         int i = 0, n_entries, tmp;
4499
4500         if (!wiphy->max_acl_mac_addrs)
4501                 return ERR_PTR(-EOPNOTSUPP);
4502
4503         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4504                 return ERR_PTR(-EINVAL);
4505
4506         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4507         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4508             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4509                 return ERR_PTR(-EINVAL);
4510
4511         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4512                 return ERR_PTR(-EINVAL);
4513
4514         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4515         if (n_entries < 0)
4516                 return ERR_PTR(n_entries);
4517
4518         if (n_entries > wiphy->max_acl_mac_addrs)
4519                 return ERR_PTR(-ENOTSUPP);
4520
4521         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4522         if (!acl)
4523                 return ERR_PTR(-ENOMEM);
4524
4525         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4526                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4527                 i++;
4528         }
4529
4530         acl->n_acl_entries = n_entries;
4531         acl->acl_policy = acl_policy;
4532
4533         return acl;
4534 }
4535
4536 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4537 {
4538         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4539         struct net_device *dev = info->user_ptr[1];
4540         struct cfg80211_acl_data *acl;
4541         int err;
4542
4543         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4544             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4545                 return -EOPNOTSUPP;
4546
4547         if (!dev->ieee80211_ptr->beacon_interval)
4548                 return -EINVAL;
4549
4550         acl = parse_acl_data(&rdev->wiphy, info);
4551         if (IS_ERR(acl))
4552                 return PTR_ERR(acl);
4553
4554         err = rdev_set_mac_acl(rdev, dev, acl);
4555
4556         kfree(acl);
4557
4558         return err;
4559 }
4560
4561 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4562                            u8 *rates, u8 rates_len)
4563 {
4564         u8 i;
4565         u32 mask = 0;
4566
4567         for (i = 0; i < rates_len; i++) {
4568                 int rate = (rates[i] & 0x7f) * 5;
4569                 int ridx;
4570
4571                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4572                         struct ieee80211_rate *srate =
4573                                 &sband->bitrates[ridx];
4574                         if (rate == srate->bitrate) {
4575                                 mask |= 1 << ridx;
4576                                 break;
4577                         }
4578                 }
4579                 if (ridx == sband->n_bitrates)
4580                         return 0; /* rate not found */
4581         }
4582
4583         return mask;
4584 }
4585
4586 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4587                                u8 *rates, u8 rates_len,
4588                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4589 {
4590         u8 i;
4591
4592         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4593
4594         for (i = 0; i < rates_len; i++) {
4595                 int ridx, rbit;
4596
4597                 ridx = rates[i] / 8;
4598                 rbit = BIT(rates[i] % 8);
4599
4600                 /* check validity */
4601                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4602                         return false;
4603
4604                 /* check availability */
4605                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4606                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4607                         mcs[ridx] |= rbit;
4608                 else
4609                         return false;
4610         }
4611
4612         return true;
4613 }
4614
4615 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4616 {
4617         u16 mcs_mask = 0;
4618
4619         switch (vht_mcs_map) {
4620         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4621                 break;
4622         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4623                 mcs_mask = 0x00FF;
4624                 break;
4625         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4626                 mcs_mask = 0x01FF;
4627                 break;
4628         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4629                 mcs_mask = 0x03FF;
4630                 break;
4631         default:
4632                 break;
4633         }
4634
4635         return mcs_mask;
4636 }
4637
4638 static void vht_build_mcs_mask(u16 vht_mcs_map,
4639                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4640 {
4641         u8 nss;
4642
4643         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4644                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4645                 vht_mcs_map >>= 2;
4646         }
4647 }
4648
4649 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4650                              struct nl80211_txrate_vht *txrate,
4651                              u16 mcs[NL80211_VHT_NSS_MAX])
4652 {
4653         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4654         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4655         u8 i;
4656
4657         if (!sband->vht_cap.vht_supported)
4658                 return false;
4659
4660         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4661
4662         /* Build vht_mcs_mask from VHT capabilities */
4663         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4664
4665         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4666                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4667                         mcs[i] = txrate->mcs[i];
4668                 else
4669                         return false;
4670         }
4671
4672         return true;
4673 }
4674
4675 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4676 {
4677         switch (he_mcs_map) {
4678         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4679                 return 0;
4680         case IEEE80211_HE_MCS_SUPPORT_0_7:
4681                 return 0x00FF;
4682         case IEEE80211_HE_MCS_SUPPORT_0_9:
4683                 return 0x03FF;
4684         case IEEE80211_HE_MCS_SUPPORT_0_11:
4685                 return 0xFFF;
4686         default:
4687                 break;
4688         }
4689         return 0;
4690 }
4691
4692 static void he_build_mcs_mask(u16 he_mcs_map,
4693                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4694 {
4695         u8 nss;
4696
4697         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4698                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4699                 he_mcs_map >>= 2;
4700         }
4701 }
4702
4703 static u16 he_get_txmcsmap(struct genl_info *info,
4704                            const struct ieee80211_sta_he_cap *he_cap)
4705 {
4706         struct net_device *dev = info->user_ptr[1];
4707         struct wireless_dev *wdev = dev->ieee80211_ptr;
4708         __le16  tx_mcs;
4709
4710         switch (wdev->chandef.width) {
4711         case NL80211_CHAN_WIDTH_80P80:
4712                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4713                 break;
4714         case NL80211_CHAN_WIDTH_160:
4715                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4716                 break;
4717         default:
4718                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4719                 break;
4720         }
4721         return le16_to_cpu(tx_mcs);
4722 }
4723
4724 static bool he_set_mcs_mask(struct genl_info *info,
4725                             struct wireless_dev *wdev,
4726                             struct ieee80211_supported_band *sband,
4727                             struct nl80211_txrate_he *txrate,
4728                             u16 mcs[NL80211_HE_NSS_MAX])
4729 {
4730         const struct ieee80211_sta_he_cap *he_cap;
4731         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4732         u16 tx_mcs_map = 0;
4733         u8 i;
4734
4735         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4736         if (!he_cap)
4737                 return false;
4738
4739         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4740
4741         tx_mcs_map = he_get_txmcsmap(info, he_cap);
4742
4743         /* Build he_mcs_mask from HE capabilities */
4744         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4745
4746         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4747                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4748                         mcs[i] = txrate->mcs[i];
4749                 else
4750                         return false;
4751         }
4752
4753         return true;
4754 }
4755
4756 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4757                                          struct nlattr *attrs[],
4758                                          enum nl80211_attrs attr,
4759                                          struct cfg80211_bitrate_mask *mask,
4760                                          struct net_device *dev,
4761                                          bool default_all_enabled)
4762 {
4763         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4764         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4765         struct wireless_dev *wdev = dev->ieee80211_ptr;
4766         int rem, i;
4767         struct nlattr *tx_rates;
4768         struct ieee80211_supported_band *sband;
4769         u16 vht_tx_mcs_map, he_tx_mcs_map;
4770
4771         memset(mask, 0, sizeof(*mask));
4772         /* Default to all rates enabled */
4773         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4774                 const struct ieee80211_sta_he_cap *he_cap;
4775
4776                 if (!default_all_enabled)
4777                         break;
4778
4779                 sband = rdev->wiphy.bands[i];
4780
4781                 if (!sband)
4782                         continue;
4783
4784                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4785                 memcpy(mask->control[i].ht_mcs,
4786                        sband->ht_cap.mcs.rx_mask,
4787                        sizeof(mask->control[i].ht_mcs));
4788
4789                 if (sband->vht_cap.vht_supported) {
4790                         vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4791                         vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4792                 }
4793
4794                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4795                 if (!he_cap)
4796                         continue;
4797
4798                 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4799                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4800
4801                 mask->control[i].he_gi = 0xFF;
4802                 mask->control[i].he_ltf = 0xFF;
4803         }
4804
4805         /* if no rates are given set it back to the defaults */
4806         if (!attrs[attr])
4807                 goto out;
4808
4809         /* The nested attribute uses enum nl80211_band as the index. This maps
4810          * directly to the enum nl80211_band values used in cfg80211.
4811          */
4812         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4813         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4814                 enum nl80211_band band = nla_type(tx_rates);
4815                 int err;
4816
4817                 if (band < 0 || band >= NUM_NL80211_BANDS)
4818                         return -EINVAL;
4819                 sband = rdev->wiphy.bands[band];
4820                 if (sband == NULL)
4821                         return -EINVAL;
4822                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4823                                                   tx_rates,
4824                                                   nl80211_txattr_policy,
4825                                                   info->extack);
4826                 if (err)
4827                         return err;
4828                 if (tb[NL80211_TXRATE_LEGACY]) {
4829                         mask->control[band].legacy = rateset_to_mask(
4830                                 sband,
4831                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4832                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4833                         if ((mask->control[band].legacy == 0) &&
4834                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4835                                 return -EINVAL;
4836                 }
4837                 if (tb[NL80211_TXRATE_HT]) {
4838                         if (!ht_rateset_to_mask(
4839                                         sband,
4840                                         nla_data(tb[NL80211_TXRATE_HT]),
4841                                         nla_len(tb[NL80211_TXRATE_HT]),
4842                                         mask->control[band].ht_mcs))
4843                                 return -EINVAL;
4844                 }
4845
4846                 if (tb[NL80211_TXRATE_VHT]) {
4847                         if (!vht_set_mcs_mask(
4848                                         sband,
4849                                         nla_data(tb[NL80211_TXRATE_VHT]),
4850                                         mask->control[band].vht_mcs))
4851                                 return -EINVAL;
4852                 }
4853
4854                 if (tb[NL80211_TXRATE_GI]) {
4855                         mask->control[band].gi =
4856                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4857                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4858                                 return -EINVAL;
4859                 }
4860                 if (tb[NL80211_TXRATE_HE] &&
4861                     !he_set_mcs_mask(info, wdev, sband,
4862                                      nla_data(tb[NL80211_TXRATE_HE]),
4863                                      mask->control[band].he_mcs))
4864                         return -EINVAL;
4865
4866                 if (tb[NL80211_TXRATE_HE_GI])
4867                         mask->control[band].he_gi =
4868                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4869                 if (tb[NL80211_TXRATE_HE_LTF])
4870                         mask->control[band].he_ltf =
4871                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4872
4873                 if (mask->control[band].legacy == 0) {
4874                         /* don't allow empty legacy rates if HT, VHT or HE
4875                          * are not even supported.
4876                          */
4877                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4878                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4879                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4880                                 return -EINVAL;
4881
4882                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4883                                 if (mask->control[band].ht_mcs[i])
4884                                         goto out;
4885
4886                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4887                                 if (mask->control[band].vht_mcs[i])
4888                                         goto out;
4889
4890                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4891                                 if (mask->control[band].he_mcs[i])
4892                                         goto out;
4893
4894                         /* legacy and mcs rates may not be both empty */
4895                         return -EINVAL;
4896                 }
4897         }
4898
4899 out:
4900         return 0;
4901 }
4902
4903 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4904                                    enum nl80211_band band,
4905                                    struct cfg80211_bitrate_mask *beacon_rate)
4906 {
4907         u32 count_ht, count_vht, count_he, i;
4908         u32 rate = beacon_rate->control[band].legacy;
4909
4910         /* Allow only one rate */
4911         if (hweight32(rate) > 1)
4912                 return -EINVAL;
4913
4914         count_ht = 0;
4915         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4916                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4917                         return -EINVAL;
4918                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4919                         count_ht++;
4920                         if (count_ht > 1)
4921                                 return -EINVAL;
4922                 }
4923                 if (count_ht && rate)
4924                         return -EINVAL;
4925         }
4926
4927         count_vht = 0;
4928         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4929                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4930                         return -EINVAL;
4931                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4932                         count_vht++;
4933                         if (count_vht > 1)
4934                                 return -EINVAL;
4935                 }
4936                 if (count_vht && rate)
4937                         return -EINVAL;
4938         }
4939
4940         count_he = 0;
4941         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4942                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
4943                         return -EINVAL;
4944                 } else if (beacon_rate->control[band].he_mcs[i]) {
4945                         count_he++;
4946                         if (count_he > 1)
4947                                 return -EINVAL;
4948                 }
4949                 if (count_he && rate)
4950                         return -EINVAL;
4951         }
4952
4953         if ((count_ht && count_vht && count_he) ||
4954             (!rate && !count_ht && !count_vht && !count_he))
4955                 return -EINVAL;
4956
4957         if (rate &&
4958             !wiphy_ext_feature_isset(&rdev->wiphy,
4959                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4960                 return -EINVAL;
4961         if (count_ht &&
4962             !wiphy_ext_feature_isset(&rdev->wiphy,
4963                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4964                 return -EINVAL;
4965         if (count_vht &&
4966             !wiphy_ext_feature_isset(&rdev->wiphy,
4967                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4968                 return -EINVAL;
4969         if (count_he &&
4970             !wiphy_ext_feature_isset(&rdev->wiphy,
4971                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
4972                 return -EINVAL;
4973
4974         return 0;
4975 }
4976
4977 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4978                                 struct nlattr *attrs[],
4979                                 struct cfg80211_beacon_data *bcn)
4980 {
4981         bool haveinfo = false;
4982         int err;
4983
4984         memset(bcn, 0, sizeof(*bcn));
4985
4986         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4987                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4988                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4989                 if (!bcn->head_len)
4990                         return -EINVAL;
4991                 haveinfo = true;
4992         }
4993
4994         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4995                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4996                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4997                 haveinfo = true;
4998         }
4999
5000         if (!haveinfo)
5001                 return -EINVAL;
5002
5003         if (attrs[NL80211_ATTR_IE]) {
5004                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
5005                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5006         }
5007
5008         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5009                 bcn->proberesp_ies =
5010                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5011                 bcn->proberesp_ies_len =
5012                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5013         }
5014
5015         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5016                 bcn->assocresp_ies =
5017                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5018                 bcn->assocresp_ies_len =
5019                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5020         }
5021
5022         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5023                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5024                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5025         }
5026
5027         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5028                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5029
5030                 err = nla_parse_nested_deprecated(tb,
5031                                                   NL80211_FTM_RESP_ATTR_MAX,
5032                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5033                                                   NULL, NULL);
5034                 if (err)
5035                         return err;
5036
5037                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5038                     wiphy_ext_feature_isset(&rdev->wiphy,
5039                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5040                         bcn->ftm_responder = 1;
5041                 else
5042                         return -EOPNOTSUPP;
5043
5044                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5045                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5046                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5047                 }
5048
5049                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5050                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5051                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5052                 }
5053         } else {
5054                 bcn->ftm_responder = -1;
5055         }
5056
5057         return 0;
5058 }
5059
5060 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5061                                     struct ieee80211_he_obss_pd *he_obss_pd)
5062 {
5063         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5064         int err;
5065
5066         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5067                                he_obss_pd_policy, NULL);
5068         if (err)
5069                 return err;
5070
5071         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5072                 return -EINVAL;
5073
5074         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5075
5076         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5077                 he_obss_pd->min_offset =
5078                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5079         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5080                 he_obss_pd->max_offset =
5081                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5082         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5083                 he_obss_pd->non_srg_max_offset =
5084                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5085
5086         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5087                 return -EINVAL;
5088
5089         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5090                 memcpy(he_obss_pd->bss_color_bitmap,
5091                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5092                        sizeof(he_obss_pd->bss_color_bitmap));
5093
5094         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5095                 memcpy(he_obss_pd->partial_bssid_bitmap,
5096                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5097                        sizeof(he_obss_pd->partial_bssid_bitmap));
5098
5099         he_obss_pd->enable = true;
5100
5101         return 0;
5102 }
5103
5104 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5105                                       struct cfg80211_he_bss_color *he_bss_color)
5106 {
5107         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5108         int err;
5109
5110         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5111                                he_bss_color_policy, NULL);
5112         if (err)
5113                 return err;
5114
5115         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5116                 return -EINVAL;
5117
5118         he_bss_color->color =
5119                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5120         he_bss_color->enabled =
5121                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5122         he_bss_color->partial =
5123                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5124
5125         return 0;
5126 }
5127
5128 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5129                                         struct nlattr *attrs,
5130                                         struct cfg80211_ap_settings *params)
5131 {
5132         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5133         int ret;
5134         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5135
5136         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5137                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5138                 return -EINVAL;
5139
5140         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5141                                NULL, NULL);
5142         if (ret)
5143                 return ret;
5144
5145         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5146             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5147             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5148                 return -EINVAL;
5149
5150         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5151         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5152         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5153         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5154
5155         return 0;
5156 }
5157
5158 static int
5159 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5160                                      struct nlattr *attrs,
5161                                      struct cfg80211_ap_settings *params)
5162 {
5163         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5164         int ret;
5165         struct cfg80211_unsol_bcast_probe_resp *presp =
5166                                         &params->unsol_bcast_probe_resp;
5167
5168         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5169                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5170                 return -EINVAL;
5171
5172         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5173                                attrs, NULL, NULL);
5174         if (ret)
5175                 return ret;
5176
5177         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5178             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5179                 return -EINVAL;
5180
5181         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5182         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5183         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5184         return 0;
5185 }
5186
5187 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5188                                             const u8 *rates)
5189 {
5190         int i;
5191
5192         if (!rates)
5193                 return;
5194
5195         for (i = 0; i < rates[1]; i++) {
5196                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5197                         params->ht_required = true;
5198                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5199                         params->vht_required = true;
5200                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5201                         params->he_required = true;
5202                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5203                         params->sae_h2e_required = true;
5204         }
5205 }
5206
5207 /*
5208  * Since the nl80211 API didn't include, from the beginning, attributes about
5209  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5210  * benefit of drivers that rebuild IEs in the firmware.
5211  */
5212 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5213 {
5214         const struct cfg80211_beacon_data *bcn = &params->beacon;
5215         size_t ies_len = bcn->tail_len;
5216         const u8 *ies = bcn->tail;
5217         const u8 *rates;
5218         const u8 *cap;
5219
5220         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5221         nl80211_check_ap_rate_selectors(params, rates);
5222
5223         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5224         nl80211_check_ap_rate_selectors(params, rates);
5225
5226         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5227         if (cap && cap[1] >= sizeof(*params->ht_cap))
5228                 params->ht_cap = (void *)(cap + 2);
5229         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5230         if (cap && cap[1] >= sizeof(*params->vht_cap))
5231                 params->vht_cap = (void *)(cap + 2);
5232         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5233         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5234                 params->he_cap = (void *)(cap + 3);
5235         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5236         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5237                 params->he_oper = (void *)(cap + 3);
5238 }
5239
5240 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5241                                    struct cfg80211_ap_settings *params)
5242 {
5243         struct wireless_dev *wdev;
5244         bool ret = false;
5245
5246         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5247                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5248                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5249                         continue;
5250
5251                 if (!wdev->preset_chandef.chan)
5252                         continue;
5253
5254                 params->chandef = wdev->preset_chandef;
5255                 ret = true;
5256                 break;
5257         }
5258
5259         return ret;
5260 }
5261
5262 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5263                                     enum nl80211_auth_type auth_type,
5264                                     enum nl80211_commands cmd)
5265 {
5266         if (auth_type > NL80211_AUTHTYPE_MAX)
5267                 return false;
5268
5269         switch (cmd) {
5270         case NL80211_CMD_AUTHENTICATE:
5271                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5272                     auth_type == NL80211_AUTHTYPE_SAE)
5273                         return false;
5274                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5275                                              NL80211_EXT_FEATURE_FILS_STA) &&
5276                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5277                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5278                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5279                         return false;
5280                 return true;
5281         case NL80211_CMD_CONNECT:
5282                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5283                     !wiphy_ext_feature_isset(&rdev->wiphy,
5284                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5285                     auth_type == NL80211_AUTHTYPE_SAE)
5286                         return false;
5287
5288                 /* FILS with SK PFS or PK not supported yet */
5289                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5290                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5291                         return false;
5292                 if (!wiphy_ext_feature_isset(
5293                             &rdev->wiphy,
5294                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5295                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5296                         return false;
5297                 return true;
5298         case NL80211_CMD_START_AP:
5299                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5300                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5301                     auth_type == NL80211_AUTHTYPE_SAE)
5302                         return false;
5303                 /* FILS not supported yet */
5304                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5305                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5306                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5307                         return false;
5308                 return true;
5309         default:
5310                 return false;
5311         }
5312 }
5313
5314 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5315 {
5316         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5317         struct net_device *dev = info->user_ptr[1];
5318         struct wireless_dev *wdev = dev->ieee80211_ptr;
5319         struct cfg80211_ap_settings params;
5320         int err;
5321
5322         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5323             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5324                 return -EOPNOTSUPP;
5325
5326         if (!rdev->ops->start_ap)
5327                 return -EOPNOTSUPP;
5328
5329         if (wdev->beacon_interval)
5330                 return -EALREADY;
5331
5332         memset(&params, 0, sizeof(params));
5333
5334         /* these are required for START_AP */
5335         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5336             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5337             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5338                 return -EINVAL;
5339
5340         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
5341         if (err)
5342                 return err;
5343
5344         params.beacon_interval =
5345                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5346         params.dtim_period =
5347                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5348
5349         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5350                                            params.beacon_interval);
5351         if (err)
5352                 return err;
5353
5354         /*
5355          * In theory, some of these attributes should be required here
5356          * but since they were not used when the command was originally
5357          * added, keep them optional for old user space programs to let
5358          * them continue to work with drivers that do not need the
5359          * additional information -- drivers must check!
5360          */
5361         if (info->attrs[NL80211_ATTR_SSID]) {
5362                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5363                 params.ssid_len =
5364                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5365                 if (params.ssid_len == 0)
5366                         return -EINVAL;
5367         }
5368
5369         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5370                 params.hidden_ssid = nla_get_u32(
5371                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5372
5373         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5374
5375         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5376                 params.auth_type = nla_get_u32(
5377                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5378                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5379                                              NL80211_CMD_START_AP))
5380                         return -EINVAL;
5381         } else
5382                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5383
5384         err = nl80211_crypto_settings(rdev, info, &params.crypto,
5385                                       NL80211_MAX_NR_CIPHER_SUITES);
5386         if (err)
5387                 return err;
5388
5389         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5390                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5391                         return -EOPNOTSUPP;
5392                 params.inactivity_timeout = nla_get_u16(
5393                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5394         }
5395
5396         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5397                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5398                         return -EINVAL;
5399                 params.p2p_ctwindow =
5400                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5401                 if (params.p2p_ctwindow != 0 &&
5402                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5403                         return -EINVAL;
5404         }
5405
5406         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5407                 u8 tmp;
5408
5409                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5410                         return -EINVAL;
5411                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5412                 params.p2p_opp_ps = tmp;
5413                 if (params.p2p_opp_ps != 0 &&
5414                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5415                         return -EINVAL;
5416         }
5417
5418         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5419                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5420                 if (err)
5421                         return err;
5422         } else if (wdev->preset_chandef.chan) {
5423                 params.chandef = wdev->preset_chandef;
5424         } else if (!nl80211_get_ap_channel(rdev, &params))
5425                 return -EINVAL;
5426
5427         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
5428                                            wdev->iftype))
5429                 return -EINVAL;
5430
5431         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5432                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5433                                                     NL80211_ATTR_TX_RATES,
5434                                                     &params.beacon_rate,
5435                                                     dev, false);
5436                 if (err)
5437                         return err;
5438
5439                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5440                                               &params.beacon_rate);
5441                 if (err)
5442                         return err;
5443         }
5444
5445         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5446                 params.smps_mode =
5447                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5448                 switch (params.smps_mode) {
5449                 case NL80211_SMPS_OFF:
5450                         break;
5451                 case NL80211_SMPS_STATIC:
5452                         if (!(rdev->wiphy.features &
5453                               NL80211_FEATURE_STATIC_SMPS))
5454                                 return -EINVAL;
5455                         break;
5456                 case NL80211_SMPS_DYNAMIC:
5457                         if (!(rdev->wiphy.features &
5458                               NL80211_FEATURE_DYNAMIC_SMPS))
5459                                 return -EINVAL;
5460                         break;
5461                 default:
5462                         return -EINVAL;
5463                 }
5464         } else {
5465                 params.smps_mode = NL80211_SMPS_OFF;
5466         }
5467
5468         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5469         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5470                 return -EOPNOTSUPP;
5471
5472         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5473                 params.acl = parse_acl_data(&rdev->wiphy, info);
5474                 if (IS_ERR(params.acl))
5475                         return PTR_ERR(params.acl);
5476         }
5477
5478         params.twt_responder =
5479                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5480
5481         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5482                 err = nl80211_parse_he_obss_pd(
5483                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5484                                         &params.he_obss_pd);
5485                 if (err)
5486                         goto out;
5487         }
5488
5489         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5490                 err = nl80211_parse_he_bss_color(
5491                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5492                                         &params.he_bss_color);
5493                 if (err)
5494                         goto out;
5495         }
5496
5497         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5498                 err = nl80211_parse_fils_discovery(rdev,
5499                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5500                                                    &params);
5501                 if (err)
5502                         goto out;
5503         }
5504
5505         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5506                 err = nl80211_parse_unsol_bcast_probe_resp(
5507                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5508                         &params);
5509                 if (err)
5510                         goto out;
5511         }
5512
5513         nl80211_calculate_ap_params(&params);
5514
5515         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5516                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5517
5518         wdev_lock(wdev);
5519         err = rdev_start_ap(rdev, dev, &params);
5520         if (!err) {
5521                 wdev->preset_chandef = params.chandef;
5522                 wdev->beacon_interval = params.beacon_interval;
5523                 wdev->chandef = params.chandef;
5524                 wdev->ssid_len = params.ssid_len;
5525                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5526
5527                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5528                         wdev->conn_owner_nlportid = info->snd_portid;
5529         }
5530         wdev_unlock(wdev);
5531
5532 out:
5533         kfree(params.acl);
5534
5535         return err;
5536 }
5537
5538 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5539 {
5540         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5541         struct net_device *dev = info->user_ptr[1];
5542         struct wireless_dev *wdev = dev->ieee80211_ptr;
5543         struct cfg80211_beacon_data params;
5544         int err;
5545
5546         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5547             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5548                 return -EOPNOTSUPP;
5549
5550         if (!rdev->ops->change_beacon)
5551                 return -EOPNOTSUPP;
5552
5553         if (!wdev->beacon_interval)
5554                 return -EINVAL;
5555
5556         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5557         if (err)
5558                 return err;
5559
5560         wdev_lock(wdev);
5561         err = rdev_change_beacon(rdev, dev, &params);
5562         wdev_unlock(wdev);
5563
5564         return err;
5565 }
5566
5567 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5568 {
5569         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5570         struct net_device *dev = info->user_ptr[1];
5571
5572         return cfg80211_stop_ap(rdev, dev, false);
5573 }
5574
5575 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5576         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5577         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5578         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5579         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5580         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5581         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5582 };
5583
5584 static int parse_station_flags(struct genl_info *info,
5585                                enum nl80211_iftype iftype,
5586                                struct station_parameters *params)
5587 {
5588         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5589         struct nlattr *nla;
5590         int flag;
5591
5592         /*
5593          * Try parsing the new attribute first so userspace
5594          * can specify both for older kernels.
5595          */
5596         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5597         if (nla) {
5598                 struct nl80211_sta_flag_update *sta_flags;
5599
5600                 sta_flags = nla_data(nla);
5601                 params->sta_flags_mask = sta_flags->mask;
5602                 params->sta_flags_set = sta_flags->set;
5603                 params->sta_flags_set &= params->sta_flags_mask;
5604                 if ((params->sta_flags_mask |
5605                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5606                         return -EINVAL;
5607                 return 0;
5608         }
5609
5610         /* if present, parse the old attribute */
5611
5612         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5613         if (!nla)
5614                 return 0;
5615
5616         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5617                 return -EINVAL;
5618
5619         /*
5620          * Only allow certain flags for interface types so that
5621          * other attributes are silently ignored. Remember that
5622          * this is backward compatibility code with old userspace
5623          * and shouldn't be hit in other cases anyway.
5624          */
5625         switch (iftype) {
5626         case NL80211_IFTYPE_AP:
5627         case NL80211_IFTYPE_AP_VLAN:
5628         case NL80211_IFTYPE_P2P_GO:
5629                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5630                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5631                                          BIT(NL80211_STA_FLAG_WME) |
5632                                          BIT(NL80211_STA_FLAG_MFP);
5633                 break;
5634         case NL80211_IFTYPE_P2P_CLIENT:
5635         case NL80211_IFTYPE_STATION:
5636                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5637                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5638                 break;
5639         case NL80211_IFTYPE_MESH_POINT:
5640                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5641                                          BIT(NL80211_STA_FLAG_MFP) |
5642                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5643                 break;
5644         default:
5645                 return -EINVAL;
5646         }
5647
5648         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5649                 if (flags[flag]) {
5650                         params->sta_flags_set |= (1<<flag);
5651
5652                         /* no longer support new API additions in old API */
5653                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5654                                 return -EINVAL;
5655                 }
5656         }
5657
5658         return 0;
5659 }
5660
5661 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5662 {
5663         struct nlattr *rate;
5664         u32 bitrate;
5665         u16 bitrate_compat;
5666         enum nl80211_rate_info rate_flg;
5667
5668         rate = nla_nest_start_noflag(msg, attr);
5669         if (!rate)
5670                 return false;
5671
5672         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5673         bitrate = cfg80211_calculate_bitrate(info);
5674         /* report 16-bit bitrate only if we can */
5675         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5676         if (bitrate > 0 &&
5677             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5678                 return false;
5679         if (bitrate_compat > 0 &&
5680             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5681                 return false;
5682
5683         switch (info->bw) {
5684         case RATE_INFO_BW_5:
5685                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5686                 break;
5687         case RATE_INFO_BW_10:
5688                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5689                 break;
5690         default:
5691                 WARN_ON(1);
5692                 fallthrough;
5693         case RATE_INFO_BW_20:
5694                 rate_flg = 0;
5695                 break;
5696         case RATE_INFO_BW_40:
5697                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5698                 break;
5699         case RATE_INFO_BW_80:
5700                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5701                 break;
5702         case RATE_INFO_BW_160:
5703                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5704                 break;
5705         case RATE_INFO_BW_HE_RU:
5706                 rate_flg = 0;
5707                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5708         }
5709
5710         if (rate_flg && nla_put_flag(msg, rate_flg))
5711                 return false;
5712
5713         if (info->flags & RATE_INFO_FLAGS_MCS) {
5714                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5715                         return false;
5716                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5717                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5718                         return false;
5719         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5720                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5721                         return false;
5722                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5723                         return false;
5724                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5725                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5726                         return false;
5727         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5728                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5729                         return false;
5730                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5731                         return false;
5732                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5733                         return false;
5734                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5735                         return false;
5736                 if (info->bw == RATE_INFO_BW_HE_RU &&
5737                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5738                                info->he_ru_alloc))
5739                         return false;
5740         }
5741
5742         nla_nest_end(msg, rate);
5743         return true;
5744 }
5745
5746 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5747                                int id)
5748 {
5749         void *attr;
5750         int i = 0;
5751
5752         if (!mask)
5753                 return true;
5754
5755         attr = nla_nest_start_noflag(msg, id);
5756         if (!attr)
5757                 return false;
5758
5759         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5760                 if (!(mask & BIT(i)))
5761                         continue;
5762
5763                 if (nla_put_u8(msg, i, signal[i]))
5764                         return false;
5765         }
5766
5767         nla_nest_end(msg, attr);
5768
5769         return true;
5770 }
5771
5772 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5773                                 u32 seq, int flags,
5774                                 struct cfg80211_registered_device *rdev,
5775                                 struct net_device *dev,
5776                                 const u8 *mac_addr, struct station_info *sinfo)
5777 {
5778         void *hdr;
5779         struct nlattr *sinfoattr, *bss_param;
5780
5781         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5782         if (!hdr) {
5783                 cfg80211_sinfo_release_content(sinfo);
5784                 return -1;
5785         }
5786
5787         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5788             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5789             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5790                 goto nla_put_failure;
5791
5792         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5793         if (!sinfoattr)
5794                 goto nla_put_failure;
5795
5796 #define PUT_SINFO(attr, memb, type) do {                                \
5797         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5798         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5799             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5800                              sinfo->memb))                              \
5801                 goto nla_put_failure;                                   \
5802         } while (0)
5803 #define PUT_SINFO_U64(attr, memb) do {                                  \
5804         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5805             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5806                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5807                 goto nla_put_failure;                                   \
5808         } while (0)
5809
5810         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5811         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5812         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5813
5814         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5815                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5816             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5817                         (u32)sinfo->rx_bytes))
5818                 goto nla_put_failure;
5819
5820         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5821                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5822             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5823                         (u32)sinfo->tx_bytes))
5824                 goto nla_put_failure;
5825
5826         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5827         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5828         PUT_SINFO(LLID, llid, u16);
5829         PUT_SINFO(PLID, plid, u16);
5830         PUT_SINFO(PLINK_STATE, plink_state, u8);
5831         PUT_SINFO_U64(RX_DURATION, rx_duration);
5832         PUT_SINFO_U64(TX_DURATION, tx_duration);
5833
5834         if (wiphy_ext_feature_isset(&rdev->wiphy,
5835                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5836                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5837
5838         switch (rdev->wiphy.signal_type) {
5839         case CFG80211_SIGNAL_TYPE_MBM:
5840                 PUT_SINFO(SIGNAL, signal, u8);
5841                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5842                 break;
5843         default:
5844                 break;
5845         }
5846         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5847                 if (!nl80211_put_signal(msg, sinfo->chains,
5848                                         sinfo->chain_signal,
5849                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5850                         goto nla_put_failure;
5851         }
5852         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5853                 if (!nl80211_put_signal(msg, sinfo->chains,
5854                                         sinfo->chain_signal_avg,
5855                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5856                         goto nla_put_failure;
5857         }
5858         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5859                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5860                                           NL80211_STA_INFO_TX_BITRATE))
5861                         goto nla_put_failure;
5862         }
5863         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5864                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5865                                           NL80211_STA_INFO_RX_BITRATE))
5866                         goto nla_put_failure;
5867         }
5868
5869         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5870         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5871         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5872         PUT_SINFO(TX_FAILED, tx_failed, u32);
5873         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5874         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5875         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5876         PUT_SINFO(LOCAL_PM, local_pm, u32);
5877         PUT_SINFO(PEER_PM, peer_pm, u32);
5878         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5879         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5880         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5881
5882         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5883                 bss_param = nla_nest_start_noflag(msg,
5884                                                   NL80211_STA_INFO_BSS_PARAM);
5885                 if (!bss_param)
5886                         goto nla_put_failure;
5887
5888                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5889                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5890                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5891                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5892                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5893                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5894                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5895                                sinfo->bss_param.dtim_period) ||
5896                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5897                                 sinfo->bss_param.beacon_interval))
5898                         goto nla_put_failure;
5899
5900                 nla_nest_end(msg, bss_param);
5901         }
5902         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5903             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5904                     sizeof(struct nl80211_sta_flag_update),
5905                     &sinfo->sta_flags))
5906                 goto nla_put_failure;
5907
5908         PUT_SINFO_U64(T_OFFSET, t_offset);
5909         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5910         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5911         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5912         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5913         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5914         if (wiphy_ext_feature_isset(&rdev->wiphy,
5915                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5916                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5917                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5918         }
5919
5920 #undef PUT_SINFO
5921 #undef PUT_SINFO_U64
5922
5923         if (sinfo->pertid) {
5924                 struct nlattr *tidsattr;
5925                 int tid;
5926
5927                 tidsattr = nla_nest_start_noflag(msg,
5928                                                  NL80211_STA_INFO_TID_STATS);
5929                 if (!tidsattr)
5930                         goto nla_put_failure;
5931
5932                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5933                         struct cfg80211_tid_stats *tidstats;
5934                         struct nlattr *tidattr;
5935
5936                         tidstats = &sinfo->pertid[tid];
5937
5938                         if (!tidstats->filled)
5939                                 continue;
5940
5941                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5942                         if (!tidattr)
5943                                 goto nla_put_failure;
5944
5945 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5946         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5947             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5948                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5949                 goto nla_put_failure;                                   \
5950         } while (0)
5951
5952                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5953                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5954                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5955                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5956
5957 #undef PUT_TIDVAL_U64
5958                         if ((tidstats->filled &
5959                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5960                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5961                                                    NL80211_TID_STATS_TXQ_STATS))
5962                                 goto nla_put_failure;
5963
5964                         nla_nest_end(msg, tidattr);
5965                 }
5966
5967                 nla_nest_end(msg, tidsattr);
5968         }
5969
5970         nla_nest_end(msg, sinfoattr);
5971
5972         if (sinfo->assoc_req_ies_len &&
5973             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5974                     sinfo->assoc_req_ies))
5975                 goto nla_put_failure;
5976
5977         cfg80211_sinfo_release_content(sinfo);
5978         genlmsg_end(msg, hdr);
5979         return 0;
5980
5981  nla_put_failure:
5982         cfg80211_sinfo_release_content(sinfo);
5983         genlmsg_cancel(msg, hdr);
5984         return -EMSGSIZE;
5985 }
5986
5987 static int nl80211_dump_station(struct sk_buff *skb,
5988                                 struct netlink_callback *cb)
5989 {
5990         struct station_info sinfo;
5991         struct cfg80211_registered_device *rdev;
5992         struct wireless_dev *wdev;
5993         u8 mac_addr[ETH_ALEN];
5994         int sta_idx = cb->args[2];
5995         int err;
5996
5997         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5998         if (err)
5999                 return err;
6000         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6001         __acquire(&rdev->wiphy.mtx);
6002
6003         if (!wdev->netdev) {
6004                 err = -EINVAL;
6005                 goto out_err;
6006         }
6007
6008         if (!rdev->ops->dump_station) {
6009                 err = -EOPNOTSUPP;
6010                 goto out_err;
6011         }
6012
6013         while (1) {
6014                 memset(&sinfo, 0, sizeof(sinfo));
6015                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6016                                         mac_addr, &sinfo);
6017                 if (err == -ENOENT)
6018                         break;
6019                 if (err)
6020                         goto out_err;
6021
6022                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6023                                 NETLINK_CB(cb->skb).portid,
6024                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6025                                 rdev, wdev->netdev, mac_addr,
6026                                 &sinfo) < 0)
6027                         goto out;
6028
6029                 sta_idx++;
6030         }
6031
6032  out:
6033         cb->args[2] = sta_idx;
6034         err = skb->len;
6035  out_err:
6036         wiphy_unlock(&rdev->wiphy);
6037
6038         return err;
6039 }
6040
6041 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6042 {
6043         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6044         struct net_device *dev = info->user_ptr[1];
6045         struct station_info sinfo;
6046         struct sk_buff *msg;
6047         u8 *mac_addr = NULL;
6048         int err;
6049
6050         memset(&sinfo, 0, sizeof(sinfo));
6051
6052         if (!info->attrs[NL80211_ATTR_MAC])
6053                 return -EINVAL;
6054
6055         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6056
6057         if (!rdev->ops->get_station)
6058                 return -EOPNOTSUPP;
6059
6060         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6061         if (err)
6062                 return err;
6063
6064         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6065         if (!msg) {
6066                 cfg80211_sinfo_release_content(&sinfo);
6067                 return -ENOMEM;
6068         }
6069
6070         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6071                                  info->snd_portid, info->snd_seq, 0,
6072                                  rdev, dev, mac_addr, &sinfo) < 0) {
6073                 nlmsg_free(msg);
6074                 return -ENOBUFS;
6075         }
6076
6077         return genlmsg_reply(msg, info);
6078 }
6079
6080 int cfg80211_check_station_change(struct wiphy *wiphy,
6081                                   struct station_parameters *params,
6082                                   enum cfg80211_station_type statype)
6083 {
6084         if (params->listen_interval != -1 &&
6085             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6086                 return -EINVAL;
6087
6088         if (params->support_p2p_ps != -1 &&
6089             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6090                 return -EINVAL;
6091
6092         if (params->aid &&
6093             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6094             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6095                 return -EINVAL;
6096
6097         /* When you run into this, adjust the code below for the new flag */
6098         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6099
6100         switch (statype) {
6101         case CFG80211_STA_MESH_PEER_KERNEL:
6102         case CFG80211_STA_MESH_PEER_USER:
6103                 /*
6104                  * No ignoring the TDLS flag here -- the userspace mesh
6105                  * code doesn't have the bug of including TDLS in the
6106                  * mask everywhere.
6107                  */
6108                 if (params->sta_flags_mask &
6109                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6110                                   BIT(NL80211_STA_FLAG_MFP) |
6111                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6112                         return -EINVAL;
6113                 break;
6114         case CFG80211_STA_TDLS_PEER_SETUP:
6115         case CFG80211_STA_TDLS_PEER_ACTIVE:
6116                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6117                         return -EINVAL;
6118                 /* ignore since it can't change */
6119                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6120                 break;
6121         default:
6122                 /* disallow mesh-specific things */
6123                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6124                         return -EINVAL;
6125                 if (params->local_pm)
6126                         return -EINVAL;
6127                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6128                         return -EINVAL;
6129         }
6130
6131         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6132             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6133                 /* TDLS can't be set, ... */
6134                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6135                         return -EINVAL;
6136                 /*
6137                  * ... but don't bother the driver with it. This works around
6138                  * a hostapd/wpa_supplicant issue -- it always includes the
6139                  * TLDS_PEER flag in the mask even for AP mode.
6140                  */
6141                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6142         }
6143
6144         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6145             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6146                 /* reject other things that can't change */
6147                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6148                         return -EINVAL;
6149                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6150                         return -EINVAL;
6151                 if (params->supported_rates)
6152                         return -EINVAL;
6153                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
6154                     params->he_capa)
6155                         return -EINVAL;
6156         }
6157
6158         if (statype != CFG80211_STA_AP_CLIENT &&
6159             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6160                 if (params->vlan)
6161                         return -EINVAL;
6162         }
6163
6164         switch (statype) {
6165         case CFG80211_STA_AP_MLME_CLIENT:
6166                 /* Use this only for authorizing/unauthorizing a station */
6167                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6168                         return -EOPNOTSUPP;
6169                 break;
6170         case CFG80211_STA_AP_CLIENT:
6171         case CFG80211_STA_AP_CLIENT_UNASSOC:
6172                 /* accept only the listed bits */
6173                 if (params->sta_flags_mask &
6174                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6175                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6176                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6177                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6178                                   BIT(NL80211_STA_FLAG_WME) |
6179                                   BIT(NL80211_STA_FLAG_MFP)))
6180                         return -EINVAL;
6181
6182                 /* but authenticated/associated only if driver handles it */
6183                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6184                     params->sta_flags_mask &
6185                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6186                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6187                         return -EINVAL;
6188                 break;
6189         case CFG80211_STA_IBSS:
6190         case CFG80211_STA_AP_STA:
6191                 /* reject any changes other than AUTHORIZED */
6192                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6193                         return -EINVAL;
6194                 break;
6195         case CFG80211_STA_TDLS_PEER_SETUP:
6196                 /* reject any changes other than AUTHORIZED or WME */
6197                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6198                                                BIT(NL80211_STA_FLAG_WME)))
6199                         return -EINVAL;
6200                 /* force (at least) rates when authorizing */
6201                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6202                     !params->supported_rates)
6203                         return -EINVAL;
6204                 break;
6205         case CFG80211_STA_TDLS_PEER_ACTIVE:
6206                 /* reject any changes */
6207                 return -EINVAL;
6208         case CFG80211_STA_MESH_PEER_KERNEL:
6209                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6210                         return -EINVAL;
6211                 break;
6212         case CFG80211_STA_MESH_PEER_USER:
6213                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6214                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6215                         return -EINVAL;
6216                 break;
6217         }
6218
6219         /*
6220          * Older kernel versions ignored this attribute entirely, so don't
6221          * reject attempts to update it but mark it as unused instead so the
6222          * driver won't look at the data.
6223          */
6224         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6225             statype != CFG80211_STA_TDLS_PEER_SETUP)
6226                 params->opmode_notif_used = false;
6227
6228         return 0;
6229 }
6230 EXPORT_SYMBOL(cfg80211_check_station_change);
6231
6232 /*
6233  * Get vlan interface making sure it is running and on the right wiphy.
6234  */
6235 static struct net_device *get_vlan(struct genl_info *info,
6236                                    struct cfg80211_registered_device *rdev)
6237 {
6238         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6239         struct net_device *v;
6240         int ret;
6241
6242         if (!vlanattr)
6243                 return NULL;
6244
6245         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6246         if (!v)
6247                 return ERR_PTR(-ENODEV);
6248
6249         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6250                 ret = -EINVAL;
6251                 goto error;
6252         }
6253
6254         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6255             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6256             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6257                 ret = -EINVAL;
6258                 goto error;
6259         }
6260
6261         if (!netif_running(v)) {
6262                 ret = -ENETDOWN;
6263                 goto error;
6264         }
6265
6266         return v;
6267  error:
6268         dev_put(v);
6269         return ERR_PTR(ret);
6270 }
6271
6272 static const struct nla_policy
6273 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6274         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6275         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6276 };
6277
6278 static int nl80211_parse_sta_wme(struct genl_info *info,
6279                                  struct station_parameters *params)
6280 {
6281         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6282         struct nlattr *nla;
6283         int err;
6284
6285         /* parse WME attributes if present */
6286         if (!info->attrs[NL80211_ATTR_STA_WME])
6287                 return 0;
6288
6289         nla = info->attrs[NL80211_ATTR_STA_WME];
6290         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6291                                           nl80211_sta_wme_policy,
6292                                           info->extack);
6293         if (err)
6294                 return err;
6295
6296         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6297                 params->uapsd_queues = nla_get_u8(
6298                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6299         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6300                 return -EINVAL;
6301
6302         if (tb[NL80211_STA_WME_MAX_SP])
6303                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6304
6305         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6306                 return -EINVAL;
6307
6308         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6309
6310         return 0;
6311 }
6312
6313 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6314                                       struct station_parameters *params)
6315 {
6316         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6317                 params->supported_channels =
6318                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6319                 params->supported_channels_len =
6320                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6321                 /*
6322                  * Need to include at least one (first channel, number of
6323                  * channels) tuple for each subband (checked in policy),
6324                  * and must have proper tuples for the rest of the data as well.
6325                  */
6326                 if (params->supported_channels_len % 2)
6327                         return -EINVAL;
6328         }
6329
6330         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6331                 params->supported_oper_classes =
6332                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6333                 params->supported_oper_classes_len =
6334                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6335         }
6336         return 0;
6337 }
6338
6339 static int nl80211_set_station_tdls(struct genl_info *info,
6340                                     struct station_parameters *params)
6341 {
6342         int err;
6343         /* Dummy STA entry gets updated once the peer capabilities are known */
6344         if (info->attrs[NL80211_ATTR_PEER_AID])
6345                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6346         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6347                 params->ht_capa =
6348                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6349         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6350                 params->vht_capa =
6351                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6352         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6353                 params->he_capa =
6354                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6355                 params->he_capa_len =
6356                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6357         }
6358
6359         err = nl80211_parse_sta_channel_info(info, params);
6360         if (err)
6361                 return err;
6362
6363         return nl80211_parse_sta_wme(info, params);
6364 }
6365
6366 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6367                                              struct station_parameters *params)
6368 {
6369         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6370         int idx;
6371
6372         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6373                 if (!rdev->ops->set_tx_power ||
6374                     !wiphy_ext_feature_isset(&rdev->wiphy,
6375                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6376                         return -EOPNOTSUPP;
6377
6378                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6379                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6380
6381                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6382                         idx = NL80211_ATTR_STA_TX_POWER;
6383
6384                         if (info->attrs[idx])
6385                                 params->txpwr.power =
6386                                         nla_get_s16(info->attrs[idx]);
6387                         else
6388                                 return -EINVAL;
6389                 }
6390                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6391         }
6392
6393         return 0;
6394 }
6395
6396 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6397 {
6398         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6399         struct net_device *dev = info->user_ptr[1];
6400         struct station_parameters params;
6401         u8 *mac_addr;
6402         int err;
6403
6404         memset(&params, 0, sizeof(params));
6405
6406         if (!rdev->ops->change_station)
6407                 return -EOPNOTSUPP;
6408
6409         /*
6410          * AID and listen_interval properties can be set only for unassociated
6411          * station. Include these parameters here and will check them in
6412          * cfg80211_check_station_change().
6413          */
6414         if (info->attrs[NL80211_ATTR_STA_AID])
6415                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6416
6417         if (info->attrs[NL80211_ATTR_VLAN_ID])
6418                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6419
6420         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6421                 params.listen_interval =
6422                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6423         else
6424                 params.listen_interval = -1;
6425
6426         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6427                 params.support_p2p_ps =
6428                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6429         else
6430                 params.support_p2p_ps = -1;
6431
6432         if (!info->attrs[NL80211_ATTR_MAC])
6433                 return -EINVAL;
6434
6435         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6436
6437         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6438                 params.supported_rates =
6439                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6440                 params.supported_rates_len =
6441                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6442         }
6443
6444         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6445                 params.capability =
6446                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6447                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6448         }
6449
6450         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6451                 params.ext_capab =
6452                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6453                 params.ext_capab_len =
6454                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6455         }
6456
6457         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6458                 return -EINVAL;
6459
6460         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6461                 params.plink_action =
6462                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6463
6464         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6465                 params.plink_state =
6466                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6467                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6468                         params.peer_aid = nla_get_u16(
6469                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6470                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6471         }
6472
6473         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6474                 params.local_pm = nla_get_u32(
6475                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6476
6477         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6478                 params.opmode_notif_used = true;
6479                 params.opmode_notif =
6480                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6481         }
6482
6483         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6484                 params.he_6ghz_capa =
6485                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6486
6487         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6488                 params.airtime_weight =
6489                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6490
6491         if (params.airtime_weight &&
6492             !wiphy_ext_feature_isset(&rdev->wiphy,
6493                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6494                 return -EOPNOTSUPP;
6495
6496         err = nl80211_parse_sta_txpower_setting(info, &params);
6497         if (err)
6498                 return err;
6499
6500         /* Include parameters for TDLS peer (will check later) */
6501         err = nl80211_set_station_tdls(info, &params);
6502         if (err)
6503                 return err;
6504
6505         params.vlan = get_vlan(info, rdev);
6506         if (IS_ERR(params.vlan))
6507                 return PTR_ERR(params.vlan);
6508
6509         switch (dev->ieee80211_ptr->iftype) {
6510         case NL80211_IFTYPE_AP:
6511         case NL80211_IFTYPE_AP_VLAN:
6512         case NL80211_IFTYPE_P2P_GO:
6513         case NL80211_IFTYPE_P2P_CLIENT:
6514         case NL80211_IFTYPE_STATION:
6515         case NL80211_IFTYPE_ADHOC:
6516         case NL80211_IFTYPE_MESH_POINT:
6517                 break;
6518         default:
6519                 err = -EOPNOTSUPP;
6520                 goto out_put_vlan;
6521         }
6522
6523         /* driver will call cfg80211_check_station_change() */
6524         err = rdev_change_station(rdev, dev, mac_addr, &params);
6525
6526  out_put_vlan:
6527         if (params.vlan)
6528                 dev_put(params.vlan);
6529
6530         return err;
6531 }
6532
6533 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6534 {
6535         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6536         int err;
6537         struct net_device *dev = info->user_ptr[1];
6538         struct station_parameters params;
6539         u8 *mac_addr = NULL;
6540         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6541                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6542
6543         memset(&params, 0, sizeof(params));
6544
6545         if (!rdev->ops->add_station)
6546                 return -EOPNOTSUPP;
6547
6548         if (!info->attrs[NL80211_ATTR_MAC])
6549                 return -EINVAL;
6550
6551         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6552                 return -EINVAL;
6553
6554         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6555                 return -EINVAL;
6556
6557         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6558             !info->attrs[NL80211_ATTR_PEER_AID])
6559                 return -EINVAL;
6560
6561         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6562         params.supported_rates =
6563                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6564         params.supported_rates_len =
6565                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6566         params.listen_interval =
6567                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6568
6569         if (info->attrs[NL80211_ATTR_VLAN_ID])
6570                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6571
6572         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6573                 params.support_p2p_ps =
6574                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6575         } else {
6576                 /*
6577                  * if not specified, assume it's supported for P2P GO interface,
6578                  * and is NOT supported for AP interface
6579                  */
6580                 params.support_p2p_ps =
6581                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6582         }
6583
6584         if (info->attrs[NL80211_ATTR_PEER_AID])
6585                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6586         else
6587                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6588
6589         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6590                 params.capability =
6591                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6592                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6593         }
6594
6595         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6596                 params.ext_capab =
6597                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6598                 params.ext_capab_len =
6599                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6600         }
6601
6602         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6603                 params.ht_capa =
6604                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6605
6606         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6607                 params.vht_capa =
6608                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6609
6610         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6611                 params.he_capa =
6612                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6613                 params.he_capa_len =
6614                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6615         }
6616
6617         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6618                 params.he_6ghz_capa =
6619                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6620
6621         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6622                 params.opmode_notif_used = true;
6623                 params.opmode_notif =
6624                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6625         }
6626
6627         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6628                 params.plink_action =
6629                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6630
6631         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6632                 params.airtime_weight =
6633                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6634
6635         if (params.airtime_weight &&
6636             !wiphy_ext_feature_isset(&rdev->wiphy,
6637                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6638                 return -EOPNOTSUPP;
6639
6640         err = nl80211_parse_sta_txpower_setting(info, &params);
6641         if (err)
6642                 return err;
6643
6644         err = nl80211_parse_sta_channel_info(info, &params);
6645         if (err)
6646                 return err;
6647
6648         err = nl80211_parse_sta_wme(info, &params);
6649         if (err)
6650                 return err;
6651
6652         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6653                 return -EINVAL;
6654
6655         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6656          * as userspace might just pass through the capabilities from the IEs
6657          * directly, rather than enforcing this restriction and returning an
6658          * error in this case.
6659          */
6660         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6661                 params.ht_capa = NULL;
6662                 params.vht_capa = NULL;
6663
6664                 /* HE requires WME */
6665                 if (params.he_capa_len || params.he_6ghz_capa)
6666                         return -EINVAL;
6667         }
6668
6669         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6670         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6671                 return -EINVAL;
6672
6673         /* When you run into this, adjust the code below for the new flag */
6674         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6675
6676         switch (dev->ieee80211_ptr->iftype) {
6677         case NL80211_IFTYPE_AP:
6678         case NL80211_IFTYPE_AP_VLAN:
6679         case NL80211_IFTYPE_P2P_GO:
6680                 /* ignore WME attributes if iface/sta is not capable */
6681                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6682                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6683                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6684
6685                 /* TDLS peers cannot be added */
6686                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6687                     info->attrs[NL80211_ATTR_PEER_AID])
6688                         return -EINVAL;
6689                 /* but don't bother the driver with it */
6690                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6691
6692                 /* allow authenticated/associated only if driver handles it */
6693                 if (!(rdev->wiphy.features &
6694                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6695                     params.sta_flags_mask & auth_assoc)
6696                         return -EINVAL;
6697
6698                 /* Older userspace, or userspace wanting to be compatible with
6699                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6700                  * and assoc flags in the mask, but assumes the station will be
6701                  * added as associated anyway since this was the required driver
6702                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6703                  * introduced.
6704                  * In order to not bother drivers with this quirk in the API
6705                  * set the flags in both the mask and set for new stations in
6706                  * this case.
6707                  */
6708                 if (!(params.sta_flags_mask & auth_assoc)) {
6709                         params.sta_flags_mask |= auth_assoc;
6710                         params.sta_flags_set |= auth_assoc;
6711                 }
6712
6713                 /* must be last in here for error handling */
6714                 params.vlan = get_vlan(info, rdev);
6715                 if (IS_ERR(params.vlan))
6716                         return PTR_ERR(params.vlan);
6717                 break;
6718         case NL80211_IFTYPE_MESH_POINT:
6719                 /* ignore uAPSD data */
6720                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6721
6722                 /* associated is disallowed */
6723                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6724                         return -EINVAL;
6725                 /* TDLS peers cannot be added */
6726                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6727                     info->attrs[NL80211_ATTR_PEER_AID])
6728                         return -EINVAL;
6729                 break;
6730         case NL80211_IFTYPE_STATION:
6731         case NL80211_IFTYPE_P2P_CLIENT:
6732                 /* ignore uAPSD data */
6733                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6734
6735                 /* these are disallowed */
6736                 if (params.sta_flags_mask &
6737                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6738                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6739                         return -EINVAL;
6740                 /* Only TDLS peers can be added */
6741                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6742                         return -EINVAL;
6743                 /* Can only add if TDLS ... */
6744                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6745                         return -EOPNOTSUPP;
6746                 /* ... with external setup is supported */
6747                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6748                         return -EOPNOTSUPP;
6749                 /*
6750                  * Older wpa_supplicant versions always mark the TDLS peer
6751                  * as authorized, but it shouldn't yet be.
6752                  */
6753                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6754                 break;
6755         default:
6756                 return -EOPNOTSUPP;
6757         }
6758
6759         /* be aware of params.vlan when changing code here */
6760
6761         err = rdev_add_station(rdev, dev, mac_addr, &params);
6762
6763         if (params.vlan)
6764                 dev_put(params.vlan);
6765         return err;
6766 }
6767
6768 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6769 {
6770         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6771         struct net_device *dev = info->user_ptr[1];
6772         struct station_del_parameters params;
6773
6774         memset(&params, 0, sizeof(params));
6775
6776         if (info->attrs[NL80211_ATTR_MAC])
6777                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6778
6779         switch (dev->ieee80211_ptr->iftype) {
6780         case NL80211_IFTYPE_AP:
6781         case NL80211_IFTYPE_AP_VLAN:
6782         case NL80211_IFTYPE_MESH_POINT:
6783         case NL80211_IFTYPE_P2P_GO:
6784                 /* always accept these */
6785                 break;
6786         case NL80211_IFTYPE_ADHOC:
6787                 /* conditionally accept */
6788                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6789                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6790                         break;
6791                 return -EINVAL;
6792         default:
6793                 return -EINVAL;
6794         }
6795
6796         if (!rdev->ops->del_station)
6797                 return -EOPNOTSUPP;
6798
6799         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6800                 params.subtype =
6801                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6802                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6803                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6804                         return -EINVAL;
6805         } else {
6806                 /* Default to Deauthentication frame */
6807                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6808         }
6809
6810         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6811                 params.reason_code =
6812                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6813                 if (params.reason_code == 0)
6814                         return -EINVAL; /* 0 is reserved */
6815         } else {
6816                 /* Default to reason code 2 */
6817                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6818         }
6819
6820         return rdev_del_station(rdev, dev, &params);
6821 }
6822
6823 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6824                                 int flags, struct net_device *dev,
6825                                 u8 *dst, u8 *next_hop,
6826                                 struct mpath_info *pinfo)
6827 {
6828         void *hdr;
6829         struct nlattr *pinfoattr;
6830
6831         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6832         if (!hdr)
6833                 return -1;
6834
6835         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6836             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6837             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6838             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6839                 goto nla_put_failure;
6840
6841         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6842         if (!pinfoattr)
6843                 goto nla_put_failure;
6844         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6845             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6846                         pinfo->frame_qlen))
6847                 goto nla_put_failure;
6848         if (((pinfo->filled & MPATH_INFO_SN) &&
6849              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6850             ((pinfo->filled & MPATH_INFO_METRIC) &&
6851              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6852                          pinfo->metric)) ||
6853             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6854              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6855                          pinfo->exptime)) ||
6856             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6857              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6858                         pinfo->flags)) ||
6859             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6860              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6861                          pinfo->discovery_timeout)) ||
6862             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6863              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6864                         pinfo->discovery_retries)) ||
6865             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6866              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6867                         pinfo->hop_count)) ||
6868             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6869              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6870                          pinfo->path_change_count)))
6871                 goto nla_put_failure;
6872
6873         nla_nest_end(msg, pinfoattr);
6874
6875         genlmsg_end(msg, hdr);
6876         return 0;
6877
6878  nla_put_failure:
6879         genlmsg_cancel(msg, hdr);
6880         return -EMSGSIZE;
6881 }
6882
6883 static int nl80211_dump_mpath(struct sk_buff *skb,
6884                               struct netlink_callback *cb)
6885 {
6886         struct mpath_info pinfo;
6887         struct cfg80211_registered_device *rdev;
6888         struct wireless_dev *wdev;
6889         u8 dst[ETH_ALEN];
6890         u8 next_hop[ETH_ALEN];
6891         int path_idx = cb->args[2];
6892         int err;
6893
6894         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6895         if (err)
6896                 return err;
6897         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6898         __acquire(&rdev->wiphy.mtx);
6899
6900         if (!rdev->ops->dump_mpath) {
6901                 err = -EOPNOTSUPP;
6902                 goto out_err;
6903         }
6904
6905         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6906                 err = -EOPNOTSUPP;
6907                 goto out_err;
6908         }
6909
6910         while (1) {
6911                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6912                                       next_hop, &pinfo);
6913                 if (err == -ENOENT)
6914                         break;
6915                 if (err)
6916                         goto out_err;
6917
6918                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6919                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6920                                        wdev->netdev, dst, next_hop,
6921                                        &pinfo) < 0)
6922                         goto out;
6923
6924                 path_idx++;
6925         }
6926
6927  out:
6928         cb->args[2] = path_idx;
6929         err = skb->len;
6930  out_err:
6931         wiphy_unlock(&rdev->wiphy);
6932         return err;
6933 }
6934
6935 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6936 {
6937         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6938         int err;
6939         struct net_device *dev = info->user_ptr[1];
6940         struct mpath_info pinfo;
6941         struct sk_buff *msg;
6942         u8 *dst = NULL;
6943         u8 next_hop[ETH_ALEN];
6944
6945         memset(&pinfo, 0, sizeof(pinfo));
6946
6947         if (!info->attrs[NL80211_ATTR_MAC])
6948                 return -EINVAL;
6949
6950         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6951
6952         if (!rdev->ops->get_mpath)
6953                 return -EOPNOTSUPP;
6954
6955         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6956                 return -EOPNOTSUPP;
6957
6958         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6959         if (err)
6960                 return err;
6961
6962         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6963         if (!msg)
6964                 return -ENOMEM;
6965
6966         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6967                                  dev, dst, next_hop, &pinfo) < 0) {
6968                 nlmsg_free(msg);
6969                 return -ENOBUFS;
6970         }
6971
6972         return genlmsg_reply(msg, info);
6973 }
6974
6975 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6976 {
6977         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6978         struct net_device *dev = info->user_ptr[1];
6979         u8 *dst = NULL;
6980         u8 *next_hop = NULL;
6981
6982         if (!info->attrs[NL80211_ATTR_MAC])
6983                 return -EINVAL;
6984
6985         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6986                 return -EINVAL;
6987
6988         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6989         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6990
6991         if (!rdev->ops->change_mpath)
6992                 return -EOPNOTSUPP;
6993
6994         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6995                 return -EOPNOTSUPP;
6996
6997         return rdev_change_mpath(rdev, dev, dst, next_hop);
6998 }
6999
7000 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
7001 {
7002         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7003         struct net_device *dev = info->user_ptr[1];
7004         u8 *dst = NULL;
7005         u8 *next_hop = NULL;
7006
7007         if (!info->attrs[NL80211_ATTR_MAC])
7008                 return -EINVAL;
7009
7010         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7011                 return -EINVAL;
7012
7013         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7014         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7015
7016         if (!rdev->ops->add_mpath)
7017                 return -EOPNOTSUPP;
7018
7019         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7020                 return -EOPNOTSUPP;
7021
7022         return rdev_add_mpath(rdev, dev, dst, next_hop);
7023 }
7024
7025 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7026 {
7027         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7028         struct net_device *dev = info->user_ptr[1];
7029         u8 *dst = NULL;
7030
7031         if (info->attrs[NL80211_ATTR_MAC])
7032                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7033
7034         if (!rdev->ops->del_mpath)
7035                 return -EOPNOTSUPP;
7036
7037         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7038                 return -EOPNOTSUPP;
7039
7040         return rdev_del_mpath(rdev, dev, dst);
7041 }
7042
7043 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7044 {
7045         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7046         int err;
7047         struct net_device *dev = info->user_ptr[1];
7048         struct mpath_info pinfo;
7049         struct sk_buff *msg;
7050         u8 *dst = NULL;
7051         u8 mpp[ETH_ALEN];
7052
7053         memset(&pinfo, 0, sizeof(pinfo));
7054
7055         if (!info->attrs[NL80211_ATTR_MAC])
7056                 return -EINVAL;
7057
7058         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7059
7060         if (!rdev->ops->get_mpp)
7061                 return -EOPNOTSUPP;
7062
7063         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7064                 return -EOPNOTSUPP;
7065
7066         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7067         if (err)
7068                 return err;
7069
7070         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7071         if (!msg)
7072                 return -ENOMEM;
7073
7074         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7075                                dev, dst, mpp, &pinfo) < 0) {
7076                 nlmsg_free(msg);
7077                 return -ENOBUFS;
7078         }
7079
7080         return genlmsg_reply(msg, info);
7081 }
7082
7083 static int nl80211_dump_mpp(struct sk_buff *skb,
7084                             struct netlink_callback *cb)
7085 {
7086         struct mpath_info pinfo;
7087         struct cfg80211_registered_device *rdev;
7088         struct wireless_dev *wdev;
7089         u8 dst[ETH_ALEN];
7090         u8 mpp[ETH_ALEN];
7091         int path_idx = cb->args[2];
7092         int err;
7093
7094         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
7095         if (err)
7096                 return err;
7097         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7098         __acquire(&rdev->wiphy.mtx);
7099
7100         if (!rdev->ops->dump_mpp) {
7101                 err = -EOPNOTSUPP;
7102                 goto out_err;
7103         }
7104
7105         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7106                 err = -EOPNOTSUPP;
7107                 goto out_err;
7108         }
7109
7110         while (1) {
7111                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7112                                     mpp, &pinfo);
7113                 if (err == -ENOENT)
7114                         break;
7115                 if (err)
7116                         goto out_err;
7117
7118                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7119                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7120                                        wdev->netdev, dst, mpp,
7121                                        &pinfo) < 0)
7122                         goto out;
7123
7124                 path_idx++;
7125         }
7126
7127  out:
7128         cb->args[2] = path_idx;
7129         err = skb->len;
7130  out_err:
7131         wiphy_unlock(&rdev->wiphy);
7132         return err;
7133 }
7134
7135 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7136 {
7137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7138         struct net_device *dev = info->user_ptr[1];
7139         struct wireless_dev *wdev = dev->ieee80211_ptr;
7140         struct bss_parameters params;
7141         int err;
7142
7143         memset(&params, 0, sizeof(params));
7144         /* default to not changing parameters */
7145         params.use_cts_prot = -1;
7146         params.use_short_preamble = -1;
7147         params.use_short_slot_time = -1;
7148         params.ap_isolate = -1;
7149         params.ht_opmode = -1;
7150         params.p2p_ctwindow = -1;
7151         params.p2p_opp_ps = -1;
7152
7153         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7154                 params.use_cts_prot =
7155                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7156         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7157                 params.use_short_preamble =
7158                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7159         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7160                 params.use_short_slot_time =
7161                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7162         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7163                 params.basic_rates =
7164                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7165                 params.basic_rates_len =
7166                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7167         }
7168         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7169                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7170         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7171                 params.ht_opmode =
7172                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7173
7174         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7175                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7176                         return -EINVAL;
7177                 params.p2p_ctwindow =
7178                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7179                 if (params.p2p_ctwindow != 0 &&
7180                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7181                         return -EINVAL;
7182         }
7183
7184         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7185                 u8 tmp;
7186
7187                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7188                         return -EINVAL;
7189                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7190                 params.p2p_opp_ps = tmp;
7191                 if (params.p2p_opp_ps &&
7192                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7193                         return -EINVAL;
7194         }
7195
7196         if (!rdev->ops->change_bss)
7197                 return -EOPNOTSUPP;
7198
7199         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7200             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7201                 return -EOPNOTSUPP;
7202
7203         wdev_lock(wdev);
7204         err = rdev_change_bss(rdev, dev, &params);
7205         wdev_unlock(wdev);
7206
7207         return err;
7208 }
7209
7210 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7211 {
7212         char *data = NULL;
7213         bool is_indoor;
7214         enum nl80211_user_reg_hint_type user_reg_hint_type;
7215         u32 owner_nlportid;
7216
7217         /*
7218          * You should only get this when cfg80211 hasn't yet initialized
7219          * completely when built-in to the kernel right between the time
7220          * window between nl80211_init() and regulatory_init(), if that is
7221          * even possible.
7222          */
7223         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7224                 return -EINPROGRESS;
7225
7226         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7227                 user_reg_hint_type =
7228                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7229         else
7230                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7231
7232         switch (user_reg_hint_type) {
7233         case NL80211_USER_REG_HINT_USER:
7234         case NL80211_USER_REG_HINT_CELL_BASE:
7235                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7236                         return -EINVAL;
7237
7238                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7239                 return regulatory_hint_user(data, user_reg_hint_type);
7240         case NL80211_USER_REG_HINT_INDOOR:
7241                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7242                         owner_nlportid = info->snd_portid;
7243                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7244                 } else {
7245                         owner_nlportid = 0;
7246                         is_indoor = true;
7247                 }
7248
7249                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7250         default:
7251                 return -EINVAL;
7252         }
7253 }
7254
7255 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7256 {
7257         return reg_reload_regdb();
7258 }
7259
7260 static int nl80211_get_mesh_config(struct sk_buff *skb,
7261                                    struct genl_info *info)
7262 {
7263         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7264         struct net_device *dev = info->user_ptr[1];
7265         struct wireless_dev *wdev = dev->ieee80211_ptr;
7266         struct mesh_config cur_params;
7267         int err = 0;
7268         void *hdr;
7269         struct nlattr *pinfoattr;
7270         struct sk_buff *msg;
7271
7272         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7273                 return -EOPNOTSUPP;
7274
7275         if (!rdev->ops->get_mesh_config)
7276                 return -EOPNOTSUPP;
7277
7278         wdev_lock(wdev);
7279         /* If not connected, get default parameters */
7280         if (!wdev->mesh_id_len)
7281                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7282         else
7283                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7284         wdev_unlock(wdev);
7285
7286         if (err)
7287                 return err;
7288
7289         /* Draw up a netlink message to send back */
7290         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7291         if (!msg)
7292                 return -ENOMEM;
7293         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7294                              NL80211_CMD_GET_MESH_CONFIG);
7295         if (!hdr)
7296                 goto out;
7297         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7298         if (!pinfoattr)
7299                 goto nla_put_failure;
7300         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7301             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7302                         cur_params.dot11MeshRetryTimeout) ||
7303             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7304                         cur_params.dot11MeshConfirmTimeout) ||
7305             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7306                         cur_params.dot11MeshHoldingTimeout) ||
7307             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7308                         cur_params.dot11MeshMaxPeerLinks) ||
7309             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7310                        cur_params.dot11MeshMaxRetries) ||
7311             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7312                        cur_params.dot11MeshTTL) ||
7313             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7314                        cur_params.element_ttl) ||
7315             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7316                        cur_params.auto_open_plinks) ||
7317             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7318                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7319             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7320                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7321             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7322                         cur_params.path_refresh_time) ||
7323             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7324                         cur_params.min_discovery_timeout) ||
7325             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7326                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7327             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7328                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7329             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7330                         cur_params.dot11MeshHWMPperrMinInterval) ||
7331             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7332                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7333             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7334                        cur_params.dot11MeshHWMPRootMode) ||
7335             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7336                         cur_params.dot11MeshHWMPRannInterval) ||
7337             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7338                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7339             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7340                        cur_params.dot11MeshForwarding) ||
7341             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7342                         cur_params.rssi_threshold) ||
7343             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7344                         cur_params.ht_opmode) ||
7345             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7346                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7347             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7348                         cur_params.dot11MeshHWMProotInterval) ||
7349             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7350                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7351             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7352                         cur_params.power_mode) ||
7353             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7354                         cur_params.dot11MeshAwakeWindowDuration) ||
7355             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7356                         cur_params.plink_timeout) ||
7357             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7358                        cur_params.dot11MeshConnectedToMeshGate) ||
7359             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7360                        cur_params.dot11MeshNolearn) ||
7361             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7362                        cur_params.dot11MeshConnectedToAuthServer))
7363                 goto nla_put_failure;
7364         nla_nest_end(msg, pinfoattr);
7365         genlmsg_end(msg, hdr);
7366         return genlmsg_reply(msg, info);
7367
7368  nla_put_failure:
7369  out:
7370         nlmsg_free(msg);
7371         return -ENOBUFS;
7372 }
7373
7374 static const struct nla_policy
7375 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7376         [NL80211_MESHCONF_RETRY_TIMEOUT] =
7377                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7378         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7379                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7380         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7381                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7382         [NL80211_MESHCONF_MAX_PEER_LINKS] =
7383                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7384         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7385         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7386         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7387         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7388         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7389                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7390         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7391         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7392         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7393         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7394         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7395                 NLA_POLICY_MIN(NLA_U16, 1),
7396         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7397                 NLA_POLICY_MIN(NLA_U16, 1),
7398         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7399                 NLA_POLICY_MIN(NLA_U16, 1),
7400         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7401         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7402                 NLA_POLICY_MIN(NLA_U16, 1),
7403         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7404         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7405         [NL80211_MESHCONF_RSSI_THRESHOLD] =
7406                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7407         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7408         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7409         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7410                 NLA_POLICY_MIN(NLA_U16, 1),
7411         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7412                 NLA_POLICY_MIN(NLA_U16, 1),
7413         [NL80211_MESHCONF_POWER_MODE] =
7414                 NLA_POLICY_RANGE(NLA_U32,
7415                                  NL80211_MESH_POWER_ACTIVE,
7416                                  NL80211_MESH_POWER_MAX),
7417         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7418         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7419         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7420         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7421         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7422 };
7423
7424 static const struct nla_policy
7425         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7426         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7427         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7428         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7429         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7430         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7431         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7432         [NL80211_MESH_SETUP_IE] =
7433                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7434                                        IEEE80211_MAX_DATA_LEN),
7435         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7436 };
7437
7438 static int nl80211_parse_mesh_config(struct genl_info *info,
7439                                      struct mesh_config *cfg,
7440                                      u32 *mask_out)
7441 {
7442         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7443         u32 mask = 0;
7444         u16 ht_opmode;
7445
7446 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
7447 do {                                                                    \
7448         if (tb[attr]) {                                                 \
7449                 cfg->param = fn(tb[attr]);                              \
7450                 mask |= BIT((attr) - 1);                                \
7451         }                                                               \
7452 } while (0)
7453
7454         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7455                 return -EINVAL;
7456         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7457                 return -EINVAL;
7458
7459         /* This makes sure that there aren't more than 32 mesh config
7460          * parameters (otherwise our bitfield scheme would not work.) */
7461         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7462
7463         /* Fill in the params struct */
7464         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7465                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7466         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7467                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
7468                                   nla_get_u16);
7469         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7470                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7471                                   nla_get_u16);
7472         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7473                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7474                                   nla_get_u16);
7475         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7476                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7477         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7478                                   NL80211_MESHCONF_TTL, nla_get_u8);
7479         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7480                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7481         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7482                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7483                                   nla_get_u8);
7484         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7485                                   mask,
7486                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7487                                   nla_get_u32);
7488         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7489                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7490                                   nla_get_u8);
7491         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7492                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7493                                   nla_get_u32);
7494         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7495             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7496                 return -EINVAL;
7497         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7498                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7499                                   nla_get_u16);
7500         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7501                                   mask,
7502                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7503                                   nla_get_u32);
7504         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7505             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7506              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7507                 return -EINVAL;
7508         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7509                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7510                                   nla_get_u16);
7511         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7512                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7513                                   nla_get_u16);
7514         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7515                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7516                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7517                                   nla_get_u16);
7518         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7519                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7520         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7521                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7522                                   nla_get_u16);
7523         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7524                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7525                                   nla_get_u8);
7526         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7527                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7528         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7529                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7530                                   nla_get_s32);
7531         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7532                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7533                                   nla_get_u8);
7534         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7535                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7536                                   nla_get_u8);
7537         /*
7538          * Check HT operation mode based on
7539          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7540          */
7541         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7542                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7543
7544                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7545                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7546                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7547                         return -EINVAL;
7548
7549                 /* NON_HT_STA bit is reserved, but some programs set it */
7550                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7551
7552                 cfg->ht_opmode = ht_opmode;
7553                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7554         }
7555         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7556                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7557                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7558                                   nla_get_u32);
7559         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7560             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7561              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7562                 return -EINVAL;
7563         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7564                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7565                                   nla_get_u16);
7566         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7567                                   mask,
7568                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7569                                   nla_get_u16);
7570         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7571                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7572         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7573                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7574         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7575                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7576         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7577                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7578         if (mask_out)
7579                 *mask_out = mask;
7580
7581         return 0;
7582
7583 #undef FILL_IN_MESH_PARAM_IF_SET
7584 }
7585
7586 static int nl80211_parse_mesh_setup(struct genl_info *info,
7587                                      struct mesh_setup *setup)
7588 {
7589         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7590         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7591
7592         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7593                 return -EINVAL;
7594         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7595                 return -EINVAL;
7596
7597         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7598                 setup->sync_method =
7599                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7600                  IEEE80211_SYNC_METHOD_VENDOR :
7601                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7602
7603         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7604                 setup->path_sel_proto =
7605                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7606                  IEEE80211_PATH_PROTOCOL_VENDOR :
7607                  IEEE80211_PATH_PROTOCOL_HWMP;
7608
7609         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7610                 setup->path_metric =
7611                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7612                  IEEE80211_PATH_METRIC_VENDOR :
7613                  IEEE80211_PATH_METRIC_AIRTIME;
7614
7615         if (tb[NL80211_MESH_SETUP_IE]) {
7616                 struct nlattr *ieattr =
7617                         tb[NL80211_MESH_SETUP_IE];
7618                 setup->ie = nla_data(ieattr);
7619                 setup->ie_len = nla_len(ieattr);
7620         }
7621         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7622             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7623                 return -EINVAL;
7624         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7625         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7626         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7627         if (setup->is_secure)
7628                 setup->user_mpm = true;
7629
7630         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7631                 if (!setup->user_mpm)
7632                         return -EINVAL;
7633                 setup->auth_id =
7634                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7635         }
7636
7637         return 0;
7638 }
7639
7640 static int nl80211_update_mesh_config(struct sk_buff *skb,
7641                                       struct genl_info *info)
7642 {
7643         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7644         struct net_device *dev = info->user_ptr[1];
7645         struct wireless_dev *wdev = dev->ieee80211_ptr;
7646         struct mesh_config cfg;
7647         u32 mask;
7648         int err;
7649
7650         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7651                 return -EOPNOTSUPP;
7652
7653         if (!rdev->ops->update_mesh_config)
7654                 return -EOPNOTSUPP;
7655
7656         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7657         if (err)
7658                 return err;
7659
7660         wdev_lock(wdev);
7661         if (!wdev->mesh_id_len)
7662                 err = -ENOLINK;
7663
7664         if (!err)
7665                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7666
7667         wdev_unlock(wdev);
7668
7669         return err;
7670 }
7671
7672 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7673                               struct sk_buff *msg)
7674 {
7675         struct nlattr *nl_reg_rules;
7676         unsigned int i;
7677
7678         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7679             (regdom->dfs_region &&
7680              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7681                 goto nla_put_failure;
7682
7683         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7684         if (!nl_reg_rules)
7685                 goto nla_put_failure;
7686
7687         for (i = 0; i < regdom->n_reg_rules; i++) {
7688                 struct nlattr *nl_reg_rule;
7689                 const struct ieee80211_reg_rule *reg_rule;
7690                 const struct ieee80211_freq_range *freq_range;
7691                 const struct ieee80211_power_rule *power_rule;
7692                 unsigned int max_bandwidth_khz;
7693
7694                 reg_rule = &regdom->reg_rules[i];
7695                 freq_range = &reg_rule->freq_range;
7696                 power_rule = &reg_rule->power_rule;
7697
7698                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7699                 if (!nl_reg_rule)
7700                         goto nla_put_failure;
7701
7702                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7703                 if (!max_bandwidth_khz)
7704                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7705                                                                   reg_rule);
7706
7707                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7708                                 reg_rule->flags) ||
7709                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7710                                 freq_range->start_freq_khz) ||
7711                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7712                                 freq_range->end_freq_khz) ||
7713                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7714                                 max_bandwidth_khz) ||
7715                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7716                                 power_rule->max_antenna_gain) ||
7717                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7718                                 power_rule->max_eirp) ||
7719                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7720                                 reg_rule->dfs_cac_ms))
7721                         goto nla_put_failure;
7722
7723                 nla_nest_end(msg, nl_reg_rule);
7724         }
7725
7726         nla_nest_end(msg, nl_reg_rules);
7727         return 0;
7728
7729 nla_put_failure:
7730         return -EMSGSIZE;
7731 }
7732
7733 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7734 {
7735         const struct ieee80211_regdomain *regdom = NULL;
7736         struct cfg80211_registered_device *rdev;
7737         struct wiphy *wiphy = NULL;
7738         struct sk_buff *msg;
7739         void *hdr;
7740
7741         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7742         if (!msg)
7743                 return -ENOBUFS;
7744
7745         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7746                              NL80211_CMD_GET_REG);
7747         if (!hdr)
7748                 goto put_failure;
7749
7750         rtnl_lock();
7751
7752         if (info->attrs[NL80211_ATTR_WIPHY]) {
7753                 bool self_managed;
7754
7755                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7756                 if (IS_ERR(rdev)) {
7757                         nlmsg_free(msg);
7758                         rtnl_unlock();
7759                         return PTR_ERR(rdev);
7760                 }
7761
7762                 wiphy = &rdev->wiphy;
7763                 self_managed = wiphy->regulatory_flags &
7764                                REGULATORY_WIPHY_SELF_MANAGED;
7765                 regdom = get_wiphy_regdom(wiphy);
7766
7767                 /* a self-managed-reg device must have a private regdom */
7768                 if (WARN_ON(!regdom && self_managed)) {
7769                         nlmsg_free(msg);
7770                         rtnl_unlock();
7771                         return -EINVAL;
7772                 }
7773
7774                 if (regdom &&
7775                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7776                         goto nla_put_failure;
7777         }
7778
7779         if (!wiphy && reg_last_request_cell_base() &&
7780             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7781                         NL80211_USER_REG_HINT_CELL_BASE))
7782                 goto nla_put_failure;
7783
7784         rcu_read_lock();
7785
7786         if (!regdom)
7787                 regdom = rcu_dereference(cfg80211_regdomain);
7788
7789         if (nl80211_put_regdom(regdom, msg))
7790                 goto nla_put_failure_rcu;
7791
7792         rcu_read_unlock();
7793
7794         genlmsg_end(msg, hdr);
7795         rtnl_unlock();
7796         return genlmsg_reply(msg, info);
7797
7798 nla_put_failure_rcu:
7799         rcu_read_unlock();
7800 nla_put_failure:
7801         rtnl_unlock();
7802 put_failure:
7803         nlmsg_free(msg);
7804         return -EMSGSIZE;
7805 }
7806
7807 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7808                                u32 seq, int flags, struct wiphy *wiphy,
7809                                const struct ieee80211_regdomain *regdom)
7810 {
7811         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7812                                    NL80211_CMD_GET_REG);
7813
7814         if (!hdr)
7815                 return -1;
7816
7817         genl_dump_check_consistent(cb, hdr);
7818
7819         if (nl80211_put_regdom(regdom, msg))
7820                 goto nla_put_failure;
7821
7822         if (!wiphy && reg_last_request_cell_base() &&
7823             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7824                         NL80211_USER_REG_HINT_CELL_BASE))
7825                 goto nla_put_failure;
7826
7827         if (wiphy &&
7828             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7829                 goto nla_put_failure;
7830
7831         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7832             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7833                 goto nla_put_failure;
7834
7835         genlmsg_end(msg, hdr);
7836         return 0;
7837
7838 nla_put_failure:
7839         genlmsg_cancel(msg, hdr);
7840         return -EMSGSIZE;
7841 }
7842
7843 static int nl80211_get_reg_dump(struct sk_buff *skb,
7844                                 struct netlink_callback *cb)
7845 {
7846         const struct ieee80211_regdomain *regdom = NULL;
7847         struct cfg80211_registered_device *rdev;
7848         int err, reg_idx, start = cb->args[2];
7849
7850         rtnl_lock();
7851
7852         if (cfg80211_regdomain && start == 0) {
7853                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7854                                           NLM_F_MULTI, NULL,
7855                                           rtnl_dereference(cfg80211_regdomain));
7856                 if (err < 0)
7857                         goto out_err;
7858         }
7859
7860         /* the global regdom is idx 0 */
7861         reg_idx = 1;
7862         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7863                 regdom = get_wiphy_regdom(&rdev->wiphy);
7864                 if (!regdom)
7865                         continue;
7866
7867                 if (++reg_idx <= start)
7868                         continue;
7869
7870                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7871                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7872                 if (err < 0) {
7873                         reg_idx--;
7874                         break;
7875                 }
7876         }
7877
7878         cb->args[2] = reg_idx;
7879         err = skb->len;
7880 out_err:
7881         rtnl_unlock();
7882         return err;
7883 }
7884
7885 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7886 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7887         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7888         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7889         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7890         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7891         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7892         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7893         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7894 };
7895
7896 static int parse_reg_rule(struct nlattr *tb[],
7897         struct ieee80211_reg_rule *reg_rule)
7898 {
7899         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7900         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7901
7902         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7903                 return -EINVAL;
7904         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7905                 return -EINVAL;
7906         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7907                 return -EINVAL;
7908         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7909                 return -EINVAL;
7910         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7911                 return -EINVAL;
7912
7913         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7914
7915         freq_range->start_freq_khz =
7916                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7917         freq_range->end_freq_khz =
7918                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7919         freq_range->max_bandwidth_khz =
7920                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7921
7922         power_rule->max_eirp =
7923                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7924
7925         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7926                 power_rule->max_antenna_gain =
7927                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7928
7929         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7930                 reg_rule->dfs_cac_ms =
7931                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7932
7933         return 0;
7934 }
7935
7936 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7937 {
7938         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7939         struct nlattr *nl_reg_rule;
7940         char *alpha2;
7941         int rem_reg_rules, r;
7942         u32 num_rules = 0, rule_idx = 0;
7943         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7944         struct ieee80211_regdomain *rd;
7945
7946         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7947                 return -EINVAL;
7948
7949         if (!info->attrs[NL80211_ATTR_REG_RULES])
7950                 return -EINVAL;
7951
7952         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7953
7954         if (info->attrs[NL80211_ATTR_DFS_REGION])
7955                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7956
7957         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7958                             rem_reg_rules) {
7959                 num_rules++;
7960                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7961                         return -EINVAL;
7962         }
7963
7964         rtnl_lock();
7965         if (!reg_is_valid_request(alpha2)) {
7966                 r = -EINVAL;
7967                 goto out;
7968         }
7969
7970         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7971         if (!rd) {
7972                 r = -ENOMEM;
7973                 goto out;
7974         }
7975
7976         rd->n_reg_rules = num_rules;
7977         rd->alpha2[0] = alpha2[0];
7978         rd->alpha2[1] = alpha2[1];
7979
7980         /*
7981          * Disable DFS master mode if the DFS region was
7982          * not supported or known on this kernel.
7983          */
7984         if (reg_supported_dfs_region(dfs_region))
7985                 rd->dfs_region = dfs_region;
7986
7987         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7988                             rem_reg_rules) {
7989                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7990                                                 nl_reg_rule, reg_rule_policy,
7991                                                 info->extack);
7992                 if (r)
7993                         goto bad_reg;
7994                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7995                 if (r)
7996                         goto bad_reg;
7997
7998                 rule_idx++;
7999
8000                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
8001                         r = -EINVAL;
8002                         goto bad_reg;
8003                 }
8004         }
8005
8006         r = set_regdom(rd, REGD_SOURCE_CRDA);
8007         /* set_regdom takes ownership of rd */
8008         rd = NULL;
8009  bad_reg:
8010         kfree(rd);
8011  out:
8012         rtnl_unlock();
8013         return r;
8014 }
8015 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8016
8017 static int validate_scan_freqs(struct nlattr *freqs)
8018 {
8019         struct nlattr *attr1, *attr2;
8020         int n_channels = 0, tmp1, tmp2;
8021
8022         nla_for_each_nested(attr1, freqs, tmp1)
8023                 if (nla_len(attr1) != sizeof(u32))
8024                         return 0;
8025
8026         nla_for_each_nested(attr1, freqs, tmp1) {
8027                 n_channels++;
8028                 /*
8029                  * Some hardware has a limited channel list for
8030                  * scanning, and it is pretty much nonsensical
8031                  * to scan for a channel twice, so disallow that
8032                  * and don't require drivers to check that the
8033                  * channel list they get isn't longer than what
8034                  * they can scan, as long as they can scan all
8035                  * the channels they registered at once.
8036                  */
8037                 nla_for_each_nested(attr2, freqs, tmp2)
8038                         if (attr1 != attr2 &&
8039                             nla_get_u32(attr1) == nla_get_u32(attr2))
8040                                 return 0;
8041         }
8042
8043         return n_channels;
8044 }
8045
8046 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8047 {
8048         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8049 }
8050
8051 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8052                             struct cfg80211_bss_selection *bss_select)
8053 {
8054         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8055         struct nlattr *nest;
8056         int err;
8057         bool found = false;
8058         int i;
8059
8060         /* only process one nested attribute */
8061         nest = nla_data(nla);
8062         if (!nla_ok(nest, nla_len(nest)))
8063                 return -EINVAL;
8064
8065         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8066                                           nest, nl80211_bss_select_policy,
8067                                           NULL);
8068         if (err)
8069                 return err;
8070
8071         /* only one attribute may be given */
8072         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8073                 if (attr[i]) {
8074                         if (found)
8075                                 return -EINVAL;
8076                         found = true;
8077                 }
8078         }
8079
8080         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8081
8082         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8083                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8084
8085         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8086                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8087                 bss_select->param.band_pref =
8088                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8089                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8090                         return -EINVAL;
8091         }
8092
8093         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8094                 struct nl80211_bss_select_rssi_adjust *adj_param;
8095
8096                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8097                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8098                 bss_select->param.adjust.band = adj_param->band;
8099                 bss_select->param.adjust.delta = adj_param->delta;
8100                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8101                         return -EINVAL;
8102         }
8103
8104         /* user-space did not provide behaviour attribute */
8105         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8106                 return -EINVAL;
8107
8108         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8109                 return -EINVAL;
8110
8111         return 0;
8112 }
8113
8114 int nl80211_parse_random_mac(struct nlattr **attrs,
8115                              u8 *mac_addr, u8 *mac_addr_mask)
8116 {
8117         int i;
8118
8119         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8120                 eth_zero_addr(mac_addr);
8121                 eth_zero_addr(mac_addr_mask);
8122                 mac_addr[0] = 0x2;
8123                 mac_addr_mask[0] = 0x3;
8124
8125                 return 0;
8126         }
8127
8128         /* need both or none */
8129         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8130                 return -EINVAL;
8131
8132         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8133         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8134
8135         /* don't allow or configure an mcast address */
8136         if (!is_multicast_ether_addr(mac_addr_mask) ||
8137             is_multicast_ether_addr(mac_addr))
8138                 return -EINVAL;
8139
8140         /*
8141          * allow users to pass a MAC address that has bits set outside
8142          * of the mask, but don't bother drivers with having to deal
8143          * with such bits
8144          */
8145         for (i = 0; i < ETH_ALEN; i++)
8146                 mac_addr[i] &= mac_addr_mask[i];
8147
8148         return 0;
8149 }
8150
8151 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
8152 {
8153         ASSERT_WDEV_LOCK(wdev);
8154
8155         if (!cfg80211_beaconing_iface_active(wdev))
8156                 return true;
8157
8158         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
8159                 return true;
8160
8161         return regulatory_pre_cac_allowed(wdev->wiphy);
8162 }
8163
8164 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8165                                     enum nl80211_ext_feature_index feat)
8166 {
8167         if (!(flags & flag))
8168                 return true;
8169         if (wiphy_ext_feature_isset(wiphy, feat))
8170                 return true;
8171         return false;
8172 }
8173
8174 static int
8175 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8176                          void *request, struct nlattr **attrs,
8177                          bool is_sched_scan)
8178 {
8179         u8 *mac_addr, *mac_addr_mask;
8180         u32 *flags;
8181         enum nl80211_feature_flags randomness_flag;
8182
8183         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8184                 return 0;
8185
8186         if (is_sched_scan) {
8187                 struct cfg80211_sched_scan_request *req = request;
8188
8189                 randomness_flag = wdev ?
8190                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8191                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8192                 flags = &req->flags;
8193                 mac_addr = req->mac_addr;
8194                 mac_addr_mask = req->mac_addr_mask;
8195         } else {
8196                 struct cfg80211_scan_request *req = request;
8197
8198                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8199                 flags = &req->flags;
8200                 mac_addr = req->mac_addr;
8201                 mac_addr_mask = req->mac_addr_mask;
8202         }
8203
8204         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8205
8206         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8207              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8208             !nl80211_check_scan_feat(wiphy, *flags,
8209                                      NL80211_SCAN_FLAG_LOW_SPAN,
8210                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8211             !nl80211_check_scan_feat(wiphy, *flags,
8212                                      NL80211_SCAN_FLAG_LOW_POWER,
8213                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8214             !nl80211_check_scan_feat(wiphy, *flags,
8215                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8216                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8217             !nl80211_check_scan_feat(wiphy, *flags,
8218                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8219                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8220             !nl80211_check_scan_feat(wiphy, *flags,
8221                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8222                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8223             !nl80211_check_scan_feat(wiphy, *flags,
8224                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8225                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8226             !nl80211_check_scan_feat(wiphy, *flags,
8227                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8228                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8229             !nl80211_check_scan_feat(wiphy, *flags,
8230                                      NL80211_SCAN_FLAG_RANDOM_SN,
8231                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8232             !nl80211_check_scan_feat(wiphy, *flags,
8233                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8234                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8235                 return -EOPNOTSUPP;
8236
8237         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8238                 int err;
8239
8240                 if (!(wiphy->features & randomness_flag) ||
8241                     (wdev && wdev->current_bss))
8242                         return -EOPNOTSUPP;
8243
8244                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8245                 if (err)
8246                         return err;
8247         }
8248
8249         return 0;
8250 }
8251
8252 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8253 {
8254         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8255         struct wireless_dev *wdev = info->user_ptr[1];
8256         struct cfg80211_scan_request *request;
8257         struct nlattr *scan_freqs = NULL;
8258         bool scan_freqs_khz = false;
8259         struct nlattr *attr;
8260         struct wiphy *wiphy;
8261         int err, tmp, n_ssids = 0, n_channels, i;
8262         size_t ie_len;
8263
8264         wiphy = &rdev->wiphy;
8265
8266         if (wdev->iftype == NL80211_IFTYPE_NAN)
8267                 return -EOPNOTSUPP;
8268
8269         if (!rdev->ops->scan)
8270                 return -EOPNOTSUPP;
8271
8272         if (rdev->scan_req || rdev->scan_msg)
8273                 return -EBUSY;
8274
8275         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8276                 if (!wiphy_ext_feature_isset(wiphy,
8277                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8278                         return -EOPNOTSUPP;
8279                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8280                 scan_freqs_khz = true;
8281         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8282                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8283
8284         if (scan_freqs) {
8285                 n_channels = validate_scan_freqs(scan_freqs);
8286                 if (!n_channels)
8287                         return -EINVAL;
8288         } else {
8289                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8290         }
8291
8292         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8293                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8294                         n_ssids++;
8295
8296         if (n_ssids > wiphy->max_scan_ssids)
8297                 return -EINVAL;
8298
8299         if (info->attrs[NL80211_ATTR_IE])
8300                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8301         else
8302                 ie_len = 0;
8303
8304         if (ie_len > wiphy->max_scan_ie_len)
8305                 return -EINVAL;
8306
8307         request = kzalloc(sizeof(*request)
8308                         + sizeof(*request->ssids) * n_ssids
8309                         + sizeof(*request->channels) * n_channels
8310                         + ie_len, GFP_KERNEL);
8311         if (!request)
8312                 return -ENOMEM;
8313
8314         if (n_ssids)
8315                 request->ssids = (void *)&request->channels[n_channels];
8316         request->n_ssids = n_ssids;
8317         if (ie_len) {
8318                 if (n_ssids)
8319                         request->ie = (void *)(request->ssids + n_ssids);
8320                 else
8321                         request->ie = (void *)(request->channels + n_channels);
8322         }
8323
8324         i = 0;
8325         if (scan_freqs) {
8326                 /* user specified, bail out if channel not found */
8327                 nla_for_each_nested(attr, scan_freqs, tmp) {
8328                         struct ieee80211_channel *chan;
8329                         int freq = nla_get_u32(attr);
8330
8331                         if (!scan_freqs_khz)
8332                                 freq = MHZ_TO_KHZ(freq);
8333
8334                         chan = ieee80211_get_channel_khz(wiphy, freq);
8335                         if (!chan) {
8336                                 err = -EINVAL;
8337                                 goto out_free;
8338                         }
8339
8340                         /* ignore disabled channels */
8341                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8342                                 continue;
8343
8344                         request->channels[i] = chan;
8345                         i++;
8346                 }
8347         } else {
8348                 enum nl80211_band band;
8349
8350                 /* all channels */
8351                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8352                         int j;
8353
8354                         if (!wiphy->bands[band])
8355                                 continue;
8356                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8357                                 struct ieee80211_channel *chan;
8358
8359                                 chan = &wiphy->bands[band]->channels[j];
8360
8361                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8362                                         continue;
8363
8364                                 request->channels[i] = chan;
8365                                 i++;
8366                         }
8367                 }
8368         }
8369
8370         if (!i) {
8371                 err = -EINVAL;
8372                 goto out_free;
8373         }
8374
8375         request->n_channels = i;
8376
8377         wdev_lock(wdev);
8378         if (!cfg80211_off_channel_oper_allowed(wdev)) {
8379                 struct ieee80211_channel *chan;
8380
8381                 if (request->n_channels != 1) {
8382                         wdev_unlock(wdev);
8383                         err = -EBUSY;
8384                         goto out_free;
8385                 }
8386
8387                 chan = request->channels[0];
8388                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8389                         wdev_unlock(wdev);
8390                         err = -EBUSY;
8391                         goto out_free;
8392                 }
8393         }
8394         wdev_unlock(wdev);
8395
8396         i = 0;
8397         if (n_ssids) {
8398                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8399                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8400                                 err = -EINVAL;
8401                                 goto out_free;
8402                         }
8403                         request->ssids[i].ssid_len = nla_len(attr);
8404                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8405                         i++;
8406                 }
8407         }
8408
8409         if (info->attrs[NL80211_ATTR_IE]) {
8410                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8411                 memcpy((void *)request->ie,
8412                        nla_data(info->attrs[NL80211_ATTR_IE]),
8413                        request->ie_len);
8414         }
8415
8416         for (i = 0; i < NUM_NL80211_BANDS; i++)
8417                 if (wiphy->bands[i])
8418                         request->rates[i] =
8419                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
8420
8421         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8422                 nla_for_each_nested(attr,
8423                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8424                                     tmp) {
8425                         enum nl80211_band band = nla_type(attr);
8426
8427                         if (band < 0 || band >= NUM_NL80211_BANDS) {
8428                                 err = -EINVAL;
8429                                 goto out_free;
8430                         }
8431
8432                         if (!wiphy->bands[band])
8433                                 continue;
8434
8435                         err = ieee80211_get_ratemask(wiphy->bands[band],
8436                                                      nla_data(attr),
8437                                                      nla_len(attr),
8438                                                      &request->rates[band]);
8439                         if (err)
8440                                 goto out_free;
8441                 }
8442         }
8443
8444         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8445                 request->duration =
8446                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8447                 request->duration_mandatory =
8448                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8449         }
8450
8451         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8452                                        false);
8453         if (err)
8454                 goto out_free;
8455
8456         request->no_cck =
8457                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8458
8459         /* Initial implementation used NL80211_ATTR_MAC to set the specific
8460          * BSSID to scan for. This was problematic because that same attribute
8461          * was already used for another purpose (local random MAC address). The
8462          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8463          * compatibility with older userspace components, also use the
8464          * NL80211_ATTR_MAC value here if it can be determined to be used for
8465          * the specific BSSID use case instead of the random MAC address
8466          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8467          */
8468         if (info->attrs[NL80211_ATTR_BSSID])
8469                 memcpy(request->bssid,
8470                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8471         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8472                  info->attrs[NL80211_ATTR_MAC])
8473                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8474                        ETH_ALEN);
8475         else
8476                 eth_broadcast_addr(request->bssid);
8477
8478         request->wdev = wdev;
8479         request->wiphy = &rdev->wiphy;
8480         request->scan_start = jiffies;
8481
8482         rdev->scan_req = request;
8483         err = cfg80211_scan(rdev);
8484
8485         if (err)
8486                 goto out_free;
8487
8488         nl80211_send_scan_start(rdev, wdev);
8489         if (wdev->netdev)
8490                 dev_hold(wdev->netdev);
8491
8492         return 0;
8493
8494  out_free:
8495         rdev->scan_req = NULL;
8496         kfree(request);
8497
8498         return err;
8499 }
8500
8501 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8502 {
8503         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8504         struct wireless_dev *wdev = info->user_ptr[1];
8505
8506         if (!rdev->ops->abort_scan)
8507                 return -EOPNOTSUPP;
8508
8509         if (rdev->scan_msg)
8510                 return 0;
8511
8512         if (!rdev->scan_req)
8513                 return -ENOENT;
8514
8515         rdev_abort_scan(rdev, wdev);
8516         return 0;
8517 }
8518
8519 static int
8520 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8521                                struct cfg80211_sched_scan_request *request,
8522                                struct nlattr **attrs)
8523 {
8524         int tmp, err, i = 0;
8525         struct nlattr *attr;
8526
8527         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8528                 u32 interval;
8529
8530                 /*
8531                  * If scan plans are not specified,
8532                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8533                  * case one scan plan will be set with the specified scan
8534                  * interval and infinite number of iterations.
8535                  */
8536                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8537                 if (!interval)
8538                         return -EINVAL;
8539
8540                 request->scan_plans[0].interval =
8541                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8542                 if (!request->scan_plans[0].interval)
8543                         return -EINVAL;
8544
8545                 if (request->scan_plans[0].interval >
8546                     wiphy->max_sched_scan_plan_interval)
8547                         request->scan_plans[0].interval =
8548                                 wiphy->max_sched_scan_plan_interval;
8549
8550                 return 0;
8551         }
8552
8553         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8554                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8555
8556                 if (WARN_ON(i >= n_plans))
8557                         return -EINVAL;
8558
8559                 err = nla_parse_nested_deprecated(plan,
8560                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8561                                                   attr, nl80211_plan_policy,
8562                                                   NULL);
8563                 if (err)
8564                         return err;
8565
8566                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8567                         return -EINVAL;
8568
8569                 request->scan_plans[i].interval =
8570                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8571                 if (!request->scan_plans[i].interval ||
8572                     request->scan_plans[i].interval >
8573                     wiphy->max_sched_scan_plan_interval)
8574                         return -EINVAL;
8575
8576                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8577                         request->scan_plans[i].iterations =
8578                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8579                         if (!request->scan_plans[i].iterations ||
8580                             (request->scan_plans[i].iterations >
8581                              wiphy->max_sched_scan_plan_iterations))
8582                                 return -EINVAL;
8583                 } else if (i < n_plans - 1) {
8584                         /*
8585                          * All scan plans but the last one must specify
8586                          * a finite number of iterations
8587                          */
8588                         return -EINVAL;
8589                 }
8590
8591                 i++;
8592         }
8593
8594         /*
8595          * The last scan plan must not specify the number of
8596          * iterations, it is supposed to run infinitely
8597          */
8598         if (request->scan_plans[n_plans - 1].iterations)
8599                 return  -EINVAL;
8600
8601         return 0;
8602 }
8603
8604 static int
8605 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8606                                        struct cfg80211_match_set *match_sets,
8607                                        struct nlattr *tb_band_rssi,
8608                                        s32 rssi_thold)
8609 {
8610         struct nlattr *attr;
8611         int i, tmp, ret = 0;
8612
8613         if (!wiphy_ext_feature_isset(wiphy,
8614                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8615                 if (tb_band_rssi)
8616                         ret = -EOPNOTSUPP;
8617                 else
8618                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8619                                 match_sets->per_band_rssi_thold[i] =
8620                                         NL80211_SCAN_RSSI_THOLD_OFF;
8621                 return ret;
8622         }
8623
8624         for (i = 0; i < NUM_NL80211_BANDS; i++)
8625                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8626
8627         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8628                 enum nl80211_band band = nla_type(attr);
8629
8630                 if (band < 0 || band >= NUM_NL80211_BANDS)
8631                         return -EINVAL;
8632
8633                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8634         }
8635
8636         return 0;
8637 }
8638
8639 static struct cfg80211_sched_scan_request *
8640 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8641                          struct nlattr **attrs, int max_match_sets)
8642 {
8643         struct cfg80211_sched_scan_request *request;
8644         struct nlattr *attr;
8645         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8646         enum nl80211_band band;
8647         size_t ie_len;
8648         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8649         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8650
8651         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8652                 n_channels = validate_scan_freqs(
8653                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8654                 if (!n_channels)
8655                         return ERR_PTR(-EINVAL);
8656         } else {
8657                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8658         }
8659
8660         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8661                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8662                                     tmp)
8663                         n_ssids++;
8664
8665         if (n_ssids > wiphy->max_sched_scan_ssids)
8666                 return ERR_PTR(-EINVAL);
8667
8668         /*
8669          * First, count the number of 'real' matchsets. Due to an issue with
8670          * the old implementation, matchsets containing only the RSSI attribute
8671          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8672          * RSSI for all matchsets, rather than their own matchset for reporting
8673          * all APs with a strong RSSI. This is needed to be compatible with
8674          * older userspace that treated a matchset with only the RSSI as the
8675          * global RSSI for all other matchsets - if there are other matchsets.
8676          */
8677         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8678                 nla_for_each_nested(attr,
8679                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8680                                     tmp) {
8681                         struct nlattr *rssi;
8682
8683                         err = nla_parse_nested_deprecated(tb,
8684                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8685                                                           attr,
8686                                                           nl80211_match_policy,
8687                                                           NULL);
8688                         if (err)
8689                                 return ERR_PTR(err);
8690
8691                         /* SSID and BSSID are mutually exclusive */
8692                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8693                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8694                                 return ERR_PTR(-EINVAL);
8695
8696                         /* add other standalone attributes here */
8697                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8698                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8699                                 n_match_sets++;
8700                                 continue;
8701                         }
8702                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8703                         if (rssi)
8704                                 default_match_rssi = nla_get_s32(rssi);
8705                 }
8706         }
8707
8708         /* However, if there's no other matchset, add the RSSI one */
8709         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8710                 n_match_sets = 1;
8711
8712         if (n_match_sets > max_match_sets)
8713                 return ERR_PTR(-EINVAL);
8714
8715         if (attrs[NL80211_ATTR_IE])
8716                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8717         else
8718                 ie_len = 0;
8719
8720         if (ie_len > wiphy->max_sched_scan_ie_len)
8721                 return ERR_PTR(-EINVAL);
8722
8723         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8724                 /*
8725                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8726                  * each scan plan already specifies its own interval
8727                  */
8728                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8729                         return ERR_PTR(-EINVAL);
8730
8731                 nla_for_each_nested(attr,
8732                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8733                         n_plans++;
8734         } else {
8735                 /*
8736                  * The scan interval attribute is kept for backward
8737                  * compatibility. If no scan plans are specified and sched scan
8738                  * interval is specified, one scan plan will be set with this
8739                  * scan interval and infinite number of iterations.
8740                  */
8741                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8742                         return ERR_PTR(-EINVAL);
8743
8744                 n_plans = 1;
8745         }
8746
8747         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8748                 return ERR_PTR(-EINVAL);
8749
8750         if (!wiphy_ext_feature_isset(
8751                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8752             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8753              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8754                 return ERR_PTR(-EINVAL);
8755
8756         request = kzalloc(sizeof(*request)
8757                         + sizeof(*request->ssids) * n_ssids
8758                         + sizeof(*request->match_sets) * n_match_sets
8759                         + sizeof(*request->scan_plans) * n_plans
8760                         + sizeof(*request->channels) * n_channels
8761                         + ie_len, GFP_KERNEL);
8762         if (!request)
8763                 return ERR_PTR(-ENOMEM);
8764
8765         if (n_ssids)
8766                 request->ssids = (void *)&request->channels[n_channels];
8767         request->n_ssids = n_ssids;
8768         if (ie_len) {
8769                 if (n_ssids)
8770                         request->ie = (void *)(request->ssids + n_ssids);
8771                 else
8772                         request->ie = (void *)(request->channels + n_channels);
8773         }
8774
8775         if (n_match_sets) {
8776                 if (request->ie)
8777                         request->match_sets = (void *)(request->ie + ie_len);
8778                 else if (n_ssids)
8779                         request->match_sets =
8780                                 (void *)(request->ssids + n_ssids);
8781                 else
8782                         request->match_sets =
8783                                 (void *)(request->channels + n_channels);
8784         }
8785         request->n_match_sets = n_match_sets;
8786
8787         if (n_match_sets)
8788                 request->scan_plans = (void *)(request->match_sets +
8789                                                n_match_sets);
8790         else if (request->ie)
8791                 request->scan_plans = (void *)(request->ie + ie_len);
8792         else if (n_ssids)
8793                 request->scan_plans = (void *)(request->ssids + n_ssids);
8794         else
8795                 request->scan_plans = (void *)(request->channels + n_channels);
8796
8797         request->n_scan_plans = n_plans;
8798
8799         i = 0;
8800         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8801                 /* user specified, bail out if channel not found */
8802                 nla_for_each_nested(attr,
8803                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8804                                     tmp) {
8805                         struct ieee80211_channel *chan;
8806
8807                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8808
8809                         if (!chan) {
8810                                 err = -EINVAL;
8811                                 goto out_free;
8812                         }
8813
8814                         /* ignore disabled channels */
8815                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8816                                 continue;
8817
8818                         request->channels[i] = chan;
8819                         i++;
8820                 }
8821         } else {
8822                 /* all channels */
8823                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8824                         int j;
8825
8826                         if (!wiphy->bands[band])
8827                                 continue;
8828                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8829                                 struct ieee80211_channel *chan;
8830
8831                                 chan = &wiphy->bands[band]->channels[j];
8832
8833                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8834                                         continue;
8835
8836                                 request->channels[i] = chan;
8837                                 i++;
8838                         }
8839                 }
8840         }
8841
8842         if (!i) {
8843                 err = -EINVAL;
8844                 goto out_free;
8845         }
8846
8847         request->n_channels = i;
8848
8849         i = 0;
8850         if (n_ssids) {
8851                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8852                                     tmp) {
8853                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8854                                 err = -EINVAL;
8855                                 goto out_free;
8856                         }
8857                         request->ssids[i].ssid_len = nla_len(attr);
8858                         memcpy(request->ssids[i].ssid, nla_data(attr),
8859                                nla_len(attr));
8860                         i++;
8861                 }
8862         }
8863
8864         i = 0;
8865         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8866                 nla_for_each_nested(attr,
8867                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8868                                     tmp) {
8869                         struct nlattr *ssid, *bssid, *rssi;
8870
8871                         err = nla_parse_nested_deprecated(tb,
8872                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8873                                                           attr,
8874                                                           nl80211_match_policy,
8875                                                           NULL);
8876                         if (err)
8877                                 goto out_free;
8878                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8879                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8880
8881                         if (!ssid && !bssid) {
8882                                 i++;
8883                                 continue;
8884                         }
8885
8886                         if (WARN_ON(i >= n_match_sets)) {
8887                                 /* this indicates a programming error,
8888                                  * the loop above should have verified
8889                                  * things properly
8890                                  */
8891                                 err = -EINVAL;
8892                                 goto out_free;
8893                         }
8894
8895                         if (ssid) {
8896                                 memcpy(request->match_sets[i].ssid.ssid,
8897                                        nla_data(ssid), nla_len(ssid));
8898                                 request->match_sets[i].ssid.ssid_len =
8899                                         nla_len(ssid);
8900                         }
8901                         if (bssid)
8902                                 memcpy(request->match_sets[i].bssid,
8903                                        nla_data(bssid), ETH_ALEN);
8904
8905                         /* special attribute - old implementation w/a */
8906                         request->match_sets[i].rssi_thold = default_match_rssi;
8907                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8908                         if (rssi)
8909                                 request->match_sets[i].rssi_thold =
8910                                         nla_get_s32(rssi);
8911
8912                         /* Parse per band RSSI attribute */
8913                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8914                                 &request->match_sets[i],
8915                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8916                                 request->match_sets[i].rssi_thold);
8917                         if (err)
8918                                 goto out_free;
8919
8920                         i++;
8921                 }
8922
8923                 /* there was no other matchset, so the RSSI one is alone */
8924                 if (i == 0 && n_match_sets)
8925                         request->match_sets[0].rssi_thold = default_match_rssi;
8926
8927                 request->min_rssi_thold = INT_MAX;
8928                 for (i = 0; i < n_match_sets; i++)
8929                         request->min_rssi_thold =
8930                                 min(request->match_sets[i].rssi_thold,
8931                                     request->min_rssi_thold);
8932         } else {
8933                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8934         }
8935
8936         if (ie_len) {
8937                 request->ie_len = ie_len;
8938                 memcpy((void *)request->ie,
8939                        nla_data(attrs[NL80211_ATTR_IE]),
8940                        request->ie_len);
8941         }
8942
8943         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8944         if (err)
8945                 goto out_free;
8946
8947         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8948                 request->delay =
8949                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8950
8951         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8952                 request->relative_rssi = nla_get_s8(
8953                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8954                 request->relative_rssi_set = true;
8955         }
8956
8957         if (request->relative_rssi_set &&
8958             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8959                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8960
8961                 rssi_adjust = nla_data(
8962                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8963                 request->rssi_adjust.band = rssi_adjust->band;
8964                 request->rssi_adjust.delta = rssi_adjust->delta;
8965                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8966                         err = -EINVAL;
8967                         goto out_free;
8968                 }
8969         }
8970
8971         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8972         if (err)
8973                 goto out_free;
8974
8975         request->scan_start = jiffies;
8976
8977         return request;
8978
8979 out_free:
8980         kfree(request);
8981         return ERR_PTR(err);
8982 }
8983
8984 static int nl80211_start_sched_scan(struct sk_buff *skb,
8985                                     struct genl_info *info)
8986 {
8987         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8988         struct net_device *dev = info->user_ptr[1];
8989         struct wireless_dev *wdev = dev->ieee80211_ptr;
8990         struct cfg80211_sched_scan_request *sched_scan_req;
8991         bool want_multi;
8992         int err;
8993
8994         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8995                 return -EOPNOTSUPP;
8996
8997         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8998         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8999         if (err)
9000                 return err;
9001
9002         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
9003                                                   info->attrs,
9004                                                   rdev->wiphy.max_match_sets);
9005
9006         err = PTR_ERR_OR_ZERO(sched_scan_req);
9007         if (err)
9008                 goto out_err;
9009
9010         /* leave request id zero for legacy request
9011          * or if driver does not support multi-scheduled scan
9012          */
9013         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9014                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9015
9016         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9017         if (err)
9018                 goto out_free;
9019
9020         sched_scan_req->dev = dev;
9021         sched_scan_req->wiphy = &rdev->wiphy;
9022
9023         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9024                 sched_scan_req->owner_nlportid = info->snd_portid;
9025
9026         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9027
9028         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9029         return 0;
9030
9031 out_free:
9032         kfree(sched_scan_req);
9033 out_err:
9034         return err;
9035 }
9036
9037 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9038                                    struct genl_info *info)
9039 {
9040         struct cfg80211_sched_scan_request *req;
9041         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9042         u64 cookie;
9043
9044         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9045                 return -EOPNOTSUPP;
9046
9047         if (info->attrs[NL80211_ATTR_COOKIE]) {
9048                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9049                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9050         }
9051
9052         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9053                                      struct cfg80211_sched_scan_request,
9054                                      list);
9055         if (!req || req->reqid ||
9056             (req->owner_nlportid &&
9057              req->owner_nlportid != info->snd_portid))
9058                 return -ENOENT;
9059
9060         return cfg80211_stop_sched_scan_req(rdev, req, false);
9061 }
9062
9063 static int nl80211_start_radar_detection(struct sk_buff *skb,
9064                                          struct genl_info *info)
9065 {
9066         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9067         struct net_device *dev = info->user_ptr[1];
9068         struct wireless_dev *wdev = dev->ieee80211_ptr;
9069         struct wiphy *wiphy = wdev->wiphy;
9070         struct cfg80211_chan_def chandef;
9071         enum nl80211_dfs_regions dfs_region;
9072         unsigned int cac_time_ms;
9073         int err;
9074
9075         dfs_region = reg_get_dfs_region(wiphy);
9076         if (dfs_region == NL80211_DFS_UNSET)
9077                 return -EINVAL;
9078
9079         err = nl80211_parse_chandef(rdev, info, &chandef);
9080         if (err)
9081                 return err;
9082
9083         if (netif_carrier_ok(dev))
9084                 return -EBUSY;
9085
9086         if (wdev->cac_started)
9087                 return -EBUSY;
9088
9089         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9090         if (err < 0)
9091                 return err;
9092
9093         if (err == 0)
9094                 return -EINVAL;
9095
9096         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
9097                 return -EINVAL;
9098
9099         /* CAC start is offloaded to HW and can't be started manually */
9100         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
9101                 return -EOPNOTSUPP;
9102
9103         if (!rdev->ops->start_radar_detection)
9104                 return -EOPNOTSUPP;
9105
9106         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9107         if (WARN_ON(!cac_time_ms))
9108                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9109
9110         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9111         if (!err) {
9112                 wdev->chandef = chandef;
9113                 wdev->cac_started = true;
9114                 wdev->cac_start_time = jiffies;
9115                 wdev->cac_time_ms = cac_time_ms;
9116         }
9117         return err;
9118 }
9119
9120 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9121                                           struct genl_info *info)
9122 {
9123         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9124         struct net_device *dev = info->user_ptr[1];
9125         struct wireless_dev *wdev = dev->ieee80211_ptr;
9126         struct wiphy *wiphy = wdev->wiphy;
9127         struct cfg80211_chan_def chandef;
9128         enum nl80211_dfs_regions dfs_region;
9129         int err;
9130
9131         dfs_region = reg_get_dfs_region(wiphy);
9132         if (dfs_region == NL80211_DFS_UNSET) {
9133                 GENL_SET_ERR_MSG(info,
9134                                  "DFS Region is not set. Unexpected Radar indication");
9135                 return -EINVAL;
9136         }
9137
9138         err = nl80211_parse_chandef(rdev, info, &chandef);
9139         if (err) {
9140                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9141                 return err;
9142         }
9143
9144         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9145         if (err < 0) {
9146                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9147                 return err;
9148         }
9149
9150         if (err == 0) {
9151                 GENL_SET_ERR_MSG(info,
9152                                  "Unexpected Radar indication for chandef/iftype");
9153                 return -EINVAL;
9154         }
9155
9156         /* Do not process this notification if radar is already detected
9157          * by kernel on this channel, and return success.
9158          */
9159         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9160                 return 0;
9161
9162         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9163
9164         cfg80211_sched_dfs_chan_update(rdev);
9165
9166         rdev->radar_chandef = chandef;
9167
9168         /* Propagate this notification to other radios as well */
9169         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9170
9171         return 0;
9172 }
9173
9174 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9175 {
9176         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9177         struct net_device *dev = info->user_ptr[1];
9178         struct wireless_dev *wdev = dev->ieee80211_ptr;
9179         struct cfg80211_csa_settings params;
9180         struct nlattr **csa_attrs = NULL;
9181         int err;
9182         bool need_new_beacon = false;
9183         bool need_handle_dfs_flag = true;
9184         int len, i;
9185         u32 cs_count;
9186
9187         if (!rdev->ops->channel_switch ||
9188             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9189                 return -EOPNOTSUPP;
9190
9191         switch (dev->ieee80211_ptr->iftype) {
9192         case NL80211_IFTYPE_AP:
9193         case NL80211_IFTYPE_P2P_GO:
9194                 need_new_beacon = true;
9195                 /* For all modes except AP the handle_dfs flag needs to be
9196                  * supplied to tell the kernel that userspace will handle radar
9197                  * events when they happen. Otherwise a switch to a channel
9198                  * requiring DFS will be rejected.
9199                  */
9200                 need_handle_dfs_flag = false;
9201
9202                 /* useless if AP is not running */
9203                 if (!wdev->beacon_interval)
9204                         return -ENOTCONN;
9205                 break;
9206         case NL80211_IFTYPE_ADHOC:
9207                 if (!wdev->ssid_len)
9208                         return -ENOTCONN;
9209                 break;
9210         case NL80211_IFTYPE_MESH_POINT:
9211                 if (!wdev->mesh_id_len)
9212                         return -ENOTCONN;
9213                 break;
9214         default:
9215                 return -EOPNOTSUPP;
9216         }
9217
9218         memset(&params, 0, sizeof(params));
9219         params.beacon_csa.ftm_responder = -1;
9220
9221         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9222             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9223                 return -EINVAL;
9224
9225         /* only important for AP, IBSS and mesh create IEs internally */
9226         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9227                 return -EINVAL;
9228
9229         /* Even though the attribute is u32, the specification says
9230          * u8, so let's make sure we don't overflow.
9231          */
9232         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9233         if (cs_count > 255)
9234                 return -EINVAL;
9235
9236         params.count = cs_count;
9237
9238         if (!need_new_beacon)
9239                 goto skip_beacons;
9240
9241         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9242         if (err)
9243                 return err;
9244
9245         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9246                             GFP_KERNEL);
9247         if (!csa_attrs)
9248                 return -ENOMEM;
9249
9250         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9251                                           info->attrs[NL80211_ATTR_CSA_IES],
9252                                           nl80211_policy, info->extack);
9253         if (err)
9254                 goto free;
9255
9256         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9257         if (err)
9258                 goto free;
9259
9260         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9261                 err = -EINVAL;
9262                 goto free;
9263         }
9264
9265         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9266         if (!len || (len % sizeof(u16))) {
9267                 err = -EINVAL;
9268                 goto free;
9269         }
9270
9271         params.n_counter_offsets_beacon = len / sizeof(u16);
9272         if (rdev->wiphy.max_num_csa_counters &&
9273             (params.n_counter_offsets_beacon >
9274              rdev->wiphy.max_num_csa_counters)) {
9275                 err = -EINVAL;
9276                 goto free;
9277         }
9278
9279         params.counter_offsets_beacon =
9280                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9281
9282         /* sanity checks - counters should fit and be the same */
9283         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9284                 u16 offset = params.counter_offsets_beacon[i];
9285
9286                 if (offset >= params.beacon_csa.tail_len) {
9287                         err = -EINVAL;
9288                         goto free;
9289                 }
9290
9291                 if (params.beacon_csa.tail[offset] != params.count) {
9292                         err = -EINVAL;
9293                         goto free;
9294                 }
9295         }
9296
9297         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9298                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9299                 if (!len || (len % sizeof(u16))) {
9300                         err = -EINVAL;
9301                         goto free;
9302                 }
9303
9304                 params.n_counter_offsets_presp = len / sizeof(u16);
9305                 if (rdev->wiphy.max_num_csa_counters &&
9306                     (params.n_counter_offsets_presp >
9307                      rdev->wiphy.max_num_csa_counters)) {
9308                         err = -EINVAL;
9309                         goto free;
9310                 }
9311
9312                 params.counter_offsets_presp =
9313                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9314
9315                 /* sanity checks - counters should fit and be the same */
9316                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9317                         u16 offset = params.counter_offsets_presp[i];
9318
9319                         if (offset >= params.beacon_csa.probe_resp_len) {
9320                                 err = -EINVAL;
9321                                 goto free;
9322                         }
9323
9324                         if (params.beacon_csa.probe_resp[offset] !=
9325                             params.count) {
9326                                 err = -EINVAL;
9327                                 goto free;
9328                         }
9329                 }
9330         }
9331
9332 skip_beacons:
9333         err = nl80211_parse_chandef(rdev, info, &params.chandef);
9334         if (err)
9335                 goto free;
9336
9337         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9338                                            wdev->iftype)) {
9339                 err = -EINVAL;
9340                 goto free;
9341         }
9342
9343         err = cfg80211_chandef_dfs_required(wdev->wiphy,
9344                                             &params.chandef,
9345                                             wdev->iftype);
9346         if (err < 0)
9347                 goto free;
9348
9349         if (err > 0) {
9350                 params.radar_required = true;
9351                 if (need_handle_dfs_flag &&
9352                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9353                         err = -EINVAL;
9354                         goto free;
9355                 }
9356         }
9357
9358         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9359                 params.block_tx = true;
9360
9361         wdev_lock(wdev);
9362         err = rdev_channel_switch(rdev, dev, &params);
9363         wdev_unlock(wdev);
9364
9365 free:
9366         kfree(csa_attrs);
9367         return err;
9368 }
9369
9370 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9371                             u32 seq, int flags,
9372                             struct cfg80211_registered_device *rdev,
9373                             struct wireless_dev *wdev,
9374                             struct cfg80211_internal_bss *intbss)
9375 {
9376         struct cfg80211_bss *res = &intbss->pub;
9377         const struct cfg80211_bss_ies *ies;
9378         void *hdr;
9379         struct nlattr *bss;
9380
9381         ASSERT_WDEV_LOCK(wdev);
9382
9383         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9384                              NL80211_CMD_NEW_SCAN_RESULTS);
9385         if (!hdr)
9386                 return -1;
9387
9388         genl_dump_check_consistent(cb, hdr);
9389
9390         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9391                 goto nla_put_failure;
9392         if (wdev->netdev &&
9393             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9394                 goto nla_put_failure;
9395         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9396                               NL80211_ATTR_PAD))
9397                 goto nla_put_failure;
9398
9399         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9400         if (!bss)
9401                 goto nla_put_failure;
9402         if ((!is_zero_ether_addr(res->bssid) &&
9403              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9404                 goto nla_put_failure;
9405
9406         rcu_read_lock();
9407         /* indicate whether we have probe response data or not */
9408         if (rcu_access_pointer(res->proberesp_ies) &&
9409             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9410                 goto fail_unlock_rcu;
9411
9412         /* this pointer prefers to be pointed to probe response data
9413          * but is always valid
9414          */
9415         ies = rcu_dereference(res->ies);
9416         if (ies) {
9417                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9418                                       NL80211_BSS_PAD))
9419                         goto fail_unlock_rcu;
9420                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9421                                         ies->len, ies->data))
9422                         goto fail_unlock_rcu;
9423         }
9424
9425         /* and this pointer is always (unless driver didn't know) beacon data */
9426         ies = rcu_dereference(res->beacon_ies);
9427         if (ies && ies->from_beacon) {
9428                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9429                                       NL80211_BSS_PAD))
9430                         goto fail_unlock_rcu;
9431                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9432                                         ies->len, ies->data))
9433                         goto fail_unlock_rcu;
9434         }
9435         rcu_read_unlock();
9436
9437         if (res->beacon_interval &&
9438             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9439                 goto nla_put_failure;
9440         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9441             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9442             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9443                         res->channel->freq_offset) ||
9444             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9445             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9446                         jiffies_to_msecs(jiffies - intbss->ts)))
9447                 goto nla_put_failure;
9448
9449         if (intbss->parent_tsf &&
9450             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9451                                intbss->parent_tsf, NL80211_BSS_PAD) ||
9452              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9453                      intbss->parent_bssid)))
9454                 goto nla_put_failure;
9455
9456         if (intbss->ts_boottime &&
9457             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9458                               intbss->ts_boottime, NL80211_BSS_PAD))
9459                 goto nla_put_failure;
9460
9461         if (!nl80211_put_signal(msg, intbss->pub.chains,
9462                                 intbss->pub.chain_signal,
9463                                 NL80211_BSS_CHAIN_SIGNAL))
9464                 goto nla_put_failure;
9465
9466         switch (rdev->wiphy.signal_type) {
9467         case CFG80211_SIGNAL_TYPE_MBM:
9468                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9469                         goto nla_put_failure;
9470                 break;
9471         case CFG80211_SIGNAL_TYPE_UNSPEC:
9472                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9473                         goto nla_put_failure;
9474                 break;
9475         default:
9476                 break;
9477         }
9478
9479         switch (wdev->iftype) {
9480         case NL80211_IFTYPE_P2P_CLIENT:
9481         case NL80211_IFTYPE_STATION:
9482                 if (intbss == wdev->current_bss &&
9483                     nla_put_u32(msg, NL80211_BSS_STATUS,
9484                                 NL80211_BSS_STATUS_ASSOCIATED))
9485                         goto nla_put_failure;
9486                 break;
9487         case NL80211_IFTYPE_ADHOC:
9488                 if (intbss == wdev->current_bss &&
9489                     nla_put_u32(msg, NL80211_BSS_STATUS,
9490                                 NL80211_BSS_STATUS_IBSS_JOINED))
9491                         goto nla_put_failure;
9492                 break;
9493         default:
9494                 break;
9495         }
9496
9497         nla_nest_end(msg, bss);
9498
9499         genlmsg_end(msg, hdr);
9500         return 0;
9501
9502  fail_unlock_rcu:
9503         rcu_read_unlock();
9504  nla_put_failure:
9505         genlmsg_cancel(msg, hdr);
9506         return -EMSGSIZE;
9507 }
9508
9509 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9510 {
9511         struct cfg80211_registered_device *rdev;
9512         struct cfg80211_internal_bss *scan;
9513         struct wireless_dev *wdev;
9514         int start = cb->args[2], idx = 0;
9515         int err;
9516
9517         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9518         if (err)
9519                 return err;
9520         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9521         __acquire(&rdev->wiphy.mtx);
9522
9523         wdev_lock(wdev);
9524         spin_lock_bh(&rdev->bss_lock);
9525
9526         /*
9527          * dump_scan will be called multiple times to break up the scan results
9528          * into multiple messages.  It is unlikely that any more bss-es will be
9529          * expired after the first call, so only call only call this on the
9530          * first dump_scan invocation.
9531          */
9532         if (start == 0)
9533                 cfg80211_bss_expire(rdev);
9534
9535         cb->seq = rdev->bss_generation;
9536
9537         list_for_each_entry(scan, &rdev->bss_list, list) {
9538                 if (++idx <= start)
9539                         continue;
9540                 if (nl80211_send_bss(skb, cb,
9541                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9542                                 rdev, wdev, scan) < 0) {
9543                         idx--;
9544                         break;
9545                 }
9546         }
9547
9548         spin_unlock_bh(&rdev->bss_lock);
9549         wdev_unlock(wdev);
9550
9551         cb->args[2] = idx;
9552         wiphy_unlock(&rdev->wiphy);
9553
9554         return skb->len;
9555 }
9556
9557 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9558                                int flags, struct net_device *dev,
9559                                bool allow_radio_stats,
9560                                struct survey_info *survey)
9561 {
9562         void *hdr;
9563         struct nlattr *infoattr;
9564
9565         /* skip radio stats if userspace didn't request them */
9566         if (!survey->channel && !allow_radio_stats)
9567                 return 0;
9568
9569         hdr = nl80211hdr_put(msg, portid, seq, flags,
9570                              NL80211_CMD_NEW_SURVEY_RESULTS);
9571         if (!hdr)
9572                 return -ENOMEM;
9573
9574         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9575                 goto nla_put_failure;
9576
9577         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9578         if (!infoattr)
9579                 goto nla_put_failure;
9580
9581         if (survey->channel &&
9582             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9583                         survey->channel->center_freq))
9584                 goto nla_put_failure;
9585
9586         if (survey->channel && survey->channel->freq_offset &&
9587             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9588                         survey->channel->freq_offset))
9589                 goto nla_put_failure;
9590
9591         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9592             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9593                 goto nla_put_failure;
9594         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9595             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9596                 goto nla_put_failure;
9597         if ((survey->filled & SURVEY_INFO_TIME) &&
9598             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9599                         survey->time, NL80211_SURVEY_INFO_PAD))
9600                 goto nla_put_failure;
9601         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9602             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9603                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9604                 goto nla_put_failure;
9605         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9606             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9607                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9608                 goto nla_put_failure;
9609         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9610             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9611                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9612                 goto nla_put_failure;
9613         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9614             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9615                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9616                 goto nla_put_failure;
9617         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9618             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9619                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9620                 goto nla_put_failure;
9621         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9622             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9623                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9624                 goto nla_put_failure;
9625
9626         nla_nest_end(msg, infoattr);
9627
9628         genlmsg_end(msg, hdr);
9629         return 0;
9630
9631  nla_put_failure:
9632         genlmsg_cancel(msg, hdr);
9633         return -EMSGSIZE;
9634 }
9635
9636 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9637 {
9638         struct nlattr **attrbuf;
9639         struct survey_info survey;
9640         struct cfg80211_registered_device *rdev;
9641         struct wireless_dev *wdev;
9642         int survey_idx = cb->args[2];
9643         int res;
9644         bool radio_stats;
9645
9646         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9647         if (!attrbuf)
9648                 return -ENOMEM;
9649
9650         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9651         if (res) {
9652                 kfree(attrbuf);
9653                 return res;
9654         }
9655         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9656         __acquire(&rdev->wiphy.mtx);
9657
9658         /* prepare_wdev_dump parsed the attributes */
9659         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9660
9661         if (!wdev->netdev) {
9662                 res = -EINVAL;
9663                 goto out_err;
9664         }
9665
9666         if (!rdev->ops->dump_survey) {
9667                 res = -EOPNOTSUPP;
9668                 goto out_err;
9669         }
9670
9671         while (1) {
9672                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9673                 if (res == -ENOENT)
9674                         break;
9675                 if (res)
9676                         goto out_err;
9677
9678                 /* don't send disabled channels, but do send non-channel data */
9679                 if (survey.channel &&
9680                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9681                         survey_idx++;
9682                         continue;
9683                 }
9684
9685                 if (nl80211_send_survey(skb,
9686                                 NETLINK_CB(cb->skb).portid,
9687                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9688                                 wdev->netdev, radio_stats, &survey) < 0)
9689                         goto out;
9690                 survey_idx++;
9691         }
9692
9693  out:
9694         cb->args[2] = survey_idx;
9695         res = skb->len;
9696  out_err:
9697         kfree(attrbuf);
9698         wiphy_unlock(&rdev->wiphy);
9699         return res;
9700 }
9701
9702 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9703 {
9704         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9705                                   NL80211_WPA_VERSION_2 |
9706                                   NL80211_WPA_VERSION_3));
9707 }
9708
9709 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9710 {
9711         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9712         struct net_device *dev = info->user_ptr[1];
9713         struct ieee80211_channel *chan;
9714         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9715         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9716         enum nl80211_auth_type auth_type;
9717         struct key_parse key;
9718         bool local_state_change;
9719         u32 freq;
9720
9721         if (!info->attrs[NL80211_ATTR_MAC])
9722                 return -EINVAL;
9723
9724         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9725                 return -EINVAL;
9726
9727         if (!info->attrs[NL80211_ATTR_SSID])
9728                 return -EINVAL;
9729
9730         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9731                 return -EINVAL;
9732
9733         err = nl80211_parse_key(info, &key);
9734         if (err)
9735                 return err;
9736
9737         if (key.idx >= 0) {
9738                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9739                         return -EINVAL;
9740                 if (!key.p.key || !key.p.key_len)
9741                         return -EINVAL;
9742                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9743                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9744                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9745                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9746                         return -EINVAL;
9747                 if (key.idx > 3)
9748                         return -EINVAL;
9749         } else {
9750                 key.p.key_len = 0;
9751                 key.p.key = NULL;
9752         }
9753
9754         if (key.idx >= 0) {
9755                 int i;
9756                 bool ok = false;
9757
9758                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9759                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9760                                 ok = true;
9761                                 break;
9762                         }
9763                 }
9764                 if (!ok)
9765                         return -EINVAL;
9766         }
9767
9768         if (!rdev->ops->auth)
9769                 return -EOPNOTSUPP;
9770
9771         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9772             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9773                 return -EOPNOTSUPP;
9774
9775         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9776         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9777         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9778                 freq +=
9779                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9780
9781         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9782         if (!chan)
9783                 return -EINVAL;
9784
9785         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9786         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9787
9788         if (info->attrs[NL80211_ATTR_IE]) {
9789                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9790                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9791         }
9792
9793         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9794         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9795                 return -EINVAL;
9796
9797         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9798              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9799              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9800              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9801             !info->attrs[NL80211_ATTR_AUTH_DATA])
9802                 return -EINVAL;
9803
9804         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9805                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9806                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9807                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9808                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9809                         return -EINVAL;
9810                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9811                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9812         }
9813
9814         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9815
9816         /*
9817          * Since we no longer track auth state, ignore
9818          * requests to only change local state.
9819          */
9820         if (local_state_change)
9821                 return 0;
9822
9823         wdev_lock(dev->ieee80211_ptr);
9824         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9825                                  ssid, ssid_len, ie, ie_len,
9826                                  key.p.key, key.p.key_len, key.idx,
9827                                  auth_data, auth_data_len);
9828         wdev_unlock(dev->ieee80211_ptr);
9829         return err;
9830 }
9831
9832 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9833                                      struct genl_info *info)
9834 {
9835         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9836                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9837                 return -EINVAL;
9838         }
9839
9840         if (!rdev->ops->tx_control_port ||
9841             !wiphy_ext_feature_isset(&rdev->wiphy,
9842                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9843                 return -EOPNOTSUPP;
9844
9845         return 0;
9846 }
9847
9848 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9849                                    struct genl_info *info,
9850                                    struct cfg80211_crypto_settings *settings,
9851                                    int cipher_limit)
9852 {
9853         memset(settings, 0, sizeof(*settings));
9854
9855         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9856
9857         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9858                 u16 proto;
9859
9860                 proto = nla_get_u16(
9861                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9862                 settings->control_port_ethertype = cpu_to_be16(proto);
9863                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9864                     proto != ETH_P_PAE)
9865                         return -EINVAL;
9866                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9867                         settings->control_port_no_encrypt = true;
9868         } else
9869                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9870
9871         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9872                 int r = validate_pae_over_nl80211(rdev, info);
9873
9874                 if (r < 0)
9875                         return r;
9876
9877                 settings->control_port_over_nl80211 = true;
9878
9879                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9880                         settings->control_port_no_preauth = true;
9881         }
9882
9883         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9884                 void *data;
9885                 int len, i;
9886
9887                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9888                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9889                 settings->n_ciphers_pairwise = len / sizeof(u32);
9890
9891                 if (len % sizeof(u32))
9892                         return -EINVAL;
9893
9894                 if (settings->n_ciphers_pairwise > cipher_limit)
9895                         return -EINVAL;
9896
9897                 memcpy(settings->ciphers_pairwise, data, len);
9898
9899                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9900                         if (!cfg80211_supported_cipher_suite(
9901                                         &rdev->wiphy,
9902                                         settings->ciphers_pairwise[i]))
9903                                 return -EINVAL;
9904         }
9905
9906         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9907                 settings->cipher_group =
9908                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9909                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9910                                                      settings->cipher_group))
9911                         return -EINVAL;
9912         }
9913
9914         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9915                 settings->wpa_versions =
9916                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9917                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9918                         return -EINVAL;
9919         }
9920
9921         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9922                 void *data;
9923                 int len;
9924
9925                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9926                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9927                 settings->n_akm_suites = len / sizeof(u32);
9928
9929                 if (len % sizeof(u32))
9930                         return -EINVAL;
9931
9932                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9933                         return -EINVAL;
9934
9935                 memcpy(settings->akm_suites, data, len);
9936         }
9937
9938         if (info->attrs[NL80211_ATTR_PMK]) {
9939                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9940                         return -EINVAL;
9941                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9942                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9943                     !wiphy_ext_feature_isset(&rdev->wiphy,
9944                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9945                         return -EINVAL;
9946                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9947         }
9948
9949         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9950                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9951                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9952                     !wiphy_ext_feature_isset(&rdev->wiphy,
9953                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9954                         return -EINVAL;
9955                 settings->sae_pwd =
9956                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9957                 settings->sae_pwd_len =
9958                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9959         }
9960
9961         if (info->attrs[NL80211_ATTR_SAE_PWE])
9962                 settings->sae_pwe =
9963                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
9964         else
9965                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
9966
9967         return 0;
9968 }
9969
9970 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9971 {
9972         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9973         struct net_device *dev = info->user_ptr[1];
9974         struct ieee80211_channel *chan;
9975         struct cfg80211_assoc_request req = {};
9976         const u8 *bssid, *ssid;
9977         int err, ssid_len = 0;
9978         u32 freq;
9979
9980         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9981             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9982                 return -EPERM;
9983
9984         if (!info->attrs[NL80211_ATTR_MAC] ||
9985             !info->attrs[NL80211_ATTR_SSID] ||
9986             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9987                 return -EINVAL;
9988
9989         if (!rdev->ops->assoc)
9990                 return -EOPNOTSUPP;
9991
9992         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9993             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9994                 return -EOPNOTSUPP;
9995
9996         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9997
9998         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9999         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10000                 freq +=
10001                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10002         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
10003         if (!chan)
10004                 return -EINVAL;
10005
10006         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10007         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10008
10009         if (info->attrs[NL80211_ATTR_IE]) {
10010                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10011                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10012         }
10013
10014         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10015                 enum nl80211_mfp mfp =
10016                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10017                 if (mfp == NL80211_MFP_REQUIRED)
10018                         req.use_mfp = true;
10019                 else if (mfp != NL80211_MFP_NO)
10020                         return -EINVAL;
10021         }
10022
10023         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10024                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10025
10026         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10027                 req.flags |= ASSOC_REQ_DISABLE_HT;
10028
10029         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10030                 memcpy(&req.ht_capa_mask,
10031                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10032                        sizeof(req.ht_capa_mask));
10033
10034         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10035                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10036                         return -EINVAL;
10037                 memcpy(&req.ht_capa,
10038                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10039                        sizeof(req.ht_capa));
10040         }
10041
10042         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10043                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10044
10045         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10046                 req.flags |= ASSOC_REQ_DISABLE_HE;
10047
10048         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10049                 memcpy(&req.vht_capa_mask,
10050                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10051                        sizeof(req.vht_capa_mask));
10052
10053         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10054                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10055                         return -EINVAL;
10056                 memcpy(&req.vht_capa,
10057                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10058                        sizeof(req.vht_capa));
10059         }
10060
10061         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10062                 if (!((rdev->wiphy.features &
10063                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10064                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10065                     !wiphy_ext_feature_isset(&rdev->wiphy,
10066                                              NL80211_EXT_FEATURE_RRM))
10067                         return -EINVAL;
10068                 req.flags |= ASSOC_REQ_USE_RRM;
10069         }
10070
10071         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10072                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10073                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10074                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10075                         return -EINVAL;
10076                 req.fils_nonces =
10077                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10078         }
10079
10080         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10081                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10082                         return -EINVAL;
10083                 memcpy(&req.s1g_capa_mask,
10084                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10085                        sizeof(req.s1g_capa_mask));
10086         }
10087
10088         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10089                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10090                         return -EINVAL;
10091                 memcpy(&req.s1g_capa,
10092                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10093                        sizeof(req.s1g_capa));
10094         }
10095
10096         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10097         if (!err) {
10098                 wdev_lock(dev->ieee80211_ptr);
10099
10100                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
10101                                           ssid, ssid_len, &req);
10102
10103                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10104                         dev->ieee80211_ptr->conn_owner_nlportid =
10105                                 info->snd_portid;
10106                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10107                                bssid, ETH_ALEN);
10108                 }
10109
10110                 wdev_unlock(dev->ieee80211_ptr);
10111         }
10112
10113         return err;
10114 }
10115
10116 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10117 {
10118         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10119         struct net_device *dev = info->user_ptr[1];
10120         const u8 *ie = NULL, *bssid;
10121         int ie_len = 0, err;
10122         u16 reason_code;
10123         bool local_state_change;
10124
10125         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10126             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10127                 return -EPERM;
10128
10129         if (!info->attrs[NL80211_ATTR_MAC])
10130                 return -EINVAL;
10131
10132         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10133                 return -EINVAL;
10134
10135         if (!rdev->ops->deauth)
10136                 return -EOPNOTSUPP;
10137
10138         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10139             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10140                 return -EOPNOTSUPP;
10141
10142         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10143
10144         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10145         if (reason_code == 0) {
10146                 /* Reason Code 0 is reserved */
10147                 return -EINVAL;
10148         }
10149
10150         if (info->attrs[NL80211_ATTR_IE]) {
10151                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10152                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10153         }
10154
10155         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10156
10157         wdev_lock(dev->ieee80211_ptr);
10158         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
10159                                    local_state_change);
10160         wdev_unlock(dev->ieee80211_ptr);
10161         return err;
10162 }
10163
10164 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
10165 {
10166         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10167         struct net_device *dev = info->user_ptr[1];
10168         const u8 *ie = NULL, *bssid;
10169         int ie_len = 0, err;
10170         u16 reason_code;
10171         bool local_state_change;
10172
10173         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10174             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10175                 return -EPERM;
10176
10177         if (!info->attrs[NL80211_ATTR_MAC])
10178                 return -EINVAL;
10179
10180         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10181                 return -EINVAL;
10182
10183         if (!rdev->ops->disassoc)
10184                 return -EOPNOTSUPP;
10185
10186         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10187             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10188                 return -EOPNOTSUPP;
10189
10190         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10191
10192         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10193         if (reason_code == 0) {
10194                 /* Reason Code 0 is reserved */
10195                 return -EINVAL;
10196         }
10197
10198         if (info->attrs[NL80211_ATTR_IE]) {
10199                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10200                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10201         }
10202
10203         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10204
10205         wdev_lock(dev->ieee80211_ptr);
10206         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
10207                                      local_state_change);
10208         wdev_unlock(dev->ieee80211_ptr);
10209         return err;
10210 }
10211
10212 static bool
10213 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
10214                          int mcast_rate[NUM_NL80211_BANDS],
10215                          int rateval)
10216 {
10217         struct wiphy *wiphy = &rdev->wiphy;
10218         bool found = false;
10219         int band, i;
10220
10221         for (band = 0; band < NUM_NL80211_BANDS; band++) {
10222                 struct ieee80211_supported_band *sband;
10223
10224                 sband = wiphy->bands[band];
10225                 if (!sband)
10226                         continue;
10227
10228                 for (i = 0; i < sband->n_bitrates; i++) {
10229                         if (sband->bitrates[i].bitrate == rateval) {
10230                                 mcast_rate[band] = i + 1;
10231                                 found = true;
10232                                 break;
10233                         }
10234                 }
10235         }
10236
10237         return found;
10238 }
10239
10240 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10241 {
10242         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10243         struct net_device *dev = info->user_ptr[1];
10244         struct cfg80211_ibss_params ibss;
10245         struct wiphy *wiphy;
10246         struct cfg80211_cached_keys *connkeys = NULL;
10247         int err;
10248
10249         memset(&ibss, 0, sizeof(ibss));
10250
10251         if (!info->attrs[NL80211_ATTR_SSID] ||
10252             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10253                 return -EINVAL;
10254
10255         ibss.beacon_interval = 100;
10256
10257         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10258                 ibss.beacon_interval =
10259                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10260
10261         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10262                                            ibss.beacon_interval);
10263         if (err)
10264                 return err;
10265
10266         if (!rdev->ops->join_ibss)
10267                 return -EOPNOTSUPP;
10268
10269         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10270                 return -EOPNOTSUPP;
10271
10272         wiphy = &rdev->wiphy;
10273
10274         if (info->attrs[NL80211_ATTR_MAC]) {
10275                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10276
10277                 if (!is_valid_ether_addr(ibss.bssid))
10278                         return -EINVAL;
10279         }
10280         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10281         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10282
10283         if (info->attrs[NL80211_ATTR_IE]) {
10284                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10285                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10286         }
10287
10288         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10289         if (err)
10290                 return err;
10291
10292         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10293                                      NL80211_IFTYPE_ADHOC))
10294                 return -EINVAL;
10295
10296         switch (ibss.chandef.width) {
10297         case NL80211_CHAN_WIDTH_5:
10298         case NL80211_CHAN_WIDTH_10:
10299         case NL80211_CHAN_WIDTH_20_NOHT:
10300                 break;
10301         case NL80211_CHAN_WIDTH_20:
10302         case NL80211_CHAN_WIDTH_40:
10303                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10304                         return -EINVAL;
10305                 break;
10306         case NL80211_CHAN_WIDTH_80:
10307         case NL80211_CHAN_WIDTH_80P80:
10308         case NL80211_CHAN_WIDTH_160:
10309                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10310                         return -EINVAL;
10311                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10312                                              NL80211_EXT_FEATURE_VHT_IBSS))
10313                         return -EINVAL;
10314                 break;
10315         default:
10316                 return -EINVAL;
10317         }
10318
10319         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10320         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10321
10322         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10323                 u8 *rates =
10324                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10325                 int n_rates =
10326                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10327                 struct ieee80211_supported_band *sband =
10328                         wiphy->bands[ibss.chandef.chan->band];
10329
10330                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10331                                              &ibss.basic_rates);
10332                 if (err)
10333                         return err;
10334         }
10335
10336         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10337                 memcpy(&ibss.ht_capa_mask,
10338                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10339                        sizeof(ibss.ht_capa_mask));
10340
10341         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10342                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10343                         return -EINVAL;
10344                 memcpy(&ibss.ht_capa,
10345                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10346                        sizeof(ibss.ht_capa));
10347         }
10348
10349         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10350             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10351                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10352                 return -EINVAL;
10353
10354         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10355                 bool no_ht = false;
10356
10357                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10358                 if (IS_ERR(connkeys))
10359                         return PTR_ERR(connkeys);
10360
10361                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10362                     no_ht) {
10363                         kfree_sensitive(connkeys);
10364                         return -EINVAL;
10365                 }
10366         }
10367
10368         ibss.control_port =
10369                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10370
10371         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10372                 int r = validate_pae_over_nl80211(rdev, info);
10373
10374                 if (r < 0) {
10375                         kfree_sensitive(connkeys);
10376                         return r;
10377                 }
10378
10379                 ibss.control_port_over_nl80211 = true;
10380         }
10381
10382         ibss.userspace_handles_dfs =
10383                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10384
10385         wdev_lock(dev->ieee80211_ptr);
10386         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10387         if (err)
10388                 kfree_sensitive(connkeys);
10389         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10390                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10391         wdev_unlock(dev->ieee80211_ptr);
10392
10393         return err;
10394 }
10395
10396 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10397 {
10398         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10399         struct net_device *dev = info->user_ptr[1];
10400
10401         if (!rdev->ops->leave_ibss)
10402                 return -EOPNOTSUPP;
10403
10404         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10405                 return -EOPNOTSUPP;
10406
10407         return cfg80211_leave_ibss(rdev, dev, false);
10408 }
10409
10410 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10411 {
10412         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10413         struct net_device *dev = info->user_ptr[1];
10414         int mcast_rate[NUM_NL80211_BANDS];
10415         u32 nla_rate;
10416         int err;
10417
10418         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10419             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10420             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10421                 return -EOPNOTSUPP;
10422
10423         if (!rdev->ops->set_mcast_rate)
10424                 return -EOPNOTSUPP;
10425
10426         memset(mcast_rate, 0, sizeof(mcast_rate));
10427
10428         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10429                 return -EINVAL;
10430
10431         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10432         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10433                 return -EINVAL;
10434
10435         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10436
10437         return err;
10438 }
10439
10440 static struct sk_buff *
10441 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10442                             struct wireless_dev *wdev, int approxlen,
10443                             u32 portid, u32 seq, enum nl80211_commands cmd,
10444                             enum nl80211_attrs attr,
10445                             const struct nl80211_vendor_cmd_info *info,
10446                             gfp_t gfp)
10447 {
10448         struct sk_buff *skb;
10449         void *hdr;
10450         struct nlattr *data;
10451
10452         skb = nlmsg_new(approxlen + 100, gfp);
10453         if (!skb)
10454                 return NULL;
10455
10456         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10457         if (!hdr) {
10458                 kfree_skb(skb);
10459                 return NULL;
10460         }
10461
10462         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10463                 goto nla_put_failure;
10464
10465         if (info) {
10466                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10467                                 info->vendor_id))
10468                         goto nla_put_failure;
10469                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10470                                 info->subcmd))
10471                         goto nla_put_failure;
10472         }
10473
10474         if (wdev) {
10475                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10476                                       wdev_id(wdev), NL80211_ATTR_PAD))
10477                         goto nla_put_failure;
10478                 if (wdev->netdev &&
10479                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10480                                 wdev->netdev->ifindex))
10481                         goto nla_put_failure;
10482         }
10483
10484         data = nla_nest_start_noflag(skb, attr);
10485         if (!data)
10486                 goto nla_put_failure;
10487
10488         ((void **)skb->cb)[0] = rdev;
10489         ((void **)skb->cb)[1] = hdr;
10490         ((void **)skb->cb)[2] = data;
10491
10492         return skb;
10493
10494  nla_put_failure:
10495         kfree_skb(skb);
10496         return NULL;
10497 }
10498
10499 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10500                                            struct wireless_dev *wdev,
10501                                            enum nl80211_commands cmd,
10502                                            enum nl80211_attrs attr,
10503                                            unsigned int portid,
10504                                            int vendor_event_idx,
10505                                            int approxlen, gfp_t gfp)
10506 {
10507         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10508         const struct nl80211_vendor_cmd_info *info;
10509
10510         switch (cmd) {
10511         case NL80211_CMD_TESTMODE:
10512                 if (WARN_ON(vendor_event_idx != -1))
10513                         return NULL;
10514                 info = NULL;
10515                 break;
10516         case NL80211_CMD_VENDOR:
10517                 if (WARN_ON(vendor_event_idx < 0 ||
10518                             vendor_event_idx >= wiphy->n_vendor_events))
10519                         return NULL;
10520                 info = &wiphy->vendor_events[vendor_event_idx];
10521                 break;
10522         default:
10523                 WARN_ON(1);
10524                 return NULL;
10525         }
10526
10527         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10528                                            cmd, attr, info, gfp);
10529 }
10530 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10531
10532 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10533 {
10534         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10535         void *hdr = ((void **)skb->cb)[1];
10536         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10537         struct nlattr *data = ((void **)skb->cb)[2];
10538         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10539
10540         /* clear CB data for netlink core to own from now on */
10541         memset(skb->cb, 0, sizeof(skb->cb));
10542
10543         nla_nest_end(skb, data);
10544         genlmsg_end(skb, hdr);
10545
10546         if (nlhdr->nlmsg_pid) {
10547                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10548                                 nlhdr->nlmsg_pid);
10549         } else {
10550                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10551                         mcgrp = NL80211_MCGRP_VENDOR;
10552
10553                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10554                                         skb, 0, mcgrp, gfp);
10555         }
10556 }
10557 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10558
10559 #ifdef CONFIG_NL80211_TESTMODE
10560 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10561 {
10562         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10563         struct wireless_dev *wdev;
10564         int err;
10565
10566         lockdep_assert_held(&rdev->wiphy.mtx);
10567
10568         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
10569                                           info->attrs);
10570
10571         if (!rdev->ops->testmode_cmd)
10572                 return -EOPNOTSUPP;
10573
10574         if (IS_ERR(wdev)) {
10575                 err = PTR_ERR(wdev);
10576                 if (err != -EINVAL)
10577                         return err;
10578                 wdev = NULL;
10579         } else if (wdev->wiphy != &rdev->wiphy) {
10580                 return -EINVAL;
10581         }
10582
10583         if (!info->attrs[NL80211_ATTR_TESTDATA])
10584                 return -EINVAL;
10585
10586         rdev->cur_cmd_info = info;
10587         err = rdev_testmode_cmd(rdev, wdev,
10588                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10589                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10590         rdev->cur_cmd_info = NULL;
10591
10592         return err;
10593 }
10594
10595 static int nl80211_testmode_dump(struct sk_buff *skb,
10596                                  struct netlink_callback *cb)
10597 {
10598         struct cfg80211_registered_device *rdev;
10599         struct nlattr **attrbuf = NULL;
10600         int err;
10601         long phy_idx;
10602         void *data = NULL;
10603         int data_len = 0;
10604
10605         rtnl_lock();
10606
10607         if (cb->args[0]) {
10608                 /*
10609                  * 0 is a valid index, but not valid for args[0],
10610                  * so we need to offset by 1.
10611                  */
10612                 phy_idx = cb->args[0] - 1;
10613
10614                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10615                 if (!rdev) {
10616                         err = -ENOENT;
10617                         goto out_err;
10618                 }
10619         } else {
10620                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10621                                   GFP_KERNEL);
10622                 if (!attrbuf) {
10623                         err = -ENOMEM;
10624                         goto out_err;
10625                 }
10626
10627                 err = nlmsg_parse_deprecated(cb->nlh,
10628                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10629                                              attrbuf, nl80211_fam.maxattr,
10630                                              nl80211_policy, NULL);
10631                 if (err)
10632                         goto out_err;
10633
10634                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10635                 if (IS_ERR(rdev)) {
10636                         err = PTR_ERR(rdev);
10637                         goto out_err;
10638                 }
10639                 phy_idx = rdev->wiphy_idx;
10640
10641                 if (attrbuf[NL80211_ATTR_TESTDATA])
10642                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10643         }
10644
10645         if (cb->args[1]) {
10646                 data = nla_data((void *)cb->args[1]);
10647                 data_len = nla_len((void *)cb->args[1]);
10648         }
10649
10650         if (!rdev->ops->testmode_dump) {
10651                 err = -EOPNOTSUPP;
10652                 goto out_err;
10653         }
10654
10655         while (1) {
10656                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10657                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10658                                            NL80211_CMD_TESTMODE);
10659                 struct nlattr *tmdata;
10660
10661                 if (!hdr)
10662                         break;
10663
10664                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10665                         genlmsg_cancel(skb, hdr);
10666                         break;
10667                 }
10668
10669                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10670                 if (!tmdata) {
10671                         genlmsg_cancel(skb, hdr);
10672                         break;
10673                 }
10674                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10675                 nla_nest_end(skb, tmdata);
10676
10677                 if (err == -ENOBUFS || err == -ENOENT) {
10678                         genlmsg_cancel(skb, hdr);
10679                         break;
10680                 } else if (err) {
10681                         genlmsg_cancel(skb, hdr);
10682                         goto out_err;
10683                 }
10684
10685                 genlmsg_end(skb, hdr);
10686         }
10687
10688         err = skb->len;
10689         /* see above */
10690         cb->args[0] = phy_idx + 1;
10691  out_err:
10692         kfree(attrbuf);
10693         rtnl_unlock();
10694         return err;
10695 }
10696 #endif
10697
10698 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10699 {
10700         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10701         struct net_device *dev = info->user_ptr[1];
10702         struct cfg80211_connect_params connect;
10703         struct wiphy *wiphy;
10704         struct cfg80211_cached_keys *connkeys = NULL;
10705         u32 freq = 0;
10706         int err;
10707
10708         memset(&connect, 0, sizeof(connect));
10709
10710         if (!info->attrs[NL80211_ATTR_SSID] ||
10711             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10712                 return -EINVAL;
10713
10714         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10715                 connect.auth_type =
10716                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10717                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10718                                              NL80211_CMD_CONNECT))
10719                         return -EINVAL;
10720         } else
10721                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10722
10723         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10724
10725         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10726             !wiphy_ext_feature_isset(&rdev->wiphy,
10727                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10728                 return -EINVAL;
10729         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10730
10731         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10732                                       NL80211_MAX_NR_CIPHER_SUITES);
10733         if (err)
10734                 return err;
10735
10736         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10737             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10738                 return -EOPNOTSUPP;
10739
10740         wiphy = &rdev->wiphy;
10741
10742         connect.bg_scan_period = -1;
10743         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10744                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10745                 connect.bg_scan_period =
10746                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10747         }
10748
10749         if (info->attrs[NL80211_ATTR_MAC])
10750                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10751         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10752                 connect.bssid_hint =
10753                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10754         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10755         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10756
10757         if (info->attrs[NL80211_ATTR_IE]) {
10758                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10759                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10760         }
10761
10762         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10763                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10764                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10765                     !wiphy_ext_feature_isset(&rdev->wiphy,
10766                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10767                         return -EOPNOTSUPP;
10768         } else {
10769                 connect.mfp = NL80211_MFP_NO;
10770         }
10771
10772         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10773                 connect.prev_bssid =
10774                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10775
10776         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10777                 freq = MHZ_TO_KHZ(nla_get_u32(
10778                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10779         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10780                 freq +=
10781                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10782
10783         if (freq) {
10784                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10785                 if (!connect.channel)
10786                         return -EINVAL;
10787         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10788                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10789                 freq = MHZ_TO_KHZ(freq);
10790                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10791                 if (!connect.channel_hint)
10792                         return -EINVAL;
10793         }
10794
10795         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10796                 connect.edmg.channels =
10797                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10798
10799                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10800                         connect.edmg.bw_config =
10801                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10802         }
10803
10804         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10805                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10806                 if (IS_ERR(connkeys))
10807                         return PTR_ERR(connkeys);
10808         }
10809
10810         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10811                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10812
10813         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10814                 memcpy(&connect.ht_capa_mask,
10815                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10816                        sizeof(connect.ht_capa_mask));
10817
10818         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10819                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10820                         kfree_sensitive(connkeys);
10821                         return -EINVAL;
10822                 }
10823                 memcpy(&connect.ht_capa,
10824                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10825                        sizeof(connect.ht_capa));
10826         }
10827
10828         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10829                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10830
10831         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10832                 connect.flags |= ASSOC_REQ_DISABLE_HE;
10833
10834         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10835                 memcpy(&connect.vht_capa_mask,
10836                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10837                        sizeof(connect.vht_capa_mask));
10838
10839         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10840                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10841                         kfree_sensitive(connkeys);
10842                         return -EINVAL;
10843                 }
10844                 memcpy(&connect.vht_capa,
10845                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10846                        sizeof(connect.vht_capa));
10847         }
10848
10849         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10850                 if (!((rdev->wiphy.features &
10851                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10852                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10853                     !wiphy_ext_feature_isset(&rdev->wiphy,
10854                                              NL80211_EXT_FEATURE_RRM)) {
10855                         kfree_sensitive(connkeys);
10856                         return -EINVAL;
10857                 }
10858                 connect.flags |= ASSOC_REQ_USE_RRM;
10859         }
10860
10861         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10862         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10863                 kfree_sensitive(connkeys);
10864                 return -EOPNOTSUPP;
10865         }
10866
10867         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10868                 /* bss selection makes no sense if bssid is set */
10869                 if (connect.bssid) {
10870                         kfree_sensitive(connkeys);
10871                         return -EINVAL;
10872                 }
10873
10874                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10875                                        wiphy, &connect.bss_select);
10876                 if (err) {
10877                         kfree_sensitive(connkeys);
10878                         return err;
10879                 }
10880         }
10881
10882         if (wiphy_ext_feature_isset(&rdev->wiphy,
10883                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10884             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10885             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10886             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10887             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10888                 connect.fils_erp_username =
10889                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10890                 connect.fils_erp_username_len =
10891                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10892                 connect.fils_erp_realm =
10893                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10894                 connect.fils_erp_realm_len =
10895                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10896                 connect.fils_erp_next_seq_num =
10897                         nla_get_u16(
10898                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10899                 connect.fils_erp_rrk =
10900                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10901                 connect.fils_erp_rrk_len =
10902                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10903         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10904                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10905                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10906                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10907                 kfree_sensitive(connkeys);
10908                 return -EINVAL;
10909         }
10910
10911         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10912                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10913                         kfree_sensitive(connkeys);
10914                         GENL_SET_ERR_MSG(info,
10915                                          "external auth requires connection ownership");
10916                         return -EINVAL;
10917                 }
10918                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10919         }
10920
10921         wdev_lock(dev->ieee80211_ptr);
10922
10923         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10924                                connect.prev_bssid);
10925         if (err)
10926                 kfree_sensitive(connkeys);
10927
10928         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10929                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10930                 if (connect.bssid)
10931                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10932                                connect.bssid, ETH_ALEN);
10933                 else
10934                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10935         }
10936
10937         wdev_unlock(dev->ieee80211_ptr);
10938
10939         return err;
10940 }
10941
10942 static int nl80211_update_connect_params(struct sk_buff *skb,
10943                                          struct genl_info *info)
10944 {
10945         struct cfg80211_connect_params connect = {};
10946         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10947         struct net_device *dev = info->user_ptr[1];
10948         struct wireless_dev *wdev = dev->ieee80211_ptr;
10949         bool fils_sk_offload;
10950         u32 auth_type;
10951         u32 changed = 0;
10952         int ret;
10953
10954         if (!rdev->ops->update_connect_params)
10955                 return -EOPNOTSUPP;
10956
10957         if (info->attrs[NL80211_ATTR_IE]) {
10958                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10959                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10960                 changed |= UPDATE_ASSOC_IES;
10961         }
10962
10963         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10964                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10965
10966         /*
10967          * when driver supports fils-sk offload all attributes must be
10968          * provided. So the else covers "fils-sk-not-all" and
10969          * "no-fils-sk-any".
10970          */
10971         if (fils_sk_offload &&
10972             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10973             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10974             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10975             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10976                 connect.fils_erp_username =
10977                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10978                 connect.fils_erp_username_len =
10979                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10980                 connect.fils_erp_realm =
10981                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10982                 connect.fils_erp_realm_len =
10983                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10984                 connect.fils_erp_next_seq_num =
10985                         nla_get_u16(
10986                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10987                 connect.fils_erp_rrk =
10988                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10989                 connect.fils_erp_rrk_len =
10990                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10991                 changed |= UPDATE_FILS_ERP_INFO;
10992         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10993                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10994                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10995                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10996                 return -EINVAL;
10997         }
10998
10999         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
11000                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
11001                 if (!nl80211_valid_auth_type(rdev, auth_type,
11002                                              NL80211_CMD_CONNECT))
11003                         return -EINVAL;
11004
11005                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11006                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11007                         return -EINVAL;
11008
11009                 connect.auth_type = auth_type;
11010                 changed |= UPDATE_AUTH_TYPE;
11011         }
11012
11013         wdev_lock(dev->ieee80211_ptr);
11014         if (!wdev->current_bss)
11015                 ret = -ENOLINK;
11016         else
11017                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11018         wdev_unlock(dev->ieee80211_ptr);
11019
11020         return ret;
11021 }
11022
11023 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11024 {
11025         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11026         struct net_device *dev = info->user_ptr[1];
11027         u16 reason;
11028         int ret;
11029
11030         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11031             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11032                 return -EPERM;
11033
11034         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11035                 reason = WLAN_REASON_DEAUTH_LEAVING;
11036         else
11037                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11038
11039         if (reason == 0)
11040                 return -EINVAL;
11041
11042         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11043             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11044                 return -EOPNOTSUPP;
11045
11046         wdev_lock(dev->ieee80211_ptr);
11047         ret = cfg80211_disconnect(rdev, dev, reason, true);
11048         wdev_unlock(dev->ieee80211_ptr);
11049         return ret;
11050 }
11051
11052 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11053 {
11054         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11055         struct net *net;
11056         int err;
11057
11058         if (info->attrs[NL80211_ATTR_PID]) {
11059                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11060
11061                 net = get_net_ns_by_pid(pid);
11062         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11063                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11064
11065                 net = get_net_ns_by_fd(fd);
11066         } else {
11067                 return -EINVAL;
11068         }
11069
11070         if (IS_ERR(net))
11071                 return PTR_ERR(net);
11072
11073         err = 0;
11074
11075         /* check if anything to do */
11076         if (!net_eq(wiphy_net(&rdev->wiphy), net))
11077                 err = cfg80211_switch_netns(rdev, net);
11078
11079         put_net(net);
11080         return err;
11081 }
11082
11083 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11084 {
11085         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11086         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11087                         struct cfg80211_pmksa *pmksa) = NULL;
11088         struct net_device *dev = info->user_ptr[1];
11089         struct cfg80211_pmksa pmksa;
11090
11091         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11092
11093         if (!info->attrs[NL80211_ATTR_PMKID])
11094                 return -EINVAL;
11095
11096         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11097
11098         if (info->attrs[NL80211_ATTR_MAC]) {
11099                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11100         } else if (info->attrs[NL80211_ATTR_SSID] &&
11101                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11102                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11103                     info->attrs[NL80211_ATTR_PMK])) {
11104                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11105                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11106                 pmksa.cache_id =
11107                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11108         } else {
11109                 return -EINVAL;
11110         }
11111         if (info->attrs[NL80211_ATTR_PMK]) {
11112                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11113                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11114         }
11115
11116         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11117                 pmksa.pmk_lifetime =
11118                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11119
11120         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11121                 pmksa.pmk_reauth_threshold =
11122                         nla_get_u8(
11123                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11124
11125         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11126             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
11127             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
11128               wiphy_ext_feature_isset(&rdev->wiphy,
11129                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
11130                 return -EOPNOTSUPP;
11131
11132         switch (info->genlhdr->cmd) {
11133         case NL80211_CMD_SET_PMKSA:
11134                 rdev_ops = rdev->ops->set_pmksa;
11135                 break;
11136         case NL80211_CMD_DEL_PMKSA:
11137                 rdev_ops = rdev->ops->del_pmksa;
11138                 break;
11139         default:
11140                 WARN_ON(1);
11141                 break;
11142         }
11143
11144         if (!rdev_ops)
11145                 return -EOPNOTSUPP;
11146
11147         return rdev_ops(&rdev->wiphy, dev, &pmksa);
11148 }
11149
11150 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
11151 {
11152         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11153         struct net_device *dev = info->user_ptr[1];
11154
11155         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11156             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11157                 return -EOPNOTSUPP;
11158
11159         if (!rdev->ops->flush_pmksa)
11160                 return -EOPNOTSUPP;
11161
11162         return rdev_flush_pmksa(rdev, dev);
11163 }
11164
11165 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
11166 {
11167         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11168         struct net_device *dev = info->user_ptr[1];
11169         u8 action_code, dialog_token;
11170         u32 peer_capability = 0;
11171         u16 status_code;
11172         u8 *peer;
11173         bool initiator;
11174
11175         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11176             !rdev->ops->tdls_mgmt)
11177                 return -EOPNOTSUPP;
11178
11179         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
11180             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
11181             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
11182             !info->attrs[NL80211_ATTR_IE] ||
11183             !info->attrs[NL80211_ATTR_MAC])
11184                 return -EINVAL;
11185
11186         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11187         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
11188         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
11189         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
11190         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
11191         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
11192                 peer_capability =
11193                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
11194
11195         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
11196                               dialog_token, status_code, peer_capability,
11197                               initiator,
11198                               nla_data(info->attrs[NL80211_ATTR_IE]),
11199                               nla_len(info->attrs[NL80211_ATTR_IE]));
11200 }
11201
11202 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
11203 {
11204         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11205         struct net_device *dev = info->user_ptr[1];
11206         enum nl80211_tdls_operation operation;
11207         u8 *peer;
11208
11209         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11210             !rdev->ops->tdls_oper)
11211                 return -EOPNOTSUPP;
11212
11213         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
11214             !info->attrs[NL80211_ATTR_MAC])
11215                 return -EINVAL;
11216
11217         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
11218         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11219
11220         return rdev_tdls_oper(rdev, dev, peer, operation);
11221 }
11222
11223 static int nl80211_remain_on_channel(struct sk_buff *skb,
11224                                      struct genl_info *info)
11225 {
11226         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11227         struct wireless_dev *wdev = info->user_ptr[1];
11228         struct cfg80211_chan_def chandef;
11229         const struct cfg80211_chan_def *compat_chandef;
11230         struct sk_buff *msg;
11231         void *hdr;
11232         u64 cookie;
11233         u32 duration;
11234         int err;
11235
11236         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11237             !info->attrs[NL80211_ATTR_DURATION])
11238                 return -EINVAL;
11239
11240         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11241
11242         if (!rdev->ops->remain_on_channel ||
11243             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11244                 return -EOPNOTSUPP;
11245
11246         /*
11247          * We should be on that channel for at least a minimum amount of
11248          * time (10ms) but no longer than the driver supports.
11249          */
11250         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11251             duration > rdev->wiphy.max_remain_on_channel_duration)
11252                 return -EINVAL;
11253
11254         err = nl80211_parse_chandef(rdev, info, &chandef);
11255         if (err)
11256                 return err;
11257
11258         wdev_lock(wdev);
11259         if (!cfg80211_off_channel_oper_allowed(wdev) &&
11260             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11261                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11262                                                              &chandef);
11263                 if (compat_chandef != &chandef) {
11264                         wdev_unlock(wdev);
11265                         return -EBUSY;
11266                 }
11267         }
11268         wdev_unlock(wdev);
11269
11270         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11271         if (!msg)
11272                 return -ENOMEM;
11273
11274         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11275                              NL80211_CMD_REMAIN_ON_CHANNEL);
11276         if (!hdr) {
11277                 err = -ENOBUFS;
11278                 goto free_msg;
11279         }
11280
11281         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11282                                      duration, &cookie);
11283
11284         if (err)
11285                 goto free_msg;
11286
11287         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11288                               NL80211_ATTR_PAD))
11289                 goto nla_put_failure;
11290
11291         genlmsg_end(msg, hdr);
11292
11293         return genlmsg_reply(msg, info);
11294
11295  nla_put_failure:
11296         err = -ENOBUFS;
11297  free_msg:
11298         nlmsg_free(msg);
11299         return err;
11300 }
11301
11302 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11303                                             struct genl_info *info)
11304 {
11305         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11306         struct wireless_dev *wdev = info->user_ptr[1];
11307         u64 cookie;
11308
11309         if (!info->attrs[NL80211_ATTR_COOKIE])
11310                 return -EINVAL;
11311
11312         if (!rdev->ops->cancel_remain_on_channel)
11313                 return -EOPNOTSUPP;
11314
11315         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11316
11317         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11318 }
11319
11320 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11321                                        struct genl_info *info)
11322 {
11323         struct cfg80211_bitrate_mask mask;
11324         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11325         struct net_device *dev = info->user_ptr[1];
11326         int err;
11327
11328         if (!rdev->ops->set_bitrate_mask)
11329                 return -EOPNOTSUPP;
11330
11331         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11332                                             NL80211_ATTR_TX_RATES, &mask,
11333                                             dev, true);
11334         if (err)
11335                 return err;
11336
11337         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11338 }
11339
11340 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11341 {
11342         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11343         struct wireless_dev *wdev = info->user_ptr[1];
11344         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11345
11346         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11347                 return -EINVAL;
11348
11349         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11350                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11351
11352         switch (wdev->iftype) {
11353         case NL80211_IFTYPE_STATION:
11354         case NL80211_IFTYPE_ADHOC:
11355         case NL80211_IFTYPE_P2P_CLIENT:
11356         case NL80211_IFTYPE_AP:
11357         case NL80211_IFTYPE_AP_VLAN:
11358         case NL80211_IFTYPE_MESH_POINT:
11359         case NL80211_IFTYPE_P2P_GO:
11360         case NL80211_IFTYPE_P2P_DEVICE:
11361                 break;
11362         case NL80211_IFTYPE_NAN:
11363         default:
11364                 return -EOPNOTSUPP;
11365         }
11366
11367         /* not much point in registering if we can't reply */
11368         if (!rdev->ops->mgmt_tx)
11369                 return -EOPNOTSUPP;
11370
11371         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11372             !wiphy_ext_feature_isset(&rdev->wiphy,
11373                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11374                 GENL_SET_ERR_MSG(info,
11375                                  "multicast RX registrations are not supported");
11376                 return -EOPNOTSUPP;
11377         }
11378
11379         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11380                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11381                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11382                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11383                                            info->extack);
11384 }
11385
11386 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11387 {
11388         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11389         struct wireless_dev *wdev = info->user_ptr[1];
11390         struct cfg80211_chan_def chandef;
11391         int err;
11392         void *hdr = NULL;
11393         u64 cookie;
11394         struct sk_buff *msg = NULL;
11395         struct cfg80211_mgmt_tx_params params = {
11396                 .dont_wait_for_ack =
11397                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11398         };
11399
11400         if (!info->attrs[NL80211_ATTR_FRAME])
11401                 return -EINVAL;
11402
11403         if (!rdev->ops->mgmt_tx)
11404                 return -EOPNOTSUPP;
11405
11406         switch (wdev->iftype) {
11407         case NL80211_IFTYPE_P2P_DEVICE:
11408                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11409                         return -EINVAL;
11410                 break;
11411         case NL80211_IFTYPE_STATION:
11412         case NL80211_IFTYPE_ADHOC:
11413         case NL80211_IFTYPE_P2P_CLIENT:
11414         case NL80211_IFTYPE_AP:
11415         case NL80211_IFTYPE_AP_VLAN:
11416         case NL80211_IFTYPE_MESH_POINT:
11417         case NL80211_IFTYPE_P2P_GO:
11418                 break;
11419         case NL80211_IFTYPE_NAN:
11420         default:
11421                 return -EOPNOTSUPP;
11422         }
11423
11424         if (info->attrs[NL80211_ATTR_DURATION]) {
11425                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11426                         return -EINVAL;
11427                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11428
11429                 /*
11430                  * We should wait on the channel for at least a minimum amount
11431                  * of time (10ms) but no longer than the driver supports.
11432                  */
11433                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11434                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
11435                         return -EINVAL;
11436         }
11437
11438         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11439
11440         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11441                 return -EINVAL;
11442
11443         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11444
11445         /* get the channel if any has been specified, otherwise pass NULL to
11446          * the driver. The latter will use the current one
11447          */
11448         chandef.chan = NULL;
11449         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11450                 err = nl80211_parse_chandef(rdev, info, &chandef);
11451                 if (err)
11452                         return err;
11453         }
11454
11455         if (!chandef.chan && params.offchan)
11456                 return -EINVAL;
11457
11458         wdev_lock(wdev);
11459         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11460                 wdev_unlock(wdev);
11461                 return -EBUSY;
11462         }
11463         wdev_unlock(wdev);
11464
11465         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11466         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11467
11468         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11469                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11470                 int i;
11471
11472                 if (len % sizeof(u16))
11473                         return -EINVAL;
11474
11475                 params.n_csa_offsets = len / sizeof(u16);
11476                 params.csa_offsets =
11477                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11478
11479                 /* check that all the offsets fit the frame */
11480                 for (i = 0; i < params.n_csa_offsets; i++) {
11481                         if (params.csa_offsets[i] >= params.len)
11482                                 return -EINVAL;
11483                 }
11484         }
11485
11486         if (!params.dont_wait_for_ack) {
11487                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11488                 if (!msg)
11489                         return -ENOMEM;
11490
11491                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11492                                      NL80211_CMD_FRAME);
11493                 if (!hdr) {
11494                         err = -ENOBUFS;
11495                         goto free_msg;
11496                 }
11497         }
11498
11499         params.chan = chandef.chan;
11500         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
11501         if (err)
11502                 goto free_msg;
11503
11504         if (msg) {
11505                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11506                                       NL80211_ATTR_PAD))
11507                         goto nla_put_failure;
11508
11509                 genlmsg_end(msg, hdr);
11510                 return genlmsg_reply(msg, info);
11511         }
11512
11513         return 0;
11514
11515  nla_put_failure:
11516         err = -ENOBUFS;
11517  free_msg:
11518         nlmsg_free(msg);
11519         return err;
11520 }
11521
11522 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11523 {
11524         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11525         struct wireless_dev *wdev = info->user_ptr[1];
11526         u64 cookie;
11527
11528         if (!info->attrs[NL80211_ATTR_COOKIE])
11529                 return -EINVAL;
11530
11531         if (!rdev->ops->mgmt_tx_cancel_wait)
11532                 return -EOPNOTSUPP;
11533
11534         switch (wdev->iftype) {
11535         case NL80211_IFTYPE_STATION:
11536         case NL80211_IFTYPE_ADHOC:
11537         case NL80211_IFTYPE_P2P_CLIENT:
11538         case NL80211_IFTYPE_AP:
11539         case NL80211_IFTYPE_AP_VLAN:
11540         case NL80211_IFTYPE_P2P_GO:
11541         case NL80211_IFTYPE_P2P_DEVICE:
11542                 break;
11543         case NL80211_IFTYPE_NAN:
11544         default:
11545                 return -EOPNOTSUPP;
11546         }
11547
11548         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11549
11550         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11551 }
11552
11553 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11554 {
11555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11556         struct wireless_dev *wdev;
11557         struct net_device *dev = info->user_ptr[1];
11558         u8 ps_state;
11559         bool state;
11560         int err;
11561
11562         if (!info->attrs[NL80211_ATTR_PS_STATE])
11563                 return -EINVAL;
11564
11565         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11566
11567         wdev = dev->ieee80211_ptr;
11568
11569         if (!rdev->ops->set_power_mgmt)
11570                 return -EOPNOTSUPP;
11571
11572         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11573
11574         if (state == wdev->ps)
11575                 return 0;
11576
11577         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11578         if (!err)
11579                 wdev->ps = state;
11580         return err;
11581 }
11582
11583 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11584 {
11585         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11586         enum nl80211_ps_state ps_state;
11587         struct wireless_dev *wdev;
11588         struct net_device *dev = info->user_ptr[1];
11589         struct sk_buff *msg;
11590         void *hdr;
11591         int err;
11592
11593         wdev = dev->ieee80211_ptr;
11594
11595         if (!rdev->ops->set_power_mgmt)
11596                 return -EOPNOTSUPP;
11597
11598         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11599         if (!msg)
11600                 return -ENOMEM;
11601
11602         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11603                              NL80211_CMD_GET_POWER_SAVE);
11604         if (!hdr) {
11605                 err = -ENOBUFS;
11606                 goto free_msg;
11607         }
11608
11609         if (wdev->ps)
11610                 ps_state = NL80211_PS_ENABLED;
11611         else
11612                 ps_state = NL80211_PS_DISABLED;
11613
11614         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11615                 goto nla_put_failure;
11616
11617         genlmsg_end(msg, hdr);
11618         return genlmsg_reply(msg, info);
11619
11620  nla_put_failure:
11621         err = -ENOBUFS;
11622  free_msg:
11623         nlmsg_free(msg);
11624         return err;
11625 }
11626
11627 static const struct nla_policy
11628 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11629         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11630         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11631         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11632         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11633         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11634         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11635         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11636 };
11637
11638 static int nl80211_set_cqm_txe(struct genl_info *info,
11639                                u32 rate, u32 pkts, u32 intvl)
11640 {
11641         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11642         struct net_device *dev = info->user_ptr[1];
11643         struct wireless_dev *wdev = dev->ieee80211_ptr;
11644
11645         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11646                 return -EINVAL;
11647
11648         if (!rdev->ops->set_cqm_txe_config)
11649                 return -EOPNOTSUPP;
11650
11651         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11652             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11653                 return -EOPNOTSUPP;
11654
11655         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11656 }
11657
11658 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11659                                     struct net_device *dev)
11660 {
11661         struct wireless_dev *wdev = dev->ieee80211_ptr;
11662         s32 last, low, high;
11663         u32 hyst;
11664         int i, n, low_index;
11665         int err;
11666
11667         /* RSSI reporting disabled? */
11668         if (!wdev->cqm_config)
11669                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11670
11671         /*
11672          * Obtain current RSSI value if possible, if not and no RSSI threshold
11673          * event has been received yet, we should receive an event after a
11674          * connection is established and enough beacons received to calculate
11675          * the average.
11676          */
11677         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11678             rdev->ops->get_station) {
11679                 struct station_info sinfo = {};
11680                 u8 *mac_addr;
11681
11682                 mac_addr = wdev->current_bss->pub.bssid;
11683
11684                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11685                 if (err)
11686                         return err;
11687
11688                 cfg80211_sinfo_release_content(&sinfo);
11689                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11690                         wdev->cqm_config->last_rssi_event_value =
11691                                 (s8) sinfo.rx_beacon_signal_avg;
11692         }
11693
11694         last = wdev->cqm_config->last_rssi_event_value;
11695         hyst = wdev->cqm_config->rssi_hyst;
11696         n = wdev->cqm_config->n_rssi_thresholds;
11697
11698         for (i = 0; i < n; i++) {
11699                 i = array_index_nospec(i, n);
11700                 if (last < wdev->cqm_config->rssi_thresholds[i])
11701                         break;
11702         }
11703
11704         low_index = i - 1;
11705         if (low_index >= 0) {
11706                 low_index = array_index_nospec(low_index, n);
11707                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11708         } else {
11709                 low = S32_MIN;
11710         }
11711         if (i < n) {
11712                 i = array_index_nospec(i, n);
11713                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11714         } else {
11715                 high = S32_MAX;
11716         }
11717
11718         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11719 }
11720
11721 static int nl80211_set_cqm_rssi(struct genl_info *info,
11722                                 const s32 *thresholds, int n_thresholds,
11723                                 u32 hysteresis)
11724 {
11725         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11726         struct net_device *dev = info->user_ptr[1];
11727         struct wireless_dev *wdev = dev->ieee80211_ptr;
11728         int i, err;
11729         s32 prev = S32_MIN;
11730
11731         /* Check all values negative and sorted */
11732         for (i = 0; i < n_thresholds; i++) {
11733                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11734                         return -EINVAL;
11735
11736                 prev = thresholds[i];
11737         }
11738
11739         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11740             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11741                 return -EOPNOTSUPP;
11742
11743         wdev_lock(wdev);
11744         cfg80211_cqm_config_free(wdev);
11745         wdev_unlock(wdev);
11746
11747         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11748                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11749                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11750
11751                 return rdev_set_cqm_rssi_config(rdev, dev,
11752                                                 thresholds[0], hysteresis);
11753         }
11754
11755         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11756                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11757                 return -EOPNOTSUPP;
11758
11759         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11760                 n_thresholds = 0;
11761
11762         wdev_lock(wdev);
11763         if (n_thresholds) {
11764                 struct cfg80211_cqm_config *cqm_config;
11765
11766                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11767                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11768                 if (!cqm_config) {
11769                         err = -ENOMEM;
11770                         goto unlock;
11771                 }
11772
11773                 cqm_config->rssi_hyst = hysteresis;
11774                 cqm_config->n_rssi_thresholds = n_thresholds;
11775                 memcpy(cqm_config->rssi_thresholds, thresholds,
11776                        n_thresholds * sizeof(s32));
11777
11778                 wdev->cqm_config = cqm_config;
11779         }
11780
11781         err = cfg80211_cqm_rssi_update(rdev, dev);
11782
11783 unlock:
11784         wdev_unlock(wdev);
11785
11786         return err;
11787 }
11788
11789 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11790 {
11791         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11792         struct nlattr *cqm;
11793         int err;
11794
11795         cqm = info->attrs[NL80211_ATTR_CQM];
11796         if (!cqm)
11797                 return -EINVAL;
11798
11799         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11800                                           nl80211_attr_cqm_policy,
11801                                           info->extack);
11802         if (err)
11803                 return err;
11804
11805         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11806             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11807                 const s32 *thresholds =
11808                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11809                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11810                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11811
11812                 if (len % 4)
11813                         return -EINVAL;
11814
11815                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11816                                             hysteresis);
11817         }
11818
11819         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11820             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11821             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11822                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11823                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11824                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11825
11826                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11827         }
11828
11829         return -EINVAL;
11830 }
11831
11832 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11833 {
11834         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11835         struct net_device *dev = info->user_ptr[1];
11836         struct ocb_setup setup = {};
11837         int err;
11838
11839         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11840         if (err)
11841                 return err;
11842
11843         return cfg80211_join_ocb(rdev, dev, &setup);
11844 }
11845
11846 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11847 {
11848         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11849         struct net_device *dev = info->user_ptr[1];
11850
11851         return cfg80211_leave_ocb(rdev, dev);
11852 }
11853
11854 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11855 {
11856         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11857         struct net_device *dev = info->user_ptr[1];
11858         struct mesh_config cfg;
11859         struct mesh_setup setup;
11860         int err;
11861
11862         /* start with default */
11863         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11864         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11865
11866         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11867                 /* and parse parameters if given */
11868                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11869                 if (err)
11870                         return err;
11871         }
11872
11873         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11874             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11875                 return -EINVAL;
11876
11877         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11878         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11879
11880         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11881             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11882                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11883                         return -EINVAL;
11884
11885         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11886                 setup.beacon_interval =
11887                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11888
11889                 err = cfg80211_validate_beacon_int(rdev,
11890                                                    NL80211_IFTYPE_MESH_POINT,
11891                                                    setup.beacon_interval);
11892                 if (err)
11893                         return err;
11894         }
11895
11896         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11897                 setup.dtim_period =
11898                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11899                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11900                         return -EINVAL;
11901         }
11902
11903         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11904                 /* parse additional setup parameters if given */
11905                 err = nl80211_parse_mesh_setup(info, &setup);
11906                 if (err)
11907                         return err;
11908         }
11909
11910         if (setup.user_mpm)
11911                 cfg.auto_open_plinks = false;
11912
11913         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11914                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11915                 if (err)
11916                         return err;
11917         } else {
11918                 /* __cfg80211_join_mesh() will sort it out */
11919                 setup.chandef.chan = NULL;
11920         }
11921
11922         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11923                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11924                 int n_rates =
11925                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11926                 struct ieee80211_supported_band *sband;
11927
11928                 if (!setup.chandef.chan)
11929                         return -EINVAL;
11930
11931                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11932
11933                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11934                                              &setup.basic_rates);
11935                 if (err)
11936                         return err;
11937         }
11938
11939         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11940                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11941                                                     NL80211_ATTR_TX_RATES,
11942                                                     &setup.beacon_rate,
11943                                                     dev, false);
11944                 if (err)
11945                         return err;
11946
11947                 if (!setup.chandef.chan)
11948                         return -EINVAL;
11949
11950                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11951                                               &setup.beacon_rate);
11952                 if (err)
11953                         return err;
11954         }
11955
11956         setup.userspace_handles_dfs =
11957                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11958
11959         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11960                 int r = validate_pae_over_nl80211(rdev, info);
11961
11962                 if (r < 0)
11963                         return r;
11964
11965                 setup.control_port_over_nl80211 = true;
11966         }
11967
11968         wdev_lock(dev->ieee80211_ptr);
11969         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11970         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11971                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11972         wdev_unlock(dev->ieee80211_ptr);
11973
11974         return err;
11975 }
11976
11977 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11978 {
11979         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11980         struct net_device *dev = info->user_ptr[1];
11981
11982         return cfg80211_leave_mesh(rdev, dev);
11983 }
11984
11985 #ifdef CONFIG_PM
11986 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11987                                         struct cfg80211_registered_device *rdev)
11988 {
11989         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11990         struct nlattr *nl_pats, *nl_pat;
11991         int i, pat_len;
11992
11993         if (!wowlan->n_patterns)
11994                 return 0;
11995
11996         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11997         if (!nl_pats)
11998                 return -ENOBUFS;
11999
12000         for (i = 0; i < wowlan->n_patterns; i++) {
12001                 nl_pat = nla_nest_start_noflag(msg, i + 1);
12002                 if (!nl_pat)
12003                         return -ENOBUFS;
12004                 pat_len = wowlan->patterns[i].pattern_len;
12005                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
12006                             wowlan->patterns[i].mask) ||
12007                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12008                             wowlan->patterns[i].pattern) ||
12009                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12010                                 wowlan->patterns[i].pkt_offset))
12011                         return -ENOBUFS;
12012                 nla_nest_end(msg, nl_pat);
12013         }
12014         nla_nest_end(msg, nl_pats);
12015
12016         return 0;
12017 }
12018
12019 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
12020                                    struct cfg80211_wowlan_tcp *tcp)
12021 {
12022         struct nlattr *nl_tcp;
12023
12024         if (!tcp)
12025                 return 0;
12026
12027         nl_tcp = nla_nest_start_noflag(msg,
12028                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12029         if (!nl_tcp)
12030                 return -ENOBUFS;
12031
12032         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12033             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12034             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12035             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12036             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12037             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12038                     tcp->payload_len, tcp->payload) ||
12039             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12040                         tcp->data_interval) ||
12041             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12042                     tcp->wake_len, tcp->wake_data) ||
12043             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12044                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12045                 return -ENOBUFS;
12046
12047         if (tcp->payload_seq.len &&
12048             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12049                     sizeof(tcp->payload_seq), &tcp->payload_seq))
12050                 return -ENOBUFS;
12051
12052         if (tcp->payload_tok.len &&
12053             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12054                     sizeof(tcp->payload_tok) + tcp->tokens_size,
12055                     &tcp->payload_tok))
12056                 return -ENOBUFS;
12057
12058         nla_nest_end(msg, nl_tcp);
12059
12060         return 0;
12061 }
12062
12063 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12064                                   struct cfg80211_sched_scan_request *req)
12065 {
12066         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12067         int i;
12068
12069         if (!req)
12070                 return 0;
12071
12072         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12073         if (!nd)
12074                 return -ENOBUFS;
12075
12076         if (req->n_scan_plans == 1 &&
12077             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12078                         req->scan_plans[0].interval * 1000))
12079                 return -ENOBUFS;
12080
12081         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12082                 return -ENOBUFS;
12083
12084         if (req->relative_rssi_set) {
12085                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12086
12087                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12088                                req->relative_rssi))
12089                         return -ENOBUFS;
12090
12091                 rssi_adjust.band = req->rssi_adjust.band;
12092                 rssi_adjust.delta = req->rssi_adjust.delta;
12093                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
12094                             sizeof(rssi_adjust), &rssi_adjust))
12095                         return -ENOBUFS;
12096         }
12097
12098         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12099         if (!freqs)
12100                 return -ENOBUFS;
12101
12102         for (i = 0; i < req->n_channels; i++) {
12103                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12104                         return -ENOBUFS;
12105         }
12106
12107         nla_nest_end(msg, freqs);
12108
12109         if (req->n_match_sets) {
12110                 matches = nla_nest_start_noflag(msg,
12111                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
12112                 if (!matches)
12113                         return -ENOBUFS;
12114
12115                 for (i = 0; i < req->n_match_sets; i++) {
12116                         match = nla_nest_start_noflag(msg, i);
12117                         if (!match)
12118                                 return -ENOBUFS;
12119
12120                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
12121                                     req->match_sets[i].ssid.ssid_len,
12122                                     req->match_sets[i].ssid.ssid))
12123                                 return -ENOBUFS;
12124                         nla_nest_end(msg, match);
12125                 }
12126                 nla_nest_end(msg, matches);
12127         }
12128
12129         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
12130         if (!scan_plans)
12131                 return -ENOBUFS;
12132
12133         for (i = 0; i < req->n_scan_plans; i++) {
12134                 scan_plan = nla_nest_start_noflag(msg, i + 1);
12135                 if (!scan_plan)
12136                         return -ENOBUFS;
12137
12138                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
12139                                 req->scan_plans[i].interval) ||
12140                     (req->scan_plans[i].iterations &&
12141                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
12142                                  req->scan_plans[i].iterations)))
12143                         return -ENOBUFS;
12144                 nla_nest_end(msg, scan_plan);
12145         }
12146         nla_nest_end(msg, scan_plans);
12147
12148         nla_nest_end(msg, nd);
12149
12150         return 0;
12151 }
12152
12153 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
12154 {
12155         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12156         struct sk_buff *msg;
12157         void *hdr;
12158         u32 size = NLMSG_DEFAULT_SIZE;
12159
12160         if (!rdev->wiphy.wowlan)
12161                 return -EOPNOTSUPP;
12162
12163         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
12164                 /* adjust size to have room for all the data */
12165                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
12166                         rdev->wiphy.wowlan_config->tcp->payload_len +
12167                         rdev->wiphy.wowlan_config->tcp->wake_len +
12168                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
12169         }
12170
12171         msg = nlmsg_new(size, GFP_KERNEL);
12172         if (!msg)
12173                 return -ENOMEM;
12174
12175         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12176                              NL80211_CMD_GET_WOWLAN);
12177         if (!hdr)
12178                 goto nla_put_failure;
12179
12180         if (rdev->wiphy.wowlan_config) {
12181                 struct nlattr *nl_wowlan;
12182
12183                 nl_wowlan = nla_nest_start_noflag(msg,
12184                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
12185                 if (!nl_wowlan)
12186                         goto nla_put_failure;
12187
12188                 if ((rdev->wiphy.wowlan_config->any &&
12189                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
12190                     (rdev->wiphy.wowlan_config->disconnect &&
12191                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
12192                     (rdev->wiphy.wowlan_config->magic_pkt &&
12193                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
12194                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
12195                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
12196                     (rdev->wiphy.wowlan_config->eap_identity_req &&
12197                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
12198                     (rdev->wiphy.wowlan_config->four_way_handshake &&
12199                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
12200                     (rdev->wiphy.wowlan_config->rfkill_release &&
12201                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
12202                         goto nla_put_failure;
12203
12204                 if (nl80211_send_wowlan_patterns(msg, rdev))
12205                         goto nla_put_failure;
12206
12207                 if (nl80211_send_wowlan_tcp(msg,
12208                                             rdev->wiphy.wowlan_config->tcp))
12209                         goto nla_put_failure;
12210
12211                 if (nl80211_send_wowlan_nd(
12212                             msg,
12213                             rdev->wiphy.wowlan_config->nd_config))
12214                         goto nla_put_failure;
12215
12216                 nla_nest_end(msg, nl_wowlan);
12217         }
12218
12219         genlmsg_end(msg, hdr);
12220         return genlmsg_reply(msg, info);
12221
12222 nla_put_failure:
12223         nlmsg_free(msg);
12224         return -ENOBUFS;
12225 }
12226
12227 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
12228                                     struct nlattr *attr,
12229                                     struct cfg80211_wowlan *trig)
12230 {
12231         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
12232         struct cfg80211_wowlan_tcp *cfg;
12233         struct nl80211_wowlan_tcp_data_token *tok = NULL;
12234         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
12235         u32 size;
12236         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
12237         int err, port;
12238
12239         if (!rdev->wiphy.wowlan->tcp)
12240                 return -EINVAL;
12241
12242         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12243                                           nl80211_wowlan_tcp_policy, NULL);
12244         if (err)
12245                 return err;
12246
12247         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12248             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12249             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12250             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12251             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12252             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12253             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12254             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12255                 return -EINVAL;
12256
12257         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12258         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12259                 return -EINVAL;
12260
12261         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12262                         rdev->wiphy.wowlan->tcp->data_interval_max ||
12263             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12264                 return -EINVAL;
12265
12266         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12267         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12268                 return -EINVAL;
12269
12270         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12271         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12272                 return -EINVAL;
12273
12274         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12275                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12276
12277                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12278                 tokens_size = tokln - sizeof(*tok);
12279
12280                 if (!tok->len || tokens_size % tok->len)
12281                         return -EINVAL;
12282                 if (!rdev->wiphy.wowlan->tcp->tok)
12283                         return -EINVAL;
12284                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12285                         return -EINVAL;
12286                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12287                         return -EINVAL;
12288                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12289                         return -EINVAL;
12290                 if (tok->offset + tok->len > data_size)
12291                         return -EINVAL;
12292         }
12293
12294         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12295                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12296                 if (!rdev->wiphy.wowlan->tcp->seq)
12297                         return -EINVAL;
12298                 if (seq->len == 0 || seq->len > 4)
12299                         return -EINVAL;
12300                 if (seq->len + seq->offset > data_size)
12301                         return -EINVAL;
12302         }
12303
12304         size = sizeof(*cfg);
12305         size += data_size;
12306         size += wake_size + wake_mask_size;
12307         size += tokens_size;
12308
12309         cfg = kzalloc(size, GFP_KERNEL);
12310         if (!cfg)
12311                 return -ENOMEM;
12312         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12313         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12314         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12315                ETH_ALEN);
12316         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12317                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12318         else
12319                 port = 0;
12320 #ifdef CONFIG_INET
12321         /* allocate a socket and port for it and use it */
12322         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12323                             IPPROTO_TCP, &cfg->sock, 1);
12324         if (err) {
12325                 kfree(cfg);
12326                 return err;
12327         }
12328         if (inet_csk_get_port(cfg->sock->sk, port)) {
12329                 sock_release(cfg->sock);
12330                 kfree(cfg);
12331                 return -EADDRINUSE;
12332         }
12333         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12334 #else
12335         if (!port) {
12336                 kfree(cfg);
12337                 return -EINVAL;
12338         }
12339         cfg->src_port = port;
12340 #endif
12341
12342         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12343         cfg->payload_len = data_size;
12344         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12345         memcpy((void *)cfg->payload,
12346                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12347                data_size);
12348         if (seq)
12349                 cfg->payload_seq = *seq;
12350         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12351         cfg->wake_len = wake_size;
12352         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12353         memcpy((void *)cfg->wake_data,
12354                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12355                wake_size);
12356         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12357                          data_size + wake_size;
12358         memcpy((void *)cfg->wake_mask,
12359                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12360                wake_mask_size);
12361         if (tok) {
12362                 cfg->tokens_size = tokens_size;
12363                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12364         }
12365
12366         trig->tcp = cfg;
12367
12368         return 0;
12369 }
12370
12371 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12372                                    const struct wiphy_wowlan_support *wowlan,
12373                                    struct nlattr *attr,
12374                                    struct cfg80211_wowlan *trig)
12375 {
12376         struct nlattr **tb;
12377         int err;
12378
12379         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12380         if (!tb)
12381                 return -ENOMEM;
12382
12383         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12384                 err = -EOPNOTSUPP;
12385                 goto out;
12386         }
12387
12388         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12389                                           nl80211_policy, NULL);
12390         if (err)
12391                 goto out;
12392
12393         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12394                                                    wowlan->max_nd_match_sets);
12395         err = PTR_ERR_OR_ZERO(trig->nd_config);
12396         if (err)
12397                 trig->nd_config = NULL;
12398
12399 out:
12400         kfree(tb);
12401         return err;
12402 }
12403
12404 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12405 {
12406         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12407         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12408         struct cfg80211_wowlan new_triggers = {};
12409         struct cfg80211_wowlan *ntrig;
12410         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12411         int err, i;
12412         bool prev_enabled = rdev->wiphy.wowlan_config;
12413         bool regular = false;
12414
12415         if (!wowlan)
12416                 return -EOPNOTSUPP;
12417
12418         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12419                 cfg80211_rdev_free_wowlan(rdev);
12420                 rdev->wiphy.wowlan_config = NULL;
12421                 goto set_wakeup;
12422         }
12423
12424         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12425                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12426                                           nl80211_wowlan_policy, info->extack);
12427         if (err)
12428                 return err;
12429
12430         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12431                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12432                         return -EINVAL;
12433                 new_triggers.any = true;
12434         }
12435
12436         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12437                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12438                         return -EINVAL;
12439                 new_triggers.disconnect = true;
12440                 regular = true;
12441         }
12442
12443         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12444                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12445                         return -EINVAL;
12446                 new_triggers.magic_pkt = true;
12447                 regular = true;
12448         }
12449
12450         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12451                 return -EINVAL;
12452
12453         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12454                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12455                         return -EINVAL;
12456                 new_triggers.gtk_rekey_failure = true;
12457                 regular = true;
12458         }
12459
12460         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12461                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12462                         return -EINVAL;
12463                 new_triggers.eap_identity_req = true;
12464                 regular = true;
12465         }
12466
12467         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12468                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12469                         return -EINVAL;
12470                 new_triggers.four_way_handshake = true;
12471                 regular = true;
12472         }
12473
12474         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12475                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12476                         return -EINVAL;
12477                 new_triggers.rfkill_release = true;
12478                 regular = true;
12479         }
12480
12481         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12482                 struct nlattr *pat;
12483                 int n_patterns = 0;
12484                 int rem, pat_len, mask_len, pkt_offset;
12485                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12486
12487                 regular = true;
12488
12489                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12490                                     rem)
12491                         n_patterns++;
12492                 if (n_patterns > wowlan->n_patterns)
12493                         return -EINVAL;
12494
12495                 new_triggers.patterns = kcalloc(n_patterns,
12496                                                 sizeof(new_triggers.patterns[0]),
12497                                                 GFP_KERNEL);
12498                 if (!new_triggers.patterns)
12499                         return -ENOMEM;
12500
12501                 new_triggers.n_patterns = n_patterns;
12502                 i = 0;
12503
12504                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12505                                     rem) {
12506                         u8 *mask_pat;
12507
12508                         err = nla_parse_nested_deprecated(pat_tb,
12509                                                           MAX_NL80211_PKTPAT,
12510                                                           pat,
12511                                                           nl80211_packet_pattern_policy,
12512                                                           info->extack);
12513                         if (err)
12514                                 goto error;
12515
12516                         err = -EINVAL;
12517                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
12518                             !pat_tb[NL80211_PKTPAT_PATTERN])
12519                                 goto error;
12520                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12521                         mask_len = DIV_ROUND_UP(pat_len, 8);
12522                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12523                                 goto error;
12524                         if (pat_len > wowlan->pattern_max_len ||
12525                             pat_len < wowlan->pattern_min_len)
12526                                 goto error;
12527
12528                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
12529                                 pkt_offset = 0;
12530                         else
12531                                 pkt_offset = nla_get_u32(
12532                                         pat_tb[NL80211_PKTPAT_OFFSET]);
12533                         if (pkt_offset > wowlan->max_pkt_offset)
12534                                 goto error;
12535                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12536
12537                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12538                         if (!mask_pat) {
12539                                 err = -ENOMEM;
12540                                 goto error;
12541                         }
12542                         new_triggers.patterns[i].mask = mask_pat;
12543                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12544                                mask_len);
12545                         mask_pat += mask_len;
12546                         new_triggers.patterns[i].pattern = mask_pat;
12547                         new_triggers.patterns[i].pattern_len = pat_len;
12548                         memcpy(mask_pat,
12549                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12550                                pat_len);
12551                         i++;
12552                 }
12553         }
12554
12555         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12556                 regular = true;
12557                 err = nl80211_parse_wowlan_tcp(
12558                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12559                         &new_triggers);
12560                 if (err)
12561                         goto error;
12562         }
12563
12564         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12565                 regular = true;
12566                 err = nl80211_parse_wowlan_nd(
12567                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12568                         &new_triggers);
12569                 if (err)
12570                         goto error;
12571         }
12572
12573         /* The 'any' trigger means the device continues operating more or less
12574          * as in its normal operation mode and wakes up the host on most of the
12575          * normal interrupts (like packet RX, ...)
12576          * It therefore makes little sense to combine with the more constrained
12577          * wakeup trigger modes.
12578          */
12579         if (new_triggers.any && regular) {
12580                 err = -EINVAL;
12581                 goto error;
12582         }
12583
12584         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12585         if (!ntrig) {
12586                 err = -ENOMEM;
12587                 goto error;
12588         }
12589         cfg80211_rdev_free_wowlan(rdev);
12590         rdev->wiphy.wowlan_config = ntrig;
12591
12592  set_wakeup:
12593         if (rdev->ops->set_wakeup &&
12594             prev_enabled != !!rdev->wiphy.wowlan_config)
12595                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12596
12597         return 0;
12598  error:
12599         for (i = 0; i < new_triggers.n_patterns; i++)
12600                 kfree(new_triggers.patterns[i].mask);
12601         kfree(new_triggers.patterns);
12602         if (new_triggers.tcp && new_triggers.tcp->sock)
12603                 sock_release(new_triggers.tcp->sock);
12604         kfree(new_triggers.tcp);
12605         kfree(new_triggers.nd_config);
12606         return err;
12607 }
12608 #endif
12609
12610 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12611                                        struct cfg80211_registered_device *rdev)
12612 {
12613         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12614         int i, j, pat_len;
12615         struct cfg80211_coalesce_rules *rule;
12616
12617         if (!rdev->coalesce->n_rules)
12618                 return 0;
12619
12620         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12621         if (!nl_rules)
12622                 return -ENOBUFS;
12623
12624         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12625                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12626                 if (!nl_rule)
12627                         return -ENOBUFS;
12628
12629                 rule = &rdev->coalesce->rules[i];
12630                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12631                                 rule->delay))
12632                         return -ENOBUFS;
12633
12634                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12635                                 rule->condition))
12636                         return -ENOBUFS;
12637
12638                 nl_pats = nla_nest_start_noflag(msg,
12639                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12640                 if (!nl_pats)
12641                         return -ENOBUFS;
12642
12643                 for (j = 0; j < rule->n_patterns; j++) {
12644                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12645                         if (!nl_pat)
12646                                 return -ENOBUFS;
12647                         pat_len = rule->patterns[j].pattern_len;
12648                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12649                                     DIV_ROUND_UP(pat_len, 8),
12650                                     rule->patterns[j].mask) ||
12651                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12652                                     rule->patterns[j].pattern) ||
12653                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12654                                         rule->patterns[j].pkt_offset))
12655                                 return -ENOBUFS;
12656                         nla_nest_end(msg, nl_pat);
12657                 }
12658                 nla_nest_end(msg, nl_pats);
12659                 nla_nest_end(msg, nl_rule);
12660         }
12661         nla_nest_end(msg, nl_rules);
12662
12663         return 0;
12664 }
12665
12666 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12667 {
12668         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12669         struct sk_buff *msg;
12670         void *hdr;
12671
12672         if (!rdev->wiphy.coalesce)
12673                 return -EOPNOTSUPP;
12674
12675         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12676         if (!msg)
12677                 return -ENOMEM;
12678
12679         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12680                              NL80211_CMD_GET_COALESCE);
12681         if (!hdr)
12682                 goto nla_put_failure;
12683
12684         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12685                 goto nla_put_failure;
12686
12687         genlmsg_end(msg, hdr);
12688         return genlmsg_reply(msg, info);
12689
12690 nla_put_failure:
12691         nlmsg_free(msg);
12692         return -ENOBUFS;
12693 }
12694
12695 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12696 {
12697         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12698         int i, j;
12699         struct cfg80211_coalesce_rules *rule;
12700
12701         if (!coalesce)
12702                 return;
12703
12704         for (i = 0; i < coalesce->n_rules; i++) {
12705                 rule = &coalesce->rules[i];
12706                 for (j = 0; j < rule->n_patterns; j++)
12707                         kfree(rule->patterns[j].mask);
12708                 kfree(rule->patterns);
12709         }
12710         kfree(coalesce->rules);
12711         kfree(coalesce);
12712         rdev->coalesce = NULL;
12713 }
12714
12715 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12716                                        struct nlattr *rule,
12717                                        struct cfg80211_coalesce_rules *new_rule)
12718 {
12719         int err, i;
12720         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12721         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12722         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12723         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12724
12725         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12726                                           rule, nl80211_coalesce_policy, NULL);
12727         if (err)
12728                 return err;
12729
12730         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12731                 new_rule->delay =
12732                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12733         if (new_rule->delay > coalesce->max_delay)
12734                 return -EINVAL;
12735
12736         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12737                 new_rule->condition =
12738                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12739
12740         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12741                 return -EINVAL;
12742
12743         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12744                             rem)
12745                 n_patterns++;
12746         if (n_patterns > coalesce->n_patterns)
12747                 return -EINVAL;
12748
12749         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12750                                      GFP_KERNEL);
12751         if (!new_rule->patterns)
12752                 return -ENOMEM;
12753
12754         new_rule->n_patterns = n_patterns;
12755         i = 0;
12756
12757         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12758                             rem) {
12759                 u8 *mask_pat;
12760
12761                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12762                                                   pat,
12763                                                   nl80211_packet_pattern_policy,
12764                                                   NULL);
12765                 if (err)
12766                         return err;
12767
12768                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12769                     !pat_tb[NL80211_PKTPAT_PATTERN])
12770                         return -EINVAL;
12771                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12772                 mask_len = DIV_ROUND_UP(pat_len, 8);
12773                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12774                         return -EINVAL;
12775                 if (pat_len > coalesce->pattern_max_len ||
12776                     pat_len < coalesce->pattern_min_len)
12777                         return -EINVAL;
12778
12779                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12780                         pkt_offset = 0;
12781                 else
12782                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12783                 if (pkt_offset > coalesce->max_pkt_offset)
12784                         return -EINVAL;
12785                 new_rule->patterns[i].pkt_offset = pkt_offset;
12786
12787                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12788                 if (!mask_pat)
12789                         return -ENOMEM;
12790
12791                 new_rule->patterns[i].mask = mask_pat;
12792                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12793                        mask_len);
12794
12795                 mask_pat += mask_len;
12796                 new_rule->patterns[i].pattern = mask_pat;
12797                 new_rule->patterns[i].pattern_len = pat_len;
12798                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12799                        pat_len);
12800                 i++;
12801         }
12802
12803         return 0;
12804 }
12805
12806 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12807 {
12808         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12809         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12810         struct cfg80211_coalesce new_coalesce = {};
12811         struct cfg80211_coalesce *n_coalesce;
12812         int err, rem_rule, n_rules = 0, i, j;
12813         struct nlattr *rule;
12814         struct cfg80211_coalesce_rules *tmp_rule;
12815
12816         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12817                 return -EOPNOTSUPP;
12818
12819         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12820                 cfg80211_rdev_free_coalesce(rdev);
12821                 rdev_set_coalesce(rdev, NULL);
12822                 return 0;
12823         }
12824
12825         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12826                             rem_rule)
12827                 n_rules++;
12828         if (n_rules > coalesce->n_rules)
12829                 return -EINVAL;
12830
12831         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12832                                      GFP_KERNEL);
12833         if (!new_coalesce.rules)
12834                 return -ENOMEM;
12835
12836         new_coalesce.n_rules = n_rules;
12837         i = 0;
12838
12839         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12840                             rem_rule) {
12841                 err = nl80211_parse_coalesce_rule(rdev, rule,
12842                                                   &new_coalesce.rules[i]);
12843                 if (err)
12844                         goto error;
12845
12846                 i++;
12847         }
12848
12849         err = rdev_set_coalesce(rdev, &new_coalesce);
12850         if (err)
12851                 goto error;
12852
12853         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12854         if (!n_coalesce) {
12855                 err = -ENOMEM;
12856                 goto error;
12857         }
12858         cfg80211_rdev_free_coalesce(rdev);
12859         rdev->coalesce = n_coalesce;
12860
12861         return 0;
12862 error:
12863         for (i = 0; i < new_coalesce.n_rules; i++) {
12864                 tmp_rule = &new_coalesce.rules[i];
12865                 for (j = 0; j < tmp_rule->n_patterns; j++)
12866                         kfree(tmp_rule->patterns[j].mask);
12867                 kfree(tmp_rule->patterns);
12868         }
12869         kfree(new_coalesce.rules);
12870
12871         return err;
12872 }
12873
12874 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12875 {
12876         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12877         struct net_device *dev = info->user_ptr[1];
12878         struct wireless_dev *wdev = dev->ieee80211_ptr;
12879         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12880         struct cfg80211_gtk_rekey_data rekey_data = {};
12881         int err;
12882
12883         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12884                 return -EINVAL;
12885
12886         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12887                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12888                                           nl80211_rekey_policy, info->extack);
12889         if (err)
12890                 return err;
12891
12892         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12893             !tb[NL80211_REKEY_DATA_KCK])
12894                 return -EINVAL;
12895         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12896             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12897               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12898                 return -ERANGE;
12899         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12900             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12901               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12902                 return -ERANGE;
12903
12904         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12905         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12906         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12907         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12908         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12909         if (tb[NL80211_REKEY_DATA_AKM])
12910                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12911
12912         wdev_lock(wdev);
12913         if (!wdev->current_bss) {
12914                 err = -ENOTCONN;
12915                 goto out;
12916         }
12917
12918         if (!rdev->ops->set_rekey_data) {
12919                 err = -EOPNOTSUPP;
12920                 goto out;
12921         }
12922
12923         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12924  out:
12925         wdev_unlock(wdev);
12926         return err;
12927 }
12928
12929 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12930                                              struct genl_info *info)
12931 {
12932         struct net_device *dev = info->user_ptr[1];
12933         struct wireless_dev *wdev = dev->ieee80211_ptr;
12934
12935         if (wdev->iftype != NL80211_IFTYPE_AP &&
12936             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12937                 return -EINVAL;
12938
12939         if (wdev->ap_unexpected_nlportid)
12940                 return -EBUSY;
12941
12942         wdev->ap_unexpected_nlportid = info->snd_portid;
12943         return 0;
12944 }
12945
12946 static int nl80211_probe_client(struct sk_buff *skb,
12947                                 struct genl_info *info)
12948 {
12949         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12950         struct net_device *dev = info->user_ptr[1];
12951         struct wireless_dev *wdev = dev->ieee80211_ptr;
12952         struct sk_buff *msg;
12953         void *hdr;
12954         const u8 *addr;
12955         u64 cookie;
12956         int err;
12957
12958         if (wdev->iftype != NL80211_IFTYPE_AP &&
12959             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12960                 return -EOPNOTSUPP;
12961
12962         if (!info->attrs[NL80211_ATTR_MAC])
12963                 return -EINVAL;
12964
12965         if (!rdev->ops->probe_client)
12966                 return -EOPNOTSUPP;
12967
12968         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12969         if (!msg)
12970                 return -ENOMEM;
12971
12972         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12973                              NL80211_CMD_PROBE_CLIENT);
12974         if (!hdr) {
12975                 err = -ENOBUFS;
12976                 goto free_msg;
12977         }
12978
12979         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12980
12981         err = rdev_probe_client(rdev, dev, addr, &cookie);
12982         if (err)
12983                 goto free_msg;
12984
12985         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12986                               NL80211_ATTR_PAD))
12987                 goto nla_put_failure;
12988
12989         genlmsg_end(msg, hdr);
12990
12991         return genlmsg_reply(msg, info);
12992
12993  nla_put_failure:
12994         err = -ENOBUFS;
12995  free_msg:
12996         nlmsg_free(msg);
12997         return err;
12998 }
12999
13000 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
13001 {
13002         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13003         struct cfg80211_beacon_registration *reg, *nreg;
13004         int rv;
13005
13006         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
13007                 return -EOPNOTSUPP;
13008
13009         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
13010         if (!nreg)
13011                 return -ENOMEM;
13012
13013         /* First, check if already registered. */
13014         spin_lock_bh(&rdev->beacon_registrations_lock);
13015         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13016                 if (reg->nlportid == info->snd_portid) {
13017                         rv = -EALREADY;
13018                         goto out_err;
13019                 }
13020         }
13021         /* Add it to the list */
13022         nreg->nlportid = info->snd_portid;
13023         list_add(&nreg->list, &rdev->beacon_registrations);
13024
13025         spin_unlock_bh(&rdev->beacon_registrations_lock);
13026
13027         return 0;
13028 out_err:
13029         spin_unlock_bh(&rdev->beacon_registrations_lock);
13030         kfree(nreg);
13031         return rv;
13032 }
13033
13034 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13035 {
13036         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13037         struct wireless_dev *wdev = info->user_ptr[1];
13038         int err;
13039
13040         if (!rdev->ops->start_p2p_device)
13041                 return -EOPNOTSUPP;
13042
13043         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13044                 return -EOPNOTSUPP;
13045
13046         if (wdev_running(wdev))
13047                 return 0;
13048
13049         if (rfkill_blocked(rdev->wiphy.rfkill))
13050                 return -ERFKILL;
13051
13052         err = rdev_start_p2p_device(rdev, wdev);
13053         if (err)
13054                 return err;
13055
13056         wdev->is_running = true;
13057         rdev->opencount++;
13058
13059         return 0;
13060 }
13061
13062 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13063 {
13064         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13065         struct wireless_dev *wdev = info->user_ptr[1];
13066
13067         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13068                 return -EOPNOTSUPP;
13069
13070         if (!rdev->ops->stop_p2p_device)
13071                 return -EOPNOTSUPP;
13072
13073         cfg80211_stop_p2p_device(rdev, wdev);
13074
13075         return 0;
13076 }
13077
13078 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13079 {
13080         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13081         struct wireless_dev *wdev = info->user_ptr[1];
13082         struct cfg80211_nan_conf conf = {};
13083         int err;
13084
13085         if (wdev->iftype != NL80211_IFTYPE_NAN)
13086                 return -EOPNOTSUPP;
13087
13088         if (wdev_running(wdev))
13089                 return -EEXIST;
13090
13091         if (rfkill_blocked(rdev->wiphy.rfkill))
13092                 return -ERFKILL;
13093
13094         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
13095                 return -EINVAL;
13096
13097         conf.master_pref =
13098                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13099
13100         if (info->attrs[NL80211_ATTR_BANDS]) {
13101                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13102
13103                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13104                         return -EOPNOTSUPP;
13105
13106                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13107                         return -EINVAL;
13108
13109                 conf.bands = bands;
13110         }
13111
13112         err = rdev_start_nan(rdev, wdev, &conf);
13113         if (err)
13114                 return err;
13115
13116         wdev->is_running = true;
13117         rdev->opencount++;
13118
13119         return 0;
13120 }
13121
13122 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
13123 {
13124         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13125         struct wireless_dev *wdev = info->user_ptr[1];
13126
13127         if (wdev->iftype != NL80211_IFTYPE_NAN)
13128                 return -EOPNOTSUPP;
13129
13130         cfg80211_stop_nan(rdev, wdev);
13131
13132         return 0;
13133 }
13134
13135 static int validate_nan_filter(struct nlattr *filter_attr)
13136 {
13137         struct nlattr *attr;
13138         int len = 0, n_entries = 0, rem;
13139
13140         nla_for_each_nested(attr, filter_attr, rem) {
13141                 len += nla_len(attr);
13142                 n_entries++;
13143         }
13144
13145         if (len >= U8_MAX)
13146                 return -EINVAL;
13147
13148         return n_entries;
13149 }
13150
13151 static int handle_nan_filter(struct nlattr *attr_filter,
13152                              struct cfg80211_nan_func *func,
13153                              bool tx)
13154 {
13155         struct nlattr *attr;
13156         int n_entries, rem, i;
13157         struct cfg80211_nan_func_filter *filter;
13158
13159         n_entries = validate_nan_filter(attr_filter);
13160         if (n_entries < 0)
13161                 return n_entries;
13162
13163         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
13164
13165         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
13166         if (!filter)
13167                 return -ENOMEM;
13168
13169         i = 0;
13170         nla_for_each_nested(attr, attr_filter, rem) {
13171                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
13172                 filter[i].len = nla_len(attr);
13173                 i++;
13174         }
13175         if (tx) {
13176                 func->num_tx_filters = n_entries;
13177                 func->tx_filters = filter;
13178         } else {
13179                 func->num_rx_filters = n_entries;
13180                 func->rx_filters = filter;
13181         }
13182
13183         return 0;
13184 }
13185
13186 static int nl80211_nan_add_func(struct sk_buff *skb,
13187                                 struct genl_info *info)
13188 {
13189         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13190         struct wireless_dev *wdev = info->user_ptr[1];
13191         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
13192         struct cfg80211_nan_func *func;
13193         struct sk_buff *msg = NULL;
13194         void *hdr = NULL;
13195         int err = 0;
13196
13197         if (wdev->iftype != NL80211_IFTYPE_NAN)
13198                 return -EOPNOTSUPP;
13199
13200         if (!wdev_running(wdev))
13201                 return -ENOTCONN;
13202
13203         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
13204                 return -EINVAL;
13205
13206         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
13207                                           info->attrs[NL80211_ATTR_NAN_FUNC],
13208                                           nl80211_nan_func_policy,
13209                                           info->extack);
13210         if (err)
13211                 return err;
13212
13213         func = kzalloc(sizeof(*func), GFP_KERNEL);
13214         if (!func)
13215                 return -ENOMEM;
13216
13217         func->cookie = cfg80211_assign_cookie(rdev);
13218
13219         if (!tb[NL80211_NAN_FUNC_TYPE]) {
13220                 err = -EINVAL;
13221                 goto out;
13222         }
13223
13224
13225         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
13226
13227         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
13228                 err = -EINVAL;
13229                 goto out;
13230         }
13231
13232         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
13233                sizeof(func->service_id));
13234
13235         func->close_range =
13236                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
13237
13238         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13239                 func->serv_spec_info_len =
13240                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13241                 func->serv_spec_info =
13242                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13243                                 func->serv_spec_info_len,
13244                                 GFP_KERNEL);
13245                 if (!func->serv_spec_info) {
13246                         err = -ENOMEM;
13247                         goto out;
13248                 }
13249         }
13250
13251         if (tb[NL80211_NAN_FUNC_TTL])
13252                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13253
13254         switch (func->type) {
13255         case NL80211_NAN_FUNC_PUBLISH:
13256                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13257                         err = -EINVAL;
13258                         goto out;
13259                 }
13260
13261                 func->publish_type =
13262                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13263                 func->publish_bcast =
13264                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13265
13266                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13267                         func->publish_bcast) {
13268                         err = -EINVAL;
13269                         goto out;
13270                 }
13271                 break;
13272         case NL80211_NAN_FUNC_SUBSCRIBE:
13273                 func->subscribe_active =
13274                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13275                 break;
13276         case NL80211_NAN_FUNC_FOLLOW_UP:
13277                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13278                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13279                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13280                         err = -EINVAL;
13281                         goto out;
13282                 }
13283
13284                 func->followup_id =
13285                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13286                 func->followup_reqid =
13287                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13288                 memcpy(func->followup_dest.addr,
13289                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13290                        sizeof(func->followup_dest.addr));
13291                 if (func->ttl) {
13292                         err = -EINVAL;
13293                         goto out;
13294                 }
13295                 break;
13296         default:
13297                 err = -EINVAL;
13298                 goto out;
13299         }
13300
13301         if (tb[NL80211_NAN_FUNC_SRF]) {
13302                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13303
13304                 err = nla_parse_nested_deprecated(srf_tb,
13305                                                   NL80211_NAN_SRF_ATTR_MAX,
13306                                                   tb[NL80211_NAN_FUNC_SRF],
13307                                                   nl80211_nan_srf_policy,
13308                                                   info->extack);
13309                 if (err)
13310                         goto out;
13311
13312                 func->srf_include =
13313                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13314
13315                 if (srf_tb[NL80211_NAN_SRF_BF]) {
13316                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13317                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13318                                 err = -EINVAL;
13319                                 goto out;
13320                         }
13321
13322                         func->srf_bf_len =
13323                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13324                         func->srf_bf =
13325                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13326                                         func->srf_bf_len, GFP_KERNEL);
13327                         if (!func->srf_bf) {
13328                                 err = -ENOMEM;
13329                                 goto out;
13330                         }
13331
13332                         func->srf_bf_idx =
13333                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13334                 } else {
13335                         struct nlattr *attr, *mac_attr =
13336                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13337                         int n_entries, rem, i = 0;
13338
13339                         if (!mac_attr) {
13340                                 err = -EINVAL;
13341                                 goto out;
13342                         }
13343
13344                         n_entries = validate_acl_mac_addrs(mac_attr);
13345                         if (n_entries <= 0) {
13346                                 err = -EINVAL;
13347                                 goto out;
13348                         }
13349
13350                         func->srf_num_macs = n_entries;
13351                         func->srf_macs =
13352                                 kcalloc(n_entries, sizeof(*func->srf_macs),
13353                                         GFP_KERNEL);
13354                         if (!func->srf_macs) {
13355                                 err = -ENOMEM;
13356                                 goto out;
13357                         }
13358
13359                         nla_for_each_nested(attr, mac_attr, rem)
13360                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13361                                        sizeof(*func->srf_macs));
13362                 }
13363         }
13364
13365         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13366                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13367                                         func, true);
13368                 if (err)
13369                         goto out;
13370         }
13371
13372         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13373                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13374                                         func, false);
13375                 if (err)
13376                         goto out;
13377         }
13378
13379         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13380         if (!msg) {
13381                 err = -ENOMEM;
13382                 goto out;
13383         }
13384
13385         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13386                              NL80211_CMD_ADD_NAN_FUNCTION);
13387         /* This can't really happen - we just allocated 4KB */
13388         if (WARN_ON(!hdr)) {
13389                 err = -ENOMEM;
13390                 goto out;
13391         }
13392
13393         err = rdev_add_nan_func(rdev, wdev, func);
13394 out:
13395         if (err < 0) {
13396                 cfg80211_free_nan_func(func);
13397                 nlmsg_free(msg);
13398                 return err;
13399         }
13400
13401         /* propagate the instance id and cookie to userspace  */
13402         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13403                               NL80211_ATTR_PAD))
13404                 goto nla_put_failure;
13405
13406         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13407         if (!func_attr)
13408                 goto nla_put_failure;
13409
13410         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13411                        func->instance_id))
13412                 goto nla_put_failure;
13413
13414         nla_nest_end(msg, func_attr);
13415
13416         genlmsg_end(msg, hdr);
13417         return genlmsg_reply(msg, info);
13418
13419 nla_put_failure:
13420         nlmsg_free(msg);
13421         return -ENOBUFS;
13422 }
13423
13424 static int nl80211_nan_del_func(struct sk_buff *skb,
13425                                struct genl_info *info)
13426 {
13427         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13428         struct wireless_dev *wdev = info->user_ptr[1];
13429         u64 cookie;
13430
13431         if (wdev->iftype != NL80211_IFTYPE_NAN)
13432                 return -EOPNOTSUPP;
13433
13434         if (!wdev_running(wdev))
13435                 return -ENOTCONN;
13436
13437         if (!info->attrs[NL80211_ATTR_COOKIE])
13438                 return -EINVAL;
13439
13440         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13441
13442         rdev_del_nan_func(rdev, wdev, cookie);
13443
13444         return 0;
13445 }
13446
13447 static int nl80211_nan_change_config(struct sk_buff *skb,
13448                                      struct genl_info *info)
13449 {
13450         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13451         struct wireless_dev *wdev = info->user_ptr[1];
13452         struct cfg80211_nan_conf conf = {};
13453         u32 changed = 0;
13454
13455         if (wdev->iftype != NL80211_IFTYPE_NAN)
13456                 return -EOPNOTSUPP;
13457
13458         if (!wdev_running(wdev))
13459                 return -ENOTCONN;
13460
13461         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13462                 conf.master_pref =
13463                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13464                 if (conf.master_pref <= 1 || conf.master_pref == 255)
13465                         return -EINVAL;
13466
13467                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13468         }
13469
13470         if (info->attrs[NL80211_ATTR_BANDS]) {
13471                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13472
13473                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13474                         return -EOPNOTSUPP;
13475
13476                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13477                         return -EINVAL;
13478
13479                 conf.bands = bands;
13480                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13481         }
13482
13483         if (!changed)
13484                 return -EINVAL;
13485
13486         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13487 }
13488
13489 void cfg80211_nan_match(struct wireless_dev *wdev,
13490                         struct cfg80211_nan_match_params *match, gfp_t gfp)
13491 {
13492         struct wiphy *wiphy = wdev->wiphy;
13493         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13494         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13495         struct sk_buff *msg;
13496         void *hdr;
13497
13498         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13499                 return;
13500
13501         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13502         if (!msg)
13503                 return;
13504
13505         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13506         if (!hdr) {
13507                 nlmsg_free(msg);
13508                 return;
13509         }
13510
13511         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13512             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13513                                          wdev->netdev->ifindex)) ||
13514             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13515                               NL80211_ATTR_PAD))
13516                 goto nla_put_failure;
13517
13518         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13519                               NL80211_ATTR_PAD) ||
13520             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13521                 goto nla_put_failure;
13522
13523         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13524         if (!match_attr)
13525                 goto nla_put_failure;
13526
13527         local_func_attr = nla_nest_start_noflag(msg,
13528                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
13529         if (!local_func_attr)
13530                 goto nla_put_failure;
13531
13532         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13533                 goto nla_put_failure;
13534
13535         nla_nest_end(msg, local_func_attr);
13536
13537         peer_func_attr = nla_nest_start_noflag(msg,
13538                                                NL80211_NAN_MATCH_FUNC_PEER);
13539         if (!peer_func_attr)
13540                 goto nla_put_failure;
13541
13542         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13543             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13544                 goto nla_put_failure;
13545
13546         if (match->info && match->info_len &&
13547             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13548                     match->info))
13549                 goto nla_put_failure;
13550
13551         nla_nest_end(msg, peer_func_attr);
13552         nla_nest_end(msg, match_attr);
13553         genlmsg_end(msg, hdr);
13554
13555         if (!wdev->owner_nlportid)
13556                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13557                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13558         else
13559                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13560                                 wdev->owner_nlportid);
13561
13562         return;
13563
13564 nla_put_failure:
13565         nlmsg_free(msg);
13566 }
13567 EXPORT_SYMBOL(cfg80211_nan_match);
13568
13569 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13570                                   u8 inst_id,
13571                                   enum nl80211_nan_func_term_reason reason,
13572                                   u64 cookie, gfp_t gfp)
13573 {
13574         struct wiphy *wiphy = wdev->wiphy;
13575         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13576         struct sk_buff *msg;
13577         struct nlattr *func_attr;
13578         void *hdr;
13579
13580         if (WARN_ON(!inst_id))
13581                 return;
13582
13583         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13584         if (!msg)
13585                 return;
13586
13587         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13588         if (!hdr) {
13589                 nlmsg_free(msg);
13590                 return;
13591         }
13592
13593         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13594             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13595                                          wdev->netdev->ifindex)) ||
13596             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13597                               NL80211_ATTR_PAD))
13598                 goto nla_put_failure;
13599
13600         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13601                               NL80211_ATTR_PAD))
13602                 goto nla_put_failure;
13603
13604         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13605         if (!func_attr)
13606                 goto nla_put_failure;
13607
13608         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13609             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13610                 goto nla_put_failure;
13611
13612         nla_nest_end(msg, func_attr);
13613         genlmsg_end(msg, hdr);
13614
13615         if (!wdev->owner_nlportid)
13616                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13617                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13618         else
13619                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13620                                 wdev->owner_nlportid);
13621
13622         return;
13623
13624 nla_put_failure:
13625         nlmsg_free(msg);
13626 }
13627 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13628
13629 static int nl80211_get_protocol_features(struct sk_buff *skb,
13630                                          struct genl_info *info)
13631 {
13632         void *hdr;
13633         struct sk_buff *msg;
13634
13635         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13636         if (!msg)
13637                 return -ENOMEM;
13638
13639         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13640                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13641         if (!hdr)
13642                 goto nla_put_failure;
13643
13644         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13645                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13646                 goto nla_put_failure;
13647
13648         genlmsg_end(msg, hdr);
13649         return genlmsg_reply(msg, info);
13650
13651  nla_put_failure:
13652         kfree_skb(msg);
13653         return -ENOBUFS;
13654 }
13655
13656 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13657 {
13658         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13659         struct cfg80211_update_ft_ies_params ft_params;
13660         struct net_device *dev = info->user_ptr[1];
13661
13662         if (!rdev->ops->update_ft_ies)
13663                 return -EOPNOTSUPP;
13664
13665         if (!info->attrs[NL80211_ATTR_MDID] ||
13666             !info->attrs[NL80211_ATTR_IE])
13667                 return -EINVAL;
13668
13669         memset(&ft_params, 0, sizeof(ft_params));
13670         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13671         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13672         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13673
13674         return rdev_update_ft_ies(rdev, dev, &ft_params);
13675 }
13676
13677 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13678                                        struct genl_info *info)
13679 {
13680         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13681         struct wireless_dev *wdev = info->user_ptr[1];
13682         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13683         u16 duration;
13684         int ret;
13685
13686         if (!rdev->ops->crit_proto_start)
13687                 return -EOPNOTSUPP;
13688
13689         if (WARN_ON(!rdev->ops->crit_proto_stop))
13690                 return -EINVAL;
13691
13692         if (rdev->crit_proto_nlportid)
13693                 return -EBUSY;
13694
13695         /* determine protocol if provided */
13696         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13697                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13698
13699         if (proto >= NUM_NL80211_CRIT_PROTO)
13700                 return -EINVAL;
13701
13702         /* timeout must be provided */
13703         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13704                 return -EINVAL;
13705
13706         duration =
13707                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13708
13709         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13710         if (!ret)
13711                 rdev->crit_proto_nlportid = info->snd_portid;
13712
13713         return ret;
13714 }
13715
13716 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13717                                       struct genl_info *info)
13718 {
13719         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13720         struct wireless_dev *wdev = info->user_ptr[1];
13721
13722         if (!rdev->ops->crit_proto_stop)
13723                 return -EOPNOTSUPP;
13724
13725         if (rdev->crit_proto_nlportid) {
13726                 rdev->crit_proto_nlportid = 0;
13727                 rdev_crit_proto_stop(rdev, wdev);
13728         }
13729         return 0;
13730 }
13731
13732 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13733                                        struct nlattr *attr,
13734                                        struct netlink_ext_ack *extack)
13735 {
13736         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13737                 if (attr->nla_type & NLA_F_NESTED) {
13738                         NL_SET_ERR_MSG_ATTR(extack, attr,
13739                                             "unexpected nested data");
13740                         return -EINVAL;
13741                 }
13742
13743                 return 0;
13744         }
13745
13746         if (!(attr->nla_type & NLA_F_NESTED)) {
13747                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13748                 return -EINVAL;
13749         }
13750
13751         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13752 }
13753
13754 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13755 {
13756         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13757         struct wireless_dev *wdev =
13758                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
13759                                            info->attrs);
13760         int i, err;
13761         u32 vid, subcmd;
13762
13763         if (!rdev->wiphy.vendor_commands)
13764                 return -EOPNOTSUPP;
13765
13766         if (IS_ERR(wdev)) {
13767                 err = PTR_ERR(wdev);
13768                 if (err != -EINVAL)
13769                         return err;
13770                 wdev = NULL;
13771         } else if (wdev->wiphy != &rdev->wiphy) {
13772                 return -EINVAL;
13773         }
13774
13775         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13776             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13777                 return -EINVAL;
13778
13779         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13780         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13781         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13782                 const struct wiphy_vendor_command *vcmd;
13783                 void *data = NULL;
13784                 int len = 0;
13785
13786                 vcmd = &rdev->wiphy.vendor_commands[i];
13787
13788                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13789                         continue;
13790
13791                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13792                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13793                         if (!wdev)
13794                                 return -EINVAL;
13795                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13796                             !wdev->netdev)
13797                                 return -EINVAL;
13798
13799                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13800                                 if (!wdev_running(wdev))
13801                                         return -ENETDOWN;
13802                         }
13803                 } else {
13804                         wdev = NULL;
13805                 }
13806
13807                 if (!vcmd->doit)
13808                         return -EOPNOTSUPP;
13809
13810                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13811                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13812                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13813
13814                         err = nl80211_vendor_check_policy(vcmd,
13815                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13816                                         info->extack);
13817                         if (err)
13818                                 return err;
13819                 }
13820
13821                 rdev->cur_cmd_info = info;
13822                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13823                 rdev->cur_cmd_info = NULL;
13824                 return err;
13825         }
13826
13827         return -EOPNOTSUPP;
13828 }
13829
13830 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13831                                        struct netlink_callback *cb,
13832                                        struct cfg80211_registered_device **rdev,
13833                                        struct wireless_dev **wdev)
13834 {
13835         struct nlattr **attrbuf;
13836         u32 vid, subcmd;
13837         unsigned int i;
13838         int vcmd_idx = -1;
13839         int err;
13840         void *data = NULL;
13841         unsigned int data_len = 0;
13842
13843         if (cb->args[0]) {
13844                 /* subtract the 1 again here */
13845                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13846                 struct wireless_dev *tmp;
13847
13848                 if (!wiphy)
13849                         return -ENODEV;
13850                 *rdev = wiphy_to_rdev(wiphy);
13851                 *wdev = NULL;
13852
13853                 if (cb->args[1]) {
13854                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13855                                 if (tmp->identifier == cb->args[1] - 1) {
13856                                         *wdev = tmp;
13857                                         break;
13858                                 }
13859                         }
13860                 }
13861
13862                 /* keep rtnl locked in successful case */
13863                 return 0;
13864         }
13865
13866         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13867         if (!attrbuf)
13868                 return -ENOMEM;
13869
13870         err = nlmsg_parse_deprecated(cb->nlh,
13871                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13872                                      attrbuf, nl80211_fam.maxattr,
13873                                      nl80211_policy, NULL);
13874         if (err)
13875                 goto out;
13876
13877         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13878             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13879                 err = -EINVAL;
13880                 goto out;
13881         }
13882
13883         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
13884         if (IS_ERR(*wdev))
13885                 *wdev = NULL;
13886
13887         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13888         if (IS_ERR(*rdev)) {
13889                 err = PTR_ERR(*rdev);
13890                 goto out;
13891         }
13892
13893         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13894         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13895
13896         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13897                 const struct wiphy_vendor_command *vcmd;
13898
13899                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13900
13901                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13902                         continue;
13903
13904                 if (!vcmd->dumpit) {
13905                         err = -EOPNOTSUPP;
13906                         goto out;
13907                 }
13908
13909                 vcmd_idx = i;
13910                 break;
13911         }
13912
13913         if (vcmd_idx < 0) {
13914                 err = -EOPNOTSUPP;
13915                 goto out;
13916         }
13917
13918         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13919                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13920                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13921
13922                 err = nl80211_vendor_check_policy(
13923                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13924                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13925                                 cb->extack);
13926                 if (err)
13927                         goto out;
13928         }
13929
13930         /* 0 is the first index - add 1 to parse only once */
13931         cb->args[0] = (*rdev)->wiphy_idx + 1;
13932         /* add 1 to know if it was NULL */
13933         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13934         cb->args[2] = vcmd_idx;
13935         cb->args[3] = (unsigned long)data;
13936         cb->args[4] = data_len;
13937
13938         /* keep rtnl locked in successful case */
13939         err = 0;
13940 out:
13941         kfree(attrbuf);
13942         return err;
13943 }
13944
13945 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13946                                    struct netlink_callback *cb)
13947 {
13948         struct cfg80211_registered_device *rdev;
13949         struct wireless_dev *wdev;
13950         unsigned int vcmd_idx;
13951         const struct wiphy_vendor_command *vcmd;
13952         void *data;
13953         int data_len;
13954         int err;
13955         struct nlattr *vendor_data;
13956
13957         rtnl_lock();
13958         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13959         if (err)
13960                 goto out;
13961
13962         vcmd_idx = cb->args[2];
13963         data = (void *)cb->args[3];
13964         data_len = cb->args[4];
13965         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13966
13967         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13968                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13969                 if (!wdev) {
13970                         err = -EINVAL;
13971                         goto out;
13972                 }
13973                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13974                     !wdev->netdev) {
13975                         err = -EINVAL;
13976                         goto out;
13977                 }
13978
13979                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13980                         if (!wdev_running(wdev)) {
13981                                 err = -ENETDOWN;
13982                                 goto out;
13983                         }
13984                 }
13985         }
13986
13987         while (1) {
13988                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13989                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13990                                            NL80211_CMD_VENDOR);
13991                 if (!hdr)
13992                         break;
13993
13994                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13995                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13996                                                wdev_id(wdev),
13997                                                NL80211_ATTR_PAD))) {
13998                         genlmsg_cancel(skb, hdr);
13999                         break;
14000                 }
14001
14002                 vendor_data = nla_nest_start_noflag(skb,
14003                                                     NL80211_ATTR_VENDOR_DATA);
14004                 if (!vendor_data) {
14005                         genlmsg_cancel(skb, hdr);
14006                         break;
14007                 }
14008
14009                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
14010                                    (unsigned long *)&cb->args[5]);
14011                 nla_nest_end(skb, vendor_data);
14012
14013                 if (err == -ENOBUFS || err == -ENOENT) {
14014                         genlmsg_cancel(skb, hdr);
14015                         break;
14016                 } else if (err <= 0) {
14017                         genlmsg_cancel(skb, hdr);
14018                         goto out;
14019                 }
14020
14021                 genlmsg_end(skb, hdr);
14022         }
14023
14024         err = skb->len;
14025  out:
14026         rtnl_unlock();
14027         return err;
14028 }
14029
14030 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14031                                            enum nl80211_commands cmd,
14032                                            enum nl80211_attrs attr,
14033                                            int approxlen)
14034 {
14035         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14036
14037         if (WARN_ON(!rdev->cur_cmd_info))
14038                 return NULL;
14039
14040         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14041                                            rdev->cur_cmd_info->snd_portid,
14042                                            rdev->cur_cmd_info->snd_seq,
14043                                            cmd, attr, NULL, GFP_KERNEL);
14044 }
14045 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14046
14047 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14048 {
14049         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14050         void *hdr = ((void **)skb->cb)[1];
14051         struct nlattr *data = ((void **)skb->cb)[2];
14052
14053         /* clear CB data for netlink core to own from now on */
14054         memset(skb->cb, 0, sizeof(skb->cb));
14055
14056         if (WARN_ON(!rdev->cur_cmd_info)) {
14057                 kfree_skb(skb);
14058                 return -EINVAL;
14059         }
14060
14061         nla_nest_end(skb, data);
14062         genlmsg_end(skb, hdr);
14063         return genlmsg_reply(skb, rdev->cur_cmd_info);
14064 }
14065 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14066
14067 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14068 {
14069         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14070
14071         if (WARN_ON(!rdev->cur_cmd_info))
14072                 return 0;
14073
14074         return rdev->cur_cmd_info->snd_portid;
14075 }
14076 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
14077
14078 static int nl80211_set_qos_map(struct sk_buff *skb,
14079                                struct genl_info *info)
14080 {
14081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14082         struct cfg80211_qos_map *qos_map = NULL;
14083         struct net_device *dev = info->user_ptr[1];
14084         u8 *pos, len, num_des, des_len, des;
14085         int ret;
14086
14087         if (!rdev->ops->set_qos_map)
14088                 return -EOPNOTSUPP;
14089
14090         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
14091                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
14092                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
14093
14094                 if (len % 2)
14095                         return -EINVAL;
14096
14097                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
14098                 if (!qos_map)
14099                         return -ENOMEM;
14100
14101                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
14102                 if (num_des) {
14103                         des_len = num_des *
14104                                 sizeof(struct cfg80211_dscp_exception);
14105                         memcpy(qos_map->dscp_exception, pos, des_len);
14106                         qos_map->num_des = num_des;
14107                         for (des = 0; des < num_des; des++) {
14108                                 if (qos_map->dscp_exception[des].up > 7) {
14109                                         kfree(qos_map);
14110                                         return -EINVAL;
14111                                 }
14112                         }
14113                         pos += des_len;
14114                 }
14115                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
14116         }
14117
14118         wdev_lock(dev->ieee80211_ptr);
14119         ret = nl80211_key_allowed(dev->ieee80211_ptr);
14120         if (!ret)
14121                 ret = rdev_set_qos_map(rdev, dev, qos_map);
14122         wdev_unlock(dev->ieee80211_ptr);
14123
14124         kfree(qos_map);
14125         return ret;
14126 }
14127
14128 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
14129 {
14130         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14131         struct net_device *dev = info->user_ptr[1];
14132         struct wireless_dev *wdev = dev->ieee80211_ptr;
14133         const u8 *peer;
14134         u8 tsid, up;
14135         u16 admitted_time = 0;
14136         int err;
14137
14138         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
14139                 return -EOPNOTSUPP;
14140
14141         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
14142             !info->attrs[NL80211_ATTR_USER_PRIO])
14143                 return -EINVAL;
14144
14145         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14146         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
14147
14148         /* WMM uses TIDs 0-7 even for TSPEC */
14149         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
14150                 /* TODO: handle 802.11 TSPEC/admission control
14151                  * need more attributes for that (e.g. BA session requirement);
14152                  * change the WMM adminssion test above to allow both then
14153                  */
14154                 return -EINVAL;
14155         }
14156
14157         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14158
14159         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
14160                 admitted_time =
14161                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
14162                 if (!admitted_time)
14163                         return -EINVAL;
14164         }
14165
14166         wdev_lock(wdev);
14167         switch (wdev->iftype) {
14168         case NL80211_IFTYPE_STATION:
14169         case NL80211_IFTYPE_P2P_CLIENT:
14170                 if (wdev->current_bss)
14171                         break;
14172                 err = -ENOTCONN;
14173                 goto out;
14174         default:
14175                 err = -EOPNOTSUPP;
14176                 goto out;
14177         }
14178
14179         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
14180
14181  out:
14182         wdev_unlock(wdev);
14183         return err;
14184 }
14185
14186 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
14187 {
14188         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14189         struct net_device *dev = info->user_ptr[1];
14190         struct wireless_dev *wdev = dev->ieee80211_ptr;
14191         const u8 *peer;
14192         u8 tsid;
14193         int err;
14194
14195         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
14196                 return -EINVAL;
14197
14198         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14199         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14200
14201         wdev_lock(wdev);
14202         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
14203         wdev_unlock(wdev);
14204
14205         return err;
14206 }
14207
14208 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
14209                                        struct genl_info *info)
14210 {
14211         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14212         struct net_device *dev = info->user_ptr[1];
14213         struct wireless_dev *wdev = dev->ieee80211_ptr;
14214         struct cfg80211_chan_def chandef = {};
14215         const u8 *addr;
14216         u8 oper_class;
14217         int err;
14218
14219         if (!rdev->ops->tdls_channel_switch ||
14220             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14221                 return -EOPNOTSUPP;
14222
14223         switch (dev->ieee80211_ptr->iftype) {
14224         case NL80211_IFTYPE_STATION:
14225         case NL80211_IFTYPE_P2P_CLIENT:
14226                 break;
14227         default:
14228                 return -EOPNOTSUPP;
14229         }
14230
14231         if (!info->attrs[NL80211_ATTR_MAC] ||
14232             !info->attrs[NL80211_ATTR_OPER_CLASS])
14233                 return -EINVAL;
14234
14235         err = nl80211_parse_chandef(rdev, info, &chandef);
14236         if (err)
14237                 return err;
14238
14239         /*
14240          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14241          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14242          * specification is not defined for them.
14243          */
14244         if (chandef.chan->band == NL80211_BAND_2GHZ &&
14245             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14246             chandef.width != NL80211_CHAN_WIDTH_20)
14247                 return -EINVAL;
14248
14249         /* we will be active on the TDLS link */
14250         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14251                                            wdev->iftype))
14252                 return -EINVAL;
14253
14254         /* don't allow switching to DFS channels */
14255         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14256                 return -EINVAL;
14257
14258         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14259         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14260
14261         wdev_lock(wdev);
14262         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14263         wdev_unlock(wdev);
14264
14265         return err;
14266 }
14267
14268 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14269                                               struct genl_info *info)
14270 {
14271         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14272         struct net_device *dev = info->user_ptr[1];
14273         struct wireless_dev *wdev = dev->ieee80211_ptr;
14274         const u8 *addr;
14275
14276         if (!rdev->ops->tdls_channel_switch ||
14277             !rdev->ops->tdls_cancel_channel_switch ||
14278             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14279                 return -EOPNOTSUPP;
14280
14281         switch (dev->ieee80211_ptr->iftype) {
14282         case NL80211_IFTYPE_STATION:
14283         case NL80211_IFTYPE_P2P_CLIENT:
14284                 break;
14285         default:
14286                 return -EOPNOTSUPP;
14287         }
14288
14289         if (!info->attrs[NL80211_ATTR_MAC])
14290                 return -EINVAL;
14291
14292         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14293
14294         wdev_lock(wdev);
14295         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14296         wdev_unlock(wdev);
14297
14298         return 0;
14299 }
14300
14301 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14302                                             struct genl_info *info)
14303 {
14304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14305         struct net_device *dev = info->user_ptr[1];
14306         struct wireless_dev *wdev = dev->ieee80211_ptr;
14307         const struct nlattr *nla;
14308         bool enabled;
14309
14310         if (!rdev->ops->set_multicast_to_unicast)
14311                 return -EOPNOTSUPP;
14312
14313         if (wdev->iftype != NL80211_IFTYPE_AP &&
14314             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14315                 return -EOPNOTSUPP;
14316
14317         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14318         enabled = nla_get_flag(nla);
14319
14320         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14321 }
14322
14323 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14324 {
14325         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14326         struct net_device *dev = info->user_ptr[1];
14327         struct wireless_dev *wdev = dev->ieee80211_ptr;
14328         struct cfg80211_pmk_conf pmk_conf = {};
14329         int ret;
14330
14331         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14332             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14333                 return -EOPNOTSUPP;
14334
14335         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14336                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14337                 return -EOPNOTSUPP;
14338
14339         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14340                 return -EINVAL;
14341
14342         wdev_lock(wdev);
14343         if (!wdev->current_bss) {
14344                 ret = -ENOTCONN;
14345                 goto out;
14346         }
14347
14348         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14349         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14350                 ret = -EINVAL;
14351                 goto out;
14352         }
14353
14354         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14355         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14356         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14357             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14358                 ret = -EINVAL;
14359                 goto out;
14360         }
14361
14362         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14363                 pmk_conf.pmk_r0_name =
14364                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14365
14366         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14367 out:
14368         wdev_unlock(wdev);
14369         return ret;
14370 }
14371
14372 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14373 {
14374         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14375         struct net_device *dev = info->user_ptr[1];
14376         struct wireless_dev *wdev = dev->ieee80211_ptr;
14377         const u8 *aa;
14378         int ret;
14379
14380         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14381             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14382                 return -EOPNOTSUPP;
14383
14384         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14385                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14386                 return -EOPNOTSUPP;
14387
14388         if (!info->attrs[NL80211_ATTR_MAC])
14389                 return -EINVAL;
14390
14391         wdev_lock(wdev);
14392         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14393         ret = rdev_del_pmk(rdev, dev, aa);
14394         wdev_unlock(wdev);
14395
14396         return ret;
14397 }
14398
14399 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14400 {
14401         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14402         struct net_device *dev = info->user_ptr[1];
14403         struct cfg80211_external_auth_params params;
14404
14405         if (!rdev->ops->external_auth)
14406                 return -EOPNOTSUPP;
14407
14408         if (!info->attrs[NL80211_ATTR_SSID] &&
14409             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14410             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14411                 return -EINVAL;
14412
14413         if (!info->attrs[NL80211_ATTR_BSSID])
14414                 return -EINVAL;
14415
14416         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14417                 return -EINVAL;
14418
14419         memset(&params, 0, sizeof(params));
14420
14421         if (info->attrs[NL80211_ATTR_SSID]) {
14422                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14423                 if (params.ssid.ssid_len == 0)
14424                         return -EINVAL;
14425                 memcpy(params.ssid.ssid,
14426                        nla_data(info->attrs[NL80211_ATTR_SSID]),
14427                        params.ssid.ssid_len);
14428         }
14429
14430         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14431                ETH_ALEN);
14432
14433         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14434
14435         if (info->attrs[NL80211_ATTR_PMKID])
14436                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14437
14438         return rdev_external_auth(rdev, dev, &params);
14439 }
14440
14441 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14442 {
14443         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14444         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14445         struct net_device *dev = info->user_ptr[1];
14446         struct wireless_dev *wdev = dev->ieee80211_ptr;
14447         const u8 *buf;
14448         size_t len;
14449         u8 *dest;
14450         u16 proto;
14451         bool noencrypt;
14452         u64 cookie = 0;
14453         int err;
14454
14455         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14456                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14457                 return -EOPNOTSUPP;
14458
14459         if (!rdev->ops->tx_control_port)
14460                 return -EOPNOTSUPP;
14461
14462         if (!info->attrs[NL80211_ATTR_FRAME] ||
14463             !info->attrs[NL80211_ATTR_MAC] ||
14464             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14465                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14466                 return -EINVAL;
14467         }
14468
14469         wdev_lock(wdev);
14470
14471         switch (wdev->iftype) {
14472         case NL80211_IFTYPE_AP:
14473         case NL80211_IFTYPE_P2P_GO:
14474         case NL80211_IFTYPE_MESH_POINT:
14475                 break;
14476         case NL80211_IFTYPE_ADHOC:
14477         case NL80211_IFTYPE_STATION:
14478         case NL80211_IFTYPE_P2P_CLIENT:
14479                 if (wdev->current_bss)
14480                         break;
14481                 err = -ENOTCONN;
14482                 goto out;
14483         default:
14484                 err = -EOPNOTSUPP;
14485                 goto out;
14486         }
14487
14488         wdev_unlock(wdev);
14489
14490         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14491         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14492         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14493         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14494         noencrypt =
14495                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14496
14497         err = rdev_tx_control_port(rdev, dev, buf, len,
14498                                    dest, cpu_to_be16(proto), noencrypt,
14499                                    dont_wait_for_ack ? NULL : &cookie);
14500         if (!err && !dont_wait_for_ack)
14501                 nl_set_extack_cookie_u64(info->extack, cookie);
14502         return err;
14503  out:
14504         wdev_unlock(wdev);
14505         return err;
14506 }
14507
14508 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14509                                            struct genl_info *info)
14510 {
14511         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14512         struct net_device *dev = info->user_ptr[1];
14513         struct wireless_dev *wdev = dev->ieee80211_ptr;
14514         struct cfg80211_ftm_responder_stats ftm_stats = {};
14515         struct sk_buff *msg;
14516         void *hdr;
14517         struct nlattr *ftm_stats_attr;
14518         int err;
14519
14520         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14521                 return -EOPNOTSUPP;
14522
14523         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14524         if (err)
14525                 return err;
14526
14527         if (!ftm_stats.filled)
14528                 return -ENODATA;
14529
14530         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14531         if (!msg)
14532                 return -ENOMEM;
14533
14534         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14535                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14536         if (!hdr)
14537                 goto nla_put_failure;
14538
14539         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14540                 goto nla_put_failure;
14541
14542         ftm_stats_attr = nla_nest_start_noflag(msg,
14543                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14544         if (!ftm_stats_attr)
14545                 goto nla_put_failure;
14546
14547 #define SET_FTM(field, name, type)                                       \
14548         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14549             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14550                              ftm_stats.field))                           \
14551                 goto nla_put_failure; } while (0)
14552 #define SET_FTM_U64(field, name)                                         \
14553         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14554             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14555                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14556                 goto nla_put_failure; } while (0)
14557
14558         SET_FTM(success_num, SUCCESS_NUM, u32);
14559         SET_FTM(partial_num, PARTIAL_NUM, u32);
14560         SET_FTM(failed_num, FAILED_NUM, u32);
14561         SET_FTM(asap_num, ASAP_NUM, u32);
14562         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14563         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14564         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14565         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14566         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14567 #undef SET_FTM
14568
14569         nla_nest_end(msg, ftm_stats_attr);
14570
14571         genlmsg_end(msg, hdr);
14572         return genlmsg_reply(msg, info);
14573
14574 nla_put_failure:
14575         nlmsg_free(msg);
14576         return -ENOBUFS;
14577 }
14578
14579 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14580 {
14581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14582         struct cfg80211_update_owe_info owe_info;
14583         struct net_device *dev = info->user_ptr[1];
14584
14585         if (!rdev->ops->update_owe_info)
14586                 return -EOPNOTSUPP;
14587
14588         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14589             !info->attrs[NL80211_ATTR_MAC])
14590                 return -EINVAL;
14591
14592         memset(&owe_info, 0, sizeof(owe_info));
14593         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14594         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14595
14596         if (info->attrs[NL80211_ATTR_IE]) {
14597                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14598                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14599         }
14600
14601         return rdev_update_owe_info(rdev, dev, &owe_info);
14602 }
14603
14604 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14605 {
14606         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14607         struct net_device *dev = info->user_ptr[1];
14608         struct wireless_dev *wdev = dev->ieee80211_ptr;
14609         struct station_info sinfo = {};
14610         const u8 *buf;
14611         size_t len;
14612         u8 *dest;
14613         int err;
14614
14615         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14616                 return -EOPNOTSUPP;
14617
14618         if (!info->attrs[NL80211_ATTR_MAC] ||
14619             !info->attrs[NL80211_ATTR_FRAME]) {
14620                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14621                 return -EINVAL;
14622         }
14623
14624         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14625                 return -EOPNOTSUPP;
14626
14627         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14628         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14629         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14630
14631         if (len < sizeof(struct ethhdr))
14632                 return -EINVAL;
14633
14634         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14635             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14636                 return -EINVAL;
14637
14638         err = rdev_get_station(rdev, dev, dest, &sinfo);
14639         if (err)
14640                 return err;
14641
14642         cfg80211_sinfo_release_content(&sinfo);
14643
14644         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14645 }
14646
14647 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14648                           struct nlattr *attrs[], struct net_device *dev,
14649                           struct cfg80211_tid_cfg *tid_conf,
14650                           struct genl_info *info, const u8 *peer)
14651 {
14652         struct netlink_ext_ack *extack = info->extack;
14653         u64 mask;
14654         int err;
14655
14656         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14657                 return -EINVAL;
14658
14659         tid_conf->config_override =
14660                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14661         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14662
14663         if (tid_conf->config_override) {
14664                 if (rdev->ops->reset_tid_config) {
14665                         err = rdev_reset_tid_config(rdev, dev, peer,
14666                                                     tid_conf->tids);
14667                         if (err)
14668                                 return err;
14669                 } else {
14670                         return -EINVAL;
14671                 }
14672         }
14673
14674         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14675                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14676                 tid_conf->noack =
14677                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14678         }
14679
14680         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14681                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14682                 tid_conf->retry_short =
14683                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14684
14685                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14686                         return -EINVAL;
14687         }
14688
14689         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14690                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14691                 tid_conf->retry_long =
14692                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14693
14694                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14695                         return -EINVAL;
14696         }
14697
14698         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14699                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14700                 tid_conf->ampdu =
14701                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14702         }
14703
14704         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14705                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14706                 tid_conf->rtscts =
14707                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14708         }
14709
14710         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14711                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14712                 tid_conf->amsdu =
14713                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14714         }
14715
14716         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14717                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14718
14719                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14720
14721                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14722                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14723                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14724                                                     &tid_conf->txrate_mask, dev,
14725                                                     true);
14726                         if (err)
14727                                 return err;
14728
14729                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14730                 }
14731                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14732         }
14733
14734         if (peer)
14735                 mask = rdev->wiphy.tid_config_support.peer;
14736         else
14737                 mask = rdev->wiphy.tid_config_support.vif;
14738
14739         if (tid_conf->mask & ~mask) {
14740                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14741                 return -ENOTSUPP;
14742         }
14743
14744         return 0;
14745 }
14746
14747 static int nl80211_set_tid_config(struct sk_buff *skb,
14748                                   struct genl_info *info)
14749 {
14750         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14751         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14752         struct net_device *dev = info->user_ptr[1];
14753         struct cfg80211_tid_config *tid_config;
14754         struct nlattr *tid;
14755         int conf_idx = 0, rem_conf;
14756         int ret = -EINVAL;
14757         u32 num_conf = 0;
14758
14759         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14760                 return -EINVAL;
14761
14762         if (!rdev->ops->set_tid_config)
14763                 return -EOPNOTSUPP;
14764
14765         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14766                             rem_conf)
14767                 num_conf++;
14768
14769         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14770                              GFP_KERNEL);
14771         if (!tid_config)
14772                 return -ENOMEM;
14773
14774         tid_config->n_tid_conf = num_conf;
14775
14776         if (info->attrs[NL80211_ATTR_MAC])
14777                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14778
14779         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14780                             rem_conf) {
14781                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14782                                        tid, NULL, NULL);
14783
14784                 if (ret)
14785                         goto bad_tid_conf;
14786
14787                 ret = parse_tid_conf(rdev, attrs, dev,
14788                                      &tid_config->tid_conf[conf_idx],
14789                                      info, tid_config->peer);
14790                 if (ret)
14791                         goto bad_tid_conf;
14792
14793                 conf_idx++;
14794         }
14795
14796         ret = rdev_set_tid_config(rdev, dev, tid_config);
14797
14798 bad_tid_conf:
14799         kfree(tid_config);
14800         return ret;
14801 }
14802
14803 #define NL80211_FLAG_NEED_WIPHY         0x01
14804 #define NL80211_FLAG_NEED_NETDEV        0x02
14805 #define NL80211_FLAG_NEED_RTNL          0x04
14806 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14807 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14808                                          NL80211_FLAG_CHECK_NETDEV_UP)
14809 #define NL80211_FLAG_NEED_WDEV          0x10
14810 /* If a netdev is associated, it must be UP, P2P must be started */
14811 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14812                                          NL80211_FLAG_CHECK_NETDEV_UP)
14813 #define NL80211_FLAG_CLEAR_SKB          0x20
14814 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
14815
14816 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14817                             struct genl_info *info)
14818 {
14819         struct cfg80211_registered_device *rdev = NULL;
14820         struct wireless_dev *wdev;
14821         struct net_device *dev;
14822
14823         rtnl_lock();
14824         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14825                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14826                 if (IS_ERR(rdev)) {
14827                         rtnl_unlock();
14828                         return PTR_ERR(rdev);
14829                 }
14830                 info->user_ptr[0] = rdev;
14831         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14832                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14833                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
14834                                                   info->attrs);
14835                 if (IS_ERR(wdev)) {
14836                         rtnl_unlock();
14837                         return PTR_ERR(wdev);
14838                 }
14839
14840                 dev = wdev->netdev;
14841                 rdev = wiphy_to_rdev(wdev->wiphy);
14842
14843                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14844                         if (!dev) {
14845                                 rtnl_unlock();
14846                                 return -EINVAL;
14847                         }
14848
14849                         info->user_ptr[1] = dev;
14850                 } else {
14851                         info->user_ptr[1] = wdev;
14852                 }
14853
14854                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14855                     !wdev_running(wdev)) {
14856                         rtnl_unlock();
14857                         return -ENETDOWN;
14858                 }
14859
14860                 if (dev)
14861                         dev_hold(dev);
14862
14863                 info->user_ptr[0] = rdev;
14864         }
14865
14866         if (rdev && !(ops->internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
14867                 wiphy_lock(&rdev->wiphy);
14868                 /* we keep the mutex locked until post_doit */
14869                 __release(&rdev->wiphy.mtx);
14870         }
14871         if (!(ops->internal_flags & NL80211_FLAG_NEED_RTNL))
14872                 rtnl_unlock();
14873
14874         return 0;
14875 }
14876
14877 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14878                               struct genl_info *info)
14879 {
14880         if (info->user_ptr[1]) {
14881                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14882                         struct wireless_dev *wdev = info->user_ptr[1];
14883
14884                         if (wdev->netdev)
14885                                 dev_put(wdev->netdev);
14886                 } else {
14887                         dev_put(info->user_ptr[1]);
14888                 }
14889         }
14890
14891         if (info->user_ptr[0] &&
14892             !(ops->internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
14893                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14894
14895                 /* we kept the mutex locked since pre_doit */
14896                 __acquire(&rdev->wiphy.mtx);
14897                 wiphy_unlock(&rdev->wiphy);
14898         }
14899
14900         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14901                 rtnl_unlock();
14902
14903         /* If needed, clear the netlink message payload from the SKB
14904          * as it might contain key data that shouldn't stick around on
14905          * the heap after the SKB is freed. The netlink message header
14906          * is still needed for further processing, so leave it intact.
14907          */
14908         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14909                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14910
14911                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14912         }
14913 }
14914
14915 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
14916                                      struct cfg80211_sar_specs *sar_specs,
14917                                      struct nlattr *spec[], int index)
14918 {
14919         u32 range_index, i;
14920
14921         if (!sar_specs || !spec)
14922                 return -EINVAL;
14923
14924         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
14925             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
14926                 return -EINVAL;
14927
14928         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
14929
14930         /* check if range_index exceeds num_freq_ranges */
14931         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
14932                 return -EINVAL;
14933
14934         /* check if range_index duplicates */
14935         for (i = 0; i < index; i++) {
14936                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
14937                         return -EINVAL;
14938         }
14939
14940         sar_specs->sub_specs[index].power =
14941                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
14942
14943         sar_specs->sub_specs[index].freq_range_index = range_index;
14944
14945         return 0;
14946 }
14947
14948 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
14949 {
14950         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14951         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
14952         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
14953         struct cfg80211_sar_specs *sar_spec;
14954         enum nl80211_sar_type type;
14955         struct nlattr *spec_list;
14956         u32 specs;
14957         int rem, err;
14958
14959         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
14960                 return -EOPNOTSUPP;
14961
14962         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
14963                 return -EINVAL;
14964
14965         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
14966                          info->attrs[NL80211_ATTR_SAR_SPEC],
14967                          NULL, NULL);
14968
14969         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
14970                 return -EINVAL;
14971
14972         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
14973         if (type != rdev->wiphy.sar_capa->type)
14974                 return -EINVAL;
14975
14976         specs = 0;
14977         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
14978                 specs++;
14979
14980         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
14981                 return -EINVAL;
14982
14983         sar_spec = kzalloc(sizeof(*sar_spec) +
14984                            specs * sizeof(struct cfg80211_sar_sub_specs),
14985                            GFP_KERNEL);
14986         if (!sar_spec)
14987                 return -ENOMEM;
14988
14989         sar_spec->type = type;
14990         specs = 0;
14991         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
14992                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
14993                                  spec_list, NULL, NULL);
14994
14995                 switch (type) {
14996                 case NL80211_SAR_TYPE_POWER:
14997                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
14998                                                       spec, specs)) {
14999                                 err = -EINVAL;
15000                                 goto error;
15001                         }
15002                         break;
15003                 default:
15004                         err = -EINVAL;
15005                         goto error;
15006                 }
15007                 specs++;
15008         }
15009
15010         sar_spec->num_sub_specs = specs;
15011
15012         rdev->cur_cmd_info = info;
15013         err = rdev_set_sar_specs(rdev, sar_spec);
15014         rdev->cur_cmd_info = NULL;
15015 error:
15016         kfree(sar_spec);
15017         return err;
15018 }
15019
15020 static const struct genl_ops nl80211_ops[] = {
15021         {
15022                 .cmd = NL80211_CMD_GET_WIPHY,
15023                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15024                 .doit = nl80211_get_wiphy,
15025                 .dumpit = nl80211_dump_wiphy,
15026                 .done = nl80211_dump_wiphy_done,
15027                 /* can be retrieved by unprivileged users */
15028                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15029         },
15030 };
15031
15032 static const struct genl_small_ops nl80211_small_ops[] = {
15033         {
15034                 .cmd = NL80211_CMD_SET_WIPHY,
15035                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15036                 .doit = nl80211_set_wiphy,
15037                 .flags = GENL_UNS_ADMIN_PERM,
15038         },
15039         {
15040                 .cmd = NL80211_CMD_GET_INTERFACE,
15041                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15042                 .doit = nl80211_get_interface,
15043                 .dumpit = nl80211_dump_interface,
15044                 /* can be retrieved by unprivileged users */
15045                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15046         },
15047         {
15048                 .cmd = NL80211_CMD_SET_INTERFACE,
15049                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15050                 .doit = nl80211_set_interface,
15051                 .flags = GENL_UNS_ADMIN_PERM,
15052                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15053                                   NL80211_FLAG_NEED_RTNL,
15054         },
15055         {
15056                 .cmd = NL80211_CMD_NEW_INTERFACE,
15057                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15058                 .doit = nl80211_new_interface,
15059                 .flags = GENL_UNS_ADMIN_PERM,
15060                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15061                                   NL80211_FLAG_NEED_RTNL |
15062                                   /* we take the wiphy mutex later ourselves */
15063                                   NL80211_FLAG_NO_WIPHY_MTX,
15064         },
15065         {
15066                 .cmd = NL80211_CMD_DEL_INTERFACE,
15067                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15068                 .doit = nl80211_del_interface,
15069                 .flags = GENL_UNS_ADMIN_PERM,
15070                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15071                                   NL80211_FLAG_NEED_RTNL,
15072         },
15073         {
15074                 .cmd = NL80211_CMD_GET_KEY,
15075                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15076                 .doit = nl80211_get_key,
15077                 .flags = GENL_UNS_ADMIN_PERM,
15078                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15079         },
15080         {
15081                 .cmd = NL80211_CMD_SET_KEY,
15082                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15083                 .doit = nl80211_set_key,
15084                 .flags = GENL_UNS_ADMIN_PERM,
15085                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15086                                   NL80211_FLAG_CLEAR_SKB,
15087         },
15088         {
15089                 .cmd = NL80211_CMD_NEW_KEY,
15090                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15091                 .doit = nl80211_new_key,
15092                 .flags = GENL_UNS_ADMIN_PERM,
15093                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15094                                   NL80211_FLAG_CLEAR_SKB,
15095         },
15096         {
15097                 .cmd = NL80211_CMD_DEL_KEY,
15098                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15099                 .doit = nl80211_del_key,
15100                 .flags = GENL_UNS_ADMIN_PERM,
15101                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15102         },
15103         {
15104                 .cmd = NL80211_CMD_SET_BEACON,
15105                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15106                 .flags = GENL_UNS_ADMIN_PERM,
15107                 .doit = nl80211_set_beacon,
15108                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15109         },
15110         {
15111                 .cmd = NL80211_CMD_START_AP,
15112                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15113                 .flags = GENL_UNS_ADMIN_PERM,
15114                 .doit = nl80211_start_ap,
15115                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15116         },
15117         {
15118                 .cmd = NL80211_CMD_STOP_AP,
15119                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15120                 .flags = GENL_UNS_ADMIN_PERM,
15121                 .doit = nl80211_stop_ap,
15122                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15123         },
15124         {
15125                 .cmd = NL80211_CMD_GET_STATION,
15126                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15127                 .doit = nl80211_get_station,
15128                 .dumpit = nl80211_dump_station,
15129                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15130         },
15131         {
15132                 .cmd = NL80211_CMD_SET_STATION,
15133                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15134                 .doit = nl80211_set_station,
15135                 .flags = GENL_UNS_ADMIN_PERM,
15136                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15137         },
15138         {
15139                 .cmd = NL80211_CMD_NEW_STATION,
15140                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15141                 .doit = nl80211_new_station,
15142                 .flags = GENL_UNS_ADMIN_PERM,
15143                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15144         },
15145         {
15146                 .cmd = NL80211_CMD_DEL_STATION,
15147                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15148                 .doit = nl80211_del_station,
15149                 .flags = GENL_UNS_ADMIN_PERM,
15150                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15151         },
15152         {
15153                 .cmd = NL80211_CMD_GET_MPATH,
15154                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15155                 .doit = nl80211_get_mpath,
15156                 .dumpit = nl80211_dump_mpath,
15157                 .flags = GENL_UNS_ADMIN_PERM,
15158                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15159         },
15160         {
15161                 .cmd = NL80211_CMD_GET_MPP,
15162                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15163                 .doit = nl80211_get_mpp,
15164                 .dumpit = nl80211_dump_mpp,
15165                 .flags = GENL_UNS_ADMIN_PERM,
15166                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15167         },
15168         {
15169                 .cmd = NL80211_CMD_SET_MPATH,
15170                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15171                 .doit = nl80211_set_mpath,
15172                 .flags = GENL_UNS_ADMIN_PERM,
15173                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15174         },
15175         {
15176                 .cmd = NL80211_CMD_NEW_MPATH,
15177                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15178                 .doit = nl80211_new_mpath,
15179                 .flags = GENL_UNS_ADMIN_PERM,
15180                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15181         },
15182         {
15183                 .cmd = NL80211_CMD_DEL_MPATH,
15184                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15185                 .doit = nl80211_del_mpath,
15186                 .flags = GENL_UNS_ADMIN_PERM,
15187                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15188         },
15189         {
15190                 .cmd = NL80211_CMD_SET_BSS,
15191                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15192                 .doit = nl80211_set_bss,
15193                 .flags = GENL_UNS_ADMIN_PERM,
15194                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15195         },
15196         {
15197                 .cmd = NL80211_CMD_GET_REG,
15198                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15199                 .doit = nl80211_get_reg_do,
15200                 .dumpit = nl80211_get_reg_dump,
15201                 .internal_flags = 0,
15202                 /* can be retrieved by unprivileged users */
15203         },
15204 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
15205         {
15206                 .cmd = NL80211_CMD_SET_REG,
15207                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15208                 .doit = nl80211_set_reg,
15209                 .flags = GENL_ADMIN_PERM,
15210                 .internal_flags = 0,
15211         },
15212 #endif
15213         {
15214                 .cmd = NL80211_CMD_REQ_SET_REG,
15215                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15216                 .doit = nl80211_req_set_reg,
15217                 .flags = GENL_ADMIN_PERM,
15218         },
15219         {
15220                 .cmd = NL80211_CMD_RELOAD_REGDB,
15221                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15222                 .doit = nl80211_reload_regdb,
15223                 .flags = GENL_ADMIN_PERM,
15224         },
15225         {
15226                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
15227                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15228                 .doit = nl80211_get_mesh_config,
15229                 /* can be retrieved by unprivileged users */
15230                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15231         },
15232         {
15233                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
15234                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15235                 .doit = nl80211_update_mesh_config,
15236                 .flags = GENL_UNS_ADMIN_PERM,
15237                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15238         },
15239         {
15240                 .cmd = NL80211_CMD_TRIGGER_SCAN,
15241                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15242                 .doit = nl80211_trigger_scan,
15243                 .flags = GENL_UNS_ADMIN_PERM,
15244                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15245         },
15246         {
15247                 .cmd = NL80211_CMD_ABORT_SCAN,
15248                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15249                 .doit = nl80211_abort_scan,
15250                 .flags = GENL_UNS_ADMIN_PERM,
15251                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15252         },
15253         {
15254                 .cmd = NL80211_CMD_GET_SCAN,
15255                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15256                 .dumpit = nl80211_dump_scan,
15257         },
15258         {
15259                 .cmd = NL80211_CMD_START_SCHED_SCAN,
15260                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15261                 .doit = nl80211_start_sched_scan,
15262                 .flags = GENL_UNS_ADMIN_PERM,
15263                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15264         },
15265         {
15266                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
15267                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15268                 .doit = nl80211_stop_sched_scan,
15269                 .flags = GENL_UNS_ADMIN_PERM,
15270                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15271         },
15272         {
15273                 .cmd = NL80211_CMD_AUTHENTICATE,
15274                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15275                 .doit = nl80211_authenticate,
15276                 .flags = GENL_UNS_ADMIN_PERM,
15277                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15278                                   0 |
15279                                   NL80211_FLAG_CLEAR_SKB,
15280         },
15281         {
15282                 .cmd = NL80211_CMD_ASSOCIATE,
15283                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15284                 .doit = nl80211_associate,
15285                 .flags = GENL_UNS_ADMIN_PERM,
15286                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15287                                   0 |
15288                                   NL80211_FLAG_CLEAR_SKB,
15289         },
15290         {
15291                 .cmd = NL80211_CMD_DEAUTHENTICATE,
15292                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15293                 .doit = nl80211_deauthenticate,
15294                 .flags = GENL_UNS_ADMIN_PERM,
15295                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15296         },
15297         {
15298                 .cmd = NL80211_CMD_DISASSOCIATE,
15299                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15300                 .doit = nl80211_disassociate,
15301                 .flags = GENL_UNS_ADMIN_PERM,
15302                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15303         },
15304         {
15305                 .cmd = NL80211_CMD_JOIN_IBSS,
15306                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15307                 .doit = nl80211_join_ibss,
15308                 .flags = GENL_UNS_ADMIN_PERM,
15309                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15310         },
15311         {
15312                 .cmd = NL80211_CMD_LEAVE_IBSS,
15313                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15314                 .doit = nl80211_leave_ibss,
15315                 .flags = GENL_UNS_ADMIN_PERM,
15316                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15317         },
15318 #ifdef CONFIG_NL80211_TESTMODE
15319         {
15320                 .cmd = NL80211_CMD_TESTMODE,
15321                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15322                 .doit = nl80211_testmode_do,
15323                 .dumpit = nl80211_testmode_dump,
15324                 .flags = GENL_UNS_ADMIN_PERM,
15325                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15326         },
15327 #endif
15328         {
15329                 .cmd = NL80211_CMD_CONNECT,
15330                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15331                 .doit = nl80211_connect,
15332                 .flags = GENL_UNS_ADMIN_PERM,
15333                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15334                                   0 |
15335                                   NL80211_FLAG_CLEAR_SKB,
15336         },
15337         {
15338                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15339                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15340                 .doit = nl80211_update_connect_params,
15341                 .flags = GENL_ADMIN_PERM,
15342                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15343                                   0 |
15344                                   NL80211_FLAG_CLEAR_SKB,
15345         },
15346         {
15347                 .cmd = NL80211_CMD_DISCONNECT,
15348                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15349                 .doit = nl80211_disconnect,
15350                 .flags = GENL_UNS_ADMIN_PERM,
15351                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15352         },
15353         {
15354                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15355                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15356                 .doit = nl80211_wiphy_netns,
15357                 .flags = GENL_UNS_ADMIN_PERM,
15358                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15359                                   NL80211_FLAG_NEED_RTNL |
15360                                   NL80211_FLAG_NO_WIPHY_MTX,
15361         },
15362         {
15363                 .cmd = NL80211_CMD_GET_SURVEY,
15364                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15365                 .dumpit = nl80211_dump_survey,
15366         },
15367         {
15368                 .cmd = NL80211_CMD_SET_PMKSA,
15369                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15370                 .doit = nl80211_setdel_pmksa,
15371                 .flags = GENL_UNS_ADMIN_PERM,
15372                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15373                                   0 |
15374                                   NL80211_FLAG_CLEAR_SKB,
15375         },
15376         {
15377                 .cmd = NL80211_CMD_DEL_PMKSA,
15378                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15379                 .doit = nl80211_setdel_pmksa,
15380                 .flags = GENL_UNS_ADMIN_PERM,
15381                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15382         },
15383         {
15384                 .cmd = NL80211_CMD_FLUSH_PMKSA,
15385                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15386                 .doit = nl80211_flush_pmksa,
15387                 .flags = GENL_UNS_ADMIN_PERM,
15388                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15389         },
15390         {
15391                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15392                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15393                 .doit = nl80211_remain_on_channel,
15394                 .flags = GENL_UNS_ADMIN_PERM,
15395                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15396         },
15397         {
15398                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15399                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15400                 .doit = nl80211_cancel_remain_on_channel,
15401                 .flags = GENL_UNS_ADMIN_PERM,
15402                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15403         },
15404         {
15405                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15406                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15407                 .doit = nl80211_set_tx_bitrate_mask,
15408                 .flags = GENL_UNS_ADMIN_PERM,
15409                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15410         },
15411         {
15412                 .cmd = NL80211_CMD_REGISTER_FRAME,
15413                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15414                 .doit = nl80211_register_mgmt,
15415                 .flags = GENL_UNS_ADMIN_PERM,
15416                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15417         },
15418         {
15419                 .cmd = NL80211_CMD_FRAME,
15420                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15421                 .doit = nl80211_tx_mgmt,
15422                 .flags = GENL_UNS_ADMIN_PERM,
15423                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15424         },
15425         {
15426                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15427                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15428                 .doit = nl80211_tx_mgmt_cancel_wait,
15429                 .flags = GENL_UNS_ADMIN_PERM,
15430                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15431         },
15432         {
15433                 .cmd = NL80211_CMD_SET_POWER_SAVE,
15434                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15435                 .doit = nl80211_set_power_save,
15436                 .flags = GENL_UNS_ADMIN_PERM,
15437                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15438         },
15439         {
15440                 .cmd = NL80211_CMD_GET_POWER_SAVE,
15441                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15442                 .doit = nl80211_get_power_save,
15443                 /* can be retrieved by unprivileged users */
15444                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15445         },
15446         {
15447                 .cmd = NL80211_CMD_SET_CQM,
15448                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15449                 .doit = nl80211_set_cqm,
15450                 .flags = GENL_UNS_ADMIN_PERM,
15451                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15452         },
15453         {
15454                 .cmd = NL80211_CMD_SET_CHANNEL,
15455                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15456                 .doit = nl80211_set_channel,
15457                 .flags = GENL_UNS_ADMIN_PERM,
15458                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15459         },
15460         {
15461                 .cmd = NL80211_CMD_JOIN_MESH,
15462                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15463                 .doit = nl80211_join_mesh,
15464                 .flags = GENL_UNS_ADMIN_PERM,
15465                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15466         },
15467         {
15468                 .cmd = NL80211_CMD_LEAVE_MESH,
15469                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15470                 .doit = nl80211_leave_mesh,
15471                 .flags = GENL_UNS_ADMIN_PERM,
15472                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15473         },
15474         {
15475                 .cmd = NL80211_CMD_JOIN_OCB,
15476                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15477                 .doit = nl80211_join_ocb,
15478                 .flags = GENL_UNS_ADMIN_PERM,
15479                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15480         },
15481         {
15482                 .cmd = NL80211_CMD_LEAVE_OCB,
15483                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15484                 .doit = nl80211_leave_ocb,
15485                 .flags = GENL_UNS_ADMIN_PERM,
15486                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15487         },
15488 #ifdef CONFIG_PM
15489         {
15490                 .cmd = NL80211_CMD_GET_WOWLAN,
15491                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15492                 .doit = nl80211_get_wowlan,
15493                 /* can be retrieved by unprivileged users */
15494                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15495         },
15496         {
15497                 .cmd = NL80211_CMD_SET_WOWLAN,
15498                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15499                 .doit = nl80211_set_wowlan,
15500                 .flags = GENL_UNS_ADMIN_PERM,
15501                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15502         },
15503 #endif
15504         {
15505                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15506                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15507                 .doit = nl80211_set_rekey_data,
15508                 .flags = GENL_UNS_ADMIN_PERM,
15509                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15510                                   0 |
15511                                   NL80211_FLAG_CLEAR_SKB,
15512         },
15513         {
15514                 .cmd = NL80211_CMD_TDLS_MGMT,
15515                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15516                 .doit = nl80211_tdls_mgmt,
15517                 .flags = GENL_UNS_ADMIN_PERM,
15518                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15519         },
15520         {
15521                 .cmd = NL80211_CMD_TDLS_OPER,
15522                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15523                 .doit = nl80211_tdls_oper,
15524                 .flags = GENL_UNS_ADMIN_PERM,
15525                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15526         },
15527         {
15528                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15529                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15530                 .doit = nl80211_register_unexpected_frame,
15531                 .flags = GENL_UNS_ADMIN_PERM,
15532                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15533         },
15534         {
15535                 .cmd = NL80211_CMD_PROBE_CLIENT,
15536                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15537                 .doit = nl80211_probe_client,
15538                 .flags = GENL_UNS_ADMIN_PERM,
15539                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15540         },
15541         {
15542                 .cmd = NL80211_CMD_REGISTER_BEACONS,
15543                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15544                 .doit = nl80211_register_beacons,
15545                 .flags = GENL_UNS_ADMIN_PERM,
15546                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15547         },
15548         {
15549                 .cmd = NL80211_CMD_SET_NOACK_MAP,
15550                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15551                 .doit = nl80211_set_noack_map,
15552                 .flags = GENL_UNS_ADMIN_PERM,
15553                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15554         },
15555         {
15556                 .cmd = NL80211_CMD_START_P2P_DEVICE,
15557                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15558                 .doit = nl80211_start_p2p_device,
15559                 .flags = GENL_UNS_ADMIN_PERM,
15560                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15561                                   NL80211_FLAG_NEED_RTNL,
15562         },
15563         {
15564                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15565                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15566                 .doit = nl80211_stop_p2p_device,
15567                 .flags = GENL_UNS_ADMIN_PERM,
15568                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15569                                   NL80211_FLAG_NEED_RTNL,
15570         },
15571         {
15572                 .cmd = NL80211_CMD_START_NAN,
15573                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15574                 .doit = nl80211_start_nan,
15575                 .flags = GENL_ADMIN_PERM,
15576                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15577                                   NL80211_FLAG_NEED_RTNL,
15578         },
15579         {
15580                 .cmd = NL80211_CMD_STOP_NAN,
15581                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15582                 .doit = nl80211_stop_nan,
15583                 .flags = GENL_ADMIN_PERM,
15584                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15585                                   NL80211_FLAG_NEED_RTNL,
15586         },
15587         {
15588                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15589                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15590                 .doit = nl80211_nan_add_func,
15591                 .flags = GENL_ADMIN_PERM,
15592                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15593         },
15594         {
15595                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15596                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15597                 .doit = nl80211_nan_del_func,
15598                 .flags = GENL_ADMIN_PERM,
15599                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15600         },
15601         {
15602                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15603                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15604                 .doit = nl80211_nan_change_config,
15605                 .flags = GENL_ADMIN_PERM,
15606                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15607         },
15608         {
15609                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15610                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15611                 .doit = nl80211_set_mcast_rate,
15612                 .flags = GENL_UNS_ADMIN_PERM,
15613                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15614         },
15615         {
15616                 .cmd = NL80211_CMD_SET_MAC_ACL,
15617                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15618                 .doit = nl80211_set_mac_acl,
15619                 .flags = GENL_UNS_ADMIN_PERM,
15620                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15621         },
15622         {
15623                 .cmd = NL80211_CMD_RADAR_DETECT,
15624                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15625                 .doit = nl80211_start_radar_detection,
15626                 .flags = GENL_UNS_ADMIN_PERM,
15627                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15628         },
15629         {
15630                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15631                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15632                 .doit = nl80211_get_protocol_features,
15633         },
15634         {
15635                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15636                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15637                 .doit = nl80211_update_ft_ies,
15638                 .flags = GENL_UNS_ADMIN_PERM,
15639                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15640         },
15641         {
15642                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15643                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15644                 .doit = nl80211_crit_protocol_start,
15645                 .flags = GENL_UNS_ADMIN_PERM,
15646                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15647         },
15648         {
15649                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15650                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15651                 .doit = nl80211_crit_protocol_stop,
15652                 .flags = GENL_UNS_ADMIN_PERM,
15653                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15654         },
15655         {
15656                 .cmd = NL80211_CMD_GET_COALESCE,
15657                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15658                 .doit = nl80211_get_coalesce,
15659                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15660         },
15661         {
15662                 .cmd = NL80211_CMD_SET_COALESCE,
15663                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15664                 .doit = nl80211_set_coalesce,
15665                 .flags = GENL_UNS_ADMIN_PERM,
15666                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15667         },
15668         {
15669                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15670                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15671                 .doit = nl80211_channel_switch,
15672                 .flags = GENL_UNS_ADMIN_PERM,
15673                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15674         },
15675         {
15676                 .cmd = NL80211_CMD_VENDOR,
15677                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15678                 .doit = nl80211_vendor_cmd,
15679                 .dumpit = nl80211_vendor_cmd_dump,
15680                 .flags = GENL_UNS_ADMIN_PERM,
15681                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15682                                   0 |
15683                                   NL80211_FLAG_CLEAR_SKB,
15684         },
15685         {
15686                 .cmd = NL80211_CMD_SET_QOS_MAP,
15687                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15688                 .doit = nl80211_set_qos_map,
15689                 .flags = GENL_UNS_ADMIN_PERM,
15690                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15691         },
15692         {
15693                 .cmd = NL80211_CMD_ADD_TX_TS,
15694                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15695                 .doit = nl80211_add_tx_ts,
15696                 .flags = GENL_UNS_ADMIN_PERM,
15697                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15698         },
15699         {
15700                 .cmd = NL80211_CMD_DEL_TX_TS,
15701                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15702                 .doit = nl80211_del_tx_ts,
15703                 .flags = GENL_UNS_ADMIN_PERM,
15704                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15705         },
15706         {
15707                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15708                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15709                 .doit = nl80211_tdls_channel_switch,
15710                 .flags = GENL_UNS_ADMIN_PERM,
15711                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15712         },
15713         {
15714                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15715                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15716                 .doit = nl80211_tdls_cancel_channel_switch,
15717                 .flags = GENL_UNS_ADMIN_PERM,
15718                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15719         },
15720         {
15721                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15722                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15723                 .doit = nl80211_set_multicast_to_unicast,
15724                 .flags = GENL_UNS_ADMIN_PERM,
15725                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15726         },
15727         {
15728                 .cmd = NL80211_CMD_SET_PMK,
15729                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15730                 .doit = nl80211_set_pmk,
15731                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15732                                   0 |
15733                                   NL80211_FLAG_CLEAR_SKB,
15734         },
15735         {
15736                 .cmd = NL80211_CMD_DEL_PMK,
15737                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15738                 .doit = nl80211_del_pmk,
15739                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15740         },
15741         {
15742                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15743                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15744                 .doit = nl80211_external_auth,
15745                 .flags = GENL_ADMIN_PERM,
15746                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15747         },
15748         {
15749                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15750                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15751                 .doit = nl80211_tx_control_port,
15752                 .flags = GENL_UNS_ADMIN_PERM,
15753                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15754         },
15755         {
15756                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15757                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15758                 .doit = nl80211_get_ftm_responder_stats,
15759                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15760         },
15761         {
15762                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15763                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15764                 .doit = nl80211_pmsr_start,
15765                 .flags = GENL_UNS_ADMIN_PERM,
15766                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15767         },
15768         {
15769                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15770                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15771                 .doit = nl80211_notify_radar_detection,
15772                 .flags = GENL_UNS_ADMIN_PERM,
15773                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15774         },
15775         {
15776                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15777                 .doit = nl80211_update_owe_info,
15778                 .flags = GENL_ADMIN_PERM,
15779                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15780         },
15781         {
15782                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15783                 .doit = nl80211_probe_mesh_link,
15784                 .flags = GENL_UNS_ADMIN_PERM,
15785                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15786         },
15787         {
15788                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15789                 .doit = nl80211_set_tid_config,
15790                 .flags = GENL_UNS_ADMIN_PERM,
15791                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15792         },
15793         {
15794                 .cmd = NL80211_CMD_SET_SAR_SPECS,
15795                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15796                 .doit = nl80211_set_sar_specs,
15797                 .flags = GENL_UNS_ADMIN_PERM,
15798                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15799                                   NL80211_FLAG_NEED_RTNL,
15800         },
15801 };
15802
15803 static struct genl_family nl80211_fam __ro_after_init = {
15804         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15805         .hdrsize = 0,                   /* no private header */
15806         .version = 1,                   /* no particular meaning now */
15807         .maxattr = NL80211_ATTR_MAX,
15808         .policy = nl80211_policy,
15809         .netnsok = true,
15810         .pre_doit = nl80211_pre_doit,
15811         .post_doit = nl80211_post_doit,
15812         .module = THIS_MODULE,
15813         .ops = nl80211_ops,
15814         .n_ops = ARRAY_SIZE(nl80211_ops),
15815         .small_ops = nl80211_small_ops,
15816         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15817         .mcgrps = nl80211_mcgrps,
15818         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15819         .parallel_ops = true,
15820 };
15821
15822 /* notification functions */
15823
15824 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15825                           enum nl80211_commands cmd)
15826 {
15827         struct sk_buff *msg;
15828         struct nl80211_dump_wiphy_state state = {};
15829
15830         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15831                 cmd != NL80211_CMD_DEL_WIPHY);
15832
15833         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15834         if (!msg)
15835                 return;
15836
15837         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15838                 nlmsg_free(msg);
15839                 return;
15840         }
15841
15842         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15843                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15844 }
15845
15846 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15847                                 struct wireless_dev *wdev,
15848                                 enum nl80211_commands cmd)
15849 {
15850         struct sk_buff *msg;
15851
15852         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15853         if (!msg)
15854                 return;
15855
15856         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15857                 nlmsg_free(msg);
15858                 return;
15859         }
15860
15861         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15862                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15863 }
15864
15865 static int nl80211_add_scan_req(struct sk_buff *msg,
15866                                 struct cfg80211_registered_device *rdev)
15867 {
15868         struct cfg80211_scan_request *req = rdev->scan_req;
15869         struct nlattr *nest;
15870         int i;
15871         struct cfg80211_scan_info *info;
15872
15873         if (WARN_ON(!req))
15874                 return 0;
15875
15876         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15877         if (!nest)
15878                 goto nla_put_failure;
15879         for (i = 0; i < req->n_ssids; i++) {
15880                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15881                         goto nla_put_failure;
15882         }
15883         nla_nest_end(msg, nest);
15884
15885         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15886                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15887                 if (!nest)
15888                         goto nla_put_failure;
15889                 for (i = 0; i < req->n_channels; i++) {
15890                         if (nla_put_u32(msg, i,
15891                                    ieee80211_channel_to_khz(req->channels[i])))
15892                                 goto nla_put_failure;
15893                 }
15894                 nla_nest_end(msg, nest);
15895         } else {
15896                 nest = nla_nest_start_noflag(msg,
15897                                              NL80211_ATTR_SCAN_FREQUENCIES);
15898                 if (!nest)
15899                         goto nla_put_failure;
15900                 for (i = 0; i < req->n_channels; i++) {
15901                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15902                                 goto nla_put_failure;
15903                 }
15904                 nla_nest_end(msg, nest);
15905         }
15906
15907         if (req->ie &&
15908             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15909                 goto nla_put_failure;
15910
15911         if (req->flags &&
15912             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15913                 goto nla_put_failure;
15914
15915         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15916                 &rdev->scan_req->info;
15917         if (info->scan_start_tsf &&
15918             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15919                                info->scan_start_tsf, NL80211_BSS_PAD) ||
15920              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15921                      info->tsf_bssid)))
15922                 goto nla_put_failure;
15923
15924         return 0;
15925  nla_put_failure:
15926         return -ENOBUFS;
15927 }
15928
15929 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15930                                  struct cfg80211_registered_device *rdev,
15931                                  struct wireless_dev *wdev,
15932                                  u32 portid, u32 seq, int flags,
15933                                  u32 cmd)
15934 {
15935         void *hdr;
15936
15937         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15938         if (!hdr)
15939                 return -1;
15940
15941         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15942             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15943                                          wdev->netdev->ifindex)) ||
15944             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15945                               NL80211_ATTR_PAD))
15946                 goto nla_put_failure;
15947
15948         /* ignore errors and send incomplete event anyway */
15949         nl80211_add_scan_req(msg, rdev);
15950
15951         genlmsg_end(msg, hdr);
15952         return 0;
15953
15954  nla_put_failure:
15955         genlmsg_cancel(msg, hdr);
15956         return -EMSGSIZE;
15957 }
15958
15959 static int
15960 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15961                             struct cfg80211_sched_scan_request *req, u32 cmd)
15962 {
15963         void *hdr;
15964
15965         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15966         if (!hdr)
15967                 return -1;
15968
15969         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15970                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15971             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15972             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15973                               NL80211_ATTR_PAD))
15974                 goto nla_put_failure;
15975
15976         genlmsg_end(msg, hdr);
15977         return 0;
15978
15979  nla_put_failure:
15980         genlmsg_cancel(msg, hdr);
15981         return -EMSGSIZE;
15982 }
15983
15984 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15985                              struct wireless_dev *wdev)
15986 {
15987         struct sk_buff *msg;
15988
15989         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15990         if (!msg)
15991                 return;
15992
15993         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15994                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15995                 nlmsg_free(msg);
15996                 return;
15997         }
15998
15999         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16000                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16001 }
16002
16003 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
16004                                        struct wireless_dev *wdev, bool aborted)
16005 {
16006         struct sk_buff *msg;
16007
16008         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16009         if (!msg)
16010                 return NULL;
16011
16012         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
16013                                   aborted ? NL80211_CMD_SCAN_ABORTED :
16014                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
16015                 nlmsg_free(msg);
16016                 return NULL;
16017         }
16018
16019         return msg;
16020 }
16021
16022 /* send message created by nl80211_build_scan_msg() */
16023 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
16024                            struct sk_buff *msg)
16025 {
16026         if (!msg)
16027                 return;
16028
16029         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16030                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16031 }
16032
16033 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
16034 {
16035         struct sk_buff *msg;
16036
16037         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16038         if (!msg)
16039                 return;
16040
16041         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
16042                 nlmsg_free(msg);
16043                 return;
16044         }
16045
16046         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
16047                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16048 }
16049
16050 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
16051                                           struct regulatory_request *request)
16052 {
16053         /* Userspace can always count this one always being set */
16054         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
16055                 goto nla_put_failure;
16056
16057         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
16058                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16059                                NL80211_REGDOM_TYPE_WORLD))
16060                         goto nla_put_failure;
16061         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
16062                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16063                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
16064                         goto nla_put_failure;
16065         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
16066                    request->intersect) {
16067                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16068                                NL80211_REGDOM_TYPE_INTERSECTION))
16069                         goto nla_put_failure;
16070         } else {
16071                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16072                                NL80211_REGDOM_TYPE_COUNTRY) ||
16073                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
16074                                    request->alpha2))
16075                         goto nla_put_failure;
16076         }
16077
16078         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
16079                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
16080
16081                 if (wiphy &&
16082                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
16083                         goto nla_put_failure;
16084
16085                 if (wiphy &&
16086                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
16087                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
16088                         goto nla_put_failure;
16089         }
16090
16091         return true;
16092
16093 nla_put_failure:
16094         return false;
16095 }
16096
16097 /*
16098  * This can happen on global regulatory changes or device specific settings
16099  * based on custom regulatory domains.
16100  */
16101 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
16102                                      struct regulatory_request *request)
16103 {
16104         struct sk_buff *msg;
16105         void *hdr;
16106
16107         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16108         if (!msg)
16109                 return;
16110
16111         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
16112         if (!hdr)
16113                 goto nla_put_failure;
16114
16115         if (!nl80211_reg_change_event_fill(msg, request))
16116                 goto nla_put_failure;
16117
16118         genlmsg_end(msg, hdr);
16119
16120         rcu_read_lock();
16121         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16122                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16123         rcu_read_unlock();
16124
16125         return;
16126
16127 nla_put_failure:
16128         nlmsg_free(msg);
16129 }
16130
16131 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
16132                                     struct net_device *netdev,
16133                                     const u8 *buf, size_t len,
16134                                     enum nl80211_commands cmd, gfp_t gfp,
16135                                     int uapsd_queues, const u8 *req_ies,
16136                                     size_t req_ies_len, bool reconnect)
16137 {
16138         struct sk_buff *msg;
16139         void *hdr;
16140
16141         msg = nlmsg_new(100 + len + req_ies_len, gfp);
16142         if (!msg)
16143                 return;
16144
16145         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16146         if (!hdr) {
16147                 nlmsg_free(msg);
16148                 return;
16149         }
16150
16151         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16152             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16153             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16154             (req_ies &&
16155              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
16156                 goto nla_put_failure;
16157
16158         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
16159                 goto nla_put_failure;
16160
16161         if (uapsd_queues >= 0) {
16162                 struct nlattr *nla_wmm =
16163                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
16164                 if (!nla_wmm)
16165                         goto nla_put_failure;
16166
16167                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
16168                                uapsd_queues))
16169                         goto nla_put_failure;
16170
16171                 nla_nest_end(msg, nla_wmm);
16172         }
16173
16174         genlmsg_end(msg, hdr);
16175
16176         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16177                                 NL80211_MCGRP_MLME, gfp);
16178         return;
16179
16180  nla_put_failure:
16181         nlmsg_free(msg);
16182 }
16183
16184 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
16185                           struct net_device *netdev, const u8 *buf,
16186                           size_t len, gfp_t gfp)
16187 {
16188         nl80211_send_mlme_event(rdev, netdev, buf, len,
16189                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
16190                                 false);
16191 }
16192
16193 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
16194                            struct net_device *netdev, const u8 *buf,
16195                            size_t len, gfp_t gfp, int uapsd_queues,
16196                            const u8 *req_ies, size_t req_ies_len)
16197 {
16198         nl80211_send_mlme_event(rdev, netdev, buf, len,
16199                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
16200                                 req_ies, req_ies_len, false);
16201 }
16202
16203 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
16204                          struct net_device *netdev, const u8 *buf,
16205                          size_t len, bool reconnect, gfp_t gfp)
16206 {
16207         nl80211_send_mlme_event(rdev, netdev, buf, len,
16208                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
16209                                 reconnect);
16210 }
16211
16212 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
16213                            struct net_device *netdev, const u8 *buf,
16214                            size_t len, bool reconnect, gfp_t gfp)
16215 {
16216         nl80211_send_mlme_event(rdev, netdev, buf, len,
16217                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
16218                                 reconnect);
16219 }
16220
16221 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
16222                                   size_t len)
16223 {
16224         struct wireless_dev *wdev = dev->ieee80211_ptr;
16225         struct wiphy *wiphy = wdev->wiphy;
16226         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16227         const struct ieee80211_mgmt *mgmt = (void *)buf;
16228         u32 cmd;
16229
16230         if (WARN_ON(len < 2))
16231                 return;
16232
16233         if (ieee80211_is_deauth(mgmt->frame_control)) {
16234                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
16235         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
16236                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
16237         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
16238                 if (wdev->unprot_beacon_reported &&
16239                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
16240                         return;
16241                 cmd = NL80211_CMD_UNPROT_BEACON;
16242                 wdev->unprot_beacon_reported = jiffies;
16243         } else {
16244                 return;
16245         }
16246
16247         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
16248         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
16249                                 NULL, 0, false);
16250 }
16251 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
16252
16253 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
16254                                       struct net_device *netdev, int cmd,
16255                                       const u8 *addr, gfp_t gfp)
16256 {
16257         struct sk_buff *msg;
16258         void *hdr;
16259
16260         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16261         if (!msg)
16262                 return;
16263
16264         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16265         if (!hdr) {
16266                 nlmsg_free(msg);
16267                 return;
16268         }
16269
16270         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16271             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16272             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16273             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16274                 goto nla_put_failure;
16275
16276         genlmsg_end(msg, hdr);
16277
16278         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16279                                 NL80211_MCGRP_MLME, gfp);
16280         return;
16281
16282  nla_put_failure:
16283         nlmsg_free(msg);
16284 }
16285
16286 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16287                                struct net_device *netdev, const u8 *addr,
16288                                gfp_t gfp)
16289 {
16290         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16291                                   addr, gfp);
16292 }
16293
16294 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16295                                 struct net_device *netdev, const u8 *addr,
16296                                 gfp_t gfp)
16297 {
16298         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16299                                   addr, gfp);
16300 }
16301
16302 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16303                                  struct net_device *netdev,
16304                                  struct cfg80211_connect_resp_params *cr,
16305                                  gfp_t gfp)
16306 {
16307         struct sk_buff *msg;
16308         void *hdr;
16309
16310         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16311                         cr->fils.kek_len + cr->fils.pmk_len +
16312                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16313         if (!msg)
16314                 return;
16315
16316         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16317         if (!hdr) {
16318                 nlmsg_free(msg);
16319                 return;
16320         }
16321
16322         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16323             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16324             (cr->bssid &&
16325              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16326             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16327                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16328                         cr->status) ||
16329             (cr->status < 0 &&
16330              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16331               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16332                           cr->timeout_reason))) ||
16333             (cr->req_ie &&
16334              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16335             (cr->resp_ie &&
16336              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16337                      cr->resp_ie)) ||
16338             (cr->fils.update_erp_next_seq_num &&
16339              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16340                          cr->fils.erp_next_seq_num)) ||
16341             (cr->status == WLAN_STATUS_SUCCESS &&
16342              ((cr->fils.kek &&
16343                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16344                        cr->fils.kek)) ||
16345               (cr->fils.pmk &&
16346                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16347               (cr->fils.pmkid &&
16348                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16349                 goto nla_put_failure;
16350
16351         genlmsg_end(msg, hdr);
16352
16353         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16354                                 NL80211_MCGRP_MLME, gfp);
16355         return;
16356
16357  nla_put_failure:
16358         nlmsg_free(msg);
16359 }
16360
16361 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16362                          struct net_device *netdev,
16363                          struct cfg80211_roam_info *info, gfp_t gfp)
16364 {
16365         struct sk_buff *msg;
16366         void *hdr;
16367         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16368
16369         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16370                         info->fils.kek_len + info->fils.pmk_len +
16371                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16372         if (!msg)
16373                 return;
16374
16375         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16376         if (!hdr) {
16377                 nlmsg_free(msg);
16378                 return;
16379         }
16380
16381         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16382             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16383             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16384             (info->req_ie &&
16385              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16386                      info->req_ie)) ||
16387             (info->resp_ie &&
16388              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16389                      info->resp_ie)) ||
16390             (info->fils.update_erp_next_seq_num &&
16391              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16392                          info->fils.erp_next_seq_num)) ||
16393             (info->fils.kek &&
16394              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16395                      info->fils.kek)) ||
16396             (info->fils.pmk &&
16397              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16398             (info->fils.pmkid &&
16399              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16400                 goto nla_put_failure;
16401
16402         genlmsg_end(msg, hdr);
16403
16404         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16405                                 NL80211_MCGRP_MLME, gfp);
16406         return;
16407
16408  nla_put_failure:
16409         nlmsg_free(msg);
16410 }
16411
16412 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16413                                   struct net_device *netdev, const u8 *bssid)
16414 {
16415         struct sk_buff *msg;
16416         void *hdr;
16417
16418         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16419         if (!msg)
16420                 return;
16421
16422         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16423         if (!hdr) {
16424                 nlmsg_free(msg);
16425                 return;
16426         }
16427
16428         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16429             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16430             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16431                 goto nla_put_failure;
16432
16433         genlmsg_end(msg, hdr);
16434
16435         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16436                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16437         return;
16438
16439  nla_put_failure:
16440         nlmsg_free(msg);
16441 }
16442
16443 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16444                                struct net_device *netdev, u16 reason,
16445                                const u8 *ie, size_t ie_len, bool from_ap)
16446 {
16447         struct sk_buff *msg;
16448         void *hdr;
16449
16450         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16451         if (!msg)
16452                 return;
16453
16454         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16455         if (!hdr) {
16456                 nlmsg_free(msg);
16457                 return;
16458         }
16459
16460         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16461             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16462             (reason &&
16463              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16464             (from_ap &&
16465              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16466             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16467                 goto nla_put_failure;
16468
16469         genlmsg_end(msg, hdr);
16470
16471         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16472                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16473         return;
16474
16475  nla_put_failure:
16476         nlmsg_free(msg);
16477 }
16478
16479 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16480                              struct net_device *netdev, const u8 *bssid,
16481                              gfp_t gfp)
16482 {
16483         struct sk_buff *msg;
16484         void *hdr;
16485
16486         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16487         if (!msg)
16488                 return;
16489
16490         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16491         if (!hdr) {
16492                 nlmsg_free(msg);
16493                 return;
16494         }
16495
16496         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16497             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16498             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16499                 goto nla_put_failure;
16500
16501         genlmsg_end(msg, hdr);
16502
16503         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16504                                 NL80211_MCGRP_MLME, gfp);
16505         return;
16506
16507  nla_put_failure:
16508         nlmsg_free(msg);
16509 }
16510
16511 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16512                                         const u8 *ie, u8 ie_len,
16513                                         int sig_dbm, gfp_t gfp)
16514 {
16515         struct wireless_dev *wdev = dev->ieee80211_ptr;
16516         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16517         struct sk_buff *msg;
16518         void *hdr;
16519
16520         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16521                 return;
16522
16523         trace_cfg80211_notify_new_peer_candidate(dev, addr);
16524
16525         msg = nlmsg_new(100 + ie_len, gfp);
16526         if (!msg)
16527                 return;
16528
16529         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16530         if (!hdr) {
16531                 nlmsg_free(msg);
16532                 return;
16533         }
16534
16535         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16536             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16537             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16538             (ie_len && ie &&
16539              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16540             (sig_dbm &&
16541              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16542                 goto nla_put_failure;
16543
16544         genlmsg_end(msg, hdr);
16545
16546         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16547                                 NL80211_MCGRP_MLME, gfp);
16548         return;
16549
16550  nla_put_failure:
16551         nlmsg_free(msg);
16552 }
16553 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16554
16555 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16556                                  struct net_device *netdev, const u8 *addr,
16557                                  enum nl80211_key_type key_type, int key_id,
16558                                  const u8 *tsc, gfp_t gfp)
16559 {
16560         struct sk_buff *msg;
16561         void *hdr;
16562
16563         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16564         if (!msg)
16565                 return;
16566
16567         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16568         if (!hdr) {
16569                 nlmsg_free(msg);
16570                 return;
16571         }
16572
16573         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16574             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16575             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16576             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16577             (key_id != -1 &&
16578              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16579             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16580                 goto nla_put_failure;
16581
16582         genlmsg_end(msg, hdr);
16583
16584         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16585                                 NL80211_MCGRP_MLME, gfp);
16586         return;
16587
16588  nla_put_failure:
16589         nlmsg_free(msg);
16590 }
16591
16592 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16593                                     struct ieee80211_channel *channel_before,
16594                                     struct ieee80211_channel *channel_after)
16595 {
16596         struct sk_buff *msg;
16597         void *hdr;
16598         struct nlattr *nl_freq;
16599
16600         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16601         if (!msg)
16602                 return;
16603
16604         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16605         if (!hdr) {
16606                 nlmsg_free(msg);
16607                 return;
16608         }
16609
16610         /*
16611          * Since we are applying the beacon hint to a wiphy we know its
16612          * wiphy_idx is valid
16613          */
16614         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16615                 goto nla_put_failure;
16616
16617         /* Before */
16618         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16619         if (!nl_freq)
16620                 goto nla_put_failure;
16621
16622         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16623                 goto nla_put_failure;
16624         nla_nest_end(msg, nl_freq);
16625
16626         /* After */
16627         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16628         if (!nl_freq)
16629                 goto nla_put_failure;
16630
16631         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16632                 goto nla_put_failure;
16633         nla_nest_end(msg, nl_freq);
16634
16635         genlmsg_end(msg, hdr);
16636
16637         rcu_read_lock();
16638         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16639                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16640         rcu_read_unlock();
16641
16642         return;
16643
16644 nla_put_failure:
16645         nlmsg_free(msg);
16646 }
16647
16648 static void nl80211_send_remain_on_chan_event(
16649         int cmd, struct cfg80211_registered_device *rdev,
16650         struct wireless_dev *wdev, u64 cookie,
16651         struct ieee80211_channel *chan,
16652         unsigned int duration, gfp_t gfp)
16653 {
16654         struct sk_buff *msg;
16655         void *hdr;
16656
16657         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16658         if (!msg)
16659                 return;
16660
16661         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16662         if (!hdr) {
16663                 nlmsg_free(msg);
16664                 return;
16665         }
16666
16667         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16668             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16669                                          wdev->netdev->ifindex)) ||
16670             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16671                               NL80211_ATTR_PAD) ||
16672             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16673             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16674                         NL80211_CHAN_NO_HT) ||
16675             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16676                               NL80211_ATTR_PAD))
16677                 goto nla_put_failure;
16678
16679         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16680             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16681                 goto nla_put_failure;
16682
16683         genlmsg_end(msg, hdr);
16684
16685         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16686                                 NL80211_MCGRP_MLME, gfp);
16687         return;
16688
16689  nla_put_failure:
16690         nlmsg_free(msg);
16691 }
16692
16693 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16694                                struct ieee80211_channel *chan,
16695                                unsigned int duration, gfp_t gfp)
16696 {
16697         struct wiphy *wiphy = wdev->wiphy;
16698         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16699
16700         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16701         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16702                                           rdev, wdev, cookie, chan,
16703                                           duration, gfp);
16704 }
16705 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16706
16707 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16708                                         struct ieee80211_channel *chan,
16709                                         gfp_t gfp)
16710 {
16711         struct wiphy *wiphy = wdev->wiphy;
16712         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16713
16714         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16715         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16716                                           rdev, wdev, cookie, chan, 0, gfp);
16717 }
16718 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16719
16720 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16721                                         struct ieee80211_channel *chan,
16722                                         gfp_t gfp)
16723 {
16724         struct wiphy *wiphy = wdev->wiphy;
16725         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16726
16727         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16728         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16729                                           rdev, wdev, cookie, chan, 0, gfp);
16730 }
16731 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16732
16733 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16734                       struct station_info *sinfo, gfp_t gfp)
16735 {
16736         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16737         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16738         struct sk_buff *msg;
16739
16740         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16741
16742         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16743         if (!msg)
16744                 return;
16745
16746         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16747                                  rdev, dev, mac_addr, sinfo) < 0) {
16748                 nlmsg_free(msg);
16749                 return;
16750         }
16751
16752         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16753                                 NL80211_MCGRP_MLME, gfp);
16754 }
16755 EXPORT_SYMBOL(cfg80211_new_sta);
16756
16757 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16758                             struct station_info *sinfo, gfp_t gfp)
16759 {
16760         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16761         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16762         struct sk_buff *msg;
16763         struct station_info empty_sinfo = {};
16764
16765         if (!sinfo)
16766                 sinfo = &empty_sinfo;
16767
16768         trace_cfg80211_del_sta(dev, mac_addr);
16769
16770         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16771         if (!msg) {
16772                 cfg80211_sinfo_release_content(sinfo);
16773                 return;
16774         }
16775
16776         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16777                                  rdev, dev, mac_addr, sinfo) < 0) {
16778                 nlmsg_free(msg);
16779                 return;
16780         }
16781
16782         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16783                                 NL80211_MCGRP_MLME, gfp);
16784 }
16785 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16786
16787 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16788                           enum nl80211_connect_failed_reason reason,
16789                           gfp_t gfp)
16790 {
16791         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16792         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16793         struct sk_buff *msg;
16794         void *hdr;
16795
16796         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16797         if (!msg)
16798                 return;
16799
16800         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16801         if (!hdr) {
16802                 nlmsg_free(msg);
16803                 return;
16804         }
16805
16806         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16807             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16808             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16809                 goto nla_put_failure;
16810
16811         genlmsg_end(msg, hdr);
16812
16813         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16814                                 NL80211_MCGRP_MLME, gfp);
16815         return;
16816
16817  nla_put_failure:
16818         nlmsg_free(msg);
16819 }
16820 EXPORT_SYMBOL(cfg80211_conn_failed);
16821
16822 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16823                                        const u8 *addr, gfp_t gfp)
16824 {
16825         struct wireless_dev *wdev = dev->ieee80211_ptr;
16826         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16827         struct sk_buff *msg;
16828         void *hdr;
16829         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16830
16831         if (!nlportid)
16832                 return false;
16833
16834         msg = nlmsg_new(100, gfp);
16835         if (!msg)
16836                 return true;
16837
16838         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16839         if (!hdr) {
16840                 nlmsg_free(msg);
16841                 return true;
16842         }
16843
16844         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16845             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16846             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16847                 goto nla_put_failure;
16848
16849         genlmsg_end(msg, hdr);
16850         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16851         return true;
16852
16853  nla_put_failure:
16854         nlmsg_free(msg);
16855         return true;
16856 }
16857
16858 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16859                                 const u8 *addr, gfp_t gfp)
16860 {
16861         struct wireless_dev *wdev = dev->ieee80211_ptr;
16862         bool ret;
16863
16864         trace_cfg80211_rx_spurious_frame(dev, addr);
16865
16866         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16867                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16868                 trace_cfg80211_return_bool(false);
16869                 return false;
16870         }
16871         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16872                                          addr, gfp);
16873         trace_cfg80211_return_bool(ret);
16874         return ret;
16875 }
16876 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16877
16878 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16879                                         const u8 *addr, gfp_t gfp)
16880 {
16881         struct wireless_dev *wdev = dev->ieee80211_ptr;
16882         bool ret;
16883
16884         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16885
16886         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16887                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16888                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16889                 trace_cfg80211_return_bool(false);
16890                 return false;
16891         }
16892         ret = __nl80211_unexpected_frame(dev,
16893                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16894                                          addr, gfp);
16895         trace_cfg80211_return_bool(ret);
16896         return ret;
16897 }
16898 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16899
16900 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16901                       struct wireless_dev *wdev, u32 nlportid,
16902                       int freq, int sig_dbm,
16903                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16904 {
16905         struct net_device *netdev = wdev->netdev;
16906         struct sk_buff *msg;
16907         void *hdr;
16908
16909         msg = nlmsg_new(100 + len, gfp);
16910         if (!msg)
16911                 return -ENOMEM;
16912
16913         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16914         if (!hdr) {
16915                 nlmsg_free(msg);
16916                 return -ENOMEM;
16917         }
16918
16919         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16920             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16921                                         netdev->ifindex)) ||
16922             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16923                               NL80211_ATTR_PAD) ||
16924             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16925             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16926             (sig_dbm &&
16927              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16928             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16929             (flags &&
16930              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16931                 goto nla_put_failure;
16932
16933         genlmsg_end(msg, hdr);
16934
16935         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16936
16937  nla_put_failure:
16938         nlmsg_free(msg);
16939         return -ENOBUFS;
16940 }
16941
16942 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16943                                     const u8 *buf, size_t len, bool ack,
16944                                     gfp_t gfp, enum nl80211_commands command)
16945 {
16946         struct wiphy *wiphy = wdev->wiphy;
16947         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16948         struct net_device *netdev = wdev->netdev;
16949         struct sk_buff *msg;
16950         void *hdr;
16951
16952         if (command == NL80211_CMD_FRAME_TX_STATUS)
16953                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16954         else
16955                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16956
16957         msg = nlmsg_new(100 + len, gfp);
16958         if (!msg)
16959                 return;
16960
16961         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16962         if (!hdr) {
16963                 nlmsg_free(msg);
16964                 return;
16965         }
16966
16967         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16968             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16969                                    netdev->ifindex)) ||
16970             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16971                               NL80211_ATTR_PAD) ||
16972             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16973             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16974                               NL80211_ATTR_PAD) ||
16975             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16976                 goto nla_put_failure;
16977
16978         genlmsg_end(msg, hdr);
16979
16980         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16981                                 NL80211_MCGRP_MLME, gfp);
16982         return;
16983
16984 nla_put_failure:
16985         nlmsg_free(msg);
16986 }
16987
16988 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16989                                      const u8 *buf, size_t len, bool ack,
16990                                      gfp_t gfp)
16991 {
16992         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16993                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16994 }
16995 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16996
16997 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16998                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16999 {
17000         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
17001                                 NL80211_CMD_FRAME_TX_STATUS);
17002 }
17003 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
17004
17005 static int __nl80211_rx_control_port(struct net_device *dev,
17006                                      struct sk_buff *skb,
17007                                      bool unencrypted, gfp_t gfp)
17008 {
17009         struct wireless_dev *wdev = dev->ieee80211_ptr;
17010         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17011         struct ethhdr *ehdr = eth_hdr(skb);
17012         const u8 *addr = ehdr->h_source;
17013         u16 proto = be16_to_cpu(skb->protocol);
17014         struct sk_buff *msg;
17015         void *hdr;
17016         struct nlattr *frame;
17017
17018         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
17019
17020         if (!nlportid)
17021                 return -ENOENT;
17022
17023         msg = nlmsg_new(100 + skb->len, gfp);
17024         if (!msg)
17025                 return -ENOMEM;
17026
17027         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
17028         if (!hdr) {
17029                 nlmsg_free(msg);
17030                 return -ENOBUFS;
17031         }
17032
17033         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17034             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17035             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17036                               NL80211_ATTR_PAD) ||
17037             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17038             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
17039             (unencrypted && nla_put_flag(msg,
17040                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
17041                 goto nla_put_failure;
17042
17043         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
17044         if (!frame)
17045                 goto nla_put_failure;
17046
17047         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
17048         genlmsg_end(msg, hdr);
17049
17050         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17051
17052  nla_put_failure:
17053         nlmsg_free(msg);
17054         return -ENOBUFS;
17055 }
17056
17057 bool cfg80211_rx_control_port(struct net_device *dev,
17058                               struct sk_buff *skb, bool unencrypted)
17059 {
17060         int ret;
17061
17062         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
17063         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
17064         trace_cfg80211_return_bool(ret == 0);
17065         return ret == 0;
17066 }
17067 EXPORT_SYMBOL(cfg80211_rx_control_port);
17068
17069 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
17070                                             const char *mac, gfp_t gfp)
17071 {
17072         struct wireless_dev *wdev = dev->ieee80211_ptr;
17073         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17074         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17075         void **cb;
17076
17077         if (!msg)
17078                 return NULL;
17079
17080         cb = (void **)msg->cb;
17081
17082         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
17083         if (!cb[0]) {
17084                 nlmsg_free(msg);
17085                 return NULL;
17086         }
17087
17088         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17089             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17090                 goto nla_put_failure;
17091
17092         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17093                 goto nla_put_failure;
17094
17095         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
17096         if (!cb[1])
17097                 goto nla_put_failure;
17098
17099         cb[2] = rdev;
17100
17101         return msg;
17102  nla_put_failure:
17103         nlmsg_free(msg);
17104         return NULL;
17105 }
17106
17107 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
17108 {
17109         void **cb = (void **)msg->cb;
17110         struct cfg80211_registered_device *rdev = cb[2];
17111
17112         nla_nest_end(msg, cb[1]);
17113         genlmsg_end(msg, cb[0]);
17114
17115         memset(msg->cb, 0, sizeof(msg->cb));
17116
17117         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17118                                 NL80211_MCGRP_MLME, gfp);
17119 }
17120
17121 void cfg80211_cqm_rssi_notify(struct net_device *dev,
17122                               enum nl80211_cqm_rssi_threshold_event rssi_event,
17123                               s32 rssi_level, gfp_t gfp)
17124 {
17125         struct sk_buff *msg;
17126         struct wireless_dev *wdev = dev->ieee80211_ptr;
17127         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17128
17129         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
17130
17131         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
17132                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
17133                 return;
17134
17135         if (wdev->cqm_config) {
17136                 wdev->cqm_config->last_rssi_event_value = rssi_level;
17137
17138                 cfg80211_cqm_rssi_update(rdev, dev);
17139
17140                 if (rssi_level == 0)
17141                         rssi_level = wdev->cqm_config->last_rssi_event_value;
17142         }
17143
17144         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17145         if (!msg)
17146                 return;
17147
17148         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
17149                         rssi_event))
17150                 goto nla_put_failure;
17151
17152         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
17153                                       rssi_level))
17154                 goto nla_put_failure;
17155
17156         cfg80211_send_cqm(msg, gfp);
17157
17158         return;
17159
17160  nla_put_failure:
17161         nlmsg_free(msg);
17162 }
17163 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
17164
17165 void cfg80211_cqm_txe_notify(struct net_device *dev,
17166                              const u8 *peer, u32 num_packets,
17167                              u32 rate, u32 intvl, gfp_t gfp)
17168 {
17169         struct sk_buff *msg;
17170
17171         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17172         if (!msg)
17173                 return;
17174
17175         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
17176                 goto nla_put_failure;
17177
17178         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
17179                 goto nla_put_failure;
17180
17181         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
17182                 goto nla_put_failure;
17183
17184         cfg80211_send_cqm(msg, gfp);
17185         return;
17186
17187  nla_put_failure:
17188         nlmsg_free(msg);
17189 }
17190 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
17191
17192 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
17193                                  const u8 *peer, u32 num_packets, gfp_t gfp)
17194 {
17195         struct sk_buff *msg;
17196
17197         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
17198
17199         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17200         if (!msg)
17201                 return;
17202
17203         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
17204                 goto nla_put_failure;
17205
17206         cfg80211_send_cqm(msg, gfp);
17207         return;
17208
17209  nla_put_failure:
17210         nlmsg_free(msg);
17211 }
17212 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
17213
17214 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
17215 {
17216         struct sk_buff *msg;
17217
17218         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17219         if (!msg)
17220                 return;
17221
17222         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
17223                 goto nla_put_failure;
17224
17225         cfg80211_send_cqm(msg, gfp);
17226         return;
17227
17228  nla_put_failure:
17229         nlmsg_free(msg);
17230 }
17231 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
17232
17233 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
17234                                      struct net_device *netdev, const u8 *bssid,
17235                                      const u8 *replay_ctr, gfp_t gfp)
17236 {
17237         struct sk_buff *msg;
17238         struct nlattr *rekey_attr;
17239         void *hdr;
17240
17241         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17242         if (!msg)
17243                 return;
17244
17245         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
17246         if (!hdr) {
17247                 nlmsg_free(msg);
17248                 return;
17249         }
17250
17251         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17252             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17253             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17254                 goto nla_put_failure;
17255
17256         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
17257         if (!rekey_attr)
17258                 goto nla_put_failure;
17259
17260         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
17261                     NL80211_REPLAY_CTR_LEN, replay_ctr))
17262                 goto nla_put_failure;
17263
17264         nla_nest_end(msg, rekey_attr);
17265
17266         genlmsg_end(msg, hdr);
17267
17268         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17269                                 NL80211_MCGRP_MLME, gfp);
17270         return;
17271
17272  nla_put_failure:
17273         nlmsg_free(msg);
17274 }
17275
17276 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
17277                                const u8 *replay_ctr, gfp_t gfp)
17278 {
17279         struct wireless_dev *wdev = dev->ieee80211_ptr;
17280         struct wiphy *wiphy = wdev->wiphy;
17281         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17282
17283         trace_cfg80211_gtk_rekey_notify(dev, bssid);
17284         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17285 }
17286 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17287
17288 static void
17289 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17290                                struct net_device *netdev, int index,
17291                                const u8 *bssid, bool preauth, gfp_t gfp)
17292 {
17293         struct sk_buff *msg;
17294         struct nlattr *attr;
17295         void *hdr;
17296
17297         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17298         if (!msg)
17299                 return;
17300
17301         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17302         if (!hdr) {
17303                 nlmsg_free(msg);
17304                 return;
17305         }
17306
17307         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17308             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17309                 goto nla_put_failure;
17310
17311         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17312         if (!attr)
17313                 goto nla_put_failure;
17314
17315         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17316             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17317             (preauth &&
17318              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17319                 goto nla_put_failure;
17320
17321         nla_nest_end(msg, attr);
17322
17323         genlmsg_end(msg, hdr);
17324
17325         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17326                                 NL80211_MCGRP_MLME, gfp);
17327         return;
17328
17329  nla_put_failure:
17330         nlmsg_free(msg);
17331 }
17332
17333 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17334                                      const u8 *bssid, bool preauth, gfp_t gfp)
17335 {
17336         struct wireless_dev *wdev = dev->ieee80211_ptr;
17337         struct wiphy *wiphy = wdev->wiphy;
17338         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17339
17340         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17341         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17342 }
17343 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17344
17345 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17346                                      struct net_device *netdev,
17347                                      struct cfg80211_chan_def *chandef,
17348                                      gfp_t gfp,
17349                                      enum nl80211_commands notif,
17350                                      u8 count, bool quiet)
17351 {
17352         struct sk_buff *msg;
17353         void *hdr;
17354
17355         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17356         if (!msg)
17357                 return;
17358
17359         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17360         if (!hdr) {
17361                 nlmsg_free(msg);
17362                 return;
17363         }
17364
17365         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17366                 goto nla_put_failure;
17367
17368         if (nl80211_send_chandef(msg, chandef))
17369                 goto nla_put_failure;
17370
17371         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
17372                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
17373                         goto nla_put_failure;
17374                 if (quiet &&
17375                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
17376                         goto nla_put_failure;
17377         }
17378
17379         genlmsg_end(msg, hdr);
17380
17381         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17382                                 NL80211_MCGRP_MLME, gfp);
17383         return;
17384
17385  nla_put_failure:
17386         nlmsg_free(msg);
17387 }
17388
17389 void cfg80211_ch_switch_notify(struct net_device *dev,
17390                                struct cfg80211_chan_def *chandef)
17391 {
17392         struct wireless_dev *wdev = dev->ieee80211_ptr;
17393         struct wiphy *wiphy = wdev->wiphy;
17394         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17395
17396         ASSERT_WDEV_LOCK(wdev);
17397
17398         trace_cfg80211_ch_switch_notify(dev, chandef);
17399
17400         wdev->chandef = *chandef;
17401         wdev->preset_chandef = *chandef;
17402
17403         if (wdev->iftype == NL80211_IFTYPE_STATION &&
17404             !WARN_ON(!wdev->current_bss))
17405                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17406
17407         cfg80211_sched_dfs_chan_update(rdev);
17408
17409         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17410                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
17411 }
17412 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17413
17414 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17415                                        struct cfg80211_chan_def *chandef,
17416                                        u8 count, bool quiet)
17417 {
17418         struct wireless_dev *wdev = dev->ieee80211_ptr;
17419         struct wiphy *wiphy = wdev->wiphy;
17420         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17421
17422         trace_cfg80211_ch_switch_started_notify(dev, chandef);
17423
17424         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17425                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
17426                                  count, quiet);
17427 }
17428 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17429
17430 void
17431 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17432                      const struct cfg80211_chan_def *chandef,
17433                      enum nl80211_radar_event event,
17434                      struct net_device *netdev, gfp_t gfp)
17435 {
17436         struct sk_buff *msg;
17437         void *hdr;
17438
17439         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17440         if (!msg)
17441                 return;
17442
17443         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17444         if (!hdr) {
17445                 nlmsg_free(msg);
17446                 return;
17447         }
17448
17449         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17450                 goto nla_put_failure;
17451
17452         /* NOP and radar events don't need a netdev parameter */
17453         if (netdev) {
17454                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17455
17456                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17457                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17458                                       NL80211_ATTR_PAD))
17459                         goto nla_put_failure;
17460         }
17461
17462         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17463                 goto nla_put_failure;
17464
17465         if (nl80211_send_chandef(msg, chandef))
17466                 goto nla_put_failure;
17467
17468         genlmsg_end(msg, hdr);
17469
17470         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17471                                 NL80211_MCGRP_MLME, gfp);
17472         return;
17473
17474  nla_put_failure:
17475         nlmsg_free(msg);
17476 }
17477
17478 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17479                                        struct sta_opmode_info *sta_opmode,
17480                                        gfp_t gfp)
17481 {
17482         struct sk_buff *msg;
17483         struct wireless_dev *wdev = dev->ieee80211_ptr;
17484         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17485         void *hdr;
17486
17487         if (WARN_ON(!mac))
17488                 return;
17489
17490         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17491         if (!msg)
17492                 return;
17493
17494         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17495         if (!hdr) {
17496                 nlmsg_free(msg);
17497                 return;
17498         }
17499
17500         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17501                 goto nla_put_failure;
17502
17503         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17504                 goto nla_put_failure;
17505
17506         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17507                 goto nla_put_failure;
17508
17509         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17510             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17511                 goto nla_put_failure;
17512
17513         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17514             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17515                 goto nla_put_failure;
17516
17517         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17518             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17519                 goto nla_put_failure;
17520
17521         genlmsg_end(msg, hdr);
17522
17523         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17524                                 NL80211_MCGRP_MLME, gfp);
17525
17526         return;
17527
17528 nla_put_failure:
17529         nlmsg_free(msg);
17530 }
17531 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17532
17533 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17534                            u64 cookie, bool acked, s32 ack_signal,
17535                            bool is_valid_ack_signal, gfp_t gfp)
17536 {
17537         struct wireless_dev *wdev = dev->ieee80211_ptr;
17538         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17539         struct sk_buff *msg;
17540         void *hdr;
17541
17542         trace_cfg80211_probe_status(dev, addr, cookie, acked);
17543
17544         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17545
17546         if (!msg)
17547                 return;
17548
17549         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17550         if (!hdr) {
17551                 nlmsg_free(msg);
17552                 return;
17553         }
17554
17555         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17556             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17557             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17558             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17559                               NL80211_ATTR_PAD) ||
17560             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17561             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17562                                                 ack_signal)))
17563                 goto nla_put_failure;
17564
17565         genlmsg_end(msg, hdr);
17566
17567         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17568                                 NL80211_MCGRP_MLME, gfp);
17569         return;
17570
17571  nla_put_failure:
17572         nlmsg_free(msg);
17573 }
17574 EXPORT_SYMBOL(cfg80211_probe_status);
17575
17576 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17577                                      size_t len, int freq, int sig_dbm)
17578 {
17579         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17580         struct sk_buff *msg;
17581         void *hdr;
17582         struct cfg80211_beacon_registration *reg;
17583
17584         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17585
17586         spin_lock_bh(&rdev->beacon_registrations_lock);
17587         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17588                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17589                 if (!msg) {
17590                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17591                         return;
17592                 }
17593
17594                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17595                 if (!hdr)
17596                         goto nla_put_failure;
17597
17598                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17599                     (freq &&
17600                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17601                                   KHZ_TO_MHZ(freq)) ||
17602                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17603                                   freq % 1000))) ||
17604                     (sig_dbm &&
17605                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17606                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17607                         goto nla_put_failure;
17608
17609                 genlmsg_end(msg, hdr);
17610
17611                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17612         }
17613         spin_unlock_bh(&rdev->beacon_registrations_lock);
17614         return;
17615
17616  nla_put_failure:
17617         spin_unlock_bh(&rdev->beacon_registrations_lock);
17618         nlmsg_free(msg);
17619 }
17620 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17621
17622 #ifdef CONFIG_PM
17623 static int cfg80211_net_detect_results(struct sk_buff *msg,
17624                                        struct cfg80211_wowlan_wakeup *wakeup)
17625 {
17626         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17627         struct nlattr *nl_results, *nl_match, *nl_freqs;
17628         int i, j;
17629
17630         nl_results = nla_nest_start_noflag(msg,
17631                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17632         if (!nl_results)
17633                 return -EMSGSIZE;
17634
17635         for (i = 0; i < nd->n_matches; i++) {
17636                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17637
17638                 nl_match = nla_nest_start_noflag(msg, i);
17639                 if (!nl_match)
17640                         break;
17641
17642                 /* The SSID attribute is optional in nl80211, but for
17643                  * simplicity reasons it's always present in the
17644                  * cfg80211 structure.  If a driver can't pass the
17645                  * SSID, that needs to be changed.  A zero length SSID
17646                  * is still a valid SSID (wildcard), so it cannot be
17647                  * used for this purpose.
17648                  */
17649                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17650                             match->ssid.ssid)) {
17651                         nla_nest_cancel(msg, nl_match);
17652                         goto out;
17653                 }
17654
17655                 if (match->n_channels) {
17656                         nl_freqs = nla_nest_start_noflag(msg,
17657                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17658                         if (!nl_freqs) {
17659                                 nla_nest_cancel(msg, nl_match);
17660                                 goto out;
17661                         }
17662
17663                         for (j = 0; j < match->n_channels; j++) {
17664                                 if (nla_put_u32(msg, j, match->channels[j])) {
17665                                         nla_nest_cancel(msg, nl_freqs);
17666                                         nla_nest_cancel(msg, nl_match);
17667                                         goto out;
17668                                 }
17669                         }
17670
17671                         nla_nest_end(msg, nl_freqs);
17672                 }
17673
17674                 nla_nest_end(msg, nl_match);
17675         }
17676
17677 out:
17678         nla_nest_end(msg, nl_results);
17679         return 0;
17680 }
17681
17682 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17683                                    struct cfg80211_wowlan_wakeup *wakeup,
17684                                    gfp_t gfp)
17685 {
17686         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17687         struct sk_buff *msg;
17688         void *hdr;
17689         int size = 200;
17690
17691         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17692
17693         if (wakeup)
17694                 size += wakeup->packet_present_len;
17695
17696         msg = nlmsg_new(size, gfp);
17697         if (!msg)
17698                 return;
17699
17700         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17701         if (!hdr)
17702                 goto free_msg;
17703
17704         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17705             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17706                               NL80211_ATTR_PAD))
17707                 goto free_msg;
17708
17709         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17710                                         wdev->netdev->ifindex))
17711                 goto free_msg;
17712
17713         if (wakeup) {
17714                 struct nlattr *reasons;
17715
17716                 reasons = nla_nest_start_noflag(msg,
17717                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17718                 if (!reasons)
17719                         goto free_msg;
17720
17721                 if (wakeup->disconnect &&
17722                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17723                         goto free_msg;
17724                 if (wakeup->magic_pkt &&
17725                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17726                         goto free_msg;
17727                 if (wakeup->gtk_rekey_failure &&
17728                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17729                         goto free_msg;
17730                 if (wakeup->eap_identity_req &&
17731                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17732                         goto free_msg;
17733                 if (wakeup->four_way_handshake &&
17734                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17735                         goto free_msg;
17736                 if (wakeup->rfkill_release &&
17737                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17738                         goto free_msg;
17739
17740                 if (wakeup->pattern_idx >= 0 &&
17741                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17742                                 wakeup->pattern_idx))
17743                         goto free_msg;
17744
17745                 if (wakeup->tcp_match &&
17746                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17747                         goto free_msg;
17748
17749                 if (wakeup->tcp_connlost &&
17750                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17751                         goto free_msg;
17752
17753                 if (wakeup->tcp_nomoretokens &&
17754                     nla_put_flag(msg,
17755                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17756                         goto free_msg;
17757
17758                 if (wakeup->packet) {
17759                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17760                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17761
17762                         if (!wakeup->packet_80211) {
17763                                 pkt_attr =
17764                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17765                                 len_attr =
17766                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17767                         }
17768
17769                         if (wakeup->packet_len &&
17770                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17771                                 goto free_msg;
17772
17773                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17774                                     wakeup->packet))
17775                                 goto free_msg;
17776                 }
17777
17778                 if (wakeup->net_detect &&
17779                     cfg80211_net_detect_results(msg, wakeup))
17780                                 goto free_msg;
17781
17782                 nla_nest_end(msg, reasons);
17783         }
17784
17785         genlmsg_end(msg, hdr);
17786
17787         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17788                                 NL80211_MCGRP_MLME, gfp);
17789         return;
17790
17791  free_msg:
17792         nlmsg_free(msg);
17793 }
17794 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17795 #endif
17796
17797 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17798                                 enum nl80211_tdls_operation oper,
17799                                 u16 reason_code, gfp_t gfp)
17800 {
17801         struct wireless_dev *wdev = dev->ieee80211_ptr;
17802         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17803         struct sk_buff *msg;
17804         void *hdr;
17805
17806         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17807                                          reason_code);
17808
17809         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17810         if (!msg)
17811                 return;
17812
17813         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17814         if (!hdr) {
17815                 nlmsg_free(msg);
17816                 return;
17817         }
17818
17819         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17820             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17821             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17822             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17823             (reason_code > 0 &&
17824              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17825                 goto nla_put_failure;
17826
17827         genlmsg_end(msg, hdr);
17828
17829         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17830                                 NL80211_MCGRP_MLME, gfp);
17831         return;
17832
17833  nla_put_failure:
17834         nlmsg_free(msg);
17835 }
17836 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17837
17838 static int nl80211_netlink_notify(struct notifier_block * nb,
17839                                   unsigned long state,
17840                                   void *_notify)
17841 {
17842         struct netlink_notify *notify = _notify;
17843         struct cfg80211_registered_device *rdev;
17844         struct wireless_dev *wdev;
17845         struct cfg80211_beacon_registration *reg, *tmp;
17846
17847         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17848                 return NOTIFY_DONE;
17849
17850         rcu_read_lock();
17851
17852         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17853                 struct cfg80211_sched_scan_request *sched_scan_req;
17854
17855                 list_for_each_entry_rcu(sched_scan_req,
17856                                         &rdev->sched_scan_req_list,
17857                                         list) {
17858                         if (sched_scan_req->owner_nlportid == notify->portid) {
17859                                 sched_scan_req->nl_owner_dead = true;
17860                                 schedule_work(&rdev->sched_scan_stop_wk);
17861                         }
17862                 }
17863
17864                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17865                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17866
17867                         if (wdev->owner_nlportid == notify->portid) {
17868                                 wdev->nl_owner_dead = true;
17869                                 schedule_work(&rdev->destroy_work);
17870                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17871                                 schedule_work(&wdev->disconnect_wk);
17872                         }
17873
17874                         cfg80211_release_pmsr(wdev, notify->portid);
17875                 }
17876
17877                 spin_lock_bh(&rdev->beacon_registrations_lock);
17878                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17879                                          list) {
17880                         if (reg->nlportid == notify->portid) {
17881                                 list_del(&reg->list);
17882                                 kfree(reg);
17883                                 break;
17884                         }
17885                 }
17886                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17887         }
17888
17889         rcu_read_unlock();
17890
17891         /*
17892          * It is possible that the user space process that is controlling the
17893          * indoor setting disappeared, so notify the regulatory core.
17894          */
17895         regulatory_netlink_notify(notify->portid);
17896         return NOTIFY_OK;
17897 }
17898
17899 static struct notifier_block nl80211_netlink_notifier = {
17900         .notifier_call = nl80211_netlink_notify,
17901 };
17902
17903 void cfg80211_ft_event(struct net_device *netdev,
17904                        struct cfg80211_ft_event_params *ft_event)
17905 {
17906         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17907         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17908         struct sk_buff *msg;
17909         void *hdr;
17910
17911         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17912
17913         if (!ft_event->target_ap)
17914                 return;
17915
17916         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17917                         GFP_KERNEL);
17918         if (!msg)
17919                 return;
17920
17921         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17922         if (!hdr)
17923                 goto out;
17924
17925         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17926             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17927             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17928                 goto out;
17929
17930         if (ft_event->ies &&
17931             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17932                 goto out;
17933         if (ft_event->ric_ies &&
17934             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17935                     ft_event->ric_ies))
17936                 goto out;
17937
17938         genlmsg_end(msg, hdr);
17939
17940         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17941                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17942         return;
17943  out:
17944         nlmsg_free(msg);
17945 }
17946 EXPORT_SYMBOL(cfg80211_ft_event);
17947
17948 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17949 {
17950         struct cfg80211_registered_device *rdev;
17951         struct sk_buff *msg;
17952         void *hdr;
17953         u32 nlportid;
17954
17955         rdev = wiphy_to_rdev(wdev->wiphy);
17956         if (!rdev->crit_proto_nlportid)
17957                 return;
17958
17959         nlportid = rdev->crit_proto_nlportid;
17960         rdev->crit_proto_nlportid = 0;
17961
17962         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17963         if (!msg)
17964                 return;
17965
17966         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17967         if (!hdr)
17968                 goto nla_put_failure;
17969
17970         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17971             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17972                               NL80211_ATTR_PAD))
17973                 goto nla_put_failure;
17974
17975         genlmsg_end(msg, hdr);
17976
17977         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17978         return;
17979
17980  nla_put_failure:
17981         nlmsg_free(msg);
17982 }
17983 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17984
17985 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17986 {
17987         struct wiphy *wiphy = wdev->wiphy;
17988         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17989         struct sk_buff *msg;
17990         void *hdr;
17991
17992         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17993         if (!msg)
17994                 return;
17995
17996         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17997         if (!hdr)
17998                 goto out;
17999
18000         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18001             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
18002             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
18003                               NL80211_ATTR_PAD))
18004                 goto out;
18005
18006         genlmsg_end(msg, hdr);
18007
18008         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
18009                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18010         return;
18011  out:
18012         nlmsg_free(msg);
18013 }
18014
18015 int cfg80211_external_auth_request(struct net_device *dev,
18016                                    struct cfg80211_external_auth_params *params,
18017                                    gfp_t gfp)
18018 {
18019         struct wireless_dev *wdev = dev->ieee80211_ptr;
18020         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18021         struct sk_buff *msg;
18022         void *hdr;
18023
18024         if (!wdev->conn_owner_nlportid)
18025                 return -EINVAL;
18026
18027         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18028         if (!msg)
18029                 return -ENOMEM;
18030
18031         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
18032         if (!hdr)
18033                 goto nla_put_failure;
18034
18035         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18036             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18037             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
18038             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
18039                         params->action) ||
18040             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
18041             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
18042                     params->ssid.ssid))
18043                 goto nla_put_failure;
18044
18045         genlmsg_end(msg, hdr);
18046         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
18047                         wdev->conn_owner_nlportid);
18048         return 0;
18049
18050  nla_put_failure:
18051         nlmsg_free(msg);
18052         return -ENOBUFS;
18053 }
18054 EXPORT_SYMBOL(cfg80211_external_auth_request);
18055
18056 void cfg80211_update_owe_info_event(struct net_device *netdev,
18057                                     struct cfg80211_update_owe_info *owe_info,
18058                                     gfp_t gfp)
18059 {
18060         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
18061         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18062         struct sk_buff *msg;
18063         void *hdr;
18064
18065         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
18066
18067         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18068         if (!msg)
18069                 return;
18070
18071         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
18072         if (!hdr)
18073                 goto nla_put_failure;
18074
18075         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18076             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18077             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
18078                 goto nla_put_failure;
18079
18080         if (!owe_info->ie_len ||
18081             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
18082                 goto nla_put_failure;
18083
18084         genlmsg_end(msg, hdr);
18085
18086         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18087                                 NL80211_MCGRP_MLME, gfp);
18088         return;
18089
18090 nla_put_failure:
18091         genlmsg_cancel(msg, hdr);
18092         nlmsg_free(msg);
18093 }
18094 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
18095
18096 /* initialisation/exit functions */
18097
18098 int __init nl80211_init(void)
18099 {
18100         int err;
18101
18102         err = genl_register_family(&nl80211_fam);
18103         if (err)
18104                 return err;
18105
18106         err = netlink_register_notifier(&nl80211_netlink_notifier);
18107         if (err)
18108                 goto err_out;
18109
18110         return 0;
18111  err_out:
18112         genl_unregister_family(&nl80211_fam);
18113         return err;
18114 }
18115
18116 void nl80211_exit(void)
18117 {
18118         netlink_unregister_notifier(&nl80211_netlink_notifier);
18119         genl_unregister_family(&nl80211_fam);
18120 }