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) 2018-2020 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 net *netns, struct nlattr **attrs)
  68 {
  69         struct cfg80211_registered_device *rdev;
  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;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         ASSERT_RTNL();
  78
  79         if (!have_ifidx && !have_wdev_id)
  80                 return ERR_PTR(-EINVAL);
  81
  82         if (have_ifidx)
  83                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  84         if (have_wdev_id) {
  85                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  86                 wiphy_idx = wdev_id >> 32;
  87         }
  88
  89         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  90                 struct wireless_dev *wdev;
  91
  92                 if (wiphy_net(&rdev->wiphy) != netns)
  93                         continue;
  94
  95                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  96                         continue;
  97
  98                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  99                         if (have_ifidx && wdev->netdev &&
 100                             wdev->netdev->ifindex == ifidx) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 105                                 result = wdev;
 106                                 break;
 107                         }
 108                 }
 109
 110                 if (result)
 111                         break;
 112         }
 113
 114         if (result)
 115                 return result;
 116         return ERR_PTR(-ENODEV);
 117 }
 118
 119 static struct cfg80211_registered_device *
 120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 121 {
 122         struct cfg80211_registered_device *rdev = NULL, *tmp;
 123         struct net_device *netdev;
 124
 125         ASSERT_RTNL();
 126
 127         if (!attrs[NL80211_ATTR_WIPHY] &&
 128             !attrs[NL80211_ATTR_IFINDEX] &&
 129             !attrs[NL80211_ATTR_WDEV])
 130                 return ERR_PTR(-EINVAL);
 131
 132         if (attrs[NL80211_ATTR_WIPHY])
 133                 rdev = cfg80211_rdev_by_wiphy_idx(
 134                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 135
 136         if (attrs[NL80211_ATTR_WDEV]) {
 137                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 138                 struct wireless_dev *wdev;
 139                 bool found = false;
 140
 141                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 142                 if (tmp) {
 143                         /* make sure wdev exists */
 144                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 145                                 if (wdev->identifier != (u32)wdev_id)
 146                                         continue;
 147                                 found = true;
 148                                 break;
 149                         }
 150
 151                         if (!found)
 152                                 tmp = NULL;
 153
 154                         if (rdev && tmp != rdev)
 155                                 return ERR_PTR(-EINVAL);
 156                         rdev = tmp;
 157                 }
 158         }
 159
 160         if (attrs[NL80211_ATTR_IFINDEX]) {
 161                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 162
 163                 netdev = __dev_get_by_index(netns, ifindex);
 164                 if (netdev) {
 165                         if (netdev->ieee80211_ptr)
 166                                 tmp = wiphy_to_rdev(
 167                                         netdev->ieee80211_ptr->wiphy);
 168                         else
 169                                 tmp = NULL;
 170
 171                         /* not wireless device -- return error */
 172                         if (!tmp)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         /* mismatch -- return error */
 176                         if (rdev && tmp != rdev)
 177                                 return ERR_PTR(-EINVAL);
 178
 179                         rdev = tmp;
 180                 }
 181         }
 182
 183         if (!rdev)
 184                 return ERR_PTR(-ENODEV);
 185
 186         if (netns != wiphy_net(&rdev->wiphy))
 187                 return ERR_PTR(-ENODEV);
 188
 189         return rdev;
 190 }
 191
 192 /*
 193  * This function returns a pointer to the driver
 194  * that the genl_info item that is passed refers to.
 195  *
 196  * The result of this can be a PTR_ERR and hence must
 197  * be checked with IS_ERR() for errors.
 198  */
 199 static struct cfg80211_registered_device *
 200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 201 {
 202         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 203 }
 204
 205 static int validate_beacon_head(const struct nlattr *attr,
 206                                 struct netlink_ext_ack *extack)
 207 {
 208         const u8 *data = nla_data(attr);
 209         unsigned int len = nla_len(attr);
 210         const struct element *elem;
 211         const struct ieee80211_mgmt *mgmt = (void *)data;
 212         unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
 213                                          u.beacon.variable);
 214
 215         if (len < fixedlen)
 216                 goto err;
 217
 218         if (ieee80211_hdrlen(mgmt->frame_control) !=
 219             offsetof(struct ieee80211_mgmt, u.beacon))
 220                 goto err;
 221
 222         data += fixedlen;
 223         len -= fixedlen;
 224
 225         for_each_element(elem, data, len) {
 226                 /* nothing */
 227         }
 228
 229         if (for_each_element_completed(elem, data, len))
 230                 return 0;
 231
 232 err:
 233         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 234         return -EINVAL;
 235 }
 236
 237 static int validate_ie_attr(const struct nlattr *attr,
 238                             struct netlink_ext_ack *extack)
 239 {
 240         const u8 *data = nla_data(attr);
 241         unsigned int len = nla_len(attr);
 242         const struct element *elem;
 243
 244         for_each_element(elem, data, len) {
 245                 /* nothing */
 246         }
 247
 248         if (for_each_element_completed(elem, data, len))
 249                 return 0;
 250
 251         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 252         return -EINVAL;
 253 }
 254
 255 /* policy for the attributes */
 256 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 257
 258 static const struct nla_policy
 259 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 260         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 261         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 262                                         .len = U8_MAX },
 263         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 264                                              .len = U8_MAX },
 265 };
 266
 267 static const struct nla_policy
 268 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 269         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 270         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 271         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 272                 NLA_POLICY_MAX(NLA_U8, 15),
 273         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 274         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 275                 NLA_POLICY_MAX(NLA_U8, 15),
 276         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 277                 NLA_POLICY_MAX(NLA_U8, 31),
 278         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 279         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 280         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 281         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 282         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 283 };
 284
 285 static const struct nla_policy
 286 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 287         [NL80211_PMSR_TYPE_FTM] =
 288                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 289 };
 290
 291 static const struct nla_policy
 292 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 293         [NL80211_PMSR_REQ_ATTR_DATA] =
 294                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 295         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 296 };
 297
 298 static const struct nla_policy
 299 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 300         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 301         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 302         [NL80211_PMSR_PEER_ATTR_REQ] =
 303                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 304         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 305 };
 306
 307 static const struct nla_policy
 308 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 309         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 310         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 311         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 312         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 313         [NL80211_PMSR_ATTR_PEERS] =
 314                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 315 };
 316
 317 static const struct nla_policy
 318 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 319         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 320                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 321         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 322                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 323 };
 324
 325 static const struct nla_policy
 326 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 327         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 328         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 329         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 330 };
 331
 332 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 333         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 334                                     .len = NL80211_MAX_SUPP_RATES },
 335         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 336                                 .len = NL80211_MAX_SUPP_HT_RATES },
 337         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 338         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 339 };
 340
 341 static const struct nla_policy
 342 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 343         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 344         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 345         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 346         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 347         [NL80211_TID_CONFIG_ATTR_NOACK] =
 348                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 349         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 350         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 351         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 352                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 353         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 354                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 355         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 356                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 357         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 358                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 359         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 360                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 361 };
 362
 363 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 364         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 365         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 366         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 367                                       .len = 20-1 },
 368         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 369
 370         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 371         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 372         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 373                                                 NL80211_EDMG_CHANNELS_MIN,
 374                                                 NL80211_EDMG_CHANNELS_MAX),
 375         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 376                                                 NL80211_EDMG_BW_CONFIG_MIN,
 377                                                 NL80211_EDMG_BW_CONFIG_MAX),
 378
 379         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 380         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 381         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 382         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 383
 384         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 385         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 386         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 387         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 388         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 389         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 390
 391         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 392         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 393         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 394
 395         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 396         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 397
 398         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 399         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 400                                     .len = WLAN_MAX_KEY_LEN },
 401         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 402         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 403         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 404         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 405         [NL80211_ATTR_KEY_TYPE] =
 406                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 407
 408         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 409         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 410         [NL80211_ATTR_BEACON_HEAD] =
 411                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 412                                        IEEE80211_MAX_DATA_LEN),
 413         [NL80211_ATTR_BEACON_TAIL] =
 414                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 415                                        IEEE80211_MAX_DATA_LEN),
 416         [NL80211_ATTR_STA_AID] =
 417                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 418         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 419         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 420         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 421                                                .len = NL80211_MAX_SUPP_RATES },
 422         [NL80211_ATTR_STA_PLINK_ACTION] =
 423                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 424         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 425                 NLA_POLICY_RANGE(NLA_U8,
 426                                  NL80211_TX_POWER_AUTOMATIC,
 427                                  NL80211_TX_POWER_FIXED),
 428         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 429         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 430         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 431         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 432                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 433         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 434
 435         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 436         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 437
 438         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 439         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 440         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 441         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 442                                            .len = NL80211_MAX_SUPP_RATES },
 443         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 444
 445         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 446         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 447
 448         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 449
 450         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 451         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 452                                                    validate_ie_attr,
 453                                                    IEEE80211_MAX_DATA_LEN),
 454         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 455         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 456
 457         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 458                                 .len = IEEE80211_MAX_SSID_LEN },
 459         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 460         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 461         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 462         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 463         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 464                                                   NL80211_MFP_NO,
 465                                                   NL80211_MFP_OPTIONAL),
 466         [NL80211_ATTR_STA_FLAGS2] = {
 467                 .len = sizeof(struct nl80211_sta_flag_update),
 468         },
 469         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 470         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 471         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 472         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 473         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 474         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 475         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 476         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 477         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 478         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 479         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 480         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 481         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 482         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 483         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 484                                  .len = IEEE80211_MAX_DATA_LEN },
 485         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 486         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 487                                                    NL80211_PS_DISABLED,
 488                                                    NL80211_PS_ENABLED),
 489         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 490         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 491         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 492         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 493         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 494         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 495         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 496         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 497         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 498         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 499         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 500         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 501         [NL80211_ATTR_STA_PLINK_STATE] =
 502                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 503         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 504         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 505         [NL80211_ATTR_MESH_PEER_AID] =
 506                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 507         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 508         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 509         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 510         [NL80211_ATTR_HIDDEN_SSID] =
 511                 NLA_POLICY_RANGE(NLA_U32,
 512                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 513                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 514         [NL80211_ATTR_IE_PROBE_RESP] =
 515                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 516                                        IEEE80211_MAX_DATA_LEN),
 517         [NL80211_ATTR_IE_ASSOC_RESP] =
 518                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 519                                        IEEE80211_MAX_DATA_LEN),
 520         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 521         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 522         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 523         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 524         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 525         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 526         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 527         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 528         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 529         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 530         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 531                                       .len = IEEE80211_MAX_DATA_LEN },
 532         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 533         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 534         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 535                 .len = NL80211_HT_CAPABILITY_LEN
 536         },
 537         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 538         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 539         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 540         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 541         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 542         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 543         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 544         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 545         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 546         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 547         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 548                 NLA_POLICY_RANGE(NLA_U32,
 549                                  NL80211_MESH_POWER_UNKNOWN + 1,
 550                                  NL80211_MESH_POWER_MAX),
 551         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 552         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 553         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 554         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 555         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 556         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 557         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 558                 .len = NL80211_VHT_CAPABILITY_LEN,
 559         },
 560         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 561         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 562                                   .len = IEEE80211_MAX_DATA_LEN },
 563         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 564         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] = { .type = NLA_U16 },
 565         [NL80211_ATTR_PEER_AID] =
 566                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 567         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 568         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 569         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 570         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 571         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 572         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 573         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 574         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 575         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 576         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 577         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 578         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 579         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 580                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 581         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 582         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 583         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 584         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 585         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 586         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 587         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 588         [NL80211_ATTR_USER_PRIO] =
 589                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 590         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 591         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 592         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 593         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 594         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 595         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 596         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 597         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 598         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 600         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 601                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 602         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 603                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 604         },
 605         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 606         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 607         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 608         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 609         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 610                                     .len = FILS_MAX_KEK_LEN },
 611         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 612         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 613         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 614         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 615         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 616                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 617         },
 618         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 619         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 620                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 621         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 622                                           .len = FILS_ERP_MAX_REALM_LEN },
 623         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 624         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 625                                         .len = FILS_ERP_MAX_RRK_LEN },
 626         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 627         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 628         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 629         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 630
 631         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 632         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 633         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 634         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 635                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 636
 637         [NL80211_ATTR_FTM_RESPONDER] =
 638                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 639         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 640         [NL80211_ATTR_PEER_MEASUREMENTS] =
 641                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 642         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 643         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 644                                         .len = SAE_PASSWORD_MAX_LEN },
 645         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 646         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 647         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 648         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 649         [NL80211_ATTR_TID_CONFIG] =
 650                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 651         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 652         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 653         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 654         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 655         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 656         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 657         [NL80211_ATTR_HE_6GHZ_CAPABILITY] = {
 658                 .type = NLA_EXACT_LEN,
 659                 .len = sizeof(struct ieee80211_he_6ghz_capa),
 660         },
 661 };
 662
 663 /* policy for the key attributes */
 664 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 665         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 666         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 667         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 668         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 669         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 670         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 671         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 672         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 673         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 674 };
 675
 676 /* policy for the key default flags */
 677 static const struct nla_policy
 678 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 679         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 680         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 681 };
 682
 683 #ifdef CONFIG_PM
 684 /* policy for WoWLAN attributes */
 685 static const struct nla_policy
 686 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 687         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 688         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 689         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 690         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 691         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 692         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 693         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 694         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 695         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 696         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 697 };
 698
 699 static const struct nla_policy
 700 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 701         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 702         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 703         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 704         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 705         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 706         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 707         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 708                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 709         },
 710         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 711                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 712         },
 713         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 714         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 715         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 716 };
 717 #endif /* CONFIG_PM */
 718
 719 /* policy for coalesce rule attributes */
 720 static const struct nla_policy
 721 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 722         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 723         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 724                 NLA_POLICY_RANGE(NLA_U32,
 725                                  NL80211_COALESCE_CONDITION_MATCH,
 726                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 727         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 728 };
 729
 730 /* policy for GTK rekey offload attributes */
 731 static const struct nla_policy
 732 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 733         [NL80211_REKEY_DATA_KEK] = NLA_POLICY_EXACT_LEN_WARN(NL80211_KEK_LEN),
 734         [NL80211_REKEY_DATA_KCK] = NLA_POLICY_EXACT_LEN_WARN(NL80211_KCK_LEN),
 735         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN_WARN(NL80211_REPLAY_CTR_LEN),
 736 };
 737
 738 static const struct nla_policy
 739 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 740         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 741         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 742         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 743         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 744 };
 745
 746 static const struct nla_policy
 747 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 748         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 749                                                  .len = IEEE80211_MAX_SSID_LEN },
 750         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 751         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 752         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 753                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 754 };
 755
 756 static const struct nla_policy
 757 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 758         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 759         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 760 };
 761
 762 static const struct nla_policy
 763 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 764         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 765         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 766         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 767                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 768         },
 769 };
 770
 771 /* policy for NAN function attributes */
 772 static const struct nla_policy
 773 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 774         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 775         [NL80211_NAN_FUNC_SERVICE_ID] = {
 776                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 777         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 778         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 779         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 780         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 781         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 782         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 783         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 784         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 785         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 786                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 787         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 788         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 789         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 790         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 791         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 792 };
 793
 794 /* policy for Service Response Filter attributes */
 795 static const struct nla_policy
 796 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 797         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 798         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 799                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 800         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 801         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 802 };
 803
 804 /* policy for packet pattern attributes */
 805 static const struct nla_policy
 806 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 807         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 808         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 809         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 810 };
 811
 812 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 813                               struct cfg80211_registered_device **rdev,
 814                               struct wireless_dev **wdev)
 815 {
 816         int err;
 817
 818         if (!cb->args[0]) {
 819                 struct nlattr **attrbuf;
 820
 821                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 822                                   GFP_KERNEL);
 823                 if (!attrbuf)
 824                         return -ENOMEM;
 825
 826                 err = nlmsg_parse_deprecated(cb->nlh,
 827                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 828                                              attrbuf, nl80211_fam.maxattr,
 829                                              nl80211_policy, NULL);
 830                 if (err) {
 831                         kfree(attrbuf);
 832                         return err;
 833                 }
 834
 835                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 836                                                    attrbuf);
 837                 kfree(attrbuf);
 838                 if (IS_ERR(*wdev))
 839                         return PTR_ERR(*wdev);
 840                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 841                 /* 0 is the first index - add 1 to parse only once */
 842                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 843                 cb->args[1] = (*wdev)->identifier;
 844         } else {
 845                 /* subtract the 1 again here */
 846                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 847                 struct wireless_dev *tmp;
 848
 849                 if (!wiphy)
 850                         return -ENODEV;
 851                 *rdev = wiphy_to_rdev(wiphy);
 852                 *wdev = NULL;
 853
 854                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 855                         if (tmp->identifier == cb->args[1]) {
 856                                 *wdev = tmp;
 857                                 break;
 858                         }
 859                 }
 860
 861                 if (!*wdev)
 862                         return -ENODEV;
 863         }
 864
 865         return 0;
 866 }
 867
 868 /* message building helper */
 869 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 870                      int flags, u8 cmd)
 871 {
 872         /* since there is no private header just add the generic one */
 873         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 874 }
 875
 876 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 877                                      const struct ieee80211_reg_rule *rule)
 878 {
 879         int j;
 880         struct nlattr *nl_wmm_rules =
 881                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 882
 883         if (!nl_wmm_rules)
 884                 goto nla_put_failure;
 885
 886         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 887                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 888
 889                 if (!nl_wmm_rule)
 890                         goto nla_put_failure;
 891
 892                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 893                                 rule->wmm_rule.client[j].cw_min) ||
 894                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 895                                 rule->wmm_rule.client[j].cw_max) ||
 896                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 897                                rule->wmm_rule.client[j].aifsn) ||
 898                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 899                                 rule->wmm_rule.client[j].cot))
 900                         goto nla_put_failure;
 901
 902                 nla_nest_end(msg, nl_wmm_rule);
 903         }
 904         nla_nest_end(msg, nl_wmm_rules);
 905
 906         return 0;
 907
 908 nla_put_failure:
 909         return -ENOBUFS;
 910 }
 911
 912 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 913                                    struct ieee80211_channel *chan,
 914                                    bool large)
 915 {
 916         /* Some channels must be completely excluded from the
 917          * list to protect old user-space tools from breaking
 918          */
 919         if (!large && chan->flags &
 920             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 921                 return 0;
 922
 923         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 924                         chan->center_freq))
 925                 goto nla_put_failure;
 926
 927         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
 928                 goto nla_put_failure;
 929
 930         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 931             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 932                 goto nla_put_failure;
 933         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 934                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 935                         goto nla_put_failure;
 936                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 937                         goto nla_put_failure;
 938         }
 939         if (chan->flags & IEEE80211_CHAN_RADAR) {
 940                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 941                         goto nla_put_failure;
 942                 if (large) {
 943                         u32 time;
 944
 945                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 946
 947                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 948                                         chan->dfs_state))
 949                                 goto nla_put_failure;
 950                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 951                                         time))
 952                                 goto nla_put_failure;
 953                         if (nla_put_u32(msg,
 954                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 955                                         chan->dfs_cac_ms))
 956                                 goto nla_put_failure;
 957                 }
 958         }
 959
 960         if (large) {
 961                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 962                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 963                         goto nla_put_failure;
 964                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 965                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 966                         goto nla_put_failure;
 967                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 968                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 969                         goto nla_put_failure;
 970                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 971                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 972                         goto nla_put_failure;
 973                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 974                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 975                         goto nla_put_failure;
 976                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 977                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 978                         goto nla_put_failure;
 979                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 980                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 981                         goto nla_put_failure;
 982                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 983                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 984                         goto nla_put_failure;
 985                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
 986                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
 987                         goto nla_put_failure;
 988         }
 989
 990         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 991                         DBM_TO_MBM(chan->max_power)))
 992                 goto nla_put_failure;
 993
 994         if (large) {
 995                 const struct ieee80211_reg_rule *rule =
 996                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 997
 998                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 999                         if (nl80211_msg_put_wmm_rules(msg, rule))
1000                                 goto nla_put_failure;
1001                 }
1002         }
1003
1004         return 0;
1005
1006  nla_put_failure:
1007         return -ENOBUFS;
1008 }
1009
1010 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1011                                   struct cfg80211_txq_stats *txqstats,
1012                                   int attrtype)
1013 {
1014         struct nlattr *txqattr;
1015
1016 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1017         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1018             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1019                 return false;                                             \
1020         } while (0)
1021
1022         txqattr = nla_nest_start_noflag(msg, attrtype);
1023         if (!txqattr)
1024                 return false;
1025
1026         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1027         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1028         PUT_TXQVAL_U32(FLOWS, flows);
1029         PUT_TXQVAL_U32(DROPS, drops);
1030         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1031         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1032         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1033         PUT_TXQVAL_U32(COLLISIONS, collisions);
1034         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1035         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1036         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1037         nla_nest_end(msg, txqattr);
1038
1039 #undef PUT_TXQVAL_U32
1040         return true;
1041 }
1042
1043 /* netlink command implementations */
1044
1045 struct key_parse {
1046         struct key_params p;
1047         int idx;
1048         int type;
1049         bool def, defmgmt, defbeacon;
1050         bool def_uni, def_multi;
1051 };
1052
1053 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1054                                  struct key_parse *k)
1055 {
1056         struct nlattr *tb[NL80211_KEY_MAX + 1];
1057         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1058                                               nl80211_key_policy,
1059                                               info->extack);
1060         if (err)
1061                 return err;
1062
1063         k->def = !!tb[NL80211_KEY_DEFAULT];
1064         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1065         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1066
1067         if (k->def) {
1068                 k->def_uni = true;
1069                 k->def_multi = true;
1070         }
1071         if (k->defmgmt || k->defbeacon)
1072                 k->def_multi = true;
1073
1074         if (tb[NL80211_KEY_IDX])
1075                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1076
1077         if (tb[NL80211_KEY_DATA]) {
1078                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1079                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1080         }
1081
1082         if (tb[NL80211_KEY_SEQ]) {
1083                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1084                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1085         }
1086
1087         if (tb[NL80211_KEY_CIPHER])
1088                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1089
1090         if (tb[NL80211_KEY_TYPE])
1091                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1092
1093         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1094                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1095
1096                 err = nla_parse_nested_deprecated(kdt,
1097                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1098                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1099                                                   nl80211_key_default_policy,
1100                                                   info->extack);
1101                 if (err)
1102                         return err;
1103
1104                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1105                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1106         }
1107
1108         if (tb[NL80211_KEY_MODE])
1109                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1110
1111         return 0;
1112 }
1113
1114 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1115 {
1116         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1117                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1118                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1119         }
1120
1121         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1122                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1123                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1124         }
1125
1126         if (info->attrs[NL80211_ATTR_KEY_IDX])
1127                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1128
1129         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1130                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1131
1132         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1133         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1134
1135         if (k->def) {
1136                 k->def_uni = true;
1137                 k->def_multi = true;
1138         }
1139         if (k->defmgmt)
1140                 k->def_multi = true;
1141
1142         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1143                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1144
1145         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1146                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1147                 int err = nla_parse_nested_deprecated(kdt,
1148                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1149                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1150                                                       nl80211_key_default_policy,
1151                                                       info->extack);
1152                 if (err)
1153                         return err;
1154
1155                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1156                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1157         }
1158
1159         return 0;
1160 }
1161
1162 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1163 {
1164         int err;
1165
1166         memset(k, 0, sizeof(*k));
1167         k->idx = -1;
1168         k->type = -1;
1169
1170         if (info->attrs[NL80211_ATTR_KEY])
1171                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1172         else
1173                 err = nl80211_parse_key_old(info, k);
1174
1175         if (err)
1176                 return err;
1177
1178         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1179             (k->defbeacon ? 1 : 0) > 1) {
1180                 GENL_SET_ERR_MSG(info,
1181                                  "key with multiple default flags is invalid");
1182                 return -EINVAL;
1183         }
1184
1185         if (k->defmgmt || k->defbeacon) {
1186                 if (k->def_uni || !k->def_multi) {
1187                         GENL_SET_ERR_MSG(info,
1188                                          "defmgmt/defbeacon key must be mcast");
1189                         return -EINVAL;
1190                 }
1191         }
1192
1193         if (k->idx != -1) {
1194                 if (k->defmgmt) {
1195                         if (k->idx < 4 || k->idx > 5) {
1196                                 GENL_SET_ERR_MSG(info,
1197                                                  "defmgmt key idx not 4 or 5");
1198                                 return -EINVAL;
1199                         }
1200                 } else if (k->defbeacon) {
1201                         if (k->idx < 6 || k->idx > 7) {
1202                                 GENL_SET_ERR_MSG(info,
1203                                                  "defbeacon key idx not 6 or 7");
1204                                 return -EINVAL;
1205                         }
1206                 } else if (k->def) {
1207                         if (k->idx < 0 || k->idx > 3) {
1208                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1209                                 return -EINVAL;
1210                         }
1211                 } else {
1212                         if (k->idx < 0 || k->idx > 7) {
1213                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1214                                 return -EINVAL;
1215                         }
1216                 }
1217         }
1218
1219         return 0;
1220 }
1221
1222 static struct cfg80211_cached_keys *
1223 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1224                        struct genl_info *info, bool *no_ht)
1225 {
1226         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1227         struct key_parse parse;
1228         struct nlattr *key;
1229         struct cfg80211_cached_keys *result;
1230         int rem, err, def = 0;
1231         bool have_key = false;
1232
1233         nla_for_each_nested(key, keys, rem) {
1234                 have_key = true;
1235                 break;
1236         }
1237
1238         if (!have_key)
1239                 return NULL;
1240
1241         result = kzalloc(sizeof(*result), GFP_KERNEL);
1242         if (!result)
1243                 return ERR_PTR(-ENOMEM);
1244
1245         result->def = -1;
1246
1247         nla_for_each_nested(key, keys, rem) {
1248                 memset(&parse, 0, sizeof(parse));
1249                 parse.idx = -1;
1250
1251                 err = nl80211_parse_key_new(info, key, &parse);
1252                 if (err)
1253                         goto error;
1254                 err = -EINVAL;
1255                 if (!parse.p.key)
1256                         goto error;
1257                 if (parse.idx < 0 || parse.idx > 3) {
1258                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1259                         goto error;
1260                 }
1261                 if (parse.def) {
1262                         if (def) {
1263                                 GENL_SET_ERR_MSG(info,
1264                                                  "only one key can be default");
1265                                 goto error;
1266                         }
1267                         def = 1;
1268                         result->def = parse.idx;
1269                         if (!parse.def_uni || !parse.def_multi)
1270                                 goto error;
1271                 } else if (parse.defmgmt)
1272                         goto error;
1273                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1274                                                      parse.idx, false, NULL);
1275                 if (err)
1276                         goto error;
1277                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1278                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1279                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1280                         err = -EINVAL;
1281                         goto error;
1282                 }
1283                 result->params[parse.idx].cipher = parse.p.cipher;
1284                 result->params[parse.idx].key_len = parse.p.key_len;
1285                 result->params[parse.idx].key = result->data[parse.idx];
1286                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1287
1288                 /* must be WEP key if we got here */
1289                 if (no_ht)
1290                         *no_ht = true;
1291         }
1292
1293         if (result->def < 0) {
1294                 err = -EINVAL;
1295                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1296                 goto error;
1297         }
1298
1299         return result;
1300  error:
1301         kfree(result);
1302         return ERR_PTR(err);
1303 }
1304
1305 static int nl80211_key_allowed(struct wireless_dev *wdev)
1306 {
1307         ASSERT_WDEV_LOCK(wdev);
1308
1309         switch (wdev->iftype) {
1310         case NL80211_IFTYPE_AP:
1311         case NL80211_IFTYPE_AP_VLAN:
1312         case NL80211_IFTYPE_P2P_GO:
1313         case NL80211_IFTYPE_MESH_POINT:
1314                 break;
1315         case NL80211_IFTYPE_ADHOC:
1316         case NL80211_IFTYPE_STATION:
1317         case NL80211_IFTYPE_P2P_CLIENT:
1318                 if (!wdev->current_bss)
1319                         return -ENOLINK;
1320                 break;
1321         case NL80211_IFTYPE_UNSPECIFIED:
1322         case NL80211_IFTYPE_OCB:
1323         case NL80211_IFTYPE_MONITOR:
1324         case NL80211_IFTYPE_NAN:
1325         case NL80211_IFTYPE_P2P_DEVICE:
1326         case NL80211_IFTYPE_WDS:
1327         case NUM_NL80211_IFTYPES:
1328                 return -EINVAL;
1329         }
1330
1331         return 0;
1332 }
1333
1334 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1335                                                         u32 freq)
1336 {
1337         struct ieee80211_channel *chan;
1338
1339         chan = ieee80211_get_channel_khz(wiphy, freq);
1340         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1341                 return NULL;
1342         return chan;
1343 }
1344
1345 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1346 {
1347         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1348         int i;
1349
1350         if (!nl_modes)
1351                 goto nla_put_failure;
1352
1353         i = 0;
1354         while (ifmodes) {
1355                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1356                         goto nla_put_failure;
1357                 ifmodes >>= 1;
1358                 i++;
1359         }
1360
1361         nla_nest_end(msg, nl_modes);
1362         return 0;
1363
1364 nla_put_failure:
1365         return -ENOBUFS;
1366 }
1367
1368 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1369                                           struct sk_buff *msg,
1370                                           bool large)
1371 {
1372         struct nlattr *nl_combis;
1373         int i, j;
1374
1375         nl_combis = nla_nest_start_noflag(msg,
1376                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1377         if (!nl_combis)
1378                 goto nla_put_failure;
1379
1380         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1381                 const struct ieee80211_iface_combination *c;
1382                 struct nlattr *nl_combi, *nl_limits;
1383
1384                 c = &wiphy->iface_combinations[i];
1385
1386                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1387                 if (!nl_combi)
1388                         goto nla_put_failure;
1389
1390                 nl_limits = nla_nest_start_noflag(msg,
1391                                                   NL80211_IFACE_COMB_LIMITS);
1392                 if (!nl_limits)
1393                         goto nla_put_failure;
1394
1395                 for (j = 0; j < c->n_limits; j++) {
1396                         struct nlattr *nl_limit;
1397
1398                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1399                         if (!nl_limit)
1400                                 goto nla_put_failure;
1401                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1402                                         c->limits[j].max))
1403                                 goto nla_put_failure;
1404                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1405                                                 c->limits[j].types))
1406                                 goto nla_put_failure;
1407                         nla_nest_end(msg, nl_limit);
1408                 }
1409
1410                 nla_nest_end(msg, nl_limits);
1411
1412                 if (c->beacon_int_infra_match &&
1413                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1414                         goto nla_put_failure;
1415                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1416                                 c->num_different_channels) ||
1417                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1418                                 c->max_interfaces))
1419                         goto nla_put_failure;
1420                 if (large &&
1421                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1422                                 c->radar_detect_widths) ||
1423                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1424                                 c->radar_detect_regions)))
1425                         goto nla_put_failure;
1426                 if (c->beacon_int_min_gcd &&
1427                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1428                                 c->beacon_int_min_gcd))
1429                         goto nla_put_failure;
1430
1431                 nla_nest_end(msg, nl_combi);
1432         }
1433
1434         nla_nest_end(msg, nl_combis);
1435
1436         return 0;
1437 nla_put_failure:
1438         return -ENOBUFS;
1439 }
1440
1441 #ifdef CONFIG_PM
1442 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1443                                         struct sk_buff *msg)
1444 {
1445         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1446         struct nlattr *nl_tcp;
1447
1448         if (!tcp)
1449                 return 0;
1450
1451         nl_tcp = nla_nest_start_noflag(msg,
1452                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1453         if (!nl_tcp)
1454                 return -ENOBUFS;
1455
1456         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1457                         tcp->data_payload_max))
1458                 return -ENOBUFS;
1459
1460         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1461                         tcp->data_payload_max))
1462                 return -ENOBUFS;
1463
1464         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1465                 return -ENOBUFS;
1466
1467         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1468                                 sizeof(*tcp->tok), tcp->tok))
1469                 return -ENOBUFS;
1470
1471         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1472                         tcp->data_interval_max))
1473                 return -ENOBUFS;
1474
1475         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1476                         tcp->wake_payload_max))
1477                 return -ENOBUFS;
1478
1479         nla_nest_end(msg, nl_tcp);
1480         return 0;
1481 }
1482
1483 static int nl80211_send_wowlan(struct sk_buff *msg,
1484                                struct cfg80211_registered_device *rdev,
1485                                bool large)
1486 {
1487         struct nlattr *nl_wowlan;
1488
1489         if (!rdev->wiphy.wowlan)
1490                 return 0;
1491
1492         nl_wowlan = nla_nest_start_noflag(msg,
1493                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1494         if (!nl_wowlan)
1495                 return -ENOBUFS;
1496
1497         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1498              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1499             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1500              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1501             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1502              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1503             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1504              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1505             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1506              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1507             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1508              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1509             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1510              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1511             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1512              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1513                 return -ENOBUFS;
1514
1515         if (rdev->wiphy.wowlan->n_patterns) {
1516                 struct nl80211_pattern_support pat = {
1517                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1518                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1519                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1520                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1521                 };
1522
1523                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1524                             sizeof(pat), &pat))
1525                         return -ENOBUFS;
1526         }
1527
1528         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1529             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1530                         rdev->wiphy.wowlan->max_nd_match_sets))
1531                 return -ENOBUFS;
1532
1533         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1534                 return -ENOBUFS;
1535
1536         nla_nest_end(msg, nl_wowlan);
1537
1538         return 0;
1539 }
1540 #endif
1541
1542 static int nl80211_send_coalesce(struct sk_buff *msg,
1543                                  struct cfg80211_registered_device *rdev)
1544 {
1545         struct nl80211_coalesce_rule_support rule;
1546
1547         if (!rdev->wiphy.coalesce)
1548                 return 0;
1549
1550         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1551         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1552         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1553         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1554         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1555         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1556
1557         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1558                 return -ENOBUFS;
1559
1560         return 0;
1561 }
1562
1563 static int
1564 nl80211_send_iftype_data(struct sk_buff *msg,
1565                          const struct ieee80211_supported_band *sband,
1566                          const struct ieee80211_sband_iftype_data *iftdata)
1567 {
1568         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1569
1570         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1571                                 iftdata->types_mask))
1572                 return -ENOBUFS;
1573
1574         if (he_cap->has_he) {
1575                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1576                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1577                             he_cap->he_cap_elem.mac_cap_info) ||
1578                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1579                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1580                             he_cap->he_cap_elem.phy_cap_info) ||
1581                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1582                             sizeof(he_cap->he_mcs_nss_supp),
1583                             &he_cap->he_mcs_nss_supp) ||
1584                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1585                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1586                         return -ENOBUFS;
1587         }
1588
1589         if (sband->band == NL80211_BAND_6GHZ &&
1590             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1591                     sizeof(iftdata->he_6ghz_capa),
1592                     &iftdata->he_6ghz_capa))
1593                 return -ENOBUFS;
1594
1595         return 0;
1596 }
1597
1598 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1599                                       struct ieee80211_supported_band *sband)
1600 {
1601         struct nlattr *nl_rates, *nl_rate;
1602         struct ieee80211_rate *rate;
1603         int i;
1604
1605         /* add HT info */
1606         if (sband->ht_cap.ht_supported &&
1607             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1608                      sizeof(sband->ht_cap.mcs),
1609                      &sband->ht_cap.mcs) ||
1610              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1611                          sband->ht_cap.cap) ||
1612              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1613                         sband->ht_cap.ampdu_factor) ||
1614              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1615                         sband->ht_cap.ampdu_density)))
1616                 return -ENOBUFS;
1617
1618         /* add VHT info */
1619         if (sband->vht_cap.vht_supported &&
1620             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1621                      sizeof(sband->vht_cap.vht_mcs),
1622                      &sband->vht_cap.vht_mcs) ||
1623              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1624                          sband->vht_cap.cap)))
1625                 return -ENOBUFS;
1626
1627         if (sband->n_iftype_data) {
1628                 struct nlattr *nl_iftype_data =
1629                         nla_nest_start_noflag(msg,
1630                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1631                 int err;
1632
1633                 if (!nl_iftype_data)
1634                         return -ENOBUFS;
1635
1636                 for (i = 0; i < sband->n_iftype_data; i++) {
1637                         struct nlattr *iftdata;
1638
1639                         iftdata = nla_nest_start_noflag(msg, i + 1);
1640                         if (!iftdata)
1641                                 return -ENOBUFS;
1642
1643                         err = nl80211_send_iftype_data(msg, sband,
1644                                                        &sband->iftype_data[i]);
1645                         if (err)
1646                                 return err;
1647
1648                         nla_nest_end(msg, iftdata);
1649                 }
1650
1651                 nla_nest_end(msg, nl_iftype_data);
1652         }
1653
1654         /* add EDMG info */
1655         if (sband->edmg_cap.channels &&
1656             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1657                        sband->edmg_cap.channels) ||
1658             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1659                        sband->edmg_cap.bw_config)))
1660
1661                 return -ENOBUFS;
1662
1663         /* add bitrates */
1664         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1665         if (!nl_rates)
1666                 return -ENOBUFS;
1667
1668         for (i = 0; i < sband->n_bitrates; i++) {
1669                 nl_rate = nla_nest_start_noflag(msg, i);
1670                 if (!nl_rate)
1671                         return -ENOBUFS;
1672
1673                 rate = &sband->bitrates[i];
1674                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1675                                 rate->bitrate))
1676                         return -ENOBUFS;
1677                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1678                     nla_put_flag(msg,
1679                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1680                         return -ENOBUFS;
1681
1682                 nla_nest_end(msg, nl_rate);
1683         }
1684
1685         nla_nest_end(msg, nl_rates);
1686
1687         return 0;
1688 }
1689
1690 static int
1691 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1692                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1693 {
1694         u16 stypes;
1695         struct nlattr *nl_ftypes, *nl_ifs;
1696         enum nl80211_iftype ift;
1697         int i;
1698
1699         if (!mgmt_stypes)
1700                 return 0;
1701
1702         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1703         if (!nl_ifs)
1704                 return -ENOBUFS;
1705
1706         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1707                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1708                 if (!nl_ftypes)
1709                         return -ENOBUFS;
1710                 i = 0;
1711                 stypes = mgmt_stypes[ift].tx;
1712                 while (stypes) {
1713                         if ((stypes & 1) &&
1714                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1715                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1716                                 return -ENOBUFS;
1717                         stypes >>= 1;
1718                         i++;
1719                 }
1720                 nla_nest_end(msg, nl_ftypes);
1721         }
1722
1723         nla_nest_end(msg, nl_ifs);
1724
1725         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1726         if (!nl_ifs)
1727                 return -ENOBUFS;
1728
1729         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1730                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1731                 if (!nl_ftypes)
1732                         return -ENOBUFS;
1733                 i = 0;
1734                 stypes = mgmt_stypes[ift].rx;
1735                 while (stypes) {
1736                         if ((stypes & 1) &&
1737                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1738                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1739                                 return -ENOBUFS;
1740                         stypes >>= 1;
1741                         i++;
1742                 }
1743                 nla_nest_end(msg, nl_ftypes);
1744         }
1745         nla_nest_end(msg, nl_ifs);
1746
1747         return 0;
1748 }
1749
1750 #define CMD(op, n)                                                      \
1751          do {                                                           \
1752                 if (rdev->ops->op) {                                    \
1753                         i++;                                            \
1754                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1755                                 goto nla_put_failure;                   \
1756                 }                                                       \
1757         } while (0)
1758
1759 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1760                                         struct sk_buff *msg)
1761 {
1762         int i = 0;
1763
1764         /*
1765          * do *NOT* add anything into this function, new things need to be
1766          * advertised only to new versions of userspace that can deal with
1767          * the split (and they can't possibly care about new features...
1768          */
1769         CMD(add_virtual_intf, NEW_INTERFACE);
1770         CMD(change_virtual_intf, SET_INTERFACE);
1771         CMD(add_key, NEW_KEY);
1772         CMD(start_ap, START_AP);
1773         CMD(add_station, NEW_STATION);
1774         CMD(add_mpath, NEW_MPATH);
1775         CMD(update_mesh_config, SET_MESH_CONFIG);
1776         CMD(change_bss, SET_BSS);
1777         CMD(auth, AUTHENTICATE);
1778         CMD(assoc, ASSOCIATE);
1779         CMD(deauth, DEAUTHENTICATE);
1780         CMD(disassoc, DISASSOCIATE);
1781         CMD(join_ibss, JOIN_IBSS);
1782         CMD(join_mesh, JOIN_MESH);
1783         CMD(set_pmksa, SET_PMKSA);
1784         CMD(del_pmksa, DEL_PMKSA);
1785         CMD(flush_pmksa, FLUSH_PMKSA);
1786         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1787                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1788         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1789         CMD(mgmt_tx, FRAME);
1790         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1791         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1792                 i++;
1793                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1794                         goto nla_put_failure;
1795         }
1796         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1797             rdev->ops->join_mesh) {
1798                 i++;
1799                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1800                         goto nla_put_failure;
1801         }
1802         CMD(set_wds_peer, SET_WDS_PEER);
1803         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1804                 CMD(tdls_mgmt, TDLS_MGMT);
1805                 CMD(tdls_oper, TDLS_OPER);
1806         }
1807         if (rdev->wiphy.max_sched_scan_reqs)
1808                 CMD(sched_scan_start, START_SCHED_SCAN);
1809         CMD(probe_client, PROBE_CLIENT);
1810         CMD(set_noack_map, SET_NOACK_MAP);
1811         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1812                 i++;
1813                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1814                         goto nla_put_failure;
1815         }
1816         CMD(start_p2p_device, START_P2P_DEVICE);
1817         CMD(set_mcast_rate, SET_MCAST_RATE);
1818 #ifdef CONFIG_NL80211_TESTMODE
1819         CMD(testmode_cmd, TESTMODE);
1820 #endif
1821
1822         if (rdev->ops->connect || rdev->ops->auth) {
1823                 i++;
1824                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1825                         goto nla_put_failure;
1826         }
1827
1828         if (rdev->ops->disconnect || rdev->ops->deauth) {
1829                 i++;
1830                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1831                         goto nla_put_failure;
1832         }
1833
1834         return i;
1835  nla_put_failure:
1836         return -ENOBUFS;
1837 }
1838
1839 static int
1840 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1841                            struct sk_buff *msg)
1842 {
1843         struct nlattr *ftm;
1844
1845         if (!cap->ftm.supported)
1846                 return 0;
1847
1848         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1849         if (!ftm)
1850                 return -ENOBUFS;
1851
1852         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1853                 return -ENOBUFS;
1854         if (cap->ftm.non_asap &&
1855             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1856                 return -ENOBUFS;
1857         if (cap->ftm.request_lci &&
1858             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1859                 return -ENOBUFS;
1860         if (cap->ftm.request_civicloc &&
1861             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1862                 return -ENOBUFS;
1863         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1864                         cap->ftm.preambles))
1865                 return -ENOBUFS;
1866         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1867                         cap->ftm.bandwidths))
1868                 return -ENOBUFS;
1869         if (cap->ftm.max_bursts_exponent >= 0 &&
1870             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1871                         cap->ftm.max_bursts_exponent))
1872                 return -ENOBUFS;
1873         if (cap->ftm.max_ftms_per_burst &&
1874             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1875                         cap->ftm.max_ftms_per_burst))
1876                 return -ENOBUFS;
1877         if (cap->ftm.trigger_based &&
1878             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1879                 return -ENOBUFS;
1880         if (cap->ftm.non_trigger_based &&
1881             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1882                 return -ENOBUFS;
1883
1884         nla_nest_end(msg, ftm);
1885         return 0;
1886 }
1887
1888 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1889                                   struct sk_buff *msg)
1890 {
1891         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1892         struct nlattr *pmsr, *caps;
1893
1894         if (!cap)
1895                 return 0;
1896
1897         /*
1898          * we don't need to clean up anything here since the caller
1899          * will genlmsg_cancel() if we fail
1900          */
1901
1902         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1903         if (!pmsr)
1904                 return -ENOBUFS;
1905
1906         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1907                 return -ENOBUFS;
1908
1909         if (cap->report_ap_tsf &&
1910             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1911                 return -ENOBUFS;
1912
1913         if (cap->randomize_mac_addr &&
1914             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1915                 return -ENOBUFS;
1916
1917         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1918         if (!caps)
1919                 return -ENOBUFS;
1920
1921         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1922                 return -ENOBUFS;
1923
1924         nla_nest_end(msg, caps);
1925         nla_nest_end(msg, pmsr);
1926
1927         return 0;
1928 }
1929
1930 static int
1931 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
1932                               struct sk_buff *msg)
1933 {
1934         int i;
1935         struct nlattr *nested, *nested_akms;
1936         const struct wiphy_iftype_akm_suites *iftype_akms;
1937
1938         if (!rdev->wiphy.num_iftype_akm_suites ||
1939             !rdev->wiphy.iftype_akm_suites)
1940                 return 0;
1941
1942         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
1943         if (!nested)
1944                 return -ENOBUFS;
1945
1946         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
1947                 nested_akms = nla_nest_start(msg, i + 1);
1948                 if (!nested_akms)
1949                         return -ENOBUFS;
1950
1951                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
1952
1953                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
1954                                         iftype_akms->iftypes_mask))
1955                         return -ENOBUFS;
1956
1957                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
1958                             sizeof(u32) * iftype_akms->n_akm_suites,
1959                             iftype_akms->akm_suites)) {
1960                         return -ENOBUFS;
1961                 }
1962                 nla_nest_end(msg, nested_akms);
1963         }
1964
1965         nla_nest_end(msg, nested);
1966
1967         return 0;
1968 }
1969
1970 static int
1971 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
1972                                struct sk_buff *msg)
1973 {
1974         struct nlattr *supp;
1975
1976         if (!rdev->wiphy.tid_config_support.vif &&
1977             !rdev->wiphy.tid_config_support.peer)
1978                 return 0;
1979
1980         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
1981         if (!supp)
1982                 return -ENOSPC;
1983
1984         if (rdev->wiphy.tid_config_support.vif &&
1985             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
1986                               rdev->wiphy.tid_config_support.vif,
1987                               NL80211_TID_CONFIG_ATTR_PAD))
1988                 goto fail;
1989
1990         if (rdev->wiphy.tid_config_support.peer &&
1991             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
1992                               rdev->wiphy.tid_config_support.peer,
1993                               NL80211_TID_CONFIG_ATTR_PAD))
1994                 goto fail;
1995
1996         /* for now we just use the same value ... makes more sense */
1997         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
1998                        rdev->wiphy.tid_config_support.max_retry))
1999                 goto fail;
2000         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2001                        rdev->wiphy.tid_config_support.max_retry))
2002                 goto fail;
2003
2004         nla_nest_end(msg, supp);
2005
2006         return 0;
2007 fail:
2008         nla_nest_cancel(msg, supp);
2009         return -ENOBUFS;
2010 }
2011
2012 struct nl80211_dump_wiphy_state {
2013         s64 filter_wiphy;
2014         long start;
2015         long split_start, band_start, chan_start, capa_start;
2016         bool split;
2017 };
2018
2019 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2020                               enum nl80211_commands cmd,
2021                               struct sk_buff *msg, u32 portid, u32 seq,
2022                               int flags, struct nl80211_dump_wiphy_state *state)
2023 {
2024         void *hdr;
2025         struct nlattr *nl_bands, *nl_band;
2026         struct nlattr *nl_freqs, *nl_freq;
2027         struct nlattr *nl_cmds;
2028         enum nl80211_band band;
2029         struct ieee80211_channel *chan;
2030         int i;
2031         const struct ieee80211_txrx_stypes *mgmt_stypes =
2032                                 rdev->wiphy.mgmt_stypes;
2033         u32 features;
2034
2035         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2036         if (!hdr)
2037                 return -ENOBUFS;
2038
2039         if (WARN_ON(!state))
2040                 return -EINVAL;
2041
2042         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2043             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2044                            wiphy_name(&rdev->wiphy)) ||
2045             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2046                         cfg80211_rdev_list_generation))
2047                 goto nla_put_failure;
2048
2049         if (cmd != NL80211_CMD_NEW_WIPHY)
2050                 goto finish;
2051
2052         switch (state->split_start) {
2053         case 0:
2054                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2055                                rdev->wiphy.retry_short) ||
2056                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2057                                rdev->wiphy.retry_long) ||
2058                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2059                                 rdev->wiphy.frag_threshold) ||
2060                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2061                                 rdev->wiphy.rts_threshold) ||
2062                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2063                                rdev->wiphy.coverage_class) ||
2064                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2065                                rdev->wiphy.max_scan_ssids) ||
2066                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2067                                rdev->wiphy.max_sched_scan_ssids) ||
2068                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2069                                 rdev->wiphy.max_scan_ie_len) ||
2070                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2071                                 rdev->wiphy.max_sched_scan_ie_len) ||
2072                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2073                                rdev->wiphy.max_match_sets) ||
2074                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2075                                 rdev->wiphy.max_sched_scan_plans) ||
2076                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2077                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2078                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2079                                 rdev->wiphy.max_sched_scan_plan_iterations))
2080                         goto nla_put_failure;
2081
2082                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2083                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2084                         goto nla_put_failure;
2085                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2086                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2087                         goto nla_put_failure;
2088                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2089                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2090                         goto nla_put_failure;
2091                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2092                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2093                         goto nla_put_failure;
2094                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2095                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2096                         goto nla_put_failure;
2097                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2098                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2099                         goto nla_put_failure;
2100                 state->split_start++;
2101                 if (state->split)
2102                         break;
2103                 /* fall through */
2104         case 1:
2105                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2106                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2107                             rdev->wiphy.cipher_suites))
2108                         goto nla_put_failure;
2109
2110                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2111                                rdev->wiphy.max_num_pmkids))
2112                         goto nla_put_failure;
2113
2114                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2115                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2116                         goto nla_put_failure;
2117
2118                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2119                                 rdev->wiphy.available_antennas_tx) ||
2120                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2121                                 rdev->wiphy.available_antennas_rx))
2122                         goto nla_put_failure;
2123
2124                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2125                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2126                                 rdev->wiphy.probe_resp_offload))
2127                         goto nla_put_failure;
2128
2129                 if ((rdev->wiphy.available_antennas_tx ||
2130                      rdev->wiphy.available_antennas_rx) &&
2131                     rdev->ops->get_antenna) {
2132                         u32 tx_ant = 0, rx_ant = 0;
2133                         int res;
2134
2135                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2136                         if (!res) {
2137                                 if (nla_put_u32(msg,
2138                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2139                                                 tx_ant) ||
2140                                     nla_put_u32(msg,
2141                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2142                                                 rx_ant))
2143                                         goto nla_put_failure;
2144                         }
2145                 }
2146
2147                 state->split_start++;
2148                 if (state->split)
2149                         break;
2150                 /* fall through */
2151         case 2:
2152                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2153                                         rdev->wiphy.interface_modes))
2154                                 goto nla_put_failure;
2155                 state->split_start++;
2156                 if (state->split)
2157                         break;
2158                 /* fall through */
2159         case 3:
2160                 nl_bands = nla_nest_start_noflag(msg,
2161                                                  NL80211_ATTR_WIPHY_BANDS);
2162                 if (!nl_bands)
2163                         goto nla_put_failure;
2164
2165                 for (band = state->band_start;
2166                      band < NUM_NL80211_BANDS; band++) {
2167                         struct ieee80211_supported_band *sband;
2168
2169                         sband = rdev->wiphy.bands[band];
2170
2171                         if (!sband)
2172                                 continue;
2173
2174                         nl_band = nla_nest_start_noflag(msg, band);
2175                         if (!nl_band)
2176                                 goto nla_put_failure;
2177
2178                         switch (state->chan_start) {
2179                         case 0:
2180                                 if (nl80211_send_band_rateinfo(msg, sband))
2181                                         goto nla_put_failure;
2182                                 state->chan_start++;
2183                                 if (state->split)
2184                                         break;
2185                                 /* fall through */
2186                         default:
2187                                 /* add frequencies */
2188                                 nl_freqs = nla_nest_start_noflag(msg,
2189                                                                  NL80211_BAND_ATTR_FREQS);
2190                                 if (!nl_freqs)
2191                                         goto nla_put_failure;
2192
2193                                 for (i = state->chan_start - 1;
2194                                      i < sband->n_channels;
2195                                      i++) {
2196                                         nl_freq = nla_nest_start_noflag(msg,
2197                                                                         i);
2198                                         if (!nl_freq)
2199                                                 goto nla_put_failure;
2200
2201                                         chan = &sband->channels[i];
2202
2203                                         if (nl80211_msg_put_channel(
2204                                                         msg, &rdev->wiphy, chan,
2205                                                         state->split))
2206                                                 goto nla_put_failure;
2207
2208                                         nla_nest_end(msg, nl_freq);
2209                                         if (state->split)
2210                                                 break;
2211                                 }
2212                                 if (i < sband->n_channels)
2213                                         state->chan_start = i + 2;
2214                                 else
2215                                         state->chan_start = 0;
2216                                 nla_nest_end(msg, nl_freqs);
2217                         }
2218
2219                         nla_nest_end(msg, nl_band);
2220
2221                         if (state->split) {
2222                                 /* start again here */
2223                                 if (state->chan_start)
2224                                         band--;
2225                                 break;
2226                         }
2227                 }
2228                 nla_nest_end(msg, nl_bands);
2229
2230                 if (band < NUM_NL80211_BANDS)
2231                         state->band_start = band + 1;
2232                 else
2233                         state->band_start = 0;
2234
2235                 /* if bands & channels are done, continue outside */
2236                 if (state->band_start == 0 && state->chan_start == 0)
2237                         state->split_start++;
2238                 if (state->split)
2239                         break;
2240                 /* fall through */
2241         case 4:
2242                 nl_cmds = nla_nest_start_noflag(msg,
2243                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2244                 if (!nl_cmds)
2245                         goto nla_put_failure;
2246
2247                 i = nl80211_add_commands_unsplit(rdev, msg);
2248                 if (i < 0)
2249                         goto nla_put_failure;
2250                 if (state->split) {
2251                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2252                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2253                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2254                                 CMD(channel_switch, CHANNEL_SWITCH);
2255                         CMD(set_qos_map, SET_QOS_MAP);
2256                         if (rdev->wiphy.features &
2257                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2258                                 CMD(add_tx_ts, ADD_TX_TS);
2259                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2260                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2261                         CMD(update_ft_ies, UPDATE_FT_IES);
2262                 }
2263 #undef CMD
2264
2265                 nla_nest_end(msg, nl_cmds);
2266                 state->split_start++;
2267                 if (state->split)
2268                         break;
2269                 /* fall through */
2270         case 5:
2271                 if (rdev->ops->remain_on_channel &&
2272                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2273                     nla_put_u32(msg,
2274                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2275                                 rdev->wiphy.max_remain_on_channel_duration))
2276                         goto nla_put_failure;
2277
2278                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2279                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2280                         goto nla_put_failure;
2281
2282                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2283                         goto nla_put_failure;
2284                 state->split_start++;
2285                 if (state->split)
2286                         break;
2287                 /* fall through */
2288         case 6:
2289 #ifdef CONFIG_PM
2290                 if (nl80211_send_wowlan(msg, rdev, state->split))
2291                         goto nla_put_failure;
2292                 state->split_start++;
2293                 if (state->split)
2294                         break;
2295 #else
2296                 state->split_start++;
2297 #endif
2298                 /* fall through */
2299         case 7:
2300                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2301                                         rdev->wiphy.software_iftypes))
2302                         goto nla_put_failure;
2303
2304                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2305                                                    state->split))
2306                         goto nla_put_failure;
2307
2308                 state->split_start++;
2309                 if (state->split)
2310                         break;
2311                 /* fall through */
2312         case 8:
2313                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2314                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2315                                 rdev->wiphy.ap_sme_capa))
2316                         goto nla_put_failure;
2317
2318                 features = rdev->wiphy.features;
2319                 /*
2320                  * We can only add the per-channel limit information if the
2321                  * dump is split, otherwise it makes it too big. Therefore
2322                  * only advertise it in that case.
2323                  */
2324                 if (state->split)
2325                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2326                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2327                         goto nla_put_failure;
2328
2329                 if (rdev->wiphy.ht_capa_mod_mask &&
2330                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2331                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2332                             rdev->wiphy.ht_capa_mod_mask))
2333                         goto nla_put_failure;
2334
2335                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2336                     rdev->wiphy.max_acl_mac_addrs &&
2337                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2338                                 rdev->wiphy.max_acl_mac_addrs))
2339                         goto nla_put_failure;
2340
2341                 /*
2342                  * Any information below this point is only available to
2343                  * applications that can deal with it being split. This
2344                  * helps ensure that newly added capabilities don't break
2345                  * older tools by overrunning their buffers.
2346                  *
2347                  * We still increment split_start so that in the split
2348                  * case we'll continue with more data in the next round,
2349                  * but break unconditionally so unsplit data stops here.
2350                  */
2351                 state->split_start++;
2352                 break;
2353         case 9:
2354                 if (rdev->wiphy.extended_capabilities &&
2355                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2356                              rdev->wiphy.extended_capabilities_len,
2357                              rdev->wiphy.extended_capabilities) ||
2358                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2359                              rdev->wiphy.extended_capabilities_len,
2360                              rdev->wiphy.extended_capabilities_mask)))
2361                         goto nla_put_failure;
2362
2363                 if (rdev->wiphy.vht_capa_mod_mask &&
2364                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2365                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2366                             rdev->wiphy.vht_capa_mod_mask))
2367                         goto nla_put_failure;
2368
2369                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2370                             rdev->wiphy.perm_addr))
2371                         goto nla_put_failure;
2372
2373                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2374                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2375                             rdev->wiphy.addr_mask))
2376                         goto nla_put_failure;
2377
2378                 if (rdev->wiphy.n_addresses > 1) {
2379                         void *attr;
2380
2381                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2382                         if (!attr)
2383                                 goto nla_put_failure;
2384
2385                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2386                                 if (nla_put(msg, i + 1, ETH_ALEN,
2387                                             rdev->wiphy.addresses[i].addr))
2388                                         goto nla_put_failure;
2389
2390                         nla_nest_end(msg, attr);
2391                 }
2392
2393                 state->split_start++;
2394                 break;
2395         case 10:
2396                 if (nl80211_send_coalesce(msg, rdev))
2397                         goto nla_put_failure;
2398
2399                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2400                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2401                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2402                         goto nla_put_failure;
2403
2404                 if (rdev->wiphy.max_ap_assoc_sta &&
2405                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2406                                 rdev->wiphy.max_ap_assoc_sta))
2407                         goto nla_put_failure;
2408
2409                 state->split_start++;
2410                 break;
2411         case 11:
2412                 if (rdev->wiphy.n_vendor_commands) {
2413                         const struct nl80211_vendor_cmd_info *info;
2414                         struct nlattr *nested;
2415
2416                         nested = nla_nest_start_noflag(msg,
2417                                                        NL80211_ATTR_VENDOR_DATA);
2418                         if (!nested)
2419                                 goto nla_put_failure;
2420
2421                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2422                                 info = &rdev->wiphy.vendor_commands[i].info;
2423                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2424                                         goto nla_put_failure;
2425                         }
2426                         nla_nest_end(msg, nested);
2427                 }
2428
2429                 if (rdev->wiphy.n_vendor_events) {
2430                         const struct nl80211_vendor_cmd_info *info;
2431                         struct nlattr *nested;
2432
2433                         nested = nla_nest_start_noflag(msg,
2434                                                        NL80211_ATTR_VENDOR_EVENTS);
2435                         if (!nested)
2436                                 goto nla_put_failure;
2437
2438                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2439                                 info = &rdev->wiphy.vendor_events[i];
2440                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2441                                         goto nla_put_failure;
2442                         }
2443                         nla_nest_end(msg, nested);
2444                 }
2445                 state->split_start++;
2446                 break;
2447         case 12:
2448                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2449                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2450                                rdev->wiphy.max_num_csa_counters))
2451                         goto nla_put_failure;
2452
2453                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2454                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2455                         goto nla_put_failure;
2456
2457                 if (rdev->wiphy.max_sched_scan_reqs &&
2458                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2459                                 rdev->wiphy.max_sched_scan_reqs))
2460                         goto nla_put_failure;
2461
2462                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2463                             sizeof(rdev->wiphy.ext_features),
2464                             rdev->wiphy.ext_features))
2465                         goto nla_put_failure;
2466
2467                 if (rdev->wiphy.bss_select_support) {
2468                         struct nlattr *nested;
2469                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2470
2471                         nested = nla_nest_start_noflag(msg,
2472                                                        NL80211_ATTR_BSS_SELECT);
2473                         if (!nested)
2474                                 goto nla_put_failure;
2475
2476                         i = 0;
2477                         while (bss_select_support) {
2478                                 if ((bss_select_support & 1) &&
2479                                     nla_put_flag(msg, i))
2480                                         goto nla_put_failure;
2481                                 i++;
2482                                 bss_select_support >>= 1;
2483                         }
2484                         nla_nest_end(msg, nested);
2485                 }
2486
2487                 state->split_start++;
2488                 break;
2489         case 13:
2490                 if (rdev->wiphy.num_iftype_ext_capab &&
2491                     rdev->wiphy.iftype_ext_capab) {
2492                         struct nlattr *nested_ext_capab, *nested;
2493
2494                         nested = nla_nest_start_noflag(msg,
2495                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2496                         if (!nested)
2497                                 goto nla_put_failure;
2498
2499                         for (i = state->capa_start;
2500                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2501                                 const struct wiphy_iftype_ext_capab *capab;
2502
2503                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2504
2505                                 nested_ext_capab = nla_nest_start_noflag(msg,
2506                                                                          i);
2507                                 if (!nested_ext_capab ||
2508                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2509                                                 capab->iftype) ||
2510                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2511                                             capab->extended_capabilities_len,
2512                                             capab->extended_capabilities) ||
2513                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2514                                             capab->extended_capabilities_len,
2515                                             capab->extended_capabilities_mask))
2516                                         goto nla_put_failure;
2517
2518                                 nla_nest_end(msg, nested_ext_capab);
2519                                 if (state->split)
2520                                         break;
2521                         }
2522                         nla_nest_end(msg, nested);
2523                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2524                                 state->capa_start = i + 1;
2525                                 break;
2526                         }
2527                 }
2528
2529                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2530                                 rdev->wiphy.nan_supported_bands))
2531                         goto nla_put_failure;
2532
2533                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2534                                             NL80211_EXT_FEATURE_TXQS)) {
2535                         struct cfg80211_txq_stats txqstats = {};
2536                         int res;
2537
2538                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2539                         if (!res &&
2540                             !nl80211_put_txq_stats(msg, &txqstats,
2541                                                    NL80211_ATTR_TXQ_STATS))
2542                                 goto nla_put_failure;
2543
2544                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2545                                         rdev->wiphy.txq_limit))
2546                                 goto nla_put_failure;
2547                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2548                                         rdev->wiphy.txq_memory_limit))
2549                                 goto nla_put_failure;
2550                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2551                                         rdev->wiphy.txq_quantum))
2552                                 goto nla_put_failure;
2553                 }
2554
2555                 state->split_start++;
2556                 break;
2557         case 14:
2558                 if (nl80211_send_pmsr_capa(rdev, msg))
2559                         goto nla_put_failure;
2560
2561                 state->split_start++;
2562                 break;
2563         case 15:
2564                 if (rdev->wiphy.akm_suites &&
2565                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2566                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2567                             rdev->wiphy.akm_suites))
2568                         goto nla_put_failure;
2569
2570                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2571                         goto nla_put_failure;
2572
2573                 if (nl80211_put_tid_config_support(rdev, msg))
2574                         goto nla_put_failure;
2575
2576                 /* done */
2577                 state->split_start = 0;
2578                 break;
2579         }
2580  finish:
2581         genlmsg_end(msg, hdr);
2582         return 0;
2583
2584  nla_put_failure:
2585         genlmsg_cancel(msg, hdr);
2586         return -EMSGSIZE;
2587 }
2588
2589 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2590                                     struct netlink_callback *cb,
2591                                     struct nl80211_dump_wiphy_state *state)
2592 {
2593         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2594         int ret;
2595
2596         if (!tb)
2597                 return -ENOMEM;
2598
2599         ret = nlmsg_parse_deprecated(cb->nlh,
2600                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2601                                      tb, nl80211_fam.maxattr,
2602                                      nl80211_policy, NULL);
2603         /* ignore parse errors for backward compatibility */
2604         if (ret) {
2605                 ret = 0;
2606                 goto out;
2607         }
2608
2609         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2610         if (tb[NL80211_ATTR_WIPHY])
2611                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2612         if (tb[NL80211_ATTR_WDEV])
2613                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2614         if (tb[NL80211_ATTR_IFINDEX]) {
2615                 struct net_device *netdev;
2616                 struct cfg80211_registered_device *rdev;
2617                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2618
2619                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2620                 if (!netdev) {
2621                         ret = -ENODEV;
2622                         goto out;
2623                 }
2624                 if (netdev->ieee80211_ptr) {
2625                         rdev = wiphy_to_rdev(
2626                                 netdev->ieee80211_ptr->wiphy);
2627                         state->filter_wiphy = rdev->wiphy_idx;
2628                 }
2629         }
2630
2631         ret = 0;
2632 out:
2633         kfree(tb);
2634         return ret;
2635 }
2636
2637 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2638 {
2639         int idx = 0, ret;
2640         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2641         struct cfg80211_registered_device *rdev;
2642
2643         rtnl_lock();
2644         if (!state) {
2645                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2646                 if (!state) {
2647                         rtnl_unlock();
2648                         return -ENOMEM;
2649                 }
2650                 state->filter_wiphy = -1;
2651                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2652                 if (ret) {
2653                         kfree(state);
2654                         rtnl_unlock();
2655                         return ret;
2656                 }
2657                 cb->args[0] = (long)state;
2658         }
2659
2660         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2661                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2662                         continue;
2663                 if (++idx <= state->start)
2664                         continue;
2665                 if (state->filter_wiphy != -1 &&
2666                     state->filter_wiphy != rdev->wiphy_idx)
2667                         continue;
2668                 /* attempt to fit multiple wiphy data chunks into the skb */
2669                 do {
2670                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2671                                                  skb,
2672                                                  NETLINK_CB(cb->skb).portid,
2673                                                  cb->nlh->nlmsg_seq,
2674                                                  NLM_F_MULTI, state);
2675                         if (ret < 0) {
2676                                 /*
2677                                  * If sending the wiphy data didn't fit (ENOBUFS
2678                                  * or EMSGSIZE returned), this SKB is still
2679                                  * empty (so it's not too big because another
2680                                  * wiphy dataset is already in the skb) and
2681                                  * we've not tried to adjust the dump allocation
2682                                  * yet ... then adjust the alloc size to be
2683                                  * bigger, and return 1 but with the empty skb.
2684                                  * This results in an empty message being RX'ed
2685                                  * in userspace, but that is ignored.
2686                                  *
2687                                  * We can then retry with the larger buffer.
2688                                  */
2689                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2690                                     !skb->len && !state->split &&
2691                                     cb->min_dump_alloc < 4096) {
2692                                         cb->min_dump_alloc = 4096;
2693                                         state->split_start = 0;
2694                                         rtnl_unlock();
2695                                         return 1;
2696                                 }
2697                                 idx--;
2698                                 break;
2699                         }
2700                 } while (state->split_start > 0);
2701                 break;
2702         }
2703         rtnl_unlock();
2704
2705         state->start = idx;
2706
2707         return skb->len;
2708 }
2709
2710 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2711 {
2712         kfree((void *)cb->args[0]);
2713         return 0;
2714 }
2715
2716 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2717 {
2718         struct sk_buff *msg;
2719         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2720         struct nl80211_dump_wiphy_state state = {};
2721
2722         msg = nlmsg_new(4096, GFP_KERNEL);
2723         if (!msg)
2724                 return -ENOMEM;
2725
2726         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2727                                info->snd_portid, info->snd_seq, 0,
2728                                &state) < 0) {
2729                 nlmsg_free(msg);
2730                 return -ENOBUFS;
2731         }
2732
2733         return genlmsg_reply(msg, info);
2734 }
2735
2736 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2737         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2738         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2739         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2740         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2741         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2742 };
2743
2744 static int parse_txq_params(struct nlattr *tb[],
2745                             struct ieee80211_txq_params *txq_params)
2746 {
2747         u8 ac;
2748
2749         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2750             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2751             !tb[NL80211_TXQ_ATTR_AIFS])
2752                 return -EINVAL;
2753
2754         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2755         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2756         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2757         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2758         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2759
2760         if (ac >= NL80211_NUM_ACS)
2761                 return -EINVAL;
2762         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2763         return 0;
2764 }
2765
2766 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2767 {
2768         /*
2769          * You can only set the channel explicitly for WDS interfaces,
2770          * all others have their channel managed via their respective
2771          * "establish a connection" command (connect, join, ...)
2772          *
2773          * For AP/GO and mesh mode, the channel can be set with the
2774          * channel userspace API, but is only stored and passed to the
2775          * low-level driver when the AP starts or the mesh is joined.
2776          * This is for backward compatibility, userspace can also give
2777          * the channel in the start-ap or join-mesh commands instead.
2778          *
2779          * Monitors are special as they are normally slaved to
2780          * whatever else is going on, so they have their own special
2781          * operation to set the monitor channel if possible.
2782          */
2783         return !wdev ||
2784                 wdev->iftype == NL80211_IFTYPE_AP ||
2785                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2786                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2787                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2788 }
2789
2790 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2791                           struct genl_info *info,
2792                           struct cfg80211_chan_def *chandef)
2793 {
2794         struct netlink_ext_ack *extack = info->extack;
2795         struct nlattr **attrs = info->attrs;
2796         u32 control_freq;
2797
2798         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2799                 return -EINVAL;
2800
2801         control_freq = MHZ_TO_KHZ(
2802                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2803         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2804                 control_freq +=
2805                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2806
2807         memset(chandef, 0, sizeof(*chandef));
2808         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2809         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2810         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2811         chandef->freq1_offset = control_freq % 1000;
2812         chandef->center_freq2 = 0;
2813
2814         /* Primary channel not allowed */
2815         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2816                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2817                                     "Channel is disabled");
2818                 return -EINVAL;
2819         }
2820
2821         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2822                 enum nl80211_channel_type chantype;
2823
2824                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2825
2826                 switch (chantype) {
2827                 case NL80211_CHAN_NO_HT:
2828                 case NL80211_CHAN_HT20:
2829                 case NL80211_CHAN_HT40PLUS:
2830                 case NL80211_CHAN_HT40MINUS:
2831                         cfg80211_chandef_create(chandef, chandef->chan,
2832                                                 chantype);
2833                         /* user input for center_freq is incorrect */
2834                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2835                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2836                                 NL_SET_ERR_MSG_ATTR(extack,
2837                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2838                                                     "bad center frequency 1");
2839                                 return -EINVAL;
2840                         }
2841                         /* center_freq2 must be zero */
2842                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2843                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2844                                 NL_SET_ERR_MSG_ATTR(extack,
2845                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2846                                                     "center frequency 2 can't be used");
2847                                 return -EINVAL;
2848                         }
2849                         break;
2850                 default:
2851                         NL_SET_ERR_MSG_ATTR(extack,
2852                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2853                                             "invalid channel type");
2854                         return -EINVAL;
2855                 }
2856         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2857                 chandef->width =
2858                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2859                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
2860                         chandef->center_freq1 =
2861                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2862                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
2863                                 chandef->freq1_offset = nla_get_u32(
2864                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
2865                         else
2866                                 chandef->freq1_offset = 0;
2867                 }
2868                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2869                         chandef->center_freq2 =
2870                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2871         }
2872
2873         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2874                 chandef->edmg.channels =
2875                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2876
2877                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2878                         chandef->edmg.bw_config =
2879                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2880         } else {
2881                 chandef->edmg.bw_config = 0;
2882                 chandef->edmg.channels = 0;
2883         }
2884
2885         if (!cfg80211_chandef_valid(chandef)) {
2886                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2887                 return -EINVAL;
2888         }
2889
2890         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2891                                      IEEE80211_CHAN_DISABLED)) {
2892                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2893                 return -EINVAL;
2894         }
2895
2896         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2897              chandef->width == NL80211_CHAN_WIDTH_10) &&
2898             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2899                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2900                 return -EINVAL;
2901         }
2902
2903         return 0;
2904 }
2905
2906 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2907                                  struct net_device *dev,
2908                                  struct genl_info *info)
2909 {
2910         struct cfg80211_chan_def chandef;
2911         int result;
2912         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2913         struct wireless_dev *wdev = NULL;
2914
2915         if (dev)
2916                 wdev = dev->ieee80211_ptr;
2917         if (!nl80211_can_set_dev_channel(wdev))
2918                 return -EOPNOTSUPP;
2919         if (wdev)
2920                 iftype = wdev->iftype;
2921
2922         result = nl80211_parse_chandef(rdev, info, &chandef);
2923         if (result)
2924                 return result;
2925
2926         switch (iftype) {
2927         case NL80211_IFTYPE_AP:
2928         case NL80211_IFTYPE_P2P_GO:
2929                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2930                                                    iftype)) {
2931                         result = -EINVAL;
2932                         break;
2933                 }
2934                 if (wdev->beacon_interval) {
2935                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2936                             !(rdev->wiphy.features &
2937                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2938                                 result = -EBUSY;
2939                                 break;
2940                         }
2941
2942                         /* Only allow dynamic channel width changes */
2943                         if (chandef.chan != wdev->preset_chandef.chan) {
2944                                 result = -EBUSY;
2945                                 break;
2946                         }
2947                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2948                         if (result)
2949                                 break;
2950                 }
2951                 wdev->preset_chandef = chandef;
2952                 result = 0;
2953                 break;
2954         case NL80211_IFTYPE_MESH_POINT:
2955                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2956                 break;
2957         case NL80211_IFTYPE_MONITOR:
2958                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2959                 break;
2960         default:
2961                 result = -EINVAL;
2962         }
2963
2964         return result;
2965 }
2966
2967 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2968 {
2969         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2970         struct net_device *netdev = info->user_ptr[1];
2971
2972         return __nl80211_set_channel(rdev, netdev, info);
2973 }
2974
2975 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2976 {
2977         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2978         struct net_device *dev = info->user_ptr[1];
2979         struct wireless_dev *wdev = dev->ieee80211_ptr;
2980         const u8 *bssid;
2981
2982         if (!info->attrs[NL80211_ATTR_MAC])
2983                 return -EINVAL;
2984
2985         if (netif_running(dev))
2986                 return -EBUSY;
2987
2988         if (!rdev->ops->set_wds_peer)
2989                 return -EOPNOTSUPP;
2990
2991         if (wdev->iftype != NL80211_IFTYPE_WDS)
2992                 return -EOPNOTSUPP;
2993
2994         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2995         return rdev_set_wds_peer(rdev, dev, bssid);
2996 }
2997
2998 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2999 {
3000         struct cfg80211_registered_device *rdev;
3001         struct net_device *netdev = NULL;
3002         struct wireless_dev *wdev;
3003         int result = 0, rem_txq_params = 0;
3004         struct nlattr *nl_txq_params;
3005         u32 changed;
3006         u8 retry_short = 0, retry_long = 0;
3007         u32 frag_threshold = 0, rts_threshold = 0;
3008         u8 coverage_class = 0;
3009         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3010
3011         ASSERT_RTNL();
3012
3013         /*
3014          * Try to find the wiphy and netdev. Normally this
3015          * function shouldn't need the netdev, but this is
3016          * done for backward compatibility -- previously
3017          * setting the channel was done per wiphy, but now
3018          * it is per netdev. Previous userland like hostapd
3019          * also passed a netdev to set_wiphy, so that it is
3020          * possible to let that go to the right netdev!
3021          */
3022
3023         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3024                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3025
3026                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3027                 if (netdev && netdev->ieee80211_ptr)
3028                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3029                 else
3030                         netdev = NULL;
3031         }
3032
3033         if (!netdev) {
3034                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3035                                                   info->attrs);
3036                 if (IS_ERR(rdev))
3037                         return PTR_ERR(rdev);
3038                 wdev = NULL;
3039                 netdev = NULL;
3040                 result = 0;
3041         } else
3042                 wdev = netdev->ieee80211_ptr;
3043
3044         /*
3045          * end workaround code, by now the rdev is available
3046          * and locked, and wdev may or may not be NULL.
3047          */
3048
3049         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3050                 result = cfg80211_dev_rename(
3051                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3052
3053         if (result)
3054                 return result;
3055
3056         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3057                 struct ieee80211_txq_params txq_params;
3058                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3059
3060                 if (!rdev->ops->set_txq_params)
3061                         return -EOPNOTSUPP;
3062
3063                 if (!netdev)
3064                         return -EINVAL;
3065
3066                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3067                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3068                         return -EINVAL;
3069
3070                 if (!netif_running(netdev))
3071                         return -ENETDOWN;
3072
3073                 nla_for_each_nested(nl_txq_params,
3074                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3075                                     rem_txq_params) {
3076                         result = nla_parse_nested_deprecated(tb,
3077                                                              NL80211_TXQ_ATTR_MAX,
3078                                                              nl_txq_params,
3079                                                              txq_params_policy,
3080                                                              info->extack);
3081                         if (result)
3082                                 return result;
3083                         result = parse_txq_params(tb, &txq_params);
3084                         if (result)
3085                                 return result;
3086
3087                         result = rdev_set_txq_params(rdev, netdev,
3088                                                      &txq_params);
3089                         if (result)
3090                                 return result;
3091                 }
3092         }
3093
3094         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3095                 result = __nl80211_set_channel(
3096                         rdev,
3097                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3098                         info);
3099                 if (result)
3100                         return result;
3101         }
3102
3103         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3104                 struct wireless_dev *txp_wdev = wdev;
3105                 enum nl80211_tx_power_setting type;
3106                 int idx, mbm = 0;
3107
3108                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3109                         txp_wdev = NULL;
3110
3111                 if (!rdev->ops->set_tx_power)
3112                         return -EOPNOTSUPP;
3113
3114                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3115                 type = nla_get_u32(info->attrs[idx]);
3116
3117                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3118                     (type != NL80211_TX_POWER_AUTOMATIC))
3119                         return -EINVAL;
3120
3121                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3122                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3123                         mbm = nla_get_u32(info->attrs[idx]);
3124                 }
3125
3126                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3127                 if (result)
3128                         return result;
3129         }
3130
3131         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3132             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3133                 u32 tx_ant, rx_ant;
3134
3135                 if ((!rdev->wiphy.available_antennas_tx &&
3136                      !rdev->wiphy.available_antennas_rx) ||
3137                     !rdev->ops->set_antenna)
3138                         return -EOPNOTSUPP;
3139
3140                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3141                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3142
3143                 /* reject antenna configurations which don't match the
3144                  * available antenna masks, except for the "all" mask */
3145                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3146                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3147                         return -EINVAL;
3148
3149                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3150                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3151
3152                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3153                 if (result)
3154                         return result;
3155         }
3156
3157         changed = 0;
3158
3159         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3160                 retry_short = nla_get_u8(
3161                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3162
3163                 changed |= WIPHY_PARAM_RETRY_SHORT;
3164         }
3165
3166         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3167                 retry_long = nla_get_u8(
3168                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3169
3170                 changed |= WIPHY_PARAM_RETRY_LONG;
3171         }
3172
3173         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3174                 frag_threshold = nla_get_u32(
3175                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3176                 if (frag_threshold < 256)
3177                         return -EINVAL;
3178
3179                 if (frag_threshold != (u32) -1) {
3180                         /*
3181                          * Fragments (apart from the last one) are required to
3182                          * have even length. Make the fragmentation code
3183                          * simpler by stripping LSB should someone try to use
3184                          * odd threshold value.
3185                          */
3186                         frag_threshold &= ~0x1;
3187                 }
3188                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3189         }
3190
3191         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3192                 rts_threshold = nla_get_u32(
3193                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3194                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3195         }
3196
3197         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3198                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3199                         return -EINVAL;
3200
3201                 coverage_class = nla_get_u8(
3202                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3203                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3204         }
3205
3206         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3207                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3208                         return -EOPNOTSUPP;
3209
3210                 changed |= WIPHY_PARAM_DYN_ACK;
3211         }
3212
3213         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3214                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3215                                              NL80211_EXT_FEATURE_TXQS))
3216                         return -EOPNOTSUPP;
3217                 txq_limit = nla_get_u32(
3218                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3219                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3220         }
3221
3222         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3223                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3224                                              NL80211_EXT_FEATURE_TXQS))
3225                         return -EOPNOTSUPP;
3226                 txq_memory_limit = nla_get_u32(
3227                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3228                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3229         }
3230
3231         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3232                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3233                                              NL80211_EXT_FEATURE_TXQS))
3234                         return -EOPNOTSUPP;
3235                 txq_quantum = nla_get_u32(
3236                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3237                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3238         }
3239
3240         if (changed) {
3241                 u8 old_retry_short, old_retry_long;
3242                 u32 old_frag_threshold, old_rts_threshold;
3243                 u8 old_coverage_class;
3244                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3245
3246                 if (!rdev->ops->set_wiphy_params)
3247                         return -EOPNOTSUPP;
3248
3249                 old_retry_short = rdev->wiphy.retry_short;
3250                 old_retry_long = rdev->wiphy.retry_long;
3251                 old_frag_threshold = rdev->wiphy.frag_threshold;
3252                 old_rts_threshold = rdev->wiphy.rts_threshold;
3253                 old_coverage_class = rdev->wiphy.coverage_class;
3254                 old_txq_limit = rdev->wiphy.txq_limit;
3255                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3256                 old_txq_quantum = rdev->wiphy.txq_quantum;
3257
3258                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3259                         rdev->wiphy.retry_short = retry_short;
3260                 if (changed & WIPHY_PARAM_RETRY_LONG)
3261                         rdev->wiphy.retry_long = retry_long;
3262                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3263                         rdev->wiphy.frag_threshold = frag_threshold;
3264                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3265                         rdev->wiphy.rts_threshold = rts_threshold;
3266                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3267                         rdev->wiphy.coverage_class = coverage_class;
3268                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3269                         rdev->wiphy.txq_limit = txq_limit;
3270                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3271                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3272                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3273                         rdev->wiphy.txq_quantum = txq_quantum;
3274
3275                 result = rdev_set_wiphy_params(rdev, changed);
3276                 if (result) {
3277                         rdev->wiphy.retry_short = old_retry_short;
3278                         rdev->wiphy.retry_long = old_retry_long;
3279                         rdev->wiphy.frag_threshold = old_frag_threshold;
3280                         rdev->wiphy.rts_threshold = old_rts_threshold;
3281                         rdev->wiphy.coverage_class = old_coverage_class;
3282                         rdev->wiphy.txq_limit = old_txq_limit;
3283                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3284                         rdev->wiphy.txq_quantum = old_txq_quantum;
3285                         return result;
3286                 }
3287         }
3288         return 0;
3289 }
3290
3291 static int nl80211_send_chandef(struct sk_buff *msg,
3292                                 const struct cfg80211_chan_def *chandef)
3293 {
3294         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3295                 return -EINVAL;
3296
3297         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3298                         chandef->chan->center_freq))
3299                 return -ENOBUFS;
3300         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3301                         chandef->chan->freq_offset))
3302                 return -ENOBUFS;
3303         switch (chandef->width) {
3304         case NL80211_CHAN_WIDTH_20_NOHT:
3305         case NL80211_CHAN_WIDTH_20:
3306         case NL80211_CHAN_WIDTH_40:
3307                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3308                                 cfg80211_get_chandef_type(chandef)))
3309                         return -ENOBUFS;
3310                 break;
3311         default:
3312                 break;
3313         }
3314         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3315                 return -ENOBUFS;
3316         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3317                 return -ENOBUFS;
3318         if (chandef->center_freq2 &&
3319             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3320                 return -ENOBUFS;
3321         return 0;
3322 }
3323
3324 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3325                               struct cfg80211_registered_device *rdev,
3326                               struct wireless_dev *wdev,
3327                               enum nl80211_commands cmd)
3328 {
3329         struct net_device *dev = wdev->netdev;
3330         void *hdr;
3331
3332         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3333                 cmd != NL80211_CMD_DEL_INTERFACE &&
3334                 cmd != NL80211_CMD_SET_INTERFACE);
3335
3336         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3337         if (!hdr)
3338                 return -1;
3339
3340         if (dev &&
3341             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3342              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3343                 goto nla_put_failure;
3344
3345         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3346             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3347             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3348                               NL80211_ATTR_PAD) ||
3349             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3350             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3351                         rdev->devlist_generation ^
3352                         (cfg80211_rdev_list_generation << 2)) ||
3353             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3354                 goto nla_put_failure;
3355
3356         if (rdev->ops->get_channel) {
3357                 int ret;
3358                 struct cfg80211_chan_def chandef = {};
3359
3360                 ret = rdev_get_channel(rdev, wdev, &chandef);
3361                 if (ret == 0) {
3362                         if (nl80211_send_chandef(msg, &chandef))
3363                                 goto nla_put_failure;
3364                 }
3365         }
3366
3367         if (rdev->ops->get_tx_power) {
3368                 int dbm, ret;
3369
3370                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3371                 if (ret == 0 &&
3372                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3373                                 DBM_TO_MBM(dbm)))
3374                         goto nla_put_failure;
3375         }
3376
3377         wdev_lock(wdev);
3378         switch (wdev->iftype) {
3379         case NL80211_IFTYPE_AP:
3380                 if (wdev->ssid_len &&
3381                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3382                         goto nla_put_failure_locked;
3383                 break;
3384         case NL80211_IFTYPE_STATION:
3385         case NL80211_IFTYPE_P2P_CLIENT:
3386         case NL80211_IFTYPE_ADHOC: {
3387                 const u8 *ssid_ie;
3388                 if (!wdev->current_bss)
3389                         break;
3390                 rcu_read_lock();
3391                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3392                                                WLAN_EID_SSID);
3393                 if (ssid_ie &&
3394                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3395                         goto nla_put_failure_rcu_locked;
3396                 rcu_read_unlock();
3397                 break;
3398                 }
3399         default:
3400                 /* nothing */
3401                 break;
3402         }
3403         wdev_unlock(wdev);
3404
3405         if (rdev->ops->get_txq_stats) {
3406                 struct cfg80211_txq_stats txqstats = {};
3407                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3408
3409                 if (ret == 0 &&
3410                     !nl80211_put_txq_stats(msg, &txqstats,
3411                                            NL80211_ATTR_TXQ_STATS))
3412                         goto nla_put_failure;
3413         }
3414
3415         genlmsg_end(msg, hdr);
3416         return 0;
3417
3418  nla_put_failure_rcu_locked:
3419         rcu_read_unlock();
3420  nla_put_failure_locked:
3421         wdev_unlock(wdev);
3422  nla_put_failure:
3423         genlmsg_cancel(msg, hdr);
3424         return -EMSGSIZE;
3425 }
3426
3427 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3428 {
3429         int wp_idx = 0;
3430         int if_idx = 0;
3431         int wp_start = cb->args[0];
3432         int if_start = cb->args[1];
3433         int filter_wiphy = -1;
3434         struct cfg80211_registered_device *rdev;
3435         struct wireless_dev *wdev;
3436         int ret;
3437
3438         rtnl_lock();
3439         if (!cb->args[2]) {
3440                 struct nl80211_dump_wiphy_state state = {
3441                         .filter_wiphy = -1,
3442                 };
3443
3444                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3445                 if (ret)
3446                         goto out_unlock;
3447
3448                 filter_wiphy = state.filter_wiphy;
3449
3450                 /*
3451                  * if filtering, set cb->args[2] to +1 since 0 is the default
3452                  * value needed to determine that parsing is necessary.
3453                  */
3454                 if (filter_wiphy >= 0)
3455                         cb->args[2] = filter_wiphy + 1;
3456                 else
3457                         cb->args[2] = -1;
3458         } else if (cb->args[2] > 0) {
3459                 filter_wiphy = cb->args[2] - 1;
3460         }
3461
3462         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3463                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3464                         continue;
3465                 if (wp_idx < wp_start) {
3466                         wp_idx++;
3467                         continue;
3468                 }
3469
3470                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3471                         continue;
3472
3473                 if_idx = 0;
3474
3475                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3476                         if (if_idx < if_start) {
3477                                 if_idx++;
3478                                 continue;
3479                         }
3480                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3481                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3482                                                rdev, wdev,
3483                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3484                                 goto out;
3485                         }
3486                         if_idx++;
3487                 }
3488
3489                 wp_idx++;
3490         }
3491  out:
3492         cb->args[0] = wp_idx;
3493         cb->args[1] = if_idx;
3494
3495         ret = skb->len;
3496  out_unlock:
3497         rtnl_unlock();
3498
3499         return ret;
3500 }
3501
3502 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3503 {
3504         struct sk_buff *msg;
3505         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3506         struct wireless_dev *wdev = info->user_ptr[1];
3507
3508         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3509         if (!msg)
3510                 return -ENOMEM;
3511
3512         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3513                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3514                 nlmsg_free(msg);
3515                 return -ENOBUFS;
3516         }
3517
3518         return genlmsg_reply(msg, info);
3519 }
3520
3521 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3522         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3523         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3524         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3525         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3526         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3527         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3528 };
3529
3530 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3531 {
3532         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3533         int flag;
3534
3535         *mntrflags = 0;
3536
3537         if (!nla)
3538                 return -EINVAL;
3539
3540         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3541                 return -EINVAL;
3542
3543         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3544                 if (flags[flag])
3545                         *mntrflags |= (1<<flag);
3546
3547         *mntrflags |= MONITOR_FLAG_CHANGED;
3548
3549         return 0;
3550 }
3551
3552 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3553                                      enum nl80211_iftype type,
3554                                      struct genl_info *info,
3555                                      struct vif_params *params)
3556 {
3557         bool change = false;
3558         int err;
3559
3560         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3561                 if (type != NL80211_IFTYPE_MONITOR)
3562                         return -EINVAL;
3563
3564                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3565                                           &params->flags);
3566                 if (err)
3567                         return err;
3568
3569                 change = true;
3570         }
3571
3572         if (params->flags & MONITOR_FLAG_ACTIVE &&
3573             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3574                 return -EOPNOTSUPP;
3575
3576         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3577                 const u8 *mumimo_groups;
3578                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3579
3580                 if (type != NL80211_IFTYPE_MONITOR)
3581                         return -EINVAL;
3582
3583                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3584                         return -EOPNOTSUPP;
3585
3586                 mumimo_groups =
3587                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3588
3589                 /* bits 0 and 63 are reserved and must be zero */
3590                 if ((mumimo_groups[0] & BIT(0)) ||
3591                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3592                         return -EINVAL;
3593
3594                 params->vht_mumimo_groups = mumimo_groups;
3595                 change = true;
3596         }
3597
3598         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3599                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3600
3601                 if (type != NL80211_IFTYPE_MONITOR)
3602                         return -EINVAL;
3603
3604                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3605                         return -EOPNOTSUPP;
3606
3607                 params->vht_mumimo_follow_addr =
3608                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3609                 change = true;
3610         }
3611
3612         return change ? 1 : 0;
3613 }
3614
3615 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3616                                struct net_device *netdev, u8 use_4addr,
3617                                enum nl80211_iftype iftype)
3618 {
3619         if (!use_4addr) {
3620                 if (netdev && netif_is_bridge_port(netdev))
3621                         return -EBUSY;
3622                 return 0;
3623         }
3624
3625         switch (iftype) {
3626         case NL80211_IFTYPE_AP_VLAN:
3627                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3628                         return 0;
3629                 break;
3630         case NL80211_IFTYPE_STATION:
3631                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3632                         return 0;
3633                 break;
3634         default:
3635                 break;
3636         }
3637
3638         return -EOPNOTSUPP;
3639 }
3640
3641 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3642 {
3643         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3644         struct vif_params params;
3645         int err;
3646         enum nl80211_iftype otype, ntype;
3647         struct net_device *dev = info->user_ptr[1];
3648         bool change = false;
3649
3650         memset(&params, 0, sizeof(params));
3651
3652         otype = ntype = dev->ieee80211_ptr->iftype;
3653
3654         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3655                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3656                 if (otype != ntype)
3657                         change = true;
3658         }
3659
3660         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3661                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3662
3663                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3664                         return -EINVAL;
3665                 if (netif_running(dev))
3666                         return -EBUSY;
3667
3668                 wdev_lock(wdev);
3669                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3670                              IEEE80211_MAX_MESH_ID_LEN);
3671                 wdev->mesh_id_up_len =
3672                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3673                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3674                        wdev->mesh_id_up_len);
3675                 wdev_unlock(wdev);
3676         }
3677
3678         if (info->attrs[NL80211_ATTR_4ADDR]) {
3679                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3680                 change = true;
3681                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3682                 if (err)
3683                         return err;
3684         } else {
3685                 params.use_4addr = -1;
3686         }
3687
3688         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3689         if (err < 0)
3690                 return err;
3691         if (err > 0)
3692                 change = true;
3693
3694         if (change)
3695                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3696         else
3697                 err = 0;
3698
3699         if (!err && params.use_4addr != -1)
3700                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3701
3702         if (change && !err) {
3703                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3704
3705                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3706         }
3707
3708         return err;
3709 }
3710
3711 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3712 {
3713         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3714         struct vif_params params;
3715         struct wireless_dev *wdev;
3716         struct sk_buff *msg;
3717         int err;
3718         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3719
3720         /* to avoid failing a new interface creation due to pending removal */
3721         cfg80211_destroy_ifaces(rdev);
3722
3723         memset(&params, 0, sizeof(params));
3724
3725         if (!info->attrs[NL80211_ATTR_IFNAME])
3726                 return -EINVAL;
3727
3728         if (info->attrs[NL80211_ATTR_IFTYPE])
3729                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3730
3731         if (!rdev->ops->add_virtual_intf)
3732                 return -EOPNOTSUPP;
3733
3734         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3735              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3736             info->attrs[NL80211_ATTR_MAC]) {
3737                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3738                            ETH_ALEN);
3739                 if (!is_valid_ether_addr(params.macaddr))
3740                         return -EADDRNOTAVAIL;
3741         }
3742
3743         if (info->attrs[NL80211_ATTR_4ADDR]) {
3744                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3745                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3746                 if (err)
3747                         return err;
3748         }
3749
3750         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3751                 return -EOPNOTSUPP;
3752
3753         err = nl80211_parse_mon_options(rdev, type, info, &params);
3754         if (err < 0)
3755                 return err;
3756
3757         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3758         if (!msg)
3759                 return -ENOMEM;
3760
3761         wdev = rdev_add_virtual_intf(rdev,
3762                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3763                                 NET_NAME_USER, type, &params);
3764         if (WARN_ON(!wdev)) {
3765                 nlmsg_free(msg);
3766                 return -EPROTO;
3767         } else if (IS_ERR(wdev)) {
3768                 nlmsg_free(msg);
3769                 return PTR_ERR(wdev);
3770         }
3771
3772         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3773                 wdev->owner_nlportid = info->snd_portid;
3774
3775         switch (type) {
3776         case NL80211_IFTYPE_MESH_POINT:
3777                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3778                         break;
3779                 wdev_lock(wdev);
3780                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3781                              IEEE80211_MAX_MESH_ID_LEN);
3782                 wdev->mesh_id_up_len =
3783                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3784                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3785                        wdev->mesh_id_up_len);
3786                 wdev_unlock(wdev);
3787                 break;
3788         case NL80211_IFTYPE_NAN:
3789         case NL80211_IFTYPE_P2P_DEVICE:
3790                 /*
3791                  * P2P Device and NAN do not have a netdev, so don't go
3792                  * through the netdev notifier and must be added here
3793                  */
3794                 cfg80211_init_wdev(rdev, wdev);
3795                 break;
3796         default:
3797                 break;
3798         }
3799
3800         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3801                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3802                 nlmsg_free(msg);
3803                 return -ENOBUFS;
3804         }
3805
3806         return genlmsg_reply(msg, info);
3807 }
3808
3809 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3810 {
3811         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3812         struct wireless_dev *wdev = info->user_ptr[1];
3813
3814         if (!rdev->ops->del_virtual_intf)
3815                 return -EOPNOTSUPP;
3816
3817         /*
3818          * If we remove a wireless device without a netdev then clear
3819          * user_ptr[1] so that nl80211_post_doit won't dereference it
3820          * to check if it needs to do dev_put(). Otherwise it crashes
3821          * since the wdev has been freed, unlike with a netdev where
3822          * we need the dev_put() for the netdev to really be freed.
3823          */
3824         if (!wdev->netdev)
3825                 info->user_ptr[1] = NULL;
3826
3827         return rdev_del_virtual_intf(rdev, wdev);
3828 }
3829
3830 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3831 {
3832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3833         struct net_device *dev = info->user_ptr[1];
3834         u16 noack_map;
3835
3836         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3837                 return -EINVAL;
3838
3839         if (!rdev->ops->set_noack_map)
3840                 return -EOPNOTSUPP;
3841
3842         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3843
3844         return rdev_set_noack_map(rdev, dev, noack_map);
3845 }
3846
3847 struct get_key_cookie {
3848         struct sk_buff *msg;
3849         int error;
3850         int idx;
3851 };
3852
3853 static void get_key_callback(void *c, struct key_params *params)
3854 {
3855         struct nlattr *key;
3856         struct get_key_cookie *cookie = c;
3857
3858         if ((params->key &&
3859              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3860                      params->key_len, params->key)) ||
3861             (params->seq &&
3862              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3863                      params->seq_len, params->seq)) ||
3864             (params->cipher &&
3865              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3866                          params->cipher)))
3867                 goto nla_put_failure;
3868
3869         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3870         if (!key)
3871                 goto nla_put_failure;
3872
3873         if ((params->key &&
3874              nla_put(cookie->msg, NL80211_KEY_DATA,
3875                      params->key_len, params->key)) ||
3876             (params->seq &&
3877              nla_put(cookie->msg, NL80211_KEY_SEQ,
3878                      params->seq_len, params->seq)) ||
3879             (params->cipher &&
3880              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3881                          params->cipher)))
3882                 goto nla_put_failure;
3883
3884         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3885                 goto nla_put_failure;
3886
3887         nla_nest_end(cookie->msg, key);
3888
3889         return;
3890  nla_put_failure:
3891         cookie->error = 1;
3892 }
3893
3894 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3895 {
3896         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3897         int err;
3898         struct net_device *dev = info->user_ptr[1];
3899         u8 key_idx = 0;
3900         const u8 *mac_addr = NULL;
3901         bool pairwise;
3902         struct get_key_cookie cookie = {
3903                 .error = 0,
3904         };
3905         void *hdr;
3906         struct sk_buff *msg;
3907         bool bigtk_support = false;
3908
3909         if (wiphy_ext_feature_isset(&rdev->wiphy,
3910                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
3911                 bigtk_support = true;
3912
3913         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
3914              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
3915             wiphy_ext_feature_isset(&rdev->wiphy,
3916                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
3917                 bigtk_support = true;
3918
3919         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
3920                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3921
3922                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
3923                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
3924                         return -EINVAL;
3925                 }
3926         }
3927
3928         if (info->attrs[NL80211_ATTR_MAC])
3929                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3930
3931         pairwise = !!mac_addr;
3932         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3933                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3934
3935                 if (kt != NL80211_KEYTYPE_GROUP &&
3936                     kt != NL80211_KEYTYPE_PAIRWISE)
3937                         return -EINVAL;
3938                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3939         }
3940
3941         if (!rdev->ops->get_key)
3942                 return -EOPNOTSUPP;
3943
3944         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3945                 return -ENOENT;
3946
3947         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3948         if (!msg)
3949                 return -ENOMEM;
3950
3951         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3952                              NL80211_CMD_NEW_KEY);
3953         if (!hdr)
3954                 goto nla_put_failure;
3955
3956         cookie.msg = msg;
3957         cookie.idx = key_idx;
3958
3959         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3960             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3961                 goto nla_put_failure;
3962         if (mac_addr &&
3963             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3964                 goto nla_put_failure;
3965
3966         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3967                            get_key_callback);
3968
3969         if (err)
3970                 goto free_msg;
3971
3972         if (cookie.error)
3973                 goto nla_put_failure;
3974
3975         genlmsg_end(msg, hdr);
3976         return genlmsg_reply(msg, info);
3977
3978  nla_put_failure:
3979         err = -ENOBUFS;
3980  free_msg:
3981         nlmsg_free(msg);
3982         return err;
3983 }
3984
3985 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3986 {
3987         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3988         struct key_parse key;
3989         int err;
3990         struct net_device *dev = info->user_ptr[1];
3991
3992         err = nl80211_parse_key(info, &key);
3993         if (err)
3994                 return err;
3995
3996         if (key.idx < 0)
3997                 return -EINVAL;
3998
3999         /* Only support setting default key and
4000          * Extended Key ID action NL80211_KEY_SET_TX.
4001          */
4002         if (!key.def && !key.defmgmt && !key.defbeacon &&
4003             !(key.p.mode == NL80211_KEY_SET_TX))
4004                 return -EINVAL;
4005
4006         wdev_lock(dev->ieee80211_ptr);
4007
4008         if (key.def) {
4009                 if (!rdev->ops->set_default_key) {
4010                         err = -EOPNOTSUPP;
4011                         goto out;
4012                 }
4013
4014                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4015                 if (err)
4016                         goto out;
4017
4018                 err = rdev_set_default_key(rdev, dev, key.idx,
4019                                                  key.def_uni, key.def_multi);
4020
4021                 if (err)
4022                         goto out;
4023
4024 #ifdef CONFIG_CFG80211_WEXT
4025                 dev->ieee80211_ptr->wext.default_key = key.idx;
4026 #endif
4027         } else if (key.defmgmt) {
4028                 if (key.def_uni || !key.def_multi) {
4029                         err = -EINVAL;
4030                         goto out;
4031                 }
4032
4033                 if (!rdev->ops->set_default_mgmt_key) {
4034                         err = -EOPNOTSUPP;
4035                         goto out;
4036                 }
4037
4038                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4039                 if (err)
4040                         goto out;
4041
4042                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4043                 if (err)
4044                         goto out;
4045
4046 #ifdef CONFIG_CFG80211_WEXT
4047                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4048 #endif
4049         } else if (key.defbeacon) {
4050                 if (key.def_uni || !key.def_multi) {
4051                         err = -EINVAL;
4052                         goto out;
4053                 }
4054
4055                 if (!rdev->ops->set_default_beacon_key) {
4056                         err = -EOPNOTSUPP;
4057                         goto out;
4058                 }
4059
4060                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4061                 if (err)
4062                         goto out;
4063
4064                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4065                 if (err)
4066                         goto out;
4067         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4068                    wiphy_ext_feature_isset(&rdev->wiphy,
4069                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4070                 u8 *mac_addr = NULL;
4071
4072                 if (info->attrs[NL80211_ATTR_MAC])
4073                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4074
4075                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4076                         err = -EINVAL;
4077                         goto out;
4078                 }
4079
4080                 err = rdev_add_key(rdev, dev, key.idx,
4081                                    NL80211_KEYTYPE_PAIRWISE,
4082                                    mac_addr, &key.p);
4083         } else {
4084                 err = -EINVAL;
4085         }
4086  out:
4087         wdev_unlock(dev->ieee80211_ptr);
4088
4089         return err;
4090 }
4091
4092 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4093 {
4094         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4095         int err;
4096         struct net_device *dev = info->user_ptr[1];
4097         struct key_parse key;
4098         const u8 *mac_addr = NULL;
4099
4100         err = nl80211_parse_key(info, &key);
4101         if (err)
4102                 return err;
4103
4104         if (!key.p.key) {
4105                 GENL_SET_ERR_MSG(info, "no key");
4106                 return -EINVAL;
4107         }
4108
4109         if (info->attrs[NL80211_ATTR_MAC])
4110                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4111
4112         if (key.type == -1) {
4113                 if (mac_addr)
4114                         key.type = NL80211_KEYTYPE_PAIRWISE;
4115                 else
4116                         key.type = NL80211_KEYTYPE_GROUP;
4117         }
4118
4119         /* for now */
4120         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4121             key.type != NL80211_KEYTYPE_GROUP) {
4122                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4123                 return -EINVAL;
4124         }
4125
4126         if (key.type == NL80211_KEYTYPE_GROUP &&
4127             info->attrs[NL80211_ATTR_VLAN_ID])
4128                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4129
4130         if (!rdev->ops->add_key)
4131                 return -EOPNOTSUPP;
4132
4133         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4134                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4135                                            mac_addr)) {
4136                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4137                 return -EINVAL;
4138         }
4139
4140         wdev_lock(dev->ieee80211_ptr);
4141         err = nl80211_key_allowed(dev->ieee80211_ptr);
4142         if (err)
4143                 GENL_SET_ERR_MSG(info, "key not allowed");
4144         if (!err) {
4145                 err = rdev_add_key(rdev, dev, key.idx,
4146                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4147                                     mac_addr, &key.p);
4148                 if (err)
4149                         GENL_SET_ERR_MSG(info, "key addition failed");
4150         }
4151         wdev_unlock(dev->ieee80211_ptr);
4152
4153         return err;
4154 }
4155
4156 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4157 {
4158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4159         int err;
4160         struct net_device *dev = info->user_ptr[1];
4161         u8 *mac_addr = NULL;
4162         struct key_parse key;
4163
4164         err = nl80211_parse_key(info, &key);
4165         if (err)
4166                 return err;
4167
4168         if (info->attrs[NL80211_ATTR_MAC])
4169                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4170
4171         if (key.type == -1) {
4172                 if (mac_addr)
4173                         key.type = NL80211_KEYTYPE_PAIRWISE;
4174                 else
4175                         key.type = NL80211_KEYTYPE_GROUP;
4176         }
4177
4178         /* for now */
4179         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4180             key.type != NL80211_KEYTYPE_GROUP)
4181                 return -EINVAL;
4182
4183         if (!rdev->ops->del_key)
4184                 return -EOPNOTSUPP;
4185
4186         wdev_lock(dev->ieee80211_ptr);
4187         err = nl80211_key_allowed(dev->ieee80211_ptr);
4188
4189         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4190             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4191                 err = -ENOENT;
4192
4193         if (!err)
4194                 err = rdev_del_key(rdev, dev, key.idx,
4195                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4196                                    mac_addr);
4197
4198 #ifdef CONFIG_CFG80211_WEXT
4199         if (!err) {
4200                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4201                         dev->ieee80211_ptr->wext.default_key = -1;
4202                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4203                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4204         }
4205 #endif
4206         wdev_unlock(dev->ieee80211_ptr);
4207
4208         return err;
4209 }
4210
4211 /* This function returns an error or the number of nested attributes */
4212 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4213 {
4214         struct nlattr *attr;
4215         int n_entries = 0, tmp;
4216
4217         nla_for_each_nested(attr, nl_attr, tmp) {
4218                 if (nla_len(attr) != ETH_ALEN)
4219                         return -EINVAL;
4220
4221                 n_entries++;
4222         }
4223
4224         return n_entries;
4225 }
4226
4227 /*
4228  * This function parses ACL information and allocates memory for ACL data.
4229  * On successful return, the calling function is responsible to free the
4230  * ACL buffer returned by this function.
4231  */
4232 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4233                                                 struct genl_info *info)
4234 {
4235         enum nl80211_acl_policy acl_policy;
4236         struct nlattr *attr;
4237         struct cfg80211_acl_data *acl;
4238         int i = 0, n_entries, tmp;
4239
4240         if (!wiphy->max_acl_mac_addrs)
4241                 return ERR_PTR(-EOPNOTSUPP);
4242
4243         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4244                 return ERR_PTR(-EINVAL);
4245
4246         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4247         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4248             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4249                 return ERR_PTR(-EINVAL);
4250
4251         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4252                 return ERR_PTR(-EINVAL);
4253
4254         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4255         if (n_entries < 0)
4256                 return ERR_PTR(n_entries);
4257
4258         if (n_entries > wiphy->max_acl_mac_addrs)
4259                 return ERR_PTR(-ENOTSUPP);
4260
4261         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4262         if (!acl)
4263                 return ERR_PTR(-ENOMEM);
4264
4265         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4266                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4267                 i++;
4268         }
4269
4270         acl->n_acl_entries = n_entries;
4271         acl->acl_policy = acl_policy;
4272
4273         return acl;
4274 }
4275
4276 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4277 {
4278         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4279         struct net_device *dev = info->user_ptr[1];
4280         struct cfg80211_acl_data *acl;
4281         int err;
4282
4283         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4284             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4285                 return -EOPNOTSUPP;
4286
4287         if (!dev->ieee80211_ptr->beacon_interval)
4288                 return -EINVAL;
4289
4290         acl = parse_acl_data(&rdev->wiphy, info);
4291         if (IS_ERR(acl))
4292                 return PTR_ERR(acl);
4293
4294         err = rdev_set_mac_acl(rdev, dev, acl);
4295
4296         kfree(acl);
4297
4298         return err;
4299 }
4300
4301 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4302                            u8 *rates, u8 rates_len)
4303 {
4304         u8 i;
4305         u32 mask = 0;
4306
4307         for (i = 0; i < rates_len; i++) {
4308                 int rate = (rates[i] & 0x7f) * 5;
4309                 int ridx;
4310
4311                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4312                         struct ieee80211_rate *srate =
4313                                 &sband->bitrates[ridx];
4314                         if (rate == srate->bitrate) {
4315                                 mask |= 1 << ridx;
4316                                 break;
4317                         }
4318                 }
4319                 if (ridx == sband->n_bitrates)
4320                         return 0; /* rate not found */
4321         }
4322
4323         return mask;
4324 }
4325
4326 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4327                                u8 *rates, u8 rates_len,
4328                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4329 {
4330         u8 i;
4331
4332         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4333
4334         for (i = 0; i < rates_len; i++) {
4335                 int ridx, rbit;
4336
4337                 ridx = rates[i] / 8;
4338                 rbit = BIT(rates[i] % 8);
4339
4340                 /* check validity */
4341                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4342                         return false;
4343
4344                 /* check availability */
4345                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4346                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4347                         mcs[ridx] |= rbit;
4348                 else
4349                         return false;
4350         }
4351
4352         return true;
4353 }
4354
4355 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4356 {
4357         u16 mcs_mask = 0;
4358
4359         switch (vht_mcs_map) {
4360         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4361                 break;
4362         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4363                 mcs_mask = 0x00FF;
4364                 break;
4365         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4366                 mcs_mask = 0x01FF;
4367                 break;
4368         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4369                 mcs_mask = 0x03FF;
4370                 break;
4371         default:
4372                 break;
4373         }
4374
4375         return mcs_mask;
4376 }
4377
4378 static void vht_build_mcs_mask(u16 vht_mcs_map,
4379                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4380 {
4381         u8 nss;
4382
4383         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4384                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4385                 vht_mcs_map >>= 2;
4386         }
4387 }
4388
4389 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4390                              struct nl80211_txrate_vht *txrate,
4391                              u16 mcs[NL80211_VHT_NSS_MAX])
4392 {
4393         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4394         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4395         u8 i;
4396
4397         if (!sband->vht_cap.vht_supported)
4398                 return false;
4399
4400         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4401
4402         /* Build vht_mcs_mask from VHT capabilities */
4403         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4404
4405         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4406                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4407                         mcs[i] = txrate->mcs[i];
4408                 else
4409                         return false;
4410         }
4411
4412         return true;
4413 }
4414
4415 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4416                                          struct nlattr *attrs[],
4417                                          enum nl80211_attrs attr,
4418                                          struct cfg80211_bitrate_mask *mask)
4419 {
4420         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4421         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4422         int rem, i;
4423         struct nlattr *tx_rates;
4424         struct ieee80211_supported_band *sband;
4425         u16 vht_tx_mcs_map;
4426
4427         memset(mask, 0, sizeof(*mask));
4428         /* Default to all rates enabled */
4429         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4430                 sband = rdev->wiphy.bands[i];
4431
4432                 if (!sband)
4433                         continue;
4434
4435                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4436                 memcpy(mask->control[i].ht_mcs,
4437                        sband->ht_cap.mcs.rx_mask,
4438                        sizeof(mask->control[i].ht_mcs));
4439
4440                 if (!sband->vht_cap.vht_supported)
4441                         continue;
4442
4443                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4444                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4445         }
4446
4447         /* if no rates are given set it back to the defaults */
4448         if (!attrs[attr])
4449                 goto out;
4450
4451         /* The nested attribute uses enum nl80211_band as the index. This maps
4452          * directly to the enum nl80211_band values used in cfg80211.
4453          */
4454         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4455         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4456                 enum nl80211_band band = nla_type(tx_rates);
4457                 int err;
4458
4459                 if (band < 0 || band >= NUM_NL80211_BANDS)
4460                         return -EINVAL;
4461                 sband = rdev->wiphy.bands[band];
4462                 if (sband == NULL)
4463                         return -EINVAL;
4464                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4465                                                   tx_rates,
4466                                                   nl80211_txattr_policy,
4467                                                   info->extack);
4468                 if (err)
4469                         return err;
4470                 if (tb[NL80211_TXRATE_LEGACY]) {
4471                         mask->control[band].legacy = rateset_to_mask(
4472                                 sband,
4473                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4474                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4475                         if ((mask->control[band].legacy == 0) &&
4476                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4477                                 return -EINVAL;
4478                 }
4479                 if (tb[NL80211_TXRATE_HT]) {
4480                         if (!ht_rateset_to_mask(
4481                                         sband,
4482                                         nla_data(tb[NL80211_TXRATE_HT]),
4483                                         nla_len(tb[NL80211_TXRATE_HT]),
4484                                         mask->control[band].ht_mcs))
4485                                 return -EINVAL;
4486                 }
4487                 if (tb[NL80211_TXRATE_VHT]) {
4488                         if (!vht_set_mcs_mask(
4489                                         sband,
4490                                         nla_data(tb[NL80211_TXRATE_VHT]),
4491                                         mask->control[band].vht_mcs))
4492                                 return -EINVAL;
4493                 }
4494                 if (tb[NL80211_TXRATE_GI]) {
4495                         mask->control[band].gi =
4496                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4497                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4498                                 return -EINVAL;
4499                 }
4500
4501                 if (mask->control[band].legacy == 0) {
4502                         /* don't allow empty legacy rates if HT or VHT
4503                          * are not even supported.
4504                          */
4505                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4506                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4507                                 return -EINVAL;
4508
4509                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4510                                 if (mask->control[band].ht_mcs[i])
4511                                         goto out;
4512
4513                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4514                                 if (mask->control[band].vht_mcs[i])
4515                                         goto out;
4516
4517                         /* legacy and mcs rates may not be both empty */
4518                         return -EINVAL;
4519                 }
4520         }
4521
4522 out:
4523         return 0;
4524 }
4525
4526 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4527                                    enum nl80211_band band,
4528                                    struct cfg80211_bitrate_mask *beacon_rate)
4529 {
4530         u32 count_ht, count_vht, i;
4531         u32 rate = beacon_rate->control[band].legacy;
4532
4533         /* Allow only one rate */
4534         if (hweight32(rate) > 1)
4535                 return -EINVAL;
4536
4537         count_ht = 0;
4538         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4539                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4540                         return -EINVAL;
4541                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4542                         count_ht++;
4543                         if (count_ht > 1)
4544                                 return -EINVAL;
4545                 }
4546                 if (count_ht && rate)
4547                         return -EINVAL;
4548         }
4549
4550         count_vht = 0;
4551         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4552                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4553                         return -EINVAL;
4554                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4555                         count_vht++;
4556                         if (count_vht > 1)
4557                                 return -EINVAL;
4558                 }
4559                 if (count_vht && rate)
4560                         return -EINVAL;
4561         }
4562
4563         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4564                 return -EINVAL;
4565
4566         if (rate &&
4567             !wiphy_ext_feature_isset(&rdev->wiphy,
4568                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4569                 return -EINVAL;
4570         if (count_ht &&
4571             !wiphy_ext_feature_isset(&rdev->wiphy,
4572                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4573                 return -EINVAL;
4574         if (count_vht &&
4575             !wiphy_ext_feature_isset(&rdev->wiphy,
4576                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4577                 return -EINVAL;
4578
4579         return 0;
4580 }
4581
4582 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4583                                 struct nlattr *attrs[],
4584                                 struct cfg80211_beacon_data *bcn)
4585 {
4586         bool haveinfo = false;
4587         int err;
4588
4589         memset(bcn, 0, sizeof(*bcn));
4590
4591         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4592                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4593                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4594                 if (!bcn->head_len)
4595                         return -EINVAL;
4596                 haveinfo = true;
4597         }
4598
4599         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4600                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4601                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4602                 haveinfo = true;
4603         }
4604
4605         if (!haveinfo)
4606                 return -EINVAL;
4607
4608         if (attrs[NL80211_ATTR_IE]) {
4609                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4610                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4611         }
4612
4613         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4614                 bcn->proberesp_ies =
4615                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4616                 bcn->proberesp_ies_len =
4617                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4618         }
4619
4620         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4621                 bcn->assocresp_ies =
4622                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4623                 bcn->assocresp_ies_len =
4624                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4625         }
4626
4627         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4628                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4629                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4630         }
4631
4632         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4633                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4634
4635                 err = nla_parse_nested_deprecated(tb,
4636                                                   NL80211_FTM_RESP_ATTR_MAX,
4637                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4638                                                   NULL, NULL);
4639                 if (err)
4640                         return err;
4641
4642                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4643                     wiphy_ext_feature_isset(&rdev->wiphy,
4644                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4645                         bcn->ftm_responder = 1;
4646                 else
4647                         return -EOPNOTSUPP;
4648
4649                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4650                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4651                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4652                 }
4653
4654                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4655                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4656                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4657                 }
4658         } else {
4659                 bcn->ftm_responder = -1;
4660         }
4661
4662         return 0;
4663 }
4664
4665 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4666                                     struct ieee80211_he_obss_pd *he_obss_pd)
4667 {
4668         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4669         int err;
4670
4671         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4672                                he_obss_pd_policy, NULL);
4673         if (err)
4674                 return err;
4675
4676         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4677             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4678                 return -EINVAL;
4679
4680         he_obss_pd->min_offset =
4681                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4682         he_obss_pd->max_offset =
4683                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4684
4685         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4686                 return -EINVAL;
4687
4688         he_obss_pd->enable = true;
4689
4690         return 0;
4691 }
4692
4693 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4694                                       struct cfg80211_he_bss_color *he_bss_color)
4695 {
4696         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4697         int err;
4698
4699         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4700                                he_bss_color_policy, NULL);
4701         if (err)
4702                 return err;
4703
4704         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4705                 return -EINVAL;
4706
4707         he_bss_color->color =
4708                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4709         he_bss_color->disabled =
4710                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4711         he_bss_color->partial =
4712                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4713
4714         return 0;
4715 }
4716
4717 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4718                                             const u8 *rates)
4719 {
4720         int i;
4721
4722         if (!rates)
4723                 return;
4724
4725         for (i = 0; i < rates[1]; i++) {
4726                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4727                         params->ht_required = true;
4728                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4729                         params->vht_required = true;
4730                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
4731                         params->he_required = true;
4732         }
4733 }
4734
4735 /*
4736  * Since the nl80211 API didn't include, from the beginning, attributes about
4737  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4738  * benefit of drivers that rebuild IEs in the firmware.
4739  */
4740 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4741 {
4742         const struct cfg80211_beacon_data *bcn = &params->beacon;
4743         size_t ies_len = bcn->tail_len;
4744         const u8 *ies = bcn->tail;
4745         const u8 *rates;
4746         const u8 *cap;
4747
4748         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4749         nl80211_check_ap_rate_selectors(params, rates);
4750
4751         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4752         nl80211_check_ap_rate_selectors(params, rates);
4753
4754         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4755         if (cap && cap[1] >= sizeof(*params->ht_cap))
4756                 params->ht_cap = (void *)(cap + 2);
4757         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4758         if (cap && cap[1] >= sizeof(*params->vht_cap))
4759                 params->vht_cap = (void *)(cap + 2);
4760         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4761         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4762                 params->he_cap = (void *)(cap + 3);
4763         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
4764         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
4765                 params->he_oper = (void *)(cap + 3);
4766 }
4767
4768 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4769                                    struct cfg80211_ap_settings *params)
4770 {
4771         struct wireless_dev *wdev;
4772         bool ret = false;
4773
4774         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4775                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4776                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4777                         continue;
4778
4779                 if (!wdev->preset_chandef.chan)
4780                         continue;
4781
4782                 params->chandef = wdev->preset_chandef;
4783                 ret = true;
4784                 break;
4785         }
4786
4787         return ret;
4788 }
4789
4790 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4791                                     enum nl80211_auth_type auth_type,
4792                                     enum nl80211_commands cmd)
4793 {
4794         if (auth_type > NL80211_AUTHTYPE_MAX)
4795                 return false;
4796
4797         switch (cmd) {
4798         case NL80211_CMD_AUTHENTICATE:
4799                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4800                     auth_type == NL80211_AUTHTYPE_SAE)
4801                         return false;
4802                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4803                                              NL80211_EXT_FEATURE_FILS_STA) &&
4804                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4805                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4806                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4807                         return false;
4808                 return true;
4809         case NL80211_CMD_CONNECT:
4810                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4811                     !wiphy_ext_feature_isset(&rdev->wiphy,
4812                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4813                     auth_type == NL80211_AUTHTYPE_SAE)
4814                         return false;
4815
4816                 /* FILS with SK PFS or PK not supported yet */
4817                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4818                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4819                         return false;
4820                 if (!wiphy_ext_feature_isset(
4821                             &rdev->wiphy,
4822                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4823                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4824                         return false;
4825                 return true;
4826         case NL80211_CMD_START_AP:
4827                 /* SAE not supported yet */
4828                 if (auth_type == NL80211_AUTHTYPE_SAE)
4829                         return false;
4830                 /* FILS not supported yet */
4831                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4832                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4833                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4834                         return false;
4835                 return true;
4836         default:
4837                 return false;
4838         }
4839 }
4840
4841 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4842 {
4843         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4844         struct net_device *dev = info->user_ptr[1];
4845         struct wireless_dev *wdev = dev->ieee80211_ptr;
4846         struct cfg80211_ap_settings params;
4847         int err;
4848
4849         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4850             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4851                 return -EOPNOTSUPP;
4852
4853         if (!rdev->ops->start_ap)
4854                 return -EOPNOTSUPP;
4855
4856         if (wdev->beacon_interval)
4857                 return -EALREADY;
4858
4859         memset(&params, 0, sizeof(params));
4860
4861         /* these are required for START_AP */
4862         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4863             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4864             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4865                 return -EINVAL;
4866
4867         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4868         if (err)
4869                 return err;
4870
4871         params.beacon_interval =
4872                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4873         params.dtim_period =
4874                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4875
4876         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4877                                            params.beacon_interval);
4878         if (err)
4879                 return err;
4880
4881         /*
4882          * In theory, some of these attributes should be required here
4883          * but since they were not used when the command was originally
4884          * added, keep them optional for old user space programs to let
4885          * them continue to work with drivers that do not need the
4886          * additional information -- drivers must check!
4887          */
4888         if (info->attrs[NL80211_ATTR_SSID]) {
4889                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4890                 params.ssid_len =
4891                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4892                 if (params.ssid_len == 0 ||
4893                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4894                         return -EINVAL;
4895         }
4896
4897         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4898                 params.hidden_ssid = nla_get_u32(
4899                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4900
4901         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4902
4903         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4904                 params.auth_type = nla_get_u32(
4905                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4906                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4907                                              NL80211_CMD_START_AP))
4908                         return -EINVAL;
4909         } else
4910                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4911
4912         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4913                                       NL80211_MAX_NR_CIPHER_SUITES);
4914         if (err)
4915                 return err;
4916
4917         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4918                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4919                         return -EOPNOTSUPP;
4920                 params.inactivity_timeout = nla_get_u16(
4921                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4922         }
4923
4924         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4925                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4926                         return -EINVAL;
4927                 params.p2p_ctwindow =
4928                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4929                 if (params.p2p_ctwindow != 0 &&
4930                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4931                         return -EINVAL;
4932         }
4933
4934         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4935                 u8 tmp;
4936
4937                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4938                         return -EINVAL;
4939                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4940                 params.p2p_opp_ps = tmp;
4941                 if (params.p2p_opp_ps != 0 &&
4942                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4943                         return -EINVAL;
4944         }
4945
4946         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4947                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4948                 if (err)
4949                         return err;
4950         } else if (wdev->preset_chandef.chan) {
4951                 params.chandef = wdev->preset_chandef;
4952         } else if (!nl80211_get_ap_channel(rdev, &params))
4953                 return -EINVAL;
4954
4955         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4956                                            wdev->iftype))
4957                 return -EINVAL;
4958
4959         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4960                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
4961                                                     NL80211_ATTR_TX_RATES,
4962                                                     &params.beacon_rate);
4963                 if (err)
4964                         return err;
4965
4966                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4967                                               &params.beacon_rate);
4968                 if (err)
4969                         return err;
4970         }
4971
4972         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4973                 params.smps_mode =
4974                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4975                 switch (params.smps_mode) {
4976                 case NL80211_SMPS_OFF:
4977                         break;
4978                 case NL80211_SMPS_STATIC:
4979                         if (!(rdev->wiphy.features &
4980                               NL80211_FEATURE_STATIC_SMPS))
4981                                 return -EINVAL;
4982                         break;
4983                 case NL80211_SMPS_DYNAMIC:
4984                         if (!(rdev->wiphy.features &
4985                               NL80211_FEATURE_DYNAMIC_SMPS))
4986                                 return -EINVAL;
4987                         break;
4988                 default:
4989                         return -EINVAL;
4990                 }
4991         } else {
4992                 params.smps_mode = NL80211_SMPS_OFF;
4993         }
4994
4995         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4996         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4997                 return -EOPNOTSUPP;
4998
4999         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5000                 params.acl = parse_acl_data(&rdev->wiphy, info);
5001                 if (IS_ERR(params.acl))
5002                         return PTR_ERR(params.acl);
5003         }
5004
5005         params.twt_responder =
5006                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5007
5008         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5009                 err = nl80211_parse_he_obss_pd(
5010                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5011                                         &params.he_obss_pd);
5012                 goto out;
5013         }
5014
5015         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5016                 err = nl80211_parse_he_bss_color(
5017                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5018                                         &params.he_bss_color);
5019                 if (err)
5020                         return err;
5021         }
5022
5023         nl80211_calculate_ap_params(&params);
5024
5025         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5026                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5027
5028         wdev_lock(wdev);
5029         err = rdev_start_ap(rdev, dev, &params);
5030         if (!err) {
5031                 wdev->preset_chandef = params.chandef;
5032                 wdev->beacon_interval = params.beacon_interval;
5033                 wdev->chandef = params.chandef;
5034                 wdev->ssid_len = params.ssid_len;
5035                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5036
5037                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5038                         wdev->conn_owner_nlportid = info->snd_portid;
5039         }
5040         wdev_unlock(wdev);
5041
5042 out:
5043         kfree(params.acl);
5044
5045         return err;
5046 }
5047
5048 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5049 {
5050         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5051         struct net_device *dev = info->user_ptr[1];
5052         struct wireless_dev *wdev = dev->ieee80211_ptr;
5053         struct cfg80211_beacon_data params;
5054         int err;
5055
5056         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5057             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5058                 return -EOPNOTSUPP;
5059
5060         if (!rdev->ops->change_beacon)
5061                 return -EOPNOTSUPP;
5062
5063         if (!wdev->beacon_interval)
5064                 return -EINVAL;
5065
5066         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5067         if (err)
5068                 return err;
5069
5070         wdev_lock(wdev);
5071         err = rdev_change_beacon(rdev, dev, &params);
5072         wdev_unlock(wdev);
5073
5074         return err;
5075 }
5076
5077 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5078 {
5079         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5080         struct net_device *dev = info->user_ptr[1];
5081
5082         return cfg80211_stop_ap(rdev, dev, false);
5083 }
5084
5085 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5086         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5087         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5088         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5089         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5090         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5091         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5092 };
5093
5094 static int parse_station_flags(struct genl_info *info,
5095                                enum nl80211_iftype iftype,
5096                                struct station_parameters *params)
5097 {
5098         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5099         struct nlattr *nla;
5100         int flag;
5101
5102         /*
5103          * Try parsing the new attribute first so userspace
5104          * can specify both for older kernels.
5105          */
5106         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5107         if (nla) {
5108                 struct nl80211_sta_flag_update *sta_flags;
5109
5110                 sta_flags = nla_data(nla);
5111                 params->sta_flags_mask = sta_flags->mask;
5112                 params->sta_flags_set = sta_flags->set;
5113                 params->sta_flags_set &= params->sta_flags_mask;
5114                 if ((params->sta_flags_mask |
5115                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5116                         return -EINVAL;
5117                 return 0;
5118         }
5119
5120         /* if present, parse the old attribute */
5121
5122         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5123         if (!nla)
5124                 return 0;
5125
5126         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5127                 return -EINVAL;
5128
5129         /*
5130          * Only allow certain flags for interface types so that
5131          * other attributes are silently ignored. Remember that
5132          * this is backward compatibility code with old userspace
5133          * and shouldn't be hit in other cases anyway.
5134          */
5135         switch (iftype) {
5136         case NL80211_IFTYPE_AP:
5137         case NL80211_IFTYPE_AP_VLAN:
5138         case NL80211_IFTYPE_P2P_GO:
5139                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5140                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5141                                          BIT(NL80211_STA_FLAG_WME) |
5142                                          BIT(NL80211_STA_FLAG_MFP);
5143                 break;
5144         case NL80211_IFTYPE_P2P_CLIENT:
5145         case NL80211_IFTYPE_STATION:
5146                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5147                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5148                 break;
5149         case NL80211_IFTYPE_MESH_POINT:
5150                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5151                                          BIT(NL80211_STA_FLAG_MFP) |
5152                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5153                 break;
5154         default:
5155                 return -EINVAL;
5156         }
5157
5158         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5159                 if (flags[flag]) {
5160                         params->sta_flags_set |= (1<<flag);
5161
5162                         /* no longer support new API additions in old API */
5163                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5164                                 return -EINVAL;
5165                 }
5166         }
5167
5168         return 0;
5169 }
5170
5171 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5172 {
5173         struct nlattr *rate;
5174         u32 bitrate;
5175         u16 bitrate_compat;
5176         enum nl80211_rate_info rate_flg;
5177
5178         rate = nla_nest_start_noflag(msg, attr);
5179         if (!rate)
5180                 return false;
5181
5182         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5183         bitrate = cfg80211_calculate_bitrate(info);
5184         /* report 16-bit bitrate only if we can */
5185         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5186         if (bitrate > 0 &&
5187             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5188                 return false;
5189         if (bitrate_compat > 0 &&
5190             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5191                 return false;
5192
5193         switch (info->bw) {
5194         case RATE_INFO_BW_5:
5195                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5196                 break;
5197         case RATE_INFO_BW_10:
5198                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5199                 break;
5200         default:
5201                 WARN_ON(1);
5202                 /* fall through */
5203         case RATE_INFO_BW_20:
5204                 rate_flg = 0;
5205                 break;
5206         case RATE_INFO_BW_40:
5207                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5208                 break;
5209         case RATE_INFO_BW_80:
5210                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5211                 break;
5212         case RATE_INFO_BW_160:
5213                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5214                 break;
5215         case RATE_INFO_BW_HE_RU:
5216                 rate_flg = 0;
5217                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5218         }
5219
5220         if (rate_flg && nla_put_flag(msg, rate_flg))
5221                 return false;
5222
5223         if (info->flags & RATE_INFO_FLAGS_MCS) {
5224                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5225                         return false;
5226                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5227                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5228                         return false;
5229         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5230                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5231                         return false;
5232                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5233                         return false;
5234                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5235                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5236                         return false;
5237         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5238                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5239                         return false;
5240                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5241                         return false;
5242                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5243                         return false;
5244                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5245                         return false;
5246                 if (info->bw == RATE_INFO_BW_HE_RU &&
5247                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5248                                info->he_ru_alloc))
5249                         return false;
5250         }
5251
5252         nla_nest_end(msg, rate);
5253         return true;
5254 }
5255
5256 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5257                                int id)
5258 {
5259         void *attr;
5260         int i = 0;
5261
5262         if (!mask)
5263                 return true;
5264
5265         attr = nla_nest_start_noflag(msg, id);
5266         if (!attr)
5267                 return false;
5268
5269         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5270                 if (!(mask & BIT(i)))
5271                         continue;
5272
5273                 if (nla_put_u8(msg, i, signal[i]))
5274                         return false;
5275         }
5276
5277         nla_nest_end(msg, attr);
5278
5279         return true;
5280 }
5281
5282 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5283                                 u32 seq, int flags,
5284                                 struct cfg80211_registered_device *rdev,
5285                                 struct net_device *dev,
5286                                 const u8 *mac_addr, struct station_info *sinfo)
5287 {
5288         void *hdr;
5289         struct nlattr *sinfoattr, *bss_param;
5290
5291         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5292         if (!hdr) {
5293                 cfg80211_sinfo_release_content(sinfo);
5294                 return -1;
5295         }
5296
5297         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5298             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5299             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5300                 goto nla_put_failure;
5301
5302         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5303         if (!sinfoattr)
5304                 goto nla_put_failure;
5305
5306 #define PUT_SINFO(attr, memb, type) do {                                \
5307         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5308         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5309             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5310                              sinfo->memb))                              \
5311                 goto nla_put_failure;                                   \
5312         } while (0)
5313 #define PUT_SINFO_U64(attr, memb) do {                                  \
5314         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5315             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5316                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5317                 goto nla_put_failure;                                   \
5318         } while (0)
5319
5320         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5321         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5322         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5323
5324         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5325                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5326             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5327                         (u32)sinfo->rx_bytes))
5328                 goto nla_put_failure;
5329
5330         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5331                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5332             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5333                         (u32)sinfo->tx_bytes))
5334                 goto nla_put_failure;
5335
5336         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5337         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5338         PUT_SINFO(LLID, llid, u16);
5339         PUT_SINFO(PLID, plid, u16);
5340         PUT_SINFO(PLINK_STATE, plink_state, u8);
5341         PUT_SINFO_U64(RX_DURATION, rx_duration);
5342         PUT_SINFO_U64(TX_DURATION, tx_duration);
5343
5344         if (wiphy_ext_feature_isset(&rdev->wiphy,
5345                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5346                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5347
5348         switch (rdev->wiphy.signal_type) {
5349         case CFG80211_SIGNAL_TYPE_MBM:
5350                 PUT_SINFO(SIGNAL, signal, u8);
5351                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5352                 break;
5353         default:
5354                 break;
5355         }
5356         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5357                 if (!nl80211_put_signal(msg, sinfo->chains,
5358                                         sinfo->chain_signal,
5359                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5360                         goto nla_put_failure;
5361         }
5362         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5363                 if (!nl80211_put_signal(msg, sinfo->chains,
5364                                         sinfo->chain_signal_avg,
5365                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5366                         goto nla_put_failure;
5367         }
5368         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5369                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5370                                           NL80211_STA_INFO_TX_BITRATE))
5371                         goto nla_put_failure;
5372         }
5373         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5374                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5375                                           NL80211_STA_INFO_RX_BITRATE))
5376                         goto nla_put_failure;
5377         }
5378
5379         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5380         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5381         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5382         PUT_SINFO(TX_FAILED, tx_failed, u32);
5383         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5384         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5385         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5386         PUT_SINFO(LOCAL_PM, local_pm, u32);
5387         PUT_SINFO(PEER_PM, peer_pm, u32);
5388         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5389         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5390
5391         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5392                 bss_param = nla_nest_start_noflag(msg,
5393                                                   NL80211_STA_INFO_BSS_PARAM);
5394                 if (!bss_param)
5395                         goto nla_put_failure;
5396
5397                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5398                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5399                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5400                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5401                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5402                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5403                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5404                                sinfo->bss_param.dtim_period) ||
5405                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5406                                 sinfo->bss_param.beacon_interval))
5407                         goto nla_put_failure;
5408
5409                 nla_nest_end(msg, bss_param);
5410         }
5411         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5412             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5413                     sizeof(struct nl80211_sta_flag_update),
5414                     &sinfo->sta_flags))
5415                 goto nla_put_failure;
5416
5417         PUT_SINFO_U64(T_OFFSET, t_offset);
5418         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5419         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5420         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5421         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5422         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5423         if (wiphy_ext_feature_isset(&rdev->wiphy,
5424                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5425                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5426                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5427         }
5428
5429 #undef PUT_SINFO
5430 #undef PUT_SINFO_U64
5431
5432         if (sinfo->pertid) {
5433                 struct nlattr *tidsattr;
5434                 int tid;
5435
5436                 tidsattr = nla_nest_start_noflag(msg,
5437                                                  NL80211_STA_INFO_TID_STATS);
5438                 if (!tidsattr)
5439                         goto nla_put_failure;
5440
5441                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5442                         struct cfg80211_tid_stats *tidstats;
5443                         struct nlattr *tidattr;
5444
5445                         tidstats = &sinfo->pertid[tid];
5446
5447                         if (!tidstats->filled)
5448                                 continue;
5449
5450                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5451                         if (!tidattr)
5452                                 goto nla_put_failure;
5453
5454 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5455         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5456             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5457                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5458                 goto nla_put_failure;                                   \
5459         } while (0)
5460
5461                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5462                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5463                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5464                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5465
5466 #undef PUT_TIDVAL_U64
5467                         if ((tidstats->filled &
5468                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5469                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5470                                                    NL80211_TID_STATS_TXQ_STATS))
5471                                 goto nla_put_failure;
5472
5473                         nla_nest_end(msg, tidattr);
5474                 }
5475
5476                 nla_nest_end(msg, tidsattr);
5477         }
5478
5479         nla_nest_end(msg, sinfoattr);
5480
5481         if (sinfo->assoc_req_ies_len &&
5482             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5483                     sinfo->assoc_req_ies))
5484                 goto nla_put_failure;
5485
5486         cfg80211_sinfo_release_content(sinfo);
5487         genlmsg_end(msg, hdr);
5488         return 0;
5489
5490  nla_put_failure:
5491         cfg80211_sinfo_release_content(sinfo);
5492         genlmsg_cancel(msg, hdr);
5493         return -EMSGSIZE;
5494 }
5495
5496 static int nl80211_dump_station(struct sk_buff *skb,
5497                                 struct netlink_callback *cb)
5498 {
5499         struct station_info sinfo;
5500         struct cfg80211_registered_device *rdev;
5501         struct wireless_dev *wdev;
5502         u8 mac_addr[ETH_ALEN];
5503         int sta_idx = cb->args[2];
5504         int err;
5505
5506         rtnl_lock();
5507         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5508         if (err)
5509                 goto out_err;
5510
5511         if (!wdev->netdev) {
5512                 err = -EINVAL;
5513                 goto out_err;
5514         }
5515
5516         if (!rdev->ops->dump_station) {
5517                 err = -EOPNOTSUPP;
5518                 goto out_err;
5519         }
5520
5521         while (1) {
5522                 memset(&sinfo, 0, sizeof(sinfo));
5523                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5524                                         mac_addr, &sinfo);
5525                 if (err == -ENOENT)
5526                         break;
5527                 if (err)
5528                         goto out_err;
5529
5530                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5531                                 NETLINK_CB(cb->skb).portid,
5532                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5533                                 rdev, wdev->netdev, mac_addr,
5534                                 &sinfo) < 0)
5535                         goto out;
5536
5537                 sta_idx++;
5538         }
5539
5540  out:
5541         cb->args[2] = sta_idx;
5542         err = skb->len;
5543  out_err:
5544         rtnl_unlock();
5545
5546         return err;
5547 }
5548
5549 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5550 {
5551         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5552         struct net_device *dev = info->user_ptr[1];
5553         struct station_info sinfo;
5554         struct sk_buff *msg;
5555         u8 *mac_addr = NULL;
5556         int err;
5557
5558         memset(&sinfo, 0, sizeof(sinfo));
5559
5560         if (!info->attrs[NL80211_ATTR_MAC])
5561                 return -EINVAL;
5562
5563         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5564
5565         if (!rdev->ops->get_station)
5566                 return -EOPNOTSUPP;
5567
5568         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5569         if (err)
5570                 return err;
5571
5572         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5573         if (!msg) {
5574                 cfg80211_sinfo_release_content(&sinfo);
5575                 return -ENOMEM;
5576         }
5577
5578         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5579                                  info->snd_portid, info->snd_seq, 0,
5580                                  rdev, dev, mac_addr, &sinfo) < 0) {
5581                 nlmsg_free(msg);
5582                 return -ENOBUFS;
5583         }
5584
5585         return genlmsg_reply(msg, info);
5586 }
5587
5588 int cfg80211_check_station_change(struct wiphy *wiphy,
5589                                   struct station_parameters *params,
5590                                   enum cfg80211_station_type statype)
5591 {
5592         if (params->listen_interval != -1 &&
5593             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5594                 return -EINVAL;
5595
5596         if (params->support_p2p_ps != -1 &&
5597             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5598                 return -EINVAL;
5599
5600         if (params->aid &&
5601             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5602             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5603                 return -EINVAL;
5604
5605         /* When you run into this, adjust the code below for the new flag */
5606         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5607
5608         switch (statype) {
5609         case CFG80211_STA_MESH_PEER_KERNEL:
5610         case CFG80211_STA_MESH_PEER_USER:
5611                 /*
5612                  * No ignoring the TDLS flag here -- the userspace mesh
5613                  * code doesn't have the bug of including TDLS in the
5614                  * mask everywhere.
5615                  */
5616                 if (params->sta_flags_mask &
5617                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5618                                   BIT(NL80211_STA_FLAG_MFP) |
5619                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5620                         return -EINVAL;
5621                 break;
5622         case CFG80211_STA_TDLS_PEER_SETUP:
5623         case CFG80211_STA_TDLS_PEER_ACTIVE:
5624                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5625                         return -EINVAL;
5626                 /* ignore since it can't change */
5627                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5628                 break;
5629         default:
5630                 /* disallow mesh-specific things */
5631                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5632                         return -EINVAL;
5633                 if (params->local_pm)
5634                         return -EINVAL;
5635                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5636                         return -EINVAL;
5637         }
5638
5639         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5640             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5641                 /* TDLS can't be set, ... */
5642                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5643                         return -EINVAL;
5644                 /*
5645                  * ... but don't bother the driver with it. This works around
5646                  * a hostapd/wpa_supplicant issue -- it always includes the
5647                  * TLDS_PEER flag in the mask even for AP mode.
5648                  */
5649                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5650         }
5651
5652         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5653             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5654                 /* reject other things that can't change */
5655                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5656                         return -EINVAL;
5657                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5658                         return -EINVAL;
5659                 if (params->supported_rates)
5660                         return -EINVAL;
5661                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5662                     params->he_capa)
5663                         return -EINVAL;
5664         }
5665
5666         if (statype != CFG80211_STA_AP_CLIENT &&
5667             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5668                 if (params->vlan)
5669                         return -EINVAL;
5670         }
5671
5672         switch (statype) {
5673         case CFG80211_STA_AP_MLME_CLIENT:
5674                 /* Use this only for authorizing/unauthorizing a station */
5675                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5676                         return -EOPNOTSUPP;
5677                 break;
5678         case CFG80211_STA_AP_CLIENT:
5679         case CFG80211_STA_AP_CLIENT_UNASSOC:
5680                 /* accept only the listed bits */
5681                 if (params->sta_flags_mask &
5682                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5683                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5684                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5685                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5686                                   BIT(NL80211_STA_FLAG_WME) |
5687                                   BIT(NL80211_STA_FLAG_MFP)))
5688                         return -EINVAL;
5689
5690                 /* but authenticated/associated only if driver handles it */
5691                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5692                     params->sta_flags_mask &
5693                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5694                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5695                         return -EINVAL;
5696                 break;
5697         case CFG80211_STA_IBSS:
5698         case CFG80211_STA_AP_STA:
5699                 /* reject any changes other than AUTHORIZED */
5700                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5701                         return -EINVAL;
5702                 break;
5703         case CFG80211_STA_TDLS_PEER_SETUP:
5704                 /* reject any changes other than AUTHORIZED or WME */
5705                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5706                                                BIT(NL80211_STA_FLAG_WME)))
5707                         return -EINVAL;
5708                 /* force (at least) rates when authorizing */
5709                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5710                     !params->supported_rates)
5711                         return -EINVAL;
5712                 break;
5713         case CFG80211_STA_TDLS_PEER_ACTIVE:
5714                 /* reject any changes */
5715                 return -EINVAL;
5716         case CFG80211_STA_MESH_PEER_KERNEL:
5717                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5718                         return -EINVAL;
5719                 break;
5720         case CFG80211_STA_MESH_PEER_USER:
5721                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5722                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5723                         return -EINVAL;
5724                 break;
5725         }
5726
5727         /*
5728          * Older kernel versions ignored this attribute entirely, so don't
5729          * reject attempts to update it but mark it as unused instead so the
5730          * driver won't look at the data.
5731          */
5732         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5733             statype != CFG80211_STA_TDLS_PEER_SETUP)
5734                 params->opmode_notif_used = false;
5735
5736         return 0;
5737 }
5738 EXPORT_SYMBOL(cfg80211_check_station_change);
5739
5740 /*
5741  * Get vlan interface making sure it is running and on the right wiphy.
5742  */
5743 static struct net_device *get_vlan(struct genl_info *info,
5744                                    struct cfg80211_registered_device *rdev)
5745 {
5746         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5747         struct net_device *v;
5748         int ret;
5749
5750         if (!vlanattr)
5751                 return NULL;
5752
5753         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5754         if (!v)
5755                 return ERR_PTR(-ENODEV);
5756
5757         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5758                 ret = -EINVAL;
5759                 goto error;
5760         }
5761
5762         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5763             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5764             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5765                 ret = -EINVAL;
5766                 goto error;
5767         }
5768
5769         if (!netif_running(v)) {
5770                 ret = -ENETDOWN;
5771                 goto error;
5772         }
5773
5774         return v;
5775  error:
5776         dev_put(v);
5777         return ERR_PTR(ret);
5778 }
5779
5780 static const struct nla_policy
5781 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5782         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5783         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5784 };
5785
5786 static int nl80211_parse_sta_wme(struct genl_info *info,
5787                                  struct station_parameters *params)
5788 {
5789         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5790         struct nlattr *nla;
5791         int err;
5792
5793         /* parse WME attributes if present */
5794         if (!info->attrs[NL80211_ATTR_STA_WME])
5795                 return 0;
5796
5797         nla = info->attrs[NL80211_ATTR_STA_WME];
5798         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5799                                           nl80211_sta_wme_policy,
5800                                           info->extack);
5801         if (err)
5802                 return err;
5803
5804         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5805                 params->uapsd_queues = nla_get_u8(
5806                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5807         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5808                 return -EINVAL;
5809
5810         if (tb[NL80211_STA_WME_MAX_SP])
5811                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5812
5813         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5814                 return -EINVAL;
5815
5816         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5817
5818         return 0;
5819 }
5820
5821 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5822                                       struct station_parameters *params)
5823 {
5824         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5825                 params->supported_channels =
5826                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5827                 params->supported_channels_len =
5828                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5829                 /*
5830                  * Need to include at least one (first channel, number of
5831                  * channels) tuple for each subband, and must have proper
5832                  * tuples for the rest of the data as well.
5833                  */
5834                 if (params->supported_channels_len < 2)
5835                         return -EINVAL;
5836                 if (params->supported_channels_len % 2)
5837                         return -EINVAL;
5838         }
5839
5840         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5841                 params->supported_oper_classes =
5842                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5843                 params->supported_oper_classes_len =
5844                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5845                 /*
5846                  * The value of the Length field of the Supported Operating
5847                  * Classes element is between 2 and 253.
5848                  */
5849                 if (params->supported_oper_classes_len < 2 ||
5850                     params->supported_oper_classes_len > 253)
5851                         return -EINVAL;
5852         }
5853         return 0;
5854 }
5855
5856 static int nl80211_set_station_tdls(struct genl_info *info,
5857                                     struct station_parameters *params)
5858 {
5859         int err;
5860         /* Dummy STA entry gets updated once the peer capabilities are known */
5861         if (info->attrs[NL80211_ATTR_PEER_AID])
5862                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5863         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5864                 params->ht_capa =
5865                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5866         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5867                 params->vht_capa =
5868                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5869         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5870                 params->he_capa =
5871                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5872                 params->he_capa_len =
5873                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5874
5875                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5876                         return -EINVAL;
5877         }
5878
5879         err = nl80211_parse_sta_channel_info(info, params);
5880         if (err)
5881                 return err;
5882
5883         return nl80211_parse_sta_wme(info, params);
5884 }
5885
5886 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5887                                              struct station_parameters *params)
5888 {
5889         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5890         int idx;
5891
5892         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5893                 if (!rdev->ops->set_tx_power ||
5894                     !wiphy_ext_feature_isset(&rdev->wiphy,
5895                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5896                         return -EOPNOTSUPP;
5897
5898                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5899                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5900
5901                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5902                         idx = NL80211_ATTR_STA_TX_POWER;
5903
5904                         if (info->attrs[idx])
5905                                 params->txpwr.power =
5906                                         nla_get_s16(info->attrs[idx]);
5907                         else
5908                                 return -EINVAL;
5909                 }
5910                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5911         }
5912
5913         return 0;
5914 }
5915
5916 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5917 {
5918         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5919         struct net_device *dev = info->user_ptr[1];
5920         struct station_parameters params;
5921         u8 *mac_addr;
5922         int err;
5923
5924         memset(&params, 0, sizeof(params));
5925
5926         if (!rdev->ops->change_station)
5927                 return -EOPNOTSUPP;
5928
5929         /*
5930          * AID and listen_interval properties can be set only for unassociated
5931          * station. Include these parameters here and will check them in
5932          * cfg80211_check_station_change().
5933          */
5934         if (info->attrs[NL80211_ATTR_STA_AID])
5935                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5936
5937         if (info->attrs[NL80211_ATTR_VLAN_ID])
5938                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5939
5940         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5941                 params.listen_interval =
5942                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5943         else
5944                 params.listen_interval = -1;
5945
5946         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5947                 params.support_p2p_ps =
5948                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5949         else
5950                 params.support_p2p_ps = -1;
5951
5952         if (!info->attrs[NL80211_ATTR_MAC])
5953                 return -EINVAL;
5954
5955         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5956
5957         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5958                 params.supported_rates =
5959                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5960                 params.supported_rates_len =
5961                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5962         }
5963
5964         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5965                 params.capability =
5966                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5967                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5968         }
5969
5970         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5971                 params.ext_capab =
5972                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5973                 params.ext_capab_len =
5974                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5975         }
5976
5977         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5978                 return -EINVAL;
5979
5980         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5981                 params.plink_action =
5982                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5983
5984         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5985                 params.plink_state =
5986                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5987                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5988                         params.peer_aid = nla_get_u16(
5989                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5990                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5991         }
5992
5993         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5994                 params.local_pm = nla_get_u32(
5995                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5996
5997         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5998                 params.opmode_notif_used = true;
5999                 params.opmode_notif =
6000                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6001         }
6002
6003         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6004                 params.he_6ghz_capa =
6005                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6006
6007         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6008                 params.airtime_weight =
6009                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6010
6011         if (params.airtime_weight &&
6012             !wiphy_ext_feature_isset(&rdev->wiphy,
6013                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6014                 return -EOPNOTSUPP;
6015
6016         err = nl80211_parse_sta_txpower_setting(info, &params);
6017         if (err)
6018                 return err;
6019
6020         /* Include parameters for TDLS peer (will check later) */
6021         err = nl80211_set_station_tdls(info, &params);
6022         if (err)
6023                 return err;
6024
6025         params.vlan = get_vlan(info, rdev);
6026         if (IS_ERR(params.vlan))
6027                 return PTR_ERR(params.vlan);
6028
6029         switch (dev->ieee80211_ptr->iftype) {
6030         case NL80211_IFTYPE_AP:
6031         case NL80211_IFTYPE_AP_VLAN:
6032         case NL80211_IFTYPE_P2P_GO:
6033         case NL80211_IFTYPE_P2P_CLIENT:
6034         case NL80211_IFTYPE_STATION:
6035         case NL80211_IFTYPE_ADHOC:
6036         case NL80211_IFTYPE_MESH_POINT:
6037                 break;
6038         default:
6039                 err = -EOPNOTSUPP;
6040                 goto out_put_vlan;
6041         }
6042
6043         /* driver will call cfg80211_check_station_change() */
6044         err = rdev_change_station(rdev, dev, mac_addr, &params);
6045
6046  out_put_vlan:
6047         if (params.vlan)
6048                 dev_put(params.vlan);
6049
6050         return err;
6051 }
6052
6053 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6054 {
6055         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6056         int err;
6057         struct net_device *dev = info->user_ptr[1];
6058         struct station_parameters params;
6059         u8 *mac_addr = NULL;
6060         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6061                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6062
6063         memset(&params, 0, sizeof(params));
6064
6065         if (!rdev->ops->add_station)
6066                 return -EOPNOTSUPP;
6067
6068         if (!info->attrs[NL80211_ATTR_MAC])
6069                 return -EINVAL;
6070
6071         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6072                 return -EINVAL;
6073
6074         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6075                 return -EINVAL;
6076
6077         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6078             !info->attrs[NL80211_ATTR_PEER_AID])
6079                 return -EINVAL;
6080
6081         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6082         params.supported_rates =
6083                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6084         params.supported_rates_len =
6085                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6086         params.listen_interval =
6087                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6088
6089         if (info->attrs[NL80211_ATTR_VLAN_ID])
6090                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6091
6092         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6093                 params.support_p2p_ps =
6094                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6095         } else {
6096                 /*
6097                  * if not specified, assume it's supported for P2P GO interface,
6098                  * and is NOT supported for AP interface
6099                  */
6100                 params.support_p2p_ps =
6101                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6102         }
6103
6104         if (info->attrs[NL80211_ATTR_PEER_AID])
6105                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6106         else
6107                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6108
6109         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6110                 params.capability =
6111                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6112                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6113         }
6114
6115         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6116                 params.ext_capab =
6117                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6118                 params.ext_capab_len =
6119                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6120         }
6121
6122         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6123                 params.ht_capa =
6124                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6125
6126         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6127                 params.vht_capa =
6128                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6129
6130         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6131                 params.he_capa =
6132                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6133                 params.he_capa_len =
6134                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6135
6136                 /* max len is validated in nla policy */
6137                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
6138                         return -EINVAL;
6139         }
6140
6141         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6142                 params.he_6ghz_capa =
6143                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6144
6145         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6146                 params.opmode_notif_used = true;
6147                 params.opmode_notif =
6148                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6149         }
6150
6151         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6152                 params.plink_action =
6153                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6154
6155         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6156                 params.airtime_weight =
6157                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6158
6159         if (params.airtime_weight &&
6160             !wiphy_ext_feature_isset(&rdev->wiphy,
6161                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6162                 return -EOPNOTSUPP;
6163
6164         err = nl80211_parse_sta_txpower_setting(info, &params);
6165         if (err)
6166                 return err;
6167
6168         err = nl80211_parse_sta_channel_info(info, &params);
6169         if (err)
6170                 return err;
6171
6172         err = nl80211_parse_sta_wme(info, &params);
6173         if (err)
6174                 return err;
6175
6176         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6177                 return -EINVAL;
6178
6179         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6180          * as userspace might just pass through the capabilities from the IEs
6181          * directly, rather than enforcing this restriction and returning an
6182          * error in this case.
6183          */
6184         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6185                 params.ht_capa = NULL;
6186                 params.vht_capa = NULL;
6187
6188                 /* HE requires WME */
6189                 if (params.he_capa_len || params.he_6ghz_capa)
6190                         return -EINVAL;
6191         }
6192
6193         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6194         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6195                 return -EINVAL;
6196
6197         /* When you run into this, adjust the code below for the new flag */
6198         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6199
6200         switch (dev->ieee80211_ptr->iftype) {
6201         case NL80211_IFTYPE_AP:
6202         case NL80211_IFTYPE_AP_VLAN:
6203         case NL80211_IFTYPE_P2P_GO:
6204                 /* ignore WME attributes if iface/sta is not capable */
6205                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6206                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6207                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6208
6209                 /* TDLS peers cannot be added */
6210                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6211                     info->attrs[NL80211_ATTR_PEER_AID])
6212                         return -EINVAL;
6213                 /* but don't bother the driver with it */
6214                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6215
6216                 /* allow authenticated/associated only if driver handles it */
6217                 if (!(rdev->wiphy.features &
6218                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6219                     params.sta_flags_mask & auth_assoc)
6220                         return -EINVAL;
6221
6222                 /* Older userspace, or userspace wanting to be compatible with
6223                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6224                  * and assoc flags in the mask, but assumes the station will be
6225                  * added as associated anyway since this was the required driver
6226                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6227                  * introduced.
6228                  * In order to not bother drivers with this quirk in the API
6229                  * set the flags in both the mask and set for new stations in
6230                  * this case.
6231                  */
6232                 if (!(params.sta_flags_mask & auth_assoc)) {
6233                         params.sta_flags_mask |= auth_assoc;
6234                         params.sta_flags_set |= auth_assoc;
6235                 }
6236
6237                 /* must be last in here for error handling */
6238                 params.vlan = get_vlan(info, rdev);
6239                 if (IS_ERR(params.vlan))
6240                         return PTR_ERR(params.vlan);
6241                 break;
6242         case NL80211_IFTYPE_MESH_POINT:
6243                 /* ignore uAPSD data */
6244                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6245
6246                 /* associated is disallowed */
6247                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6248                         return -EINVAL;
6249                 /* TDLS peers cannot be added */
6250                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6251                     info->attrs[NL80211_ATTR_PEER_AID])
6252                         return -EINVAL;
6253                 break;
6254         case NL80211_IFTYPE_STATION:
6255         case NL80211_IFTYPE_P2P_CLIENT:
6256                 /* ignore uAPSD data */
6257                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6258
6259                 /* these are disallowed */
6260                 if (params.sta_flags_mask &
6261                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6262                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6263                         return -EINVAL;
6264                 /* Only TDLS peers can be added */
6265                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6266                         return -EINVAL;
6267                 /* Can only add if TDLS ... */
6268                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6269                         return -EOPNOTSUPP;
6270                 /* ... with external setup is supported */
6271                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6272                         return -EOPNOTSUPP;
6273                 /*
6274                  * Older wpa_supplicant versions always mark the TDLS peer
6275                  * as authorized, but it shouldn't yet be.
6276                  */
6277                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6278                 break;
6279         default:
6280                 return -EOPNOTSUPP;
6281         }
6282
6283         /* be aware of params.vlan when changing code here */
6284
6285         err = rdev_add_station(rdev, dev, mac_addr, &params);
6286
6287         if (params.vlan)
6288                 dev_put(params.vlan);
6289         return err;
6290 }
6291
6292 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6293 {
6294         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6295         struct net_device *dev = info->user_ptr[1];
6296         struct station_del_parameters params;
6297
6298         memset(&params, 0, sizeof(params));
6299
6300         if (info->attrs[NL80211_ATTR_MAC])
6301                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6302
6303         switch (dev->ieee80211_ptr->iftype) {
6304         case NL80211_IFTYPE_AP:
6305         case NL80211_IFTYPE_AP_VLAN:
6306         case NL80211_IFTYPE_MESH_POINT:
6307         case NL80211_IFTYPE_P2P_GO:
6308                 /* always accept these */
6309                 break;
6310         case NL80211_IFTYPE_ADHOC:
6311                 /* conditionally accept */
6312                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6313                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6314                         break;
6315                 return -EINVAL;
6316         default:
6317                 return -EINVAL;
6318         }
6319
6320         if (!rdev->ops->del_station)
6321                 return -EOPNOTSUPP;
6322
6323         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6324                 params.subtype =
6325                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6326                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6327                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6328                         return -EINVAL;
6329         } else {
6330                 /* Default to Deauthentication frame */
6331                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6332         }
6333
6334         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6335                 params.reason_code =
6336                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6337                 if (params.reason_code == 0)
6338                         return -EINVAL; /* 0 is reserved */
6339         } else {
6340                 /* Default to reason code 2 */
6341                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6342         }
6343
6344         return rdev_del_station(rdev, dev, &params);
6345 }
6346
6347 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6348                                 int flags, struct net_device *dev,
6349                                 u8 *dst, u8 *next_hop,
6350                                 struct mpath_info *pinfo)
6351 {
6352         void *hdr;
6353         struct nlattr *pinfoattr;
6354
6355         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6356         if (!hdr)
6357                 return -1;
6358
6359         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6360             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6361             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6362             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6363                 goto nla_put_failure;
6364
6365         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6366         if (!pinfoattr)
6367                 goto nla_put_failure;
6368         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6369             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6370                         pinfo->frame_qlen))
6371                 goto nla_put_failure;
6372         if (((pinfo->filled & MPATH_INFO_SN) &&
6373              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6374             ((pinfo->filled & MPATH_INFO_METRIC) &&
6375              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6376                          pinfo->metric)) ||
6377             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6378              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6379                          pinfo->exptime)) ||
6380             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6381              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6382                         pinfo->flags)) ||
6383             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6384              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6385                          pinfo->discovery_timeout)) ||
6386             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6387              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6388                         pinfo->discovery_retries)) ||
6389             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6390              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6391                         pinfo->hop_count)) ||
6392             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6393              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6394                          pinfo->path_change_count)))
6395                 goto nla_put_failure;
6396
6397         nla_nest_end(msg, pinfoattr);
6398
6399         genlmsg_end(msg, hdr);
6400         return 0;
6401
6402  nla_put_failure:
6403         genlmsg_cancel(msg, hdr);
6404         return -EMSGSIZE;
6405 }
6406
6407 static int nl80211_dump_mpath(struct sk_buff *skb,
6408                               struct netlink_callback *cb)
6409 {
6410         struct mpath_info pinfo;
6411         struct cfg80211_registered_device *rdev;
6412         struct wireless_dev *wdev;
6413         u8 dst[ETH_ALEN];
6414         u8 next_hop[ETH_ALEN];
6415         int path_idx = cb->args[2];
6416         int err;
6417
6418         rtnl_lock();
6419         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6420         if (err)
6421                 goto out_err;
6422
6423         if (!rdev->ops->dump_mpath) {
6424                 err = -EOPNOTSUPP;
6425                 goto out_err;
6426         }
6427
6428         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6429                 err = -EOPNOTSUPP;
6430                 goto out_err;
6431         }
6432
6433         while (1) {
6434                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6435                                       next_hop, &pinfo);
6436                 if (err == -ENOENT)
6437                         break;
6438                 if (err)
6439                         goto out_err;
6440
6441                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6442                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6443                                        wdev->netdev, dst, next_hop,
6444                                        &pinfo) < 0)
6445                         goto out;
6446
6447                 path_idx++;
6448         }
6449
6450  out:
6451         cb->args[2] = path_idx;
6452         err = skb->len;
6453  out_err:
6454         rtnl_unlock();
6455         return err;
6456 }
6457
6458 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6459 {
6460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6461         int err;
6462         struct net_device *dev = info->user_ptr[1];
6463         struct mpath_info pinfo;
6464         struct sk_buff *msg;
6465         u8 *dst = NULL;
6466         u8 next_hop[ETH_ALEN];
6467
6468         memset(&pinfo, 0, sizeof(pinfo));
6469
6470         if (!info->attrs[NL80211_ATTR_MAC])
6471                 return -EINVAL;
6472
6473         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6474
6475         if (!rdev->ops->get_mpath)
6476                 return -EOPNOTSUPP;
6477
6478         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6479                 return -EOPNOTSUPP;
6480
6481         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6482         if (err)
6483                 return err;
6484
6485         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6486         if (!msg)
6487                 return -ENOMEM;
6488
6489         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6490                                  dev, dst, next_hop, &pinfo) < 0) {
6491                 nlmsg_free(msg);
6492                 return -ENOBUFS;
6493         }
6494
6495         return genlmsg_reply(msg, info);
6496 }
6497
6498 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6499 {
6500         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6501         struct net_device *dev = info->user_ptr[1];
6502         u8 *dst = NULL;
6503         u8 *next_hop = NULL;
6504
6505         if (!info->attrs[NL80211_ATTR_MAC])
6506                 return -EINVAL;
6507
6508         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6509                 return -EINVAL;
6510
6511         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6512         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6513
6514         if (!rdev->ops->change_mpath)
6515                 return -EOPNOTSUPP;
6516
6517         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6518                 return -EOPNOTSUPP;
6519
6520         return rdev_change_mpath(rdev, dev, dst, next_hop);
6521 }
6522
6523 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6524 {
6525         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6526         struct net_device *dev = info->user_ptr[1];
6527         u8 *dst = NULL;
6528         u8 *next_hop = NULL;
6529
6530         if (!info->attrs[NL80211_ATTR_MAC])
6531                 return -EINVAL;
6532
6533         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6534                 return -EINVAL;
6535
6536         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6537         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6538
6539         if (!rdev->ops->add_mpath)
6540                 return -EOPNOTSUPP;
6541
6542         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6543                 return -EOPNOTSUPP;
6544
6545         return rdev_add_mpath(rdev, dev, dst, next_hop);
6546 }
6547
6548 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6549 {
6550         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6551         struct net_device *dev = info->user_ptr[1];
6552         u8 *dst = NULL;
6553
6554         if (info->attrs[NL80211_ATTR_MAC])
6555                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6556
6557         if (!rdev->ops->del_mpath)
6558                 return -EOPNOTSUPP;
6559
6560         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6561                 return -EOPNOTSUPP;
6562
6563         return rdev_del_mpath(rdev, dev, dst);
6564 }
6565
6566 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6567 {
6568         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6569         int err;
6570         struct net_device *dev = info->user_ptr[1];
6571         struct mpath_info pinfo;
6572         struct sk_buff *msg;
6573         u8 *dst = NULL;
6574         u8 mpp[ETH_ALEN];
6575
6576         memset(&pinfo, 0, sizeof(pinfo));
6577
6578         if (!info->attrs[NL80211_ATTR_MAC])
6579                 return -EINVAL;
6580
6581         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6582
6583         if (!rdev->ops->get_mpp)
6584                 return -EOPNOTSUPP;
6585
6586         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6587                 return -EOPNOTSUPP;
6588
6589         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6590         if (err)
6591                 return err;
6592
6593         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6594         if (!msg)
6595                 return -ENOMEM;
6596
6597         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6598                                dev, dst, mpp, &pinfo) < 0) {
6599                 nlmsg_free(msg);
6600                 return -ENOBUFS;
6601         }
6602
6603         return genlmsg_reply(msg, info);
6604 }
6605
6606 static int nl80211_dump_mpp(struct sk_buff *skb,
6607                             struct netlink_callback *cb)
6608 {
6609         struct mpath_info pinfo;
6610         struct cfg80211_registered_device *rdev;
6611         struct wireless_dev *wdev;
6612         u8 dst[ETH_ALEN];
6613         u8 mpp[ETH_ALEN];
6614         int path_idx = cb->args[2];
6615         int err;
6616
6617         rtnl_lock();
6618         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6619         if (err)
6620                 goto out_err;
6621
6622         if (!rdev->ops->dump_mpp) {
6623                 err = -EOPNOTSUPP;
6624                 goto out_err;
6625         }
6626
6627         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6628                 err = -EOPNOTSUPP;
6629                 goto out_err;
6630         }
6631
6632         while (1) {
6633                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6634                                     mpp, &pinfo);
6635                 if (err == -ENOENT)
6636                         break;
6637                 if (err)
6638                         goto out_err;
6639
6640                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6641                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6642                                        wdev->netdev, dst, mpp,
6643                                        &pinfo) < 0)
6644                         goto out;
6645
6646                 path_idx++;
6647         }
6648
6649  out:
6650         cb->args[2] = path_idx;
6651         err = skb->len;
6652  out_err:
6653         rtnl_unlock();
6654         return err;
6655 }
6656
6657 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6658 {
6659         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6660         struct net_device *dev = info->user_ptr[1];
6661         struct wireless_dev *wdev = dev->ieee80211_ptr;
6662         struct bss_parameters params;
6663         int err;
6664
6665         memset(&params, 0, sizeof(params));
6666         /* default to not changing parameters */
6667         params.use_cts_prot = -1;
6668         params.use_short_preamble = -1;
6669         params.use_short_slot_time = -1;
6670         params.ap_isolate = -1;
6671         params.ht_opmode = -1;
6672         params.p2p_ctwindow = -1;
6673         params.p2p_opp_ps = -1;
6674
6675         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6676                 params.use_cts_prot =
6677                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6678         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6679                 params.use_short_preamble =
6680                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6681         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6682                 params.use_short_slot_time =
6683                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6684         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6685                 params.basic_rates =
6686                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6687                 params.basic_rates_len =
6688                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6689         }
6690         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6691                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6692         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6693                 params.ht_opmode =
6694                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6695
6696         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6697                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6698                         return -EINVAL;
6699                 params.p2p_ctwindow =
6700                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6701                 if (params.p2p_ctwindow != 0 &&
6702                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6703                         return -EINVAL;
6704         }
6705
6706         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6707                 u8 tmp;
6708
6709                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6710                         return -EINVAL;
6711                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6712                 params.p2p_opp_ps = tmp;
6713                 if (params.p2p_opp_ps &&
6714                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6715                         return -EINVAL;
6716         }
6717
6718         if (!rdev->ops->change_bss)
6719                 return -EOPNOTSUPP;
6720
6721         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6722             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6723                 return -EOPNOTSUPP;
6724
6725         wdev_lock(wdev);
6726         err = rdev_change_bss(rdev, dev, &params);
6727         wdev_unlock(wdev);
6728
6729         return err;
6730 }
6731
6732 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6733 {
6734         char *data = NULL;
6735         bool is_indoor;
6736         enum nl80211_user_reg_hint_type user_reg_hint_type;
6737         u32 owner_nlportid;
6738
6739         /*
6740          * You should only get this when cfg80211 hasn't yet initialized
6741          * completely when built-in to the kernel right between the time
6742          * window between nl80211_init() and regulatory_init(), if that is
6743          * even possible.
6744          */
6745         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6746                 return -EINPROGRESS;
6747
6748         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6749                 user_reg_hint_type =
6750                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6751         else
6752                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6753
6754         switch (user_reg_hint_type) {
6755         case NL80211_USER_REG_HINT_USER:
6756         case NL80211_USER_REG_HINT_CELL_BASE:
6757                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6758                         return -EINVAL;
6759
6760                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6761                 return regulatory_hint_user(data, user_reg_hint_type);
6762         case NL80211_USER_REG_HINT_INDOOR:
6763                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6764                         owner_nlportid = info->snd_portid;
6765                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6766                 } else {
6767                         owner_nlportid = 0;
6768                         is_indoor = true;
6769                 }
6770
6771                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6772         default:
6773                 return -EINVAL;
6774         }
6775 }
6776
6777 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6778 {
6779         return reg_reload_regdb();
6780 }
6781
6782 static int nl80211_get_mesh_config(struct sk_buff *skb,
6783                                    struct genl_info *info)
6784 {
6785         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6786         struct net_device *dev = info->user_ptr[1];
6787         struct wireless_dev *wdev = dev->ieee80211_ptr;
6788         struct mesh_config cur_params;
6789         int err = 0;
6790         void *hdr;
6791         struct nlattr *pinfoattr;
6792         struct sk_buff *msg;
6793
6794         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6795                 return -EOPNOTSUPP;
6796
6797         if (!rdev->ops->get_mesh_config)
6798                 return -EOPNOTSUPP;
6799
6800         wdev_lock(wdev);
6801         /* If not connected, get default parameters */
6802         if (!wdev->mesh_id_len)
6803                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6804         else
6805                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6806         wdev_unlock(wdev);
6807
6808         if (err)
6809                 return err;
6810
6811         /* Draw up a netlink message to send back */
6812         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6813         if (!msg)
6814                 return -ENOMEM;
6815         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6816                              NL80211_CMD_GET_MESH_CONFIG);
6817         if (!hdr)
6818                 goto out;
6819         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6820         if (!pinfoattr)
6821                 goto nla_put_failure;
6822         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6823             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6824                         cur_params.dot11MeshRetryTimeout) ||
6825             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6826                         cur_params.dot11MeshConfirmTimeout) ||
6827             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6828                         cur_params.dot11MeshHoldingTimeout) ||
6829             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6830                         cur_params.dot11MeshMaxPeerLinks) ||
6831             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6832                        cur_params.dot11MeshMaxRetries) ||
6833             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6834                        cur_params.dot11MeshTTL) ||
6835             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6836                        cur_params.element_ttl) ||
6837             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6838                        cur_params.auto_open_plinks) ||
6839             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6840                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6841             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6842                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6843             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6844                         cur_params.path_refresh_time) ||
6845             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6846                         cur_params.min_discovery_timeout) ||
6847             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6848                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6849             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6850                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6851             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6852                         cur_params.dot11MeshHWMPperrMinInterval) ||
6853             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6854                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6855             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6856                        cur_params.dot11MeshHWMPRootMode) ||
6857             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6858                         cur_params.dot11MeshHWMPRannInterval) ||
6859             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6860                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6861             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6862                        cur_params.dot11MeshForwarding) ||
6863             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6864                         cur_params.rssi_threshold) ||
6865             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6866                         cur_params.ht_opmode) ||
6867             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6868                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6869             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6870                         cur_params.dot11MeshHWMProotInterval) ||
6871             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6872                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6873             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6874                         cur_params.power_mode) ||
6875             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6876                         cur_params.dot11MeshAwakeWindowDuration) ||
6877             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6878                         cur_params.plink_timeout) ||
6879             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6880                        cur_params.dot11MeshConnectedToMeshGate))
6881                 goto nla_put_failure;
6882         nla_nest_end(msg, pinfoattr);
6883         genlmsg_end(msg, hdr);
6884         return genlmsg_reply(msg, info);
6885
6886  nla_put_failure:
6887  out:
6888         nlmsg_free(msg);
6889         return -ENOBUFS;
6890 }
6891
6892 static const struct nla_policy
6893 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6894         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6895                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6896         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6897                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6898         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6899                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6900         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6901                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6902         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6903         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6904         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6905         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6906         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6907                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6908         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6909         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6910         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6911         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6912         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6913                 NLA_POLICY_MIN(NLA_U16, 1),
6914         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6915                 NLA_POLICY_MIN(NLA_U16, 1),
6916         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6917                 NLA_POLICY_MIN(NLA_U16, 1),
6918         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6919         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6920                 NLA_POLICY_MIN(NLA_U16, 1),
6921         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6922         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6923         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6924                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6925         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6926         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6927         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6928                 NLA_POLICY_MIN(NLA_U16, 1),
6929         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6930                 NLA_POLICY_MIN(NLA_U16, 1),
6931         [NL80211_MESHCONF_POWER_MODE] =
6932                 NLA_POLICY_RANGE(NLA_U32,
6933                                  NL80211_MESH_POWER_ACTIVE,
6934                                  NL80211_MESH_POWER_MAX),
6935         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6936         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6937         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6938 };
6939
6940 static const struct nla_policy
6941         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6942         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6943         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6944         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6945         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6946         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6947         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6948         [NL80211_MESH_SETUP_IE] =
6949                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6950                                        IEEE80211_MAX_DATA_LEN),
6951         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6952 };
6953
6954 static int nl80211_parse_mesh_config(struct genl_info *info,
6955                                      struct mesh_config *cfg,
6956                                      u32 *mask_out)
6957 {
6958         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6959         u32 mask = 0;
6960         u16 ht_opmode;
6961
6962 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6963 do {                                                                    \
6964         if (tb[attr]) {                                                 \
6965                 cfg->param = fn(tb[attr]);                              \
6966                 mask |= BIT((attr) - 1);                                \
6967         }                                                               \
6968 } while (0)
6969
6970         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6971                 return -EINVAL;
6972         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6973                 return -EINVAL;
6974
6975         /* This makes sure that there aren't more than 32 mesh config
6976          * parameters (otherwise our bitfield scheme would not work.) */
6977         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6978
6979         /* Fill in the params struct */
6980         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6981                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6982         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6983                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6984                                   nla_get_u16);
6985         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6986                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6987                                   nla_get_u16);
6988         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6989                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6990                                   nla_get_u16);
6991         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6992                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6993         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6994                                   NL80211_MESHCONF_TTL, nla_get_u8);
6995         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6996                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6997         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6998                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6999                                   nla_get_u8);
7000         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7001                                   mask,
7002                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7003                                   nla_get_u32);
7004         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7005                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7006                                   nla_get_u8);
7007         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7008                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7009                                   nla_get_u32);
7010         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7011             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7012                 return -EINVAL;
7013         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7014                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7015                                   nla_get_u16);
7016         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7017                                   mask,
7018                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7019                                   nla_get_u32);
7020         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7021             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7022              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7023                 return -EINVAL;
7024         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7025                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7026                                   nla_get_u16);
7027         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7028                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7029                                   nla_get_u16);
7030         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7031                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7032                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7033                                   nla_get_u16);
7034         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7035                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7036         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7037                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7038                                   nla_get_u16);
7039         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7040                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7041                                   nla_get_u8);
7042         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7043                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7044         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7045                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7046                                   nla_get_s32);
7047         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7048                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7049                                   nla_get_u8);
7050         /*
7051          * Check HT operation mode based on
7052          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7053          */
7054         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7055                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7056
7057                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7058                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7059                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7060                         return -EINVAL;
7061
7062                 /* NON_HT_STA bit is reserved, but some programs set it */
7063                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7064
7065                 cfg->ht_opmode = ht_opmode;
7066                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7067         }
7068         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7069                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7070                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7071                                   nla_get_u32);
7072         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7073             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7074              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7075                 return -EINVAL;
7076         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7077                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7078                                   nla_get_u16);
7079         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7080                                   mask,
7081                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7082                                   nla_get_u16);
7083         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7084                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7085         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7086                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7087         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7088                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7089         if (mask_out)
7090                 *mask_out = mask;
7091
7092         return 0;
7093
7094 #undef FILL_IN_MESH_PARAM_IF_SET
7095 }
7096
7097 static int nl80211_parse_mesh_setup(struct genl_info *info,
7098                                      struct mesh_setup *setup)
7099 {
7100         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7101         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7102
7103         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7104                 return -EINVAL;
7105         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7106                 return -EINVAL;
7107
7108         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7109                 setup->sync_method =
7110                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7111                  IEEE80211_SYNC_METHOD_VENDOR :
7112                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7113
7114         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7115                 setup->path_sel_proto =
7116                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7117                  IEEE80211_PATH_PROTOCOL_VENDOR :
7118                  IEEE80211_PATH_PROTOCOL_HWMP;
7119
7120         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7121                 setup->path_metric =
7122                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7123                  IEEE80211_PATH_METRIC_VENDOR :
7124                  IEEE80211_PATH_METRIC_AIRTIME;
7125
7126         if (tb[NL80211_MESH_SETUP_IE]) {
7127                 struct nlattr *ieattr =
7128                         tb[NL80211_MESH_SETUP_IE];
7129                 setup->ie = nla_data(ieattr);
7130                 setup->ie_len = nla_len(ieattr);
7131         }
7132         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7133             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7134                 return -EINVAL;
7135         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7136         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7137         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7138         if (setup->is_secure)
7139                 setup->user_mpm = true;
7140
7141         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7142                 if (!setup->user_mpm)
7143                         return -EINVAL;
7144                 setup->auth_id =
7145                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7146         }
7147
7148         return 0;
7149 }
7150
7151 static int nl80211_update_mesh_config(struct sk_buff *skb,
7152                                       struct genl_info *info)
7153 {
7154         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7155         struct net_device *dev = info->user_ptr[1];
7156         struct wireless_dev *wdev = dev->ieee80211_ptr;
7157         struct mesh_config cfg;
7158         u32 mask;
7159         int err;
7160
7161         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7162                 return -EOPNOTSUPP;
7163
7164         if (!rdev->ops->update_mesh_config)
7165                 return -EOPNOTSUPP;
7166
7167         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7168         if (err)
7169                 return err;
7170
7171         wdev_lock(wdev);
7172         if (!wdev->mesh_id_len)
7173                 err = -ENOLINK;
7174
7175         if (!err)
7176                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7177
7178         wdev_unlock(wdev);
7179
7180         return err;
7181 }
7182
7183 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7184                               struct sk_buff *msg)
7185 {
7186         struct nlattr *nl_reg_rules;
7187         unsigned int i;
7188
7189         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7190             (regdom->dfs_region &&
7191              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7192                 goto nla_put_failure;
7193
7194         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7195         if (!nl_reg_rules)
7196                 goto nla_put_failure;
7197
7198         for (i = 0; i < regdom->n_reg_rules; i++) {
7199                 struct nlattr *nl_reg_rule;
7200                 const struct ieee80211_reg_rule *reg_rule;
7201                 const struct ieee80211_freq_range *freq_range;
7202                 const struct ieee80211_power_rule *power_rule;
7203                 unsigned int max_bandwidth_khz;
7204
7205                 reg_rule = &regdom->reg_rules[i];
7206                 freq_range = &reg_rule->freq_range;
7207                 power_rule = &reg_rule->power_rule;
7208
7209                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7210                 if (!nl_reg_rule)
7211                         goto nla_put_failure;
7212
7213                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7214                 if (!max_bandwidth_khz)
7215                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7216                                                                   reg_rule);
7217
7218                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7219                                 reg_rule->flags) ||
7220                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7221                                 freq_range->start_freq_khz) ||
7222                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7223                                 freq_range->end_freq_khz) ||
7224                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7225                                 max_bandwidth_khz) ||
7226                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7227                                 power_rule->max_antenna_gain) ||
7228                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7229                                 power_rule->max_eirp) ||
7230                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7231                                 reg_rule->dfs_cac_ms))
7232                         goto nla_put_failure;
7233
7234                 nla_nest_end(msg, nl_reg_rule);
7235         }
7236
7237         nla_nest_end(msg, nl_reg_rules);
7238         return 0;
7239
7240 nla_put_failure:
7241         return -EMSGSIZE;
7242 }
7243
7244 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7245 {
7246         const struct ieee80211_regdomain *regdom = NULL;
7247         struct cfg80211_registered_device *rdev;
7248         struct wiphy *wiphy = NULL;
7249         struct sk_buff *msg;
7250         void *hdr;
7251
7252         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7253         if (!msg)
7254                 return -ENOBUFS;
7255
7256         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7257                              NL80211_CMD_GET_REG);
7258         if (!hdr)
7259                 goto put_failure;
7260
7261         if (info->attrs[NL80211_ATTR_WIPHY]) {
7262                 bool self_managed;
7263
7264                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7265                 if (IS_ERR(rdev)) {
7266                         nlmsg_free(msg);
7267                         return PTR_ERR(rdev);
7268                 }
7269
7270                 wiphy = &rdev->wiphy;
7271                 self_managed = wiphy->regulatory_flags &
7272                                REGULATORY_WIPHY_SELF_MANAGED;
7273                 regdom = get_wiphy_regdom(wiphy);
7274
7275                 /* a self-managed-reg device must have a private regdom */
7276                 if (WARN_ON(!regdom && self_managed)) {
7277                         nlmsg_free(msg);
7278                         return -EINVAL;
7279                 }
7280
7281                 if (regdom &&
7282                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7283                         goto nla_put_failure;
7284         }
7285
7286         if (!wiphy && reg_last_request_cell_base() &&
7287             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7288                         NL80211_USER_REG_HINT_CELL_BASE))
7289                 goto nla_put_failure;
7290
7291         rcu_read_lock();
7292
7293         if (!regdom)
7294                 regdom = rcu_dereference(cfg80211_regdomain);
7295
7296         if (nl80211_put_regdom(regdom, msg))
7297                 goto nla_put_failure_rcu;
7298
7299         rcu_read_unlock();
7300
7301         genlmsg_end(msg, hdr);
7302         return genlmsg_reply(msg, info);
7303
7304 nla_put_failure_rcu:
7305         rcu_read_unlock();
7306 nla_put_failure:
7307 put_failure:
7308         nlmsg_free(msg);
7309         return -EMSGSIZE;
7310 }
7311
7312 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7313                                u32 seq, int flags, struct wiphy *wiphy,
7314                                const struct ieee80211_regdomain *regdom)
7315 {
7316         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7317                                    NL80211_CMD_GET_REG);
7318
7319         if (!hdr)
7320                 return -1;
7321
7322         genl_dump_check_consistent(cb, hdr);
7323
7324         if (nl80211_put_regdom(regdom, msg))
7325                 goto nla_put_failure;
7326
7327         if (!wiphy && reg_last_request_cell_base() &&
7328             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7329                         NL80211_USER_REG_HINT_CELL_BASE))
7330                 goto nla_put_failure;
7331
7332         if (wiphy &&
7333             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7334                 goto nla_put_failure;
7335
7336         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7337             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7338                 goto nla_put_failure;
7339
7340         genlmsg_end(msg, hdr);
7341         return 0;
7342
7343 nla_put_failure:
7344         genlmsg_cancel(msg, hdr);
7345         return -EMSGSIZE;
7346 }
7347
7348 static int nl80211_get_reg_dump(struct sk_buff *skb,
7349                                 struct netlink_callback *cb)
7350 {
7351         const struct ieee80211_regdomain *regdom = NULL;
7352         struct cfg80211_registered_device *rdev;
7353         int err, reg_idx, start = cb->args[2];
7354
7355         rtnl_lock();
7356
7357         if (cfg80211_regdomain && start == 0) {
7358                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7359                                           NLM_F_MULTI, NULL,
7360                                           rtnl_dereference(cfg80211_regdomain));
7361                 if (err < 0)
7362                         goto out_err;
7363         }
7364
7365         /* the global regdom is idx 0 */
7366         reg_idx = 1;
7367         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7368                 regdom = get_wiphy_regdom(&rdev->wiphy);
7369                 if (!regdom)
7370                         continue;
7371
7372                 if (++reg_idx <= start)
7373                         continue;
7374
7375                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7376                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7377                 if (err < 0) {
7378                         reg_idx--;
7379                         break;
7380                 }
7381         }
7382
7383         cb->args[2] = reg_idx;
7384         err = skb->len;
7385 out_err:
7386         rtnl_unlock();
7387         return err;
7388 }
7389
7390 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7391 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7392         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7393         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7394         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7395         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7396         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7397         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7398         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7399 };
7400
7401 static int parse_reg_rule(struct nlattr *tb[],
7402         struct ieee80211_reg_rule *reg_rule)
7403 {
7404         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7405         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7406
7407         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7408                 return -EINVAL;
7409         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7410                 return -EINVAL;
7411         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7412                 return -EINVAL;
7413         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7414                 return -EINVAL;
7415         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7416                 return -EINVAL;
7417
7418         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7419
7420         freq_range->start_freq_khz =
7421                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7422         freq_range->end_freq_khz =
7423                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7424         freq_range->max_bandwidth_khz =
7425                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7426
7427         power_rule->max_eirp =
7428                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7429
7430         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7431                 power_rule->max_antenna_gain =
7432                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7433
7434         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7435                 reg_rule->dfs_cac_ms =
7436                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7437
7438         return 0;
7439 }
7440
7441 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7442 {
7443         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7444         struct nlattr *nl_reg_rule;
7445         char *alpha2;
7446         int rem_reg_rules, r;
7447         u32 num_rules = 0, rule_idx = 0;
7448         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7449         struct ieee80211_regdomain *rd;
7450
7451         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7452                 return -EINVAL;
7453
7454         if (!info->attrs[NL80211_ATTR_REG_RULES])
7455                 return -EINVAL;
7456
7457         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7458
7459         if (info->attrs[NL80211_ATTR_DFS_REGION])
7460                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7461
7462         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7463                             rem_reg_rules) {
7464                 num_rules++;
7465                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7466                         return -EINVAL;
7467         }
7468
7469         if (!reg_is_valid_request(alpha2))
7470                 return -EINVAL;
7471
7472         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7473         if (!rd)
7474                 return -ENOMEM;
7475
7476         rd->n_reg_rules = num_rules;
7477         rd->alpha2[0] = alpha2[0];
7478         rd->alpha2[1] = alpha2[1];
7479
7480         /*
7481          * Disable DFS master mode if the DFS region was
7482          * not supported or known on this kernel.
7483          */
7484         if (reg_supported_dfs_region(dfs_region))
7485                 rd->dfs_region = dfs_region;
7486
7487         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7488                             rem_reg_rules) {
7489                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7490                                                 nl_reg_rule, reg_rule_policy,
7491                                                 info->extack);
7492                 if (r)
7493                         goto bad_reg;
7494                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7495                 if (r)
7496                         goto bad_reg;
7497
7498                 rule_idx++;
7499
7500                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7501                         r = -EINVAL;
7502                         goto bad_reg;
7503                 }
7504         }
7505
7506         /* set_regdom takes ownership of rd */
7507         return set_regdom(rd, REGD_SOURCE_CRDA);
7508  bad_reg:
7509         kfree(rd);
7510         return r;
7511 }
7512 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7513
7514 static int validate_scan_freqs(struct nlattr *freqs)
7515 {
7516         struct nlattr *attr1, *attr2;
7517         int n_channels = 0, tmp1, tmp2;
7518
7519         nla_for_each_nested(attr1, freqs, tmp1)
7520                 if (nla_len(attr1) != sizeof(u32))
7521                         return 0;
7522
7523         nla_for_each_nested(attr1, freqs, tmp1) {
7524                 n_channels++;
7525                 /*
7526                  * Some hardware has a limited channel list for
7527                  * scanning, and it is pretty much nonsensical
7528                  * to scan for a channel twice, so disallow that
7529                  * and don't require drivers to check that the
7530                  * channel list they get isn't longer than what
7531                  * they can scan, as long as they can scan all
7532                  * the channels they registered at once.
7533                  */
7534                 nla_for_each_nested(attr2, freqs, tmp2)
7535                         if (attr1 != attr2 &&
7536                             nla_get_u32(attr1) == nla_get_u32(attr2))
7537                                 return 0;
7538         }
7539
7540         return n_channels;
7541 }
7542
7543 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7544 {
7545         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7546 }
7547
7548 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7549                             struct cfg80211_bss_selection *bss_select)
7550 {
7551         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7552         struct nlattr *nest;
7553         int err;
7554         bool found = false;
7555         int i;
7556
7557         /* only process one nested attribute */
7558         nest = nla_data(nla);
7559         if (!nla_ok(nest, nla_len(nest)))
7560                 return -EINVAL;
7561
7562         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7563                                           nest, nl80211_bss_select_policy,
7564                                           NULL);
7565         if (err)
7566                 return err;
7567
7568         /* only one attribute may be given */
7569         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7570                 if (attr[i]) {
7571                         if (found)
7572                                 return -EINVAL;
7573                         found = true;
7574                 }
7575         }
7576
7577         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7578
7579         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7580                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7581
7582         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7583                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7584                 bss_select->param.band_pref =
7585                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7586                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7587                         return -EINVAL;
7588         }
7589
7590         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7591                 struct nl80211_bss_select_rssi_adjust *adj_param;
7592
7593                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7594                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7595                 bss_select->param.adjust.band = adj_param->band;
7596                 bss_select->param.adjust.delta = adj_param->delta;
7597                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7598                         return -EINVAL;
7599         }
7600
7601         /* user-space did not provide behaviour attribute */
7602         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7603                 return -EINVAL;
7604
7605         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7606                 return -EINVAL;
7607
7608         return 0;
7609 }
7610
7611 int nl80211_parse_random_mac(struct nlattr **attrs,
7612                              u8 *mac_addr, u8 *mac_addr_mask)
7613 {
7614         int i;
7615
7616         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7617                 eth_zero_addr(mac_addr);
7618                 eth_zero_addr(mac_addr_mask);
7619                 mac_addr[0] = 0x2;
7620                 mac_addr_mask[0] = 0x3;
7621
7622                 return 0;
7623         }
7624
7625         /* need both or none */
7626         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7627                 return -EINVAL;
7628
7629         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7630         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7631
7632         /* don't allow or configure an mcast address */
7633         if (!is_multicast_ether_addr(mac_addr_mask) ||
7634             is_multicast_ether_addr(mac_addr))
7635                 return -EINVAL;
7636
7637         /*
7638          * allow users to pass a MAC address that has bits set outside
7639          * of the mask, but don't bother drivers with having to deal
7640          * with such bits
7641          */
7642         for (i = 0; i < ETH_ALEN; i++)
7643                 mac_addr[i] &= mac_addr_mask[i];
7644
7645         return 0;
7646 }
7647
7648 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7649 {
7650         ASSERT_WDEV_LOCK(wdev);
7651
7652         if (!cfg80211_beaconing_iface_active(wdev))
7653                 return true;
7654
7655         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7656                 return true;
7657
7658         return regulatory_pre_cac_allowed(wdev->wiphy);
7659 }
7660
7661 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7662                                     enum nl80211_ext_feature_index feat)
7663 {
7664         if (!(flags & flag))
7665                 return true;
7666         if (wiphy_ext_feature_isset(wiphy, feat))
7667                 return true;
7668         return false;
7669 }
7670
7671 static int
7672 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7673                          void *request, struct nlattr **attrs,
7674                          bool is_sched_scan)
7675 {
7676         u8 *mac_addr, *mac_addr_mask;
7677         u32 *flags;
7678         enum nl80211_feature_flags randomness_flag;
7679
7680         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7681                 return 0;
7682
7683         if (is_sched_scan) {
7684                 struct cfg80211_sched_scan_request *req = request;
7685
7686                 randomness_flag = wdev ?
7687                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7688                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7689                 flags = &req->flags;
7690                 mac_addr = req->mac_addr;
7691                 mac_addr_mask = req->mac_addr_mask;
7692         } else {
7693                 struct cfg80211_scan_request *req = request;
7694
7695                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7696                 flags = &req->flags;
7697                 mac_addr = req->mac_addr;
7698                 mac_addr_mask = req->mac_addr_mask;
7699         }
7700
7701         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7702
7703         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7704              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7705             !nl80211_check_scan_feat(wiphy, *flags,
7706                                      NL80211_SCAN_FLAG_LOW_SPAN,
7707                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7708             !nl80211_check_scan_feat(wiphy, *flags,
7709                                      NL80211_SCAN_FLAG_LOW_POWER,
7710                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7711             !nl80211_check_scan_feat(wiphy, *flags,
7712                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7713                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7714             !nl80211_check_scan_feat(wiphy, *flags,
7715                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7716                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7717             !nl80211_check_scan_feat(wiphy, *flags,
7718                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7719                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7720             !nl80211_check_scan_feat(wiphy, *flags,
7721                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7722                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7723             !nl80211_check_scan_feat(wiphy, *flags,
7724                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7725                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7726             !nl80211_check_scan_feat(wiphy, *flags,
7727                                      NL80211_SCAN_FLAG_RANDOM_SN,
7728                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7729             !nl80211_check_scan_feat(wiphy, *flags,
7730                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7731                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7732                 return -EOPNOTSUPP;
7733
7734         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7735                 int err;
7736
7737                 if (!(wiphy->features & randomness_flag) ||
7738                     (wdev && wdev->current_bss))
7739                         return -EOPNOTSUPP;
7740
7741                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7742                 if (err)
7743                         return err;
7744         }
7745
7746         return 0;
7747 }
7748
7749 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7750 {
7751         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7752         struct wireless_dev *wdev = info->user_ptr[1];
7753         struct cfg80211_scan_request *request;
7754         struct nlattr *scan_freqs = NULL;
7755         bool scan_freqs_khz = false;
7756         struct nlattr *attr;
7757         struct wiphy *wiphy;
7758         int err, tmp, n_ssids = 0, n_channels, i;
7759         size_t ie_len;
7760
7761         wiphy = &rdev->wiphy;
7762
7763         if (wdev->iftype == NL80211_IFTYPE_NAN)
7764                 return -EOPNOTSUPP;
7765
7766         if (!rdev->ops->scan)
7767                 return -EOPNOTSUPP;
7768
7769         if (rdev->scan_req || rdev->scan_msg) {
7770                 err = -EBUSY;
7771                 goto unlock;
7772         }
7773
7774         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
7775                 if (!wiphy_ext_feature_isset(wiphy,
7776                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
7777                         return -EOPNOTSUPP;
7778                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
7779                 scan_freqs_khz = true;
7780         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
7781                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
7782
7783         if (scan_freqs) {
7784                 n_channels = validate_scan_freqs(scan_freqs);
7785                 if (!n_channels) {
7786                         err = -EINVAL;
7787                         goto unlock;
7788                 }
7789         } else {
7790                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7791         }
7792
7793         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7794                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7795                         n_ssids++;
7796
7797         if (n_ssids > wiphy->max_scan_ssids) {
7798                 err = -EINVAL;
7799                 goto unlock;
7800         }
7801
7802         if (info->attrs[NL80211_ATTR_IE])
7803                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7804         else
7805                 ie_len = 0;
7806
7807         if (ie_len > wiphy->max_scan_ie_len) {
7808                 err = -EINVAL;
7809                 goto unlock;
7810         }
7811
7812         request = kzalloc(sizeof(*request)
7813                         + sizeof(*request->ssids) * n_ssids
7814                         + sizeof(*request->channels) * n_channels
7815                         + ie_len, GFP_KERNEL);
7816         if (!request) {
7817                 err = -ENOMEM;
7818                 goto unlock;
7819         }
7820
7821         if (n_ssids)
7822                 request->ssids = (void *)&request->channels[n_channels];
7823         request->n_ssids = n_ssids;
7824         if (ie_len) {
7825                 if (n_ssids)
7826                         request->ie = (void *)(request->ssids + n_ssids);
7827                 else
7828                         request->ie = (void *)(request->channels + n_channels);
7829         }
7830
7831         i = 0;
7832         if (scan_freqs) {
7833                 /* user specified, bail out if channel not found */
7834                 nla_for_each_nested(attr, scan_freqs, tmp) {
7835                         struct ieee80211_channel *chan;
7836                         int freq = nla_get_u32(attr);
7837
7838                         if (!scan_freqs_khz)
7839                                 freq = MHZ_TO_KHZ(freq);
7840
7841                         chan = ieee80211_get_channel_khz(wiphy, freq);
7842                         if (!chan) {
7843                                 err = -EINVAL;
7844                                 goto out_free;
7845                         }
7846
7847                         /* ignore disabled channels */
7848                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7849                                 continue;
7850
7851                         request->channels[i] = chan;
7852                         i++;
7853                 }
7854         } else {
7855                 enum nl80211_band band;
7856
7857                 /* all channels */
7858                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7859                         int j;
7860
7861                         if (!wiphy->bands[band])
7862                                 continue;
7863                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7864                                 struct ieee80211_channel *chan;
7865
7866                                 chan = &wiphy->bands[band]->channels[j];
7867
7868                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7869                                         continue;
7870
7871                                 request->channels[i] = chan;
7872                                 i++;
7873                         }
7874                 }
7875         }
7876
7877         if (!i) {
7878                 err = -EINVAL;
7879                 goto out_free;
7880         }
7881
7882         request->n_channels = i;
7883
7884         wdev_lock(wdev);
7885         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7886                 struct ieee80211_channel *chan;
7887
7888                 if (request->n_channels != 1) {
7889                         wdev_unlock(wdev);
7890                         err = -EBUSY;
7891                         goto out_free;
7892                 }
7893
7894                 chan = request->channels[0];
7895                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7896                         wdev_unlock(wdev);
7897                         err = -EBUSY;
7898                         goto out_free;
7899                 }
7900         }
7901         wdev_unlock(wdev);
7902
7903         i = 0;
7904         if (n_ssids) {
7905                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7906                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7907                                 err = -EINVAL;
7908                                 goto out_free;
7909                         }
7910                         request->ssids[i].ssid_len = nla_len(attr);
7911                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7912                         i++;
7913                 }
7914         }
7915
7916         if (info->attrs[NL80211_ATTR_IE]) {
7917                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7918                 memcpy((void *)request->ie,
7919                        nla_data(info->attrs[NL80211_ATTR_IE]),
7920                        request->ie_len);
7921         }
7922
7923         for (i = 0; i < NUM_NL80211_BANDS; i++)
7924                 if (wiphy->bands[i])
7925                         request->rates[i] =
7926                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7927
7928         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7929                 nla_for_each_nested(attr,
7930                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7931                                     tmp) {
7932                         enum nl80211_band band = nla_type(attr);
7933
7934                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7935                                 err = -EINVAL;
7936                                 goto out_free;
7937                         }
7938
7939                         if (!wiphy->bands[band])
7940                                 continue;
7941
7942                         err = ieee80211_get_ratemask(wiphy->bands[band],
7943                                                      nla_data(attr),
7944                                                      nla_len(attr),
7945                                                      &request->rates[band]);
7946                         if (err)
7947                                 goto out_free;
7948                 }
7949         }
7950
7951         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7952                 if (!wiphy_ext_feature_isset(wiphy,
7953                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7954                         err = -EOPNOTSUPP;
7955                         goto out_free;
7956                 }
7957
7958                 request->duration =
7959                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7960                 request->duration_mandatory =
7961                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7962         }
7963
7964         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7965                                        false);
7966         if (err)
7967                 goto out_free;
7968
7969         request->no_cck =
7970                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7971
7972         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7973          * BSSID to scan for. This was problematic because that same attribute
7974          * was already used for another purpose (local random MAC address). The
7975          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7976          * compatibility with older userspace components, also use the
7977          * NL80211_ATTR_MAC value here if it can be determined to be used for
7978          * the specific BSSID use case instead of the random MAC address
7979          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7980          */
7981         if (info->attrs[NL80211_ATTR_BSSID])
7982                 memcpy(request->bssid,
7983                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7984         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7985                  info->attrs[NL80211_ATTR_MAC])
7986                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7987                        ETH_ALEN);
7988         else
7989                 eth_broadcast_addr(request->bssid);
7990
7991         request->wdev = wdev;
7992         request->wiphy = &rdev->wiphy;
7993         request->scan_start = jiffies;
7994
7995         rdev->scan_req = request;
7996         err = rdev_scan(rdev, request);
7997
7998         if (!err) {
7999                 nl80211_send_scan_start(rdev, wdev);
8000                 if (wdev->netdev)
8001                         dev_hold(wdev->netdev);
8002         } else {
8003  out_free:
8004                 rdev->scan_req = NULL;
8005                 kfree(request);
8006         }
8007
8008  unlock:
8009         return err;
8010 }
8011
8012 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8013 {
8014         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8015         struct wireless_dev *wdev = info->user_ptr[1];
8016
8017         if (!rdev->ops->abort_scan)
8018                 return -EOPNOTSUPP;
8019
8020         if (rdev->scan_msg)
8021                 return 0;
8022
8023         if (!rdev->scan_req)
8024                 return -ENOENT;
8025
8026         rdev_abort_scan(rdev, wdev);
8027         return 0;
8028 }
8029
8030 static int
8031 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8032                                struct cfg80211_sched_scan_request *request,
8033                                struct nlattr **attrs)
8034 {
8035         int tmp, err, i = 0;
8036         struct nlattr *attr;
8037
8038         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8039                 u32 interval;
8040
8041                 /*
8042                  * If scan plans are not specified,
8043                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8044                  * case one scan plan will be set with the specified scan
8045                  * interval and infinite number of iterations.
8046                  */
8047                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8048                 if (!interval)
8049                         return -EINVAL;
8050
8051                 request->scan_plans[0].interval =
8052                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8053                 if (!request->scan_plans[0].interval)
8054                         return -EINVAL;
8055
8056                 if (request->scan_plans[0].interval >
8057                     wiphy->max_sched_scan_plan_interval)
8058                         request->scan_plans[0].interval =
8059                                 wiphy->max_sched_scan_plan_interval;
8060
8061                 return 0;
8062         }
8063
8064         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8065                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8066
8067                 if (WARN_ON(i >= n_plans))
8068                         return -EINVAL;
8069
8070                 err = nla_parse_nested_deprecated(plan,
8071                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8072                                                   attr, nl80211_plan_policy,
8073                                                   NULL);
8074                 if (err)
8075                         return err;
8076
8077                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8078                         return -EINVAL;
8079
8080                 request->scan_plans[i].interval =
8081                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8082                 if (!request->scan_plans[i].interval ||
8083                     request->scan_plans[i].interval >
8084                     wiphy->max_sched_scan_plan_interval)
8085                         return -EINVAL;
8086
8087                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8088                         request->scan_plans[i].iterations =
8089                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8090                         if (!request->scan_plans[i].iterations ||
8091                             (request->scan_plans[i].iterations >
8092                              wiphy->max_sched_scan_plan_iterations))
8093                                 return -EINVAL;
8094                 } else if (i < n_plans - 1) {
8095                         /*
8096                          * All scan plans but the last one must specify
8097                          * a finite number of iterations
8098                          */
8099                         return -EINVAL;
8100                 }
8101
8102                 i++;
8103         }
8104
8105         /*
8106          * The last scan plan must not specify the number of
8107          * iterations, it is supposed to run infinitely
8108          */
8109         if (request->scan_plans[n_plans - 1].iterations)
8110                 return  -EINVAL;
8111
8112         return 0;
8113 }
8114
8115 static int
8116 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8117                                        struct cfg80211_match_set *match_sets,
8118                                        struct nlattr *tb_band_rssi,
8119                                        s32 rssi_thold)
8120 {
8121         struct nlattr *attr;
8122         int i, tmp, ret = 0;
8123
8124         if (!wiphy_ext_feature_isset(wiphy,
8125                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8126                 if (tb_band_rssi)
8127                         ret = -EOPNOTSUPP;
8128                 else
8129                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8130                                 match_sets->per_band_rssi_thold[i] =
8131                                         NL80211_SCAN_RSSI_THOLD_OFF;
8132                 return ret;
8133         }
8134
8135         for (i = 0; i < NUM_NL80211_BANDS; i++)
8136                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8137
8138         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8139                 enum nl80211_band band = nla_type(attr);
8140
8141                 if (band < 0 || band >= NUM_NL80211_BANDS)
8142                         return -EINVAL;
8143
8144                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8145         }
8146
8147         return 0;
8148 }
8149
8150 static struct cfg80211_sched_scan_request *
8151 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8152                          struct nlattr **attrs, int max_match_sets)
8153 {
8154         struct cfg80211_sched_scan_request *request;
8155         struct nlattr *attr;
8156         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8157         enum nl80211_band band;
8158         size_t ie_len;
8159         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8160         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8161
8162         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8163                 n_channels = validate_scan_freqs(
8164                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8165                 if (!n_channels)
8166                         return ERR_PTR(-EINVAL);
8167         } else {
8168                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8169         }
8170
8171         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8172                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8173                                     tmp)
8174                         n_ssids++;
8175
8176         if (n_ssids > wiphy->max_sched_scan_ssids)
8177                 return ERR_PTR(-EINVAL);
8178
8179         /*
8180          * First, count the number of 'real' matchsets. Due to an issue with
8181          * the old implementation, matchsets containing only the RSSI attribute
8182          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8183          * RSSI for all matchsets, rather than their own matchset for reporting
8184          * all APs with a strong RSSI. This is needed to be compatible with
8185          * older userspace that treated a matchset with only the RSSI as the
8186          * global RSSI for all other matchsets - if there are other matchsets.
8187          */
8188         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8189                 nla_for_each_nested(attr,
8190                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8191                                     tmp) {
8192                         struct nlattr *rssi;
8193
8194                         err = nla_parse_nested_deprecated(tb,
8195                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8196                                                           attr,
8197                                                           nl80211_match_policy,
8198                                                           NULL);
8199                         if (err)
8200                                 return ERR_PTR(err);
8201
8202                         /* SSID and BSSID are mutually exclusive */
8203                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8204                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8205                                 return ERR_PTR(-EINVAL);
8206
8207                         /* add other standalone attributes here */
8208                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8209                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8210                                 n_match_sets++;
8211                                 continue;
8212                         }
8213                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8214                         if (rssi)
8215                                 default_match_rssi = nla_get_s32(rssi);
8216                 }
8217         }
8218
8219         /* However, if there's no other matchset, add the RSSI one */
8220         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8221                 n_match_sets = 1;
8222
8223         if (n_match_sets > max_match_sets)
8224                 return ERR_PTR(-EINVAL);
8225
8226         if (attrs[NL80211_ATTR_IE])
8227                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8228         else
8229                 ie_len = 0;
8230
8231         if (ie_len > wiphy->max_sched_scan_ie_len)
8232                 return ERR_PTR(-EINVAL);
8233
8234         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8235                 /*
8236                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8237                  * each scan plan already specifies its own interval
8238                  */
8239                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8240                         return ERR_PTR(-EINVAL);
8241
8242                 nla_for_each_nested(attr,
8243                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8244                         n_plans++;
8245         } else {
8246                 /*
8247                  * The scan interval attribute is kept for backward
8248                  * compatibility. If no scan plans are specified and sched scan
8249                  * interval is specified, one scan plan will be set with this
8250                  * scan interval and infinite number of iterations.
8251                  */
8252                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8253                         return ERR_PTR(-EINVAL);
8254
8255                 n_plans = 1;
8256         }
8257
8258         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8259                 return ERR_PTR(-EINVAL);
8260
8261         if (!wiphy_ext_feature_isset(
8262                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8263             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8264              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8265                 return ERR_PTR(-EINVAL);
8266
8267         request = kzalloc(sizeof(*request)
8268                         + sizeof(*request->ssids) * n_ssids
8269                         + sizeof(*request->match_sets) * n_match_sets
8270                         + sizeof(*request->scan_plans) * n_plans
8271                         + sizeof(*request->channels) * n_channels
8272                         + ie_len, GFP_KERNEL);
8273         if (!request)
8274                 return ERR_PTR(-ENOMEM);
8275
8276         if (n_ssids)
8277                 request->ssids = (void *)&request->channels[n_channels];
8278         request->n_ssids = n_ssids;
8279         if (ie_len) {
8280                 if (n_ssids)
8281                         request->ie = (void *)(request->ssids + n_ssids);
8282                 else
8283                         request->ie = (void *)(request->channels + n_channels);
8284         }
8285
8286         if (n_match_sets) {
8287                 if (request->ie)
8288                         request->match_sets = (void *)(request->ie + ie_len);
8289                 else if (n_ssids)
8290                         request->match_sets =
8291                                 (void *)(request->ssids + n_ssids);
8292                 else
8293                         request->match_sets =
8294                                 (void *)(request->channels + n_channels);
8295         }
8296         request->n_match_sets = n_match_sets;
8297
8298         if (n_match_sets)
8299                 request->scan_plans = (void *)(request->match_sets +
8300                                                n_match_sets);
8301         else if (request->ie)
8302                 request->scan_plans = (void *)(request->ie + ie_len);
8303         else if (n_ssids)
8304                 request->scan_plans = (void *)(request->ssids + n_ssids);
8305         else
8306                 request->scan_plans = (void *)(request->channels + n_channels);
8307
8308         request->n_scan_plans = n_plans;
8309
8310         i = 0;
8311         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8312                 /* user specified, bail out if channel not found */
8313                 nla_for_each_nested(attr,
8314                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8315                                     tmp) {
8316                         struct ieee80211_channel *chan;
8317
8318                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8319
8320                         if (!chan) {
8321                                 err = -EINVAL;
8322                                 goto out_free;
8323                         }
8324
8325                         /* ignore disabled channels */
8326                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8327                                 continue;
8328
8329                         request->channels[i] = chan;
8330                         i++;
8331                 }
8332         } else {
8333                 /* all channels */
8334                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8335                         int j;
8336
8337                         if (!wiphy->bands[band])
8338                                 continue;
8339                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8340                                 struct ieee80211_channel *chan;
8341
8342                                 chan = &wiphy->bands[band]->channels[j];
8343
8344                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8345                                         continue;
8346
8347                                 request->channels[i] = chan;
8348                                 i++;
8349                         }
8350                 }
8351         }
8352
8353         if (!i) {
8354                 err = -EINVAL;
8355                 goto out_free;
8356         }
8357
8358         request->n_channels = i;
8359
8360         i = 0;
8361         if (n_ssids) {
8362                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8363                                     tmp) {
8364                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8365                                 err = -EINVAL;
8366                                 goto out_free;
8367                         }
8368                         request->ssids[i].ssid_len = nla_len(attr);
8369                         memcpy(request->ssids[i].ssid, nla_data(attr),
8370                                nla_len(attr));
8371                         i++;
8372                 }
8373         }
8374
8375         i = 0;
8376         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8377                 nla_for_each_nested(attr,
8378                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8379                                     tmp) {
8380                         struct nlattr *ssid, *bssid, *rssi;
8381
8382                         err = nla_parse_nested_deprecated(tb,
8383                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8384                                                           attr,
8385                                                           nl80211_match_policy,
8386                                                           NULL);
8387                         if (err)
8388                                 goto out_free;
8389                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8390                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8391
8392                         if (!ssid && !bssid) {
8393                                 i++;
8394                                 continue;
8395                         }
8396
8397                         if (WARN_ON(i >= n_match_sets)) {
8398                                 /* this indicates a programming error,
8399                                  * the loop above should have verified
8400                                  * things properly
8401                                  */
8402                                 err = -EINVAL;
8403                                 goto out_free;
8404                         }
8405
8406                         if (ssid) {
8407                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8408                                         err = -EINVAL;
8409                                         goto out_free;
8410                                 }
8411                                 memcpy(request->match_sets[i].ssid.ssid,
8412                                        nla_data(ssid), nla_len(ssid));
8413                                 request->match_sets[i].ssid.ssid_len =
8414                                         nla_len(ssid);
8415                         }
8416                         if (bssid) {
8417                                 if (nla_len(bssid) != ETH_ALEN) {
8418                                         err = -EINVAL;
8419                                         goto out_free;
8420                                 }
8421                                 memcpy(request->match_sets[i].bssid,
8422                                        nla_data(bssid), ETH_ALEN);
8423                         }
8424
8425                         /* special attribute - old implementation w/a */
8426                         request->match_sets[i].rssi_thold = default_match_rssi;
8427                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8428                         if (rssi)
8429                                 request->match_sets[i].rssi_thold =
8430                                         nla_get_s32(rssi);
8431
8432                         /* Parse per band RSSI attribute */
8433                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8434                                 &request->match_sets[i],
8435                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8436                                 request->match_sets[i].rssi_thold);
8437                         if (err)
8438                                 goto out_free;
8439
8440                         i++;
8441                 }
8442
8443                 /* there was no other matchset, so the RSSI one is alone */
8444                 if (i == 0 && n_match_sets)
8445                         request->match_sets[0].rssi_thold = default_match_rssi;
8446
8447                 request->min_rssi_thold = INT_MAX;
8448                 for (i = 0; i < n_match_sets; i++)
8449                         request->min_rssi_thold =
8450                                 min(request->match_sets[i].rssi_thold,
8451                                     request->min_rssi_thold);
8452         } else {
8453                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8454         }
8455
8456         if (ie_len) {
8457                 request->ie_len = ie_len;
8458                 memcpy((void *)request->ie,
8459                        nla_data(attrs[NL80211_ATTR_IE]),
8460                        request->ie_len);
8461         }
8462
8463         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8464         if (err)
8465                 goto out_free;
8466
8467         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8468                 request->delay =
8469                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8470
8471         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8472                 request->relative_rssi = nla_get_s8(
8473                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8474                 request->relative_rssi_set = true;
8475         }
8476
8477         if (request->relative_rssi_set &&
8478             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8479                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8480
8481                 rssi_adjust = nla_data(
8482                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8483                 request->rssi_adjust.band = rssi_adjust->band;
8484                 request->rssi_adjust.delta = rssi_adjust->delta;
8485                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8486                         err = -EINVAL;
8487                         goto out_free;
8488                 }
8489         }
8490
8491         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8492         if (err)
8493                 goto out_free;
8494
8495         request->scan_start = jiffies;
8496
8497         return request;
8498
8499 out_free:
8500         kfree(request);
8501         return ERR_PTR(err);
8502 }
8503
8504 static int nl80211_start_sched_scan(struct sk_buff *skb,
8505                                     struct genl_info *info)
8506 {
8507         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8508         struct net_device *dev = info->user_ptr[1];
8509         struct wireless_dev *wdev = dev->ieee80211_ptr;
8510         struct cfg80211_sched_scan_request *sched_scan_req;
8511         bool want_multi;
8512         int err;
8513
8514         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8515                 return -EOPNOTSUPP;
8516
8517         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8518         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8519         if (err)
8520                 return err;
8521
8522         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8523                                                   info->attrs,
8524                                                   rdev->wiphy.max_match_sets);
8525
8526         err = PTR_ERR_OR_ZERO(sched_scan_req);
8527         if (err)
8528                 goto out_err;
8529
8530         /* leave request id zero for legacy request
8531          * or if driver does not support multi-scheduled scan
8532          */
8533         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8534                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8535
8536         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8537         if (err)
8538                 goto out_free;
8539
8540         sched_scan_req->dev = dev;
8541         sched_scan_req->wiphy = &rdev->wiphy;
8542
8543         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8544                 sched_scan_req->owner_nlportid = info->snd_portid;
8545
8546         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8547
8548         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8549         return 0;
8550
8551 out_free:
8552         kfree(sched_scan_req);
8553 out_err:
8554         return err;
8555 }
8556
8557 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8558                                    struct genl_info *info)
8559 {
8560         struct cfg80211_sched_scan_request *req;
8561         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8562         u64 cookie;
8563
8564         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8565                 return -EOPNOTSUPP;
8566
8567         if (info->attrs[NL80211_ATTR_COOKIE]) {
8568                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8569                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8570         }
8571
8572         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8573                                      struct cfg80211_sched_scan_request,
8574                                      list);
8575         if (!req || req->reqid ||
8576             (req->owner_nlportid &&
8577              req->owner_nlportid != info->snd_portid))
8578                 return -ENOENT;
8579
8580         return cfg80211_stop_sched_scan_req(rdev, req, false);
8581 }
8582
8583 static int nl80211_start_radar_detection(struct sk_buff *skb,
8584                                          struct genl_info *info)
8585 {
8586         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8587         struct net_device *dev = info->user_ptr[1];
8588         struct wireless_dev *wdev = dev->ieee80211_ptr;
8589         struct wiphy *wiphy = wdev->wiphy;
8590         struct cfg80211_chan_def chandef;
8591         enum nl80211_dfs_regions dfs_region;
8592         unsigned int cac_time_ms;
8593         int err;
8594
8595         dfs_region = reg_get_dfs_region(wiphy);
8596         if (dfs_region == NL80211_DFS_UNSET)
8597                 return -EINVAL;
8598
8599         err = nl80211_parse_chandef(rdev, info, &chandef);
8600         if (err)
8601                 return err;
8602
8603         if (netif_carrier_ok(dev))
8604                 return -EBUSY;
8605
8606         if (wdev->cac_started)
8607                 return -EBUSY;
8608
8609         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8610         if (err < 0)
8611                 return err;
8612
8613         if (err == 0)
8614                 return -EINVAL;
8615
8616         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8617                 return -EINVAL;
8618
8619         /* CAC start is offloaded to HW and can't be started manually */
8620         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8621                 return -EOPNOTSUPP;
8622
8623         if (!rdev->ops->start_radar_detection)
8624                 return -EOPNOTSUPP;
8625
8626         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8627         if (WARN_ON(!cac_time_ms))
8628                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8629
8630         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8631         if (!err) {
8632                 wdev->chandef = chandef;
8633                 wdev->cac_started = true;
8634                 wdev->cac_start_time = jiffies;
8635                 wdev->cac_time_ms = cac_time_ms;
8636         }
8637         return err;
8638 }
8639
8640 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8641                                           struct genl_info *info)
8642 {
8643         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8644         struct net_device *dev = info->user_ptr[1];
8645         struct wireless_dev *wdev = dev->ieee80211_ptr;
8646         struct wiphy *wiphy = wdev->wiphy;
8647         struct cfg80211_chan_def chandef;
8648         enum nl80211_dfs_regions dfs_region;
8649         int err;
8650
8651         dfs_region = reg_get_dfs_region(wiphy);
8652         if (dfs_region == NL80211_DFS_UNSET) {
8653                 GENL_SET_ERR_MSG(info,
8654                                  "DFS Region is not set. Unexpected Radar indication");
8655                 return -EINVAL;
8656         }
8657
8658         err = nl80211_parse_chandef(rdev, info, &chandef);
8659         if (err) {
8660                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8661                 return err;
8662         }
8663
8664         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8665         if (err < 0) {
8666                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8667                 return err;
8668         }
8669
8670         if (err == 0) {
8671                 GENL_SET_ERR_MSG(info,
8672                                  "Unexpected Radar indication for chandef/iftype");
8673                 return -EINVAL;
8674         }
8675
8676         /* Do not process this notification if radar is already detected
8677          * by kernel on this channel, and return success.
8678          */
8679         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8680                 return 0;
8681
8682         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8683
8684         cfg80211_sched_dfs_chan_update(rdev);
8685
8686         rdev->radar_chandef = chandef;
8687
8688         /* Propagate this notification to other radios as well */
8689         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8690
8691         return 0;
8692 }
8693
8694 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8695 {
8696         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8697         struct net_device *dev = info->user_ptr[1];
8698         struct wireless_dev *wdev = dev->ieee80211_ptr;
8699         struct cfg80211_csa_settings params;
8700         /* csa_attrs is defined static to avoid waste of stack size - this
8701          * function is called under RTNL lock, so this should not be a problem.
8702          */
8703         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8704         int err;
8705         bool need_new_beacon = false;
8706         bool need_handle_dfs_flag = true;
8707         int len, i;
8708         u32 cs_count;
8709
8710         if (!rdev->ops->channel_switch ||
8711             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8712                 return -EOPNOTSUPP;
8713
8714         switch (dev->ieee80211_ptr->iftype) {
8715         case NL80211_IFTYPE_AP:
8716         case NL80211_IFTYPE_P2P_GO:
8717                 need_new_beacon = true;
8718                 /* For all modes except AP the handle_dfs flag needs to be
8719                  * supplied to tell the kernel that userspace will handle radar
8720                  * events when they happen. Otherwise a switch to a channel
8721                  * requiring DFS will be rejected.
8722                  */
8723                 need_handle_dfs_flag = false;
8724
8725                 /* useless if AP is not running */
8726                 if (!wdev->beacon_interval)
8727                         return -ENOTCONN;
8728                 break;
8729         case NL80211_IFTYPE_ADHOC:
8730                 if (!wdev->ssid_len)
8731                         return -ENOTCONN;
8732                 break;
8733         case NL80211_IFTYPE_MESH_POINT:
8734                 if (!wdev->mesh_id_len)
8735                         return -ENOTCONN;
8736                 break;
8737         default:
8738                 return -EOPNOTSUPP;
8739         }
8740
8741         memset(&params, 0, sizeof(params));
8742         params.beacon_csa.ftm_responder = -1;
8743
8744         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8745             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8746                 return -EINVAL;
8747
8748         /* only important for AP, IBSS and mesh create IEs internally */
8749         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8750                 return -EINVAL;
8751
8752         /* Even though the attribute is u32, the specification says
8753          * u8, so let's make sure we don't overflow.
8754          */
8755         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8756         if (cs_count > 255)
8757                 return -EINVAL;
8758
8759         params.count = cs_count;
8760
8761         if (!need_new_beacon)
8762                 goto skip_beacons;
8763
8764         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8765         if (err)
8766                 return err;
8767
8768         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8769                                           info->attrs[NL80211_ATTR_CSA_IES],
8770                                           nl80211_policy, info->extack);
8771         if (err)
8772                 return err;
8773
8774         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8775         if (err)
8776                 return err;
8777
8778         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8779                 return -EINVAL;
8780
8781         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8782         if (!len || (len % sizeof(u16)))
8783                 return -EINVAL;
8784
8785         params.n_counter_offsets_beacon = len / sizeof(u16);
8786         if (rdev->wiphy.max_num_csa_counters &&
8787             (params.n_counter_offsets_beacon >
8788              rdev->wiphy.max_num_csa_counters))
8789                 return -EINVAL;
8790
8791         params.counter_offsets_beacon =
8792                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8793
8794         /* sanity checks - counters should fit and be the same */
8795         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8796                 u16 offset = params.counter_offsets_beacon[i];
8797
8798                 if (offset >= params.beacon_csa.tail_len)
8799                         return -EINVAL;
8800
8801                 if (params.beacon_csa.tail[offset] != params.count)
8802                         return -EINVAL;
8803         }
8804
8805         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8806                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8807                 if (!len || (len % sizeof(u16)))
8808                         return -EINVAL;
8809
8810                 params.n_counter_offsets_presp = len / sizeof(u16);
8811                 if (rdev->wiphy.max_num_csa_counters &&
8812                     (params.n_counter_offsets_presp >
8813                      rdev->wiphy.max_num_csa_counters))
8814                         return -EINVAL;
8815
8816                 params.counter_offsets_presp =
8817                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8818
8819                 /* sanity checks - counters should fit and be the same */
8820                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8821                         u16 offset = params.counter_offsets_presp[i];
8822
8823                         if (offset >= params.beacon_csa.probe_resp_len)
8824                                 return -EINVAL;
8825
8826                         if (params.beacon_csa.probe_resp[offset] !=
8827                             params.count)
8828                                 return -EINVAL;
8829                 }
8830         }
8831
8832 skip_beacons:
8833         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8834         if (err)
8835                 return err;
8836
8837         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8838                                            wdev->iftype))
8839                 return -EINVAL;
8840
8841         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8842                                             &params.chandef,
8843                                             wdev->iftype);
8844         if (err < 0)
8845                 return err;
8846
8847         if (err > 0) {
8848                 params.radar_required = true;
8849                 if (need_handle_dfs_flag &&
8850                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8851                         return -EINVAL;
8852                 }
8853         }
8854
8855         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8856                 params.block_tx = true;
8857
8858         wdev_lock(wdev);
8859         err = rdev_channel_switch(rdev, dev, &params);
8860         wdev_unlock(wdev);
8861
8862         return err;
8863 }
8864
8865 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8866                             u32 seq, int flags,
8867                             struct cfg80211_registered_device *rdev,
8868                             struct wireless_dev *wdev,
8869                             struct cfg80211_internal_bss *intbss)
8870 {
8871         struct cfg80211_bss *res = &intbss->pub;
8872         const struct cfg80211_bss_ies *ies;
8873         void *hdr;
8874         struct nlattr *bss;
8875
8876         ASSERT_WDEV_LOCK(wdev);
8877
8878         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8879                              NL80211_CMD_NEW_SCAN_RESULTS);
8880         if (!hdr)
8881                 return -1;
8882
8883         genl_dump_check_consistent(cb, hdr);
8884
8885         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8886                 goto nla_put_failure;
8887         if (wdev->netdev &&
8888             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8889                 goto nla_put_failure;
8890         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8891                               NL80211_ATTR_PAD))
8892                 goto nla_put_failure;
8893
8894         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8895         if (!bss)
8896                 goto nla_put_failure;
8897         if ((!is_zero_ether_addr(res->bssid) &&
8898              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8899                 goto nla_put_failure;
8900
8901         rcu_read_lock();
8902         /* indicate whether we have probe response data or not */
8903         if (rcu_access_pointer(res->proberesp_ies) &&
8904             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8905                 goto fail_unlock_rcu;
8906
8907         /* this pointer prefers to be pointed to probe response data
8908          * but is always valid
8909          */
8910         ies = rcu_dereference(res->ies);
8911         if (ies) {
8912                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8913                                       NL80211_BSS_PAD))
8914                         goto fail_unlock_rcu;
8915                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8916                                         ies->len, ies->data))
8917                         goto fail_unlock_rcu;
8918         }
8919
8920         /* and this pointer is always (unless driver didn't know) beacon data */
8921         ies = rcu_dereference(res->beacon_ies);
8922         if (ies && ies->from_beacon) {
8923                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8924                                       NL80211_BSS_PAD))
8925                         goto fail_unlock_rcu;
8926                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8927                                         ies->len, ies->data))
8928                         goto fail_unlock_rcu;
8929         }
8930         rcu_read_unlock();
8931
8932         if (res->beacon_interval &&
8933             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8934                 goto nla_put_failure;
8935         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8936             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8937             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
8938                         res->channel->freq_offset) ||
8939             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8940             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8941                         jiffies_to_msecs(jiffies - intbss->ts)))
8942                 goto nla_put_failure;
8943
8944         if (intbss->parent_tsf &&
8945             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8946                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8947              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8948                      intbss->parent_bssid)))
8949                 goto nla_put_failure;
8950
8951         if (intbss->ts_boottime &&
8952             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8953                               intbss->ts_boottime, NL80211_BSS_PAD))
8954                 goto nla_put_failure;
8955
8956         if (!nl80211_put_signal(msg, intbss->pub.chains,
8957                                 intbss->pub.chain_signal,
8958                                 NL80211_BSS_CHAIN_SIGNAL))
8959                 goto nla_put_failure;
8960
8961         switch (rdev->wiphy.signal_type) {
8962         case CFG80211_SIGNAL_TYPE_MBM:
8963                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8964                         goto nla_put_failure;
8965                 break;
8966         case CFG80211_SIGNAL_TYPE_UNSPEC:
8967                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8968                         goto nla_put_failure;
8969                 break;
8970         default:
8971                 break;
8972         }
8973
8974         switch (wdev->iftype) {
8975         case NL80211_IFTYPE_P2P_CLIENT:
8976         case NL80211_IFTYPE_STATION:
8977                 if (intbss == wdev->current_bss &&
8978                     nla_put_u32(msg, NL80211_BSS_STATUS,
8979                                 NL80211_BSS_STATUS_ASSOCIATED))
8980                         goto nla_put_failure;
8981                 break;
8982         case NL80211_IFTYPE_ADHOC:
8983                 if (intbss == wdev->current_bss &&
8984                     nla_put_u32(msg, NL80211_BSS_STATUS,
8985                                 NL80211_BSS_STATUS_IBSS_JOINED))
8986                         goto nla_put_failure;
8987                 break;
8988         default:
8989                 break;
8990         }
8991
8992         nla_nest_end(msg, bss);
8993
8994         genlmsg_end(msg, hdr);
8995         return 0;
8996
8997  fail_unlock_rcu:
8998         rcu_read_unlock();
8999  nla_put_failure:
9000         genlmsg_cancel(msg, hdr);
9001         return -EMSGSIZE;
9002 }
9003
9004 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9005 {
9006         struct cfg80211_registered_device *rdev;
9007         struct cfg80211_internal_bss *scan;
9008         struct wireless_dev *wdev;
9009         int start = cb->args[2], idx = 0;
9010         int err;
9011
9012         rtnl_lock();
9013         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9014         if (err) {
9015                 rtnl_unlock();
9016                 return err;
9017         }
9018
9019         wdev_lock(wdev);
9020         spin_lock_bh(&rdev->bss_lock);
9021
9022         /*
9023          * dump_scan will be called multiple times to break up the scan results
9024          * into multiple messages.  It is unlikely that any more bss-es will be
9025          * expired after the first call, so only call only call this on the
9026          * first dump_scan invocation.
9027          */
9028         if (start == 0)
9029                 cfg80211_bss_expire(rdev);
9030
9031         cb->seq = rdev->bss_generation;
9032
9033         list_for_each_entry(scan, &rdev->bss_list, list) {
9034                 if (++idx <= start)
9035                         continue;
9036                 if (nl80211_send_bss(skb, cb,
9037                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9038                                 rdev, wdev, scan) < 0) {
9039                         idx--;
9040                         break;
9041                 }
9042         }
9043
9044         spin_unlock_bh(&rdev->bss_lock);
9045         wdev_unlock(wdev);
9046
9047         cb->args[2] = idx;
9048         rtnl_unlock();
9049
9050         return skb->len;
9051 }
9052
9053 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9054                                int flags, struct net_device *dev,
9055                                bool allow_radio_stats,
9056                                struct survey_info *survey)
9057 {
9058         void *hdr;
9059         struct nlattr *infoattr;
9060
9061         /* skip radio stats if userspace didn't request them */
9062         if (!survey->channel && !allow_radio_stats)
9063                 return 0;
9064
9065         hdr = nl80211hdr_put(msg, portid, seq, flags,
9066                              NL80211_CMD_NEW_SURVEY_RESULTS);
9067         if (!hdr)
9068                 return -ENOMEM;
9069
9070         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9071                 goto nla_put_failure;
9072
9073         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9074         if (!infoattr)
9075                 goto nla_put_failure;
9076
9077         if (survey->channel &&
9078             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9079                         survey->channel->center_freq))
9080                 goto nla_put_failure;
9081
9082         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9083             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9084                 goto nla_put_failure;
9085         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9086             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9087                 goto nla_put_failure;
9088         if ((survey->filled & SURVEY_INFO_TIME) &&
9089             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9090                         survey->time, NL80211_SURVEY_INFO_PAD))
9091                 goto nla_put_failure;
9092         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9093             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9094                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9095                 goto nla_put_failure;
9096         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9097             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9098                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9099                 goto nla_put_failure;
9100         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9101             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9102                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9103                 goto nla_put_failure;
9104         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9105             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9106                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9107                 goto nla_put_failure;
9108         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9109             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9110                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9111                 goto nla_put_failure;
9112         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9113             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9114                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9115                 goto nla_put_failure;
9116
9117         nla_nest_end(msg, infoattr);
9118
9119         genlmsg_end(msg, hdr);
9120         return 0;
9121
9122  nla_put_failure:
9123         genlmsg_cancel(msg, hdr);
9124         return -EMSGSIZE;
9125 }
9126
9127 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9128 {
9129         struct nlattr **attrbuf;
9130         struct survey_info survey;
9131         struct cfg80211_registered_device *rdev;
9132         struct wireless_dev *wdev;
9133         int survey_idx = cb->args[2];
9134         int res;
9135         bool radio_stats;
9136
9137         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9138         if (!attrbuf)
9139                 return -ENOMEM;
9140
9141         rtnl_lock();
9142         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9143         if (res)
9144                 goto out_err;
9145
9146         /* prepare_wdev_dump parsed the attributes */
9147         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9148
9149         if (!wdev->netdev) {
9150                 res = -EINVAL;
9151                 goto out_err;
9152         }
9153
9154         if (!rdev->ops->dump_survey) {
9155                 res = -EOPNOTSUPP;
9156                 goto out_err;
9157         }
9158
9159         while (1) {
9160                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9161                 if (res == -ENOENT)
9162                         break;
9163                 if (res)
9164                         goto out_err;
9165
9166                 /* don't send disabled channels, but do send non-channel data */
9167                 if (survey.channel &&
9168                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9169                         survey_idx++;
9170                         continue;
9171                 }
9172
9173                 if (nl80211_send_survey(skb,
9174                                 NETLINK_CB(cb->skb).portid,
9175                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9176                                 wdev->netdev, radio_stats, &survey) < 0)
9177                         goto out;
9178                 survey_idx++;
9179         }
9180
9181  out:
9182         cb->args[2] = survey_idx;
9183         res = skb->len;
9184  out_err:
9185         kfree(attrbuf);
9186         rtnl_unlock();
9187         return res;
9188 }
9189
9190 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9191 {
9192         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9193                                   NL80211_WPA_VERSION_2 |
9194                                   NL80211_WPA_VERSION_3));
9195 }
9196
9197 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9198 {
9199         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9200         struct net_device *dev = info->user_ptr[1];
9201         struct ieee80211_channel *chan;
9202         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9203         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9204         enum nl80211_auth_type auth_type;
9205         struct key_parse key;
9206         bool local_state_change;
9207         u32 freq;
9208
9209         if (!info->attrs[NL80211_ATTR_MAC])
9210                 return -EINVAL;
9211
9212         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9213                 return -EINVAL;
9214
9215         if (!info->attrs[NL80211_ATTR_SSID])
9216                 return -EINVAL;
9217
9218         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9219                 return -EINVAL;
9220
9221         err = nl80211_parse_key(info, &key);
9222         if (err)
9223                 return err;
9224
9225         if (key.idx >= 0) {
9226                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9227                         return -EINVAL;
9228                 if (!key.p.key || !key.p.key_len)
9229                         return -EINVAL;
9230                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9231                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9232                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9233                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9234                         return -EINVAL;
9235                 if (key.idx > 3)
9236                         return -EINVAL;
9237         } else {
9238                 key.p.key_len = 0;
9239                 key.p.key = NULL;
9240         }
9241
9242         if (key.idx >= 0) {
9243                 int i;
9244                 bool ok = false;
9245
9246                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9247                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9248                                 ok = true;
9249                                 break;
9250                         }
9251                 }
9252                 if (!ok)
9253                         return -EINVAL;
9254         }
9255
9256         if (!rdev->ops->auth)
9257                 return -EOPNOTSUPP;
9258
9259         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9260             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9261                 return -EOPNOTSUPP;
9262
9263         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9264         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9265         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9266                 freq +=
9267                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9268
9269         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9270         if (!chan)
9271                 return -EINVAL;
9272
9273         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9274         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9275
9276         if (info->attrs[NL80211_ATTR_IE]) {
9277                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9278                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9279         }
9280
9281         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9282         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9283                 return -EINVAL;
9284
9285         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9286              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9287              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9288              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9289             !info->attrs[NL80211_ATTR_AUTH_DATA])
9290                 return -EINVAL;
9291
9292         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9293                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9294                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9295                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9296                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9297                         return -EINVAL;
9298                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9299                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9300                 /* need to include at least Auth Transaction and Status Code */
9301                 if (auth_data_len < 4)
9302                         return -EINVAL;
9303         }
9304
9305         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9306
9307         /*
9308          * Since we no longer track auth state, ignore
9309          * requests to only change local state.
9310          */
9311         if (local_state_change)
9312                 return 0;
9313
9314         wdev_lock(dev->ieee80211_ptr);
9315         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9316                                  ssid, ssid_len, ie, ie_len,
9317                                  key.p.key, key.p.key_len, key.idx,
9318                                  auth_data, auth_data_len);
9319         wdev_unlock(dev->ieee80211_ptr);
9320         return err;
9321 }
9322
9323 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9324                                      struct genl_info *info)
9325 {
9326         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9327                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9328                 return -EINVAL;
9329         }
9330
9331         if (!rdev->ops->tx_control_port ||
9332             !wiphy_ext_feature_isset(&rdev->wiphy,
9333                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9334                 return -EOPNOTSUPP;
9335
9336         return 0;
9337 }
9338
9339 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9340                                    struct genl_info *info,
9341                                    struct cfg80211_crypto_settings *settings,
9342                                    int cipher_limit)
9343 {
9344         memset(settings, 0, sizeof(*settings));
9345
9346         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9347
9348         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9349                 u16 proto;
9350
9351                 proto = nla_get_u16(
9352                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9353                 settings->control_port_ethertype = cpu_to_be16(proto);
9354                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9355                     proto != ETH_P_PAE)
9356                         return -EINVAL;
9357                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9358                         settings->control_port_no_encrypt = true;
9359         } else
9360                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9361
9362         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9363                 int r = validate_pae_over_nl80211(rdev, info);
9364
9365                 if (r < 0)
9366                         return r;
9367
9368                 settings->control_port_over_nl80211 = true;
9369
9370                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9371                         settings->control_port_no_preauth = true;
9372         }
9373
9374         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9375                 void *data;
9376                 int len, i;
9377
9378                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9379                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9380                 settings->n_ciphers_pairwise = len / sizeof(u32);
9381
9382                 if (len % sizeof(u32))
9383                         return -EINVAL;
9384
9385                 if (settings->n_ciphers_pairwise > cipher_limit)
9386                         return -EINVAL;
9387
9388                 memcpy(settings->ciphers_pairwise, data, len);
9389
9390                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9391                         if (!cfg80211_supported_cipher_suite(
9392                                         &rdev->wiphy,
9393                                         settings->ciphers_pairwise[i]))
9394                                 return -EINVAL;
9395         }
9396
9397         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9398                 settings->cipher_group =
9399                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9400                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9401                                                      settings->cipher_group))
9402                         return -EINVAL;
9403         }
9404
9405         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9406                 settings->wpa_versions =
9407                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9408                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9409                         return -EINVAL;
9410         }
9411
9412         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9413                 void *data;
9414                 int len;
9415
9416                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9417                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9418                 settings->n_akm_suites = len / sizeof(u32);
9419
9420                 if (len % sizeof(u32))
9421                         return -EINVAL;
9422
9423                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9424                         return -EINVAL;
9425
9426                 memcpy(settings->akm_suites, data, len);
9427         }
9428
9429         if (info->attrs[NL80211_ATTR_PMK]) {
9430                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9431                         return -EINVAL;
9432                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9433                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9434                         return -EINVAL;
9435                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9436         }
9437
9438         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9439                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9440                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9441                         return -EINVAL;
9442                 settings->sae_pwd =
9443                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9444                 settings->sae_pwd_len =
9445                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9446         }
9447
9448         return 0;
9449 }
9450
9451 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9452 {
9453         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9454         struct net_device *dev = info->user_ptr[1];
9455         struct ieee80211_channel *chan;
9456         struct cfg80211_assoc_request req = {};
9457         const u8 *bssid, *ssid;
9458         int err, ssid_len = 0;
9459         u32 freq;
9460
9461         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9462             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9463                 return -EPERM;
9464
9465         if (!info->attrs[NL80211_ATTR_MAC] ||
9466             !info->attrs[NL80211_ATTR_SSID] ||
9467             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9468                 return -EINVAL;
9469
9470         if (!rdev->ops->assoc)
9471                 return -EOPNOTSUPP;
9472
9473         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9474             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9475                 return -EOPNOTSUPP;
9476
9477         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9478
9479         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9480         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9481                 freq +=
9482                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9483         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9484         if (!chan)
9485                 return -EINVAL;
9486
9487         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9488         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9489
9490         if (info->attrs[NL80211_ATTR_IE]) {
9491                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9492                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9493         }
9494
9495         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9496                 enum nl80211_mfp mfp =
9497                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9498                 if (mfp == NL80211_MFP_REQUIRED)
9499                         req.use_mfp = true;
9500                 else if (mfp != NL80211_MFP_NO)
9501                         return -EINVAL;
9502         }
9503
9504         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9505                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9506
9507         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9508                 req.flags |= ASSOC_REQ_DISABLE_HT;
9509
9510         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9511                 memcpy(&req.ht_capa_mask,
9512                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9513                        sizeof(req.ht_capa_mask));
9514
9515         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9516                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9517                         return -EINVAL;
9518                 memcpy(&req.ht_capa,
9519                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9520                        sizeof(req.ht_capa));
9521         }
9522
9523         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9524                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9525
9526         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9527                 memcpy(&req.vht_capa_mask,
9528                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9529                        sizeof(req.vht_capa_mask));
9530
9531         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9532                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9533                         return -EINVAL;
9534                 memcpy(&req.vht_capa,
9535                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9536                        sizeof(req.vht_capa));
9537         }
9538
9539         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9540                 if (!((rdev->wiphy.features &
9541                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9542                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9543                     !wiphy_ext_feature_isset(&rdev->wiphy,
9544                                              NL80211_EXT_FEATURE_RRM))
9545                         return -EINVAL;
9546                 req.flags |= ASSOC_REQ_USE_RRM;
9547         }
9548
9549         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9550                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9551                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9552                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9553                         return -EINVAL;
9554                 req.fils_nonces =
9555                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9556         }
9557
9558         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9559         if (!err) {
9560                 wdev_lock(dev->ieee80211_ptr);
9561
9562                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9563                                           ssid, ssid_len, &req);
9564
9565                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9566                         dev->ieee80211_ptr->conn_owner_nlportid =
9567                                 info->snd_portid;
9568                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9569                                bssid, ETH_ALEN);
9570                 }
9571
9572                 wdev_unlock(dev->ieee80211_ptr);
9573         }
9574
9575         return err;
9576 }
9577
9578 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9579 {
9580         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9581         struct net_device *dev = info->user_ptr[1];
9582         const u8 *ie = NULL, *bssid;
9583         int ie_len = 0, err;
9584         u16 reason_code;
9585         bool local_state_change;
9586
9587         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9588             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9589                 return -EPERM;
9590
9591         if (!info->attrs[NL80211_ATTR_MAC])
9592                 return -EINVAL;
9593
9594         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9595                 return -EINVAL;
9596
9597         if (!rdev->ops->deauth)
9598                 return -EOPNOTSUPP;
9599
9600         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9601             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9602                 return -EOPNOTSUPP;
9603
9604         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9605
9606         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9607         if (reason_code == 0) {
9608                 /* Reason Code 0 is reserved */
9609                 return -EINVAL;
9610         }
9611
9612         if (info->attrs[NL80211_ATTR_IE]) {
9613                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9614                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9615         }
9616
9617         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9618
9619         wdev_lock(dev->ieee80211_ptr);
9620         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9621                                    local_state_change);
9622         wdev_unlock(dev->ieee80211_ptr);
9623         return err;
9624 }
9625
9626 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9627 {
9628         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9629         struct net_device *dev = info->user_ptr[1];
9630         const u8 *ie = NULL, *bssid;
9631         int ie_len = 0, err;
9632         u16 reason_code;
9633         bool local_state_change;
9634
9635         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9636             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9637                 return -EPERM;
9638
9639         if (!info->attrs[NL80211_ATTR_MAC])
9640                 return -EINVAL;
9641
9642         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9643                 return -EINVAL;
9644
9645         if (!rdev->ops->disassoc)
9646                 return -EOPNOTSUPP;
9647
9648         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9649             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9650                 return -EOPNOTSUPP;
9651
9652         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9653
9654         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9655         if (reason_code == 0) {
9656                 /* Reason Code 0 is reserved */
9657                 return -EINVAL;
9658         }
9659
9660         if (info->attrs[NL80211_ATTR_IE]) {
9661                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9662                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9663         }
9664
9665         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9666
9667         wdev_lock(dev->ieee80211_ptr);
9668         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9669                                      local_state_change);
9670         wdev_unlock(dev->ieee80211_ptr);
9671         return err;
9672 }
9673
9674 static bool
9675 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9676                          int mcast_rate[NUM_NL80211_BANDS],
9677                          int rateval)
9678 {
9679         struct wiphy *wiphy = &rdev->wiphy;
9680         bool found = false;
9681         int band, i;
9682
9683         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9684                 struct ieee80211_supported_band *sband;
9685
9686                 sband = wiphy->bands[band];
9687                 if (!sband)
9688                         continue;
9689
9690                 for (i = 0; i < sband->n_bitrates; i++) {
9691                         if (sband->bitrates[i].bitrate == rateval) {
9692                                 mcast_rate[band] = i + 1;
9693                                 found = true;
9694                                 break;
9695                         }
9696                 }
9697         }
9698
9699         return found;
9700 }
9701
9702 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9703 {
9704         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9705         struct net_device *dev = info->user_ptr[1];
9706         struct cfg80211_ibss_params ibss;
9707         struct wiphy *wiphy;
9708         struct cfg80211_cached_keys *connkeys = NULL;
9709         int err;
9710
9711         memset(&ibss, 0, sizeof(ibss));
9712
9713         if (!info->attrs[NL80211_ATTR_SSID] ||
9714             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9715                 return -EINVAL;
9716
9717         ibss.beacon_interval = 100;
9718
9719         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9720                 ibss.beacon_interval =
9721                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9722
9723         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9724                                            ibss.beacon_interval);
9725         if (err)
9726                 return err;
9727
9728         if (!rdev->ops->join_ibss)
9729                 return -EOPNOTSUPP;
9730
9731         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9732                 return -EOPNOTSUPP;
9733
9734         wiphy = &rdev->wiphy;
9735
9736         if (info->attrs[NL80211_ATTR_MAC]) {
9737                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9738
9739                 if (!is_valid_ether_addr(ibss.bssid))
9740                         return -EINVAL;
9741         }
9742         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9743         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9744
9745         if (info->attrs[NL80211_ATTR_IE]) {
9746                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9747                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9748         }
9749
9750         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9751         if (err)
9752                 return err;
9753
9754         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9755                                      NL80211_IFTYPE_ADHOC))
9756                 return -EINVAL;
9757
9758         switch (ibss.chandef.width) {
9759         case NL80211_CHAN_WIDTH_5:
9760         case NL80211_CHAN_WIDTH_10:
9761         case NL80211_CHAN_WIDTH_20_NOHT:
9762                 break;
9763         case NL80211_CHAN_WIDTH_20:
9764         case NL80211_CHAN_WIDTH_40:
9765                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9766                         return -EINVAL;
9767                 break;
9768         case NL80211_CHAN_WIDTH_80:
9769         case NL80211_CHAN_WIDTH_80P80:
9770         case NL80211_CHAN_WIDTH_160:
9771                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9772                         return -EINVAL;
9773                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9774                                              NL80211_EXT_FEATURE_VHT_IBSS))
9775                         return -EINVAL;
9776                 break;
9777         default:
9778                 return -EINVAL;
9779         }
9780
9781         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9782         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9783
9784         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9785                 u8 *rates =
9786                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9787                 int n_rates =
9788                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9789                 struct ieee80211_supported_band *sband =
9790                         wiphy->bands[ibss.chandef.chan->band];
9791
9792                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9793                                              &ibss.basic_rates);
9794                 if (err)
9795                         return err;
9796         }
9797
9798         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9799                 memcpy(&ibss.ht_capa_mask,
9800                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9801                        sizeof(ibss.ht_capa_mask));
9802
9803         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9804                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9805                         return -EINVAL;
9806                 memcpy(&ibss.ht_capa,
9807                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9808                        sizeof(ibss.ht_capa));
9809         }
9810
9811         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9812             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9813                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9814                 return -EINVAL;
9815
9816         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9817                 bool no_ht = false;
9818
9819                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9820                 if (IS_ERR(connkeys))
9821                         return PTR_ERR(connkeys);
9822
9823                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9824                     no_ht) {
9825                         kzfree(connkeys);
9826                         return -EINVAL;
9827                 }
9828         }
9829
9830         ibss.control_port =
9831                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9832
9833         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9834                 int r = validate_pae_over_nl80211(rdev, info);
9835
9836                 if (r < 0) {
9837                         kzfree(connkeys);
9838                         return r;
9839                 }
9840
9841                 ibss.control_port_over_nl80211 = true;
9842         }
9843
9844         ibss.userspace_handles_dfs =
9845                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9846
9847         wdev_lock(dev->ieee80211_ptr);
9848         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9849         if (err)
9850                 kzfree(connkeys);
9851         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9852                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9853         wdev_unlock(dev->ieee80211_ptr);
9854
9855         return err;
9856 }
9857
9858 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9859 {
9860         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9861         struct net_device *dev = info->user_ptr[1];
9862
9863         if (!rdev->ops->leave_ibss)
9864                 return -EOPNOTSUPP;
9865
9866         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9867                 return -EOPNOTSUPP;
9868
9869         return cfg80211_leave_ibss(rdev, dev, false);
9870 }
9871
9872 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9873 {
9874         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9875         struct net_device *dev = info->user_ptr[1];
9876         int mcast_rate[NUM_NL80211_BANDS];
9877         u32 nla_rate;
9878         int err;
9879
9880         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9881             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9882             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9883                 return -EOPNOTSUPP;
9884
9885         if (!rdev->ops->set_mcast_rate)
9886                 return -EOPNOTSUPP;
9887
9888         memset(mcast_rate, 0, sizeof(mcast_rate));
9889
9890         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9891                 return -EINVAL;
9892
9893         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9894         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9895                 return -EINVAL;
9896
9897         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9898
9899         return err;
9900 }
9901
9902 static struct sk_buff *
9903 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9904                             struct wireless_dev *wdev, int approxlen,
9905                             u32 portid, u32 seq, enum nl80211_commands cmd,
9906                             enum nl80211_attrs attr,
9907                             const struct nl80211_vendor_cmd_info *info,
9908                             gfp_t gfp)
9909 {
9910         struct sk_buff *skb;
9911         void *hdr;
9912         struct nlattr *data;
9913
9914         skb = nlmsg_new(approxlen + 100, gfp);
9915         if (!skb)
9916                 return NULL;
9917
9918         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9919         if (!hdr) {
9920                 kfree_skb(skb);
9921                 return NULL;
9922         }
9923
9924         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9925                 goto nla_put_failure;
9926
9927         if (info) {
9928                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9929                                 info->vendor_id))
9930                         goto nla_put_failure;
9931                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9932                                 info->subcmd))
9933                         goto nla_put_failure;
9934         }
9935
9936         if (wdev) {
9937                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9938                                       wdev_id(wdev), NL80211_ATTR_PAD))
9939                         goto nla_put_failure;
9940                 if (wdev->netdev &&
9941                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9942                                 wdev->netdev->ifindex))
9943                         goto nla_put_failure;
9944         }
9945
9946         data = nla_nest_start_noflag(skb, attr);
9947         if (!data)
9948                 goto nla_put_failure;
9949
9950         ((void **)skb->cb)[0] = rdev;
9951         ((void **)skb->cb)[1] = hdr;
9952         ((void **)skb->cb)[2] = data;
9953
9954         return skb;
9955
9956  nla_put_failure:
9957         kfree_skb(skb);
9958         return NULL;
9959 }
9960
9961 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9962                                            struct wireless_dev *wdev,
9963                                            enum nl80211_commands cmd,
9964                                            enum nl80211_attrs attr,
9965                                            unsigned int portid,
9966                                            int vendor_event_idx,
9967                                            int approxlen, gfp_t gfp)
9968 {
9969         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9970         const struct nl80211_vendor_cmd_info *info;
9971
9972         switch (cmd) {
9973         case NL80211_CMD_TESTMODE:
9974                 if (WARN_ON(vendor_event_idx != -1))
9975                         return NULL;
9976                 info = NULL;
9977                 break;
9978         case NL80211_CMD_VENDOR:
9979                 if (WARN_ON(vendor_event_idx < 0 ||
9980                             vendor_event_idx >= wiphy->n_vendor_events))
9981                         return NULL;
9982                 info = &wiphy->vendor_events[vendor_event_idx];
9983                 break;
9984         default:
9985                 WARN_ON(1);
9986                 return NULL;
9987         }
9988
9989         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9990                                            cmd, attr, info, gfp);
9991 }
9992 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9993
9994 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9995 {
9996         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9997         void *hdr = ((void **)skb->cb)[1];
9998         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9999         struct nlattr *data = ((void **)skb->cb)[2];
10000         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10001
10002         /* clear CB data for netlink core to own from now on */
10003         memset(skb->cb, 0, sizeof(skb->cb));
10004
10005         nla_nest_end(skb, data);
10006         genlmsg_end(skb, hdr);
10007
10008         if (nlhdr->nlmsg_pid) {
10009                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10010                                 nlhdr->nlmsg_pid);
10011         } else {
10012                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10013                         mcgrp = NL80211_MCGRP_VENDOR;
10014
10015                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10016                                         skb, 0, mcgrp, gfp);
10017         }
10018 }
10019 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10020
10021 #ifdef CONFIG_NL80211_TESTMODE
10022 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10023 {
10024         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10025         struct wireless_dev *wdev =
10026                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10027         int err;
10028
10029         if (!rdev->ops->testmode_cmd)
10030                 return -EOPNOTSUPP;
10031
10032         if (IS_ERR(wdev)) {
10033                 err = PTR_ERR(wdev);
10034                 if (err != -EINVAL)
10035                         return err;
10036                 wdev = NULL;
10037         } else if (wdev->wiphy != &rdev->wiphy) {
10038                 return -EINVAL;
10039         }
10040
10041         if (!info->attrs[NL80211_ATTR_TESTDATA])
10042                 return -EINVAL;
10043
10044         rdev->cur_cmd_info = info;
10045         err = rdev_testmode_cmd(rdev, wdev,
10046                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10047                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10048         rdev->cur_cmd_info = NULL;
10049
10050         return err;
10051 }
10052
10053 static int nl80211_testmode_dump(struct sk_buff *skb,
10054                                  struct netlink_callback *cb)
10055 {
10056         struct cfg80211_registered_device *rdev;
10057         struct nlattr **attrbuf = NULL;
10058         int err;
10059         long phy_idx;
10060         void *data = NULL;
10061         int data_len = 0;
10062
10063         rtnl_lock();
10064
10065         if (cb->args[0]) {
10066                 /*
10067                  * 0 is a valid index, but not valid for args[0],
10068                  * so we need to offset by 1.
10069                  */
10070                 phy_idx = cb->args[0] - 1;
10071
10072                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10073                 if (!rdev) {
10074                         err = -ENOENT;
10075                         goto out_err;
10076                 }
10077         } else {
10078                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10079                                   GFP_KERNEL);
10080                 if (!attrbuf) {
10081                         err = -ENOMEM;
10082                         goto out_err;
10083                 }
10084
10085                 err = nlmsg_parse_deprecated(cb->nlh,
10086                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10087                                              attrbuf, nl80211_fam.maxattr,
10088                                              nl80211_policy, NULL);
10089                 if (err)
10090                         goto out_err;
10091
10092                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10093                 if (IS_ERR(rdev)) {
10094                         err = PTR_ERR(rdev);
10095                         goto out_err;
10096                 }
10097                 phy_idx = rdev->wiphy_idx;
10098
10099                 if (attrbuf[NL80211_ATTR_TESTDATA])
10100                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10101         }
10102
10103         if (cb->args[1]) {
10104                 data = nla_data((void *)cb->args[1]);
10105                 data_len = nla_len((void *)cb->args[1]);
10106         }
10107
10108         if (!rdev->ops->testmode_dump) {
10109                 err = -EOPNOTSUPP;
10110                 goto out_err;
10111         }
10112
10113         while (1) {
10114                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10115                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10116                                            NL80211_CMD_TESTMODE);
10117                 struct nlattr *tmdata;
10118
10119                 if (!hdr)
10120                         break;
10121
10122                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10123                         genlmsg_cancel(skb, hdr);
10124                         break;
10125                 }
10126
10127                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10128                 if (!tmdata) {
10129                         genlmsg_cancel(skb, hdr);
10130                         break;
10131                 }
10132                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10133                 nla_nest_end(skb, tmdata);
10134
10135                 if (err == -ENOBUFS || err == -ENOENT) {
10136                         genlmsg_cancel(skb, hdr);
10137                         break;
10138                 } else if (err) {
10139                         genlmsg_cancel(skb, hdr);
10140                         goto out_err;
10141                 }
10142
10143                 genlmsg_end(skb, hdr);
10144         }
10145
10146         err = skb->len;
10147         /* see above */
10148         cb->args[0] = phy_idx + 1;
10149  out_err:
10150         kfree(attrbuf);
10151         rtnl_unlock();
10152         return err;
10153 }
10154 #endif
10155
10156 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10157 {
10158         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10159         struct net_device *dev = info->user_ptr[1];
10160         struct cfg80211_connect_params connect;
10161         struct wiphy *wiphy;
10162         struct cfg80211_cached_keys *connkeys = NULL;
10163         u32 freq = 0;
10164         int err;
10165
10166         memset(&connect, 0, sizeof(connect));
10167
10168         if (!info->attrs[NL80211_ATTR_SSID] ||
10169             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10170                 return -EINVAL;
10171
10172         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10173                 connect.auth_type =
10174                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10175                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10176                                              NL80211_CMD_CONNECT))
10177                         return -EINVAL;
10178         } else
10179                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10180
10181         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10182
10183         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10184             !wiphy_ext_feature_isset(&rdev->wiphy,
10185                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10186                 return -EINVAL;
10187         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10188
10189         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10190                                       NL80211_MAX_NR_CIPHER_SUITES);
10191         if (err)
10192                 return err;
10193
10194         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10195             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10196                 return -EOPNOTSUPP;
10197
10198         wiphy = &rdev->wiphy;
10199
10200         connect.bg_scan_period = -1;
10201         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10202                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10203                 connect.bg_scan_period =
10204                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10205         }
10206
10207         if (info->attrs[NL80211_ATTR_MAC])
10208                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10209         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10210                 connect.bssid_hint =
10211                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10212         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10213         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10214
10215         if (info->attrs[NL80211_ATTR_IE]) {
10216                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10217                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10218         }
10219
10220         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10221                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10222                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10223                     !wiphy_ext_feature_isset(&rdev->wiphy,
10224                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10225                         return -EOPNOTSUPP;
10226         } else {
10227                 connect.mfp = NL80211_MFP_NO;
10228         }
10229
10230         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10231                 connect.prev_bssid =
10232                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10233
10234         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10235                 freq = MHZ_TO_KHZ(nla_get_u32(
10236                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10237         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10238                 freq +=
10239                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10240
10241         if (freq) {
10242                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10243                 if (!connect.channel)
10244                         return -EINVAL;
10245         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10246                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10247                 freq = MHZ_TO_KHZ(freq);
10248                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10249                 if (!connect.channel_hint)
10250                         return -EINVAL;
10251         }
10252
10253         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10254                 connect.edmg.channels =
10255                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10256
10257                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10258                         connect.edmg.bw_config =
10259                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10260         }
10261
10262         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10263                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10264                 if (IS_ERR(connkeys))
10265                         return PTR_ERR(connkeys);
10266         }
10267
10268         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10269                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10270
10271         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10272                 memcpy(&connect.ht_capa_mask,
10273                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10274                        sizeof(connect.ht_capa_mask));
10275
10276         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10277                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10278                         kzfree(connkeys);
10279                         return -EINVAL;
10280                 }
10281                 memcpy(&connect.ht_capa,
10282                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10283                        sizeof(connect.ht_capa));
10284         }
10285
10286         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10287                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10288
10289         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10290                 memcpy(&connect.vht_capa_mask,
10291                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10292                        sizeof(connect.vht_capa_mask));
10293
10294         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10295                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10296                         kzfree(connkeys);
10297                         return -EINVAL;
10298                 }
10299                 memcpy(&connect.vht_capa,
10300                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10301                        sizeof(connect.vht_capa));
10302         }
10303
10304         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10305                 if (!((rdev->wiphy.features &
10306                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10307                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10308                     !wiphy_ext_feature_isset(&rdev->wiphy,
10309                                              NL80211_EXT_FEATURE_RRM)) {
10310                         kzfree(connkeys);
10311                         return -EINVAL;
10312                 }
10313                 connect.flags |= ASSOC_REQ_USE_RRM;
10314         }
10315
10316         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10317         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10318                 kzfree(connkeys);
10319                 return -EOPNOTSUPP;
10320         }
10321
10322         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10323                 /* bss selection makes no sense if bssid is set */
10324                 if (connect.bssid) {
10325                         kzfree(connkeys);
10326                         return -EINVAL;
10327                 }
10328
10329                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10330                                        wiphy, &connect.bss_select);
10331                 if (err) {
10332                         kzfree(connkeys);
10333                         return err;
10334                 }
10335         }
10336
10337         if (wiphy_ext_feature_isset(&rdev->wiphy,
10338                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10339             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10340             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10341             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10342             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10343                 connect.fils_erp_username =
10344                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10345                 connect.fils_erp_username_len =
10346                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10347                 connect.fils_erp_realm =
10348                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10349                 connect.fils_erp_realm_len =
10350                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10351                 connect.fils_erp_next_seq_num =
10352                         nla_get_u16(
10353                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10354                 connect.fils_erp_rrk =
10355                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10356                 connect.fils_erp_rrk_len =
10357                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10358         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10359                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10360                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10361                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10362                 kzfree(connkeys);
10363                 return -EINVAL;
10364         }
10365
10366         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10367                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10368                         kzfree(connkeys);
10369                         GENL_SET_ERR_MSG(info,
10370                                          "external auth requires connection ownership");
10371                         return -EINVAL;
10372                 }
10373                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10374         }
10375
10376         wdev_lock(dev->ieee80211_ptr);
10377
10378         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10379                                connect.prev_bssid);
10380         if (err)
10381                 kzfree(connkeys);
10382
10383         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10384                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10385                 if (connect.bssid)
10386                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10387                                connect.bssid, ETH_ALEN);
10388                 else
10389                         memset(dev->ieee80211_ptr->disconnect_bssid,
10390                                0, ETH_ALEN);
10391         }
10392
10393         wdev_unlock(dev->ieee80211_ptr);
10394
10395         return err;
10396 }
10397
10398 static int nl80211_update_connect_params(struct sk_buff *skb,
10399                                          struct genl_info *info)
10400 {
10401         struct cfg80211_connect_params connect = {};
10402         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10403         struct net_device *dev = info->user_ptr[1];
10404         struct wireless_dev *wdev = dev->ieee80211_ptr;
10405         bool fils_sk_offload;
10406         u32 auth_type;
10407         u32 changed = 0;
10408         int ret;
10409
10410         if (!rdev->ops->update_connect_params)
10411                 return -EOPNOTSUPP;
10412
10413         if (info->attrs[NL80211_ATTR_IE]) {
10414                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10415                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10416                 changed |= UPDATE_ASSOC_IES;
10417         }
10418
10419         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10420                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10421
10422         /*
10423          * when driver supports fils-sk offload all attributes must be
10424          * provided. So the else covers "fils-sk-not-all" and
10425          * "no-fils-sk-any".
10426          */
10427         if (fils_sk_offload &&
10428             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10429             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10430             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10431             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10432                 connect.fils_erp_username =
10433                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10434                 connect.fils_erp_username_len =
10435                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10436                 connect.fils_erp_realm =
10437                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10438                 connect.fils_erp_realm_len =
10439                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10440                 connect.fils_erp_next_seq_num =
10441                         nla_get_u16(
10442                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10443                 connect.fils_erp_rrk =
10444                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10445                 connect.fils_erp_rrk_len =
10446                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10447                 changed |= UPDATE_FILS_ERP_INFO;
10448         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10449                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10450                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10451                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10452                 return -EINVAL;
10453         }
10454
10455         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10456                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10457                 if (!nl80211_valid_auth_type(rdev, auth_type,
10458                                              NL80211_CMD_CONNECT))
10459                         return -EINVAL;
10460
10461                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10462                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10463                         return -EINVAL;
10464
10465                 connect.auth_type = auth_type;
10466                 changed |= UPDATE_AUTH_TYPE;
10467         }
10468
10469         wdev_lock(dev->ieee80211_ptr);
10470         if (!wdev->current_bss)
10471                 ret = -ENOLINK;
10472         else
10473                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10474         wdev_unlock(dev->ieee80211_ptr);
10475
10476         return ret;
10477 }
10478
10479 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10480 {
10481         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10482         struct net_device *dev = info->user_ptr[1];
10483         u16 reason;
10484         int ret;
10485
10486         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10487             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10488                 return -EPERM;
10489
10490         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10491                 reason = WLAN_REASON_DEAUTH_LEAVING;
10492         else
10493                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10494
10495         if (reason == 0)
10496                 return -EINVAL;
10497
10498         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10499             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10500                 return -EOPNOTSUPP;
10501
10502         wdev_lock(dev->ieee80211_ptr);
10503         ret = cfg80211_disconnect(rdev, dev, reason, true);
10504         wdev_unlock(dev->ieee80211_ptr);
10505         return ret;
10506 }
10507
10508 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10509 {
10510         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10511         struct net *net;
10512         int err;
10513
10514         if (info->attrs[NL80211_ATTR_PID]) {
10515                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10516
10517                 net = get_net_ns_by_pid(pid);
10518         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10519                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10520
10521                 net = get_net_ns_by_fd(fd);
10522         } else {
10523                 return -EINVAL;
10524         }
10525
10526         if (IS_ERR(net))
10527                 return PTR_ERR(net);
10528
10529         err = 0;
10530
10531         /* check if anything to do */
10532         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10533                 err = cfg80211_switch_netns(rdev, net);
10534
10535         put_net(net);
10536         return err;
10537 }
10538
10539 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10540 {
10541         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10542         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10543                         struct cfg80211_pmksa *pmksa) = NULL;
10544         struct net_device *dev = info->user_ptr[1];
10545         struct cfg80211_pmksa pmksa;
10546
10547         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10548
10549         if (!info->attrs[NL80211_ATTR_PMKID])
10550                 return -EINVAL;
10551
10552         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10553
10554         if (info->attrs[NL80211_ATTR_MAC]) {
10555                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10556         } else if (info->attrs[NL80211_ATTR_SSID] &&
10557                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10558                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10559                     info->attrs[NL80211_ATTR_PMK])) {
10560                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10561                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10562                 pmksa.cache_id =
10563                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10564         } else {
10565                 return -EINVAL;
10566         }
10567         if (info->attrs[NL80211_ATTR_PMK]) {
10568                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10569                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10570         }
10571
10572         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10573                 pmksa.pmk_lifetime =
10574                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10575
10576         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10577                 pmksa.pmk_reauth_threshold =
10578                         nla_get_u8(
10579                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10580
10581         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10582             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10583             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10584               wiphy_ext_feature_isset(&rdev->wiphy,
10585                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10586                 return -EOPNOTSUPP;
10587
10588         switch (info->genlhdr->cmd) {
10589         case NL80211_CMD_SET_PMKSA:
10590                 rdev_ops = rdev->ops->set_pmksa;
10591                 break;
10592         case NL80211_CMD_DEL_PMKSA:
10593                 rdev_ops = rdev->ops->del_pmksa;
10594                 break;
10595         default:
10596                 WARN_ON(1);
10597                 break;
10598         }
10599
10600         if (!rdev_ops)
10601                 return -EOPNOTSUPP;
10602
10603         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10604 }
10605
10606 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10607 {
10608         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10609         struct net_device *dev = info->user_ptr[1];
10610
10611         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10612             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10613                 return -EOPNOTSUPP;
10614
10615         if (!rdev->ops->flush_pmksa)
10616                 return -EOPNOTSUPP;
10617
10618         return rdev_flush_pmksa(rdev, dev);
10619 }
10620
10621 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10622 {
10623         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10624         struct net_device *dev = info->user_ptr[1];
10625         u8 action_code, dialog_token;
10626         u32 peer_capability = 0;
10627         u16 status_code;
10628         u8 *peer;
10629         bool initiator;
10630
10631         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10632             !rdev->ops->tdls_mgmt)
10633                 return -EOPNOTSUPP;
10634
10635         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10636             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10637             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10638             !info->attrs[NL80211_ATTR_IE] ||
10639             !info->attrs[NL80211_ATTR_MAC])
10640                 return -EINVAL;
10641
10642         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10643         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10644         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10645         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10646         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10647         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10648                 peer_capability =
10649                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10650
10651         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10652                               dialog_token, status_code, peer_capability,
10653                               initiator,
10654                               nla_data(info->attrs[NL80211_ATTR_IE]),
10655                               nla_len(info->attrs[NL80211_ATTR_IE]));
10656 }
10657
10658 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10659 {
10660         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10661         struct net_device *dev = info->user_ptr[1];
10662         enum nl80211_tdls_operation operation;
10663         u8 *peer;
10664
10665         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10666             !rdev->ops->tdls_oper)
10667                 return -EOPNOTSUPP;
10668
10669         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10670             !info->attrs[NL80211_ATTR_MAC])
10671                 return -EINVAL;
10672
10673         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10674         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10675
10676         return rdev_tdls_oper(rdev, dev, peer, operation);
10677 }
10678
10679 static int nl80211_remain_on_channel(struct sk_buff *skb,
10680                                      struct genl_info *info)
10681 {
10682         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10683         struct wireless_dev *wdev = info->user_ptr[1];
10684         struct cfg80211_chan_def chandef;
10685         const struct cfg80211_chan_def *compat_chandef;
10686         struct sk_buff *msg;
10687         void *hdr;
10688         u64 cookie;
10689         u32 duration;
10690         int err;
10691
10692         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10693             !info->attrs[NL80211_ATTR_DURATION])
10694                 return -EINVAL;
10695
10696         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10697
10698         if (!rdev->ops->remain_on_channel ||
10699             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10700                 return -EOPNOTSUPP;
10701
10702         /*
10703          * We should be on that channel for at least a minimum amount of
10704          * time (10ms) but no longer than the driver supports.
10705          */
10706         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10707             duration > rdev->wiphy.max_remain_on_channel_duration)
10708                 return -EINVAL;
10709
10710         err = nl80211_parse_chandef(rdev, info, &chandef);
10711         if (err)
10712                 return err;
10713
10714         wdev_lock(wdev);
10715         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10716             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10717                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10718                                                              &chandef);
10719                 if (compat_chandef != &chandef) {
10720                         wdev_unlock(wdev);
10721                         return -EBUSY;
10722                 }
10723         }
10724         wdev_unlock(wdev);
10725
10726         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10727         if (!msg)
10728                 return -ENOMEM;
10729
10730         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10731                              NL80211_CMD_REMAIN_ON_CHANNEL);
10732         if (!hdr) {
10733                 err = -ENOBUFS;
10734                 goto free_msg;
10735         }
10736
10737         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10738                                      duration, &cookie);
10739
10740         if (err)
10741                 goto free_msg;
10742
10743         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10744                               NL80211_ATTR_PAD))
10745                 goto nla_put_failure;
10746
10747         genlmsg_end(msg, hdr);
10748
10749         return genlmsg_reply(msg, info);
10750
10751  nla_put_failure:
10752         err = -ENOBUFS;
10753  free_msg:
10754         nlmsg_free(msg);
10755         return err;
10756 }
10757
10758 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10759                                             struct genl_info *info)
10760 {
10761         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10762         struct wireless_dev *wdev = info->user_ptr[1];
10763         u64 cookie;
10764
10765         if (!info->attrs[NL80211_ATTR_COOKIE])
10766                 return -EINVAL;
10767
10768         if (!rdev->ops->cancel_remain_on_channel)
10769                 return -EOPNOTSUPP;
10770
10771         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10772
10773         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10774 }
10775
10776 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10777                                        struct genl_info *info)
10778 {
10779         struct cfg80211_bitrate_mask mask;
10780         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10781         struct net_device *dev = info->user_ptr[1];
10782         int err;
10783
10784         if (!rdev->ops->set_bitrate_mask)
10785                 return -EOPNOTSUPP;
10786
10787         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
10788                                             NL80211_ATTR_TX_RATES, &mask);
10789         if (err)
10790                 return err;
10791
10792         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10793 }
10794
10795 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10796 {
10797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10798         struct wireless_dev *wdev = info->user_ptr[1];
10799         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10800
10801         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10802                 return -EINVAL;
10803
10804         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10805                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10806
10807         switch (wdev->iftype) {
10808         case NL80211_IFTYPE_STATION:
10809         case NL80211_IFTYPE_ADHOC:
10810         case NL80211_IFTYPE_P2P_CLIENT:
10811         case NL80211_IFTYPE_AP:
10812         case NL80211_IFTYPE_AP_VLAN:
10813         case NL80211_IFTYPE_MESH_POINT:
10814         case NL80211_IFTYPE_P2P_GO:
10815         case NL80211_IFTYPE_P2P_DEVICE:
10816                 break;
10817         case NL80211_IFTYPE_NAN:
10818         default:
10819                 return -EOPNOTSUPP;
10820         }
10821
10822         /* not much point in registering if we can't reply */
10823         if (!rdev->ops->mgmt_tx)
10824                 return -EOPNOTSUPP;
10825
10826         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
10827             !wiphy_ext_feature_isset(&rdev->wiphy,
10828                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
10829                 GENL_SET_ERR_MSG(info,
10830                                  "multicast RX registrations are not supported");
10831                 return -EOPNOTSUPP;
10832         }
10833
10834         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10835                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10836                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10837                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
10838                                            info->extack);
10839 }
10840
10841 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10842 {
10843         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10844         struct wireless_dev *wdev = info->user_ptr[1];
10845         struct cfg80211_chan_def chandef;
10846         int err;
10847         void *hdr = NULL;
10848         u64 cookie;
10849         struct sk_buff *msg = NULL;
10850         struct cfg80211_mgmt_tx_params params = {
10851                 .dont_wait_for_ack =
10852                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10853         };
10854
10855         if (!info->attrs[NL80211_ATTR_FRAME])
10856                 return -EINVAL;
10857
10858         if (!rdev->ops->mgmt_tx)
10859                 return -EOPNOTSUPP;
10860
10861         switch (wdev->iftype) {
10862         case NL80211_IFTYPE_P2P_DEVICE:
10863                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10864                         return -EINVAL;
10865         case NL80211_IFTYPE_STATION:
10866         case NL80211_IFTYPE_ADHOC:
10867         case NL80211_IFTYPE_P2P_CLIENT:
10868         case NL80211_IFTYPE_AP:
10869         case NL80211_IFTYPE_AP_VLAN:
10870         case NL80211_IFTYPE_MESH_POINT:
10871         case NL80211_IFTYPE_P2P_GO:
10872                 break;
10873         case NL80211_IFTYPE_NAN:
10874         default:
10875                 return -EOPNOTSUPP;
10876         }
10877
10878         if (info->attrs[NL80211_ATTR_DURATION]) {
10879                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10880                         return -EINVAL;
10881                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10882
10883                 /*
10884                  * We should wait on the channel for at least a minimum amount
10885                  * of time (10ms) but no longer than the driver supports.
10886                  */
10887                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10888                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10889                         return -EINVAL;
10890         }
10891
10892         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10893
10894         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10895                 return -EINVAL;
10896
10897         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10898
10899         /* get the channel if any has been specified, otherwise pass NULL to
10900          * the driver. The latter will use the current one
10901          */
10902         chandef.chan = NULL;
10903         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10904                 err = nl80211_parse_chandef(rdev, info, &chandef);
10905                 if (err)
10906                         return err;
10907         }
10908
10909         if (!chandef.chan && params.offchan)
10910                 return -EINVAL;
10911
10912         wdev_lock(wdev);
10913         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10914                 wdev_unlock(wdev);
10915                 return -EBUSY;
10916         }
10917         wdev_unlock(wdev);
10918
10919         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10920         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10921
10922         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10923                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10924                 int i;
10925
10926                 if (len % sizeof(u16))
10927                         return -EINVAL;
10928
10929                 params.n_csa_offsets = len / sizeof(u16);
10930                 params.csa_offsets =
10931                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10932
10933                 /* check that all the offsets fit the frame */
10934                 for (i = 0; i < params.n_csa_offsets; i++) {
10935                         if (params.csa_offsets[i] >= params.len)
10936                                 return -EINVAL;
10937                 }
10938         }
10939
10940         if (!params.dont_wait_for_ack) {
10941                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10942                 if (!msg)
10943                         return -ENOMEM;
10944
10945                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10946                                      NL80211_CMD_FRAME);
10947                 if (!hdr) {
10948                         err = -ENOBUFS;
10949                         goto free_msg;
10950                 }
10951         }
10952
10953         params.chan = chandef.chan;
10954         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10955         if (err)
10956                 goto free_msg;
10957
10958         if (msg) {
10959                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10960                                       NL80211_ATTR_PAD))
10961                         goto nla_put_failure;
10962
10963                 genlmsg_end(msg, hdr);
10964                 return genlmsg_reply(msg, info);
10965         }
10966
10967         return 0;
10968
10969  nla_put_failure:
10970         err = -ENOBUFS;
10971  free_msg:
10972         nlmsg_free(msg);
10973         return err;
10974 }
10975
10976 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10977 {
10978         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10979         struct wireless_dev *wdev = info->user_ptr[1];
10980         u64 cookie;
10981
10982         if (!info->attrs[NL80211_ATTR_COOKIE])
10983                 return -EINVAL;
10984
10985         if (!rdev->ops->mgmt_tx_cancel_wait)
10986                 return -EOPNOTSUPP;
10987
10988         switch (wdev->iftype) {
10989         case NL80211_IFTYPE_STATION:
10990         case NL80211_IFTYPE_ADHOC:
10991         case NL80211_IFTYPE_P2P_CLIENT:
10992         case NL80211_IFTYPE_AP:
10993         case NL80211_IFTYPE_AP_VLAN:
10994         case NL80211_IFTYPE_P2P_GO:
10995         case NL80211_IFTYPE_P2P_DEVICE:
10996                 break;
10997         case NL80211_IFTYPE_NAN:
10998         default:
10999                 return -EOPNOTSUPP;
11000         }
11001
11002         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11003
11004         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11005 }
11006
11007 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11008 {
11009         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11010         struct wireless_dev *wdev;
11011         struct net_device *dev = info->user_ptr[1];
11012         u8 ps_state;
11013         bool state;
11014         int err;
11015
11016         if (!info->attrs[NL80211_ATTR_PS_STATE])
11017                 return -EINVAL;
11018
11019         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11020
11021         wdev = dev->ieee80211_ptr;
11022
11023         if (!rdev->ops->set_power_mgmt)
11024                 return -EOPNOTSUPP;
11025
11026         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11027
11028         if (state == wdev->ps)
11029                 return 0;
11030
11031         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11032         if (!err)
11033                 wdev->ps = state;
11034         return err;
11035 }
11036
11037 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11038 {
11039         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11040         enum nl80211_ps_state ps_state;
11041         struct wireless_dev *wdev;
11042         struct net_device *dev = info->user_ptr[1];
11043         struct sk_buff *msg;
11044         void *hdr;
11045         int err;
11046
11047         wdev = dev->ieee80211_ptr;
11048
11049         if (!rdev->ops->set_power_mgmt)
11050                 return -EOPNOTSUPP;
11051
11052         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11053         if (!msg)
11054                 return -ENOMEM;
11055
11056         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11057                              NL80211_CMD_GET_POWER_SAVE);
11058         if (!hdr) {
11059                 err = -ENOBUFS;
11060                 goto free_msg;
11061         }
11062
11063         if (wdev->ps)
11064                 ps_state = NL80211_PS_ENABLED;
11065         else
11066                 ps_state = NL80211_PS_DISABLED;
11067
11068         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11069                 goto nla_put_failure;
11070
11071         genlmsg_end(msg, hdr);
11072         return genlmsg_reply(msg, info);
11073
11074  nla_put_failure:
11075         err = -ENOBUFS;
11076  free_msg:
11077         nlmsg_free(msg);
11078         return err;
11079 }
11080
11081 static const struct nla_policy
11082 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11083         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11084         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11085         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11086         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11087         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11088         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11089         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11090 };
11091
11092 static int nl80211_set_cqm_txe(struct genl_info *info,
11093                                u32 rate, u32 pkts, u32 intvl)
11094 {
11095         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11096         struct net_device *dev = info->user_ptr[1];
11097         struct wireless_dev *wdev = dev->ieee80211_ptr;
11098
11099         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11100                 return -EINVAL;
11101
11102         if (!rdev->ops->set_cqm_txe_config)
11103                 return -EOPNOTSUPP;
11104
11105         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11106             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11107                 return -EOPNOTSUPP;
11108
11109         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11110 }
11111
11112 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11113                                     struct net_device *dev)
11114 {
11115         struct wireless_dev *wdev = dev->ieee80211_ptr;
11116         s32 last, low, high;
11117         u32 hyst;
11118         int i, n, low_index;
11119         int err;
11120
11121         /* RSSI reporting disabled? */
11122         if (!wdev->cqm_config)
11123                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11124
11125         /*
11126          * Obtain current RSSI value if possible, if not and no RSSI threshold
11127          * event has been received yet, we should receive an event after a
11128          * connection is established and enough beacons received to calculate
11129          * the average.
11130          */
11131         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11132             rdev->ops->get_station) {
11133                 struct station_info sinfo = {};
11134                 u8 *mac_addr;
11135
11136                 mac_addr = wdev->current_bss->pub.bssid;
11137
11138                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11139                 if (err)
11140                         return err;
11141
11142                 cfg80211_sinfo_release_content(&sinfo);
11143                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11144                         wdev->cqm_config->last_rssi_event_value =
11145                                 (s8) sinfo.rx_beacon_signal_avg;
11146         }
11147
11148         last = wdev->cqm_config->last_rssi_event_value;
11149         hyst = wdev->cqm_config->rssi_hyst;
11150         n = wdev->cqm_config->n_rssi_thresholds;
11151
11152         for (i = 0; i < n; i++) {
11153                 i = array_index_nospec(i, n);
11154                 if (last < wdev->cqm_config->rssi_thresholds[i])
11155                         break;
11156         }
11157
11158         low_index = i - 1;
11159         if (low_index >= 0) {
11160                 low_index = array_index_nospec(low_index, n);
11161                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11162         } else {
11163                 low = S32_MIN;
11164         }
11165         if (i < n) {
11166                 i = array_index_nospec(i, n);
11167                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11168         } else {
11169                 high = S32_MAX;
11170         }
11171
11172         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11173 }
11174
11175 static int nl80211_set_cqm_rssi(struct genl_info *info,
11176                                 const s32 *thresholds, int n_thresholds,
11177                                 u32 hysteresis)
11178 {
11179         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11180         struct net_device *dev = info->user_ptr[1];
11181         struct wireless_dev *wdev = dev->ieee80211_ptr;
11182         int i, err;
11183         s32 prev = S32_MIN;
11184
11185         /* Check all values negative and sorted */
11186         for (i = 0; i < n_thresholds; i++) {
11187                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11188                         return -EINVAL;
11189
11190                 prev = thresholds[i];
11191         }
11192
11193         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11194             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11195                 return -EOPNOTSUPP;
11196
11197         wdev_lock(wdev);
11198         cfg80211_cqm_config_free(wdev);
11199         wdev_unlock(wdev);
11200
11201         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11202                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11203                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11204
11205                 return rdev_set_cqm_rssi_config(rdev, dev,
11206                                                 thresholds[0], hysteresis);
11207         }
11208
11209         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11210                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11211                 return -EOPNOTSUPP;
11212
11213         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11214                 n_thresholds = 0;
11215
11216         wdev_lock(wdev);
11217         if (n_thresholds) {
11218                 struct cfg80211_cqm_config *cqm_config;
11219
11220                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11221                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11222                 if (!cqm_config) {
11223                         err = -ENOMEM;
11224                         goto unlock;
11225                 }
11226
11227                 cqm_config->rssi_hyst = hysteresis;
11228                 cqm_config->n_rssi_thresholds = n_thresholds;
11229                 memcpy(cqm_config->rssi_thresholds, thresholds,
11230                        n_thresholds * sizeof(s32));
11231
11232                 wdev->cqm_config = cqm_config;
11233         }
11234
11235         err = cfg80211_cqm_rssi_update(rdev, dev);
11236
11237 unlock:
11238         wdev_unlock(wdev);
11239
11240         return err;
11241 }
11242
11243 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11244 {
11245         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11246         struct nlattr *cqm;
11247         int err;
11248
11249         cqm = info->attrs[NL80211_ATTR_CQM];
11250         if (!cqm)
11251                 return -EINVAL;
11252
11253         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11254                                           nl80211_attr_cqm_policy,
11255                                           info->extack);
11256         if (err)
11257                 return err;
11258
11259         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11260             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11261                 const s32 *thresholds =
11262                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11263                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11264                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11265
11266                 if (len % 4)
11267                         return -EINVAL;
11268
11269                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11270                                             hysteresis);
11271         }
11272
11273         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11274             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11275             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11276                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11277                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11278                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11279
11280                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11281         }
11282
11283         return -EINVAL;
11284 }
11285
11286 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11287 {
11288         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11289         struct net_device *dev = info->user_ptr[1];
11290         struct ocb_setup setup = {};
11291         int err;
11292
11293         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11294         if (err)
11295                 return err;
11296
11297         return cfg80211_join_ocb(rdev, dev, &setup);
11298 }
11299
11300 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11301 {
11302         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11303         struct net_device *dev = info->user_ptr[1];
11304
11305         return cfg80211_leave_ocb(rdev, dev);
11306 }
11307
11308 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11309 {
11310         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11311         struct net_device *dev = info->user_ptr[1];
11312         struct mesh_config cfg;
11313         struct mesh_setup setup;
11314         int err;
11315
11316         /* start with default */
11317         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11318         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11319
11320         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11321                 /* and parse parameters if given */
11322                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11323                 if (err)
11324                         return err;
11325         }
11326
11327         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11328             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11329                 return -EINVAL;
11330
11331         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11332         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11333
11334         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11335             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11336                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11337                         return -EINVAL;
11338
11339         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11340                 setup.beacon_interval =
11341                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11342
11343                 err = cfg80211_validate_beacon_int(rdev,
11344                                                    NL80211_IFTYPE_MESH_POINT,
11345                                                    setup.beacon_interval);
11346                 if (err)
11347                         return err;
11348         }
11349
11350         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11351                 setup.dtim_period =
11352                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11353                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11354                         return -EINVAL;
11355         }
11356
11357         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11358                 /* parse additional setup parameters if given */
11359                 err = nl80211_parse_mesh_setup(info, &setup);
11360                 if (err)
11361                         return err;
11362         }
11363
11364         if (setup.user_mpm)
11365                 cfg.auto_open_plinks = false;
11366
11367         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11368                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11369                 if (err)
11370                         return err;
11371         } else {
11372                 /* __cfg80211_join_mesh() will sort it out */
11373                 setup.chandef.chan = NULL;
11374         }
11375
11376         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11377                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11378                 int n_rates =
11379                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11380                 struct ieee80211_supported_band *sband;
11381
11382                 if (!setup.chandef.chan)
11383                         return -EINVAL;
11384
11385                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11386
11387                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11388                                              &setup.basic_rates);
11389                 if (err)
11390                         return err;
11391         }
11392
11393         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11394                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11395                                                     NL80211_ATTR_TX_RATES,
11396                                                     &setup.beacon_rate);
11397                 if (err)
11398                         return err;
11399
11400                 if (!setup.chandef.chan)
11401                         return -EINVAL;
11402
11403                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11404                                               &setup.beacon_rate);
11405                 if (err)
11406                         return err;
11407         }
11408
11409         setup.userspace_handles_dfs =
11410                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11411
11412         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11413                 int r = validate_pae_over_nl80211(rdev, info);
11414
11415                 if (r < 0)
11416                         return r;
11417
11418                 setup.control_port_over_nl80211 = true;
11419         }
11420
11421         wdev_lock(dev->ieee80211_ptr);
11422         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11423         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11424                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11425         wdev_unlock(dev->ieee80211_ptr);
11426
11427         return err;
11428 }
11429
11430 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11431 {
11432         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11433         struct net_device *dev = info->user_ptr[1];
11434
11435         return cfg80211_leave_mesh(rdev, dev);
11436 }
11437
11438 #ifdef CONFIG_PM
11439 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11440                                         struct cfg80211_registered_device *rdev)
11441 {
11442         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11443         struct nlattr *nl_pats, *nl_pat;
11444         int i, pat_len;
11445
11446         if (!wowlan->n_patterns)
11447                 return 0;
11448
11449         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11450         if (!nl_pats)
11451                 return -ENOBUFS;
11452
11453         for (i = 0; i < wowlan->n_patterns; i++) {
11454                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11455                 if (!nl_pat)
11456                         return -ENOBUFS;
11457                 pat_len = wowlan->patterns[i].pattern_len;
11458                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11459                             wowlan->patterns[i].mask) ||
11460                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11461                             wowlan->patterns[i].pattern) ||
11462                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11463                                 wowlan->patterns[i].pkt_offset))
11464                         return -ENOBUFS;
11465                 nla_nest_end(msg, nl_pat);
11466         }
11467         nla_nest_end(msg, nl_pats);
11468
11469         return 0;
11470 }
11471
11472 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11473                                    struct cfg80211_wowlan_tcp *tcp)
11474 {
11475         struct nlattr *nl_tcp;
11476
11477         if (!tcp)
11478                 return 0;
11479
11480         nl_tcp = nla_nest_start_noflag(msg,
11481                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11482         if (!nl_tcp)
11483                 return -ENOBUFS;
11484
11485         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11486             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11487             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11488             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11489             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11490             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11491                     tcp->payload_len, tcp->payload) ||
11492             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11493                         tcp->data_interval) ||
11494             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11495                     tcp->wake_len, tcp->wake_data) ||
11496             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11497                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11498                 return -ENOBUFS;
11499
11500         if (tcp->payload_seq.len &&
11501             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11502                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11503                 return -ENOBUFS;
11504
11505         if (tcp->payload_tok.len &&
11506             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11507                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11508                     &tcp->payload_tok))
11509                 return -ENOBUFS;
11510
11511         nla_nest_end(msg, nl_tcp);
11512
11513         return 0;
11514 }
11515
11516 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11517                                   struct cfg80211_sched_scan_request *req)
11518 {
11519         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11520         int i;
11521
11522         if (!req)
11523                 return 0;
11524
11525         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11526         if (!nd)
11527                 return -ENOBUFS;
11528
11529         if (req->n_scan_plans == 1 &&
11530             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11531                         req->scan_plans[0].interval * 1000))
11532                 return -ENOBUFS;
11533
11534         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11535                 return -ENOBUFS;
11536
11537         if (req->relative_rssi_set) {
11538                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11539
11540                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11541                                req->relative_rssi))
11542                         return -ENOBUFS;
11543
11544                 rssi_adjust.band = req->rssi_adjust.band;
11545                 rssi_adjust.delta = req->rssi_adjust.delta;
11546                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11547                             sizeof(rssi_adjust), &rssi_adjust))
11548                         return -ENOBUFS;
11549         }
11550
11551         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11552         if (!freqs)
11553                 return -ENOBUFS;
11554
11555         for (i = 0; i < req->n_channels; i++) {
11556                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11557                         return -ENOBUFS;
11558         }
11559
11560         nla_nest_end(msg, freqs);
11561
11562         if (req->n_match_sets) {
11563                 matches = nla_nest_start_noflag(msg,
11564                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11565                 if (!matches)
11566                         return -ENOBUFS;
11567
11568                 for (i = 0; i < req->n_match_sets; i++) {
11569                         match = nla_nest_start_noflag(msg, i);
11570                         if (!match)
11571                                 return -ENOBUFS;
11572
11573                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11574                                     req->match_sets[i].ssid.ssid_len,
11575                                     req->match_sets[i].ssid.ssid))
11576                                 return -ENOBUFS;
11577                         nla_nest_end(msg, match);
11578                 }
11579                 nla_nest_end(msg, matches);
11580         }
11581
11582         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11583         if (!scan_plans)
11584                 return -ENOBUFS;
11585
11586         for (i = 0; i < req->n_scan_plans; i++) {
11587                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11588                 if (!scan_plan)
11589                         return -ENOBUFS;
11590
11591                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11592                                 req->scan_plans[i].interval) ||
11593                     (req->scan_plans[i].iterations &&
11594                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11595                                  req->scan_plans[i].iterations)))
11596                         return -ENOBUFS;
11597                 nla_nest_end(msg, scan_plan);
11598         }
11599         nla_nest_end(msg, scan_plans);
11600
11601         nla_nest_end(msg, nd);
11602
11603         return 0;
11604 }
11605
11606 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11607 {
11608         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11609         struct sk_buff *msg;
11610         void *hdr;
11611         u32 size = NLMSG_DEFAULT_SIZE;
11612
11613         if (!rdev->wiphy.wowlan)
11614                 return -EOPNOTSUPP;
11615
11616         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11617                 /* adjust size to have room for all the data */
11618                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11619                         rdev->wiphy.wowlan_config->tcp->payload_len +
11620                         rdev->wiphy.wowlan_config->tcp->wake_len +
11621                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11622         }
11623
11624         msg = nlmsg_new(size, GFP_KERNEL);
11625         if (!msg)
11626                 return -ENOMEM;
11627
11628         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11629                              NL80211_CMD_GET_WOWLAN);
11630         if (!hdr)
11631                 goto nla_put_failure;
11632
11633         if (rdev->wiphy.wowlan_config) {
11634                 struct nlattr *nl_wowlan;
11635
11636                 nl_wowlan = nla_nest_start_noflag(msg,
11637                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11638                 if (!nl_wowlan)
11639                         goto nla_put_failure;
11640
11641                 if ((rdev->wiphy.wowlan_config->any &&
11642                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11643                     (rdev->wiphy.wowlan_config->disconnect &&
11644                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11645                     (rdev->wiphy.wowlan_config->magic_pkt &&
11646                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11647                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11648                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11649                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11650                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11651                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11652                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11653                     (rdev->wiphy.wowlan_config->rfkill_release &&
11654                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11655                         goto nla_put_failure;
11656
11657                 if (nl80211_send_wowlan_patterns(msg, rdev))
11658                         goto nla_put_failure;
11659
11660                 if (nl80211_send_wowlan_tcp(msg,
11661                                             rdev->wiphy.wowlan_config->tcp))
11662                         goto nla_put_failure;
11663
11664                 if (nl80211_send_wowlan_nd(
11665                             msg,
11666                             rdev->wiphy.wowlan_config->nd_config))
11667                         goto nla_put_failure;
11668
11669                 nla_nest_end(msg, nl_wowlan);
11670         }
11671
11672         genlmsg_end(msg, hdr);
11673         return genlmsg_reply(msg, info);
11674
11675 nla_put_failure:
11676         nlmsg_free(msg);
11677         return -ENOBUFS;
11678 }
11679
11680 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11681                                     struct nlattr *attr,
11682                                     struct cfg80211_wowlan *trig)
11683 {
11684         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11685         struct cfg80211_wowlan_tcp *cfg;
11686         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11687         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11688         u32 size;
11689         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11690         int err, port;
11691
11692         if (!rdev->wiphy.wowlan->tcp)
11693                 return -EINVAL;
11694
11695         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11696                                           nl80211_wowlan_tcp_policy, NULL);
11697         if (err)
11698                 return err;
11699
11700         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11701             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11702             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11703             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11704             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11705             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11706             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11707             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11708                 return -EINVAL;
11709
11710         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11711         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11712                 return -EINVAL;
11713
11714         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11715                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11716             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11717                 return -EINVAL;
11718
11719         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11720         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11721                 return -EINVAL;
11722
11723         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11724         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11725                 return -EINVAL;
11726
11727         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11728                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11729
11730                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11731                 tokens_size = tokln - sizeof(*tok);
11732
11733                 if (!tok->len || tokens_size % tok->len)
11734                         return -EINVAL;
11735                 if (!rdev->wiphy.wowlan->tcp->tok)
11736                         return -EINVAL;
11737                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11738                         return -EINVAL;
11739                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11740                         return -EINVAL;
11741                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11742                         return -EINVAL;
11743                 if (tok->offset + tok->len > data_size)
11744                         return -EINVAL;
11745         }
11746
11747         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11748                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11749                 if (!rdev->wiphy.wowlan->tcp->seq)
11750                         return -EINVAL;
11751                 if (seq->len == 0 || seq->len > 4)
11752                         return -EINVAL;
11753                 if (seq->len + seq->offset > data_size)
11754                         return -EINVAL;
11755         }
11756
11757         size = sizeof(*cfg);
11758         size += data_size;
11759         size += wake_size + wake_mask_size;
11760         size += tokens_size;
11761
11762         cfg = kzalloc(size, GFP_KERNEL);
11763         if (!cfg)
11764                 return -ENOMEM;
11765         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11766         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11767         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11768                ETH_ALEN);
11769         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11770                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11771         else
11772                 port = 0;
11773 #ifdef CONFIG_INET
11774         /* allocate a socket and port for it and use it */
11775         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11776                             IPPROTO_TCP, &cfg->sock, 1);
11777         if (err) {
11778                 kfree(cfg);
11779                 return err;
11780         }
11781         if (inet_csk_get_port(cfg->sock->sk, port)) {
11782                 sock_release(cfg->sock);
11783                 kfree(cfg);
11784                 return -EADDRINUSE;
11785         }
11786         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11787 #else
11788         if (!port) {
11789                 kfree(cfg);
11790                 return -EINVAL;
11791         }
11792         cfg->src_port = port;
11793 #endif
11794
11795         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11796         cfg->payload_len = data_size;
11797         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11798         memcpy((void *)cfg->payload,
11799                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11800                data_size);
11801         if (seq)
11802                 cfg->payload_seq = *seq;
11803         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11804         cfg->wake_len = wake_size;
11805         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11806         memcpy((void *)cfg->wake_data,
11807                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11808                wake_size);
11809         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11810                          data_size + wake_size;
11811         memcpy((void *)cfg->wake_mask,
11812                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11813                wake_mask_size);
11814         if (tok) {
11815                 cfg->tokens_size = tokens_size;
11816                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11817         }
11818
11819         trig->tcp = cfg;
11820
11821         return 0;
11822 }
11823
11824 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11825                                    const struct wiphy_wowlan_support *wowlan,
11826                                    struct nlattr *attr,
11827                                    struct cfg80211_wowlan *trig)
11828 {
11829         struct nlattr **tb;
11830         int err;
11831
11832         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11833         if (!tb)
11834                 return -ENOMEM;
11835
11836         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11837                 err = -EOPNOTSUPP;
11838                 goto out;
11839         }
11840
11841         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11842                                           nl80211_policy, NULL);
11843         if (err)
11844                 goto out;
11845
11846         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11847                                                    wowlan->max_nd_match_sets);
11848         err = PTR_ERR_OR_ZERO(trig->nd_config);
11849         if (err)
11850                 trig->nd_config = NULL;
11851
11852 out:
11853         kfree(tb);
11854         return err;
11855 }
11856
11857 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11858 {
11859         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11860         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11861         struct cfg80211_wowlan new_triggers = {};
11862         struct cfg80211_wowlan *ntrig;
11863         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11864         int err, i;
11865         bool prev_enabled = rdev->wiphy.wowlan_config;
11866         bool regular = false;
11867
11868         if (!wowlan)
11869                 return -EOPNOTSUPP;
11870
11871         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11872                 cfg80211_rdev_free_wowlan(rdev);
11873                 rdev->wiphy.wowlan_config = NULL;
11874                 goto set_wakeup;
11875         }
11876
11877         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11878                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11879                                           nl80211_wowlan_policy, info->extack);
11880         if (err)
11881                 return err;
11882
11883         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11884                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11885                         return -EINVAL;
11886                 new_triggers.any = true;
11887         }
11888
11889         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11890                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11891                         return -EINVAL;
11892                 new_triggers.disconnect = true;
11893                 regular = true;
11894         }
11895
11896         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11897                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11898                         return -EINVAL;
11899                 new_triggers.magic_pkt = true;
11900                 regular = true;
11901         }
11902
11903         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11904                 return -EINVAL;
11905
11906         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11907                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11908                         return -EINVAL;
11909                 new_triggers.gtk_rekey_failure = true;
11910                 regular = true;
11911         }
11912
11913         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11914                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11915                         return -EINVAL;
11916                 new_triggers.eap_identity_req = true;
11917                 regular = true;
11918         }
11919
11920         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11921                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11922                         return -EINVAL;
11923                 new_triggers.four_way_handshake = true;
11924                 regular = true;
11925         }
11926
11927         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11928                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11929                         return -EINVAL;
11930                 new_triggers.rfkill_release = true;
11931                 regular = true;
11932         }
11933
11934         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11935                 struct nlattr *pat;
11936                 int n_patterns = 0;
11937                 int rem, pat_len, mask_len, pkt_offset;
11938                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11939
11940                 regular = true;
11941
11942                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11943                                     rem)
11944                         n_patterns++;
11945                 if (n_patterns > wowlan->n_patterns)
11946                         return -EINVAL;
11947
11948                 new_triggers.patterns = kcalloc(n_patterns,
11949                                                 sizeof(new_triggers.patterns[0]),
11950                                                 GFP_KERNEL);
11951                 if (!new_triggers.patterns)
11952                         return -ENOMEM;
11953
11954                 new_triggers.n_patterns = n_patterns;
11955                 i = 0;
11956
11957                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11958                                     rem) {
11959                         u8 *mask_pat;
11960
11961                         err = nla_parse_nested_deprecated(pat_tb,
11962                                                           MAX_NL80211_PKTPAT,
11963                                                           pat,
11964                                                           nl80211_packet_pattern_policy,
11965                                                           info->extack);
11966                         if (err)
11967                                 goto error;
11968
11969                         err = -EINVAL;
11970                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11971                             !pat_tb[NL80211_PKTPAT_PATTERN])
11972                                 goto error;
11973                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11974                         mask_len = DIV_ROUND_UP(pat_len, 8);
11975                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11976                                 goto error;
11977                         if (pat_len > wowlan->pattern_max_len ||
11978                             pat_len < wowlan->pattern_min_len)
11979                                 goto error;
11980
11981                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11982                                 pkt_offset = 0;
11983                         else
11984                                 pkt_offset = nla_get_u32(
11985                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11986                         if (pkt_offset > wowlan->max_pkt_offset)
11987                                 goto error;
11988                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11989
11990                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11991                         if (!mask_pat) {
11992                                 err = -ENOMEM;
11993                                 goto error;
11994                         }
11995                         new_triggers.patterns[i].mask = mask_pat;
11996                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11997                                mask_len);
11998                         mask_pat += mask_len;
11999                         new_triggers.patterns[i].pattern = mask_pat;
12000                         new_triggers.patterns[i].pattern_len = pat_len;
12001                         memcpy(mask_pat,
12002                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12003                                pat_len);
12004                         i++;
12005                 }
12006         }
12007
12008         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12009                 regular = true;
12010                 err = nl80211_parse_wowlan_tcp(
12011                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12012                         &new_triggers);
12013                 if (err)
12014                         goto error;
12015         }
12016
12017         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12018                 regular = true;
12019                 err = nl80211_parse_wowlan_nd(
12020                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12021                         &new_triggers);
12022                 if (err)
12023                         goto error;
12024         }
12025
12026         /* The 'any' trigger means the device continues operating more or less
12027          * as in its normal operation mode and wakes up the host on most of the
12028          * normal interrupts (like packet RX, ...)
12029          * It therefore makes little sense to combine with the more constrained
12030          * wakeup trigger modes.
12031          */
12032         if (new_triggers.any && regular) {
12033                 err = -EINVAL;
12034                 goto error;
12035         }
12036
12037         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12038         if (!ntrig) {
12039                 err = -ENOMEM;
12040                 goto error;
12041         }
12042         cfg80211_rdev_free_wowlan(rdev);
12043         rdev->wiphy.wowlan_config = ntrig;
12044
12045  set_wakeup:
12046         if (rdev->ops->set_wakeup &&
12047             prev_enabled != !!rdev->wiphy.wowlan_config)
12048                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12049
12050         return 0;
12051  error:
12052         for (i = 0; i < new_triggers.n_patterns; i++)
12053                 kfree(new_triggers.patterns[i].mask);
12054         kfree(new_triggers.patterns);
12055         if (new_triggers.tcp && new_triggers.tcp->sock)
12056                 sock_release(new_triggers.tcp->sock);
12057         kfree(new_triggers.tcp);
12058         kfree(new_triggers.nd_config);
12059         return err;
12060 }
12061 #endif
12062
12063 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12064                                        struct cfg80211_registered_device *rdev)
12065 {
12066         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12067         int i, j, pat_len;
12068         struct cfg80211_coalesce_rules *rule;
12069
12070         if (!rdev->coalesce->n_rules)
12071                 return 0;
12072
12073         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12074         if (!nl_rules)
12075                 return -ENOBUFS;
12076
12077         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12078                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12079                 if (!nl_rule)
12080                         return -ENOBUFS;
12081
12082                 rule = &rdev->coalesce->rules[i];
12083                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12084                                 rule->delay))
12085                         return -ENOBUFS;
12086
12087                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12088                                 rule->condition))
12089                         return -ENOBUFS;
12090
12091                 nl_pats = nla_nest_start_noflag(msg,
12092                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12093                 if (!nl_pats)
12094                         return -ENOBUFS;
12095
12096                 for (j = 0; j < rule->n_patterns; j++) {
12097                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12098                         if (!nl_pat)
12099                                 return -ENOBUFS;
12100                         pat_len = rule->patterns[j].pattern_len;
12101                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12102                                     DIV_ROUND_UP(pat_len, 8),
12103                                     rule->patterns[j].mask) ||
12104                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12105                                     rule->patterns[j].pattern) ||
12106                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12107                                         rule->patterns[j].pkt_offset))
12108                                 return -ENOBUFS;
12109                         nla_nest_end(msg, nl_pat);
12110                 }
12111                 nla_nest_end(msg, nl_pats);
12112                 nla_nest_end(msg, nl_rule);
12113         }
12114         nla_nest_end(msg, nl_rules);
12115
12116         return 0;
12117 }
12118
12119 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12120 {
12121         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12122         struct sk_buff *msg;
12123         void *hdr;
12124
12125         if (!rdev->wiphy.coalesce)
12126                 return -EOPNOTSUPP;
12127
12128         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12129         if (!msg)
12130                 return -ENOMEM;
12131
12132         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12133                              NL80211_CMD_GET_COALESCE);
12134         if (!hdr)
12135                 goto nla_put_failure;
12136
12137         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12138                 goto nla_put_failure;
12139
12140         genlmsg_end(msg, hdr);
12141         return genlmsg_reply(msg, info);
12142
12143 nla_put_failure:
12144         nlmsg_free(msg);
12145         return -ENOBUFS;
12146 }
12147
12148 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12149 {
12150         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12151         int i, j;
12152         struct cfg80211_coalesce_rules *rule;
12153
12154         if (!coalesce)
12155                 return;
12156
12157         for (i = 0; i < coalesce->n_rules; i++) {
12158                 rule = &coalesce->rules[i];
12159                 for (j = 0; j < rule->n_patterns; j++)
12160                         kfree(rule->patterns[j].mask);
12161                 kfree(rule->patterns);
12162         }
12163         kfree(coalesce->rules);
12164         kfree(coalesce);
12165         rdev->coalesce = NULL;
12166 }
12167
12168 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12169                                        struct nlattr *rule,
12170                                        struct cfg80211_coalesce_rules *new_rule)
12171 {
12172         int err, i;
12173         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12174         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12175         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12176         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12177
12178         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12179                                           rule, nl80211_coalesce_policy, NULL);
12180         if (err)
12181                 return err;
12182
12183         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12184                 new_rule->delay =
12185                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12186         if (new_rule->delay > coalesce->max_delay)
12187                 return -EINVAL;
12188
12189         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12190                 new_rule->condition =
12191                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12192
12193         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12194                 return -EINVAL;
12195
12196         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12197                             rem)
12198                 n_patterns++;
12199         if (n_patterns > coalesce->n_patterns)
12200                 return -EINVAL;
12201
12202         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12203                                      GFP_KERNEL);
12204         if (!new_rule->patterns)
12205                 return -ENOMEM;
12206
12207         new_rule->n_patterns = n_patterns;
12208         i = 0;
12209
12210         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12211                             rem) {
12212                 u8 *mask_pat;
12213
12214                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12215                                                   pat,
12216                                                   nl80211_packet_pattern_policy,
12217                                                   NULL);
12218                 if (err)
12219                         return err;
12220
12221                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12222                     !pat_tb[NL80211_PKTPAT_PATTERN])
12223                         return -EINVAL;
12224                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12225                 mask_len = DIV_ROUND_UP(pat_len, 8);
12226                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12227                         return -EINVAL;
12228                 if (pat_len > coalesce->pattern_max_len ||
12229                     pat_len < coalesce->pattern_min_len)
12230                         return -EINVAL;
12231
12232                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12233                         pkt_offset = 0;
12234                 else
12235                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12236                 if (pkt_offset > coalesce->max_pkt_offset)
12237                         return -EINVAL;
12238                 new_rule->patterns[i].pkt_offset = pkt_offset;
12239
12240                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12241                 if (!mask_pat)
12242                         return -ENOMEM;
12243
12244                 new_rule->patterns[i].mask = mask_pat;
12245                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12246                        mask_len);
12247
12248                 mask_pat += mask_len;
12249                 new_rule->patterns[i].pattern = mask_pat;
12250                 new_rule->patterns[i].pattern_len = pat_len;
12251                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12252                        pat_len);
12253                 i++;
12254         }
12255
12256         return 0;
12257 }
12258
12259 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12260 {
12261         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12262         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12263         struct cfg80211_coalesce new_coalesce = {};
12264         struct cfg80211_coalesce *n_coalesce;
12265         int err, rem_rule, n_rules = 0, i, j;
12266         struct nlattr *rule;
12267         struct cfg80211_coalesce_rules *tmp_rule;
12268
12269         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12270                 return -EOPNOTSUPP;
12271
12272         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12273                 cfg80211_rdev_free_coalesce(rdev);
12274                 rdev_set_coalesce(rdev, NULL);
12275                 return 0;
12276         }
12277
12278         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12279                             rem_rule)
12280                 n_rules++;
12281         if (n_rules > coalesce->n_rules)
12282                 return -EINVAL;
12283
12284         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12285                                      GFP_KERNEL);
12286         if (!new_coalesce.rules)
12287                 return -ENOMEM;
12288
12289         new_coalesce.n_rules = n_rules;
12290         i = 0;
12291
12292         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12293                             rem_rule) {
12294                 err = nl80211_parse_coalesce_rule(rdev, rule,
12295                                                   &new_coalesce.rules[i]);
12296                 if (err)
12297                         goto error;
12298
12299                 i++;
12300         }
12301
12302         err = rdev_set_coalesce(rdev, &new_coalesce);
12303         if (err)
12304                 goto error;
12305
12306         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12307         if (!n_coalesce) {
12308                 err = -ENOMEM;
12309                 goto error;
12310         }
12311         cfg80211_rdev_free_coalesce(rdev);
12312         rdev->coalesce = n_coalesce;
12313
12314         return 0;
12315 error:
12316         for (i = 0; i < new_coalesce.n_rules; i++) {
12317                 tmp_rule = &new_coalesce.rules[i];
12318                 for (j = 0; j < tmp_rule->n_patterns; j++)
12319                         kfree(tmp_rule->patterns[j].mask);
12320                 kfree(tmp_rule->patterns);
12321         }
12322         kfree(new_coalesce.rules);
12323
12324         return err;
12325 }
12326
12327 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12328 {
12329         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12330         struct net_device *dev = info->user_ptr[1];
12331         struct wireless_dev *wdev = dev->ieee80211_ptr;
12332         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12333         struct cfg80211_gtk_rekey_data rekey_data;
12334         int err;
12335
12336         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12337                 return -EINVAL;
12338
12339         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12340                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12341                                           nl80211_rekey_policy, info->extack);
12342         if (err)
12343                 return err;
12344
12345         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12346             !tb[NL80211_REKEY_DATA_KCK])
12347                 return -EINVAL;
12348         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12349                 return -ERANGE;
12350         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12351                 return -ERANGE;
12352         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12353                 return -ERANGE;
12354
12355         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12356         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12357         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12358
12359         wdev_lock(wdev);
12360         if (!wdev->current_bss) {
12361                 err = -ENOTCONN;
12362                 goto out;
12363         }
12364
12365         if (!rdev->ops->set_rekey_data) {
12366                 err = -EOPNOTSUPP;
12367                 goto out;
12368         }
12369
12370         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12371  out:
12372         wdev_unlock(wdev);
12373         return err;
12374 }
12375
12376 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12377                                              struct genl_info *info)
12378 {
12379         struct net_device *dev = info->user_ptr[1];
12380         struct wireless_dev *wdev = dev->ieee80211_ptr;
12381
12382         if (wdev->iftype != NL80211_IFTYPE_AP &&
12383             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12384                 return -EINVAL;
12385
12386         if (wdev->ap_unexpected_nlportid)
12387                 return -EBUSY;
12388
12389         wdev->ap_unexpected_nlportid = info->snd_portid;
12390         return 0;
12391 }
12392
12393 static int nl80211_probe_client(struct sk_buff *skb,
12394                                 struct genl_info *info)
12395 {
12396         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12397         struct net_device *dev = info->user_ptr[1];
12398         struct wireless_dev *wdev = dev->ieee80211_ptr;
12399         struct sk_buff *msg;
12400         void *hdr;
12401         const u8 *addr;
12402         u64 cookie;
12403         int err;
12404
12405         if (wdev->iftype != NL80211_IFTYPE_AP &&
12406             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12407                 return -EOPNOTSUPP;
12408
12409         if (!info->attrs[NL80211_ATTR_MAC])
12410                 return -EINVAL;
12411
12412         if (!rdev->ops->probe_client)
12413                 return -EOPNOTSUPP;
12414
12415         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12416         if (!msg)
12417                 return -ENOMEM;
12418
12419         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12420                              NL80211_CMD_PROBE_CLIENT);
12421         if (!hdr) {
12422                 err = -ENOBUFS;
12423                 goto free_msg;
12424         }
12425
12426         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12427
12428         err = rdev_probe_client(rdev, dev, addr, &cookie);
12429         if (err)
12430                 goto free_msg;
12431
12432         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12433                               NL80211_ATTR_PAD))
12434                 goto nla_put_failure;
12435
12436         genlmsg_end(msg, hdr);
12437
12438         return genlmsg_reply(msg, info);
12439
12440  nla_put_failure:
12441         err = -ENOBUFS;
12442  free_msg:
12443         nlmsg_free(msg);
12444         return err;
12445 }
12446
12447 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12448 {
12449         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12450         struct cfg80211_beacon_registration *reg, *nreg;
12451         int rv;
12452
12453         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12454                 return -EOPNOTSUPP;
12455
12456         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12457         if (!nreg)
12458                 return -ENOMEM;
12459
12460         /* First, check if already registered. */
12461         spin_lock_bh(&rdev->beacon_registrations_lock);
12462         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12463                 if (reg->nlportid == info->snd_portid) {
12464                         rv = -EALREADY;
12465                         goto out_err;
12466                 }
12467         }
12468         /* Add it to the list */
12469         nreg->nlportid = info->snd_portid;
12470         list_add(&nreg->list, &rdev->beacon_registrations);
12471
12472         spin_unlock_bh(&rdev->beacon_registrations_lock);
12473
12474         return 0;
12475 out_err:
12476         spin_unlock_bh(&rdev->beacon_registrations_lock);
12477         kfree(nreg);
12478         return rv;
12479 }
12480
12481 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12482 {
12483         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12484         struct wireless_dev *wdev = info->user_ptr[1];
12485         int err;
12486
12487         if (!rdev->ops->start_p2p_device)
12488                 return -EOPNOTSUPP;
12489
12490         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12491                 return -EOPNOTSUPP;
12492
12493         if (wdev_running(wdev))
12494                 return 0;
12495
12496         if (rfkill_blocked(rdev->rfkill))
12497                 return -ERFKILL;
12498
12499         err = rdev_start_p2p_device(rdev, wdev);
12500         if (err)
12501                 return err;
12502
12503         wdev->is_running = true;
12504         rdev->opencount++;
12505
12506         return 0;
12507 }
12508
12509 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12510 {
12511         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12512         struct wireless_dev *wdev = info->user_ptr[1];
12513
12514         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12515                 return -EOPNOTSUPP;
12516
12517         if (!rdev->ops->stop_p2p_device)
12518                 return -EOPNOTSUPP;
12519
12520         cfg80211_stop_p2p_device(rdev, wdev);
12521
12522         return 0;
12523 }
12524
12525 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12526 {
12527         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12528         struct wireless_dev *wdev = info->user_ptr[1];
12529         struct cfg80211_nan_conf conf = {};
12530         int err;
12531
12532         if (wdev->iftype != NL80211_IFTYPE_NAN)
12533                 return -EOPNOTSUPP;
12534
12535         if (wdev_running(wdev))
12536                 return -EEXIST;
12537
12538         if (rfkill_blocked(rdev->rfkill))
12539                 return -ERFKILL;
12540
12541         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12542                 return -EINVAL;
12543
12544         conf.master_pref =
12545                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12546
12547         if (info->attrs[NL80211_ATTR_BANDS]) {
12548                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12549
12550                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12551                         return -EOPNOTSUPP;
12552
12553                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12554                         return -EINVAL;
12555
12556                 conf.bands = bands;
12557         }
12558
12559         err = rdev_start_nan(rdev, wdev, &conf);
12560         if (err)
12561                 return err;
12562
12563         wdev->is_running = true;
12564         rdev->opencount++;
12565
12566         return 0;
12567 }
12568
12569 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12570 {
12571         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12572         struct wireless_dev *wdev = info->user_ptr[1];
12573
12574         if (wdev->iftype != NL80211_IFTYPE_NAN)
12575                 return -EOPNOTSUPP;
12576
12577         cfg80211_stop_nan(rdev, wdev);
12578
12579         return 0;
12580 }
12581
12582 static int validate_nan_filter(struct nlattr *filter_attr)
12583 {
12584         struct nlattr *attr;
12585         int len = 0, n_entries = 0, rem;
12586
12587         nla_for_each_nested(attr, filter_attr, rem) {
12588                 len += nla_len(attr);
12589                 n_entries++;
12590         }
12591
12592         if (len >= U8_MAX)
12593                 return -EINVAL;
12594
12595         return n_entries;
12596 }
12597
12598 static int handle_nan_filter(struct nlattr *attr_filter,
12599                              struct cfg80211_nan_func *func,
12600                              bool tx)
12601 {
12602         struct nlattr *attr;
12603         int n_entries, rem, i;
12604         struct cfg80211_nan_func_filter *filter;
12605
12606         n_entries = validate_nan_filter(attr_filter);
12607         if (n_entries < 0)
12608                 return n_entries;
12609
12610         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12611
12612         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12613         if (!filter)
12614                 return -ENOMEM;
12615
12616         i = 0;
12617         nla_for_each_nested(attr, attr_filter, rem) {
12618                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12619                 filter[i].len = nla_len(attr);
12620                 i++;
12621         }
12622         if (tx) {
12623                 func->num_tx_filters = n_entries;
12624                 func->tx_filters = filter;
12625         } else {
12626                 func->num_rx_filters = n_entries;
12627                 func->rx_filters = filter;
12628         }
12629
12630         return 0;
12631 }
12632
12633 static int nl80211_nan_add_func(struct sk_buff *skb,
12634                                 struct genl_info *info)
12635 {
12636         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12637         struct wireless_dev *wdev = info->user_ptr[1];
12638         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12639         struct cfg80211_nan_func *func;
12640         struct sk_buff *msg = NULL;
12641         void *hdr = NULL;
12642         int err = 0;
12643
12644         if (wdev->iftype != NL80211_IFTYPE_NAN)
12645                 return -EOPNOTSUPP;
12646
12647         if (!wdev_running(wdev))
12648                 return -ENOTCONN;
12649
12650         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12651                 return -EINVAL;
12652
12653         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12654                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12655                                           nl80211_nan_func_policy,
12656                                           info->extack);
12657         if (err)
12658                 return err;
12659
12660         func = kzalloc(sizeof(*func), GFP_KERNEL);
12661         if (!func)
12662                 return -ENOMEM;
12663
12664         func->cookie = cfg80211_assign_cookie(rdev);
12665
12666         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12667             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12668                 err = -EINVAL;
12669                 goto out;
12670         }
12671
12672
12673         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12674
12675         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12676                 err = -EINVAL;
12677                 goto out;
12678         }
12679
12680         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12681                sizeof(func->service_id));
12682
12683         func->close_range =
12684                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12685
12686         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12687                 func->serv_spec_info_len =
12688                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12689                 func->serv_spec_info =
12690                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12691                                 func->serv_spec_info_len,
12692                                 GFP_KERNEL);
12693                 if (!func->serv_spec_info) {
12694                         err = -ENOMEM;
12695                         goto out;
12696                 }
12697         }
12698
12699         if (tb[NL80211_NAN_FUNC_TTL])
12700                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12701
12702         switch (func->type) {
12703         case NL80211_NAN_FUNC_PUBLISH:
12704                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12705                         err = -EINVAL;
12706                         goto out;
12707                 }
12708
12709                 func->publish_type =
12710                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12711                 func->publish_bcast =
12712                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12713
12714                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12715                         func->publish_bcast) {
12716                         err = -EINVAL;
12717                         goto out;
12718                 }
12719                 break;
12720         case NL80211_NAN_FUNC_SUBSCRIBE:
12721                 func->subscribe_active =
12722                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12723                 break;
12724         case NL80211_NAN_FUNC_FOLLOW_UP:
12725                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12726                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12727                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12728                         err = -EINVAL;
12729                         goto out;
12730                 }
12731
12732                 func->followup_id =
12733                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12734                 func->followup_reqid =
12735                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12736                 memcpy(func->followup_dest.addr,
12737                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12738                        sizeof(func->followup_dest.addr));
12739                 if (func->ttl) {
12740                         err = -EINVAL;
12741                         goto out;
12742                 }
12743                 break;
12744         default:
12745                 err = -EINVAL;
12746                 goto out;
12747         }
12748
12749         if (tb[NL80211_NAN_FUNC_SRF]) {
12750                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12751
12752                 err = nla_parse_nested_deprecated(srf_tb,
12753                                                   NL80211_NAN_SRF_ATTR_MAX,
12754                                                   tb[NL80211_NAN_FUNC_SRF],
12755                                                   nl80211_nan_srf_policy,
12756                                                   info->extack);
12757                 if (err)
12758                         goto out;
12759
12760                 func->srf_include =
12761                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12762
12763                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12764                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12765                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12766                                 err = -EINVAL;
12767                                 goto out;
12768                         }
12769
12770                         func->srf_bf_len =
12771                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12772                         func->srf_bf =
12773                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12774                                         func->srf_bf_len, GFP_KERNEL);
12775                         if (!func->srf_bf) {
12776                                 err = -ENOMEM;
12777                                 goto out;
12778                         }
12779
12780                         func->srf_bf_idx =
12781                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12782                 } else {
12783                         struct nlattr *attr, *mac_attr =
12784                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12785                         int n_entries, rem, i = 0;
12786
12787                         if (!mac_attr) {
12788                                 err = -EINVAL;
12789                                 goto out;
12790                         }
12791
12792                         n_entries = validate_acl_mac_addrs(mac_attr);
12793                         if (n_entries <= 0) {
12794                                 err = -EINVAL;
12795                                 goto out;
12796                         }
12797
12798                         func->srf_num_macs = n_entries;
12799                         func->srf_macs =
12800                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12801                                         GFP_KERNEL);
12802                         if (!func->srf_macs) {
12803                                 err = -ENOMEM;
12804                                 goto out;
12805                         }
12806
12807                         nla_for_each_nested(attr, mac_attr, rem)
12808                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12809                                        sizeof(*func->srf_macs));
12810                 }
12811         }
12812
12813         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12814                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12815                                         func, true);
12816                 if (err)
12817                         goto out;
12818         }
12819
12820         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12821                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12822                                         func, false);
12823                 if (err)
12824                         goto out;
12825         }
12826
12827         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12828         if (!msg) {
12829                 err = -ENOMEM;
12830                 goto out;
12831         }
12832
12833         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12834                              NL80211_CMD_ADD_NAN_FUNCTION);
12835         /* This can't really happen - we just allocated 4KB */
12836         if (WARN_ON(!hdr)) {
12837                 err = -ENOMEM;
12838                 goto out;
12839         }
12840
12841         err = rdev_add_nan_func(rdev, wdev, func);
12842 out:
12843         if (err < 0) {
12844                 cfg80211_free_nan_func(func);
12845                 nlmsg_free(msg);
12846                 return err;
12847         }
12848
12849         /* propagate the instance id and cookie to userspace  */
12850         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12851                               NL80211_ATTR_PAD))
12852                 goto nla_put_failure;
12853
12854         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12855         if (!func_attr)
12856                 goto nla_put_failure;
12857
12858         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12859                        func->instance_id))
12860                 goto nla_put_failure;
12861
12862         nla_nest_end(msg, func_attr);
12863
12864         genlmsg_end(msg, hdr);
12865         return genlmsg_reply(msg, info);
12866
12867 nla_put_failure:
12868         nlmsg_free(msg);
12869         return -ENOBUFS;
12870 }
12871
12872 static int nl80211_nan_del_func(struct sk_buff *skb,
12873                                struct genl_info *info)
12874 {
12875         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12876         struct wireless_dev *wdev = info->user_ptr[1];
12877         u64 cookie;
12878
12879         if (wdev->iftype != NL80211_IFTYPE_NAN)
12880                 return -EOPNOTSUPP;
12881
12882         if (!wdev_running(wdev))
12883                 return -ENOTCONN;
12884
12885         if (!info->attrs[NL80211_ATTR_COOKIE])
12886                 return -EINVAL;
12887
12888         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12889
12890         rdev_del_nan_func(rdev, wdev, cookie);
12891
12892         return 0;
12893 }
12894
12895 static int nl80211_nan_change_config(struct sk_buff *skb,
12896                                      struct genl_info *info)
12897 {
12898         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12899         struct wireless_dev *wdev = info->user_ptr[1];
12900         struct cfg80211_nan_conf conf = {};
12901         u32 changed = 0;
12902
12903         if (wdev->iftype != NL80211_IFTYPE_NAN)
12904                 return -EOPNOTSUPP;
12905
12906         if (!wdev_running(wdev))
12907                 return -ENOTCONN;
12908
12909         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12910                 conf.master_pref =
12911                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12912                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12913                         return -EINVAL;
12914
12915                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12916         }
12917
12918         if (info->attrs[NL80211_ATTR_BANDS]) {
12919                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12920
12921                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12922                         return -EOPNOTSUPP;
12923
12924                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12925                         return -EINVAL;
12926
12927                 conf.bands = bands;
12928                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12929         }
12930
12931         if (!changed)
12932                 return -EINVAL;
12933
12934         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12935 }
12936
12937 void cfg80211_nan_match(struct wireless_dev *wdev,
12938                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12939 {
12940         struct wiphy *wiphy = wdev->wiphy;
12941         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12942         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12943         struct sk_buff *msg;
12944         void *hdr;
12945
12946         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12947                 return;
12948
12949         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12950         if (!msg)
12951                 return;
12952
12953         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12954         if (!hdr) {
12955                 nlmsg_free(msg);
12956                 return;
12957         }
12958
12959         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12960             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12961                                          wdev->netdev->ifindex)) ||
12962             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12963                               NL80211_ATTR_PAD))
12964                 goto nla_put_failure;
12965
12966         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12967                               NL80211_ATTR_PAD) ||
12968             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12969                 goto nla_put_failure;
12970
12971         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12972         if (!match_attr)
12973                 goto nla_put_failure;
12974
12975         local_func_attr = nla_nest_start_noflag(msg,
12976                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12977         if (!local_func_attr)
12978                 goto nla_put_failure;
12979
12980         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12981                 goto nla_put_failure;
12982
12983         nla_nest_end(msg, local_func_attr);
12984
12985         peer_func_attr = nla_nest_start_noflag(msg,
12986                                                NL80211_NAN_MATCH_FUNC_PEER);
12987         if (!peer_func_attr)
12988                 goto nla_put_failure;
12989
12990         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12991             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12992                 goto nla_put_failure;
12993
12994         if (match->info && match->info_len &&
12995             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12996                     match->info))
12997                 goto nla_put_failure;
12998
12999         nla_nest_end(msg, peer_func_attr);
13000         nla_nest_end(msg, match_attr);
13001         genlmsg_end(msg, hdr);
13002
13003         if (!wdev->owner_nlportid)
13004                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13005                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13006         else
13007                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13008                                 wdev->owner_nlportid);
13009
13010         return;
13011
13012 nla_put_failure:
13013         nlmsg_free(msg);
13014 }
13015 EXPORT_SYMBOL(cfg80211_nan_match);
13016
13017 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13018                                   u8 inst_id,
13019                                   enum nl80211_nan_func_term_reason reason,
13020                                   u64 cookie, gfp_t gfp)
13021 {
13022         struct wiphy *wiphy = wdev->wiphy;
13023         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13024         struct sk_buff *msg;
13025         struct nlattr *func_attr;
13026         void *hdr;
13027
13028         if (WARN_ON(!inst_id))
13029                 return;
13030
13031         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13032         if (!msg)
13033                 return;
13034
13035         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13036         if (!hdr) {
13037                 nlmsg_free(msg);
13038                 return;
13039         }
13040
13041         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13042             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13043                                          wdev->netdev->ifindex)) ||
13044             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13045                               NL80211_ATTR_PAD))
13046                 goto nla_put_failure;
13047
13048         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13049                               NL80211_ATTR_PAD))
13050                 goto nla_put_failure;
13051
13052         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13053         if (!func_attr)
13054                 goto nla_put_failure;
13055
13056         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13057             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13058                 goto nla_put_failure;
13059
13060         nla_nest_end(msg, func_attr);
13061         genlmsg_end(msg, hdr);
13062
13063         if (!wdev->owner_nlportid)
13064                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13065                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13066         else
13067                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13068                                 wdev->owner_nlportid);
13069
13070         return;
13071
13072 nla_put_failure:
13073         nlmsg_free(msg);
13074 }
13075 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13076
13077 static int nl80211_get_protocol_features(struct sk_buff *skb,
13078                                          struct genl_info *info)
13079 {
13080         void *hdr;
13081         struct sk_buff *msg;
13082
13083         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13084         if (!msg)
13085                 return -ENOMEM;
13086
13087         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13088                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13089         if (!hdr)
13090                 goto nla_put_failure;
13091
13092         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13093                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13094                 goto nla_put_failure;
13095
13096         genlmsg_end(msg, hdr);
13097         return genlmsg_reply(msg, info);
13098
13099  nla_put_failure:
13100         kfree_skb(msg);
13101         return -ENOBUFS;
13102 }
13103
13104 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13105 {
13106         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13107         struct cfg80211_update_ft_ies_params ft_params;
13108         struct net_device *dev = info->user_ptr[1];
13109
13110         if (!rdev->ops->update_ft_ies)
13111                 return -EOPNOTSUPP;
13112
13113         if (!info->attrs[NL80211_ATTR_MDID] ||
13114             !info->attrs[NL80211_ATTR_IE])
13115                 return -EINVAL;
13116
13117         memset(&ft_params, 0, sizeof(ft_params));
13118         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13119         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13120         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13121
13122         return rdev_update_ft_ies(rdev, dev, &ft_params);
13123 }
13124
13125 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13126                                        struct genl_info *info)
13127 {
13128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13129         struct wireless_dev *wdev = info->user_ptr[1];
13130         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13131         u16 duration;
13132         int ret;
13133
13134         if (!rdev->ops->crit_proto_start)
13135                 return -EOPNOTSUPP;
13136
13137         if (WARN_ON(!rdev->ops->crit_proto_stop))
13138                 return -EINVAL;
13139
13140         if (rdev->crit_proto_nlportid)
13141                 return -EBUSY;
13142
13143         /* determine protocol if provided */
13144         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13145                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13146
13147         if (proto >= NUM_NL80211_CRIT_PROTO)
13148                 return -EINVAL;
13149
13150         /* timeout must be provided */
13151         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13152                 return -EINVAL;
13153
13154         duration =
13155                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13156
13157         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
13158                 return -ERANGE;
13159
13160         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13161         if (!ret)
13162                 rdev->crit_proto_nlportid = info->snd_portid;
13163
13164         return ret;
13165 }
13166
13167 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13168                                       struct genl_info *info)
13169 {
13170         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13171         struct wireless_dev *wdev = info->user_ptr[1];
13172
13173         if (!rdev->ops->crit_proto_stop)
13174                 return -EOPNOTSUPP;
13175
13176         if (rdev->crit_proto_nlportid) {
13177                 rdev->crit_proto_nlportid = 0;
13178                 rdev_crit_proto_stop(rdev, wdev);
13179         }
13180         return 0;
13181 }
13182
13183 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13184                                        struct nlattr *attr,
13185                                        struct netlink_ext_ack *extack)
13186 {
13187         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13188                 if (attr->nla_type & NLA_F_NESTED) {
13189                         NL_SET_ERR_MSG_ATTR(extack, attr,
13190                                             "unexpected nested data");
13191                         return -EINVAL;
13192                 }
13193
13194                 return 0;
13195         }
13196
13197         if (!(attr->nla_type & NLA_F_NESTED)) {
13198                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13199                 return -EINVAL;
13200         }
13201
13202         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13203 }
13204
13205 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13206 {
13207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13208         struct wireless_dev *wdev =
13209                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13210         int i, err;
13211         u32 vid, subcmd;
13212
13213         if (!rdev->wiphy.vendor_commands)
13214                 return -EOPNOTSUPP;
13215
13216         if (IS_ERR(wdev)) {
13217                 err = PTR_ERR(wdev);
13218                 if (err != -EINVAL)
13219                         return err;
13220                 wdev = NULL;
13221         } else if (wdev->wiphy != &rdev->wiphy) {
13222                 return -EINVAL;
13223         }
13224
13225         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13226             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13227                 return -EINVAL;
13228
13229         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13230         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13231         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13232                 const struct wiphy_vendor_command *vcmd;
13233                 void *data = NULL;
13234                 int len = 0;
13235
13236                 vcmd = &rdev->wiphy.vendor_commands[i];
13237
13238                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13239                         continue;
13240
13241                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13242                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13243                         if (!wdev)
13244                                 return -EINVAL;
13245                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13246                             !wdev->netdev)
13247                                 return -EINVAL;
13248
13249                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13250                                 if (!wdev_running(wdev))
13251                                         return -ENETDOWN;
13252                         }
13253
13254                         if (!vcmd->doit)
13255                                 return -EOPNOTSUPP;
13256                 } else {
13257                         wdev = NULL;
13258                 }
13259
13260                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13261                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13262                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13263
13264                         err = nl80211_vendor_check_policy(vcmd,
13265                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13266                                         info->extack);
13267                         if (err)
13268                                 return err;
13269                 }
13270
13271                 rdev->cur_cmd_info = info;
13272                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13273                 rdev->cur_cmd_info = NULL;
13274                 return err;
13275         }
13276
13277         return -EOPNOTSUPP;
13278 }
13279
13280 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13281                                        struct netlink_callback *cb,
13282                                        struct cfg80211_registered_device **rdev,
13283                                        struct wireless_dev **wdev)
13284 {
13285         struct nlattr **attrbuf;
13286         u32 vid, subcmd;
13287         unsigned int i;
13288         int vcmd_idx = -1;
13289         int err;
13290         void *data = NULL;
13291         unsigned int data_len = 0;
13292
13293         if (cb->args[0]) {
13294                 /* subtract the 1 again here */
13295                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13296                 struct wireless_dev *tmp;
13297
13298                 if (!wiphy)
13299                         return -ENODEV;
13300                 *rdev = wiphy_to_rdev(wiphy);
13301                 *wdev = NULL;
13302
13303                 if (cb->args[1]) {
13304                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13305                                 if (tmp->identifier == cb->args[1] - 1) {
13306                                         *wdev = tmp;
13307                                         break;
13308                                 }
13309                         }
13310                 }
13311
13312                 /* keep rtnl locked in successful case */
13313                 return 0;
13314         }
13315
13316         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13317         if (!attrbuf)
13318                 return -ENOMEM;
13319
13320         err = nlmsg_parse_deprecated(cb->nlh,
13321                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13322                                      attrbuf, nl80211_fam.maxattr,
13323                                      nl80211_policy, NULL);
13324         if (err)
13325                 goto out;
13326
13327         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13328             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13329                 err = -EINVAL;
13330                 goto out;
13331         }
13332
13333         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13334         if (IS_ERR(*wdev))
13335                 *wdev = NULL;
13336
13337         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13338         if (IS_ERR(*rdev)) {
13339                 err = PTR_ERR(*rdev);
13340                 goto out;
13341         }
13342
13343         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13344         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13345
13346         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13347                 const struct wiphy_vendor_command *vcmd;
13348
13349                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13350
13351                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13352                         continue;
13353
13354                 if (!vcmd->dumpit) {
13355                         err = -EOPNOTSUPP;
13356                         goto out;
13357                 }
13358
13359                 vcmd_idx = i;
13360                 break;
13361         }
13362
13363         if (vcmd_idx < 0) {
13364                 err = -EOPNOTSUPP;
13365                 goto out;
13366         }
13367
13368         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13369                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13370                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13371
13372                 err = nl80211_vendor_check_policy(
13373                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13374                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13375                                 cb->extack);
13376                 if (err)
13377                         goto out;
13378         }
13379
13380         /* 0 is the first index - add 1 to parse only once */
13381         cb->args[0] = (*rdev)->wiphy_idx + 1;
13382         /* add 1 to know if it was NULL */
13383         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13384         cb->args[2] = vcmd_idx;
13385         cb->args[3] = (unsigned long)data;
13386         cb->args[4] = data_len;
13387
13388         /* keep rtnl locked in successful case */
13389         err = 0;
13390 out:
13391         kfree(attrbuf);
13392         return err;
13393 }
13394
13395 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13396                                    struct netlink_callback *cb)
13397 {
13398         struct cfg80211_registered_device *rdev;
13399         struct wireless_dev *wdev;
13400         unsigned int vcmd_idx;
13401         const struct wiphy_vendor_command *vcmd;
13402         void *data;
13403         int data_len;
13404         int err;
13405         struct nlattr *vendor_data;
13406
13407         rtnl_lock();
13408         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13409         if (err)
13410                 goto out;
13411
13412         vcmd_idx = cb->args[2];
13413         data = (void *)cb->args[3];
13414         data_len = cb->args[4];
13415         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13416
13417         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13418                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13419                 if (!wdev) {
13420                         err = -EINVAL;
13421                         goto out;
13422                 }
13423                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13424                     !wdev->netdev) {
13425                         err = -EINVAL;
13426                         goto out;
13427                 }
13428
13429                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13430                         if (!wdev_running(wdev)) {
13431                                 err = -ENETDOWN;
13432                                 goto out;
13433                         }
13434                 }
13435         }
13436
13437         while (1) {
13438                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13439                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13440                                            NL80211_CMD_VENDOR);
13441                 if (!hdr)
13442                         break;
13443
13444                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13445                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13446                                                wdev_id(wdev),
13447                                                NL80211_ATTR_PAD))) {
13448                         genlmsg_cancel(skb, hdr);
13449                         break;
13450                 }
13451
13452                 vendor_data = nla_nest_start_noflag(skb,
13453                                                     NL80211_ATTR_VENDOR_DATA);
13454                 if (!vendor_data) {
13455                         genlmsg_cancel(skb, hdr);
13456                         break;
13457                 }
13458
13459                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13460                                    (unsigned long *)&cb->args[5]);
13461                 nla_nest_end(skb, vendor_data);
13462
13463                 if (err == -ENOBUFS || err == -ENOENT) {
13464                         genlmsg_cancel(skb, hdr);
13465                         break;
13466                 } else if (err) {
13467                         genlmsg_cancel(skb, hdr);
13468                         goto out;
13469                 }
13470
13471                 genlmsg_end(skb, hdr);
13472         }
13473
13474         err = skb->len;
13475  out:
13476         rtnl_unlock();
13477         return err;
13478 }
13479
13480 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13481                                            enum nl80211_commands cmd,
13482                                            enum nl80211_attrs attr,
13483                                            int approxlen)
13484 {
13485         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13486
13487         if (WARN_ON(!rdev->cur_cmd_info))
13488                 return NULL;
13489
13490         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13491                                            rdev->cur_cmd_info->snd_portid,
13492                                            rdev->cur_cmd_info->snd_seq,
13493                                            cmd, attr, NULL, GFP_KERNEL);
13494 }
13495 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13496
13497 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13498 {
13499         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13500         void *hdr = ((void **)skb->cb)[1];
13501         struct nlattr *data = ((void **)skb->cb)[2];
13502
13503         /* clear CB data for netlink core to own from now on */
13504         memset(skb->cb, 0, sizeof(skb->cb));
13505
13506         if (WARN_ON(!rdev->cur_cmd_info)) {
13507                 kfree_skb(skb);
13508                 return -EINVAL;
13509         }
13510
13511         nla_nest_end(skb, data);
13512         genlmsg_end(skb, hdr);
13513         return genlmsg_reply(skb, rdev->cur_cmd_info);
13514 }
13515 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13516
13517 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13518 {
13519         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13520
13521         if (WARN_ON(!rdev->cur_cmd_info))
13522                 return 0;
13523
13524         return rdev->cur_cmd_info->snd_portid;
13525 }
13526 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13527
13528 static int nl80211_set_qos_map(struct sk_buff *skb,
13529                                struct genl_info *info)
13530 {
13531         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13532         struct cfg80211_qos_map *qos_map = NULL;
13533         struct net_device *dev = info->user_ptr[1];
13534         u8 *pos, len, num_des, des_len, des;
13535         int ret;
13536
13537         if (!rdev->ops->set_qos_map)
13538                 return -EOPNOTSUPP;
13539
13540         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13541                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13542                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13543
13544                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13545                     len > IEEE80211_QOS_MAP_LEN_MAX)
13546                         return -EINVAL;
13547
13548                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13549                 if (!qos_map)
13550                         return -ENOMEM;
13551
13552                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13553                 if (num_des) {
13554                         des_len = num_des *
13555                                 sizeof(struct cfg80211_dscp_exception);
13556                         memcpy(qos_map->dscp_exception, pos, des_len);
13557                         qos_map->num_des = num_des;
13558                         for (des = 0; des < num_des; des++) {
13559                                 if (qos_map->dscp_exception[des].up > 7) {
13560                                         kfree(qos_map);
13561                                         return -EINVAL;
13562                                 }
13563                         }
13564                         pos += des_len;
13565                 }
13566                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13567         }
13568
13569         wdev_lock(dev->ieee80211_ptr);
13570         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13571         if (!ret)
13572                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13573         wdev_unlock(dev->ieee80211_ptr);
13574
13575         kfree(qos_map);
13576         return ret;
13577 }
13578
13579 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13580 {
13581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13582         struct net_device *dev = info->user_ptr[1];
13583         struct wireless_dev *wdev = dev->ieee80211_ptr;
13584         const u8 *peer;
13585         u8 tsid, up;
13586         u16 admitted_time = 0;
13587         int err;
13588
13589         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13590                 return -EOPNOTSUPP;
13591
13592         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13593             !info->attrs[NL80211_ATTR_USER_PRIO])
13594                 return -EINVAL;
13595
13596         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13597         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13598
13599         /* WMM uses TIDs 0-7 even for TSPEC */
13600         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13601                 /* TODO: handle 802.11 TSPEC/admission control
13602                  * need more attributes for that (e.g. BA session requirement);
13603                  * change the WMM adminssion test above to allow both then
13604                  */
13605                 return -EINVAL;
13606         }
13607
13608         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13609
13610         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13611                 admitted_time =
13612                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13613                 if (!admitted_time)
13614                         return -EINVAL;
13615         }
13616
13617         wdev_lock(wdev);
13618         switch (wdev->iftype) {
13619         case NL80211_IFTYPE_STATION:
13620         case NL80211_IFTYPE_P2P_CLIENT:
13621                 if (wdev->current_bss)
13622                         break;
13623                 err = -ENOTCONN;
13624                 goto out;
13625         default:
13626                 err = -EOPNOTSUPP;
13627                 goto out;
13628         }
13629
13630         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13631
13632  out:
13633         wdev_unlock(wdev);
13634         return err;
13635 }
13636
13637 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13638 {
13639         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13640         struct net_device *dev = info->user_ptr[1];
13641         struct wireless_dev *wdev = dev->ieee80211_ptr;
13642         const u8 *peer;
13643         u8 tsid;
13644         int err;
13645
13646         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13647                 return -EINVAL;
13648
13649         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13650         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13651
13652         wdev_lock(wdev);
13653         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13654         wdev_unlock(wdev);
13655
13656         return err;
13657 }
13658
13659 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13660                                        struct genl_info *info)
13661 {
13662         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13663         struct net_device *dev = info->user_ptr[1];
13664         struct wireless_dev *wdev = dev->ieee80211_ptr;
13665         struct cfg80211_chan_def chandef = {};
13666         const u8 *addr;
13667         u8 oper_class;
13668         int err;
13669
13670         if (!rdev->ops->tdls_channel_switch ||
13671             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13672                 return -EOPNOTSUPP;
13673
13674         switch (dev->ieee80211_ptr->iftype) {
13675         case NL80211_IFTYPE_STATION:
13676         case NL80211_IFTYPE_P2P_CLIENT:
13677                 break;
13678         default:
13679                 return -EOPNOTSUPP;
13680         }
13681
13682         if (!info->attrs[NL80211_ATTR_MAC] ||
13683             !info->attrs[NL80211_ATTR_OPER_CLASS])
13684                 return -EINVAL;
13685
13686         err = nl80211_parse_chandef(rdev, info, &chandef);
13687         if (err)
13688                 return err;
13689
13690         /*
13691          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13692          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13693          * specification is not defined for them.
13694          */
13695         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13696             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13697             chandef.width != NL80211_CHAN_WIDTH_20)
13698                 return -EINVAL;
13699
13700         /* we will be active on the TDLS link */
13701         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13702                                            wdev->iftype))
13703                 return -EINVAL;
13704
13705         /* don't allow switching to DFS channels */
13706         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13707                 return -EINVAL;
13708
13709         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13710         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13711
13712         wdev_lock(wdev);
13713         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13714         wdev_unlock(wdev);
13715
13716         return err;
13717 }
13718
13719 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13720                                               struct genl_info *info)
13721 {
13722         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13723         struct net_device *dev = info->user_ptr[1];
13724         struct wireless_dev *wdev = dev->ieee80211_ptr;
13725         const u8 *addr;
13726
13727         if (!rdev->ops->tdls_channel_switch ||
13728             !rdev->ops->tdls_cancel_channel_switch ||
13729             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13730                 return -EOPNOTSUPP;
13731
13732         switch (dev->ieee80211_ptr->iftype) {
13733         case NL80211_IFTYPE_STATION:
13734         case NL80211_IFTYPE_P2P_CLIENT:
13735                 break;
13736         default:
13737                 return -EOPNOTSUPP;
13738         }
13739
13740         if (!info->attrs[NL80211_ATTR_MAC])
13741                 return -EINVAL;
13742
13743         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13744
13745         wdev_lock(wdev);
13746         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13747         wdev_unlock(wdev);
13748
13749         return 0;
13750 }
13751
13752 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13753                                             struct genl_info *info)
13754 {
13755         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13756         struct net_device *dev = info->user_ptr[1];
13757         struct wireless_dev *wdev = dev->ieee80211_ptr;
13758         const struct nlattr *nla;
13759         bool enabled;
13760
13761         if (!rdev->ops->set_multicast_to_unicast)
13762                 return -EOPNOTSUPP;
13763
13764         if (wdev->iftype != NL80211_IFTYPE_AP &&
13765             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13766                 return -EOPNOTSUPP;
13767
13768         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13769         enabled = nla_get_flag(nla);
13770
13771         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13772 }
13773
13774 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13775 {
13776         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13777         struct net_device *dev = info->user_ptr[1];
13778         struct wireless_dev *wdev = dev->ieee80211_ptr;
13779         struct cfg80211_pmk_conf pmk_conf = {};
13780         int ret;
13781
13782         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13783             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13784                 return -EOPNOTSUPP;
13785
13786         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13787                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13788                 return -EOPNOTSUPP;
13789
13790         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13791                 return -EINVAL;
13792
13793         wdev_lock(wdev);
13794         if (!wdev->current_bss) {
13795                 ret = -ENOTCONN;
13796                 goto out;
13797         }
13798
13799         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13800         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13801                 ret = -EINVAL;
13802                 goto out;
13803         }
13804
13805         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13806         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13807         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13808             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13809                 ret = -EINVAL;
13810                 goto out;
13811         }
13812
13813         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13814                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13815
13816                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13817                         ret = -EINVAL;
13818                         goto out;
13819                 }
13820
13821                 pmk_conf.pmk_r0_name =
13822                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13823         }
13824
13825         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13826 out:
13827         wdev_unlock(wdev);
13828         return ret;
13829 }
13830
13831 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13832 {
13833         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13834         struct net_device *dev = info->user_ptr[1];
13835         struct wireless_dev *wdev = dev->ieee80211_ptr;
13836         const u8 *aa;
13837         int ret;
13838
13839         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13840             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13841                 return -EOPNOTSUPP;
13842
13843         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13844                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13845                 return -EOPNOTSUPP;
13846
13847         if (!info->attrs[NL80211_ATTR_MAC])
13848                 return -EINVAL;
13849
13850         wdev_lock(wdev);
13851         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13852         ret = rdev_del_pmk(rdev, dev, aa);
13853         wdev_unlock(wdev);
13854
13855         return ret;
13856 }
13857
13858 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13859 {
13860         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13861         struct net_device *dev = info->user_ptr[1];
13862         struct cfg80211_external_auth_params params;
13863
13864         if (!rdev->ops->external_auth)
13865                 return -EOPNOTSUPP;
13866
13867         if (!info->attrs[NL80211_ATTR_SSID] &&
13868             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13869             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13870                 return -EINVAL;
13871
13872         if (!info->attrs[NL80211_ATTR_BSSID])
13873                 return -EINVAL;
13874
13875         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13876                 return -EINVAL;
13877
13878         memset(&params, 0, sizeof(params));
13879
13880         if (info->attrs[NL80211_ATTR_SSID]) {
13881                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13882                 if (params.ssid.ssid_len == 0 ||
13883                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13884                         return -EINVAL;
13885                 memcpy(params.ssid.ssid,
13886                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13887                        params.ssid.ssid_len);
13888         }
13889
13890         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13891                ETH_ALEN);
13892
13893         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13894
13895         if (info->attrs[NL80211_ATTR_PMKID])
13896                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13897
13898         return rdev_external_auth(rdev, dev, &params);
13899 }
13900
13901 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13902 {
13903         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
13904         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13905         struct net_device *dev = info->user_ptr[1];
13906         struct wireless_dev *wdev = dev->ieee80211_ptr;
13907         const u8 *buf;
13908         size_t len;
13909         u8 *dest;
13910         u16 proto;
13911         bool noencrypt;
13912         u64 cookie = 0;
13913         int err;
13914
13915         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13916                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13917                 return -EOPNOTSUPP;
13918
13919         if (!rdev->ops->tx_control_port)
13920                 return -EOPNOTSUPP;
13921
13922         if (!info->attrs[NL80211_ATTR_FRAME] ||
13923             !info->attrs[NL80211_ATTR_MAC] ||
13924             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13925                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13926                 return -EINVAL;
13927         }
13928
13929         wdev_lock(wdev);
13930
13931         switch (wdev->iftype) {
13932         case NL80211_IFTYPE_AP:
13933         case NL80211_IFTYPE_P2P_GO:
13934         case NL80211_IFTYPE_MESH_POINT:
13935                 break;
13936         case NL80211_IFTYPE_ADHOC:
13937         case NL80211_IFTYPE_STATION:
13938         case NL80211_IFTYPE_P2P_CLIENT:
13939                 if (wdev->current_bss)
13940                         break;
13941                 err = -ENOTCONN;
13942                 goto out;
13943         default:
13944                 err = -EOPNOTSUPP;
13945                 goto out;
13946         }
13947
13948         wdev_unlock(wdev);
13949
13950         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13951         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13952         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13953         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13954         noencrypt =
13955                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13956
13957         err = rdev_tx_control_port(rdev, dev, buf, len,
13958                                    dest, cpu_to_be16(proto), noencrypt,
13959                                    dont_wait_for_ack ? NULL : &cookie);
13960         if (!err && !dont_wait_for_ack)
13961                 nl_set_extack_cookie_u64(info->extack, cookie);
13962         return err;
13963  out:
13964         wdev_unlock(wdev);
13965         return err;
13966 }
13967
13968 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13969                                            struct genl_info *info)
13970 {
13971         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13972         struct net_device *dev = info->user_ptr[1];
13973         struct wireless_dev *wdev = dev->ieee80211_ptr;
13974         struct cfg80211_ftm_responder_stats ftm_stats = {};
13975         struct sk_buff *msg;
13976         void *hdr;
13977         struct nlattr *ftm_stats_attr;
13978         int err;
13979
13980         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13981                 return -EOPNOTSUPP;
13982
13983         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13984         if (err)
13985                 return err;
13986
13987         if (!ftm_stats.filled)
13988                 return -ENODATA;
13989
13990         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13991         if (!msg)
13992                 return -ENOMEM;
13993
13994         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13995                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13996         if (!hdr)
13997                 goto nla_put_failure;
13998
13999         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14000                 goto nla_put_failure;
14001
14002         ftm_stats_attr = nla_nest_start_noflag(msg,
14003                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14004         if (!ftm_stats_attr)
14005                 goto nla_put_failure;
14006
14007 #define SET_FTM(field, name, type)                                       \
14008         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14009             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14010                              ftm_stats.field))                           \
14011                 goto nla_put_failure; } while (0)
14012 #define SET_FTM_U64(field, name)                                         \
14013         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14014             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14015                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14016                 goto nla_put_failure; } while (0)
14017
14018         SET_FTM(success_num, SUCCESS_NUM, u32);
14019         SET_FTM(partial_num, PARTIAL_NUM, u32);
14020         SET_FTM(failed_num, FAILED_NUM, u32);
14021         SET_FTM(asap_num, ASAP_NUM, u32);
14022         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14023         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14024         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14025         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14026         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14027 #undef SET_FTM
14028
14029         nla_nest_end(msg, ftm_stats_attr);
14030
14031         genlmsg_end(msg, hdr);
14032         return genlmsg_reply(msg, info);
14033
14034 nla_put_failure:
14035         nlmsg_free(msg);
14036         return -ENOBUFS;
14037 }
14038
14039 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14040 {
14041         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14042         struct cfg80211_update_owe_info owe_info;
14043         struct net_device *dev = info->user_ptr[1];
14044
14045         if (!rdev->ops->update_owe_info)
14046                 return -EOPNOTSUPP;
14047
14048         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14049             !info->attrs[NL80211_ATTR_MAC])
14050                 return -EINVAL;
14051
14052         memset(&owe_info, 0, sizeof(owe_info));
14053         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14054         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14055
14056         if (info->attrs[NL80211_ATTR_IE]) {
14057                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14058                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14059         }
14060
14061         return rdev_update_owe_info(rdev, dev, &owe_info);
14062 }
14063
14064 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14065 {
14066         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14067         struct net_device *dev = info->user_ptr[1];
14068         struct wireless_dev *wdev = dev->ieee80211_ptr;
14069         struct station_info sinfo = {};
14070         const u8 *buf;
14071         size_t len;
14072         u8 *dest;
14073         int err;
14074
14075         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14076                 return -EOPNOTSUPP;
14077
14078         if (!info->attrs[NL80211_ATTR_MAC] ||
14079             !info->attrs[NL80211_ATTR_FRAME]) {
14080                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14081                 return -EINVAL;
14082         }
14083
14084         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14085                 return -EOPNOTSUPP;
14086
14087         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14088         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14089         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14090
14091         if (len < sizeof(struct ethhdr))
14092                 return -EINVAL;
14093
14094         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14095             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14096                 return -EINVAL;
14097
14098         err = rdev_get_station(rdev, dev, dest, &sinfo);
14099         if (err)
14100                 return err;
14101
14102         cfg80211_sinfo_release_content(&sinfo);
14103
14104         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14105 }
14106
14107 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14108                           struct nlattr *attrs[], struct net_device *dev,
14109                           struct cfg80211_tid_cfg *tid_conf,
14110                           struct genl_info *info, const u8 *peer)
14111 {
14112         struct netlink_ext_ack *extack = info->extack;
14113         u64 mask;
14114         int err;
14115
14116         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14117                 return -EINVAL;
14118
14119         tid_conf->config_override =
14120                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14121         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14122
14123         if (tid_conf->config_override) {
14124                 if (rdev->ops->reset_tid_config) {
14125                         err = rdev_reset_tid_config(rdev, dev, peer,
14126                                                     tid_conf->tids);
14127                         if (err)
14128                                 return err;
14129                 } else {
14130                         return -EINVAL;
14131                 }
14132         }
14133
14134         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14135                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14136                 tid_conf->noack =
14137                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14138         }
14139
14140         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14141                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14142                 tid_conf->retry_short =
14143                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14144
14145                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14146                         return -EINVAL;
14147         }
14148
14149         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14150                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14151                 tid_conf->retry_long =
14152                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14153
14154                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14155                         return -EINVAL;
14156         }
14157
14158         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14159                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14160                 tid_conf->ampdu =
14161                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14162         }
14163
14164         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14165                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14166                 tid_conf->rtscts =
14167                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14168         }
14169
14170         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14171                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14172                 tid_conf->amsdu =
14173                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14174         }
14175
14176         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14177                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14178
14179                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14180
14181                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14182                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14183                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14184                                                     &tid_conf->txrate_mask);
14185                         if (err)
14186                                 return err;
14187
14188                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14189                 }
14190                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14191         }
14192
14193         if (peer)
14194                 mask = rdev->wiphy.tid_config_support.peer;
14195         else
14196                 mask = rdev->wiphy.tid_config_support.vif;
14197
14198         if (tid_conf->mask & ~mask) {
14199                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14200                 return -ENOTSUPP;
14201         }
14202
14203         return 0;
14204 }
14205
14206 static int nl80211_set_tid_config(struct sk_buff *skb,
14207                                   struct genl_info *info)
14208 {
14209         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14210         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14211         struct net_device *dev = info->user_ptr[1];
14212         struct cfg80211_tid_config *tid_config;
14213         struct nlattr *tid;
14214         int conf_idx = 0, rem_conf;
14215         int ret = -EINVAL;
14216         u32 num_conf = 0;
14217
14218         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14219                 return -EINVAL;
14220
14221         if (!rdev->ops->set_tid_config)
14222                 return -EOPNOTSUPP;
14223
14224         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14225                             rem_conf)
14226                 num_conf++;
14227
14228         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14229                              GFP_KERNEL);
14230         if (!tid_config)
14231                 return -ENOMEM;
14232
14233         tid_config->n_tid_conf = num_conf;
14234
14235         if (info->attrs[NL80211_ATTR_MAC])
14236                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14237
14238         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14239                             rem_conf) {
14240                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14241                                        tid, NULL, NULL);
14242
14243                 if (ret)
14244                         goto bad_tid_conf;
14245
14246                 ret = parse_tid_conf(rdev, attrs, dev,
14247                                      &tid_config->tid_conf[conf_idx],
14248                                      info, tid_config->peer);
14249                 if (ret)
14250                         goto bad_tid_conf;
14251
14252                 conf_idx++;
14253         }
14254
14255         ret = rdev_set_tid_config(rdev, dev, tid_config);
14256
14257 bad_tid_conf:
14258         kfree(tid_config);
14259         return ret;
14260 }
14261
14262 #define NL80211_FLAG_NEED_WIPHY         0x01
14263 #define NL80211_FLAG_NEED_NETDEV        0x02
14264 #define NL80211_FLAG_NEED_RTNL          0x04
14265 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14266 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14267                                          NL80211_FLAG_CHECK_NETDEV_UP)
14268 #define NL80211_FLAG_NEED_WDEV          0x10
14269 /* If a netdev is associated, it must be UP, P2P must be started */
14270 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14271                                          NL80211_FLAG_CHECK_NETDEV_UP)
14272 #define NL80211_FLAG_CLEAR_SKB          0x20
14273
14274 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14275                             struct genl_info *info)
14276 {
14277         struct cfg80211_registered_device *rdev;
14278         struct wireless_dev *wdev;
14279         struct net_device *dev;
14280         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14281
14282         if (rtnl)
14283                 rtnl_lock();
14284
14285         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14286                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14287                 if (IS_ERR(rdev)) {
14288                         if (rtnl)
14289                                 rtnl_unlock();
14290                         return PTR_ERR(rdev);
14291                 }
14292                 info->user_ptr[0] = rdev;
14293         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14294                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14295                 ASSERT_RTNL();
14296
14297                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14298                                                   info->attrs);
14299                 if (IS_ERR(wdev)) {
14300                         if (rtnl)
14301                                 rtnl_unlock();
14302                         return PTR_ERR(wdev);
14303                 }
14304
14305                 dev = wdev->netdev;
14306                 rdev = wiphy_to_rdev(wdev->wiphy);
14307
14308                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14309                         if (!dev) {
14310                                 if (rtnl)
14311                                         rtnl_unlock();
14312                                 return -EINVAL;
14313                         }
14314
14315                         info->user_ptr[1] = dev;
14316                 } else {
14317                         info->user_ptr[1] = wdev;
14318                 }
14319
14320                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14321                     !wdev_running(wdev)) {
14322                         if (rtnl)
14323                                 rtnl_unlock();
14324                         return -ENETDOWN;
14325                 }
14326
14327                 if (dev)
14328                         dev_hold(dev);
14329
14330                 info->user_ptr[0] = rdev;
14331         }
14332
14333         return 0;
14334 }
14335
14336 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14337                               struct genl_info *info)
14338 {
14339         if (info->user_ptr[1]) {
14340                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14341                         struct wireless_dev *wdev = info->user_ptr[1];
14342
14343                         if (wdev->netdev)
14344                                 dev_put(wdev->netdev);
14345                 } else {
14346                         dev_put(info->user_ptr[1]);
14347                 }
14348         }
14349
14350         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14351                 rtnl_unlock();
14352
14353         /* If needed, clear the netlink message payload from the SKB
14354          * as it might contain key data that shouldn't stick around on
14355          * the heap after the SKB is freed. The netlink message header
14356          * is still needed for further processing, so leave it intact.
14357          */
14358         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14359                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14360
14361                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14362         }
14363 }
14364
14365 static const struct genl_ops nl80211_ops[] = {
14366         {
14367                 .cmd = NL80211_CMD_GET_WIPHY,
14368                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14369                 .doit = nl80211_get_wiphy,
14370                 .dumpit = nl80211_dump_wiphy,
14371                 .done = nl80211_dump_wiphy_done,
14372                 /* can be retrieved by unprivileged users */
14373                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14374                                   NL80211_FLAG_NEED_RTNL,
14375         },
14376         {
14377                 .cmd = NL80211_CMD_SET_WIPHY,
14378                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14379                 .doit = nl80211_set_wiphy,
14380                 .flags = GENL_UNS_ADMIN_PERM,
14381                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14382         },
14383         {
14384                 .cmd = NL80211_CMD_GET_INTERFACE,
14385                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14386                 .doit = nl80211_get_interface,
14387                 .dumpit = nl80211_dump_interface,
14388                 /* can be retrieved by unprivileged users */
14389                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14390                                   NL80211_FLAG_NEED_RTNL,
14391         },
14392         {
14393                 .cmd = NL80211_CMD_SET_INTERFACE,
14394                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14395                 .doit = nl80211_set_interface,
14396                 .flags = GENL_UNS_ADMIN_PERM,
14397                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14398                                   NL80211_FLAG_NEED_RTNL,
14399         },
14400         {
14401                 .cmd = NL80211_CMD_NEW_INTERFACE,
14402                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14403                 .doit = nl80211_new_interface,
14404                 .flags = GENL_UNS_ADMIN_PERM,
14405                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14406                                   NL80211_FLAG_NEED_RTNL,
14407         },
14408         {
14409                 .cmd = NL80211_CMD_DEL_INTERFACE,
14410                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14411                 .doit = nl80211_del_interface,
14412                 .flags = GENL_UNS_ADMIN_PERM,
14413                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14414                                   NL80211_FLAG_NEED_RTNL,
14415         },
14416         {
14417                 .cmd = NL80211_CMD_GET_KEY,
14418                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14419                 .doit = nl80211_get_key,
14420                 .flags = GENL_UNS_ADMIN_PERM,
14421                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14422                                   NL80211_FLAG_NEED_RTNL,
14423         },
14424         {
14425                 .cmd = NL80211_CMD_SET_KEY,
14426                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14427                 .doit = nl80211_set_key,
14428                 .flags = GENL_UNS_ADMIN_PERM,
14429                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14430                                   NL80211_FLAG_NEED_RTNL |
14431                                   NL80211_FLAG_CLEAR_SKB,
14432         },
14433         {
14434                 .cmd = NL80211_CMD_NEW_KEY,
14435                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14436                 .doit = nl80211_new_key,
14437                 .flags = GENL_UNS_ADMIN_PERM,
14438                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14439                                   NL80211_FLAG_NEED_RTNL |
14440                                   NL80211_FLAG_CLEAR_SKB,
14441         },
14442         {
14443                 .cmd = NL80211_CMD_DEL_KEY,
14444                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14445                 .doit = nl80211_del_key,
14446                 .flags = GENL_UNS_ADMIN_PERM,
14447                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14448                                   NL80211_FLAG_NEED_RTNL,
14449         },
14450         {
14451                 .cmd = NL80211_CMD_SET_BEACON,
14452                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14453                 .flags = GENL_UNS_ADMIN_PERM,
14454                 .doit = nl80211_set_beacon,
14455                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14456                                   NL80211_FLAG_NEED_RTNL,
14457         },
14458         {
14459                 .cmd = NL80211_CMD_START_AP,
14460                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14461                 .flags = GENL_UNS_ADMIN_PERM,
14462                 .doit = nl80211_start_ap,
14463                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14464                                   NL80211_FLAG_NEED_RTNL,
14465         },
14466         {
14467                 .cmd = NL80211_CMD_STOP_AP,
14468                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14469                 .flags = GENL_UNS_ADMIN_PERM,
14470                 .doit = nl80211_stop_ap,
14471                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14472                                   NL80211_FLAG_NEED_RTNL,
14473         },
14474         {
14475                 .cmd = NL80211_CMD_GET_STATION,
14476                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14477                 .doit = nl80211_get_station,
14478                 .dumpit = nl80211_dump_station,
14479                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14480                                   NL80211_FLAG_NEED_RTNL,
14481         },
14482         {
14483                 .cmd = NL80211_CMD_SET_STATION,
14484                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14485                 .doit = nl80211_set_station,
14486                 .flags = GENL_UNS_ADMIN_PERM,
14487                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14488                                   NL80211_FLAG_NEED_RTNL,
14489         },
14490         {
14491                 .cmd = NL80211_CMD_NEW_STATION,
14492                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14493                 .doit = nl80211_new_station,
14494                 .flags = GENL_UNS_ADMIN_PERM,
14495                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14496                                   NL80211_FLAG_NEED_RTNL,
14497         },
14498         {
14499                 .cmd = NL80211_CMD_DEL_STATION,
14500                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14501                 .doit = nl80211_del_station,
14502                 .flags = GENL_UNS_ADMIN_PERM,
14503                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14504                                   NL80211_FLAG_NEED_RTNL,
14505         },
14506         {
14507                 .cmd = NL80211_CMD_GET_MPATH,
14508                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14509                 .doit = nl80211_get_mpath,
14510                 .dumpit = nl80211_dump_mpath,
14511                 .flags = GENL_UNS_ADMIN_PERM,
14512                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14513                                   NL80211_FLAG_NEED_RTNL,
14514         },
14515         {
14516                 .cmd = NL80211_CMD_GET_MPP,
14517                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14518                 .doit = nl80211_get_mpp,
14519                 .dumpit = nl80211_dump_mpp,
14520                 .flags = GENL_UNS_ADMIN_PERM,
14521                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14522                                   NL80211_FLAG_NEED_RTNL,
14523         },
14524         {
14525                 .cmd = NL80211_CMD_SET_MPATH,
14526                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14527                 .doit = nl80211_set_mpath,
14528                 .flags = GENL_UNS_ADMIN_PERM,
14529                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14530                                   NL80211_FLAG_NEED_RTNL,
14531         },
14532         {
14533                 .cmd = NL80211_CMD_NEW_MPATH,
14534                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14535                 .doit = nl80211_new_mpath,
14536                 .flags = GENL_UNS_ADMIN_PERM,
14537                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14538                                   NL80211_FLAG_NEED_RTNL,
14539         },
14540         {
14541                 .cmd = NL80211_CMD_DEL_MPATH,
14542                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14543                 .doit = nl80211_del_mpath,
14544                 .flags = GENL_UNS_ADMIN_PERM,
14545                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14546                                   NL80211_FLAG_NEED_RTNL,
14547         },
14548         {
14549                 .cmd = NL80211_CMD_SET_BSS,
14550                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14551                 .doit = nl80211_set_bss,
14552                 .flags = GENL_UNS_ADMIN_PERM,
14553                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14554                                   NL80211_FLAG_NEED_RTNL,
14555         },
14556         {
14557                 .cmd = NL80211_CMD_GET_REG,
14558                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14559                 .doit = nl80211_get_reg_do,
14560                 .dumpit = nl80211_get_reg_dump,
14561                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14562                 /* can be retrieved by unprivileged users */
14563         },
14564 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14565         {
14566                 .cmd = NL80211_CMD_SET_REG,
14567                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14568                 .doit = nl80211_set_reg,
14569                 .flags = GENL_ADMIN_PERM,
14570                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14571         },
14572 #endif
14573         {
14574                 .cmd = NL80211_CMD_REQ_SET_REG,
14575                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14576                 .doit = nl80211_req_set_reg,
14577                 .flags = GENL_ADMIN_PERM,
14578         },
14579         {
14580                 .cmd = NL80211_CMD_RELOAD_REGDB,
14581                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14582                 .doit = nl80211_reload_regdb,
14583                 .flags = GENL_ADMIN_PERM,
14584         },
14585         {
14586                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14587                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14588                 .doit = nl80211_get_mesh_config,
14589                 /* can be retrieved by unprivileged users */
14590                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14591                                   NL80211_FLAG_NEED_RTNL,
14592         },
14593         {
14594                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14595                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14596                 .doit = nl80211_update_mesh_config,
14597                 .flags = GENL_UNS_ADMIN_PERM,
14598                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14599                                   NL80211_FLAG_NEED_RTNL,
14600         },
14601         {
14602                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14603                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14604                 .doit = nl80211_trigger_scan,
14605                 .flags = GENL_UNS_ADMIN_PERM,
14606                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14607                                   NL80211_FLAG_NEED_RTNL,
14608         },
14609         {
14610                 .cmd = NL80211_CMD_ABORT_SCAN,
14611                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14612                 .doit = nl80211_abort_scan,
14613                 .flags = GENL_UNS_ADMIN_PERM,
14614                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14615                                   NL80211_FLAG_NEED_RTNL,
14616         },
14617         {
14618                 .cmd = NL80211_CMD_GET_SCAN,
14619                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14620                 .dumpit = nl80211_dump_scan,
14621         },
14622         {
14623                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14624                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14625                 .doit = nl80211_start_sched_scan,
14626                 .flags = GENL_UNS_ADMIN_PERM,
14627                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14628                                   NL80211_FLAG_NEED_RTNL,
14629         },
14630         {
14631                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14632                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14633                 .doit = nl80211_stop_sched_scan,
14634                 .flags = GENL_UNS_ADMIN_PERM,
14635                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14636                                   NL80211_FLAG_NEED_RTNL,
14637         },
14638         {
14639                 .cmd = NL80211_CMD_AUTHENTICATE,
14640                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14641                 .doit = nl80211_authenticate,
14642                 .flags = GENL_UNS_ADMIN_PERM,
14643                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14644                                   NL80211_FLAG_NEED_RTNL |
14645                                   NL80211_FLAG_CLEAR_SKB,
14646         },
14647         {
14648                 .cmd = NL80211_CMD_ASSOCIATE,
14649                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14650                 .doit = nl80211_associate,
14651                 .flags = GENL_UNS_ADMIN_PERM,
14652                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14653                                   NL80211_FLAG_NEED_RTNL |
14654                                   NL80211_FLAG_CLEAR_SKB,
14655         },
14656         {
14657                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14658                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14659                 .doit = nl80211_deauthenticate,
14660                 .flags = GENL_UNS_ADMIN_PERM,
14661                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14662                                   NL80211_FLAG_NEED_RTNL,
14663         },
14664         {
14665                 .cmd = NL80211_CMD_DISASSOCIATE,
14666                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14667                 .doit = nl80211_disassociate,
14668                 .flags = GENL_UNS_ADMIN_PERM,
14669                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14670                                   NL80211_FLAG_NEED_RTNL,
14671         },
14672         {
14673                 .cmd = NL80211_CMD_JOIN_IBSS,
14674                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14675                 .doit = nl80211_join_ibss,
14676                 .flags = GENL_UNS_ADMIN_PERM,
14677                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14678                                   NL80211_FLAG_NEED_RTNL,
14679         },
14680         {
14681                 .cmd = NL80211_CMD_LEAVE_IBSS,
14682                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14683                 .doit = nl80211_leave_ibss,
14684                 .flags = GENL_UNS_ADMIN_PERM,
14685                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14686                                   NL80211_FLAG_NEED_RTNL,
14687         },
14688 #ifdef CONFIG_NL80211_TESTMODE
14689         {
14690                 .cmd = NL80211_CMD_TESTMODE,
14691                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14692                 .doit = nl80211_testmode_do,
14693                 .dumpit = nl80211_testmode_dump,
14694                 .flags = GENL_UNS_ADMIN_PERM,
14695                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14696                                   NL80211_FLAG_NEED_RTNL,
14697         },
14698 #endif
14699         {
14700                 .cmd = NL80211_CMD_CONNECT,
14701                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14702                 .doit = nl80211_connect,
14703                 .flags = GENL_UNS_ADMIN_PERM,
14704                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14705                                   NL80211_FLAG_NEED_RTNL |
14706                                   NL80211_FLAG_CLEAR_SKB,
14707         },
14708         {
14709                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14710                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14711                 .doit = nl80211_update_connect_params,
14712                 .flags = GENL_ADMIN_PERM,
14713                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14714                                   NL80211_FLAG_NEED_RTNL |
14715                                   NL80211_FLAG_CLEAR_SKB,
14716         },
14717         {
14718                 .cmd = NL80211_CMD_DISCONNECT,
14719                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14720                 .doit = nl80211_disconnect,
14721                 .flags = GENL_UNS_ADMIN_PERM,
14722                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14723                                   NL80211_FLAG_NEED_RTNL,
14724         },
14725         {
14726                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14727                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14728                 .doit = nl80211_wiphy_netns,
14729                 .flags = GENL_UNS_ADMIN_PERM,
14730                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14731                                   NL80211_FLAG_NEED_RTNL,
14732         },
14733         {
14734                 .cmd = NL80211_CMD_GET_SURVEY,
14735                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14736                 .dumpit = nl80211_dump_survey,
14737         },
14738         {
14739                 .cmd = NL80211_CMD_SET_PMKSA,
14740                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14741                 .doit = nl80211_setdel_pmksa,
14742                 .flags = GENL_UNS_ADMIN_PERM,
14743                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14744                                   NL80211_FLAG_NEED_RTNL |
14745                                   NL80211_FLAG_CLEAR_SKB,
14746         },
14747         {
14748                 .cmd = NL80211_CMD_DEL_PMKSA,
14749                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14750                 .doit = nl80211_setdel_pmksa,
14751                 .flags = GENL_UNS_ADMIN_PERM,
14752                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14753                                   NL80211_FLAG_NEED_RTNL,
14754         },
14755         {
14756                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14757                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14758                 .doit = nl80211_flush_pmksa,
14759                 .flags = GENL_UNS_ADMIN_PERM,
14760                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14761                                   NL80211_FLAG_NEED_RTNL,
14762         },
14763         {
14764                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14765                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14766                 .doit = nl80211_remain_on_channel,
14767                 .flags = GENL_UNS_ADMIN_PERM,
14768                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14769                                   NL80211_FLAG_NEED_RTNL,
14770         },
14771         {
14772                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14773                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14774                 .doit = nl80211_cancel_remain_on_channel,
14775                 .flags = GENL_UNS_ADMIN_PERM,
14776                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14777                                   NL80211_FLAG_NEED_RTNL,
14778         },
14779         {
14780                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14781                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14782                 .doit = nl80211_set_tx_bitrate_mask,
14783                 .flags = GENL_UNS_ADMIN_PERM,
14784                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14785                                   NL80211_FLAG_NEED_RTNL,
14786         },
14787         {
14788                 .cmd = NL80211_CMD_REGISTER_FRAME,
14789                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14790                 .doit = nl80211_register_mgmt,
14791                 .flags = GENL_UNS_ADMIN_PERM,
14792                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14793                                   NL80211_FLAG_NEED_RTNL,
14794         },
14795         {
14796                 .cmd = NL80211_CMD_FRAME,
14797                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14798                 .doit = nl80211_tx_mgmt,
14799                 .flags = GENL_UNS_ADMIN_PERM,
14800                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14801                                   NL80211_FLAG_NEED_RTNL,
14802         },
14803         {
14804                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14805                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14806                 .doit = nl80211_tx_mgmt_cancel_wait,
14807                 .flags = GENL_UNS_ADMIN_PERM,
14808                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14809                                   NL80211_FLAG_NEED_RTNL,
14810         },
14811         {
14812                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14813                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14814                 .doit = nl80211_set_power_save,
14815                 .flags = GENL_UNS_ADMIN_PERM,
14816                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14817                                   NL80211_FLAG_NEED_RTNL,
14818         },
14819         {
14820                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14821                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14822                 .doit = nl80211_get_power_save,
14823                 /* can be retrieved by unprivileged users */
14824                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14825                                   NL80211_FLAG_NEED_RTNL,
14826         },
14827         {
14828                 .cmd = NL80211_CMD_SET_CQM,
14829                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14830                 .doit = nl80211_set_cqm,
14831                 .flags = GENL_UNS_ADMIN_PERM,
14832                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14833                                   NL80211_FLAG_NEED_RTNL,
14834         },
14835         {
14836                 .cmd = NL80211_CMD_SET_CHANNEL,
14837                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14838                 .doit = nl80211_set_channel,
14839                 .flags = GENL_UNS_ADMIN_PERM,
14840                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14841                                   NL80211_FLAG_NEED_RTNL,
14842         },
14843         {
14844                 .cmd = NL80211_CMD_SET_WDS_PEER,
14845                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14846                 .doit = nl80211_set_wds_peer,
14847                 .flags = GENL_UNS_ADMIN_PERM,
14848                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14849                                   NL80211_FLAG_NEED_RTNL,
14850         },
14851         {
14852                 .cmd = NL80211_CMD_JOIN_MESH,
14853                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14854                 .doit = nl80211_join_mesh,
14855                 .flags = GENL_UNS_ADMIN_PERM,
14856                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14857                                   NL80211_FLAG_NEED_RTNL,
14858         },
14859         {
14860                 .cmd = NL80211_CMD_LEAVE_MESH,
14861                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14862                 .doit = nl80211_leave_mesh,
14863                 .flags = GENL_UNS_ADMIN_PERM,
14864                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14865                                   NL80211_FLAG_NEED_RTNL,
14866         },
14867         {
14868                 .cmd = NL80211_CMD_JOIN_OCB,
14869                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14870                 .doit = nl80211_join_ocb,
14871                 .flags = GENL_UNS_ADMIN_PERM,
14872                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14873                                   NL80211_FLAG_NEED_RTNL,
14874         },
14875         {
14876                 .cmd = NL80211_CMD_LEAVE_OCB,
14877                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14878                 .doit = nl80211_leave_ocb,
14879                 .flags = GENL_UNS_ADMIN_PERM,
14880                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14881                                   NL80211_FLAG_NEED_RTNL,
14882         },
14883 #ifdef CONFIG_PM
14884         {
14885                 .cmd = NL80211_CMD_GET_WOWLAN,
14886                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14887                 .doit = nl80211_get_wowlan,
14888                 /* can be retrieved by unprivileged users */
14889                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14890                                   NL80211_FLAG_NEED_RTNL,
14891         },
14892         {
14893                 .cmd = NL80211_CMD_SET_WOWLAN,
14894                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14895                 .doit = nl80211_set_wowlan,
14896                 .flags = GENL_UNS_ADMIN_PERM,
14897                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14898                                   NL80211_FLAG_NEED_RTNL,
14899         },
14900 #endif
14901         {
14902                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14903                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14904                 .doit = nl80211_set_rekey_data,
14905                 .flags = GENL_UNS_ADMIN_PERM,
14906                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14907                                   NL80211_FLAG_NEED_RTNL |
14908                                   NL80211_FLAG_CLEAR_SKB,
14909         },
14910         {
14911                 .cmd = NL80211_CMD_TDLS_MGMT,
14912                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14913                 .doit = nl80211_tdls_mgmt,
14914                 .flags = GENL_UNS_ADMIN_PERM,
14915                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14916                                   NL80211_FLAG_NEED_RTNL,
14917         },
14918         {
14919                 .cmd = NL80211_CMD_TDLS_OPER,
14920                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14921                 .doit = nl80211_tdls_oper,
14922                 .flags = GENL_UNS_ADMIN_PERM,
14923                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14924                                   NL80211_FLAG_NEED_RTNL,
14925         },
14926         {
14927                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14928                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14929                 .doit = nl80211_register_unexpected_frame,
14930                 .flags = GENL_UNS_ADMIN_PERM,
14931                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14932                                   NL80211_FLAG_NEED_RTNL,
14933         },
14934         {
14935                 .cmd = NL80211_CMD_PROBE_CLIENT,
14936                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14937                 .doit = nl80211_probe_client,
14938                 .flags = GENL_UNS_ADMIN_PERM,
14939                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14940                                   NL80211_FLAG_NEED_RTNL,
14941         },
14942         {
14943                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14944                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14945                 .doit = nl80211_register_beacons,
14946                 .flags = GENL_UNS_ADMIN_PERM,
14947                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14948                                   NL80211_FLAG_NEED_RTNL,
14949         },
14950         {
14951                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14952                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14953                 .doit = nl80211_set_noack_map,
14954                 .flags = GENL_UNS_ADMIN_PERM,
14955                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14956                                   NL80211_FLAG_NEED_RTNL,
14957         },
14958         {
14959                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14960                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14961                 .doit = nl80211_start_p2p_device,
14962                 .flags = GENL_UNS_ADMIN_PERM,
14963                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14964                                   NL80211_FLAG_NEED_RTNL,
14965         },
14966         {
14967                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14968                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14969                 .doit = nl80211_stop_p2p_device,
14970                 .flags = GENL_UNS_ADMIN_PERM,
14971                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14972                                   NL80211_FLAG_NEED_RTNL,
14973         },
14974         {
14975                 .cmd = NL80211_CMD_START_NAN,
14976                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14977                 .doit = nl80211_start_nan,
14978                 .flags = GENL_ADMIN_PERM,
14979                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14980                                   NL80211_FLAG_NEED_RTNL,
14981         },
14982         {
14983                 .cmd = NL80211_CMD_STOP_NAN,
14984                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14985                 .doit = nl80211_stop_nan,
14986                 .flags = GENL_ADMIN_PERM,
14987                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14988                                   NL80211_FLAG_NEED_RTNL,
14989         },
14990         {
14991                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14992                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14993                 .doit = nl80211_nan_add_func,
14994                 .flags = GENL_ADMIN_PERM,
14995                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14996                                   NL80211_FLAG_NEED_RTNL,
14997         },
14998         {
14999                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15000                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15001                 .doit = nl80211_nan_del_func,
15002                 .flags = GENL_ADMIN_PERM,
15003                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15004                                   NL80211_FLAG_NEED_RTNL,
15005         },
15006         {
15007                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15008                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15009                 .doit = nl80211_nan_change_config,
15010                 .flags = GENL_ADMIN_PERM,
15011                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15012                                   NL80211_FLAG_NEED_RTNL,
15013         },
15014         {
15015                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15016                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15017                 .doit = nl80211_set_mcast_rate,
15018                 .flags = GENL_UNS_ADMIN_PERM,
15019                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15020                                   NL80211_FLAG_NEED_RTNL,
15021         },
15022         {
15023                 .cmd = NL80211_CMD_SET_MAC_ACL,
15024                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15025                 .doit = nl80211_set_mac_acl,
15026                 .flags = GENL_UNS_ADMIN_PERM,
15027                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15028                                   NL80211_FLAG_NEED_RTNL,
15029         },
15030         {
15031                 .cmd = NL80211_CMD_RADAR_DETECT,
15032                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15033                 .doit = nl80211_start_radar_detection,
15034                 .flags = GENL_UNS_ADMIN_PERM,
15035                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15036                                   NL80211_FLAG_NEED_RTNL,
15037         },
15038         {
15039                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15040                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15041                 .doit = nl80211_get_protocol_features,
15042         },
15043         {
15044                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15045                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15046                 .doit = nl80211_update_ft_ies,
15047                 .flags = GENL_UNS_ADMIN_PERM,
15048                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15049                                   NL80211_FLAG_NEED_RTNL,
15050         },
15051         {
15052                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15053                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15054                 .doit = nl80211_crit_protocol_start,
15055                 .flags = GENL_UNS_ADMIN_PERM,
15056                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15057                                   NL80211_FLAG_NEED_RTNL,
15058         },
15059         {
15060                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15061                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15062                 .doit = nl80211_crit_protocol_stop,
15063                 .flags = GENL_UNS_ADMIN_PERM,
15064                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15065                                   NL80211_FLAG_NEED_RTNL,
15066         },
15067         {
15068                 .cmd = NL80211_CMD_GET_COALESCE,
15069                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15070                 .doit = nl80211_get_coalesce,
15071                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15072                                   NL80211_FLAG_NEED_RTNL,
15073         },
15074         {
15075                 .cmd = NL80211_CMD_SET_COALESCE,
15076                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15077                 .doit = nl80211_set_coalesce,
15078                 .flags = GENL_UNS_ADMIN_PERM,
15079                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15080                                   NL80211_FLAG_NEED_RTNL,
15081         },
15082         {
15083                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15084                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15085                 .doit = nl80211_channel_switch,
15086                 .flags = GENL_UNS_ADMIN_PERM,
15087                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15088                                   NL80211_FLAG_NEED_RTNL,
15089         },
15090         {
15091                 .cmd = NL80211_CMD_VENDOR,
15092                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15093                 .doit = nl80211_vendor_cmd,
15094                 .dumpit = nl80211_vendor_cmd_dump,
15095                 .flags = GENL_UNS_ADMIN_PERM,
15096                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15097                                   NL80211_FLAG_NEED_RTNL |
15098                                   NL80211_FLAG_CLEAR_SKB,
15099         },
15100         {
15101                 .cmd = NL80211_CMD_SET_QOS_MAP,
15102                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15103                 .doit = nl80211_set_qos_map,
15104                 .flags = GENL_UNS_ADMIN_PERM,
15105                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15106                                   NL80211_FLAG_NEED_RTNL,
15107         },
15108         {
15109                 .cmd = NL80211_CMD_ADD_TX_TS,
15110                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15111                 .doit = nl80211_add_tx_ts,
15112                 .flags = GENL_UNS_ADMIN_PERM,
15113                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15114                                   NL80211_FLAG_NEED_RTNL,
15115         },
15116         {
15117                 .cmd = NL80211_CMD_DEL_TX_TS,
15118                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15119                 .doit = nl80211_del_tx_ts,
15120                 .flags = GENL_UNS_ADMIN_PERM,
15121                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15122                                   NL80211_FLAG_NEED_RTNL,
15123         },
15124         {
15125                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15126                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15127                 .doit = nl80211_tdls_channel_switch,
15128                 .flags = GENL_UNS_ADMIN_PERM,
15129                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15130                                   NL80211_FLAG_NEED_RTNL,
15131         },
15132         {
15133                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15134                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15135                 .doit = nl80211_tdls_cancel_channel_switch,
15136                 .flags = GENL_UNS_ADMIN_PERM,
15137                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15138                                   NL80211_FLAG_NEED_RTNL,
15139         },
15140         {
15141                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15142                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15143                 .doit = nl80211_set_multicast_to_unicast,
15144                 .flags = GENL_UNS_ADMIN_PERM,
15145                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15146                                   NL80211_FLAG_NEED_RTNL,
15147         },
15148         {
15149                 .cmd = NL80211_CMD_SET_PMK,
15150                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15151                 .doit = nl80211_set_pmk,
15152                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15153                                   NL80211_FLAG_NEED_RTNL |
15154                                   NL80211_FLAG_CLEAR_SKB,
15155         },
15156         {
15157                 .cmd = NL80211_CMD_DEL_PMK,
15158                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15159                 .doit = nl80211_del_pmk,
15160                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15161                                   NL80211_FLAG_NEED_RTNL,
15162         },
15163         {
15164                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15165                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15166                 .doit = nl80211_external_auth,
15167                 .flags = GENL_ADMIN_PERM,
15168                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15169                                   NL80211_FLAG_NEED_RTNL,
15170         },
15171         {
15172                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15173                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15174                 .doit = nl80211_tx_control_port,
15175                 .flags = GENL_UNS_ADMIN_PERM,
15176                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15177                                   NL80211_FLAG_NEED_RTNL,
15178         },
15179         {
15180                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15181                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15182                 .doit = nl80211_get_ftm_responder_stats,
15183                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15184                                   NL80211_FLAG_NEED_RTNL,
15185         },
15186         {
15187                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15188                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15189                 .doit = nl80211_pmsr_start,
15190                 .flags = GENL_UNS_ADMIN_PERM,
15191                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15192                                   NL80211_FLAG_NEED_RTNL,
15193         },
15194         {
15195                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15196                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15197                 .doit = nl80211_notify_radar_detection,
15198                 .flags = GENL_UNS_ADMIN_PERM,
15199                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15200                                   NL80211_FLAG_NEED_RTNL,
15201         },
15202         {
15203                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15204                 .doit = nl80211_update_owe_info,
15205                 .flags = GENL_ADMIN_PERM,
15206                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15207                                   NL80211_FLAG_NEED_RTNL,
15208         },
15209         {
15210                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15211                 .doit = nl80211_probe_mesh_link,
15212                 .flags = GENL_UNS_ADMIN_PERM,
15213                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15214                                   NL80211_FLAG_NEED_RTNL,
15215         },
15216         {
15217                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15218                 .doit = nl80211_set_tid_config,
15219                 .flags = GENL_UNS_ADMIN_PERM,
15220                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15221                                   NL80211_FLAG_NEED_RTNL,
15222         },
15223 };
15224
15225 static struct genl_family nl80211_fam __ro_after_init = {
15226         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15227         .hdrsize = 0,                   /* no private header */
15228         .version = 1,                   /* no particular meaning now */
15229         .maxattr = NL80211_ATTR_MAX,
15230         .policy = nl80211_policy,
15231         .netnsok = true,
15232         .pre_doit = nl80211_pre_doit,
15233         .post_doit = nl80211_post_doit,
15234         .module = THIS_MODULE,
15235         .ops = nl80211_ops,
15236         .n_ops = ARRAY_SIZE(nl80211_ops),
15237         .mcgrps = nl80211_mcgrps,
15238         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15239         .parallel_ops = true,
15240 };
15241
15242 /* notification functions */
15243
15244 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15245                           enum nl80211_commands cmd)
15246 {
15247         struct sk_buff *msg;
15248         struct nl80211_dump_wiphy_state state = {};
15249
15250         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15251                 cmd != NL80211_CMD_DEL_WIPHY);
15252
15253         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15254         if (!msg)
15255                 return;
15256
15257         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15258                 nlmsg_free(msg);
15259                 return;
15260         }
15261
15262         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15263                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15264 }
15265
15266 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15267                                 struct wireless_dev *wdev,
15268                                 enum nl80211_commands cmd)
15269 {
15270         struct sk_buff *msg;
15271
15272         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15273         if (!msg)
15274                 return;
15275
15276         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15277                 nlmsg_free(msg);
15278                 return;
15279         }
15280
15281         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15282                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15283 }
15284
15285 static int nl80211_add_scan_req(struct sk_buff *msg,
15286                                 struct cfg80211_registered_device *rdev)
15287 {
15288         struct cfg80211_scan_request *req = rdev->scan_req;
15289         struct nlattr *nest;
15290         int i;
15291
15292         if (WARN_ON(!req))
15293                 return 0;
15294
15295         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15296         if (!nest)
15297                 goto nla_put_failure;
15298         for (i = 0; i < req->n_ssids; i++) {
15299                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15300                         goto nla_put_failure;
15301         }
15302         nla_nest_end(msg, nest);
15303
15304         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15305                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15306                 if (!nest)
15307                         goto nla_put_failure;
15308                 for (i = 0; i < req->n_channels; i++) {
15309                         if (nla_put_u32(msg, i,
15310                                    ieee80211_channel_to_khz(req->channels[i])))
15311                                 goto nla_put_failure;
15312                 }
15313                 nla_nest_end(msg, nest);
15314         } else {
15315                 nest = nla_nest_start_noflag(msg,
15316                                              NL80211_ATTR_SCAN_FREQUENCIES);
15317                 if (!nest)
15318                         goto nla_put_failure;
15319                 for (i = 0; i < req->n_channels; i++) {
15320                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15321                                 goto nla_put_failure;
15322                 }
15323                 nla_nest_end(msg, nest);
15324         }
15325
15326         if (req->ie &&
15327             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15328                 goto nla_put_failure;
15329
15330         if (req->flags &&
15331             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15332                 goto nla_put_failure;
15333
15334         if (req->info.scan_start_tsf &&
15335             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15336                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
15337              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15338                      req->info.tsf_bssid)))
15339                 goto nla_put_failure;
15340
15341         return 0;
15342  nla_put_failure:
15343         return -ENOBUFS;
15344 }
15345
15346 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15347                                  struct cfg80211_registered_device *rdev,
15348                                  struct wireless_dev *wdev,
15349                                  u32 portid, u32 seq, int flags,
15350                                  u32 cmd)
15351 {
15352         void *hdr;
15353
15354         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15355         if (!hdr)
15356                 return -1;
15357
15358         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15359             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15360                                          wdev->netdev->ifindex)) ||
15361             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15362                               NL80211_ATTR_PAD))
15363                 goto nla_put_failure;
15364
15365         /* ignore errors and send incomplete event anyway */
15366         nl80211_add_scan_req(msg, rdev);
15367
15368         genlmsg_end(msg, hdr);
15369         return 0;
15370
15371  nla_put_failure:
15372         genlmsg_cancel(msg, hdr);
15373         return -EMSGSIZE;
15374 }
15375
15376 static int
15377 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15378                             struct cfg80211_sched_scan_request *req, u32 cmd)
15379 {
15380         void *hdr;
15381
15382         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15383         if (!hdr)
15384                 return -1;
15385
15386         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15387                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15388             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15389             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15390                               NL80211_ATTR_PAD))
15391                 goto nla_put_failure;
15392
15393         genlmsg_end(msg, hdr);
15394         return 0;
15395
15396  nla_put_failure:
15397         genlmsg_cancel(msg, hdr);
15398         return -EMSGSIZE;
15399 }
15400
15401 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15402                              struct wireless_dev *wdev)
15403 {
15404         struct sk_buff *msg;
15405
15406         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15407         if (!msg)
15408                 return;
15409
15410         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15411                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15412                 nlmsg_free(msg);
15413                 return;
15414         }
15415
15416         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15417                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15418 }
15419
15420 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15421                                        struct wireless_dev *wdev, bool aborted)
15422 {
15423         struct sk_buff *msg;
15424
15425         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15426         if (!msg)
15427                 return NULL;
15428
15429         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15430                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15431                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15432                 nlmsg_free(msg);
15433                 return NULL;
15434         }
15435
15436         return msg;
15437 }
15438
15439 /* send message created by nl80211_build_scan_msg() */
15440 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15441                            struct sk_buff *msg)
15442 {
15443         if (!msg)
15444                 return;
15445
15446         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15447                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15448 }
15449
15450 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15451 {
15452         struct sk_buff *msg;
15453
15454         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15455         if (!msg)
15456                 return;
15457
15458         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15459                 nlmsg_free(msg);
15460                 return;
15461         }
15462
15463         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15464                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15465 }
15466
15467 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15468                                           struct regulatory_request *request)
15469 {
15470         /* Userspace can always count this one always being set */
15471         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15472                 goto nla_put_failure;
15473
15474         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15475                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15476                                NL80211_REGDOM_TYPE_WORLD))
15477                         goto nla_put_failure;
15478         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15479                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15480                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15481                         goto nla_put_failure;
15482         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15483                    request->intersect) {
15484                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15485                                NL80211_REGDOM_TYPE_INTERSECTION))
15486                         goto nla_put_failure;
15487         } else {
15488                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15489                                NL80211_REGDOM_TYPE_COUNTRY) ||
15490                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15491                                    request->alpha2))
15492                         goto nla_put_failure;
15493         }
15494
15495         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15496                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15497
15498                 if (wiphy &&
15499                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15500                         goto nla_put_failure;
15501
15502                 if (wiphy &&
15503                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15504                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15505                         goto nla_put_failure;
15506         }
15507
15508         return true;
15509
15510 nla_put_failure:
15511         return false;
15512 }
15513
15514 /*
15515  * This can happen on global regulatory changes or device specific settings
15516  * based on custom regulatory domains.
15517  */
15518 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15519                                      struct regulatory_request *request)
15520 {
15521         struct sk_buff *msg;
15522         void *hdr;
15523
15524         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15525         if (!msg)
15526                 return;
15527
15528         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15529         if (!hdr)
15530                 goto nla_put_failure;
15531
15532         if (!nl80211_reg_change_event_fill(msg, request))
15533                 goto nla_put_failure;
15534
15535         genlmsg_end(msg, hdr);
15536
15537         rcu_read_lock();
15538         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15539                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15540         rcu_read_unlock();
15541
15542         return;
15543
15544 nla_put_failure:
15545         nlmsg_free(msg);
15546 }
15547
15548 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15549                                     struct net_device *netdev,
15550                                     const u8 *buf, size_t len,
15551                                     enum nl80211_commands cmd, gfp_t gfp,
15552                                     int uapsd_queues, const u8 *req_ies,
15553                                     size_t req_ies_len)
15554 {
15555         struct sk_buff *msg;
15556         void *hdr;
15557
15558         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15559         if (!msg)
15560                 return;
15561
15562         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15563         if (!hdr) {
15564                 nlmsg_free(msg);
15565                 return;
15566         }
15567
15568         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15569             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15570             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15571             (req_ies &&
15572              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15573                 goto nla_put_failure;
15574
15575         if (uapsd_queues >= 0) {
15576                 struct nlattr *nla_wmm =
15577                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15578                 if (!nla_wmm)
15579                         goto nla_put_failure;
15580
15581                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15582                                uapsd_queues))
15583                         goto nla_put_failure;
15584
15585                 nla_nest_end(msg, nla_wmm);
15586         }
15587
15588         genlmsg_end(msg, hdr);
15589
15590         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15591                                 NL80211_MCGRP_MLME, gfp);
15592         return;
15593
15594  nla_put_failure:
15595         nlmsg_free(msg);
15596 }
15597
15598 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15599                           struct net_device *netdev, const u8 *buf,
15600                           size_t len, gfp_t gfp)
15601 {
15602         nl80211_send_mlme_event(rdev, netdev, buf, len,
15603                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15604 }
15605
15606 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15607                            struct net_device *netdev, const u8 *buf,
15608                            size_t len, gfp_t gfp, int uapsd_queues,
15609                            const u8 *req_ies, size_t req_ies_len)
15610 {
15611         nl80211_send_mlme_event(rdev, netdev, buf, len,
15612                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15613                                 req_ies, req_ies_len);
15614 }
15615
15616 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15617                          struct net_device *netdev, const u8 *buf,
15618                          size_t len, gfp_t gfp)
15619 {
15620         nl80211_send_mlme_event(rdev, netdev, buf, len,
15621                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15622 }
15623
15624 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15625                            struct net_device *netdev, const u8 *buf,
15626                            size_t len, gfp_t gfp)
15627 {
15628         nl80211_send_mlme_event(rdev, netdev, buf, len,
15629                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15630 }
15631
15632 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15633                                   size_t len)
15634 {
15635         struct wireless_dev *wdev = dev->ieee80211_ptr;
15636         struct wiphy *wiphy = wdev->wiphy;
15637         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15638         const struct ieee80211_mgmt *mgmt = (void *)buf;
15639         u32 cmd;
15640
15641         if (WARN_ON(len < 2))
15642                 return;
15643
15644         if (ieee80211_is_deauth(mgmt->frame_control)) {
15645                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15646         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15647                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15648         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15649                 if (wdev->unprot_beacon_reported &&
15650                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15651                         return;
15652                 cmd = NL80211_CMD_UNPROT_BEACON;
15653                 wdev->unprot_beacon_reported = jiffies;
15654         } else {
15655                 return;
15656         }
15657
15658         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15659         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15660                                 NULL, 0);
15661 }
15662 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15663
15664 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15665                                       struct net_device *netdev, int cmd,
15666                                       const u8 *addr, gfp_t gfp)
15667 {
15668         struct sk_buff *msg;
15669         void *hdr;
15670
15671         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15672         if (!msg)
15673                 return;
15674
15675         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15676         if (!hdr) {
15677                 nlmsg_free(msg);
15678                 return;
15679         }
15680
15681         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15682             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15683             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15684             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15685                 goto nla_put_failure;
15686
15687         genlmsg_end(msg, hdr);
15688
15689         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15690                                 NL80211_MCGRP_MLME, gfp);
15691         return;
15692
15693  nla_put_failure:
15694         nlmsg_free(msg);
15695 }
15696
15697 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15698                                struct net_device *netdev, const u8 *addr,
15699                                gfp_t gfp)
15700 {
15701         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15702                                   addr, gfp);
15703 }
15704
15705 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15706                                 struct net_device *netdev, const u8 *addr,
15707                                 gfp_t gfp)
15708 {
15709         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15710                                   addr, gfp);
15711 }
15712
15713 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15714                                  struct net_device *netdev,
15715                                  struct cfg80211_connect_resp_params *cr,
15716                                  gfp_t gfp)
15717 {
15718         struct sk_buff *msg;
15719         void *hdr;
15720
15721         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15722                         cr->fils.kek_len + cr->fils.pmk_len +
15723                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15724         if (!msg)
15725                 return;
15726
15727         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15728         if (!hdr) {
15729                 nlmsg_free(msg);
15730                 return;
15731         }
15732
15733         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15734             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15735             (cr->bssid &&
15736              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15737             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15738                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15739                         cr->status) ||
15740             (cr->status < 0 &&
15741              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15742               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15743                           cr->timeout_reason))) ||
15744             (cr->req_ie &&
15745              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15746             (cr->resp_ie &&
15747              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15748                      cr->resp_ie)) ||
15749             (cr->fils.update_erp_next_seq_num &&
15750              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15751                          cr->fils.erp_next_seq_num)) ||
15752             (cr->status == WLAN_STATUS_SUCCESS &&
15753              ((cr->fils.kek &&
15754                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15755                        cr->fils.kek)) ||
15756               (cr->fils.pmk &&
15757                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15758               (cr->fils.pmkid &&
15759                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15760                 goto nla_put_failure;
15761
15762         genlmsg_end(msg, hdr);
15763
15764         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15765                                 NL80211_MCGRP_MLME, gfp);
15766         return;
15767
15768  nla_put_failure:
15769         nlmsg_free(msg);
15770 }
15771
15772 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15773                          struct net_device *netdev,
15774                          struct cfg80211_roam_info *info, gfp_t gfp)
15775 {
15776         struct sk_buff *msg;
15777         void *hdr;
15778         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15779
15780         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15781                         info->fils.kek_len + info->fils.pmk_len +
15782                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15783         if (!msg)
15784                 return;
15785
15786         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15787         if (!hdr) {
15788                 nlmsg_free(msg);
15789                 return;
15790         }
15791
15792         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15793             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15794             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15795             (info->req_ie &&
15796              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15797                      info->req_ie)) ||
15798             (info->resp_ie &&
15799              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15800                      info->resp_ie)) ||
15801             (info->fils.update_erp_next_seq_num &&
15802              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15803                          info->fils.erp_next_seq_num)) ||
15804             (info->fils.kek &&
15805              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15806                      info->fils.kek)) ||
15807             (info->fils.pmk &&
15808              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15809             (info->fils.pmkid &&
15810              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15811                 goto nla_put_failure;
15812
15813         genlmsg_end(msg, hdr);
15814
15815         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15816                                 NL80211_MCGRP_MLME, gfp);
15817         return;
15818
15819  nla_put_failure:
15820         nlmsg_free(msg);
15821 }
15822
15823 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15824                                   struct net_device *netdev, const u8 *bssid)
15825 {
15826         struct sk_buff *msg;
15827         void *hdr;
15828
15829         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15830         if (!msg)
15831                 return;
15832
15833         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15834         if (!hdr) {
15835                 nlmsg_free(msg);
15836                 return;
15837         }
15838
15839         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15840             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15841             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15842                 goto nla_put_failure;
15843
15844         genlmsg_end(msg, hdr);
15845
15846         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15847                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15848         return;
15849
15850  nla_put_failure:
15851         nlmsg_free(msg);
15852 }
15853
15854 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15855                                struct net_device *netdev, u16 reason,
15856                                const u8 *ie, size_t ie_len, bool from_ap)
15857 {
15858         struct sk_buff *msg;
15859         void *hdr;
15860
15861         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15862         if (!msg)
15863                 return;
15864
15865         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15866         if (!hdr) {
15867                 nlmsg_free(msg);
15868                 return;
15869         }
15870
15871         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15872             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15873             (reason &&
15874              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15875             (from_ap &&
15876              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15877             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15878                 goto nla_put_failure;
15879
15880         genlmsg_end(msg, hdr);
15881
15882         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15883                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15884         return;
15885
15886  nla_put_failure:
15887         nlmsg_free(msg);
15888 }
15889
15890 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15891                              struct net_device *netdev, const u8 *bssid,
15892                              gfp_t gfp)
15893 {
15894         struct sk_buff *msg;
15895         void *hdr;
15896
15897         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15898         if (!msg)
15899                 return;
15900
15901         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15902         if (!hdr) {
15903                 nlmsg_free(msg);
15904                 return;
15905         }
15906
15907         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15908             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15909             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15910                 goto nla_put_failure;
15911
15912         genlmsg_end(msg, hdr);
15913
15914         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15915                                 NL80211_MCGRP_MLME, gfp);
15916         return;
15917
15918  nla_put_failure:
15919         nlmsg_free(msg);
15920 }
15921
15922 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15923                                         const u8 *ie, u8 ie_len,
15924                                         int sig_dbm, gfp_t gfp)
15925 {
15926         struct wireless_dev *wdev = dev->ieee80211_ptr;
15927         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15928         struct sk_buff *msg;
15929         void *hdr;
15930
15931         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15932                 return;
15933
15934         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15935
15936         msg = nlmsg_new(100 + ie_len, gfp);
15937         if (!msg)
15938                 return;
15939
15940         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15941         if (!hdr) {
15942                 nlmsg_free(msg);
15943                 return;
15944         }
15945
15946         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15947             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15948             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15949             (ie_len && ie &&
15950              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15951             (sig_dbm &&
15952              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15953                 goto nla_put_failure;
15954
15955         genlmsg_end(msg, hdr);
15956
15957         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15958                                 NL80211_MCGRP_MLME, gfp);
15959         return;
15960
15961  nla_put_failure:
15962         nlmsg_free(msg);
15963 }
15964 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15965
15966 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15967                                  struct net_device *netdev, const u8 *addr,
15968                                  enum nl80211_key_type key_type, int key_id,
15969                                  const u8 *tsc, gfp_t gfp)
15970 {
15971         struct sk_buff *msg;
15972         void *hdr;
15973
15974         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15975         if (!msg)
15976                 return;
15977
15978         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15979         if (!hdr) {
15980                 nlmsg_free(msg);
15981                 return;
15982         }
15983
15984         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15985             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15986             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15987             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15988             (key_id != -1 &&
15989              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15990             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15991                 goto nla_put_failure;
15992
15993         genlmsg_end(msg, hdr);
15994
15995         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15996                                 NL80211_MCGRP_MLME, gfp);
15997         return;
15998
15999  nla_put_failure:
16000         nlmsg_free(msg);
16001 }
16002
16003 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16004                                     struct ieee80211_channel *channel_before,
16005                                     struct ieee80211_channel *channel_after)
16006 {
16007         struct sk_buff *msg;
16008         void *hdr;
16009         struct nlattr *nl_freq;
16010
16011         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16012         if (!msg)
16013                 return;
16014
16015         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16016         if (!hdr) {
16017                 nlmsg_free(msg);
16018                 return;
16019         }
16020
16021         /*
16022          * Since we are applying the beacon hint to a wiphy we know its
16023          * wiphy_idx is valid
16024          */
16025         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16026                 goto nla_put_failure;
16027
16028         /* Before */
16029         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16030         if (!nl_freq)
16031                 goto nla_put_failure;
16032
16033         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16034                 goto nla_put_failure;
16035         nla_nest_end(msg, nl_freq);
16036
16037         /* After */
16038         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16039         if (!nl_freq)
16040                 goto nla_put_failure;
16041
16042         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16043                 goto nla_put_failure;
16044         nla_nest_end(msg, nl_freq);
16045
16046         genlmsg_end(msg, hdr);
16047
16048         rcu_read_lock();
16049         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16050                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16051         rcu_read_unlock();
16052
16053         return;
16054
16055 nla_put_failure:
16056         nlmsg_free(msg);
16057 }
16058
16059 static void nl80211_send_remain_on_chan_event(
16060         int cmd, struct cfg80211_registered_device *rdev,
16061         struct wireless_dev *wdev, u64 cookie,
16062         struct ieee80211_channel *chan,
16063         unsigned int duration, gfp_t gfp)
16064 {
16065         struct sk_buff *msg;
16066         void *hdr;
16067
16068         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16069         if (!msg)
16070                 return;
16071
16072         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16073         if (!hdr) {
16074                 nlmsg_free(msg);
16075                 return;
16076         }
16077
16078         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16079             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16080                                          wdev->netdev->ifindex)) ||
16081             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16082                               NL80211_ATTR_PAD) ||
16083             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16084             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16085                         NL80211_CHAN_NO_HT) ||
16086             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16087                               NL80211_ATTR_PAD))
16088                 goto nla_put_failure;
16089
16090         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16091             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16092                 goto nla_put_failure;
16093
16094         genlmsg_end(msg, hdr);
16095
16096         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16097                                 NL80211_MCGRP_MLME, gfp);
16098         return;
16099
16100  nla_put_failure:
16101         nlmsg_free(msg);
16102 }
16103
16104 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16105                                struct ieee80211_channel *chan,
16106                                unsigned int duration, gfp_t gfp)
16107 {
16108         struct wiphy *wiphy = wdev->wiphy;
16109         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16110
16111         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16112         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16113                                           rdev, wdev, cookie, chan,
16114                                           duration, gfp);
16115 }
16116 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16117
16118 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16119                                         struct ieee80211_channel *chan,
16120                                         gfp_t gfp)
16121 {
16122         struct wiphy *wiphy = wdev->wiphy;
16123         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16124
16125         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16126         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16127                                           rdev, wdev, cookie, chan, 0, gfp);
16128 }
16129 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16130
16131 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16132                                         struct ieee80211_channel *chan,
16133                                         gfp_t gfp)
16134 {
16135         struct wiphy *wiphy = wdev->wiphy;
16136         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16137
16138         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16139         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16140                                           rdev, wdev, cookie, chan, 0, gfp);
16141 }
16142 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16143
16144 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16145                       struct station_info *sinfo, gfp_t gfp)
16146 {
16147         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16148         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16149         struct sk_buff *msg;
16150
16151         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16152
16153         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16154         if (!msg)
16155                 return;
16156
16157         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16158                                  rdev, dev, mac_addr, sinfo) < 0) {
16159                 nlmsg_free(msg);
16160                 return;
16161         }
16162
16163         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16164                                 NL80211_MCGRP_MLME, gfp);
16165 }
16166 EXPORT_SYMBOL(cfg80211_new_sta);
16167
16168 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16169                             struct station_info *sinfo, gfp_t gfp)
16170 {
16171         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16172         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16173         struct sk_buff *msg;
16174         struct station_info empty_sinfo = {};
16175
16176         if (!sinfo)
16177                 sinfo = &empty_sinfo;
16178
16179         trace_cfg80211_del_sta(dev, mac_addr);
16180
16181         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16182         if (!msg) {
16183                 cfg80211_sinfo_release_content(sinfo);
16184                 return;
16185         }
16186
16187         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16188                                  rdev, dev, mac_addr, sinfo) < 0) {
16189                 nlmsg_free(msg);
16190                 return;
16191         }
16192
16193         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16194                                 NL80211_MCGRP_MLME, gfp);
16195 }
16196 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16197
16198 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16199                           enum nl80211_connect_failed_reason reason,
16200                           gfp_t gfp)
16201 {
16202         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16203         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16204         struct sk_buff *msg;
16205         void *hdr;
16206
16207         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16208         if (!msg)
16209                 return;
16210
16211         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16212         if (!hdr) {
16213                 nlmsg_free(msg);
16214                 return;
16215         }
16216
16217         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16218             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16219             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16220                 goto nla_put_failure;
16221
16222         genlmsg_end(msg, hdr);
16223
16224         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16225                                 NL80211_MCGRP_MLME, gfp);
16226         return;
16227
16228  nla_put_failure:
16229         nlmsg_free(msg);
16230 }
16231 EXPORT_SYMBOL(cfg80211_conn_failed);
16232
16233 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16234                                        const u8 *addr, gfp_t gfp)
16235 {
16236         struct wireless_dev *wdev = dev->ieee80211_ptr;
16237         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16238         struct sk_buff *msg;
16239         void *hdr;
16240         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16241
16242         if (!nlportid)
16243                 return false;
16244
16245         msg = nlmsg_new(100, gfp);
16246         if (!msg)
16247                 return true;
16248
16249         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16250         if (!hdr) {
16251                 nlmsg_free(msg);
16252                 return true;
16253         }
16254
16255         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16256             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16257             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16258                 goto nla_put_failure;
16259
16260         genlmsg_end(msg, hdr);
16261         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16262         return true;
16263
16264  nla_put_failure:
16265         nlmsg_free(msg);
16266         return true;
16267 }
16268
16269 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16270                                 const u8 *addr, gfp_t gfp)
16271 {
16272         struct wireless_dev *wdev = dev->ieee80211_ptr;
16273         bool ret;
16274
16275         trace_cfg80211_rx_spurious_frame(dev, addr);
16276
16277         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16278                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16279                 trace_cfg80211_return_bool(false);
16280                 return false;
16281         }
16282         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16283                                          addr, gfp);
16284         trace_cfg80211_return_bool(ret);
16285         return ret;
16286 }
16287 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16288
16289 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16290                                         const u8 *addr, gfp_t gfp)
16291 {
16292         struct wireless_dev *wdev = dev->ieee80211_ptr;
16293         bool ret;
16294
16295         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16296
16297         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16298                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16299                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16300                 trace_cfg80211_return_bool(false);
16301                 return false;
16302         }
16303         ret = __nl80211_unexpected_frame(dev,
16304                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16305                                          addr, gfp);
16306         trace_cfg80211_return_bool(ret);
16307         return ret;
16308 }
16309 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16310
16311 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16312                       struct wireless_dev *wdev, u32 nlportid,
16313                       int freq, int sig_dbm,
16314                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16315 {
16316         struct net_device *netdev = wdev->netdev;
16317         struct sk_buff *msg;
16318         void *hdr;
16319
16320         msg = nlmsg_new(100 + len, gfp);
16321         if (!msg)
16322                 return -ENOMEM;
16323
16324         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16325         if (!hdr) {
16326                 nlmsg_free(msg);
16327                 return -ENOMEM;
16328         }
16329
16330         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16331             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16332                                         netdev->ifindex)) ||
16333             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16334                               NL80211_ATTR_PAD) ||
16335             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16336             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16337             (sig_dbm &&
16338              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16339             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16340             (flags &&
16341              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16342                 goto nla_put_failure;
16343
16344         genlmsg_end(msg, hdr);
16345
16346         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16347
16348  nla_put_failure:
16349         nlmsg_free(msg);
16350         return -ENOBUFS;
16351 }
16352
16353 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16354                                     const u8 *buf, size_t len, bool ack,
16355                                     gfp_t gfp, enum nl80211_commands command)
16356 {
16357         struct wiphy *wiphy = wdev->wiphy;
16358         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16359         struct net_device *netdev = wdev->netdev;
16360         struct sk_buff *msg;
16361         void *hdr;
16362
16363         if (command == NL80211_CMD_FRAME_TX_STATUS)
16364                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16365         else
16366                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16367
16368         msg = nlmsg_new(100 + len, gfp);
16369         if (!msg)
16370                 return;
16371
16372         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16373         if (!hdr) {
16374                 nlmsg_free(msg);
16375                 return;
16376         }
16377
16378         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16379             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16380                                    netdev->ifindex)) ||
16381             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16382                               NL80211_ATTR_PAD) ||
16383             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16384             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16385                               NL80211_ATTR_PAD) ||
16386             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16387                 goto nla_put_failure;
16388
16389         genlmsg_end(msg, hdr);
16390
16391         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16392                                 NL80211_MCGRP_MLME, gfp);
16393         return;
16394
16395 nla_put_failure:
16396         nlmsg_free(msg);
16397 }
16398
16399 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16400                                      const u8 *buf, size_t len, bool ack,
16401                                      gfp_t gfp)
16402 {
16403         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16404                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16405 }
16406 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16407
16408 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16409                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16410 {
16411         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16412                                 NL80211_CMD_FRAME_TX_STATUS);
16413 }
16414 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16415
16416 static int __nl80211_rx_control_port(struct net_device *dev,
16417                                      struct sk_buff *skb,
16418                                      bool unencrypted, gfp_t gfp)
16419 {
16420         struct wireless_dev *wdev = dev->ieee80211_ptr;
16421         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16422         struct ethhdr *ehdr = eth_hdr(skb);
16423         const u8 *addr = ehdr->h_source;
16424         u16 proto = be16_to_cpu(skb->protocol);
16425         struct sk_buff *msg;
16426         void *hdr;
16427         struct nlattr *frame;
16428
16429         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16430
16431         if (!nlportid)
16432                 return -ENOENT;
16433
16434         msg = nlmsg_new(100 + skb->len, gfp);
16435         if (!msg)
16436                 return -ENOMEM;
16437
16438         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16439         if (!hdr) {
16440                 nlmsg_free(msg);
16441                 return -ENOBUFS;
16442         }
16443
16444         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16445             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16446             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16447                               NL80211_ATTR_PAD) ||
16448             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16449             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16450             (unencrypted && nla_put_flag(msg,
16451                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16452                 goto nla_put_failure;
16453
16454         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16455         if (!frame)
16456                 goto nla_put_failure;
16457
16458         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16459         genlmsg_end(msg, hdr);
16460
16461         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16462
16463  nla_put_failure:
16464         nlmsg_free(msg);
16465         return -ENOBUFS;
16466 }
16467
16468 bool cfg80211_rx_control_port(struct net_device *dev,
16469                               struct sk_buff *skb, bool unencrypted)
16470 {
16471         int ret;
16472
16473         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16474         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16475         trace_cfg80211_return_bool(ret == 0);
16476         return ret == 0;
16477 }
16478 EXPORT_SYMBOL(cfg80211_rx_control_port);
16479
16480 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16481                                             const char *mac, gfp_t gfp)
16482 {
16483         struct wireless_dev *wdev = dev->ieee80211_ptr;
16484         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16485         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16486         void **cb;
16487
16488         if (!msg)
16489                 return NULL;
16490
16491         cb = (void **)msg->cb;
16492
16493         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16494         if (!cb[0]) {
16495                 nlmsg_free(msg);
16496                 return NULL;
16497         }
16498
16499         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16500             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16501                 goto nla_put_failure;
16502
16503         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16504                 goto nla_put_failure;
16505
16506         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16507         if (!cb[1])
16508                 goto nla_put_failure;
16509
16510         cb[2] = rdev;
16511
16512         return msg;
16513  nla_put_failure:
16514         nlmsg_free(msg);
16515         return NULL;
16516 }
16517
16518 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16519 {
16520         void **cb = (void **)msg->cb;
16521         struct cfg80211_registered_device *rdev = cb[2];
16522
16523         nla_nest_end(msg, cb[1]);
16524         genlmsg_end(msg, cb[0]);
16525
16526         memset(msg->cb, 0, sizeof(msg->cb));
16527
16528         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16529                                 NL80211_MCGRP_MLME, gfp);
16530 }
16531
16532 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16533                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16534                               s32 rssi_level, gfp_t gfp)
16535 {
16536         struct sk_buff *msg;
16537         struct wireless_dev *wdev = dev->ieee80211_ptr;
16538         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16539
16540         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16541
16542         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16543                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16544                 return;
16545
16546         if (wdev->cqm_config) {
16547                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16548
16549                 cfg80211_cqm_rssi_update(rdev, dev);
16550
16551                 if (rssi_level == 0)
16552                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16553         }
16554
16555         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16556         if (!msg)
16557                 return;
16558
16559         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16560                         rssi_event))
16561                 goto nla_put_failure;
16562
16563         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16564                                       rssi_level))
16565                 goto nla_put_failure;
16566
16567         cfg80211_send_cqm(msg, gfp);
16568
16569         return;
16570
16571  nla_put_failure:
16572         nlmsg_free(msg);
16573 }
16574 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16575
16576 void cfg80211_cqm_txe_notify(struct net_device *dev,
16577                              const u8 *peer, u32 num_packets,
16578                              u32 rate, u32 intvl, gfp_t gfp)
16579 {
16580         struct sk_buff *msg;
16581
16582         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16583         if (!msg)
16584                 return;
16585
16586         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16587                 goto nla_put_failure;
16588
16589         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16590                 goto nla_put_failure;
16591
16592         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16593                 goto nla_put_failure;
16594
16595         cfg80211_send_cqm(msg, gfp);
16596         return;
16597
16598  nla_put_failure:
16599         nlmsg_free(msg);
16600 }
16601 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16602
16603 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16604                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16605 {
16606         struct sk_buff *msg;
16607
16608         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16609
16610         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16611         if (!msg)
16612                 return;
16613
16614         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16615                 goto nla_put_failure;
16616
16617         cfg80211_send_cqm(msg, gfp);
16618         return;
16619
16620  nla_put_failure:
16621         nlmsg_free(msg);
16622 }
16623 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16624
16625 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16626 {
16627         struct sk_buff *msg;
16628
16629         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16630         if (!msg)
16631                 return;
16632
16633         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16634                 goto nla_put_failure;
16635
16636         cfg80211_send_cqm(msg, gfp);
16637         return;
16638
16639  nla_put_failure:
16640         nlmsg_free(msg);
16641 }
16642 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16643
16644 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16645                                      struct net_device *netdev, const u8 *bssid,
16646                                      const u8 *replay_ctr, gfp_t gfp)
16647 {
16648         struct sk_buff *msg;
16649         struct nlattr *rekey_attr;
16650         void *hdr;
16651
16652         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16653         if (!msg)
16654                 return;
16655
16656         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16657         if (!hdr) {
16658                 nlmsg_free(msg);
16659                 return;
16660         }
16661
16662         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16663             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16664             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16665                 goto nla_put_failure;
16666
16667         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16668         if (!rekey_attr)
16669                 goto nla_put_failure;
16670
16671         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16672                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16673                 goto nla_put_failure;
16674
16675         nla_nest_end(msg, rekey_attr);
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_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16688                                const u8 *replay_ctr, gfp_t gfp)
16689 {
16690         struct wireless_dev *wdev = dev->ieee80211_ptr;
16691         struct wiphy *wiphy = wdev->wiphy;
16692         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16693
16694         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16695         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16696 }
16697 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16698
16699 static void
16700 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16701                                struct net_device *netdev, int index,
16702                                const u8 *bssid, bool preauth, gfp_t gfp)
16703 {
16704         struct sk_buff *msg;
16705         struct nlattr *attr;
16706         void *hdr;
16707
16708         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16709         if (!msg)
16710                 return;
16711
16712         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16713         if (!hdr) {
16714                 nlmsg_free(msg);
16715                 return;
16716         }
16717
16718         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16719             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16720                 goto nla_put_failure;
16721
16722         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16723         if (!attr)
16724                 goto nla_put_failure;
16725
16726         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16727             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16728             (preauth &&
16729              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16730                 goto nla_put_failure;
16731
16732         nla_nest_end(msg, attr);
16733
16734         genlmsg_end(msg, hdr);
16735
16736         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16737                                 NL80211_MCGRP_MLME, gfp);
16738         return;
16739
16740  nla_put_failure:
16741         nlmsg_free(msg);
16742 }
16743
16744 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16745                                      const u8 *bssid, bool preauth, gfp_t gfp)
16746 {
16747         struct wireless_dev *wdev = dev->ieee80211_ptr;
16748         struct wiphy *wiphy = wdev->wiphy;
16749         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16750
16751         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16752         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16753 }
16754 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16755
16756 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16757                                      struct net_device *netdev,
16758                                      struct cfg80211_chan_def *chandef,
16759                                      gfp_t gfp,
16760                                      enum nl80211_commands notif,
16761                                      u8 count)
16762 {
16763         struct sk_buff *msg;
16764         void *hdr;
16765
16766         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16767         if (!msg)
16768                 return;
16769
16770         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16771         if (!hdr) {
16772                 nlmsg_free(msg);
16773                 return;
16774         }
16775
16776         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16777                 goto nla_put_failure;
16778
16779         if (nl80211_send_chandef(msg, chandef))
16780                 goto nla_put_failure;
16781
16782         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16783             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16784                         goto nla_put_failure;
16785
16786         genlmsg_end(msg, hdr);
16787
16788         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16789                                 NL80211_MCGRP_MLME, gfp);
16790         return;
16791
16792  nla_put_failure:
16793         nlmsg_free(msg);
16794 }
16795
16796 void cfg80211_ch_switch_notify(struct net_device *dev,
16797                                struct cfg80211_chan_def *chandef)
16798 {
16799         struct wireless_dev *wdev = dev->ieee80211_ptr;
16800         struct wiphy *wiphy = wdev->wiphy;
16801         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16802
16803         ASSERT_WDEV_LOCK(wdev);
16804
16805         trace_cfg80211_ch_switch_notify(dev, chandef);
16806
16807         wdev->chandef = *chandef;
16808         wdev->preset_chandef = *chandef;
16809
16810         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16811             !WARN_ON(!wdev->current_bss))
16812                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16813
16814         cfg80211_sched_dfs_chan_update(rdev);
16815
16816         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16817                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16818 }
16819 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16820
16821 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16822                                        struct cfg80211_chan_def *chandef,
16823                                        u8 count)
16824 {
16825         struct wireless_dev *wdev = dev->ieee80211_ptr;
16826         struct wiphy *wiphy = wdev->wiphy;
16827         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16828
16829         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16830
16831         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16832                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16833 }
16834 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16835
16836 void
16837 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16838                      const struct cfg80211_chan_def *chandef,
16839                      enum nl80211_radar_event event,
16840                      struct net_device *netdev, gfp_t gfp)
16841 {
16842         struct sk_buff *msg;
16843         void *hdr;
16844
16845         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16846         if (!msg)
16847                 return;
16848
16849         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16850         if (!hdr) {
16851                 nlmsg_free(msg);
16852                 return;
16853         }
16854
16855         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16856                 goto nla_put_failure;
16857
16858         /* NOP and radar events don't need a netdev parameter */
16859         if (netdev) {
16860                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16861
16862                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16863                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16864                                       NL80211_ATTR_PAD))
16865                         goto nla_put_failure;
16866         }
16867
16868         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16869                 goto nla_put_failure;
16870
16871         if (nl80211_send_chandef(msg, chandef))
16872                 goto nla_put_failure;
16873
16874         genlmsg_end(msg, hdr);
16875
16876         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16877                                 NL80211_MCGRP_MLME, gfp);
16878         return;
16879
16880  nla_put_failure:
16881         nlmsg_free(msg);
16882 }
16883
16884 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16885                                        struct sta_opmode_info *sta_opmode,
16886                                        gfp_t gfp)
16887 {
16888         struct sk_buff *msg;
16889         struct wireless_dev *wdev = dev->ieee80211_ptr;
16890         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16891         void *hdr;
16892
16893         if (WARN_ON(!mac))
16894                 return;
16895
16896         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16897         if (!msg)
16898                 return;
16899
16900         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16901         if (!hdr) {
16902                 nlmsg_free(msg);
16903                 return;
16904         }
16905
16906         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16907                 goto nla_put_failure;
16908
16909         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16910                 goto nla_put_failure;
16911
16912         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16913                 goto nla_put_failure;
16914
16915         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16916             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16917                 goto nla_put_failure;
16918
16919         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16920             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16921                 goto nla_put_failure;
16922
16923         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16924             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16925                 goto nla_put_failure;
16926
16927         genlmsg_end(msg, hdr);
16928
16929         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16930                                 NL80211_MCGRP_MLME, gfp);
16931
16932         return;
16933
16934 nla_put_failure:
16935         nlmsg_free(msg);
16936 }
16937 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16938
16939 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16940                            u64 cookie, bool acked, s32 ack_signal,
16941                            bool is_valid_ack_signal, gfp_t gfp)
16942 {
16943         struct wireless_dev *wdev = dev->ieee80211_ptr;
16944         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16945         struct sk_buff *msg;
16946         void *hdr;
16947
16948         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16949
16950         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16951
16952         if (!msg)
16953                 return;
16954
16955         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16956         if (!hdr) {
16957                 nlmsg_free(msg);
16958                 return;
16959         }
16960
16961         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16962             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16963             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16964             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16965                               NL80211_ATTR_PAD) ||
16966             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16967             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16968                                                 ack_signal)))
16969                 goto nla_put_failure;
16970
16971         genlmsg_end(msg, hdr);
16972
16973         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16974                                 NL80211_MCGRP_MLME, gfp);
16975         return;
16976
16977  nla_put_failure:
16978         nlmsg_free(msg);
16979 }
16980 EXPORT_SYMBOL(cfg80211_probe_status);
16981
16982 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
16983                                      size_t len, int freq, int sig_dbm)
16984 {
16985         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16986         struct sk_buff *msg;
16987         void *hdr;
16988         struct cfg80211_beacon_registration *reg;
16989
16990         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16991
16992         spin_lock_bh(&rdev->beacon_registrations_lock);
16993         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16994                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16995                 if (!msg) {
16996                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16997                         return;
16998                 }
16999
17000                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17001                 if (!hdr)
17002                         goto nla_put_failure;
17003
17004                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17005                     (freq &&
17006                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17007                                   KHZ_TO_MHZ(freq)) ||
17008                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17009                                   freq % 1000))) ||
17010                     (sig_dbm &&
17011                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17012                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17013                         goto nla_put_failure;
17014
17015                 genlmsg_end(msg, hdr);
17016
17017                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17018         }
17019         spin_unlock_bh(&rdev->beacon_registrations_lock);
17020         return;
17021
17022  nla_put_failure:
17023         spin_unlock_bh(&rdev->beacon_registrations_lock);
17024         nlmsg_free(msg);
17025 }
17026 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17027
17028 #ifdef CONFIG_PM
17029 static int cfg80211_net_detect_results(struct sk_buff *msg,
17030                                        struct cfg80211_wowlan_wakeup *wakeup)
17031 {
17032         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17033         struct nlattr *nl_results, *nl_match, *nl_freqs;
17034         int i, j;
17035
17036         nl_results = nla_nest_start_noflag(msg,
17037                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17038         if (!nl_results)
17039                 return -EMSGSIZE;
17040
17041         for (i = 0; i < nd->n_matches; i++) {
17042                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17043
17044                 nl_match = nla_nest_start_noflag(msg, i);
17045                 if (!nl_match)
17046                         break;
17047
17048                 /* The SSID attribute is optional in nl80211, but for
17049                  * simplicity reasons it's always present in the
17050                  * cfg80211 structure.  If a driver can't pass the
17051                  * SSID, that needs to be changed.  A zero length SSID
17052                  * is still a valid SSID (wildcard), so it cannot be
17053                  * used for this purpose.
17054                  */
17055                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17056                             match->ssid.ssid)) {
17057                         nla_nest_cancel(msg, nl_match);
17058                         goto out;
17059                 }
17060
17061                 if (match->n_channels) {
17062                         nl_freqs = nla_nest_start_noflag(msg,
17063                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17064                         if (!nl_freqs) {
17065                                 nla_nest_cancel(msg, nl_match);
17066                                 goto out;
17067                         }
17068
17069                         for (j = 0; j < match->n_channels; j++) {
17070                                 if (nla_put_u32(msg, j, match->channels[j])) {
17071                                         nla_nest_cancel(msg, nl_freqs);
17072                                         nla_nest_cancel(msg, nl_match);
17073                                         goto out;
17074                                 }
17075                         }
17076
17077                         nla_nest_end(msg, nl_freqs);
17078                 }
17079
17080                 nla_nest_end(msg, nl_match);
17081         }
17082
17083 out:
17084         nla_nest_end(msg, nl_results);
17085         return 0;
17086 }
17087
17088 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17089                                    struct cfg80211_wowlan_wakeup *wakeup,
17090                                    gfp_t gfp)
17091 {
17092         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17093         struct sk_buff *msg;
17094         void *hdr;
17095         int size = 200;
17096
17097         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17098
17099         if (wakeup)
17100                 size += wakeup->packet_present_len;
17101
17102         msg = nlmsg_new(size, gfp);
17103         if (!msg)
17104                 return;
17105
17106         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17107         if (!hdr)
17108                 goto free_msg;
17109
17110         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17111             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17112                               NL80211_ATTR_PAD))
17113                 goto free_msg;
17114
17115         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17116                                         wdev->netdev->ifindex))
17117                 goto free_msg;
17118
17119         if (wakeup) {
17120                 struct nlattr *reasons;
17121
17122                 reasons = nla_nest_start_noflag(msg,
17123                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17124                 if (!reasons)
17125                         goto free_msg;
17126
17127                 if (wakeup->disconnect &&
17128                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17129                         goto free_msg;
17130                 if (wakeup->magic_pkt &&
17131                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17132                         goto free_msg;
17133                 if (wakeup->gtk_rekey_failure &&
17134                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17135                         goto free_msg;
17136                 if (wakeup->eap_identity_req &&
17137                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17138                         goto free_msg;
17139                 if (wakeup->four_way_handshake &&
17140                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17141                         goto free_msg;
17142                 if (wakeup->rfkill_release &&
17143                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17144                         goto free_msg;
17145
17146                 if (wakeup->pattern_idx >= 0 &&
17147                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17148                                 wakeup->pattern_idx))
17149                         goto free_msg;
17150
17151                 if (wakeup->tcp_match &&
17152                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17153                         goto free_msg;
17154
17155                 if (wakeup->tcp_connlost &&
17156                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17157                         goto free_msg;
17158
17159                 if (wakeup->tcp_nomoretokens &&
17160                     nla_put_flag(msg,
17161                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17162                         goto free_msg;
17163
17164                 if (wakeup->packet) {
17165                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17166                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17167
17168                         if (!wakeup->packet_80211) {
17169                                 pkt_attr =
17170                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17171                                 len_attr =
17172                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17173                         }
17174
17175                         if (wakeup->packet_len &&
17176                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17177                                 goto free_msg;
17178
17179                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17180                                     wakeup->packet))
17181                                 goto free_msg;
17182                 }
17183
17184                 if (wakeup->net_detect &&
17185                     cfg80211_net_detect_results(msg, wakeup))
17186                                 goto free_msg;
17187
17188                 nla_nest_end(msg, reasons);
17189         }
17190
17191         genlmsg_end(msg, hdr);
17192
17193         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17194                                 NL80211_MCGRP_MLME, gfp);
17195         return;
17196
17197  free_msg:
17198         nlmsg_free(msg);
17199 }
17200 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17201 #endif
17202
17203 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17204                                 enum nl80211_tdls_operation oper,
17205                                 u16 reason_code, gfp_t gfp)
17206 {
17207         struct wireless_dev *wdev = dev->ieee80211_ptr;
17208         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17209         struct sk_buff *msg;
17210         void *hdr;
17211
17212         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17213                                          reason_code);
17214
17215         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17216         if (!msg)
17217                 return;
17218
17219         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17220         if (!hdr) {
17221                 nlmsg_free(msg);
17222                 return;
17223         }
17224
17225         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17226             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17227             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17228             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17229             (reason_code > 0 &&
17230              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17231                 goto nla_put_failure;
17232
17233         genlmsg_end(msg, hdr);
17234
17235         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17236                                 NL80211_MCGRP_MLME, gfp);
17237         return;
17238
17239  nla_put_failure:
17240         nlmsg_free(msg);
17241 }
17242 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17243
17244 static int nl80211_netlink_notify(struct notifier_block * nb,
17245                                   unsigned long state,
17246                                   void *_notify)
17247 {
17248         struct netlink_notify *notify = _notify;
17249         struct cfg80211_registered_device *rdev;
17250         struct wireless_dev *wdev;
17251         struct cfg80211_beacon_registration *reg, *tmp;
17252
17253         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17254                 return NOTIFY_DONE;
17255
17256         rcu_read_lock();
17257
17258         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17259                 struct cfg80211_sched_scan_request *sched_scan_req;
17260
17261                 list_for_each_entry_rcu(sched_scan_req,
17262                                         &rdev->sched_scan_req_list,
17263                                         list) {
17264                         if (sched_scan_req->owner_nlportid == notify->portid) {
17265                                 sched_scan_req->nl_owner_dead = true;
17266                                 schedule_work(&rdev->sched_scan_stop_wk);
17267                         }
17268                 }
17269
17270                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17271                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17272
17273                         if (wdev->owner_nlportid == notify->portid) {
17274                                 wdev->nl_owner_dead = true;
17275                                 schedule_work(&rdev->destroy_work);
17276                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17277                                 schedule_work(&wdev->disconnect_wk);
17278                         }
17279
17280                         cfg80211_release_pmsr(wdev, notify->portid);
17281                 }
17282
17283                 spin_lock_bh(&rdev->beacon_registrations_lock);
17284                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17285                                          list) {
17286                         if (reg->nlportid == notify->portid) {
17287                                 list_del(&reg->list);
17288                                 kfree(reg);
17289                                 break;
17290                         }
17291                 }
17292                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17293         }
17294
17295         rcu_read_unlock();
17296
17297         /*
17298          * It is possible that the user space process that is controlling the
17299          * indoor setting disappeared, so notify the regulatory core.
17300          */
17301         regulatory_netlink_notify(notify->portid);
17302         return NOTIFY_OK;
17303 }
17304
17305 static struct notifier_block nl80211_netlink_notifier = {
17306         .notifier_call = nl80211_netlink_notify,
17307 };
17308
17309 void cfg80211_ft_event(struct net_device *netdev,
17310                        struct cfg80211_ft_event_params *ft_event)
17311 {
17312         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17313         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17314         struct sk_buff *msg;
17315         void *hdr;
17316
17317         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17318
17319         if (!ft_event->target_ap)
17320                 return;
17321
17322         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17323                         GFP_KERNEL);
17324         if (!msg)
17325                 return;
17326
17327         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17328         if (!hdr)
17329                 goto out;
17330
17331         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17332             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17333             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17334                 goto out;
17335
17336         if (ft_event->ies &&
17337             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17338                 goto out;
17339         if (ft_event->ric_ies &&
17340             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17341                     ft_event->ric_ies))
17342                 goto out;
17343
17344         genlmsg_end(msg, hdr);
17345
17346         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17347                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17348         return;
17349  out:
17350         nlmsg_free(msg);
17351 }
17352 EXPORT_SYMBOL(cfg80211_ft_event);
17353
17354 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17355 {
17356         struct cfg80211_registered_device *rdev;
17357         struct sk_buff *msg;
17358         void *hdr;
17359         u32 nlportid;
17360
17361         rdev = wiphy_to_rdev(wdev->wiphy);
17362         if (!rdev->crit_proto_nlportid)
17363                 return;
17364
17365         nlportid = rdev->crit_proto_nlportid;
17366         rdev->crit_proto_nlportid = 0;
17367
17368         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17369         if (!msg)
17370                 return;
17371
17372         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17373         if (!hdr)
17374                 goto nla_put_failure;
17375
17376         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17377             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17378                               NL80211_ATTR_PAD))
17379                 goto nla_put_failure;
17380
17381         genlmsg_end(msg, hdr);
17382
17383         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17384         return;
17385
17386  nla_put_failure:
17387         nlmsg_free(msg);
17388 }
17389 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17390
17391 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17392 {
17393         struct wiphy *wiphy = wdev->wiphy;
17394         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17395         struct sk_buff *msg;
17396         void *hdr;
17397
17398         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17399         if (!msg)
17400                 return;
17401
17402         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17403         if (!hdr)
17404                 goto out;
17405
17406         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17407             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17408             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17409                               NL80211_ATTR_PAD))
17410                 goto out;
17411
17412         genlmsg_end(msg, hdr);
17413
17414         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17415                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17416         return;
17417  out:
17418         nlmsg_free(msg);
17419 }
17420
17421 int cfg80211_external_auth_request(struct net_device *dev,
17422                                    struct cfg80211_external_auth_params *params,
17423                                    gfp_t gfp)
17424 {
17425         struct wireless_dev *wdev = dev->ieee80211_ptr;
17426         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17427         struct sk_buff *msg;
17428         void *hdr;
17429
17430         if (!wdev->conn_owner_nlportid)
17431                 return -EINVAL;
17432
17433         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17434         if (!msg)
17435                 return -ENOMEM;
17436
17437         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17438         if (!hdr)
17439                 goto nla_put_failure;
17440
17441         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17442             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17443             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17444             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17445                         params->action) ||
17446             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17447             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17448                     params->ssid.ssid))
17449                 goto nla_put_failure;
17450
17451         genlmsg_end(msg, hdr);
17452         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17453                         wdev->conn_owner_nlportid);
17454         return 0;
17455
17456  nla_put_failure:
17457         nlmsg_free(msg);
17458         return -ENOBUFS;
17459 }
17460 EXPORT_SYMBOL(cfg80211_external_auth_request);
17461
17462 void cfg80211_update_owe_info_event(struct net_device *netdev,
17463                                     struct cfg80211_update_owe_info *owe_info,
17464                                     gfp_t gfp)
17465 {
17466         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17467         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17468         struct sk_buff *msg;
17469         void *hdr;
17470
17471         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17472
17473         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17474         if (!msg)
17475                 return;
17476
17477         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17478         if (!hdr)
17479                 goto nla_put_failure;
17480
17481         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17482             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17483             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17484                 goto nla_put_failure;
17485
17486         if (!owe_info->ie_len ||
17487             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17488                 goto nla_put_failure;
17489
17490         genlmsg_end(msg, hdr);
17491
17492         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17493                                 NL80211_MCGRP_MLME, gfp);
17494         return;
17495
17496 nla_put_failure:
17497         genlmsg_cancel(msg, hdr);
17498         nlmsg_free(msg);
17499 }
17500 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17501
17502 /* initialisation/exit functions */
17503
17504 int __init nl80211_init(void)
17505 {
17506         int err;
17507
17508         err = genl_register_family(&nl80211_fam);
17509         if (err)
17510                 return err;
17511
17512         err = netlink_register_notifier(&nl80211_netlink_notifier);
17513         if (err)
17514                 goto err_out;
17515
17516         return 0;
17517  err_out:
17518         genl_unregister_family(&nl80211_fam);
17519         return err;
17520 }
17521
17522 void nl80211_exit(void)
17523 {
17524         netlink_unregister_notifier(&nl80211_netlink_notifier);
17525         genl_unregister_family(&nl80211_fam);
17526 }