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 };
 317
 318 static const struct nla_policy
 319 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 320         [NL80211_PMSR_TYPE_FTM] =
 321                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 322 };
 323
 324 static const struct nla_policy
 325 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 326         [NL80211_PMSR_REQ_ATTR_DATA] =
 327                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 328         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 329 };
 330
 331 static const struct nla_policy
 332 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 333         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 334         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 335         [NL80211_PMSR_PEER_ATTR_REQ] =
 336                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 337         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 338 };
 339
 340 static const struct nla_policy
 341 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 342         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 343         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 344         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 345         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 346         [NL80211_PMSR_ATTR_PEERS] =
 347                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 348 };
 349
 350 static const struct nla_policy
 351 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 352         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 353                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 354         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 355                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 356         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 357                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 358         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 359                 NLA_POLICY_EXACT_LEN(8),
 360         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 361                 NLA_POLICY_EXACT_LEN(8),
 362         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 363 };
 364
 365 static const struct nla_policy
 366 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 367         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 368         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 369         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 370 };
 371
 372 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 373         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 374                                     .len = NL80211_MAX_SUPP_RATES },
 375         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 376                                 .len = NL80211_MAX_SUPP_HT_RATES },
 377         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 378         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 379         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 380         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 381                                                    NL80211_RATE_INFO_HE_GI_0_8,
 382                                                    NL80211_RATE_INFO_HE_GI_3_2),
 383         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 384                                                    NL80211_RATE_INFO_HE_1XLTF,
 385                                                    NL80211_RATE_INFO_HE_4XLTF),
 386 };
 387
 388 static const struct nla_policy
 389 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 390         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 391         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 392         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 393         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 394         [NL80211_TID_CONFIG_ATTR_NOACK] =
 395                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 396         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 397         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 398         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 399                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 400         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 401                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 402         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 403                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 404         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 405                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 406         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 407                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 408 };
 409
 410 static const struct nla_policy
 411 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 412         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 413         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 414         NLA_POLICY_RANGE(NLA_BINARY,
 415                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 416                          IEEE80211_MAX_DATA_LEN),
 417 };
 418
 419 static const struct nla_policy
 420 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 421         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 422         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 423                                                        .len = IEEE80211_MAX_DATA_LEN }
 424 };
 425
 426 static const struct nla_policy
 427 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 428         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 429         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 430 };
 431
 432 static const struct nla_policy
 433 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 434         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 435         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 436 };
 437
 438 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 439         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 440         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 441         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 442                                       .len = 20-1 },
 443         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 444
 445         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 446         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 447         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 448                                                 NL80211_EDMG_CHANNELS_MIN,
 449                                                 NL80211_EDMG_CHANNELS_MAX),
 450         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 451                                                 NL80211_EDMG_BW_CONFIG_MIN,
 452                                                 NL80211_EDMG_BW_CONFIG_MAX),
 453
 454         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 455         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 456         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 457         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 458
 459         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 460         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 461         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 462         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 463         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 464         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 465
 466         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 467         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 468         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 469
 470         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 471         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 472
 473         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 474         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 475                                     .len = WLAN_MAX_KEY_LEN },
 476         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 477         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 478         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 479         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 480         [NL80211_ATTR_KEY_TYPE] =
 481                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 482
 483         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 484         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 485         [NL80211_ATTR_BEACON_HEAD] =
 486                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 487                                        IEEE80211_MAX_DATA_LEN),
 488         [NL80211_ATTR_BEACON_TAIL] =
 489                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 490                                        IEEE80211_MAX_DATA_LEN),
 491         [NL80211_ATTR_STA_AID] =
 492                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 493         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 494         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 495         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 496                                                .len = NL80211_MAX_SUPP_RATES },
 497         [NL80211_ATTR_STA_PLINK_ACTION] =
 498                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 499         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 500                 NLA_POLICY_RANGE(NLA_U8,
 501                                  NL80211_TX_POWER_AUTOMATIC,
 502                                  NL80211_TX_POWER_FIXED),
 503         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 504         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 505         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 506         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 507                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 508         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 509
 510         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 511         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 512
 513         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 514         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 515         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 516         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 517                                            .len = NL80211_MAX_SUPP_RATES },
 518         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 519
 520         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 521         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 522
 523         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 524
 525         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 526         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 527                                                    validate_ie_attr,
 528                                                    IEEE80211_MAX_DATA_LEN),
 529         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 530         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 531
 532         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 533                                 .len = IEEE80211_MAX_SSID_LEN },
 534         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 535         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 536         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 537         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 538         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 539                                                   NL80211_MFP_NO,
 540                                                   NL80211_MFP_OPTIONAL),
 541         [NL80211_ATTR_STA_FLAGS2] = {
 542                 .len = sizeof(struct nl80211_sta_flag_update),
 543         },
 544         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 545         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 546         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 547         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 548         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 549         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 550         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 551         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 552         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 553         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 554         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 555         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 556         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 557         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 558         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 559                                  .len = IEEE80211_MAX_DATA_LEN },
 560         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 561         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 562                                                    NL80211_PS_DISABLED,
 563                                                    NL80211_PS_ENABLED),
 564         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 565         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 566         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 567         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 568         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 569         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 570         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 571         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 572         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 573         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 574         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 575         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 576         [NL80211_ATTR_STA_PLINK_STATE] =
 577                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 578         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 579         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 580         [NL80211_ATTR_MESH_PEER_AID] =
 581                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 582         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 583         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 584         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 585         [NL80211_ATTR_HIDDEN_SSID] =
 586                 NLA_POLICY_RANGE(NLA_U32,
 587                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 588                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 589         [NL80211_ATTR_IE_PROBE_RESP] =
 590                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 591                                        IEEE80211_MAX_DATA_LEN),
 592         [NL80211_ATTR_IE_ASSOC_RESP] =
 593                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 594                                        IEEE80211_MAX_DATA_LEN),
 595         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 596         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 597         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 598         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 599         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 600         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 601         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 602         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 603         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 604         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 605         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 606                                       .len = IEEE80211_MAX_DATA_LEN },
 607         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 608         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 609         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 610                 .len = NL80211_HT_CAPABILITY_LEN
 611         },
 612         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 613         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 614         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 615         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 616         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 617
 618         /* need to include at least Auth Transaction and Status Code */
 619         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 620
 621         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 622         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 623         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 624         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 625         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 626                 NLA_POLICY_RANGE(NLA_U32,
 627                                  NL80211_MESH_POWER_UNKNOWN + 1,
 628                                  NL80211_MESH_POWER_MAX),
 629         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 630         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 631         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 632         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 633         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 634         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 635         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 636                 .len = NL80211_VHT_CAPABILITY_LEN,
 637         },
 638         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 639         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 640                                   .len = IEEE80211_MAX_DATA_LEN },
 641         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 642         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 643                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 644         [NL80211_ATTR_PEER_AID] =
 645                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 646         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 647         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 648         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 649         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 650         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 651         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 652         /*
 653          * The value of the Length field of the Supported Operating
 654          * Classes element is between 2 and 253.
 655          */
 656         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 657                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 658         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 659         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 660         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 661         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 662         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 663         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 664                                                   IEEE80211_QOS_MAP_LEN_MIN,
 665                                                   IEEE80211_QOS_MAP_LEN_MAX),
 666         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 667         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 668         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 669         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 670         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 671         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 672         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 673         [NL80211_ATTR_USER_PRIO] =
 674                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 675         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 676         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 677         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 678         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 679         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 680         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 681         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 682         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 683         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 684         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 685         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 686                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 687         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 688                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 689         },
 690         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 691         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 692         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 693         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 694         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 695                                     .len = FILS_MAX_KEK_LEN },
 696         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 697         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 698         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 699         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 700         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 701                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 702         },
 703         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 704         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 705                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 706         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 707                                           .len = FILS_ERP_MAX_REALM_LEN },
 708         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 709         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 710                                         .len = FILS_ERP_MAX_RRK_LEN },
 711         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 712         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 713         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 714         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 715         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 716
 717         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 718         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 719         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 720         [NL80211_ATTR_HE_CAPABILITY] =
 721                 NLA_POLICY_RANGE(NLA_BINARY,
 722                                  NL80211_HE_MIN_CAPABILITY_LEN,
 723                                  NL80211_HE_MAX_CAPABILITY_LEN),
 724         [NL80211_ATTR_FTM_RESPONDER] =
 725                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 726         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 727         [NL80211_ATTR_PEER_MEASUREMENTS] =
 728                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 729         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 730         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 731                                         .len = SAE_PASSWORD_MAX_LEN },
 732         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 733         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 734         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 735         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 736         [NL80211_ATTR_TID_CONFIG] =
 737                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 738         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 739         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 740         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 741         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 742         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 743         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 744         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 745                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 746         [NL80211_ATTR_FILS_DISCOVERY] =
 747                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 748         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 749                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 750         [NL80211_ATTR_S1G_CAPABILITY] =
 751                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 752         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 753                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 754         [NL80211_ATTR_SAE_PWE] =
 755                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 756                                  NL80211_SAE_PWE_BOTH),
 757         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 758         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 759         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 760 };
 761
 762 /* policy for the key attributes */
 763 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 764         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 765         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 766         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 767         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 768         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 769         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 770         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 771         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 772         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 773 };
 774
 775 /* policy for the key default flags */
 776 static const struct nla_policy
 777 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 778         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 779         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 780 };
 781
 782 #ifdef CONFIG_PM
 783 /* policy for WoWLAN attributes */
 784 static const struct nla_policy
 785 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 786         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 787         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 788         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 789         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 790         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 791         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 792         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 793         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 794         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 795         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 796 };
 797
 798 static const struct nla_policy
 799 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 800         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 801         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 802         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 803         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 804         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 805         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 806         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 807                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 808         },
 809         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 810                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 811         },
 812         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 813         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 814         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 815 };
 816 #endif /* CONFIG_PM */
 817
 818 /* policy for coalesce rule attributes */
 819 static const struct nla_policy
 820 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 821         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 822         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 823                 NLA_POLICY_RANGE(NLA_U32,
 824                                  NL80211_COALESCE_CONDITION_MATCH,
 825                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 826         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 827 };
 828
 829 /* policy for GTK rekey offload attributes */
 830 static const struct nla_policy
 831 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 832         [NL80211_REKEY_DATA_KEK] = {
 833                 .type = NLA_BINARY,
 834                 .len = NL80211_KEK_EXT_LEN
 835         },
 836         [NL80211_REKEY_DATA_KCK] = {
 837                 .type = NLA_BINARY,
 838                 .len = NL80211_KCK_EXT_LEN
 839         },
 840         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 841         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 842 };
 843
 844 static const struct nla_policy
 845 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 846         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 847         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 848         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 849         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 850 };
 851
 852 static const struct nla_policy
 853 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 854         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 855                                                  .len = IEEE80211_MAX_SSID_LEN },
 856         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 857         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 858         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 859                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 860 };
 861
 862 static const struct nla_policy
 863 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 864         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 865         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 866 };
 867
 868 static const struct nla_policy
 869 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 870         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 871         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 872         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 873                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 874         },
 875 };
 876
 877 /* policy for NAN function attributes */
 878 static const struct nla_policy
 879 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 880         [NL80211_NAN_FUNC_TYPE] =
 881                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 882         [NL80211_NAN_FUNC_SERVICE_ID] = {
 883                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 884         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 885         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 886         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 887         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 888         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 889         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 890         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 891         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 892         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 893                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 894         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 895         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 896         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 897         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 898         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 899 };
 900
 901 /* policy for Service Response Filter attributes */
 902 static const struct nla_policy
 903 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 904         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 905         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 906                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 907         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 908         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 909 };
 910
 911 /* policy for packet pattern attributes */
 912 static const struct nla_policy
 913 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 914         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 915         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 916         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 917 };
 918
 919 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 920                               struct cfg80211_registered_device **rdev,
 921                               struct wireless_dev **wdev)
 922 {
 923         int err;
 924
 925         if (!cb->args[0]) {
 926                 struct nlattr **attrbuf;
 927
 928                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 929                                   GFP_KERNEL);
 930                 if (!attrbuf)
 931                         return -ENOMEM;
 932
 933                 err = nlmsg_parse_deprecated(cb->nlh,
 934                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 935                                              attrbuf, nl80211_fam.maxattr,
 936                                              nl80211_policy, NULL);
 937                 if (err) {
 938                         kfree(attrbuf);
 939                         return err;
 940                 }
 941
 942                 rtnl_lock();
 943                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
 944                                                    attrbuf);
 945                 kfree(attrbuf);
 946                 if (IS_ERR(*wdev)) {
 947                         rtnl_unlock();
 948                         return PTR_ERR(*wdev);
 949                 }
 950                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 951                 mutex_lock(&(*rdev)->wiphy.mtx);
 952                 rtnl_unlock();
 953                 /* 0 is the first index - add 1 to parse only once */
 954                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 955                 cb->args[1] = (*wdev)->identifier;
 956         } else {
 957                 /* subtract the 1 again here */
 958                 struct wiphy *wiphy;
 959                 struct wireless_dev *tmp;
 960
 961                 rtnl_lock();
 962                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 963                 if (!wiphy) {
 964                         rtnl_unlock();
 965                         return -ENODEV;
 966                 }
 967                 *rdev = wiphy_to_rdev(wiphy);
 968                 *wdev = NULL;
 969
 970                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 971                         if (tmp->identifier == cb->args[1]) {
 972                                 *wdev = tmp;
 973                                 break;
 974                         }
 975                 }
 976
 977                 if (!*wdev) {
 978                         rtnl_unlock();
 979                         return -ENODEV;
 980                 }
 981                 mutex_lock(&(*rdev)->wiphy.mtx);
 982                 rtnl_unlock();
 983         }
 984
 985         return 0;
 986 }
 987
 988 /* message building helper */
 989 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 990                      int flags, u8 cmd)
 991 {
 992         /* since there is no private header just add the generic one */
 993         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 994 }
 995
 996 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 997                                      const struct ieee80211_reg_rule *rule)
 998 {
 999         int j;
1000         struct nlattr *nl_wmm_rules =
1001                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
1002
1003         if (!nl_wmm_rules)
1004                 goto nla_put_failure;
1005
1006         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1007                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1008
1009                 if (!nl_wmm_rule)
1010                         goto nla_put_failure;
1011
1012                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1013                                 rule->wmm_rule.client[j].cw_min) ||
1014                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1015                                 rule->wmm_rule.client[j].cw_max) ||
1016                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1017                                rule->wmm_rule.client[j].aifsn) ||
1018                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1019                                 rule->wmm_rule.client[j].cot))
1020                         goto nla_put_failure;
1021
1022                 nla_nest_end(msg, nl_wmm_rule);
1023         }
1024         nla_nest_end(msg, nl_wmm_rules);
1025
1026         return 0;
1027
1028 nla_put_failure:
1029         return -ENOBUFS;
1030 }
1031
1032 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1033                                    struct ieee80211_channel *chan,
1034                                    bool large)
1035 {
1036         /* Some channels must be completely excluded from the
1037          * list to protect old user-space tools from breaking
1038          */
1039         if (!large && chan->flags &
1040             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1041                 return 0;
1042         if (!large && chan->freq_offset)
1043                 return 0;
1044
1045         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1046                         chan->center_freq))
1047                 goto nla_put_failure;
1048
1049         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1050                 goto nla_put_failure;
1051
1052         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1053             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1054                 goto nla_put_failure;
1055         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1056                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1057                         goto nla_put_failure;
1058                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1059                         goto nla_put_failure;
1060         }
1061         if (chan->flags & IEEE80211_CHAN_RADAR) {
1062                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1063                         goto nla_put_failure;
1064                 if (large) {
1065                         u32 time;
1066
1067                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1068
1069                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1070                                         chan->dfs_state))
1071                                 goto nla_put_failure;
1072                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1073                                         time))
1074                                 goto nla_put_failure;
1075                         if (nla_put_u32(msg,
1076                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1077                                         chan->dfs_cac_ms))
1078                                 goto nla_put_failure;
1079                 }
1080         }
1081
1082         if (large) {
1083                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1084                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1085                         goto nla_put_failure;
1086                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1087                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1088                         goto nla_put_failure;
1089                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1090                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1091                         goto nla_put_failure;
1092                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1093                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1094                         goto nla_put_failure;
1095                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1096                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1097                         goto nla_put_failure;
1098                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1099                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1100                         goto nla_put_failure;
1101                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1102                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1103                         goto nla_put_failure;
1104                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1105                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1106                         goto nla_put_failure;
1107                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1108                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1109                         goto nla_put_failure;
1110                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1111                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1112                         goto nla_put_failure;
1113                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1114                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1115                         goto nla_put_failure;
1116                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1117                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1118                         goto nla_put_failure;
1119                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1120                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1121                         goto nla_put_failure;
1122                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1123                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1124                         goto nla_put_failure;
1125         }
1126
1127         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1128                         DBM_TO_MBM(chan->max_power)))
1129                 goto nla_put_failure;
1130
1131         if (large) {
1132                 const struct ieee80211_reg_rule *rule =
1133                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1134
1135                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1136                         if (nl80211_msg_put_wmm_rules(msg, rule))
1137                                 goto nla_put_failure;
1138                 }
1139         }
1140
1141         return 0;
1142
1143  nla_put_failure:
1144         return -ENOBUFS;
1145 }
1146
1147 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1148                                   struct cfg80211_txq_stats *txqstats,
1149                                   int attrtype)
1150 {
1151         struct nlattr *txqattr;
1152
1153 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1154         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1155             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1156                 return false;                                             \
1157         } while (0)
1158
1159         txqattr = nla_nest_start_noflag(msg, attrtype);
1160         if (!txqattr)
1161                 return false;
1162
1163         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1164         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1165         PUT_TXQVAL_U32(FLOWS, flows);
1166         PUT_TXQVAL_U32(DROPS, drops);
1167         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1168         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1169         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1170         PUT_TXQVAL_U32(COLLISIONS, collisions);
1171         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1172         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1173         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1174         nla_nest_end(msg, txqattr);
1175
1176 #undef PUT_TXQVAL_U32
1177         return true;
1178 }
1179
1180 /* netlink command implementations */
1181
1182 struct key_parse {
1183         struct key_params p;
1184         int idx;
1185         int type;
1186         bool def, defmgmt, defbeacon;
1187         bool def_uni, def_multi;
1188 };
1189
1190 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1191                                  struct key_parse *k)
1192 {
1193         struct nlattr *tb[NL80211_KEY_MAX + 1];
1194         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1195                                               nl80211_key_policy,
1196                                               info->extack);
1197         if (err)
1198                 return err;
1199
1200         k->def = !!tb[NL80211_KEY_DEFAULT];
1201         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1202         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1203
1204         if (k->def) {
1205                 k->def_uni = true;
1206                 k->def_multi = true;
1207         }
1208         if (k->defmgmt || k->defbeacon)
1209                 k->def_multi = true;
1210
1211         if (tb[NL80211_KEY_IDX])
1212                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1213
1214         if (tb[NL80211_KEY_DATA]) {
1215                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1216                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1217         }
1218
1219         if (tb[NL80211_KEY_SEQ]) {
1220                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1221                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1222         }
1223
1224         if (tb[NL80211_KEY_CIPHER])
1225                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1226
1227         if (tb[NL80211_KEY_TYPE])
1228                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1229
1230         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1231                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1232
1233                 err = nla_parse_nested_deprecated(kdt,
1234                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1235                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1236                                                   nl80211_key_default_policy,
1237                                                   info->extack);
1238                 if (err)
1239                         return err;
1240
1241                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1242                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1243         }
1244
1245         if (tb[NL80211_KEY_MODE])
1246                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1247
1248         return 0;
1249 }
1250
1251 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1252 {
1253         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1254                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1255                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1256         }
1257
1258         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1259                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1260                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1261         }
1262
1263         if (info->attrs[NL80211_ATTR_KEY_IDX])
1264                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1265
1266         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1267                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1268
1269         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1270         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1271
1272         if (k->def) {
1273                 k->def_uni = true;
1274                 k->def_multi = true;
1275         }
1276         if (k->defmgmt)
1277                 k->def_multi = true;
1278
1279         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1280                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1281
1282         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1283                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1284                 int err = nla_parse_nested_deprecated(kdt,
1285                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1286                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1287                                                       nl80211_key_default_policy,
1288                                                       info->extack);
1289                 if (err)
1290                         return err;
1291
1292                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1293                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1294         }
1295
1296         return 0;
1297 }
1298
1299 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1300 {
1301         int err;
1302
1303         memset(k, 0, sizeof(*k));
1304         k->idx = -1;
1305         k->type = -1;
1306
1307         if (info->attrs[NL80211_ATTR_KEY])
1308                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1309         else
1310                 err = nl80211_parse_key_old(info, k);
1311
1312         if (err)
1313                 return err;
1314
1315         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1316             (k->defbeacon ? 1 : 0) > 1) {
1317                 GENL_SET_ERR_MSG(info,
1318                                  "key with multiple default flags is invalid");
1319                 return -EINVAL;
1320         }
1321
1322         if (k->defmgmt || k->defbeacon) {
1323                 if (k->def_uni || !k->def_multi) {
1324                         GENL_SET_ERR_MSG(info,
1325                                          "defmgmt/defbeacon key must be mcast");
1326                         return -EINVAL;
1327                 }
1328         }
1329
1330         if (k->idx != -1) {
1331                 if (k->defmgmt) {
1332                         if (k->idx < 4 || k->idx > 5) {
1333                                 GENL_SET_ERR_MSG(info,
1334                                                  "defmgmt key idx not 4 or 5");
1335                                 return -EINVAL;
1336                         }
1337                 } else if (k->defbeacon) {
1338                         if (k->idx < 6 || k->idx > 7) {
1339                                 GENL_SET_ERR_MSG(info,
1340                                                  "defbeacon key idx not 6 or 7");
1341                                 return -EINVAL;
1342                         }
1343                 } else if (k->def) {
1344                         if (k->idx < 0 || k->idx > 3) {
1345                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1346                                 return -EINVAL;
1347                         }
1348                 } else {
1349                         if (k->idx < 0 || k->idx > 7) {
1350                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1351                                 return -EINVAL;
1352                         }
1353                 }
1354         }
1355
1356         return 0;
1357 }
1358
1359 static struct cfg80211_cached_keys *
1360 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1361                        struct genl_info *info, bool *no_ht)
1362 {
1363         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1364         struct key_parse parse;
1365         struct nlattr *key;
1366         struct cfg80211_cached_keys *result;
1367         int rem, err, def = 0;
1368         bool have_key = false;
1369
1370         nla_for_each_nested(key, keys, rem) {
1371                 have_key = true;
1372                 break;
1373         }
1374
1375         if (!have_key)
1376                 return NULL;
1377
1378         result = kzalloc(sizeof(*result), GFP_KERNEL);
1379         if (!result)
1380                 return ERR_PTR(-ENOMEM);
1381
1382         result->def = -1;
1383
1384         nla_for_each_nested(key, keys, rem) {
1385                 memset(&parse, 0, sizeof(parse));
1386                 parse.idx = -1;
1387
1388                 err = nl80211_parse_key_new(info, key, &parse);
1389                 if (err)
1390                         goto error;
1391                 err = -EINVAL;
1392                 if (!parse.p.key)
1393                         goto error;
1394                 if (parse.idx < 0 || parse.idx > 3) {
1395                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1396                         goto error;
1397                 }
1398                 if (parse.def) {
1399                         if (def) {
1400                                 GENL_SET_ERR_MSG(info,
1401                                                  "only one key can be default");
1402                                 goto error;
1403                         }
1404                         def = 1;
1405                         result->def = parse.idx;
1406                         if (!parse.def_uni || !parse.def_multi)
1407                                 goto error;
1408                 } else if (parse.defmgmt)
1409                         goto error;
1410                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1411                                                      parse.idx, false, NULL);
1412                 if (err)
1413                         goto error;
1414                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1415                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1416                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1417                         err = -EINVAL;
1418                         goto error;
1419                 }
1420                 result->params[parse.idx].cipher = parse.p.cipher;
1421                 result->params[parse.idx].key_len = parse.p.key_len;
1422                 result->params[parse.idx].key = result->data[parse.idx];
1423                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1424
1425                 /* must be WEP key if we got here */
1426                 if (no_ht)
1427                         *no_ht = true;
1428         }
1429
1430         if (result->def < 0) {
1431                 err = -EINVAL;
1432                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1433                 goto error;
1434         }
1435
1436         return result;
1437  error:
1438         kfree(result);
1439         return ERR_PTR(err);
1440 }
1441
1442 static int nl80211_key_allowed(struct wireless_dev *wdev)
1443 {
1444         ASSERT_WDEV_LOCK(wdev);
1445
1446         switch (wdev->iftype) {
1447         case NL80211_IFTYPE_AP:
1448         case NL80211_IFTYPE_AP_VLAN:
1449         case NL80211_IFTYPE_P2P_GO:
1450         case NL80211_IFTYPE_MESH_POINT:
1451                 break;
1452         case NL80211_IFTYPE_ADHOC:
1453         case NL80211_IFTYPE_STATION:
1454         case NL80211_IFTYPE_P2P_CLIENT:
1455                 if (!wdev->current_bss)
1456                         return -ENOLINK;
1457                 break;
1458         case NL80211_IFTYPE_UNSPECIFIED:
1459         case NL80211_IFTYPE_OCB:
1460         case NL80211_IFTYPE_MONITOR:
1461         case NL80211_IFTYPE_NAN:
1462         case NL80211_IFTYPE_P2P_DEVICE:
1463         case NL80211_IFTYPE_WDS:
1464         case NUM_NL80211_IFTYPES:
1465                 return -EINVAL;
1466         }
1467
1468         return 0;
1469 }
1470
1471 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1472                                                         u32 freq)
1473 {
1474         struct ieee80211_channel *chan;
1475
1476         chan = ieee80211_get_channel_khz(wiphy, freq);
1477         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1478                 return NULL;
1479         return chan;
1480 }
1481
1482 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1483 {
1484         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1485         int i;
1486
1487         if (!nl_modes)
1488                 goto nla_put_failure;
1489
1490         i = 0;
1491         while (ifmodes) {
1492                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1493                         goto nla_put_failure;
1494                 ifmodes >>= 1;
1495                 i++;
1496         }
1497
1498         nla_nest_end(msg, nl_modes);
1499         return 0;
1500
1501 nla_put_failure:
1502         return -ENOBUFS;
1503 }
1504
1505 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1506                                           struct sk_buff *msg,
1507                                           bool large)
1508 {
1509         struct nlattr *nl_combis;
1510         int i, j;
1511
1512         nl_combis = nla_nest_start_noflag(msg,
1513                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1514         if (!nl_combis)
1515                 goto nla_put_failure;
1516
1517         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1518                 const struct ieee80211_iface_combination *c;
1519                 struct nlattr *nl_combi, *nl_limits;
1520
1521                 c = &wiphy->iface_combinations[i];
1522
1523                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1524                 if (!nl_combi)
1525                         goto nla_put_failure;
1526
1527                 nl_limits = nla_nest_start_noflag(msg,
1528                                                   NL80211_IFACE_COMB_LIMITS);
1529                 if (!nl_limits)
1530                         goto nla_put_failure;
1531
1532                 for (j = 0; j < c->n_limits; j++) {
1533                         struct nlattr *nl_limit;
1534
1535                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1536                         if (!nl_limit)
1537                                 goto nla_put_failure;
1538                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1539                                         c->limits[j].max))
1540                                 goto nla_put_failure;
1541                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1542                                                 c->limits[j].types))
1543                                 goto nla_put_failure;
1544                         nla_nest_end(msg, nl_limit);
1545                 }
1546
1547                 nla_nest_end(msg, nl_limits);
1548
1549                 if (c->beacon_int_infra_match &&
1550                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1551                         goto nla_put_failure;
1552                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1553                                 c->num_different_channels) ||
1554                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1555                                 c->max_interfaces))
1556                         goto nla_put_failure;
1557                 if (large &&
1558                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1559                                 c->radar_detect_widths) ||
1560                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1561                                 c->radar_detect_regions)))
1562                         goto nla_put_failure;
1563                 if (c->beacon_int_min_gcd &&
1564                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1565                                 c->beacon_int_min_gcd))
1566                         goto nla_put_failure;
1567
1568                 nla_nest_end(msg, nl_combi);
1569         }
1570
1571         nla_nest_end(msg, nl_combis);
1572
1573         return 0;
1574 nla_put_failure:
1575         return -ENOBUFS;
1576 }
1577
1578 #ifdef CONFIG_PM
1579 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1580                                         struct sk_buff *msg)
1581 {
1582         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1583         struct nlattr *nl_tcp;
1584
1585         if (!tcp)
1586                 return 0;
1587
1588         nl_tcp = nla_nest_start_noflag(msg,
1589                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1590         if (!nl_tcp)
1591                 return -ENOBUFS;
1592
1593         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1594                         tcp->data_payload_max))
1595                 return -ENOBUFS;
1596
1597         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1598                         tcp->data_payload_max))
1599                 return -ENOBUFS;
1600
1601         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1602                 return -ENOBUFS;
1603
1604         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1605                                 sizeof(*tcp->tok), tcp->tok))
1606                 return -ENOBUFS;
1607
1608         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1609                         tcp->data_interval_max))
1610                 return -ENOBUFS;
1611
1612         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1613                         tcp->wake_payload_max))
1614                 return -ENOBUFS;
1615
1616         nla_nest_end(msg, nl_tcp);
1617         return 0;
1618 }
1619
1620 static int nl80211_send_wowlan(struct sk_buff *msg,
1621                                struct cfg80211_registered_device *rdev,
1622                                bool large)
1623 {
1624         struct nlattr *nl_wowlan;
1625
1626         if (!rdev->wiphy.wowlan)
1627                 return 0;
1628
1629         nl_wowlan = nla_nest_start_noflag(msg,
1630                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1631         if (!nl_wowlan)
1632                 return -ENOBUFS;
1633
1634         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1635              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1636             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1637              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1638             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1639              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1640             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1641              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1642             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1643              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1644             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1645              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1646             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1647              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1648             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1649              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1650                 return -ENOBUFS;
1651
1652         if (rdev->wiphy.wowlan->n_patterns) {
1653                 struct nl80211_pattern_support pat = {
1654                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1655                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1656                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1657                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1658                 };
1659
1660                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1661                             sizeof(pat), &pat))
1662                         return -ENOBUFS;
1663         }
1664
1665         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1666             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1667                         rdev->wiphy.wowlan->max_nd_match_sets))
1668                 return -ENOBUFS;
1669
1670         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1671                 return -ENOBUFS;
1672
1673         nla_nest_end(msg, nl_wowlan);
1674
1675         return 0;
1676 }
1677 #endif
1678
1679 static int nl80211_send_coalesce(struct sk_buff *msg,
1680                                  struct cfg80211_registered_device *rdev)
1681 {
1682         struct nl80211_coalesce_rule_support rule;
1683
1684         if (!rdev->wiphy.coalesce)
1685                 return 0;
1686
1687         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1688         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1689         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1690         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1691         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1692         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1693
1694         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1695                 return -ENOBUFS;
1696
1697         return 0;
1698 }
1699
1700 static int
1701 nl80211_send_iftype_data(struct sk_buff *msg,
1702                          const struct ieee80211_supported_band *sband,
1703                          const struct ieee80211_sband_iftype_data *iftdata)
1704 {
1705         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1706
1707         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1708                                 iftdata->types_mask))
1709                 return -ENOBUFS;
1710
1711         if (he_cap->has_he) {
1712                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1713                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1714                             he_cap->he_cap_elem.mac_cap_info) ||
1715                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1716                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1717                             he_cap->he_cap_elem.phy_cap_info) ||
1718                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1719                             sizeof(he_cap->he_mcs_nss_supp),
1720                             &he_cap->he_mcs_nss_supp) ||
1721                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1722                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1723                         return -ENOBUFS;
1724         }
1725
1726         if (sband->band == NL80211_BAND_6GHZ &&
1727             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1728                     sizeof(iftdata->he_6ghz_capa),
1729                     &iftdata->he_6ghz_capa))
1730                 return -ENOBUFS;
1731
1732         return 0;
1733 }
1734
1735 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1736                                       struct ieee80211_supported_band *sband,
1737                                       bool large)
1738 {
1739         struct nlattr *nl_rates, *nl_rate;
1740         struct ieee80211_rate *rate;
1741         int i;
1742
1743         /* add HT info */
1744         if (sband->ht_cap.ht_supported &&
1745             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1746                      sizeof(sband->ht_cap.mcs),
1747                      &sband->ht_cap.mcs) ||
1748              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1749                          sband->ht_cap.cap) ||
1750              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1751                         sband->ht_cap.ampdu_factor) ||
1752              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1753                         sband->ht_cap.ampdu_density)))
1754                 return -ENOBUFS;
1755
1756         /* add VHT info */
1757         if (sband->vht_cap.vht_supported &&
1758             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1759                      sizeof(sband->vht_cap.vht_mcs),
1760                      &sband->vht_cap.vht_mcs) ||
1761              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1762                          sband->vht_cap.cap)))
1763                 return -ENOBUFS;
1764
1765         if (large && sband->n_iftype_data) {
1766                 struct nlattr *nl_iftype_data =
1767                         nla_nest_start_noflag(msg,
1768                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1769                 int err;
1770
1771                 if (!nl_iftype_data)
1772                         return -ENOBUFS;
1773
1774                 for (i = 0; i < sband->n_iftype_data; i++) {
1775                         struct nlattr *iftdata;
1776
1777                         iftdata = nla_nest_start_noflag(msg, i + 1);
1778                         if (!iftdata)
1779                                 return -ENOBUFS;
1780
1781                         err = nl80211_send_iftype_data(msg, sband,
1782                                                        &sband->iftype_data[i]);
1783                         if (err)
1784                                 return err;
1785
1786                         nla_nest_end(msg, iftdata);
1787                 }
1788
1789                 nla_nest_end(msg, nl_iftype_data);
1790         }
1791
1792         /* add EDMG info */
1793         if (large && sband->edmg_cap.channels &&
1794             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1795                        sband->edmg_cap.channels) ||
1796             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1797                        sband->edmg_cap.bw_config)))
1798
1799                 return -ENOBUFS;
1800
1801         /* add bitrates */
1802         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1803         if (!nl_rates)
1804                 return -ENOBUFS;
1805
1806         for (i = 0; i < sband->n_bitrates; i++) {
1807                 nl_rate = nla_nest_start_noflag(msg, i);
1808                 if (!nl_rate)
1809                         return -ENOBUFS;
1810
1811                 rate = &sband->bitrates[i];
1812                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1813                                 rate->bitrate))
1814                         return -ENOBUFS;
1815                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1816                     nla_put_flag(msg,
1817                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1818                         return -ENOBUFS;
1819
1820                 nla_nest_end(msg, nl_rate);
1821         }
1822
1823         nla_nest_end(msg, nl_rates);
1824
1825         return 0;
1826 }
1827
1828 static int
1829 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1830                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1831 {
1832         u16 stypes;
1833         struct nlattr *nl_ftypes, *nl_ifs;
1834         enum nl80211_iftype ift;
1835         int i;
1836
1837         if (!mgmt_stypes)
1838                 return 0;
1839
1840         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1841         if (!nl_ifs)
1842                 return -ENOBUFS;
1843
1844         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1845                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1846                 if (!nl_ftypes)
1847                         return -ENOBUFS;
1848                 i = 0;
1849                 stypes = mgmt_stypes[ift].tx;
1850                 while (stypes) {
1851                         if ((stypes & 1) &&
1852                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1853                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1854                                 return -ENOBUFS;
1855                         stypes >>= 1;
1856                         i++;
1857                 }
1858                 nla_nest_end(msg, nl_ftypes);
1859         }
1860
1861         nla_nest_end(msg, nl_ifs);
1862
1863         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1864         if (!nl_ifs)
1865                 return -ENOBUFS;
1866
1867         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1868                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1869                 if (!nl_ftypes)
1870                         return -ENOBUFS;
1871                 i = 0;
1872                 stypes = mgmt_stypes[ift].rx;
1873                 while (stypes) {
1874                         if ((stypes & 1) &&
1875                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1876                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1877                                 return -ENOBUFS;
1878                         stypes >>= 1;
1879                         i++;
1880                 }
1881                 nla_nest_end(msg, nl_ftypes);
1882         }
1883         nla_nest_end(msg, nl_ifs);
1884
1885         return 0;
1886 }
1887
1888 #define CMD(op, n)                                                      \
1889          do {                                                           \
1890                 if (rdev->ops->op) {                                    \
1891                         i++;                                            \
1892                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1893                                 goto nla_put_failure;                   \
1894                 }                                                       \
1895         } while (0)
1896
1897 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1898                                         struct sk_buff *msg)
1899 {
1900         int i = 0;
1901
1902         /*
1903          * do *NOT* add anything into this function, new things need to be
1904          * advertised only to new versions of userspace that can deal with
1905          * the split (and they can't possibly care about new features...
1906          */
1907         CMD(add_virtual_intf, NEW_INTERFACE);
1908         CMD(change_virtual_intf, SET_INTERFACE);
1909         CMD(add_key, NEW_KEY);
1910         CMD(start_ap, START_AP);
1911         CMD(add_station, NEW_STATION);
1912         CMD(add_mpath, NEW_MPATH);
1913         CMD(update_mesh_config, SET_MESH_CONFIG);
1914         CMD(change_bss, SET_BSS);
1915         CMD(auth, AUTHENTICATE);
1916         CMD(assoc, ASSOCIATE);
1917         CMD(deauth, DEAUTHENTICATE);
1918         CMD(disassoc, DISASSOCIATE);
1919         CMD(join_ibss, JOIN_IBSS);
1920         CMD(join_mesh, JOIN_MESH);
1921         CMD(set_pmksa, SET_PMKSA);
1922         CMD(del_pmksa, DEL_PMKSA);
1923         CMD(flush_pmksa, FLUSH_PMKSA);
1924         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1925                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1926         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1927         CMD(mgmt_tx, FRAME);
1928         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1929         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1930                 i++;
1931                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1932                         goto nla_put_failure;
1933         }
1934         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1935             rdev->ops->join_mesh) {
1936                 i++;
1937                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1938                         goto nla_put_failure;
1939         }
1940         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1941                 CMD(tdls_mgmt, TDLS_MGMT);
1942                 CMD(tdls_oper, TDLS_OPER);
1943         }
1944         if (rdev->wiphy.max_sched_scan_reqs)
1945                 CMD(sched_scan_start, START_SCHED_SCAN);
1946         CMD(probe_client, PROBE_CLIENT);
1947         CMD(set_noack_map, SET_NOACK_MAP);
1948         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1949                 i++;
1950                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1951                         goto nla_put_failure;
1952         }
1953         CMD(start_p2p_device, START_P2P_DEVICE);
1954         CMD(set_mcast_rate, SET_MCAST_RATE);
1955 #ifdef CONFIG_NL80211_TESTMODE
1956         CMD(testmode_cmd, TESTMODE);
1957 #endif
1958
1959         if (rdev->ops->connect || rdev->ops->auth) {
1960                 i++;
1961                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1962                         goto nla_put_failure;
1963         }
1964
1965         if (rdev->ops->disconnect || rdev->ops->deauth) {
1966                 i++;
1967                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1968                         goto nla_put_failure;
1969         }
1970
1971         return i;
1972  nla_put_failure:
1973         return -ENOBUFS;
1974 }
1975
1976 static int
1977 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1978                            struct sk_buff *msg)
1979 {
1980         struct nlattr *ftm;
1981
1982         if (!cap->ftm.supported)
1983                 return 0;
1984
1985         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1986         if (!ftm)
1987                 return -ENOBUFS;
1988
1989         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1990                 return -ENOBUFS;
1991         if (cap->ftm.non_asap &&
1992             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1993                 return -ENOBUFS;
1994         if (cap->ftm.request_lci &&
1995             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1996                 return -ENOBUFS;
1997         if (cap->ftm.request_civicloc &&
1998             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1999                 return -ENOBUFS;
2000         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
2001                         cap->ftm.preambles))
2002                 return -ENOBUFS;
2003         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2004                         cap->ftm.bandwidths))
2005                 return -ENOBUFS;
2006         if (cap->ftm.max_bursts_exponent >= 0 &&
2007             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2008                         cap->ftm.max_bursts_exponent))
2009                 return -ENOBUFS;
2010         if (cap->ftm.max_ftms_per_burst &&
2011             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2012                         cap->ftm.max_ftms_per_burst))
2013                 return -ENOBUFS;
2014         if (cap->ftm.trigger_based &&
2015             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2016                 return -ENOBUFS;
2017         if (cap->ftm.non_trigger_based &&
2018             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2019                 return -ENOBUFS;
2020
2021         nla_nest_end(msg, ftm);
2022         return 0;
2023 }
2024
2025 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2026                                   struct sk_buff *msg)
2027 {
2028         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2029         struct nlattr *pmsr, *caps;
2030
2031         if (!cap)
2032                 return 0;
2033
2034         /*
2035          * we don't need to clean up anything here since the caller
2036          * will genlmsg_cancel() if we fail
2037          */
2038
2039         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2040         if (!pmsr)
2041                 return -ENOBUFS;
2042
2043         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2044                 return -ENOBUFS;
2045
2046         if (cap->report_ap_tsf &&
2047             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2048                 return -ENOBUFS;
2049
2050         if (cap->randomize_mac_addr &&
2051             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2052                 return -ENOBUFS;
2053
2054         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2055         if (!caps)
2056                 return -ENOBUFS;
2057
2058         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2059                 return -ENOBUFS;
2060
2061         nla_nest_end(msg, caps);
2062         nla_nest_end(msg, pmsr);
2063
2064         return 0;
2065 }
2066
2067 static int
2068 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2069                               struct sk_buff *msg)
2070 {
2071         int i;
2072         struct nlattr *nested, *nested_akms;
2073         const struct wiphy_iftype_akm_suites *iftype_akms;
2074
2075         if (!rdev->wiphy.num_iftype_akm_suites ||
2076             !rdev->wiphy.iftype_akm_suites)
2077                 return 0;
2078
2079         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2080         if (!nested)
2081                 return -ENOBUFS;
2082
2083         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2084                 nested_akms = nla_nest_start(msg, i + 1);
2085                 if (!nested_akms)
2086                         return -ENOBUFS;
2087
2088                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2089
2090                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2091                                         iftype_akms->iftypes_mask))
2092                         return -ENOBUFS;
2093
2094                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2095                             sizeof(u32) * iftype_akms->n_akm_suites,
2096                             iftype_akms->akm_suites)) {
2097                         return -ENOBUFS;
2098                 }
2099                 nla_nest_end(msg, nested_akms);
2100         }
2101
2102         nla_nest_end(msg, nested);
2103
2104         return 0;
2105 }
2106
2107 static int
2108 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2109                                struct sk_buff *msg)
2110 {
2111         struct nlattr *supp;
2112
2113         if (!rdev->wiphy.tid_config_support.vif &&
2114             !rdev->wiphy.tid_config_support.peer)
2115                 return 0;
2116
2117         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2118         if (!supp)
2119                 return -ENOSPC;
2120
2121         if (rdev->wiphy.tid_config_support.vif &&
2122             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2123                               rdev->wiphy.tid_config_support.vif,
2124                               NL80211_TID_CONFIG_ATTR_PAD))
2125                 goto fail;
2126
2127         if (rdev->wiphy.tid_config_support.peer &&
2128             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2129                               rdev->wiphy.tid_config_support.peer,
2130                               NL80211_TID_CONFIG_ATTR_PAD))
2131                 goto fail;
2132
2133         /* for now we just use the same value ... makes more sense */
2134         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2135                        rdev->wiphy.tid_config_support.max_retry))
2136                 goto fail;
2137         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2138                        rdev->wiphy.tid_config_support.max_retry))
2139                 goto fail;
2140
2141         nla_nest_end(msg, supp);
2142
2143         return 0;
2144 fail:
2145         nla_nest_cancel(msg, supp);
2146         return -ENOBUFS;
2147 }
2148
2149 static int
2150 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2151                       struct sk_buff *msg)
2152 {
2153         struct nlattr *sar_capa, *specs, *sub_freq_range;
2154         u8 num_freq_ranges;
2155         int i;
2156
2157         if (!rdev->wiphy.sar_capa)
2158                 return 0;
2159
2160         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2161
2162         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2163         if (!sar_capa)
2164                 return -ENOSPC;
2165
2166         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2167                 goto fail;
2168
2169         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2170         if (!specs)
2171                 goto fail;
2172
2173         /* report supported freq_ranges */
2174         for (i = 0; i < num_freq_ranges; i++) {
2175                 sub_freq_range = nla_nest_start(msg, i + 1);
2176                 if (!sub_freq_range)
2177                         goto fail;
2178
2179                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2180                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2181                         goto fail;
2182
2183                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2184                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2185                         goto fail;
2186
2187                 nla_nest_end(msg, sub_freq_range);
2188         }
2189
2190         nla_nest_end(msg, specs);
2191         nla_nest_end(msg, sar_capa);
2192
2193         return 0;
2194 fail:
2195         nla_nest_cancel(msg, sar_capa);
2196         return -ENOBUFS;
2197 }
2198
2199 struct nl80211_dump_wiphy_state {
2200         s64 filter_wiphy;
2201         long start;
2202         long split_start, band_start, chan_start, capa_start;
2203         bool split;
2204 };
2205
2206 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2207                               enum nl80211_commands cmd,
2208                               struct sk_buff *msg, u32 portid, u32 seq,
2209                               int flags, struct nl80211_dump_wiphy_state *state)
2210 {
2211         void *hdr;
2212         struct nlattr *nl_bands, *nl_band;
2213         struct nlattr *nl_freqs, *nl_freq;
2214         struct nlattr *nl_cmds;
2215         enum nl80211_band band;
2216         struct ieee80211_channel *chan;
2217         int i;
2218         const struct ieee80211_txrx_stypes *mgmt_stypes =
2219                                 rdev->wiphy.mgmt_stypes;
2220         u32 features;
2221
2222         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2223         if (!hdr)
2224                 return -ENOBUFS;
2225
2226         if (WARN_ON(!state))
2227                 return -EINVAL;
2228
2229         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2230             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2231                            wiphy_name(&rdev->wiphy)) ||
2232             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2233                         cfg80211_rdev_list_generation))
2234                 goto nla_put_failure;
2235
2236         if (cmd != NL80211_CMD_NEW_WIPHY)
2237                 goto finish;
2238
2239         switch (state->split_start) {
2240         case 0:
2241                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2242                                rdev->wiphy.retry_short) ||
2243                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2244                                rdev->wiphy.retry_long) ||
2245                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2246                                 rdev->wiphy.frag_threshold) ||
2247                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2248                                 rdev->wiphy.rts_threshold) ||
2249                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2250                                rdev->wiphy.coverage_class) ||
2251                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2252                                rdev->wiphy.max_scan_ssids) ||
2253                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2254                                rdev->wiphy.max_sched_scan_ssids) ||
2255                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2256                                 rdev->wiphy.max_scan_ie_len) ||
2257                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2258                                 rdev->wiphy.max_sched_scan_ie_len) ||
2259                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2260                                rdev->wiphy.max_match_sets))
2261                         goto nla_put_failure;
2262
2263                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2264                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2265                         goto nla_put_failure;
2266                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2267                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2268                         goto nla_put_failure;
2269                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2270                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2271                         goto nla_put_failure;
2272                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2273                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2274                         goto nla_put_failure;
2275                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2276                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2277                         goto nla_put_failure;
2278                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2279                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2280                         goto nla_put_failure;
2281                 state->split_start++;
2282                 if (state->split)
2283                         break;
2284                 fallthrough;
2285         case 1:
2286                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2287                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2288                             rdev->wiphy.cipher_suites))
2289                         goto nla_put_failure;
2290
2291                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2292                                rdev->wiphy.max_num_pmkids))
2293                         goto nla_put_failure;
2294
2295                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2296                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2297                         goto nla_put_failure;
2298
2299                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2300                                 rdev->wiphy.available_antennas_tx) ||
2301                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2302                                 rdev->wiphy.available_antennas_rx))
2303                         goto nla_put_failure;
2304
2305                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2306                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2307                                 rdev->wiphy.probe_resp_offload))
2308                         goto nla_put_failure;
2309
2310                 if ((rdev->wiphy.available_antennas_tx ||
2311                      rdev->wiphy.available_antennas_rx) &&
2312                     rdev->ops->get_antenna) {
2313                         u32 tx_ant = 0, rx_ant = 0;
2314                         int res;
2315
2316                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2317                         if (!res) {
2318                                 if (nla_put_u32(msg,
2319                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2320                                                 tx_ant) ||
2321                                     nla_put_u32(msg,
2322                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2323                                                 rx_ant))
2324                                         goto nla_put_failure;
2325                         }
2326                 }
2327
2328                 state->split_start++;
2329                 if (state->split)
2330                         break;
2331                 fallthrough;
2332         case 2:
2333                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2334                                         rdev->wiphy.interface_modes))
2335                                 goto nla_put_failure;
2336                 state->split_start++;
2337                 if (state->split)
2338                         break;
2339                 fallthrough;
2340         case 3:
2341                 nl_bands = nla_nest_start_noflag(msg,
2342                                                  NL80211_ATTR_WIPHY_BANDS);
2343                 if (!nl_bands)
2344                         goto nla_put_failure;
2345
2346                 for (band = state->band_start;
2347                      band < NUM_NL80211_BANDS; band++) {
2348                         struct ieee80211_supported_band *sband;
2349
2350                         /* omit higher bands for ancient software */
2351                         if (band > NL80211_BAND_5GHZ && !state->split)
2352                                 break;
2353
2354                         sband = rdev->wiphy.bands[band];
2355
2356                         if (!sband)
2357                                 continue;
2358
2359                         nl_band = nla_nest_start_noflag(msg, band);
2360                         if (!nl_band)
2361                                 goto nla_put_failure;
2362
2363                         switch (state->chan_start) {
2364                         case 0:
2365                                 if (nl80211_send_band_rateinfo(msg, sband,
2366                                                                state->split))
2367                                         goto nla_put_failure;
2368                                 state->chan_start++;
2369                                 if (state->split)
2370                                         break;
2371                                 fallthrough;
2372                         default:
2373                                 /* add frequencies */
2374                                 nl_freqs = nla_nest_start_noflag(msg,
2375                                                                  NL80211_BAND_ATTR_FREQS);
2376                                 if (!nl_freqs)
2377                                         goto nla_put_failure;
2378
2379                                 for (i = state->chan_start - 1;
2380                                      i < sband->n_channels;
2381                                      i++) {
2382                                         nl_freq = nla_nest_start_noflag(msg,
2383                                                                         i);
2384                                         if (!nl_freq)
2385                                                 goto nla_put_failure;
2386
2387                                         chan = &sband->channels[i];
2388
2389                                         if (nl80211_msg_put_channel(
2390                                                         msg, &rdev->wiphy, chan,
2391                                                         state->split))
2392                                                 goto nla_put_failure;
2393
2394                                         nla_nest_end(msg, nl_freq);
2395                                         if (state->split)
2396                                                 break;
2397                                 }
2398                                 if (i < sband->n_channels)
2399                                         state->chan_start = i + 2;
2400                                 else
2401                                         state->chan_start = 0;
2402                                 nla_nest_end(msg, nl_freqs);
2403                         }
2404
2405                         nla_nest_end(msg, nl_band);
2406
2407                         if (state->split) {
2408                                 /* start again here */
2409                                 if (state->chan_start)
2410                                         band--;
2411                                 break;
2412                         }
2413                 }
2414                 nla_nest_end(msg, nl_bands);
2415
2416                 if (band < NUM_NL80211_BANDS)
2417                         state->band_start = band + 1;
2418                 else
2419                         state->band_start = 0;
2420
2421                 /* if bands & channels are done, continue outside */
2422                 if (state->band_start == 0 && state->chan_start == 0)
2423                         state->split_start++;
2424                 if (state->split)
2425                         break;
2426                 fallthrough;
2427         case 4:
2428                 nl_cmds = nla_nest_start_noflag(msg,
2429                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2430                 if (!nl_cmds)
2431                         goto nla_put_failure;
2432
2433                 i = nl80211_add_commands_unsplit(rdev, msg);
2434                 if (i < 0)
2435                         goto nla_put_failure;
2436                 if (state->split) {
2437                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2438                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2439                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2440                                 CMD(channel_switch, CHANNEL_SWITCH);
2441                         CMD(set_qos_map, SET_QOS_MAP);
2442                         if (rdev->wiphy.features &
2443                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2444                                 CMD(add_tx_ts, ADD_TX_TS);
2445                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2446                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2447                         CMD(update_ft_ies, UPDATE_FT_IES);
2448                         if (rdev->wiphy.sar_capa)
2449                                 CMD(set_sar_specs, SET_SAR_SPECS);
2450                 }
2451 #undef CMD
2452
2453                 nla_nest_end(msg, nl_cmds);
2454                 state->split_start++;
2455                 if (state->split)
2456                         break;
2457                 fallthrough;
2458         case 5:
2459                 if (rdev->ops->remain_on_channel &&
2460                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2461                     nla_put_u32(msg,
2462                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2463                                 rdev->wiphy.max_remain_on_channel_duration))
2464                         goto nla_put_failure;
2465
2466                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2467                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2468                         goto nla_put_failure;
2469
2470                 state->split_start++;
2471                 if (state->split)
2472                         break;
2473                 fallthrough;
2474         case 6:
2475 #ifdef CONFIG_PM
2476                 if (nl80211_send_wowlan(msg, rdev, state->split))
2477                         goto nla_put_failure;
2478                 state->split_start++;
2479                 if (state->split)
2480                         break;
2481 #else
2482                 state->split_start++;
2483 #endif
2484                 fallthrough;
2485         case 7:
2486                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2487                                         rdev->wiphy.software_iftypes))
2488                         goto nla_put_failure;
2489
2490                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2491                                                    state->split))
2492                         goto nla_put_failure;
2493
2494                 state->split_start++;
2495                 if (state->split)
2496                         break;
2497                 fallthrough;
2498         case 8:
2499                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2500                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2501                                 rdev->wiphy.ap_sme_capa))
2502                         goto nla_put_failure;
2503
2504                 features = rdev->wiphy.features;
2505                 /*
2506                  * We can only add the per-channel limit information if the
2507                  * dump is split, otherwise it makes it too big. Therefore
2508                  * only advertise it in that case.
2509                  */
2510                 if (state->split)
2511                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2512                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2513                         goto nla_put_failure;
2514
2515                 if (rdev->wiphy.ht_capa_mod_mask &&
2516                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2517                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2518                             rdev->wiphy.ht_capa_mod_mask))
2519                         goto nla_put_failure;
2520
2521                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2522                     rdev->wiphy.max_acl_mac_addrs &&
2523                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2524                                 rdev->wiphy.max_acl_mac_addrs))
2525                         goto nla_put_failure;
2526
2527                 /*
2528                  * Any information below this point is only available to
2529                  * applications that can deal with it being split. This
2530                  * helps ensure that newly added capabilities don't break
2531                  * older tools by overrunning their buffers.
2532                  *
2533                  * We still increment split_start so that in the split
2534                  * case we'll continue with more data in the next round,
2535                  * but break unconditionally so unsplit data stops here.
2536                  */
2537                 if (state->split)
2538                         state->split_start++;
2539                 else
2540                         state->split_start = 0;
2541                 break;
2542         case 9:
2543                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2544                         goto nla_put_failure;
2545
2546                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2547                                 rdev->wiphy.max_sched_scan_plans) ||
2548                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2549                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2550                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2551                                 rdev->wiphy.max_sched_scan_plan_iterations))
2552                         goto nla_put_failure;
2553
2554                 if (rdev->wiphy.extended_capabilities &&
2555                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2556                              rdev->wiphy.extended_capabilities_len,
2557                              rdev->wiphy.extended_capabilities) ||
2558                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2559                              rdev->wiphy.extended_capabilities_len,
2560                              rdev->wiphy.extended_capabilities_mask)))
2561                         goto nla_put_failure;
2562
2563                 if (rdev->wiphy.vht_capa_mod_mask &&
2564                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2565                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2566                             rdev->wiphy.vht_capa_mod_mask))
2567                         goto nla_put_failure;
2568
2569                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2570                             rdev->wiphy.perm_addr))
2571                         goto nla_put_failure;
2572
2573                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2574                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2575                             rdev->wiphy.addr_mask))
2576                         goto nla_put_failure;
2577
2578                 if (rdev->wiphy.n_addresses > 1) {
2579                         void *attr;
2580
2581                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2582                         if (!attr)
2583                                 goto nla_put_failure;
2584
2585                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2586                                 if (nla_put(msg, i + 1, ETH_ALEN,
2587                                             rdev->wiphy.addresses[i].addr))
2588                                         goto nla_put_failure;
2589
2590                         nla_nest_end(msg, attr);
2591                 }
2592
2593                 state->split_start++;
2594                 break;
2595         case 10:
2596                 if (nl80211_send_coalesce(msg, rdev))
2597                         goto nla_put_failure;
2598
2599                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2600                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2601                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2602                         goto nla_put_failure;
2603
2604                 if (rdev->wiphy.max_ap_assoc_sta &&
2605                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2606                                 rdev->wiphy.max_ap_assoc_sta))
2607                         goto nla_put_failure;
2608
2609                 state->split_start++;
2610                 break;
2611         case 11:
2612                 if (rdev->wiphy.n_vendor_commands) {
2613                         const struct nl80211_vendor_cmd_info *info;
2614                         struct nlattr *nested;
2615
2616                         nested = nla_nest_start_noflag(msg,
2617                                                        NL80211_ATTR_VENDOR_DATA);
2618                         if (!nested)
2619                                 goto nla_put_failure;
2620
2621                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2622                                 info = &rdev->wiphy.vendor_commands[i].info;
2623                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2624                                         goto nla_put_failure;
2625                         }
2626                         nla_nest_end(msg, nested);
2627                 }
2628
2629                 if (rdev->wiphy.n_vendor_events) {
2630                         const struct nl80211_vendor_cmd_info *info;
2631                         struct nlattr *nested;
2632
2633                         nested = nla_nest_start_noflag(msg,
2634                                                        NL80211_ATTR_VENDOR_EVENTS);
2635                         if (!nested)
2636                                 goto nla_put_failure;
2637
2638                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2639                                 info = &rdev->wiphy.vendor_events[i];
2640                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2641                                         goto nla_put_failure;
2642                         }
2643                         nla_nest_end(msg, nested);
2644                 }
2645                 state->split_start++;
2646                 break;
2647         case 12:
2648                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2649                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2650                                rdev->wiphy.max_num_csa_counters))
2651                         goto nla_put_failure;
2652
2653                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2654                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2655                         goto nla_put_failure;
2656
2657                 if (rdev->wiphy.max_sched_scan_reqs &&
2658                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2659                                 rdev->wiphy.max_sched_scan_reqs))
2660                         goto nla_put_failure;
2661
2662                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2663                             sizeof(rdev->wiphy.ext_features),
2664                             rdev->wiphy.ext_features))
2665                         goto nla_put_failure;
2666
2667                 if (rdev->wiphy.bss_select_support) {
2668                         struct nlattr *nested;
2669                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2670
2671                         nested = nla_nest_start_noflag(msg,
2672                                                        NL80211_ATTR_BSS_SELECT);
2673                         if (!nested)
2674                                 goto nla_put_failure;
2675
2676                         i = 0;
2677                         while (bss_select_support) {
2678                                 if ((bss_select_support & 1) &&
2679                                     nla_put_flag(msg, i))
2680                                         goto nla_put_failure;
2681                                 i++;
2682                                 bss_select_support >>= 1;
2683                         }
2684                         nla_nest_end(msg, nested);
2685                 }
2686
2687                 state->split_start++;
2688                 break;
2689         case 13:
2690                 if (rdev->wiphy.num_iftype_ext_capab &&
2691                     rdev->wiphy.iftype_ext_capab) {
2692                         struct nlattr *nested_ext_capab, *nested;
2693
2694                         nested = nla_nest_start_noflag(msg,
2695                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2696                         if (!nested)
2697                                 goto nla_put_failure;
2698
2699                         for (i = state->capa_start;
2700                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2701                                 const struct wiphy_iftype_ext_capab *capab;
2702
2703                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2704
2705                                 nested_ext_capab = nla_nest_start_noflag(msg,
2706                                                                          i);
2707                                 if (!nested_ext_capab ||
2708                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2709                                                 capab->iftype) ||
2710                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2711                                             capab->extended_capabilities_len,
2712                                             capab->extended_capabilities) ||
2713                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2714                                             capab->extended_capabilities_len,
2715                                             capab->extended_capabilities_mask))
2716                                         goto nla_put_failure;
2717
2718                                 nla_nest_end(msg, nested_ext_capab);
2719                                 if (state->split)
2720                                         break;
2721                         }
2722                         nla_nest_end(msg, nested);
2723                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2724                                 state->capa_start = i + 1;
2725                                 break;
2726                         }
2727                 }
2728
2729                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2730                                 rdev->wiphy.nan_supported_bands))
2731                         goto nla_put_failure;
2732
2733                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2734                                             NL80211_EXT_FEATURE_TXQS)) {
2735                         struct cfg80211_txq_stats txqstats = {};
2736                         int res;
2737
2738                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2739                         if (!res &&
2740                             !nl80211_put_txq_stats(msg, &txqstats,
2741                                                    NL80211_ATTR_TXQ_STATS))
2742                                 goto nla_put_failure;
2743
2744                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2745                                         rdev->wiphy.txq_limit))
2746                                 goto nla_put_failure;
2747                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2748                                         rdev->wiphy.txq_memory_limit))
2749                                 goto nla_put_failure;
2750                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2751                                         rdev->wiphy.txq_quantum))
2752                                 goto nla_put_failure;
2753                 }
2754
2755                 state->split_start++;
2756                 break;
2757         case 14:
2758                 if (nl80211_send_pmsr_capa(rdev, msg))
2759                         goto nla_put_failure;
2760
2761                 state->split_start++;
2762                 break;
2763         case 15:
2764                 if (rdev->wiphy.akm_suites &&
2765                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2766                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2767                             rdev->wiphy.akm_suites))
2768                         goto nla_put_failure;
2769
2770                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2771                         goto nla_put_failure;
2772
2773                 if (nl80211_put_tid_config_support(rdev, msg))
2774                         goto nla_put_failure;
2775                 state->split_start++;
2776                 break;
2777         case 16:
2778                 if (nl80211_put_sar_specs(rdev, msg))
2779                         goto nla_put_failure;
2780
2781                 /* done */
2782                 state->split_start = 0;
2783                 break;
2784         }
2785  finish:
2786         genlmsg_end(msg, hdr);
2787         return 0;
2788
2789  nla_put_failure:
2790         genlmsg_cancel(msg, hdr);
2791         return -EMSGSIZE;
2792 }
2793
2794 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2795                                     struct netlink_callback *cb,
2796                                     struct nl80211_dump_wiphy_state *state)
2797 {
2798         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2799         int ret;
2800
2801         if (!tb)
2802                 return -ENOMEM;
2803
2804         ret = nlmsg_parse_deprecated(cb->nlh,
2805                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2806                                      tb, nl80211_fam.maxattr,
2807                                      nl80211_policy, NULL);
2808         /* ignore parse errors for backward compatibility */
2809         if (ret) {
2810                 ret = 0;
2811                 goto out;
2812         }
2813
2814         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2815         if (tb[NL80211_ATTR_WIPHY])
2816                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2817         if (tb[NL80211_ATTR_WDEV])
2818                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2819         if (tb[NL80211_ATTR_IFINDEX]) {
2820                 struct net_device *netdev;
2821                 struct cfg80211_registered_device *rdev;
2822                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2823
2824                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2825                 if (!netdev) {
2826                         ret = -ENODEV;
2827                         goto out;
2828                 }
2829                 if (netdev->ieee80211_ptr) {
2830                         rdev = wiphy_to_rdev(
2831                                 netdev->ieee80211_ptr->wiphy);
2832                         state->filter_wiphy = rdev->wiphy_idx;
2833                 }
2834         }
2835
2836         ret = 0;
2837 out:
2838         kfree(tb);
2839         return ret;
2840 }
2841
2842 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2843 {
2844         int idx = 0, ret;
2845         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2846         struct cfg80211_registered_device *rdev;
2847
2848         rtnl_lock();
2849         if (!state) {
2850                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2851                 if (!state) {
2852                         rtnl_unlock();
2853                         return -ENOMEM;
2854                 }
2855                 state->filter_wiphy = -1;
2856                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2857                 if (ret) {
2858                         kfree(state);
2859                         rtnl_unlock();
2860                         return ret;
2861                 }
2862                 cb->args[0] = (long)state;
2863         }
2864
2865         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2866                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2867                         continue;
2868                 if (++idx <= state->start)
2869                         continue;
2870                 if (state->filter_wiphy != -1 &&
2871                     state->filter_wiphy != rdev->wiphy_idx)
2872                         continue;
2873                 /* attempt to fit multiple wiphy data chunks into the skb */
2874                 do {
2875                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2876                                                  skb,
2877                                                  NETLINK_CB(cb->skb).portid,
2878                                                  cb->nlh->nlmsg_seq,
2879                                                  NLM_F_MULTI, state);
2880                         if (ret < 0) {
2881                                 /*
2882                                  * If sending the wiphy data didn't fit (ENOBUFS
2883                                  * or EMSGSIZE returned), this SKB is still
2884                                  * empty (so it's not too big because another
2885                                  * wiphy dataset is already in the skb) and
2886                                  * we've not tried to adjust the dump allocation
2887                                  * yet ... then adjust the alloc size to be
2888                                  * bigger, and return 1 but with the empty skb.
2889                                  * This results in an empty message being RX'ed
2890                                  * in userspace, but that is ignored.
2891                                  *
2892                                  * We can then retry with the larger buffer.
2893                                  */
2894                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2895                                     !skb->len && !state->split &&
2896                                     cb->min_dump_alloc < 4096) {
2897                                         cb->min_dump_alloc = 4096;
2898                                         state->split_start = 0;
2899                                         rtnl_unlock();
2900                                         return 1;
2901                                 }
2902                                 idx--;
2903                                 break;
2904                         }
2905                 } while (state->split_start > 0);
2906                 break;
2907         }
2908         rtnl_unlock();
2909
2910         state->start = idx;
2911
2912         return skb->len;
2913 }
2914
2915 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2916 {
2917         kfree((void *)cb->args[0]);
2918         return 0;
2919 }
2920
2921 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2922 {
2923         struct sk_buff *msg;
2924         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2925         struct nl80211_dump_wiphy_state state = {};
2926
2927         msg = nlmsg_new(4096, GFP_KERNEL);
2928         if (!msg)
2929                 return -ENOMEM;
2930
2931         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2932                                info->snd_portid, info->snd_seq, 0,
2933                                &state) < 0) {
2934                 nlmsg_free(msg);
2935                 return -ENOBUFS;
2936         }
2937
2938         return genlmsg_reply(msg, info);
2939 }
2940
2941 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2942         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2943         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2944         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2945         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2946         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2947 };
2948
2949 static int parse_txq_params(struct nlattr *tb[],
2950                             struct ieee80211_txq_params *txq_params)
2951 {
2952         u8 ac;
2953
2954         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2955             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2956             !tb[NL80211_TXQ_ATTR_AIFS])
2957                 return -EINVAL;
2958
2959         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2960         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2961         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2962         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2963         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2964
2965         if (ac >= NL80211_NUM_ACS)
2966                 return -EINVAL;
2967         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2968         return 0;
2969 }
2970
2971 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2972 {
2973         /*
2974          * You can only set the channel explicitly for some interfaces,
2975          * most have their channel managed via their respective
2976          * "establish a connection" command (connect, join, ...)
2977          *
2978          * For AP/GO and mesh mode, the channel can be set with the
2979          * channel userspace API, but is only stored and passed to the
2980          * low-level driver when the AP starts or the mesh is joined.
2981          * This is for backward compatibility, userspace can also give
2982          * the channel in the start-ap or join-mesh commands instead.
2983          *
2984          * Monitors are special as they are normally slaved to
2985          * whatever else is going on, so they have their own special
2986          * operation to set the monitor channel if possible.
2987          */
2988         return !wdev ||
2989                 wdev->iftype == NL80211_IFTYPE_AP ||
2990                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2991                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2992                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2993 }
2994
2995 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2996                           struct genl_info *info,
2997                           struct cfg80211_chan_def *chandef)
2998 {
2999         struct netlink_ext_ack *extack = info->extack;
3000         struct nlattr **attrs = info->attrs;
3001         u32 control_freq;
3002
3003         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3004                 return -EINVAL;
3005
3006         control_freq = MHZ_TO_KHZ(
3007                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3008         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3009                 control_freq +=
3010                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3011
3012         memset(chandef, 0, sizeof(*chandef));
3013         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3014         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3015         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3016         chandef->freq1_offset = control_freq % 1000;
3017         chandef->center_freq2 = 0;
3018
3019         /* Primary channel not allowed */
3020         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3021                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3022                                     "Channel is disabled");
3023                 return -EINVAL;
3024         }
3025
3026         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3027                 enum nl80211_channel_type chantype;
3028
3029                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3030
3031                 switch (chantype) {
3032                 case NL80211_CHAN_NO_HT:
3033                 case NL80211_CHAN_HT20:
3034                 case NL80211_CHAN_HT40PLUS:
3035                 case NL80211_CHAN_HT40MINUS:
3036                         cfg80211_chandef_create(chandef, chandef->chan,
3037                                                 chantype);
3038                         /* user input for center_freq is incorrect */
3039                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3040                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3041                                 NL_SET_ERR_MSG_ATTR(extack,
3042                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3043                                                     "bad center frequency 1");
3044                                 return -EINVAL;
3045                         }
3046                         /* center_freq2 must be zero */
3047                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3048                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3049                                 NL_SET_ERR_MSG_ATTR(extack,
3050                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3051                                                     "center frequency 2 can't be used");
3052                                 return -EINVAL;
3053                         }
3054                         break;
3055                 default:
3056                         NL_SET_ERR_MSG_ATTR(extack,
3057                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3058                                             "invalid channel type");
3059                         return -EINVAL;
3060                 }
3061         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3062                 chandef->width =
3063                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3064                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3065                         chandef->center_freq1 =
3066                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3067                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3068                                 chandef->freq1_offset = nla_get_u32(
3069                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3070                         else
3071                                 chandef->freq1_offset = 0;
3072                 }
3073                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3074                         chandef->center_freq2 =
3075                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3076         }
3077
3078         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3079                 chandef->edmg.channels =
3080                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3081
3082                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3083                         chandef->edmg.bw_config =
3084                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3085         } else {
3086                 chandef->edmg.bw_config = 0;
3087                 chandef->edmg.channels = 0;
3088         }
3089
3090         if (!cfg80211_chandef_valid(chandef)) {
3091                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3092                 return -EINVAL;
3093         }
3094
3095         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3096                                      IEEE80211_CHAN_DISABLED)) {
3097                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3098                 return -EINVAL;
3099         }
3100
3101         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3102              chandef->width == NL80211_CHAN_WIDTH_10) &&
3103             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3104                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3105                 return -EINVAL;
3106         }
3107
3108         return 0;
3109 }
3110
3111 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3112                                  struct net_device *dev,
3113                                  struct genl_info *info)
3114 {
3115         struct cfg80211_chan_def chandef;
3116         int result;
3117         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3118         struct wireless_dev *wdev = NULL;
3119
3120         if (dev)
3121                 wdev = dev->ieee80211_ptr;
3122         if (!nl80211_can_set_dev_channel(wdev))
3123                 return -EOPNOTSUPP;
3124         if (wdev)
3125                 iftype = wdev->iftype;
3126
3127         result = nl80211_parse_chandef(rdev, info, &chandef);
3128         if (result)
3129                 return result;
3130
3131         switch (iftype) {
3132         case NL80211_IFTYPE_AP:
3133         case NL80211_IFTYPE_P2P_GO:
3134                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3135                                                    iftype)) {
3136                         result = -EINVAL;
3137                         break;
3138                 }
3139                 if (wdev->beacon_interval) {
3140                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3141                             !(rdev->wiphy.features &
3142                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3143                                 result = -EBUSY;
3144                                 break;
3145                         }
3146
3147                         /* Only allow dynamic channel width changes */
3148                         if (chandef.chan != wdev->preset_chandef.chan) {
3149                                 result = -EBUSY;
3150                                 break;
3151                         }
3152                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3153                         if (result)
3154                                 break;
3155                 }
3156                 wdev->preset_chandef = chandef;
3157                 result = 0;
3158                 break;
3159         case NL80211_IFTYPE_MESH_POINT:
3160                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3161                 break;
3162         case NL80211_IFTYPE_MONITOR:
3163                 result = cfg80211_set_monitor_channel(rdev, &chandef);
3164                 break;
3165         default:
3166                 result = -EINVAL;
3167         }
3168
3169         return result;
3170 }
3171
3172 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3173 {
3174         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3175         struct net_device *netdev = info->user_ptr[1];
3176
3177         return __nl80211_set_channel(rdev, netdev, info);
3178 }
3179
3180 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3181 {
3182         struct cfg80211_registered_device *rdev = NULL;
3183         struct net_device *netdev = NULL;
3184         struct wireless_dev *wdev;
3185         int result = 0, rem_txq_params = 0;
3186         struct nlattr *nl_txq_params;
3187         u32 changed;
3188         u8 retry_short = 0, retry_long = 0;
3189         u32 frag_threshold = 0, rts_threshold = 0;
3190         u8 coverage_class = 0;
3191         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3192
3193         rtnl_lock();
3194         /*
3195          * Try to find the wiphy and netdev. Normally this
3196          * function shouldn't need the netdev, but this is
3197          * done for backward compatibility -- previously
3198          * setting the channel was done per wiphy, but now
3199          * it is per netdev. Previous userland like hostapd
3200          * also passed a netdev to set_wiphy, so that it is
3201          * possible to let that go to the right netdev!
3202          */
3203
3204         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3205                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3206
3207                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3208                 if (netdev && netdev->ieee80211_ptr)
3209                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3210                 else
3211                         netdev = NULL;
3212         }
3213
3214         if (!netdev) {
3215                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3216                                                   info->attrs);
3217                 if (IS_ERR(rdev)) {
3218                         rtnl_unlock();
3219                         return PTR_ERR(rdev);
3220                 }
3221                 wdev = NULL;
3222                 netdev = NULL;
3223                 result = 0;
3224         } else
3225                 wdev = netdev->ieee80211_ptr;
3226
3227         wiphy_lock(&rdev->wiphy);
3228
3229         /*
3230          * end workaround code, by now the rdev is available
3231          * and locked, and wdev may or may not be NULL.
3232          */
3233
3234         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3235                 result = cfg80211_dev_rename(
3236                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3237         rtnl_unlock();
3238
3239         if (result)
3240                 goto out;
3241
3242         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3243                 struct ieee80211_txq_params txq_params;
3244                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3245
3246                 if (!rdev->ops->set_txq_params) {
3247                         result = -EOPNOTSUPP;
3248                         goto out;
3249                 }
3250
3251                 if (!netdev) {
3252                         result = -EINVAL;
3253                         goto out;
3254                 }
3255
3256                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3257                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3258                         result = -EINVAL;
3259                         goto out;
3260                 }
3261
3262                 if (!netif_running(netdev)) {
3263                         result = -ENETDOWN;
3264                         goto out;
3265                 }
3266
3267                 nla_for_each_nested(nl_txq_params,
3268                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3269                                     rem_txq_params) {
3270                         result = nla_parse_nested_deprecated(tb,
3271                                                              NL80211_TXQ_ATTR_MAX,
3272                                                              nl_txq_params,
3273                                                              txq_params_policy,
3274                                                              info->extack);
3275                         if (result)
3276                                 goto out;
3277                         result = parse_txq_params(tb, &txq_params);
3278                         if (result)
3279                                 goto out;
3280
3281                         result = rdev_set_txq_params(rdev, netdev,
3282                                                      &txq_params);
3283                         if (result)
3284                                 goto out;
3285                 }
3286         }
3287
3288         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3289                 result = __nl80211_set_channel(
3290                         rdev,
3291                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3292                         info);
3293                 if (result)
3294                         goto out;
3295         }
3296
3297         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3298                 struct wireless_dev *txp_wdev = wdev;
3299                 enum nl80211_tx_power_setting type;
3300                 int idx, mbm = 0;
3301
3302                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3303                         txp_wdev = NULL;
3304
3305                 if (!rdev->ops->set_tx_power) {
3306                         result = -EOPNOTSUPP;
3307                         goto out;
3308                 }
3309
3310                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3311                 type = nla_get_u32(info->attrs[idx]);
3312
3313                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3314                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3315                         result = -EINVAL;
3316                         goto out;
3317                 }
3318
3319                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3320                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3321                         mbm = nla_get_u32(info->attrs[idx]);
3322                 }
3323
3324                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3325                 if (result)
3326                         goto out;
3327         }
3328
3329         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3330             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3331                 u32 tx_ant, rx_ant;
3332
3333                 if ((!rdev->wiphy.available_antennas_tx &&
3334                      !rdev->wiphy.available_antennas_rx) ||
3335                     !rdev->ops->set_antenna) {
3336                         result = -EOPNOTSUPP;
3337                         goto out;
3338                 }
3339
3340                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3341                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3342
3343                 /* reject antenna configurations which don't match the
3344                  * available antenna masks, except for the "all" mask */
3345                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3346                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3347                         result = -EINVAL;
3348                         goto out;
3349                 }
3350
3351                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3352                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3353
3354                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3355                 if (result)
3356                         goto out;
3357         }
3358
3359         changed = 0;
3360
3361         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3362                 retry_short = nla_get_u8(
3363                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3364
3365                 changed |= WIPHY_PARAM_RETRY_SHORT;
3366         }
3367
3368         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3369                 retry_long = nla_get_u8(
3370                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3371
3372                 changed |= WIPHY_PARAM_RETRY_LONG;
3373         }
3374
3375         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3376                 frag_threshold = nla_get_u32(
3377                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3378                 if (frag_threshold < 256) {
3379                         result = -EINVAL;
3380                         goto out;
3381                 }
3382
3383                 if (frag_threshold != (u32) -1) {
3384                         /*
3385                          * Fragments (apart from the last one) are required to
3386                          * have even length. Make the fragmentation code
3387                          * simpler by stripping LSB should someone try to use
3388                          * odd threshold value.
3389                          */
3390                         frag_threshold &= ~0x1;
3391                 }
3392                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3393         }
3394
3395         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3396                 rts_threshold = nla_get_u32(
3397                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3398                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3399         }
3400
3401         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3402                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3403                         result = -EINVAL;
3404                         goto out;
3405                 }
3406
3407                 coverage_class = nla_get_u8(
3408                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3409                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3410         }
3411
3412         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3413                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3414                         result = -EOPNOTSUPP;
3415                         goto out;
3416                 }
3417
3418                 changed |= WIPHY_PARAM_DYN_ACK;
3419         }
3420
3421         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3422                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3423                                              NL80211_EXT_FEATURE_TXQS)) {
3424                         result = -EOPNOTSUPP;
3425                         goto out;
3426                 }
3427                 txq_limit = nla_get_u32(
3428                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3429                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3430         }
3431
3432         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3433                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3434                                              NL80211_EXT_FEATURE_TXQS)) {
3435                         result = -EOPNOTSUPP;
3436                         goto out;
3437                 }
3438                 txq_memory_limit = nla_get_u32(
3439                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3440                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3441         }
3442
3443         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3444                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3445                                              NL80211_EXT_FEATURE_TXQS)) {
3446                         result = -EOPNOTSUPP;
3447                         goto out;
3448                 }
3449                 txq_quantum = nla_get_u32(
3450                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3451                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3452         }
3453
3454         if (changed) {
3455                 u8 old_retry_short, old_retry_long;
3456                 u32 old_frag_threshold, old_rts_threshold;
3457                 u8 old_coverage_class;
3458                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3459
3460                 if (!rdev->ops->set_wiphy_params) {
3461                         result = -EOPNOTSUPP;
3462                         goto out;
3463                 }
3464
3465                 old_retry_short = rdev->wiphy.retry_short;
3466                 old_retry_long = rdev->wiphy.retry_long;
3467                 old_frag_threshold = rdev->wiphy.frag_threshold;
3468                 old_rts_threshold = rdev->wiphy.rts_threshold;
3469                 old_coverage_class = rdev->wiphy.coverage_class;
3470                 old_txq_limit = rdev->wiphy.txq_limit;
3471                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3472                 old_txq_quantum = rdev->wiphy.txq_quantum;
3473
3474                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3475                         rdev->wiphy.retry_short = retry_short;
3476                 if (changed & WIPHY_PARAM_RETRY_LONG)
3477                         rdev->wiphy.retry_long = retry_long;
3478                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3479                         rdev->wiphy.frag_threshold = frag_threshold;
3480                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3481                         rdev->wiphy.rts_threshold = rts_threshold;
3482                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3483                         rdev->wiphy.coverage_class = coverage_class;
3484                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3485                         rdev->wiphy.txq_limit = txq_limit;
3486                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3487                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3488                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3489                         rdev->wiphy.txq_quantum = txq_quantum;
3490
3491                 result = rdev_set_wiphy_params(rdev, changed);
3492                 if (result) {
3493                         rdev->wiphy.retry_short = old_retry_short;
3494                         rdev->wiphy.retry_long = old_retry_long;
3495                         rdev->wiphy.frag_threshold = old_frag_threshold;
3496                         rdev->wiphy.rts_threshold = old_rts_threshold;
3497                         rdev->wiphy.coverage_class = old_coverage_class;
3498                         rdev->wiphy.txq_limit = old_txq_limit;
3499                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3500                         rdev->wiphy.txq_quantum = old_txq_quantum;
3501                         goto out;
3502                 }
3503         }
3504
3505         result = 0;
3506
3507 out:
3508         wiphy_unlock(&rdev->wiphy);
3509         return result;
3510 }
3511
3512 static int nl80211_send_chandef(struct sk_buff *msg,
3513                                 const struct cfg80211_chan_def *chandef)
3514 {
3515         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3516                 return -EINVAL;
3517
3518         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3519                         chandef->chan->center_freq))
3520                 return -ENOBUFS;
3521         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3522                         chandef->chan->freq_offset))
3523                 return -ENOBUFS;
3524         switch (chandef->width) {
3525         case NL80211_CHAN_WIDTH_20_NOHT:
3526         case NL80211_CHAN_WIDTH_20:
3527         case NL80211_CHAN_WIDTH_40:
3528                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3529                                 cfg80211_get_chandef_type(chandef)))
3530                         return -ENOBUFS;
3531                 break;
3532         default:
3533                 break;
3534         }
3535         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3536                 return -ENOBUFS;
3537         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3538                 return -ENOBUFS;
3539         if (chandef->center_freq2 &&
3540             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3541                 return -ENOBUFS;
3542         return 0;
3543 }
3544
3545 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3546                               struct cfg80211_registered_device *rdev,
3547                               struct wireless_dev *wdev,
3548                               enum nl80211_commands cmd)
3549 {
3550         struct net_device *dev = wdev->netdev;
3551         void *hdr;
3552
3553         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3554                 cmd != NL80211_CMD_DEL_INTERFACE &&
3555                 cmd != NL80211_CMD_SET_INTERFACE);
3556
3557         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3558         if (!hdr)
3559                 return -1;
3560
3561         if (dev &&
3562             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3563              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3564                 goto nla_put_failure;
3565
3566         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3567             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3568             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3569                               NL80211_ATTR_PAD) ||
3570             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3571             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3572                         rdev->devlist_generation ^
3573                         (cfg80211_rdev_list_generation << 2)) ||
3574             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3575                 goto nla_put_failure;
3576
3577         if (rdev->ops->get_channel) {
3578                 int ret;
3579                 struct cfg80211_chan_def chandef = {};
3580
3581                 ret = rdev_get_channel(rdev, wdev, &chandef);
3582                 if (ret == 0) {
3583                         if (nl80211_send_chandef(msg, &chandef))
3584                                 goto nla_put_failure;
3585                 }
3586         }
3587
3588         if (rdev->ops->get_tx_power) {
3589                 int dbm, ret;
3590
3591                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3592                 if (ret == 0 &&
3593                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3594                                 DBM_TO_MBM(dbm)))
3595                         goto nla_put_failure;
3596         }
3597
3598         wdev_lock(wdev);
3599         switch (wdev->iftype) {
3600         case NL80211_IFTYPE_AP:
3601                 if (wdev->ssid_len &&
3602                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3603                         goto nla_put_failure_locked;
3604                 break;
3605         case NL80211_IFTYPE_STATION:
3606         case NL80211_IFTYPE_P2P_CLIENT:
3607         case NL80211_IFTYPE_ADHOC: {
3608                 const u8 *ssid_ie;
3609                 if (!wdev->current_bss)
3610                         break;
3611                 rcu_read_lock();
3612                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3613                                                WLAN_EID_SSID);
3614                 if (ssid_ie &&
3615                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3616                         goto nla_put_failure_rcu_locked;
3617                 rcu_read_unlock();
3618                 break;
3619                 }
3620         default:
3621                 /* nothing */
3622                 break;
3623         }
3624         wdev_unlock(wdev);
3625
3626         if (rdev->ops->get_txq_stats) {
3627                 struct cfg80211_txq_stats txqstats = {};
3628                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3629
3630                 if (ret == 0 &&
3631                     !nl80211_put_txq_stats(msg, &txqstats,
3632                                            NL80211_ATTR_TXQ_STATS))
3633                         goto nla_put_failure;
3634         }
3635
3636         genlmsg_end(msg, hdr);
3637         return 0;
3638
3639  nla_put_failure_rcu_locked:
3640         rcu_read_unlock();
3641  nla_put_failure_locked:
3642         wdev_unlock(wdev);
3643  nla_put_failure:
3644         genlmsg_cancel(msg, hdr);
3645         return -EMSGSIZE;
3646 }
3647
3648 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3649 {
3650         int wp_idx = 0;
3651         int if_idx = 0;
3652         int wp_start = cb->args[0];
3653         int if_start = cb->args[1];
3654         int filter_wiphy = -1;
3655         struct cfg80211_registered_device *rdev;
3656         struct wireless_dev *wdev;
3657         int ret;
3658
3659         rtnl_lock();
3660         if (!cb->args[2]) {
3661                 struct nl80211_dump_wiphy_state state = {
3662                         .filter_wiphy = -1,
3663                 };
3664
3665                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3666                 if (ret)
3667                         goto out_unlock;
3668
3669                 filter_wiphy = state.filter_wiphy;
3670
3671                 /*
3672                  * if filtering, set cb->args[2] to +1 since 0 is the default
3673                  * value needed to determine that parsing is necessary.
3674                  */
3675                 if (filter_wiphy >= 0)
3676                         cb->args[2] = filter_wiphy + 1;
3677                 else
3678                         cb->args[2] = -1;
3679         } else if (cb->args[2] > 0) {
3680                 filter_wiphy = cb->args[2] - 1;
3681         }
3682
3683         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3684                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3685                         continue;
3686                 if (wp_idx < wp_start) {
3687                         wp_idx++;
3688                         continue;
3689                 }
3690
3691                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3692                         continue;
3693
3694                 if_idx = 0;
3695
3696                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3697                         if (if_idx < if_start) {
3698                                 if_idx++;
3699                                 continue;
3700                         }
3701                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3702                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3703                                                rdev, wdev,
3704                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3705                                 goto out;
3706                         }
3707                         if_idx++;
3708                 }
3709
3710                 wp_idx++;
3711         }
3712  out:
3713         cb->args[0] = wp_idx;
3714         cb->args[1] = if_idx;
3715
3716         ret = skb->len;
3717  out_unlock:
3718         rtnl_unlock();
3719
3720         return ret;
3721 }
3722
3723 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3724 {
3725         struct sk_buff *msg;
3726         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3727         struct wireless_dev *wdev = info->user_ptr[1];
3728
3729         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3730         if (!msg)
3731                 return -ENOMEM;
3732
3733         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3734                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3735                 nlmsg_free(msg);
3736                 return -ENOBUFS;
3737         }
3738
3739         return genlmsg_reply(msg, info);
3740 }
3741
3742 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3743         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3744         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3745         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3746         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3747         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3748         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3749 };
3750
3751 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3752 {
3753         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3754         int flag;
3755
3756         *mntrflags = 0;
3757
3758         if (!nla)
3759                 return -EINVAL;
3760
3761         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3762                 return -EINVAL;
3763
3764         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3765                 if (flags[flag])
3766                         *mntrflags |= (1<<flag);
3767
3768         *mntrflags |= MONITOR_FLAG_CHANGED;
3769
3770         return 0;
3771 }
3772
3773 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3774                                      enum nl80211_iftype type,
3775                                      struct genl_info *info,
3776                                      struct vif_params *params)
3777 {
3778         bool change = false;
3779         int err;
3780
3781         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3782                 if (type != NL80211_IFTYPE_MONITOR)
3783                         return -EINVAL;
3784
3785                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3786                                           &params->flags);
3787                 if (err)
3788                         return err;
3789
3790                 change = true;
3791         }
3792
3793         if (params->flags & MONITOR_FLAG_ACTIVE &&
3794             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3795                 return -EOPNOTSUPP;
3796
3797         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3798                 const u8 *mumimo_groups;
3799                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3800
3801                 if (type != NL80211_IFTYPE_MONITOR)
3802                         return -EINVAL;
3803
3804                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3805                         return -EOPNOTSUPP;
3806
3807                 mumimo_groups =
3808                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3809
3810                 /* bits 0 and 63 are reserved and must be zero */
3811                 if ((mumimo_groups[0] & BIT(0)) ||
3812                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3813                         return -EINVAL;
3814
3815                 params->vht_mumimo_groups = mumimo_groups;
3816                 change = true;
3817         }
3818
3819         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3820                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3821
3822                 if (type != NL80211_IFTYPE_MONITOR)
3823                         return -EINVAL;
3824
3825                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3826                         return -EOPNOTSUPP;
3827
3828                 params->vht_mumimo_follow_addr =
3829                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3830                 change = true;
3831         }
3832
3833         return change ? 1 : 0;
3834 }
3835
3836 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3837                                struct net_device *netdev, u8 use_4addr,
3838                                enum nl80211_iftype iftype)
3839 {
3840         if (!use_4addr) {
3841                 if (netdev && netif_is_bridge_port(netdev))
3842                         return -EBUSY;
3843                 return 0;
3844         }
3845
3846         switch (iftype) {
3847         case NL80211_IFTYPE_AP_VLAN:
3848                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3849                         return 0;
3850                 break;
3851         case NL80211_IFTYPE_STATION:
3852                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3853                         return 0;
3854                 break;
3855         default:
3856                 break;
3857         }
3858
3859         return -EOPNOTSUPP;
3860 }
3861
3862 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3863 {
3864         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3865         struct vif_params params;
3866         int err;
3867         enum nl80211_iftype otype, ntype;
3868         struct net_device *dev = info->user_ptr[1];
3869         bool change = false;
3870
3871         memset(&params, 0, sizeof(params));
3872
3873         otype = ntype = dev->ieee80211_ptr->iftype;
3874
3875         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3876                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3877                 if (otype != ntype)
3878                         change = true;
3879         }
3880
3881         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3882                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3883
3884                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3885                         return -EINVAL;
3886                 if (netif_running(dev))
3887                         return -EBUSY;
3888
3889                 wdev_lock(wdev);
3890                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3891                              IEEE80211_MAX_MESH_ID_LEN);
3892                 wdev->mesh_id_up_len =
3893                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3894                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3895                        wdev->mesh_id_up_len);
3896                 wdev_unlock(wdev);
3897         }
3898
3899         if (info->attrs[NL80211_ATTR_4ADDR]) {
3900                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3901                 change = true;
3902                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3903                 if (err)
3904                         return err;
3905         } else {
3906                 params.use_4addr = -1;
3907         }
3908
3909         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3910         if (err < 0)
3911                 return err;
3912         if (err > 0)
3913                 change = true;
3914
3915         if (change)
3916                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3917         else
3918                 err = 0;
3919
3920         if (!err && params.use_4addr != -1)
3921                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3922
3923         if (change && !err) {
3924                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3925
3926                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3927         }
3928
3929         return err;
3930 }
3931
3932 static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3933 {
3934         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3935         struct vif_params params;
3936         struct wireless_dev *wdev;
3937         struct sk_buff *msg;
3938         int err;
3939         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3940
3941         memset(&params, 0, sizeof(params));
3942
3943         if (!info->attrs[NL80211_ATTR_IFNAME])
3944                 return -EINVAL;
3945
3946         if (info->attrs[NL80211_ATTR_IFTYPE])
3947                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3948
3949         if (!rdev->ops->add_virtual_intf)
3950                 return -EOPNOTSUPP;
3951
3952         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3953              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3954             info->attrs[NL80211_ATTR_MAC]) {
3955                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3956                            ETH_ALEN);
3957                 if (!is_valid_ether_addr(params.macaddr))
3958                         return -EADDRNOTAVAIL;
3959         }
3960
3961         if (info->attrs[NL80211_ATTR_4ADDR]) {
3962                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3963                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3964                 if (err)
3965                         return err;
3966         }
3967
3968         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3969                 return -EOPNOTSUPP;
3970
3971         err = nl80211_parse_mon_options(rdev, type, info, &params);
3972         if (err < 0)
3973                 return err;
3974
3975         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3976         if (!msg)
3977                 return -ENOMEM;
3978
3979         wdev = rdev_add_virtual_intf(rdev,
3980                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3981                                 NET_NAME_USER, type, &params);
3982         if (WARN_ON(!wdev)) {
3983                 nlmsg_free(msg);
3984                 return -EPROTO;
3985         } else if (IS_ERR(wdev)) {
3986                 nlmsg_free(msg);
3987                 return PTR_ERR(wdev);
3988         }
3989
3990         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3991                 wdev->owner_nlportid = info->snd_portid;
3992
3993         switch (type) {
3994         case NL80211_IFTYPE_MESH_POINT:
3995                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3996                         break;
3997                 wdev_lock(wdev);
3998                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3999                              IEEE80211_MAX_MESH_ID_LEN);
4000                 wdev->mesh_id_up_len =
4001                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4002                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4003                        wdev->mesh_id_up_len);
4004                 wdev_unlock(wdev);
4005                 break;
4006         case NL80211_IFTYPE_NAN:
4007         case NL80211_IFTYPE_P2P_DEVICE:
4008                 /*
4009                  * P2P Device and NAN do not have a netdev, so don't go
4010                  * through the netdev notifier and must be added here
4011                  */
4012                 cfg80211_init_wdev(wdev);
4013                 cfg80211_register_wdev(rdev, wdev);
4014                 break;
4015         default:
4016                 break;
4017         }
4018
4019         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4020                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4021                 nlmsg_free(msg);
4022                 return -ENOBUFS;
4023         }
4024
4025         return genlmsg_reply(msg, info);
4026 }
4027
4028 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
4029 {
4030         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4031         int ret;
4032
4033         /* to avoid failing a new interface creation due to pending removal */
4034         cfg80211_destroy_ifaces(rdev);
4035
4036         wiphy_lock(&rdev->wiphy);
4037         ret = _nl80211_new_interface(skb, info);
4038         wiphy_unlock(&rdev->wiphy);
4039
4040         return ret;
4041 }
4042
4043 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4044 {
4045         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4046         struct wireless_dev *wdev = info->user_ptr[1];
4047
4048         if (!rdev->ops->del_virtual_intf)
4049                 return -EOPNOTSUPP;
4050
4051         /*
4052          * We hold RTNL, so this is safe, without RTNL opencount cannot
4053          * reach 0, and thus the rdev cannot be deleted.
4054          *
4055          * We need to do it for the dev_close(), since that will call
4056          * the netdev notifiers, and we need to acquire the mutex there
4057          * but don't know if we get there from here or from some other
4058          * place (e.g. "ip link set ... down").
4059          */
4060         mutex_unlock(&rdev->wiphy.mtx);
4061
4062         /*
4063          * If we remove a wireless device without a netdev then clear
4064          * user_ptr[1] so that nl80211_post_doit won't dereference it
4065          * to check if it needs to do dev_put(). Otherwise it crashes
4066          * since the wdev has been freed, unlike with a netdev where
4067          * we need the dev_put() for the netdev to really be freed.
4068          */
4069         if (!wdev->netdev)
4070                 info->user_ptr[1] = NULL;
4071         else
4072                 dev_close(wdev->netdev);
4073
4074         mutex_lock(&rdev->wiphy.mtx);
4075
4076         return rdev_del_virtual_intf(rdev, wdev);
4077 }
4078
4079 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4080 {
4081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4082         struct net_device *dev = info->user_ptr[1];
4083         u16 noack_map;
4084
4085         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4086                 return -EINVAL;
4087
4088         if (!rdev->ops->set_noack_map)
4089                 return -EOPNOTSUPP;
4090
4091         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4092
4093         return rdev_set_noack_map(rdev, dev, noack_map);
4094 }
4095
4096 struct get_key_cookie {
4097         struct sk_buff *msg;
4098         int error;
4099         int idx;
4100 };
4101
4102 static void get_key_callback(void *c, struct key_params *params)
4103 {
4104         struct nlattr *key;
4105         struct get_key_cookie *cookie = c;
4106
4107         if ((params->key &&
4108              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4109                      params->key_len, params->key)) ||
4110             (params->seq &&
4111              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4112                      params->seq_len, params->seq)) ||
4113             (params->cipher &&
4114              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4115                          params->cipher)))
4116                 goto nla_put_failure;
4117
4118         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4119         if (!key)
4120                 goto nla_put_failure;
4121
4122         if ((params->key &&
4123              nla_put(cookie->msg, NL80211_KEY_DATA,
4124                      params->key_len, params->key)) ||
4125             (params->seq &&
4126              nla_put(cookie->msg, NL80211_KEY_SEQ,
4127                      params->seq_len, params->seq)) ||
4128             (params->cipher &&
4129              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4130                          params->cipher)))
4131                 goto nla_put_failure;
4132
4133         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4134                 goto nla_put_failure;
4135
4136         nla_nest_end(cookie->msg, key);
4137
4138         return;
4139  nla_put_failure:
4140         cookie->error = 1;
4141 }
4142
4143 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4144 {
4145         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4146         int err;
4147         struct net_device *dev = info->user_ptr[1];
4148         u8 key_idx = 0;
4149         const u8 *mac_addr = NULL;
4150         bool pairwise;
4151         struct get_key_cookie cookie = {
4152                 .error = 0,
4153         };
4154         void *hdr;
4155         struct sk_buff *msg;
4156         bool bigtk_support = false;
4157
4158         if (wiphy_ext_feature_isset(&rdev->wiphy,
4159                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4160                 bigtk_support = true;
4161
4162         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4163              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4164             wiphy_ext_feature_isset(&rdev->wiphy,
4165                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4166                 bigtk_support = true;
4167
4168         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4169                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4170
4171                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4172                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4173                         return -EINVAL;
4174                 }
4175         }
4176
4177         if (info->attrs[NL80211_ATTR_MAC])
4178                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4179
4180         pairwise = !!mac_addr;
4181         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4182                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4183
4184                 if (kt != NL80211_KEYTYPE_GROUP &&
4185                     kt != NL80211_KEYTYPE_PAIRWISE)
4186                         return -EINVAL;
4187                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4188         }
4189
4190         if (!rdev->ops->get_key)
4191                 return -EOPNOTSUPP;
4192
4193         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4194                 return -ENOENT;
4195
4196         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4197         if (!msg)
4198                 return -ENOMEM;
4199
4200         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4201                              NL80211_CMD_NEW_KEY);
4202         if (!hdr)
4203                 goto nla_put_failure;
4204
4205         cookie.msg = msg;
4206         cookie.idx = key_idx;
4207
4208         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4209             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4210                 goto nla_put_failure;
4211         if (mac_addr &&
4212             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4213                 goto nla_put_failure;
4214
4215         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4216                            get_key_callback);
4217
4218         if (err)
4219                 goto free_msg;
4220
4221         if (cookie.error)
4222                 goto nla_put_failure;
4223
4224         genlmsg_end(msg, hdr);
4225         return genlmsg_reply(msg, info);
4226
4227  nla_put_failure:
4228         err = -ENOBUFS;
4229  free_msg:
4230         nlmsg_free(msg);
4231         return err;
4232 }
4233
4234 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4235 {
4236         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4237         struct key_parse key;
4238         int err;
4239         struct net_device *dev = info->user_ptr[1];
4240
4241         err = nl80211_parse_key(info, &key);
4242         if (err)
4243                 return err;
4244
4245         if (key.idx < 0)
4246                 return -EINVAL;
4247
4248         /* Only support setting default key and
4249          * Extended Key ID action NL80211_KEY_SET_TX.
4250          */
4251         if (!key.def && !key.defmgmt && !key.defbeacon &&
4252             !(key.p.mode == NL80211_KEY_SET_TX))
4253                 return -EINVAL;
4254
4255         wdev_lock(dev->ieee80211_ptr);
4256
4257         if (key.def) {
4258                 if (!rdev->ops->set_default_key) {
4259                         err = -EOPNOTSUPP;
4260                         goto out;
4261                 }
4262
4263                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4264                 if (err)
4265                         goto out;
4266
4267                 err = rdev_set_default_key(rdev, dev, key.idx,
4268                                                  key.def_uni, key.def_multi);
4269
4270                 if (err)
4271                         goto out;
4272
4273 #ifdef CONFIG_CFG80211_WEXT
4274                 dev->ieee80211_ptr->wext.default_key = key.idx;
4275 #endif
4276         } else if (key.defmgmt) {
4277                 if (key.def_uni || !key.def_multi) {
4278                         err = -EINVAL;
4279                         goto out;
4280                 }
4281
4282                 if (!rdev->ops->set_default_mgmt_key) {
4283                         err = -EOPNOTSUPP;
4284                         goto out;
4285                 }
4286
4287                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4288                 if (err)
4289                         goto out;
4290
4291                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4292                 if (err)
4293                         goto out;
4294
4295 #ifdef CONFIG_CFG80211_WEXT
4296                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4297 #endif
4298         } else if (key.defbeacon) {
4299                 if (key.def_uni || !key.def_multi) {
4300                         err = -EINVAL;
4301                         goto out;
4302                 }
4303
4304                 if (!rdev->ops->set_default_beacon_key) {
4305                         err = -EOPNOTSUPP;
4306                         goto out;
4307                 }
4308
4309                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4310                 if (err)
4311                         goto out;
4312
4313                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4314                 if (err)
4315                         goto out;
4316         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4317                    wiphy_ext_feature_isset(&rdev->wiphy,
4318                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4319                 u8 *mac_addr = NULL;
4320
4321                 if (info->attrs[NL80211_ATTR_MAC])
4322                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4323
4324                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4325                         err = -EINVAL;
4326                         goto out;
4327                 }
4328
4329                 err = rdev_add_key(rdev, dev, key.idx,
4330                                    NL80211_KEYTYPE_PAIRWISE,
4331                                    mac_addr, &key.p);
4332         } else {
4333                 err = -EINVAL;
4334         }
4335  out:
4336         wdev_unlock(dev->ieee80211_ptr);
4337
4338         return err;
4339 }
4340
4341 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4342 {
4343         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4344         int err;
4345         struct net_device *dev = info->user_ptr[1];
4346         struct key_parse key;
4347         const u8 *mac_addr = NULL;
4348
4349         err = nl80211_parse_key(info, &key);
4350         if (err)
4351                 return err;
4352
4353         if (!key.p.key) {
4354                 GENL_SET_ERR_MSG(info, "no key");
4355                 return -EINVAL;
4356         }
4357
4358         if (info->attrs[NL80211_ATTR_MAC])
4359                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4360
4361         if (key.type == -1) {
4362                 if (mac_addr)
4363                         key.type = NL80211_KEYTYPE_PAIRWISE;
4364                 else
4365                         key.type = NL80211_KEYTYPE_GROUP;
4366         }
4367
4368         /* for now */
4369         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4370             key.type != NL80211_KEYTYPE_GROUP) {
4371                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4372                 return -EINVAL;
4373         }
4374
4375         if (key.type == NL80211_KEYTYPE_GROUP &&
4376             info->attrs[NL80211_ATTR_VLAN_ID])
4377                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4378
4379         if (!rdev->ops->add_key)
4380                 return -EOPNOTSUPP;
4381
4382         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4383                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4384                                            mac_addr)) {
4385                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4386                 return -EINVAL;
4387         }
4388
4389         wdev_lock(dev->ieee80211_ptr);
4390         err = nl80211_key_allowed(dev->ieee80211_ptr);
4391         if (err)
4392                 GENL_SET_ERR_MSG(info, "key not allowed");
4393         if (!err) {
4394                 err = rdev_add_key(rdev, dev, key.idx,
4395                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4396                                     mac_addr, &key.p);
4397                 if (err)
4398                         GENL_SET_ERR_MSG(info, "key addition failed");
4399         }
4400         wdev_unlock(dev->ieee80211_ptr);
4401
4402         return err;
4403 }
4404
4405 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4406 {
4407         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4408         int err;
4409         struct net_device *dev = info->user_ptr[1];
4410         u8 *mac_addr = NULL;
4411         struct key_parse key;
4412
4413         err = nl80211_parse_key(info, &key);
4414         if (err)
4415                 return err;
4416
4417         if (info->attrs[NL80211_ATTR_MAC])
4418                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4419
4420         if (key.type == -1) {
4421                 if (mac_addr)
4422                         key.type = NL80211_KEYTYPE_PAIRWISE;
4423                 else
4424                         key.type = NL80211_KEYTYPE_GROUP;
4425         }
4426
4427         /* for now */
4428         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4429             key.type != NL80211_KEYTYPE_GROUP)
4430                 return -EINVAL;
4431
4432         if (!cfg80211_valid_key_idx(rdev, key.idx,
4433                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4434                 return -EINVAL;
4435
4436         if (!rdev->ops->del_key)
4437                 return -EOPNOTSUPP;
4438
4439         wdev_lock(dev->ieee80211_ptr);
4440         err = nl80211_key_allowed(dev->ieee80211_ptr);
4441
4442         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4443             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4444                 err = -ENOENT;
4445
4446         if (!err)
4447                 err = rdev_del_key(rdev, dev, key.idx,
4448                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4449                                    mac_addr);
4450
4451 #ifdef CONFIG_CFG80211_WEXT
4452         if (!err) {
4453                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4454                         dev->ieee80211_ptr->wext.default_key = -1;
4455                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4456                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4457         }
4458 #endif
4459         wdev_unlock(dev->ieee80211_ptr);
4460
4461         return err;
4462 }
4463
4464 /* This function returns an error or the number of nested attributes */
4465 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4466 {
4467         struct nlattr *attr;
4468         int n_entries = 0, tmp;
4469
4470         nla_for_each_nested(attr, nl_attr, tmp) {
4471                 if (nla_len(attr) != ETH_ALEN)
4472                         return -EINVAL;
4473
4474                 n_entries++;
4475         }
4476
4477         return n_entries;
4478 }
4479
4480 /*
4481  * This function parses ACL information and allocates memory for ACL data.
4482  * On successful return, the calling function is responsible to free the
4483  * ACL buffer returned by this function.
4484  */
4485 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4486                                                 struct genl_info *info)
4487 {
4488         enum nl80211_acl_policy acl_policy;
4489         struct nlattr *attr;
4490         struct cfg80211_acl_data *acl;
4491         int i = 0, n_entries, tmp;
4492
4493         if (!wiphy->max_acl_mac_addrs)
4494                 return ERR_PTR(-EOPNOTSUPP);
4495
4496         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4497                 return ERR_PTR(-EINVAL);
4498
4499         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4500         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4501             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4502                 return ERR_PTR(-EINVAL);
4503
4504         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4505                 return ERR_PTR(-EINVAL);
4506
4507         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4508         if (n_entries < 0)
4509                 return ERR_PTR(n_entries);
4510
4511         if (n_entries > wiphy->max_acl_mac_addrs)
4512                 return ERR_PTR(-ENOTSUPP);
4513
4514         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4515         if (!acl)
4516                 return ERR_PTR(-ENOMEM);
4517
4518         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4519                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4520                 i++;
4521         }
4522
4523         acl->n_acl_entries = n_entries;
4524         acl->acl_policy = acl_policy;
4525
4526         return acl;
4527 }
4528
4529 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4530 {
4531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4532         struct net_device *dev = info->user_ptr[1];
4533         struct cfg80211_acl_data *acl;
4534         int err;
4535
4536         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4537             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4538                 return -EOPNOTSUPP;
4539
4540         if (!dev->ieee80211_ptr->beacon_interval)
4541                 return -EINVAL;
4542
4543         acl = parse_acl_data(&rdev->wiphy, info);
4544         if (IS_ERR(acl))
4545                 return PTR_ERR(acl);
4546
4547         err = rdev_set_mac_acl(rdev, dev, acl);
4548
4549         kfree(acl);
4550
4551         return err;
4552 }
4553
4554 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4555                            u8 *rates, u8 rates_len)
4556 {
4557         u8 i;
4558         u32 mask = 0;
4559
4560         for (i = 0; i < rates_len; i++) {
4561                 int rate = (rates[i] & 0x7f) * 5;
4562                 int ridx;
4563
4564                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4565                         struct ieee80211_rate *srate =
4566                                 &sband->bitrates[ridx];
4567                         if (rate == srate->bitrate) {
4568                                 mask |= 1 << ridx;
4569                                 break;
4570                         }
4571                 }
4572                 if (ridx == sband->n_bitrates)
4573                         return 0; /* rate not found */
4574         }
4575
4576         return mask;
4577 }
4578
4579 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4580                                u8 *rates, u8 rates_len,
4581                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4582 {
4583         u8 i;
4584
4585         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4586
4587         for (i = 0; i < rates_len; i++) {
4588                 int ridx, rbit;
4589
4590                 ridx = rates[i] / 8;
4591                 rbit = BIT(rates[i] % 8);
4592
4593                 /* check validity */
4594                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4595                         return false;
4596
4597                 /* check availability */
4598                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4599                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4600                         mcs[ridx] |= rbit;
4601                 else
4602                         return false;
4603         }
4604
4605         return true;
4606 }
4607
4608 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4609 {
4610         u16 mcs_mask = 0;
4611
4612         switch (vht_mcs_map) {
4613         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4614                 break;
4615         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4616                 mcs_mask = 0x00FF;
4617                 break;
4618         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4619                 mcs_mask = 0x01FF;
4620                 break;
4621         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4622                 mcs_mask = 0x03FF;
4623                 break;
4624         default:
4625                 break;
4626         }
4627
4628         return mcs_mask;
4629 }
4630
4631 static void vht_build_mcs_mask(u16 vht_mcs_map,
4632                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4633 {
4634         u8 nss;
4635
4636         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4637                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4638                 vht_mcs_map >>= 2;
4639         }
4640 }
4641
4642 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4643                              struct nl80211_txrate_vht *txrate,
4644                              u16 mcs[NL80211_VHT_NSS_MAX])
4645 {
4646         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4647         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4648         u8 i;
4649
4650         if (!sband->vht_cap.vht_supported)
4651                 return false;
4652
4653         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4654
4655         /* Build vht_mcs_mask from VHT capabilities */
4656         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4657
4658         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4659                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4660                         mcs[i] = txrate->mcs[i];
4661                 else
4662                         return false;
4663         }
4664
4665         return true;
4666 }
4667
4668 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4669 {
4670         switch (he_mcs_map) {
4671         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4672                 return 0;
4673         case IEEE80211_HE_MCS_SUPPORT_0_7:
4674                 return 0x00FF;
4675         case IEEE80211_HE_MCS_SUPPORT_0_9:
4676                 return 0x03FF;
4677         case IEEE80211_HE_MCS_SUPPORT_0_11:
4678                 return 0xFFF;
4679         default:
4680                 break;
4681         }
4682         return 0;
4683 }
4684
4685 static void he_build_mcs_mask(u16 he_mcs_map,
4686                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4687 {
4688         u8 nss;
4689
4690         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4691                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4692                 he_mcs_map >>= 2;
4693         }
4694 }
4695
4696 static u16 he_get_txmcsmap(struct genl_info *info,
4697                            const struct ieee80211_sta_he_cap *he_cap)
4698 {
4699         struct net_device *dev = info->user_ptr[1];
4700         struct wireless_dev *wdev = dev->ieee80211_ptr;
4701         __le16  tx_mcs;
4702
4703         switch (wdev->chandef.width) {
4704         case NL80211_CHAN_WIDTH_80P80:
4705                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4706                 break;
4707         case NL80211_CHAN_WIDTH_160:
4708                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4709                 break;
4710         default:
4711                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4712                 break;
4713         }
4714         return le16_to_cpu(tx_mcs);
4715 }
4716
4717 static bool he_set_mcs_mask(struct genl_info *info,
4718                             struct wireless_dev *wdev,
4719                             struct ieee80211_supported_band *sband,
4720                             struct nl80211_txrate_he *txrate,
4721                             u16 mcs[NL80211_HE_NSS_MAX])
4722 {
4723         const struct ieee80211_sta_he_cap *he_cap;
4724         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4725         u16 tx_mcs_map = 0;
4726         u8 i;
4727
4728         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4729         if (!he_cap)
4730                 return false;
4731
4732         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4733
4734         tx_mcs_map = he_get_txmcsmap(info, he_cap);
4735
4736         /* Build he_mcs_mask from HE capabilities */
4737         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4738
4739         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4740                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4741                         mcs[i] = txrate->mcs[i];
4742                 else
4743                         return false;
4744         }
4745
4746         return true;
4747 }
4748
4749 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4750                                          struct nlattr *attrs[],
4751                                          enum nl80211_attrs attr,
4752                                          struct cfg80211_bitrate_mask *mask,
4753                                          struct net_device *dev,
4754                                          bool default_all_enabled)
4755 {
4756         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4757         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4758         struct wireless_dev *wdev = dev->ieee80211_ptr;
4759         int rem, i;
4760         struct nlattr *tx_rates;
4761         struct ieee80211_supported_band *sband;
4762         u16 vht_tx_mcs_map, he_tx_mcs_map;
4763
4764         memset(mask, 0, sizeof(*mask));
4765         /* Default to all rates enabled */
4766         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4767                 const struct ieee80211_sta_he_cap *he_cap;
4768
4769                 if (!default_all_enabled)
4770                         break;
4771
4772                 sband = rdev->wiphy.bands[i];
4773
4774                 if (!sband)
4775                         continue;
4776
4777                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4778                 memcpy(mask->control[i].ht_mcs,
4779                        sband->ht_cap.mcs.rx_mask,
4780                        sizeof(mask->control[i].ht_mcs));
4781
4782                 if (!sband->vht_cap.vht_supported)
4783                         continue;
4784
4785                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4786                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4787
4788                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4789                 if (!he_cap)
4790                         continue;
4791
4792                 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4793                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4794
4795                 mask->control[i].he_gi = 0xFF;
4796                 mask->control[i].he_ltf = 0xFF;
4797         }
4798
4799         /* if no rates are given set it back to the defaults */
4800         if (!attrs[attr])
4801                 goto out;
4802
4803         /* The nested attribute uses enum nl80211_band as the index. This maps
4804          * directly to the enum nl80211_band values used in cfg80211.
4805          */
4806         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4807         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4808                 enum nl80211_band band = nla_type(tx_rates);
4809                 int err;
4810
4811                 if (band < 0 || band >= NUM_NL80211_BANDS)
4812                         return -EINVAL;
4813                 sband = rdev->wiphy.bands[band];
4814                 if (sband == NULL)
4815                         return -EINVAL;
4816                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4817                                                   tx_rates,
4818                                                   nl80211_txattr_policy,
4819                                                   info->extack);
4820                 if (err)
4821                         return err;
4822                 if (tb[NL80211_TXRATE_LEGACY]) {
4823                         mask->control[band].legacy = rateset_to_mask(
4824                                 sband,
4825                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4826                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4827                         if ((mask->control[band].legacy == 0) &&
4828                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4829                                 return -EINVAL;
4830                 }
4831                 if (tb[NL80211_TXRATE_HT]) {
4832                         if (!ht_rateset_to_mask(
4833                                         sband,
4834                                         nla_data(tb[NL80211_TXRATE_HT]),
4835                                         nla_len(tb[NL80211_TXRATE_HT]),
4836                                         mask->control[band].ht_mcs))
4837                                 return -EINVAL;
4838                 }
4839
4840                 if (tb[NL80211_TXRATE_VHT]) {
4841                         if (!vht_set_mcs_mask(
4842                                         sband,
4843                                         nla_data(tb[NL80211_TXRATE_VHT]),
4844                                         mask->control[band].vht_mcs))
4845                                 return -EINVAL;
4846                 }
4847
4848                 if (tb[NL80211_TXRATE_GI]) {
4849                         mask->control[band].gi =
4850                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4851                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4852                                 return -EINVAL;
4853                 }
4854                 if (tb[NL80211_TXRATE_HE] &&
4855                     !he_set_mcs_mask(info, wdev, sband,
4856                                      nla_data(tb[NL80211_TXRATE_HE]),
4857                                      mask->control[band].he_mcs))
4858                         return -EINVAL;
4859
4860                 if (tb[NL80211_TXRATE_HE_GI])
4861                         mask->control[band].he_gi =
4862                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4863                 if (tb[NL80211_TXRATE_HE_LTF])
4864                         mask->control[band].he_ltf =
4865                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4866
4867                 if (mask->control[band].legacy == 0) {
4868                         /* don't allow empty legacy rates if HT, VHT or HE
4869                          * are not even supported.
4870                          */
4871                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4872                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4873                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4874                                 return -EINVAL;
4875
4876                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4877                                 if (mask->control[band].ht_mcs[i])
4878                                         goto out;
4879
4880                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4881                                 if (mask->control[band].vht_mcs[i])
4882                                         goto out;
4883
4884                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4885                                 if (mask->control[band].he_mcs[i])
4886                                         goto out;
4887
4888                         /* legacy and mcs rates may not be both empty */
4889                         return -EINVAL;
4890                 }
4891         }
4892
4893 out:
4894         return 0;
4895 }
4896
4897 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4898                                    enum nl80211_band band,
4899                                    struct cfg80211_bitrate_mask *beacon_rate)
4900 {
4901         u32 count_ht, count_vht, count_he, i;
4902         u32 rate = beacon_rate->control[band].legacy;
4903
4904         /* Allow only one rate */
4905         if (hweight32(rate) > 1)
4906                 return -EINVAL;
4907
4908         count_ht = 0;
4909         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4910                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4911                         return -EINVAL;
4912                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4913                         count_ht++;
4914                         if (count_ht > 1)
4915                                 return -EINVAL;
4916                 }
4917                 if (count_ht && rate)
4918                         return -EINVAL;
4919         }
4920
4921         count_vht = 0;
4922         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4923                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4924                         return -EINVAL;
4925                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4926                         count_vht++;
4927                         if (count_vht > 1)
4928                                 return -EINVAL;
4929                 }
4930                 if (count_vht && rate)
4931                         return -EINVAL;
4932         }
4933
4934         count_he = 0;
4935         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4936                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
4937                         return -EINVAL;
4938                 } else if (beacon_rate->control[band].he_mcs[i]) {
4939                         count_he++;
4940                         if (count_he > 1)
4941                                 return -EINVAL;
4942                 }
4943                 if (count_he && rate)
4944                         return -EINVAL;
4945         }
4946
4947         if ((count_ht && count_vht && count_he) ||
4948             (!rate && !count_ht && !count_vht && !count_he))
4949                 return -EINVAL;
4950
4951         if (rate &&
4952             !wiphy_ext_feature_isset(&rdev->wiphy,
4953                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4954                 return -EINVAL;
4955         if (count_ht &&
4956             !wiphy_ext_feature_isset(&rdev->wiphy,
4957                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4958                 return -EINVAL;
4959         if (count_vht &&
4960             !wiphy_ext_feature_isset(&rdev->wiphy,
4961                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4962                 return -EINVAL;
4963         if (count_he &&
4964             !wiphy_ext_feature_isset(&rdev->wiphy,
4965                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
4966                 return -EINVAL;
4967
4968         return 0;
4969 }
4970
4971 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4972                                 struct nlattr *attrs[],
4973                                 struct cfg80211_beacon_data *bcn)
4974 {
4975         bool haveinfo = false;
4976         int err;
4977
4978         memset(bcn, 0, sizeof(*bcn));
4979
4980         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4981                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4982                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4983                 if (!bcn->head_len)
4984                         return -EINVAL;
4985                 haveinfo = true;
4986         }
4987
4988         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4989                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4990                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4991                 haveinfo = true;
4992         }
4993
4994         if (!haveinfo)
4995                 return -EINVAL;
4996
4997         if (attrs[NL80211_ATTR_IE]) {
4998                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4999                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
5000         }
5001
5002         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
5003                 bcn->proberesp_ies =
5004                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5005                 bcn->proberesp_ies_len =
5006                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
5007         }
5008
5009         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
5010                 bcn->assocresp_ies =
5011                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5012                 bcn->assocresp_ies_len =
5013                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
5014         }
5015
5016         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5017                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5018                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5019         }
5020
5021         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5022                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5023
5024                 err = nla_parse_nested_deprecated(tb,
5025                                                   NL80211_FTM_RESP_ATTR_MAX,
5026                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5027                                                   NULL, NULL);
5028                 if (err)
5029                         return err;
5030
5031                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5032                     wiphy_ext_feature_isset(&rdev->wiphy,
5033                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5034                         bcn->ftm_responder = 1;
5035                 else
5036                         return -EOPNOTSUPP;
5037
5038                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5039                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5040                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5041                 }
5042
5043                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5044                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5045                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5046                 }
5047         } else {
5048                 bcn->ftm_responder = -1;
5049         }
5050
5051         return 0;
5052 }
5053
5054 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5055                                     struct ieee80211_he_obss_pd *he_obss_pd)
5056 {
5057         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5058         int err;
5059
5060         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5061                                he_obss_pd_policy, NULL);
5062         if (err)
5063                 return err;
5064
5065         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5066                 return -EINVAL;
5067
5068         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5069
5070         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5071                 he_obss_pd->min_offset =
5072                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5073         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5074                 he_obss_pd->max_offset =
5075                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5076         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5077                 he_obss_pd->non_srg_max_offset =
5078                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5079
5080         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5081                 return -EINVAL;
5082
5083         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5084                 memcpy(he_obss_pd->bss_color_bitmap,
5085                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5086                        sizeof(he_obss_pd->bss_color_bitmap));
5087
5088         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5089                 memcpy(he_obss_pd->partial_bssid_bitmap,
5090                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5091                        sizeof(he_obss_pd->partial_bssid_bitmap));
5092
5093         he_obss_pd->enable = true;
5094
5095         return 0;
5096 }
5097
5098 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5099                                       struct cfg80211_he_bss_color *he_bss_color)
5100 {
5101         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5102         int err;
5103
5104         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5105                                he_bss_color_policy, NULL);
5106         if (err)
5107                 return err;
5108
5109         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5110                 return -EINVAL;
5111
5112         he_bss_color->color =
5113                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5114         he_bss_color->enabled =
5115                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5116         he_bss_color->partial =
5117                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5118
5119         return 0;
5120 }
5121
5122 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5123                                         struct nlattr *attrs,
5124                                         struct cfg80211_ap_settings *params)
5125 {
5126         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5127         int ret;
5128         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5129
5130         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5131                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5132                 return -EINVAL;
5133
5134         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5135                                NULL, NULL);
5136         if (ret)
5137                 return ret;
5138
5139         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5140             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5141             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5142                 return -EINVAL;
5143
5144         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5145         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5146         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5147         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5148
5149         return 0;
5150 }
5151
5152 static int
5153 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5154                                      struct nlattr *attrs,
5155                                      struct cfg80211_ap_settings *params)
5156 {
5157         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5158         int ret;
5159         struct cfg80211_unsol_bcast_probe_resp *presp =
5160                                         &params->unsol_bcast_probe_resp;
5161
5162         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5163                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5164                 return -EINVAL;
5165
5166         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5167                                attrs, NULL, NULL);
5168         if (ret)
5169                 return ret;
5170
5171         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5172             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5173                 return -EINVAL;
5174
5175         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5176         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5177         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5178         return 0;
5179 }
5180
5181 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5182                                             const u8 *rates)
5183 {
5184         int i;
5185
5186         if (!rates)
5187                 return;
5188
5189         for (i = 0; i < rates[1]; i++) {
5190                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5191                         params->ht_required = true;
5192                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5193                         params->vht_required = true;
5194                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5195                         params->he_required = true;
5196                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5197                         params->sae_h2e_required = true;
5198         }
5199 }
5200
5201 /*
5202  * Since the nl80211 API didn't include, from the beginning, attributes about
5203  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5204  * benefit of drivers that rebuild IEs in the firmware.
5205  */
5206 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5207 {
5208         const struct cfg80211_beacon_data *bcn = &params->beacon;
5209         size_t ies_len = bcn->tail_len;
5210         const u8 *ies = bcn->tail;
5211         const u8 *rates;
5212         const u8 *cap;
5213
5214         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5215         nl80211_check_ap_rate_selectors(params, rates);
5216
5217         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5218         nl80211_check_ap_rate_selectors(params, rates);
5219
5220         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5221         if (cap && cap[1] >= sizeof(*params->ht_cap))
5222                 params->ht_cap = (void *)(cap + 2);
5223         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5224         if (cap && cap[1] >= sizeof(*params->vht_cap))
5225                 params->vht_cap = (void *)(cap + 2);
5226         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5227         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5228                 params->he_cap = (void *)(cap + 3);
5229         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5230         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5231                 params->he_oper = (void *)(cap + 3);
5232 }
5233
5234 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5235                                    struct cfg80211_ap_settings *params)
5236 {
5237         struct wireless_dev *wdev;
5238         bool ret = false;
5239
5240         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5241                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5242                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5243                         continue;
5244
5245                 if (!wdev->preset_chandef.chan)
5246                         continue;
5247
5248                 params->chandef = wdev->preset_chandef;
5249                 ret = true;
5250                 break;
5251         }
5252
5253         return ret;
5254 }
5255
5256 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5257                                     enum nl80211_auth_type auth_type,
5258                                     enum nl80211_commands cmd)
5259 {
5260         if (auth_type > NL80211_AUTHTYPE_MAX)
5261                 return false;
5262
5263         switch (cmd) {
5264         case NL80211_CMD_AUTHENTICATE:
5265                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5266                     auth_type == NL80211_AUTHTYPE_SAE)
5267                         return false;
5268                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5269                                              NL80211_EXT_FEATURE_FILS_STA) &&
5270                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5271                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5272                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5273                         return false;
5274                 return true;
5275         case NL80211_CMD_CONNECT:
5276                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5277                     !wiphy_ext_feature_isset(&rdev->wiphy,
5278                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5279                     auth_type == NL80211_AUTHTYPE_SAE)
5280                         return false;
5281
5282                 /* FILS with SK PFS or PK not supported yet */
5283                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5284                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5285                         return false;
5286                 if (!wiphy_ext_feature_isset(
5287                             &rdev->wiphy,
5288                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5289                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5290                         return false;
5291                 return true;
5292         case NL80211_CMD_START_AP:
5293                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5294                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5295                     auth_type == NL80211_AUTHTYPE_SAE)
5296                         return false;
5297                 /* FILS not supported yet */
5298                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5299                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5300                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5301                         return false;
5302                 return true;
5303         default:
5304                 return false;
5305         }
5306 }
5307
5308 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5309 {
5310         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5311         struct net_device *dev = info->user_ptr[1];
5312         struct wireless_dev *wdev = dev->ieee80211_ptr;
5313         struct cfg80211_ap_settings params;
5314         int err;
5315
5316         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5317             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5318                 return -EOPNOTSUPP;
5319
5320         if (!rdev->ops->start_ap)
5321                 return -EOPNOTSUPP;
5322
5323         if (wdev->beacon_interval)
5324                 return -EALREADY;
5325
5326         memset(&params, 0, sizeof(params));
5327
5328         /* these are required for START_AP */
5329         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5330             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5331             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5332                 return -EINVAL;
5333
5334         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
5335         if (err)
5336                 return err;
5337
5338         params.beacon_interval =
5339                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5340         params.dtim_period =
5341                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5342
5343         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5344                                            params.beacon_interval);
5345         if (err)
5346                 return err;
5347
5348         /*
5349          * In theory, some of these attributes should be required here
5350          * but since they were not used when the command was originally
5351          * added, keep them optional for old user space programs to let
5352          * them continue to work with drivers that do not need the
5353          * additional information -- drivers must check!
5354          */
5355         if (info->attrs[NL80211_ATTR_SSID]) {
5356                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5357                 params.ssid_len =
5358                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5359                 if (params.ssid_len == 0)
5360                         return -EINVAL;
5361         }
5362
5363         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5364                 params.hidden_ssid = nla_get_u32(
5365                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5366
5367         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5368
5369         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5370                 params.auth_type = nla_get_u32(
5371                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5372                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5373                                              NL80211_CMD_START_AP))
5374                         return -EINVAL;
5375         } else
5376                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5377
5378         err = nl80211_crypto_settings(rdev, info, &params.crypto,
5379                                       NL80211_MAX_NR_CIPHER_SUITES);
5380         if (err)
5381                 return err;
5382
5383         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5384                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5385                         return -EOPNOTSUPP;
5386                 params.inactivity_timeout = nla_get_u16(
5387                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5388         }
5389
5390         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5391                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5392                         return -EINVAL;
5393                 params.p2p_ctwindow =
5394                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5395                 if (params.p2p_ctwindow != 0 &&
5396                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5397                         return -EINVAL;
5398         }
5399
5400         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5401                 u8 tmp;
5402
5403                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5404                         return -EINVAL;
5405                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5406                 params.p2p_opp_ps = tmp;
5407                 if (params.p2p_opp_ps != 0 &&
5408                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5409                         return -EINVAL;
5410         }
5411
5412         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5413                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5414                 if (err)
5415                         return err;
5416         } else if (wdev->preset_chandef.chan) {
5417                 params.chandef = wdev->preset_chandef;
5418         } else if (!nl80211_get_ap_channel(rdev, &params))
5419                 return -EINVAL;
5420
5421         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
5422                                            wdev->iftype))
5423                 return -EINVAL;
5424
5425         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5426                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5427                                                     NL80211_ATTR_TX_RATES,
5428                                                     &params.beacon_rate,
5429                                                     dev, false);
5430                 if (err)
5431                         return err;
5432
5433                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5434                                               &params.beacon_rate);
5435                 if (err)
5436                         return err;
5437         }
5438
5439         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5440                 params.smps_mode =
5441                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5442                 switch (params.smps_mode) {
5443                 case NL80211_SMPS_OFF:
5444                         break;
5445                 case NL80211_SMPS_STATIC:
5446                         if (!(rdev->wiphy.features &
5447                               NL80211_FEATURE_STATIC_SMPS))
5448                                 return -EINVAL;
5449                         break;
5450                 case NL80211_SMPS_DYNAMIC:
5451                         if (!(rdev->wiphy.features &
5452                               NL80211_FEATURE_DYNAMIC_SMPS))
5453                                 return -EINVAL;
5454                         break;
5455                 default:
5456                         return -EINVAL;
5457                 }
5458         } else {
5459                 params.smps_mode = NL80211_SMPS_OFF;
5460         }
5461
5462         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5463         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5464                 return -EOPNOTSUPP;
5465
5466         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5467                 params.acl = parse_acl_data(&rdev->wiphy, info);
5468                 if (IS_ERR(params.acl))
5469                         return PTR_ERR(params.acl);
5470         }
5471
5472         params.twt_responder =
5473                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5474
5475         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5476                 err = nl80211_parse_he_obss_pd(
5477                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5478                                         &params.he_obss_pd);
5479                 if (err)
5480                         goto out;
5481         }
5482
5483         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5484                 err = nl80211_parse_he_bss_color(
5485                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5486                                         &params.he_bss_color);
5487                 if (err)
5488                         goto out;
5489         }
5490
5491         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5492                 err = nl80211_parse_fils_discovery(rdev,
5493                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5494                                                    &params);
5495                 if (err)
5496                         goto out;
5497         }
5498
5499         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5500                 err = nl80211_parse_unsol_bcast_probe_resp(
5501                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5502                         &params);
5503                 if (err)
5504                         goto out;
5505         }
5506
5507         nl80211_calculate_ap_params(&params);
5508
5509         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5510                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5511
5512         wdev_lock(wdev);
5513         err = rdev_start_ap(rdev, dev, &params);
5514         if (!err) {
5515                 wdev->preset_chandef = params.chandef;
5516                 wdev->beacon_interval = params.beacon_interval;
5517                 wdev->chandef = params.chandef;
5518                 wdev->ssid_len = params.ssid_len;
5519                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5520
5521                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5522                         wdev->conn_owner_nlportid = info->snd_portid;
5523         }
5524         wdev_unlock(wdev);
5525
5526 out:
5527         kfree(params.acl);
5528
5529         return err;
5530 }
5531
5532 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5533 {
5534         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5535         struct net_device *dev = info->user_ptr[1];
5536         struct wireless_dev *wdev = dev->ieee80211_ptr;
5537         struct cfg80211_beacon_data params;
5538         int err;
5539
5540         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5541             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5542                 return -EOPNOTSUPP;
5543
5544         if (!rdev->ops->change_beacon)
5545                 return -EOPNOTSUPP;
5546
5547         if (!wdev->beacon_interval)
5548                 return -EINVAL;
5549
5550         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5551         if (err)
5552                 return err;
5553
5554         wdev_lock(wdev);
5555         err = rdev_change_beacon(rdev, dev, &params);
5556         wdev_unlock(wdev);
5557
5558         return err;
5559 }
5560
5561 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5562 {
5563         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5564         struct net_device *dev = info->user_ptr[1];
5565
5566         return cfg80211_stop_ap(rdev, dev, false);
5567 }
5568
5569 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5570         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5571         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5572         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5573         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5574         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5575         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5576 };
5577
5578 static int parse_station_flags(struct genl_info *info,
5579                                enum nl80211_iftype iftype,
5580                                struct station_parameters *params)
5581 {
5582         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5583         struct nlattr *nla;
5584         int flag;
5585
5586         /*
5587          * Try parsing the new attribute first so userspace
5588          * can specify both for older kernels.
5589          */
5590         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5591         if (nla) {
5592                 struct nl80211_sta_flag_update *sta_flags;
5593
5594                 sta_flags = nla_data(nla);
5595                 params->sta_flags_mask = sta_flags->mask;
5596                 params->sta_flags_set = sta_flags->set;
5597                 params->sta_flags_set &= params->sta_flags_mask;
5598                 if ((params->sta_flags_mask |
5599                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5600                         return -EINVAL;
5601                 return 0;
5602         }
5603
5604         /* if present, parse the old attribute */
5605
5606         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5607         if (!nla)
5608                 return 0;
5609
5610         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5611                 return -EINVAL;
5612
5613         /*
5614          * Only allow certain flags for interface types so that
5615          * other attributes are silently ignored. Remember that
5616          * this is backward compatibility code with old userspace
5617          * and shouldn't be hit in other cases anyway.
5618          */
5619         switch (iftype) {
5620         case NL80211_IFTYPE_AP:
5621         case NL80211_IFTYPE_AP_VLAN:
5622         case NL80211_IFTYPE_P2P_GO:
5623                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5624                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5625                                          BIT(NL80211_STA_FLAG_WME) |
5626                                          BIT(NL80211_STA_FLAG_MFP);
5627                 break;
5628         case NL80211_IFTYPE_P2P_CLIENT:
5629         case NL80211_IFTYPE_STATION:
5630                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5631                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5632                 break;
5633         case NL80211_IFTYPE_MESH_POINT:
5634                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5635                                          BIT(NL80211_STA_FLAG_MFP) |
5636                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5637                 break;
5638         default:
5639                 return -EINVAL;
5640         }
5641
5642         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5643                 if (flags[flag]) {
5644                         params->sta_flags_set |= (1<<flag);
5645
5646                         /* no longer support new API additions in old API */
5647                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5648                                 return -EINVAL;
5649                 }
5650         }
5651
5652         return 0;
5653 }
5654
5655 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5656 {
5657         struct nlattr *rate;
5658         u32 bitrate;
5659         u16 bitrate_compat;
5660         enum nl80211_rate_info rate_flg;
5661
5662         rate = nla_nest_start_noflag(msg, attr);
5663         if (!rate)
5664                 return false;
5665
5666         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5667         bitrate = cfg80211_calculate_bitrate(info);
5668         /* report 16-bit bitrate only if we can */
5669         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5670         if (bitrate > 0 &&
5671             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5672                 return false;
5673         if (bitrate_compat > 0 &&
5674             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5675                 return false;
5676
5677         switch (info->bw) {
5678         case RATE_INFO_BW_5:
5679                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5680                 break;
5681         case RATE_INFO_BW_10:
5682                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5683                 break;
5684         default:
5685                 WARN_ON(1);
5686                 fallthrough;
5687         case RATE_INFO_BW_20:
5688                 rate_flg = 0;
5689                 break;
5690         case RATE_INFO_BW_40:
5691                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5692                 break;
5693         case RATE_INFO_BW_80:
5694                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5695                 break;
5696         case RATE_INFO_BW_160:
5697                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5698                 break;
5699         case RATE_INFO_BW_HE_RU:
5700                 rate_flg = 0;
5701                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5702         }
5703
5704         if (rate_flg && nla_put_flag(msg, rate_flg))
5705                 return false;
5706
5707         if (info->flags & RATE_INFO_FLAGS_MCS) {
5708                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5709                         return false;
5710                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5711                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5712                         return false;
5713         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5714                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5715                         return false;
5716                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5717                         return false;
5718                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5719                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5720                         return false;
5721         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5722                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5723                         return false;
5724                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5725                         return false;
5726                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5727                         return false;
5728                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5729                         return false;
5730                 if (info->bw == RATE_INFO_BW_HE_RU &&
5731                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5732                                info->he_ru_alloc))
5733                         return false;
5734         }
5735
5736         nla_nest_end(msg, rate);
5737         return true;
5738 }
5739
5740 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5741                                int id)
5742 {
5743         void *attr;
5744         int i = 0;
5745
5746         if (!mask)
5747                 return true;
5748
5749         attr = nla_nest_start_noflag(msg, id);
5750         if (!attr)
5751                 return false;
5752
5753         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5754                 if (!(mask & BIT(i)))
5755                         continue;
5756
5757                 if (nla_put_u8(msg, i, signal[i]))
5758                         return false;
5759         }
5760
5761         nla_nest_end(msg, attr);
5762
5763         return true;
5764 }
5765
5766 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5767                                 u32 seq, int flags,
5768                                 struct cfg80211_registered_device *rdev,
5769                                 struct net_device *dev,
5770                                 const u8 *mac_addr, struct station_info *sinfo)
5771 {
5772         void *hdr;
5773         struct nlattr *sinfoattr, *bss_param;
5774
5775         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5776         if (!hdr) {
5777                 cfg80211_sinfo_release_content(sinfo);
5778                 return -1;
5779         }
5780
5781         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5782             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5783             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5784                 goto nla_put_failure;
5785
5786         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5787         if (!sinfoattr)
5788                 goto nla_put_failure;
5789
5790 #define PUT_SINFO(attr, memb, type) do {                                \
5791         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5792         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5793             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5794                              sinfo->memb))                              \
5795                 goto nla_put_failure;                                   \
5796         } while (0)
5797 #define PUT_SINFO_U64(attr, memb) do {                                  \
5798         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5799             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5800                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5801                 goto nla_put_failure;                                   \
5802         } while (0)
5803
5804         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5805         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5806         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5807
5808         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5809                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5810             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5811                         (u32)sinfo->rx_bytes))
5812                 goto nla_put_failure;
5813
5814         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5815                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5816             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5817                         (u32)sinfo->tx_bytes))
5818                 goto nla_put_failure;
5819
5820         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5821         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5822         PUT_SINFO(LLID, llid, u16);
5823         PUT_SINFO(PLID, plid, u16);
5824         PUT_SINFO(PLINK_STATE, plink_state, u8);
5825         PUT_SINFO_U64(RX_DURATION, rx_duration);
5826         PUT_SINFO_U64(TX_DURATION, tx_duration);
5827
5828         if (wiphy_ext_feature_isset(&rdev->wiphy,
5829                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5830                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5831
5832         switch (rdev->wiphy.signal_type) {
5833         case CFG80211_SIGNAL_TYPE_MBM:
5834                 PUT_SINFO(SIGNAL, signal, u8);
5835                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5836                 break;
5837         default:
5838                 break;
5839         }
5840         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5841                 if (!nl80211_put_signal(msg, sinfo->chains,
5842                                         sinfo->chain_signal,
5843                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5844                         goto nla_put_failure;
5845         }
5846         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5847                 if (!nl80211_put_signal(msg, sinfo->chains,
5848                                         sinfo->chain_signal_avg,
5849                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5850                         goto nla_put_failure;
5851         }
5852         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5853                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5854                                           NL80211_STA_INFO_TX_BITRATE))
5855                         goto nla_put_failure;
5856         }
5857         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5858                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5859                                           NL80211_STA_INFO_RX_BITRATE))
5860                         goto nla_put_failure;
5861         }
5862
5863         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5864         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5865         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5866         PUT_SINFO(TX_FAILED, tx_failed, u32);
5867         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5868         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5869         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5870         PUT_SINFO(LOCAL_PM, local_pm, u32);
5871         PUT_SINFO(PEER_PM, peer_pm, u32);
5872         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5873         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5874         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5875
5876         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5877                 bss_param = nla_nest_start_noflag(msg,
5878                                                   NL80211_STA_INFO_BSS_PARAM);
5879                 if (!bss_param)
5880                         goto nla_put_failure;
5881
5882                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5883                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5884                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5885                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5886                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5887                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5888                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5889                                sinfo->bss_param.dtim_period) ||
5890                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5891                                 sinfo->bss_param.beacon_interval))
5892                         goto nla_put_failure;
5893
5894                 nla_nest_end(msg, bss_param);
5895         }
5896         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5897             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5898                     sizeof(struct nl80211_sta_flag_update),
5899                     &sinfo->sta_flags))
5900                 goto nla_put_failure;
5901
5902         PUT_SINFO_U64(T_OFFSET, t_offset);
5903         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5904         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5905         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5906         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5907         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5908         if (wiphy_ext_feature_isset(&rdev->wiphy,
5909                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5910                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5911                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5912         }
5913
5914 #undef PUT_SINFO
5915 #undef PUT_SINFO_U64
5916
5917         if (sinfo->pertid) {
5918                 struct nlattr *tidsattr;
5919                 int tid;
5920
5921                 tidsattr = nla_nest_start_noflag(msg,
5922                                                  NL80211_STA_INFO_TID_STATS);
5923                 if (!tidsattr)
5924                         goto nla_put_failure;
5925
5926                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5927                         struct cfg80211_tid_stats *tidstats;
5928                         struct nlattr *tidattr;
5929
5930                         tidstats = &sinfo->pertid[tid];
5931
5932                         if (!tidstats->filled)
5933                                 continue;
5934
5935                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5936                         if (!tidattr)
5937                                 goto nla_put_failure;
5938
5939 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5940         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5941             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5942                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5943                 goto nla_put_failure;                                   \
5944         } while (0)
5945
5946                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5947                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5948                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5949                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5950
5951 #undef PUT_TIDVAL_U64
5952                         if ((tidstats->filled &
5953                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5954                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5955                                                    NL80211_TID_STATS_TXQ_STATS))
5956                                 goto nla_put_failure;
5957
5958                         nla_nest_end(msg, tidattr);
5959                 }
5960
5961                 nla_nest_end(msg, tidsattr);
5962         }
5963
5964         nla_nest_end(msg, sinfoattr);
5965
5966         if (sinfo->assoc_req_ies_len &&
5967             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5968                     sinfo->assoc_req_ies))
5969                 goto nla_put_failure;
5970
5971         cfg80211_sinfo_release_content(sinfo);
5972         genlmsg_end(msg, hdr);
5973         return 0;
5974
5975  nla_put_failure:
5976         cfg80211_sinfo_release_content(sinfo);
5977         genlmsg_cancel(msg, hdr);
5978         return -EMSGSIZE;
5979 }
5980
5981 static int nl80211_dump_station(struct sk_buff *skb,
5982                                 struct netlink_callback *cb)
5983 {
5984         struct station_info sinfo;
5985         struct cfg80211_registered_device *rdev;
5986         struct wireless_dev *wdev;
5987         u8 mac_addr[ETH_ALEN];
5988         int sta_idx = cb->args[2];
5989         int err;
5990
5991         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5992         if (err)
5993                 return err;
5994         /* nl80211_prepare_wdev_dump acquired it in the successful case */
5995         __acquire(&rdev->wiphy.mtx);
5996
5997         if (!wdev->netdev) {
5998                 err = -EINVAL;
5999                 goto out_err;
6000         }
6001
6002         if (!rdev->ops->dump_station) {
6003                 err = -EOPNOTSUPP;
6004                 goto out_err;
6005         }
6006
6007         while (1) {
6008                 memset(&sinfo, 0, sizeof(sinfo));
6009                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
6010                                         mac_addr, &sinfo);
6011                 if (err == -ENOENT)
6012                         break;
6013                 if (err)
6014                         goto out_err;
6015
6016                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6017                                 NETLINK_CB(cb->skb).portid,
6018                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6019                                 rdev, wdev->netdev, mac_addr,
6020                                 &sinfo) < 0)
6021                         goto out;
6022
6023                 sta_idx++;
6024         }
6025
6026  out:
6027         cb->args[2] = sta_idx;
6028         err = skb->len;
6029  out_err:
6030         wiphy_unlock(&rdev->wiphy);
6031
6032         return err;
6033 }
6034
6035 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6036 {
6037         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6038         struct net_device *dev = info->user_ptr[1];
6039         struct station_info sinfo;
6040         struct sk_buff *msg;
6041         u8 *mac_addr = NULL;
6042         int err;
6043
6044         memset(&sinfo, 0, sizeof(sinfo));
6045
6046         if (!info->attrs[NL80211_ATTR_MAC])
6047                 return -EINVAL;
6048
6049         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6050
6051         if (!rdev->ops->get_station)
6052                 return -EOPNOTSUPP;
6053
6054         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6055         if (err)
6056                 return err;
6057
6058         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6059         if (!msg) {
6060                 cfg80211_sinfo_release_content(&sinfo);
6061                 return -ENOMEM;
6062         }
6063
6064         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6065                                  info->snd_portid, info->snd_seq, 0,
6066                                  rdev, dev, mac_addr, &sinfo) < 0) {
6067                 nlmsg_free(msg);
6068                 return -ENOBUFS;
6069         }
6070
6071         return genlmsg_reply(msg, info);
6072 }
6073
6074 int cfg80211_check_station_change(struct wiphy *wiphy,
6075                                   struct station_parameters *params,
6076                                   enum cfg80211_station_type statype)
6077 {
6078         if (params->listen_interval != -1 &&
6079             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6080                 return -EINVAL;
6081
6082         if (params->support_p2p_ps != -1 &&
6083             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6084                 return -EINVAL;
6085
6086         if (params->aid &&
6087             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6088             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6089                 return -EINVAL;
6090
6091         /* When you run into this, adjust the code below for the new flag */
6092         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6093
6094         switch (statype) {
6095         case CFG80211_STA_MESH_PEER_KERNEL:
6096         case CFG80211_STA_MESH_PEER_USER:
6097                 /*
6098                  * No ignoring the TDLS flag here -- the userspace mesh
6099                  * code doesn't have the bug of including TDLS in the
6100                  * mask everywhere.
6101                  */
6102                 if (params->sta_flags_mask &
6103                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6104                                   BIT(NL80211_STA_FLAG_MFP) |
6105                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6106                         return -EINVAL;
6107                 break;
6108         case CFG80211_STA_TDLS_PEER_SETUP:
6109         case CFG80211_STA_TDLS_PEER_ACTIVE:
6110                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6111                         return -EINVAL;
6112                 /* ignore since it can't change */
6113                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6114                 break;
6115         default:
6116                 /* disallow mesh-specific things */
6117                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6118                         return -EINVAL;
6119                 if (params->local_pm)
6120                         return -EINVAL;
6121                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6122                         return -EINVAL;
6123         }
6124
6125         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6126             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6127                 /* TDLS can't be set, ... */
6128                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6129                         return -EINVAL;
6130                 /*
6131                  * ... but don't bother the driver with it. This works around
6132                  * a hostapd/wpa_supplicant issue -- it always includes the
6133                  * TLDS_PEER flag in the mask even for AP mode.
6134                  */
6135                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6136         }
6137
6138         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6139             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6140                 /* reject other things that can't change */
6141                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6142                         return -EINVAL;
6143                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6144                         return -EINVAL;
6145                 if (params->supported_rates)
6146                         return -EINVAL;
6147                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
6148                     params->he_capa)
6149                         return -EINVAL;
6150         }
6151
6152         if (statype != CFG80211_STA_AP_CLIENT &&
6153             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6154                 if (params->vlan)
6155                         return -EINVAL;
6156         }
6157
6158         switch (statype) {
6159         case CFG80211_STA_AP_MLME_CLIENT:
6160                 /* Use this only for authorizing/unauthorizing a station */
6161                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6162                         return -EOPNOTSUPP;
6163                 break;
6164         case CFG80211_STA_AP_CLIENT:
6165         case CFG80211_STA_AP_CLIENT_UNASSOC:
6166                 /* accept only the listed bits */
6167                 if (params->sta_flags_mask &
6168                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6169                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6170                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6171                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6172                                   BIT(NL80211_STA_FLAG_WME) |
6173                                   BIT(NL80211_STA_FLAG_MFP)))
6174                         return -EINVAL;
6175
6176                 /* but authenticated/associated only if driver handles it */
6177                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6178                     params->sta_flags_mask &
6179                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6180                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6181                         return -EINVAL;
6182                 break;
6183         case CFG80211_STA_IBSS:
6184         case CFG80211_STA_AP_STA:
6185                 /* reject any changes other than AUTHORIZED */
6186                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6187                         return -EINVAL;
6188                 break;
6189         case CFG80211_STA_TDLS_PEER_SETUP:
6190                 /* reject any changes other than AUTHORIZED or WME */
6191                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6192                                                BIT(NL80211_STA_FLAG_WME)))
6193                         return -EINVAL;
6194                 /* force (at least) rates when authorizing */
6195                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6196                     !params->supported_rates)
6197                         return -EINVAL;
6198                 break;
6199         case CFG80211_STA_TDLS_PEER_ACTIVE:
6200                 /* reject any changes */
6201                 return -EINVAL;
6202         case CFG80211_STA_MESH_PEER_KERNEL:
6203                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6204                         return -EINVAL;
6205                 break;
6206         case CFG80211_STA_MESH_PEER_USER:
6207                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6208                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6209                         return -EINVAL;
6210                 break;
6211         }
6212
6213         /*
6214          * Older kernel versions ignored this attribute entirely, so don't
6215          * reject attempts to update it but mark it as unused instead so the
6216          * driver won't look at the data.
6217          */
6218         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6219             statype != CFG80211_STA_TDLS_PEER_SETUP)
6220                 params->opmode_notif_used = false;
6221
6222         return 0;
6223 }
6224 EXPORT_SYMBOL(cfg80211_check_station_change);
6225
6226 /*
6227  * Get vlan interface making sure it is running and on the right wiphy.
6228  */
6229 static struct net_device *get_vlan(struct genl_info *info,
6230                                    struct cfg80211_registered_device *rdev)
6231 {
6232         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6233         struct net_device *v;
6234         int ret;
6235
6236         if (!vlanattr)
6237                 return NULL;
6238
6239         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6240         if (!v)
6241                 return ERR_PTR(-ENODEV);
6242
6243         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6244                 ret = -EINVAL;
6245                 goto error;
6246         }
6247
6248         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6249             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6250             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6251                 ret = -EINVAL;
6252                 goto error;
6253         }
6254
6255         if (!netif_running(v)) {
6256                 ret = -ENETDOWN;
6257                 goto error;
6258         }
6259
6260         return v;
6261  error:
6262         dev_put(v);
6263         return ERR_PTR(ret);
6264 }
6265
6266 static const struct nla_policy
6267 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6268         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6269         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6270 };
6271
6272 static int nl80211_parse_sta_wme(struct genl_info *info,
6273                                  struct station_parameters *params)
6274 {
6275         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6276         struct nlattr *nla;
6277         int err;
6278
6279         /* parse WME attributes if present */
6280         if (!info->attrs[NL80211_ATTR_STA_WME])
6281                 return 0;
6282
6283         nla = info->attrs[NL80211_ATTR_STA_WME];
6284         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6285                                           nl80211_sta_wme_policy,
6286                                           info->extack);
6287         if (err)
6288                 return err;
6289
6290         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6291                 params->uapsd_queues = nla_get_u8(
6292                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6293         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6294                 return -EINVAL;
6295
6296         if (tb[NL80211_STA_WME_MAX_SP])
6297                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6298
6299         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6300                 return -EINVAL;
6301
6302         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6303
6304         return 0;
6305 }
6306
6307 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6308                                       struct station_parameters *params)
6309 {
6310         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6311                 params->supported_channels =
6312                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6313                 params->supported_channels_len =
6314                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6315                 /*
6316                  * Need to include at least one (first channel, number of
6317                  * channels) tuple for each subband (checked in policy),
6318                  * and must have proper tuples for the rest of the data as well.
6319                  */
6320                 if (params->supported_channels_len % 2)
6321                         return -EINVAL;
6322         }
6323
6324         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6325                 params->supported_oper_classes =
6326                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6327                 params->supported_oper_classes_len =
6328                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6329         }
6330         return 0;
6331 }
6332
6333 static int nl80211_set_station_tdls(struct genl_info *info,
6334                                     struct station_parameters *params)
6335 {
6336         int err;
6337         /* Dummy STA entry gets updated once the peer capabilities are known */
6338         if (info->attrs[NL80211_ATTR_PEER_AID])
6339                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6340         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6341                 params->ht_capa =
6342                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6343         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6344                 params->vht_capa =
6345                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6346         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6347                 params->he_capa =
6348                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6349                 params->he_capa_len =
6350                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6351         }
6352
6353         err = nl80211_parse_sta_channel_info(info, params);
6354         if (err)
6355                 return err;
6356
6357         return nl80211_parse_sta_wme(info, params);
6358 }
6359
6360 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6361                                              struct station_parameters *params)
6362 {
6363         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6364         int idx;
6365
6366         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6367                 if (!rdev->ops->set_tx_power ||
6368                     !wiphy_ext_feature_isset(&rdev->wiphy,
6369                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6370                         return -EOPNOTSUPP;
6371
6372                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6373                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6374
6375                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6376                         idx = NL80211_ATTR_STA_TX_POWER;
6377
6378                         if (info->attrs[idx])
6379                                 params->txpwr.power =
6380                                         nla_get_s16(info->attrs[idx]);
6381                         else
6382                                 return -EINVAL;
6383                 }
6384                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6385         }
6386
6387         return 0;
6388 }
6389
6390 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6391 {
6392         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6393         struct net_device *dev = info->user_ptr[1];
6394         struct station_parameters params;
6395         u8 *mac_addr;
6396         int err;
6397
6398         memset(&params, 0, sizeof(params));
6399
6400         if (!rdev->ops->change_station)
6401                 return -EOPNOTSUPP;
6402
6403         /*
6404          * AID and listen_interval properties can be set only for unassociated
6405          * station. Include these parameters here and will check them in
6406          * cfg80211_check_station_change().
6407          */
6408         if (info->attrs[NL80211_ATTR_STA_AID])
6409                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6410
6411         if (info->attrs[NL80211_ATTR_VLAN_ID])
6412                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6413
6414         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6415                 params.listen_interval =
6416                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6417         else
6418                 params.listen_interval = -1;
6419
6420         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6421                 params.support_p2p_ps =
6422                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6423         else
6424                 params.support_p2p_ps = -1;
6425
6426         if (!info->attrs[NL80211_ATTR_MAC])
6427                 return -EINVAL;
6428
6429         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6430
6431         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6432                 params.supported_rates =
6433                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6434                 params.supported_rates_len =
6435                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6436         }
6437
6438         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6439                 params.capability =
6440                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6441                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6442         }
6443
6444         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6445                 params.ext_capab =
6446                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6447                 params.ext_capab_len =
6448                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6449         }
6450
6451         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6452                 return -EINVAL;
6453
6454         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6455                 params.plink_action =
6456                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6457
6458         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6459                 params.plink_state =
6460                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6461                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6462                         params.peer_aid = nla_get_u16(
6463                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6464                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6465         }
6466
6467         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6468                 params.local_pm = nla_get_u32(
6469                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6470
6471         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6472                 params.opmode_notif_used = true;
6473                 params.opmode_notif =
6474                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6475         }
6476
6477         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6478                 params.he_6ghz_capa =
6479                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6480
6481         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6482                 params.airtime_weight =
6483                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6484
6485         if (params.airtime_weight &&
6486             !wiphy_ext_feature_isset(&rdev->wiphy,
6487                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6488                 return -EOPNOTSUPP;
6489
6490         err = nl80211_parse_sta_txpower_setting(info, &params);
6491         if (err)
6492                 return err;
6493
6494         /* Include parameters for TDLS peer (will check later) */
6495         err = nl80211_set_station_tdls(info, &params);
6496         if (err)
6497                 return err;
6498
6499         params.vlan = get_vlan(info, rdev);
6500         if (IS_ERR(params.vlan))
6501                 return PTR_ERR(params.vlan);
6502
6503         switch (dev->ieee80211_ptr->iftype) {
6504         case NL80211_IFTYPE_AP:
6505         case NL80211_IFTYPE_AP_VLAN:
6506         case NL80211_IFTYPE_P2P_GO:
6507         case NL80211_IFTYPE_P2P_CLIENT:
6508         case NL80211_IFTYPE_STATION:
6509         case NL80211_IFTYPE_ADHOC:
6510         case NL80211_IFTYPE_MESH_POINT:
6511                 break;
6512         default:
6513                 err = -EOPNOTSUPP;
6514                 goto out_put_vlan;
6515         }
6516
6517         /* driver will call cfg80211_check_station_change() */
6518         err = rdev_change_station(rdev, dev, mac_addr, &params);
6519
6520  out_put_vlan:
6521         if (params.vlan)
6522                 dev_put(params.vlan);
6523
6524         return err;
6525 }
6526
6527 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6528 {
6529         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6530         int err;
6531         struct net_device *dev = info->user_ptr[1];
6532         struct station_parameters params;
6533         u8 *mac_addr = NULL;
6534         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6535                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6536
6537         memset(&params, 0, sizeof(params));
6538
6539         if (!rdev->ops->add_station)
6540                 return -EOPNOTSUPP;
6541
6542         if (!info->attrs[NL80211_ATTR_MAC])
6543                 return -EINVAL;
6544
6545         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6546                 return -EINVAL;
6547
6548         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6549                 return -EINVAL;
6550
6551         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6552             !info->attrs[NL80211_ATTR_PEER_AID])
6553                 return -EINVAL;
6554
6555         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6556         params.supported_rates =
6557                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6558         params.supported_rates_len =
6559                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6560         params.listen_interval =
6561                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6562
6563         if (info->attrs[NL80211_ATTR_VLAN_ID])
6564                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6565
6566         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6567                 params.support_p2p_ps =
6568                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6569         } else {
6570                 /*
6571                  * if not specified, assume it's supported for P2P GO interface,
6572                  * and is NOT supported for AP interface
6573                  */
6574                 params.support_p2p_ps =
6575                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6576         }
6577
6578         if (info->attrs[NL80211_ATTR_PEER_AID])
6579                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6580         else
6581                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6582
6583         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6584                 params.capability =
6585                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6586                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6587         }
6588
6589         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6590                 params.ext_capab =
6591                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6592                 params.ext_capab_len =
6593                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6594         }
6595
6596         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6597                 params.ht_capa =
6598                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6599
6600         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6601                 params.vht_capa =
6602                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6603
6604         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6605                 params.he_capa =
6606                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6607                 params.he_capa_len =
6608                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6609         }
6610
6611         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6612                 params.he_6ghz_capa =
6613                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6614
6615         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6616                 params.opmode_notif_used = true;
6617                 params.opmode_notif =
6618                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6619         }
6620
6621         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6622                 params.plink_action =
6623                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6624
6625         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6626                 params.airtime_weight =
6627                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6628
6629         if (params.airtime_weight &&
6630             !wiphy_ext_feature_isset(&rdev->wiphy,
6631                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6632                 return -EOPNOTSUPP;
6633
6634         err = nl80211_parse_sta_txpower_setting(info, &params);
6635         if (err)
6636                 return err;
6637
6638         err = nl80211_parse_sta_channel_info(info, &params);
6639         if (err)
6640                 return err;
6641
6642         err = nl80211_parse_sta_wme(info, &params);
6643         if (err)
6644                 return err;
6645
6646         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6647                 return -EINVAL;
6648
6649         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6650          * as userspace might just pass through the capabilities from the IEs
6651          * directly, rather than enforcing this restriction and returning an
6652          * error in this case.
6653          */
6654         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6655                 params.ht_capa = NULL;
6656                 params.vht_capa = NULL;
6657
6658                 /* HE requires WME */
6659                 if (params.he_capa_len || params.he_6ghz_capa)
6660                         return -EINVAL;
6661         }
6662
6663         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6664         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6665                 return -EINVAL;
6666
6667         /* When you run into this, adjust the code below for the new flag */
6668         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6669
6670         switch (dev->ieee80211_ptr->iftype) {
6671         case NL80211_IFTYPE_AP:
6672         case NL80211_IFTYPE_AP_VLAN:
6673         case NL80211_IFTYPE_P2P_GO:
6674                 /* ignore WME attributes if iface/sta is not capable */
6675                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6676                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6677                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6678
6679                 /* TDLS peers cannot be added */
6680                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6681                     info->attrs[NL80211_ATTR_PEER_AID])
6682                         return -EINVAL;
6683                 /* but don't bother the driver with it */
6684                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6685
6686                 /* allow authenticated/associated only if driver handles it */
6687                 if (!(rdev->wiphy.features &
6688                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6689                     params.sta_flags_mask & auth_assoc)
6690                         return -EINVAL;
6691
6692                 /* Older userspace, or userspace wanting to be compatible with
6693                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6694                  * and assoc flags in the mask, but assumes the station will be
6695                  * added as associated anyway since this was the required driver
6696                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6697                  * introduced.
6698                  * In order to not bother drivers with this quirk in the API
6699                  * set the flags in both the mask and set for new stations in
6700                  * this case.
6701                  */
6702                 if (!(params.sta_flags_mask & auth_assoc)) {
6703                         params.sta_flags_mask |= auth_assoc;
6704                         params.sta_flags_set |= auth_assoc;
6705                 }
6706
6707                 /* must be last in here for error handling */
6708                 params.vlan = get_vlan(info, rdev);
6709                 if (IS_ERR(params.vlan))
6710                         return PTR_ERR(params.vlan);
6711                 break;
6712         case NL80211_IFTYPE_MESH_POINT:
6713                 /* ignore uAPSD data */
6714                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6715
6716                 /* associated is disallowed */
6717                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6718                         return -EINVAL;
6719                 /* TDLS peers cannot be added */
6720                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6721                     info->attrs[NL80211_ATTR_PEER_AID])
6722                         return -EINVAL;
6723                 break;
6724         case NL80211_IFTYPE_STATION:
6725         case NL80211_IFTYPE_P2P_CLIENT:
6726                 /* ignore uAPSD data */
6727                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6728
6729                 /* these are disallowed */
6730                 if (params.sta_flags_mask &
6731                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6732                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6733                         return -EINVAL;
6734                 /* Only TDLS peers can be added */
6735                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6736                         return -EINVAL;
6737                 /* Can only add if TDLS ... */
6738                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6739                         return -EOPNOTSUPP;
6740                 /* ... with external setup is supported */
6741                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6742                         return -EOPNOTSUPP;
6743                 /*
6744                  * Older wpa_supplicant versions always mark the TDLS peer
6745                  * as authorized, but it shouldn't yet be.
6746                  */
6747                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6748                 break;
6749         default:
6750                 return -EOPNOTSUPP;
6751         }
6752
6753         /* be aware of params.vlan when changing code here */
6754
6755         err = rdev_add_station(rdev, dev, mac_addr, &params);
6756
6757         if (params.vlan)
6758                 dev_put(params.vlan);
6759         return err;
6760 }
6761
6762 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6763 {
6764         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6765         struct net_device *dev = info->user_ptr[1];
6766         struct station_del_parameters params;
6767
6768         memset(&params, 0, sizeof(params));
6769
6770         if (info->attrs[NL80211_ATTR_MAC])
6771                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6772
6773         switch (dev->ieee80211_ptr->iftype) {
6774         case NL80211_IFTYPE_AP:
6775         case NL80211_IFTYPE_AP_VLAN:
6776         case NL80211_IFTYPE_MESH_POINT:
6777         case NL80211_IFTYPE_P2P_GO:
6778                 /* always accept these */
6779                 break;
6780         case NL80211_IFTYPE_ADHOC:
6781                 /* conditionally accept */
6782                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6783                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6784                         break;
6785                 return -EINVAL;
6786         default:
6787                 return -EINVAL;
6788         }
6789
6790         if (!rdev->ops->del_station)
6791                 return -EOPNOTSUPP;
6792
6793         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6794                 params.subtype =
6795                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6796                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6797                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6798                         return -EINVAL;
6799         } else {
6800                 /* Default to Deauthentication frame */
6801                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6802         }
6803
6804         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6805                 params.reason_code =
6806                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6807                 if (params.reason_code == 0)
6808                         return -EINVAL; /* 0 is reserved */
6809         } else {
6810                 /* Default to reason code 2 */
6811                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6812         }
6813
6814         return rdev_del_station(rdev, dev, &params);
6815 }
6816
6817 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6818                                 int flags, struct net_device *dev,
6819                                 u8 *dst, u8 *next_hop,
6820                                 struct mpath_info *pinfo)
6821 {
6822         void *hdr;
6823         struct nlattr *pinfoattr;
6824
6825         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6826         if (!hdr)
6827                 return -1;
6828
6829         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6830             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6831             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6832             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6833                 goto nla_put_failure;
6834
6835         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6836         if (!pinfoattr)
6837                 goto nla_put_failure;
6838         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6839             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6840                         pinfo->frame_qlen))
6841                 goto nla_put_failure;
6842         if (((pinfo->filled & MPATH_INFO_SN) &&
6843              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6844             ((pinfo->filled & MPATH_INFO_METRIC) &&
6845              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6846                          pinfo->metric)) ||
6847             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6848              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6849                          pinfo->exptime)) ||
6850             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6851              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6852                         pinfo->flags)) ||
6853             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6854              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6855                          pinfo->discovery_timeout)) ||
6856             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6857              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6858                         pinfo->discovery_retries)) ||
6859             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6860              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6861                         pinfo->hop_count)) ||
6862             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6863              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6864                          pinfo->path_change_count)))
6865                 goto nla_put_failure;
6866
6867         nla_nest_end(msg, pinfoattr);
6868
6869         genlmsg_end(msg, hdr);
6870         return 0;
6871
6872  nla_put_failure:
6873         genlmsg_cancel(msg, hdr);
6874         return -EMSGSIZE;
6875 }
6876
6877 static int nl80211_dump_mpath(struct sk_buff *skb,
6878                               struct netlink_callback *cb)
6879 {
6880         struct mpath_info pinfo;
6881         struct cfg80211_registered_device *rdev;
6882         struct wireless_dev *wdev;
6883         u8 dst[ETH_ALEN];
6884         u8 next_hop[ETH_ALEN];
6885         int path_idx = cb->args[2];
6886         int err;
6887
6888         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6889         if (err)
6890                 return err;
6891         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6892         __acquire(&rdev->wiphy.mtx);
6893
6894         if (!rdev->ops->dump_mpath) {
6895                 err = -EOPNOTSUPP;
6896                 goto out_err;
6897         }
6898
6899         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6900                 err = -EOPNOTSUPP;
6901                 goto out_err;
6902         }
6903
6904         while (1) {
6905                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6906                                       next_hop, &pinfo);
6907                 if (err == -ENOENT)
6908                         break;
6909                 if (err)
6910                         goto out_err;
6911
6912                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6913                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6914                                        wdev->netdev, dst, next_hop,
6915                                        &pinfo) < 0)
6916                         goto out;
6917
6918                 path_idx++;
6919         }
6920
6921  out:
6922         cb->args[2] = path_idx;
6923         err = skb->len;
6924  out_err:
6925         wiphy_unlock(&rdev->wiphy);
6926         return err;
6927 }
6928
6929 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6930 {
6931         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6932         int err;
6933         struct net_device *dev = info->user_ptr[1];
6934         struct mpath_info pinfo;
6935         struct sk_buff *msg;
6936         u8 *dst = NULL;
6937         u8 next_hop[ETH_ALEN];
6938
6939         memset(&pinfo, 0, sizeof(pinfo));
6940
6941         if (!info->attrs[NL80211_ATTR_MAC])
6942                 return -EINVAL;
6943
6944         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6945
6946         if (!rdev->ops->get_mpath)
6947                 return -EOPNOTSUPP;
6948
6949         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6950                 return -EOPNOTSUPP;
6951
6952         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6953         if (err)
6954                 return err;
6955
6956         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6957         if (!msg)
6958                 return -ENOMEM;
6959
6960         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6961                                  dev, dst, next_hop, &pinfo) < 0) {
6962                 nlmsg_free(msg);
6963                 return -ENOBUFS;
6964         }
6965
6966         return genlmsg_reply(msg, info);
6967 }
6968
6969 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6970 {
6971         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6972         struct net_device *dev = info->user_ptr[1];
6973         u8 *dst = NULL;
6974         u8 *next_hop = NULL;
6975
6976         if (!info->attrs[NL80211_ATTR_MAC])
6977                 return -EINVAL;
6978
6979         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6980                 return -EINVAL;
6981
6982         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6983         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6984
6985         if (!rdev->ops->change_mpath)
6986                 return -EOPNOTSUPP;
6987
6988         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6989                 return -EOPNOTSUPP;
6990
6991         return rdev_change_mpath(rdev, dev, dst, next_hop);
6992 }
6993
6994 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6995 {
6996         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6997         struct net_device *dev = info->user_ptr[1];
6998         u8 *dst = NULL;
6999         u8 *next_hop = NULL;
7000
7001         if (!info->attrs[NL80211_ATTR_MAC])
7002                 return -EINVAL;
7003
7004         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
7005                 return -EINVAL;
7006
7007         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7008         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
7009
7010         if (!rdev->ops->add_mpath)
7011                 return -EOPNOTSUPP;
7012
7013         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7014                 return -EOPNOTSUPP;
7015
7016         return rdev_add_mpath(rdev, dev, dst, next_hop);
7017 }
7018
7019 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7020 {
7021         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7022         struct net_device *dev = info->user_ptr[1];
7023         u8 *dst = NULL;
7024
7025         if (info->attrs[NL80211_ATTR_MAC])
7026                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7027
7028         if (!rdev->ops->del_mpath)
7029                 return -EOPNOTSUPP;
7030
7031         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7032                 return -EOPNOTSUPP;
7033
7034         return rdev_del_mpath(rdev, dev, dst);
7035 }
7036
7037 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7038 {
7039         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7040         int err;
7041         struct net_device *dev = info->user_ptr[1];
7042         struct mpath_info pinfo;
7043         struct sk_buff *msg;
7044         u8 *dst = NULL;
7045         u8 mpp[ETH_ALEN];
7046
7047         memset(&pinfo, 0, sizeof(pinfo));
7048
7049         if (!info->attrs[NL80211_ATTR_MAC])
7050                 return -EINVAL;
7051
7052         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7053
7054         if (!rdev->ops->get_mpp)
7055                 return -EOPNOTSUPP;
7056
7057         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7058                 return -EOPNOTSUPP;
7059
7060         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7061         if (err)
7062                 return err;
7063
7064         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7065         if (!msg)
7066                 return -ENOMEM;
7067
7068         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7069                                dev, dst, mpp, &pinfo) < 0) {
7070                 nlmsg_free(msg);
7071                 return -ENOBUFS;
7072         }
7073
7074         return genlmsg_reply(msg, info);
7075 }
7076
7077 static int nl80211_dump_mpp(struct sk_buff *skb,
7078                             struct netlink_callback *cb)
7079 {
7080         struct mpath_info pinfo;
7081         struct cfg80211_registered_device *rdev;
7082         struct wireless_dev *wdev;
7083         u8 dst[ETH_ALEN];
7084         u8 mpp[ETH_ALEN];
7085         int path_idx = cb->args[2];
7086         int err;
7087
7088         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
7089         if (err)
7090                 return err;
7091         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7092         __acquire(&rdev->wiphy.mtx);
7093
7094         if (!rdev->ops->dump_mpp) {
7095                 err = -EOPNOTSUPP;
7096                 goto out_err;
7097         }
7098
7099         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7100                 err = -EOPNOTSUPP;
7101                 goto out_err;
7102         }
7103
7104         while (1) {
7105                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7106                                     mpp, &pinfo);
7107                 if (err == -ENOENT)
7108                         break;
7109                 if (err)
7110                         goto out_err;
7111
7112                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7113                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7114                                        wdev->netdev, dst, mpp,
7115                                        &pinfo) < 0)
7116                         goto out;
7117
7118                 path_idx++;
7119         }
7120
7121  out:
7122         cb->args[2] = path_idx;
7123         err = skb->len;
7124  out_err:
7125         wiphy_unlock(&rdev->wiphy);
7126         return err;
7127 }
7128
7129 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7130 {
7131         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7132         struct net_device *dev = info->user_ptr[1];
7133         struct wireless_dev *wdev = dev->ieee80211_ptr;
7134         struct bss_parameters params;
7135         int err;
7136
7137         memset(&params, 0, sizeof(params));
7138         /* default to not changing parameters */
7139         params.use_cts_prot = -1;
7140         params.use_short_preamble = -1;
7141         params.use_short_slot_time = -1;
7142         params.ap_isolate = -1;
7143         params.ht_opmode = -1;
7144         params.p2p_ctwindow = -1;
7145         params.p2p_opp_ps = -1;
7146
7147         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7148                 params.use_cts_prot =
7149                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7150         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7151                 params.use_short_preamble =
7152                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7153         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7154                 params.use_short_slot_time =
7155                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7156         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7157                 params.basic_rates =
7158                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7159                 params.basic_rates_len =
7160                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7161         }
7162         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7163                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7164         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7165                 params.ht_opmode =
7166                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7167
7168         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7169                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7170                         return -EINVAL;
7171                 params.p2p_ctwindow =
7172                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7173                 if (params.p2p_ctwindow != 0 &&
7174                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7175                         return -EINVAL;
7176         }
7177
7178         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7179                 u8 tmp;
7180
7181                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7182                         return -EINVAL;
7183                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7184                 params.p2p_opp_ps = tmp;
7185                 if (params.p2p_opp_ps &&
7186                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7187                         return -EINVAL;
7188         }
7189
7190         if (!rdev->ops->change_bss)
7191                 return -EOPNOTSUPP;
7192
7193         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7194             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7195                 return -EOPNOTSUPP;
7196
7197         wdev_lock(wdev);
7198         err = rdev_change_bss(rdev, dev, &params);
7199         wdev_unlock(wdev);
7200
7201         return err;
7202 }
7203
7204 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7205 {
7206         char *data = NULL;
7207         bool is_indoor;
7208         enum nl80211_user_reg_hint_type user_reg_hint_type;
7209         u32 owner_nlportid;
7210
7211         /*
7212          * You should only get this when cfg80211 hasn't yet initialized
7213          * completely when built-in to the kernel right between the time
7214          * window between nl80211_init() and regulatory_init(), if that is
7215          * even possible.
7216          */
7217         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7218                 return -EINPROGRESS;
7219
7220         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7221                 user_reg_hint_type =
7222                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7223         else
7224                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7225
7226         switch (user_reg_hint_type) {
7227         case NL80211_USER_REG_HINT_USER:
7228         case NL80211_USER_REG_HINT_CELL_BASE:
7229                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7230                         return -EINVAL;
7231
7232                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7233                 return regulatory_hint_user(data, user_reg_hint_type);
7234         case NL80211_USER_REG_HINT_INDOOR:
7235                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7236                         owner_nlportid = info->snd_portid;
7237                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7238                 } else {
7239                         owner_nlportid = 0;
7240                         is_indoor = true;
7241                 }
7242
7243                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7244         default:
7245                 return -EINVAL;
7246         }
7247 }
7248
7249 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7250 {
7251         return reg_reload_regdb();
7252 }
7253
7254 static int nl80211_get_mesh_config(struct sk_buff *skb,
7255                                    struct genl_info *info)
7256 {
7257         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7258         struct net_device *dev = info->user_ptr[1];
7259         struct wireless_dev *wdev = dev->ieee80211_ptr;
7260         struct mesh_config cur_params;
7261         int err = 0;
7262         void *hdr;
7263         struct nlattr *pinfoattr;
7264         struct sk_buff *msg;
7265
7266         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7267                 return -EOPNOTSUPP;
7268
7269         if (!rdev->ops->get_mesh_config)
7270                 return -EOPNOTSUPP;
7271
7272         wdev_lock(wdev);
7273         /* If not connected, get default parameters */
7274         if (!wdev->mesh_id_len)
7275                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7276         else
7277                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7278         wdev_unlock(wdev);
7279
7280         if (err)
7281                 return err;
7282
7283         /* Draw up a netlink message to send back */
7284         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7285         if (!msg)
7286                 return -ENOMEM;
7287         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7288                              NL80211_CMD_GET_MESH_CONFIG);
7289         if (!hdr)
7290                 goto out;
7291         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7292         if (!pinfoattr)
7293                 goto nla_put_failure;
7294         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7295             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7296                         cur_params.dot11MeshRetryTimeout) ||
7297             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7298                         cur_params.dot11MeshConfirmTimeout) ||
7299             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7300                         cur_params.dot11MeshHoldingTimeout) ||
7301             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7302                         cur_params.dot11MeshMaxPeerLinks) ||
7303             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7304                        cur_params.dot11MeshMaxRetries) ||
7305             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7306                        cur_params.dot11MeshTTL) ||
7307             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7308                        cur_params.element_ttl) ||
7309             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7310                        cur_params.auto_open_plinks) ||
7311             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7312                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7313             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7314                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7315             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7316                         cur_params.path_refresh_time) ||
7317             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7318                         cur_params.min_discovery_timeout) ||
7319             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7320                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7321             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7322                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7323             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7324                         cur_params.dot11MeshHWMPperrMinInterval) ||
7325             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7326                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7327             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7328                        cur_params.dot11MeshHWMPRootMode) ||
7329             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7330                         cur_params.dot11MeshHWMPRannInterval) ||
7331             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7332                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7333             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7334                        cur_params.dot11MeshForwarding) ||
7335             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7336                         cur_params.rssi_threshold) ||
7337             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7338                         cur_params.ht_opmode) ||
7339             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7340                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7341             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7342                         cur_params.dot11MeshHWMProotInterval) ||
7343             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7344                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7345             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7346                         cur_params.power_mode) ||
7347             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7348                         cur_params.dot11MeshAwakeWindowDuration) ||
7349             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7350                         cur_params.plink_timeout) ||
7351             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7352                        cur_params.dot11MeshConnectedToMeshGate) ||
7353             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7354                        cur_params.dot11MeshNolearn) ||
7355             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7356                        cur_params.dot11MeshConnectedToAuthServer))
7357                 goto nla_put_failure;
7358         nla_nest_end(msg, pinfoattr);
7359         genlmsg_end(msg, hdr);
7360         return genlmsg_reply(msg, info);
7361
7362  nla_put_failure:
7363  out:
7364         nlmsg_free(msg);
7365         return -ENOBUFS;
7366 }
7367
7368 static const struct nla_policy
7369 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7370         [NL80211_MESHCONF_RETRY_TIMEOUT] =
7371                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7372         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7373                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7374         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7375                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7376         [NL80211_MESHCONF_MAX_PEER_LINKS] =
7377                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7378         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7379         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7380         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7381         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7382         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7383                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7384         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7385         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7386         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7387         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7388         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7389                 NLA_POLICY_MIN(NLA_U16, 1),
7390         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7391                 NLA_POLICY_MIN(NLA_U16, 1),
7392         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7393                 NLA_POLICY_MIN(NLA_U16, 1),
7394         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7395         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7396                 NLA_POLICY_MIN(NLA_U16, 1),
7397         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7398         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7399         [NL80211_MESHCONF_RSSI_THRESHOLD] =
7400                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7401         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7402         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7403         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7404                 NLA_POLICY_MIN(NLA_U16, 1),
7405         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7406                 NLA_POLICY_MIN(NLA_U16, 1),
7407         [NL80211_MESHCONF_POWER_MODE] =
7408                 NLA_POLICY_RANGE(NLA_U32,
7409                                  NL80211_MESH_POWER_ACTIVE,
7410                                  NL80211_MESH_POWER_MAX),
7411         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7412         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7413         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7414         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7415         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7416 };
7417
7418 static const struct nla_policy
7419         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7420         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7421         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7422         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7423         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7424         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7425         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7426         [NL80211_MESH_SETUP_IE] =
7427                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7428                                        IEEE80211_MAX_DATA_LEN),
7429         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7430 };
7431
7432 static int nl80211_parse_mesh_config(struct genl_info *info,
7433                                      struct mesh_config *cfg,
7434                                      u32 *mask_out)
7435 {
7436         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7437         u32 mask = 0;
7438         u16 ht_opmode;
7439
7440 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
7441 do {                                                                    \
7442         if (tb[attr]) {                                                 \
7443                 cfg->param = fn(tb[attr]);                              \
7444                 mask |= BIT((attr) - 1);                                \
7445         }                                                               \
7446 } while (0)
7447
7448         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7449                 return -EINVAL;
7450         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7451                 return -EINVAL;
7452
7453         /* This makes sure that there aren't more than 32 mesh config
7454          * parameters (otherwise our bitfield scheme would not work.) */
7455         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7456
7457         /* Fill in the params struct */
7458         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7459                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7460         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7461                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
7462                                   nla_get_u16);
7463         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7464                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7465                                   nla_get_u16);
7466         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7467                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7468                                   nla_get_u16);
7469         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7470                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7471         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7472                                   NL80211_MESHCONF_TTL, nla_get_u8);
7473         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7474                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7475         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7476                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7477                                   nla_get_u8);
7478         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7479                                   mask,
7480                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7481                                   nla_get_u32);
7482         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7483                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7484                                   nla_get_u8);
7485         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7486                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7487                                   nla_get_u32);
7488         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7489             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7490                 return -EINVAL;
7491         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7492                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7493                                   nla_get_u16);
7494         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7495                                   mask,
7496                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7497                                   nla_get_u32);
7498         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7499             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7500              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7501                 return -EINVAL;
7502         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7503                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7504                                   nla_get_u16);
7505         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7506                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7507                                   nla_get_u16);
7508         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7509                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7510                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7511                                   nla_get_u16);
7512         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7513                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7514         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7515                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7516                                   nla_get_u16);
7517         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7518                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7519                                   nla_get_u8);
7520         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7521                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7522         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7523                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7524                                   nla_get_s32);
7525         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7526                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7527                                   nla_get_u8);
7528         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7529                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7530                                   nla_get_u8);
7531         /*
7532          * Check HT operation mode based on
7533          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7534          */
7535         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7536                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7537
7538                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7539                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7540                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7541                         return -EINVAL;
7542
7543                 /* NON_HT_STA bit is reserved, but some programs set it */
7544                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7545
7546                 cfg->ht_opmode = ht_opmode;
7547                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7548         }
7549         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7550                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7551                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7552                                   nla_get_u32);
7553         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7554             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7555              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7556                 return -EINVAL;
7557         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7558                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7559                                   nla_get_u16);
7560         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7561                                   mask,
7562                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7563                                   nla_get_u16);
7564         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7565                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7566         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7567                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7568         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7569                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7570         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7571                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7572         if (mask_out)
7573                 *mask_out = mask;
7574
7575         return 0;
7576
7577 #undef FILL_IN_MESH_PARAM_IF_SET
7578 }
7579
7580 static int nl80211_parse_mesh_setup(struct genl_info *info,
7581                                      struct mesh_setup *setup)
7582 {
7583         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7584         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7585
7586         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7587                 return -EINVAL;
7588         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7589                 return -EINVAL;
7590
7591         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7592                 setup->sync_method =
7593                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7594                  IEEE80211_SYNC_METHOD_VENDOR :
7595                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7596
7597         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7598                 setup->path_sel_proto =
7599                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7600                  IEEE80211_PATH_PROTOCOL_VENDOR :
7601                  IEEE80211_PATH_PROTOCOL_HWMP;
7602
7603         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7604                 setup->path_metric =
7605                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7606                  IEEE80211_PATH_METRIC_VENDOR :
7607                  IEEE80211_PATH_METRIC_AIRTIME;
7608
7609         if (tb[NL80211_MESH_SETUP_IE]) {
7610                 struct nlattr *ieattr =
7611                         tb[NL80211_MESH_SETUP_IE];
7612                 setup->ie = nla_data(ieattr);
7613                 setup->ie_len = nla_len(ieattr);
7614         }
7615         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7616             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7617                 return -EINVAL;
7618         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7619         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7620         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7621         if (setup->is_secure)
7622                 setup->user_mpm = true;
7623
7624         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7625                 if (!setup->user_mpm)
7626                         return -EINVAL;
7627                 setup->auth_id =
7628                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7629         }
7630
7631         return 0;
7632 }
7633
7634 static int nl80211_update_mesh_config(struct sk_buff *skb,
7635                                       struct genl_info *info)
7636 {
7637         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7638         struct net_device *dev = info->user_ptr[1];
7639         struct wireless_dev *wdev = dev->ieee80211_ptr;
7640         struct mesh_config cfg;
7641         u32 mask;
7642         int err;
7643
7644         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7645                 return -EOPNOTSUPP;
7646
7647         if (!rdev->ops->update_mesh_config)
7648                 return -EOPNOTSUPP;
7649
7650         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7651         if (err)
7652                 return err;
7653
7654         wdev_lock(wdev);
7655         if (!wdev->mesh_id_len)
7656                 err = -ENOLINK;
7657
7658         if (!err)
7659                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7660
7661         wdev_unlock(wdev);
7662
7663         return err;
7664 }
7665
7666 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7667                               struct sk_buff *msg)
7668 {
7669         struct nlattr *nl_reg_rules;
7670         unsigned int i;
7671
7672         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7673             (regdom->dfs_region &&
7674              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7675                 goto nla_put_failure;
7676
7677         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7678         if (!nl_reg_rules)
7679                 goto nla_put_failure;
7680
7681         for (i = 0; i < regdom->n_reg_rules; i++) {
7682                 struct nlattr *nl_reg_rule;
7683                 const struct ieee80211_reg_rule *reg_rule;
7684                 const struct ieee80211_freq_range *freq_range;
7685                 const struct ieee80211_power_rule *power_rule;
7686                 unsigned int max_bandwidth_khz;
7687
7688                 reg_rule = &regdom->reg_rules[i];
7689                 freq_range = &reg_rule->freq_range;
7690                 power_rule = &reg_rule->power_rule;
7691
7692                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7693                 if (!nl_reg_rule)
7694                         goto nla_put_failure;
7695
7696                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7697                 if (!max_bandwidth_khz)
7698                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7699                                                                   reg_rule);
7700
7701                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7702                                 reg_rule->flags) ||
7703                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7704                                 freq_range->start_freq_khz) ||
7705                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7706                                 freq_range->end_freq_khz) ||
7707                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7708                                 max_bandwidth_khz) ||
7709                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7710                                 power_rule->max_antenna_gain) ||
7711                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7712                                 power_rule->max_eirp) ||
7713                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7714                                 reg_rule->dfs_cac_ms))
7715                         goto nla_put_failure;
7716
7717                 nla_nest_end(msg, nl_reg_rule);
7718         }
7719
7720         nla_nest_end(msg, nl_reg_rules);
7721         return 0;
7722
7723 nla_put_failure:
7724         return -EMSGSIZE;
7725 }
7726
7727 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7728 {
7729         const struct ieee80211_regdomain *regdom = NULL;
7730         struct cfg80211_registered_device *rdev;
7731         struct wiphy *wiphy = NULL;
7732         struct sk_buff *msg;
7733         void *hdr;
7734
7735         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7736         if (!msg)
7737                 return -ENOBUFS;
7738
7739         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7740                              NL80211_CMD_GET_REG);
7741         if (!hdr)
7742                 goto put_failure;
7743
7744         rtnl_lock();
7745
7746         if (info->attrs[NL80211_ATTR_WIPHY]) {
7747                 bool self_managed;
7748
7749                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7750                 if (IS_ERR(rdev)) {
7751                         nlmsg_free(msg);
7752                         rtnl_unlock();
7753                         return PTR_ERR(rdev);
7754                 }
7755
7756                 wiphy = &rdev->wiphy;
7757                 self_managed = wiphy->regulatory_flags &
7758                                REGULATORY_WIPHY_SELF_MANAGED;
7759                 regdom = get_wiphy_regdom(wiphy);
7760
7761                 /* a self-managed-reg device must have a private regdom */
7762                 if (WARN_ON(!regdom && self_managed)) {
7763                         nlmsg_free(msg);
7764                         rtnl_unlock();
7765                         return -EINVAL;
7766                 }
7767
7768                 if (regdom &&
7769                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7770                         goto nla_put_failure;
7771         }
7772
7773         if (!wiphy && reg_last_request_cell_base() &&
7774             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7775                         NL80211_USER_REG_HINT_CELL_BASE))
7776                 goto nla_put_failure;
7777
7778         rcu_read_lock();
7779
7780         if (!regdom)
7781                 regdom = rcu_dereference(cfg80211_regdomain);
7782
7783         if (nl80211_put_regdom(regdom, msg))
7784                 goto nla_put_failure_rcu;
7785
7786         rcu_read_unlock();
7787
7788         genlmsg_end(msg, hdr);
7789         rtnl_unlock();
7790         return genlmsg_reply(msg, info);
7791
7792 nla_put_failure_rcu:
7793         rcu_read_unlock();
7794 nla_put_failure:
7795         rtnl_unlock();
7796 put_failure:
7797         nlmsg_free(msg);
7798         return -EMSGSIZE;
7799 }
7800
7801 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7802                                u32 seq, int flags, struct wiphy *wiphy,
7803                                const struct ieee80211_regdomain *regdom)
7804 {
7805         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7806                                    NL80211_CMD_GET_REG);
7807
7808         if (!hdr)
7809                 return -1;
7810
7811         genl_dump_check_consistent(cb, hdr);
7812
7813         if (nl80211_put_regdom(regdom, msg))
7814                 goto nla_put_failure;
7815
7816         if (!wiphy && reg_last_request_cell_base() &&
7817             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7818                         NL80211_USER_REG_HINT_CELL_BASE))
7819                 goto nla_put_failure;
7820
7821         if (wiphy &&
7822             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7823                 goto nla_put_failure;
7824
7825         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7826             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7827                 goto nla_put_failure;
7828
7829         genlmsg_end(msg, hdr);
7830         return 0;
7831
7832 nla_put_failure:
7833         genlmsg_cancel(msg, hdr);
7834         return -EMSGSIZE;
7835 }
7836
7837 static int nl80211_get_reg_dump(struct sk_buff *skb,
7838                                 struct netlink_callback *cb)
7839 {
7840         const struct ieee80211_regdomain *regdom = NULL;
7841         struct cfg80211_registered_device *rdev;
7842         int err, reg_idx, start = cb->args[2];
7843
7844         rtnl_lock();
7845
7846         if (cfg80211_regdomain && start == 0) {
7847                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7848                                           NLM_F_MULTI, NULL,
7849                                           rtnl_dereference(cfg80211_regdomain));
7850                 if (err < 0)
7851                         goto out_err;
7852         }
7853
7854         /* the global regdom is idx 0 */
7855         reg_idx = 1;
7856         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7857                 regdom = get_wiphy_regdom(&rdev->wiphy);
7858                 if (!regdom)
7859                         continue;
7860
7861                 if (++reg_idx <= start)
7862                         continue;
7863
7864                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7865                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7866                 if (err < 0) {
7867                         reg_idx--;
7868                         break;
7869                 }
7870         }
7871
7872         cb->args[2] = reg_idx;
7873         err = skb->len;
7874 out_err:
7875         rtnl_unlock();
7876         return err;
7877 }
7878
7879 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7880 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7881         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7882         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7883         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7884         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7885         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7886         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7887         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7888 };
7889
7890 static int parse_reg_rule(struct nlattr *tb[],
7891         struct ieee80211_reg_rule *reg_rule)
7892 {
7893         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7894         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7895
7896         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7897                 return -EINVAL;
7898         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7899                 return -EINVAL;
7900         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7901                 return -EINVAL;
7902         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7903                 return -EINVAL;
7904         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7905                 return -EINVAL;
7906
7907         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7908
7909         freq_range->start_freq_khz =
7910                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7911         freq_range->end_freq_khz =
7912                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7913         freq_range->max_bandwidth_khz =
7914                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7915
7916         power_rule->max_eirp =
7917                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7918
7919         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7920                 power_rule->max_antenna_gain =
7921                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7922
7923         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7924                 reg_rule->dfs_cac_ms =
7925                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7926
7927         return 0;
7928 }
7929
7930 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7931 {
7932         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7933         struct nlattr *nl_reg_rule;
7934         char *alpha2;
7935         int rem_reg_rules, r;
7936         u32 num_rules = 0, rule_idx = 0;
7937         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7938         struct ieee80211_regdomain *rd;
7939
7940         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7941                 return -EINVAL;
7942
7943         if (!info->attrs[NL80211_ATTR_REG_RULES])
7944                 return -EINVAL;
7945
7946         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7947
7948         if (info->attrs[NL80211_ATTR_DFS_REGION])
7949                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7950
7951         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7952                             rem_reg_rules) {
7953                 num_rules++;
7954                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7955                         return -EINVAL;
7956         }
7957
7958         rtnl_lock();
7959         if (!reg_is_valid_request(alpha2)) {
7960                 r = -EINVAL;
7961                 goto out;
7962         }
7963
7964         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7965         if (!rd) {
7966                 r = -ENOMEM;
7967                 goto out;
7968         }
7969
7970         rd->n_reg_rules = num_rules;
7971         rd->alpha2[0] = alpha2[0];
7972         rd->alpha2[1] = alpha2[1];
7973
7974         /*
7975          * Disable DFS master mode if the DFS region was
7976          * not supported or known on this kernel.
7977          */
7978         if (reg_supported_dfs_region(dfs_region))
7979                 rd->dfs_region = dfs_region;
7980
7981         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7982                             rem_reg_rules) {
7983                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7984                                                 nl_reg_rule, reg_rule_policy,
7985                                                 info->extack);
7986                 if (r)
7987                         goto bad_reg;
7988                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7989                 if (r)
7990                         goto bad_reg;
7991
7992                 rule_idx++;
7993
7994                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7995                         r = -EINVAL;
7996                         goto bad_reg;
7997                 }
7998         }
7999
8000         r = set_regdom(rd, REGD_SOURCE_CRDA);
8001         /* set_regdom takes ownership of rd */
8002         rd = NULL;
8003  bad_reg:
8004         kfree(rd);
8005  out:
8006         rtnl_unlock();
8007         return r;
8008 }
8009 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
8010
8011 static int validate_scan_freqs(struct nlattr *freqs)
8012 {
8013         struct nlattr *attr1, *attr2;
8014         int n_channels = 0, tmp1, tmp2;
8015
8016         nla_for_each_nested(attr1, freqs, tmp1)
8017                 if (nla_len(attr1) != sizeof(u32))
8018                         return 0;
8019
8020         nla_for_each_nested(attr1, freqs, tmp1) {
8021                 n_channels++;
8022                 /*
8023                  * Some hardware has a limited channel list for
8024                  * scanning, and it is pretty much nonsensical
8025                  * to scan for a channel twice, so disallow that
8026                  * and don't require drivers to check that the
8027                  * channel list they get isn't longer than what
8028                  * they can scan, as long as they can scan all
8029                  * the channels they registered at once.
8030                  */
8031                 nla_for_each_nested(attr2, freqs, tmp2)
8032                         if (attr1 != attr2 &&
8033                             nla_get_u32(attr1) == nla_get_u32(attr2))
8034                                 return 0;
8035         }
8036
8037         return n_channels;
8038 }
8039
8040 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8041 {
8042         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8043 }
8044
8045 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8046                             struct cfg80211_bss_selection *bss_select)
8047 {
8048         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8049         struct nlattr *nest;
8050         int err;
8051         bool found = false;
8052         int i;
8053
8054         /* only process one nested attribute */
8055         nest = nla_data(nla);
8056         if (!nla_ok(nest, nla_len(nest)))
8057                 return -EINVAL;
8058
8059         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8060                                           nest, nl80211_bss_select_policy,
8061                                           NULL);
8062         if (err)
8063                 return err;
8064
8065         /* only one attribute may be given */
8066         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8067                 if (attr[i]) {
8068                         if (found)
8069                                 return -EINVAL;
8070                         found = true;
8071                 }
8072         }
8073
8074         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8075
8076         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8077                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8078
8079         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8080                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8081                 bss_select->param.band_pref =
8082                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8083                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8084                         return -EINVAL;
8085         }
8086
8087         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8088                 struct nl80211_bss_select_rssi_adjust *adj_param;
8089
8090                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8091                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8092                 bss_select->param.adjust.band = adj_param->band;
8093                 bss_select->param.adjust.delta = adj_param->delta;
8094                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8095                         return -EINVAL;
8096         }
8097
8098         /* user-space did not provide behaviour attribute */
8099         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8100                 return -EINVAL;
8101
8102         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8103                 return -EINVAL;
8104
8105         return 0;
8106 }
8107
8108 int nl80211_parse_random_mac(struct nlattr **attrs,
8109                              u8 *mac_addr, u8 *mac_addr_mask)
8110 {
8111         int i;
8112
8113         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8114                 eth_zero_addr(mac_addr);
8115                 eth_zero_addr(mac_addr_mask);
8116                 mac_addr[0] = 0x2;
8117                 mac_addr_mask[0] = 0x3;
8118
8119                 return 0;
8120         }
8121
8122         /* need both or none */
8123         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8124                 return -EINVAL;
8125
8126         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8127         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8128
8129         /* don't allow or configure an mcast address */
8130         if (!is_multicast_ether_addr(mac_addr_mask) ||
8131             is_multicast_ether_addr(mac_addr))
8132                 return -EINVAL;
8133
8134         /*
8135          * allow users to pass a MAC address that has bits set outside
8136          * of the mask, but don't bother drivers with having to deal
8137          * with such bits
8138          */
8139         for (i = 0; i < ETH_ALEN; i++)
8140                 mac_addr[i] &= mac_addr_mask[i];
8141
8142         return 0;
8143 }
8144
8145 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
8146 {
8147         ASSERT_WDEV_LOCK(wdev);
8148
8149         if (!cfg80211_beaconing_iface_active(wdev))
8150                 return true;
8151
8152         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
8153                 return true;
8154
8155         return regulatory_pre_cac_allowed(wdev->wiphy);
8156 }
8157
8158 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8159                                     enum nl80211_ext_feature_index feat)
8160 {
8161         if (!(flags & flag))
8162                 return true;
8163         if (wiphy_ext_feature_isset(wiphy, feat))
8164                 return true;
8165         return false;
8166 }
8167
8168 static int
8169 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8170                          void *request, struct nlattr **attrs,
8171                          bool is_sched_scan)
8172 {
8173         u8 *mac_addr, *mac_addr_mask;
8174         u32 *flags;
8175         enum nl80211_feature_flags randomness_flag;
8176
8177         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8178                 return 0;
8179
8180         if (is_sched_scan) {
8181                 struct cfg80211_sched_scan_request *req = request;
8182
8183                 randomness_flag = wdev ?
8184                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8185                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8186                 flags = &req->flags;
8187                 mac_addr = req->mac_addr;
8188                 mac_addr_mask = req->mac_addr_mask;
8189         } else {
8190                 struct cfg80211_scan_request *req = request;
8191
8192                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8193                 flags = &req->flags;
8194                 mac_addr = req->mac_addr;
8195                 mac_addr_mask = req->mac_addr_mask;
8196         }
8197
8198         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8199
8200         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8201              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8202             !nl80211_check_scan_feat(wiphy, *flags,
8203                                      NL80211_SCAN_FLAG_LOW_SPAN,
8204                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8205             !nl80211_check_scan_feat(wiphy, *flags,
8206                                      NL80211_SCAN_FLAG_LOW_POWER,
8207                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8208             !nl80211_check_scan_feat(wiphy, *flags,
8209                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8210                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8211             !nl80211_check_scan_feat(wiphy, *flags,
8212                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8213                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8214             !nl80211_check_scan_feat(wiphy, *flags,
8215                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8216                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8217             !nl80211_check_scan_feat(wiphy, *flags,
8218                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8219                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8220             !nl80211_check_scan_feat(wiphy, *flags,
8221                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8222                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8223             !nl80211_check_scan_feat(wiphy, *flags,
8224                                      NL80211_SCAN_FLAG_RANDOM_SN,
8225                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8226             !nl80211_check_scan_feat(wiphy, *flags,
8227                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8228                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8229                 return -EOPNOTSUPP;
8230
8231         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8232                 int err;
8233
8234                 if (!(wiphy->features & randomness_flag) ||
8235                     (wdev && wdev->current_bss))
8236                         return -EOPNOTSUPP;
8237
8238                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8239                 if (err)
8240                         return err;
8241         }
8242
8243         return 0;
8244 }
8245
8246 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8247 {
8248         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8249         struct wireless_dev *wdev = info->user_ptr[1];
8250         struct cfg80211_scan_request *request;
8251         struct nlattr *scan_freqs = NULL;
8252         bool scan_freqs_khz = false;
8253         struct nlattr *attr;
8254         struct wiphy *wiphy;
8255         int err, tmp, n_ssids = 0, n_channels, i;
8256         size_t ie_len;
8257
8258         wiphy = &rdev->wiphy;
8259
8260         if (wdev->iftype == NL80211_IFTYPE_NAN)
8261                 return -EOPNOTSUPP;
8262
8263         if (!rdev->ops->scan)
8264                 return -EOPNOTSUPP;
8265
8266         if (rdev->scan_req || rdev->scan_msg)
8267                 return -EBUSY;
8268
8269         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8270                 if (!wiphy_ext_feature_isset(wiphy,
8271                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8272                         return -EOPNOTSUPP;
8273                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8274                 scan_freqs_khz = true;
8275         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8276                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8277
8278         if (scan_freqs) {
8279                 n_channels = validate_scan_freqs(scan_freqs);
8280                 if (!n_channels)
8281                         return -EINVAL;
8282         } else {
8283                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8284         }
8285
8286         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8287                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8288                         n_ssids++;
8289
8290         if (n_ssids > wiphy->max_scan_ssids)
8291                 return -EINVAL;
8292
8293         if (info->attrs[NL80211_ATTR_IE])
8294                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8295         else
8296                 ie_len = 0;
8297
8298         if (ie_len > wiphy->max_scan_ie_len)
8299                 return -EINVAL;
8300
8301         request = kzalloc(sizeof(*request)
8302                         + sizeof(*request->ssids) * n_ssids
8303                         + sizeof(*request->channels) * n_channels
8304                         + ie_len, GFP_KERNEL);
8305         if (!request)
8306                 return -ENOMEM;
8307
8308         if (n_ssids)
8309                 request->ssids = (void *)&request->channels[n_channels];
8310         request->n_ssids = n_ssids;
8311         if (ie_len) {
8312                 if (n_ssids)
8313                         request->ie = (void *)(request->ssids + n_ssids);
8314                 else
8315                         request->ie = (void *)(request->channels + n_channels);
8316         }
8317
8318         i = 0;
8319         if (scan_freqs) {
8320                 /* user specified, bail out if channel not found */
8321                 nla_for_each_nested(attr, scan_freqs, tmp) {
8322                         struct ieee80211_channel *chan;
8323                         int freq = nla_get_u32(attr);
8324
8325                         if (!scan_freqs_khz)
8326                                 freq = MHZ_TO_KHZ(freq);
8327
8328                         chan = ieee80211_get_channel_khz(wiphy, freq);
8329                         if (!chan) {
8330                                 err = -EINVAL;
8331                                 goto out_free;
8332                         }
8333
8334                         /* ignore disabled channels */
8335                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8336                                 continue;
8337
8338                         request->channels[i] = chan;
8339                         i++;
8340                 }
8341         } else {
8342                 enum nl80211_band band;
8343
8344                 /* all channels */
8345                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8346                         int j;
8347
8348                         if (!wiphy->bands[band])
8349                                 continue;
8350                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8351                                 struct ieee80211_channel *chan;
8352
8353                                 chan = &wiphy->bands[band]->channels[j];
8354
8355                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8356                                         continue;
8357
8358                                 request->channels[i] = chan;
8359                                 i++;
8360                         }
8361                 }
8362         }
8363
8364         if (!i) {
8365                 err = -EINVAL;
8366                 goto out_free;
8367         }
8368
8369         request->n_channels = i;
8370
8371         wdev_lock(wdev);
8372         if (!cfg80211_off_channel_oper_allowed(wdev)) {
8373                 struct ieee80211_channel *chan;
8374
8375                 if (request->n_channels != 1) {
8376                         wdev_unlock(wdev);
8377                         err = -EBUSY;
8378                         goto out_free;
8379                 }
8380
8381                 chan = request->channels[0];
8382                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8383                         wdev_unlock(wdev);
8384                         err = -EBUSY;
8385                         goto out_free;
8386                 }
8387         }
8388         wdev_unlock(wdev);
8389
8390         i = 0;
8391         if (n_ssids) {
8392                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8393                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8394                                 err = -EINVAL;
8395                                 goto out_free;
8396                         }
8397                         request->ssids[i].ssid_len = nla_len(attr);
8398                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8399                         i++;
8400                 }
8401         }
8402
8403         if (info->attrs[NL80211_ATTR_IE]) {
8404                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8405                 memcpy((void *)request->ie,
8406                        nla_data(info->attrs[NL80211_ATTR_IE]),
8407                        request->ie_len);
8408         }
8409
8410         for (i = 0; i < NUM_NL80211_BANDS; i++)
8411                 if (wiphy->bands[i])
8412                         request->rates[i] =
8413                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
8414
8415         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8416                 nla_for_each_nested(attr,
8417                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8418                                     tmp) {
8419                         enum nl80211_band band = nla_type(attr);
8420
8421                         if (band < 0 || band >= NUM_NL80211_BANDS) {
8422                                 err = -EINVAL;
8423                                 goto out_free;
8424                         }
8425
8426                         if (!wiphy->bands[band])
8427                                 continue;
8428
8429                         err = ieee80211_get_ratemask(wiphy->bands[band],
8430                                                      nla_data(attr),
8431                                                      nla_len(attr),
8432                                                      &request->rates[band]);
8433                         if (err)
8434                                 goto out_free;
8435                 }
8436         }
8437
8438         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8439                 request->duration =
8440                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8441                 request->duration_mandatory =
8442                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8443         }
8444
8445         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8446                                        false);
8447         if (err)
8448                 goto out_free;
8449
8450         request->no_cck =
8451                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8452
8453         /* Initial implementation used NL80211_ATTR_MAC to set the specific
8454          * BSSID to scan for. This was problematic because that same attribute
8455          * was already used for another purpose (local random MAC address). The
8456          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8457          * compatibility with older userspace components, also use the
8458          * NL80211_ATTR_MAC value here if it can be determined to be used for
8459          * the specific BSSID use case instead of the random MAC address
8460          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8461          */
8462         if (info->attrs[NL80211_ATTR_BSSID])
8463                 memcpy(request->bssid,
8464                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8465         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8466                  info->attrs[NL80211_ATTR_MAC])
8467                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8468                        ETH_ALEN);
8469         else
8470                 eth_broadcast_addr(request->bssid);
8471
8472         request->wdev = wdev;
8473         request->wiphy = &rdev->wiphy;
8474         request->scan_start = jiffies;
8475
8476         rdev->scan_req = request;
8477         err = cfg80211_scan(rdev);
8478
8479         if (err)
8480                 goto out_free;
8481
8482         nl80211_send_scan_start(rdev, wdev);
8483         if (wdev->netdev)
8484                 dev_hold(wdev->netdev);
8485
8486         return 0;
8487
8488  out_free:
8489         rdev->scan_req = NULL;
8490         kfree(request);
8491
8492         return err;
8493 }
8494
8495 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8496 {
8497         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8498         struct wireless_dev *wdev = info->user_ptr[1];
8499
8500         if (!rdev->ops->abort_scan)
8501                 return -EOPNOTSUPP;
8502
8503         if (rdev->scan_msg)
8504                 return 0;
8505
8506         if (!rdev->scan_req)
8507                 return -ENOENT;
8508
8509         rdev_abort_scan(rdev, wdev);
8510         return 0;
8511 }
8512
8513 static int
8514 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8515                                struct cfg80211_sched_scan_request *request,
8516                                struct nlattr **attrs)
8517 {
8518         int tmp, err, i = 0;
8519         struct nlattr *attr;
8520
8521         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8522                 u32 interval;
8523
8524                 /*
8525                  * If scan plans are not specified,
8526                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8527                  * case one scan plan will be set with the specified scan
8528                  * interval and infinite number of iterations.
8529                  */
8530                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8531                 if (!interval)
8532                         return -EINVAL;
8533
8534                 request->scan_plans[0].interval =
8535                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8536                 if (!request->scan_plans[0].interval)
8537                         return -EINVAL;
8538
8539                 if (request->scan_plans[0].interval >
8540                     wiphy->max_sched_scan_plan_interval)
8541                         request->scan_plans[0].interval =
8542                                 wiphy->max_sched_scan_plan_interval;
8543
8544                 return 0;
8545         }
8546
8547         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8548                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8549
8550                 if (WARN_ON(i >= n_plans))
8551                         return -EINVAL;
8552
8553                 err = nla_parse_nested_deprecated(plan,
8554                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8555                                                   attr, nl80211_plan_policy,
8556                                                   NULL);
8557                 if (err)
8558                         return err;
8559
8560                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8561                         return -EINVAL;
8562
8563                 request->scan_plans[i].interval =
8564                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8565                 if (!request->scan_plans[i].interval ||
8566                     request->scan_plans[i].interval >
8567                     wiphy->max_sched_scan_plan_interval)
8568                         return -EINVAL;
8569
8570                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8571                         request->scan_plans[i].iterations =
8572                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8573                         if (!request->scan_plans[i].iterations ||
8574                             (request->scan_plans[i].iterations >
8575                              wiphy->max_sched_scan_plan_iterations))
8576                                 return -EINVAL;
8577                 } else if (i < n_plans - 1) {
8578                         /*
8579                          * All scan plans but the last one must specify
8580                          * a finite number of iterations
8581                          */
8582                         return -EINVAL;
8583                 }
8584
8585                 i++;
8586         }
8587
8588         /*
8589          * The last scan plan must not specify the number of
8590          * iterations, it is supposed to run infinitely
8591          */
8592         if (request->scan_plans[n_plans - 1].iterations)
8593                 return  -EINVAL;
8594
8595         return 0;
8596 }
8597
8598 static int
8599 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8600                                        struct cfg80211_match_set *match_sets,
8601                                        struct nlattr *tb_band_rssi,
8602                                        s32 rssi_thold)
8603 {
8604         struct nlattr *attr;
8605         int i, tmp, ret = 0;
8606
8607         if (!wiphy_ext_feature_isset(wiphy,
8608                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8609                 if (tb_band_rssi)
8610                         ret = -EOPNOTSUPP;
8611                 else
8612                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8613                                 match_sets->per_band_rssi_thold[i] =
8614                                         NL80211_SCAN_RSSI_THOLD_OFF;
8615                 return ret;
8616         }
8617
8618         for (i = 0; i < NUM_NL80211_BANDS; i++)
8619                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8620
8621         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8622                 enum nl80211_band band = nla_type(attr);
8623
8624                 if (band < 0 || band >= NUM_NL80211_BANDS)
8625                         return -EINVAL;
8626
8627                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8628         }
8629
8630         return 0;
8631 }
8632
8633 static struct cfg80211_sched_scan_request *
8634 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8635                          struct nlattr **attrs, int max_match_sets)
8636 {
8637         struct cfg80211_sched_scan_request *request;
8638         struct nlattr *attr;
8639         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8640         enum nl80211_band band;
8641         size_t ie_len;
8642         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8643         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8644
8645         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8646                 n_channels = validate_scan_freqs(
8647                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8648                 if (!n_channels)
8649                         return ERR_PTR(-EINVAL);
8650         } else {
8651                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8652         }
8653
8654         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8655                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8656                                     tmp)
8657                         n_ssids++;
8658
8659         if (n_ssids > wiphy->max_sched_scan_ssids)
8660                 return ERR_PTR(-EINVAL);
8661
8662         /*
8663          * First, count the number of 'real' matchsets. Due to an issue with
8664          * the old implementation, matchsets containing only the RSSI attribute
8665          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8666          * RSSI for all matchsets, rather than their own matchset for reporting
8667          * all APs with a strong RSSI. This is needed to be compatible with
8668          * older userspace that treated a matchset with only the RSSI as the
8669          * global RSSI for all other matchsets - if there are other matchsets.
8670          */
8671         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8672                 nla_for_each_nested(attr,
8673                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8674                                     tmp) {
8675                         struct nlattr *rssi;
8676
8677                         err = nla_parse_nested_deprecated(tb,
8678                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8679                                                           attr,
8680                                                           nl80211_match_policy,
8681                                                           NULL);
8682                         if (err)
8683                                 return ERR_PTR(err);
8684
8685                         /* SSID and BSSID are mutually exclusive */
8686                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8687                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8688                                 return ERR_PTR(-EINVAL);
8689
8690                         /* add other standalone attributes here */
8691                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8692                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8693                                 n_match_sets++;
8694                                 continue;
8695                         }
8696                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8697                         if (rssi)
8698                                 default_match_rssi = nla_get_s32(rssi);
8699                 }
8700         }
8701
8702         /* However, if there's no other matchset, add the RSSI one */
8703         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8704                 n_match_sets = 1;
8705
8706         if (n_match_sets > max_match_sets)
8707                 return ERR_PTR(-EINVAL);
8708
8709         if (attrs[NL80211_ATTR_IE])
8710                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8711         else
8712                 ie_len = 0;
8713
8714         if (ie_len > wiphy->max_sched_scan_ie_len)
8715                 return ERR_PTR(-EINVAL);
8716
8717         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8718                 /*
8719                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8720                  * each scan plan already specifies its own interval
8721                  */
8722                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8723                         return ERR_PTR(-EINVAL);
8724
8725                 nla_for_each_nested(attr,
8726                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8727                         n_plans++;
8728         } else {
8729                 /*
8730                  * The scan interval attribute is kept for backward
8731                  * compatibility. If no scan plans are specified and sched scan
8732                  * interval is specified, one scan plan will be set with this
8733                  * scan interval and infinite number of iterations.
8734                  */
8735                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8736                         return ERR_PTR(-EINVAL);
8737
8738                 n_plans = 1;
8739         }
8740
8741         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8742                 return ERR_PTR(-EINVAL);
8743
8744         if (!wiphy_ext_feature_isset(
8745                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8746             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8747              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8748                 return ERR_PTR(-EINVAL);
8749
8750         request = kzalloc(sizeof(*request)
8751                         + sizeof(*request->ssids) * n_ssids
8752                         + sizeof(*request->match_sets) * n_match_sets
8753                         + sizeof(*request->scan_plans) * n_plans
8754                         + sizeof(*request->channels) * n_channels
8755                         + ie_len, GFP_KERNEL);
8756         if (!request)
8757                 return ERR_PTR(-ENOMEM);
8758
8759         if (n_ssids)
8760                 request->ssids = (void *)&request->channels[n_channels];
8761         request->n_ssids = n_ssids;
8762         if (ie_len) {
8763                 if (n_ssids)
8764                         request->ie = (void *)(request->ssids + n_ssids);
8765                 else
8766                         request->ie = (void *)(request->channels + n_channels);
8767         }
8768
8769         if (n_match_sets) {
8770                 if (request->ie)
8771                         request->match_sets = (void *)(request->ie + ie_len);
8772                 else if (n_ssids)
8773                         request->match_sets =
8774                                 (void *)(request->ssids + n_ssids);
8775                 else
8776                         request->match_sets =
8777                                 (void *)(request->channels + n_channels);
8778         }
8779         request->n_match_sets = n_match_sets;
8780
8781         if (n_match_sets)
8782                 request->scan_plans = (void *)(request->match_sets +
8783                                                n_match_sets);
8784         else if (request->ie)
8785                 request->scan_plans = (void *)(request->ie + ie_len);
8786         else if (n_ssids)
8787                 request->scan_plans = (void *)(request->ssids + n_ssids);
8788         else
8789                 request->scan_plans = (void *)(request->channels + n_channels);
8790
8791         request->n_scan_plans = n_plans;
8792
8793         i = 0;
8794         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8795                 /* user specified, bail out if channel not found */
8796                 nla_for_each_nested(attr,
8797                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8798                                     tmp) {
8799                         struct ieee80211_channel *chan;
8800
8801                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8802
8803                         if (!chan) {
8804                                 err = -EINVAL;
8805                                 goto out_free;
8806                         }
8807
8808                         /* ignore disabled channels */
8809                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8810                                 continue;
8811
8812                         request->channels[i] = chan;
8813                         i++;
8814                 }
8815         } else {
8816                 /* all channels */
8817                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8818                         int j;
8819
8820                         if (!wiphy->bands[band])
8821                                 continue;
8822                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8823                                 struct ieee80211_channel *chan;
8824
8825                                 chan = &wiphy->bands[band]->channels[j];
8826
8827                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8828                                         continue;
8829
8830                                 request->channels[i] = chan;
8831                                 i++;
8832                         }
8833                 }
8834         }
8835
8836         if (!i) {
8837                 err = -EINVAL;
8838                 goto out_free;
8839         }
8840
8841         request->n_channels = i;
8842
8843         i = 0;
8844         if (n_ssids) {
8845                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8846                                     tmp) {
8847                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8848                                 err = -EINVAL;
8849                                 goto out_free;
8850                         }
8851                         request->ssids[i].ssid_len = nla_len(attr);
8852                         memcpy(request->ssids[i].ssid, nla_data(attr),
8853                                nla_len(attr));
8854                         i++;
8855                 }
8856         }
8857
8858         i = 0;
8859         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8860                 nla_for_each_nested(attr,
8861                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8862                                     tmp) {
8863                         struct nlattr *ssid, *bssid, *rssi;
8864
8865                         err = nla_parse_nested_deprecated(tb,
8866                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8867                                                           attr,
8868                                                           nl80211_match_policy,
8869                                                           NULL);
8870                         if (err)
8871                                 goto out_free;
8872                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8873                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8874
8875                         if (!ssid && !bssid) {
8876                                 i++;
8877                                 continue;
8878                         }
8879
8880                         if (WARN_ON(i >= n_match_sets)) {
8881                                 /* this indicates a programming error,
8882                                  * the loop above should have verified
8883                                  * things properly
8884                                  */
8885                                 err = -EINVAL;
8886                                 goto out_free;
8887                         }
8888
8889                         if (ssid) {
8890                                 memcpy(request->match_sets[i].ssid.ssid,
8891                                        nla_data(ssid), nla_len(ssid));
8892                                 request->match_sets[i].ssid.ssid_len =
8893                                         nla_len(ssid);
8894                         }
8895                         if (bssid)
8896                                 memcpy(request->match_sets[i].bssid,
8897                                        nla_data(bssid), ETH_ALEN);
8898
8899                         /* special attribute - old implementation w/a */
8900                         request->match_sets[i].rssi_thold = default_match_rssi;
8901                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8902                         if (rssi)
8903                                 request->match_sets[i].rssi_thold =
8904                                         nla_get_s32(rssi);
8905
8906                         /* Parse per band RSSI attribute */
8907                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8908                                 &request->match_sets[i],
8909                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8910                                 request->match_sets[i].rssi_thold);
8911                         if (err)
8912                                 goto out_free;
8913
8914                         i++;
8915                 }
8916
8917                 /* there was no other matchset, so the RSSI one is alone */
8918                 if (i == 0 && n_match_sets)
8919                         request->match_sets[0].rssi_thold = default_match_rssi;
8920
8921                 request->min_rssi_thold = INT_MAX;
8922                 for (i = 0; i < n_match_sets; i++)
8923                         request->min_rssi_thold =
8924                                 min(request->match_sets[i].rssi_thold,
8925                                     request->min_rssi_thold);
8926         } else {
8927                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8928         }
8929
8930         if (ie_len) {
8931                 request->ie_len = ie_len;
8932                 memcpy((void *)request->ie,
8933                        nla_data(attrs[NL80211_ATTR_IE]),
8934                        request->ie_len);
8935         }
8936
8937         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8938         if (err)
8939                 goto out_free;
8940
8941         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8942                 request->delay =
8943                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8944
8945         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8946                 request->relative_rssi = nla_get_s8(
8947                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8948                 request->relative_rssi_set = true;
8949         }
8950
8951         if (request->relative_rssi_set &&
8952             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8953                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8954
8955                 rssi_adjust = nla_data(
8956                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8957                 request->rssi_adjust.band = rssi_adjust->band;
8958                 request->rssi_adjust.delta = rssi_adjust->delta;
8959                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8960                         err = -EINVAL;
8961                         goto out_free;
8962                 }
8963         }
8964
8965         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8966         if (err)
8967                 goto out_free;
8968
8969         request->scan_start = jiffies;
8970
8971         return request;
8972
8973 out_free:
8974         kfree(request);
8975         return ERR_PTR(err);
8976 }
8977
8978 static int nl80211_start_sched_scan(struct sk_buff *skb,
8979                                     struct genl_info *info)
8980 {
8981         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8982         struct net_device *dev = info->user_ptr[1];
8983         struct wireless_dev *wdev = dev->ieee80211_ptr;
8984         struct cfg80211_sched_scan_request *sched_scan_req;
8985         bool want_multi;
8986         int err;
8987
8988         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8989                 return -EOPNOTSUPP;
8990
8991         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8992         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8993         if (err)
8994                 return err;
8995
8996         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8997                                                   info->attrs,
8998                                                   rdev->wiphy.max_match_sets);
8999
9000         err = PTR_ERR_OR_ZERO(sched_scan_req);
9001         if (err)
9002                 goto out_err;
9003
9004         /* leave request id zero for legacy request
9005          * or if driver does not support multi-scheduled scan
9006          */
9007         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
9008                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
9009
9010         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
9011         if (err)
9012                 goto out_free;
9013
9014         sched_scan_req->dev = dev;
9015         sched_scan_req->wiphy = &rdev->wiphy;
9016
9017         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9018                 sched_scan_req->owner_nlportid = info->snd_portid;
9019
9020         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9021
9022         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9023         return 0;
9024
9025 out_free:
9026         kfree(sched_scan_req);
9027 out_err:
9028         return err;
9029 }
9030
9031 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9032                                    struct genl_info *info)
9033 {
9034         struct cfg80211_sched_scan_request *req;
9035         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9036         u64 cookie;
9037
9038         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9039                 return -EOPNOTSUPP;
9040
9041         if (info->attrs[NL80211_ATTR_COOKIE]) {
9042                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9043                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9044         }
9045
9046         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9047                                      struct cfg80211_sched_scan_request,
9048                                      list);
9049         if (!req || req->reqid ||
9050             (req->owner_nlportid &&
9051              req->owner_nlportid != info->snd_portid))
9052                 return -ENOENT;
9053
9054         return cfg80211_stop_sched_scan_req(rdev, req, false);
9055 }
9056
9057 static int nl80211_start_radar_detection(struct sk_buff *skb,
9058                                          struct genl_info *info)
9059 {
9060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9061         struct net_device *dev = info->user_ptr[1];
9062         struct wireless_dev *wdev = dev->ieee80211_ptr;
9063         struct wiphy *wiphy = wdev->wiphy;
9064         struct cfg80211_chan_def chandef;
9065         enum nl80211_dfs_regions dfs_region;
9066         unsigned int cac_time_ms;
9067         int err;
9068
9069         dfs_region = reg_get_dfs_region(wiphy);
9070         if (dfs_region == NL80211_DFS_UNSET)
9071                 return -EINVAL;
9072
9073         err = nl80211_parse_chandef(rdev, info, &chandef);
9074         if (err)
9075                 return err;
9076
9077         if (netif_carrier_ok(dev))
9078                 return -EBUSY;
9079
9080         if (wdev->cac_started)
9081                 return -EBUSY;
9082
9083         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9084         if (err < 0)
9085                 return err;
9086
9087         if (err == 0)
9088                 return -EINVAL;
9089
9090         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
9091                 return -EINVAL;
9092
9093         /* CAC start is offloaded to HW and can't be started manually */
9094         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
9095                 return -EOPNOTSUPP;
9096
9097         if (!rdev->ops->start_radar_detection)
9098                 return -EOPNOTSUPP;
9099
9100         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9101         if (WARN_ON(!cac_time_ms))
9102                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9103
9104         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9105         if (!err) {
9106                 wdev->chandef = chandef;
9107                 wdev->cac_started = true;
9108                 wdev->cac_start_time = jiffies;
9109                 wdev->cac_time_ms = cac_time_ms;
9110         }
9111         return err;
9112 }
9113
9114 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9115                                           struct genl_info *info)
9116 {
9117         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9118         struct net_device *dev = info->user_ptr[1];
9119         struct wireless_dev *wdev = dev->ieee80211_ptr;
9120         struct wiphy *wiphy = wdev->wiphy;
9121         struct cfg80211_chan_def chandef;
9122         enum nl80211_dfs_regions dfs_region;
9123         int err;
9124
9125         dfs_region = reg_get_dfs_region(wiphy);
9126         if (dfs_region == NL80211_DFS_UNSET) {
9127                 GENL_SET_ERR_MSG(info,
9128                                  "DFS Region is not set. Unexpected Radar indication");
9129                 return -EINVAL;
9130         }
9131
9132         err = nl80211_parse_chandef(rdev, info, &chandef);
9133         if (err) {
9134                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9135                 return err;
9136         }
9137
9138         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9139         if (err < 0) {
9140                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9141                 return err;
9142         }
9143
9144         if (err == 0) {
9145                 GENL_SET_ERR_MSG(info,
9146                                  "Unexpected Radar indication for chandef/iftype");
9147                 return -EINVAL;
9148         }
9149
9150         /* Do not process this notification if radar is already detected
9151          * by kernel on this channel, and return success.
9152          */
9153         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9154                 return 0;
9155
9156         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9157
9158         cfg80211_sched_dfs_chan_update(rdev);
9159
9160         rdev->radar_chandef = chandef;
9161
9162         /* Propagate this notification to other radios as well */
9163         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9164
9165         return 0;
9166 }
9167
9168 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9169 {
9170         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9171         struct net_device *dev = info->user_ptr[1];
9172         struct wireless_dev *wdev = dev->ieee80211_ptr;
9173         struct cfg80211_csa_settings params;
9174         struct nlattr **csa_attrs = NULL;
9175         int err;
9176         bool need_new_beacon = false;
9177         bool need_handle_dfs_flag = true;
9178         int len, i;
9179         u32 cs_count;
9180
9181         if (!rdev->ops->channel_switch ||
9182             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9183                 return -EOPNOTSUPP;
9184
9185         switch (dev->ieee80211_ptr->iftype) {
9186         case NL80211_IFTYPE_AP:
9187         case NL80211_IFTYPE_P2P_GO:
9188                 need_new_beacon = true;
9189                 /* For all modes except AP the handle_dfs flag needs to be
9190                  * supplied to tell the kernel that userspace will handle radar
9191                  * events when they happen. Otherwise a switch to a channel
9192                  * requiring DFS will be rejected.
9193                  */
9194                 need_handle_dfs_flag = false;
9195
9196                 /* useless if AP is not running */
9197                 if (!wdev->beacon_interval)
9198                         return -ENOTCONN;
9199                 break;
9200         case NL80211_IFTYPE_ADHOC:
9201                 if (!wdev->ssid_len)
9202                         return -ENOTCONN;
9203                 break;
9204         case NL80211_IFTYPE_MESH_POINT:
9205                 if (!wdev->mesh_id_len)
9206                         return -ENOTCONN;
9207                 break;
9208         default:
9209                 return -EOPNOTSUPP;
9210         }
9211
9212         memset(&params, 0, sizeof(params));
9213         params.beacon_csa.ftm_responder = -1;
9214
9215         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9216             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9217                 return -EINVAL;
9218
9219         /* only important for AP, IBSS and mesh create IEs internally */
9220         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9221                 return -EINVAL;
9222
9223         /* Even though the attribute is u32, the specification says
9224          * u8, so let's make sure we don't overflow.
9225          */
9226         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9227         if (cs_count > 255)
9228                 return -EINVAL;
9229
9230         params.count = cs_count;
9231
9232         if (!need_new_beacon)
9233                 goto skip_beacons;
9234
9235         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9236         if (err)
9237                 return err;
9238
9239         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9240                             GFP_KERNEL);
9241         if (!csa_attrs)
9242                 return -ENOMEM;
9243
9244         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9245                                           info->attrs[NL80211_ATTR_CSA_IES],
9246                                           nl80211_policy, info->extack);
9247         if (err)
9248                 goto free;
9249
9250         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9251         if (err)
9252                 goto free;
9253
9254         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9255                 err = -EINVAL;
9256                 goto free;
9257         }
9258
9259         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9260         if (!len || (len % sizeof(u16))) {
9261                 err = -EINVAL;
9262                 goto free;
9263         }
9264
9265         params.n_counter_offsets_beacon = len / sizeof(u16);
9266         if (rdev->wiphy.max_num_csa_counters &&
9267             (params.n_counter_offsets_beacon >
9268              rdev->wiphy.max_num_csa_counters)) {
9269                 err = -EINVAL;
9270                 goto free;
9271         }
9272
9273         params.counter_offsets_beacon =
9274                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9275
9276         /* sanity checks - counters should fit and be the same */
9277         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9278                 u16 offset = params.counter_offsets_beacon[i];
9279
9280                 if (offset >= params.beacon_csa.tail_len) {
9281                         err = -EINVAL;
9282                         goto free;
9283                 }
9284
9285                 if (params.beacon_csa.tail[offset] != params.count) {
9286                         err = -EINVAL;
9287                         goto free;
9288                 }
9289         }
9290
9291         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9292                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9293                 if (!len || (len % sizeof(u16))) {
9294                         err = -EINVAL;
9295                         goto free;
9296                 }
9297
9298                 params.n_counter_offsets_presp = len / sizeof(u16);
9299                 if (rdev->wiphy.max_num_csa_counters &&
9300                     (params.n_counter_offsets_presp >
9301                      rdev->wiphy.max_num_csa_counters)) {
9302                         err = -EINVAL;
9303                         goto free;
9304                 }
9305
9306                 params.counter_offsets_presp =
9307                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9308
9309                 /* sanity checks - counters should fit and be the same */
9310                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9311                         u16 offset = params.counter_offsets_presp[i];
9312
9313                         if (offset >= params.beacon_csa.probe_resp_len) {
9314                                 err = -EINVAL;
9315                                 goto free;
9316                         }
9317
9318                         if (params.beacon_csa.probe_resp[offset] !=
9319                             params.count) {
9320                                 err = -EINVAL;
9321                                 goto free;
9322                         }
9323                 }
9324         }
9325
9326 skip_beacons:
9327         err = nl80211_parse_chandef(rdev, info, &params.chandef);
9328         if (err)
9329                 goto free;
9330
9331         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9332                                            wdev->iftype)) {
9333                 err = -EINVAL;
9334                 goto free;
9335         }
9336
9337         err = cfg80211_chandef_dfs_required(wdev->wiphy,
9338                                             &params.chandef,
9339                                             wdev->iftype);
9340         if (err < 0)
9341                 goto free;
9342
9343         if (err > 0) {
9344                 params.radar_required = true;
9345                 if (need_handle_dfs_flag &&
9346                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9347                         err = -EINVAL;
9348                         goto free;
9349                 }
9350         }
9351
9352         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9353                 params.block_tx = true;
9354
9355         wdev_lock(wdev);
9356         err = rdev_channel_switch(rdev, dev, &params);
9357         wdev_unlock(wdev);
9358
9359 free:
9360         kfree(csa_attrs);
9361         return err;
9362 }
9363
9364 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9365                             u32 seq, int flags,
9366                             struct cfg80211_registered_device *rdev,
9367                             struct wireless_dev *wdev,
9368                             struct cfg80211_internal_bss *intbss)
9369 {
9370         struct cfg80211_bss *res = &intbss->pub;
9371         const struct cfg80211_bss_ies *ies;
9372         void *hdr;
9373         struct nlattr *bss;
9374
9375         ASSERT_WDEV_LOCK(wdev);
9376
9377         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9378                              NL80211_CMD_NEW_SCAN_RESULTS);
9379         if (!hdr)
9380                 return -1;
9381
9382         genl_dump_check_consistent(cb, hdr);
9383
9384         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9385                 goto nla_put_failure;
9386         if (wdev->netdev &&
9387             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9388                 goto nla_put_failure;
9389         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9390                               NL80211_ATTR_PAD))
9391                 goto nla_put_failure;
9392
9393         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9394         if (!bss)
9395                 goto nla_put_failure;
9396         if ((!is_zero_ether_addr(res->bssid) &&
9397              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9398                 goto nla_put_failure;
9399
9400         rcu_read_lock();
9401         /* indicate whether we have probe response data or not */
9402         if (rcu_access_pointer(res->proberesp_ies) &&
9403             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9404                 goto fail_unlock_rcu;
9405
9406         /* this pointer prefers to be pointed to probe response data
9407          * but is always valid
9408          */
9409         ies = rcu_dereference(res->ies);
9410         if (ies) {
9411                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9412                                       NL80211_BSS_PAD))
9413                         goto fail_unlock_rcu;
9414                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9415                                         ies->len, ies->data))
9416                         goto fail_unlock_rcu;
9417         }
9418
9419         /* and this pointer is always (unless driver didn't know) beacon data */
9420         ies = rcu_dereference(res->beacon_ies);
9421         if (ies && ies->from_beacon) {
9422                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9423                                       NL80211_BSS_PAD))
9424                         goto fail_unlock_rcu;
9425                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9426                                         ies->len, ies->data))
9427                         goto fail_unlock_rcu;
9428         }
9429         rcu_read_unlock();
9430
9431         if (res->beacon_interval &&
9432             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9433                 goto nla_put_failure;
9434         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9435             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9436             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9437                         res->channel->freq_offset) ||
9438             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9439             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9440                         jiffies_to_msecs(jiffies - intbss->ts)))
9441                 goto nla_put_failure;
9442
9443         if (intbss->parent_tsf &&
9444             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9445                                intbss->parent_tsf, NL80211_BSS_PAD) ||
9446              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9447                      intbss->parent_bssid)))
9448                 goto nla_put_failure;
9449
9450         if (intbss->ts_boottime &&
9451             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9452                               intbss->ts_boottime, NL80211_BSS_PAD))
9453                 goto nla_put_failure;
9454
9455         if (!nl80211_put_signal(msg, intbss->pub.chains,
9456                                 intbss->pub.chain_signal,
9457                                 NL80211_BSS_CHAIN_SIGNAL))
9458                 goto nla_put_failure;
9459
9460         switch (rdev->wiphy.signal_type) {
9461         case CFG80211_SIGNAL_TYPE_MBM:
9462                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9463                         goto nla_put_failure;
9464                 break;
9465         case CFG80211_SIGNAL_TYPE_UNSPEC:
9466                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9467                         goto nla_put_failure;
9468                 break;
9469         default:
9470                 break;
9471         }
9472
9473         switch (wdev->iftype) {
9474         case NL80211_IFTYPE_P2P_CLIENT:
9475         case NL80211_IFTYPE_STATION:
9476                 if (intbss == wdev->current_bss &&
9477                     nla_put_u32(msg, NL80211_BSS_STATUS,
9478                                 NL80211_BSS_STATUS_ASSOCIATED))
9479                         goto nla_put_failure;
9480                 break;
9481         case NL80211_IFTYPE_ADHOC:
9482                 if (intbss == wdev->current_bss &&
9483                     nla_put_u32(msg, NL80211_BSS_STATUS,
9484                                 NL80211_BSS_STATUS_IBSS_JOINED))
9485                         goto nla_put_failure;
9486                 break;
9487         default:
9488                 break;
9489         }
9490
9491         nla_nest_end(msg, bss);
9492
9493         genlmsg_end(msg, hdr);
9494         return 0;
9495
9496  fail_unlock_rcu:
9497         rcu_read_unlock();
9498  nla_put_failure:
9499         genlmsg_cancel(msg, hdr);
9500         return -EMSGSIZE;
9501 }
9502
9503 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9504 {
9505         struct cfg80211_registered_device *rdev;
9506         struct cfg80211_internal_bss *scan;
9507         struct wireless_dev *wdev;
9508         int start = cb->args[2], idx = 0;
9509         int err;
9510
9511         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9512         if (err)
9513                 return err;
9514         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9515         __acquire(&rdev->wiphy.mtx);
9516
9517         wdev_lock(wdev);
9518         spin_lock_bh(&rdev->bss_lock);
9519
9520         /*
9521          * dump_scan will be called multiple times to break up the scan results
9522          * into multiple messages.  It is unlikely that any more bss-es will be
9523          * expired after the first call, so only call only call this on the
9524          * first dump_scan invocation.
9525          */
9526         if (start == 0)
9527                 cfg80211_bss_expire(rdev);
9528
9529         cb->seq = rdev->bss_generation;
9530
9531         list_for_each_entry(scan, &rdev->bss_list, list) {
9532                 if (++idx <= start)
9533                         continue;
9534                 if (nl80211_send_bss(skb, cb,
9535                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9536                                 rdev, wdev, scan) < 0) {
9537                         idx--;
9538                         break;
9539                 }
9540         }
9541
9542         spin_unlock_bh(&rdev->bss_lock);
9543         wdev_unlock(wdev);
9544
9545         cb->args[2] = idx;
9546         wiphy_unlock(&rdev->wiphy);
9547
9548         return skb->len;
9549 }
9550
9551 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9552                                int flags, struct net_device *dev,
9553                                bool allow_radio_stats,
9554                                struct survey_info *survey)
9555 {
9556         void *hdr;
9557         struct nlattr *infoattr;
9558
9559         /* skip radio stats if userspace didn't request them */
9560         if (!survey->channel && !allow_radio_stats)
9561                 return 0;
9562
9563         hdr = nl80211hdr_put(msg, portid, seq, flags,
9564                              NL80211_CMD_NEW_SURVEY_RESULTS);
9565         if (!hdr)
9566                 return -ENOMEM;
9567
9568         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9569                 goto nla_put_failure;
9570
9571         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9572         if (!infoattr)
9573                 goto nla_put_failure;
9574
9575         if (survey->channel &&
9576             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9577                         survey->channel->center_freq))
9578                 goto nla_put_failure;
9579
9580         if (survey->channel && survey->channel->freq_offset &&
9581             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9582                         survey->channel->freq_offset))
9583                 goto nla_put_failure;
9584
9585         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9586             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9587                 goto nla_put_failure;
9588         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9589             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9590                 goto nla_put_failure;
9591         if ((survey->filled & SURVEY_INFO_TIME) &&
9592             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9593                         survey->time, NL80211_SURVEY_INFO_PAD))
9594                 goto nla_put_failure;
9595         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9596             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9597                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9598                 goto nla_put_failure;
9599         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9600             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9601                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9602                 goto nla_put_failure;
9603         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9604             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9605                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9606                 goto nla_put_failure;
9607         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9608             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9609                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9610                 goto nla_put_failure;
9611         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9612             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9613                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9614                 goto nla_put_failure;
9615         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9616             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9617                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9618                 goto nla_put_failure;
9619
9620         nla_nest_end(msg, infoattr);
9621
9622         genlmsg_end(msg, hdr);
9623         return 0;
9624
9625  nla_put_failure:
9626         genlmsg_cancel(msg, hdr);
9627         return -EMSGSIZE;
9628 }
9629
9630 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9631 {
9632         struct nlattr **attrbuf;
9633         struct survey_info survey;
9634         struct cfg80211_registered_device *rdev;
9635         struct wireless_dev *wdev;
9636         int survey_idx = cb->args[2];
9637         int res;
9638         bool radio_stats;
9639
9640         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9641         if (!attrbuf)
9642                 return -ENOMEM;
9643
9644         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9645         if (res) {
9646                 kfree(attrbuf);
9647                 return res;
9648         }
9649         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9650         __acquire(&rdev->wiphy.mtx);
9651
9652         /* prepare_wdev_dump parsed the attributes */
9653         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9654
9655         if (!wdev->netdev) {
9656                 res = -EINVAL;
9657                 goto out_err;
9658         }
9659
9660         if (!rdev->ops->dump_survey) {
9661                 res = -EOPNOTSUPP;
9662                 goto out_err;
9663         }
9664
9665         while (1) {
9666                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9667                 if (res == -ENOENT)
9668                         break;
9669                 if (res)
9670                         goto out_err;
9671
9672                 /* don't send disabled channels, but do send non-channel data */
9673                 if (survey.channel &&
9674                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9675                         survey_idx++;
9676                         continue;
9677                 }
9678
9679                 if (nl80211_send_survey(skb,
9680                                 NETLINK_CB(cb->skb).portid,
9681                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9682                                 wdev->netdev, radio_stats, &survey) < 0)
9683                         goto out;
9684                 survey_idx++;
9685         }
9686
9687  out:
9688         cb->args[2] = survey_idx;
9689         res = skb->len;
9690  out_err:
9691         kfree(attrbuf);
9692         wiphy_unlock(&rdev->wiphy);
9693         return res;
9694 }
9695
9696 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9697 {
9698         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9699                                   NL80211_WPA_VERSION_2 |
9700                                   NL80211_WPA_VERSION_3));
9701 }
9702
9703 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9704 {
9705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9706         struct net_device *dev = info->user_ptr[1];
9707         struct ieee80211_channel *chan;
9708         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9709         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9710         enum nl80211_auth_type auth_type;
9711         struct key_parse key;
9712         bool local_state_change;
9713         u32 freq;
9714
9715         if (!info->attrs[NL80211_ATTR_MAC])
9716                 return -EINVAL;
9717
9718         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9719                 return -EINVAL;
9720
9721         if (!info->attrs[NL80211_ATTR_SSID])
9722                 return -EINVAL;
9723
9724         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9725                 return -EINVAL;
9726
9727         err = nl80211_parse_key(info, &key);
9728         if (err)
9729                 return err;
9730
9731         if (key.idx >= 0) {
9732                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9733                         return -EINVAL;
9734                 if (!key.p.key || !key.p.key_len)
9735                         return -EINVAL;
9736                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9737                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9738                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9739                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9740                         return -EINVAL;
9741                 if (key.idx > 3)
9742                         return -EINVAL;
9743         } else {
9744                 key.p.key_len = 0;
9745                 key.p.key = NULL;
9746         }
9747
9748         if (key.idx >= 0) {
9749                 int i;
9750                 bool ok = false;
9751
9752                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9753                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9754                                 ok = true;
9755                                 break;
9756                         }
9757                 }
9758                 if (!ok)
9759                         return -EINVAL;
9760         }
9761
9762         if (!rdev->ops->auth)
9763                 return -EOPNOTSUPP;
9764
9765         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9766             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9767                 return -EOPNOTSUPP;
9768
9769         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9770         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9771         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9772                 freq +=
9773                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9774
9775         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9776         if (!chan)
9777                 return -EINVAL;
9778
9779         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9780         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9781
9782         if (info->attrs[NL80211_ATTR_IE]) {
9783                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9784                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9785         }
9786
9787         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9788         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9789                 return -EINVAL;
9790
9791         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9792              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9793              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9794              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9795             !info->attrs[NL80211_ATTR_AUTH_DATA])
9796                 return -EINVAL;
9797
9798         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9799                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9800                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9801                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9802                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9803                         return -EINVAL;
9804                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9805                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9806         }
9807
9808         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9809
9810         /*
9811          * Since we no longer track auth state, ignore
9812          * requests to only change local state.
9813          */
9814         if (local_state_change)
9815                 return 0;
9816
9817         wdev_lock(dev->ieee80211_ptr);
9818         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9819                                  ssid, ssid_len, ie, ie_len,
9820                                  key.p.key, key.p.key_len, key.idx,
9821                                  auth_data, auth_data_len);
9822         wdev_unlock(dev->ieee80211_ptr);
9823         return err;
9824 }
9825
9826 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9827                                      struct genl_info *info)
9828 {
9829         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9830                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9831                 return -EINVAL;
9832         }
9833
9834         if (!rdev->ops->tx_control_port ||
9835             !wiphy_ext_feature_isset(&rdev->wiphy,
9836                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9837                 return -EOPNOTSUPP;
9838
9839         return 0;
9840 }
9841
9842 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9843                                    struct genl_info *info,
9844                                    struct cfg80211_crypto_settings *settings,
9845                                    int cipher_limit)
9846 {
9847         memset(settings, 0, sizeof(*settings));
9848
9849         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9850
9851         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9852                 u16 proto;
9853
9854                 proto = nla_get_u16(
9855                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9856                 settings->control_port_ethertype = cpu_to_be16(proto);
9857                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9858                     proto != ETH_P_PAE)
9859                         return -EINVAL;
9860                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9861                         settings->control_port_no_encrypt = true;
9862         } else
9863                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9864
9865         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9866                 int r = validate_pae_over_nl80211(rdev, info);
9867
9868                 if (r < 0)
9869                         return r;
9870
9871                 settings->control_port_over_nl80211 = true;
9872
9873                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9874                         settings->control_port_no_preauth = true;
9875         }
9876
9877         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9878                 void *data;
9879                 int len, i;
9880
9881                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9882                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9883                 settings->n_ciphers_pairwise = len / sizeof(u32);
9884
9885                 if (len % sizeof(u32))
9886                         return -EINVAL;
9887
9888                 if (settings->n_ciphers_pairwise > cipher_limit)
9889                         return -EINVAL;
9890
9891                 memcpy(settings->ciphers_pairwise, data, len);
9892
9893                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9894                         if (!cfg80211_supported_cipher_suite(
9895                                         &rdev->wiphy,
9896                                         settings->ciphers_pairwise[i]))
9897                                 return -EINVAL;
9898         }
9899
9900         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9901                 settings->cipher_group =
9902                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9903                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9904                                                      settings->cipher_group))
9905                         return -EINVAL;
9906         }
9907
9908         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9909                 settings->wpa_versions =
9910                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9911                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9912                         return -EINVAL;
9913         }
9914
9915         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9916                 void *data;
9917                 int len;
9918
9919                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9920                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9921                 settings->n_akm_suites = len / sizeof(u32);
9922
9923                 if (len % sizeof(u32))
9924                         return -EINVAL;
9925
9926                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9927                         return -EINVAL;
9928
9929                 memcpy(settings->akm_suites, data, len);
9930         }
9931
9932         if (info->attrs[NL80211_ATTR_PMK]) {
9933                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9934                         return -EINVAL;
9935                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9936                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9937                     !wiphy_ext_feature_isset(&rdev->wiphy,
9938                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9939                         return -EINVAL;
9940                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9941         }
9942
9943         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9944                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9945                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9946                     !wiphy_ext_feature_isset(&rdev->wiphy,
9947                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9948                         return -EINVAL;
9949                 settings->sae_pwd =
9950                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9951                 settings->sae_pwd_len =
9952                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9953         }
9954
9955         if (info->attrs[NL80211_ATTR_SAE_PWE])
9956                 settings->sae_pwe =
9957                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
9958         else
9959                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
9960
9961         return 0;
9962 }
9963
9964 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9965 {
9966         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9967         struct net_device *dev = info->user_ptr[1];
9968         struct ieee80211_channel *chan;
9969         struct cfg80211_assoc_request req = {};
9970         const u8 *bssid, *ssid;
9971         int err, ssid_len = 0;
9972         u32 freq;
9973
9974         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9975             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9976                 return -EPERM;
9977
9978         if (!info->attrs[NL80211_ATTR_MAC] ||
9979             !info->attrs[NL80211_ATTR_SSID] ||
9980             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9981                 return -EINVAL;
9982
9983         if (!rdev->ops->assoc)
9984                 return -EOPNOTSUPP;
9985
9986         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9987             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9988                 return -EOPNOTSUPP;
9989
9990         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9991
9992         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9993         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9994                 freq +=
9995                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9996         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9997         if (!chan)
9998                 return -EINVAL;
9999
10000         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10001         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10002
10003         if (info->attrs[NL80211_ATTR_IE]) {
10004                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10005                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10006         }
10007
10008         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10009                 enum nl80211_mfp mfp =
10010                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10011                 if (mfp == NL80211_MFP_REQUIRED)
10012                         req.use_mfp = true;
10013                 else if (mfp != NL80211_MFP_NO)
10014                         return -EINVAL;
10015         }
10016
10017         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10018                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10019
10020         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10021                 req.flags |= ASSOC_REQ_DISABLE_HT;
10022
10023         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10024                 memcpy(&req.ht_capa_mask,
10025                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10026                        sizeof(req.ht_capa_mask));
10027
10028         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10029                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10030                         return -EINVAL;
10031                 memcpy(&req.ht_capa,
10032                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10033                        sizeof(req.ht_capa));
10034         }
10035
10036         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10037                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10038
10039         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10040                 req.flags |= ASSOC_REQ_DISABLE_HE;
10041
10042         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10043                 memcpy(&req.vht_capa_mask,
10044                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10045                        sizeof(req.vht_capa_mask));
10046
10047         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10048                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10049                         return -EINVAL;
10050                 memcpy(&req.vht_capa,
10051                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10052                        sizeof(req.vht_capa));
10053         }
10054
10055         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10056                 if (!((rdev->wiphy.features &
10057                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10058                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10059                     !wiphy_ext_feature_isset(&rdev->wiphy,
10060                                              NL80211_EXT_FEATURE_RRM))
10061                         return -EINVAL;
10062                 req.flags |= ASSOC_REQ_USE_RRM;
10063         }
10064
10065         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10066                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10067                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10068                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10069                         return -EINVAL;
10070                 req.fils_nonces =
10071                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10072         }
10073
10074         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10075                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10076                         return -EINVAL;
10077                 memcpy(&req.s1g_capa_mask,
10078                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10079                        sizeof(req.s1g_capa_mask));
10080         }
10081
10082         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10083                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10084                         return -EINVAL;
10085                 memcpy(&req.s1g_capa,
10086                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10087                        sizeof(req.s1g_capa));
10088         }
10089
10090         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10091         if (!err) {
10092                 wdev_lock(dev->ieee80211_ptr);
10093
10094                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
10095                                           ssid, ssid_len, &req);
10096
10097                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10098                         dev->ieee80211_ptr->conn_owner_nlportid =
10099                                 info->snd_portid;
10100                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10101                                bssid, ETH_ALEN);
10102                 }
10103
10104                 wdev_unlock(dev->ieee80211_ptr);
10105         }
10106
10107         return err;
10108 }
10109
10110 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10111 {
10112         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10113         struct net_device *dev = info->user_ptr[1];
10114         const u8 *ie = NULL, *bssid;
10115         int ie_len = 0, err;
10116         u16 reason_code;
10117         bool local_state_change;
10118
10119         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10120             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10121                 return -EPERM;
10122
10123         if (!info->attrs[NL80211_ATTR_MAC])
10124                 return -EINVAL;
10125
10126         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10127                 return -EINVAL;
10128
10129         if (!rdev->ops->deauth)
10130                 return -EOPNOTSUPP;
10131
10132         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10133             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10134                 return -EOPNOTSUPP;
10135
10136         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10137
10138         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10139         if (reason_code == 0) {
10140                 /* Reason Code 0 is reserved */
10141                 return -EINVAL;
10142         }
10143
10144         if (info->attrs[NL80211_ATTR_IE]) {
10145                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10146                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10147         }
10148
10149         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10150
10151         wdev_lock(dev->ieee80211_ptr);
10152         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
10153                                    local_state_change);
10154         wdev_unlock(dev->ieee80211_ptr);
10155         return err;
10156 }
10157
10158 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
10159 {
10160         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10161         struct net_device *dev = info->user_ptr[1];
10162         const u8 *ie = NULL, *bssid;
10163         int ie_len = 0, err;
10164         u16 reason_code;
10165         bool local_state_change;
10166
10167         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10168             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10169                 return -EPERM;
10170
10171         if (!info->attrs[NL80211_ATTR_MAC])
10172                 return -EINVAL;
10173
10174         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10175                 return -EINVAL;
10176
10177         if (!rdev->ops->disassoc)
10178                 return -EOPNOTSUPP;
10179
10180         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10181             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10182                 return -EOPNOTSUPP;
10183
10184         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10185
10186         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10187         if (reason_code == 0) {
10188                 /* Reason Code 0 is reserved */
10189                 return -EINVAL;
10190         }
10191
10192         if (info->attrs[NL80211_ATTR_IE]) {
10193                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10194                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10195         }
10196
10197         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10198
10199         wdev_lock(dev->ieee80211_ptr);
10200         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
10201                                      local_state_change);
10202         wdev_unlock(dev->ieee80211_ptr);
10203         return err;
10204 }
10205
10206 static bool
10207 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
10208                          int mcast_rate[NUM_NL80211_BANDS],
10209                          int rateval)
10210 {
10211         struct wiphy *wiphy = &rdev->wiphy;
10212         bool found = false;
10213         int band, i;
10214
10215         for (band = 0; band < NUM_NL80211_BANDS; band++) {
10216                 struct ieee80211_supported_band *sband;
10217
10218                 sband = wiphy->bands[band];
10219                 if (!sband)
10220                         continue;
10221
10222                 for (i = 0; i < sband->n_bitrates; i++) {
10223                         if (sband->bitrates[i].bitrate == rateval) {
10224                                 mcast_rate[band] = i + 1;
10225                                 found = true;
10226                                 break;
10227                         }
10228                 }
10229         }
10230
10231         return found;
10232 }
10233
10234 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10235 {
10236         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10237         struct net_device *dev = info->user_ptr[1];
10238         struct cfg80211_ibss_params ibss;
10239         struct wiphy *wiphy;
10240         struct cfg80211_cached_keys *connkeys = NULL;
10241         int err;
10242
10243         memset(&ibss, 0, sizeof(ibss));
10244
10245         if (!info->attrs[NL80211_ATTR_SSID] ||
10246             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10247                 return -EINVAL;
10248
10249         ibss.beacon_interval = 100;
10250
10251         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10252                 ibss.beacon_interval =
10253                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10254
10255         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10256                                            ibss.beacon_interval);
10257         if (err)
10258                 return err;
10259
10260         if (!rdev->ops->join_ibss)
10261                 return -EOPNOTSUPP;
10262
10263         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10264                 return -EOPNOTSUPP;
10265
10266         wiphy = &rdev->wiphy;
10267
10268         if (info->attrs[NL80211_ATTR_MAC]) {
10269                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10270
10271                 if (!is_valid_ether_addr(ibss.bssid))
10272                         return -EINVAL;
10273         }
10274         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10275         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10276
10277         if (info->attrs[NL80211_ATTR_IE]) {
10278                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10279                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10280         }
10281
10282         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10283         if (err)
10284                 return err;
10285
10286         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10287                                      NL80211_IFTYPE_ADHOC))
10288                 return -EINVAL;
10289
10290         switch (ibss.chandef.width) {
10291         case NL80211_CHAN_WIDTH_5:
10292         case NL80211_CHAN_WIDTH_10:
10293         case NL80211_CHAN_WIDTH_20_NOHT:
10294                 break;
10295         case NL80211_CHAN_WIDTH_20:
10296         case NL80211_CHAN_WIDTH_40:
10297                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10298                         return -EINVAL;
10299                 break;
10300         case NL80211_CHAN_WIDTH_80:
10301         case NL80211_CHAN_WIDTH_80P80:
10302         case NL80211_CHAN_WIDTH_160:
10303                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10304                         return -EINVAL;
10305                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10306                                              NL80211_EXT_FEATURE_VHT_IBSS))
10307                         return -EINVAL;
10308                 break;
10309         default:
10310                 return -EINVAL;
10311         }
10312
10313         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10314         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10315
10316         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10317                 u8 *rates =
10318                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10319                 int n_rates =
10320                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10321                 struct ieee80211_supported_band *sband =
10322                         wiphy->bands[ibss.chandef.chan->band];
10323
10324                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10325                                              &ibss.basic_rates);
10326                 if (err)
10327                         return err;
10328         }
10329
10330         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10331                 memcpy(&ibss.ht_capa_mask,
10332                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10333                        sizeof(ibss.ht_capa_mask));
10334
10335         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10336                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10337                         return -EINVAL;
10338                 memcpy(&ibss.ht_capa,
10339                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10340                        sizeof(ibss.ht_capa));
10341         }
10342
10343         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10344             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10345                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10346                 return -EINVAL;
10347
10348         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10349                 bool no_ht = false;
10350
10351                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10352                 if (IS_ERR(connkeys))
10353                         return PTR_ERR(connkeys);
10354
10355                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10356                     no_ht) {
10357                         kfree_sensitive(connkeys);
10358                         return -EINVAL;
10359                 }
10360         }
10361
10362         ibss.control_port =
10363                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10364
10365         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10366                 int r = validate_pae_over_nl80211(rdev, info);
10367
10368                 if (r < 0) {
10369                         kfree_sensitive(connkeys);
10370                         return r;
10371                 }
10372
10373                 ibss.control_port_over_nl80211 = true;
10374         }
10375
10376         ibss.userspace_handles_dfs =
10377                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10378
10379         wdev_lock(dev->ieee80211_ptr);
10380         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10381         if (err)
10382                 kfree_sensitive(connkeys);
10383         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10384                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10385         wdev_unlock(dev->ieee80211_ptr);
10386
10387         return err;
10388 }
10389
10390 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10391 {
10392         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10393         struct net_device *dev = info->user_ptr[1];
10394
10395         if (!rdev->ops->leave_ibss)
10396                 return -EOPNOTSUPP;
10397
10398         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10399                 return -EOPNOTSUPP;
10400
10401         return cfg80211_leave_ibss(rdev, dev, false);
10402 }
10403
10404 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10405 {
10406         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10407         struct net_device *dev = info->user_ptr[1];
10408         int mcast_rate[NUM_NL80211_BANDS];
10409         u32 nla_rate;
10410         int err;
10411
10412         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10413             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10414             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10415                 return -EOPNOTSUPP;
10416
10417         if (!rdev->ops->set_mcast_rate)
10418                 return -EOPNOTSUPP;
10419
10420         memset(mcast_rate, 0, sizeof(mcast_rate));
10421
10422         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10423                 return -EINVAL;
10424
10425         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10426         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10427                 return -EINVAL;
10428
10429         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10430
10431         return err;
10432 }
10433
10434 static struct sk_buff *
10435 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10436                             struct wireless_dev *wdev, int approxlen,
10437                             u32 portid, u32 seq, enum nl80211_commands cmd,
10438                             enum nl80211_attrs attr,
10439                             const struct nl80211_vendor_cmd_info *info,
10440                             gfp_t gfp)
10441 {
10442         struct sk_buff *skb;
10443         void *hdr;
10444         struct nlattr *data;
10445
10446         skb = nlmsg_new(approxlen + 100, gfp);
10447         if (!skb)
10448                 return NULL;
10449
10450         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10451         if (!hdr) {
10452                 kfree_skb(skb);
10453                 return NULL;
10454         }
10455
10456         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10457                 goto nla_put_failure;
10458
10459         if (info) {
10460                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10461                                 info->vendor_id))
10462                         goto nla_put_failure;
10463                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10464                                 info->subcmd))
10465                         goto nla_put_failure;
10466         }
10467
10468         if (wdev) {
10469                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10470                                       wdev_id(wdev), NL80211_ATTR_PAD))
10471                         goto nla_put_failure;
10472                 if (wdev->netdev &&
10473                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10474                                 wdev->netdev->ifindex))
10475                         goto nla_put_failure;
10476         }
10477
10478         data = nla_nest_start_noflag(skb, attr);
10479         if (!data)
10480                 goto nla_put_failure;
10481
10482         ((void **)skb->cb)[0] = rdev;
10483         ((void **)skb->cb)[1] = hdr;
10484         ((void **)skb->cb)[2] = data;
10485
10486         return skb;
10487
10488  nla_put_failure:
10489         kfree_skb(skb);
10490         return NULL;
10491 }
10492
10493 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10494                                            struct wireless_dev *wdev,
10495                                            enum nl80211_commands cmd,
10496                                            enum nl80211_attrs attr,
10497                                            unsigned int portid,
10498                                            int vendor_event_idx,
10499                                            int approxlen, gfp_t gfp)
10500 {
10501         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10502         const struct nl80211_vendor_cmd_info *info;
10503
10504         switch (cmd) {
10505         case NL80211_CMD_TESTMODE:
10506                 if (WARN_ON(vendor_event_idx != -1))
10507                         return NULL;
10508                 info = NULL;
10509                 break;
10510         case NL80211_CMD_VENDOR:
10511                 if (WARN_ON(vendor_event_idx < 0 ||
10512                             vendor_event_idx >= wiphy->n_vendor_events))
10513                         return NULL;
10514                 info = &wiphy->vendor_events[vendor_event_idx];
10515                 break;
10516         default:
10517                 WARN_ON(1);
10518                 return NULL;
10519         }
10520
10521         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10522                                            cmd, attr, info, gfp);
10523 }
10524 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10525
10526 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10527 {
10528         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10529         void *hdr = ((void **)skb->cb)[1];
10530         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10531         struct nlattr *data = ((void **)skb->cb)[2];
10532         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10533
10534         /* clear CB data for netlink core to own from now on */
10535         memset(skb->cb, 0, sizeof(skb->cb));
10536
10537         nla_nest_end(skb, data);
10538         genlmsg_end(skb, hdr);
10539
10540         if (nlhdr->nlmsg_pid) {
10541                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10542                                 nlhdr->nlmsg_pid);
10543         } else {
10544                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10545                         mcgrp = NL80211_MCGRP_VENDOR;
10546
10547                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10548                                         skb, 0, mcgrp, gfp);
10549         }
10550 }
10551 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10552
10553 #ifdef CONFIG_NL80211_TESTMODE
10554 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10555 {
10556         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10557         struct wireless_dev *wdev;
10558         int err;
10559
10560         lockdep_assert_held(&rdev->wiphy.mtx);
10561
10562         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
10563                                           info->attrs);
10564
10565         if (!rdev->ops->testmode_cmd)
10566                 return -EOPNOTSUPP;
10567
10568         if (IS_ERR(wdev)) {
10569                 err = PTR_ERR(wdev);
10570                 if (err != -EINVAL)
10571                         return err;
10572                 wdev = NULL;
10573         } else if (wdev->wiphy != &rdev->wiphy) {
10574                 return -EINVAL;
10575         }
10576
10577         if (!info->attrs[NL80211_ATTR_TESTDATA])
10578                 return -EINVAL;
10579
10580         rdev->cur_cmd_info = info;
10581         err = rdev_testmode_cmd(rdev, wdev,
10582                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10583                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10584         rdev->cur_cmd_info = NULL;
10585
10586         return err;
10587 }
10588
10589 static int nl80211_testmode_dump(struct sk_buff *skb,
10590                                  struct netlink_callback *cb)
10591 {
10592         struct cfg80211_registered_device *rdev;
10593         struct nlattr **attrbuf = NULL;
10594         int err;
10595         long phy_idx;
10596         void *data = NULL;
10597         int data_len = 0;
10598
10599         rtnl_lock();
10600
10601         if (cb->args[0]) {
10602                 /*
10603                  * 0 is a valid index, but not valid for args[0],
10604                  * so we need to offset by 1.
10605                  */
10606                 phy_idx = cb->args[0] - 1;
10607
10608                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10609                 if (!rdev) {
10610                         err = -ENOENT;
10611                         goto out_err;
10612                 }
10613         } else {
10614                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10615                                   GFP_KERNEL);
10616                 if (!attrbuf) {
10617                         err = -ENOMEM;
10618                         goto out_err;
10619                 }
10620
10621                 err = nlmsg_parse_deprecated(cb->nlh,
10622                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10623                                              attrbuf, nl80211_fam.maxattr,
10624                                              nl80211_policy, NULL);
10625                 if (err)
10626                         goto out_err;
10627
10628                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10629                 if (IS_ERR(rdev)) {
10630                         err = PTR_ERR(rdev);
10631                         goto out_err;
10632                 }
10633                 phy_idx = rdev->wiphy_idx;
10634
10635                 if (attrbuf[NL80211_ATTR_TESTDATA])
10636                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10637         }
10638
10639         if (cb->args[1]) {
10640                 data = nla_data((void *)cb->args[1]);
10641                 data_len = nla_len((void *)cb->args[1]);
10642         }
10643
10644         if (!rdev->ops->testmode_dump) {
10645                 err = -EOPNOTSUPP;
10646                 goto out_err;
10647         }
10648
10649         while (1) {
10650                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10651                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10652                                            NL80211_CMD_TESTMODE);
10653                 struct nlattr *tmdata;
10654
10655                 if (!hdr)
10656                         break;
10657
10658                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10659                         genlmsg_cancel(skb, hdr);
10660                         break;
10661                 }
10662
10663                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10664                 if (!tmdata) {
10665                         genlmsg_cancel(skb, hdr);
10666                         break;
10667                 }
10668                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10669                 nla_nest_end(skb, tmdata);
10670
10671                 if (err == -ENOBUFS || err == -ENOENT) {
10672                         genlmsg_cancel(skb, hdr);
10673                         break;
10674                 } else if (err) {
10675                         genlmsg_cancel(skb, hdr);
10676                         goto out_err;
10677                 }
10678
10679                 genlmsg_end(skb, hdr);
10680         }
10681
10682         err = skb->len;
10683         /* see above */
10684         cb->args[0] = phy_idx + 1;
10685  out_err:
10686         kfree(attrbuf);
10687         rtnl_unlock();
10688         return err;
10689 }
10690 #endif
10691
10692 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10693 {
10694         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10695         struct net_device *dev = info->user_ptr[1];
10696         struct cfg80211_connect_params connect;
10697         struct wiphy *wiphy;
10698         struct cfg80211_cached_keys *connkeys = NULL;
10699         u32 freq = 0;
10700         int err;
10701
10702         memset(&connect, 0, sizeof(connect));
10703
10704         if (!info->attrs[NL80211_ATTR_SSID] ||
10705             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10706                 return -EINVAL;
10707
10708         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10709                 connect.auth_type =
10710                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10711                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10712                                              NL80211_CMD_CONNECT))
10713                         return -EINVAL;
10714         } else
10715                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10716
10717         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10718
10719         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10720             !wiphy_ext_feature_isset(&rdev->wiphy,
10721                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10722                 return -EINVAL;
10723         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10724
10725         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10726                                       NL80211_MAX_NR_CIPHER_SUITES);
10727         if (err)
10728                 return err;
10729
10730         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10731             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10732                 return -EOPNOTSUPP;
10733
10734         wiphy = &rdev->wiphy;
10735
10736         connect.bg_scan_period = -1;
10737         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10738                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10739                 connect.bg_scan_period =
10740                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10741         }
10742
10743         if (info->attrs[NL80211_ATTR_MAC])
10744                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10745         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10746                 connect.bssid_hint =
10747                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10748         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10749         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10750
10751         if (info->attrs[NL80211_ATTR_IE]) {
10752                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10753                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10754         }
10755
10756         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10757                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10758                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10759                     !wiphy_ext_feature_isset(&rdev->wiphy,
10760                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10761                         return -EOPNOTSUPP;
10762         } else {
10763                 connect.mfp = NL80211_MFP_NO;
10764         }
10765
10766         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10767                 connect.prev_bssid =
10768                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10769
10770         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10771                 freq = MHZ_TO_KHZ(nla_get_u32(
10772                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10773         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10774                 freq +=
10775                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10776
10777         if (freq) {
10778                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10779                 if (!connect.channel)
10780                         return -EINVAL;
10781         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10782                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10783                 freq = MHZ_TO_KHZ(freq);
10784                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10785                 if (!connect.channel_hint)
10786                         return -EINVAL;
10787         }
10788
10789         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10790                 connect.edmg.channels =
10791                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10792
10793                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10794                         connect.edmg.bw_config =
10795                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10796         }
10797
10798         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10799                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10800                 if (IS_ERR(connkeys))
10801                         return PTR_ERR(connkeys);
10802         }
10803
10804         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10805                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10806
10807         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10808                 memcpy(&connect.ht_capa_mask,
10809                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10810                        sizeof(connect.ht_capa_mask));
10811
10812         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10813                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10814                         kfree_sensitive(connkeys);
10815                         return -EINVAL;
10816                 }
10817                 memcpy(&connect.ht_capa,
10818                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10819                        sizeof(connect.ht_capa));
10820         }
10821
10822         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10823                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10824
10825         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10826                 connect.flags |= ASSOC_REQ_DISABLE_HE;
10827
10828         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10829                 memcpy(&connect.vht_capa_mask,
10830                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10831                        sizeof(connect.vht_capa_mask));
10832
10833         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10834                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10835                         kfree_sensitive(connkeys);
10836                         return -EINVAL;
10837                 }
10838                 memcpy(&connect.vht_capa,
10839                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10840                        sizeof(connect.vht_capa));
10841         }
10842
10843         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10844                 if (!((rdev->wiphy.features &
10845                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10846                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10847                     !wiphy_ext_feature_isset(&rdev->wiphy,
10848                                              NL80211_EXT_FEATURE_RRM)) {
10849                         kfree_sensitive(connkeys);
10850                         return -EINVAL;
10851                 }
10852                 connect.flags |= ASSOC_REQ_USE_RRM;
10853         }
10854
10855         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10856         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10857                 kfree_sensitive(connkeys);
10858                 return -EOPNOTSUPP;
10859         }
10860
10861         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10862                 /* bss selection makes no sense if bssid is set */
10863                 if (connect.bssid) {
10864                         kfree_sensitive(connkeys);
10865                         return -EINVAL;
10866                 }
10867
10868                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10869                                        wiphy, &connect.bss_select);
10870                 if (err) {
10871                         kfree_sensitive(connkeys);
10872                         return err;
10873                 }
10874         }
10875
10876         if (wiphy_ext_feature_isset(&rdev->wiphy,
10877                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10878             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10879             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10880             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10881             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10882                 connect.fils_erp_username =
10883                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10884                 connect.fils_erp_username_len =
10885                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10886                 connect.fils_erp_realm =
10887                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10888                 connect.fils_erp_realm_len =
10889                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10890                 connect.fils_erp_next_seq_num =
10891                         nla_get_u16(
10892                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10893                 connect.fils_erp_rrk =
10894                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10895                 connect.fils_erp_rrk_len =
10896                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10897         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10898                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10899                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10900                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10901                 kfree_sensitive(connkeys);
10902                 return -EINVAL;
10903         }
10904
10905         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10906                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10907                         kfree_sensitive(connkeys);
10908                         GENL_SET_ERR_MSG(info,
10909                                          "external auth requires connection ownership");
10910                         return -EINVAL;
10911                 }
10912                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10913         }
10914
10915         wdev_lock(dev->ieee80211_ptr);
10916
10917         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10918                                connect.prev_bssid);
10919         if (err)
10920                 kfree_sensitive(connkeys);
10921
10922         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10923                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10924                 if (connect.bssid)
10925                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10926                                connect.bssid, ETH_ALEN);
10927                 else
10928                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10929         }
10930
10931         wdev_unlock(dev->ieee80211_ptr);
10932
10933         return err;
10934 }
10935
10936 static int nl80211_update_connect_params(struct sk_buff *skb,
10937                                          struct genl_info *info)
10938 {
10939         struct cfg80211_connect_params connect = {};
10940         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10941         struct net_device *dev = info->user_ptr[1];
10942         struct wireless_dev *wdev = dev->ieee80211_ptr;
10943         bool fils_sk_offload;
10944         u32 auth_type;
10945         u32 changed = 0;
10946         int ret;
10947
10948         if (!rdev->ops->update_connect_params)
10949                 return -EOPNOTSUPP;
10950
10951         if (info->attrs[NL80211_ATTR_IE]) {
10952                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10953                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10954                 changed |= UPDATE_ASSOC_IES;
10955         }
10956
10957         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10958                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10959
10960         /*
10961          * when driver supports fils-sk offload all attributes must be
10962          * provided. So the else covers "fils-sk-not-all" and
10963          * "no-fils-sk-any".
10964          */
10965         if (fils_sk_offload &&
10966             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10967             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10968             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10969             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10970                 connect.fils_erp_username =
10971                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10972                 connect.fils_erp_username_len =
10973                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10974                 connect.fils_erp_realm =
10975                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10976                 connect.fils_erp_realm_len =
10977                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10978                 connect.fils_erp_next_seq_num =
10979                         nla_get_u16(
10980                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10981                 connect.fils_erp_rrk =
10982                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10983                 connect.fils_erp_rrk_len =
10984                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10985                 changed |= UPDATE_FILS_ERP_INFO;
10986         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10987                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10988                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10989                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10990                 return -EINVAL;
10991         }
10992
10993         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10994                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10995                 if (!nl80211_valid_auth_type(rdev, auth_type,
10996                                              NL80211_CMD_CONNECT))
10997                         return -EINVAL;
10998
10999                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
11000                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
11001                         return -EINVAL;
11002
11003                 connect.auth_type = auth_type;
11004                 changed |= UPDATE_AUTH_TYPE;
11005         }
11006
11007         wdev_lock(dev->ieee80211_ptr);
11008         if (!wdev->current_bss)
11009                 ret = -ENOLINK;
11010         else
11011                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
11012         wdev_unlock(dev->ieee80211_ptr);
11013
11014         return ret;
11015 }
11016
11017 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11018 {
11019         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11020         struct net_device *dev = info->user_ptr[1];
11021         u16 reason;
11022         int ret;
11023
11024         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11025             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11026                 return -EPERM;
11027
11028         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11029                 reason = WLAN_REASON_DEAUTH_LEAVING;
11030         else
11031                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11032
11033         if (reason == 0)
11034                 return -EINVAL;
11035
11036         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11037             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11038                 return -EOPNOTSUPP;
11039
11040         wdev_lock(dev->ieee80211_ptr);
11041         ret = cfg80211_disconnect(rdev, dev, reason, true);
11042         wdev_unlock(dev->ieee80211_ptr);
11043         return ret;
11044 }
11045
11046 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11047 {
11048         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11049         struct net *net;
11050         int err;
11051
11052         if (info->attrs[NL80211_ATTR_PID]) {
11053                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11054
11055                 net = get_net_ns_by_pid(pid);
11056         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11057                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11058
11059                 net = get_net_ns_by_fd(fd);
11060         } else {
11061                 return -EINVAL;
11062         }
11063
11064         if (IS_ERR(net))
11065                 return PTR_ERR(net);
11066
11067         err = 0;
11068
11069         /* check if anything to do */
11070         if (!net_eq(wiphy_net(&rdev->wiphy), net))
11071                 err = cfg80211_switch_netns(rdev, net);
11072
11073         put_net(net);
11074         return err;
11075 }
11076
11077 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11078 {
11079         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11080         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11081                         struct cfg80211_pmksa *pmksa) = NULL;
11082         struct net_device *dev = info->user_ptr[1];
11083         struct cfg80211_pmksa pmksa;
11084
11085         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11086
11087         if (!info->attrs[NL80211_ATTR_PMKID])
11088                 return -EINVAL;
11089
11090         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11091
11092         if (info->attrs[NL80211_ATTR_MAC]) {
11093                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11094         } else if (info->attrs[NL80211_ATTR_SSID] &&
11095                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11096                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11097                     info->attrs[NL80211_ATTR_PMK])) {
11098                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11099                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11100                 pmksa.cache_id =
11101                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11102         } else {
11103                 return -EINVAL;
11104         }
11105         if (info->attrs[NL80211_ATTR_PMK]) {
11106                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11107                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11108         }
11109
11110         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11111                 pmksa.pmk_lifetime =
11112                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11113
11114         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11115                 pmksa.pmk_reauth_threshold =
11116                         nla_get_u8(
11117                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11118
11119         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11120             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
11121             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
11122               wiphy_ext_feature_isset(&rdev->wiphy,
11123                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
11124                 return -EOPNOTSUPP;
11125
11126         switch (info->genlhdr->cmd) {
11127         case NL80211_CMD_SET_PMKSA:
11128                 rdev_ops = rdev->ops->set_pmksa;
11129                 break;
11130         case NL80211_CMD_DEL_PMKSA:
11131                 rdev_ops = rdev->ops->del_pmksa;
11132                 break;
11133         default:
11134                 WARN_ON(1);
11135                 break;
11136         }
11137
11138         if (!rdev_ops)
11139                 return -EOPNOTSUPP;
11140
11141         return rdev_ops(&rdev->wiphy, dev, &pmksa);
11142 }
11143
11144 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
11145 {
11146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11147         struct net_device *dev = info->user_ptr[1];
11148
11149         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11150             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11151                 return -EOPNOTSUPP;
11152
11153         if (!rdev->ops->flush_pmksa)
11154                 return -EOPNOTSUPP;
11155
11156         return rdev_flush_pmksa(rdev, dev);
11157 }
11158
11159 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
11160 {
11161         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11162         struct net_device *dev = info->user_ptr[1];
11163         u8 action_code, dialog_token;
11164         u32 peer_capability = 0;
11165         u16 status_code;
11166         u8 *peer;
11167         bool initiator;
11168
11169         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11170             !rdev->ops->tdls_mgmt)
11171                 return -EOPNOTSUPP;
11172
11173         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
11174             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
11175             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
11176             !info->attrs[NL80211_ATTR_IE] ||
11177             !info->attrs[NL80211_ATTR_MAC])
11178                 return -EINVAL;
11179
11180         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11181         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
11182         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
11183         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
11184         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
11185         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
11186                 peer_capability =
11187                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
11188
11189         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
11190                               dialog_token, status_code, peer_capability,
11191                               initiator,
11192                               nla_data(info->attrs[NL80211_ATTR_IE]),
11193                               nla_len(info->attrs[NL80211_ATTR_IE]));
11194 }
11195
11196 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
11197 {
11198         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11199         struct net_device *dev = info->user_ptr[1];
11200         enum nl80211_tdls_operation operation;
11201         u8 *peer;
11202
11203         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11204             !rdev->ops->tdls_oper)
11205                 return -EOPNOTSUPP;
11206
11207         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
11208             !info->attrs[NL80211_ATTR_MAC])
11209                 return -EINVAL;
11210
11211         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
11212         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11213
11214         return rdev_tdls_oper(rdev, dev, peer, operation);
11215 }
11216
11217 static int nl80211_remain_on_channel(struct sk_buff *skb,
11218                                      struct genl_info *info)
11219 {
11220         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11221         struct wireless_dev *wdev = info->user_ptr[1];
11222         struct cfg80211_chan_def chandef;
11223         const struct cfg80211_chan_def *compat_chandef;
11224         struct sk_buff *msg;
11225         void *hdr;
11226         u64 cookie;
11227         u32 duration;
11228         int err;
11229
11230         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11231             !info->attrs[NL80211_ATTR_DURATION])
11232                 return -EINVAL;
11233
11234         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11235
11236         if (!rdev->ops->remain_on_channel ||
11237             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11238                 return -EOPNOTSUPP;
11239
11240         /*
11241          * We should be on that channel for at least a minimum amount of
11242          * time (10ms) but no longer than the driver supports.
11243          */
11244         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11245             duration > rdev->wiphy.max_remain_on_channel_duration)
11246                 return -EINVAL;
11247
11248         err = nl80211_parse_chandef(rdev, info, &chandef);
11249         if (err)
11250                 return err;
11251
11252         wdev_lock(wdev);
11253         if (!cfg80211_off_channel_oper_allowed(wdev) &&
11254             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11255                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11256                                                              &chandef);
11257                 if (compat_chandef != &chandef) {
11258                         wdev_unlock(wdev);
11259                         return -EBUSY;
11260                 }
11261         }
11262         wdev_unlock(wdev);
11263
11264         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11265         if (!msg)
11266                 return -ENOMEM;
11267
11268         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11269                              NL80211_CMD_REMAIN_ON_CHANNEL);
11270         if (!hdr) {
11271                 err = -ENOBUFS;
11272                 goto free_msg;
11273         }
11274
11275         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11276                                      duration, &cookie);
11277
11278         if (err)
11279                 goto free_msg;
11280
11281         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11282                               NL80211_ATTR_PAD))
11283                 goto nla_put_failure;
11284
11285         genlmsg_end(msg, hdr);
11286
11287         return genlmsg_reply(msg, info);
11288
11289  nla_put_failure:
11290         err = -ENOBUFS;
11291  free_msg:
11292         nlmsg_free(msg);
11293         return err;
11294 }
11295
11296 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11297                                             struct genl_info *info)
11298 {
11299         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11300         struct wireless_dev *wdev = info->user_ptr[1];
11301         u64 cookie;
11302
11303         if (!info->attrs[NL80211_ATTR_COOKIE])
11304                 return -EINVAL;
11305
11306         if (!rdev->ops->cancel_remain_on_channel)
11307                 return -EOPNOTSUPP;
11308
11309         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11310
11311         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11312 }
11313
11314 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11315                                        struct genl_info *info)
11316 {
11317         struct cfg80211_bitrate_mask mask;
11318         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11319         struct net_device *dev = info->user_ptr[1];
11320         int err;
11321
11322         if (!rdev->ops->set_bitrate_mask)
11323                 return -EOPNOTSUPP;
11324
11325         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11326                                             NL80211_ATTR_TX_RATES, &mask,
11327                                             dev, true);
11328         if (err)
11329                 return err;
11330
11331         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11332 }
11333
11334 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11335 {
11336         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11337         struct wireless_dev *wdev = info->user_ptr[1];
11338         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11339
11340         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11341                 return -EINVAL;
11342
11343         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11344                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11345
11346         switch (wdev->iftype) {
11347         case NL80211_IFTYPE_STATION:
11348         case NL80211_IFTYPE_ADHOC:
11349         case NL80211_IFTYPE_P2P_CLIENT:
11350         case NL80211_IFTYPE_AP:
11351         case NL80211_IFTYPE_AP_VLAN:
11352         case NL80211_IFTYPE_MESH_POINT:
11353         case NL80211_IFTYPE_P2P_GO:
11354         case NL80211_IFTYPE_P2P_DEVICE:
11355                 break;
11356         case NL80211_IFTYPE_NAN:
11357         default:
11358                 return -EOPNOTSUPP;
11359         }
11360
11361         /* not much point in registering if we can't reply */
11362         if (!rdev->ops->mgmt_tx)
11363                 return -EOPNOTSUPP;
11364
11365         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11366             !wiphy_ext_feature_isset(&rdev->wiphy,
11367                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11368                 GENL_SET_ERR_MSG(info,
11369                                  "multicast RX registrations are not supported");
11370                 return -EOPNOTSUPP;
11371         }
11372
11373         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11374                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11375                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11376                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11377                                            info->extack);
11378 }
11379
11380 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11381 {
11382         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11383         struct wireless_dev *wdev = info->user_ptr[1];
11384         struct cfg80211_chan_def chandef;
11385         int err;
11386         void *hdr = NULL;
11387         u64 cookie;
11388         struct sk_buff *msg = NULL;
11389         struct cfg80211_mgmt_tx_params params = {
11390                 .dont_wait_for_ack =
11391                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11392         };
11393
11394         if (!info->attrs[NL80211_ATTR_FRAME])
11395                 return -EINVAL;
11396
11397         if (!rdev->ops->mgmt_tx)
11398                 return -EOPNOTSUPP;
11399
11400         switch (wdev->iftype) {
11401         case NL80211_IFTYPE_P2P_DEVICE:
11402                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11403                         return -EINVAL;
11404                 break;
11405         case NL80211_IFTYPE_STATION:
11406         case NL80211_IFTYPE_ADHOC:
11407         case NL80211_IFTYPE_P2P_CLIENT:
11408         case NL80211_IFTYPE_AP:
11409         case NL80211_IFTYPE_AP_VLAN:
11410         case NL80211_IFTYPE_MESH_POINT:
11411         case NL80211_IFTYPE_P2P_GO:
11412                 break;
11413         case NL80211_IFTYPE_NAN:
11414         default:
11415                 return -EOPNOTSUPP;
11416         }
11417
11418         if (info->attrs[NL80211_ATTR_DURATION]) {
11419                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11420                         return -EINVAL;
11421                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11422
11423                 /*
11424                  * We should wait on the channel for at least a minimum amount
11425                  * of time (10ms) but no longer than the driver supports.
11426                  */
11427                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11428                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
11429                         return -EINVAL;
11430         }
11431
11432         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11433
11434         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11435                 return -EINVAL;
11436
11437         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11438
11439         /* get the channel if any has been specified, otherwise pass NULL to
11440          * the driver. The latter will use the current one
11441          */
11442         chandef.chan = NULL;
11443         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11444                 err = nl80211_parse_chandef(rdev, info, &chandef);
11445                 if (err)
11446                         return err;
11447         }
11448
11449         if (!chandef.chan && params.offchan)
11450                 return -EINVAL;
11451
11452         wdev_lock(wdev);
11453         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11454                 wdev_unlock(wdev);
11455                 return -EBUSY;
11456         }
11457         wdev_unlock(wdev);
11458
11459         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11460         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11461
11462         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11463                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11464                 int i;
11465
11466                 if (len % sizeof(u16))
11467                         return -EINVAL;
11468
11469                 params.n_csa_offsets = len / sizeof(u16);
11470                 params.csa_offsets =
11471                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11472
11473                 /* check that all the offsets fit the frame */
11474                 for (i = 0; i < params.n_csa_offsets; i++) {
11475                         if (params.csa_offsets[i] >= params.len)
11476                                 return -EINVAL;
11477                 }
11478         }
11479
11480         if (!params.dont_wait_for_ack) {
11481                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11482                 if (!msg)
11483                         return -ENOMEM;
11484
11485                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11486                                      NL80211_CMD_FRAME);
11487                 if (!hdr) {
11488                         err = -ENOBUFS;
11489                         goto free_msg;
11490                 }
11491         }
11492
11493         params.chan = chandef.chan;
11494         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
11495         if (err)
11496                 goto free_msg;
11497
11498         if (msg) {
11499                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11500                                       NL80211_ATTR_PAD))
11501                         goto nla_put_failure;
11502
11503                 genlmsg_end(msg, hdr);
11504                 return genlmsg_reply(msg, info);
11505         }
11506
11507         return 0;
11508
11509  nla_put_failure:
11510         err = -ENOBUFS;
11511  free_msg:
11512         nlmsg_free(msg);
11513         return err;
11514 }
11515
11516 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11517 {
11518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11519         struct wireless_dev *wdev = info->user_ptr[1];
11520         u64 cookie;
11521
11522         if (!info->attrs[NL80211_ATTR_COOKIE])
11523                 return -EINVAL;
11524
11525         if (!rdev->ops->mgmt_tx_cancel_wait)
11526                 return -EOPNOTSUPP;
11527
11528         switch (wdev->iftype) {
11529         case NL80211_IFTYPE_STATION:
11530         case NL80211_IFTYPE_ADHOC:
11531         case NL80211_IFTYPE_P2P_CLIENT:
11532         case NL80211_IFTYPE_AP:
11533         case NL80211_IFTYPE_AP_VLAN:
11534         case NL80211_IFTYPE_P2P_GO:
11535         case NL80211_IFTYPE_P2P_DEVICE:
11536                 break;
11537         case NL80211_IFTYPE_NAN:
11538         default:
11539                 return -EOPNOTSUPP;
11540         }
11541
11542         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11543
11544         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11545 }
11546
11547 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11548 {
11549         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11550         struct wireless_dev *wdev;
11551         struct net_device *dev = info->user_ptr[1];
11552         u8 ps_state;
11553         bool state;
11554         int err;
11555
11556         if (!info->attrs[NL80211_ATTR_PS_STATE])
11557                 return -EINVAL;
11558
11559         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11560
11561         wdev = dev->ieee80211_ptr;
11562
11563         if (!rdev->ops->set_power_mgmt)
11564                 return -EOPNOTSUPP;
11565
11566         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11567
11568         if (state == wdev->ps)
11569                 return 0;
11570
11571         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11572         if (!err)
11573                 wdev->ps = state;
11574         return err;
11575 }
11576
11577 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11578 {
11579         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11580         enum nl80211_ps_state ps_state;
11581         struct wireless_dev *wdev;
11582         struct net_device *dev = info->user_ptr[1];
11583         struct sk_buff *msg;
11584         void *hdr;
11585         int err;
11586
11587         wdev = dev->ieee80211_ptr;
11588
11589         if (!rdev->ops->set_power_mgmt)
11590                 return -EOPNOTSUPP;
11591
11592         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11593         if (!msg)
11594                 return -ENOMEM;
11595
11596         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11597                              NL80211_CMD_GET_POWER_SAVE);
11598         if (!hdr) {
11599                 err = -ENOBUFS;
11600                 goto free_msg;
11601         }
11602
11603         if (wdev->ps)
11604                 ps_state = NL80211_PS_ENABLED;
11605         else
11606                 ps_state = NL80211_PS_DISABLED;
11607
11608         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11609                 goto nla_put_failure;
11610
11611         genlmsg_end(msg, hdr);
11612         return genlmsg_reply(msg, info);
11613
11614  nla_put_failure:
11615         err = -ENOBUFS;
11616  free_msg:
11617         nlmsg_free(msg);
11618         return err;
11619 }
11620
11621 static const struct nla_policy
11622 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11623         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11624         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11625         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11626         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11627         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11628         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11629         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11630 };
11631
11632 static int nl80211_set_cqm_txe(struct genl_info *info,
11633                                u32 rate, u32 pkts, u32 intvl)
11634 {
11635         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11636         struct net_device *dev = info->user_ptr[1];
11637         struct wireless_dev *wdev = dev->ieee80211_ptr;
11638
11639         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11640                 return -EINVAL;
11641
11642         if (!rdev->ops->set_cqm_txe_config)
11643                 return -EOPNOTSUPP;
11644
11645         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11646             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11647                 return -EOPNOTSUPP;
11648
11649         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11650 }
11651
11652 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11653                                     struct net_device *dev)
11654 {
11655         struct wireless_dev *wdev = dev->ieee80211_ptr;
11656         s32 last, low, high;
11657         u32 hyst;
11658         int i, n, low_index;
11659         int err;
11660
11661         /* RSSI reporting disabled? */
11662         if (!wdev->cqm_config)
11663                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11664
11665         /*
11666          * Obtain current RSSI value if possible, if not and no RSSI threshold
11667          * event has been received yet, we should receive an event after a
11668          * connection is established and enough beacons received to calculate
11669          * the average.
11670          */
11671         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11672             rdev->ops->get_station) {
11673                 struct station_info sinfo = {};
11674                 u8 *mac_addr;
11675
11676                 mac_addr = wdev->current_bss->pub.bssid;
11677
11678                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11679                 if (err)
11680                         return err;
11681
11682                 cfg80211_sinfo_release_content(&sinfo);
11683                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11684                         wdev->cqm_config->last_rssi_event_value =
11685                                 (s8) sinfo.rx_beacon_signal_avg;
11686         }
11687
11688         last = wdev->cqm_config->last_rssi_event_value;
11689         hyst = wdev->cqm_config->rssi_hyst;
11690         n = wdev->cqm_config->n_rssi_thresholds;
11691
11692         for (i = 0; i < n; i++) {
11693                 i = array_index_nospec(i, n);
11694                 if (last < wdev->cqm_config->rssi_thresholds[i])
11695                         break;
11696         }
11697
11698         low_index = i - 1;
11699         if (low_index >= 0) {
11700                 low_index = array_index_nospec(low_index, n);
11701                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11702         } else {
11703                 low = S32_MIN;
11704         }
11705         if (i < n) {
11706                 i = array_index_nospec(i, n);
11707                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11708         } else {
11709                 high = S32_MAX;
11710         }
11711
11712         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11713 }
11714
11715 static int nl80211_set_cqm_rssi(struct genl_info *info,
11716                                 const s32 *thresholds, int n_thresholds,
11717                                 u32 hysteresis)
11718 {
11719         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11720         struct net_device *dev = info->user_ptr[1];
11721         struct wireless_dev *wdev = dev->ieee80211_ptr;
11722         int i, err;
11723         s32 prev = S32_MIN;
11724
11725         /* Check all values negative and sorted */
11726         for (i = 0; i < n_thresholds; i++) {
11727                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11728                         return -EINVAL;
11729
11730                 prev = thresholds[i];
11731         }
11732
11733         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11734             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11735                 return -EOPNOTSUPP;
11736
11737         wdev_lock(wdev);
11738         cfg80211_cqm_config_free(wdev);
11739         wdev_unlock(wdev);
11740
11741         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11742                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11743                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11744
11745                 return rdev_set_cqm_rssi_config(rdev, dev,
11746                                                 thresholds[0], hysteresis);
11747         }
11748
11749         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11750                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11751                 return -EOPNOTSUPP;
11752
11753         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11754                 n_thresholds = 0;
11755
11756         wdev_lock(wdev);
11757         if (n_thresholds) {
11758                 struct cfg80211_cqm_config *cqm_config;
11759
11760                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11761                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11762                 if (!cqm_config) {
11763                         err = -ENOMEM;
11764                         goto unlock;
11765                 }
11766
11767                 cqm_config->rssi_hyst = hysteresis;
11768                 cqm_config->n_rssi_thresholds = n_thresholds;
11769                 memcpy(cqm_config->rssi_thresholds, thresholds,
11770                        n_thresholds * sizeof(s32));
11771
11772                 wdev->cqm_config = cqm_config;
11773         }
11774
11775         err = cfg80211_cqm_rssi_update(rdev, dev);
11776
11777 unlock:
11778         wdev_unlock(wdev);
11779
11780         return err;
11781 }
11782
11783 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11784 {
11785         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11786         struct nlattr *cqm;
11787         int err;
11788
11789         cqm = info->attrs[NL80211_ATTR_CQM];
11790         if (!cqm)
11791                 return -EINVAL;
11792
11793         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11794                                           nl80211_attr_cqm_policy,
11795                                           info->extack);
11796         if (err)
11797                 return err;
11798
11799         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11800             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11801                 const s32 *thresholds =
11802                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11803                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11804                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11805
11806                 if (len % 4)
11807                         return -EINVAL;
11808
11809                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11810                                             hysteresis);
11811         }
11812
11813         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11814             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11815             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11816                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11817                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11818                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11819
11820                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11821         }
11822
11823         return -EINVAL;
11824 }
11825
11826 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11827 {
11828         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11829         struct net_device *dev = info->user_ptr[1];
11830         struct ocb_setup setup = {};
11831         int err;
11832
11833         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11834         if (err)
11835                 return err;
11836
11837         return cfg80211_join_ocb(rdev, dev, &setup);
11838 }
11839
11840 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11841 {
11842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11843         struct net_device *dev = info->user_ptr[1];
11844
11845         return cfg80211_leave_ocb(rdev, dev);
11846 }
11847
11848 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11849 {
11850         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11851         struct net_device *dev = info->user_ptr[1];
11852         struct mesh_config cfg;
11853         struct mesh_setup setup;
11854         int err;
11855
11856         /* start with default */
11857         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11858         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11859
11860         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11861                 /* and parse parameters if given */
11862                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11863                 if (err)
11864                         return err;
11865         }
11866
11867         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11868             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11869                 return -EINVAL;
11870
11871         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11872         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11873
11874         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11875             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11876                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11877                         return -EINVAL;
11878
11879         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11880                 setup.beacon_interval =
11881                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11882
11883                 err = cfg80211_validate_beacon_int(rdev,
11884                                                    NL80211_IFTYPE_MESH_POINT,
11885                                                    setup.beacon_interval);
11886                 if (err)
11887                         return err;
11888         }
11889
11890         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11891                 setup.dtim_period =
11892                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11893                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11894                         return -EINVAL;
11895         }
11896
11897         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11898                 /* parse additional setup parameters if given */
11899                 err = nl80211_parse_mesh_setup(info, &setup);
11900                 if (err)
11901                         return err;
11902         }
11903
11904         if (setup.user_mpm)
11905                 cfg.auto_open_plinks = false;
11906
11907         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11908                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11909                 if (err)
11910                         return err;
11911         } else {
11912                 /* __cfg80211_join_mesh() will sort it out */
11913                 setup.chandef.chan = NULL;
11914         }
11915
11916         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11917                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11918                 int n_rates =
11919                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11920                 struct ieee80211_supported_band *sband;
11921
11922                 if (!setup.chandef.chan)
11923                         return -EINVAL;
11924
11925                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11926
11927                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11928                                              &setup.basic_rates);
11929                 if (err)
11930                         return err;
11931         }
11932
11933         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11934                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11935                                                     NL80211_ATTR_TX_RATES,
11936                                                     &setup.beacon_rate,
11937                                                     dev, false);
11938                 if (err)
11939                         return err;
11940
11941                 if (!setup.chandef.chan)
11942                         return -EINVAL;
11943
11944                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11945                                               &setup.beacon_rate);
11946                 if (err)
11947                         return err;
11948         }
11949
11950         setup.userspace_handles_dfs =
11951                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11952
11953         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11954                 int r = validate_pae_over_nl80211(rdev, info);
11955
11956                 if (r < 0)
11957                         return r;
11958
11959                 setup.control_port_over_nl80211 = true;
11960         }
11961
11962         wdev_lock(dev->ieee80211_ptr);
11963         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11964         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11965                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11966         wdev_unlock(dev->ieee80211_ptr);
11967
11968         return err;
11969 }
11970
11971 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11972 {
11973         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11974         struct net_device *dev = info->user_ptr[1];
11975
11976         return cfg80211_leave_mesh(rdev, dev);
11977 }
11978
11979 #ifdef CONFIG_PM
11980 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11981                                         struct cfg80211_registered_device *rdev)
11982 {
11983         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11984         struct nlattr *nl_pats, *nl_pat;
11985         int i, pat_len;
11986
11987         if (!wowlan->n_patterns)
11988                 return 0;
11989
11990         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11991         if (!nl_pats)
11992                 return -ENOBUFS;
11993
11994         for (i = 0; i < wowlan->n_patterns; i++) {
11995                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11996                 if (!nl_pat)
11997                         return -ENOBUFS;
11998                 pat_len = wowlan->patterns[i].pattern_len;
11999                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
12000                             wowlan->patterns[i].mask) ||
12001                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12002                             wowlan->patterns[i].pattern) ||
12003                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12004                                 wowlan->patterns[i].pkt_offset))
12005                         return -ENOBUFS;
12006                 nla_nest_end(msg, nl_pat);
12007         }
12008         nla_nest_end(msg, nl_pats);
12009
12010         return 0;
12011 }
12012
12013 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
12014                                    struct cfg80211_wowlan_tcp *tcp)
12015 {
12016         struct nlattr *nl_tcp;
12017
12018         if (!tcp)
12019                 return 0;
12020
12021         nl_tcp = nla_nest_start_noflag(msg,
12022                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12023         if (!nl_tcp)
12024                 return -ENOBUFS;
12025
12026         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12027             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12028             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12029             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12030             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12031             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12032                     tcp->payload_len, tcp->payload) ||
12033             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12034                         tcp->data_interval) ||
12035             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12036                     tcp->wake_len, tcp->wake_data) ||
12037             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12038                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12039                 return -ENOBUFS;
12040
12041         if (tcp->payload_seq.len &&
12042             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12043                     sizeof(tcp->payload_seq), &tcp->payload_seq))
12044                 return -ENOBUFS;
12045
12046         if (tcp->payload_tok.len &&
12047             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12048                     sizeof(tcp->payload_tok) + tcp->tokens_size,
12049                     &tcp->payload_tok))
12050                 return -ENOBUFS;
12051
12052         nla_nest_end(msg, nl_tcp);
12053
12054         return 0;
12055 }
12056
12057 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12058                                   struct cfg80211_sched_scan_request *req)
12059 {
12060         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12061         int i;
12062
12063         if (!req)
12064                 return 0;
12065
12066         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12067         if (!nd)
12068                 return -ENOBUFS;
12069
12070         if (req->n_scan_plans == 1 &&
12071             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12072                         req->scan_plans[0].interval * 1000))
12073                 return -ENOBUFS;
12074
12075         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12076                 return -ENOBUFS;
12077
12078         if (req->relative_rssi_set) {
12079                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12080
12081                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12082                                req->relative_rssi))
12083                         return -ENOBUFS;
12084
12085                 rssi_adjust.band = req->rssi_adjust.band;
12086                 rssi_adjust.delta = req->rssi_adjust.delta;
12087                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
12088                             sizeof(rssi_adjust), &rssi_adjust))
12089                         return -ENOBUFS;
12090         }
12091
12092         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12093         if (!freqs)
12094                 return -ENOBUFS;
12095
12096         for (i = 0; i < req->n_channels; i++) {
12097                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12098                         return -ENOBUFS;
12099         }
12100
12101         nla_nest_end(msg, freqs);
12102
12103         if (req->n_match_sets) {
12104                 matches = nla_nest_start_noflag(msg,
12105                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
12106                 if (!matches)
12107                         return -ENOBUFS;
12108
12109                 for (i = 0; i < req->n_match_sets; i++) {
12110                         match = nla_nest_start_noflag(msg, i);
12111                         if (!match)
12112                                 return -ENOBUFS;
12113
12114                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
12115                                     req->match_sets[i].ssid.ssid_len,
12116                                     req->match_sets[i].ssid.ssid))
12117                                 return -ENOBUFS;
12118                         nla_nest_end(msg, match);
12119                 }
12120                 nla_nest_end(msg, matches);
12121         }
12122
12123         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
12124         if (!scan_plans)
12125                 return -ENOBUFS;
12126
12127         for (i = 0; i < req->n_scan_plans; i++) {
12128                 scan_plan = nla_nest_start_noflag(msg, i + 1);
12129                 if (!scan_plan)
12130                         return -ENOBUFS;
12131
12132                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
12133                                 req->scan_plans[i].interval) ||
12134                     (req->scan_plans[i].iterations &&
12135                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
12136                                  req->scan_plans[i].iterations)))
12137                         return -ENOBUFS;
12138                 nla_nest_end(msg, scan_plan);
12139         }
12140         nla_nest_end(msg, scan_plans);
12141
12142         nla_nest_end(msg, nd);
12143
12144         return 0;
12145 }
12146
12147 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
12148 {
12149         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12150         struct sk_buff *msg;
12151         void *hdr;
12152         u32 size = NLMSG_DEFAULT_SIZE;
12153
12154         if (!rdev->wiphy.wowlan)
12155                 return -EOPNOTSUPP;
12156
12157         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
12158                 /* adjust size to have room for all the data */
12159                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
12160                         rdev->wiphy.wowlan_config->tcp->payload_len +
12161                         rdev->wiphy.wowlan_config->tcp->wake_len +
12162                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
12163         }
12164
12165         msg = nlmsg_new(size, GFP_KERNEL);
12166         if (!msg)
12167                 return -ENOMEM;
12168
12169         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12170                              NL80211_CMD_GET_WOWLAN);
12171         if (!hdr)
12172                 goto nla_put_failure;
12173
12174         if (rdev->wiphy.wowlan_config) {
12175                 struct nlattr *nl_wowlan;
12176
12177                 nl_wowlan = nla_nest_start_noflag(msg,
12178                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
12179                 if (!nl_wowlan)
12180                         goto nla_put_failure;
12181
12182                 if ((rdev->wiphy.wowlan_config->any &&
12183                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
12184                     (rdev->wiphy.wowlan_config->disconnect &&
12185                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
12186                     (rdev->wiphy.wowlan_config->magic_pkt &&
12187                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
12188                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
12189                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
12190                     (rdev->wiphy.wowlan_config->eap_identity_req &&
12191                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
12192                     (rdev->wiphy.wowlan_config->four_way_handshake &&
12193                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
12194                     (rdev->wiphy.wowlan_config->rfkill_release &&
12195                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
12196                         goto nla_put_failure;
12197
12198                 if (nl80211_send_wowlan_patterns(msg, rdev))
12199                         goto nla_put_failure;
12200
12201                 if (nl80211_send_wowlan_tcp(msg,
12202                                             rdev->wiphy.wowlan_config->tcp))
12203                         goto nla_put_failure;
12204
12205                 if (nl80211_send_wowlan_nd(
12206                             msg,
12207                             rdev->wiphy.wowlan_config->nd_config))
12208                         goto nla_put_failure;
12209
12210                 nla_nest_end(msg, nl_wowlan);
12211         }
12212
12213         genlmsg_end(msg, hdr);
12214         return genlmsg_reply(msg, info);
12215
12216 nla_put_failure:
12217         nlmsg_free(msg);
12218         return -ENOBUFS;
12219 }
12220
12221 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
12222                                     struct nlattr *attr,
12223                                     struct cfg80211_wowlan *trig)
12224 {
12225         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
12226         struct cfg80211_wowlan_tcp *cfg;
12227         struct nl80211_wowlan_tcp_data_token *tok = NULL;
12228         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
12229         u32 size;
12230         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
12231         int err, port;
12232
12233         if (!rdev->wiphy.wowlan->tcp)
12234                 return -EINVAL;
12235
12236         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12237                                           nl80211_wowlan_tcp_policy, NULL);
12238         if (err)
12239                 return err;
12240
12241         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12242             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12243             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12244             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12245             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12246             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12247             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12248             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12249                 return -EINVAL;
12250
12251         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12252         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12253                 return -EINVAL;
12254
12255         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12256                         rdev->wiphy.wowlan->tcp->data_interval_max ||
12257             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12258                 return -EINVAL;
12259
12260         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12261         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12262                 return -EINVAL;
12263
12264         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12265         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12266                 return -EINVAL;
12267
12268         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12269                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12270
12271                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12272                 tokens_size = tokln - sizeof(*tok);
12273
12274                 if (!tok->len || tokens_size % tok->len)
12275                         return -EINVAL;
12276                 if (!rdev->wiphy.wowlan->tcp->tok)
12277                         return -EINVAL;
12278                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12279                         return -EINVAL;
12280                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12281                         return -EINVAL;
12282                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12283                         return -EINVAL;
12284                 if (tok->offset + tok->len > data_size)
12285                         return -EINVAL;
12286         }
12287
12288         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12289                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12290                 if (!rdev->wiphy.wowlan->tcp->seq)
12291                         return -EINVAL;
12292                 if (seq->len == 0 || seq->len > 4)
12293                         return -EINVAL;
12294                 if (seq->len + seq->offset > data_size)
12295                         return -EINVAL;
12296         }
12297
12298         size = sizeof(*cfg);
12299         size += data_size;
12300         size += wake_size + wake_mask_size;
12301         size += tokens_size;
12302
12303         cfg = kzalloc(size, GFP_KERNEL);
12304         if (!cfg)
12305                 return -ENOMEM;
12306         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12307         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12308         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12309                ETH_ALEN);
12310         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12311                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12312         else
12313                 port = 0;
12314 #ifdef CONFIG_INET
12315         /* allocate a socket and port for it and use it */
12316         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12317                             IPPROTO_TCP, &cfg->sock, 1);
12318         if (err) {
12319                 kfree(cfg);
12320                 return err;
12321         }
12322         if (inet_csk_get_port(cfg->sock->sk, port)) {
12323                 sock_release(cfg->sock);
12324                 kfree(cfg);
12325                 return -EADDRINUSE;
12326         }
12327         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12328 #else
12329         if (!port) {
12330                 kfree(cfg);
12331                 return -EINVAL;
12332         }
12333         cfg->src_port = port;
12334 #endif
12335
12336         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12337         cfg->payload_len = data_size;
12338         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12339         memcpy((void *)cfg->payload,
12340                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12341                data_size);
12342         if (seq)
12343                 cfg->payload_seq = *seq;
12344         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12345         cfg->wake_len = wake_size;
12346         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12347         memcpy((void *)cfg->wake_data,
12348                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12349                wake_size);
12350         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12351                          data_size + wake_size;
12352         memcpy((void *)cfg->wake_mask,
12353                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12354                wake_mask_size);
12355         if (tok) {
12356                 cfg->tokens_size = tokens_size;
12357                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12358         }
12359
12360         trig->tcp = cfg;
12361
12362         return 0;
12363 }
12364
12365 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12366                                    const struct wiphy_wowlan_support *wowlan,
12367                                    struct nlattr *attr,
12368                                    struct cfg80211_wowlan *trig)
12369 {
12370         struct nlattr **tb;
12371         int err;
12372
12373         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12374         if (!tb)
12375                 return -ENOMEM;
12376
12377         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12378                 err = -EOPNOTSUPP;
12379                 goto out;
12380         }
12381
12382         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12383                                           nl80211_policy, NULL);
12384         if (err)
12385                 goto out;
12386
12387         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12388                                                    wowlan->max_nd_match_sets);
12389         err = PTR_ERR_OR_ZERO(trig->nd_config);
12390         if (err)
12391                 trig->nd_config = NULL;
12392
12393 out:
12394         kfree(tb);
12395         return err;
12396 }
12397
12398 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12399 {
12400         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12401         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12402         struct cfg80211_wowlan new_triggers = {};
12403         struct cfg80211_wowlan *ntrig;
12404         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12405         int err, i;
12406         bool prev_enabled = rdev->wiphy.wowlan_config;
12407         bool regular = false;
12408
12409         if (!wowlan)
12410                 return -EOPNOTSUPP;
12411
12412         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12413                 cfg80211_rdev_free_wowlan(rdev);
12414                 rdev->wiphy.wowlan_config = NULL;
12415                 goto set_wakeup;
12416         }
12417
12418         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12419                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12420                                           nl80211_wowlan_policy, info->extack);
12421         if (err)
12422                 return err;
12423
12424         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12425                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12426                         return -EINVAL;
12427                 new_triggers.any = true;
12428         }
12429
12430         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12431                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12432                         return -EINVAL;
12433                 new_triggers.disconnect = true;
12434                 regular = true;
12435         }
12436
12437         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12438                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12439                         return -EINVAL;
12440                 new_triggers.magic_pkt = true;
12441                 regular = true;
12442         }
12443
12444         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12445                 return -EINVAL;
12446
12447         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12448                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12449                         return -EINVAL;
12450                 new_triggers.gtk_rekey_failure = true;
12451                 regular = true;
12452         }
12453
12454         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12455                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12456                         return -EINVAL;
12457                 new_triggers.eap_identity_req = true;
12458                 regular = true;
12459         }
12460
12461         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12462                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12463                         return -EINVAL;
12464                 new_triggers.four_way_handshake = true;
12465                 regular = true;
12466         }
12467
12468         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12469                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12470                         return -EINVAL;
12471                 new_triggers.rfkill_release = true;
12472                 regular = true;
12473         }
12474
12475         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12476                 struct nlattr *pat;
12477                 int n_patterns = 0;
12478                 int rem, pat_len, mask_len, pkt_offset;
12479                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12480
12481                 regular = true;
12482
12483                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12484                                     rem)
12485                         n_patterns++;
12486                 if (n_patterns > wowlan->n_patterns)
12487                         return -EINVAL;
12488
12489                 new_triggers.patterns = kcalloc(n_patterns,
12490                                                 sizeof(new_triggers.patterns[0]),
12491                                                 GFP_KERNEL);
12492                 if (!new_triggers.patterns)
12493                         return -ENOMEM;
12494
12495                 new_triggers.n_patterns = n_patterns;
12496                 i = 0;
12497
12498                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12499                                     rem) {
12500                         u8 *mask_pat;
12501
12502                         err = nla_parse_nested_deprecated(pat_tb,
12503                                                           MAX_NL80211_PKTPAT,
12504                                                           pat,
12505                                                           nl80211_packet_pattern_policy,
12506                                                           info->extack);
12507                         if (err)
12508                                 goto error;
12509
12510                         err = -EINVAL;
12511                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
12512                             !pat_tb[NL80211_PKTPAT_PATTERN])
12513                                 goto error;
12514                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12515                         mask_len = DIV_ROUND_UP(pat_len, 8);
12516                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12517                                 goto error;
12518                         if (pat_len > wowlan->pattern_max_len ||
12519                             pat_len < wowlan->pattern_min_len)
12520                                 goto error;
12521
12522                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
12523                                 pkt_offset = 0;
12524                         else
12525                                 pkt_offset = nla_get_u32(
12526                                         pat_tb[NL80211_PKTPAT_OFFSET]);
12527                         if (pkt_offset > wowlan->max_pkt_offset)
12528                                 goto error;
12529                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12530
12531                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12532                         if (!mask_pat) {
12533                                 err = -ENOMEM;
12534                                 goto error;
12535                         }
12536                         new_triggers.patterns[i].mask = mask_pat;
12537                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12538                                mask_len);
12539                         mask_pat += mask_len;
12540                         new_triggers.patterns[i].pattern = mask_pat;
12541                         new_triggers.patterns[i].pattern_len = pat_len;
12542                         memcpy(mask_pat,
12543                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12544                                pat_len);
12545                         i++;
12546                 }
12547         }
12548
12549         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12550                 regular = true;
12551                 err = nl80211_parse_wowlan_tcp(
12552                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12553                         &new_triggers);
12554                 if (err)
12555                         goto error;
12556         }
12557
12558         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12559                 regular = true;
12560                 err = nl80211_parse_wowlan_nd(
12561                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12562                         &new_triggers);
12563                 if (err)
12564                         goto error;
12565         }
12566
12567         /* The 'any' trigger means the device continues operating more or less
12568          * as in its normal operation mode and wakes up the host on most of the
12569          * normal interrupts (like packet RX, ...)
12570          * It therefore makes little sense to combine with the more constrained
12571          * wakeup trigger modes.
12572          */
12573         if (new_triggers.any && regular) {
12574                 err = -EINVAL;
12575                 goto error;
12576         }
12577
12578         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12579         if (!ntrig) {
12580                 err = -ENOMEM;
12581                 goto error;
12582         }
12583         cfg80211_rdev_free_wowlan(rdev);
12584         rdev->wiphy.wowlan_config = ntrig;
12585
12586  set_wakeup:
12587         if (rdev->ops->set_wakeup &&
12588             prev_enabled != !!rdev->wiphy.wowlan_config)
12589                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12590
12591         return 0;
12592  error:
12593         for (i = 0; i < new_triggers.n_patterns; i++)
12594                 kfree(new_triggers.patterns[i].mask);
12595         kfree(new_triggers.patterns);
12596         if (new_triggers.tcp && new_triggers.tcp->sock)
12597                 sock_release(new_triggers.tcp->sock);
12598         kfree(new_triggers.tcp);
12599         kfree(new_triggers.nd_config);
12600         return err;
12601 }
12602 #endif
12603
12604 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12605                                        struct cfg80211_registered_device *rdev)
12606 {
12607         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12608         int i, j, pat_len;
12609         struct cfg80211_coalesce_rules *rule;
12610
12611         if (!rdev->coalesce->n_rules)
12612                 return 0;
12613
12614         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12615         if (!nl_rules)
12616                 return -ENOBUFS;
12617
12618         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12619                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12620                 if (!nl_rule)
12621                         return -ENOBUFS;
12622
12623                 rule = &rdev->coalesce->rules[i];
12624                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12625                                 rule->delay))
12626                         return -ENOBUFS;
12627
12628                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12629                                 rule->condition))
12630                         return -ENOBUFS;
12631
12632                 nl_pats = nla_nest_start_noflag(msg,
12633                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12634                 if (!nl_pats)
12635                         return -ENOBUFS;
12636
12637                 for (j = 0; j < rule->n_patterns; j++) {
12638                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12639                         if (!nl_pat)
12640                                 return -ENOBUFS;
12641                         pat_len = rule->patterns[j].pattern_len;
12642                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12643                                     DIV_ROUND_UP(pat_len, 8),
12644                                     rule->patterns[j].mask) ||
12645                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12646                                     rule->patterns[j].pattern) ||
12647                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12648                                         rule->patterns[j].pkt_offset))
12649                                 return -ENOBUFS;
12650                         nla_nest_end(msg, nl_pat);
12651                 }
12652                 nla_nest_end(msg, nl_pats);
12653                 nla_nest_end(msg, nl_rule);
12654         }
12655         nla_nest_end(msg, nl_rules);
12656
12657         return 0;
12658 }
12659
12660 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12661 {
12662         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12663         struct sk_buff *msg;
12664         void *hdr;
12665
12666         if (!rdev->wiphy.coalesce)
12667                 return -EOPNOTSUPP;
12668
12669         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12670         if (!msg)
12671                 return -ENOMEM;
12672
12673         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12674                              NL80211_CMD_GET_COALESCE);
12675         if (!hdr)
12676                 goto nla_put_failure;
12677
12678         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12679                 goto nla_put_failure;
12680
12681         genlmsg_end(msg, hdr);
12682         return genlmsg_reply(msg, info);
12683
12684 nla_put_failure:
12685         nlmsg_free(msg);
12686         return -ENOBUFS;
12687 }
12688
12689 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12690 {
12691         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12692         int i, j;
12693         struct cfg80211_coalesce_rules *rule;
12694
12695         if (!coalesce)
12696                 return;
12697
12698         for (i = 0; i < coalesce->n_rules; i++) {
12699                 rule = &coalesce->rules[i];
12700                 for (j = 0; j < rule->n_patterns; j++)
12701                         kfree(rule->patterns[j].mask);
12702                 kfree(rule->patterns);
12703         }
12704         kfree(coalesce->rules);
12705         kfree(coalesce);
12706         rdev->coalesce = NULL;
12707 }
12708
12709 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12710                                        struct nlattr *rule,
12711                                        struct cfg80211_coalesce_rules *new_rule)
12712 {
12713         int err, i;
12714         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12715         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12716         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12717         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12718
12719         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12720                                           rule, nl80211_coalesce_policy, NULL);
12721         if (err)
12722                 return err;
12723
12724         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12725                 new_rule->delay =
12726                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12727         if (new_rule->delay > coalesce->max_delay)
12728                 return -EINVAL;
12729
12730         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12731                 new_rule->condition =
12732                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12733
12734         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12735                 return -EINVAL;
12736
12737         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12738                             rem)
12739                 n_patterns++;
12740         if (n_patterns > coalesce->n_patterns)
12741                 return -EINVAL;
12742
12743         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12744                                      GFP_KERNEL);
12745         if (!new_rule->patterns)
12746                 return -ENOMEM;
12747
12748         new_rule->n_patterns = n_patterns;
12749         i = 0;
12750
12751         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12752                             rem) {
12753                 u8 *mask_pat;
12754
12755                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12756                                                   pat,
12757                                                   nl80211_packet_pattern_policy,
12758                                                   NULL);
12759                 if (err)
12760                         return err;
12761
12762                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12763                     !pat_tb[NL80211_PKTPAT_PATTERN])
12764                         return -EINVAL;
12765                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12766                 mask_len = DIV_ROUND_UP(pat_len, 8);
12767                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12768                         return -EINVAL;
12769                 if (pat_len > coalesce->pattern_max_len ||
12770                     pat_len < coalesce->pattern_min_len)
12771                         return -EINVAL;
12772
12773                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12774                         pkt_offset = 0;
12775                 else
12776                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12777                 if (pkt_offset > coalesce->max_pkt_offset)
12778                         return -EINVAL;
12779                 new_rule->patterns[i].pkt_offset = pkt_offset;
12780
12781                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12782                 if (!mask_pat)
12783                         return -ENOMEM;
12784
12785                 new_rule->patterns[i].mask = mask_pat;
12786                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12787                        mask_len);
12788
12789                 mask_pat += mask_len;
12790                 new_rule->patterns[i].pattern = mask_pat;
12791                 new_rule->patterns[i].pattern_len = pat_len;
12792                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12793                        pat_len);
12794                 i++;
12795         }
12796
12797         return 0;
12798 }
12799
12800 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12801 {
12802         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12803         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12804         struct cfg80211_coalesce new_coalesce = {};
12805         struct cfg80211_coalesce *n_coalesce;
12806         int err, rem_rule, n_rules = 0, i, j;
12807         struct nlattr *rule;
12808         struct cfg80211_coalesce_rules *tmp_rule;
12809
12810         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12811                 return -EOPNOTSUPP;
12812
12813         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12814                 cfg80211_rdev_free_coalesce(rdev);
12815                 rdev_set_coalesce(rdev, NULL);
12816                 return 0;
12817         }
12818
12819         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12820                             rem_rule)
12821                 n_rules++;
12822         if (n_rules > coalesce->n_rules)
12823                 return -EINVAL;
12824
12825         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12826                                      GFP_KERNEL);
12827         if (!new_coalesce.rules)
12828                 return -ENOMEM;
12829
12830         new_coalesce.n_rules = n_rules;
12831         i = 0;
12832
12833         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12834                             rem_rule) {
12835                 err = nl80211_parse_coalesce_rule(rdev, rule,
12836                                                   &new_coalesce.rules[i]);
12837                 if (err)
12838                         goto error;
12839
12840                 i++;
12841         }
12842
12843         err = rdev_set_coalesce(rdev, &new_coalesce);
12844         if (err)
12845                 goto error;
12846
12847         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12848         if (!n_coalesce) {
12849                 err = -ENOMEM;
12850                 goto error;
12851         }
12852         cfg80211_rdev_free_coalesce(rdev);
12853         rdev->coalesce = n_coalesce;
12854
12855         return 0;
12856 error:
12857         for (i = 0; i < new_coalesce.n_rules; i++) {
12858                 tmp_rule = &new_coalesce.rules[i];
12859                 for (j = 0; j < tmp_rule->n_patterns; j++)
12860                         kfree(tmp_rule->patterns[j].mask);
12861                 kfree(tmp_rule->patterns);
12862         }
12863         kfree(new_coalesce.rules);
12864
12865         return err;
12866 }
12867
12868 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12869 {
12870         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12871         struct net_device *dev = info->user_ptr[1];
12872         struct wireless_dev *wdev = dev->ieee80211_ptr;
12873         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12874         struct cfg80211_gtk_rekey_data rekey_data = {};
12875         int err;
12876
12877         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12878                 return -EINVAL;
12879
12880         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12881                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12882                                           nl80211_rekey_policy, info->extack);
12883         if (err)
12884                 return err;
12885
12886         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12887             !tb[NL80211_REKEY_DATA_KCK])
12888                 return -EINVAL;
12889         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12890             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12891               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12892                 return -ERANGE;
12893         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12894             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12895               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12896                 return -ERANGE;
12897
12898         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12899         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12900         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12901         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12902         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12903         if (tb[NL80211_REKEY_DATA_AKM])
12904                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12905
12906         wdev_lock(wdev);
12907         if (!wdev->current_bss) {
12908                 err = -ENOTCONN;
12909                 goto out;
12910         }
12911
12912         if (!rdev->ops->set_rekey_data) {
12913                 err = -EOPNOTSUPP;
12914                 goto out;
12915         }
12916
12917         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12918  out:
12919         wdev_unlock(wdev);
12920         return err;
12921 }
12922
12923 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12924                                              struct genl_info *info)
12925 {
12926         struct net_device *dev = info->user_ptr[1];
12927         struct wireless_dev *wdev = dev->ieee80211_ptr;
12928
12929         if (wdev->iftype != NL80211_IFTYPE_AP &&
12930             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12931                 return -EINVAL;
12932
12933         if (wdev->ap_unexpected_nlportid)
12934                 return -EBUSY;
12935
12936         wdev->ap_unexpected_nlportid = info->snd_portid;
12937         return 0;
12938 }
12939
12940 static int nl80211_probe_client(struct sk_buff *skb,
12941                                 struct genl_info *info)
12942 {
12943         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12944         struct net_device *dev = info->user_ptr[1];
12945         struct wireless_dev *wdev = dev->ieee80211_ptr;
12946         struct sk_buff *msg;
12947         void *hdr;
12948         const u8 *addr;
12949         u64 cookie;
12950         int err;
12951
12952         if (wdev->iftype != NL80211_IFTYPE_AP &&
12953             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12954                 return -EOPNOTSUPP;
12955
12956         if (!info->attrs[NL80211_ATTR_MAC])
12957                 return -EINVAL;
12958
12959         if (!rdev->ops->probe_client)
12960                 return -EOPNOTSUPP;
12961
12962         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12963         if (!msg)
12964                 return -ENOMEM;
12965
12966         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12967                              NL80211_CMD_PROBE_CLIENT);
12968         if (!hdr) {
12969                 err = -ENOBUFS;
12970                 goto free_msg;
12971         }
12972
12973         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12974
12975         err = rdev_probe_client(rdev, dev, addr, &cookie);
12976         if (err)
12977                 goto free_msg;
12978
12979         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12980                               NL80211_ATTR_PAD))
12981                 goto nla_put_failure;
12982
12983         genlmsg_end(msg, hdr);
12984
12985         return genlmsg_reply(msg, info);
12986
12987  nla_put_failure:
12988         err = -ENOBUFS;
12989  free_msg:
12990         nlmsg_free(msg);
12991         return err;
12992 }
12993
12994 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12995 {
12996         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12997         struct cfg80211_beacon_registration *reg, *nreg;
12998         int rv;
12999
13000         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
13001                 return -EOPNOTSUPP;
13002
13003         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
13004         if (!nreg)
13005                 return -ENOMEM;
13006
13007         /* First, check if already registered. */
13008         spin_lock_bh(&rdev->beacon_registrations_lock);
13009         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
13010                 if (reg->nlportid == info->snd_portid) {
13011                         rv = -EALREADY;
13012                         goto out_err;
13013                 }
13014         }
13015         /* Add it to the list */
13016         nreg->nlportid = info->snd_portid;
13017         list_add(&nreg->list, &rdev->beacon_registrations);
13018
13019         spin_unlock_bh(&rdev->beacon_registrations_lock);
13020
13021         return 0;
13022 out_err:
13023         spin_unlock_bh(&rdev->beacon_registrations_lock);
13024         kfree(nreg);
13025         return rv;
13026 }
13027
13028 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13029 {
13030         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13031         struct wireless_dev *wdev = info->user_ptr[1];
13032         int err;
13033
13034         if (!rdev->ops->start_p2p_device)
13035                 return -EOPNOTSUPP;
13036
13037         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13038                 return -EOPNOTSUPP;
13039
13040         if (wdev_running(wdev))
13041                 return 0;
13042
13043         if (rfkill_blocked(rdev->rfkill))
13044                 return -ERFKILL;
13045
13046         err = rdev_start_p2p_device(rdev, wdev);
13047         if (err)
13048                 return err;
13049
13050         wdev->is_running = true;
13051         rdev->opencount++;
13052
13053         return 0;
13054 }
13055
13056 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13057 {
13058         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13059         struct wireless_dev *wdev = info->user_ptr[1];
13060
13061         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13062                 return -EOPNOTSUPP;
13063
13064         if (!rdev->ops->stop_p2p_device)
13065                 return -EOPNOTSUPP;
13066
13067         cfg80211_stop_p2p_device(rdev, wdev);
13068
13069         return 0;
13070 }
13071
13072 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13073 {
13074         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13075         struct wireless_dev *wdev = info->user_ptr[1];
13076         struct cfg80211_nan_conf conf = {};
13077         int err;
13078
13079         if (wdev->iftype != NL80211_IFTYPE_NAN)
13080                 return -EOPNOTSUPP;
13081
13082         if (wdev_running(wdev))
13083                 return -EEXIST;
13084
13085         if (rfkill_blocked(rdev->rfkill))
13086                 return -ERFKILL;
13087
13088         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
13089                 return -EINVAL;
13090
13091         conf.master_pref =
13092                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13093
13094         if (info->attrs[NL80211_ATTR_BANDS]) {
13095                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13096
13097                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13098                         return -EOPNOTSUPP;
13099
13100                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13101                         return -EINVAL;
13102
13103                 conf.bands = bands;
13104         }
13105
13106         err = rdev_start_nan(rdev, wdev, &conf);
13107         if (err)
13108                 return err;
13109
13110         wdev->is_running = true;
13111         rdev->opencount++;
13112
13113         return 0;
13114 }
13115
13116 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
13117 {
13118         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13119         struct wireless_dev *wdev = info->user_ptr[1];
13120
13121         if (wdev->iftype != NL80211_IFTYPE_NAN)
13122                 return -EOPNOTSUPP;
13123
13124         cfg80211_stop_nan(rdev, wdev);
13125
13126         return 0;
13127 }
13128
13129 static int validate_nan_filter(struct nlattr *filter_attr)
13130 {
13131         struct nlattr *attr;
13132         int len = 0, n_entries = 0, rem;
13133
13134         nla_for_each_nested(attr, filter_attr, rem) {
13135                 len += nla_len(attr);
13136                 n_entries++;
13137         }
13138
13139         if (len >= U8_MAX)
13140                 return -EINVAL;
13141
13142         return n_entries;
13143 }
13144
13145 static int handle_nan_filter(struct nlattr *attr_filter,
13146                              struct cfg80211_nan_func *func,
13147                              bool tx)
13148 {
13149         struct nlattr *attr;
13150         int n_entries, rem, i;
13151         struct cfg80211_nan_func_filter *filter;
13152
13153         n_entries = validate_nan_filter(attr_filter);
13154         if (n_entries < 0)
13155                 return n_entries;
13156
13157         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
13158
13159         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
13160         if (!filter)
13161                 return -ENOMEM;
13162
13163         i = 0;
13164         nla_for_each_nested(attr, attr_filter, rem) {
13165                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
13166                 filter[i].len = nla_len(attr);
13167                 i++;
13168         }
13169         if (tx) {
13170                 func->num_tx_filters = n_entries;
13171                 func->tx_filters = filter;
13172         } else {
13173                 func->num_rx_filters = n_entries;
13174                 func->rx_filters = filter;
13175         }
13176
13177         return 0;
13178 }
13179
13180 static int nl80211_nan_add_func(struct sk_buff *skb,
13181                                 struct genl_info *info)
13182 {
13183         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13184         struct wireless_dev *wdev = info->user_ptr[1];
13185         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
13186         struct cfg80211_nan_func *func;
13187         struct sk_buff *msg = NULL;
13188         void *hdr = NULL;
13189         int err = 0;
13190
13191         if (wdev->iftype != NL80211_IFTYPE_NAN)
13192                 return -EOPNOTSUPP;
13193
13194         if (!wdev_running(wdev))
13195                 return -ENOTCONN;
13196
13197         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
13198                 return -EINVAL;
13199
13200         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
13201                                           info->attrs[NL80211_ATTR_NAN_FUNC],
13202                                           nl80211_nan_func_policy,
13203                                           info->extack);
13204         if (err)
13205                 return err;
13206
13207         func = kzalloc(sizeof(*func), GFP_KERNEL);
13208         if (!func)
13209                 return -ENOMEM;
13210
13211         func->cookie = cfg80211_assign_cookie(rdev);
13212
13213         if (!tb[NL80211_NAN_FUNC_TYPE]) {
13214                 err = -EINVAL;
13215                 goto out;
13216         }
13217
13218
13219         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
13220
13221         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
13222                 err = -EINVAL;
13223                 goto out;
13224         }
13225
13226         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
13227                sizeof(func->service_id));
13228
13229         func->close_range =
13230                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
13231
13232         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13233                 func->serv_spec_info_len =
13234                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13235                 func->serv_spec_info =
13236                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13237                                 func->serv_spec_info_len,
13238                                 GFP_KERNEL);
13239                 if (!func->serv_spec_info) {
13240                         err = -ENOMEM;
13241                         goto out;
13242                 }
13243         }
13244
13245         if (tb[NL80211_NAN_FUNC_TTL])
13246                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13247
13248         switch (func->type) {
13249         case NL80211_NAN_FUNC_PUBLISH:
13250                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13251                         err = -EINVAL;
13252                         goto out;
13253                 }
13254
13255                 func->publish_type =
13256                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13257                 func->publish_bcast =
13258                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13259
13260                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13261                         func->publish_bcast) {
13262                         err = -EINVAL;
13263                         goto out;
13264                 }
13265                 break;
13266         case NL80211_NAN_FUNC_SUBSCRIBE:
13267                 func->subscribe_active =
13268                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13269                 break;
13270         case NL80211_NAN_FUNC_FOLLOW_UP:
13271                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13272                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13273                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13274                         err = -EINVAL;
13275                         goto out;
13276                 }
13277
13278                 func->followup_id =
13279                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13280                 func->followup_reqid =
13281                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13282                 memcpy(func->followup_dest.addr,
13283                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13284                        sizeof(func->followup_dest.addr));
13285                 if (func->ttl) {
13286                         err = -EINVAL;
13287                         goto out;
13288                 }
13289                 break;
13290         default:
13291                 err = -EINVAL;
13292                 goto out;
13293         }
13294
13295         if (tb[NL80211_NAN_FUNC_SRF]) {
13296                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13297
13298                 err = nla_parse_nested_deprecated(srf_tb,
13299                                                   NL80211_NAN_SRF_ATTR_MAX,
13300                                                   tb[NL80211_NAN_FUNC_SRF],
13301                                                   nl80211_nan_srf_policy,
13302                                                   info->extack);
13303                 if (err)
13304                         goto out;
13305
13306                 func->srf_include =
13307                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13308
13309                 if (srf_tb[NL80211_NAN_SRF_BF]) {
13310                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13311                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13312                                 err = -EINVAL;
13313                                 goto out;
13314                         }
13315
13316                         func->srf_bf_len =
13317                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13318                         func->srf_bf =
13319                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13320                                         func->srf_bf_len, GFP_KERNEL);
13321                         if (!func->srf_bf) {
13322                                 err = -ENOMEM;
13323                                 goto out;
13324                         }
13325
13326                         func->srf_bf_idx =
13327                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13328                 } else {
13329                         struct nlattr *attr, *mac_attr =
13330                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13331                         int n_entries, rem, i = 0;
13332
13333                         if (!mac_attr) {
13334                                 err = -EINVAL;
13335                                 goto out;
13336                         }
13337
13338                         n_entries = validate_acl_mac_addrs(mac_attr);
13339                         if (n_entries <= 0) {
13340                                 err = -EINVAL;
13341                                 goto out;
13342                         }
13343
13344                         func->srf_num_macs = n_entries;
13345                         func->srf_macs =
13346                                 kcalloc(n_entries, sizeof(*func->srf_macs),
13347                                         GFP_KERNEL);
13348                         if (!func->srf_macs) {
13349                                 err = -ENOMEM;
13350                                 goto out;
13351                         }
13352
13353                         nla_for_each_nested(attr, mac_attr, rem)
13354                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13355                                        sizeof(*func->srf_macs));
13356                 }
13357         }
13358
13359         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13360                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13361                                         func, true);
13362                 if (err)
13363                         goto out;
13364         }
13365
13366         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13367                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13368                                         func, false);
13369                 if (err)
13370                         goto out;
13371         }
13372
13373         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13374         if (!msg) {
13375                 err = -ENOMEM;
13376                 goto out;
13377         }
13378
13379         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13380                              NL80211_CMD_ADD_NAN_FUNCTION);
13381         /* This can't really happen - we just allocated 4KB */
13382         if (WARN_ON(!hdr)) {
13383                 err = -ENOMEM;
13384                 goto out;
13385         }
13386
13387         err = rdev_add_nan_func(rdev, wdev, func);
13388 out:
13389         if (err < 0) {
13390                 cfg80211_free_nan_func(func);
13391                 nlmsg_free(msg);
13392                 return err;
13393         }
13394
13395         /* propagate the instance id and cookie to userspace  */
13396         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13397                               NL80211_ATTR_PAD))
13398                 goto nla_put_failure;
13399
13400         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13401         if (!func_attr)
13402                 goto nla_put_failure;
13403
13404         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13405                        func->instance_id))
13406                 goto nla_put_failure;
13407
13408         nla_nest_end(msg, func_attr);
13409
13410         genlmsg_end(msg, hdr);
13411         return genlmsg_reply(msg, info);
13412
13413 nla_put_failure:
13414         nlmsg_free(msg);
13415         return -ENOBUFS;
13416 }
13417
13418 static int nl80211_nan_del_func(struct sk_buff *skb,
13419                                struct genl_info *info)
13420 {
13421         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13422         struct wireless_dev *wdev = info->user_ptr[1];
13423         u64 cookie;
13424
13425         if (wdev->iftype != NL80211_IFTYPE_NAN)
13426                 return -EOPNOTSUPP;
13427
13428         if (!wdev_running(wdev))
13429                 return -ENOTCONN;
13430
13431         if (!info->attrs[NL80211_ATTR_COOKIE])
13432                 return -EINVAL;
13433
13434         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13435
13436         rdev_del_nan_func(rdev, wdev, cookie);
13437
13438         return 0;
13439 }
13440
13441 static int nl80211_nan_change_config(struct sk_buff *skb,
13442                                      struct genl_info *info)
13443 {
13444         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13445         struct wireless_dev *wdev = info->user_ptr[1];
13446         struct cfg80211_nan_conf conf = {};
13447         u32 changed = 0;
13448
13449         if (wdev->iftype != NL80211_IFTYPE_NAN)
13450                 return -EOPNOTSUPP;
13451
13452         if (!wdev_running(wdev))
13453                 return -ENOTCONN;
13454
13455         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13456                 conf.master_pref =
13457                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13458                 if (conf.master_pref <= 1 || conf.master_pref == 255)
13459                         return -EINVAL;
13460
13461                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13462         }
13463
13464         if (info->attrs[NL80211_ATTR_BANDS]) {
13465                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13466
13467                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13468                         return -EOPNOTSUPP;
13469
13470                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13471                         return -EINVAL;
13472
13473                 conf.bands = bands;
13474                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13475         }
13476
13477         if (!changed)
13478                 return -EINVAL;
13479
13480         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13481 }
13482
13483 void cfg80211_nan_match(struct wireless_dev *wdev,
13484                         struct cfg80211_nan_match_params *match, gfp_t gfp)
13485 {
13486         struct wiphy *wiphy = wdev->wiphy;
13487         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13488         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13489         struct sk_buff *msg;
13490         void *hdr;
13491
13492         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13493                 return;
13494
13495         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13496         if (!msg)
13497                 return;
13498
13499         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13500         if (!hdr) {
13501                 nlmsg_free(msg);
13502                 return;
13503         }
13504
13505         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13506             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13507                                          wdev->netdev->ifindex)) ||
13508             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13509                               NL80211_ATTR_PAD))
13510                 goto nla_put_failure;
13511
13512         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13513                               NL80211_ATTR_PAD) ||
13514             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13515                 goto nla_put_failure;
13516
13517         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13518         if (!match_attr)
13519                 goto nla_put_failure;
13520
13521         local_func_attr = nla_nest_start_noflag(msg,
13522                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
13523         if (!local_func_attr)
13524                 goto nla_put_failure;
13525
13526         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13527                 goto nla_put_failure;
13528
13529         nla_nest_end(msg, local_func_attr);
13530
13531         peer_func_attr = nla_nest_start_noflag(msg,
13532                                                NL80211_NAN_MATCH_FUNC_PEER);
13533         if (!peer_func_attr)
13534                 goto nla_put_failure;
13535
13536         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13537             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13538                 goto nla_put_failure;
13539
13540         if (match->info && match->info_len &&
13541             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13542                     match->info))
13543                 goto nla_put_failure;
13544
13545         nla_nest_end(msg, peer_func_attr);
13546         nla_nest_end(msg, match_attr);
13547         genlmsg_end(msg, hdr);
13548
13549         if (!wdev->owner_nlportid)
13550                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13551                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13552         else
13553                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13554                                 wdev->owner_nlportid);
13555
13556         return;
13557
13558 nla_put_failure:
13559         nlmsg_free(msg);
13560 }
13561 EXPORT_SYMBOL(cfg80211_nan_match);
13562
13563 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13564                                   u8 inst_id,
13565                                   enum nl80211_nan_func_term_reason reason,
13566                                   u64 cookie, gfp_t gfp)
13567 {
13568         struct wiphy *wiphy = wdev->wiphy;
13569         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13570         struct sk_buff *msg;
13571         struct nlattr *func_attr;
13572         void *hdr;
13573
13574         if (WARN_ON(!inst_id))
13575                 return;
13576
13577         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13578         if (!msg)
13579                 return;
13580
13581         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13582         if (!hdr) {
13583                 nlmsg_free(msg);
13584                 return;
13585         }
13586
13587         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13588             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13589                                          wdev->netdev->ifindex)) ||
13590             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13591                               NL80211_ATTR_PAD))
13592                 goto nla_put_failure;
13593
13594         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13595                               NL80211_ATTR_PAD))
13596                 goto nla_put_failure;
13597
13598         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13599         if (!func_attr)
13600                 goto nla_put_failure;
13601
13602         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13603             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13604                 goto nla_put_failure;
13605
13606         nla_nest_end(msg, func_attr);
13607         genlmsg_end(msg, hdr);
13608
13609         if (!wdev->owner_nlportid)
13610                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13611                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13612         else
13613                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13614                                 wdev->owner_nlportid);
13615
13616         return;
13617
13618 nla_put_failure:
13619         nlmsg_free(msg);
13620 }
13621 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13622
13623 static int nl80211_get_protocol_features(struct sk_buff *skb,
13624                                          struct genl_info *info)
13625 {
13626         void *hdr;
13627         struct sk_buff *msg;
13628
13629         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13630         if (!msg)
13631                 return -ENOMEM;
13632
13633         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13634                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13635         if (!hdr)
13636                 goto nla_put_failure;
13637
13638         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13639                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13640                 goto nla_put_failure;
13641
13642         genlmsg_end(msg, hdr);
13643         return genlmsg_reply(msg, info);
13644
13645  nla_put_failure:
13646         kfree_skb(msg);
13647         return -ENOBUFS;
13648 }
13649
13650 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13651 {
13652         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13653         struct cfg80211_update_ft_ies_params ft_params;
13654         struct net_device *dev = info->user_ptr[1];
13655
13656         if (!rdev->ops->update_ft_ies)
13657                 return -EOPNOTSUPP;
13658
13659         if (!info->attrs[NL80211_ATTR_MDID] ||
13660             !info->attrs[NL80211_ATTR_IE])
13661                 return -EINVAL;
13662
13663         memset(&ft_params, 0, sizeof(ft_params));
13664         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13665         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13666         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13667
13668         return rdev_update_ft_ies(rdev, dev, &ft_params);
13669 }
13670
13671 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13672                                        struct genl_info *info)
13673 {
13674         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13675         struct wireless_dev *wdev = info->user_ptr[1];
13676         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13677         u16 duration;
13678         int ret;
13679
13680         if (!rdev->ops->crit_proto_start)
13681                 return -EOPNOTSUPP;
13682
13683         if (WARN_ON(!rdev->ops->crit_proto_stop))
13684                 return -EINVAL;
13685
13686         if (rdev->crit_proto_nlportid)
13687                 return -EBUSY;
13688
13689         /* determine protocol if provided */
13690         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13691                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13692
13693         if (proto >= NUM_NL80211_CRIT_PROTO)
13694                 return -EINVAL;
13695
13696         /* timeout must be provided */
13697         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13698                 return -EINVAL;
13699
13700         duration =
13701                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13702
13703         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13704         if (!ret)
13705                 rdev->crit_proto_nlportid = info->snd_portid;
13706
13707         return ret;
13708 }
13709
13710 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13711                                       struct genl_info *info)
13712 {
13713         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13714         struct wireless_dev *wdev = info->user_ptr[1];
13715
13716         if (!rdev->ops->crit_proto_stop)
13717                 return -EOPNOTSUPP;
13718
13719         if (rdev->crit_proto_nlportid) {
13720                 rdev->crit_proto_nlportid = 0;
13721                 rdev_crit_proto_stop(rdev, wdev);
13722         }
13723         return 0;
13724 }
13725
13726 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13727                                        struct nlattr *attr,
13728                                        struct netlink_ext_ack *extack)
13729 {
13730         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13731                 if (attr->nla_type & NLA_F_NESTED) {
13732                         NL_SET_ERR_MSG_ATTR(extack, attr,
13733                                             "unexpected nested data");
13734                         return -EINVAL;
13735                 }
13736
13737                 return 0;
13738         }
13739
13740         if (!(attr->nla_type & NLA_F_NESTED)) {
13741                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13742                 return -EINVAL;
13743         }
13744
13745         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13746 }
13747
13748 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13749 {
13750         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13751         struct wireless_dev *wdev =
13752                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
13753                                            info->attrs);
13754         int i, err;
13755         u32 vid, subcmd;
13756
13757         if (!rdev->wiphy.vendor_commands)
13758                 return -EOPNOTSUPP;
13759
13760         if (IS_ERR(wdev)) {
13761                 err = PTR_ERR(wdev);
13762                 if (err != -EINVAL)
13763                         return err;
13764                 wdev = NULL;
13765         } else if (wdev->wiphy != &rdev->wiphy) {
13766                 return -EINVAL;
13767         }
13768
13769         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13770             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13771                 return -EINVAL;
13772
13773         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13774         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13775         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13776                 const struct wiphy_vendor_command *vcmd;
13777                 void *data = NULL;
13778                 int len = 0;
13779
13780                 vcmd = &rdev->wiphy.vendor_commands[i];
13781
13782                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13783                         continue;
13784
13785                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13786                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13787                         if (!wdev)
13788                                 return -EINVAL;
13789                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13790                             !wdev->netdev)
13791                                 return -EINVAL;
13792
13793                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13794                                 if (!wdev_running(wdev))
13795                                         return -ENETDOWN;
13796                         }
13797                 } else {
13798                         wdev = NULL;
13799                 }
13800
13801                 if (!vcmd->doit)
13802                         return -EOPNOTSUPP;
13803
13804                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13805                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13806                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13807
13808                         err = nl80211_vendor_check_policy(vcmd,
13809                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13810                                         info->extack);
13811                         if (err)
13812                                 return err;
13813                 }
13814
13815                 rdev->cur_cmd_info = info;
13816                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13817                 rdev->cur_cmd_info = NULL;
13818                 return err;
13819         }
13820
13821         return -EOPNOTSUPP;
13822 }
13823
13824 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13825                                        struct netlink_callback *cb,
13826                                        struct cfg80211_registered_device **rdev,
13827                                        struct wireless_dev **wdev)
13828 {
13829         struct nlattr **attrbuf;
13830         u32 vid, subcmd;
13831         unsigned int i;
13832         int vcmd_idx = -1;
13833         int err;
13834         void *data = NULL;
13835         unsigned int data_len = 0;
13836
13837         if (cb->args[0]) {
13838                 /* subtract the 1 again here */
13839                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13840                 struct wireless_dev *tmp;
13841
13842                 if (!wiphy)
13843                         return -ENODEV;
13844                 *rdev = wiphy_to_rdev(wiphy);
13845                 *wdev = NULL;
13846
13847                 if (cb->args[1]) {
13848                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13849                                 if (tmp->identifier == cb->args[1] - 1) {
13850                                         *wdev = tmp;
13851                                         break;
13852                                 }
13853                         }
13854                 }
13855
13856                 /* keep rtnl locked in successful case */
13857                 return 0;
13858         }
13859
13860         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13861         if (!attrbuf)
13862                 return -ENOMEM;
13863
13864         err = nlmsg_parse_deprecated(cb->nlh,
13865                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13866                                      attrbuf, nl80211_fam.maxattr,
13867                                      nl80211_policy, NULL);
13868         if (err)
13869                 goto out;
13870
13871         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13872             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13873                 err = -EINVAL;
13874                 goto out;
13875         }
13876
13877         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
13878         if (IS_ERR(*wdev))
13879                 *wdev = NULL;
13880
13881         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13882         if (IS_ERR(*rdev)) {
13883                 err = PTR_ERR(*rdev);
13884                 goto out;
13885         }
13886
13887         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13888         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13889
13890         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13891                 const struct wiphy_vendor_command *vcmd;
13892
13893                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13894
13895                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13896                         continue;
13897
13898                 if (!vcmd->dumpit) {
13899                         err = -EOPNOTSUPP;
13900                         goto out;
13901                 }
13902
13903                 vcmd_idx = i;
13904                 break;
13905         }
13906
13907         if (vcmd_idx < 0) {
13908                 err = -EOPNOTSUPP;
13909                 goto out;
13910         }
13911
13912         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13913                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13914                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13915
13916                 err = nl80211_vendor_check_policy(
13917                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13918                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13919                                 cb->extack);
13920                 if (err)
13921                         goto out;
13922         }
13923
13924         /* 0 is the first index - add 1 to parse only once */
13925         cb->args[0] = (*rdev)->wiphy_idx + 1;
13926         /* add 1 to know if it was NULL */
13927         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13928         cb->args[2] = vcmd_idx;
13929         cb->args[3] = (unsigned long)data;
13930         cb->args[4] = data_len;
13931
13932         /* keep rtnl locked in successful case */
13933         err = 0;
13934 out:
13935         kfree(attrbuf);
13936         return err;
13937 }
13938
13939 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13940                                    struct netlink_callback *cb)
13941 {
13942         struct cfg80211_registered_device *rdev;
13943         struct wireless_dev *wdev;
13944         unsigned int vcmd_idx;
13945         const struct wiphy_vendor_command *vcmd;
13946         void *data;
13947         int data_len;
13948         int err;
13949         struct nlattr *vendor_data;
13950
13951         rtnl_lock();
13952         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13953         if (err)
13954                 goto out;
13955
13956         vcmd_idx = cb->args[2];
13957         data = (void *)cb->args[3];
13958         data_len = cb->args[4];
13959         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13960
13961         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13962                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13963                 if (!wdev) {
13964                         err = -EINVAL;
13965                         goto out;
13966                 }
13967                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13968                     !wdev->netdev) {
13969                         err = -EINVAL;
13970                         goto out;
13971                 }
13972
13973                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13974                         if (!wdev_running(wdev)) {
13975                                 err = -ENETDOWN;
13976                                 goto out;
13977                         }
13978                 }
13979         }
13980
13981         while (1) {
13982                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13983                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13984                                            NL80211_CMD_VENDOR);
13985                 if (!hdr)
13986                         break;
13987
13988                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13989                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13990                                                wdev_id(wdev),
13991                                                NL80211_ATTR_PAD))) {
13992                         genlmsg_cancel(skb, hdr);
13993                         break;
13994                 }
13995
13996                 vendor_data = nla_nest_start_noflag(skb,
13997                                                     NL80211_ATTR_VENDOR_DATA);
13998                 if (!vendor_data) {
13999                         genlmsg_cancel(skb, hdr);
14000                         break;
14001                 }
14002
14003                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
14004                                    (unsigned long *)&cb->args[5]);
14005                 nla_nest_end(skb, vendor_data);
14006
14007                 if (err == -ENOBUFS || err == -ENOENT) {
14008                         genlmsg_cancel(skb, hdr);
14009                         break;
14010                 } else if (err <= 0) {
14011                         genlmsg_cancel(skb, hdr);
14012                         goto out;
14013                 }
14014
14015                 genlmsg_end(skb, hdr);
14016         }
14017
14018         err = skb->len;
14019  out:
14020         rtnl_unlock();
14021         return err;
14022 }
14023
14024 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14025                                            enum nl80211_commands cmd,
14026                                            enum nl80211_attrs attr,
14027                                            int approxlen)
14028 {
14029         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14030
14031         if (WARN_ON(!rdev->cur_cmd_info))
14032                 return NULL;
14033
14034         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14035                                            rdev->cur_cmd_info->snd_portid,
14036                                            rdev->cur_cmd_info->snd_seq,
14037                                            cmd, attr, NULL, GFP_KERNEL);
14038 }
14039 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14040
14041 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14042 {
14043         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14044         void *hdr = ((void **)skb->cb)[1];
14045         struct nlattr *data = ((void **)skb->cb)[2];
14046
14047         /* clear CB data for netlink core to own from now on */
14048         memset(skb->cb, 0, sizeof(skb->cb));
14049
14050         if (WARN_ON(!rdev->cur_cmd_info)) {
14051                 kfree_skb(skb);
14052                 return -EINVAL;
14053         }
14054
14055         nla_nest_end(skb, data);
14056         genlmsg_end(skb, hdr);
14057         return genlmsg_reply(skb, rdev->cur_cmd_info);
14058 }
14059 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14060
14061 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14062 {
14063         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14064
14065         if (WARN_ON(!rdev->cur_cmd_info))
14066                 return 0;
14067
14068         return rdev->cur_cmd_info->snd_portid;
14069 }
14070 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
14071
14072 static int nl80211_set_qos_map(struct sk_buff *skb,
14073                                struct genl_info *info)
14074 {
14075         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14076         struct cfg80211_qos_map *qos_map = NULL;
14077         struct net_device *dev = info->user_ptr[1];
14078         u8 *pos, len, num_des, des_len, des;
14079         int ret;
14080
14081         if (!rdev->ops->set_qos_map)
14082                 return -EOPNOTSUPP;
14083
14084         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
14085                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
14086                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
14087
14088                 if (len % 2)
14089                         return -EINVAL;
14090
14091                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
14092                 if (!qos_map)
14093                         return -ENOMEM;
14094
14095                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
14096                 if (num_des) {
14097                         des_len = num_des *
14098                                 sizeof(struct cfg80211_dscp_exception);
14099                         memcpy(qos_map->dscp_exception, pos, des_len);
14100                         qos_map->num_des = num_des;
14101                         for (des = 0; des < num_des; des++) {
14102                                 if (qos_map->dscp_exception[des].up > 7) {
14103                                         kfree(qos_map);
14104                                         return -EINVAL;
14105                                 }
14106                         }
14107                         pos += des_len;
14108                 }
14109                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
14110         }
14111
14112         wdev_lock(dev->ieee80211_ptr);
14113         ret = nl80211_key_allowed(dev->ieee80211_ptr);
14114         if (!ret)
14115                 ret = rdev_set_qos_map(rdev, dev, qos_map);
14116         wdev_unlock(dev->ieee80211_ptr);
14117
14118         kfree(qos_map);
14119         return ret;
14120 }
14121
14122 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
14123 {
14124         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14125         struct net_device *dev = info->user_ptr[1];
14126         struct wireless_dev *wdev = dev->ieee80211_ptr;
14127         const u8 *peer;
14128         u8 tsid, up;
14129         u16 admitted_time = 0;
14130         int err;
14131
14132         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
14133                 return -EOPNOTSUPP;
14134
14135         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
14136             !info->attrs[NL80211_ATTR_USER_PRIO])
14137                 return -EINVAL;
14138
14139         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14140         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
14141
14142         /* WMM uses TIDs 0-7 even for TSPEC */
14143         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
14144                 /* TODO: handle 802.11 TSPEC/admission control
14145                  * need more attributes for that (e.g. BA session requirement);
14146                  * change the WMM adminssion test above to allow both then
14147                  */
14148                 return -EINVAL;
14149         }
14150
14151         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14152
14153         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
14154                 admitted_time =
14155                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
14156                 if (!admitted_time)
14157                         return -EINVAL;
14158         }
14159
14160         wdev_lock(wdev);
14161         switch (wdev->iftype) {
14162         case NL80211_IFTYPE_STATION:
14163         case NL80211_IFTYPE_P2P_CLIENT:
14164                 if (wdev->current_bss)
14165                         break;
14166                 err = -ENOTCONN;
14167                 goto out;
14168         default:
14169                 err = -EOPNOTSUPP;
14170                 goto out;
14171         }
14172
14173         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
14174
14175  out:
14176         wdev_unlock(wdev);
14177         return err;
14178 }
14179
14180 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
14181 {
14182         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14183         struct net_device *dev = info->user_ptr[1];
14184         struct wireless_dev *wdev = dev->ieee80211_ptr;
14185         const u8 *peer;
14186         u8 tsid;
14187         int err;
14188
14189         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
14190                 return -EINVAL;
14191
14192         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14193         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14194
14195         wdev_lock(wdev);
14196         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
14197         wdev_unlock(wdev);
14198
14199         return err;
14200 }
14201
14202 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
14203                                        struct genl_info *info)
14204 {
14205         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14206         struct net_device *dev = info->user_ptr[1];
14207         struct wireless_dev *wdev = dev->ieee80211_ptr;
14208         struct cfg80211_chan_def chandef = {};
14209         const u8 *addr;
14210         u8 oper_class;
14211         int err;
14212
14213         if (!rdev->ops->tdls_channel_switch ||
14214             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14215                 return -EOPNOTSUPP;
14216
14217         switch (dev->ieee80211_ptr->iftype) {
14218         case NL80211_IFTYPE_STATION:
14219         case NL80211_IFTYPE_P2P_CLIENT:
14220                 break;
14221         default:
14222                 return -EOPNOTSUPP;
14223         }
14224
14225         if (!info->attrs[NL80211_ATTR_MAC] ||
14226             !info->attrs[NL80211_ATTR_OPER_CLASS])
14227                 return -EINVAL;
14228
14229         err = nl80211_parse_chandef(rdev, info, &chandef);
14230         if (err)
14231                 return err;
14232
14233         /*
14234          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14235          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14236          * specification is not defined for them.
14237          */
14238         if (chandef.chan->band == NL80211_BAND_2GHZ &&
14239             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14240             chandef.width != NL80211_CHAN_WIDTH_20)
14241                 return -EINVAL;
14242
14243         /* we will be active on the TDLS link */
14244         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14245                                            wdev->iftype))
14246                 return -EINVAL;
14247
14248         /* don't allow switching to DFS channels */
14249         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14250                 return -EINVAL;
14251
14252         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14253         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14254
14255         wdev_lock(wdev);
14256         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14257         wdev_unlock(wdev);
14258
14259         return err;
14260 }
14261
14262 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14263                                               struct genl_info *info)
14264 {
14265         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14266         struct net_device *dev = info->user_ptr[1];
14267         struct wireless_dev *wdev = dev->ieee80211_ptr;
14268         const u8 *addr;
14269
14270         if (!rdev->ops->tdls_channel_switch ||
14271             !rdev->ops->tdls_cancel_channel_switch ||
14272             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14273                 return -EOPNOTSUPP;
14274
14275         switch (dev->ieee80211_ptr->iftype) {
14276         case NL80211_IFTYPE_STATION:
14277         case NL80211_IFTYPE_P2P_CLIENT:
14278                 break;
14279         default:
14280                 return -EOPNOTSUPP;
14281         }
14282
14283         if (!info->attrs[NL80211_ATTR_MAC])
14284                 return -EINVAL;
14285
14286         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14287
14288         wdev_lock(wdev);
14289         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14290         wdev_unlock(wdev);
14291
14292         return 0;
14293 }
14294
14295 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14296                                             struct genl_info *info)
14297 {
14298         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14299         struct net_device *dev = info->user_ptr[1];
14300         struct wireless_dev *wdev = dev->ieee80211_ptr;
14301         const struct nlattr *nla;
14302         bool enabled;
14303
14304         if (!rdev->ops->set_multicast_to_unicast)
14305                 return -EOPNOTSUPP;
14306
14307         if (wdev->iftype != NL80211_IFTYPE_AP &&
14308             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14309                 return -EOPNOTSUPP;
14310
14311         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14312         enabled = nla_get_flag(nla);
14313
14314         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14315 }
14316
14317 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14318 {
14319         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14320         struct net_device *dev = info->user_ptr[1];
14321         struct wireless_dev *wdev = dev->ieee80211_ptr;
14322         struct cfg80211_pmk_conf pmk_conf = {};
14323         int ret;
14324
14325         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14326             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14327                 return -EOPNOTSUPP;
14328
14329         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14330                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14331                 return -EOPNOTSUPP;
14332
14333         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14334                 return -EINVAL;
14335
14336         wdev_lock(wdev);
14337         if (!wdev->current_bss) {
14338                 ret = -ENOTCONN;
14339                 goto out;
14340         }
14341
14342         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14343         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14344                 ret = -EINVAL;
14345                 goto out;
14346         }
14347
14348         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14349         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14350         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14351             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14352                 ret = -EINVAL;
14353                 goto out;
14354         }
14355
14356         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14357                 pmk_conf.pmk_r0_name =
14358                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14359
14360         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14361 out:
14362         wdev_unlock(wdev);
14363         return ret;
14364 }
14365
14366 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14367 {
14368         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14369         struct net_device *dev = info->user_ptr[1];
14370         struct wireless_dev *wdev = dev->ieee80211_ptr;
14371         const u8 *aa;
14372         int ret;
14373
14374         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14375             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14376                 return -EOPNOTSUPP;
14377
14378         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14379                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14380                 return -EOPNOTSUPP;
14381
14382         if (!info->attrs[NL80211_ATTR_MAC])
14383                 return -EINVAL;
14384
14385         wdev_lock(wdev);
14386         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14387         ret = rdev_del_pmk(rdev, dev, aa);
14388         wdev_unlock(wdev);
14389
14390         return ret;
14391 }
14392
14393 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14394 {
14395         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14396         struct net_device *dev = info->user_ptr[1];
14397         struct cfg80211_external_auth_params params;
14398
14399         if (!rdev->ops->external_auth)
14400                 return -EOPNOTSUPP;
14401
14402         if (!info->attrs[NL80211_ATTR_SSID] &&
14403             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14404             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14405                 return -EINVAL;
14406
14407         if (!info->attrs[NL80211_ATTR_BSSID])
14408                 return -EINVAL;
14409
14410         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14411                 return -EINVAL;
14412
14413         memset(&params, 0, sizeof(params));
14414
14415         if (info->attrs[NL80211_ATTR_SSID]) {
14416                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14417                 if (params.ssid.ssid_len == 0)
14418                         return -EINVAL;
14419                 memcpy(params.ssid.ssid,
14420                        nla_data(info->attrs[NL80211_ATTR_SSID]),
14421                        params.ssid.ssid_len);
14422         }
14423
14424         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14425                ETH_ALEN);
14426
14427         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14428
14429         if (info->attrs[NL80211_ATTR_PMKID])
14430                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14431
14432         return rdev_external_auth(rdev, dev, &params);
14433 }
14434
14435 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14436 {
14437         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14438         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14439         struct net_device *dev = info->user_ptr[1];
14440         struct wireless_dev *wdev = dev->ieee80211_ptr;
14441         const u8 *buf;
14442         size_t len;
14443         u8 *dest;
14444         u16 proto;
14445         bool noencrypt;
14446         u64 cookie = 0;
14447         int err;
14448
14449         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14450                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14451                 return -EOPNOTSUPP;
14452
14453         if (!rdev->ops->tx_control_port)
14454                 return -EOPNOTSUPP;
14455
14456         if (!info->attrs[NL80211_ATTR_FRAME] ||
14457             !info->attrs[NL80211_ATTR_MAC] ||
14458             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14459                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14460                 return -EINVAL;
14461         }
14462
14463         wdev_lock(wdev);
14464
14465         switch (wdev->iftype) {
14466         case NL80211_IFTYPE_AP:
14467         case NL80211_IFTYPE_P2P_GO:
14468         case NL80211_IFTYPE_MESH_POINT:
14469                 break;
14470         case NL80211_IFTYPE_ADHOC:
14471         case NL80211_IFTYPE_STATION:
14472         case NL80211_IFTYPE_P2P_CLIENT:
14473                 if (wdev->current_bss)
14474                         break;
14475                 err = -ENOTCONN;
14476                 goto out;
14477         default:
14478                 err = -EOPNOTSUPP;
14479                 goto out;
14480         }
14481
14482         wdev_unlock(wdev);
14483
14484         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14485         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14486         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14487         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14488         noencrypt =
14489                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14490
14491         err = rdev_tx_control_port(rdev, dev, buf, len,
14492                                    dest, cpu_to_be16(proto), noencrypt,
14493                                    dont_wait_for_ack ? NULL : &cookie);
14494         if (!err && !dont_wait_for_ack)
14495                 nl_set_extack_cookie_u64(info->extack, cookie);
14496         return err;
14497  out:
14498         wdev_unlock(wdev);
14499         return err;
14500 }
14501
14502 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14503                                            struct genl_info *info)
14504 {
14505         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14506         struct net_device *dev = info->user_ptr[1];
14507         struct wireless_dev *wdev = dev->ieee80211_ptr;
14508         struct cfg80211_ftm_responder_stats ftm_stats = {};
14509         struct sk_buff *msg;
14510         void *hdr;
14511         struct nlattr *ftm_stats_attr;
14512         int err;
14513
14514         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14515                 return -EOPNOTSUPP;
14516
14517         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14518         if (err)
14519                 return err;
14520
14521         if (!ftm_stats.filled)
14522                 return -ENODATA;
14523
14524         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14525         if (!msg)
14526                 return -ENOMEM;
14527
14528         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14529                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14530         if (!hdr)
14531                 goto nla_put_failure;
14532
14533         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14534                 goto nla_put_failure;
14535
14536         ftm_stats_attr = nla_nest_start_noflag(msg,
14537                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14538         if (!ftm_stats_attr)
14539                 goto nla_put_failure;
14540
14541 #define SET_FTM(field, name, type)                                       \
14542         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14543             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14544                              ftm_stats.field))                           \
14545                 goto nla_put_failure; } while (0)
14546 #define SET_FTM_U64(field, name)                                         \
14547         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14548             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14549                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14550                 goto nla_put_failure; } while (0)
14551
14552         SET_FTM(success_num, SUCCESS_NUM, u32);
14553         SET_FTM(partial_num, PARTIAL_NUM, u32);
14554         SET_FTM(failed_num, FAILED_NUM, u32);
14555         SET_FTM(asap_num, ASAP_NUM, u32);
14556         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14557         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14558         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14559         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14560         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14561 #undef SET_FTM
14562
14563         nla_nest_end(msg, ftm_stats_attr);
14564
14565         genlmsg_end(msg, hdr);
14566         return genlmsg_reply(msg, info);
14567
14568 nla_put_failure:
14569         nlmsg_free(msg);
14570         return -ENOBUFS;
14571 }
14572
14573 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14574 {
14575         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14576         struct cfg80211_update_owe_info owe_info;
14577         struct net_device *dev = info->user_ptr[1];
14578
14579         if (!rdev->ops->update_owe_info)
14580                 return -EOPNOTSUPP;
14581
14582         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14583             !info->attrs[NL80211_ATTR_MAC])
14584                 return -EINVAL;
14585
14586         memset(&owe_info, 0, sizeof(owe_info));
14587         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14588         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14589
14590         if (info->attrs[NL80211_ATTR_IE]) {
14591                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14592                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14593         }
14594
14595         return rdev_update_owe_info(rdev, dev, &owe_info);
14596 }
14597
14598 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14599 {
14600         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14601         struct net_device *dev = info->user_ptr[1];
14602         struct wireless_dev *wdev = dev->ieee80211_ptr;
14603         struct station_info sinfo = {};
14604         const u8 *buf;
14605         size_t len;
14606         u8 *dest;
14607         int err;
14608
14609         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14610                 return -EOPNOTSUPP;
14611
14612         if (!info->attrs[NL80211_ATTR_MAC] ||
14613             !info->attrs[NL80211_ATTR_FRAME]) {
14614                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14615                 return -EINVAL;
14616         }
14617
14618         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14619                 return -EOPNOTSUPP;
14620
14621         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14622         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14623         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14624
14625         if (len < sizeof(struct ethhdr))
14626                 return -EINVAL;
14627
14628         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14629             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14630                 return -EINVAL;
14631
14632         err = rdev_get_station(rdev, dev, dest, &sinfo);
14633         if (err)
14634                 return err;
14635
14636         cfg80211_sinfo_release_content(&sinfo);
14637
14638         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14639 }
14640
14641 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14642                           struct nlattr *attrs[], struct net_device *dev,
14643                           struct cfg80211_tid_cfg *tid_conf,
14644                           struct genl_info *info, const u8 *peer)
14645 {
14646         struct netlink_ext_ack *extack = info->extack;
14647         u64 mask;
14648         int err;
14649
14650         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14651                 return -EINVAL;
14652
14653         tid_conf->config_override =
14654                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14655         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14656
14657         if (tid_conf->config_override) {
14658                 if (rdev->ops->reset_tid_config) {
14659                         err = rdev_reset_tid_config(rdev, dev, peer,
14660                                                     tid_conf->tids);
14661                         if (err)
14662                                 return err;
14663                 } else {
14664                         return -EINVAL;
14665                 }
14666         }
14667
14668         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14669                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14670                 tid_conf->noack =
14671                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14672         }
14673
14674         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14675                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14676                 tid_conf->retry_short =
14677                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14678
14679                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14680                         return -EINVAL;
14681         }
14682
14683         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14684                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14685                 tid_conf->retry_long =
14686                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14687
14688                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14689                         return -EINVAL;
14690         }
14691
14692         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14693                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14694                 tid_conf->ampdu =
14695                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14696         }
14697
14698         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14699                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14700                 tid_conf->rtscts =
14701                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14702         }
14703
14704         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14705                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14706                 tid_conf->amsdu =
14707                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14708         }
14709
14710         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14711                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14712
14713                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14714
14715                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14716                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14717                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14718                                                     &tid_conf->txrate_mask, dev,
14719                                                     true);
14720                         if (err)
14721                                 return err;
14722
14723                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14724                 }
14725                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14726         }
14727
14728         if (peer)
14729                 mask = rdev->wiphy.tid_config_support.peer;
14730         else
14731                 mask = rdev->wiphy.tid_config_support.vif;
14732
14733         if (tid_conf->mask & ~mask) {
14734                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14735                 return -ENOTSUPP;
14736         }
14737
14738         return 0;
14739 }
14740
14741 static int nl80211_set_tid_config(struct sk_buff *skb,
14742                                   struct genl_info *info)
14743 {
14744         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14745         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14746         struct net_device *dev = info->user_ptr[1];
14747         struct cfg80211_tid_config *tid_config;
14748         struct nlattr *tid;
14749         int conf_idx = 0, rem_conf;
14750         int ret = -EINVAL;
14751         u32 num_conf = 0;
14752
14753         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14754                 return -EINVAL;
14755
14756         if (!rdev->ops->set_tid_config)
14757                 return -EOPNOTSUPP;
14758
14759         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14760                             rem_conf)
14761                 num_conf++;
14762
14763         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14764                              GFP_KERNEL);
14765         if (!tid_config)
14766                 return -ENOMEM;
14767
14768         tid_config->n_tid_conf = num_conf;
14769
14770         if (info->attrs[NL80211_ATTR_MAC])
14771                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14772
14773         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14774                             rem_conf) {
14775                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14776                                        tid, NULL, NULL);
14777
14778                 if (ret)
14779                         goto bad_tid_conf;
14780
14781                 ret = parse_tid_conf(rdev, attrs, dev,
14782                                      &tid_config->tid_conf[conf_idx],
14783                                      info, tid_config->peer);
14784                 if (ret)
14785                         goto bad_tid_conf;
14786
14787                 conf_idx++;
14788         }
14789
14790         ret = rdev_set_tid_config(rdev, dev, tid_config);
14791
14792 bad_tid_conf:
14793         kfree(tid_config);
14794         return ret;
14795 }
14796
14797 #define NL80211_FLAG_NEED_WIPHY         0x01
14798 #define NL80211_FLAG_NEED_NETDEV        0x02
14799 #define NL80211_FLAG_NEED_RTNL          0x04
14800 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14801 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14802                                          NL80211_FLAG_CHECK_NETDEV_UP)
14803 #define NL80211_FLAG_NEED_WDEV          0x10
14804 /* If a netdev is associated, it must be UP, P2P must be started */
14805 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14806                                          NL80211_FLAG_CHECK_NETDEV_UP)
14807 #define NL80211_FLAG_CLEAR_SKB          0x20
14808 #define NL80211_FLAG_NO_WIPHY_MTX       0x40
14809
14810 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14811                             struct genl_info *info)
14812 {
14813         struct cfg80211_registered_device *rdev = NULL;
14814         struct wireless_dev *wdev;
14815         struct net_device *dev;
14816
14817         rtnl_lock();
14818         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14819                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14820                 if (IS_ERR(rdev)) {
14821                         rtnl_unlock();
14822                         return PTR_ERR(rdev);
14823                 }
14824                 info->user_ptr[0] = rdev;
14825         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14826                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14827                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
14828                                                   info->attrs);
14829                 if (IS_ERR(wdev)) {
14830                         rtnl_unlock();
14831                         return PTR_ERR(wdev);
14832                 }
14833
14834                 dev = wdev->netdev;
14835                 rdev = wiphy_to_rdev(wdev->wiphy);
14836
14837                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14838                         if (!dev) {
14839                                 rtnl_unlock();
14840                                 return -EINVAL;
14841                         }
14842
14843                         info->user_ptr[1] = dev;
14844                 } else {
14845                         info->user_ptr[1] = wdev;
14846                 }
14847
14848                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14849                     !wdev_running(wdev)) {
14850                         rtnl_unlock();
14851                         return -ENETDOWN;
14852                 }
14853
14854                 if (dev)
14855                         dev_hold(dev);
14856
14857                 info->user_ptr[0] = rdev;
14858         }
14859
14860         if (rdev && !(ops->internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
14861                 wiphy_lock(&rdev->wiphy);
14862                 /* we keep the mutex locked until post_doit */
14863                 __release(&rdev->wiphy.mtx);
14864         }
14865         if (!(ops->internal_flags & NL80211_FLAG_NEED_RTNL))
14866                 rtnl_unlock();
14867
14868         return 0;
14869 }
14870
14871 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14872                               struct genl_info *info)
14873 {
14874         if (info->user_ptr[1]) {
14875                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14876                         struct wireless_dev *wdev = info->user_ptr[1];
14877
14878                         if (wdev->netdev)
14879                                 dev_put(wdev->netdev);
14880                 } else {
14881                         dev_put(info->user_ptr[1]);
14882                 }
14883         }
14884
14885         if (info->user_ptr[0] &&
14886             !(ops->internal_flags & NL80211_FLAG_NO_WIPHY_MTX)) {
14887                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14888
14889                 /* we kept the mutex locked since pre_doit */
14890                 __acquire(&rdev->wiphy.mtx);
14891                 wiphy_unlock(&rdev->wiphy);
14892         }
14893
14894         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14895                 rtnl_unlock();
14896
14897         /* If needed, clear the netlink message payload from the SKB
14898          * as it might contain key data that shouldn't stick around on
14899          * the heap after the SKB is freed. The netlink message header
14900          * is still needed for further processing, so leave it intact.
14901          */
14902         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14903                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14904
14905                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14906         }
14907 }
14908
14909 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
14910                                      struct cfg80211_sar_specs *sar_specs,
14911                                      struct nlattr *spec[], int index)
14912 {
14913         u32 range_index, i;
14914
14915         if (!sar_specs || !spec)
14916                 return -EINVAL;
14917
14918         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
14919             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
14920                 return -EINVAL;
14921
14922         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
14923
14924         /* check if range_index exceeds num_freq_ranges */
14925         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
14926                 return -EINVAL;
14927
14928         /* check if range_index duplicates */
14929         for (i = 0; i < index; i++) {
14930                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
14931                         return -EINVAL;
14932         }
14933
14934         sar_specs->sub_specs[index].power =
14935                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
14936
14937         sar_specs->sub_specs[index].freq_range_index = range_index;
14938
14939         return 0;
14940 }
14941
14942 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
14943 {
14944         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14945         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
14946         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
14947         struct cfg80211_sar_specs *sar_spec;
14948         enum nl80211_sar_type type;
14949         struct nlattr *spec_list;
14950         u32 specs;
14951         int rem, err;
14952
14953         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
14954                 return -EOPNOTSUPP;
14955
14956         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
14957                 return -EINVAL;
14958
14959         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
14960                          info->attrs[NL80211_ATTR_SAR_SPEC],
14961                          NULL, NULL);
14962
14963         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
14964                 return -EINVAL;
14965
14966         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
14967         if (type != rdev->wiphy.sar_capa->type)
14968                 return -EINVAL;
14969
14970         specs = 0;
14971         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
14972                 specs++;
14973
14974         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
14975                 return -EINVAL;
14976
14977         sar_spec = kzalloc(sizeof(*sar_spec) +
14978                            specs * sizeof(struct cfg80211_sar_sub_specs),
14979                            GFP_KERNEL);
14980         if (!sar_spec)
14981                 return -ENOMEM;
14982
14983         sar_spec->type = type;
14984         specs = 0;
14985         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
14986                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
14987                                  spec_list, NULL, NULL);
14988
14989                 switch (type) {
14990                 case NL80211_SAR_TYPE_POWER:
14991                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
14992                                                       spec, specs)) {
14993                                 err = -EINVAL;
14994                                 goto error;
14995                         }
14996                         break;
14997                 default:
14998                         err = -EINVAL;
14999                         goto error;
15000                 }
15001                 specs++;
15002         }
15003
15004         sar_spec->num_sub_specs = specs;
15005
15006         rdev->cur_cmd_info = info;
15007         err = rdev_set_sar_specs(rdev, sar_spec);
15008         rdev->cur_cmd_info = NULL;
15009 error:
15010         kfree(sar_spec);
15011         return err;
15012 }
15013
15014 static const struct genl_ops nl80211_ops[] = {
15015         {
15016                 .cmd = NL80211_CMD_GET_WIPHY,
15017                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15018                 .doit = nl80211_get_wiphy,
15019                 .dumpit = nl80211_dump_wiphy,
15020                 .done = nl80211_dump_wiphy_done,
15021                 /* can be retrieved by unprivileged users */
15022                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15023         },
15024 };
15025
15026 static const struct genl_small_ops nl80211_small_ops[] = {
15027         {
15028                 .cmd = NL80211_CMD_SET_WIPHY,
15029                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15030                 .doit = nl80211_set_wiphy,
15031                 .flags = GENL_UNS_ADMIN_PERM,
15032         },
15033         {
15034                 .cmd = NL80211_CMD_GET_INTERFACE,
15035                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15036                 .doit = nl80211_get_interface,
15037                 .dumpit = nl80211_dump_interface,
15038                 /* can be retrieved by unprivileged users */
15039                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15040         },
15041         {
15042                 .cmd = NL80211_CMD_SET_INTERFACE,
15043                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15044                 .doit = nl80211_set_interface,
15045                 .flags = GENL_UNS_ADMIN_PERM,
15046                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15047                                   NL80211_FLAG_NEED_RTNL,
15048         },
15049         {
15050                 .cmd = NL80211_CMD_NEW_INTERFACE,
15051                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15052                 .doit = nl80211_new_interface,
15053                 .flags = GENL_UNS_ADMIN_PERM,
15054                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15055                                   NL80211_FLAG_NEED_RTNL |
15056                                   /* we take the wiphy mutex later ourselves */
15057                                   NL80211_FLAG_NO_WIPHY_MTX,
15058         },
15059         {
15060                 .cmd = NL80211_CMD_DEL_INTERFACE,
15061                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15062                 .doit = nl80211_del_interface,
15063                 .flags = GENL_UNS_ADMIN_PERM,
15064                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15065                                   NL80211_FLAG_NEED_RTNL,
15066         },
15067         {
15068                 .cmd = NL80211_CMD_GET_KEY,
15069                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15070                 .doit = nl80211_get_key,
15071                 .flags = GENL_UNS_ADMIN_PERM,
15072                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15073         },
15074         {
15075                 .cmd = NL80211_CMD_SET_KEY,
15076                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15077                 .doit = nl80211_set_key,
15078                 .flags = GENL_UNS_ADMIN_PERM,
15079                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15080                                   NL80211_FLAG_CLEAR_SKB,
15081         },
15082         {
15083                 .cmd = NL80211_CMD_NEW_KEY,
15084                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15085                 .doit = nl80211_new_key,
15086                 .flags = GENL_UNS_ADMIN_PERM,
15087                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15088                                   NL80211_FLAG_CLEAR_SKB,
15089         },
15090         {
15091                 .cmd = NL80211_CMD_DEL_KEY,
15092                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15093                 .doit = nl80211_del_key,
15094                 .flags = GENL_UNS_ADMIN_PERM,
15095                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15096         },
15097         {
15098                 .cmd = NL80211_CMD_SET_BEACON,
15099                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15100                 .flags = GENL_UNS_ADMIN_PERM,
15101                 .doit = nl80211_set_beacon,
15102                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15103         },
15104         {
15105                 .cmd = NL80211_CMD_START_AP,
15106                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15107                 .flags = GENL_UNS_ADMIN_PERM,
15108                 .doit = nl80211_start_ap,
15109                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15110         },
15111         {
15112                 .cmd = NL80211_CMD_STOP_AP,
15113                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15114                 .flags = GENL_UNS_ADMIN_PERM,
15115                 .doit = nl80211_stop_ap,
15116                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15117         },
15118         {
15119                 .cmd = NL80211_CMD_GET_STATION,
15120                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15121                 .doit = nl80211_get_station,
15122                 .dumpit = nl80211_dump_station,
15123                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15124         },
15125         {
15126                 .cmd = NL80211_CMD_SET_STATION,
15127                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15128                 .doit = nl80211_set_station,
15129                 .flags = GENL_UNS_ADMIN_PERM,
15130                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15131         },
15132         {
15133                 .cmd = NL80211_CMD_NEW_STATION,
15134                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15135                 .doit = nl80211_new_station,
15136                 .flags = GENL_UNS_ADMIN_PERM,
15137                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15138         },
15139         {
15140                 .cmd = NL80211_CMD_DEL_STATION,
15141                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15142                 .doit = nl80211_del_station,
15143                 .flags = GENL_UNS_ADMIN_PERM,
15144                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15145         },
15146         {
15147                 .cmd = NL80211_CMD_GET_MPATH,
15148                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15149                 .doit = nl80211_get_mpath,
15150                 .dumpit = nl80211_dump_mpath,
15151                 .flags = GENL_UNS_ADMIN_PERM,
15152                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15153         },
15154         {
15155                 .cmd = NL80211_CMD_GET_MPP,
15156                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15157                 .doit = nl80211_get_mpp,
15158                 .dumpit = nl80211_dump_mpp,
15159                 .flags = GENL_UNS_ADMIN_PERM,
15160                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15161         },
15162         {
15163                 .cmd = NL80211_CMD_SET_MPATH,
15164                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15165                 .doit = nl80211_set_mpath,
15166                 .flags = GENL_UNS_ADMIN_PERM,
15167                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15168         },
15169         {
15170                 .cmd = NL80211_CMD_NEW_MPATH,
15171                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15172                 .doit = nl80211_new_mpath,
15173                 .flags = GENL_UNS_ADMIN_PERM,
15174                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15175         },
15176         {
15177                 .cmd = NL80211_CMD_DEL_MPATH,
15178                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15179                 .doit = nl80211_del_mpath,
15180                 .flags = GENL_UNS_ADMIN_PERM,
15181                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15182         },
15183         {
15184                 .cmd = NL80211_CMD_SET_BSS,
15185                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15186                 .doit = nl80211_set_bss,
15187                 .flags = GENL_UNS_ADMIN_PERM,
15188                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15189         },
15190         {
15191                 .cmd = NL80211_CMD_GET_REG,
15192                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15193                 .doit = nl80211_get_reg_do,
15194                 .dumpit = nl80211_get_reg_dump,
15195                 .internal_flags = 0,
15196                 /* can be retrieved by unprivileged users */
15197         },
15198 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
15199         {
15200                 .cmd = NL80211_CMD_SET_REG,
15201                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15202                 .doit = nl80211_set_reg,
15203                 .flags = GENL_ADMIN_PERM,
15204                 .internal_flags = 0,
15205         },
15206 #endif
15207         {
15208                 .cmd = NL80211_CMD_REQ_SET_REG,
15209                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15210                 .doit = nl80211_req_set_reg,
15211                 .flags = GENL_ADMIN_PERM,
15212         },
15213         {
15214                 .cmd = NL80211_CMD_RELOAD_REGDB,
15215                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15216                 .doit = nl80211_reload_regdb,
15217                 .flags = GENL_ADMIN_PERM,
15218         },
15219         {
15220                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
15221                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15222                 .doit = nl80211_get_mesh_config,
15223                 /* can be retrieved by unprivileged users */
15224                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15225         },
15226         {
15227                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
15228                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15229                 .doit = nl80211_update_mesh_config,
15230                 .flags = GENL_UNS_ADMIN_PERM,
15231                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15232         },
15233         {
15234                 .cmd = NL80211_CMD_TRIGGER_SCAN,
15235                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15236                 .doit = nl80211_trigger_scan,
15237                 .flags = GENL_UNS_ADMIN_PERM,
15238                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15239         },
15240         {
15241                 .cmd = NL80211_CMD_ABORT_SCAN,
15242                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15243                 .doit = nl80211_abort_scan,
15244                 .flags = GENL_UNS_ADMIN_PERM,
15245                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15246         },
15247         {
15248                 .cmd = NL80211_CMD_GET_SCAN,
15249                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15250                 .dumpit = nl80211_dump_scan,
15251         },
15252         {
15253                 .cmd = NL80211_CMD_START_SCHED_SCAN,
15254                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15255                 .doit = nl80211_start_sched_scan,
15256                 .flags = GENL_UNS_ADMIN_PERM,
15257                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15258         },
15259         {
15260                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
15261                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15262                 .doit = nl80211_stop_sched_scan,
15263                 .flags = GENL_UNS_ADMIN_PERM,
15264                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15265         },
15266         {
15267                 .cmd = NL80211_CMD_AUTHENTICATE,
15268                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15269                 .doit = nl80211_authenticate,
15270                 .flags = GENL_UNS_ADMIN_PERM,
15271                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15272                                   0 |
15273                                   NL80211_FLAG_CLEAR_SKB,
15274         },
15275         {
15276                 .cmd = NL80211_CMD_ASSOCIATE,
15277                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15278                 .doit = nl80211_associate,
15279                 .flags = GENL_UNS_ADMIN_PERM,
15280                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15281                                   0 |
15282                                   NL80211_FLAG_CLEAR_SKB,
15283         },
15284         {
15285                 .cmd = NL80211_CMD_DEAUTHENTICATE,
15286                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15287                 .doit = nl80211_deauthenticate,
15288                 .flags = GENL_UNS_ADMIN_PERM,
15289                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15290         },
15291         {
15292                 .cmd = NL80211_CMD_DISASSOCIATE,
15293                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15294                 .doit = nl80211_disassociate,
15295                 .flags = GENL_UNS_ADMIN_PERM,
15296                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15297         },
15298         {
15299                 .cmd = NL80211_CMD_JOIN_IBSS,
15300                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15301                 .doit = nl80211_join_ibss,
15302                 .flags = GENL_UNS_ADMIN_PERM,
15303                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15304         },
15305         {
15306                 .cmd = NL80211_CMD_LEAVE_IBSS,
15307                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15308                 .doit = nl80211_leave_ibss,
15309                 .flags = GENL_UNS_ADMIN_PERM,
15310                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15311         },
15312 #ifdef CONFIG_NL80211_TESTMODE
15313         {
15314                 .cmd = NL80211_CMD_TESTMODE,
15315                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15316                 .doit = nl80211_testmode_do,
15317                 .dumpit = nl80211_testmode_dump,
15318                 .flags = GENL_UNS_ADMIN_PERM,
15319                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15320         },
15321 #endif
15322         {
15323                 .cmd = NL80211_CMD_CONNECT,
15324                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15325                 .doit = nl80211_connect,
15326                 .flags = GENL_UNS_ADMIN_PERM,
15327                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15328                                   0 |
15329                                   NL80211_FLAG_CLEAR_SKB,
15330         },
15331         {
15332                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15333                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15334                 .doit = nl80211_update_connect_params,
15335                 .flags = GENL_ADMIN_PERM,
15336                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15337                                   0 |
15338                                   NL80211_FLAG_CLEAR_SKB,
15339         },
15340         {
15341                 .cmd = NL80211_CMD_DISCONNECT,
15342                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15343                 .doit = nl80211_disconnect,
15344                 .flags = GENL_UNS_ADMIN_PERM,
15345                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15346         },
15347         {
15348                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15349                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15350                 .doit = nl80211_wiphy_netns,
15351                 .flags = GENL_UNS_ADMIN_PERM,
15352                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15353                                   NL80211_FLAG_NEED_RTNL |
15354                                   NL80211_FLAG_NO_WIPHY_MTX,
15355         },
15356         {
15357                 .cmd = NL80211_CMD_GET_SURVEY,
15358                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15359                 .dumpit = nl80211_dump_survey,
15360         },
15361         {
15362                 .cmd = NL80211_CMD_SET_PMKSA,
15363                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15364                 .doit = nl80211_setdel_pmksa,
15365                 .flags = GENL_UNS_ADMIN_PERM,
15366                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15367                                   0 |
15368                                   NL80211_FLAG_CLEAR_SKB,
15369         },
15370         {
15371                 .cmd = NL80211_CMD_DEL_PMKSA,
15372                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15373                 .doit = nl80211_setdel_pmksa,
15374                 .flags = GENL_UNS_ADMIN_PERM,
15375                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15376         },
15377         {
15378                 .cmd = NL80211_CMD_FLUSH_PMKSA,
15379                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15380                 .doit = nl80211_flush_pmksa,
15381                 .flags = GENL_UNS_ADMIN_PERM,
15382                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15383         },
15384         {
15385                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15386                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15387                 .doit = nl80211_remain_on_channel,
15388                 .flags = GENL_UNS_ADMIN_PERM,
15389                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15390         },
15391         {
15392                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15393                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15394                 .doit = nl80211_cancel_remain_on_channel,
15395                 .flags = GENL_UNS_ADMIN_PERM,
15396                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15397         },
15398         {
15399                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15400                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15401                 .doit = nl80211_set_tx_bitrate_mask,
15402                 .flags = GENL_UNS_ADMIN_PERM,
15403                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15404         },
15405         {
15406                 .cmd = NL80211_CMD_REGISTER_FRAME,
15407                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15408                 .doit = nl80211_register_mgmt,
15409                 .flags = GENL_UNS_ADMIN_PERM,
15410                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15411         },
15412         {
15413                 .cmd = NL80211_CMD_FRAME,
15414                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15415                 .doit = nl80211_tx_mgmt,
15416                 .flags = GENL_UNS_ADMIN_PERM,
15417                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15418         },
15419         {
15420                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15421                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15422                 .doit = nl80211_tx_mgmt_cancel_wait,
15423                 .flags = GENL_UNS_ADMIN_PERM,
15424                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15425         },
15426         {
15427                 .cmd = NL80211_CMD_SET_POWER_SAVE,
15428                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15429                 .doit = nl80211_set_power_save,
15430                 .flags = GENL_UNS_ADMIN_PERM,
15431                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15432         },
15433         {
15434                 .cmd = NL80211_CMD_GET_POWER_SAVE,
15435                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15436                 .doit = nl80211_get_power_save,
15437                 /* can be retrieved by unprivileged users */
15438                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15439         },
15440         {
15441                 .cmd = NL80211_CMD_SET_CQM,
15442                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15443                 .doit = nl80211_set_cqm,
15444                 .flags = GENL_UNS_ADMIN_PERM,
15445                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15446         },
15447         {
15448                 .cmd = NL80211_CMD_SET_CHANNEL,
15449                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15450                 .doit = nl80211_set_channel,
15451                 .flags = GENL_UNS_ADMIN_PERM,
15452                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15453         },
15454         {
15455                 .cmd = NL80211_CMD_JOIN_MESH,
15456                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15457                 .doit = nl80211_join_mesh,
15458                 .flags = GENL_UNS_ADMIN_PERM,
15459                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15460         },
15461         {
15462                 .cmd = NL80211_CMD_LEAVE_MESH,
15463                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15464                 .doit = nl80211_leave_mesh,
15465                 .flags = GENL_UNS_ADMIN_PERM,
15466                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15467         },
15468         {
15469                 .cmd = NL80211_CMD_JOIN_OCB,
15470                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15471                 .doit = nl80211_join_ocb,
15472                 .flags = GENL_UNS_ADMIN_PERM,
15473                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15474         },
15475         {
15476                 .cmd = NL80211_CMD_LEAVE_OCB,
15477                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15478                 .doit = nl80211_leave_ocb,
15479                 .flags = GENL_UNS_ADMIN_PERM,
15480                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15481         },
15482 #ifdef CONFIG_PM
15483         {
15484                 .cmd = NL80211_CMD_GET_WOWLAN,
15485                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15486                 .doit = nl80211_get_wowlan,
15487                 /* can be retrieved by unprivileged users */
15488                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15489         },
15490         {
15491                 .cmd = NL80211_CMD_SET_WOWLAN,
15492                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15493                 .doit = nl80211_set_wowlan,
15494                 .flags = GENL_UNS_ADMIN_PERM,
15495                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15496         },
15497 #endif
15498         {
15499                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15500                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15501                 .doit = nl80211_set_rekey_data,
15502                 .flags = GENL_UNS_ADMIN_PERM,
15503                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15504                                   0 |
15505                                   NL80211_FLAG_CLEAR_SKB,
15506         },
15507         {
15508                 .cmd = NL80211_CMD_TDLS_MGMT,
15509                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15510                 .doit = nl80211_tdls_mgmt,
15511                 .flags = GENL_UNS_ADMIN_PERM,
15512                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15513         },
15514         {
15515                 .cmd = NL80211_CMD_TDLS_OPER,
15516                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15517                 .doit = nl80211_tdls_oper,
15518                 .flags = GENL_UNS_ADMIN_PERM,
15519                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15520         },
15521         {
15522                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15523                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15524                 .doit = nl80211_register_unexpected_frame,
15525                 .flags = GENL_UNS_ADMIN_PERM,
15526                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15527         },
15528         {
15529                 .cmd = NL80211_CMD_PROBE_CLIENT,
15530                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15531                 .doit = nl80211_probe_client,
15532                 .flags = GENL_UNS_ADMIN_PERM,
15533                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15534         },
15535         {
15536                 .cmd = NL80211_CMD_REGISTER_BEACONS,
15537                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15538                 .doit = nl80211_register_beacons,
15539                 .flags = GENL_UNS_ADMIN_PERM,
15540                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15541         },
15542         {
15543                 .cmd = NL80211_CMD_SET_NOACK_MAP,
15544                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15545                 .doit = nl80211_set_noack_map,
15546                 .flags = GENL_UNS_ADMIN_PERM,
15547                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15548         },
15549         {
15550                 .cmd = NL80211_CMD_START_P2P_DEVICE,
15551                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15552                 .doit = nl80211_start_p2p_device,
15553                 .flags = GENL_UNS_ADMIN_PERM,
15554                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15555                                   NL80211_FLAG_NEED_RTNL,
15556         },
15557         {
15558                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15559                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15560                 .doit = nl80211_stop_p2p_device,
15561                 .flags = GENL_UNS_ADMIN_PERM,
15562                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15563                                   NL80211_FLAG_NEED_RTNL,
15564         },
15565         {
15566                 .cmd = NL80211_CMD_START_NAN,
15567                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15568                 .doit = nl80211_start_nan,
15569                 .flags = GENL_ADMIN_PERM,
15570                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15571                                   NL80211_FLAG_NEED_RTNL,
15572         },
15573         {
15574                 .cmd = NL80211_CMD_STOP_NAN,
15575                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15576                 .doit = nl80211_stop_nan,
15577                 .flags = GENL_ADMIN_PERM,
15578                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15579                                   NL80211_FLAG_NEED_RTNL,
15580         },
15581         {
15582                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15583                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15584                 .doit = nl80211_nan_add_func,
15585                 .flags = GENL_ADMIN_PERM,
15586                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15587         },
15588         {
15589                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15590                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15591                 .doit = nl80211_nan_del_func,
15592                 .flags = GENL_ADMIN_PERM,
15593                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15594         },
15595         {
15596                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15597                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15598                 .doit = nl80211_nan_change_config,
15599                 .flags = GENL_ADMIN_PERM,
15600                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15601         },
15602         {
15603                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15604                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15605                 .doit = nl80211_set_mcast_rate,
15606                 .flags = GENL_UNS_ADMIN_PERM,
15607                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15608         },
15609         {
15610                 .cmd = NL80211_CMD_SET_MAC_ACL,
15611                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15612                 .doit = nl80211_set_mac_acl,
15613                 .flags = GENL_UNS_ADMIN_PERM,
15614                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15615         },
15616         {
15617                 .cmd = NL80211_CMD_RADAR_DETECT,
15618                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15619                 .doit = nl80211_start_radar_detection,
15620                 .flags = GENL_UNS_ADMIN_PERM,
15621                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15622         },
15623         {
15624                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15625                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15626                 .doit = nl80211_get_protocol_features,
15627         },
15628         {
15629                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15630                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15631                 .doit = nl80211_update_ft_ies,
15632                 .flags = GENL_UNS_ADMIN_PERM,
15633                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15634         },
15635         {
15636                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15637                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15638                 .doit = nl80211_crit_protocol_start,
15639                 .flags = GENL_UNS_ADMIN_PERM,
15640                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15641         },
15642         {
15643                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15644                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15645                 .doit = nl80211_crit_protocol_stop,
15646                 .flags = GENL_UNS_ADMIN_PERM,
15647                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15648         },
15649         {
15650                 .cmd = NL80211_CMD_GET_COALESCE,
15651                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15652                 .doit = nl80211_get_coalesce,
15653                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15654         },
15655         {
15656                 .cmd = NL80211_CMD_SET_COALESCE,
15657                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15658                 .doit = nl80211_set_coalesce,
15659                 .flags = GENL_UNS_ADMIN_PERM,
15660                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15661         },
15662         {
15663                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15664                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15665                 .doit = nl80211_channel_switch,
15666                 .flags = GENL_UNS_ADMIN_PERM,
15667                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15668         },
15669         {
15670                 .cmd = NL80211_CMD_VENDOR,
15671                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15672                 .doit = nl80211_vendor_cmd,
15673                 .dumpit = nl80211_vendor_cmd_dump,
15674                 .flags = GENL_UNS_ADMIN_PERM,
15675                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15676                                   0 |
15677                                   NL80211_FLAG_CLEAR_SKB,
15678         },
15679         {
15680                 .cmd = NL80211_CMD_SET_QOS_MAP,
15681                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15682                 .doit = nl80211_set_qos_map,
15683                 .flags = GENL_UNS_ADMIN_PERM,
15684                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15685         },
15686         {
15687                 .cmd = NL80211_CMD_ADD_TX_TS,
15688                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15689                 .doit = nl80211_add_tx_ts,
15690                 .flags = GENL_UNS_ADMIN_PERM,
15691                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15692         },
15693         {
15694                 .cmd = NL80211_CMD_DEL_TX_TS,
15695                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15696                 .doit = nl80211_del_tx_ts,
15697                 .flags = GENL_UNS_ADMIN_PERM,
15698                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15699         },
15700         {
15701                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15702                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15703                 .doit = nl80211_tdls_channel_switch,
15704                 .flags = GENL_UNS_ADMIN_PERM,
15705                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15706         },
15707         {
15708                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15709                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15710                 .doit = nl80211_tdls_cancel_channel_switch,
15711                 .flags = GENL_UNS_ADMIN_PERM,
15712                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15713         },
15714         {
15715                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15716                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15717                 .doit = nl80211_set_multicast_to_unicast,
15718                 .flags = GENL_UNS_ADMIN_PERM,
15719                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15720         },
15721         {
15722                 .cmd = NL80211_CMD_SET_PMK,
15723                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15724                 .doit = nl80211_set_pmk,
15725                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15726                                   0 |
15727                                   NL80211_FLAG_CLEAR_SKB,
15728         },
15729         {
15730                 .cmd = NL80211_CMD_DEL_PMK,
15731                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15732                 .doit = nl80211_del_pmk,
15733                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15734         },
15735         {
15736                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15737                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15738                 .doit = nl80211_external_auth,
15739                 .flags = GENL_ADMIN_PERM,
15740                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15741         },
15742         {
15743                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15744                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15745                 .doit = nl80211_tx_control_port,
15746                 .flags = GENL_UNS_ADMIN_PERM,
15747                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15748         },
15749         {
15750                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15751                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15752                 .doit = nl80211_get_ftm_responder_stats,
15753                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15754         },
15755         {
15756                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15757                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15758                 .doit = nl80211_pmsr_start,
15759                 .flags = GENL_UNS_ADMIN_PERM,
15760                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15761         },
15762         {
15763                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15764                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15765                 .doit = nl80211_notify_radar_detection,
15766                 .flags = GENL_UNS_ADMIN_PERM,
15767                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15768         },
15769         {
15770                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15771                 .doit = nl80211_update_owe_info,
15772                 .flags = GENL_ADMIN_PERM,
15773                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15774         },
15775         {
15776                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15777                 .doit = nl80211_probe_mesh_link,
15778                 .flags = GENL_UNS_ADMIN_PERM,
15779                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15780         },
15781         {
15782                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15783                 .doit = nl80211_set_tid_config,
15784                 .flags = GENL_UNS_ADMIN_PERM,
15785                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15786         },
15787         {
15788                 .cmd = NL80211_CMD_SET_SAR_SPECS,
15789                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15790                 .doit = nl80211_set_sar_specs,
15791                 .flags = GENL_UNS_ADMIN_PERM,
15792                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15793                                   NL80211_FLAG_NEED_RTNL,
15794         },
15795 };
15796
15797 static struct genl_family nl80211_fam __ro_after_init = {
15798         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15799         .hdrsize = 0,                   /* no private header */
15800         .version = 1,                   /* no particular meaning now */
15801         .maxattr = NL80211_ATTR_MAX,
15802         .policy = nl80211_policy,
15803         .netnsok = true,
15804         .pre_doit = nl80211_pre_doit,
15805         .post_doit = nl80211_post_doit,
15806         .module = THIS_MODULE,
15807         .ops = nl80211_ops,
15808         .n_ops = ARRAY_SIZE(nl80211_ops),
15809         .small_ops = nl80211_small_ops,
15810         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15811         .mcgrps = nl80211_mcgrps,
15812         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15813         .parallel_ops = true,
15814 };
15815
15816 /* notification functions */
15817
15818 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15819                           enum nl80211_commands cmd)
15820 {
15821         struct sk_buff *msg;
15822         struct nl80211_dump_wiphy_state state = {};
15823
15824         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15825                 cmd != NL80211_CMD_DEL_WIPHY);
15826
15827         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15828         if (!msg)
15829                 return;
15830
15831         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15832                 nlmsg_free(msg);
15833                 return;
15834         }
15835
15836         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15837                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15838 }
15839
15840 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15841                                 struct wireless_dev *wdev,
15842                                 enum nl80211_commands cmd)
15843 {
15844         struct sk_buff *msg;
15845
15846         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15847         if (!msg)
15848                 return;
15849
15850         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15851                 nlmsg_free(msg);
15852                 return;
15853         }
15854
15855         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15856                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15857 }
15858
15859 static int nl80211_add_scan_req(struct sk_buff *msg,
15860                                 struct cfg80211_registered_device *rdev)
15861 {
15862         struct cfg80211_scan_request *req = rdev->scan_req;
15863         struct nlattr *nest;
15864         int i;
15865         struct cfg80211_scan_info *info;
15866
15867         if (WARN_ON(!req))
15868                 return 0;
15869
15870         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15871         if (!nest)
15872                 goto nla_put_failure;
15873         for (i = 0; i < req->n_ssids; i++) {
15874                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15875                         goto nla_put_failure;
15876         }
15877         nla_nest_end(msg, nest);
15878
15879         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15880                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15881                 if (!nest)
15882                         goto nla_put_failure;
15883                 for (i = 0; i < req->n_channels; i++) {
15884                         if (nla_put_u32(msg, i,
15885                                    ieee80211_channel_to_khz(req->channels[i])))
15886                                 goto nla_put_failure;
15887                 }
15888                 nla_nest_end(msg, nest);
15889         } else {
15890                 nest = nla_nest_start_noflag(msg,
15891                                              NL80211_ATTR_SCAN_FREQUENCIES);
15892                 if (!nest)
15893                         goto nla_put_failure;
15894                 for (i = 0; i < req->n_channels; i++) {
15895                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15896                                 goto nla_put_failure;
15897                 }
15898                 nla_nest_end(msg, nest);
15899         }
15900
15901         if (req->ie &&
15902             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15903                 goto nla_put_failure;
15904
15905         if (req->flags &&
15906             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15907                 goto nla_put_failure;
15908
15909         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15910                 &rdev->scan_req->info;
15911         if (info->scan_start_tsf &&
15912             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15913                                info->scan_start_tsf, NL80211_BSS_PAD) ||
15914              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15915                      info->tsf_bssid)))
15916                 goto nla_put_failure;
15917
15918         return 0;
15919  nla_put_failure:
15920         return -ENOBUFS;
15921 }
15922
15923 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15924                                  struct cfg80211_registered_device *rdev,
15925                                  struct wireless_dev *wdev,
15926                                  u32 portid, u32 seq, int flags,
15927                                  u32 cmd)
15928 {
15929         void *hdr;
15930
15931         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15932         if (!hdr)
15933                 return -1;
15934
15935         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15936             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15937                                          wdev->netdev->ifindex)) ||
15938             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15939                               NL80211_ATTR_PAD))
15940                 goto nla_put_failure;
15941
15942         /* ignore errors and send incomplete event anyway */
15943         nl80211_add_scan_req(msg, rdev);
15944
15945         genlmsg_end(msg, hdr);
15946         return 0;
15947
15948  nla_put_failure:
15949         genlmsg_cancel(msg, hdr);
15950         return -EMSGSIZE;
15951 }
15952
15953 static int
15954 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15955                             struct cfg80211_sched_scan_request *req, u32 cmd)
15956 {
15957         void *hdr;
15958
15959         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15960         if (!hdr)
15961                 return -1;
15962
15963         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15964                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15965             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15966             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15967                               NL80211_ATTR_PAD))
15968                 goto nla_put_failure;
15969
15970         genlmsg_end(msg, hdr);
15971         return 0;
15972
15973  nla_put_failure:
15974         genlmsg_cancel(msg, hdr);
15975         return -EMSGSIZE;
15976 }
15977
15978 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15979                              struct wireless_dev *wdev)
15980 {
15981         struct sk_buff *msg;
15982
15983         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15984         if (!msg)
15985                 return;
15986
15987         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15988                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15989                 nlmsg_free(msg);
15990                 return;
15991         }
15992
15993         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15994                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15995 }
15996
15997 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15998                                        struct wireless_dev *wdev, bool aborted)
15999 {
16000         struct sk_buff *msg;
16001
16002         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16003         if (!msg)
16004                 return NULL;
16005
16006         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
16007                                   aborted ? NL80211_CMD_SCAN_ABORTED :
16008                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
16009                 nlmsg_free(msg);
16010                 return NULL;
16011         }
16012
16013         return msg;
16014 }
16015
16016 /* send message created by nl80211_build_scan_msg() */
16017 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
16018                            struct sk_buff *msg)
16019 {
16020         if (!msg)
16021                 return;
16022
16023         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16024                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16025 }
16026
16027 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
16028 {
16029         struct sk_buff *msg;
16030
16031         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16032         if (!msg)
16033                 return;
16034
16035         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
16036                 nlmsg_free(msg);
16037                 return;
16038         }
16039
16040         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
16041                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16042 }
16043
16044 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
16045                                           struct regulatory_request *request)
16046 {
16047         /* Userspace can always count this one always being set */
16048         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
16049                 goto nla_put_failure;
16050
16051         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
16052                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16053                                NL80211_REGDOM_TYPE_WORLD))
16054                         goto nla_put_failure;
16055         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
16056                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16057                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
16058                         goto nla_put_failure;
16059         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
16060                    request->intersect) {
16061                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16062                                NL80211_REGDOM_TYPE_INTERSECTION))
16063                         goto nla_put_failure;
16064         } else {
16065                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16066                                NL80211_REGDOM_TYPE_COUNTRY) ||
16067                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
16068                                    request->alpha2))
16069                         goto nla_put_failure;
16070         }
16071
16072         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
16073                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
16074
16075                 if (wiphy &&
16076                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
16077                         goto nla_put_failure;
16078
16079                 if (wiphy &&
16080                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
16081                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
16082                         goto nla_put_failure;
16083         }
16084
16085         return true;
16086
16087 nla_put_failure:
16088         return false;
16089 }
16090
16091 /*
16092  * This can happen on global regulatory changes or device specific settings
16093  * based on custom regulatory domains.
16094  */
16095 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
16096                                      struct regulatory_request *request)
16097 {
16098         struct sk_buff *msg;
16099         void *hdr;
16100
16101         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16102         if (!msg)
16103                 return;
16104
16105         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
16106         if (!hdr)
16107                 goto nla_put_failure;
16108
16109         if (!nl80211_reg_change_event_fill(msg, request))
16110                 goto nla_put_failure;
16111
16112         genlmsg_end(msg, hdr);
16113
16114         rcu_read_lock();
16115         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16116                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16117         rcu_read_unlock();
16118
16119         return;
16120
16121 nla_put_failure:
16122         nlmsg_free(msg);
16123 }
16124
16125 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
16126                                     struct net_device *netdev,
16127                                     const u8 *buf, size_t len,
16128                                     enum nl80211_commands cmd, gfp_t gfp,
16129                                     int uapsd_queues, const u8 *req_ies,
16130                                     size_t req_ies_len, bool reconnect)
16131 {
16132         struct sk_buff *msg;
16133         void *hdr;
16134
16135         msg = nlmsg_new(100 + len + req_ies_len, gfp);
16136         if (!msg)
16137                 return;
16138
16139         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16140         if (!hdr) {
16141                 nlmsg_free(msg);
16142                 return;
16143         }
16144
16145         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16146             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16147             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16148             (req_ies &&
16149              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
16150                 goto nla_put_failure;
16151
16152         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
16153                 goto nla_put_failure;
16154
16155         if (uapsd_queues >= 0) {
16156                 struct nlattr *nla_wmm =
16157                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
16158                 if (!nla_wmm)
16159                         goto nla_put_failure;
16160
16161                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
16162                                uapsd_queues))
16163                         goto nla_put_failure;
16164
16165                 nla_nest_end(msg, nla_wmm);
16166         }
16167
16168         genlmsg_end(msg, hdr);
16169
16170         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16171                                 NL80211_MCGRP_MLME, gfp);
16172         return;
16173
16174  nla_put_failure:
16175         nlmsg_free(msg);
16176 }
16177
16178 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
16179                           struct net_device *netdev, const u8 *buf,
16180                           size_t len, gfp_t gfp)
16181 {
16182         nl80211_send_mlme_event(rdev, netdev, buf, len,
16183                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
16184                                 false);
16185 }
16186
16187 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
16188                            struct net_device *netdev, const u8 *buf,
16189                            size_t len, gfp_t gfp, int uapsd_queues,
16190                            const u8 *req_ies, size_t req_ies_len)
16191 {
16192         nl80211_send_mlme_event(rdev, netdev, buf, len,
16193                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
16194                                 req_ies, req_ies_len, false);
16195 }
16196
16197 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
16198                          struct net_device *netdev, const u8 *buf,
16199                          size_t len, bool reconnect, gfp_t gfp)
16200 {
16201         nl80211_send_mlme_event(rdev, netdev, buf, len,
16202                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
16203                                 reconnect);
16204 }
16205
16206 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
16207                            struct net_device *netdev, const u8 *buf,
16208                            size_t len, bool reconnect, gfp_t gfp)
16209 {
16210         nl80211_send_mlme_event(rdev, netdev, buf, len,
16211                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
16212                                 reconnect);
16213 }
16214
16215 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
16216                                   size_t len)
16217 {
16218         struct wireless_dev *wdev = dev->ieee80211_ptr;
16219         struct wiphy *wiphy = wdev->wiphy;
16220         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16221         const struct ieee80211_mgmt *mgmt = (void *)buf;
16222         u32 cmd;
16223
16224         if (WARN_ON(len < 2))
16225                 return;
16226
16227         if (ieee80211_is_deauth(mgmt->frame_control)) {
16228                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
16229         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
16230                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
16231         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
16232                 if (wdev->unprot_beacon_reported &&
16233                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
16234                         return;
16235                 cmd = NL80211_CMD_UNPROT_BEACON;
16236                 wdev->unprot_beacon_reported = jiffies;
16237         } else {
16238                 return;
16239         }
16240
16241         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
16242         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
16243                                 NULL, 0, false);
16244 }
16245 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
16246
16247 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
16248                                       struct net_device *netdev, int cmd,
16249                                       const u8 *addr, gfp_t gfp)
16250 {
16251         struct sk_buff *msg;
16252         void *hdr;
16253
16254         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16255         if (!msg)
16256                 return;
16257
16258         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16259         if (!hdr) {
16260                 nlmsg_free(msg);
16261                 return;
16262         }
16263
16264         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16265             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16266             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16267             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16268                 goto nla_put_failure;
16269
16270         genlmsg_end(msg, hdr);
16271
16272         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16273                                 NL80211_MCGRP_MLME, gfp);
16274         return;
16275
16276  nla_put_failure:
16277         nlmsg_free(msg);
16278 }
16279
16280 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16281                                struct net_device *netdev, const u8 *addr,
16282                                gfp_t gfp)
16283 {
16284         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16285                                   addr, gfp);
16286 }
16287
16288 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16289                                 struct net_device *netdev, const u8 *addr,
16290                                 gfp_t gfp)
16291 {
16292         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16293                                   addr, gfp);
16294 }
16295
16296 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16297                                  struct net_device *netdev,
16298                                  struct cfg80211_connect_resp_params *cr,
16299                                  gfp_t gfp)
16300 {
16301         struct sk_buff *msg;
16302         void *hdr;
16303
16304         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16305                         cr->fils.kek_len + cr->fils.pmk_len +
16306                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16307         if (!msg)
16308                 return;
16309
16310         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16311         if (!hdr) {
16312                 nlmsg_free(msg);
16313                 return;
16314         }
16315
16316         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16317             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16318             (cr->bssid &&
16319              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16320             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16321                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16322                         cr->status) ||
16323             (cr->status < 0 &&
16324              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16325               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16326                           cr->timeout_reason))) ||
16327             (cr->req_ie &&
16328              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16329             (cr->resp_ie &&
16330              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16331                      cr->resp_ie)) ||
16332             (cr->fils.update_erp_next_seq_num &&
16333              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16334                          cr->fils.erp_next_seq_num)) ||
16335             (cr->status == WLAN_STATUS_SUCCESS &&
16336              ((cr->fils.kek &&
16337                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16338                        cr->fils.kek)) ||
16339               (cr->fils.pmk &&
16340                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16341               (cr->fils.pmkid &&
16342                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16343                 goto nla_put_failure;
16344
16345         genlmsg_end(msg, hdr);
16346
16347         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16348                                 NL80211_MCGRP_MLME, gfp);
16349         return;
16350
16351  nla_put_failure:
16352         nlmsg_free(msg);
16353 }
16354
16355 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16356                          struct net_device *netdev,
16357                          struct cfg80211_roam_info *info, gfp_t gfp)
16358 {
16359         struct sk_buff *msg;
16360         void *hdr;
16361         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16362
16363         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16364                         info->fils.kek_len + info->fils.pmk_len +
16365                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16366         if (!msg)
16367                 return;
16368
16369         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16370         if (!hdr) {
16371                 nlmsg_free(msg);
16372                 return;
16373         }
16374
16375         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16376             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16377             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16378             (info->req_ie &&
16379              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16380                      info->req_ie)) ||
16381             (info->resp_ie &&
16382              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16383                      info->resp_ie)) ||
16384             (info->fils.update_erp_next_seq_num &&
16385              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16386                          info->fils.erp_next_seq_num)) ||
16387             (info->fils.kek &&
16388              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16389                      info->fils.kek)) ||
16390             (info->fils.pmk &&
16391              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16392             (info->fils.pmkid &&
16393              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16394                 goto nla_put_failure;
16395
16396         genlmsg_end(msg, hdr);
16397
16398         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16399                                 NL80211_MCGRP_MLME, gfp);
16400         return;
16401
16402  nla_put_failure:
16403         nlmsg_free(msg);
16404 }
16405
16406 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16407                                   struct net_device *netdev, const u8 *bssid)
16408 {
16409         struct sk_buff *msg;
16410         void *hdr;
16411
16412         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16413         if (!msg)
16414                 return;
16415
16416         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16417         if (!hdr) {
16418                 nlmsg_free(msg);
16419                 return;
16420         }
16421
16422         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16423             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16424             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16425                 goto nla_put_failure;
16426
16427         genlmsg_end(msg, hdr);
16428
16429         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16430                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16431         return;
16432
16433  nla_put_failure:
16434         nlmsg_free(msg);
16435 }
16436
16437 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16438                                struct net_device *netdev, u16 reason,
16439                                const u8 *ie, size_t ie_len, bool from_ap)
16440 {
16441         struct sk_buff *msg;
16442         void *hdr;
16443
16444         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16445         if (!msg)
16446                 return;
16447
16448         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16449         if (!hdr) {
16450                 nlmsg_free(msg);
16451                 return;
16452         }
16453
16454         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16455             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16456             (reason &&
16457              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16458             (from_ap &&
16459              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16460             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16461                 goto nla_put_failure;
16462
16463         genlmsg_end(msg, hdr);
16464
16465         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16466                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16467         return;
16468
16469  nla_put_failure:
16470         nlmsg_free(msg);
16471 }
16472
16473 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16474                              struct net_device *netdev, const u8 *bssid,
16475                              gfp_t gfp)
16476 {
16477         struct sk_buff *msg;
16478         void *hdr;
16479
16480         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16481         if (!msg)
16482                 return;
16483
16484         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16485         if (!hdr) {
16486                 nlmsg_free(msg);
16487                 return;
16488         }
16489
16490         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16491             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16492             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16493                 goto nla_put_failure;
16494
16495         genlmsg_end(msg, hdr);
16496
16497         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16498                                 NL80211_MCGRP_MLME, gfp);
16499         return;
16500
16501  nla_put_failure:
16502         nlmsg_free(msg);
16503 }
16504
16505 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16506                                         const u8 *ie, u8 ie_len,
16507                                         int sig_dbm, gfp_t gfp)
16508 {
16509         struct wireless_dev *wdev = dev->ieee80211_ptr;
16510         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16511         struct sk_buff *msg;
16512         void *hdr;
16513
16514         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16515                 return;
16516
16517         trace_cfg80211_notify_new_peer_candidate(dev, addr);
16518
16519         msg = nlmsg_new(100 + ie_len, gfp);
16520         if (!msg)
16521                 return;
16522
16523         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16524         if (!hdr) {
16525                 nlmsg_free(msg);
16526                 return;
16527         }
16528
16529         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16530             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16531             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16532             (ie_len && ie &&
16533              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16534             (sig_dbm &&
16535              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16536                 goto nla_put_failure;
16537
16538         genlmsg_end(msg, hdr);
16539
16540         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16541                                 NL80211_MCGRP_MLME, gfp);
16542         return;
16543
16544  nla_put_failure:
16545         nlmsg_free(msg);
16546 }
16547 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16548
16549 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16550                                  struct net_device *netdev, const u8 *addr,
16551                                  enum nl80211_key_type key_type, int key_id,
16552                                  const u8 *tsc, gfp_t gfp)
16553 {
16554         struct sk_buff *msg;
16555         void *hdr;
16556
16557         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16558         if (!msg)
16559                 return;
16560
16561         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16562         if (!hdr) {
16563                 nlmsg_free(msg);
16564                 return;
16565         }
16566
16567         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16568             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16569             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16570             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16571             (key_id != -1 &&
16572              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16573             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16574                 goto nla_put_failure;
16575
16576         genlmsg_end(msg, hdr);
16577
16578         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16579                                 NL80211_MCGRP_MLME, gfp);
16580         return;
16581
16582  nla_put_failure:
16583         nlmsg_free(msg);
16584 }
16585
16586 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16587                                     struct ieee80211_channel *channel_before,
16588                                     struct ieee80211_channel *channel_after)
16589 {
16590         struct sk_buff *msg;
16591         void *hdr;
16592         struct nlattr *nl_freq;
16593
16594         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16595         if (!msg)
16596                 return;
16597
16598         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16599         if (!hdr) {
16600                 nlmsg_free(msg);
16601                 return;
16602         }
16603
16604         /*
16605          * Since we are applying the beacon hint to a wiphy we know its
16606          * wiphy_idx is valid
16607          */
16608         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16609                 goto nla_put_failure;
16610
16611         /* Before */
16612         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16613         if (!nl_freq)
16614                 goto nla_put_failure;
16615
16616         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16617                 goto nla_put_failure;
16618         nla_nest_end(msg, nl_freq);
16619
16620         /* After */
16621         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16622         if (!nl_freq)
16623                 goto nla_put_failure;
16624
16625         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16626                 goto nla_put_failure;
16627         nla_nest_end(msg, nl_freq);
16628
16629         genlmsg_end(msg, hdr);
16630
16631         rcu_read_lock();
16632         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16633                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16634         rcu_read_unlock();
16635
16636         return;
16637
16638 nla_put_failure:
16639         nlmsg_free(msg);
16640 }
16641
16642 static void nl80211_send_remain_on_chan_event(
16643         int cmd, struct cfg80211_registered_device *rdev,
16644         struct wireless_dev *wdev, u64 cookie,
16645         struct ieee80211_channel *chan,
16646         unsigned int duration, gfp_t gfp)
16647 {
16648         struct sk_buff *msg;
16649         void *hdr;
16650
16651         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16652         if (!msg)
16653                 return;
16654
16655         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16656         if (!hdr) {
16657                 nlmsg_free(msg);
16658                 return;
16659         }
16660
16661         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16662             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16663                                          wdev->netdev->ifindex)) ||
16664             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16665                               NL80211_ATTR_PAD) ||
16666             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16667             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16668                         NL80211_CHAN_NO_HT) ||
16669             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16670                               NL80211_ATTR_PAD))
16671                 goto nla_put_failure;
16672
16673         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16674             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16675                 goto nla_put_failure;
16676
16677         genlmsg_end(msg, hdr);
16678
16679         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16680                                 NL80211_MCGRP_MLME, gfp);
16681         return;
16682
16683  nla_put_failure:
16684         nlmsg_free(msg);
16685 }
16686
16687 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16688                                struct ieee80211_channel *chan,
16689                                unsigned int duration, gfp_t gfp)
16690 {
16691         struct wiphy *wiphy = wdev->wiphy;
16692         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16693
16694         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16695         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16696                                           rdev, wdev, cookie, chan,
16697                                           duration, gfp);
16698 }
16699 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16700
16701 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16702                                         struct ieee80211_channel *chan,
16703                                         gfp_t gfp)
16704 {
16705         struct wiphy *wiphy = wdev->wiphy;
16706         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16707
16708         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16709         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16710                                           rdev, wdev, cookie, chan, 0, gfp);
16711 }
16712 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16713
16714 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16715                                         struct ieee80211_channel *chan,
16716                                         gfp_t gfp)
16717 {
16718         struct wiphy *wiphy = wdev->wiphy;
16719         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16720
16721         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16722         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16723                                           rdev, wdev, cookie, chan, 0, gfp);
16724 }
16725 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16726
16727 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16728                       struct station_info *sinfo, gfp_t gfp)
16729 {
16730         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16731         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16732         struct sk_buff *msg;
16733
16734         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16735
16736         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16737         if (!msg)
16738                 return;
16739
16740         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16741                                  rdev, dev, mac_addr, sinfo) < 0) {
16742                 nlmsg_free(msg);
16743                 return;
16744         }
16745
16746         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16747                                 NL80211_MCGRP_MLME, gfp);
16748 }
16749 EXPORT_SYMBOL(cfg80211_new_sta);
16750
16751 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16752                             struct station_info *sinfo, gfp_t gfp)
16753 {
16754         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16755         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16756         struct sk_buff *msg;
16757         struct station_info empty_sinfo = {};
16758
16759         if (!sinfo)
16760                 sinfo = &empty_sinfo;
16761
16762         trace_cfg80211_del_sta(dev, mac_addr);
16763
16764         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16765         if (!msg) {
16766                 cfg80211_sinfo_release_content(sinfo);
16767                 return;
16768         }
16769
16770         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16771                                  rdev, dev, mac_addr, sinfo) < 0) {
16772                 nlmsg_free(msg);
16773                 return;
16774         }
16775
16776         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16777                                 NL80211_MCGRP_MLME, gfp);
16778 }
16779 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16780
16781 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16782                           enum nl80211_connect_failed_reason reason,
16783                           gfp_t gfp)
16784 {
16785         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16786         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16787         struct sk_buff *msg;
16788         void *hdr;
16789
16790         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16791         if (!msg)
16792                 return;
16793
16794         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16795         if (!hdr) {
16796                 nlmsg_free(msg);
16797                 return;
16798         }
16799
16800         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16801             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16802             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16803                 goto nla_put_failure;
16804
16805         genlmsg_end(msg, hdr);
16806
16807         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16808                                 NL80211_MCGRP_MLME, gfp);
16809         return;
16810
16811  nla_put_failure:
16812         nlmsg_free(msg);
16813 }
16814 EXPORT_SYMBOL(cfg80211_conn_failed);
16815
16816 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16817                                        const u8 *addr, gfp_t gfp)
16818 {
16819         struct wireless_dev *wdev = dev->ieee80211_ptr;
16820         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16821         struct sk_buff *msg;
16822         void *hdr;
16823         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16824
16825         if (!nlportid)
16826                 return false;
16827
16828         msg = nlmsg_new(100, gfp);
16829         if (!msg)
16830                 return true;
16831
16832         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16833         if (!hdr) {
16834                 nlmsg_free(msg);
16835                 return true;
16836         }
16837
16838         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16839             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16840             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16841                 goto nla_put_failure;
16842
16843         genlmsg_end(msg, hdr);
16844         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16845         return true;
16846
16847  nla_put_failure:
16848         nlmsg_free(msg);
16849         return true;
16850 }
16851
16852 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16853                                 const u8 *addr, gfp_t gfp)
16854 {
16855         struct wireless_dev *wdev = dev->ieee80211_ptr;
16856         bool ret;
16857
16858         trace_cfg80211_rx_spurious_frame(dev, addr);
16859
16860         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16861                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16862                 trace_cfg80211_return_bool(false);
16863                 return false;
16864         }
16865         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16866                                          addr, gfp);
16867         trace_cfg80211_return_bool(ret);
16868         return ret;
16869 }
16870 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16871
16872 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16873                                         const u8 *addr, gfp_t gfp)
16874 {
16875         struct wireless_dev *wdev = dev->ieee80211_ptr;
16876         bool ret;
16877
16878         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16879
16880         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16881                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16882                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16883                 trace_cfg80211_return_bool(false);
16884                 return false;
16885         }
16886         ret = __nl80211_unexpected_frame(dev,
16887                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16888                                          addr, gfp);
16889         trace_cfg80211_return_bool(ret);
16890         return ret;
16891 }
16892 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16893
16894 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16895                       struct wireless_dev *wdev, u32 nlportid,
16896                       int freq, int sig_dbm,
16897                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16898 {
16899         struct net_device *netdev = wdev->netdev;
16900         struct sk_buff *msg;
16901         void *hdr;
16902
16903         msg = nlmsg_new(100 + len, gfp);
16904         if (!msg)
16905                 return -ENOMEM;
16906
16907         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16908         if (!hdr) {
16909                 nlmsg_free(msg);
16910                 return -ENOMEM;
16911         }
16912
16913         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16914             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16915                                         netdev->ifindex)) ||
16916             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16917                               NL80211_ATTR_PAD) ||
16918             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16919             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16920             (sig_dbm &&
16921              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16922             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16923             (flags &&
16924              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16925                 goto nla_put_failure;
16926
16927         genlmsg_end(msg, hdr);
16928
16929         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16930
16931  nla_put_failure:
16932         nlmsg_free(msg);
16933         return -ENOBUFS;
16934 }
16935
16936 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16937                                     const u8 *buf, size_t len, bool ack,
16938                                     gfp_t gfp, enum nl80211_commands command)
16939 {
16940         struct wiphy *wiphy = wdev->wiphy;
16941         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16942         struct net_device *netdev = wdev->netdev;
16943         struct sk_buff *msg;
16944         void *hdr;
16945
16946         if (command == NL80211_CMD_FRAME_TX_STATUS)
16947                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16948         else
16949                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16950
16951         msg = nlmsg_new(100 + len, gfp);
16952         if (!msg)
16953                 return;
16954
16955         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16956         if (!hdr) {
16957                 nlmsg_free(msg);
16958                 return;
16959         }
16960
16961         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16962             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16963                                    netdev->ifindex)) ||
16964             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16965                               NL80211_ATTR_PAD) ||
16966             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16967             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16968                               NL80211_ATTR_PAD) ||
16969             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16970                 goto nla_put_failure;
16971
16972         genlmsg_end(msg, hdr);
16973
16974         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16975                                 NL80211_MCGRP_MLME, gfp);
16976         return;
16977
16978 nla_put_failure:
16979         nlmsg_free(msg);
16980 }
16981
16982 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16983                                      const u8 *buf, size_t len, bool ack,
16984                                      gfp_t gfp)
16985 {
16986         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16987                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16988 }
16989 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16990
16991 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16992                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16993 {
16994         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16995                                 NL80211_CMD_FRAME_TX_STATUS);
16996 }
16997 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16998
16999 static int __nl80211_rx_control_port(struct net_device *dev,
17000                                      struct sk_buff *skb,
17001                                      bool unencrypted, gfp_t gfp)
17002 {
17003         struct wireless_dev *wdev = dev->ieee80211_ptr;
17004         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17005         struct ethhdr *ehdr = eth_hdr(skb);
17006         const u8 *addr = ehdr->h_source;
17007         u16 proto = be16_to_cpu(skb->protocol);
17008         struct sk_buff *msg;
17009         void *hdr;
17010         struct nlattr *frame;
17011
17012         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
17013
17014         if (!nlportid)
17015                 return -ENOENT;
17016
17017         msg = nlmsg_new(100 + skb->len, gfp);
17018         if (!msg)
17019                 return -ENOMEM;
17020
17021         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
17022         if (!hdr) {
17023                 nlmsg_free(msg);
17024                 return -ENOBUFS;
17025         }
17026
17027         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17028             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17029             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17030                               NL80211_ATTR_PAD) ||
17031             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17032             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
17033             (unencrypted && nla_put_flag(msg,
17034                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
17035                 goto nla_put_failure;
17036
17037         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
17038         if (!frame)
17039                 goto nla_put_failure;
17040
17041         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
17042         genlmsg_end(msg, hdr);
17043
17044         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17045
17046  nla_put_failure:
17047         nlmsg_free(msg);
17048         return -ENOBUFS;
17049 }
17050
17051 bool cfg80211_rx_control_port(struct net_device *dev,
17052                               struct sk_buff *skb, bool unencrypted)
17053 {
17054         int ret;
17055
17056         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
17057         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
17058         trace_cfg80211_return_bool(ret == 0);
17059         return ret == 0;
17060 }
17061 EXPORT_SYMBOL(cfg80211_rx_control_port);
17062
17063 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
17064                                             const char *mac, gfp_t gfp)
17065 {
17066         struct wireless_dev *wdev = dev->ieee80211_ptr;
17067         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17068         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17069         void **cb;
17070
17071         if (!msg)
17072                 return NULL;
17073
17074         cb = (void **)msg->cb;
17075
17076         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
17077         if (!cb[0]) {
17078                 nlmsg_free(msg);
17079                 return NULL;
17080         }
17081
17082         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17083             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17084                 goto nla_put_failure;
17085
17086         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17087                 goto nla_put_failure;
17088
17089         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
17090         if (!cb[1])
17091                 goto nla_put_failure;
17092
17093         cb[2] = rdev;
17094
17095         return msg;
17096  nla_put_failure:
17097         nlmsg_free(msg);
17098         return NULL;
17099 }
17100
17101 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
17102 {
17103         void **cb = (void **)msg->cb;
17104         struct cfg80211_registered_device *rdev = cb[2];
17105
17106         nla_nest_end(msg, cb[1]);
17107         genlmsg_end(msg, cb[0]);
17108
17109         memset(msg->cb, 0, sizeof(msg->cb));
17110
17111         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17112                                 NL80211_MCGRP_MLME, gfp);
17113 }
17114
17115 void cfg80211_cqm_rssi_notify(struct net_device *dev,
17116                               enum nl80211_cqm_rssi_threshold_event rssi_event,
17117                               s32 rssi_level, gfp_t gfp)
17118 {
17119         struct sk_buff *msg;
17120         struct wireless_dev *wdev = dev->ieee80211_ptr;
17121         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17122
17123         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
17124
17125         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
17126                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
17127                 return;
17128
17129         if (wdev->cqm_config) {
17130                 wdev->cqm_config->last_rssi_event_value = rssi_level;
17131
17132                 cfg80211_cqm_rssi_update(rdev, dev);
17133
17134                 if (rssi_level == 0)
17135                         rssi_level = wdev->cqm_config->last_rssi_event_value;
17136         }
17137
17138         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17139         if (!msg)
17140                 return;
17141
17142         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
17143                         rssi_event))
17144                 goto nla_put_failure;
17145
17146         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
17147                                       rssi_level))
17148                 goto nla_put_failure;
17149
17150         cfg80211_send_cqm(msg, gfp);
17151
17152         return;
17153
17154  nla_put_failure:
17155         nlmsg_free(msg);
17156 }
17157 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
17158
17159 void cfg80211_cqm_txe_notify(struct net_device *dev,
17160                              const u8 *peer, u32 num_packets,
17161                              u32 rate, u32 intvl, gfp_t gfp)
17162 {
17163         struct sk_buff *msg;
17164
17165         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17166         if (!msg)
17167                 return;
17168
17169         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
17170                 goto nla_put_failure;
17171
17172         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
17173                 goto nla_put_failure;
17174
17175         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
17176                 goto nla_put_failure;
17177
17178         cfg80211_send_cqm(msg, gfp);
17179         return;
17180
17181  nla_put_failure:
17182         nlmsg_free(msg);
17183 }
17184 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
17185
17186 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
17187                                  const u8 *peer, u32 num_packets, gfp_t gfp)
17188 {
17189         struct sk_buff *msg;
17190
17191         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
17192
17193         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17194         if (!msg)
17195                 return;
17196
17197         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
17198                 goto nla_put_failure;
17199
17200         cfg80211_send_cqm(msg, gfp);
17201         return;
17202
17203  nla_put_failure:
17204         nlmsg_free(msg);
17205 }
17206 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
17207
17208 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
17209 {
17210         struct sk_buff *msg;
17211
17212         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17213         if (!msg)
17214                 return;
17215
17216         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
17217                 goto nla_put_failure;
17218
17219         cfg80211_send_cqm(msg, gfp);
17220         return;
17221
17222  nla_put_failure:
17223         nlmsg_free(msg);
17224 }
17225 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
17226
17227 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
17228                                      struct net_device *netdev, const u8 *bssid,
17229                                      const u8 *replay_ctr, gfp_t gfp)
17230 {
17231         struct sk_buff *msg;
17232         struct nlattr *rekey_attr;
17233         void *hdr;
17234
17235         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17236         if (!msg)
17237                 return;
17238
17239         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
17240         if (!hdr) {
17241                 nlmsg_free(msg);
17242                 return;
17243         }
17244
17245         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17246             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17247             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17248                 goto nla_put_failure;
17249
17250         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
17251         if (!rekey_attr)
17252                 goto nla_put_failure;
17253
17254         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
17255                     NL80211_REPLAY_CTR_LEN, replay_ctr))
17256                 goto nla_put_failure;
17257
17258         nla_nest_end(msg, rekey_attr);
17259
17260         genlmsg_end(msg, hdr);
17261
17262         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17263                                 NL80211_MCGRP_MLME, gfp);
17264         return;
17265
17266  nla_put_failure:
17267         nlmsg_free(msg);
17268 }
17269
17270 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
17271                                const u8 *replay_ctr, gfp_t gfp)
17272 {
17273         struct wireless_dev *wdev = dev->ieee80211_ptr;
17274         struct wiphy *wiphy = wdev->wiphy;
17275         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17276
17277         trace_cfg80211_gtk_rekey_notify(dev, bssid);
17278         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17279 }
17280 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17281
17282 static void
17283 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17284                                struct net_device *netdev, int index,
17285                                const u8 *bssid, bool preauth, gfp_t gfp)
17286 {
17287         struct sk_buff *msg;
17288         struct nlattr *attr;
17289         void *hdr;
17290
17291         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17292         if (!msg)
17293                 return;
17294
17295         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17296         if (!hdr) {
17297                 nlmsg_free(msg);
17298                 return;
17299         }
17300
17301         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17302             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17303                 goto nla_put_failure;
17304
17305         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17306         if (!attr)
17307                 goto nla_put_failure;
17308
17309         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17310             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17311             (preauth &&
17312              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17313                 goto nla_put_failure;
17314
17315         nla_nest_end(msg, attr);
17316
17317         genlmsg_end(msg, hdr);
17318
17319         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17320                                 NL80211_MCGRP_MLME, gfp);
17321         return;
17322
17323  nla_put_failure:
17324         nlmsg_free(msg);
17325 }
17326
17327 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17328                                      const u8 *bssid, bool preauth, gfp_t gfp)
17329 {
17330         struct wireless_dev *wdev = dev->ieee80211_ptr;
17331         struct wiphy *wiphy = wdev->wiphy;
17332         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17333
17334         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17335         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17336 }
17337 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17338
17339 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17340                                      struct net_device *netdev,
17341                                      struct cfg80211_chan_def *chandef,
17342                                      gfp_t gfp,
17343                                      enum nl80211_commands notif,
17344                                      u8 count, bool quiet)
17345 {
17346         struct sk_buff *msg;
17347         void *hdr;
17348
17349         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17350         if (!msg)
17351                 return;
17352
17353         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17354         if (!hdr) {
17355                 nlmsg_free(msg);
17356                 return;
17357         }
17358
17359         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17360                 goto nla_put_failure;
17361
17362         if (nl80211_send_chandef(msg, chandef))
17363                 goto nla_put_failure;
17364
17365         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
17366                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
17367                         goto nla_put_failure;
17368                 if (quiet &&
17369                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
17370                         goto nla_put_failure;
17371         }
17372
17373         genlmsg_end(msg, hdr);
17374
17375         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17376                                 NL80211_MCGRP_MLME, gfp);
17377         return;
17378
17379  nla_put_failure:
17380         nlmsg_free(msg);
17381 }
17382
17383 void cfg80211_ch_switch_notify(struct net_device *dev,
17384                                struct cfg80211_chan_def *chandef)
17385 {
17386         struct wireless_dev *wdev = dev->ieee80211_ptr;
17387         struct wiphy *wiphy = wdev->wiphy;
17388         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17389
17390         ASSERT_WDEV_LOCK(wdev);
17391
17392         trace_cfg80211_ch_switch_notify(dev, chandef);
17393
17394         wdev->chandef = *chandef;
17395         wdev->preset_chandef = *chandef;
17396
17397         if (wdev->iftype == NL80211_IFTYPE_STATION &&
17398             !WARN_ON(!wdev->current_bss))
17399                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17400
17401         cfg80211_sched_dfs_chan_update(rdev);
17402
17403         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17404                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
17405 }
17406 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17407
17408 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17409                                        struct cfg80211_chan_def *chandef,
17410                                        u8 count, bool quiet)
17411 {
17412         struct wireless_dev *wdev = dev->ieee80211_ptr;
17413         struct wiphy *wiphy = wdev->wiphy;
17414         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17415
17416         trace_cfg80211_ch_switch_started_notify(dev, chandef);
17417
17418         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17419                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
17420                                  count, quiet);
17421 }
17422 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17423
17424 void
17425 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17426                      const struct cfg80211_chan_def *chandef,
17427                      enum nl80211_radar_event event,
17428                      struct net_device *netdev, gfp_t gfp)
17429 {
17430         struct sk_buff *msg;
17431         void *hdr;
17432
17433         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17434         if (!msg)
17435                 return;
17436
17437         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17438         if (!hdr) {
17439                 nlmsg_free(msg);
17440                 return;
17441         }
17442
17443         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17444                 goto nla_put_failure;
17445
17446         /* NOP and radar events don't need a netdev parameter */
17447         if (netdev) {
17448                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17449
17450                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17451                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17452                                       NL80211_ATTR_PAD))
17453                         goto nla_put_failure;
17454         }
17455
17456         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17457                 goto nla_put_failure;
17458
17459         if (nl80211_send_chandef(msg, chandef))
17460                 goto nla_put_failure;
17461
17462         genlmsg_end(msg, hdr);
17463
17464         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17465                                 NL80211_MCGRP_MLME, gfp);
17466         return;
17467
17468  nla_put_failure:
17469         nlmsg_free(msg);
17470 }
17471
17472 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17473                                        struct sta_opmode_info *sta_opmode,
17474                                        gfp_t gfp)
17475 {
17476         struct sk_buff *msg;
17477         struct wireless_dev *wdev = dev->ieee80211_ptr;
17478         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17479         void *hdr;
17480
17481         if (WARN_ON(!mac))
17482                 return;
17483
17484         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17485         if (!msg)
17486                 return;
17487
17488         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17489         if (!hdr) {
17490                 nlmsg_free(msg);
17491                 return;
17492         }
17493
17494         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17495                 goto nla_put_failure;
17496
17497         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17498                 goto nla_put_failure;
17499
17500         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17501                 goto nla_put_failure;
17502
17503         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17504             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17505                 goto nla_put_failure;
17506
17507         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17508             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17509                 goto nla_put_failure;
17510
17511         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17512             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17513                 goto nla_put_failure;
17514
17515         genlmsg_end(msg, hdr);
17516
17517         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17518                                 NL80211_MCGRP_MLME, gfp);
17519
17520         return;
17521
17522 nla_put_failure:
17523         nlmsg_free(msg);
17524 }
17525 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17526
17527 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17528                            u64 cookie, bool acked, s32 ack_signal,
17529                            bool is_valid_ack_signal, gfp_t gfp)
17530 {
17531         struct wireless_dev *wdev = dev->ieee80211_ptr;
17532         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17533         struct sk_buff *msg;
17534         void *hdr;
17535
17536         trace_cfg80211_probe_status(dev, addr, cookie, acked);
17537
17538         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17539
17540         if (!msg)
17541                 return;
17542
17543         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17544         if (!hdr) {
17545                 nlmsg_free(msg);
17546                 return;
17547         }
17548
17549         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17550             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17551             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17552             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17553                               NL80211_ATTR_PAD) ||
17554             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17555             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17556                                                 ack_signal)))
17557                 goto nla_put_failure;
17558
17559         genlmsg_end(msg, hdr);
17560
17561         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17562                                 NL80211_MCGRP_MLME, gfp);
17563         return;
17564
17565  nla_put_failure:
17566         nlmsg_free(msg);
17567 }
17568 EXPORT_SYMBOL(cfg80211_probe_status);
17569
17570 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17571                                      size_t len, int freq, int sig_dbm)
17572 {
17573         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17574         struct sk_buff *msg;
17575         void *hdr;
17576         struct cfg80211_beacon_registration *reg;
17577
17578         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17579
17580         spin_lock_bh(&rdev->beacon_registrations_lock);
17581         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17582                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17583                 if (!msg) {
17584                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17585                         return;
17586                 }
17587
17588                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17589                 if (!hdr)
17590                         goto nla_put_failure;
17591
17592                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17593                     (freq &&
17594                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17595                                   KHZ_TO_MHZ(freq)) ||
17596                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17597                                   freq % 1000))) ||
17598                     (sig_dbm &&
17599                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17600                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17601                         goto nla_put_failure;
17602
17603                 genlmsg_end(msg, hdr);
17604
17605                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17606         }
17607         spin_unlock_bh(&rdev->beacon_registrations_lock);
17608         return;
17609
17610  nla_put_failure:
17611         spin_unlock_bh(&rdev->beacon_registrations_lock);
17612         nlmsg_free(msg);
17613 }
17614 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17615
17616 #ifdef CONFIG_PM
17617 static int cfg80211_net_detect_results(struct sk_buff *msg,
17618                                        struct cfg80211_wowlan_wakeup *wakeup)
17619 {
17620         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17621         struct nlattr *nl_results, *nl_match, *nl_freqs;
17622         int i, j;
17623
17624         nl_results = nla_nest_start_noflag(msg,
17625                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17626         if (!nl_results)
17627                 return -EMSGSIZE;
17628
17629         for (i = 0; i < nd->n_matches; i++) {
17630                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17631
17632                 nl_match = nla_nest_start_noflag(msg, i);
17633                 if (!nl_match)
17634                         break;
17635
17636                 /* The SSID attribute is optional in nl80211, but for
17637                  * simplicity reasons it's always present in the
17638                  * cfg80211 structure.  If a driver can't pass the
17639                  * SSID, that needs to be changed.  A zero length SSID
17640                  * is still a valid SSID (wildcard), so it cannot be
17641                  * used for this purpose.
17642                  */
17643                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17644                             match->ssid.ssid)) {
17645                         nla_nest_cancel(msg, nl_match);
17646                         goto out;
17647                 }
17648
17649                 if (match->n_channels) {
17650                         nl_freqs = nla_nest_start_noflag(msg,
17651                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17652                         if (!nl_freqs) {
17653                                 nla_nest_cancel(msg, nl_match);
17654                                 goto out;
17655                         }
17656
17657                         for (j = 0; j < match->n_channels; j++) {
17658                                 if (nla_put_u32(msg, j, match->channels[j])) {
17659                                         nla_nest_cancel(msg, nl_freqs);
17660                                         nla_nest_cancel(msg, nl_match);
17661                                         goto out;
17662                                 }
17663                         }
17664
17665                         nla_nest_end(msg, nl_freqs);
17666                 }
17667
17668                 nla_nest_end(msg, nl_match);
17669         }
17670
17671 out:
17672         nla_nest_end(msg, nl_results);
17673         return 0;
17674 }
17675
17676 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17677                                    struct cfg80211_wowlan_wakeup *wakeup,
17678                                    gfp_t gfp)
17679 {
17680         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17681         struct sk_buff *msg;
17682         void *hdr;
17683         int size = 200;
17684
17685         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17686
17687         if (wakeup)
17688                 size += wakeup->packet_present_len;
17689
17690         msg = nlmsg_new(size, gfp);
17691         if (!msg)
17692                 return;
17693
17694         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17695         if (!hdr)
17696                 goto free_msg;
17697
17698         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17699             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17700                               NL80211_ATTR_PAD))
17701                 goto free_msg;
17702
17703         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17704                                         wdev->netdev->ifindex))
17705                 goto free_msg;
17706
17707         if (wakeup) {
17708                 struct nlattr *reasons;
17709
17710                 reasons = nla_nest_start_noflag(msg,
17711                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17712                 if (!reasons)
17713                         goto free_msg;
17714
17715                 if (wakeup->disconnect &&
17716                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17717                         goto free_msg;
17718                 if (wakeup->magic_pkt &&
17719                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17720                         goto free_msg;
17721                 if (wakeup->gtk_rekey_failure &&
17722                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17723                         goto free_msg;
17724                 if (wakeup->eap_identity_req &&
17725                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17726                         goto free_msg;
17727                 if (wakeup->four_way_handshake &&
17728                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17729                         goto free_msg;
17730                 if (wakeup->rfkill_release &&
17731                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17732                         goto free_msg;
17733
17734                 if (wakeup->pattern_idx >= 0 &&
17735                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17736                                 wakeup->pattern_idx))
17737                         goto free_msg;
17738
17739                 if (wakeup->tcp_match &&
17740                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17741                         goto free_msg;
17742
17743                 if (wakeup->tcp_connlost &&
17744                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17745                         goto free_msg;
17746
17747                 if (wakeup->tcp_nomoretokens &&
17748                     nla_put_flag(msg,
17749                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17750                         goto free_msg;
17751
17752                 if (wakeup->packet) {
17753                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17754                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17755
17756                         if (!wakeup->packet_80211) {
17757                                 pkt_attr =
17758                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17759                                 len_attr =
17760                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17761                         }
17762
17763                         if (wakeup->packet_len &&
17764                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17765                                 goto free_msg;
17766
17767                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17768                                     wakeup->packet))
17769                                 goto free_msg;
17770                 }
17771
17772                 if (wakeup->net_detect &&
17773                     cfg80211_net_detect_results(msg, wakeup))
17774                                 goto free_msg;
17775
17776                 nla_nest_end(msg, reasons);
17777         }
17778
17779         genlmsg_end(msg, hdr);
17780
17781         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17782                                 NL80211_MCGRP_MLME, gfp);
17783         return;
17784
17785  free_msg:
17786         nlmsg_free(msg);
17787 }
17788 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17789 #endif
17790
17791 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17792                                 enum nl80211_tdls_operation oper,
17793                                 u16 reason_code, gfp_t gfp)
17794 {
17795         struct wireless_dev *wdev = dev->ieee80211_ptr;
17796         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17797         struct sk_buff *msg;
17798         void *hdr;
17799
17800         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17801                                          reason_code);
17802
17803         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17804         if (!msg)
17805                 return;
17806
17807         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17808         if (!hdr) {
17809                 nlmsg_free(msg);
17810                 return;
17811         }
17812
17813         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17814             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17815             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17816             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17817             (reason_code > 0 &&
17818              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17819                 goto nla_put_failure;
17820
17821         genlmsg_end(msg, hdr);
17822
17823         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17824                                 NL80211_MCGRP_MLME, gfp);
17825         return;
17826
17827  nla_put_failure:
17828         nlmsg_free(msg);
17829 }
17830 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17831
17832 static int nl80211_netlink_notify(struct notifier_block * nb,
17833                                   unsigned long state,
17834                                   void *_notify)
17835 {
17836         struct netlink_notify *notify = _notify;
17837         struct cfg80211_registered_device *rdev;
17838         struct wireless_dev *wdev;
17839         struct cfg80211_beacon_registration *reg, *tmp;
17840
17841         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17842                 return NOTIFY_DONE;
17843
17844         rcu_read_lock();
17845
17846         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17847                 struct cfg80211_sched_scan_request *sched_scan_req;
17848
17849                 list_for_each_entry_rcu(sched_scan_req,
17850                                         &rdev->sched_scan_req_list,
17851                                         list) {
17852                         if (sched_scan_req->owner_nlportid == notify->portid) {
17853                                 sched_scan_req->nl_owner_dead = true;
17854                                 schedule_work(&rdev->sched_scan_stop_wk);
17855                         }
17856                 }
17857
17858                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17859                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17860
17861                         if (wdev->owner_nlportid == notify->portid) {
17862                                 wdev->nl_owner_dead = true;
17863                                 schedule_work(&rdev->destroy_work);
17864                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17865                                 schedule_work(&wdev->disconnect_wk);
17866                         }
17867
17868                         cfg80211_release_pmsr(wdev, notify->portid);
17869                 }
17870
17871                 spin_lock_bh(&rdev->beacon_registrations_lock);
17872                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17873                                          list) {
17874                         if (reg->nlportid == notify->portid) {
17875                                 list_del(&reg->list);
17876                                 kfree(reg);
17877                                 break;
17878                         }
17879                 }
17880                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17881         }
17882
17883         rcu_read_unlock();
17884
17885         /*
17886          * It is possible that the user space process that is controlling the
17887          * indoor setting disappeared, so notify the regulatory core.
17888          */
17889         regulatory_netlink_notify(notify->portid);
17890         return NOTIFY_OK;
17891 }
17892
17893 static struct notifier_block nl80211_netlink_notifier = {
17894         .notifier_call = nl80211_netlink_notify,
17895 };
17896
17897 void cfg80211_ft_event(struct net_device *netdev,
17898                        struct cfg80211_ft_event_params *ft_event)
17899 {
17900         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17901         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17902         struct sk_buff *msg;
17903         void *hdr;
17904
17905         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17906
17907         if (!ft_event->target_ap)
17908                 return;
17909
17910         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17911                         GFP_KERNEL);
17912         if (!msg)
17913                 return;
17914
17915         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17916         if (!hdr)
17917                 goto out;
17918
17919         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17920             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17921             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17922                 goto out;
17923
17924         if (ft_event->ies &&
17925             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17926                 goto out;
17927         if (ft_event->ric_ies &&
17928             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17929                     ft_event->ric_ies))
17930                 goto out;
17931
17932         genlmsg_end(msg, hdr);
17933
17934         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17935                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17936         return;
17937  out:
17938         nlmsg_free(msg);
17939 }
17940 EXPORT_SYMBOL(cfg80211_ft_event);
17941
17942 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17943 {
17944         struct cfg80211_registered_device *rdev;
17945         struct sk_buff *msg;
17946         void *hdr;
17947         u32 nlportid;
17948
17949         rdev = wiphy_to_rdev(wdev->wiphy);
17950         if (!rdev->crit_proto_nlportid)
17951                 return;
17952
17953         nlportid = rdev->crit_proto_nlportid;
17954         rdev->crit_proto_nlportid = 0;
17955
17956         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17957         if (!msg)
17958                 return;
17959
17960         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17961         if (!hdr)
17962                 goto nla_put_failure;
17963
17964         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17965             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17966                               NL80211_ATTR_PAD))
17967                 goto nla_put_failure;
17968
17969         genlmsg_end(msg, hdr);
17970
17971         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17972         return;
17973
17974  nla_put_failure:
17975         nlmsg_free(msg);
17976 }
17977 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17978
17979 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17980 {
17981         struct wiphy *wiphy = wdev->wiphy;
17982         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17983         struct sk_buff *msg;
17984         void *hdr;
17985
17986         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17987         if (!msg)
17988                 return;
17989
17990         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17991         if (!hdr)
17992                 goto out;
17993
17994         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17995             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17996             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17997                               NL80211_ATTR_PAD))
17998                 goto out;
17999
18000         genlmsg_end(msg, hdr);
18001
18002         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
18003                                 NL80211_MCGRP_MLME, GFP_KERNEL);
18004         return;
18005  out:
18006         nlmsg_free(msg);
18007 }
18008
18009 int cfg80211_external_auth_request(struct net_device *dev,
18010                                    struct cfg80211_external_auth_params *params,
18011                                    gfp_t gfp)
18012 {
18013         struct wireless_dev *wdev = dev->ieee80211_ptr;
18014         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
18015         struct sk_buff *msg;
18016         void *hdr;
18017
18018         if (!wdev->conn_owner_nlportid)
18019                 return -EINVAL;
18020
18021         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18022         if (!msg)
18023                 return -ENOMEM;
18024
18025         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
18026         if (!hdr)
18027                 goto nla_put_failure;
18028
18029         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18030             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18031             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
18032             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
18033                         params->action) ||
18034             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
18035             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
18036                     params->ssid.ssid))
18037                 goto nla_put_failure;
18038
18039         genlmsg_end(msg, hdr);
18040         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
18041                         wdev->conn_owner_nlportid);
18042         return 0;
18043
18044  nla_put_failure:
18045         nlmsg_free(msg);
18046         return -ENOBUFS;
18047 }
18048 EXPORT_SYMBOL(cfg80211_external_auth_request);
18049
18050 void cfg80211_update_owe_info_event(struct net_device *netdev,
18051                                     struct cfg80211_update_owe_info *owe_info,
18052                                     gfp_t gfp)
18053 {
18054         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
18055         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18056         struct sk_buff *msg;
18057         void *hdr;
18058
18059         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
18060
18061         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18062         if (!msg)
18063                 return;
18064
18065         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
18066         if (!hdr)
18067                 goto nla_put_failure;
18068
18069         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18070             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18071             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
18072                 goto nla_put_failure;
18073
18074         if (!owe_info->ie_len ||
18075             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
18076                 goto nla_put_failure;
18077
18078         genlmsg_end(msg, hdr);
18079
18080         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18081                                 NL80211_MCGRP_MLME, gfp);
18082         return;
18083
18084 nla_put_failure:
18085         genlmsg_cancel(msg, hdr);
18086         nlmsg_free(msg);
18087 }
18088 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
18089
18090 /* initialisation/exit functions */
18091
18092 int __init nl80211_init(void)
18093 {
18094         int err;
18095
18096         err = genl_register_family(&nl80211_fam);
18097         if (err)
18098                 return err;
18099
18100         err = netlink_register_notifier(&nl80211_netlink_notifier);
18101         if (err)
18102                 goto err_out;
18103
18104         return 0;
18105  err_out:
18106         genl_unregister_family(&nl80211_fam);
18107         return err;
18108 }
18109
18110 void nl80211_exit(void)
18111 {
18112         netlink_unregister_notifier(&nl80211_netlink_notifier);
18113         genl_unregister_family(&nl80211_fam);
18114 }