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] = {
 734                 .type = NLA_BINARY,
 735                 .len = NL80211_KEK_EXT_LEN
 736         },
 737         [NL80211_REKEY_DATA_KCK] = {
 738                 .type = NLA_BINARY,
 739                 .len = NL80211_KCK_EXT_LEN
 740         },
 741         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN_WARN(NL80211_REPLAY_CTR_LEN),
 742         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 743 };
 744
 745 static const struct nla_policy
 746 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 747         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 748         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 749         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 750         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 751 };
 752
 753 static const struct nla_policy
 754 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 755         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 756                                                  .len = IEEE80211_MAX_SSID_LEN },
 757         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 758         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 759         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 760                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 761 };
 762
 763 static const struct nla_policy
 764 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 765         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 766         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 767 };
 768
 769 static const struct nla_policy
 770 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 771         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 772         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 773         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 774                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 775         },
 776 };
 777
 778 /* policy for NAN function attributes */
 779 static const struct nla_policy
 780 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 781         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 782         [NL80211_NAN_FUNC_SERVICE_ID] = {
 783                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 784         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 785         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 786         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 787         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 788         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 789         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 790         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 791         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 792         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 793                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 794         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 795         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 796         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 797         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 798         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 799 };
 800
 801 /* policy for Service Response Filter attributes */
 802 static const struct nla_policy
 803 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 804         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 805         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 806                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 807         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 808         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 809 };
 810
 811 /* policy for packet pattern attributes */
 812 static const struct nla_policy
 813 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 814         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 815         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 816         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 817 };
 818
 819 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 820                               struct cfg80211_registered_device **rdev,
 821                               struct wireless_dev **wdev)
 822 {
 823         int err;
 824
 825         if (!cb->args[0]) {
 826                 struct nlattr **attrbuf;
 827
 828                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 829                                   GFP_KERNEL);
 830                 if (!attrbuf)
 831                         return -ENOMEM;
 832
 833                 err = nlmsg_parse_deprecated(cb->nlh,
 834                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 835                                              attrbuf, nl80211_fam.maxattr,
 836                                              nl80211_policy, NULL);
 837                 if (err) {
 838                         kfree(attrbuf);
 839                         return err;
 840                 }
 841
 842                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 843                                                    attrbuf);
 844                 kfree(attrbuf);
 845                 if (IS_ERR(*wdev))
 846                         return PTR_ERR(*wdev);
 847                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 848                 /* 0 is the first index - add 1 to parse only once */
 849                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 850                 cb->args[1] = (*wdev)->identifier;
 851         } else {
 852                 /* subtract the 1 again here */
 853                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 854                 struct wireless_dev *tmp;
 855
 856                 if (!wiphy)
 857                         return -ENODEV;
 858                 *rdev = wiphy_to_rdev(wiphy);
 859                 *wdev = NULL;
 860
 861                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 862                         if (tmp->identifier == cb->args[1]) {
 863                                 *wdev = tmp;
 864                                 break;
 865                         }
 866                 }
 867
 868                 if (!*wdev)
 869                         return -ENODEV;
 870         }
 871
 872         return 0;
 873 }
 874
 875 /* message building helper */
 876 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 877                      int flags, u8 cmd)
 878 {
 879         /* since there is no private header just add the generic one */
 880         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 881 }
 882
 883 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 884                                      const struct ieee80211_reg_rule *rule)
 885 {
 886         int j;
 887         struct nlattr *nl_wmm_rules =
 888                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 889
 890         if (!nl_wmm_rules)
 891                 goto nla_put_failure;
 892
 893         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 894                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 895
 896                 if (!nl_wmm_rule)
 897                         goto nla_put_failure;
 898
 899                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 900                                 rule->wmm_rule.client[j].cw_min) ||
 901                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 902                                 rule->wmm_rule.client[j].cw_max) ||
 903                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 904                                rule->wmm_rule.client[j].aifsn) ||
 905                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 906                                 rule->wmm_rule.client[j].cot))
 907                         goto nla_put_failure;
 908
 909                 nla_nest_end(msg, nl_wmm_rule);
 910         }
 911         nla_nest_end(msg, nl_wmm_rules);
 912
 913         return 0;
 914
 915 nla_put_failure:
 916         return -ENOBUFS;
 917 }
 918
 919 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 920                                    struct ieee80211_channel *chan,
 921                                    bool large)
 922 {
 923         /* Some channels must be completely excluded from the
 924          * list to protect old user-space tools from breaking
 925          */
 926         if (!large && chan->flags &
 927             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 928                 return 0;
 929
 930         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 931                         chan->center_freq))
 932                 goto nla_put_failure;
 933
 934         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
 935                 goto nla_put_failure;
 936
 937         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 938             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 939                 goto nla_put_failure;
 940         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 941                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 942                         goto nla_put_failure;
 943                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 944                         goto nla_put_failure;
 945         }
 946         if (chan->flags & IEEE80211_CHAN_RADAR) {
 947                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 948                         goto nla_put_failure;
 949                 if (large) {
 950                         u32 time;
 951
 952                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 953
 954                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 955                                         chan->dfs_state))
 956                                 goto nla_put_failure;
 957                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 958                                         time))
 959                                 goto nla_put_failure;
 960                         if (nla_put_u32(msg,
 961                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 962                                         chan->dfs_cac_ms))
 963                                 goto nla_put_failure;
 964                 }
 965         }
 966
 967         if (large) {
 968                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 969                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 970                         goto nla_put_failure;
 971                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 972                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 973                         goto nla_put_failure;
 974                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 975                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 976                         goto nla_put_failure;
 977                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 978                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 979                         goto nla_put_failure;
 980                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 981                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 982                         goto nla_put_failure;
 983                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 984                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 985                         goto nla_put_failure;
 986                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 987                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 988                         goto nla_put_failure;
 989                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 990                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 991                         goto nla_put_failure;
 992                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
 993                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
 994                         goto nla_put_failure;
 995         }
 996
 997         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 998                         DBM_TO_MBM(chan->max_power)))
 999                 goto nla_put_failure;
1000
1001         if (large) {
1002                 const struct ieee80211_reg_rule *rule =
1003                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1004
1005                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1006                         if (nl80211_msg_put_wmm_rules(msg, rule))
1007                                 goto nla_put_failure;
1008                 }
1009         }
1010
1011         return 0;
1012
1013  nla_put_failure:
1014         return -ENOBUFS;
1015 }
1016
1017 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1018                                   struct cfg80211_txq_stats *txqstats,
1019                                   int attrtype)
1020 {
1021         struct nlattr *txqattr;
1022
1023 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1024         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1025             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1026                 return false;                                             \
1027         } while (0)
1028
1029         txqattr = nla_nest_start_noflag(msg, attrtype);
1030         if (!txqattr)
1031                 return false;
1032
1033         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1034         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1035         PUT_TXQVAL_U32(FLOWS, flows);
1036         PUT_TXQVAL_U32(DROPS, drops);
1037         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1038         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1039         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1040         PUT_TXQVAL_U32(COLLISIONS, collisions);
1041         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1042         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1043         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1044         nla_nest_end(msg, txqattr);
1045
1046 #undef PUT_TXQVAL_U32
1047         return true;
1048 }
1049
1050 /* netlink command implementations */
1051
1052 struct key_parse {
1053         struct key_params p;
1054         int idx;
1055         int type;
1056         bool def, defmgmt, defbeacon;
1057         bool def_uni, def_multi;
1058 };
1059
1060 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1061                                  struct key_parse *k)
1062 {
1063         struct nlattr *tb[NL80211_KEY_MAX + 1];
1064         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1065                                               nl80211_key_policy,
1066                                               info->extack);
1067         if (err)
1068                 return err;
1069
1070         k->def = !!tb[NL80211_KEY_DEFAULT];
1071         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1072         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1073
1074         if (k->def) {
1075                 k->def_uni = true;
1076                 k->def_multi = true;
1077         }
1078         if (k->defmgmt || k->defbeacon)
1079                 k->def_multi = true;
1080
1081         if (tb[NL80211_KEY_IDX])
1082                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1083
1084         if (tb[NL80211_KEY_DATA]) {
1085                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1086                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1087         }
1088
1089         if (tb[NL80211_KEY_SEQ]) {
1090                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1091                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1092         }
1093
1094         if (tb[NL80211_KEY_CIPHER])
1095                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1096
1097         if (tb[NL80211_KEY_TYPE])
1098                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1099
1100         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1101                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1102
1103                 err = nla_parse_nested_deprecated(kdt,
1104                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1105                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1106                                                   nl80211_key_default_policy,
1107                                                   info->extack);
1108                 if (err)
1109                         return err;
1110
1111                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1112                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1113         }
1114
1115         if (tb[NL80211_KEY_MODE])
1116                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1117
1118         return 0;
1119 }
1120
1121 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1122 {
1123         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1124                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1125                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1126         }
1127
1128         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1129                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1130                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1131         }
1132
1133         if (info->attrs[NL80211_ATTR_KEY_IDX])
1134                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1135
1136         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1137                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1138
1139         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1140         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1141
1142         if (k->def) {
1143                 k->def_uni = true;
1144                 k->def_multi = true;
1145         }
1146         if (k->defmgmt)
1147                 k->def_multi = true;
1148
1149         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1150                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1151
1152         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1153                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1154                 int err = nla_parse_nested_deprecated(kdt,
1155                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1156                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1157                                                       nl80211_key_default_policy,
1158                                                       info->extack);
1159                 if (err)
1160                         return err;
1161
1162                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1163                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1164         }
1165
1166         return 0;
1167 }
1168
1169 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1170 {
1171         int err;
1172
1173         memset(k, 0, sizeof(*k));
1174         k->idx = -1;
1175         k->type = -1;
1176
1177         if (info->attrs[NL80211_ATTR_KEY])
1178                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1179         else
1180                 err = nl80211_parse_key_old(info, k);
1181
1182         if (err)
1183                 return err;
1184
1185         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1186             (k->defbeacon ? 1 : 0) > 1) {
1187                 GENL_SET_ERR_MSG(info,
1188                                  "key with multiple default flags is invalid");
1189                 return -EINVAL;
1190         }
1191
1192         if (k->defmgmt || k->defbeacon) {
1193                 if (k->def_uni || !k->def_multi) {
1194                         GENL_SET_ERR_MSG(info,
1195                                          "defmgmt/defbeacon key must be mcast");
1196                         return -EINVAL;
1197                 }
1198         }
1199
1200         if (k->idx != -1) {
1201                 if (k->defmgmt) {
1202                         if (k->idx < 4 || k->idx > 5) {
1203                                 GENL_SET_ERR_MSG(info,
1204                                                  "defmgmt key idx not 4 or 5");
1205                                 return -EINVAL;
1206                         }
1207                 } else if (k->defbeacon) {
1208                         if (k->idx < 6 || k->idx > 7) {
1209                                 GENL_SET_ERR_MSG(info,
1210                                                  "defbeacon key idx not 6 or 7");
1211                                 return -EINVAL;
1212                         }
1213                 } else if (k->def) {
1214                         if (k->idx < 0 || k->idx > 3) {
1215                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1216                                 return -EINVAL;
1217                         }
1218                 } else {
1219                         if (k->idx < 0 || k->idx > 7) {
1220                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1221                                 return -EINVAL;
1222                         }
1223                 }
1224         }
1225
1226         return 0;
1227 }
1228
1229 static struct cfg80211_cached_keys *
1230 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1231                        struct genl_info *info, bool *no_ht)
1232 {
1233         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1234         struct key_parse parse;
1235         struct nlattr *key;
1236         struct cfg80211_cached_keys *result;
1237         int rem, err, def = 0;
1238         bool have_key = false;
1239
1240         nla_for_each_nested(key, keys, rem) {
1241                 have_key = true;
1242                 break;
1243         }
1244
1245         if (!have_key)
1246                 return NULL;
1247
1248         result = kzalloc(sizeof(*result), GFP_KERNEL);
1249         if (!result)
1250                 return ERR_PTR(-ENOMEM);
1251
1252         result->def = -1;
1253
1254         nla_for_each_nested(key, keys, rem) {
1255                 memset(&parse, 0, sizeof(parse));
1256                 parse.idx = -1;
1257
1258                 err = nl80211_parse_key_new(info, key, &parse);
1259                 if (err)
1260                         goto error;
1261                 err = -EINVAL;
1262                 if (!parse.p.key)
1263                         goto error;
1264                 if (parse.idx < 0 || parse.idx > 3) {
1265                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1266                         goto error;
1267                 }
1268                 if (parse.def) {
1269                         if (def) {
1270                                 GENL_SET_ERR_MSG(info,
1271                                                  "only one key can be default");
1272                                 goto error;
1273                         }
1274                         def = 1;
1275                         result->def = parse.idx;
1276                         if (!parse.def_uni || !parse.def_multi)
1277                                 goto error;
1278                 } else if (parse.defmgmt)
1279                         goto error;
1280                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1281                                                      parse.idx, false, NULL);
1282                 if (err)
1283                         goto error;
1284                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1285                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1286                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1287                         err = -EINVAL;
1288                         goto error;
1289                 }
1290                 result->params[parse.idx].cipher = parse.p.cipher;
1291                 result->params[parse.idx].key_len = parse.p.key_len;
1292                 result->params[parse.idx].key = result->data[parse.idx];
1293                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1294
1295                 /* must be WEP key if we got here */
1296                 if (no_ht)
1297                         *no_ht = true;
1298         }
1299
1300         if (result->def < 0) {
1301                 err = -EINVAL;
1302                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1303                 goto error;
1304         }
1305
1306         return result;
1307  error:
1308         kfree(result);
1309         return ERR_PTR(err);
1310 }
1311
1312 static int nl80211_key_allowed(struct wireless_dev *wdev)
1313 {
1314         ASSERT_WDEV_LOCK(wdev);
1315
1316         switch (wdev->iftype) {
1317         case NL80211_IFTYPE_AP:
1318         case NL80211_IFTYPE_AP_VLAN:
1319         case NL80211_IFTYPE_P2P_GO:
1320         case NL80211_IFTYPE_MESH_POINT:
1321                 break;
1322         case NL80211_IFTYPE_ADHOC:
1323         case NL80211_IFTYPE_STATION:
1324         case NL80211_IFTYPE_P2P_CLIENT:
1325                 if (!wdev->current_bss)
1326                         return -ENOLINK;
1327                 break;
1328         case NL80211_IFTYPE_UNSPECIFIED:
1329         case NL80211_IFTYPE_OCB:
1330         case NL80211_IFTYPE_MONITOR:
1331         case NL80211_IFTYPE_NAN:
1332         case NL80211_IFTYPE_P2P_DEVICE:
1333         case NL80211_IFTYPE_WDS:
1334         case NUM_NL80211_IFTYPES:
1335                 return -EINVAL;
1336         }
1337
1338         return 0;
1339 }
1340
1341 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1342                                                         u32 freq)
1343 {
1344         struct ieee80211_channel *chan;
1345
1346         chan = ieee80211_get_channel_khz(wiphy, freq);
1347         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1348                 return NULL;
1349         return chan;
1350 }
1351
1352 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1353 {
1354         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1355         int i;
1356
1357         if (!nl_modes)
1358                 goto nla_put_failure;
1359
1360         i = 0;
1361         while (ifmodes) {
1362                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1363                         goto nla_put_failure;
1364                 ifmodes >>= 1;
1365                 i++;
1366         }
1367
1368         nla_nest_end(msg, nl_modes);
1369         return 0;
1370
1371 nla_put_failure:
1372         return -ENOBUFS;
1373 }
1374
1375 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1376                                           struct sk_buff *msg,
1377                                           bool large)
1378 {
1379         struct nlattr *nl_combis;
1380         int i, j;
1381
1382         nl_combis = nla_nest_start_noflag(msg,
1383                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1384         if (!nl_combis)
1385                 goto nla_put_failure;
1386
1387         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1388                 const struct ieee80211_iface_combination *c;
1389                 struct nlattr *nl_combi, *nl_limits;
1390
1391                 c = &wiphy->iface_combinations[i];
1392
1393                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1394                 if (!nl_combi)
1395                         goto nla_put_failure;
1396
1397                 nl_limits = nla_nest_start_noflag(msg,
1398                                                   NL80211_IFACE_COMB_LIMITS);
1399                 if (!nl_limits)
1400                         goto nla_put_failure;
1401
1402                 for (j = 0; j < c->n_limits; j++) {
1403                         struct nlattr *nl_limit;
1404
1405                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1406                         if (!nl_limit)
1407                                 goto nla_put_failure;
1408                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1409                                         c->limits[j].max))
1410                                 goto nla_put_failure;
1411                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1412                                                 c->limits[j].types))
1413                                 goto nla_put_failure;
1414                         nla_nest_end(msg, nl_limit);
1415                 }
1416
1417                 nla_nest_end(msg, nl_limits);
1418
1419                 if (c->beacon_int_infra_match &&
1420                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1421                         goto nla_put_failure;
1422                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1423                                 c->num_different_channels) ||
1424                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1425                                 c->max_interfaces))
1426                         goto nla_put_failure;
1427                 if (large &&
1428                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1429                                 c->radar_detect_widths) ||
1430                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1431                                 c->radar_detect_regions)))
1432                         goto nla_put_failure;
1433                 if (c->beacon_int_min_gcd &&
1434                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1435                                 c->beacon_int_min_gcd))
1436                         goto nla_put_failure;
1437
1438                 nla_nest_end(msg, nl_combi);
1439         }
1440
1441         nla_nest_end(msg, nl_combis);
1442
1443         return 0;
1444 nla_put_failure:
1445         return -ENOBUFS;
1446 }
1447
1448 #ifdef CONFIG_PM
1449 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1450                                         struct sk_buff *msg)
1451 {
1452         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1453         struct nlattr *nl_tcp;
1454
1455         if (!tcp)
1456                 return 0;
1457
1458         nl_tcp = nla_nest_start_noflag(msg,
1459                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1460         if (!nl_tcp)
1461                 return -ENOBUFS;
1462
1463         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1464                         tcp->data_payload_max))
1465                 return -ENOBUFS;
1466
1467         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1468                         tcp->data_payload_max))
1469                 return -ENOBUFS;
1470
1471         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1472                 return -ENOBUFS;
1473
1474         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1475                                 sizeof(*tcp->tok), tcp->tok))
1476                 return -ENOBUFS;
1477
1478         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1479                         tcp->data_interval_max))
1480                 return -ENOBUFS;
1481
1482         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1483                         tcp->wake_payload_max))
1484                 return -ENOBUFS;
1485
1486         nla_nest_end(msg, nl_tcp);
1487         return 0;
1488 }
1489
1490 static int nl80211_send_wowlan(struct sk_buff *msg,
1491                                struct cfg80211_registered_device *rdev,
1492                                bool large)
1493 {
1494         struct nlattr *nl_wowlan;
1495
1496         if (!rdev->wiphy.wowlan)
1497                 return 0;
1498
1499         nl_wowlan = nla_nest_start_noflag(msg,
1500                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1501         if (!nl_wowlan)
1502                 return -ENOBUFS;
1503
1504         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1505              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1506             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1507              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1508             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1509              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1510             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1511              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1512             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1513              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1514             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1515              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1516             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1517              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1518             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1519              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1520                 return -ENOBUFS;
1521
1522         if (rdev->wiphy.wowlan->n_patterns) {
1523                 struct nl80211_pattern_support pat = {
1524                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1525                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1526                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1527                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1528                 };
1529
1530                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1531                             sizeof(pat), &pat))
1532                         return -ENOBUFS;
1533         }
1534
1535         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1536             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1537                         rdev->wiphy.wowlan->max_nd_match_sets))
1538                 return -ENOBUFS;
1539
1540         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1541                 return -ENOBUFS;
1542
1543         nla_nest_end(msg, nl_wowlan);
1544
1545         return 0;
1546 }
1547 #endif
1548
1549 static int nl80211_send_coalesce(struct sk_buff *msg,
1550                                  struct cfg80211_registered_device *rdev)
1551 {
1552         struct nl80211_coalesce_rule_support rule;
1553
1554         if (!rdev->wiphy.coalesce)
1555                 return 0;
1556
1557         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1558         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1559         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1560         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1561         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1562         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1563
1564         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1565                 return -ENOBUFS;
1566
1567         return 0;
1568 }
1569
1570 static int
1571 nl80211_send_iftype_data(struct sk_buff *msg,
1572                          const struct ieee80211_supported_band *sband,
1573                          const struct ieee80211_sband_iftype_data *iftdata)
1574 {
1575         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1576
1577         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1578                                 iftdata->types_mask))
1579                 return -ENOBUFS;
1580
1581         if (he_cap->has_he) {
1582                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1583                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1584                             he_cap->he_cap_elem.mac_cap_info) ||
1585                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1586                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1587                             he_cap->he_cap_elem.phy_cap_info) ||
1588                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1589                             sizeof(he_cap->he_mcs_nss_supp),
1590                             &he_cap->he_mcs_nss_supp) ||
1591                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1592                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1593                         return -ENOBUFS;
1594         }
1595
1596         if (sband->band == NL80211_BAND_6GHZ &&
1597             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1598                     sizeof(iftdata->he_6ghz_capa),
1599                     &iftdata->he_6ghz_capa))
1600                 return -ENOBUFS;
1601
1602         return 0;
1603 }
1604
1605 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1606                                       struct ieee80211_supported_band *sband)
1607 {
1608         struct nlattr *nl_rates, *nl_rate;
1609         struct ieee80211_rate *rate;
1610         int i;
1611
1612         /* add HT info */
1613         if (sband->ht_cap.ht_supported &&
1614             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1615                      sizeof(sband->ht_cap.mcs),
1616                      &sband->ht_cap.mcs) ||
1617              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1618                          sband->ht_cap.cap) ||
1619              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1620                         sband->ht_cap.ampdu_factor) ||
1621              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1622                         sband->ht_cap.ampdu_density)))
1623                 return -ENOBUFS;
1624
1625         /* add VHT info */
1626         if (sband->vht_cap.vht_supported &&
1627             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1628                      sizeof(sband->vht_cap.vht_mcs),
1629                      &sband->vht_cap.vht_mcs) ||
1630              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1631                          sband->vht_cap.cap)))
1632                 return -ENOBUFS;
1633
1634         if (sband->n_iftype_data) {
1635                 struct nlattr *nl_iftype_data =
1636                         nla_nest_start_noflag(msg,
1637                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1638                 int err;
1639
1640                 if (!nl_iftype_data)
1641                         return -ENOBUFS;
1642
1643                 for (i = 0; i < sband->n_iftype_data; i++) {
1644                         struct nlattr *iftdata;
1645
1646                         iftdata = nla_nest_start_noflag(msg, i + 1);
1647                         if (!iftdata)
1648                                 return -ENOBUFS;
1649
1650                         err = nl80211_send_iftype_data(msg, sband,
1651                                                        &sband->iftype_data[i]);
1652                         if (err)
1653                                 return err;
1654
1655                         nla_nest_end(msg, iftdata);
1656                 }
1657
1658                 nla_nest_end(msg, nl_iftype_data);
1659         }
1660
1661         /* add EDMG info */
1662         if (sband->edmg_cap.channels &&
1663             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1664                        sband->edmg_cap.channels) ||
1665             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1666                        sband->edmg_cap.bw_config)))
1667
1668                 return -ENOBUFS;
1669
1670         /* add bitrates */
1671         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1672         if (!nl_rates)
1673                 return -ENOBUFS;
1674
1675         for (i = 0; i < sband->n_bitrates; i++) {
1676                 nl_rate = nla_nest_start_noflag(msg, i);
1677                 if (!nl_rate)
1678                         return -ENOBUFS;
1679
1680                 rate = &sband->bitrates[i];
1681                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1682                                 rate->bitrate))
1683                         return -ENOBUFS;
1684                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1685                     nla_put_flag(msg,
1686                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1687                         return -ENOBUFS;
1688
1689                 nla_nest_end(msg, nl_rate);
1690         }
1691
1692         nla_nest_end(msg, nl_rates);
1693
1694         return 0;
1695 }
1696
1697 static int
1698 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1699                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1700 {
1701         u16 stypes;
1702         struct nlattr *nl_ftypes, *nl_ifs;
1703         enum nl80211_iftype ift;
1704         int i;
1705
1706         if (!mgmt_stypes)
1707                 return 0;
1708
1709         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1710         if (!nl_ifs)
1711                 return -ENOBUFS;
1712
1713         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1714                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1715                 if (!nl_ftypes)
1716                         return -ENOBUFS;
1717                 i = 0;
1718                 stypes = mgmt_stypes[ift].tx;
1719                 while (stypes) {
1720                         if ((stypes & 1) &&
1721                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1722                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1723                                 return -ENOBUFS;
1724                         stypes >>= 1;
1725                         i++;
1726                 }
1727                 nla_nest_end(msg, nl_ftypes);
1728         }
1729
1730         nla_nest_end(msg, nl_ifs);
1731
1732         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1733         if (!nl_ifs)
1734                 return -ENOBUFS;
1735
1736         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1737                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1738                 if (!nl_ftypes)
1739                         return -ENOBUFS;
1740                 i = 0;
1741                 stypes = mgmt_stypes[ift].rx;
1742                 while (stypes) {
1743                         if ((stypes & 1) &&
1744                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1745                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1746                                 return -ENOBUFS;
1747                         stypes >>= 1;
1748                         i++;
1749                 }
1750                 nla_nest_end(msg, nl_ftypes);
1751         }
1752         nla_nest_end(msg, nl_ifs);
1753
1754         return 0;
1755 }
1756
1757 #define CMD(op, n)                                                      \
1758          do {                                                           \
1759                 if (rdev->ops->op) {                                    \
1760                         i++;                                            \
1761                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1762                                 goto nla_put_failure;                   \
1763                 }                                                       \
1764         } while (0)
1765
1766 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1767                                         struct sk_buff *msg)
1768 {
1769         int i = 0;
1770
1771         /*
1772          * do *NOT* add anything into this function, new things need to be
1773          * advertised only to new versions of userspace that can deal with
1774          * the split (and they can't possibly care about new features...
1775          */
1776         CMD(add_virtual_intf, NEW_INTERFACE);
1777         CMD(change_virtual_intf, SET_INTERFACE);
1778         CMD(add_key, NEW_KEY);
1779         CMD(start_ap, START_AP);
1780         CMD(add_station, NEW_STATION);
1781         CMD(add_mpath, NEW_MPATH);
1782         CMD(update_mesh_config, SET_MESH_CONFIG);
1783         CMD(change_bss, SET_BSS);
1784         CMD(auth, AUTHENTICATE);
1785         CMD(assoc, ASSOCIATE);
1786         CMD(deauth, DEAUTHENTICATE);
1787         CMD(disassoc, DISASSOCIATE);
1788         CMD(join_ibss, JOIN_IBSS);
1789         CMD(join_mesh, JOIN_MESH);
1790         CMD(set_pmksa, SET_PMKSA);
1791         CMD(del_pmksa, DEL_PMKSA);
1792         CMD(flush_pmksa, FLUSH_PMKSA);
1793         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1794                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1795         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1796         CMD(mgmt_tx, FRAME);
1797         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1798         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1799                 i++;
1800                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1801                         goto nla_put_failure;
1802         }
1803         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1804             rdev->ops->join_mesh) {
1805                 i++;
1806                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1807                         goto nla_put_failure;
1808         }
1809         CMD(set_wds_peer, SET_WDS_PEER);
1810         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1811                 CMD(tdls_mgmt, TDLS_MGMT);
1812                 CMD(tdls_oper, TDLS_OPER);
1813         }
1814         if (rdev->wiphy.max_sched_scan_reqs)
1815                 CMD(sched_scan_start, START_SCHED_SCAN);
1816         CMD(probe_client, PROBE_CLIENT);
1817         CMD(set_noack_map, SET_NOACK_MAP);
1818         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1819                 i++;
1820                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1821                         goto nla_put_failure;
1822         }
1823         CMD(start_p2p_device, START_P2P_DEVICE);
1824         CMD(set_mcast_rate, SET_MCAST_RATE);
1825 #ifdef CONFIG_NL80211_TESTMODE
1826         CMD(testmode_cmd, TESTMODE);
1827 #endif
1828
1829         if (rdev->ops->connect || rdev->ops->auth) {
1830                 i++;
1831                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1832                         goto nla_put_failure;
1833         }
1834
1835         if (rdev->ops->disconnect || rdev->ops->deauth) {
1836                 i++;
1837                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1838                         goto nla_put_failure;
1839         }
1840
1841         return i;
1842  nla_put_failure:
1843         return -ENOBUFS;
1844 }
1845
1846 static int
1847 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1848                            struct sk_buff *msg)
1849 {
1850         struct nlattr *ftm;
1851
1852         if (!cap->ftm.supported)
1853                 return 0;
1854
1855         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1856         if (!ftm)
1857                 return -ENOBUFS;
1858
1859         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1860                 return -ENOBUFS;
1861         if (cap->ftm.non_asap &&
1862             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1863                 return -ENOBUFS;
1864         if (cap->ftm.request_lci &&
1865             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1866                 return -ENOBUFS;
1867         if (cap->ftm.request_civicloc &&
1868             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1869                 return -ENOBUFS;
1870         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1871                         cap->ftm.preambles))
1872                 return -ENOBUFS;
1873         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1874                         cap->ftm.bandwidths))
1875                 return -ENOBUFS;
1876         if (cap->ftm.max_bursts_exponent >= 0 &&
1877             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1878                         cap->ftm.max_bursts_exponent))
1879                 return -ENOBUFS;
1880         if (cap->ftm.max_ftms_per_burst &&
1881             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1882                         cap->ftm.max_ftms_per_burst))
1883                 return -ENOBUFS;
1884         if (cap->ftm.trigger_based &&
1885             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1886                 return -ENOBUFS;
1887         if (cap->ftm.non_trigger_based &&
1888             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1889                 return -ENOBUFS;
1890
1891         nla_nest_end(msg, ftm);
1892         return 0;
1893 }
1894
1895 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1896                                   struct sk_buff *msg)
1897 {
1898         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1899         struct nlattr *pmsr, *caps;
1900
1901         if (!cap)
1902                 return 0;
1903
1904         /*
1905          * we don't need to clean up anything here since the caller
1906          * will genlmsg_cancel() if we fail
1907          */
1908
1909         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1910         if (!pmsr)
1911                 return -ENOBUFS;
1912
1913         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1914                 return -ENOBUFS;
1915
1916         if (cap->report_ap_tsf &&
1917             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1918                 return -ENOBUFS;
1919
1920         if (cap->randomize_mac_addr &&
1921             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1922                 return -ENOBUFS;
1923
1924         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1925         if (!caps)
1926                 return -ENOBUFS;
1927
1928         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1929                 return -ENOBUFS;
1930
1931         nla_nest_end(msg, caps);
1932         nla_nest_end(msg, pmsr);
1933
1934         return 0;
1935 }
1936
1937 static int
1938 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
1939                               struct sk_buff *msg)
1940 {
1941         int i;
1942         struct nlattr *nested, *nested_akms;
1943         const struct wiphy_iftype_akm_suites *iftype_akms;
1944
1945         if (!rdev->wiphy.num_iftype_akm_suites ||
1946             !rdev->wiphy.iftype_akm_suites)
1947                 return 0;
1948
1949         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
1950         if (!nested)
1951                 return -ENOBUFS;
1952
1953         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
1954                 nested_akms = nla_nest_start(msg, i + 1);
1955                 if (!nested_akms)
1956                         return -ENOBUFS;
1957
1958                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
1959
1960                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
1961                                         iftype_akms->iftypes_mask))
1962                         return -ENOBUFS;
1963
1964                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
1965                             sizeof(u32) * iftype_akms->n_akm_suites,
1966                             iftype_akms->akm_suites)) {
1967                         return -ENOBUFS;
1968                 }
1969                 nla_nest_end(msg, nested_akms);
1970         }
1971
1972         nla_nest_end(msg, nested);
1973
1974         return 0;
1975 }
1976
1977 static int
1978 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
1979                                struct sk_buff *msg)
1980 {
1981         struct nlattr *supp;
1982
1983         if (!rdev->wiphy.tid_config_support.vif &&
1984             !rdev->wiphy.tid_config_support.peer)
1985                 return 0;
1986
1987         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
1988         if (!supp)
1989                 return -ENOSPC;
1990
1991         if (rdev->wiphy.tid_config_support.vif &&
1992             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
1993                               rdev->wiphy.tid_config_support.vif,
1994                               NL80211_TID_CONFIG_ATTR_PAD))
1995                 goto fail;
1996
1997         if (rdev->wiphy.tid_config_support.peer &&
1998             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
1999                               rdev->wiphy.tid_config_support.peer,
2000                               NL80211_TID_CONFIG_ATTR_PAD))
2001                 goto fail;
2002
2003         /* for now we just use the same value ... makes more sense */
2004         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2005                        rdev->wiphy.tid_config_support.max_retry))
2006                 goto fail;
2007         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2008                        rdev->wiphy.tid_config_support.max_retry))
2009                 goto fail;
2010
2011         nla_nest_end(msg, supp);
2012
2013         return 0;
2014 fail:
2015         nla_nest_cancel(msg, supp);
2016         return -ENOBUFS;
2017 }
2018
2019 struct nl80211_dump_wiphy_state {
2020         s64 filter_wiphy;
2021         long start;
2022         long split_start, band_start, chan_start, capa_start;
2023         bool split;
2024 };
2025
2026 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2027                               enum nl80211_commands cmd,
2028                               struct sk_buff *msg, u32 portid, u32 seq,
2029                               int flags, struct nl80211_dump_wiphy_state *state)
2030 {
2031         void *hdr;
2032         struct nlattr *nl_bands, *nl_band;
2033         struct nlattr *nl_freqs, *nl_freq;
2034         struct nlattr *nl_cmds;
2035         enum nl80211_band band;
2036         struct ieee80211_channel *chan;
2037         int i;
2038         const struct ieee80211_txrx_stypes *mgmt_stypes =
2039                                 rdev->wiphy.mgmt_stypes;
2040         u32 features;
2041
2042         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2043         if (!hdr)
2044                 return -ENOBUFS;
2045
2046         if (WARN_ON(!state))
2047                 return -EINVAL;
2048
2049         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2050             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2051                            wiphy_name(&rdev->wiphy)) ||
2052             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2053                         cfg80211_rdev_list_generation))
2054                 goto nla_put_failure;
2055
2056         if (cmd != NL80211_CMD_NEW_WIPHY)
2057                 goto finish;
2058
2059         switch (state->split_start) {
2060         case 0:
2061                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2062                                rdev->wiphy.retry_short) ||
2063                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2064                                rdev->wiphy.retry_long) ||
2065                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2066                                 rdev->wiphy.frag_threshold) ||
2067                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2068                                 rdev->wiphy.rts_threshold) ||
2069                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2070                                rdev->wiphy.coverage_class) ||
2071                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2072                                rdev->wiphy.max_scan_ssids) ||
2073                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2074                                rdev->wiphy.max_sched_scan_ssids) ||
2075                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2076                                 rdev->wiphy.max_scan_ie_len) ||
2077                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2078                                 rdev->wiphy.max_sched_scan_ie_len) ||
2079                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2080                                rdev->wiphy.max_match_sets) ||
2081                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2082                                 rdev->wiphy.max_sched_scan_plans) ||
2083                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2084                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2085                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2086                                 rdev->wiphy.max_sched_scan_plan_iterations))
2087                         goto nla_put_failure;
2088
2089                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2090                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2091                         goto nla_put_failure;
2092                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2093                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2094                         goto nla_put_failure;
2095                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2096                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2097                         goto nla_put_failure;
2098                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2099                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2100                         goto nla_put_failure;
2101                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2102                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2103                         goto nla_put_failure;
2104                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2105                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2106                         goto nla_put_failure;
2107                 state->split_start++;
2108                 if (state->split)
2109                         break;
2110                 fallthrough;
2111         case 1:
2112                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2113                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2114                             rdev->wiphy.cipher_suites))
2115                         goto nla_put_failure;
2116
2117                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2118                                rdev->wiphy.max_num_pmkids))
2119                         goto nla_put_failure;
2120
2121                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2122                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2123                         goto nla_put_failure;
2124
2125                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2126                                 rdev->wiphy.available_antennas_tx) ||
2127                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2128                                 rdev->wiphy.available_antennas_rx))
2129                         goto nla_put_failure;
2130
2131                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2132                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2133                                 rdev->wiphy.probe_resp_offload))
2134                         goto nla_put_failure;
2135
2136                 if ((rdev->wiphy.available_antennas_tx ||
2137                      rdev->wiphy.available_antennas_rx) &&
2138                     rdev->ops->get_antenna) {
2139                         u32 tx_ant = 0, rx_ant = 0;
2140                         int res;
2141
2142                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2143                         if (!res) {
2144                                 if (nla_put_u32(msg,
2145                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2146                                                 tx_ant) ||
2147                                     nla_put_u32(msg,
2148                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2149                                                 rx_ant))
2150                                         goto nla_put_failure;
2151                         }
2152                 }
2153
2154                 state->split_start++;
2155                 if (state->split)
2156                         break;
2157                 fallthrough;
2158         case 2:
2159                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2160                                         rdev->wiphy.interface_modes))
2161                                 goto nla_put_failure;
2162                 state->split_start++;
2163                 if (state->split)
2164                         break;
2165                 fallthrough;
2166         case 3:
2167                 nl_bands = nla_nest_start_noflag(msg,
2168                                                  NL80211_ATTR_WIPHY_BANDS);
2169                 if (!nl_bands)
2170                         goto nla_put_failure;
2171
2172                 for (band = state->band_start;
2173                      band < NUM_NL80211_BANDS; band++) {
2174                         struct ieee80211_supported_band *sband;
2175
2176                         sband = rdev->wiphy.bands[band];
2177
2178                         if (!sband)
2179                                 continue;
2180
2181                         nl_band = nla_nest_start_noflag(msg, band);
2182                         if (!nl_band)
2183                                 goto nla_put_failure;
2184
2185                         switch (state->chan_start) {
2186                         case 0:
2187                                 if (nl80211_send_band_rateinfo(msg, sband))
2188                                         goto nla_put_failure;
2189                                 state->chan_start++;
2190                                 if (state->split)
2191                                         break;
2192                                 fallthrough;
2193                         default:
2194                                 /* add frequencies */
2195                                 nl_freqs = nla_nest_start_noflag(msg,
2196                                                                  NL80211_BAND_ATTR_FREQS);
2197                                 if (!nl_freqs)
2198                                         goto nla_put_failure;
2199
2200                                 for (i = state->chan_start - 1;
2201                                      i < sband->n_channels;
2202                                      i++) {
2203                                         nl_freq = nla_nest_start_noflag(msg,
2204                                                                         i);
2205                                         if (!nl_freq)
2206                                                 goto nla_put_failure;
2207
2208                                         chan = &sband->channels[i];
2209
2210                                         if (nl80211_msg_put_channel(
2211                                                         msg, &rdev->wiphy, chan,
2212                                                         state->split))
2213                                                 goto nla_put_failure;
2214
2215                                         nla_nest_end(msg, nl_freq);
2216                                         if (state->split)
2217                                                 break;
2218                                 }
2219                                 if (i < sband->n_channels)
2220                                         state->chan_start = i + 2;
2221                                 else
2222                                         state->chan_start = 0;
2223                                 nla_nest_end(msg, nl_freqs);
2224                         }
2225
2226                         nla_nest_end(msg, nl_band);
2227
2228                         if (state->split) {
2229                                 /* start again here */
2230                                 if (state->chan_start)
2231                                         band--;
2232                                 break;
2233                         }
2234                 }
2235                 nla_nest_end(msg, nl_bands);
2236
2237                 if (band < NUM_NL80211_BANDS)
2238                         state->band_start = band + 1;
2239                 else
2240                         state->band_start = 0;
2241
2242                 /* if bands & channels are done, continue outside */
2243                 if (state->band_start == 0 && state->chan_start == 0)
2244                         state->split_start++;
2245                 if (state->split)
2246                         break;
2247                 fallthrough;
2248         case 4:
2249                 nl_cmds = nla_nest_start_noflag(msg,
2250                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2251                 if (!nl_cmds)
2252                         goto nla_put_failure;
2253
2254                 i = nl80211_add_commands_unsplit(rdev, msg);
2255                 if (i < 0)
2256                         goto nla_put_failure;
2257                 if (state->split) {
2258                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2259                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2260                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2261                                 CMD(channel_switch, CHANNEL_SWITCH);
2262                         CMD(set_qos_map, SET_QOS_MAP);
2263                         if (rdev->wiphy.features &
2264                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2265                                 CMD(add_tx_ts, ADD_TX_TS);
2266                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2267                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2268                         CMD(update_ft_ies, UPDATE_FT_IES);
2269                 }
2270 #undef CMD
2271
2272                 nla_nest_end(msg, nl_cmds);
2273                 state->split_start++;
2274                 if (state->split)
2275                         break;
2276                 fallthrough;
2277         case 5:
2278                 if (rdev->ops->remain_on_channel &&
2279                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2280                     nla_put_u32(msg,
2281                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2282                                 rdev->wiphy.max_remain_on_channel_duration))
2283                         goto nla_put_failure;
2284
2285                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2286                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2287                         goto nla_put_failure;
2288
2289                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2290                         goto nla_put_failure;
2291                 state->split_start++;
2292                 if (state->split)
2293                         break;
2294                 fallthrough;
2295         case 6:
2296 #ifdef CONFIG_PM
2297                 if (nl80211_send_wowlan(msg, rdev, state->split))
2298                         goto nla_put_failure;
2299                 state->split_start++;
2300                 if (state->split)
2301                         break;
2302 #else
2303                 state->split_start++;
2304 #endif
2305                 fallthrough;
2306         case 7:
2307                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2308                                         rdev->wiphy.software_iftypes))
2309                         goto nla_put_failure;
2310
2311                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2312                                                    state->split))
2313                         goto nla_put_failure;
2314
2315                 state->split_start++;
2316                 if (state->split)
2317                         break;
2318                 fallthrough;
2319         case 8:
2320                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2321                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2322                                 rdev->wiphy.ap_sme_capa))
2323                         goto nla_put_failure;
2324
2325                 features = rdev->wiphy.features;
2326                 /*
2327                  * We can only add the per-channel limit information if the
2328                  * dump is split, otherwise it makes it too big. Therefore
2329                  * only advertise it in that case.
2330                  */
2331                 if (state->split)
2332                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2333                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2334                         goto nla_put_failure;
2335
2336                 if (rdev->wiphy.ht_capa_mod_mask &&
2337                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2338                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2339                             rdev->wiphy.ht_capa_mod_mask))
2340                         goto nla_put_failure;
2341
2342                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2343                     rdev->wiphy.max_acl_mac_addrs &&
2344                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2345                                 rdev->wiphy.max_acl_mac_addrs))
2346                         goto nla_put_failure;
2347
2348                 /*
2349                  * Any information below this point is only available to
2350                  * applications that can deal with it being split. This
2351                  * helps ensure that newly added capabilities don't break
2352                  * older tools by overrunning their buffers.
2353                  *
2354                  * We still increment split_start so that in the split
2355                  * case we'll continue with more data in the next round,
2356                  * but break unconditionally so unsplit data stops here.
2357                  */
2358                 state->split_start++;
2359                 break;
2360         case 9:
2361                 if (rdev->wiphy.extended_capabilities &&
2362                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2363                              rdev->wiphy.extended_capabilities_len,
2364                              rdev->wiphy.extended_capabilities) ||
2365                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2366                              rdev->wiphy.extended_capabilities_len,
2367                              rdev->wiphy.extended_capabilities_mask)))
2368                         goto nla_put_failure;
2369
2370                 if (rdev->wiphy.vht_capa_mod_mask &&
2371                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2372                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2373                             rdev->wiphy.vht_capa_mod_mask))
2374                         goto nla_put_failure;
2375
2376                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2377                             rdev->wiphy.perm_addr))
2378                         goto nla_put_failure;
2379
2380                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2381                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2382                             rdev->wiphy.addr_mask))
2383                         goto nla_put_failure;
2384
2385                 if (rdev->wiphy.n_addresses > 1) {
2386                         void *attr;
2387
2388                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2389                         if (!attr)
2390                                 goto nla_put_failure;
2391
2392                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2393                                 if (nla_put(msg, i + 1, ETH_ALEN,
2394                                             rdev->wiphy.addresses[i].addr))
2395                                         goto nla_put_failure;
2396
2397                         nla_nest_end(msg, attr);
2398                 }
2399
2400                 state->split_start++;
2401                 break;
2402         case 10:
2403                 if (nl80211_send_coalesce(msg, rdev))
2404                         goto nla_put_failure;
2405
2406                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2407                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2408                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2409                         goto nla_put_failure;
2410
2411                 if (rdev->wiphy.max_ap_assoc_sta &&
2412                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2413                                 rdev->wiphy.max_ap_assoc_sta))
2414                         goto nla_put_failure;
2415
2416                 state->split_start++;
2417                 break;
2418         case 11:
2419                 if (rdev->wiphy.n_vendor_commands) {
2420                         const struct nl80211_vendor_cmd_info *info;
2421                         struct nlattr *nested;
2422
2423                         nested = nla_nest_start_noflag(msg,
2424                                                        NL80211_ATTR_VENDOR_DATA);
2425                         if (!nested)
2426                                 goto nla_put_failure;
2427
2428                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2429                                 info = &rdev->wiphy.vendor_commands[i].info;
2430                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2431                                         goto nla_put_failure;
2432                         }
2433                         nla_nest_end(msg, nested);
2434                 }
2435
2436                 if (rdev->wiphy.n_vendor_events) {
2437                         const struct nl80211_vendor_cmd_info *info;
2438                         struct nlattr *nested;
2439
2440                         nested = nla_nest_start_noflag(msg,
2441                                                        NL80211_ATTR_VENDOR_EVENTS);
2442                         if (!nested)
2443                                 goto nla_put_failure;
2444
2445                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2446                                 info = &rdev->wiphy.vendor_events[i];
2447                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2448                                         goto nla_put_failure;
2449                         }
2450                         nla_nest_end(msg, nested);
2451                 }
2452                 state->split_start++;
2453                 break;
2454         case 12:
2455                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2456                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2457                                rdev->wiphy.max_num_csa_counters))
2458                         goto nla_put_failure;
2459
2460                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2461                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2462                         goto nla_put_failure;
2463
2464                 if (rdev->wiphy.max_sched_scan_reqs &&
2465                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2466                                 rdev->wiphy.max_sched_scan_reqs))
2467                         goto nla_put_failure;
2468
2469                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2470                             sizeof(rdev->wiphy.ext_features),
2471                             rdev->wiphy.ext_features))
2472                         goto nla_put_failure;
2473
2474                 if (rdev->wiphy.bss_select_support) {
2475                         struct nlattr *nested;
2476                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2477
2478                         nested = nla_nest_start_noflag(msg,
2479                                                        NL80211_ATTR_BSS_SELECT);
2480                         if (!nested)
2481                                 goto nla_put_failure;
2482
2483                         i = 0;
2484                         while (bss_select_support) {
2485                                 if ((bss_select_support & 1) &&
2486                                     nla_put_flag(msg, i))
2487                                         goto nla_put_failure;
2488                                 i++;
2489                                 bss_select_support >>= 1;
2490                         }
2491                         nla_nest_end(msg, nested);
2492                 }
2493
2494                 state->split_start++;
2495                 break;
2496         case 13:
2497                 if (rdev->wiphy.num_iftype_ext_capab &&
2498                     rdev->wiphy.iftype_ext_capab) {
2499                         struct nlattr *nested_ext_capab, *nested;
2500
2501                         nested = nla_nest_start_noflag(msg,
2502                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2503                         if (!nested)
2504                                 goto nla_put_failure;
2505
2506                         for (i = state->capa_start;
2507                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2508                                 const struct wiphy_iftype_ext_capab *capab;
2509
2510                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2511
2512                                 nested_ext_capab = nla_nest_start_noflag(msg,
2513                                                                          i);
2514                                 if (!nested_ext_capab ||
2515                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2516                                                 capab->iftype) ||
2517                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2518                                             capab->extended_capabilities_len,
2519                                             capab->extended_capabilities) ||
2520                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2521                                             capab->extended_capabilities_len,
2522                                             capab->extended_capabilities_mask))
2523                                         goto nla_put_failure;
2524
2525                                 nla_nest_end(msg, nested_ext_capab);
2526                                 if (state->split)
2527                                         break;
2528                         }
2529                         nla_nest_end(msg, nested);
2530                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2531                                 state->capa_start = i + 1;
2532                                 break;
2533                         }
2534                 }
2535
2536                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2537                                 rdev->wiphy.nan_supported_bands))
2538                         goto nla_put_failure;
2539
2540                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2541                                             NL80211_EXT_FEATURE_TXQS)) {
2542                         struct cfg80211_txq_stats txqstats = {};
2543                         int res;
2544
2545                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2546                         if (!res &&
2547                             !nl80211_put_txq_stats(msg, &txqstats,
2548                                                    NL80211_ATTR_TXQ_STATS))
2549                                 goto nla_put_failure;
2550
2551                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2552                                         rdev->wiphy.txq_limit))
2553                                 goto nla_put_failure;
2554                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2555                                         rdev->wiphy.txq_memory_limit))
2556                                 goto nla_put_failure;
2557                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2558                                         rdev->wiphy.txq_quantum))
2559                                 goto nla_put_failure;
2560                 }
2561
2562                 state->split_start++;
2563                 break;
2564         case 14:
2565                 if (nl80211_send_pmsr_capa(rdev, msg))
2566                         goto nla_put_failure;
2567
2568                 state->split_start++;
2569                 break;
2570         case 15:
2571                 if (rdev->wiphy.akm_suites &&
2572                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2573                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2574                             rdev->wiphy.akm_suites))
2575                         goto nla_put_failure;
2576
2577                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2578                         goto nla_put_failure;
2579
2580                 if (nl80211_put_tid_config_support(rdev, msg))
2581                         goto nla_put_failure;
2582
2583                 /* done */
2584                 state->split_start = 0;
2585                 break;
2586         }
2587  finish:
2588         genlmsg_end(msg, hdr);
2589         return 0;
2590
2591  nla_put_failure:
2592         genlmsg_cancel(msg, hdr);
2593         return -EMSGSIZE;
2594 }
2595
2596 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2597                                     struct netlink_callback *cb,
2598                                     struct nl80211_dump_wiphy_state *state)
2599 {
2600         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2601         int ret;
2602
2603         if (!tb)
2604                 return -ENOMEM;
2605
2606         ret = nlmsg_parse_deprecated(cb->nlh,
2607                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2608                                      tb, nl80211_fam.maxattr,
2609                                      nl80211_policy, NULL);
2610         /* ignore parse errors for backward compatibility */
2611         if (ret) {
2612                 ret = 0;
2613                 goto out;
2614         }
2615
2616         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2617         if (tb[NL80211_ATTR_WIPHY])
2618                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2619         if (tb[NL80211_ATTR_WDEV])
2620                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2621         if (tb[NL80211_ATTR_IFINDEX]) {
2622                 struct net_device *netdev;
2623                 struct cfg80211_registered_device *rdev;
2624                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2625
2626                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2627                 if (!netdev) {
2628                         ret = -ENODEV;
2629                         goto out;
2630                 }
2631                 if (netdev->ieee80211_ptr) {
2632                         rdev = wiphy_to_rdev(
2633                                 netdev->ieee80211_ptr->wiphy);
2634                         state->filter_wiphy = rdev->wiphy_idx;
2635                 }
2636         }
2637
2638         ret = 0;
2639 out:
2640         kfree(tb);
2641         return ret;
2642 }
2643
2644 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2645 {
2646         int idx = 0, ret;
2647         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2648         struct cfg80211_registered_device *rdev;
2649
2650         rtnl_lock();
2651         if (!state) {
2652                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2653                 if (!state) {
2654                         rtnl_unlock();
2655                         return -ENOMEM;
2656                 }
2657                 state->filter_wiphy = -1;
2658                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2659                 if (ret) {
2660                         kfree(state);
2661                         rtnl_unlock();
2662                         return ret;
2663                 }
2664                 cb->args[0] = (long)state;
2665         }
2666
2667         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2668                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2669                         continue;
2670                 if (++idx <= state->start)
2671                         continue;
2672                 if (state->filter_wiphy != -1 &&
2673                     state->filter_wiphy != rdev->wiphy_idx)
2674                         continue;
2675                 /* attempt to fit multiple wiphy data chunks into the skb */
2676                 do {
2677                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2678                                                  skb,
2679                                                  NETLINK_CB(cb->skb).portid,
2680                                                  cb->nlh->nlmsg_seq,
2681                                                  NLM_F_MULTI, state);
2682                         if (ret < 0) {
2683                                 /*
2684                                  * If sending the wiphy data didn't fit (ENOBUFS
2685                                  * or EMSGSIZE returned), this SKB is still
2686                                  * empty (so it's not too big because another
2687                                  * wiphy dataset is already in the skb) and
2688                                  * we've not tried to adjust the dump allocation
2689                                  * yet ... then adjust the alloc size to be
2690                                  * bigger, and return 1 but with the empty skb.
2691                                  * This results in an empty message being RX'ed
2692                                  * in userspace, but that is ignored.
2693                                  *
2694                                  * We can then retry with the larger buffer.
2695                                  */
2696                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2697                                     !skb->len && !state->split &&
2698                                     cb->min_dump_alloc < 4096) {
2699                                         cb->min_dump_alloc = 4096;
2700                                         state->split_start = 0;
2701                                         rtnl_unlock();
2702                                         return 1;
2703                                 }
2704                                 idx--;
2705                                 break;
2706                         }
2707                 } while (state->split_start > 0);
2708                 break;
2709         }
2710         rtnl_unlock();
2711
2712         state->start = idx;
2713
2714         return skb->len;
2715 }
2716
2717 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2718 {
2719         kfree((void *)cb->args[0]);
2720         return 0;
2721 }
2722
2723 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2724 {
2725         struct sk_buff *msg;
2726         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2727         struct nl80211_dump_wiphy_state state = {};
2728
2729         msg = nlmsg_new(4096, GFP_KERNEL);
2730         if (!msg)
2731                 return -ENOMEM;
2732
2733         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2734                                info->snd_portid, info->snd_seq, 0,
2735                                &state) < 0) {
2736                 nlmsg_free(msg);
2737                 return -ENOBUFS;
2738         }
2739
2740         return genlmsg_reply(msg, info);
2741 }
2742
2743 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2744         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2745         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2746         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2747         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2748         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2749 };
2750
2751 static int parse_txq_params(struct nlattr *tb[],
2752                             struct ieee80211_txq_params *txq_params)
2753 {
2754         u8 ac;
2755
2756         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2757             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2758             !tb[NL80211_TXQ_ATTR_AIFS])
2759                 return -EINVAL;
2760
2761         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2762         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2763         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2764         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2765         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2766
2767         if (ac >= NL80211_NUM_ACS)
2768                 return -EINVAL;
2769         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2770         return 0;
2771 }
2772
2773 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2774 {
2775         /*
2776          * You can only set the channel explicitly for WDS interfaces,
2777          * all others have their channel managed via their respective
2778          * "establish a connection" command (connect, join, ...)
2779          *
2780          * For AP/GO and mesh mode, the channel can be set with the
2781          * channel userspace API, but is only stored and passed to the
2782          * low-level driver when the AP starts or the mesh is joined.
2783          * This is for backward compatibility, userspace can also give
2784          * the channel in the start-ap or join-mesh commands instead.
2785          *
2786          * Monitors are special as they are normally slaved to
2787          * whatever else is going on, so they have their own special
2788          * operation to set the monitor channel if possible.
2789          */
2790         return !wdev ||
2791                 wdev->iftype == NL80211_IFTYPE_AP ||
2792                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2793                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2794                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2795 }
2796
2797 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2798                           struct genl_info *info,
2799                           struct cfg80211_chan_def *chandef)
2800 {
2801         struct netlink_ext_ack *extack = info->extack;
2802         struct nlattr **attrs = info->attrs;
2803         u32 control_freq;
2804
2805         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2806                 return -EINVAL;
2807
2808         control_freq = MHZ_TO_KHZ(
2809                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2810         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2811                 control_freq +=
2812                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2813
2814         memset(chandef, 0, sizeof(*chandef));
2815         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2816         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2817         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2818         chandef->freq1_offset = control_freq % 1000;
2819         chandef->center_freq2 = 0;
2820
2821         /* Primary channel not allowed */
2822         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2823                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2824                                     "Channel is disabled");
2825                 return -EINVAL;
2826         }
2827
2828         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2829                 enum nl80211_channel_type chantype;
2830
2831                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2832
2833                 switch (chantype) {
2834                 case NL80211_CHAN_NO_HT:
2835                 case NL80211_CHAN_HT20:
2836                 case NL80211_CHAN_HT40PLUS:
2837                 case NL80211_CHAN_HT40MINUS:
2838                         cfg80211_chandef_create(chandef, chandef->chan,
2839                                                 chantype);
2840                         /* user input for center_freq is incorrect */
2841                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2842                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2843                                 NL_SET_ERR_MSG_ATTR(extack,
2844                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2845                                                     "bad center frequency 1");
2846                                 return -EINVAL;
2847                         }
2848                         /* center_freq2 must be zero */
2849                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2850                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2851                                 NL_SET_ERR_MSG_ATTR(extack,
2852                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2853                                                     "center frequency 2 can't be used");
2854                                 return -EINVAL;
2855                         }
2856                         break;
2857                 default:
2858                         NL_SET_ERR_MSG_ATTR(extack,
2859                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2860                                             "invalid channel type");
2861                         return -EINVAL;
2862                 }
2863         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2864                 chandef->width =
2865                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2866                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
2867                         chandef->center_freq1 =
2868                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2869                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
2870                                 chandef->freq1_offset = nla_get_u32(
2871                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
2872                         else
2873                                 chandef->freq1_offset = 0;
2874                 }
2875                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2876                         chandef->center_freq2 =
2877                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2878         }
2879
2880         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2881                 chandef->edmg.channels =
2882                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2883
2884                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2885                         chandef->edmg.bw_config =
2886                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2887         } else {
2888                 chandef->edmg.bw_config = 0;
2889                 chandef->edmg.channels = 0;
2890         }
2891
2892         if (!cfg80211_chandef_valid(chandef)) {
2893                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2894                 return -EINVAL;
2895         }
2896
2897         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2898                                      IEEE80211_CHAN_DISABLED)) {
2899                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2900                 return -EINVAL;
2901         }
2902
2903         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2904              chandef->width == NL80211_CHAN_WIDTH_10) &&
2905             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2906                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2907                 return -EINVAL;
2908         }
2909
2910         return 0;
2911 }
2912
2913 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2914                                  struct net_device *dev,
2915                                  struct genl_info *info)
2916 {
2917         struct cfg80211_chan_def chandef;
2918         int result;
2919         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2920         struct wireless_dev *wdev = NULL;
2921
2922         if (dev)
2923                 wdev = dev->ieee80211_ptr;
2924         if (!nl80211_can_set_dev_channel(wdev))
2925                 return -EOPNOTSUPP;
2926         if (wdev)
2927                 iftype = wdev->iftype;
2928
2929         result = nl80211_parse_chandef(rdev, info, &chandef);
2930         if (result)
2931                 return result;
2932
2933         switch (iftype) {
2934         case NL80211_IFTYPE_AP:
2935         case NL80211_IFTYPE_P2P_GO:
2936                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2937                                                    iftype)) {
2938                         result = -EINVAL;
2939                         break;
2940                 }
2941                 if (wdev->beacon_interval) {
2942                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2943                             !(rdev->wiphy.features &
2944                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2945                                 result = -EBUSY;
2946                                 break;
2947                         }
2948
2949                         /* Only allow dynamic channel width changes */
2950                         if (chandef.chan != wdev->preset_chandef.chan) {
2951                                 result = -EBUSY;
2952                                 break;
2953                         }
2954                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2955                         if (result)
2956                                 break;
2957                 }
2958                 wdev->preset_chandef = chandef;
2959                 result = 0;
2960                 break;
2961         case NL80211_IFTYPE_MESH_POINT:
2962                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2963                 break;
2964         case NL80211_IFTYPE_MONITOR:
2965                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2966                 break;
2967         default:
2968                 result = -EINVAL;
2969         }
2970
2971         return result;
2972 }
2973
2974 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2975 {
2976         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2977         struct net_device *netdev = info->user_ptr[1];
2978
2979         return __nl80211_set_channel(rdev, netdev, info);
2980 }
2981
2982 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2983 {
2984         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2985         struct net_device *dev = info->user_ptr[1];
2986         struct wireless_dev *wdev = dev->ieee80211_ptr;
2987         const u8 *bssid;
2988
2989         if (!info->attrs[NL80211_ATTR_MAC])
2990                 return -EINVAL;
2991
2992         if (netif_running(dev))
2993                 return -EBUSY;
2994
2995         if (!rdev->ops->set_wds_peer)
2996                 return -EOPNOTSUPP;
2997
2998         if (wdev->iftype != NL80211_IFTYPE_WDS)
2999                 return -EOPNOTSUPP;
3000
3001         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3002         return rdev_set_wds_peer(rdev, dev, bssid);
3003 }
3004
3005 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3006 {
3007         struct cfg80211_registered_device *rdev;
3008         struct net_device *netdev = NULL;
3009         struct wireless_dev *wdev;
3010         int result = 0, rem_txq_params = 0;
3011         struct nlattr *nl_txq_params;
3012         u32 changed;
3013         u8 retry_short = 0, retry_long = 0;
3014         u32 frag_threshold = 0, rts_threshold = 0;
3015         u8 coverage_class = 0;
3016         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3017
3018         ASSERT_RTNL();
3019
3020         /*
3021          * Try to find the wiphy and netdev. Normally this
3022          * function shouldn't need the netdev, but this is
3023          * done for backward compatibility -- previously
3024          * setting the channel was done per wiphy, but now
3025          * it is per netdev. Previous userland like hostapd
3026          * also passed a netdev to set_wiphy, so that it is
3027          * possible to let that go to the right netdev!
3028          */
3029
3030         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3031                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3032
3033                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3034                 if (netdev && netdev->ieee80211_ptr)
3035                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3036                 else
3037                         netdev = NULL;
3038         }
3039
3040         if (!netdev) {
3041                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3042                                                   info->attrs);
3043                 if (IS_ERR(rdev))
3044                         return PTR_ERR(rdev);
3045                 wdev = NULL;
3046                 netdev = NULL;
3047                 result = 0;
3048         } else
3049                 wdev = netdev->ieee80211_ptr;
3050
3051         /*
3052          * end workaround code, by now the rdev is available
3053          * and locked, and wdev may or may not be NULL.
3054          */
3055
3056         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3057                 result = cfg80211_dev_rename(
3058                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3059
3060         if (result)
3061                 return result;
3062
3063         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3064                 struct ieee80211_txq_params txq_params;
3065                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3066
3067                 if (!rdev->ops->set_txq_params)
3068                         return -EOPNOTSUPP;
3069
3070                 if (!netdev)
3071                         return -EINVAL;
3072
3073                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3074                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3075                         return -EINVAL;
3076
3077                 if (!netif_running(netdev))
3078                         return -ENETDOWN;
3079
3080                 nla_for_each_nested(nl_txq_params,
3081                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3082                                     rem_txq_params) {
3083                         result = nla_parse_nested_deprecated(tb,
3084                                                              NL80211_TXQ_ATTR_MAX,
3085                                                              nl_txq_params,
3086                                                              txq_params_policy,
3087                                                              info->extack);
3088                         if (result)
3089                                 return result;
3090                         result = parse_txq_params(tb, &txq_params);
3091                         if (result)
3092                                 return result;
3093
3094                         result = rdev_set_txq_params(rdev, netdev,
3095                                                      &txq_params);
3096                         if (result)
3097                                 return result;
3098                 }
3099         }
3100
3101         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3102                 result = __nl80211_set_channel(
3103                         rdev,
3104                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3105                         info);
3106                 if (result)
3107                         return result;
3108         }
3109
3110         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3111                 struct wireless_dev *txp_wdev = wdev;
3112                 enum nl80211_tx_power_setting type;
3113                 int idx, mbm = 0;
3114
3115                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3116                         txp_wdev = NULL;
3117
3118                 if (!rdev->ops->set_tx_power)
3119                         return -EOPNOTSUPP;
3120
3121                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3122                 type = nla_get_u32(info->attrs[idx]);
3123
3124                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3125                     (type != NL80211_TX_POWER_AUTOMATIC))
3126                         return -EINVAL;
3127
3128                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3129                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3130                         mbm = nla_get_u32(info->attrs[idx]);
3131                 }
3132
3133                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3134                 if (result)
3135                         return result;
3136         }
3137
3138         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3139             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3140                 u32 tx_ant, rx_ant;
3141
3142                 if ((!rdev->wiphy.available_antennas_tx &&
3143                      !rdev->wiphy.available_antennas_rx) ||
3144                     !rdev->ops->set_antenna)
3145                         return -EOPNOTSUPP;
3146
3147                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3148                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3149
3150                 /* reject antenna configurations which don't match the
3151                  * available antenna masks, except for the "all" mask */
3152                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3153                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3154                         return -EINVAL;
3155
3156                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3157                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3158
3159                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3160                 if (result)
3161                         return result;
3162         }
3163
3164         changed = 0;
3165
3166         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3167                 retry_short = nla_get_u8(
3168                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3169
3170                 changed |= WIPHY_PARAM_RETRY_SHORT;
3171         }
3172
3173         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3174                 retry_long = nla_get_u8(
3175                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3176
3177                 changed |= WIPHY_PARAM_RETRY_LONG;
3178         }
3179
3180         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3181                 frag_threshold = nla_get_u32(
3182                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3183                 if (frag_threshold < 256)
3184                         return -EINVAL;
3185
3186                 if (frag_threshold != (u32) -1) {
3187                         /*
3188                          * Fragments (apart from the last one) are required to
3189                          * have even length. Make the fragmentation code
3190                          * simpler by stripping LSB should someone try to use
3191                          * odd threshold value.
3192                          */
3193                         frag_threshold &= ~0x1;
3194                 }
3195                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3196         }
3197
3198         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3199                 rts_threshold = nla_get_u32(
3200                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3201                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3202         }
3203
3204         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3205                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3206                         return -EINVAL;
3207
3208                 coverage_class = nla_get_u8(
3209                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3210                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3211         }
3212
3213         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3214                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3215                         return -EOPNOTSUPP;
3216
3217                 changed |= WIPHY_PARAM_DYN_ACK;
3218         }
3219
3220         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3221                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3222                                              NL80211_EXT_FEATURE_TXQS))
3223                         return -EOPNOTSUPP;
3224                 txq_limit = nla_get_u32(
3225                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3226                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3227         }
3228
3229         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3230                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3231                                              NL80211_EXT_FEATURE_TXQS))
3232                         return -EOPNOTSUPP;
3233                 txq_memory_limit = nla_get_u32(
3234                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3235                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3236         }
3237
3238         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3239                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3240                                              NL80211_EXT_FEATURE_TXQS))
3241                         return -EOPNOTSUPP;
3242                 txq_quantum = nla_get_u32(
3243                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3244                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3245         }
3246
3247         if (changed) {
3248                 u8 old_retry_short, old_retry_long;
3249                 u32 old_frag_threshold, old_rts_threshold;
3250                 u8 old_coverage_class;
3251                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3252
3253                 if (!rdev->ops->set_wiphy_params)
3254                         return -EOPNOTSUPP;
3255
3256                 old_retry_short = rdev->wiphy.retry_short;
3257                 old_retry_long = rdev->wiphy.retry_long;
3258                 old_frag_threshold = rdev->wiphy.frag_threshold;
3259                 old_rts_threshold = rdev->wiphy.rts_threshold;
3260                 old_coverage_class = rdev->wiphy.coverage_class;
3261                 old_txq_limit = rdev->wiphy.txq_limit;
3262                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3263                 old_txq_quantum = rdev->wiphy.txq_quantum;
3264
3265                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3266                         rdev->wiphy.retry_short = retry_short;
3267                 if (changed & WIPHY_PARAM_RETRY_LONG)
3268                         rdev->wiphy.retry_long = retry_long;
3269                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3270                         rdev->wiphy.frag_threshold = frag_threshold;
3271                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3272                         rdev->wiphy.rts_threshold = rts_threshold;
3273                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3274                         rdev->wiphy.coverage_class = coverage_class;
3275                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3276                         rdev->wiphy.txq_limit = txq_limit;
3277                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3278                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3279                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3280                         rdev->wiphy.txq_quantum = txq_quantum;
3281
3282                 result = rdev_set_wiphy_params(rdev, changed);
3283                 if (result) {
3284                         rdev->wiphy.retry_short = old_retry_short;
3285                         rdev->wiphy.retry_long = old_retry_long;
3286                         rdev->wiphy.frag_threshold = old_frag_threshold;
3287                         rdev->wiphy.rts_threshold = old_rts_threshold;
3288                         rdev->wiphy.coverage_class = old_coverage_class;
3289                         rdev->wiphy.txq_limit = old_txq_limit;
3290                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3291                         rdev->wiphy.txq_quantum = old_txq_quantum;
3292                         return result;
3293                 }
3294         }
3295         return 0;
3296 }
3297
3298 static int nl80211_send_chandef(struct sk_buff *msg,
3299                                 const struct cfg80211_chan_def *chandef)
3300 {
3301         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3302                 return -EINVAL;
3303
3304         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3305                         chandef->chan->center_freq))
3306                 return -ENOBUFS;
3307         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3308                         chandef->chan->freq_offset))
3309                 return -ENOBUFS;
3310         switch (chandef->width) {
3311         case NL80211_CHAN_WIDTH_20_NOHT:
3312         case NL80211_CHAN_WIDTH_20:
3313         case NL80211_CHAN_WIDTH_40:
3314                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3315                                 cfg80211_get_chandef_type(chandef)))
3316                         return -ENOBUFS;
3317                 break;
3318         default:
3319                 break;
3320         }
3321         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3322                 return -ENOBUFS;
3323         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3324                 return -ENOBUFS;
3325         if (chandef->center_freq2 &&
3326             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3327                 return -ENOBUFS;
3328         return 0;
3329 }
3330
3331 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3332                               struct cfg80211_registered_device *rdev,
3333                               struct wireless_dev *wdev,
3334                               enum nl80211_commands cmd)
3335 {
3336         struct net_device *dev = wdev->netdev;
3337         void *hdr;
3338
3339         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3340                 cmd != NL80211_CMD_DEL_INTERFACE &&
3341                 cmd != NL80211_CMD_SET_INTERFACE);
3342
3343         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3344         if (!hdr)
3345                 return -1;
3346
3347         if (dev &&
3348             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3349              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3350                 goto nla_put_failure;
3351
3352         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3353             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3354             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3355                               NL80211_ATTR_PAD) ||
3356             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3357             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3358                         rdev->devlist_generation ^
3359                         (cfg80211_rdev_list_generation << 2)) ||
3360             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3361                 goto nla_put_failure;
3362
3363         if (rdev->ops->get_channel) {
3364                 int ret;
3365                 struct cfg80211_chan_def chandef = {};
3366
3367                 ret = rdev_get_channel(rdev, wdev, &chandef);
3368                 if (ret == 0) {
3369                         if (nl80211_send_chandef(msg, &chandef))
3370                                 goto nla_put_failure;
3371                 }
3372         }
3373
3374         if (rdev->ops->get_tx_power) {
3375                 int dbm, ret;
3376
3377                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3378                 if (ret == 0 &&
3379                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3380                                 DBM_TO_MBM(dbm)))
3381                         goto nla_put_failure;
3382         }
3383
3384         wdev_lock(wdev);
3385         switch (wdev->iftype) {
3386         case NL80211_IFTYPE_AP:
3387                 if (wdev->ssid_len &&
3388                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3389                         goto nla_put_failure_locked;
3390                 break;
3391         case NL80211_IFTYPE_STATION:
3392         case NL80211_IFTYPE_P2P_CLIENT:
3393         case NL80211_IFTYPE_ADHOC: {
3394                 const u8 *ssid_ie;
3395                 if (!wdev->current_bss)
3396                         break;
3397                 rcu_read_lock();
3398                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3399                                                WLAN_EID_SSID);
3400                 if (ssid_ie &&
3401                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3402                         goto nla_put_failure_rcu_locked;
3403                 rcu_read_unlock();
3404                 break;
3405                 }
3406         default:
3407                 /* nothing */
3408                 break;
3409         }
3410         wdev_unlock(wdev);
3411
3412         if (rdev->ops->get_txq_stats) {
3413                 struct cfg80211_txq_stats txqstats = {};
3414                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3415
3416                 if (ret == 0 &&
3417                     !nl80211_put_txq_stats(msg, &txqstats,
3418                                            NL80211_ATTR_TXQ_STATS))
3419                         goto nla_put_failure;
3420         }
3421
3422         genlmsg_end(msg, hdr);
3423         return 0;
3424
3425  nla_put_failure_rcu_locked:
3426         rcu_read_unlock();
3427  nla_put_failure_locked:
3428         wdev_unlock(wdev);
3429  nla_put_failure:
3430         genlmsg_cancel(msg, hdr);
3431         return -EMSGSIZE;
3432 }
3433
3434 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3435 {
3436         int wp_idx = 0;
3437         int if_idx = 0;
3438         int wp_start = cb->args[0];
3439         int if_start = cb->args[1];
3440         int filter_wiphy = -1;
3441         struct cfg80211_registered_device *rdev;
3442         struct wireless_dev *wdev;
3443         int ret;
3444
3445         rtnl_lock();
3446         if (!cb->args[2]) {
3447                 struct nl80211_dump_wiphy_state state = {
3448                         .filter_wiphy = -1,
3449                 };
3450
3451                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3452                 if (ret)
3453                         goto out_unlock;
3454
3455                 filter_wiphy = state.filter_wiphy;
3456
3457                 /*
3458                  * if filtering, set cb->args[2] to +1 since 0 is the default
3459                  * value needed to determine that parsing is necessary.
3460                  */
3461                 if (filter_wiphy >= 0)
3462                         cb->args[2] = filter_wiphy + 1;
3463                 else
3464                         cb->args[2] = -1;
3465         } else if (cb->args[2] > 0) {
3466                 filter_wiphy = cb->args[2] - 1;
3467         }
3468
3469         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3470                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3471                         continue;
3472                 if (wp_idx < wp_start) {
3473                         wp_idx++;
3474                         continue;
3475                 }
3476
3477                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3478                         continue;
3479
3480                 if_idx = 0;
3481
3482                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3483                         if (if_idx < if_start) {
3484                                 if_idx++;
3485                                 continue;
3486                         }
3487                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3488                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3489                                                rdev, wdev,
3490                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3491                                 goto out;
3492                         }
3493                         if_idx++;
3494                 }
3495
3496                 wp_idx++;
3497         }
3498  out:
3499         cb->args[0] = wp_idx;
3500         cb->args[1] = if_idx;
3501
3502         ret = skb->len;
3503  out_unlock:
3504         rtnl_unlock();
3505
3506         return ret;
3507 }
3508
3509 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3510 {
3511         struct sk_buff *msg;
3512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3513         struct wireless_dev *wdev = info->user_ptr[1];
3514
3515         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3516         if (!msg)
3517                 return -ENOMEM;
3518
3519         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3520                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3521                 nlmsg_free(msg);
3522                 return -ENOBUFS;
3523         }
3524
3525         return genlmsg_reply(msg, info);
3526 }
3527
3528 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3529         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3530         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3531         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3532         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3533         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3534         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3535 };
3536
3537 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3538 {
3539         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3540         int flag;
3541
3542         *mntrflags = 0;
3543
3544         if (!nla)
3545                 return -EINVAL;
3546
3547         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3548                 return -EINVAL;
3549
3550         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3551                 if (flags[flag])
3552                         *mntrflags |= (1<<flag);
3553
3554         *mntrflags |= MONITOR_FLAG_CHANGED;
3555
3556         return 0;
3557 }
3558
3559 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3560                                      enum nl80211_iftype type,
3561                                      struct genl_info *info,
3562                                      struct vif_params *params)
3563 {
3564         bool change = false;
3565         int err;
3566
3567         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3568                 if (type != NL80211_IFTYPE_MONITOR)
3569                         return -EINVAL;
3570
3571                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3572                                           &params->flags);
3573                 if (err)
3574                         return err;
3575
3576                 change = true;
3577         }
3578
3579         if (params->flags & MONITOR_FLAG_ACTIVE &&
3580             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3581                 return -EOPNOTSUPP;
3582
3583         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3584                 const u8 *mumimo_groups;
3585                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3586
3587                 if (type != NL80211_IFTYPE_MONITOR)
3588                         return -EINVAL;
3589
3590                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3591                         return -EOPNOTSUPP;
3592
3593                 mumimo_groups =
3594                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3595
3596                 /* bits 0 and 63 are reserved and must be zero */
3597                 if ((mumimo_groups[0] & BIT(0)) ||
3598                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3599                         return -EINVAL;
3600
3601                 params->vht_mumimo_groups = mumimo_groups;
3602                 change = true;
3603         }
3604
3605         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3606                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3607
3608                 if (type != NL80211_IFTYPE_MONITOR)
3609                         return -EINVAL;
3610
3611                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3612                         return -EOPNOTSUPP;
3613
3614                 params->vht_mumimo_follow_addr =
3615                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3616                 change = true;
3617         }
3618
3619         return change ? 1 : 0;
3620 }
3621
3622 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3623                                struct net_device *netdev, u8 use_4addr,
3624                                enum nl80211_iftype iftype)
3625 {
3626         if (!use_4addr) {
3627                 if (netdev && netif_is_bridge_port(netdev))
3628                         return -EBUSY;
3629                 return 0;
3630         }
3631
3632         switch (iftype) {
3633         case NL80211_IFTYPE_AP_VLAN:
3634                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3635                         return 0;
3636                 break;
3637         case NL80211_IFTYPE_STATION:
3638                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3639                         return 0;
3640                 break;
3641         default:
3642                 break;
3643         }
3644
3645         return -EOPNOTSUPP;
3646 }
3647
3648 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3649 {
3650         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3651         struct vif_params params;
3652         int err;
3653         enum nl80211_iftype otype, ntype;
3654         struct net_device *dev = info->user_ptr[1];
3655         bool change = false;
3656
3657         memset(&params, 0, sizeof(params));
3658
3659         otype = ntype = dev->ieee80211_ptr->iftype;
3660
3661         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3662                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3663                 if (otype != ntype)
3664                         change = true;
3665         }
3666
3667         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3668                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3669
3670                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3671                         return -EINVAL;
3672                 if (netif_running(dev))
3673                         return -EBUSY;
3674
3675                 wdev_lock(wdev);
3676                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3677                              IEEE80211_MAX_MESH_ID_LEN);
3678                 wdev->mesh_id_up_len =
3679                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3680                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3681                        wdev->mesh_id_up_len);
3682                 wdev_unlock(wdev);
3683         }
3684
3685         if (info->attrs[NL80211_ATTR_4ADDR]) {
3686                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3687                 change = true;
3688                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3689                 if (err)
3690                         return err;
3691         } else {
3692                 params.use_4addr = -1;
3693         }
3694
3695         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3696         if (err < 0)
3697                 return err;
3698         if (err > 0)
3699                 change = true;
3700
3701         if (change)
3702                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3703         else
3704                 err = 0;
3705
3706         if (!err && params.use_4addr != -1)
3707                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3708
3709         if (change && !err) {
3710                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3711
3712                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3713         }
3714
3715         return err;
3716 }
3717
3718 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3719 {
3720         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3721         struct vif_params params;
3722         struct wireless_dev *wdev;
3723         struct sk_buff *msg;
3724         int err;
3725         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3726
3727         /* to avoid failing a new interface creation due to pending removal */
3728         cfg80211_destroy_ifaces(rdev);
3729
3730         memset(&params, 0, sizeof(params));
3731
3732         if (!info->attrs[NL80211_ATTR_IFNAME])
3733                 return -EINVAL;
3734
3735         if (info->attrs[NL80211_ATTR_IFTYPE])
3736                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3737
3738         if (!rdev->ops->add_virtual_intf)
3739                 return -EOPNOTSUPP;
3740
3741         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3742              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3743             info->attrs[NL80211_ATTR_MAC]) {
3744                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3745                            ETH_ALEN);
3746                 if (!is_valid_ether_addr(params.macaddr))
3747                         return -EADDRNOTAVAIL;
3748         }
3749
3750         if (info->attrs[NL80211_ATTR_4ADDR]) {
3751                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3752                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3753                 if (err)
3754                         return err;
3755         }
3756
3757         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3758                 return -EOPNOTSUPP;
3759
3760         err = nl80211_parse_mon_options(rdev, type, info, &params);
3761         if (err < 0)
3762                 return err;
3763
3764         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3765         if (!msg)
3766                 return -ENOMEM;
3767
3768         wdev = rdev_add_virtual_intf(rdev,
3769                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3770                                 NET_NAME_USER, type, &params);
3771         if (WARN_ON(!wdev)) {
3772                 nlmsg_free(msg);
3773                 return -EPROTO;
3774         } else if (IS_ERR(wdev)) {
3775                 nlmsg_free(msg);
3776                 return PTR_ERR(wdev);
3777         }
3778
3779         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3780                 wdev->owner_nlportid = info->snd_portid;
3781
3782         switch (type) {
3783         case NL80211_IFTYPE_MESH_POINT:
3784                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3785                         break;
3786                 wdev_lock(wdev);
3787                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3788                              IEEE80211_MAX_MESH_ID_LEN);
3789                 wdev->mesh_id_up_len =
3790                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3791                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3792                        wdev->mesh_id_up_len);
3793                 wdev_unlock(wdev);
3794                 break;
3795         case NL80211_IFTYPE_NAN:
3796         case NL80211_IFTYPE_P2P_DEVICE:
3797                 /*
3798                  * P2P Device and NAN do not have a netdev, so don't go
3799                  * through the netdev notifier and must be added here
3800                  */
3801                 cfg80211_init_wdev(rdev, wdev);
3802                 break;
3803         default:
3804                 break;
3805         }
3806
3807         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3808                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3809                 nlmsg_free(msg);
3810                 return -ENOBUFS;
3811         }
3812
3813         return genlmsg_reply(msg, info);
3814 }
3815
3816 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3817 {
3818         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3819         struct wireless_dev *wdev = info->user_ptr[1];
3820
3821         if (!rdev->ops->del_virtual_intf)
3822                 return -EOPNOTSUPP;
3823
3824         /*
3825          * If we remove a wireless device without a netdev then clear
3826          * user_ptr[1] so that nl80211_post_doit won't dereference it
3827          * to check if it needs to do dev_put(). Otherwise it crashes
3828          * since the wdev has been freed, unlike with a netdev where
3829          * we need the dev_put() for the netdev to really be freed.
3830          */
3831         if (!wdev->netdev)
3832                 info->user_ptr[1] = NULL;
3833
3834         return rdev_del_virtual_intf(rdev, wdev);
3835 }
3836
3837 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3838 {
3839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3840         struct net_device *dev = info->user_ptr[1];
3841         u16 noack_map;
3842
3843         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3844                 return -EINVAL;
3845
3846         if (!rdev->ops->set_noack_map)
3847                 return -EOPNOTSUPP;
3848
3849         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3850
3851         return rdev_set_noack_map(rdev, dev, noack_map);
3852 }
3853
3854 struct get_key_cookie {
3855         struct sk_buff *msg;
3856         int error;
3857         int idx;
3858 };
3859
3860 static void get_key_callback(void *c, struct key_params *params)
3861 {
3862         struct nlattr *key;
3863         struct get_key_cookie *cookie = c;
3864
3865         if ((params->key &&
3866              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3867                      params->key_len, params->key)) ||
3868             (params->seq &&
3869              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3870                      params->seq_len, params->seq)) ||
3871             (params->cipher &&
3872              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3873                          params->cipher)))
3874                 goto nla_put_failure;
3875
3876         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3877         if (!key)
3878                 goto nla_put_failure;
3879
3880         if ((params->key &&
3881              nla_put(cookie->msg, NL80211_KEY_DATA,
3882                      params->key_len, params->key)) ||
3883             (params->seq &&
3884              nla_put(cookie->msg, NL80211_KEY_SEQ,
3885                      params->seq_len, params->seq)) ||
3886             (params->cipher &&
3887              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3888                          params->cipher)))
3889                 goto nla_put_failure;
3890
3891         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3892                 goto nla_put_failure;
3893
3894         nla_nest_end(cookie->msg, key);
3895
3896         return;
3897  nla_put_failure:
3898         cookie->error = 1;
3899 }
3900
3901 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3902 {
3903         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3904         int err;
3905         struct net_device *dev = info->user_ptr[1];
3906         u8 key_idx = 0;
3907         const u8 *mac_addr = NULL;
3908         bool pairwise;
3909         struct get_key_cookie cookie = {
3910                 .error = 0,
3911         };
3912         void *hdr;
3913         struct sk_buff *msg;
3914         bool bigtk_support = false;
3915
3916         if (wiphy_ext_feature_isset(&rdev->wiphy,
3917                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
3918                 bigtk_support = true;
3919
3920         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
3921              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
3922             wiphy_ext_feature_isset(&rdev->wiphy,
3923                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
3924                 bigtk_support = true;
3925
3926         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
3927                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3928
3929                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
3930                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
3931                         return -EINVAL;
3932                 }
3933         }
3934
3935         if (info->attrs[NL80211_ATTR_MAC])
3936                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3937
3938         pairwise = !!mac_addr;
3939         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3940                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3941
3942                 if (kt != NL80211_KEYTYPE_GROUP &&
3943                     kt != NL80211_KEYTYPE_PAIRWISE)
3944                         return -EINVAL;
3945                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3946         }
3947
3948         if (!rdev->ops->get_key)
3949                 return -EOPNOTSUPP;
3950
3951         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3952                 return -ENOENT;
3953
3954         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3955         if (!msg)
3956                 return -ENOMEM;
3957
3958         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3959                              NL80211_CMD_NEW_KEY);
3960         if (!hdr)
3961                 goto nla_put_failure;
3962
3963         cookie.msg = msg;
3964         cookie.idx = key_idx;
3965
3966         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3967             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3968                 goto nla_put_failure;
3969         if (mac_addr &&
3970             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3971                 goto nla_put_failure;
3972
3973         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3974                            get_key_callback);
3975
3976         if (err)
3977                 goto free_msg;
3978
3979         if (cookie.error)
3980                 goto nla_put_failure;
3981
3982         genlmsg_end(msg, hdr);
3983         return genlmsg_reply(msg, info);
3984
3985  nla_put_failure:
3986         err = -ENOBUFS;
3987  free_msg:
3988         nlmsg_free(msg);
3989         return err;
3990 }
3991
3992 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3993 {
3994         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3995         struct key_parse key;
3996         int err;
3997         struct net_device *dev = info->user_ptr[1];
3998
3999         err = nl80211_parse_key(info, &key);
4000         if (err)
4001                 return err;
4002
4003         if (key.idx < 0)
4004                 return -EINVAL;
4005
4006         /* Only support setting default key and
4007          * Extended Key ID action NL80211_KEY_SET_TX.
4008          */
4009         if (!key.def && !key.defmgmt && !key.defbeacon &&
4010             !(key.p.mode == NL80211_KEY_SET_TX))
4011                 return -EINVAL;
4012
4013         wdev_lock(dev->ieee80211_ptr);
4014
4015         if (key.def) {
4016                 if (!rdev->ops->set_default_key) {
4017                         err = -EOPNOTSUPP;
4018                         goto out;
4019                 }
4020
4021                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4022                 if (err)
4023                         goto out;
4024
4025                 err = rdev_set_default_key(rdev, dev, key.idx,
4026                                                  key.def_uni, key.def_multi);
4027
4028                 if (err)
4029                         goto out;
4030
4031 #ifdef CONFIG_CFG80211_WEXT
4032                 dev->ieee80211_ptr->wext.default_key = key.idx;
4033 #endif
4034         } else if (key.defmgmt) {
4035                 if (key.def_uni || !key.def_multi) {
4036                         err = -EINVAL;
4037                         goto out;
4038                 }
4039
4040                 if (!rdev->ops->set_default_mgmt_key) {
4041                         err = -EOPNOTSUPP;
4042                         goto out;
4043                 }
4044
4045                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4046                 if (err)
4047                         goto out;
4048
4049                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4050                 if (err)
4051                         goto out;
4052
4053 #ifdef CONFIG_CFG80211_WEXT
4054                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4055 #endif
4056         } else if (key.defbeacon) {
4057                 if (key.def_uni || !key.def_multi) {
4058                         err = -EINVAL;
4059                         goto out;
4060                 }
4061
4062                 if (!rdev->ops->set_default_beacon_key) {
4063                         err = -EOPNOTSUPP;
4064                         goto out;
4065                 }
4066
4067                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4068                 if (err)
4069                         goto out;
4070
4071                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4072                 if (err)
4073                         goto out;
4074         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4075                    wiphy_ext_feature_isset(&rdev->wiphy,
4076                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4077                 u8 *mac_addr = NULL;
4078
4079                 if (info->attrs[NL80211_ATTR_MAC])
4080                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4081
4082                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4083                         err = -EINVAL;
4084                         goto out;
4085                 }
4086
4087                 err = rdev_add_key(rdev, dev, key.idx,
4088                                    NL80211_KEYTYPE_PAIRWISE,
4089                                    mac_addr, &key.p);
4090         } else {
4091                 err = -EINVAL;
4092         }
4093  out:
4094         wdev_unlock(dev->ieee80211_ptr);
4095
4096         return err;
4097 }
4098
4099 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4100 {
4101         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4102         int err;
4103         struct net_device *dev = info->user_ptr[1];
4104         struct key_parse key;
4105         const u8 *mac_addr = NULL;
4106
4107         err = nl80211_parse_key(info, &key);
4108         if (err)
4109                 return err;
4110
4111         if (!key.p.key) {
4112                 GENL_SET_ERR_MSG(info, "no key");
4113                 return -EINVAL;
4114         }
4115
4116         if (info->attrs[NL80211_ATTR_MAC])
4117                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4118
4119         if (key.type == -1) {
4120                 if (mac_addr)
4121                         key.type = NL80211_KEYTYPE_PAIRWISE;
4122                 else
4123                         key.type = NL80211_KEYTYPE_GROUP;
4124         }
4125
4126         /* for now */
4127         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4128             key.type != NL80211_KEYTYPE_GROUP) {
4129                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4130                 return -EINVAL;
4131         }
4132
4133         if (key.type == NL80211_KEYTYPE_GROUP &&
4134             info->attrs[NL80211_ATTR_VLAN_ID])
4135                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4136
4137         if (!rdev->ops->add_key)
4138                 return -EOPNOTSUPP;
4139
4140         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4141                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4142                                            mac_addr)) {
4143                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4144                 return -EINVAL;
4145         }
4146
4147         wdev_lock(dev->ieee80211_ptr);
4148         err = nl80211_key_allowed(dev->ieee80211_ptr);
4149         if (err)
4150                 GENL_SET_ERR_MSG(info, "key not allowed");
4151         if (!err) {
4152                 err = rdev_add_key(rdev, dev, key.idx,
4153                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4154                                     mac_addr, &key.p);
4155                 if (err)
4156                         GENL_SET_ERR_MSG(info, "key addition failed");
4157         }
4158         wdev_unlock(dev->ieee80211_ptr);
4159
4160         return err;
4161 }
4162
4163 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4164 {
4165         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4166         int err;
4167         struct net_device *dev = info->user_ptr[1];
4168         u8 *mac_addr = NULL;
4169         struct key_parse key;
4170
4171         err = nl80211_parse_key(info, &key);
4172         if (err)
4173                 return err;
4174
4175         if (key.idx < 0)
4176                 return -EINVAL;
4177
4178         if (info->attrs[NL80211_ATTR_MAC])
4179                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4180
4181         if (key.type == -1) {
4182                 if (mac_addr)
4183                         key.type = NL80211_KEYTYPE_PAIRWISE;
4184                 else
4185                         key.type = NL80211_KEYTYPE_GROUP;
4186         }
4187
4188         /* for now */
4189         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4190             key.type != NL80211_KEYTYPE_GROUP)
4191                 return -EINVAL;
4192
4193         if (!rdev->ops->del_key)
4194                 return -EOPNOTSUPP;
4195
4196         wdev_lock(dev->ieee80211_ptr);
4197         err = nl80211_key_allowed(dev->ieee80211_ptr);
4198
4199         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4200             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4201                 err = -ENOENT;
4202
4203         if (!err)
4204                 err = rdev_del_key(rdev, dev, key.idx,
4205                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4206                                    mac_addr);
4207
4208 #ifdef CONFIG_CFG80211_WEXT
4209         if (!err) {
4210                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4211                         dev->ieee80211_ptr->wext.default_key = -1;
4212                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4213                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4214         }
4215 #endif
4216         wdev_unlock(dev->ieee80211_ptr);
4217
4218         return err;
4219 }
4220
4221 /* This function returns an error or the number of nested attributes */
4222 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4223 {
4224         struct nlattr *attr;
4225         int n_entries = 0, tmp;
4226
4227         nla_for_each_nested(attr, nl_attr, tmp) {
4228                 if (nla_len(attr) != ETH_ALEN)
4229                         return -EINVAL;
4230
4231                 n_entries++;
4232         }
4233
4234         return n_entries;
4235 }
4236
4237 /*
4238  * This function parses ACL information and allocates memory for ACL data.
4239  * On successful return, the calling function is responsible to free the
4240  * ACL buffer returned by this function.
4241  */
4242 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4243                                                 struct genl_info *info)
4244 {
4245         enum nl80211_acl_policy acl_policy;
4246         struct nlattr *attr;
4247         struct cfg80211_acl_data *acl;
4248         int i = 0, n_entries, tmp;
4249
4250         if (!wiphy->max_acl_mac_addrs)
4251                 return ERR_PTR(-EOPNOTSUPP);
4252
4253         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4254                 return ERR_PTR(-EINVAL);
4255
4256         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4257         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4258             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4259                 return ERR_PTR(-EINVAL);
4260
4261         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4262                 return ERR_PTR(-EINVAL);
4263
4264         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4265         if (n_entries < 0)
4266                 return ERR_PTR(n_entries);
4267
4268         if (n_entries > wiphy->max_acl_mac_addrs)
4269                 return ERR_PTR(-ENOTSUPP);
4270
4271         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4272         if (!acl)
4273                 return ERR_PTR(-ENOMEM);
4274
4275         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4276                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4277                 i++;
4278         }
4279
4280         acl->n_acl_entries = n_entries;
4281         acl->acl_policy = acl_policy;
4282
4283         return acl;
4284 }
4285
4286 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4287 {
4288         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4289         struct net_device *dev = info->user_ptr[1];
4290         struct cfg80211_acl_data *acl;
4291         int err;
4292
4293         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4294             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4295                 return -EOPNOTSUPP;
4296
4297         if (!dev->ieee80211_ptr->beacon_interval)
4298                 return -EINVAL;
4299
4300         acl = parse_acl_data(&rdev->wiphy, info);
4301         if (IS_ERR(acl))
4302                 return PTR_ERR(acl);
4303
4304         err = rdev_set_mac_acl(rdev, dev, acl);
4305
4306         kfree(acl);
4307
4308         return err;
4309 }
4310
4311 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4312                            u8 *rates, u8 rates_len)
4313 {
4314         u8 i;
4315         u32 mask = 0;
4316
4317         for (i = 0; i < rates_len; i++) {
4318                 int rate = (rates[i] & 0x7f) * 5;
4319                 int ridx;
4320
4321                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4322                         struct ieee80211_rate *srate =
4323                                 &sband->bitrates[ridx];
4324                         if (rate == srate->bitrate) {
4325                                 mask |= 1 << ridx;
4326                                 break;
4327                         }
4328                 }
4329                 if (ridx == sband->n_bitrates)
4330                         return 0; /* rate not found */
4331         }
4332
4333         return mask;
4334 }
4335
4336 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4337                                u8 *rates, u8 rates_len,
4338                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4339 {
4340         u8 i;
4341
4342         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4343
4344         for (i = 0; i < rates_len; i++) {
4345                 int ridx, rbit;
4346
4347                 ridx = rates[i] / 8;
4348                 rbit = BIT(rates[i] % 8);
4349
4350                 /* check validity */
4351                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4352                         return false;
4353
4354                 /* check availability */
4355                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4356                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4357                         mcs[ridx] |= rbit;
4358                 else
4359                         return false;
4360         }
4361
4362         return true;
4363 }
4364
4365 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4366 {
4367         u16 mcs_mask = 0;
4368
4369         switch (vht_mcs_map) {
4370         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4371                 break;
4372         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4373                 mcs_mask = 0x00FF;
4374                 break;
4375         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4376                 mcs_mask = 0x01FF;
4377                 break;
4378         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4379                 mcs_mask = 0x03FF;
4380                 break;
4381         default:
4382                 break;
4383         }
4384
4385         return mcs_mask;
4386 }
4387
4388 static void vht_build_mcs_mask(u16 vht_mcs_map,
4389                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4390 {
4391         u8 nss;
4392
4393         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4394                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4395                 vht_mcs_map >>= 2;
4396         }
4397 }
4398
4399 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4400                              struct nl80211_txrate_vht *txrate,
4401                              u16 mcs[NL80211_VHT_NSS_MAX])
4402 {
4403         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4404         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4405         u8 i;
4406
4407         if (!sband->vht_cap.vht_supported)
4408                 return false;
4409
4410         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4411
4412         /* Build vht_mcs_mask from VHT capabilities */
4413         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4414
4415         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4416                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4417                         mcs[i] = txrate->mcs[i];
4418                 else
4419                         return false;
4420         }
4421
4422         return true;
4423 }
4424
4425 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4426                                          struct nlattr *attrs[],
4427                                          enum nl80211_attrs attr,
4428                                          struct cfg80211_bitrate_mask *mask)
4429 {
4430         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4431         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4432         int rem, i;
4433         struct nlattr *tx_rates;
4434         struct ieee80211_supported_band *sband;
4435         u16 vht_tx_mcs_map;
4436
4437         memset(mask, 0, sizeof(*mask));
4438         /* Default to all rates enabled */
4439         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4440                 sband = rdev->wiphy.bands[i];
4441
4442                 if (!sband)
4443                         continue;
4444
4445                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4446                 memcpy(mask->control[i].ht_mcs,
4447                        sband->ht_cap.mcs.rx_mask,
4448                        sizeof(mask->control[i].ht_mcs));
4449
4450                 if (!sband->vht_cap.vht_supported)
4451                         continue;
4452
4453                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4454                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4455         }
4456
4457         /* if no rates are given set it back to the defaults */
4458         if (!attrs[attr])
4459                 goto out;
4460
4461         /* The nested attribute uses enum nl80211_band as the index. This maps
4462          * directly to the enum nl80211_band values used in cfg80211.
4463          */
4464         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4465         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4466                 enum nl80211_band band = nla_type(tx_rates);
4467                 int err;
4468
4469                 if (band < 0 || band >= NUM_NL80211_BANDS)
4470                         return -EINVAL;
4471                 sband = rdev->wiphy.bands[band];
4472                 if (sband == NULL)
4473                         return -EINVAL;
4474                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4475                                                   tx_rates,
4476                                                   nl80211_txattr_policy,
4477                                                   info->extack);
4478                 if (err)
4479                         return err;
4480                 if (tb[NL80211_TXRATE_LEGACY]) {
4481                         mask->control[band].legacy = rateset_to_mask(
4482                                 sband,
4483                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4484                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4485                         if ((mask->control[band].legacy == 0) &&
4486                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4487                                 return -EINVAL;
4488                 }
4489                 if (tb[NL80211_TXRATE_HT]) {
4490                         if (!ht_rateset_to_mask(
4491                                         sband,
4492                                         nla_data(tb[NL80211_TXRATE_HT]),
4493                                         nla_len(tb[NL80211_TXRATE_HT]),
4494                                         mask->control[band].ht_mcs))
4495                                 return -EINVAL;
4496                 }
4497                 if (tb[NL80211_TXRATE_VHT]) {
4498                         if (!vht_set_mcs_mask(
4499                                         sband,
4500                                         nla_data(tb[NL80211_TXRATE_VHT]),
4501                                         mask->control[band].vht_mcs))
4502                                 return -EINVAL;
4503                 }
4504                 if (tb[NL80211_TXRATE_GI]) {
4505                         mask->control[band].gi =
4506                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4507                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4508                                 return -EINVAL;
4509                 }
4510
4511                 if (mask->control[band].legacy == 0) {
4512                         /* don't allow empty legacy rates if HT or VHT
4513                          * are not even supported.
4514                          */
4515                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4516                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4517                                 return -EINVAL;
4518
4519                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4520                                 if (mask->control[band].ht_mcs[i])
4521                                         goto out;
4522
4523                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4524                                 if (mask->control[band].vht_mcs[i])
4525                                         goto out;
4526
4527                         /* legacy and mcs rates may not be both empty */
4528                         return -EINVAL;
4529                 }
4530         }
4531
4532 out:
4533         return 0;
4534 }
4535
4536 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4537                                    enum nl80211_band band,
4538                                    struct cfg80211_bitrate_mask *beacon_rate)
4539 {
4540         u32 count_ht, count_vht, i;
4541         u32 rate = beacon_rate->control[band].legacy;
4542
4543         /* Allow only one rate */
4544         if (hweight32(rate) > 1)
4545                 return -EINVAL;
4546
4547         count_ht = 0;
4548         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4549                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4550                         return -EINVAL;
4551                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4552                         count_ht++;
4553                         if (count_ht > 1)
4554                                 return -EINVAL;
4555                 }
4556                 if (count_ht && rate)
4557                         return -EINVAL;
4558         }
4559
4560         count_vht = 0;
4561         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4562                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4563                         return -EINVAL;
4564                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4565                         count_vht++;
4566                         if (count_vht > 1)
4567                                 return -EINVAL;
4568                 }
4569                 if (count_vht && rate)
4570                         return -EINVAL;
4571         }
4572
4573         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4574                 return -EINVAL;
4575
4576         if (rate &&
4577             !wiphy_ext_feature_isset(&rdev->wiphy,
4578                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4579                 return -EINVAL;
4580         if (count_ht &&
4581             !wiphy_ext_feature_isset(&rdev->wiphy,
4582                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4583                 return -EINVAL;
4584         if (count_vht &&
4585             !wiphy_ext_feature_isset(&rdev->wiphy,
4586                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4587                 return -EINVAL;
4588
4589         return 0;
4590 }
4591
4592 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4593                                 struct nlattr *attrs[],
4594                                 struct cfg80211_beacon_data *bcn)
4595 {
4596         bool haveinfo = false;
4597         int err;
4598
4599         memset(bcn, 0, sizeof(*bcn));
4600
4601         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4602                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4603                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4604                 if (!bcn->head_len)
4605                         return -EINVAL;
4606                 haveinfo = true;
4607         }
4608
4609         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4610                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4611                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4612                 haveinfo = true;
4613         }
4614
4615         if (!haveinfo)
4616                 return -EINVAL;
4617
4618         if (attrs[NL80211_ATTR_IE]) {
4619                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4620                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4621         }
4622
4623         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4624                 bcn->proberesp_ies =
4625                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4626                 bcn->proberesp_ies_len =
4627                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4628         }
4629
4630         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4631                 bcn->assocresp_ies =
4632                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4633                 bcn->assocresp_ies_len =
4634                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4635         }
4636
4637         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4638                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4639                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4640         }
4641
4642         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4643                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4644
4645                 err = nla_parse_nested_deprecated(tb,
4646                                                   NL80211_FTM_RESP_ATTR_MAX,
4647                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4648                                                   NULL, NULL);
4649                 if (err)
4650                         return err;
4651
4652                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4653                     wiphy_ext_feature_isset(&rdev->wiphy,
4654                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4655                         bcn->ftm_responder = 1;
4656                 else
4657                         return -EOPNOTSUPP;
4658
4659                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4660                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4661                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4662                 }
4663
4664                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4665                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4666                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4667                 }
4668         } else {
4669                 bcn->ftm_responder = -1;
4670         }
4671
4672         return 0;
4673 }
4674
4675 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4676                                     struct ieee80211_he_obss_pd *he_obss_pd)
4677 {
4678         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4679         int err;
4680
4681         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4682                                he_obss_pd_policy, NULL);
4683         if (err)
4684                 return err;
4685
4686         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4687             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4688                 return -EINVAL;
4689
4690         he_obss_pd->min_offset =
4691                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4692         he_obss_pd->max_offset =
4693                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4694
4695         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4696                 return -EINVAL;
4697
4698         he_obss_pd->enable = true;
4699
4700         return 0;
4701 }
4702
4703 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4704                                       struct cfg80211_he_bss_color *he_bss_color)
4705 {
4706         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4707         int err;
4708
4709         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4710                                he_bss_color_policy, NULL);
4711         if (err)
4712                 return err;
4713
4714         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4715                 return -EINVAL;
4716
4717         he_bss_color->color =
4718                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4719         he_bss_color->enabled =
4720                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4721         he_bss_color->partial =
4722                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4723
4724         return 0;
4725 }
4726
4727 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4728                                             const u8 *rates)
4729 {
4730         int i;
4731
4732         if (!rates)
4733                 return;
4734
4735         for (i = 0; i < rates[1]; i++) {
4736                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4737                         params->ht_required = true;
4738                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4739                         params->vht_required = true;
4740                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
4741                         params->he_required = true;
4742         }
4743 }
4744
4745 /*
4746  * Since the nl80211 API didn't include, from the beginning, attributes about
4747  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4748  * benefit of drivers that rebuild IEs in the firmware.
4749  */
4750 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4751 {
4752         const struct cfg80211_beacon_data *bcn = &params->beacon;
4753         size_t ies_len = bcn->tail_len;
4754         const u8 *ies = bcn->tail;
4755         const u8 *rates;
4756         const u8 *cap;
4757
4758         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4759         nl80211_check_ap_rate_selectors(params, rates);
4760
4761         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4762         nl80211_check_ap_rate_selectors(params, rates);
4763
4764         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4765         if (cap && cap[1] >= sizeof(*params->ht_cap))
4766                 params->ht_cap = (void *)(cap + 2);
4767         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4768         if (cap && cap[1] >= sizeof(*params->vht_cap))
4769                 params->vht_cap = (void *)(cap + 2);
4770         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4771         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4772                 params->he_cap = (void *)(cap + 3);
4773         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
4774         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
4775                 params->he_oper = (void *)(cap + 3);
4776 }
4777
4778 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4779                                    struct cfg80211_ap_settings *params)
4780 {
4781         struct wireless_dev *wdev;
4782         bool ret = false;
4783
4784         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4785                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4786                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4787                         continue;
4788
4789                 if (!wdev->preset_chandef.chan)
4790                         continue;
4791
4792                 params->chandef = wdev->preset_chandef;
4793                 ret = true;
4794                 break;
4795         }
4796
4797         return ret;
4798 }
4799
4800 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4801                                     enum nl80211_auth_type auth_type,
4802                                     enum nl80211_commands cmd)
4803 {
4804         if (auth_type > NL80211_AUTHTYPE_MAX)
4805                 return false;
4806
4807         switch (cmd) {
4808         case NL80211_CMD_AUTHENTICATE:
4809                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4810                     auth_type == NL80211_AUTHTYPE_SAE)
4811                         return false;
4812                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4813                                              NL80211_EXT_FEATURE_FILS_STA) &&
4814                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4815                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4816                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4817                         return false;
4818                 return true;
4819         case NL80211_CMD_CONNECT:
4820                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4821                     !wiphy_ext_feature_isset(&rdev->wiphy,
4822                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4823                     auth_type == NL80211_AUTHTYPE_SAE)
4824                         return false;
4825
4826                 /* FILS with SK PFS or PK not supported yet */
4827                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4828                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4829                         return false;
4830                 if (!wiphy_ext_feature_isset(
4831                             &rdev->wiphy,
4832                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4833                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4834                         return false;
4835                 return true;
4836         case NL80211_CMD_START_AP:
4837                 /* SAE not supported yet */
4838                 if (auth_type == NL80211_AUTHTYPE_SAE)
4839                         return false;
4840                 /* FILS not supported yet */
4841                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4842                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4843                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4844                         return false;
4845                 return true;
4846         default:
4847                 return false;
4848         }
4849 }
4850
4851 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4852 {
4853         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4854         struct net_device *dev = info->user_ptr[1];
4855         struct wireless_dev *wdev = dev->ieee80211_ptr;
4856         struct cfg80211_ap_settings params;
4857         int err;
4858
4859         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4860             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4861                 return -EOPNOTSUPP;
4862
4863         if (!rdev->ops->start_ap)
4864                 return -EOPNOTSUPP;
4865
4866         if (wdev->beacon_interval)
4867                 return -EALREADY;
4868
4869         memset(&params, 0, sizeof(params));
4870
4871         /* these are required for START_AP */
4872         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4873             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4874             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4875                 return -EINVAL;
4876
4877         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4878         if (err)
4879                 return err;
4880
4881         params.beacon_interval =
4882                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4883         params.dtim_period =
4884                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4885
4886         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4887                                            params.beacon_interval);
4888         if (err)
4889                 return err;
4890
4891         /*
4892          * In theory, some of these attributes should be required here
4893          * but since they were not used when the command was originally
4894          * added, keep them optional for old user space programs to let
4895          * them continue to work with drivers that do not need the
4896          * additional information -- drivers must check!
4897          */
4898         if (info->attrs[NL80211_ATTR_SSID]) {
4899                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4900                 params.ssid_len =
4901                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4902                 if (params.ssid_len == 0 ||
4903                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4904                         return -EINVAL;
4905         }
4906
4907         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4908                 params.hidden_ssid = nla_get_u32(
4909                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4910
4911         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4912
4913         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4914                 params.auth_type = nla_get_u32(
4915                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4916                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4917                                              NL80211_CMD_START_AP))
4918                         return -EINVAL;
4919         } else
4920                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4921
4922         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4923                                       NL80211_MAX_NR_CIPHER_SUITES);
4924         if (err)
4925                 return err;
4926
4927         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4928                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4929                         return -EOPNOTSUPP;
4930                 params.inactivity_timeout = nla_get_u16(
4931                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4932         }
4933
4934         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4935                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4936                         return -EINVAL;
4937                 params.p2p_ctwindow =
4938                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4939                 if (params.p2p_ctwindow != 0 &&
4940                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4941                         return -EINVAL;
4942         }
4943
4944         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4945                 u8 tmp;
4946
4947                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4948                         return -EINVAL;
4949                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4950                 params.p2p_opp_ps = tmp;
4951                 if (params.p2p_opp_ps != 0 &&
4952                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4953                         return -EINVAL;
4954         }
4955
4956         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4957                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4958                 if (err)
4959                         return err;
4960         } else if (wdev->preset_chandef.chan) {
4961                 params.chandef = wdev->preset_chandef;
4962         } else if (!nl80211_get_ap_channel(rdev, &params))
4963                 return -EINVAL;
4964
4965         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4966                                            wdev->iftype))
4967                 return -EINVAL;
4968
4969         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4970                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
4971                                                     NL80211_ATTR_TX_RATES,
4972                                                     &params.beacon_rate);
4973                 if (err)
4974                         return err;
4975
4976                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4977                                               &params.beacon_rate);
4978                 if (err)
4979                         return err;
4980         }
4981
4982         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4983                 params.smps_mode =
4984                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4985                 switch (params.smps_mode) {
4986                 case NL80211_SMPS_OFF:
4987                         break;
4988                 case NL80211_SMPS_STATIC:
4989                         if (!(rdev->wiphy.features &
4990                               NL80211_FEATURE_STATIC_SMPS))
4991                                 return -EINVAL;
4992                         break;
4993                 case NL80211_SMPS_DYNAMIC:
4994                         if (!(rdev->wiphy.features &
4995                               NL80211_FEATURE_DYNAMIC_SMPS))
4996                                 return -EINVAL;
4997                         break;
4998                 default:
4999                         return -EINVAL;
5000                 }
5001         } else {
5002                 params.smps_mode = NL80211_SMPS_OFF;
5003         }
5004
5005         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5006         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5007                 return -EOPNOTSUPP;
5008
5009         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5010                 params.acl = parse_acl_data(&rdev->wiphy, info);
5011                 if (IS_ERR(params.acl))
5012                         return PTR_ERR(params.acl);
5013         }
5014
5015         params.twt_responder =
5016                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5017
5018         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5019                 err = nl80211_parse_he_obss_pd(
5020                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5021                                         &params.he_obss_pd);
5022                 if (err)
5023                         goto out;
5024         }
5025
5026         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5027                 err = nl80211_parse_he_bss_color(
5028                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5029                                         &params.he_bss_color);
5030                 if (err)
5031                         goto out;
5032         }
5033
5034         nl80211_calculate_ap_params(&params);
5035
5036         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5037                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5038
5039         wdev_lock(wdev);
5040         err = rdev_start_ap(rdev, dev, &params);
5041         if (!err) {
5042                 wdev->preset_chandef = params.chandef;
5043                 wdev->beacon_interval = params.beacon_interval;
5044                 wdev->chandef = params.chandef;
5045                 wdev->ssid_len = params.ssid_len;
5046                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5047
5048                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5049                         wdev->conn_owner_nlportid = info->snd_portid;
5050         }
5051         wdev_unlock(wdev);
5052
5053 out:
5054         kfree(params.acl);
5055
5056         return err;
5057 }
5058
5059 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5060 {
5061         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5062         struct net_device *dev = info->user_ptr[1];
5063         struct wireless_dev *wdev = dev->ieee80211_ptr;
5064         struct cfg80211_beacon_data params;
5065         int err;
5066
5067         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5068             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5069                 return -EOPNOTSUPP;
5070
5071         if (!rdev->ops->change_beacon)
5072                 return -EOPNOTSUPP;
5073
5074         if (!wdev->beacon_interval)
5075                 return -EINVAL;
5076
5077         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5078         if (err)
5079                 return err;
5080
5081         wdev_lock(wdev);
5082         err = rdev_change_beacon(rdev, dev, &params);
5083         wdev_unlock(wdev);
5084
5085         return err;
5086 }
5087
5088 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5089 {
5090         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5091         struct net_device *dev = info->user_ptr[1];
5092
5093         return cfg80211_stop_ap(rdev, dev, false);
5094 }
5095
5096 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5097         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5098         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5099         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5100         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5101         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5102         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5103 };
5104
5105 static int parse_station_flags(struct genl_info *info,
5106                                enum nl80211_iftype iftype,
5107                                struct station_parameters *params)
5108 {
5109         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5110         struct nlattr *nla;
5111         int flag;
5112
5113         /*
5114          * Try parsing the new attribute first so userspace
5115          * can specify both for older kernels.
5116          */
5117         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5118         if (nla) {
5119                 struct nl80211_sta_flag_update *sta_flags;
5120
5121                 sta_flags = nla_data(nla);
5122                 params->sta_flags_mask = sta_flags->mask;
5123                 params->sta_flags_set = sta_flags->set;
5124                 params->sta_flags_set &= params->sta_flags_mask;
5125                 if ((params->sta_flags_mask |
5126                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5127                         return -EINVAL;
5128                 return 0;
5129         }
5130
5131         /* if present, parse the old attribute */
5132
5133         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5134         if (!nla)
5135                 return 0;
5136
5137         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5138                 return -EINVAL;
5139
5140         /*
5141          * Only allow certain flags for interface types so that
5142          * other attributes are silently ignored. Remember that
5143          * this is backward compatibility code with old userspace
5144          * and shouldn't be hit in other cases anyway.
5145          */
5146         switch (iftype) {
5147         case NL80211_IFTYPE_AP:
5148         case NL80211_IFTYPE_AP_VLAN:
5149         case NL80211_IFTYPE_P2P_GO:
5150                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5151                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5152                                          BIT(NL80211_STA_FLAG_WME) |
5153                                          BIT(NL80211_STA_FLAG_MFP);
5154                 break;
5155         case NL80211_IFTYPE_P2P_CLIENT:
5156         case NL80211_IFTYPE_STATION:
5157                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5158                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5159                 break;
5160         case NL80211_IFTYPE_MESH_POINT:
5161                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5162                                          BIT(NL80211_STA_FLAG_MFP) |
5163                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5164                 break;
5165         default:
5166                 return -EINVAL;
5167         }
5168
5169         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5170                 if (flags[flag]) {
5171                         params->sta_flags_set |= (1<<flag);
5172
5173                         /* no longer support new API additions in old API */
5174                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5175                                 return -EINVAL;
5176                 }
5177         }
5178
5179         return 0;
5180 }
5181
5182 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5183 {
5184         struct nlattr *rate;
5185         u32 bitrate;
5186         u16 bitrate_compat;
5187         enum nl80211_rate_info rate_flg;
5188
5189         rate = nla_nest_start_noflag(msg, attr);
5190         if (!rate)
5191                 return false;
5192
5193         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5194         bitrate = cfg80211_calculate_bitrate(info);
5195         /* report 16-bit bitrate only if we can */
5196         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5197         if (bitrate > 0 &&
5198             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5199                 return false;
5200         if (bitrate_compat > 0 &&
5201             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5202                 return false;
5203
5204         switch (info->bw) {
5205         case RATE_INFO_BW_5:
5206                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5207                 break;
5208         case RATE_INFO_BW_10:
5209                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5210                 break;
5211         default:
5212                 WARN_ON(1);
5213                 fallthrough;
5214         case RATE_INFO_BW_20:
5215                 rate_flg = 0;
5216                 break;
5217         case RATE_INFO_BW_40:
5218                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5219                 break;
5220         case RATE_INFO_BW_80:
5221                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5222                 break;
5223         case RATE_INFO_BW_160:
5224                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5225                 break;
5226         case RATE_INFO_BW_HE_RU:
5227                 rate_flg = 0;
5228                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5229         }
5230
5231         if (rate_flg && nla_put_flag(msg, rate_flg))
5232                 return false;
5233
5234         if (info->flags & RATE_INFO_FLAGS_MCS) {
5235                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5236                         return false;
5237                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5238                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5239                         return false;
5240         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5241                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5242                         return false;
5243                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5244                         return false;
5245                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5246                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5247                         return false;
5248         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5249                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5250                         return false;
5251                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5252                         return false;
5253                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5254                         return false;
5255                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5256                         return false;
5257                 if (info->bw == RATE_INFO_BW_HE_RU &&
5258                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5259                                info->he_ru_alloc))
5260                         return false;
5261         }
5262
5263         nla_nest_end(msg, rate);
5264         return true;
5265 }
5266
5267 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5268                                int id)
5269 {
5270         void *attr;
5271         int i = 0;
5272
5273         if (!mask)
5274                 return true;
5275
5276         attr = nla_nest_start_noflag(msg, id);
5277         if (!attr)
5278                 return false;
5279
5280         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5281                 if (!(mask & BIT(i)))
5282                         continue;
5283
5284                 if (nla_put_u8(msg, i, signal[i]))
5285                         return false;
5286         }
5287
5288         nla_nest_end(msg, attr);
5289
5290         return true;
5291 }
5292
5293 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5294                                 u32 seq, int flags,
5295                                 struct cfg80211_registered_device *rdev,
5296                                 struct net_device *dev,
5297                                 const u8 *mac_addr, struct station_info *sinfo)
5298 {
5299         void *hdr;
5300         struct nlattr *sinfoattr, *bss_param;
5301
5302         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5303         if (!hdr) {
5304                 cfg80211_sinfo_release_content(sinfo);
5305                 return -1;
5306         }
5307
5308         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5309             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5310             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5311                 goto nla_put_failure;
5312
5313         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5314         if (!sinfoattr)
5315                 goto nla_put_failure;
5316
5317 #define PUT_SINFO(attr, memb, type) do {                                \
5318         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5319         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5320             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5321                              sinfo->memb))                              \
5322                 goto nla_put_failure;                                   \
5323         } while (0)
5324 #define PUT_SINFO_U64(attr, memb) do {                                  \
5325         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5326             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5327                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5328                 goto nla_put_failure;                                   \
5329         } while (0)
5330
5331         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5332         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5333         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5334
5335         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5336                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5337             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5338                         (u32)sinfo->rx_bytes))
5339                 goto nla_put_failure;
5340
5341         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5342                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5343             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5344                         (u32)sinfo->tx_bytes))
5345                 goto nla_put_failure;
5346
5347         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5348         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5349         PUT_SINFO(LLID, llid, u16);
5350         PUT_SINFO(PLID, plid, u16);
5351         PUT_SINFO(PLINK_STATE, plink_state, u8);
5352         PUT_SINFO_U64(RX_DURATION, rx_duration);
5353         PUT_SINFO_U64(TX_DURATION, tx_duration);
5354
5355         if (wiphy_ext_feature_isset(&rdev->wiphy,
5356                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5357                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5358
5359         switch (rdev->wiphy.signal_type) {
5360         case CFG80211_SIGNAL_TYPE_MBM:
5361                 PUT_SINFO(SIGNAL, signal, u8);
5362                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5363                 break;
5364         default:
5365                 break;
5366         }
5367         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5368                 if (!nl80211_put_signal(msg, sinfo->chains,
5369                                         sinfo->chain_signal,
5370                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5371                         goto nla_put_failure;
5372         }
5373         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5374                 if (!nl80211_put_signal(msg, sinfo->chains,
5375                                         sinfo->chain_signal_avg,
5376                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5377                         goto nla_put_failure;
5378         }
5379         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5380                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5381                                           NL80211_STA_INFO_TX_BITRATE))
5382                         goto nla_put_failure;
5383         }
5384         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5385                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5386                                           NL80211_STA_INFO_RX_BITRATE))
5387                         goto nla_put_failure;
5388         }
5389
5390         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5391         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5392         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5393         PUT_SINFO(TX_FAILED, tx_failed, u32);
5394         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5395         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5396         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5397         PUT_SINFO(LOCAL_PM, local_pm, u32);
5398         PUT_SINFO(PEER_PM, peer_pm, u32);
5399         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5400         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5401         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5402
5403         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5404                 bss_param = nla_nest_start_noflag(msg,
5405                                                   NL80211_STA_INFO_BSS_PARAM);
5406                 if (!bss_param)
5407                         goto nla_put_failure;
5408
5409                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5410                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5411                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5412                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5413                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5414                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5415                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5416                                sinfo->bss_param.dtim_period) ||
5417                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5418                                 sinfo->bss_param.beacon_interval))
5419                         goto nla_put_failure;
5420
5421                 nla_nest_end(msg, bss_param);
5422         }
5423         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5424             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5425                     sizeof(struct nl80211_sta_flag_update),
5426                     &sinfo->sta_flags))
5427                 goto nla_put_failure;
5428
5429         PUT_SINFO_U64(T_OFFSET, t_offset);
5430         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5431         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5432         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5433         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5434         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5435         if (wiphy_ext_feature_isset(&rdev->wiphy,
5436                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5437                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5438                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5439         }
5440
5441 #undef PUT_SINFO
5442 #undef PUT_SINFO_U64
5443
5444         if (sinfo->pertid) {
5445                 struct nlattr *tidsattr;
5446                 int tid;
5447
5448                 tidsattr = nla_nest_start_noflag(msg,
5449                                                  NL80211_STA_INFO_TID_STATS);
5450                 if (!tidsattr)
5451                         goto nla_put_failure;
5452
5453                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5454                         struct cfg80211_tid_stats *tidstats;
5455                         struct nlattr *tidattr;
5456
5457                         tidstats = &sinfo->pertid[tid];
5458
5459                         if (!tidstats->filled)
5460                                 continue;
5461
5462                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5463                         if (!tidattr)
5464                                 goto nla_put_failure;
5465
5466 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5467         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5468             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5469                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5470                 goto nla_put_failure;                                   \
5471         } while (0)
5472
5473                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5474                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5475                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5476                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5477
5478 #undef PUT_TIDVAL_U64
5479                         if ((tidstats->filled &
5480                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5481                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5482                                                    NL80211_TID_STATS_TXQ_STATS))
5483                                 goto nla_put_failure;
5484
5485                         nla_nest_end(msg, tidattr);
5486                 }
5487
5488                 nla_nest_end(msg, tidsattr);
5489         }
5490
5491         nla_nest_end(msg, sinfoattr);
5492
5493         if (sinfo->assoc_req_ies_len &&
5494             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5495                     sinfo->assoc_req_ies))
5496                 goto nla_put_failure;
5497
5498         cfg80211_sinfo_release_content(sinfo);
5499         genlmsg_end(msg, hdr);
5500         return 0;
5501
5502  nla_put_failure:
5503         cfg80211_sinfo_release_content(sinfo);
5504         genlmsg_cancel(msg, hdr);
5505         return -EMSGSIZE;
5506 }
5507
5508 static int nl80211_dump_station(struct sk_buff *skb,
5509                                 struct netlink_callback *cb)
5510 {
5511         struct station_info sinfo;
5512         struct cfg80211_registered_device *rdev;
5513         struct wireless_dev *wdev;
5514         u8 mac_addr[ETH_ALEN];
5515         int sta_idx = cb->args[2];
5516         int err;
5517
5518         rtnl_lock();
5519         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5520         if (err)
5521                 goto out_err;
5522
5523         if (!wdev->netdev) {
5524                 err = -EINVAL;
5525                 goto out_err;
5526         }
5527
5528         if (!rdev->ops->dump_station) {
5529                 err = -EOPNOTSUPP;
5530                 goto out_err;
5531         }
5532
5533         while (1) {
5534                 memset(&sinfo, 0, sizeof(sinfo));
5535                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5536                                         mac_addr, &sinfo);
5537                 if (err == -ENOENT)
5538                         break;
5539                 if (err)
5540                         goto out_err;
5541
5542                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5543                                 NETLINK_CB(cb->skb).portid,
5544                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5545                                 rdev, wdev->netdev, mac_addr,
5546                                 &sinfo) < 0)
5547                         goto out;
5548
5549                 sta_idx++;
5550         }
5551
5552  out:
5553         cb->args[2] = sta_idx;
5554         err = skb->len;
5555  out_err:
5556         rtnl_unlock();
5557
5558         return err;
5559 }
5560
5561 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5562 {
5563         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5564         struct net_device *dev = info->user_ptr[1];
5565         struct station_info sinfo;
5566         struct sk_buff *msg;
5567         u8 *mac_addr = NULL;
5568         int err;
5569
5570         memset(&sinfo, 0, sizeof(sinfo));
5571
5572         if (!info->attrs[NL80211_ATTR_MAC])
5573                 return -EINVAL;
5574
5575         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5576
5577         if (!rdev->ops->get_station)
5578                 return -EOPNOTSUPP;
5579
5580         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5581         if (err)
5582                 return err;
5583
5584         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5585         if (!msg) {
5586                 cfg80211_sinfo_release_content(&sinfo);
5587                 return -ENOMEM;
5588         }
5589
5590         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5591                                  info->snd_portid, info->snd_seq, 0,
5592                                  rdev, dev, mac_addr, &sinfo) < 0) {
5593                 nlmsg_free(msg);
5594                 return -ENOBUFS;
5595         }
5596
5597         return genlmsg_reply(msg, info);
5598 }
5599
5600 int cfg80211_check_station_change(struct wiphy *wiphy,
5601                                   struct station_parameters *params,
5602                                   enum cfg80211_station_type statype)
5603 {
5604         if (params->listen_interval != -1 &&
5605             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5606                 return -EINVAL;
5607
5608         if (params->support_p2p_ps != -1 &&
5609             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5610                 return -EINVAL;
5611
5612         if (params->aid &&
5613             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5614             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5615                 return -EINVAL;
5616
5617         /* When you run into this, adjust the code below for the new flag */
5618         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5619
5620         switch (statype) {
5621         case CFG80211_STA_MESH_PEER_KERNEL:
5622         case CFG80211_STA_MESH_PEER_USER:
5623                 /*
5624                  * No ignoring the TDLS flag here -- the userspace mesh
5625                  * code doesn't have the bug of including TDLS in the
5626                  * mask everywhere.
5627                  */
5628                 if (params->sta_flags_mask &
5629                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5630                                   BIT(NL80211_STA_FLAG_MFP) |
5631                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5632                         return -EINVAL;
5633                 break;
5634         case CFG80211_STA_TDLS_PEER_SETUP:
5635         case CFG80211_STA_TDLS_PEER_ACTIVE:
5636                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5637                         return -EINVAL;
5638                 /* ignore since it can't change */
5639                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5640                 break;
5641         default:
5642                 /* disallow mesh-specific things */
5643                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5644                         return -EINVAL;
5645                 if (params->local_pm)
5646                         return -EINVAL;
5647                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5648                         return -EINVAL;
5649         }
5650
5651         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5652             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5653                 /* TDLS can't be set, ... */
5654                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5655                         return -EINVAL;
5656                 /*
5657                  * ... but don't bother the driver with it. This works around
5658                  * a hostapd/wpa_supplicant issue -- it always includes the
5659                  * TLDS_PEER flag in the mask even for AP mode.
5660                  */
5661                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5662         }
5663
5664         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5665             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5666                 /* reject other things that can't change */
5667                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5668                         return -EINVAL;
5669                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5670                         return -EINVAL;
5671                 if (params->supported_rates)
5672                         return -EINVAL;
5673                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5674                     params->he_capa)
5675                         return -EINVAL;
5676         }
5677
5678         if (statype != CFG80211_STA_AP_CLIENT &&
5679             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5680                 if (params->vlan)
5681                         return -EINVAL;
5682         }
5683
5684         switch (statype) {
5685         case CFG80211_STA_AP_MLME_CLIENT:
5686                 /* Use this only for authorizing/unauthorizing a station */
5687                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5688                         return -EOPNOTSUPP;
5689                 break;
5690         case CFG80211_STA_AP_CLIENT:
5691         case CFG80211_STA_AP_CLIENT_UNASSOC:
5692                 /* accept only the listed bits */
5693                 if (params->sta_flags_mask &
5694                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5695                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5696                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5697                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5698                                   BIT(NL80211_STA_FLAG_WME) |
5699                                   BIT(NL80211_STA_FLAG_MFP)))
5700                         return -EINVAL;
5701
5702                 /* but authenticated/associated only if driver handles it */
5703                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5704                     params->sta_flags_mask &
5705                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5706                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5707                         return -EINVAL;
5708                 break;
5709         case CFG80211_STA_IBSS:
5710         case CFG80211_STA_AP_STA:
5711                 /* reject any changes other than AUTHORIZED */
5712                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5713                         return -EINVAL;
5714                 break;
5715         case CFG80211_STA_TDLS_PEER_SETUP:
5716                 /* reject any changes other than AUTHORIZED or WME */
5717                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5718                                                BIT(NL80211_STA_FLAG_WME)))
5719                         return -EINVAL;
5720                 /* force (at least) rates when authorizing */
5721                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5722                     !params->supported_rates)
5723                         return -EINVAL;
5724                 break;
5725         case CFG80211_STA_TDLS_PEER_ACTIVE:
5726                 /* reject any changes */
5727                 return -EINVAL;
5728         case CFG80211_STA_MESH_PEER_KERNEL:
5729                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5730                         return -EINVAL;
5731                 break;
5732         case CFG80211_STA_MESH_PEER_USER:
5733                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5734                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5735                         return -EINVAL;
5736                 break;
5737         }
5738
5739         /*
5740          * Older kernel versions ignored this attribute entirely, so don't
5741          * reject attempts to update it but mark it as unused instead so the
5742          * driver won't look at the data.
5743          */
5744         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5745             statype != CFG80211_STA_TDLS_PEER_SETUP)
5746                 params->opmode_notif_used = false;
5747
5748         return 0;
5749 }
5750 EXPORT_SYMBOL(cfg80211_check_station_change);
5751
5752 /*
5753  * Get vlan interface making sure it is running and on the right wiphy.
5754  */
5755 static struct net_device *get_vlan(struct genl_info *info,
5756                                    struct cfg80211_registered_device *rdev)
5757 {
5758         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5759         struct net_device *v;
5760         int ret;
5761
5762         if (!vlanattr)
5763                 return NULL;
5764
5765         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5766         if (!v)
5767                 return ERR_PTR(-ENODEV);
5768
5769         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5770                 ret = -EINVAL;
5771                 goto error;
5772         }
5773
5774         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5775             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5776             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5777                 ret = -EINVAL;
5778                 goto error;
5779         }
5780
5781         if (!netif_running(v)) {
5782                 ret = -ENETDOWN;
5783                 goto error;
5784         }
5785
5786         return v;
5787  error:
5788         dev_put(v);
5789         return ERR_PTR(ret);
5790 }
5791
5792 static const struct nla_policy
5793 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5794         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5795         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5796 };
5797
5798 static int nl80211_parse_sta_wme(struct genl_info *info,
5799                                  struct station_parameters *params)
5800 {
5801         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5802         struct nlattr *nla;
5803         int err;
5804
5805         /* parse WME attributes if present */
5806         if (!info->attrs[NL80211_ATTR_STA_WME])
5807                 return 0;
5808
5809         nla = info->attrs[NL80211_ATTR_STA_WME];
5810         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5811                                           nl80211_sta_wme_policy,
5812                                           info->extack);
5813         if (err)
5814                 return err;
5815
5816         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5817                 params->uapsd_queues = nla_get_u8(
5818                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5819         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5820                 return -EINVAL;
5821
5822         if (tb[NL80211_STA_WME_MAX_SP])
5823                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5824
5825         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5826                 return -EINVAL;
5827
5828         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5829
5830         return 0;
5831 }
5832
5833 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5834                                       struct station_parameters *params)
5835 {
5836         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5837                 params->supported_channels =
5838                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5839                 params->supported_channels_len =
5840                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5841                 /*
5842                  * Need to include at least one (first channel, number of
5843                  * channels) tuple for each subband, and must have proper
5844                  * tuples for the rest of the data as well.
5845                  */
5846                 if (params->supported_channels_len < 2)
5847                         return -EINVAL;
5848                 if (params->supported_channels_len % 2)
5849                         return -EINVAL;
5850         }
5851
5852         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5853                 params->supported_oper_classes =
5854                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5855                 params->supported_oper_classes_len =
5856                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5857                 /*
5858                  * The value of the Length field of the Supported Operating
5859                  * Classes element is between 2 and 253.
5860                  */
5861                 if (params->supported_oper_classes_len < 2 ||
5862                     params->supported_oper_classes_len > 253)
5863                         return -EINVAL;
5864         }
5865         return 0;
5866 }
5867
5868 static int nl80211_set_station_tdls(struct genl_info *info,
5869                                     struct station_parameters *params)
5870 {
5871         int err;
5872         /* Dummy STA entry gets updated once the peer capabilities are known */
5873         if (info->attrs[NL80211_ATTR_PEER_AID])
5874                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5875         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5876                 params->ht_capa =
5877                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5878         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5879                 params->vht_capa =
5880                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5881         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5882                 params->he_capa =
5883                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5884                 params->he_capa_len =
5885                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5886
5887                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5888                         return -EINVAL;
5889         }
5890
5891         err = nl80211_parse_sta_channel_info(info, params);
5892         if (err)
5893                 return err;
5894
5895         return nl80211_parse_sta_wme(info, params);
5896 }
5897
5898 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5899                                              struct station_parameters *params)
5900 {
5901         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5902         int idx;
5903
5904         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5905                 if (!rdev->ops->set_tx_power ||
5906                     !wiphy_ext_feature_isset(&rdev->wiphy,
5907                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5908                         return -EOPNOTSUPP;
5909
5910                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5911                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5912
5913                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5914                         idx = NL80211_ATTR_STA_TX_POWER;
5915
5916                         if (info->attrs[idx])
5917                                 params->txpwr.power =
5918                                         nla_get_s16(info->attrs[idx]);
5919                         else
5920                                 return -EINVAL;
5921                 }
5922                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5923         }
5924
5925         return 0;
5926 }
5927
5928 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5929 {
5930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5931         struct net_device *dev = info->user_ptr[1];
5932         struct station_parameters params;
5933         u8 *mac_addr;
5934         int err;
5935
5936         memset(&params, 0, sizeof(params));
5937
5938         if (!rdev->ops->change_station)
5939                 return -EOPNOTSUPP;
5940
5941         /*
5942          * AID and listen_interval properties can be set only for unassociated
5943          * station. Include these parameters here and will check them in
5944          * cfg80211_check_station_change().
5945          */
5946         if (info->attrs[NL80211_ATTR_STA_AID])
5947                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5948
5949         if (info->attrs[NL80211_ATTR_VLAN_ID])
5950                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5951
5952         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5953                 params.listen_interval =
5954                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5955         else
5956                 params.listen_interval = -1;
5957
5958         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5959                 params.support_p2p_ps =
5960                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5961         else
5962                 params.support_p2p_ps = -1;
5963
5964         if (!info->attrs[NL80211_ATTR_MAC])
5965                 return -EINVAL;
5966
5967         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5968
5969         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5970                 params.supported_rates =
5971                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5972                 params.supported_rates_len =
5973                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5974         }
5975
5976         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5977                 params.capability =
5978                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5979                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5980         }
5981
5982         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5983                 params.ext_capab =
5984                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5985                 params.ext_capab_len =
5986                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5987         }
5988
5989         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5990                 return -EINVAL;
5991
5992         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5993                 params.plink_action =
5994                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5995
5996         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5997                 params.plink_state =
5998                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5999                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6000                         params.peer_aid = nla_get_u16(
6001                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6002                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6003         }
6004
6005         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6006                 params.local_pm = nla_get_u32(
6007                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6008
6009         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6010                 params.opmode_notif_used = true;
6011                 params.opmode_notif =
6012                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6013         }
6014
6015         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6016                 params.he_6ghz_capa =
6017                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6018
6019         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6020                 params.airtime_weight =
6021                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6022
6023         if (params.airtime_weight &&
6024             !wiphy_ext_feature_isset(&rdev->wiphy,
6025                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6026                 return -EOPNOTSUPP;
6027
6028         err = nl80211_parse_sta_txpower_setting(info, &params);
6029         if (err)
6030                 return err;
6031
6032         /* Include parameters for TDLS peer (will check later) */
6033         err = nl80211_set_station_tdls(info, &params);
6034         if (err)
6035                 return err;
6036
6037         params.vlan = get_vlan(info, rdev);
6038         if (IS_ERR(params.vlan))
6039                 return PTR_ERR(params.vlan);
6040
6041         switch (dev->ieee80211_ptr->iftype) {
6042         case NL80211_IFTYPE_AP:
6043         case NL80211_IFTYPE_AP_VLAN:
6044         case NL80211_IFTYPE_P2P_GO:
6045         case NL80211_IFTYPE_P2P_CLIENT:
6046         case NL80211_IFTYPE_STATION:
6047         case NL80211_IFTYPE_ADHOC:
6048         case NL80211_IFTYPE_MESH_POINT:
6049                 break;
6050         default:
6051                 err = -EOPNOTSUPP;
6052                 goto out_put_vlan;
6053         }
6054
6055         /* driver will call cfg80211_check_station_change() */
6056         err = rdev_change_station(rdev, dev, mac_addr, &params);
6057
6058  out_put_vlan:
6059         if (params.vlan)
6060                 dev_put(params.vlan);
6061
6062         return err;
6063 }
6064
6065 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6066 {
6067         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6068         int err;
6069         struct net_device *dev = info->user_ptr[1];
6070         struct station_parameters params;
6071         u8 *mac_addr = NULL;
6072         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6073                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6074
6075         memset(&params, 0, sizeof(params));
6076
6077         if (!rdev->ops->add_station)
6078                 return -EOPNOTSUPP;
6079
6080         if (!info->attrs[NL80211_ATTR_MAC])
6081                 return -EINVAL;
6082
6083         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6084                 return -EINVAL;
6085
6086         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6087                 return -EINVAL;
6088
6089         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6090             !info->attrs[NL80211_ATTR_PEER_AID])
6091                 return -EINVAL;
6092
6093         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6094         params.supported_rates =
6095                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6096         params.supported_rates_len =
6097                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6098         params.listen_interval =
6099                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6100
6101         if (info->attrs[NL80211_ATTR_VLAN_ID])
6102                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6103
6104         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6105                 params.support_p2p_ps =
6106                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6107         } else {
6108                 /*
6109                  * if not specified, assume it's supported for P2P GO interface,
6110                  * and is NOT supported for AP interface
6111                  */
6112                 params.support_p2p_ps =
6113                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6114         }
6115
6116         if (info->attrs[NL80211_ATTR_PEER_AID])
6117                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6118         else
6119                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6120
6121         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6122                 params.capability =
6123                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6124                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6125         }
6126
6127         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6128                 params.ext_capab =
6129                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6130                 params.ext_capab_len =
6131                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6132         }
6133
6134         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6135                 params.ht_capa =
6136                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6137
6138         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6139                 params.vht_capa =
6140                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6141
6142         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6143                 params.he_capa =
6144                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6145                 params.he_capa_len =
6146                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6147
6148                 /* max len is validated in nla policy */
6149                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
6150                         return -EINVAL;
6151         }
6152
6153         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6154                 params.he_6ghz_capa =
6155                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6156
6157         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6158                 params.opmode_notif_used = true;
6159                 params.opmode_notif =
6160                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6161         }
6162
6163         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6164                 params.plink_action =
6165                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6166
6167         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6168                 params.airtime_weight =
6169                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6170
6171         if (params.airtime_weight &&
6172             !wiphy_ext_feature_isset(&rdev->wiphy,
6173                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6174                 return -EOPNOTSUPP;
6175
6176         err = nl80211_parse_sta_txpower_setting(info, &params);
6177         if (err)
6178                 return err;
6179
6180         err = nl80211_parse_sta_channel_info(info, &params);
6181         if (err)
6182                 return err;
6183
6184         err = nl80211_parse_sta_wme(info, &params);
6185         if (err)
6186                 return err;
6187
6188         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6189                 return -EINVAL;
6190
6191         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6192          * as userspace might just pass through the capabilities from the IEs
6193          * directly, rather than enforcing this restriction and returning an
6194          * error in this case.
6195          */
6196         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6197                 params.ht_capa = NULL;
6198                 params.vht_capa = NULL;
6199
6200                 /* HE requires WME */
6201                 if (params.he_capa_len || params.he_6ghz_capa)
6202                         return -EINVAL;
6203         }
6204
6205         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6206         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6207                 return -EINVAL;
6208
6209         /* When you run into this, adjust the code below for the new flag */
6210         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6211
6212         switch (dev->ieee80211_ptr->iftype) {
6213         case NL80211_IFTYPE_AP:
6214         case NL80211_IFTYPE_AP_VLAN:
6215         case NL80211_IFTYPE_P2P_GO:
6216                 /* ignore WME attributes if iface/sta is not capable */
6217                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6218                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6219                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6220
6221                 /* TDLS peers cannot be added */
6222                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6223                     info->attrs[NL80211_ATTR_PEER_AID])
6224                         return -EINVAL;
6225                 /* but don't bother the driver with it */
6226                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6227
6228                 /* allow authenticated/associated only if driver handles it */
6229                 if (!(rdev->wiphy.features &
6230                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6231                     params.sta_flags_mask & auth_assoc)
6232                         return -EINVAL;
6233
6234                 /* Older userspace, or userspace wanting to be compatible with
6235                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6236                  * and assoc flags in the mask, but assumes the station will be
6237                  * added as associated anyway since this was the required driver
6238                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6239                  * introduced.
6240                  * In order to not bother drivers with this quirk in the API
6241                  * set the flags in both the mask and set for new stations in
6242                  * this case.
6243                  */
6244                 if (!(params.sta_flags_mask & auth_assoc)) {
6245                         params.sta_flags_mask |= auth_assoc;
6246                         params.sta_flags_set |= auth_assoc;
6247                 }
6248
6249                 /* must be last in here for error handling */
6250                 params.vlan = get_vlan(info, rdev);
6251                 if (IS_ERR(params.vlan))
6252                         return PTR_ERR(params.vlan);
6253                 break;
6254         case NL80211_IFTYPE_MESH_POINT:
6255                 /* ignore uAPSD data */
6256                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6257
6258                 /* associated is disallowed */
6259                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6260                         return -EINVAL;
6261                 /* TDLS peers cannot be added */
6262                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6263                     info->attrs[NL80211_ATTR_PEER_AID])
6264                         return -EINVAL;
6265                 break;
6266         case NL80211_IFTYPE_STATION:
6267         case NL80211_IFTYPE_P2P_CLIENT:
6268                 /* ignore uAPSD data */
6269                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6270
6271                 /* these are disallowed */
6272                 if (params.sta_flags_mask &
6273                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6274                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6275                         return -EINVAL;
6276                 /* Only TDLS peers can be added */
6277                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6278                         return -EINVAL;
6279                 /* Can only add if TDLS ... */
6280                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6281                         return -EOPNOTSUPP;
6282                 /* ... with external setup is supported */
6283                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6284                         return -EOPNOTSUPP;
6285                 /*
6286                  * Older wpa_supplicant versions always mark the TDLS peer
6287                  * as authorized, but it shouldn't yet be.
6288                  */
6289                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6290                 break;
6291         default:
6292                 return -EOPNOTSUPP;
6293         }
6294
6295         /* be aware of params.vlan when changing code here */
6296
6297         err = rdev_add_station(rdev, dev, mac_addr, &params);
6298
6299         if (params.vlan)
6300                 dev_put(params.vlan);
6301         return err;
6302 }
6303
6304 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6305 {
6306         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6307         struct net_device *dev = info->user_ptr[1];
6308         struct station_del_parameters params;
6309
6310         memset(&params, 0, sizeof(params));
6311
6312         if (info->attrs[NL80211_ATTR_MAC])
6313                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6314
6315         switch (dev->ieee80211_ptr->iftype) {
6316         case NL80211_IFTYPE_AP:
6317         case NL80211_IFTYPE_AP_VLAN:
6318         case NL80211_IFTYPE_MESH_POINT:
6319         case NL80211_IFTYPE_P2P_GO:
6320                 /* always accept these */
6321                 break;
6322         case NL80211_IFTYPE_ADHOC:
6323                 /* conditionally accept */
6324                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6325                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6326                         break;
6327                 return -EINVAL;
6328         default:
6329                 return -EINVAL;
6330         }
6331
6332         if (!rdev->ops->del_station)
6333                 return -EOPNOTSUPP;
6334
6335         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6336                 params.subtype =
6337                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6338                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6339                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6340                         return -EINVAL;
6341         } else {
6342                 /* Default to Deauthentication frame */
6343                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6344         }
6345
6346         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6347                 params.reason_code =
6348                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6349                 if (params.reason_code == 0)
6350                         return -EINVAL; /* 0 is reserved */
6351         } else {
6352                 /* Default to reason code 2 */
6353                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6354         }
6355
6356         return rdev_del_station(rdev, dev, &params);
6357 }
6358
6359 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6360                                 int flags, struct net_device *dev,
6361                                 u8 *dst, u8 *next_hop,
6362                                 struct mpath_info *pinfo)
6363 {
6364         void *hdr;
6365         struct nlattr *pinfoattr;
6366
6367         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6368         if (!hdr)
6369                 return -1;
6370
6371         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6372             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6373             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6374             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6375                 goto nla_put_failure;
6376
6377         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6378         if (!pinfoattr)
6379                 goto nla_put_failure;
6380         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6381             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6382                         pinfo->frame_qlen))
6383                 goto nla_put_failure;
6384         if (((pinfo->filled & MPATH_INFO_SN) &&
6385              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6386             ((pinfo->filled & MPATH_INFO_METRIC) &&
6387              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6388                          pinfo->metric)) ||
6389             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6390              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6391                          pinfo->exptime)) ||
6392             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6393              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6394                         pinfo->flags)) ||
6395             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6396              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6397                          pinfo->discovery_timeout)) ||
6398             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6399              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6400                         pinfo->discovery_retries)) ||
6401             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6402              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6403                         pinfo->hop_count)) ||
6404             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6405              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6406                          pinfo->path_change_count)))
6407                 goto nla_put_failure;
6408
6409         nla_nest_end(msg, pinfoattr);
6410
6411         genlmsg_end(msg, hdr);
6412         return 0;
6413
6414  nla_put_failure:
6415         genlmsg_cancel(msg, hdr);
6416         return -EMSGSIZE;
6417 }
6418
6419 static int nl80211_dump_mpath(struct sk_buff *skb,
6420                               struct netlink_callback *cb)
6421 {
6422         struct mpath_info pinfo;
6423         struct cfg80211_registered_device *rdev;
6424         struct wireless_dev *wdev;
6425         u8 dst[ETH_ALEN];
6426         u8 next_hop[ETH_ALEN];
6427         int path_idx = cb->args[2];
6428         int err;
6429
6430         rtnl_lock();
6431         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6432         if (err)
6433                 goto out_err;
6434
6435         if (!rdev->ops->dump_mpath) {
6436                 err = -EOPNOTSUPP;
6437                 goto out_err;
6438         }
6439
6440         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6441                 err = -EOPNOTSUPP;
6442                 goto out_err;
6443         }
6444
6445         while (1) {
6446                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6447                                       next_hop, &pinfo);
6448                 if (err == -ENOENT)
6449                         break;
6450                 if (err)
6451                         goto out_err;
6452
6453                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6454                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6455                                        wdev->netdev, dst, next_hop,
6456                                        &pinfo) < 0)
6457                         goto out;
6458
6459                 path_idx++;
6460         }
6461
6462  out:
6463         cb->args[2] = path_idx;
6464         err = skb->len;
6465  out_err:
6466         rtnl_unlock();
6467         return err;
6468 }
6469
6470 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6471 {
6472         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6473         int err;
6474         struct net_device *dev = info->user_ptr[1];
6475         struct mpath_info pinfo;
6476         struct sk_buff *msg;
6477         u8 *dst = NULL;
6478         u8 next_hop[ETH_ALEN];
6479
6480         memset(&pinfo, 0, sizeof(pinfo));
6481
6482         if (!info->attrs[NL80211_ATTR_MAC])
6483                 return -EINVAL;
6484
6485         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6486
6487         if (!rdev->ops->get_mpath)
6488                 return -EOPNOTSUPP;
6489
6490         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6491                 return -EOPNOTSUPP;
6492
6493         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6494         if (err)
6495                 return err;
6496
6497         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6498         if (!msg)
6499                 return -ENOMEM;
6500
6501         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6502                                  dev, dst, next_hop, &pinfo) < 0) {
6503                 nlmsg_free(msg);
6504                 return -ENOBUFS;
6505         }
6506
6507         return genlmsg_reply(msg, info);
6508 }
6509
6510 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6511 {
6512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6513         struct net_device *dev = info->user_ptr[1];
6514         u8 *dst = NULL;
6515         u8 *next_hop = NULL;
6516
6517         if (!info->attrs[NL80211_ATTR_MAC])
6518                 return -EINVAL;
6519
6520         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6521                 return -EINVAL;
6522
6523         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6524         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6525
6526         if (!rdev->ops->change_mpath)
6527                 return -EOPNOTSUPP;
6528
6529         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6530                 return -EOPNOTSUPP;
6531
6532         return rdev_change_mpath(rdev, dev, dst, next_hop);
6533 }
6534
6535 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6536 {
6537         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6538         struct net_device *dev = info->user_ptr[1];
6539         u8 *dst = NULL;
6540         u8 *next_hop = NULL;
6541
6542         if (!info->attrs[NL80211_ATTR_MAC])
6543                 return -EINVAL;
6544
6545         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6546                 return -EINVAL;
6547
6548         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6549         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6550
6551         if (!rdev->ops->add_mpath)
6552                 return -EOPNOTSUPP;
6553
6554         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6555                 return -EOPNOTSUPP;
6556
6557         return rdev_add_mpath(rdev, dev, dst, next_hop);
6558 }
6559
6560 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6561 {
6562         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6563         struct net_device *dev = info->user_ptr[1];
6564         u8 *dst = NULL;
6565
6566         if (info->attrs[NL80211_ATTR_MAC])
6567                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6568
6569         if (!rdev->ops->del_mpath)
6570                 return -EOPNOTSUPP;
6571
6572         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6573                 return -EOPNOTSUPP;
6574
6575         return rdev_del_mpath(rdev, dev, dst);
6576 }
6577
6578 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6579 {
6580         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6581         int err;
6582         struct net_device *dev = info->user_ptr[1];
6583         struct mpath_info pinfo;
6584         struct sk_buff *msg;
6585         u8 *dst = NULL;
6586         u8 mpp[ETH_ALEN];
6587
6588         memset(&pinfo, 0, sizeof(pinfo));
6589
6590         if (!info->attrs[NL80211_ATTR_MAC])
6591                 return -EINVAL;
6592
6593         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6594
6595         if (!rdev->ops->get_mpp)
6596                 return -EOPNOTSUPP;
6597
6598         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6599                 return -EOPNOTSUPP;
6600
6601         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6602         if (err)
6603                 return err;
6604
6605         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6606         if (!msg)
6607                 return -ENOMEM;
6608
6609         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6610                                dev, dst, mpp, &pinfo) < 0) {
6611                 nlmsg_free(msg);
6612                 return -ENOBUFS;
6613         }
6614
6615         return genlmsg_reply(msg, info);
6616 }
6617
6618 static int nl80211_dump_mpp(struct sk_buff *skb,
6619                             struct netlink_callback *cb)
6620 {
6621         struct mpath_info pinfo;
6622         struct cfg80211_registered_device *rdev;
6623         struct wireless_dev *wdev;
6624         u8 dst[ETH_ALEN];
6625         u8 mpp[ETH_ALEN];
6626         int path_idx = cb->args[2];
6627         int err;
6628
6629         rtnl_lock();
6630         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6631         if (err)
6632                 goto out_err;
6633
6634         if (!rdev->ops->dump_mpp) {
6635                 err = -EOPNOTSUPP;
6636                 goto out_err;
6637         }
6638
6639         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6640                 err = -EOPNOTSUPP;
6641                 goto out_err;
6642         }
6643
6644         while (1) {
6645                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6646                                     mpp, &pinfo);
6647                 if (err == -ENOENT)
6648                         break;
6649                 if (err)
6650                         goto out_err;
6651
6652                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6653                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6654                                        wdev->netdev, dst, mpp,
6655                                        &pinfo) < 0)
6656                         goto out;
6657
6658                 path_idx++;
6659         }
6660
6661  out:
6662         cb->args[2] = path_idx;
6663         err = skb->len;
6664  out_err:
6665         rtnl_unlock();
6666         return err;
6667 }
6668
6669 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6670 {
6671         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6672         struct net_device *dev = info->user_ptr[1];
6673         struct wireless_dev *wdev = dev->ieee80211_ptr;
6674         struct bss_parameters params;
6675         int err;
6676
6677         memset(&params, 0, sizeof(params));
6678         /* default to not changing parameters */
6679         params.use_cts_prot = -1;
6680         params.use_short_preamble = -1;
6681         params.use_short_slot_time = -1;
6682         params.ap_isolate = -1;
6683         params.ht_opmode = -1;
6684         params.p2p_ctwindow = -1;
6685         params.p2p_opp_ps = -1;
6686
6687         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6688                 params.use_cts_prot =
6689                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6690         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6691                 params.use_short_preamble =
6692                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6693         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6694                 params.use_short_slot_time =
6695                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6696         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6697                 params.basic_rates =
6698                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6699                 params.basic_rates_len =
6700                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6701         }
6702         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6703                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6704         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6705                 params.ht_opmode =
6706                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6707
6708         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6709                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6710                         return -EINVAL;
6711                 params.p2p_ctwindow =
6712                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6713                 if (params.p2p_ctwindow != 0 &&
6714                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6715                         return -EINVAL;
6716         }
6717
6718         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6719                 u8 tmp;
6720
6721                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6722                         return -EINVAL;
6723                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6724                 params.p2p_opp_ps = tmp;
6725                 if (params.p2p_opp_ps &&
6726                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6727                         return -EINVAL;
6728         }
6729
6730         if (!rdev->ops->change_bss)
6731                 return -EOPNOTSUPP;
6732
6733         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6734             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6735                 return -EOPNOTSUPP;
6736
6737         wdev_lock(wdev);
6738         err = rdev_change_bss(rdev, dev, &params);
6739         wdev_unlock(wdev);
6740
6741         return err;
6742 }
6743
6744 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6745 {
6746         char *data = NULL;
6747         bool is_indoor;
6748         enum nl80211_user_reg_hint_type user_reg_hint_type;
6749         u32 owner_nlportid;
6750
6751         /*
6752          * You should only get this when cfg80211 hasn't yet initialized
6753          * completely when built-in to the kernel right between the time
6754          * window between nl80211_init() and regulatory_init(), if that is
6755          * even possible.
6756          */
6757         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6758                 return -EINPROGRESS;
6759
6760         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6761                 user_reg_hint_type =
6762                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6763         else
6764                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6765
6766         switch (user_reg_hint_type) {
6767         case NL80211_USER_REG_HINT_USER:
6768         case NL80211_USER_REG_HINT_CELL_BASE:
6769                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6770                         return -EINVAL;
6771
6772                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6773                 return regulatory_hint_user(data, user_reg_hint_type);
6774         case NL80211_USER_REG_HINT_INDOOR:
6775                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6776                         owner_nlportid = info->snd_portid;
6777                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6778                 } else {
6779                         owner_nlportid = 0;
6780                         is_indoor = true;
6781                 }
6782
6783                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6784         default:
6785                 return -EINVAL;
6786         }
6787 }
6788
6789 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6790 {
6791         return reg_reload_regdb();
6792 }
6793
6794 static int nl80211_get_mesh_config(struct sk_buff *skb,
6795                                    struct genl_info *info)
6796 {
6797         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6798         struct net_device *dev = info->user_ptr[1];
6799         struct wireless_dev *wdev = dev->ieee80211_ptr;
6800         struct mesh_config cur_params;
6801         int err = 0;
6802         void *hdr;
6803         struct nlattr *pinfoattr;
6804         struct sk_buff *msg;
6805
6806         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6807                 return -EOPNOTSUPP;
6808
6809         if (!rdev->ops->get_mesh_config)
6810                 return -EOPNOTSUPP;
6811
6812         wdev_lock(wdev);
6813         /* If not connected, get default parameters */
6814         if (!wdev->mesh_id_len)
6815                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6816         else
6817                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6818         wdev_unlock(wdev);
6819
6820         if (err)
6821                 return err;
6822
6823         /* Draw up a netlink message to send back */
6824         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6825         if (!msg)
6826                 return -ENOMEM;
6827         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6828                              NL80211_CMD_GET_MESH_CONFIG);
6829         if (!hdr)
6830                 goto out;
6831         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6832         if (!pinfoattr)
6833                 goto nla_put_failure;
6834         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6835             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6836                         cur_params.dot11MeshRetryTimeout) ||
6837             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6838                         cur_params.dot11MeshConfirmTimeout) ||
6839             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6840                         cur_params.dot11MeshHoldingTimeout) ||
6841             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6842                         cur_params.dot11MeshMaxPeerLinks) ||
6843             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6844                        cur_params.dot11MeshMaxRetries) ||
6845             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6846                        cur_params.dot11MeshTTL) ||
6847             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6848                        cur_params.element_ttl) ||
6849             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6850                        cur_params.auto_open_plinks) ||
6851             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6852                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6853             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6854                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6855             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6856                         cur_params.path_refresh_time) ||
6857             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6858                         cur_params.min_discovery_timeout) ||
6859             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6860                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6861             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6862                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6863             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6864                         cur_params.dot11MeshHWMPperrMinInterval) ||
6865             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6866                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6867             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6868                        cur_params.dot11MeshHWMPRootMode) ||
6869             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6870                         cur_params.dot11MeshHWMPRannInterval) ||
6871             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6872                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6873             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6874                        cur_params.dot11MeshForwarding) ||
6875             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6876                         cur_params.rssi_threshold) ||
6877             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6878                         cur_params.ht_opmode) ||
6879             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6880                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6881             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6882                         cur_params.dot11MeshHWMProotInterval) ||
6883             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6884                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6885             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6886                         cur_params.power_mode) ||
6887             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6888                         cur_params.dot11MeshAwakeWindowDuration) ||
6889             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6890                         cur_params.plink_timeout) ||
6891             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6892                        cur_params.dot11MeshConnectedToMeshGate) ||
6893             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
6894                        cur_params.dot11MeshNolearn) ||
6895             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
6896                        cur_params.dot11MeshConnectedToAuthServer))
6897                 goto nla_put_failure;
6898         nla_nest_end(msg, pinfoattr);
6899         genlmsg_end(msg, hdr);
6900         return genlmsg_reply(msg, info);
6901
6902  nla_put_failure:
6903  out:
6904         nlmsg_free(msg);
6905         return -ENOBUFS;
6906 }
6907
6908 static const struct nla_policy
6909 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6910         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6911                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6912         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6913                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6914         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6915                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6916         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6917                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6918         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6919         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6920         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6921         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6922         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6923                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6924         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6925         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6926         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6927         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6928         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6929                 NLA_POLICY_MIN(NLA_U16, 1),
6930         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6931                 NLA_POLICY_MIN(NLA_U16, 1),
6932         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6933                 NLA_POLICY_MIN(NLA_U16, 1),
6934         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6935         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6936                 NLA_POLICY_MIN(NLA_U16, 1),
6937         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6938         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6939         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6940                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6941         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6942         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6943         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6944                 NLA_POLICY_MIN(NLA_U16, 1),
6945         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6946                 NLA_POLICY_MIN(NLA_U16, 1),
6947         [NL80211_MESHCONF_POWER_MODE] =
6948                 NLA_POLICY_RANGE(NLA_U32,
6949                                  NL80211_MESH_POWER_ACTIVE,
6950                                  NL80211_MESH_POWER_MAX),
6951         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6952         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6953         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6954         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6955         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6956 };
6957
6958 static const struct nla_policy
6959         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6960         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6961         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6962         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6963         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6964         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6965         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6966         [NL80211_MESH_SETUP_IE] =
6967                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6968                                        IEEE80211_MAX_DATA_LEN),
6969         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6970 };
6971
6972 static int nl80211_parse_mesh_config(struct genl_info *info,
6973                                      struct mesh_config *cfg,
6974                                      u32 *mask_out)
6975 {
6976         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6977         u32 mask = 0;
6978         u16 ht_opmode;
6979
6980 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6981 do {                                                                    \
6982         if (tb[attr]) {                                                 \
6983                 cfg->param = fn(tb[attr]);                              \
6984                 mask |= BIT((attr) - 1);                                \
6985         }                                                               \
6986 } while (0)
6987
6988         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6989                 return -EINVAL;
6990         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6991                 return -EINVAL;
6992
6993         /* This makes sure that there aren't more than 32 mesh config
6994          * parameters (otherwise our bitfield scheme would not work.) */
6995         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6996
6997         /* Fill in the params struct */
6998         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6999                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7000         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7001                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
7002                                   nla_get_u16);
7003         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7004                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7005                                   nla_get_u16);
7006         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7007                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7008                                   nla_get_u16);
7009         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7010                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7011         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7012                                   NL80211_MESHCONF_TTL, nla_get_u8);
7013         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7014                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7015         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7016                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7017                                   nla_get_u8);
7018         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7019                                   mask,
7020                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7021                                   nla_get_u32);
7022         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7023                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7024                                   nla_get_u8);
7025         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7026                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7027                                   nla_get_u32);
7028         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7029             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7030                 return -EINVAL;
7031         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7032                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7033                                   nla_get_u16);
7034         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7035                                   mask,
7036                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7037                                   nla_get_u32);
7038         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7039             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7040              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7041                 return -EINVAL;
7042         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7043                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7044                                   nla_get_u16);
7045         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7046                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7047                                   nla_get_u16);
7048         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7049                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7050                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7051                                   nla_get_u16);
7052         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7053                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7054         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7055                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7056                                   nla_get_u16);
7057         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7058                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7059                                   nla_get_u8);
7060         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7061                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7062         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7063                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7064                                   nla_get_s32);
7065         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7066                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7067                                   nla_get_u8);
7068         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7069                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7070                                   nla_get_u8);
7071         /*
7072          * Check HT operation mode based on
7073          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7074          */
7075         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7076                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7077
7078                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7079                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7080                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7081                         return -EINVAL;
7082
7083                 /* NON_HT_STA bit is reserved, but some programs set it */
7084                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7085
7086                 cfg->ht_opmode = ht_opmode;
7087                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7088         }
7089         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7090                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7091                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7092                                   nla_get_u32);
7093         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7094             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7095              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7096                 return -EINVAL;
7097         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7098                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7099                                   nla_get_u16);
7100         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7101                                   mask,
7102                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7103                                   nla_get_u16);
7104         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7105                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7106         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7107                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7108         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7109                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7110         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7111                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7112         if (mask_out)
7113                 *mask_out = mask;
7114
7115         return 0;
7116
7117 #undef FILL_IN_MESH_PARAM_IF_SET
7118 }
7119
7120 static int nl80211_parse_mesh_setup(struct genl_info *info,
7121                                      struct mesh_setup *setup)
7122 {
7123         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7124         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7125
7126         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7127                 return -EINVAL;
7128         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7129                 return -EINVAL;
7130
7131         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7132                 setup->sync_method =
7133                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7134                  IEEE80211_SYNC_METHOD_VENDOR :
7135                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7136
7137         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7138                 setup->path_sel_proto =
7139                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7140                  IEEE80211_PATH_PROTOCOL_VENDOR :
7141                  IEEE80211_PATH_PROTOCOL_HWMP;
7142
7143         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7144                 setup->path_metric =
7145                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7146                  IEEE80211_PATH_METRIC_VENDOR :
7147                  IEEE80211_PATH_METRIC_AIRTIME;
7148
7149         if (tb[NL80211_MESH_SETUP_IE]) {
7150                 struct nlattr *ieattr =
7151                         tb[NL80211_MESH_SETUP_IE];
7152                 setup->ie = nla_data(ieattr);
7153                 setup->ie_len = nla_len(ieattr);
7154         }
7155         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7156             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7157                 return -EINVAL;
7158         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7159         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7160         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7161         if (setup->is_secure)
7162                 setup->user_mpm = true;
7163
7164         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7165                 if (!setup->user_mpm)
7166                         return -EINVAL;
7167                 setup->auth_id =
7168                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7169         }
7170
7171         return 0;
7172 }
7173
7174 static int nl80211_update_mesh_config(struct sk_buff *skb,
7175                                       struct genl_info *info)
7176 {
7177         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7178         struct net_device *dev = info->user_ptr[1];
7179         struct wireless_dev *wdev = dev->ieee80211_ptr;
7180         struct mesh_config cfg;
7181         u32 mask;
7182         int err;
7183
7184         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7185                 return -EOPNOTSUPP;
7186
7187         if (!rdev->ops->update_mesh_config)
7188                 return -EOPNOTSUPP;
7189
7190         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7191         if (err)
7192                 return err;
7193
7194         wdev_lock(wdev);
7195         if (!wdev->mesh_id_len)
7196                 err = -ENOLINK;
7197
7198         if (!err)
7199                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7200
7201         wdev_unlock(wdev);
7202
7203         return err;
7204 }
7205
7206 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7207                               struct sk_buff *msg)
7208 {
7209         struct nlattr *nl_reg_rules;
7210         unsigned int i;
7211
7212         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7213             (regdom->dfs_region &&
7214              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7215                 goto nla_put_failure;
7216
7217         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7218         if (!nl_reg_rules)
7219                 goto nla_put_failure;
7220
7221         for (i = 0; i < regdom->n_reg_rules; i++) {
7222                 struct nlattr *nl_reg_rule;
7223                 const struct ieee80211_reg_rule *reg_rule;
7224                 const struct ieee80211_freq_range *freq_range;
7225                 const struct ieee80211_power_rule *power_rule;
7226                 unsigned int max_bandwidth_khz;
7227
7228                 reg_rule = &regdom->reg_rules[i];
7229                 freq_range = &reg_rule->freq_range;
7230                 power_rule = &reg_rule->power_rule;
7231
7232                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7233                 if (!nl_reg_rule)
7234                         goto nla_put_failure;
7235
7236                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7237                 if (!max_bandwidth_khz)
7238                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7239                                                                   reg_rule);
7240
7241                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7242                                 reg_rule->flags) ||
7243                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7244                                 freq_range->start_freq_khz) ||
7245                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7246                                 freq_range->end_freq_khz) ||
7247                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7248                                 max_bandwidth_khz) ||
7249                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7250                                 power_rule->max_antenna_gain) ||
7251                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7252                                 power_rule->max_eirp) ||
7253                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7254                                 reg_rule->dfs_cac_ms))
7255                         goto nla_put_failure;
7256
7257                 nla_nest_end(msg, nl_reg_rule);
7258         }
7259
7260         nla_nest_end(msg, nl_reg_rules);
7261         return 0;
7262
7263 nla_put_failure:
7264         return -EMSGSIZE;
7265 }
7266
7267 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7268 {
7269         const struct ieee80211_regdomain *regdom = NULL;
7270         struct cfg80211_registered_device *rdev;
7271         struct wiphy *wiphy = NULL;
7272         struct sk_buff *msg;
7273         void *hdr;
7274
7275         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7276         if (!msg)
7277                 return -ENOBUFS;
7278
7279         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7280                              NL80211_CMD_GET_REG);
7281         if (!hdr)
7282                 goto put_failure;
7283
7284         if (info->attrs[NL80211_ATTR_WIPHY]) {
7285                 bool self_managed;
7286
7287                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7288                 if (IS_ERR(rdev)) {
7289                         nlmsg_free(msg);
7290                         return PTR_ERR(rdev);
7291                 }
7292
7293                 wiphy = &rdev->wiphy;
7294                 self_managed = wiphy->regulatory_flags &
7295                                REGULATORY_WIPHY_SELF_MANAGED;
7296                 regdom = get_wiphy_regdom(wiphy);
7297
7298                 /* a self-managed-reg device must have a private regdom */
7299                 if (WARN_ON(!regdom && self_managed)) {
7300                         nlmsg_free(msg);
7301                         return -EINVAL;
7302                 }
7303
7304                 if (regdom &&
7305                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7306                         goto nla_put_failure;
7307         }
7308
7309         if (!wiphy && reg_last_request_cell_base() &&
7310             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7311                         NL80211_USER_REG_HINT_CELL_BASE))
7312                 goto nla_put_failure;
7313
7314         rcu_read_lock();
7315
7316         if (!regdom)
7317                 regdom = rcu_dereference(cfg80211_regdomain);
7318
7319         if (nl80211_put_regdom(regdom, msg))
7320                 goto nla_put_failure_rcu;
7321
7322         rcu_read_unlock();
7323
7324         genlmsg_end(msg, hdr);
7325         return genlmsg_reply(msg, info);
7326
7327 nla_put_failure_rcu:
7328         rcu_read_unlock();
7329 nla_put_failure:
7330 put_failure:
7331         nlmsg_free(msg);
7332         return -EMSGSIZE;
7333 }
7334
7335 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7336                                u32 seq, int flags, struct wiphy *wiphy,
7337                                const struct ieee80211_regdomain *regdom)
7338 {
7339         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7340                                    NL80211_CMD_GET_REG);
7341
7342         if (!hdr)
7343                 return -1;
7344
7345         genl_dump_check_consistent(cb, hdr);
7346
7347         if (nl80211_put_regdom(regdom, msg))
7348                 goto nla_put_failure;
7349
7350         if (!wiphy && reg_last_request_cell_base() &&
7351             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7352                         NL80211_USER_REG_HINT_CELL_BASE))
7353                 goto nla_put_failure;
7354
7355         if (wiphy &&
7356             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7357                 goto nla_put_failure;
7358
7359         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7360             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7361                 goto nla_put_failure;
7362
7363         genlmsg_end(msg, hdr);
7364         return 0;
7365
7366 nla_put_failure:
7367         genlmsg_cancel(msg, hdr);
7368         return -EMSGSIZE;
7369 }
7370
7371 static int nl80211_get_reg_dump(struct sk_buff *skb,
7372                                 struct netlink_callback *cb)
7373 {
7374         const struct ieee80211_regdomain *regdom = NULL;
7375         struct cfg80211_registered_device *rdev;
7376         int err, reg_idx, start = cb->args[2];
7377
7378         rtnl_lock();
7379
7380         if (cfg80211_regdomain && start == 0) {
7381                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7382                                           NLM_F_MULTI, NULL,
7383                                           rtnl_dereference(cfg80211_regdomain));
7384                 if (err < 0)
7385                         goto out_err;
7386         }
7387
7388         /* the global regdom is idx 0 */
7389         reg_idx = 1;
7390         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7391                 regdom = get_wiphy_regdom(&rdev->wiphy);
7392                 if (!regdom)
7393                         continue;
7394
7395                 if (++reg_idx <= start)
7396                         continue;
7397
7398                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7399                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7400                 if (err < 0) {
7401                         reg_idx--;
7402                         break;
7403                 }
7404         }
7405
7406         cb->args[2] = reg_idx;
7407         err = skb->len;
7408 out_err:
7409         rtnl_unlock();
7410         return err;
7411 }
7412
7413 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7414 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7415         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7416         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7417         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7418         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7419         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7420         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7421         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7422 };
7423
7424 static int parse_reg_rule(struct nlattr *tb[],
7425         struct ieee80211_reg_rule *reg_rule)
7426 {
7427         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7428         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7429
7430         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7431                 return -EINVAL;
7432         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7433                 return -EINVAL;
7434         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7435                 return -EINVAL;
7436         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7437                 return -EINVAL;
7438         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7439                 return -EINVAL;
7440
7441         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7442
7443         freq_range->start_freq_khz =
7444                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7445         freq_range->end_freq_khz =
7446                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7447         freq_range->max_bandwidth_khz =
7448                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7449
7450         power_rule->max_eirp =
7451                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7452
7453         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7454                 power_rule->max_antenna_gain =
7455                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7456
7457         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7458                 reg_rule->dfs_cac_ms =
7459                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7460
7461         return 0;
7462 }
7463
7464 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7465 {
7466         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7467         struct nlattr *nl_reg_rule;
7468         char *alpha2;
7469         int rem_reg_rules, r;
7470         u32 num_rules = 0, rule_idx = 0;
7471         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7472         struct ieee80211_regdomain *rd;
7473
7474         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7475                 return -EINVAL;
7476
7477         if (!info->attrs[NL80211_ATTR_REG_RULES])
7478                 return -EINVAL;
7479
7480         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7481
7482         if (info->attrs[NL80211_ATTR_DFS_REGION])
7483                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7484
7485         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7486                             rem_reg_rules) {
7487                 num_rules++;
7488                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7489                         return -EINVAL;
7490         }
7491
7492         if (!reg_is_valid_request(alpha2))
7493                 return -EINVAL;
7494
7495         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7496         if (!rd)
7497                 return -ENOMEM;
7498
7499         rd->n_reg_rules = num_rules;
7500         rd->alpha2[0] = alpha2[0];
7501         rd->alpha2[1] = alpha2[1];
7502
7503         /*
7504          * Disable DFS master mode if the DFS region was
7505          * not supported or known on this kernel.
7506          */
7507         if (reg_supported_dfs_region(dfs_region))
7508                 rd->dfs_region = dfs_region;
7509
7510         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7511                             rem_reg_rules) {
7512                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7513                                                 nl_reg_rule, reg_rule_policy,
7514                                                 info->extack);
7515                 if (r)
7516                         goto bad_reg;
7517                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7518                 if (r)
7519                         goto bad_reg;
7520
7521                 rule_idx++;
7522
7523                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7524                         r = -EINVAL;
7525                         goto bad_reg;
7526                 }
7527         }
7528
7529         /* set_regdom takes ownership of rd */
7530         return set_regdom(rd, REGD_SOURCE_CRDA);
7531  bad_reg:
7532         kfree(rd);
7533         return r;
7534 }
7535 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7536
7537 static int validate_scan_freqs(struct nlattr *freqs)
7538 {
7539         struct nlattr *attr1, *attr2;
7540         int n_channels = 0, tmp1, tmp2;
7541
7542         nla_for_each_nested(attr1, freqs, tmp1)
7543                 if (nla_len(attr1) != sizeof(u32))
7544                         return 0;
7545
7546         nla_for_each_nested(attr1, freqs, tmp1) {
7547                 n_channels++;
7548                 /*
7549                  * Some hardware has a limited channel list for
7550                  * scanning, and it is pretty much nonsensical
7551                  * to scan for a channel twice, so disallow that
7552                  * and don't require drivers to check that the
7553                  * channel list they get isn't longer than what
7554                  * they can scan, as long as they can scan all
7555                  * the channels they registered at once.
7556                  */
7557                 nla_for_each_nested(attr2, freqs, tmp2)
7558                         if (attr1 != attr2 &&
7559                             nla_get_u32(attr1) == nla_get_u32(attr2))
7560                                 return 0;
7561         }
7562
7563         return n_channels;
7564 }
7565
7566 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7567 {
7568         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7569 }
7570
7571 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7572                             struct cfg80211_bss_selection *bss_select)
7573 {
7574         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7575         struct nlattr *nest;
7576         int err;
7577         bool found = false;
7578         int i;
7579
7580         /* only process one nested attribute */
7581         nest = nla_data(nla);
7582         if (!nla_ok(nest, nla_len(nest)))
7583                 return -EINVAL;
7584
7585         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7586                                           nest, nl80211_bss_select_policy,
7587                                           NULL);
7588         if (err)
7589                 return err;
7590
7591         /* only one attribute may be given */
7592         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7593                 if (attr[i]) {
7594                         if (found)
7595                                 return -EINVAL;
7596                         found = true;
7597                 }
7598         }
7599
7600         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7601
7602         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7603                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7604
7605         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7606                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7607                 bss_select->param.band_pref =
7608                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7609                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7610                         return -EINVAL;
7611         }
7612
7613         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7614                 struct nl80211_bss_select_rssi_adjust *adj_param;
7615
7616                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7617                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7618                 bss_select->param.adjust.band = adj_param->band;
7619                 bss_select->param.adjust.delta = adj_param->delta;
7620                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7621                         return -EINVAL;
7622         }
7623
7624         /* user-space did not provide behaviour attribute */
7625         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7626                 return -EINVAL;
7627
7628         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7629                 return -EINVAL;
7630
7631         return 0;
7632 }
7633
7634 int nl80211_parse_random_mac(struct nlattr **attrs,
7635                              u8 *mac_addr, u8 *mac_addr_mask)
7636 {
7637         int i;
7638
7639         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7640                 eth_zero_addr(mac_addr);
7641                 eth_zero_addr(mac_addr_mask);
7642                 mac_addr[0] = 0x2;
7643                 mac_addr_mask[0] = 0x3;
7644
7645                 return 0;
7646         }
7647
7648         /* need both or none */
7649         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7650                 return -EINVAL;
7651
7652         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7653         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7654
7655         /* don't allow or configure an mcast address */
7656         if (!is_multicast_ether_addr(mac_addr_mask) ||
7657             is_multicast_ether_addr(mac_addr))
7658                 return -EINVAL;
7659
7660         /*
7661          * allow users to pass a MAC address that has bits set outside
7662          * of the mask, but don't bother drivers with having to deal
7663          * with such bits
7664          */
7665         for (i = 0; i < ETH_ALEN; i++)
7666                 mac_addr[i] &= mac_addr_mask[i];
7667
7668         return 0;
7669 }
7670
7671 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7672 {
7673         ASSERT_WDEV_LOCK(wdev);
7674
7675         if (!cfg80211_beaconing_iface_active(wdev))
7676                 return true;
7677
7678         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7679                 return true;
7680
7681         return regulatory_pre_cac_allowed(wdev->wiphy);
7682 }
7683
7684 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7685                                     enum nl80211_ext_feature_index feat)
7686 {
7687         if (!(flags & flag))
7688                 return true;
7689         if (wiphy_ext_feature_isset(wiphy, feat))
7690                 return true;
7691         return false;
7692 }
7693
7694 static int
7695 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7696                          void *request, struct nlattr **attrs,
7697                          bool is_sched_scan)
7698 {
7699         u8 *mac_addr, *mac_addr_mask;
7700         u32 *flags;
7701         enum nl80211_feature_flags randomness_flag;
7702
7703         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7704                 return 0;
7705
7706         if (is_sched_scan) {
7707                 struct cfg80211_sched_scan_request *req = request;
7708
7709                 randomness_flag = wdev ?
7710                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7711                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7712                 flags = &req->flags;
7713                 mac_addr = req->mac_addr;
7714                 mac_addr_mask = req->mac_addr_mask;
7715         } else {
7716                 struct cfg80211_scan_request *req = request;
7717
7718                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7719                 flags = &req->flags;
7720                 mac_addr = req->mac_addr;
7721                 mac_addr_mask = req->mac_addr_mask;
7722         }
7723
7724         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7725
7726         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7727              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7728             !nl80211_check_scan_feat(wiphy, *flags,
7729                                      NL80211_SCAN_FLAG_LOW_SPAN,
7730                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7731             !nl80211_check_scan_feat(wiphy, *flags,
7732                                      NL80211_SCAN_FLAG_LOW_POWER,
7733                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7734             !nl80211_check_scan_feat(wiphy, *flags,
7735                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7736                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7737             !nl80211_check_scan_feat(wiphy, *flags,
7738                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7739                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7740             !nl80211_check_scan_feat(wiphy, *flags,
7741                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7742                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7743             !nl80211_check_scan_feat(wiphy, *flags,
7744                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7745                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7746             !nl80211_check_scan_feat(wiphy, *flags,
7747                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7748                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7749             !nl80211_check_scan_feat(wiphy, *flags,
7750                                      NL80211_SCAN_FLAG_RANDOM_SN,
7751                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7752             !nl80211_check_scan_feat(wiphy, *flags,
7753                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7754                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7755                 return -EOPNOTSUPP;
7756
7757         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7758                 int err;
7759
7760                 if (!(wiphy->features & randomness_flag) ||
7761                     (wdev && wdev->current_bss))
7762                         return -EOPNOTSUPP;
7763
7764                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7765                 if (err)
7766                         return err;
7767         }
7768
7769         return 0;
7770 }
7771
7772 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7773 {
7774         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7775         struct wireless_dev *wdev = info->user_ptr[1];
7776         struct cfg80211_scan_request *request;
7777         struct nlattr *scan_freqs = NULL;
7778         bool scan_freqs_khz = false;
7779         struct nlattr *attr;
7780         struct wiphy *wiphy;
7781         int err, tmp, n_ssids = 0, n_channels, i;
7782         size_t ie_len;
7783
7784         wiphy = &rdev->wiphy;
7785
7786         if (wdev->iftype == NL80211_IFTYPE_NAN)
7787                 return -EOPNOTSUPP;
7788
7789         if (!rdev->ops->scan)
7790                 return -EOPNOTSUPP;
7791
7792         if (rdev->scan_req || rdev->scan_msg)
7793                 return -EBUSY;
7794
7795         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
7796                 if (!wiphy_ext_feature_isset(wiphy,
7797                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
7798                         return -EOPNOTSUPP;
7799                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
7800                 scan_freqs_khz = true;
7801         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
7802                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
7803
7804         if (scan_freqs) {
7805                 n_channels = validate_scan_freqs(scan_freqs);
7806                 if (!n_channels)
7807                         return -EINVAL;
7808         } else {
7809                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7810         }
7811
7812         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7813                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7814                         n_ssids++;
7815
7816         if (n_ssids > wiphy->max_scan_ssids)
7817                 return -EINVAL;
7818
7819         if (info->attrs[NL80211_ATTR_IE])
7820                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7821         else
7822                 ie_len = 0;
7823
7824         if (ie_len > wiphy->max_scan_ie_len)
7825                 return -EINVAL;
7826
7827         request = kzalloc(sizeof(*request)
7828                         + sizeof(*request->ssids) * n_ssids
7829                         + sizeof(*request->channels) * n_channels
7830                         + ie_len, GFP_KERNEL);
7831         if (!request)
7832                 return -ENOMEM;
7833
7834         if (n_ssids)
7835                 request->ssids = (void *)&request->channels[n_channels];
7836         request->n_ssids = n_ssids;
7837         if (ie_len) {
7838                 if (n_ssids)
7839                         request->ie = (void *)(request->ssids + n_ssids);
7840                 else
7841                         request->ie = (void *)(request->channels + n_channels);
7842         }
7843
7844         i = 0;
7845         if (scan_freqs) {
7846                 /* user specified, bail out if channel not found */
7847                 nla_for_each_nested(attr, scan_freqs, tmp) {
7848                         struct ieee80211_channel *chan;
7849                         int freq = nla_get_u32(attr);
7850
7851                         if (!scan_freqs_khz)
7852                                 freq = MHZ_TO_KHZ(freq);
7853
7854                         chan = ieee80211_get_channel_khz(wiphy, freq);
7855                         if (!chan) {
7856                                 err = -EINVAL;
7857                                 goto out_free;
7858                         }
7859
7860                         /* ignore disabled channels */
7861                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7862                                 continue;
7863
7864                         request->channels[i] = chan;
7865                         i++;
7866                 }
7867         } else {
7868                 enum nl80211_band band;
7869
7870                 /* all channels */
7871                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7872                         int j;
7873
7874                         if (!wiphy->bands[band])
7875                                 continue;
7876                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7877                                 struct ieee80211_channel *chan;
7878
7879                                 chan = &wiphy->bands[band]->channels[j];
7880
7881                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7882                                         continue;
7883
7884                                 request->channels[i] = chan;
7885                                 i++;
7886                         }
7887                 }
7888         }
7889
7890         if (!i) {
7891                 err = -EINVAL;
7892                 goto out_free;
7893         }
7894
7895         request->n_channels = i;
7896
7897         wdev_lock(wdev);
7898         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7899                 struct ieee80211_channel *chan;
7900
7901                 if (request->n_channels != 1) {
7902                         wdev_unlock(wdev);
7903                         err = -EBUSY;
7904                         goto out_free;
7905                 }
7906
7907                 chan = request->channels[0];
7908                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7909                         wdev_unlock(wdev);
7910                         err = -EBUSY;
7911                         goto out_free;
7912                 }
7913         }
7914         wdev_unlock(wdev);
7915
7916         i = 0;
7917         if (n_ssids) {
7918                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7919                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7920                                 err = -EINVAL;
7921                                 goto out_free;
7922                         }
7923                         request->ssids[i].ssid_len = nla_len(attr);
7924                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7925                         i++;
7926                 }
7927         }
7928
7929         if (info->attrs[NL80211_ATTR_IE]) {
7930                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7931                 memcpy((void *)request->ie,
7932                        nla_data(info->attrs[NL80211_ATTR_IE]),
7933                        request->ie_len);
7934         }
7935
7936         for (i = 0; i < NUM_NL80211_BANDS; i++)
7937                 if (wiphy->bands[i])
7938                         request->rates[i] =
7939                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7940
7941         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7942                 nla_for_each_nested(attr,
7943                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7944                                     tmp) {
7945                         enum nl80211_band band = nla_type(attr);
7946
7947                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7948                                 err = -EINVAL;
7949                                 goto out_free;
7950                         }
7951
7952                         if (!wiphy->bands[band])
7953                                 continue;
7954
7955                         err = ieee80211_get_ratemask(wiphy->bands[band],
7956                                                      nla_data(attr),
7957                                                      nla_len(attr),
7958                                                      &request->rates[band]);
7959                         if (err)
7960                                 goto out_free;
7961                 }
7962         }
7963
7964         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7965                 if (!wiphy_ext_feature_isset(wiphy,
7966                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7967                         err = -EOPNOTSUPP;
7968                         goto out_free;
7969                 }
7970
7971                 request->duration =
7972                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7973                 request->duration_mandatory =
7974                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7975         }
7976
7977         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7978                                        false);
7979         if (err)
7980                 goto out_free;
7981
7982         request->no_cck =
7983                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7984
7985         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7986          * BSSID to scan for. This was problematic because that same attribute
7987          * was already used for another purpose (local random MAC address). The
7988          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7989          * compatibility with older userspace components, also use the
7990          * NL80211_ATTR_MAC value here if it can be determined to be used for
7991          * the specific BSSID use case instead of the random MAC address
7992          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7993          */
7994         if (info->attrs[NL80211_ATTR_BSSID])
7995                 memcpy(request->bssid,
7996                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7997         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7998                  info->attrs[NL80211_ATTR_MAC])
7999                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8000                        ETH_ALEN);
8001         else
8002                 eth_broadcast_addr(request->bssid);
8003
8004         request->wdev = wdev;
8005         request->wiphy = &rdev->wiphy;
8006         request->scan_start = jiffies;
8007
8008         rdev->scan_req = request;
8009         err = rdev_scan(rdev, request);
8010
8011         if (err)
8012                 goto out_free;
8013
8014         nl80211_send_scan_start(rdev, wdev);
8015         if (wdev->netdev)
8016                 dev_hold(wdev->netdev);
8017
8018         return 0;
8019
8020  out_free:
8021         rdev->scan_req = NULL;
8022         kfree(request);
8023
8024         return err;
8025 }
8026
8027 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8028 {
8029         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8030         struct wireless_dev *wdev = info->user_ptr[1];
8031
8032         if (!rdev->ops->abort_scan)
8033                 return -EOPNOTSUPP;
8034
8035         if (rdev->scan_msg)
8036                 return 0;
8037
8038         if (!rdev->scan_req)
8039                 return -ENOENT;
8040
8041         rdev_abort_scan(rdev, wdev);
8042         return 0;
8043 }
8044
8045 static int
8046 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8047                                struct cfg80211_sched_scan_request *request,
8048                                struct nlattr **attrs)
8049 {
8050         int tmp, err, i = 0;
8051         struct nlattr *attr;
8052
8053         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8054                 u32 interval;
8055
8056                 /*
8057                  * If scan plans are not specified,
8058                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8059                  * case one scan plan will be set with the specified scan
8060                  * interval and infinite number of iterations.
8061                  */
8062                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8063                 if (!interval)
8064                         return -EINVAL;
8065
8066                 request->scan_plans[0].interval =
8067                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8068                 if (!request->scan_plans[0].interval)
8069                         return -EINVAL;
8070
8071                 if (request->scan_plans[0].interval >
8072                     wiphy->max_sched_scan_plan_interval)
8073                         request->scan_plans[0].interval =
8074                                 wiphy->max_sched_scan_plan_interval;
8075
8076                 return 0;
8077         }
8078
8079         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8080                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8081
8082                 if (WARN_ON(i >= n_plans))
8083                         return -EINVAL;
8084
8085                 err = nla_parse_nested_deprecated(plan,
8086                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8087                                                   attr, nl80211_plan_policy,
8088                                                   NULL);
8089                 if (err)
8090                         return err;
8091
8092                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8093                         return -EINVAL;
8094
8095                 request->scan_plans[i].interval =
8096                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8097                 if (!request->scan_plans[i].interval ||
8098                     request->scan_plans[i].interval >
8099                     wiphy->max_sched_scan_plan_interval)
8100                         return -EINVAL;
8101
8102                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8103                         request->scan_plans[i].iterations =
8104                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8105                         if (!request->scan_plans[i].iterations ||
8106                             (request->scan_plans[i].iterations >
8107                              wiphy->max_sched_scan_plan_iterations))
8108                                 return -EINVAL;
8109                 } else if (i < n_plans - 1) {
8110                         /*
8111                          * All scan plans but the last one must specify
8112                          * a finite number of iterations
8113                          */
8114                         return -EINVAL;
8115                 }
8116
8117                 i++;
8118         }
8119
8120         /*
8121          * The last scan plan must not specify the number of
8122          * iterations, it is supposed to run infinitely
8123          */
8124         if (request->scan_plans[n_plans - 1].iterations)
8125                 return  -EINVAL;
8126
8127         return 0;
8128 }
8129
8130 static int
8131 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8132                                        struct cfg80211_match_set *match_sets,
8133                                        struct nlattr *tb_band_rssi,
8134                                        s32 rssi_thold)
8135 {
8136         struct nlattr *attr;
8137         int i, tmp, ret = 0;
8138
8139         if (!wiphy_ext_feature_isset(wiphy,
8140                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8141                 if (tb_band_rssi)
8142                         ret = -EOPNOTSUPP;
8143                 else
8144                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8145                                 match_sets->per_band_rssi_thold[i] =
8146                                         NL80211_SCAN_RSSI_THOLD_OFF;
8147                 return ret;
8148         }
8149
8150         for (i = 0; i < NUM_NL80211_BANDS; i++)
8151                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8152
8153         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8154                 enum nl80211_band band = nla_type(attr);
8155
8156                 if (band < 0 || band >= NUM_NL80211_BANDS)
8157                         return -EINVAL;
8158
8159                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8160         }
8161
8162         return 0;
8163 }
8164
8165 static struct cfg80211_sched_scan_request *
8166 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8167                          struct nlattr **attrs, int max_match_sets)
8168 {
8169         struct cfg80211_sched_scan_request *request;
8170         struct nlattr *attr;
8171         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8172         enum nl80211_band band;
8173         size_t ie_len;
8174         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8175         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8176
8177         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8178                 n_channels = validate_scan_freqs(
8179                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8180                 if (!n_channels)
8181                         return ERR_PTR(-EINVAL);
8182         } else {
8183                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8184         }
8185
8186         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8187                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8188                                     tmp)
8189                         n_ssids++;
8190
8191         if (n_ssids > wiphy->max_sched_scan_ssids)
8192                 return ERR_PTR(-EINVAL);
8193
8194         /*
8195          * First, count the number of 'real' matchsets. Due to an issue with
8196          * the old implementation, matchsets containing only the RSSI attribute
8197          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8198          * RSSI for all matchsets, rather than their own matchset for reporting
8199          * all APs with a strong RSSI. This is needed to be compatible with
8200          * older userspace that treated a matchset with only the RSSI as the
8201          * global RSSI for all other matchsets - if there are other matchsets.
8202          */
8203         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8204                 nla_for_each_nested(attr,
8205                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8206                                     tmp) {
8207                         struct nlattr *rssi;
8208
8209                         err = nla_parse_nested_deprecated(tb,
8210                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8211                                                           attr,
8212                                                           nl80211_match_policy,
8213                                                           NULL);
8214                         if (err)
8215                                 return ERR_PTR(err);
8216
8217                         /* SSID and BSSID are mutually exclusive */
8218                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8219                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8220                                 return ERR_PTR(-EINVAL);
8221
8222                         /* add other standalone attributes here */
8223                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8224                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8225                                 n_match_sets++;
8226                                 continue;
8227                         }
8228                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8229                         if (rssi)
8230                                 default_match_rssi = nla_get_s32(rssi);
8231                 }
8232         }
8233
8234         /* However, if there's no other matchset, add the RSSI one */
8235         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8236                 n_match_sets = 1;
8237
8238         if (n_match_sets > max_match_sets)
8239                 return ERR_PTR(-EINVAL);
8240
8241         if (attrs[NL80211_ATTR_IE])
8242                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8243         else
8244                 ie_len = 0;
8245
8246         if (ie_len > wiphy->max_sched_scan_ie_len)
8247                 return ERR_PTR(-EINVAL);
8248
8249         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8250                 /*
8251                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8252                  * each scan plan already specifies its own interval
8253                  */
8254                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8255                         return ERR_PTR(-EINVAL);
8256
8257                 nla_for_each_nested(attr,
8258                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8259                         n_plans++;
8260         } else {
8261                 /*
8262                  * The scan interval attribute is kept for backward
8263                  * compatibility. If no scan plans are specified and sched scan
8264                  * interval is specified, one scan plan will be set with this
8265                  * scan interval and infinite number of iterations.
8266                  */
8267                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8268                         return ERR_PTR(-EINVAL);
8269
8270                 n_plans = 1;
8271         }
8272
8273         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8274                 return ERR_PTR(-EINVAL);
8275
8276         if (!wiphy_ext_feature_isset(
8277                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8278             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8279              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8280                 return ERR_PTR(-EINVAL);
8281
8282         request = kzalloc(sizeof(*request)
8283                         + sizeof(*request->ssids) * n_ssids
8284                         + sizeof(*request->match_sets) * n_match_sets
8285                         + sizeof(*request->scan_plans) * n_plans
8286                         + sizeof(*request->channels) * n_channels
8287                         + ie_len, GFP_KERNEL);
8288         if (!request)
8289                 return ERR_PTR(-ENOMEM);
8290
8291         if (n_ssids)
8292                 request->ssids = (void *)&request->channels[n_channels];
8293         request->n_ssids = n_ssids;
8294         if (ie_len) {
8295                 if (n_ssids)
8296                         request->ie = (void *)(request->ssids + n_ssids);
8297                 else
8298                         request->ie = (void *)(request->channels + n_channels);
8299         }
8300
8301         if (n_match_sets) {
8302                 if (request->ie)
8303                         request->match_sets = (void *)(request->ie + ie_len);
8304                 else if (n_ssids)
8305                         request->match_sets =
8306                                 (void *)(request->ssids + n_ssids);
8307                 else
8308                         request->match_sets =
8309                                 (void *)(request->channels + n_channels);
8310         }
8311         request->n_match_sets = n_match_sets;
8312
8313         if (n_match_sets)
8314                 request->scan_plans = (void *)(request->match_sets +
8315                                                n_match_sets);
8316         else if (request->ie)
8317                 request->scan_plans = (void *)(request->ie + ie_len);
8318         else if (n_ssids)
8319                 request->scan_plans = (void *)(request->ssids + n_ssids);
8320         else
8321                 request->scan_plans = (void *)(request->channels + n_channels);
8322
8323         request->n_scan_plans = n_plans;
8324
8325         i = 0;
8326         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8327                 /* user specified, bail out if channel not found */
8328                 nla_for_each_nested(attr,
8329                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8330                                     tmp) {
8331                         struct ieee80211_channel *chan;
8332
8333                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8334
8335                         if (!chan) {
8336                                 err = -EINVAL;
8337                                 goto out_free;
8338                         }
8339
8340                         /* ignore disabled channels */
8341                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8342                                 continue;
8343
8344                         request->channels[i] = chan;
8345                         i++;
8346                 }
8347         } else {
8348                 /* all channels */
8349                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8350                         int j;
8351
8352                         if (!wiphy->bands[band])
8353                                 continue;
8354                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8355                                 struct ieee80211_channel *chan;
8356
8357                                 chan = &wiphy->bands[band]->channels[j];
8358
8359                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8360                                         continue;
8361
8362                                 request->channels[i] = chan;
8363                                 i++;
8364                         }
8365                 }
8366         }
8367
8368         if (!i) {
8369                 err = -EINVAL;
8370                 goto out_free;
8371         }
8372
8373         request->n_channels = i;
8374
8375         i = 0;
8376         if (n_ssids) {
8377                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8378                                     tmp) {
8379                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8380                                 err = -EINVAL;
8381                                 goto out_free;
8382                         }
8383                         request->ssids[i].ssid_len = nla_len(attr);
8384                         memcpy(request->ssids[i].ssid, nla_data(attr),
8385                                nla_len(attr));
8386                         i++;
8387                 }
8388         }
8389
8390         i = 0;
8391         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8392                 nla_for_each_nested(attr,
8393                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8394                                     tmp) {
8395                         struct nlattr *ssid, *bssid, *rssi;
8396
8397                         err = nla_parse_nested_deprecated(tb,
8398                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8399                                                           attr,
8400                                                           nl80211_match_policy,
8401                                                           NULL);
8402                         if (err)
8403                                 goto out_free;
8404                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8405                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8406
8407                         if (!ssid && !bssid) {
8408                                 i++;
8409                                 continue;
8410                         }
8411
8412                         if (WARN_ON(i >= n_match_sets)) {
8413                                 /* this indicates a programming error,
8414                                  * the loop above should have verified
8415                                  * things properly
8416                                  */
8417                                 err = -EINVAL;
8418                                 goto out_free;
8419                         }
8420
8421                         if (ssid) {
8422                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8423                                         err = -EINVAL;
8424                                         goto out_free;
8425                                 }
8426                                 memcpy(request->match_sets[i].ssid.ssid,
8427                                        nla_data(ssid), nla_len(ssid));
8428                                 request->match_sets[i].ssid.ssid_len =
8429                                         nla_len(ssid);
8430                         }
8431                         if (bssid) {
8432                                 if (nla_len(bssid) != ETH_ALEN) {
8433                                         err = -EINVAL;
8434                                         goto out_free;
8435                                 }
8436                                 memcpy(request->match_sets[i].bssid,
8437                                        nla_data(bssid), ETH_ALEN);
8438                         }
8439
8440                         /* special attribute - old implementation w/a */
8441                         request->match_sets[i].rssi_thold = default_match_rssi;
8442                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8443                         if (rssi)
8444                                 request->match_sets[i].rssi_thold =
8445                                         nla_get_s32(rssi);
8446
8447                         /* Parse per band RSSI attribute */
8448                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8449                                 &request->match_sets[i],
8450                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8451                                 request->match_sets[i].rssi_thold);
8452                         if (err)
8453                                 goto out_free;
8454
8455                         i++;
8456                 }
8457
8458                 /* there was no other matchset, so the RSSI one is alone */
8459                 if (i == 0 && n_match_sets)
8460                         request->match_sets[0].rssi_thold = default_match_rssi;
8461
8462                 request->min_rssi_thold = INT_MAX;
8463                 for (i = 0; i < n_match_sets; i++)
8464                         request->min_rssi_thold =
8465                                 min(request->match_sets[i].rssi_thold,
8466                                     request->min_rssi_thold);
8467         } else {
8468                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8469         }
8470
8471         if (ie_len) {
8472                 request->ie_len = ie_len;
8473                 memcpy((void *)request->ie,
8474                        nla_data(attrs[NL80211_ATTR_IE]),
8475                        request->ie_len);
8476         }
8477
8478         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8479         if (err)
8480                 goto out_free;
8481
8482         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8483                 request->delay =
8484                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8485
8486         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8487                 request->relative_rssi = nla_get_s8(
8488                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8489                 request->relative_rssi_set = true;
8490         }
8491
8492         if (request->relative_rssi_set &&
8493             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8494                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8495
8496                 rssi_adjust = nla_data(
8497                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8498                 request->rssi_adjust.band = rssi_adjust->band;
8499                 request->rssi_adjust.delta = rssi_adjust->delta;
8500                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8501                         err = -EINVAL;
8502                         goto out_free;
8503                 }
8504         }
8505
8506         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8507         if (err)
8508                 goto out_free;
8509
8510         request->scan_start = jiffies;
8511
8512         return request;
8513
8514 out_free:
8515         kfree(request);
8516         return ERR_PTR(err);
8517 }
8518
8519 static int nl80211_start_sched_scan(struct sk_buff *skb,
8520                                     struct genl_info *info)
8521 {
8522         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8523         struct net_device *dev = info->user_ptr[1];
8524         struct wireless_dev *wdev = dev->ieee80211_ptr;
8525         struct cfg80211_sched_scan_request *sched_scan_req;
8526         bool want_multi;
8527         int err;
8528
8529         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8530                 return -EOPNOTSUPP;
8531
8532         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8533         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8534         if (err)
8535                 return err;
8536
8537         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8538                                                   info->attrs,
8539                                                   rdev->wiphy.max_match_sets);
8540
8541         err = PTR_ERR_OR_ZERO(sched_scan_req);
8542         if (err)
8543                 goto out_err;
8544
8545         /* leave request id zero for legacy request
8546          * or if driver does not support multi-scheduled scan
8547          */
8548         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8549                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8550
8551         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8552         if (err)
8553                 goto out_free;
8554
8555         sched_scan_req->dev = dev;
8556         sched_scan_req->wiphy = &rdev->wiphy;
8557
8558         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8559                 sched_scan_req->owner_nlportid = info->snd_portid;
8560
8561         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8562
8563         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8564         return 0;
8565
8566 out_free:
8567         kfree(sched_scan_req);
8568 out_err:
8569         return err;
8570 }
8571
8572 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8573                                    struct genl_info *info)
8574 {
8575         struct cfg80211_sched_scan_request *req;
8576         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8577         u64 cookie;
8578
8579         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8580                 return -EOPNOTSUPP;
8581
8582         if (info->attrs[NL80211_ATTR_COOKIE]) {
8583                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8584                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8585         }
8586
8587         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8588                                      struct cfg80211_sched_scan_request,
8589                                      list);
8590         if (!req || req->reqid ||
8591             (req->owner_nlportid &&
8592              req->owner_nlportid != info->snd_portid))
8593                 return -ENOENT;
8594
8595         return cfg80211_stop_sched_scan_req(rdev, req, false);
8596 }
8597
8598 static int nl80211_start_radar_detection(struct sk_buff *skb,
8599                                          struct genl_info *info)
8600 {
8601         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8602         struct net_device *dev = info->user_ptr[1];
8603         struct wireless_dev *wdev = dev->ieee80211_ptr;
8604         struct wiphy *wiphy = wdev->wiphy;
8605         struct cfg80211_chan_def chandef;
8606         enum nl80211_dfs_regions dfs_region;
8607         unsigned int cac_time_ms;
8608         int err;
8609
8610         dfs_region = reg_get_dfs_region(wiphy);
8611         if (dfs_region == NL80211_DFS_UNSET)
8612                 return -EINVAL;
8613
8614         err = nl80211_parse_chandef(rdev, info, &chandef);
8615         if (err)
8616                 return err;
8617
8618         if (netif_carrier_ok(dev))
8619                 return -EBUSY;
8620
8621         if (wdev->cac_started)
8622                 return -EBUSY;
8623
8624         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8625         if (err < 0)
8626                 return err;
8627
8628         if (err == 0)
8629                 return -EINVAL;
8630
8631         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8632                 return -EINVAL;
8633
8634         /* CAC start is offloaded to HW and can't be started manually */
8635         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8636                 return -EOPNOTSUPP;
8637
8638         if (!rdev->ops->start_radar_detection)
8639                 return -EOPNOTSUPP;
8640
8641         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8642         if (WARN_ON(!cac_time_ms))
8643                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8644
8645         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8646         if (!err) {
8647                 wdev->chandef = chandef;
8648                 wdev->cac_started = true;
8649                 wdev->cac_start_time = jiffies;
8650                 wdev->cac_time_ms = cac_time_ms;
8651         }
8652         return err;
8653 }
8654
8655 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8656                                           struct genl_info *info)
8657 {
8658         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8659         struct net_device *dev = info->user_ptr[1];
8660         struct wireless_dev *wdev = dev->ieee80211_ptr;
8661         struct wiphy *wiphy = wdev->wiphy;
8662         struct cfg80211_chan_def chandef;
8663         enum nl80211_dfs_regions dfs_region;
8664         int err;
8665
8666         dfs_region = reg_get_dfs_region(wiphy);
8667         if (dfs_region == NL80211_DFS_UNSET) {
8668                 GENL_SET_ERR_MSG(info,
8669                                  "DFS Region is not set. Unexpected Radar indication");
8670                 return -EINVAL;
8671         }
8672
8673         err = nl80211_parse_chandef(rdev, info, &chandef);
8674         if (err) {
8675                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8676                 return err;
8677         }
8678
8679         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8680         if (err < 0) {
8681                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8682                 return err;
8683         }
8684
8685         if (err == 0) {
8686                 GENL_SET_ERR_MSG(info,
8687                                  "Unexpected Radar indication for chandef/iftype");
8688                 return -EINVAL;
8689         }
8690
8691         /* Do not process this notification if radar is already detected
8692          * by kernel on this channel, and return success.
8693          */
8694         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8695                 return 0;
8696
8697         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8698
8699         cfg80211_sched_dfs_chan_update(rdev);
8700
8701         rdev->radar_chandef = chandef;
8702
8703         /* Propagate this notification to other radios as well */
8704         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8705
8706         return 0;
8707 }
8708
8709 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8710 {
8711         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8712         struct net_device *dev = info->user_ptr[1];
8713         struct wireless_dev *wdev = dev->ieee80211_ptr;
8714         struct cfg80211_csa_settings params;
8715         /* csa_attrs is defined static to avoid waste of stack size - this
8716          * function is called under RTNL lock, so this should not be a problem.
8717          */
8718         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8719         int err;
8720         bool need_new_beacon = false;
8721         bool need_handle_dfs_flag = true;
8722         int len, i;
8723         u32 cs_count;
8724
8725         if (!rdev->ops->channel_switch ||
8726             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8727                 return -EOPNOTSUPP;
8728
8729         switch (dev->ieee80211_ptr->iftype) {
8730         case NL80211_IFTYPE_AP:
8731         case NL80211_IFTYPE_P2P_GO:
8732                 need_new_beacon = true;
8733                 /* For all modes except AP the handle_dfs flag needs to be
8734                  * supplied to tell the kernel that userspace will handle radar
8735                  * events when they happen. Otherwise a switch to a channel
8736                  * requiring DFS will be rejected.
8737                  */
8738                 need_handle_dfs_flag = false;
8739
8740                 /* useless if AP is not running */
8741                 if (!wdev->beacon_interval)
8742                         return -ENOTCONN;
8743                 break;
8744         case NL80211_IFTYPE_ADHOC:
8745                 if (!wdev->ssid_len)
8746                         return -ENOTCONN;
8747                 break;
8748         case NL80211_IFTYPE_MESH_POINT:
8749                 if (!wdev->mesh_id_len)
8750                         return -ENOTCONN;
8751                 break;
8752         default:
8753                 return -EOPNOTSUPP;
8754         }
8755
8756         memset(&params, 0, sizeof(params));
8757         params.beacon_csa.ftm_responder = -1;
8758
8759         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8760             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8761                 return -EINVAL;
8762
8763         /* only important for AP, IBSS and mesh create IEs internally */
8764         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8765                 return -EINVAL;
8766
8767         /* Even though the attribute is u32, the specification says
8768          * u8, so let's make sure we don't overflow.
8769          */
8770         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8771         if (cs_count > 255)
8772                 return -EINVAL;
8773
8774         params.count = cs_count;
8775
8776         if (!need_new_beacon)
8777                 goto skip_beacons;
8778
8779         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8780         if (err)
8781                 return err;
8782
8783         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8784                                           info->attrs[NL80211_ATTR_CSA_IES],
8785                                           nl80211_policy, info->extack);
8786         if (err)
8787                 return err;
8788
8789         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8790         if (err)
8791                 return err;
8792
8793         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8794                 return -EINVAL;
8795
8796         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8797         if (!len || (len % sizeof(u16)))
8798                 return -EINVAL;
8799
8800         params.n_counter_offsets_beacon = len / sizeof(u16);
8801         if (rdev->wiphy.max_num_csa_counters &&
8802             (params.n_counter_offsets_beacon >
8803              rdev->wiphy.max_num_csa_counters))
8804                 return -EINVAL;
8805
8806         params.counter_offsets_beacon =
8807                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8808
8809         /* sanity checks - counters should fit and be the same */
8810         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8811                 u16 offset = params.counter_offsets_beacon[i];
8812
8813                 if (offset >= params.beacon_csa.tail_len)
8814                         return -EINVAL;
8815
8816                 if (params.beacon_csa.tail[offset] != params.count)
8817                         return -EINVAL;
8818         }
8819
8820         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8821                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8822                 if (!len || (len % sizeof(u16)))
8823                         return -EINVAL;
8824
8825                 params.n_counter_offsets_presp = len / sizeof(u16);
8826                 if (rdev->wiphy.max_num_csa_counters &&
8827                     (params.n_counter_offsets_presp >
8828                      rdev->wiphy.max_num_csa_counters))
8829                         return -EINVAL;
8830
8831                 params.counter_offsets_presp =
8832                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8833
8834                 /* sanity checks - counters should fit and be the same */
8835                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8836                         u16 offset = params.counter_offsets_presp[i];
8837
8838                         if (offset >= params.beacon_csa.probe_resp_len)
8839                                 return -EINVAL;
8840
8841                         if (params.beacon_csa.probe_resp[offset] !=
8842                             params.count)
8843                                 return -EINVAL;
8844                 }
8845         }
8846
8847 skip_beacons:
8848         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8849         if (err)
8850                 return err;
8851
8852         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8853                                            wdev->iftype))
8854                 return -EINVAL;
8855
8856         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8857                                             &params.chandef,
8858                                             wdev->iftype);
8859         if (err < 0)
8860                 return err;
8861
8862         if (err > 0) {
8863                 params.radar_required = true;
8864                 if (need_handle_dfs_flag &&
8865                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8866                         return -EINVAL;
8867                 }
8868         }
8869
8870         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8871                 params.block_tx = true;
8872
8873         wdev_lock(wdev);
8874         err = rdev_channel_switch(rdev, dev, &params);
8875         wdev_unlock(wdev);
8876
8877         return err;
8878 }
8879
8880 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8881                             u32 seq, int flags,
8882                             struct cfg80211_registered_device *rdev,
8883                             struct wireless_dev *wdev,
8884                             struct cfg80211_internal_bss *intbss)
8885 {
8886         struct cfg80211_bss *res = &intbss->pub;
8887         const struct cfg80211_bss_ies *ies;
8888         void *hdr;
8889         struct nlattr *bss;
8890
8891         ASSERT_WDEV_LOCK(wdev);
8892
8893         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8894                              NL80211_CMD_NEW_SCAN_RESULTS);
8895         if (!hdr)
8896                 return -1;
8897
8898         genl_dump_check_consistent(cb, hdr);
8899
8900         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8901                 goto nla_put_failure;
8902         if (wdev->netdev &&
8903             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8904                 goto nla_put_failure;
8905         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8906                               NL80211_ATTR_PAD))
8907                 goto nla_put_failure;
8908
8909         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8910         if (!bss)
8911                 goto nla_put_failure;
8912         if ((!is_zero_ether_addr(res->bssid) &&
8913              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8914                 goto nla_put_failure;
8915
8916         rcu_read_lock();
8917         /* indicate whether we have probe response data or not */
8918         if (rcu_access_pointer(res->proberesp_ies) &&
8919             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8920                 goto fail_unlock_rcu;
8921
8922         /* this pointer prefers to be pointed to probe response data
8923          * but is always valid
8924          */
8925         ies = rcu_dereference(res->ies);
8926         if (ies) {
8927                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8928                                       NL80211_BSS_PAD))
8929                         goto fail_unlock_rcu;
8930                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8931                                         ies->len, ies->data))
8932                         goto fail_unlock_rcu;
8933         }
8934
8935         /* and this pointer is always (unless driver didn't know) beacon data */
8936         ies = rcu_dereference(res->beacon_ies);
8937         if (ies && ies->from_beacon) {
8938                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8939                                       NL80211_BSS_PAD))
8940                         goto fail_unlock_rcu;
8941                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8942                                         ies->len, ies->data))
8943                         goto fail_unlock_rcu;
8944         }
8945         rcu_read_unlock();
8946
8947         if (res->beacon_interval &&
8948             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8949                 goto nla_put_failure;
8950         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8951             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8952             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
8953                         res->channel->freq_offset) ||
8954             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8955             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8956                         jiffies_to_msecs(jiffies - intbss->ts)))
8957                 goto nla_put_failure;
8958
8959         if (intbss->parent_tsf &&
8960             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8961                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8962              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8963                      intbss->parent_bssid)))
8964                 goto nla_put_failure;
8965
8966         if (intbss->ts_boottime &&
8967             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8968                               intbss->ts_boottime, NL80211_BSS_PAD))
8969                 goto nla_put_failure;
8970
8971         if (!nl80211_put_signal(msg, intbss->pub.chains,
8972                                 intbss->pub.chain_signal,
8973                                 NL80211_BSS_CHAIN_SIGNAL))
8974                 goto nla_put_failure;
8975
8976         switch (rdev->wiphy.signal_type) {
8977         case CFG80211_SIGNAL_TYPE_MBM:
8978                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8979                         goto nla_put_failure;
8980                 break;
8981         case CFG80211_SIGNAL_TYPE_UNSPEC:
8982                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8983                         goto nla_put_failure;
8984                 break;
8985         default:
8986                 break;
8987         }
8988
8989         switch (wdev->iftype) {
8990         case NL80211_IFTYPE_P2P_CLIENT:
8991         case NL80211_IFTYPE_STATION:
8992                 if (intbss == wdev->current_bss &&
8993                     nla_put_u32(msg, NL80211_BSS_STATUS,
8994                                 NL80211_BSS_STATUS_ASSOCIATED))
8995                         goto nla_put_failure;
8996                 break;
8997         case NL80211_IFTYPE_ADHOC:
8998                 if (intbss == wdev->current_bss &&
8999                     nla_put_u32(msg, NL80211_BSS_STATUS,
9000                                 NL80211_BSS_STATUS_IBSS_JOINED))
9001                         goto nla_put_failure;
9002                 break;
9003         default:
9004                 break;
9005         }
9006
9007         nla_nest_end(msg, bss);
9008
9009         genlmsg_end(msg, hdr);
9010         return 0;
9011
9012  fail_unlock_rcu:
9013         rcu_read_unlock();
9014  nla_put_failure:
9015         genlmsg_cancel(msg, hdr);
9016         return -EMSGSIZE;
9017 }
9018
9019 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9020 {
9021         struct cfg80211_registered_device *rdev;
9022         struct cfg80211_internal_bss *scan;
9023         struct wireless_dev *wdev;
9024         int start = cb->args[2], idx = 0;
9025         int err;
9026
9027         rtnl_lock();
9028         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9029         if (err) {
9030                 rtnl_unlock();
9031                 return err;
9032         }
9033
9034         wdev_lock(wdev);
9035         spin_lock_bh(&rdev->bss_lock);
9036
9037         /*
9038          * dump_scan will be called multiple times to break up the scan results
9039          * into multiple messages.  It is unlikely that any more bss-es will be
9040          * expired after the first call, so only call only call this on the
9041          * first dump_scan invocation.
9042          */
9043         if (start == 0)
9044                 cfg80211_bss_expire(rdev);
9045
9046         cb->seq = rdev->bss_generation;
9047
9048         list_for_each_entry(scan, &rdev->bss_list, list) {
9049                 if (++idx <= start)
9050                         continue;
9051                 if (nl80211_send_bss(skb, cb,
9052                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9053                                 rdev, wdev, scan) < 0) {
9054                         idx--;
9055                         break;
9056                 }
9057         }
9058
9059         spin_unlock_bh(&rdev->bss_lock);
9060         wdev_unlock(wdev);
9061
9062         cb->args[2] = idx;
9063         rtnl_unlock();
9064
9065         return skb->len;
9066 }
9067
9068 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9069                                int flags, struct net_device *dev,
9070                                bool allow_radio_stats,
9071                                struct survey_info *survey)
9072 {
9073         void *hdr;
9074         struct nlattr *infoattr;
9075
9076         /* skip radio stats if userspace didn't request them */
9077         if (!survey->channel && !allow_radio_stats)
9078                 return 0;
9079
9080         hdr = nl80211hdr_put(msg, portid, seq, flags,
9081                              NL80211_CMD_NEW_SURVEY_RESULTS);
9082         if (!hdr)
9083                 return -ENOMEM;
9084
9085         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9086                 goto nla_put_failure;
9087
9088         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9089         if (!infoattr)
9090                 goto nla_put_failure;
9091
9092         if (survey->channel &&
9093             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9094                         survey->channel->center_freq))
9095                 goto nla_put_failure;
9096
9097         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9098             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9099                 goto nla_put_failure;
9100         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9101             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9102                 goto nla_put_failure;
9103         if ((survey->filled & SURVEY_INFO_TIME) &&
9104             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9105                         survey->time, NL80211_SURVEY_INFO_PAD))
9106                 goto nla_put_failure;
9107         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9108             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9109                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9110                 goto nla_put_failure;
9111         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9112             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9113                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9114                 goto nla_put_failure;
9115         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9116             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9117                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9118                 goto nla_put_failure;
9119         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9120             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9121                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9122                 goto nla_put_failure;
9123         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9124             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9125                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9126                 goto nla_put_failure;
9127         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9128             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9129                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9130                 goto nla_put_failure;
9131
9132         nla_nest_end(msg, infoattr);
9133
9134         genlmsg_end(msg, hdr);
9135         return 0;
9136
9137  nla_put_failure:
9138         genlmsg_cancel(msg, hdr);
9139         return -EMSGSIZE;
9140 }
9141
9142 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9143 {
9144         struct nlattr **attrbuf;
9145         struct survey_info survey;
9146         struct cfg80211_registered_device *rdev;
9147         struct wireless_dev *wdev;
9148         int survey_idx = cb->args[2];
9149         int res;
9150         bool radio_stats;
9151
9152         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9153         if (!attrbuf)
9154                 return -ENOMEM;
9155
9156         rtnl_lock();
9157         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9158         if (res)
9159                 goto out_err;
9160
9161         /* prepare_wdev_dump parsed the attributes */
9162         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9163
9164         if (!wdev->netdev) {
9165                 res = -EINVAL;
9166                 goto out_err;
9167         }
9168
9169         if (!rdev->ops->dump_survey) {
9170                 res = -EOPNOTSUPP;
9171                 goto out_err;
9172         }
9173
9174         while (1) {
9175                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9176                 if (res == -ENOENT)
9177                         break;
9178                 if (res)
9179                         goto out_err;
9180
9181                 /* don't send disabled channels, but do send non-channel data */
9182                 if (survey.channel &&
9183                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9184                         survey_idx++;
9185                         continue;
9186                 }
9187
9188                 if (nl80211_send_survey(skb,
9189                                 NETLINK_CB(cb->skb).portid,
9190                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9191                                 wdev->netdev, radio_stats, &survey) < 0)
9192                         goto out;
9193                 survey_idx++;
9194         }
9195
9196  out:
9197         cb->args[2] = survey_idx;
9198         res = skb->len;
9199  out_err:
9200         kfree(attrbuf);
9201         rtnl_unlock();
9202         return res;
9203 }
9204
9205 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9206 {
9207         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9208                                   NL80211_WPA_VERSION_2 |
9209                                   NL80211_WPA_VERSION_3));
9210 }
9211
9212 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9213 {
9214         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9215         struct net_device *dev = info->user_ptr[1];
9216         struct ieee80211_channel *chan;
9217         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9218         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9219         enum nl80211_auth_type auth_type;
9220         struct key_parse key;
9221         bool local_state_change;
9222         u32 freq;
9223
9224         if (!info->attrs[NL80211_ATTR_MAC])
9225                 return -EINVAL;
9226
9227         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9228                 return -EINVAL;
9229
9230         if (!info->attrs[NL80211_ATTR_SSID])
9231                 return -EINVAL;
9232
9233         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9234                 return -EINVAL;
9235
9236         err = nl80211_parse_key(info, &key);
9237         if (err)
9238                 return err;
9239
9240         if (key.idx >= 0) {
9241                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9242                         return -EINVAL;
9243                 if (!key.p.key || !key.p.key_len)
9244                         return -EINVAL;
9245                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9246                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9247                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9248                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9249                         return -EINVAL;
9250                 if (key.idx > 3)
9251                         return -EINVAL;
9252         } else {
9253                 key.p.key_len = 0;
9254                 key.p.key = NULL;
9255         }
9256
9257         if (key.idx >= 0) {
9258                 int i;
9259                 bool ok = false;
9260
9261                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9262                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9263                                 ok = true;
9264                                 break;
9265                         }
9266                 }
9267                 if (!ok)
9268                         return -EINVAL;
9269         }
9270
9271         if (!rdev->ops->auth)
9272                 return -EOPNOTSUPP;
9273
9274         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9275             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9276                 return -EOPNOTSUPP;
9277
9278         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9279         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9280         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9281                 freq +=
9282                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9283
9284         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9285         if (!chan)
9286                 return -EINVAL;
9287
9288         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9289         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9290
9291         if (info->attrs[NL80211_ATTR_IE]) {
9292                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9293                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9294         }
9295
9296         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9297         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9298                 return -EINVAL;
9299
9300         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9301              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9302              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9303              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9304             !info->attrs[NL80211_ATTR_AUTH_DATA])
9305                 return -EINVAL;
9306
9307         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9308                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9309                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9310                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9311                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9312                         return -EINVAL;
9313                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9314                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9315                 /* need to include at least Auth Transaction and Status Code */
9316                 if (auth_data_len < 4)
9317                         return -EINVAL;
9318         }
9319
9320         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9321
9322         /*
9323          * Since we no longer track auth state, ignore
9324          * requests to only change local state.
9325          */
9326         if (local_state_change)
9327                 return 0;
9328
9329         wdev_lock(dev->ieee80211_ptr);
9330         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9331                                  ssid, ssid_len, ie, ie_len,
9332                                  key.p.key, key.p.key_len, key.idx,
9333                                  auth_data, auth_data_len);
9334         wdev_unlock(dev->ieee80211_ptr);
9335         return err;
9336 }
9337
9338 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9339                                      struct genl_info *info)
9340 {
9341         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9342                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9343                 return -EINVAL;
9344         }
9345
9346         if (!rdev->ops->tx_control_port ||
9347             !wiphy_ext_feature_isset(&rdev->wiphy,
9348                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9349                 return -EOPNOTSUPP;
9350
9351         return 0;
9352 }
9353
9354 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9355                                    struct genl_info *info,
9356                                    struct cfg80211_crypto_settings *settings,
9357                                    int cipher_limit)
9358 {
9359         memset(settings, 0, sizeof(*settings));
9360
9361         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9362
9363         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9364                 u16 proto;
9365
9366                 proto = nla_get_u16(
9367                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9368                 settings->control_port_ethertype = cpu_to_be16(proto);
9369                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9370                     proto != ETH_P_PAE)
9371                         return -EINVAL;
9372                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9373                         settings->control_port_no_encrypt = true;
9374         } else
9375                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9376
9377         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9378                 int r = validate_pae_over_nl80211(rdev, info);
9379
9380                 if (r < 0)
9381                         return r;
9382
9383                 settings->control_port_over_nl80211 = true;
9384
9385                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9386                         settings->control_port_no_preauth = true;
9387         }
9388
9389         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9390                 void *data;
9391                 int len, i;
9392
9393                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9394                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9395                 settings->n_ciphers_pairwise = len / sizeof(u32);
9396
9397                 if (len % sizeof(u32))
9398                         return -EINVAL;
9399
9400                 if (settings->n_ciphers_pairwise > cipher_limit)
9401                         return -EINVAL;
9402
9403                 memcpy(settings->ciphers_pairwise, data, len);
9404
9405                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9406                         if (!cfg80211_supported_cipher_suite(
9407                                         &rdev->wiphy,
9408                                         settings->ciphers_pairwise[i]))
9409                                 return -EINVAL;
9410         }
9411
9412         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9413                 settings->cipher_group =
9414                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9415                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9416                                                      settings->cipher_group))
9417                         return -EINVAL;
9418         }
9419
9420         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9421                 settings->wpa_versions =
9422                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9423                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9424                         return -EINVAL;
9425         }
9426
9427         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9428                 void *data;
9429                 int len;
9430
9431                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9432                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9433                 settings->n_akm_suites = len / sizeof(u32);
9434
9435                 if (len % sizeof(u32))
9436                         return -EINVAL;
9437
9438                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9439                         return -EINVAL;
9440
9441                 memcpy(settings->akm_suites, data, len);
9442         }
9443
9444         if (info->attrs[NL80211_ATTR_PMK]) {
9445                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9446                         return -EINVAL;
9447                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9448                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9449                     !wiphy_ext_feature_isset(&rdev->wiphy,
9450                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9451                         return -EINVAL;
9452                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9453         }
9454
9455         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9456                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9457                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9458                         return -EINVAL;
9459                 settings->sae_pwd =
9460                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9461                 settings->sae_pwd_len =
9462                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9463         }
9464
9465         return 0;
9466 }
9467
9468 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9469 {
9470         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9471         struct net_device *dev = info->user_ptr[1];
9472         struct ieee80211_channel *chan;
9473         struct cfg80211_assoc_request req = {};
9474         const u8 *bssid, *ssid;
9475         int err, ssid_len = 0;
9476         u32 freq;
9477
9478         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9479             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9480                 return -EPERM;
9481
9482         if (!info->attrs[NL80211_ATTR_MAC] ||
9483             !info->attrs[NL80211_ATTR_SSID] ||
9484             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9485                 return -EINVAL;
9486
9487         if (!rdev->ops->assoc)
9488                 return -EOPNOTSUPP;
9489
9490         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9491             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9492                 return -EOPNOTSUPP;
9493
9494         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9495
9496         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9497         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9498                 freq +=
9499                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9500         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9501         if (!chan)
9502                 return -EINVAL;
9503
9504         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9505         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9506
9507         if (info->attrs[NL80211_ATTR_IE]) {
9508                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9509                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9510         }
9511
9512         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9513                 enum nl80211_mfp mfp =
9514                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9515                 if (mfp == NL80211_MFP_REQUIRED)
9516                         req.use_mfp = true;
9517                 else if (mfp != NL80211_MFP_NO)
9518                         return -EINVAL;
9519         }
9520
9521         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9522                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9523
9524         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9525                 req.flags |= ASSOC_REQ_DISABLE_HT;
9526
9527         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9528                 memcpy(&req.ht_capa_mask,
9529                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9530                        sizeof(req.ht_capa_mask));
9531
9532         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9533                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9534                         return -EINVAL;
9535                 memcpy(&req.ht_capa,
9536                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9537                        sizeof(req.ht_capa));
9538         }
9539
9540         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9541                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9542
9543         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9544                 memcpy(&req.vht_capa_mask,
9545                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9546                        sizeof(req.vht_capa_mask));
9547
9548         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9549                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9550                         return -EINVAL;
9551                 memcpy(&req.vht_capa,
9552                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9553                        sizeof(req.vht_capa));
9554         }
9555
9556         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9557                 if (!((rdev->wiphy.features &
9558                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9559                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9560                     !wiphy_ext_feature_isset(&rdev->wiphy,
9561                                              NL80211_EXT_FEATURE_RRM))
9562                         return -EINVAL;
9563                 req.flags |= ASSOC_REQ_USE_RRM;
9564         }
9565
9566         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9567                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9568                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9569                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9570                         return -EINVAL;
9571                 req.fils_nonces =
9572                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9573         }
9574
9575         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9576         if (!err) {
9577                 wdev_lock(dev->ieee80211_ptr);
9578
9579                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9580                                           ssid, ssid_len, &req);
9581
9582                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9583                         dev->ieee80211_ptr->conn_owner_nlportid =
9584                                 info->snd_portid;
9585                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9586                                bssid, ETH_ALEN);
9587                 }
9588
9589                 wdev_unlock(dev->ieee80211_ptr);
9590         }
9591
9592         return err;
9593 }
9594
9595 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9596 {
9597         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9598         struct net_device *dev = info->user_ptr[1];
9599         const u8 *ie = NULL, *bssid;
9600         int ie_len = 0, err;
9601         u16 reason_code;
9602         bool local_state_change;
9603
9604         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9605             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9606                 return -EPERM;
9607
9608         if (!info->attrs[NL80211_ATTR_MAC])
9609                 return -EINVAL;
9610
9611         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9612                 return -EINVAL;
9613
9614         if (!rdev->ops->deauth)
9615                 return -EOPNOTSUPP;
9616
9617         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9618             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9619                 return -EOPNOTSUPP;
9620
9621         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9622
9623         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9624         if (reason_code == 0) {
9625                 /* Reason Code 0 is reserved */
9626                 return -EINVAL;
9627         }
9628
9629         if (info->attrs[NL80211_ATTR_IE]) {
9630                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9631                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9632         }
9633
9634         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9635
9636         wdev_lock(dev->ieee80211_ptr);
9637         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9638                                    local_state_change);
9639         wdev_unlock(dev->ieee80211_ptr);
9640         return err;
9641 }
9642
9643 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9644 {
9645         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9646         struct net_device *dev = info->user_ptr[1];
9647         const u8 *ie = NULL, *bssid;
9648         int ie_len = 0, err;
9649         u16 reason_code;
9650         bool local_state_change;
9651
9652         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9653             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9654                 return -EPERM;
9655
9656         if (!info->attrs[NL80211_ATTR_MAC])
9657                 return -EINVAL;
9658
9659         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9660                 return -EINVAL;
9661
9662         if (!rdev->ops->disassoc)
9663                 return -EOPNOTSUPP;
9664
9665         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9666             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9667                 return -EOPNOTSUPP;
9668
9669         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9670
9671         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9672         if (reason_code == 0) {
9673                 /* Reason Code 0 is reserved */
9674                 return -EINVAL;
9675         }
9676
9677         if (info->attrs[NL80211_ATTR_IE]) {
9678                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9679                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9680         }
9681
9682         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9683
9684         wdev_lock(dev->ieee80211_ptr);
9685         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9686                                      local_state_change);
9687         wdev_unlock(dev->ieee80211_ptr);
9688         return err;
9689 }
9690
9691 static bool
9692 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9693                          int mcast_rate[NUM_NL80211_BANDS],
9694                          int rateval)
9695 {
9696         struct wiphy *wiphy = &rdev->wiphy;
9697         bool found = false;
9698         int band, i;
9699
9700         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9701                 struct ieee80211_supported_band *sband;
9702
9703                 sband = wiphy->bands[band];
9704                 if (!sband)
9705                         continue;
9706
9707                 for (i = 0; i < sband->n_bitrates; i++) {
9708                         if (sband->bitrates[i].bitrate == rateval) {
9709                                 mcast_rate[band] = i + 1;
9710                                 found = true;
9711                                 break;
9712                         }
9713                 }
9714         }
9715
9716         return found;
9717 }
9718
9719 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9720 {
9721         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9722         struct net_device *dev = info->user_ptr[1];
9723         struct cfg80211_ibss_params ibss;
9724         struct wiphy *wiphy;
9725         struct cfg80211_cached_keys *connkeys = NULL;
9726         int err;
9727
9728         memset(&ibss, 0, sizeof(ibss));
9729
9730         if (!info->attrs[NL80211_ATTR_SSID] ||
9731             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9732                 return -EINVAL;
9733
9734         ibss.beacon_interval = 100;
9735
9736         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9737                 ibss.beacon_interval =
9738                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9739
9740         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9741                                            ibss.beacon_interval);
9742         if (err)
9743                 return err;
9744
9745         if (!rdev->ops->join_ibss)
9746                 return -EOPNOTSUPP;
9747
9748         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9749                 return -EOPNOTSUPP;
9750
9751         wiphy = &rdev->wiphy;
9752
9753         if (info->attrs[NL80211_ATTR_MAC]) {
9754                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9755
9756                 if (!is_valid_ether_addr(ibss.bssid))
9757                         return -EINVAL;
9758         }
9759         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9760         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9761
9762         if (info->attrs[NL80211_ATTR_IE]) {
9763                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9764                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9765         }
9766
9767         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9768         if (err)
9769                 return err;
9770
9771         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9772                                      NL80211_IFTYPE_ADHOC))
9773                 return -EINVAL;
9774
9775         switch (ibss.chandef.width) {
9776         case NL80211_CHAN_WIDTH_5:
9777         case NL80211_CHAN_WIDTH_10:
9778         case NL80211_CHAN_WIDTH_20_NOHT:
9779                 break;
9780         case NL80211_CHAN_WIDTH_20:
9781         case NL80211_CHAN_WIDTH_40:
9782                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9783                         return -EINVAL;
9784                 break;
9785         case NL80211_CHAN_WIDTH_80:
9786         case NL80211_CHAN_WIDTH_80P80:
9787         case NL80211_CHAN_WIDTH_160:
9788                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9789                         return -EINVAL;
9790                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9791                                              NL80211_EXT_FEATURE_VHT_IBSS))
9792                         return -EINVAL;
9793                 break;
9794         default:
9795                 return -EINVAL;
9796         }
9797
9798         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9799         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9800
9801         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9802                 u8 *rates =
9803                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9804                 int n_rates =
9805                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9806                 struct ieee80211_supported_band *sband =
9807                         wiphy->bands[ibss.chandef.chan->band];
9808
9809                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9810                                              &ibss.basic_rates);
9811                 if (err)
9812                         return err;
9813         }
9814
9815         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9816                 memcpy(&ibss.ht_capa_mask,
9817                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9818                        sizeof(ibss.ht_capa_mask));
9819
9820         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9821                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9822                         return -EINVAL;
9823                 memcpy(&ibss.ht_capa,
9824                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9825                        sizeof(ibss.ht_capa));
9826         }
9827
9828         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9829             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9830                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9831                 return -EINVAL;
9832
9833         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9834                 bool no_ht = false;
9835
9836                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9837                 if (IS_ERR(connkeys))
9838                         return PTR_ERR(connkeys);
9839
9840                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9841                     no_ht) {
9842                         kfree_sensitive(connkeys);
9843                         return -EINVAL;
9844                 }
9845         }
9846
9847         ibss.control_port =
9848                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9849
9850         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9851                 int r = validate_pae_over_nl80211(rdev, info);
9852
9853                 if (r < 0) {
9854                         kfree_sensitive(connkeys);
9855                         return r;
9856                 }
9857
9858                 ibss.control_port_over_nl80211 = true;
9859         }
9860
9861         ibss.userspace_handles_dfs =
9862                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9863
9864         wdev_lock(dev->ieee80211_ptr);
9865         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9866         if (err)
9867                 kfree_sensitive(connkeys);
9868         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9869                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9870         wdev_unlock(dev->ieee80211_ptr);
9871
9872         return err;
9873 }
9874
9875 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9876 {
9877         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9878         struct net_device *dev = info->user_ptr[1];
9879
9880         if (!rdev->ops->leave_ibss)
9881                 return -EOPNOTSUPP;
9882
9883         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9884                 return -EOPNOTSUPP;
9885
9886         return cfg80211_leave_ibss(rdev, dev, false);
9887 }
9888
9889 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9890 {
9891         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9892         struct net_device *dev = info->user_ptr[1];
9893         int mcast_rate[NUM_NL80211_BANDS];
9894         u32 nla_rate;
9895         int err;
9896
9897         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9898             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9899             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9900                 return -EOPNOTSUPP;
9901
9902         if (!rdev->ops->set_mcast_rate)
9903                 return -EOPNOTSUPP;
9904
9905         memset(mcast_rate, 0, sizeof(mcast_rate));
9906
9907         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9908                 return -EINVAL;
9909
9910         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9911         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9912                 return -EINVAL;
9913
9914         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9915
9916         return err;
9917 }
9918
9919 static struct sk_buff *
9920 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9921                             struct wireless_dev *wdev, int approxlen,
9922                             u32 portid, u32 seq, enum nl80211_commands cmd,
9923                             enum nl80211_attrs attr,
9924                             const struct nl80211_vendor_cmd_info *info,
9925                             gfp_t gfp)
9926 {
9927         struct sk_buff *skb;
9928         void *hdr;
9929         struct nlattr *data;
9930
9931         skb = nlmsg_new(approxlen + 100, gfp);
9932         if (!skb)
9933                 return NULL;
9934
9935         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9936         if (!hdr) {
9937                 kfree_skb(skb);
9938                 return NULL;
9939         }
9940
9941         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9942                 goto nla_put_failure;
9943
9944         if (info) {
9945                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9946                                 info->vendor_id))
9947                         goto nla_put_failure;
9948                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9949                                 info->subcmd))
9950                         goto nla_put_failure;
9951         }
9952
9953         if (wdev) {
9954                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9955                                       wdev_id(wdev), NL80211_ATTR_PAD))
9956                         goto nla_put_failure;
9957                 if (wdev->netdev &&
9958                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9959                                 wdev->netdev->ifindex))
9960                         goto nla_put_failure;
9961         }
9962
9963         data = nla_nest_start_noflag(skb, attr);
9964         if (!data)
9965                 goto nla_put_failure;
9966
9967         ((void **)skb->cb)[0] = rdev;
9968         ((void **)skb->cb)[1] = hdr;
9969         ((void **)skb->cb)[2] = data;
9970
9971         return skb;
9972
9973  nla_put_failure:
9974         kfree_skb(skb);
9975         return NULL;
9976 }
9977
9978 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9979                                            struct wireless_dev *wdev,
9980                                            enum nl80211_commands cmd,
9981                                            enum nl80211_attrs attr,
9982                                            unsigned int portid,
9983                                            int vendor_event_idx,
9984                                            int approxlen, gfp_t gfp)
9985 {
9986         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9987         const struct nl80211_vendor_cmd_info *info;
9988
9989         switch (cmd) {
9990         case NL80211_CMD_TESTMODE:
9991                 if (WARN_ON(vendor_event_idx != -1))
9992                         return NULL;
9993                 info = NULL;
9994                 break;
9995         case NL80211_CMD_VENDOR:
9996                 if (WARN_ON(vendor_event_idx < 0 ||
9997                             vendor_event_idx >= wiphy->n_vendor_events))
9998                         return NULL;
9999                 info = &wiphy->vendor_events[vendor_event_idx];
10000                 break;
10001         default:
10002                 WARN_ON(1);
10003                 return NULL;
10004         }
10005
10006         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10007                                            cmd, attr, info, gfp);
10008 }
10009 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10010
10011 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10012 {
10013         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10014         void *hdr = ((void **)skb->cb)[1];
10015         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10016         struct nlattr *data = ((void **)skb->cb)[2];
10017         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10018
10019         /* clear CB data for netlink core to own from now on */
10020         memset(skb->cb, 0, sizeof(skb->cb));
10021
10022         nla_nest_end(skb, data);
10023         genlmsg_end(skb, hdr);
10024
10025         if (nlhdr->nlmsg_pid) {
10026                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10027                                 nlhdr->nlmsg_pid);
10028         } else {
10029                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10030                         mcgrp = NL80211_MCGRP_VENDOR;
10031
10032                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10033                                         skb, 0, mcgrp, gfp);
10034         }
10035 }
10036 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10037
10038 #ifdef CONFIG_NL80211_TESTMODE
10039 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10040 {
10041         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10042         struct wireless_dev *wdev =
10043                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10044         int err;
10045
10046         if (!rdev->ops->testmode_cmd)
10047                 return -EOPNOTSUPP;
10048
10049         if (IS_ERR(wdev)) {
10050                 err = PTR_ERR(wdev);
10051                 if (err != -EINVAL)
10052                         return err;
10053                 wdev = NULL;
10054         } else if (wdev->wiphy != &rdev->wiphy) {
10055                 return -EINVAL;
10056         }
10057
10058         if (!info->attrs[NL80211_ATTR_TESTDATA])
10059                 return -EINVAL;
10060
10061         rdev->cur_cmd_info = info;
10062         err = rdev_testmode_cmd(rdev, wdev,
10063                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10064                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10065         rdev->cur_cmd_info = NULL;
10066
10067         return err;
10068 }
10069
10070 static int nl80211_testmode_dump(struct sk_buff *skb,
10071                                  struct netlink_callback *cb)
10072 {
10073         struct cfg80211_registered_device *rdev;
10074         struct nlattr **attrbuf = NULL;
10075         int err;
10076         long phy_idx;
10077         void *data = NULL;
10078         int data_len = 0;
10079
10080         rtnl_lock();
10081
10082         if (cb->args[0]) {
10083                 /*
10084                  * 0 is a valid index, but not valid for args[0],
10085                  * so we need to offset by 1.
10086                  */
10087                 phy_idx = cb->args[0] - 1;
10088
10089                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10090                 if (!rdev) {
10091                         err = -ENOENT;
10092                         goto out_err;
10093                 }
10094         } else {
10095                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10096                                   GFP_KERNEL);
10097                 if (!attrbuf) {
10098                         err = -ENOMEM;
10099                         goto out_err;
10100                 }
10101
10102                 err = nlmsg_parse_deprecated(cb->nlh,
10103                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10104                                              attrbuf, nl80211_fam.maxattr,
10105                                              nl80211_policy, NULL);
10106                 if (err)
10107                         goto out_err;
10108
10109                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10110                 if (IS_ERR(rdev)) {
10111                         err = PTR_ERR(rdev);
10112                         goto out_err;
10113                 }
10114                 phy_idx = rdev->wiphy_idx;
10115
10116                 if (attrbuf[NL80211_ATTR_TESTDATA])
10117                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10118         }
10119
10120         if (cb->args[1]) {
10121                 data = nla_data((void *)cb->args[1]);
10122                 data_len = nla_len((void *)cb->args[1]);
10123         }
10124
10125         if (!rdev->ops->testmode_dump) {
10126                 err = -EOPNOTSUPP;
10127                 goto out_err;
10128         }
10129
10130         while (1) {
10131                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10132                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10133                                            NL80211_CMD_TESTMODE);
10134                 struct nlattr *tmdata;
10135
10136                 if (!hdr)
10137                         break;
10138
10139                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10140                         genlmsg_cancel(skb, hdr);
10141                         break;
10142                 }
10143
10144                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10145                 if (!tmdata) {
10146                         genlmsg_cancel(skb, hdr);
10147                         break;
10148                 }
10149                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10150                 nla_nest_end(skb, tmdata);
10151
10152                 if (err == -ENOBUFS || err == -ENOENT) {
10153                         genlmsg_cancel(skb, hdr);
10154                         break;
10155                 } else if (err) {
10156                         genlmsg_cancel(skb, hdr);
10157                         goto out_err;
10158                 }
10159
10160                 genlmsg_end(skb, hdr);
10161         }
10162
10163         err = skb->len;
10164         /* see above */
10165         cb->args[0] = phy_idx + 1;
10166  out_err:
10167         kfree(attrbuf);
10168         rtnl_unlock();
10169         return err;
10170 }
10171 #endif
10172
10173 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10174 {
10175         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10176         struct net_device *dev = info->user_ptr[1];
10177         struct cfg80211_connect_params connect;
10178         struct wiphy *wiphy;
10179         struct cfg80211_cached_keys *connkeys = NULL;
10180         u32 freq = 0;
10181         int err;
10182
10183         memset(&connect, 0, sizeof(connect));
10184
10185         if (!info->attrs[NL80211_ATTR_SSID] ||
10186             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10187                 return -EINVAL;
10188
10189         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10190                 connect.auth_type =
10191                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10192                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10193                                              NL80211_CMD_CONNECT))
10194                         return -EINVAL;
10195         } else
10196                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10197
10198         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10199
10200         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10201             !wiphy_ext_feature_isset(&rdev->wiphy,
10202                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10203                 return -EINVAL;
10204         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10205
10206         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10207                                       NL80211_MAX_NR_CIPHER_SUITES);
10208         if (err)
10209                 return err;
10210
10211         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10212             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10213                 return -EOPNOTSUPP;
10214
10215         wiphy = &rdev->wiphy;
10216
10217         connect.bg_scan_period = -1;
10218         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10219                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10220                 connect.bg_scan_period =
10221                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10222         }
10223
10224         if (info->attrs[NL80211_ATTR_MAC])
10225                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10226         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10227                 connect.bssid_hint =
10228                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10229         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10230         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10231
10232         if (info->attrs[NL80211_ATTR_IE]) {
10233                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10234                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10235         }
10236
10237         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10238                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10239                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10240                     !wiphy_ext_feature_isset(&rdev->wiphy,
10241                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10242                         return -EOPNOTSUPP;
10243         } else {
10244                 connect.mfp = NL80211_MFP_NO;
10245         }
10246
10247         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10248                 connect.prev_bssid =
10249                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10250
10251         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10252                 freq = MHZ_TO_KHZ(nla_get_u32(
10253                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10254         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10255                 freq +=
10256                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10257
10258         if (freq) {
10259                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10260                 if (!connect.channel)
10261                         return -EINVAL;
10262         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10263                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10264                 freq = MHZ_TO_KHZ(freq);
10265                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10266                 if (!connect.channel_hint)
10267                         return -EINVAL;
10268         }
10269
10270         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10271                 connect.edmg.channels =
10272                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10273
10274                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10275                         connect.edmg.bw_config =
10276                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10277         }
10278
10279         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10280                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10281                 if (IS_ERR(connkeys))
10282                         return PTR_ERR(connkeys);
10283         }
10284
10285         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10286                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10287
10288         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10289                 memcpy(&connect.ht_capa_mask,
10290                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10291                        sizeof(connect.ht_capa_mask));
10292
10293         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10294                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10295                         kfree_sensitive(connkeys);
10296                         return -EINVAL;
10297                 }
10298                 memcpy(&connect.ht_capa,
10299                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10300                        sizeof(connect.ht_capa));
10301         }
10302
10303         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10304                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10305
10306         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10307                 memcpy(&connect.vht_capa_mask,
10308                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10309                        sizeof(connect.vht_capa_mask));
10310
10311         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10312                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10313                         kfree_sensitive(connkeys);
10314                         return -EINVAL;
10315                 }
10316                 memcpy(&connect.vht_capa,
10317                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10318                        sizeof(connect.vht_capa));
10319         }
10320
10321         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10322                 if (!((rdev->wiphy.features &
10323                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10324                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10325                     !wiphy_ext_feature_isset(&rdev->wiphy,
10326                                              NL80211_EXT_FEATURE_RRM)) {
10327                         kfree_sensitive(connkeys);
10328                         return -EINVAL;
10329                 }
10330                 connect.flags |= ASSOC_REQ_USE_RRM;
10331         }
10332
10333         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10334         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10335                 kfree_sensitive(connkeys);
10336                 return -EOPNOTSUPP;
10337         }
10338
10339         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10340                 /* bss selection makes no sense if bssid is set */
10341                 if (connect.bssid) {
10342                         kfree_sensitive(connkeys);
10343                         return -EINVAL;
10344                 }
10345
10346                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10347                                        wiphy, &connect.bss_select);
10348                 if (err) {
10349                         kfree_sensitive(connkeys);
10350                         return err;
10351                 }
10352         }
10353
10354         if (wiphy_ext_feature_isset(&rdev->wiphy,
10355                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10356             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10357             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10358             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10359             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10360                 connect.fils_erp_username =
10361                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10362                 connect.fils_erp_username_len =
10363                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10364                 connect.fils_erp_realm =
10365                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10366                 connect.fils_erp_realm_len =
10367                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10368                 connect.fils_erp_next_seq_num =
10369                         nla_get_u16(
10370                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10371                 connect.fils_erp_rrk =
10372                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10373                 connect.fils_erp_rrk_len =
10374                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10375         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10376                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10377                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10378                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10379                 kfree_sensitive(connkeys);
10380                 return -EINVAL;
10381         }
10382
10383         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10384                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10385                         kfree_sensitive(connkeys);
10386                         GENL_SET_ERR_MSG(info,
10387                                          "external auth requires connection ownership");
10388                         return -EINVAL;
10389                 }
10390                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10391         }
10392
10393         wdev_lock(dev->ieee80211_ptr);
10394
10395         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10396                                connect.prev_bssid);
10397         if (err)
10398                 kfree_sensitive(connkeys);
10399
10400         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10401                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10402                 if (connect.bssid)
10403                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10404                                connect.bssid, ETH_ALEN);
10405                 else
10406                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10407         }
10408
10409         wdev_unlock(dev->ieee80211_ptr);
10410
10411         return err;
10412 }
10413
10414 static int nl80211_update_connect_params(struct sk_buff *skb,
10415                                          struct genl_info *info)
10416 {
10417         struct cfg80211_connect_params connect = {};
10418         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10419         struct net_device *dev = info->user_ptr[1];
10420         struct wireless_dev *wdev = dev->ieee80211_ptr;
10421         bool fils_sk_offload;
10422         u32 auth_type;
10423         u32 changed = 0;
10424         int ret;
10425
10426         if (!rdev->ops->update_connect_params)
10427                 return -EOPNOTSUPP;
10428
10429         if (info->attrs[NL80211_ATTR_IE]) {
10430                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10431                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10432                 changed |= UPDATE_ASSOC_IES;
10433         }
10434
10435         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10436                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10437
10438         /*
10439          * when driver supports fils-sk offload all attributes must be
10440          * provided. So the else covers "fils-sk-not-all" and
10441          * "no-fils-sk-any".
10442          */
10443         if (fils_sk_offload &&
10444             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10445             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10446             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10447             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10448                 connect.fils_erp_username =
10449                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10450                 connect.fils_erp_username_len =
10451                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10452                 connect.fils_erp_realm =
10453                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10454                 connect.fils_erp_realm_len =
10455                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10456                 connect.fils_erp_next_seq_num =
10457                         nla_get_u16(
10458                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10459                 connect.fils_erp_rrk =
10460                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10461                 connect.fils_erp_rrk_len =
10462                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10463                 changed |= UPDATE_FILS_ERP_INFO;
10464         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10465                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10466                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10467                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10468                 return -EINVAL;
10469         }
10470
10471         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10472                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10473                 if (!nl80211_valid_auth_type(rdev, auth_type,
10474                                              NL80211_CMD_CONNECT))
10475                         return -EINVAL;
10476
10477                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10478                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10479                         return -EINVAL;
10480
10481                 connect.auth_type = auth_type;
10482                 changed |= UPDATE_AUTH_TYPE;
10483         }
10484
10485         wdev_lock(dev->ieee80211_ptr);
10486         if (!wdev->current_bss)
10487                 ret = -ENOLINK;
10488         else
10489                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10490         wdev_unlock(dev->ieee80211_ptr);
10491
10492         return ret;
10493 }
10494
10495 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10496 {
10497         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10498         struct net_device *dev = info->user_ptr[1];
10499         u16 reason;
10500         int ret;
10501
10502         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10503             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10504                 return -EPERM;
10505
10506         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10507                 reason = WLAN_REASON_DEAUTH_LEAVING;
10508         else
10509                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10510
10511         if (reason == 0)
10512                 return -EINVAL;
10513
10514         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10515             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10516                 return -EOPNOTSUPP;
10517
10518         wdev_lock(dev->ieee80211_ptr);
10519         ret = cfg80211_disconnect(rdev, dev, reason, true);
10520         wdev_unlock(dev->ieee80211_ptr);
10521         return ret;
10522 }
10523
10524 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10525 {
10526         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10527         struct net *net;
10528         int err;
10529
10530         if (info->attrs[NL80211_ATTR_PID]) {
10531                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10532
10533                 net = get_net_ns_by_pid(pid);
10534         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10535                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10536
10537                 net = get_net_ns_by_fd(fd);
10538         } else {
10539                 return -EINVAL;
10540         }
10541
10542         if (IS_ERR(net))
10543                 return PTR_ERR(net);
10544
10545         err = 0;
10546
10547         /* check if anything to do */
10548         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10549                 err = cfg80211_switch_netns(rdev, net);
10550
10551         put_net(net);
10552         return err;
10553 }
10554
10555 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10556 {
10557         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10558         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10559                         struct cfg80211_pmksa *pmksa) = NULL;
10560         struct net_device *dev = info->user_ptr[1];
10561         struct cfg80211_pmksa pmksa;
10562
10563         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10564
10565         if (!info->attrs[NL80211_ATTR_PMKID])
10566                 return -EINVAL;
10567
10568         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10569
10570         if (info->attrs[NL80211_ATTR_MAC]) {
10571                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10572         } else if (info->attrs[NL80211_ATTR_SSID] &&
10573                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10574                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10575                     info->attrs[NL80211_ATTR_PMK])) {
10576                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10577                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10578                 pmksa.cache_id =
10579                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10580         } else {
10581                 return -EINVAL;
10582         }
10583         if (info->attrs[NL80211_ATTR_PMK]) {
10584                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10585                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10586         }
10587
10588         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10589                 pmksa.pmk_lifetime =
10590                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10591
10592         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10593                 pmksa.pmk_reauth_threshold =
10594                         nla_get_u8(
10595                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10596
10597         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10598             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10599             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10600               wiphy_ext_feature_isset(&rdev->wiphy,
10601                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10602                 return -EOPNOTSUPP;
10603
10604         switch (info->genlhdr->cmd) {
10605         case NL80211_CMD_SET_PMKSA:
10606                 rdev_ops = rdev->ops->set_pmksa;
10607                 break;
10608         case NL80211_CMD_DEL_PMKSA:
10609                 rdev_ops = rdev->ops->del_pmksa;
10610                 break;
10611         default:
10612                 WARN_ON(1);
10613                 break;
10614         }
10615
10616         if (!rdev_ops)
10617                 return -EOPNOTSUPP;
10618
10619         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10620 }
10621
10622 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10623 {
10624         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10625         struct net_device *dev = info->user_ptr[1];
10626
10627         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10628             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10629                 return -EOPNOTSUPP;
10630
10631         if (!rdev->ops->flush_pmksa)
10632                 return -EOPNOTSUPP;
10633
10634         return rdev_flush_pmksa(rdev, dev);
10635 }
10636
10637 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10638 {
10639         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10640         struct net_device *dev = info->user_ptr[1];
10641         u8 action_code, dialog_token;
10642         u32 peer_capability = 0;
10643         u16 status_code;
10644         u8 *peer;
10645         bool initiator;
10646
10647         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10648             !rdev->ops->tdls_mgmt)
10649                 return -EOPNOTSUPP;
10650
10651         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10652             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10653             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10654             !info->attrs[NL80211_ATTR_IE] ||
10655             !info->attrs[NL80211_ATTR_MAC])
10656                 return -EINVAL;
10657
10658         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10659         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10660         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10661         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10662         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10663         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10664                 peer_capability =
10665                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10666
10667         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10668                               dialog_token, status_code, peer_capability,
10669                               initiator,
10670                               nla_data(info->attrs[NL80211_ATTR_IE]),
10671                               nla_len(info->attrs[NL80211_ATTR_IE]));
10672 }
10673
10674 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10675 {
10676         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10677         struct net_device *dev = info->user_ptr[1];
10678         enum nl80211_tdls_operation operation;
10679         u8 *peer;
10680
10681         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10682             !rdev->ops->tdls_oper)
10683                 return -EOPNOTSUPP;
10684
10685         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10686             !info->attrs[NL80211_ATTR_MAC])
10687                 return -EINVAL;
10688
10689         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10690         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10691
10692         return rdev_tdls_oper(rdev, dev, peer, operation);
10693 }
10694
10695 static int nl80211_remain_on_channel(struct sk_buff *skb,
10696                                      struct genl_info *info)
10697 {
10698         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10699         struct wireless_dev *wdev = info->user_ptr[1];
10700         struct cfg80211_chan_def chandef;
10701         const struct cfg80211_chan_def *compat_chandef;
10702         struct sk_buff *msg;
10703         void *hdr;
10704         u64 cookie;
10705         u32 duration;
10706         int err;
10707
10708         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10709             !info->attrs[NL80211_ATTR_DURATION])
10710                 return -EINVAL;
10711
10712         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10713
10714         if (!rdev->ops->remain_on_channel ||
10715             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10716                 return -EOPNOTSUPP;
10717
10718         /*
10719          * We should be on that channel for at least a minimum amount of
10720          * time (10ms) but no longer than the driver supports.
10721          */
10722         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10723             duration > rdev->wiphy.max_remain_on_channel_duration)
10724                 return -EINVAL;
10725
10726         err = nl80211_parse_chandef(rdev, info, &chandef);
10727         if (err)
10728                 return err;
10729
10730         wdev_lock(wdev);
10731         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10732             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10733                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10734                                                              &chandef);
10735                 if (compat_chandef != &chandef) {
10736                         wdev_unlock(wdev);
10737                         return -EBUSY;
10738                 }
10739         }
10740         wdev_unlock(wdev);
10741
10742         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10743         if (!msg)
10744                 return -ENOMEM;
10745
10746         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10747                              NL80211_CMD_REMAIN_ON_CHANNEL);
10748         if (!hdr) {
10749                 err = -ENOBUFS;
10750                 goto free_msg;
10751         }
10752
10753         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10754                                      duration, &cookie);
10755
10756         if (err)
10757                 goto free_msg;
10758
10759         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10760                               NL80211_ATTR_PAD))
10761                 goto nla_put_failure;
10762
10763         genlmsg_end(msg, hdr);
10764
10765         return genlmsg_reply(msg, info);
10766
10767  nla_put_failure:
10768         err = -ENOBUFS;
10769  free_msg:
10770         nlmsg_free(msg);
10771         return err;
10772 }
10773
10774 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10775                                             struct genl_info *info)
10776 {
10777         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10778         struct wireless_dev *wdev = info->user_ptr[1];
10779         u64 cookie;
10780
10781         if (!info->attrs[NL80211_ATTR_COOKIE])
10782                 return -EINVAL;
10783
10784         if (!rdev->ops->cancel_remain_on_channel)
10785                 return -EOPNOTSUPP;
10786
10787         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10788
10789         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10790 }
10791
10792 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10793                                        struct genl_info *info)
10794 {
10795         struct cfg80211_bitrate_mask mask;
10796         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10797         struct net_device *dev = info->user_ptr[1];
10798         int err;
10799
10800         if (!rdev->ops->set_bitrate_mask)
10801                 return -EOPNOTSUPP;
10802
10803         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
10804                                             NL80211_ATTR_TX_RATES, &mask);
10805         if (err)
10806                 return err;
10807
10808         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10809 }
10810
10811 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10812 {
10813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10814         struct wireless_dev *wdev = info->user_ptr[1];
10815         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10816
10817         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10818                 return -EINVAL;
10819
10820         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10821                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10822
10823         switch (wdev->iftype) {
10824         case NL80211_IFTYPE_STATION:
10825         case NL80211_IFTYPE_ADHOC:
10826         case NL80211_IFTYPE_P2P_CLIENT:
10827         case NL80211_IFTYPE_AP:
10828         case NL80211_IFTYPE_AP_VLAN:
10829         case NL80211_IFTYPE_MESH_POINT:
10830         case NL80211_IFTYPE_P2P_GO:
10831         case NL80211_IFTYPE_P2P_DEVICE:
10832                 break;
10833         case NL80211_IFTYPE_NAN:
10834         default:
10835                 return -EOPNOTSUPP;
10836         }
10837
10838         /* not much point in registering if we can't reply */
10839         if (!rdev->ops->mgmt_tx)
10840                 return -EOPNOTSUPP;
10841
10842         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
10843             !wiphy_ext_feature_isset(&rdev->wiphy,
10844                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
10845                 GENL_SET_ERR_MSG(info,
10846                                  "multicast RX registrations are not supported");
10847                 return -EOPNOTSUPP;
10848         }
10849
10850         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10851                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10852                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10853                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
10854                                            info->extack);
10855 }
10856
10857 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10858 {
10859         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10860         struct wireless_dev *wdev = info->user_ptr[1];
10861         struct cfg80211_chan_def chandef;
10862         int err;
10863         void *hdr = NULL;
10864         u64 cookie;
10865         struct sk_buff *msg = NULL;
10866         struct cfg80211_mgmt_tx_params params = {
10867                 .dont_wait_for_ack =
10868                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10869         };
10870
10871         if (!info->attrs[NL80211_ATTR_FRAME])
10872                 return -EINVAL;
10873
10874         if (!rdev->ops->mgmt_tx)
10875                 return -EOPNOTSUPP;
10876
10877         switch (wdev->iftype) {
10878         case NL80211_IFTYPE_P2P_DEVICE:
10879                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10880                         return -EINVAL;
10881         case NL80211_IFTYPE_STATION:
10882         case NL80211_IFTYPE_ADHOC:
10883         case NL80211_IFTYPE_P2P_CLIENT:
10884         case NL80211_IFTYPE_AP:
10885         case NL80211_IFTYPE_AP_VLAN:
10886         case NL80211_IFTYPE_MESH_POINT:
10887         case NL80211_IFTYPE_P2P_GO:
10888                 break;
10889         case NL80211_IFTYPE_NAN:
10890         default:
10891                 return -EOPNOTSUPP;
10892         }
10893
10894         if (info->attrs[NL80211_ATTR_DURATION]) {
10895                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10896                         return -EINVAL;
10897                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10898
10899                 /*
10900                  * We should wait on the channel for at least a minimum amount
10901                  * of time (10ms) but no longer than the driver supports.
10902                  */
10903                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10904                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10905                         return -EINVAL;
10906         }
10907
10908         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10909
10910         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10911                 return -EINVAL;
10912
10913         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10914
10915         /* get the channel if any has been specified, otherwise pass NULL to
10916          * the driver. The latter will use the current one
10917          */
10918         chandef.chan = NULL;
10919         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10920                 err = nl80211_parse_chandef(rdev, info, &chandef);
10921                 if (err)
10922                         return err;
10923         }
10924
10925         if (!chandef.chan && params.offchan)
10926                 return -EINVAL;
10927
10928         wdev_lock(wdev);
10929         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10930                 wdev_unlock(wdev);
10931                 return -EBUSY;
10932         }
10933         wdev_unlock(wdev);
10934
10935         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10936         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10937
10938         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10939                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10940                 int i;
10941
10942                 if (len % sizeof(u16))
10943                         return -EINVAL;
10944
10945                 params.n_csa_offsets = len / sizeof(u16);
10946                 params.csa_offsets =
10947                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10948
10949                 /* check that all the offsets fit the frame */
10950                 for (i = 0; i < params.n_csa_offsets; i++) {
10951                         if (params.csa_offsets[i] >= params.len)
10952                                 return -EINVAL;
10953                 }
10954         }
10955
10956         if (!params.dont_wait_for_ack) {
10957                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10958                 if (!msg)
10959                         return -ENOMEM;
10960
10961                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10962                                      NL80211_CMD_FRAME);
10963                 if (!hdr) {
10964                         err = -ENOBUFS;
10965                         goto free_msg;
10966                 }
10967         }
10968
10969         params.chan = chandef.chan;
10970         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10971         if (err)
10972                 goto free_msg;
10973
10974         if (msg) {
10975                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10976                                       NL80211_ATTR_PAD))
10977                         goto nla_put_failure;
10978
10979                 genlmsg_end(msg, hdr);
10980                 return genlmsg_reply(msg, info);
10981         }
10982
10983         return 0;
10984
10985  nla_put_failure:
10986         err = -ENOBUFS;
10987  free_msg:
10988         nlmsg_free(msg);
10989         return err;
10990 }
10991
10992 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10993 {
10994         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10995         struct wireless_dev *wdev = info->user_ptr[1];
10996         u64 cookie;
10997
10998         if (!info->attrs[NL80211_ATTR_COOKIE])
10999                 return -EINVAL;
11000
11001         if (!rdev->ops->mgmt_tx_cancel_wait)
11002                 return -EOPNOTSUPP;
11003
11004         switch (wdev->iftype) {
11005         case NL80211_IFTYPE_STATION:
11006         case NL80211_IFTYPE_ADHOC:
11007         case NL80211_IFTYPE_P2P_CLIENT:
11008         case NL80211_IFTYPE_AP:
11009         case NL80211_IFTYPE_AP_VLAN:
11010         case NL80211_IFTYPE_P2P_GO:
11011         case NL80211_IFTYPE_P2P_DEVICE:
11012                 break;
11013         case NL80211_IFTYPE_NAN:
11014         default:
11015                 return -EOPNOTSUPP;
11016         }
11017
11018         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11019
11020         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11021 }
11022
11023 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11024 {
11025         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11026         struct wireless_dev *wdev;
11027         struct net_device *dev = info->user_ptr[1];
11028         u8 ps_state;
11029         bool state;
11030         int err;
11031
11032         if (!info->attrs[NL80211_ATTR_PS_STATE])
11033                 return -EINVAL;
11034
11035         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11036
11037         wdev = dev->ieee80211_ptr;
11038
11039         if (!rdev->ops->set_power_mgmt)
11040                 return -EOPNOTSUPP;
11041
11042         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11043
11044         if (state == wdev->ps)
11045                 return 0;
11046
11047         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11048         if (!err)
11049                 wdev->ps = state;
11050         return err;
11051 }
11052
11053 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11054 {
11055         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11056         enum nl80211_ps_state ps_state;
11057         struct wireless_dev *wdev;
11058         struct net_device *dev = info->user_ptr[1];
11059         struct sk_buff *msg;
11060         void *hdr;
11061         int err;
11062
11063         wdev = dev->ieee80211_ptr;
11064
11065         if (!rdev->ops->set_power_mgmt)
11066                 return -EOPNOTSUPP;
11067
11068         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11069         if (!msg)
11070                 return -ENOMEM;
11071
11072         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11073                              NL80211_CMD_GET_POWER_SAVE);
11074         if (!hdr) {
11075                 err = -ENOBUFS;
11076                 goto free_msg;
11077         }
11078
11079         if (wdev->ps)
11080                 ps_state = NL80211_PS_ENABLED;
11081         else
11082                 ps_state = NL80211_PS_DISABLED;
11083
11084         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11085                 goto nla_put_failure;
11086
11087         genlmsg_end(msg, hdr);
11088         return genlmsg_reply(msg, info);
11089
11090  nla_put_failure:
11091         err = -ENOBUFS;
11092  free_msg:
11093         nlmsg_free(msg);
11094         return err;
11095 }
11096
11097 static const struct nla_policy
11098 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11099         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11100         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11101         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11102         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11103         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11104         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11105         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11106 };
11107
11108 static int nl80211_set_cqm_txe(struct genl_info *info,
11109                                u32 rate, u32 pkts, u32 intvl)
11110 {
11111         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11112         struct net_device *dev = info->user_ptr[1];
11113         struct wireless_dev *wdev = dev->ieee80211_ptr;
11114
11115         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11116                 return -EINVAL;
11117
11118         if (!rdev->ops->set_cqm_txe_config)
11119                 return -EOPNOTSUPP;
11120
11121         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11122             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11123                 return -EOPNOTSUPP;
11124
11125         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11126 }
11127
11128 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11129                                     struct net_device *dev)
11130 {
11131         struct wireless_dev *wdev = dev->ieee80211_ptr;
11132         s32 last, low, high;
11133         u32 hyst;
11134         int i, n, low_index;
11135         int err;
11136
11137         /* RSSI reporting disabled? */
11138         if (!wdev->cqm_config)
11139                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11140
11141         /*
11142          * Obtain current RSSI value if possible, if not and no RSSI threshold
11143          * event has been received yet, we should receive an event after a
11144          * connection is established and enough beacons received to calculate
11145          * the average.
11146          */
11147         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11148             rdev->ops->get_station) {
11149                 struct station_info sinfo = {};
11150                 u8 *mac_addr;
11151
11152                 mac_addr = wdev->current_bss->pub.bssid;
11153
11154                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11155                 if (err)
11156                         return err;
11157
11158                 cfg80211_sinfo_release_content(&sinfo);
11159                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11160                         wdev->cqm_config->last_rssi_event_value =
11161                                 (s8) sinfo.rx_beacon_signal_avg;
11162         }
11163
11164         last = wdev->cqm_config->last_rssi_event_value;
11165         hyst = wdev->cqm_config->rssi_hyst;
11166         n = wdev->cqm_config->n_rssi_thresholds;
11167
11168         for (i = 0; i < n; i++) {
11169                 i = array_index_nospec(i, n);
11170                 if (last < wdev->cqm_config->rssi_thresholds[i])
11171                         break;
11172         }
11173
11174         low_index = i - 1;
11175         if (low_index >= 0) {
11176                 low_index = array_index_nospec(low_index, n);
11177                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11178         } else {
11179                 low = S32_MIN;
11180         }
11181         if (i < n) {
11182                 i = array_index_nospec(i, n);
11183                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11184         } else {
11185                 high = S32_MAX;
11186         }
11187
11188         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11189 }
11190
11191 static int nl80211_set_cqm_rssi(struct genl_info *info,
11192                                 const s32 *thresholds, int n_thresholds,
11193                                 u32 hysteresis)
11194 {
11195         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11196         struct net_device *dev = info->user_ptr[1];
11197         struct wireless_dev *wdev = dev->ieee80211_ptr;
11198         int i, err;
11199         s32 prev = S32_MIN;
11200
11201         /* Check all values negative and sorted */
11202         for (i = 0; i < n_thresholds; i++) {
11203                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11204                         return -EINVAL;
11205
11206                 prev = thresholds[i];
11207         }
11208
11209         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11210             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11211                 return -EOPNOTSUPP;
11212
11213         wdev_lock(wdev);
11214         cfg80211_cqm_config_free(wdev);
11215         wdev_unlock(wdev);
11216
11217         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11218                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11219                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11220
11221                 return rdev_set_cqm_rssi_config(rdev, dev,
11222                                                 thresholds[0], hysteresis);
11223         }
11224
11225         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11226                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11227                 return -EOPNOTSUPP;
11228
11229         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11230                 n_thresholds = 0;
11231
11232         wdev_lock(wdev);
11233         if (n_thresholds) {
11234                 struct cfg80211_cqm_config *cqm_config;
11235
11236                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11237                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11238                 if (!cqm_config) {
11239                         err = -ENOMEM;
11240                         goto unlock;
11241                 }
11242
11243                 cqm_config->rssi_hyst = hysteresis;
11244                 cqm_config->n_rssi_thresholds = n_thresholds;
11245                 memcpy(cqm_config->rssi_thresholds, thresholds,
11246                        n_thresholds * sizeof(s32));
11247
11248                 wdev->cqm_config = cqm_config;
11249         }
11250
11251         err = cfg80211_cqm_rssi_update(rdev, dev);
11252
11253 unlock:
11254         wdev_unlock(wdev);
11255
11256         return err;
11257 }
11258
11259 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11260 {
11261         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11262         struct nlattr *cqm;
11263         int err;
11264
11265         cqm = info->attrs[NL80211_ATTR_CQM];
11266         if (!cqm)
11267                 return -EINVAL;
11268
11269         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11270                                           nl80211_attr_cqm_policy,
11271                                           info->extack);
11272         if (err)
11273                 return err;
11274
11275         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11276             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11277                 const s32 *thresholds =
11278                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11279                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11280                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11281
11282                 if (len % 4)
11283                         return -EINVAL;
11284
11285                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11286                                             hysteresis);
11287         }
11288
11289         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11290             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11291             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11292                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11293                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11294                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11295
11296                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11297         }
11298
11299         return -EINVAL;
11300 }
11301
11302 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11303 {
11304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11305         struct net_device *dev = info->user_ptr[1];
11306         struct ocb_setup setup = {};
11307         int err;
11308
11309         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11310         if (err)
11311                 return err;
11312
11313         return cfg80211_join_ocb(rdev, dev, &setup);
11314 }
11315
11316 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11317 {
11318         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11319         struct net_device *dev = info->user_ptr[1];
11320
11321         return cfg80211_leave_ocb(rdev, dev);
11322 }
11323
11324 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11325 {
11326         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11327         struct net_device *dev = info->user_ptr[1];
11328         struct mesh_config cfg;
11329         struct mesh_setup setup;
11330         int err;
11331
11332         /* start with default */
11333         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11334         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11335
11336         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11337                 /* and parse parameters if given */
11338                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11339                 if (err)
11340                         return err;
11341         }
11342
11343         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11344             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11345                 return -EINVAL;
11346
11347         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11348         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11349
11350         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11351             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11352                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11353                         return -EINVAL;
11354
11355         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11356                 setup.beacon_interval =
11357                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11358
11359                 err = cfg80211_validate_beacon_int(rdev,
11360                                                    NL80211_IFTYPE_MESH_POINT,
11361                                                    setup.beacon_interval);
11362                 if (err)
11363                         return err;
11364         }
11365
11366         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11367                 setup.dtim_period =
11368                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11369                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11370                         return -EINVAL;
11371         }
11372
11373         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11374                 /* parse additional setup parameters if given */
11375                 err = nl80211_parse_mesh_setup(info, &setup);
11376                 if (err)
11377                         return err;
11378         }
11379
11380         if (setup.user_mpm)
11381                 cfg.auto_open_plinks = false;
11382
11383         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11384                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11385                 if (err)
11386                         return err;
11387         } else {
11388                 /* __cfg80211_join_mesh() will sort it out */
11389                 setup.chandef.chan = NULL;
11390         }
11391
11392         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11393                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11394                 int n_rates =
11395                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11396                 struct ieee80211_supported_band *sband;
11397
11398                 if (!setup.chandef.chan)
11399                         return -EINVAL;
11400
11401                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11402
11403                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11404                                              &setup.basic_rates);
11405                 if (err)
11406                         return err;
11407         }
11408
11409         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11410                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11411                                                     NL80211_ATTR_TX_RATES,
11412                                                     &setup.beacon_rate);
11413                 if (err)
11414                         return err;
11415
11416                 if (!setup.chandef.chan)
11417                         return -EINVAL;
11418
11419                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11420                                               &setup.beacon_rate);
11421                 if (err)
11422                         return err;
11423         }
11424
11425         setup.userspace_handles_dfs =
11426                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11427
11428         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11429                 int r = validate_pae_over_nl80211(rdev, info);
11430
11431                 if (r < 0)
11432                         return r;
11433
11434                 setup.control_port_over_nl80211 = true;
11435         }
11436
11437         wdev_lock(dev->ieee80211_ptr);
11438         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11439         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11440                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11441         wdev_unlock(dev->ieee80211_ptr);
11442
11443         return err;
11444 }
11445
11446 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11447 {
11448         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11449         struct net_device *dev = info->user_ptr[1];
11450
11451         return cfg80211_leave_mesh(rdev, dev);
11452 }
11453
11454 #ifdef CONFIG_PM
11455 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11456                                         struct cfg80211_registered_device *rdev)
11457 {
11458         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11459         struct nlattr *nl_pats, *nl_pat;
11460         int i, pat_len;
11461
11462         if (!wowlan->n_patterns)
11463                 return 0;
11464
11465         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11466         if (!nl_pats)
11467                 return -ENOBUFS;
11468
11469         for (i = 0; i < wowlan->n_patterns; i++) {
11470                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11471                 if (!nl_pat)
11472                         return -ENOBUFS;
11473                 pat_len = wowlan->patterns[i].pattern_len;
11474                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11475                             wowlan->patterns[i].mask) ||
11476                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11477                             wowlan->patterns[i].pattern) ||
11478                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11479                                 wowlan->patterns[i].pkt_offset))
11480                         return -ENOBUFS;
11481                 nla_nest_end(msg, nl_pat);
11482         }
11483         nla_nest_end(msg, nl_pats);
11484
11485         return 0;
11486 }
11487
11488 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11489                                    struct cfg80211_wowlan_tcp *tcp)
11490 {
11491         struct nlattr *nl_tcp;
11492
11493         if (!tcp)
11494                 return 0;
11495
11496         nl_tcp = nla_nest_start_noflag(msg,
11497                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11498         if (!nl_tcp)
11499                 return -ENOBUFS;
11500
11501         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11502             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11503             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11504             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11505             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11506             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11507                     tcp->payload_len, tcp->payload) ||
11508             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11509                         tcp->data_interval) ||
11510             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11511                     tcp->wake_len, tcp->wake_data) ||
11512             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11513                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11514                 return -ENOBUFS;
11515
11516         if (tcp->payload_seq.len &&
11517             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11518                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11519                 return -ENOBUFS;
11520
11521         if (tcp->payload_tok.len &&
11522             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11523                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11524                     &tcp->payload_tok))
11525                 return -ENOBUFS;
11526
11527         nla_nest_end(msg, nl_tcp);
11528
11529         return 0;
11530 }
11531
11532 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11533                                   struct cfg80211_sched_scan_request *req)
11534 {
11535         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11536         int i;
11537
11538         if (!req)
11539                 return 0;
11540
11541         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11542         if (!nd)
11543                 return -ENOBUFS;
11544
11545         if (req->n_scan_plans == 1 &&
11546             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11547                         req->scan_plans[0].interval * 1000))
11548                 return -ENOBUFS;
11549
11550         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11551                 return -ENOBUFS;
11552
11553         if (req->relative_rssi_set) {
11554                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11555
11556                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11557                                req->relative_rssi))
11558                         return -ENOBUFS;
11559
11560                 rssi_adjust.band = req->rssi_adjust.band;
11561                 rssi_adjust.delta = req->rssi_adjust.delta;
11562                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11563                             sizeof(rssi_adjust), &rssi_adjust))
11564                         return -ENOBUFS;
11565         }
11566
11567         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11568         if (!freqs)
11569                 return -ENOBUFS;
11570
11571         for (i = 0; i < req->n_channels; i++) {
11572                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11573                         return -ENOBUFS;
11574         }
11575
11576         nla_nest_end(msg, freqs);
11577
11578         if (req->n_match_sets) {
11579                 matches = nla_nest_start_noflag(msg,
11580                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11581                 if (!matches)
11582                         return -ENOBUFS;
11583
11584                 for (i = 0; i < req->n_match_sets; i++) {
11585                         match = nla_nest_start_noflag(msg, i);
11586                         if (!match)
11587                                 return -ENOBUFS;
11588
11589                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11590                                     req->match_sets[i].ssid.ssid_len,
11591                                     req->match_sets[i].ssid.ssid))
11592                                 return -ENOBUFS;
11593                         nla_nest_end(msg, match);
11594                 }
11595                 nla_nest_end(msg, matches);
11596         }
11597
11598         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11599         if (!scan_plans)
11600                 return -ENOBUFS;
11601
11602         for (i = 0; i < req->n_scan_plans; i++) {
11603                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11604                 if (!scan_plan)
11605                         return -ENOBUFS;
11606
11607                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11608                                 req->scan_plans[i].interval) ||
11609                     (req->scan_plans[i].iterations &&
11610                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11611                                  req->scan_plans[i].iterations)))
11612                         return -ENOBUFS;
11613                 nla_nest_end(msg, scan_plan);
11614         }
11615         nla_nest_end(msg, scan_plans);
11616
11617         nla_nest_end(msg, nd);
11618
11619         return 0;
11620 }
11621
11622 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11623 {
11624         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11625         struct sk_buff *msg;
11626         void *hdr;
11627         u32 size = NLMSG_DEFAULT_SIZE;
11628
11629         if (!rdev->wiphy.wowlan)
11630                 return -EOPNOTSUPP;
11631
11632         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11633                 /* adjust size to have room for all the data */
11634                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11635                         rdev->wiphy.wowlan_config->tcp->payload_len +
11636                         rdev->wiphy.wowlan_config->tcp->wake_len +
11637                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11638         }
11639
11640         msg = nlmsg_new(size, GFP_KERNEL);
11641         if (!msg)
11642                 return -ENOMEM;
11643
11644         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11645                              NL80211_CMD_GET_WOWLAN);
11646         if (!hdr)
11647                 goto nla_put_failure;
11648
11649         if (rdev->wiphy.wowlan_config) {
11650                 struct nlattr *nl_wowlan;
11651
11652                 nl_wowlan = nla_nest_start_noflag(msg,
11653                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11654                 if (!nl_wowlan)
11655                         goto nla_put_failure;
11656
11657                 if ((rdev->wiphy.wowlan_config->any &&
11658                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11659                     (rdev->wiphy.wowlan_config->disconnect &&
11660                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11661                     (rdev->wiphy.wowlan_config->magic_pkt &&
11662                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11663                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11664                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11665                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11666                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11667                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11668                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11669                     (rdev->wiphy.wowlan_config->rfkill_release &&
11670                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11671                         goto nla_put_failure;
11672
11673                 if (nl80211_send_wowlan_patterns(msg, rdev))
11674                         goto nla_put_failure;
11675
11676                 if (nl80211_send_wowlan_tcp(msg,
11677                                             rdev->wiphy.wowlan_config->tcp))
11678                         goto nla_put_failure;
11679
11680                 if (nl80211_send_wowlan_nd(
11681                             msg,
11682                             rdev->wiphy.wowlan_config->nd_config))
11683                         goto nla_put_failure;
11684
11685                 nla_nest_end(msg, nl_wowlan);
11686         }
11687
11688         genlmsg_end(msg, hdr);
11689         return genlmsg_reply(msg, info);
11690
11691 nla_put_failure:
11692         nlmsg_free(msg);
11693         return -ENOBUFS;
11694 }
11695
11696 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11697                                     struct nlattr *attr,
11698                                     struct cfg80211_wowlan *trig)
11699 {
11700         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11701         struct cfg80211_wowlan_tcp *cfg;
11702         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11703         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11704         u32 size;
11705         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11706         int err, port;
11707
11708         if (!rdev->wiphy.wowlan->tcp)
11709                 return -EINVAL;
11710
11711         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11712                                           nl80211_wowlan_tcp_policy, NULL);
11713         if (err)
11714                 return err;
11715
11716         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11717             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11718             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11719             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11720             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11721             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11722             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11723             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11724                 return -EINVAL;
11725
11726         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11727         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11728                 return -EINVAL;
11729
11730         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11731                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11732             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11733                 return -EINVAL;
11734
11735         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11736         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11737                 return -EINVAL;
11738
11739         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11740         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11741                 return -EINVAL;
11742
11743         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11744                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11745
11746                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11747                 tokens_size = tokln - sizeof(*tok);
11748
11749                 if (!tok->len || tokens_size % tok->len)
11750                         return -EINVAL;
11751                 if (!rdev->wiphy.wowlan->tcp->tok)
11752                         return -EINVAL;
11753                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11754                         return -EINVAL;
11755                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11756                         return -EINVAL;
11757                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11758                         return -EINVAL;
11759                 if (tok->offset + tok->len > data_size)
11760                         return -EINVAL;
11761         }
11762
11763         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11764                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11765                 if (!rdev->wiphy.wowlan->tcp->seq)
11766                         return -EINVAL;
11767                 if (seq->len == 0 || seq->len > 4)
11768                         return -EINVAL;
11769                 if (seq->len + seq->offset > data_size)
11770                         return -EINVAL;
11771         }
11772
11773         size = sizeof(*cfg);
11774         size += data_size;
11775         size += wake_size + wake_mask_size;
11776         size += tokens_size;
11777
11778         cfg = kzalloc(size, GFP_KERNEL);
11779         if (!cfg)
11780                 return -ENOMEM;
11781         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11782         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11783         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11784                ETH_ALEN);
11785         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11786                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11787         else
11788                 port = 0;
11789 #ifdef CONFIG_INET
11790         /* allocate a socket and port for it and use it */
11791         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11792                             IPPROTO_TCP, &cfg->sock, 1);
11793         if (err) {
11794                 kfree(cfg);
11795                 return err;
11796         }
11797         if (inet_csk_get_port(cfg->sock->sk, port)) {
11798                 sock_release(cfg->sock);
11799                 kfree(cfg);
11800                 return -EADDRINUSE;
11801         }
11802         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11803 #else
11804         if (!port) {
11805                 kfree(cfg);
11806                 return -EINVAL;
11807         }
11808         cfg->src_port = port;
11809 #endif
11810
11811         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11812         cfg->payload_len = data_size;
11813         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11814         memcpy((void *)cfg->payload,
11815                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11816                data_size);
11817         if (seq)
11818                 cfg->payload_seq = *seq;
11819         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11820         cfg->wake_len = wake_size;
11821         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11822         memcpy((void *)cfg->wake_data,
11823                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11824                wake_size);
11825         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11826                          data_size + wake_size;
11827         memcpy((void *)cfg->wake_mask,
11828                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11829                wake_mask_size);
11830         if (tok) {
11831                 cfg->tokens_size = tokens_size;
11832                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11833         }
11834
11835         trig->tcp = cfg;
11836
11837         return 0;
11838 }
11839
11840 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11841                                    const struct wiphy_wowlan_support *wowlan,
11842                                    struct nlattr *attr,
11843                                    struct cfg80211_wowlan *trig)
11844 {
11845         struct nlattr **tb;
11846         int err;
11847
11848         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11849         if (!tb)
11850                 return -ENOMEM;
11851
11852         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11853                 err = -EOPNOTSUPP;
11854                 goto out;
11855         }
11856
11857         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11858                                           nl80211_policy, NULL);
11859         if (err)
11860                 goto out;
11861
11862         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11863                                                    wowlan->max_nd_match_sets);
11864         err = PTR_ERR_OR_ZERO(trig->nd_config);
11865         if (err)
11866                 trig->nd_config = NULL;
11867
11868 out:
11869         kfree(tb);
11870         return err;
11871 }
11872
11873 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11874 {
11875         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11876         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11877         struct cfg80211_wowlan new_triggers = {};
11878         struct cfg80211_wowlan *ntrig;
11879         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11880         int err, i;
11881         bool prev_enabled = rdev->wiphy.wowlan_config;
11882         bool regular = false;
11883
11884         if (!wowlan)
11885                 return -EOPNOTSUPP;
11886
11887         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11888                 cfg80211_rdev_free_wowlan(rdev);
11889                 rdev->wiphy.wowlan_config = NULL;
11890                 goto set_wakeup;
11891         }
11892
11893         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11894                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11895                                           nl80211_wowlan_policy, info->extack);
11896         if (err)
11897                 return err;
11898
11899         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11900                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11901                         return -EINVAL;
11902                 new_triggers.any = true;
11903         }
11904
11905         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11906                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11907                         return -EINVAL;
11908                 new_triggers.disconnect = true;
11909                 regular = true;
11910         }
11911
11912         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11913                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11914                         return -EINVAL;
11915                 new_triggers.magic_pkt = true;
11916                 regular = true;
11917         }
11918
11919         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11920                 return -EINVAL;
11921
11922         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11923                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11924                         return -EINVAL;
11925                 new_triggers.gtk_rekey_failure = true;
11926                 regular = true;
11927         }
11928
11929         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11930                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11931                         return -EINVAL;
11932                 new_triggers.eap_identity_req = true;
11933                 regular = true;
11934         }
11935
11936         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11937                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11938                         return -EINVAL;
11939                 new_triggers.four_way_handshake = true;
11940                 regular = true;
11941         }
11942
11943         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11944                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11945                         return -EINVAL;
11946                 new_triggers.rfkill_release = true;
11947                 regular = true;
11948         }
11949
11950         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11951                 struct nlattr *pat;
11952                 int n_patterns = 0;
11953                 int rem, pat_len, mask_len, pkt_offset;
11954                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11955
11956                 regular = true;
11957
11958                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11959                                     rem)
11960                         n_patterns++;
11961                 if (n_patterns > wowlan->n_patterns)
11962                         return -EINVAL;
11963
11964                 new_triggers.patterns = kcalloc(n_patterns,
11965                                                 sizeof(new_triggers.patterns[0]),
11966                                                 GFP_KERNEL);
11967                 if (!new_triggers.patterns)
11968                         return -ENOMEM;
11969
11970                 new_triggers.n_patterns = n_patterns;
11971                 i = 0;
11972
11973                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11974                                     rem) {
11975                         u8 *mask_pat;
11976
11977                         err = nla_parse_nested_deprecated(pat_tb,
11978                                                           MAX_NL80211_PKTPAT,
11979                                                           pat,
11980                                                           nl80211_packet_pattern_policy,
11981                                                           info->extack);
11982                         if (err)
11983                                 goto error;
11984
11985                         err = -EINVAL;
11986                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11987                             !pat_tb[NL80211_PKTPAT_PATTERN])
11988                                 goto error;
11989                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11990                         mask_len = DIV_ROUND_UP(pat_len, 8);
11991                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11992                                 goto error;
11993                         if (pat_len > wowlan->pattern_max_len ||
11994                             pat_len < wowlan->pattern_min_len)
11995                                 goto error;
11996
11997                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11998                                 pkt_offset = 0;
11999                         else
12000                                 pkt_offset = nla_get_u32(
12001                                         pat_tb[NL80211_PKTPAT_OFFSET]);
12002                         if (pkt_offset > wowlan->max_pkt_offset)
12003                                 goto error;
12004                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12005
12006                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12007                         if (!mask_pat) {
12008                                 err = -ENOMEM;
12009                                 goto error;
12010                         }
12011                         new_triggers.patterns[i].mask = mask_pat;
12012                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12013                                mask_len);
12014                         mask_pat += mask_len;
12015                         new_triggers.patterns[i].pattern = mask_pat;
12016                         new_triggers.patterns[i].pattern_len = pat_len;
12017                         memcpy(mask_pat,
12018                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12019                                pat_len);
12020                         i++;
12021                 }
12022         }
12023
12024         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12025                 regular = true;
12026                 err = nl80211_parse_wowlan_tcp(
12027                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12028                         &new_triggers);
12029                 if (err)
12030                         goto error;
12031         }
12032
12033         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12034                 regular = true;
12035                 err = nl80211_parse_wowlan_nd(
12036                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12037                         &new_triggers);
12038                 if (err)
12039                         goto error;
12040         }
12041
12042         /* The 'any' trigger means the device continues operating more or less
12043          * as in its normal operation mode and wakes up the host on most of the
12044          * normal interrupts (like packet RX, ...)
12045          * It therefore makes little sense to combine with the more constrained
12046          * wakeup trigger modes.
12047          */
12048         if (new_triggers.any && regular) {
12049                 err = -EINVAL;
12050                 goto error;
12051         }
12052
12053         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12054         if (!ntrig) {
12055                 err = -ENOMEM;
12056                 goto error;
12057         }
12058         cfg80211_rdev_free_wowlan(rdev);
12059         rdev->wiphy.wowlan_config = ntrig;
12060
12061  set_wakeup:
12062         if (rdev->ops->set_wakeup &&
12063             prev_enabled != !!rdev->wiphy.wowlan_config)
12064                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12065
12066         return 0;
12067  error:
12068         for (i = 0; i < new_triggers.n_patterns; i++)
12069                 kfree(new_triggers.patterns[i].mask);
12070         kfree(new_triggers.patterns);
12071         if (new_triggers.tcp && new_triggers.tcp->sock)
12072                 sock_release(new_triggers.tcp->sock);
12073         kfree(new_triggers.tcp);
12074         kfree(new_triggers.nd_config);
12075         return err;
12076 }
12077 #endif
12078
12079 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12080                                        struct cfg80211_registered_device *rdev)
12081 {
12082         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12083         int i, j, pat_len;
12084         struct cfg80211_coalesce_rules *rule;
12085
12086         if (!rdev->coalesce->n_rules)
12087                 return 0;
12088
12089         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12090         if (!nl_rules)
12091                 return -ENOBUFS;
12092
12093         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12094                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12095                 if (!nl_rule)
12096                         return -ENOBUFS;
12097
12098                 rule = &rdev->coalesce->rules[i];
12099                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12100                                 rule->delay))
12101                         return -ENOBUFS;
12102
12103                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12104                                 rule->condition))
12105                         return -ENOBUFS;
12106
12107                 nl_pats = nla_nest_start_noflag(msg,
12108                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12109                 if (!nl_pats)
12110                         return -ENOBUFS;
12111
12112                 for (j = 0; j < rule->n_patterns; j++) {
12113                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12114                         if (!nl_pat)
12115                                 return -ENOBUFS;
12116                         pat_len = rule->patterns[j].pattern_len;
12117                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12118                                     DIV_ROUND_UP(pat_len, 8),
12119                                     rule->patterns[j].mask) ||
12120                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12121                                     rule->patterns[j].pattern) ||
12122                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12123                                         rule->patterns[j].pkt_offset))
12124                                 return -ENOBUFS;
12125                         nla_nest_end(msg, nl_pat);
12126                 }
12127                 nla_nest_end(msg, nl_pats);
12128                 nla_nest_end(msg, nl_rule);
12129         }
12130         nla_nest_end(msg, nl_rules);
12131
12132         return 0;
12133 }
12134
12135 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12136 {
12137         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12138         struct sk_buff *msg;
12139         void *hdr;
12140
12141         if (!rdev->wiphy.coalesce)
12142                 return -EOPNOTSUPP;
12143
12144         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12145         if (!msg)
12146                 return -ENOMEM;
12147
12148         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12149                              NL80211_CMD_GET_COALESCE);
12150         if (!hdr)
12151                 goto nla_put_failure;
12152
12153         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12154                 goto nla_put_failure;
12155
12156         genlmsg_end(msg, hdr);
12157         return genlmsg_reply(msg, info);
12158
12159 nla_put_failure:
12160         nlmsg_free(msg);
12161         return -ENOBUFS;
12162 }
12163
12164 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12165 {
12166         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12167         int i, j;
12168         struct cfg80211_coalesce_rules *rule;
12169
12170         if (!coalesce)
12171                 return;
12172
12173         for (i = 0; i < coalesce->n_rules; i++) {
12174                 rule = &coalesce->rules[i];
12175                 for (j = 0; j < rule->n_patterns; j++)
12176                         kfree(rule->patterns[j].mask);
12177                 kfree(rule->patterns);
12178         }
12179         kfree(coalesce->rules);
12180         kfree(coalesce);
12181         rdev->coalesce = NULL;
12182 }
12183
12184 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12185                                        struct nlattr *rule,
12186                                        struct cfg80211_coalesce_rules *new_rule)
12187 {
12188         int err, i;
12189         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12190         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12191         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12192         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12193
12194         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12195                                           rule, nl80211_coalesce_policy, NULL);
12196         if (err)
12197                 return err;
12198
12199         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12200                 new_rule->delay =
12201                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12202         if (new_rule->delay > coalesce->max_delay)
12203                 return -EINVAL;
12204
12205         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12206                 new_rule->condition =
12207                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12208
12209         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12210                 return -EINVAL;
12211
12212         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12213                             rem)
12214                 n_patterns++;
12215         if (n_patterns > coalesce->n_patterns)
12216                 return -EINVAL;
12217
12218         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12219                                      GFP_KERNEL);
12220         if (!new_rule->patterns)
12221                 return -ENOMEM;
12222
12223         new_rule->n_patterns = n_patterns;
12224         i = 0;
12225
12226         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12227                             rem) {
12228                 u8 *mask_pat;
12229
12230                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12231                                                   pat,
12232                                                   nl80211_packet_pattern_policy,
12233                                                   NULL);
12234                 if (err)
12235                         return err;
12236
12237                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12238                     !pat_tb[NL80211_PKTPAT_PATTERN])
12239                         return -EINVAL;
12240                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12241                 mask_len = DIV_ROUND_UP(pat_len, 8);
12242                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12243                         return -EINVAL;
12244                 if (pat_len > coalesce->pattern_max_len ||
12245                     pat_len < coalesce->pattern_min_len)
12246                         return -EINVAL;
12247
12248                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12249                         pkt_offset = 0;
12250                 else
12251                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12252                 if (pkt_offset > coalesce->max_pkt_offset)
12253                         return -EINVAL;
12254                 new_rule->patterns[i].pkt_offset = pkt_offset;
12255
12256                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12257                 if (!mask_pat)
12258                         return -ENOMEM;
12259
12260                 new_rule->patterns[i].mask = mask_pat;
12261                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12262                        mask_len);
12263
12264                 mask_pat += mask_len;
12265                 new_rule->patterns[i].pattern = mask_pat;
12266                 new_rule->patterns[i].pattern_len = pat_len;
12267                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12268                        pat_len);
12269                 i++;
12270         }
12271
12272         return 0;
12273 }
12274
12275 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12276 {
12277         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12278         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12279         struct cfg80211_coalesce new_coalesce = {};
12280         struct cfg80211_coalesce *n_coalesce;
12281         int err, rem_rule, n_rules = 0, i, j;
12282         struct nlattr *rule;
12283         struct cfg80211_coalesce_rules *tmp_rule;
12284
12285         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12286                 return -EOPNOTSUPP;
12287
12288         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12289                 cfg80211_rdev_free_coalesce(rdev);
12290                 rdev_set_coalesce(rdev, NULL);
12291                 return 0;
12292         }
12293
12294         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12295                             rem_rule)
12296                 n_rules++;
12297         if (n_rules > coalesce->n_rules)
12298                 return -EINVAL;
12299
12300         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12301                                      GFP_KERNEL);
12302         if (!new_coalesce.rules)
12303                 return -ENOMEM;
12304
12305         new_coalesce.n_rules = n_rules;
12306         i = 0;
12307
12308         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12309                             rem_rule) {
12310                 err = nl80211_parse_coalesce_rule(rdev, rule,
12311                                                   &new_coalesce.rules[i]);
12312                 if (err)
12313                         goto error;
12314
12315                 i++;
12316         }
12317
12318         err = rdev_set_coalesce(rdev, &new_coalesce);
12319         if (err)
12320                 goto error;
12321
12322         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12323         if (!n_coalesce) {
12324                 err = -ENOMEM;
12325                 goto error;
12326         }
12327         cfg80211_rdev_free_coalesce(rdev);
12328         rdev->coalesce = n_coalesce;
12329
12330         return 0;
12331 error:
12332         for (i = 0; i < new_coalesce.n_rules; i++) {
12333                 tmp_rule = &new_coalesce.rules[i];
12334                 for (j = 0; j < tmp_rule->n_patterns; j++)
12335                         kfree(tmp_rule->patterns[j].mask);
12336                 kfree(tmp_rule->patterns);
12337         }
12338         kfree(new_coalesce.rules);
12339
12340         return err;
12341 }
12342
12343 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12344 {
12345         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12346         struct net_device *dev = info->user_ptr[1];
12347         struct wireless_dev *wdev = dev->ieee80211_ptr;
12348         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12349         struct cfg80211_gtk_rekey_data rekey_data;
12350         int err;
12351
12352         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12353                 return -EINVAL;
12354
12355         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12356                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12357                                           nl80211_rekey_policy, info->extack);
12358         if (err)
12359                 return err;
12360
12361         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12362             !tb[NL80211_REKEY_DATA_KCK])
12363                 return -EINVAL;
12364         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12365                 return -ERANGE;
12366         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12367             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12368               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12369                 return -ERANGE;
12370         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12371             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12372               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12373                 return -ERANGE;
12374
12375         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12376         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12377         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12378         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12379         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12380         if (tb[NL80211_REKEY_DATA_AKM])
12381                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12382
12383         wdev_lock(wdev);
12384         if (!wdev->current_bss) {
12385                 err = -ENOTCONN;
12386                 goto out;
12387         }
12388
12389         if (!rdev->ops->set_rekey_data) {
12390                 err = -EOPNOTSUPP;
12391                 goto out;
12392         }
12393
12394         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12395  out:
12396         wdev_unlock(wdev);
12397         return err;
12398 }
12399
12400 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12401                                              struct genl_info *info)
12402 {
12403         struct net_device *dev = info->user_ptr[1];
12404         struct wireless_dev *wdev = dev->ieee80211_ptr;
12405
12406         if (wdev->iftype != NL80211_IFTYPE_AP &&
12407             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12408                 return -EINVAL;
12409
12410         if (wdev->ap_unexpected_nlportid)
12411                 return -EBUSY;
12412
12413         wdev->ap_unexpected_nlportid = info->snd_portid;
12414         return 0;
12415 }
12416
12417 static int nl80211_probe_client(struct sk_buff *skb,
12418                                 struct genl_info *info)
12419 {
12420         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12421         struct net_device *dev = info->user_ptr[1];
12422         struct wireless_dev *wdev = dev->ieee80211_ptr;
12423         struct sk_buff *msg;
12424         void *hdr;
12425         const u8 *addr;
12426         u64 cookie;
12427         int err;
12428
12429         if (wdev->iftype != NL80211_IFTYPE_AP &&
12430             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12431                 return -EOPNOTSUPP;
12432
12433         if (!info->attrs[NL80211_ATTR_MAC])
12434                 return -EINVAL;
12435
12436         if (!rdev->ops->probe_client)
12437                 return -EOPNOTSUPP;
12438
12439         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12440         if (!msg)
12441                 return -ENOMEM;
12442
12443         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12444                              NL80211_CMD_PROBE_CLIENT);
12445         if (!hdr) {
12446                 err = -ENOBUFS;
12447                 goto free_msg;
12448         }
12449
12450         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12451
12452         err = rdev_probe_client(rdev, dev, addr, &cookie);
12453         if (err)
12454                 goto free_msg;
12455
12456         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12457                               NL80211_ATTR_PAD))
12458                 goto nla_put_failure;
12459
12460         genlmsg_end(msg, hdr);
12461
12462         return genlmsg_reply(msg, info);
12463
12464  nla_put_failure:
12465         err = -ENOBUFS;
12466  free_msg:
12467         nlmsg_free(msg);
12468         return err;
12469 }
12470
12471 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12472 {
12473         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12474         struct cfg80211_beacon_registration *reg, *nreg;
12475         int rv;
12476
12477         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12478                 return -EOPNOTSUPP;
12479
12480         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12481         if (!nreg)
12482                 return -ENOMEM;
12483
12484         /* First, check if already registered. */
12485         spin_lock_bh(&rdev->beacon_registrations_lock);
12486         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12487                 if (reg->nlportid == info->snd_portid) {
12488                         rv = -EALREADY;
12489                         goto out_err;
12490                 }
12491         }
12492         /* Add it to the list */
12493         nreg->nlportid = info->snd_portid;
12494         list_add(&nreg->list, &rdev->beacon_registrations);
12495
12496         spin_unlock_bh(&rdev->beacon_registrations_lock);
12497
12498         return 0;
12499 out_err:
12500         spin_unlock_bh(&rdev->beacon_registrations_lock);
12501         kfree(nreg);
12502         return rv;
12503 }
12504
12505 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12506 {
12507         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12508         struct wireless_dev *wdev = info->user_ptr[1];
12509         int err;
12510
12511         if (!rdev->ops->start_p2p_device)
12512                 return -EOPNOTSUPP;
12513
12514         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12515                 return -EOPNOTSUPP;
12516
12517         if (wdev_running(wdev))
12518                 return 0;
12519
12520         if (rfkill_blocked(rdev->rfkill))
12521                 return -ERFKILL;
12522
12523         err = rdev_start_p2p_device(rdev, wdev);
12524         if (err)
12525                 return err;
12526
12527         wdev->is_running = true;
12528         rdev->opencount++;
12529
12530         return 0;
12531 }
12532
12533 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12534 {
12535         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12536         struct wireless_dev *wdev = info->user_ptr[1];
12537
12538         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12539                 return -EOPNOTSUPP;
12540
12541         if (!rdev->ops->stop_p2p_device)
12542                 return -EOPNOTSUPP;
12543
12544         cfg80211_stop_p2p_device(rdev, wdev);
12545
12546         return 0;
12547 }
12548
12549 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12550 {
12551         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12552         struct wireless_dev *wdev = info->user_ptr[1];
12553         struct cfg80211_nan_conf conf = {};
12554         int err;
12555
12556         if (wdev->iftype != NL80211_IFTYPE_NAN)
12557                 return -EOPNOTSUPP;
12558
12559         if (wdev_running(wdev))
12560                 return -EEXIST;
12561
12562         if (rfkill_blocked(rdev->rfkill))
12563                 return -ERFKILL;
12564
12565         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12566                 return -EINVAL;
12567
12568         conf.master_pref =
12569                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12570
12571         if (info->attrs[NL80211_ATTR_BANDS]) {
12572                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12573
12574                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12575                         return -EOPNOTSUPP;
12576
12577                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12578                         return -EINVAL;
12579
12580                 conf.bands = bands;
12581         }
12582
12583         err = rdev_start_nan(rdev, wdev, &conf);
12584         if (err)
12585                 return err;
12586
12587         wdev->is_running = true;
12588         rdev->opencount++;
12589
12590         return 0;
12591 }
12592
12593 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12594 {
12595         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12596         struct wireless_dev *wdev = info->user_ptr[1];
12597
12598         if (wdev->iftype != NL80211_IFTYPE_NAN)
12599                 return -EOPNOTSUPP;
12600
12601         cfg80211_stop_nan(rdev, wdev);
12602
12603         return 0;
12604 }
12605
12606 static int validate_nan_filter(struct nlattr *filter_attr)
12607 {
12608         struct nlattr *attr;
12609         int len = 0, n_entries = 0, rem;
12610
12611         nla_for_each_nested(attr, filter_attr, rem) {
12612                 len += nla_len(attr);
12613                 n_entries++;
12614         }
12615
12616         if (len >= U8_MAX)
12617                 return -EINVAL;
12618
12619         return n_entries;
12620 }
12621
12622 static int handle_nan_filter(struct nlattr *attr_filter,
12623                              struct cfg80211_nan_func *func,
12624                              bool tx)
12625 {
12626         struct nlattr *attr;
12627         int n_entries, rem, i;
12628         struct cfg80211_nan_func_filter *filter;
12629
12630         n_entries = validate_nan_filter(attr_filter);
12631         if (n_entries < 0)
12632                 return n_entries;
12633
12634         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12635
12636         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12637         if (!filter)
12638                 return -ENOMEM;
12639
12640         i = 0;
12641         nla_for_each_nested(attr, attr_filter, rem) {
12642                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12643                 filter[i].len = nla_len(attr);
12644                 i++;
12645         }
12646         if (tx) {
12647                 func->num_tx_filters = n_entries;
12648                 func->tx_filters = filter;
12649         } else {
12650                 func->num_rx_filters = n_entries;
12651                 func->rx_filters = filter;
12652         }
12653
12654         return 0;
12655 }
12656
12657 static int nl80211_nan_add_func(struct sk_buff *skb,
12658                                 struct genl_info *info)
12659 {
12660         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12661         struct wireless_dev *wdev = info->user_ptr[1];
12662         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12663         struct cfg80211_nan_func *func;
12664         struct sk_buff *msg = NULL;
12665         void *hdr = NULL;
12666         int err = 0;
12667
12668         if (wdev->iftype != NL80211_IFTYPE_NAN)
12669                 return -EOPNOTSUPP;
12670
12671         if (!wdev_running(wdev))
12672                 return -ENOTCONN;
12673
12674         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12675                 return -EINVAL;
12676
12677         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12678                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12679                                           nl80211_nan_func_policy,
12680                                           info->extack);
12681         if (err)
12682                 return err;
12683
12684         func = kzalloc(sizeof(*func), GFP_KERNEL);
12685         if (!func)
12686                 return -ENOMEM;
12687
12688         func->cookie = cfg80211_assign_cookie(rdev);
12689
12690         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12691             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12692                 err = -EINVAL;
12693                 goto out;
12694         }
12695
12696
12697         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12698
12699         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12700                 err = -EINVAL;
12701                 goto out;
12702         }
12703
12704         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12705                sizeof(func->service_id));
12706
12707         func->close_range =
12708                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12709
12710         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12711                 func->serv_spec_info_len =
12712                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12713                 func->serv_spec_info =
12714                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12715                                 func->serv_spec_info_len,
12716                                 GFP_KERNEL);
12717                 if (!func->serv_spec_info) {
12718                         err = -ENOMEM;
12719                         goto out;
12720                 }
12721         }
12722
12723         if (tb[NL80211_NAN_FUNC_TTL])
12724                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12725
12726         switch (func->type) {
12727         case NL80211_NAN_FUNC_PUBLISH:
12728                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12729                         err = -EINVAL;
12730                         goto out;
12731                 }
12732
12733                 func->publish_type =
12734                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12735                 func->publish_bcast =
12736                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12737
12738                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12739                         func->publish_bcast) {
12740                         err = -EINVAL;
12741                         goto out;
12742                 }
12743                 break;
12744         case NL80211_NAN_FUNC_SUBSCRIBE:
12745                 func->subscribe_active =
12746                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12747                 break;
12748         case NL80211_NAN_FUNC_FOLLOW_UP:
12749                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12750                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12751                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12752                         err = -EINVAL;
12753                         goto out;
12754                 }
12755
12756                 func->followup_id =
12757                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12758                 func->followup_reqid =
12759                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12760                 memcpy(func->followup_dest.addr,
12761                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12762                        sizeof(func->followup_dest.addr));
12763                 if (func->ttl) {
12764                         err = -EINVAL;
12765                         goto out;
12766                 }
12767                 break;
12768         default:
12769                 err = -EINVAL;
12770                 goto out;
12771         }
12772
12773         if (tb[NL80211_NAN_FUNC_SRF]) {
12774                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12775
12776                 err = nla_parse_nested_deprecated(srf_tb,
12777                                                   NL80211_NAN_SRF_ATTR_MAX,
12778                                                   tb[NL80211_NAN_FUNC_SRF],
12779                                                   nl80211_nan_srf_policy,
12780                                                   info->extack);
12781                 if (err)
12782                         goto out;
12783
12784                 func->srf_include =
12785                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12786
12787                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12788                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12789                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12790                                 err = -EINVAL;
12791                                 goto out;
12792                         }
12793
12794                         func->srf_bf_len =
12795                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12796                         func->srf_bf =
12797                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12798                                         func->srf_bf_len, GFP_KERNEL);
12799                         if (!func->srf_bf) {
12800                                 err = -ENOMEM;
12801                                 goto out;
12802                         }
12803
12804                         func->srf_bf_idx =
12805                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12806                 } else {
12807                         struct nlattr *attr, *mac_attr =
12808                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12809                         int n_entries, rem, i = 0;
12810
12811                         if (!mac_attr) {
12812                                 err = -EINVAL;
12813                                 goto out;
12814                         }
12815
12816                         n_entries = validate_acl_mac_addrs(mac_attr);
12817                         if (n_entries <= 0) {
12818                                 err = -EINVAL;
12819                                 goto out;
12820                         }
12821
12822                         func->srf_num_macs = n_entries;
12823                         func->srf_macs =
12824                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12825                                         GFP_KERNEL);
12826                         if (!func->srf_macs) {
12827                                 err = -ENOMEM;
12828                                 goto out;
12829                         }
12830
12831                         nla_for_each_nested(attr, mac_attr, rem)
12832                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12833                                        sizeof(*func->srf_macs));
12834                 }
12835         }
12836
12837         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12838                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12839                                         func, true);
12840                 if (err)
12841                         goto out;
12842         }
12843
12844         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12845                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12846                                         func, false);
12847                 if (err)
12848                         goto out;
12849         }
12850
12851         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12852         if (!msg) {
12853                 err = -ENOMEM;
12854                 goto out;
12855         }
12856
12857         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12858                              NL80211_CMD_ADD_NAN_FUNCTION);
12859         /* This can't really happen - we just allocated 4KB */
12860         if (WARN_ON(!hdr)) {
12861                 err = -ENOMEM;
12862                 goto out;
12863         }
12864
12865         err = rdev_add_nan_func(rdev, wdev, func);
12866 out:
12867         if (err < 0) {
12868                 cfg80211_free_nan_func(func);
12869                 nlmsg_free(msg);
12870                 return err;
12871         }
12872
12873         /* propagate the instance id and cookie to userspace  */
12874         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12875                               NL80211_ATTR_PAD))
12876                 goto nla_put_failure;
12877
12878         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12879         if (!func_attr)
12880                 goto nla_put_failure;
12881
12882         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12883                        func->instance_id))
12884                 goto nla_put_failure;
12885
12886         nla_nest_end(msg, func_attr);
12887
12888         genlmsg_end(msg, hdr);
12889         return genlmsg_reply(msg, info);
12890
12891 nla_put_failure:
12892         nlmsg_free(msg);
12893         return -ENOBUFS;
12894 }
12895
12896 static int nl80211_nan_del_func(struct sk_buff *skb,
12897                                struct genl_info *info)
12898 {
12899         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12900         struct wireless_dev *wdev = info->user_ptr[1];
12901         u64 cookie;
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_COOKIE])
12910                 return -EINVAL;
12911
12912         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12913
12914         rdev_del_nan_func(rdev, wdev, cookie);
12915
12916         return 0;
12917 }
12918
12919 static int nl80211_nan_change_config(struct sk_buff *skb,
12920                                      struct genl_info *info)
12921 {
12922         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12923         struct wireless_dev *wdev = info->user_ptr[1];
12924         struct cfg80211_nan_conf conf = {};
12925         u32 changed = 0;
12926
12927         if (wdev->iftype != NL80211_IFTYPE_NAN)
12928                 return -EOPNOTSUPP;
12929
12930         if (!wdev_running(wdev))
12931                 return -ENOTCONN;
12932
12933         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12934                 conf.master_pref =
12935                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12936                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12937                         return -EINVAL;
12938
12939                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12940         }
12941
12942         if (info->attrs[NL80211_ATTR_BANDS]) {
12943                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12944
12945                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12946                         return -EOPNOTSUPP;
12947
12948                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12949                         return -EINVAL;
12950
12951                 conf.bands = bands;
12952                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12953         }
12954
12955         if (!changed)
12956                 return -EINVAL;
12957
12958         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12959 }
12960
12961 void cfg80211_nan_match(struct wireless_dev *wdev,
12962                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12963 {
12964         struct wiphy *wiphy = wdev->wiphy;
12965         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12966         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12967         struct sk_buff *msg;
12968         void *hdr;
12969
12970         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12971                 return;
12972
12973         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12974         if (!msg)
12975                 return;
12976
12977         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12978         if (!hdr) {
12979                 nlmsg_free(msg);
12980                 return;
12981         }
12982
12983         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12984             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12985                                          wdev->netdev->ifindex)) ||
12986             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12987                               NL80211_ATTR_PAD))
12988                 goto nla_put_failure;
12989
12990         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12991                               NL80211_ATTR_PAD) ||
12992             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12993                 goto nla_put_failure;
12994
12995         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12996         if (!match_attr)
12997                 goto nla_put_failure;
12998
12999         local_func_attr = nla_nest_start_noflag(msg,
13000                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
13001         if (!local_func_attr)
13002                 goto nla_put_failure;
13003
13004         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13005                 goto nla_put_failure;
13006
13007         nla_nest_end(msg, local_func_attr);
13008
13009         peer_func_attr = nla_nest_start_noflag(msg,
13010                                                NL80211_NAN_MATCH_FUNC_PEER);
13011         if (!peer_func_attr)
13012                 goto nla_put_failure;
13013
13014         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13015             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13016                 goto nla_put_failure;
13017
13018         if (match->info && match->info_len &&
13019             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13020                     match->info))
13021                 goto nla_put_failure;
13022
13023         nla_nest_end(msg, peer_func_attr);
13024         nla_nest_end(msg, match_attr);
13025         genlmsg_end(msg, hdr);
13026
13027         if (!wdev->owner_nlportid)
13028                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13029                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13030         else
13031                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13032                                 wdev->owner_nlportid);
13033
13034         return;
13035
13036 nla_put_failure:
13037         nlmsg_free(msg);
13038 }
13039 EXPORT_SYMBOL(cfg80211_nan_match);
13040
13041 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13042                                   u8 inst_id,
13043                                   enum nl80211_nan_func_term_reason reason,
13044                                   u64 cookie, gfp_t gfp)
13045 {
13046         struct wiphy *wiphy = wdev->wiphy;
13047         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13048         struct sk_buff *msg;
13049         struct nlattr *func_attr;
13050         void *hdr;
13051
13052         if (WARN_ON(!inst_id))
13053                 return;
13054
13055         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13056         if (!msg)
13057                 return;
13058
13059         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13060         if (!hdr) {
13061                 nlmsg_free(msg);
13062                 return;
13063         }
13064
13065         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13066             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13067                                          wdev->netdev->ifindex)) ||
13068             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13069                               NL80211_ATTR_PAD))
13070                 goto nla_put_failure;
13071
13072         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13073                               NL80211_ATTR_PAD))
13074                 goto nla_put_failure;
13075
13076         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13077         if (!func_attr)
13078                 goto nla_put_failure;
13079
13080         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13081             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13082                 goto nla_put_failure;
13083
13084         nla_nest_end(msg, func_attr);
13085         genlmsg_end(msg, hdr);
13086
13087         if (!wdev->owner_nlportid)
13088                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13089                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13090         else
13091                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13092                                 wdev->owner_nlportid);
13093
13094         return;
13095
13096 nla_put_failure:
13097         nlmsg_free(msg);
13098 }
13099 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13100
13101 static int nl80211_get_protocol_features(struct sk_buff *skb,
13102                                          struct genl_info *info)
13103 {
13104         void *hdr;
13105         struct sk_buff *msg;
13106
13107         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13108         if (!msg)
13109                 return -ENOMEM;
13110
13111         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13112                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13113         if (!hdr)
13114                 goto nla_put_failure;
13115
13116         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13117                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13118                 goto nla_put_failure;
13119
13120         genlmsg_end(msg, hdr);
13121         return genlmsg_reply(msg, info);
13122
13123  nla_put_failure:
13124         kfree_skb(msg);
13125         return -ENOBUFS;
13126 }
13127
13128 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13129 {
13130         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13131         struct cfg80211_update_ft_ies_params ft_params;
13132         struct net_device *dev = info->user_ptr[1];
13133
13134         if (!rdev->ops->update_ft_ies)
13135                 return -EOPNOTSUPP;
13136
13137         if (!info->attrs[NL80211_ATTR_MDID] ||
13138             !info->attrs[NL80211_ATTR_IE])
13139                 return -EINVAL;
13140
13141         memset(&ft_params, 0, sizeof(ft_params));
13142         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13143         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13144         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13145
13146         return rdev_update_ft_ies(rdev, dev, &ft_params);
13147 }
13148
13149 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13150                                        struct genl_info *info)
13151 {
13152         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13153         struct wireless_dev *wdev = info->user_ptr[1];
13154         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13155         u16 duration;
13156         int ret;
13157
13158         if (!rdev->ops->crit_proto_start)
13159                 return -EOPNOTSUPP;
13160
13161         if (WARN_ON(!rdev->ops->crit_proto_stop))
13162                 return -EINVAL;
13163
13164         if (rdev->crit_proto_nlportid)
13165                 return -EBUSY;
13166
13167         /* determine protocol if provided */
13168         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13169                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13170
13171         if (proto >= NUM_NL80211_CRIT_PROTO)
13172                 return -EINVAL;
13173
13174         /* timeout must be provided */
13175         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13176                 return -EINVAL;
13177
13178         duration =
13179                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13180
13181         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
13182                 return -ERANGE;
13183
13184         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13185         if (!ret)
13186                 rdev->crit_proto_nlportid = info->snd_portid;
13187
13188         return ret;
13189 }
13190
13191 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13192                                       struct genl_info *info)
13193 {
13194         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13195         struct wireless_dev *wdev = info->user_ptr[1];
13196
13197         if (!rdev->ops->crit_proto_stop)
13198                 return -EOPNOTSUPP;
13199
13200         if (rdev->crit_proto_nlportid) {
13201                 rdev->crit_proto_nlportid = 0;
13202                 rdev_crit_proto_stop(rdev, wdev);
13203         }
13204         return 0;
13205 }
13206
13207 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13208                                        struct nlattr *attr,
13209                                        struct netlink_ext_ack *extack)
13210 {
13211         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13212                 if (attr->nla_type & NLA_F_NESTED) {
13213                         NL_SET_ERR_MSG_ATTR(extack, attr,
13214                                             "unexpected nested data");
13215                         return -EINVAL;
13216                 }
13217
13218                 return 0;
13219         }
13220
13221         if (!(attr->nla_type & NLA_F_NESTED)) {
13222                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13223                 return -EINVAL;
13224         }
13225
13226         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13227 }
13228
13229 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13230 {
13231         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13232         struct wireless_dev *wdev =
13233                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13234         int i, err;
13235         u32 vid, subcmd;
13236
13237         if (!rdev->wiphy.vendor_commands)
13238                 return -EOPNOTSUPP;
13239
13240         if (IS_ERR(wdev)) {
13241                 err = PTR_ERR(wdev);
13242                 if (err != -EINVAL)
13243                         return err;
13244                 wdev = NULL;
13245         } else if (wdev->wiphy != &rdev->wiphy) {
13246                 return -EINVAL;
13247         }
13248
13249         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13250             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13251                 return -EINVAL;
13252
13253         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13254         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13255         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13256                 const struct wiphy_vendor_command *vcmd;
13257                 void *data = NULL;
13258                 int len = 0;
13259
13260                 vcmd = &rdev->wiphy.vendor_commands[i];
13261
13262                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13263                         continue;
13264
13265                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13266                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13267                         if (!wdev)
13268                                 return -EINVAL;
13269                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13270                             !wdev->netdev)
13271                                 return -EINVAL;
13272
13273                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13274                                 if (!wdev_running(wdev))
13275                                         return -ENETDOWN;
13276                         }
13277                 } else {
13278                         wdev = NULL;
13279                 }
13280
13281                 if (!vcmd->doit)
13282                         return -EOPNOTSUPP;
13283
13284                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13285                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13286                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13287
13288                         err = nl80211_vendor_check_policy(vcmd,
13289                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13290                                         info->extack);
13291                         if (err)
13292                                 return err;
13293                 }
13294
13295                 rdev->cur_cmd_info = info;
13296                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13297                 rdev->cur_cmd_info = NULL;
13298                 return err;
13299         }
13300
13301         return -EOPNOTSUPP;
13302 }
13303
13304 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13305                                        struct netlink_callback *cb,
13306                                        struct cfg80211_registered_device **rdev,
13307                                        struct wireless_dev **wdev)
13308 {
13309         struct nlattr **attrbuf;
13310         u32 vid, subcmd;
13311         unsigned int i;
13312         int vcmd_idx = -1;
13313         int err;
13314         void *data = NULL;
13315         unsigned int data_len = 0;
13316
13317         if (cb->args[0]) {
13318                 /* subtract the 1 again here */
13319                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13320                 struct wireless_dev *tmp;
13321
13322                 if (!wiphy)
13323                         return -ENODEV;
13324                 *rdev = wiphy_to_rdev(wiphy);
13325                 *wdev = NULL;
13326
13327                 if (cb->args[1]) {
13328                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13329                                 if (tmp->identifier == cb->args[1] - 1) {
13330                                         *wdev = tmp;
13331                                         break;
13332                                 }
13333                         }
13334                 }
13335
13336                 /* keep rtnl locked in successful case */
13337                 return 0;
13338         }
13339
13340         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13341         if (!attrbuf)
13342                 return -ENOMEM;
13343
13344         err = nlmsg_parse_deprecated(cb->nlh,
13345                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13346                                      attrbuf, nl80211_fam.maxattr,
13347                                      nl80211_policy, NULL);
13348         if (err)
13349                 goto out;
13350
13351         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13352             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13353                 err = -EINVAL;
13354                 goto out;
13355         }
13356
13357         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13358         if (IS_ERR(*wdev))
13359                 *wdev = NULL;
13360
13361         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13362         if (IS_ERR(*rdev)) {
13363                 err = PTR_ERR(*rdev);
13364                 goto out;
13365         }
13366
13367         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13368         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13369
13370         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13371                 const struct wiphy_vendor_command *vcmd;
13372
13373                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13374
13375                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13376                         continue;
13377
13378                 if (!vcmd->dumpit) {
13379                         err = -EOPNOTSUPP;
13380                         goto out;
13381                 }
13382
13383                 vcmd_idx = i;
13384                 break;
13385         }
13386
13387         if (vcmd_idx < 0) {
13388                 err = -EOPNOTSUPP;
13389                 goto out;
13390         }
13391
13392         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13393                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13394                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13395
13396                 err = nl80211_vendor_check_policy(
13397                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13398                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13399                                 cb->extack);
13400                 if (err)
13401                         goto out;
13402         }
13403
13404         /* 0 is the first index - add 1 to parse only once */
13405         cb->args[0] = (*rdev)->wiphy_idx + 1;
13406         /* add 1 to know if it was NULL */
13407         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13408         cb->args[2] = vcmd_idx;
13409         cb->args[3] = (unsigned long)data;
13410         cb->args[4] = data_len;
13411
13412         /* keep rtnl locked in successful case */
13413         err = 0;
13414 out:
13415         kfree(attrbuf);
13416         return err;
13417 }
13418
13419 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13420                                    struct netlink_callback *cb)
13421 {
13422         struct cfg80211_registered_device *rdev;
13423         struct wireless_dev *wdev;
13424         unsigned int vcmd_idx;
13425         const struct wiphy_vendor_command *vcmd;
13426         void *data;
13427         int data_len;
13428         int err;
13429         struct nlattr *vendor_data;
13430
13431         rtnl_lock();
13432         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13433         if (err)
13434                 goto out;
13435
13436         vcmd_idx = cb->args[2];
13437         data = (void *)cb->args[3];
13438         data_len = cb->args[4];
13439         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13440
13441         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13442                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13443                 if (!wdev) {
13444                         err = -EINVAL;
13445                         goto out;
13446                 }
13447                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13448                     !wdev->netdev) {
13449                         err = -EINVAL;
13450                         goto out;
13451                 }
13452
13453                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13454                         if (!wdev_running(wdev)) {
13455                                 err = -ENETDOWN;
13456                                 goto out;
13457                         }
13458                 }
13459         }
13460
13461         while (1) {
13462                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13463                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13464                                            NL80211_CMD_VENDOR);
13465                 if (!hdr)
13466                         break;
13467
13468                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13469                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13470                                                wdev_id(wdev),
13471                                                NL80211_ATTR_PAD))) {
13472                         genlmsg_cancel(skb, hdr);
13473                         break;
13474                 }
13475
13476                 vendor_data = nla_nest_start_noflag(skb,
13477                                                     NL80211_ATTR_VENDOR_DATA);
13478                 if (!vendor_data) {
13479                         genlmsg_cancel(skb, hdr);
13480                         break;
13481                 }
13482
13483                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13484                                    (unsigned long *)&cb->args[5]);
13485                 nla_nest_end(skb, vendor_data);
13486
13487                 if (err == -ENOBUFS || err == -ENOENT) {
13488                         genlmsg_cancel(skb, hdr);
13489                         break;
13490                 } else if (err <= 0) {
13491                         genlmsg_cancel(skb, hdr);
13492                         goto out;
13493                 }
13494
13495                 genlmsg_end(skb, hdr);
13496         }
13497
13498         err = skb->len;
13499  out:
13500         rtnl_unlock();
13501         return err;
13502 }
13503
13504 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13505                                            enum nl80211_commands cmd,
13506                                            enum nl80211_attrs attr,
13507                                            int approxlen)
13508 {
13509         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13510
13511         if (WARN_ON(!rdev->cur_cmd_info))
13512                 return NULL;
13513
13514         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13515                                            rdev->cur_cmd_info->snd_portid,
13516                                            rdev->cur_cmd_info->snd_seq,
13517                                            cmd, attr, NULL, GFP_KERNEL);
13518 }
13519 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13520
13521 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13522 {
13523         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13524         void *hdr = ((void **)skb->cb)[1];
13525         struct nlattr *data = ((void **)skb->cb)[2];
13526
13527         /* clear CB data for netlink core to own from now on */
13528         memset(skb->cb, 0, sizeof(skb->cb));
13529
13530         if (WARN_ON(!rdev->cur_cmd_info)) {
13531                 kfree_skb(skb);
13532                 return -EINVAL;
13533         }
13534
13535         nla_nest_end(skb, data);
13536         genlmsg_end(skb, hdr);
13537         return genlmsg_reply(skb, rdev->cur_cmd_info);
13538 }
13539 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13540
13541 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13542 {
13543         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13544
13545         if (WARN_ON(!rdev->cur_cmd_info))
13546                 return 0;
13547
13548         return rdev->cur_cmd_info->snd_portid;
13549 }
13550 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13551
13552 static int nl80211_set_qos_map(struct sk_buff *skb,
13553                                struct genl_info *info)
13554 {
13555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13556         struct cfg80211_qos_map *qos_map = NULL;
13557         struct net_device *dev = info->user_ptr[1];
13558         u8 *pos, len, num_des, des_len, des;
13559         int ret;
13560
13561         if (!rdev->ops->set_qos_map)
13562                 return -EOPNOTSUPP;
13563
13564         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13565                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13566                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13567
13568                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13569                     len > IEEE80211_QOS_MAP_LEN_MAX)
13570                         return -EINVAL;
13571
13572                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13573                 if (!qos_map)
13574                         return -ENOMEM;
13575
13576                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13577                 if (num_des) {
13578                         des_len = num_des *
13579                                 sizeof(struct cfg80211_dscp_exception);
13580                         memcpy(qos_map->dscp_exception, pos, des_len);
13581                         qos_map->num_des = num_des;
13582                         for (des = 0; des < num_des; des++) {
13583                                 if (qos_map->dscp_exception[des].up > 7) {
13584                                         kfree(qos_map);
13585                                         return -EINVAL;
13586                                 }
13587                         }
13588                         pos += des_len;
13589                 }
13590                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13591         }
13592
13593         wdev_lock(dev->ieee80211_ptr);
13594         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13595         if (!ret)
13596                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13597         wdev_unlock(dev->ieee80211_ptr);
13598
13599         kfree(qos_map);
13600         return ret;
13601 }
13602
13603 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13604 {
13605         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13606         struct net_device *dev = info->user_ptr[1];
13607         struct wireless_dev *wdev = dev->ieee80211_ptr;
13608         const u8 *peer;
13609         u8 tsid, up;
13610         u16 admitted_time = 0;
13611         int err;
13612
13613         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13614                 return -EOPNOTSUPP;
13615
13616         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13617             !info->attrs[NL80211_ATTR_USER_PRIO])
13618                 return -EINVAL;
13619
13620         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13621         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13622
13623         /* WMM uses TIDs 0-7 even for TSPEC */
13624         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13625                 /* TODO: handle 802.11 TSPEC/admission control
13626                  * need more attributes for that (e.g. BA session requirement);
13627                  * change the WMM adminssion test above to allow both then
13628                  */
13629                 return -EINVAL;
13630         }
13631
13632         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13633
13634         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13635                 admitted_time =
13636                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13637                 if (!admitted_time)
13638                         return -EINVAL;
13639         }
13640
13641         wdev_lock(wdev);
13642         switch (wdev->iftype) {
13643         case NL80211_IFTYPE_STATION:
13644         case NL80211_IFTYPE_P2P_CLIENT:
13645                 if (wdev->current_bss)
13646                         break;
13647                 err = -ENOTCONN;
13648                 goto out;
13649         default:
13650                 err = -EOPNOTSUPP;
13651                 goto out;
13652         }
13653
13654         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13655
13656  out:
13657         wdev_unlock(wdev);
13658         return err;
13659 }
13660
13661 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13662 {
13663         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13664         struct net_device *dev = info->user_ptr[1];
13665         struct wireless_dev *wdev = dev->ieee80211_ptr;
13666         const u8 *peer;
13667         u8 tsid;
13668         int err;
13669
13670         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13671                 return -EINVAL;
13672
13673         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13674         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13675
13676         wdev_lock(wdev);
13677         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13678         wdev_unlock(wdev);
13679
13680         return err;
13681 }
13682
13683 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13684                                        struct genl_info *info)
13685 {
13686         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13687         struct net_device *dev = info->user_ptr[1];
13688         struct wireless_dev *wdev = dev->ieee80211_ptr;
13689         struct cfg80211_chan_def chandef = {};
13690         const u8 *addr;
13691         u8 oper_class;
13692         int err;
13693
13694         if (!rdev->ops->tdls_channel_switch ||
13695             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13696                 return -EOPNOTSUPP;
13697
13698         switch (dev->ieee80211_ptr->iftype) {
13699         case NL80211_IFTYPE_STATION:
13700         case NL80211_IFTYPE_P2P_CLIENT:
13701                 break;
13702         default:
13703                 return -EOPNOTSUPP;
13704         }
13705
13706         if (!info->attrs[NL80211_ATTR_MAC] ||
13707             !info->attrs[NL80211_ATTR_OPER_CLASS])
13708                 return -EINVAL;
13709
13710         err = nl80211_parse_chandef(rdev, info, &chandef);
13711         if (err)
13712                 return err;
13713
13714         /*
13715          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13716          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13717          * specification is not defined for them.
13718          */
13719         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13720             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13721             chandef.width != NL80211_CHAN_WIDTH_20)
13722                 return -EINVAL;
13723
13724         /* we will be active on the TDLS link */
13725         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13726                                            wdev->iftype))
13727                 return -EINVAL;
13728
13729         /* don't allow switching to DFS channels */
13730         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13731                 return -EINVAL;
13732
13733         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13734         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13735
13736         wdev_lock(wdev);
13737         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13738         wdev_unlock(wdev);
13739
13740         return err;
13741 }
13742
13743 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13744                                               struct genl_info *info)
13745 {
13746         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13747         struct net_device *dev = info->user_ptr[1];
13748         struct wireless_dev *wdev = dev->ieee80211_ptr;
13749         const u8 *addr;
13750
13751         if (!rdev->ops->tdls_channel_switch ||
13752             !rdev->ops->tdls_cancel_channel_switch ||
13753             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13754                 return -EOPNOTSUPP;
13755
13756         switch (dev->ieee80211_ptr->iftype) {
13757         case NL80211_IFTYPE_STATION:
13758         case NL80211_IFTYPE_P2P_CLIENT:
13759                 break;
13760         default:
13761                 return -EOPNOTSUPP;
13762         }
13763
13764         if (!info->attrs[NL80211_ATTR_MAC])
13765                 return -EINVAL;
13766
13767         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13768
13769         wdev_lock(wdev);
13770         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13771         wdev_unlock(wdev);
13772
13773         return 0;
13774 }
13775
13776 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13777                                             struct genl_info *info)
13778 {
13779         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13780         struct net_device *dev = info->user_ptr[1];
13781         struct wireless_dev *wdev = dev->ieee80211_ptr;
13782         const struct nlattr *nla;
13783         bool enabled;
13784
13785         if (!rdev->ops->set_multicast_to_unicast)
13786                 return -EOPNOTSUPP;
13787
13788         if (wdev->iftype != NL80211_IFTYPE_AP &&
13789             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13790                 return -EOPNOTSUPP;
13791
13792         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13793         enabled = nla_get_flag(nla);
13794
13795         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13796 }
13797
13798 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13799 {
13800         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13801         struct net_device *dev = info->user_ptr[1];
13802         struct wireless_dev *wdev = dev->ieee80211_ptr;
13803         struct cfg80211_pmk_conf pmk_conf = {};
13804         int ret;
13805
13806         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13807             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13808                 return -EOPNOTSUPP;
13809
13810         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13811                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13812                 return -EOPNOTSUPP;
13813
13814         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13815                 return -EINVAL;
13816
13817         wdev_lock(wdev);
13818         if (!wdev->current_bss) {
13819                 ret = -ENOTCONN;
13820                 goto out;
13821         }
13822
13823         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13824         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13825                 ret = -EINVAL;
13826                 goto out;
13827         }
13828
13829         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13830         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13831         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13832             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13833                 ret = -EINVAL;
13834                 goto out;
13835         }
13836
13837         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13838                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13839
13840                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13841                         ret = -EINVAL;
13842                         goto out;
13843                 }
13844
13845                 pmk_conf.pmk_r0_name =
13846                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13847         }
13848
13849         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13850 out:
13851         wdev_unlock(wdev);
13852         return ret;
13853 }
13854
13855 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13856 {
13857         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13858         struct net_device *dev = info->user_ptr[1];
13859         struct wireless_dev *wdev = dev->ieee80211_ptr;
13860         const u8 *aa;
13861         int ret;
13862
13863         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13864             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13865                 return -EOPNOTSUPP;
13866
13867         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13868                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13869                 return -EOPNOTSUPP;
13870
13871         if (!info->attrs[NL80211_ATTR_MAC])
13872                 return -EINVAL;
13873
13874         wdev_lock(wdev);
13875         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13876         ret = rdev_del_pmk(rdev, dev, aa);
13877         wdev_unlock(wdev);
13878
13879         return ret;
13880 }
13881
13882 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13883 {
13884         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13885         struct net_device *dev = info->user_ptr[1];
13886         struct cfg80211_external_auth_params params;
13887
13888         if (!rdev->ops->external_auth)
13889                 return -EOPNOTSUPP;
13890
13891         if (!info->attrs[NL80211_ATTR_SSID] &&
13892             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13893             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13894                 return -EINVAL;
13895
13896         if (!info->attrs[NL80211_ATTR_BSSID])
13897                 return -EINVAL;
13898
13899         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13900                 return -EINVAL;
13901
13902         memset(&params, 0, sizeof(params));
13903
13904         if (info->attrs[NL80211_ATTR_SSID]) {
13905                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13906                 if (params.ssid.ssid_len == 0 ||
13907                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13908                         return -EINVAL;
13909                 memcpy(params.ssid.ssid,
13910                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13911                        params.ssid.ssid_len);
13912         }
13913
13914         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13915                ETH_ALEN);
13916
13917         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13918
13919         if (info->attrs[NL80211_ATTR_PMKID])
13920                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13921
13922         return rdev_external_auth(rdev, dev, &params);
13923 }
13924
13925 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13926 {
13927         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
13928         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13929         struct net_device *dev = info->user_ptr[1];
13930         struct wireless_dev *wdev = dev->ieee80211_ptr;
13931         const u8 *buf;
13932         size_t len;
13933         u8 *dest;
13934         u16 proto;
13935         bool noencrypt;
13936         u64 cookie = 0;
13937         int err;
13938
13939         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13940                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13941                 return -EOPNOTSUPP;
13942
13943         if (!rdev->ops->tx_control_port)
13944                 return -EOPNOTSUPP;
13945
13946         if (!info->attrs[NL80211_ATTR_FRAME] ||
13947             !info->attrs[NL80211_ATTR_MAC] ||
13948             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13949                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13950                 return -EINVAL;
13951         }
13952
13953         wdev_lock(wdev);
13954
13955         switch (wdev->iftype) {
13956         case NL80211_IFTYPE_AP:
13957         case NL80211_IFTYPE_P2P_GO:
13958         case NL80211_IFTYPE_MESH_POINT:
13959                 break;
13960         case NL80211_IFTYPE_ADHOC:
13961         case NL80211_IFTYPE_STATION:
13962         case NL80211_IFTYPE_P2P_CLIENT:
13963                 if (wdev->current_bss)
13964                         break;
13965                 err = -ENOTCONN;
13966                 goto out;
13967         default:
13968                 err = -EOPNOTSUPP;
13969                 goto out;
13970         }
13971
13972         wdev_unlock(wdev);
13973
13974         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13975         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13976         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13977         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13978         noencrypt =
13979                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13980
13981         err = rdev_tx_control_port(rdev, dev, buf, len,
13982                                    dest, cpu_to_be16(proto), noencrypt,
13983                                    dont_wait_for_ack ? NULL : &cookie);
13984         if (!err && !dont_wait_for_ack)
13985                 nl_set_extack_cookie_u64(info->extack, cookie);
13986         return err;
13987  out:
13988         wdev_unlock(wdev);
13989         return err;
13990 }
13991
13992 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13993                                            struct genl_info *info)
13994 {
13995         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13996         struct net_device *dev = info->user_ptr[1];
13997         struct wireless_dev *wdev = dev->ieee80211_ptr;
13998         struct cfg80211_ftm_responder_stats ftm_stats = {};
13999         struct sk_buff *msg;
14000         void *hdr;
14001         struct nlattr *ftm_stats_attr;
14002         int err;
14003
14004         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14005                 return -EOPNOTSUPP;
14006
14007         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14008         if (err)
14009                 return err;
14010
14011         if (!ftm_stats.filled)
14012                 return -ENODATA;
14013
14014         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14015         if (!msg)
14016                 return -ENOMEM;
14017
14018         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14019                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14020         if (!hdr)
14021                 goto nla_put_failure;
14022
14023         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14024                 goto nla_put_failure;
14025
14026         ftm_stats_attr = nla_nest_start_noflag(msg,
14027                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14028         if (!ftm_stats_attr)
14029                 goto nla_put_failure;
14030
14031 #define SET_FTM(field, name, type)                                       \
14032         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14033             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14034                              ftm_stats.field))                           \
14035                 goto nla_put_failure; } while (0)
14036 #define SET_FTM_U64(field, name)                                         \
14037         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14038             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14039                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14040                 goto nla_put_failure; } while (0)
14041
14042         SET_FTM(success_num, SUCCESS_NUM, u32);
14043         SET_FTM(partial_num, PARTIAL_NUM, u32);
14044         SET_FTM(failed_num, FAILED_NUM, u32);
14045         SET_FTM(asap_num, ASAP_NUM, u32);
14046         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14047         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14048         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14049         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14050         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14051 #undef SET_FTM
14052
14053         nla_nest_end(msg, ftm_stats_attr);
14054
14055         genlmsg_end(msg, hdr);
14056         return genlmsg_reply(msg, info);
14057
14058 nla_put_failure:
14059         nlmsg_free(msg);
14060         return -ENOBUFS;
14061 }
14062
14063 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14064 {
14065         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14066         struct cfg80211_update_owe_info owe_info;
14067         struct net_device *dev = info->user_ptr[1];
14068
14069         if (!rdev->ops->update_owe_info)
14070                 return -EOPNOTSUPP;
14071
14072         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14073             !info->attrs[NL80211_ATTR_MAC])
14074                 return -EINVAL;
14075
14076         memset(&owe_info, 0, sizeof(owe_info));
14077         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14078         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14079
14080         if (info->attrs[NL80211_ATTR_IE]) {
14081                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14082                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14083         }
14084
14085         return rdev_update_owe_info(rdev, dev, &owe_info);
14086 }
14087
14088 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14089 {
14090         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14091         struct net_device *dev = info->user_ptr[1];
14092         struct wireless_dev *wdev = dev->ieee80211_ptr;
14093         struct station_info sinfo = {};
14094         const u8 *buf;
14095         size_t len;
14096         u8 *dest;
14097         int err;
14098
14099         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14100                 return -EOPNOTSUPP;
14101
14102         if (!info->attrs[NL80211_ATTR_MAC] ||
14103             !info->attrs[NL80211_ATTR_FRAME]) {
14104                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14105                 return -EINVAL;
14106         }
14107
14108         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14109                 return -EOPNOTSUPP;
14110
14111         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14112         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14113         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14114
14115         if (len < sizeof(struct ethhdr))
14116                 return -EINVAL;
14117
14118         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14119             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14120                 return -EINVAL;
14121
14122         err = rdev_get_station(rdev, dev, dest, &sinfo);
14123         if (err)
14124                 return err;
14125
14126         cfg80211_sinfo_release_content(&sinfo);
14127
14128         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14129 }
14130
14131 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14132                           struct nlattr *attrs[], struct net_device *dev,
14133                           struct cfg80211_tid_cfg *tid_conf,
14134                           struct genl_info *info, const u8 *peer)
14135 {
14136         struct netlink_ext_ack *extack = info->extack;
14137         u64 mask;
14138         int err;
14139
14140         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14141                 return -EINVAL;
14142
14143         tid_conf->config_override =
14144                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14145         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14146
14147         if (tid_conf->config_override) {
14148                 if (rdev->ops->reset_tid_config) {
14149                         err = rdev_reset_tid_config(rdev, dev, peer,
14150                                                     tid_conf->tids);
14151                         if (err)
14152                                 return err;
14153                 } else {
14154                         return -EINVAL;
14155                 }
14156         }
14157
14158         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14159                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14160                 tid_conf->noack =
14161                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14162         }
14163
14164         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14165                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14166                 tid_conf->retry_short =
14167                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14168
14169                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14170                         return -EINVAL;
14171         }
14172
14173         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14174                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14175                 tid_conf->retry_long =
14176                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14177
14178                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14179                         return -EINVAL;
14180         }
14181
14182         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14183                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14184                 tid_conf->ampdu =
14185                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14186         }
14187
14188         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14189                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14190                 tid_conf->rtscts =
14191                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14192         }
14193
14194         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14195                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14196                 tid_conf->amsdu =
14197                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14198         }
14199
14200         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14201                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14202
14203                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14204
14205                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14206                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14207                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14208                                                     &tid_conf->txrate_mask);
14209                         if (err)
14210                                 return err;
14211
14212                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14213                 }
14214                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14215         }
14216
14217         if (peer)
14218                 mask = rdev->wiphy.tid_config_support.peer;
14219         else
14220                 mask = rdev->wiphy.tid_config_support.vif;
14221
14222         if (tid_conf->mask & ~mask) {
14223                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14224                 return -ENOTSUPP;
14225         }
14226
14227         return 0;
14228 }
14229
14230 static int nl80211_set_tid_config(struct sk_buff *skb,
14231                                   struct genl_info *info)
14232 {
14233         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14234         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14235         struct net_device *dev = info->user_ptr[1];
14236         struct cfg80211_tid_config *tid_config;
14237         struct nlattr *tid;
14238         int conf_idx = 0, rem_conf;
14239         int ret = -EINVAL;
14240         u32 num_conf = 0;
14241
14242         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14243                 return -EINVAL;
14244
14245         if (!rdev->ops->set_tid_config)
14246                 return -EOPNOTSUPP;
14247
14248         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14249                             rem_conf)
14250                 num_conf++;
14251
14252         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14253                              GFP_KERNEL);
14254         if (!tid_config)
14255                 return -ENOMEM;
14256
14257         tid_config->n_tid_conf = num_conf;
14258
14259         if (info->attrs[NL80211_ATTR_MAC])
14260                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14261
14262         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14263                             rem_conf) {
14264                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14265                                        tid, NULL, NULL);
14266
14267                 if (ret)
14268                         goto bad_tid_conf;
14269
14270                 ret = parse_tid_conf(rdev, attrs, dev,
14271                                      &tid_config->tid_conf[conf_idx],
14272                                      info, tid_config->peer);
14273                 if (ret)
14274                         goto bad_tid_conf;
14275
14276                 conf_idx++;
14277         }
14278
14279         ret = rdev_set_tid_config(rdev, dev, tid_config);
14280
14281 bad_tid_conf:
14282         kfree(tid_config);
14283         return ret;
14284 }
14285
14286 #define NL80211_FLAG_NEED_WIPHY         0x01
14287 #define NL80211_FLAG_NEED_NETDEV        0x02
14288 #define NL80211_FLAG_NEED_RTNL          0x04
14289 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14290 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14291                                          NL80211_FLAG_CHECK_NETDEV_UP)
14292 #define NL80211_FLAG_NEED_WDEV          0x10
14293 /* If a netdev is associated, it must be UP, P2P must be started */
14294 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14295                                          NL80211_FLAG_CHECK_NETDEV_UP)
14296 #define NL80211_FLAG_CLEAR_SKB          0x20
14297
14298 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14299                             struct genl_info *info)
14300 {
14301         struct cfg80211_registered_device *rdev;
14302         struct wireless_dev *wdev;
14303         struct net_device *dev;
14304         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14305
14306         if (rtnl)
14307                 rtnl_lock();
14308
14309         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14310                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14311                 if (IS_ERR(rdev)) {
14312                         if (rtnl)
14313                                 rtnl_unlock();
14314                         return PTR_ERR(rdev);
14315                 }
14316                 info->user_ptr[0] = rdev;
14317         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14318                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14319                 ASSERT_RTNL();
14320
14321                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14322                                                   info->attrs);
14323                 if (IS_ERR(wdev)) {
14324                         if (rtnl)
14325                                 rtnl_unlock();
14326                         return PTR_ERR(wdev);
14327                 }
14328
14329                 dev = wdev->netdev;
14330                 rdev = wiphy_to_rdev(wdev->wiphy);
14331
14332                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14333                         if (!dev) {
14334                                 if (rtnl)
14335                                         rtnl_unlock();
14336                                 return -EINVAL;
14337                         }
14338
14339                         info->user_ptr[1] = dev;
14340                 } else {
14341                         info->user_ptr[1] = wdev;
14342                 }
14343
14344                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14345                     !wdev_running(wdev)) {
14346                         if (rtnl)
14347                                 rtnl_unlock();
14348                         return -ENETDOWN;
14349                 }
14350
14351                 if (dev)
14352                         dev_hold(dev);
14353
14354                 info->user_ptr[0] = rdev;
14355         }
14356
14357         return 0;
14358 }
14359
14360 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14361                               struct genl_info *info)
14362 {
14363         if (info->user_ptr[1]) {
14364                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14365                         struct wireless_dev *wdev = info->user_ptr[1];
14366
14367                         if (wdev->netdev)
14368                                 dev_put(wdev->netdev);
14369                 } else {
14370                         dev_put(info->user_ptr[1]);
14371                 }
14372         }
14373
14374         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14375                 rtnl_unlock();
14376
14377         /* If needed, clear the netlink message payload from the SKB
14378          * as it might contain key data that shouldn't stick around on
14379          * the heap after the SKB is freed. The netlink message header
14380          * is still needed for further processing, so leave it intact.
14381          */
14382         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14383                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14384
14385                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14386         }
14387 }
14388
14389 static const struct genl_ops nl80211_ops[] = {
14390         {
14391                 .cmd = NL80211_CMD_GET_WIPHY,
14392                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14393                 .doit = nl80211_get_wiphy,
14394                 .dumpit = nl80211_dump_wiphy,
14395                 .done = nl80211_dump_wiphy_done,
14396                 /* can be retrieved by unprivileged users */
14397                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14398                                   NL80211_FLAG_NEED_RTNL,
14399         },
14400         {
14401                 .cmd = NL80211_CMD_SET_WIPHY,
14402                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14403                 .doit = nl80211_set_wiphy,
14404                 .flags = GENL_UNS_ADMIN_PERM,
14405                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14406         },
14407         {
14408                 .cmd = NL80211_CMD_GET_INTERFACE,
14409                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14410                 .doit = nl80211_get_interface,
14411                 .dumpit = nl80211_dump_interface,
14412                 /* can be retrieved by unprivileged users */
14413                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14414                                   NL80211_FLAG_NEED_RTNL,
14415         },
14416         {
14417                 .cmd = NL80211_CMD_SET_INTERFACE,
14418                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14419                 .doit = nl80211_set_interface,
14420                 .flags = GENL_UNS_ADMIN_PERM,
14421                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14422                                   NL80211_FLAG_NEED_RTNL,
14423         },
14424         {
14425                 .cmd = NL80211_CMD_NEW_INTERFACE,
14426                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14427                 .doit = nl80211_new_interface,
14428                 .flags = GENL_UNS_ADMIN_PERM,
14429                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14430                                   NL80211_FLAG_NEED_RTNL,
14431         },
14432         {
14433                 .cmd = NL80211_CMD_DEL_INTERFACE,
14434                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14435                 .doit = nl80211_del_interface,
14436                 .flags = GENL_UNS_ADMIN_PERM,
14437                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14438                                   NL80211_FLAG_NEED_RTNL,
14439         },
14440         {
14441                 .cmd = NL80211_CMD_GET_KEY,
14442                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14443                 .doit = nl80211_get_key,
14444                 .flags = GENL_UNS_ADMIN_PERM,
14445                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14446                                   NL80211_FLAG_NEED_RTNL,
14447         },
14448         {
14449                 .cmd = NL80211_CMD_SET_KEY,
14450                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14451                 .doit = nl80211_set_key,
14452                 .flags = GENL_UNS_ADMIN_PERM,
14453                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14454                                   NL80211_FLAG_NEED_RTNL |
14455                                   NL80211_FLAG_CLEAR_SKB,
14456         },
14457         {
14458                 .cmd = NL80211_CMD_NEW_KEY,
14459                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14460                 .doit = nl80211_new_key,
14461                 .flags = GENL_UNS_ADMIN_PERM,
14462                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14463                                   NL80211_FLAG_NEED_RTNL |
14464                                   NL80211_FLAG_CLEAR_SKB,
14465         },
14466         {
14467                 .cmd = NL80211_CMD_DEL_KEY,
14468                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14469                 .doit = nl80211_del_key,
14470                 .flags = GENL_UNS_ADMIN_PERM,
14471                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14472                                   NL80211_FLAG_NEED_RTNL,
14473         },
14474         {
14475                 .cmd = NL80211_CMD_SET_BEACON,
14476                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14477                 .flags = GENL_UNS_ADMIN_PERM,
14478                 .doit = nl80211_set_beacon,
14479                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14480                                   NL80211_FLAG_NEED_RTNL,
14481         },
14482         {
14483                 .cmd = NL80211_CMD_START_AP,
14484                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14485                 .flags = GENL_UNS_ADMIN_PERM,
14486                 .doit = nl80211_start_ap,
14487                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14488                                   NL80211_FLAG_NEED_RTNL,
14489         },
14490         {
14491                 .cmd = NL80211_CMD_STOP_AP,
14492                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14493                 .flags = GENL_UNS_ADMIN_PERM,
14494                 .doit = nl80211_stop_ap,
14495                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14496                                   NL80211_FLAG_NEED_RTNL,
14497         },
14498         {
14499                 .cmd = NL80211_CMD_GET_STATION,
14500                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14501                 .doit = nl80211_get_station,
14502                 .dumpit = nl80211_dump_station,
14503                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14504                                   NL80211_FLAG_NEED_RTNL,
14505         },
14506         {
14507                 .cmd = NL80211_CMD_SET_STATION,
14508                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14509                 .doit = nl80211_set_station,
14510                 .flags = GENL_UNS_ADMIN_PERM,
14511                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14512                                   NL80211_FLAG_NEED_RTNL,
14513         },
14514         {
14515                 .cmd = NL80211_CMD_NEW_STATION,
14516                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14517                 .doit = nl80211_new_station,
14518                 .flags = GENL_UNS_ADMIN_PERM,
14519                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14520                                   NL80211_FLAG_NEED_RTNL,
14521         },
14522         {
14523                 .cmd = NL80211_CMD_DEL_STATION,
14524                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14525                 .doit = nl80211_del_station,
14526                 .flags = GENL_UNS_ADMIN_PERM,
14527                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14528                                   NL80211_FLAG_NEED_RTNL,
14529         },
14530         {
14531                 .cmd = NL80211_CMD_GET_MPATH,
14532                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14533                 .doit = nl80211_get_mpath,
14534                 .dumpit = nl80211_dump_mpath,
14535                 .flags = GENL_UNS_ADMIN_PERM,
14536                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14537                                   NL80211_FLAG_NEED_RTNL,
14538         },
14539         {
14540                 .cmd = NL80211_CMD_GET_MPP,
14541                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14542                 .doit = nl80211_get_mpp,
14543                 .dumpit = nl80211_dump_mpp,
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_MPATH,
14550                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14551                 .doit = nl80211_set_mpath,
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_NEW_MPATH,
14558                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14559                 .doit = nl80211_new_mpath,
14560                 .flags = GENL_UNS_ADMIN_PERM,
14561                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14562                                   NL80211_FLAG_NEED_RTNL,
14563         },
14564         {
14565                 .cmd = NL80211_CMD_DEL_MPATH,
14566                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14567                 .doit = nl80211_del_mpath,
14568                 .flags = GENL_UNS_ADMIN_PERM,
14569                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14570                                   NL80211_FLAG_NEED_RTNL,
14571         },
14572         {
14573                 .cmd = NL80211_CMD_SET_BSS,
14574                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14575                 .doit = nl80211_set_bss,
14576                 .flags = GENL_UNS_ADMIN_PERM,
14577                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14578                                   NL80211_FLAG_NEED_RTNL,
14579         },
14580         {
14581                 .cmd = NL80211_CMD_GET_REG,
14582                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14583                 .doit = nl80211_get_reg_do,
14584                 .dumpit = nl80211_get_reg_dump,
14585                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14586                 /* can be retrieved by unprivileged users */
14587         },
14588 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14589         {
14590                 .cmd = NL80211_CMD_SET_REG,
14591                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14592                 .doit = nl80211_set_reg,
14593                 .flags = GENL_ADMIN_PERM,
14594                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14595         },
14596 #endif
14597         {
14598                 .cmd = NL80211_CMD_REQ_SET_REG,
14599                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14600                 .doit = nl80211_req_set_reg,
14601                 .flags = GENL_ADMIN_PERM,
14602         },
14603         {
14604                 .cmd = NL80211_CMD_RELOAD_REGDB,
14605                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14606                 .doit = nl80211_reload_regdb,
14607                 .flags = GENL_ADMIN_PERM,
14608         },
14609         {
14610                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14611                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14612                 .doit = nl80211_get_mesh_config,
14613                 /* can be retrieved by unprivileged users */
14614                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14615                                   NL80211_FLAG_NEED_RTNL,
14616         },
14617         {
14618                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14619                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14620                 .doit = nl80211_update_mesh_config,
14621                 .flags = GENL_UNS_ADMIN_PERM,
14622                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14623                                   NL80211_FLAG_NEED_RTNL,
14624         },
14625         {
14626                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14627                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14628                 .doit = nl80211_trigger_scan,
14629                 .flags = GENL_UNS_ADMIN_PERM,
14630                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14631                                   NL80211_FLAG_NEED_RTNL,
14632         },
14633         {
14634                 .cmd = NL80211_CMD_ABORT_SCAN,
14635                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14636                 .doit = nl80211_abort_scan,
14637                 .flags = GENL_UNS_ADMIN_PERM,
14638                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14639                                   NL80211_FLAG_NEED_RTNL,
14640         },
14641         {
14642                 .cmd = NL80211_CMD_GET_SCAN,
14643                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14644                 .dumpit = nl80211_dump_scan,
14645         },
14646         {
14647                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14648                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14649                 .doit = nl80211_start_sched_scan,
14650                 .flags = GENL_UNS_ADMIN_PERM,
14651                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14652                                   NL80211_FLAG_NEED_RTNL,
14653         },
14654         {
14655                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14656                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14657                 .doit = nl80211_stop_sched_scan,
14658                 .flags = GENL_UNS_ADMIN_PERM,
14659                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14660                                   NL80211_FLAG_NEED_RTNL,
14661         },
14662         {
14663                 .cmd = NL80211_CMD_AUTHENTICATE,
14664                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14665                 .doit = nl80211_authenticate,
14666                 .flags = GENL_UNS_ADMIN_PERM,
14667                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14668                                   NL80211_FLAG_NEED_RTNL |
14669                                   NL80211_FLAG_CLEAR_SKB,
14670         },
14671         {
14672                 .cmd = NL80211_CMD_ASSOCIATE,
14673                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14674                 .doit = nl80211_associate,
14675                 .flags = GENL_UNS_ADMIN_PERM,
14676                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14677                                   NL80211_FLAG_NEED_RTNL |
14678                                   NL80211_FLAG_CLEAR_SKB,
14679         },
14680         {
14681                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14682                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14683                 .doit = nl80211_deauthenticate,
14684                 .flags = GENL_UNS_ADMIN_PERM,
14685                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14686                                   NL80211_FLAG_NEED_RTNL,
14687         },
14688         {
14689                 .cmd = NL80211_CMD_DISASSOCIATE,
14690                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14691                 .doit = nl80211_disassociate,
14692                 .flags = GENL_UNS_ADMIN_PERM,
14693                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14694                                   NL80211_FLAG_NEED_RTNL,
14695         },
14696         {
14697                 .cmd = NL80211_CMD_JOIN_IBSS,
14698                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14699                 .doit = nl80211_join_ibss,
14700                 .flags = GENL_UNS_ADMIN_PERM,
14701                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14702                                   NL80211_FLAG_NEED_RTNL,
14703         },
14704         {
14705                 .cmd = NL80211_CMD_LEAVE_IBSS,
14706                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14707                 .doit = nl80211_leave_ibss,
14708                 .flags = GENL_UNS_ADMIN_PERM,
14709                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14710                                   NL80211_FLAG_NEED_RTNL,
14711         },
14712 #ifdef CONFIG_NL80211_TESTMODE
14713         {
14714                 .cmd = NL80211_CMD_TESTMODE,
14715                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14716                 .doit = nl80211_testmode_do,
14717                 .dumpit = nl80211_testmode_dump,
14718                 .flags = GENL_UNS_ADMIN_PERM,
14719                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14720                                   NL80211_FLAG_NEED_RTNL,
14721         },
14722 #endif
14723         {
14724                 .cmd = NL80211_CMD_CONNECT,
14725                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14726                 .doit = nl80211_connect,
14727                 .flags = GENL_UNS_ADMIN_PERM,
14728                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14729                                   NL80211_FLAG_NEED_RTNL |
14730                                   NL80211_FLAG_CLEAR_SKB,
14731         },
14732         {
14733                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14734                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14735                 .doit = nl80211_update_connect_params,
14736                 .flags = GENL_ADMIN_PERM,
14737                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14738                                   NL80211_FLAG_NEED_RTNL |
14739                                   NL80211_FLAG_CLEAR_SKB,
14740         },
14741         {
14742                 .cmd = NL80211_CMD_DISCONNECT,
14743                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14744                 .doit = nl80211_disconnect,
14745                 .flags = GENL_UNS_ADMIN_PERM,
14746                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14747                                   NL80211_FLAG_NEED_RTNL,
14748         },
14749         {
14750                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14751                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14752                 .doit = nl80211_wiphy_netns,
14753                 .flags = GENL_UNS_ADMIN_PERM,
14754                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14755                                   NL80211_FLAG_NEED_RTNL,
14756         },
14757         {
14758                 .cmd = NL80211_CMD_GET_SURVEY,
14759                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14760                 .dumpit = nl80211_dump_survey,
14761         },
14762         {
14763                 .cmd = NL80211_CMD_SET_PMKSA,
14764                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14765                 .doit = nl80211_setdel_pmksa,
14766                 .flags = GENL_UNS_ADMIN_PERM,
14767                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14768                                   NL80211_FLAG_NEED_RTNL |
14769                                   NL80211_FLAG_CLEAR_SKB,
14770         },
14771         {
14772                 .cmd = NL80211_CMD_DEL_PMKSA,
14773                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14774                 .doit = nl80211_setdel_pmksa,
14775                 .flags = GENL_UNS_ADMIN_PERM,
14776                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14777                                   NL80211_FLAG_NEED_RTNL,
14778         },
14779         {
14780                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14781                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14782                 .doit = nl80211_flush_pmksa,
14783                 .flags = GENL_UNS_ADMIN_PERM,
14784                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14785                                   NL80211_FLAG_NEED_RTNL,
14786         },
14787         {
14788                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14789                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14790                 .doit = nl80211_remain_on_channel,
14791                 .flags = GENL_UNS_ADMIN_PERM,
14792                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14793                                   NL80211_FLAG_NEED_RTNL,
14794         },
14795         {
14796                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14797                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14798                 .doit = nl80211_cancel_remain_on_channel,
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_SET_TX_BITRATE_MASK,
14805                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14806                 .doit = nl80211_set_tx_bitrate_mask,
14807                 .flags = GENL_UNS_ADMIN_PERM,
14808                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14809                                   NL80211_FLAG_NEED_RTNL,
14810         },
14811         {
14812                 .cmd = NL80211_CMD_REGISTER_FRAME,
14813                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14814                 .doit = nl80211_register_mgmt,
14815                 .flags = GENL_UNS_ADMIN_PERM,
14816                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14817                                   NL80211_FLAG_NEED_RTNL,
14818         },
14819         {
14820                 .cmd = NL80211_CMD_FRAME,
14821                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14822                 .doit = nl80211_tx_mgmt,
14823                 .flags = GENL_UNS_ADMIN_PERM,
14824                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14825                                   NL80211_FLAG_NEED_RTNL,
14826         },
14827         {
14828                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14829                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14830                 .doit = nl80211_tx_mgmt_cancel_wait,
14831                 .flags = GENL_UNS_ADMIN_PERM,
14832                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14833                                   NL80211_FLAG_NEED_RTNL,
14834         },
14835         {
14836                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14837                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14838                 .doit = nl80211_set_power_save,
14839                 .flags = GENL_UNS_ADMIN_PERM,
14840                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14841                                   NL80211_FLAG_NEED_RTNL,
14842         },
14843         {
14844                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14845                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14846                 .doit = nl80211_get_power_save,
14847                 /* can be retrieved by unprivileged users */
14848                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14849                                   NL80211_FLAG_NEED_RTNL,
14850         },
14851         {
14852                 .cmd = NL80211_CMD_SET_CQM,
14853                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14854                 .doit = nl80211_set_cqm,
14855                 .flags = GENL_UNS_ADMIN_PERM,
14856                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14857                                   NL80211_FLAG_NEED_RTNL,
14858         },
14859         {
14860                 .cmd = NL80211_CMD_SET_CHANNEL,
14861                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14862                 .doit = nl80211_set_channel,
14863                 .flags = GENL_UNS_ADMIN_PERM,
14864                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14865                                   NL80211_FLAG_NEED_RTNL,
14866         },
14867         {
14868                 .cmd = NL80211_CMD_SET_WDS_PEER,
14869                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14870                 .doit = nl80211_set_wds_peer,
14871                 .flags = GENL_UNS_ADMIN_PERM,
14872                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14873                                   NL80211_FLAG_NEED_RTNL,
14874         },
14875         {
14876                 .cmd = NL80211_CMD_JOIN_MESH,
14877                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14878                 .doit = nl80211_join_mesh,
14879                 .flags = GENL_UNS_ADMIN_PERM,
14880                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14881                                   NL80211_FLAG_NEED_RTNL,
14882         },
14883         {
14884                 .cmd = NL80211_CMD_LEAVE_MESH,
14885                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14886                 .doit = nl80211_leave_mesh,
14887                 .flags = GENL_UNS_ADMIN_PERM,
14888                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14889                                   NL80211_FLAG_NEED_RTNL,
14890         },
14891         {
14892                 .cmd = NL80211_CMD_JOIN_OCB,
14893                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14894                 .doit = nl80211_join_ocb,
14895                 .flags = GENL_UNS_ADMIN_PERM,
14896                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14897                                   NL80211_FLAG_NEED_RTNL,
14898         },
14899         {
14900                 .cmd = NL80211_CMD_LEAVE_OCB,
14901                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14902                 .doit = nl80211_leave_ocb,
14903                 .flags = GENL_UNS_ADMIN_PERM,
14904                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14905                                   NL80211_FLAG_NEED_RTNL,
14906         },
14907 #ifdef CONFIG_PM
14908         {
14909                 .cmd = NL80211_CMD_GET_WOWLAN,
14910                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14911                 .doit = nl80211_get_wowlan,
14912                 /* can be retrieved by unprivileged users */
14913                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14914                                   NL80211_FLAG_NEED_RTNL,
14915         },
14916         {
14917                 .cmd = NL80211_CMD_SET_WOWLAN,
14918                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14919                 .doit = nl80211_set_wowlan,
14920                 .flags = GENL_UNS_ADMIN_PERM,
14921                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14922                                   NL80211_FLAG_NEED_RTNL,
14923         },
14924 #endif
14925         {
14926                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14927                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14928                 .doit = nl80211_set_rekey_data,
14929                 .flags = GENL_UNS_ADMIN_PERM,
14930                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14931                                   NL80211_FLAG_NEED_RTNL |
14932                                   NL80211_FLAG_CLEAR_SKB,
14933         },
14934         {
14935                 .cmd = NL80211_CMD_TDLS_MGMT,
14936                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14937                 .doit = nl80211_tdls_mgmt,
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_TDLS_OPER,
14944                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14945                 .doit = nl80211_tdls_oper,
14946                 .flags = GENL_UNS_ADMIN_PERM,
14947                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14948                                   NL80211_FLAG_NEED_RTNL,
14949         },
14950         {
14951                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14952                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14953                 .doit = nl80211_register_unexpected_frame,
14954                 .flags = GENL_UNS_ADMIN_PERM,
14955                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14956                                   NL80211_FLAG_NEED_RTNL,
14957         },
14958         {
14959                 .cmd = NL80211_CMD_PROBE_CLIENT,
14960                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14961                 .doit = nl80211_probe_client,
14962                 .flags = GENL_UNS_ADMIN_PERM,
14963                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14964                                   NL80211_FLAG_NEED_RTNL,
14965         },
14966         {
14967                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14968                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14969                 .doit = nl80211_register_beacons,
14970                 .flags = GENL_UNS_ADMIN_PERM,
14971                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14972                                   NL80211_FLAG_NEED_RTNL,
14973         },
14974         {
14975                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14976                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14977                 .doit = nl80211_set_noack_map,
14978                 .flags = GENL_UNS_ADMIN_PERM,
14979                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14980                                   NL80211_FLAG_NEED_RTNL,
14981         },
14982         {
14983                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14984                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14985                 .doit = nl80211_start_p2p_device,
14986                 .flags = GENL_UNS_ADMIN_PERM,
14987                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14988                                   NL80211_FLAG_NEED_RTNL,
14989         },
14990         {
14991                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14992                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14993                 .doit = nl80211_stop_p2p_device,
14994                 .flags = GENL_UNS_ADMIN_PERM,
14995                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14996                                   NL80211_FLAG_NEED_RTNL,
14997         },
14998         {
14999                 .cmd = NL80211_CMD_START_NAN,
15000                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15001                 .doit = nl80211_start_nan,
15002                 .flags = GENL_ADMIN_PERM,
15003                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15004                                   NL80211_FLAG_NEED_RTNL,
15005         },
15006         {
15007                 .cmd = NL80211_CMD_STOP_NAN,
15008                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15009                 .doit = nl80211_stop_nan,
15010                 .flags = GENL_ADMIN_PERM,
15011                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15012                                   NL80211_FLAG_NEED_RTNL,
15013         },
15014         {
15015                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15016                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15017                 .doit = nl80211_nan_add_func,
15018                 .flags = GENL_ADMIN_PERM,
15019                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15020                                   NL80211_FLAG_NEED_RTNL,
15021         },
15022         {
15023                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15024                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15025                 .doit = nl80211_nan_del_func,
15026                 .flags = GENL_ADMIN_PERM,
15027                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15028                                   NL80211_FLAG_NEED_RTNL,
15029         },
15030         {
15031                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15032                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15033                 .doit = nl80211_nan_change_config,
15034                 .flags = GENL_ADMIN_PERM,
15035                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15036                                   NL80211_FLAG_NEED_RTNL,
15037         },
15038         {
15039                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15040                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15041                 .doit = nl80211_set_mcast_rate,
15042                 .flags = GENL_UNS_ADMIN_PERM,
15043                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15044                                   NL80211_FLAG_NEED_RTNL,
15045         },
15046         {
15047                 .cmd = NL80211_CMD_SET_MAC_ACL,
15048                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15049                 .doit = nl80211_set_mac_acl,
15050                 .flags = GENL_UNS_ADMIN_PERM,
15051                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15052                                   NL80211_FLAG_NEED_RTNL,
15053         },
15054         {
15055                 .cmd = NL80211_CMD_RADAR_DETECT,
15056                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15057                 .doit = nl80211_start_radar_detection,
15058                 .flags = GENL_UNS_ADMIN_PERM,
15059                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15060                                   NL80211_FLAG_NEED_RTNL,
15061         },
15062         {
15063                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15064                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15065                 .doit = nl80211_get_protocol_features,
15066         },
15067         {
15068                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15069                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15070                 .doit = nl80211_update_ft_ies,
15071                 .flags = GENL_UNS_ADMIN_PERM,
15072                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15073                                   NL80211_FLAG_NEED_RTNL,
15074         },
15075         {
15076                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15077                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15078                 .doit = nl80211_crit_protocol_start,
15079                 .flags = GENL_UNS_ADMIN_PERM,
15080                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15081                                   NL80211_FLAG_NEED_RTNL,
15082         },
15083         {
15084                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15085                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15086                 .doit = nl80211_crit_protocol_stop,
15087                 .flags = GENL_UNS_ADMIN_PERM,
15088                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15089                                   NL80211_FLAG_NEED_RTNL,
15090         },
15091         {
15092                 .cmd = NL80211_CMD_GET_COALESCE,
15093                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15094                 .doit = nl80211_get_coalesce,
15095                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15096                                   NL80211_FLAG_NEED_RTNL,
15097         },
15098         {
15099                 .cmd = NL80211_CMD_SET_COALESCE,
15100                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15101                 .doit = nl80211_set_coalesce,
15102                 .flags = GENL_UNS_ADMIN_PERM,
15103                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15104                                   NL80211_FLAG_NEED_RTNL,
15105         },
15106         {
15107                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15108                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15109                 .doit = nl80211_channel_switch,
15110                 .flags = GENL_UNS_ADMIN_PERM,
15111                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15112                                   NL80211_FLAG_NEED_RTNL,
15113         },
15114         {
15115                 .cmd = NL80211_CMD_VENDOR,
15116                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15117                 .doit = nl80211_vendor_cmd,
15118                 .dumpit = nl80211_vendor_cmd_dump,
15119                 .flags = GENL_UNS_ADMIN_PERM,
15120                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15121                                   NL80211_FLAG_NEED_RTNL |
15122                                   NL80211_FLAG_CLEAR_SKB,
15123         },
15124         {
15125                 .cmd = NL80211_CMD_SET_QOS_MAP,
15126                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15127                 .doit = nl80211_set_qos_map,
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_ADD_TX_TS,
15134                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15135                 .doit = nl80211_add_tx_ts,
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_DEL_TX_TS,
15142                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15143                 .doit = nl80211_del_tx_ts,
15144                 .flags = GENL_UNS_ADMIN_PERM,
15145                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15146                                   NL80211_FLAG_NEED_RTNL,
15147         },
15148         {
15149                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15150                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15151                 .doit = nl80211_tdls_channel_switch,
15152                 .flags = GENL_UNS_ADMIN_PERM,
15153                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15154                                   NL80211_FLAG_NEED_RTNL,
15155         },
15156         {
15157                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15158                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15159                 .doit = nl80211_tdls_cancel_channel_switch,
15160                 .flags = GENL_UNS_ADMIN_PERM,
15161                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15162                                   NL80211_FLAG_NEED_RTNL,
15163         },
15164         {
15165                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15166                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15167                 .doit = nl80211_set_multicast_to_unicast,
15168                 .flags = GENL_UNS_ADMIN_PERM,
15169                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15170                                   NL80211_FLAG_NEED_RTNL,
15171         },
15172         {
15173                 .cmd = NL80211_CMD_SET_PMK,
15174                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15175                 .doit = nl80211_set_pmk,
15176                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15177                                   NL80211_FLAG_NEED_RTNL |
15178                                   NL80211_FLAG_CLEAR_SKB,
15179         },
15180         {
15181                 .cmd = NL80211_CMD_DEL_PMK,
15182                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15183                 .doit = nl80211_del_pmk,
15184                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15185                                   NL80211_FLAG_NEED_RTNL,
15186         },
15187         {
15188                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15189                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15190                 .doit = nl80211_external_auth,
15191                 .flags = GENL_ADMIN_PERM,
15192                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15193                                   NL80211_FLAG_NEED_RTNL,
15194         },
15195         {
15196                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15197                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15198                 .doit = nl80211_tx_control_port,
15199                 .flags = GENL_UNS_ADMIN_PERM,
15200                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15201                                   NL80211_FLAG_NEED_RTNL,
15202         },
15203         {
15204                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15205                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15206                 .doit = nl80211_get_ftm_responder_stats,
15207                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15208                                   NL80211_FLAG_NEED_RTNL,
15209         },
15210         {
15211                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15212                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15213                 .doit = nl80211_pmsr_start,
15214                 .flags = GENL_UNS_ADMIN_PERM,
15215                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15216                                   NL80211_FLAG_NEED_RTNL,
15217         },
15218         {
15219                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15220                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15221                 .doit = nl80211_notify_radar_detection,
15222                 .flags = GENL_UNS_ADMIN_PERM,
15223                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15224                                   NL80211_FLAG_NEED_RTNL,
15225         },
15226         {
15227                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15228                 .doit = nl80211_update_owe_info,
15229                 .flags = GENL_ADMIN_PERM,
15230                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15231                                   NL80211_FLAG_NEED_RTNL,
15232         },
15233         {
15234                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15235                 .doit = nl80211_probe_mesh_link,
15236                 .flags = GENL_UNS_ADMIN_PERM,
15237                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15238                                   NL80211_FLAG_NEED_RTNL,
15239         },
15240         {
15241                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15242                 .doit = nl80211_set_tid_config,
15243                 .flags = GENL_UNS_ADMIN_PERM,
15244                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15245                                   NL80211_FLAG_NEED_RTNL,
15246         },
15247 };
15248
15249 static struct genl_family nl80211_fam __ro_after_init = {
15250         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15251         .hdrsize = 0,                   /* no private header */
15252         .version = 1,                   /* no particular meaning now */
15253         .maxattr = NL80211_ATTR_MAX,
15254         .policy = nl80211_policy,
15255         .netnsok = true,
15256         .pre_doit = nl80211_pre_doit,
15257         .post_doit = nl80211_post_doit,
15258         .module = THIS_MODULE,
15259         .ops = nl80211_ops,
15260         .n_ops = ARRAY_SIZE(nl80211_ops),
15261         .mcgrps = nl80211_mcgrps,
15262         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15263         .parallel_ops = true,
15264 };
15265
15266 /* notification functions */
15267
15268 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15269                           enum nl80211_commands cmd)
15270 {
15271         struct sk_buff *msg;
15272         struct nl80211_dump_wiphy_state state = {};
15273
15274         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15275                 cmd != NL80211_CMD_DEL_WIPHY);
15276
15277         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15278         if (!msg)
15279                 return;
15280
15281         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15282                 nlmsg_free(msg);
15283                 return;
15284         }
15285
15286         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15287                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15288 }
15289
15290 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15291                                 struct wireless_dev *wdev,
15292                                 enum nl80211_commands cmd)
15293 {
15294         struct sk_buff *msg;
15295
15296         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15297         if (!msg)
15298                 return;
15299
15300         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15301                 nlmsg_free(msg);
15302                 return;
15303         }
15304
15305         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15306                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15307 }
15308
15309 static int nl80211_add_scan_req(struct sk_buff *msg,
15310                                 struct cfg80211_registered_device *rdev)
15311 {
15312         struct cfg80211_scan_request *req = rdev->scan_req;
15313         struct nlattr *nest;
15314         int i;
15315
15316         if (WARN_ON(!req))
15317                 return 0;
15318
15319         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15320         if (!nest)
15321                 goto nla_put_failure;
15322         for (i = 0; i < req->n_ssids; i++) {
15323                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15324                         goto nla_put_failure;
15325         }
15326         nla_nest_end(msg, nest);
15327
15328         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15329                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15330                 if (!nest)
15331                         goto nla_put_failure;
15332                 for (i = 0; i < req->n_channels; i++) {
15333                         if (nla_put_u32(msg, i,
15334                                    ieee80211_channel_to_khz(req->channels[i])))
15335                                 goto nla_put_failure;
15336                 }
15337                 nla_nest_end(msg, nest);
15338         } else {
15339                 nest = nla_nest_start_noflag(msg,
15340                                              NL80211_ATTR_SCAN_FREQUENCIES);
15341                 if (!nest)
15342                         goto nla_put_failure;
15343                 for (i = 0; i < req->n_channels; i++) {
15344                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15345                                 goto nla_put_failure;
15346                 }
15347                 nla_nest_end(msg, nest);
15348         }
15349
15350         if (req->ie &&
15351             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15352                 goto nla_put_failure;
15353
15354         if (req->flags &&
15355             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15356                 goto nla_put_failure;
15357
15358         if (req->info.scan_start_tsf &&
15359             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15360                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
15361              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15362                      req->info.tsf_bssid)))
15363                 goto nla_put_failure;
15364
15365         return 0;
15366  nla_put_failure:
15367         return -ENOBUFS;
15368 }
15369
15370 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15371                                  struct cfg80211_registered_device *rdev,
15372                                  struct wireless_dev *wdev,
15373                                  u32 portid, u32 seq, int flags,
15374                                  u32 cmd)
15375 {
15376         void *hdr;
15377
15378         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15379         if (!hdr)
15380                 return -1;
15381
15382         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15383             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15384                                          wdev->netdev->ifindex)) ||
15385             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15386                               NL80211_ATTR_PAD))
15387                 goto nla_put_failure;
15388
15389         /* ignore errors and send incomplete event anyway */
15390         nl80211_add_scan_req(msg, rdev);
15391
15392         genlmsg_end(msg, hdr);
15393         return 0;
15394
15395  nla_put_failure:
15396         genlmsg_cancel(msg, hdr);
15397         return -EMSGSIZE;
15398 }
15399
15400 static int
15401 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15402                             struct cfg80211_sched_scan_request *req, u32 cmd)
15403 {
15404         void *hdr;
15405
15406         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15407         if (!hdr)
15408                 return -1;
15409
15410         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15411                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15412             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15413             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15414                               NL80211_ATTR_PAD))
15415                 goto nla_put_failure;
15416
15417         genlmsg_end(msg, hdr);
15418         return 0;
15419
15420  nla_put_failure:
15421         genlmsg_cancel(msg, hdr);
15422         return -EMSGSIZE;
15423 }
15424
15425 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15426                              struct wireless_dev *wdev)
15427 {
15428         struct sk_buff *msg;
15429
15430         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15431         if (!msg)
15432                 return;
15433
15434         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15435                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15436                 nlmsg_free(msg);
15437                 return;
15438         }
15439
15440         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15441                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15442 }
15443
15444 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15445                                        struct wireless_dev *wdev, bool aborted)
15446 {
15447         struct sk_buff *msg;
15448
15449         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15450         if (!msg)
15451                 return NULL;
15452
15453         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15454                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15455                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15456                 nlmsg_free(msg);
15457                 return NULL;
15458         }
15459
15460         return msg;
15461 }
15462
15463 /* send message created by nl80211_build_scan_msg() */
15464 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15465                            struct sk_buff *msg)
15466 {
15467         if (!msg)
15468                 return;
15469
15470         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15471                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15472 }
15473
15474 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15475 {
15476         struct sk_buff *msg;
15477
15478         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15479         if (!msg)
15480                 return;
15481
15482         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15483                 nlmsg_free(msg);
15484                 return;
15485         }
15486
15487         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15488                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15489 }
15490
15491 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15492                                           struct regulatory_request *request)
15493 {
15494         /* Userspace can always count this one always being set */
15495         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15496                 goto nla_put_failure;
15497
15498         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15499                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15500                                NL80211_REGDOM_TYPE_WORLD))
15501                         goto nla_put_failure;
15502         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15503                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15504                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15505                         goto nla_put_failure;
15506         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15507                    request->intersect) {
15508                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15509                                NL80211_REGDOM_TYPE_INTERSECTION))
15510                         goto nla_put_failure;
15511         } else {
15512                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15513                                NL80211_REGDOM_TYPE_COUNTRY) ||
15514                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15515                                    request->alpha2))
15516                         goto nla_put_failure;
15517         }
15518
15519         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15520                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15521
15522                 if (wiphy &&
15523                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15524                         goto nla_put_failure;
15525
15526                 if (wiphy &&
15527                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15528                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15529                         goto nla_put_failure;
15530         }
15531
15532         return true;
15533
15534 nla_put_failure:
15535         return false;
15536 }
15537
15538 /*
15539  * This can happen on global regulatory changes or device specific settings
15540  * based on custom regulatory domains.
15541  */
15542 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15543                                      struct regulatory_request *request)
15544 {
15545         struct sk_buff *msg;
15546         void *hdr;
15547
15548         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15549         if (!msg)
15550                 return;
15551
15552         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15553         if (!hdr)
15554                 goto nla_put_failure;
15555
15556         if (!nl80211_reg_change_event_fill(msg, request))
15557                 goto nla_put_failure;
15558
15559         genlmsg_end(msg, hdr);
15560
15561         rcu_read_lock();
15562         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15563                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15564         rcu_read_unlock();
15565
15566         return;
15567
15568 nla_put_failure:
15569         nlmsg_free(msg);
15570 }
15571
15572 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15573                                     struct net_device *netdev,
15574                                     const u8 *buf, size_t len,
15575                                     enum nl80211_commands cmd, gfp_t gfp,
15576                                     int uapsd_queues, const u8 *req_ies,
15577                                     size_t req_ies_len)
15578 {
15579         struct sk_buff *msg;
15580         void *hdr;
15581
15582         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15583         if (!msg)
15584                 return;
15585
15586         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15587         if (!hdr) {
15588                 nlmsg_free(msg);
15589                 return;
15590         }
15591
15592         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15593             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15594             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15595             (req_ies &&
15596              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15597                 goto nla_put_failure;
15598
15599         if (uapsd_queues >= 0) {
15600                 struct nlattr *nla_wmm =
15601                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15602                 if (!nla_wmm)
15603                         goto nla_put_failure;
15604
15605                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15606                                uapsd_queues))
15607                         goto nla_put_failure;
15608
15609                 nla_nest_end(msg, nla_wmm);
15610         }
15611
15612         genlmsg_end(msg, hdr);
15613
15614         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15615                                 NL80211_MCGRP_MLME, gfp);
15616         return;
15617
15618  nla_put_failure:
15619         nlmsg_free(msg);
15620 }
15621
15622 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15623                           struct net_device *netdev, const u8 *buf,
15624                           size_t len, gfp_t gfp)
15625 {
15626         nl80211_send_mlme_event(rdev, netdev, buf, len,
15627                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15628 }
15629
15630 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15631                            struct net_device *netdev, const u8 *buf,
15632                            size_t len, gfp_t gfp, int uapsd_queues,
15633                            const u8 *req_ies, size_t req_ies_len)
15634 {
15635         nl80211_send_mlme_event(rdev, netdev, buf, len,
15636                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15637                                 req_ies, req_ies_len);
15638 }
15639
15640 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15641                          struct net_device *netdev, const u8 *buf,
15642                          size_t len, gfp_t gfp)
15643 {
15644         nl80211_send_mlme_event(rdev, netdev, buf, len,
15645                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15646 }
15647
15648 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15649                            struct net_device *netdev, const u8 *buf,
15650                            size_t len, gfp_t gfp)
15651 {
15652         nl80211_send_mlme_event(rdev, netdev, buf, len,
15653                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15654 }
15655
15656 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15657                                   size_t len)
15658 {
15659         struct wireless_dev *wdev = dev->ieee80211_ptr;
15660         struct wiphy *wiphy = wdev->wiphy;
15661         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15662         const struct ieee80211_mgmt *mgmt = (void *)buf;
15663         u32 cmd;
15664
15665         if (WARN_ON(len < 2))
15666                 return;
15667
15668         if (ieee80211_is_deauth(mgmt->frame_control)) {
15669                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15670         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15671                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15672         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15673                 if (wdev->unprot_beacon_reported &&
15674                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15675                         return;
15676                 cmd = NL80211_CMD_UNPROT_BEACON;
15677                 wdev->unprot_beacon_reported = jiffies;
15678         } else {
15679                 return;
15680         }
15681
15682         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15683         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15684                                 NULL, 0);
15685 }
15686 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15687
15688 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15689                                       struct net_device *netdev, int cmd,
15690                                       const u8 *addr, gfp_t gfp)
15691 {
15692         struct sk_buff *msg;
15693         void *hdr;
15694
15695         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15696         if (!msg)
15697                 return;
15698
15699         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15700         if (!hdr) {
15701                 nlmsg_free(msg);
15702                 return;
15703         }
15704
15705         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15706             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15707             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15708             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15709                 goto nla_put_failure;
15710
15711         genlmsg_end(msg, hdr);
15712
15713         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15714                                 NL80211_MCGRP_MLME, gfp);
15715         return;
15716
15717  nla_put_failure:
15718         nlmsg_free(msg);
15719 }
15720
15721 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15722                                struct net_device *netdev, const u8 *addr,
15723                                gfp_t gfp)
15724 {
15725         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15726                                   addr, gfp);
15727 }
15728
15729 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15730                                 struct net_device *netdev, const u8 *addr,
15731                                 gfp_t gfp)
15732 {
15733         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15734                                   addr, gfp);
15735 }
15736
15737 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15738                                  struct net_device *netdev,
15739                                  struct cfg80211_connect_resp_params *cr,
15740                                  gfp_t gfp)
15741 {
15742         struct sk_buff *msg;
15743         void *hdr;
15744
15745         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15746                         cr->fils.kek_len + cr->fils.pmk_len +
15747                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15748         if (!msg)
15749                 return;
15750
15751         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15752         if (!hdr) {
15753                 nlmsg_free(msg);
15754                 return;
15755         }
15756
15757         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15758             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15759             (cr->bssid &&
15760              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15761             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15762                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15763                         cr->status) ||
15764             (cr->status < 0 &&
15765              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15766               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15767                           cr->timeout_reason))) ||
15768             (cr->req_ie &&
15769              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15770             (cr->resp_ie &&
15771              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15772                      cr->resp_ie)) ||
15773             (cr->fils.update_erp_next_seq_num &&
15774              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15775                          cr->fils.erp_next_seq_num)) ||
15776             (cr->status == WLAN_STATUS_SUCCESS &&
15777              ((cr->fils.kek &&
15778                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15779                        cr->fils.kek)) ||
15780               (cr->fils.pmk &&
15781                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15782               (cr->fils.pmkid &&
15783                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15784                 goto nla_put_failure;
15785
15786         genlmsg_end(msg, hdr);
15787
15788         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15789                                 NL80211_MCGRP_MLME, gfp);
15790         return;
15791
15792  nla_put_failure:
15793         nlmsg_free(msg);
15794 }
15795
15796 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15797                          struct net_device *netdev,
15798                          struct cfg80211_roam_info *info, gfp_t gfp)
15799 {
15800         struct sk_buff *msg;
15801         void *hdr;
15802         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15803
15804         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15805                         info->fils.kek_len + info->fils.pmk_len +
15806                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15807         if (!msg)
15808                 return;
15809
15810         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15811         if (!hdr) {
15812                 nlmsg_free(msg);
15813                 return;
15814         }
15815
15816         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15817             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15818             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15819             (info->req_ie &&
15820              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15821                      info->req_ie)) ||
15822             (info->resp_ie &&
15823              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15824                      info->resp_ie)) ||
15825             (info->fils.update_erp_next_seq_num &&
15826              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15827                          info->fils.erp_next_seq_num)) ||
15828             (info->fils.kek &&
15829              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15830                      info->fils.kek)) ||
15831             (info->fils.pmk &&
15832              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15833             (info->fils.pmkid &&
15834              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15835                 goto nla_put_failure;
15836
15837         genlmsg_end(msg, hdr);
15838
15839         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15840                                 NL80211_MCGRP_MLME, gfp);
15841         return;
15842
15843  nla_put_failure:
15844         nlmsg_free(msg);
15845 }
15846
15847 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15848                                   struct net_device *netdev, const u8 *bssid)
15849 {
15850         struct sk_buff *msg;
15851         void *hdr;
15852
15853         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15854         if (!msg)
15855                 return;
15856
15857         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15858         if (!hdr) {
15859                 nlmsg_free(msg);
15860                 return;
15861         }
15862
15863         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15864             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15865             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15866                 goto nla_put_failure;
15867
15868         genlmsg_end(msg, hdr);
15869
15870         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15871                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15872         return;
15873
15874  nla_put_failure:
15875         nlmsg_free(msg);
15876 }
15877
15878 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15879                                struct net_device *netdev, u16 reason,
15880                                const u8 *ie, size_t ie_len, bool from_ap)
15881 {
15882         struct sk_buff *msg;
15883         void *hdr;
15884
15885         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15886         if (!msg)
15887                 return;
15888
15889         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15890         if (!hdr) {
15891                 nlmsg_free(msg);
15892                 return;
15893         }
15894
15895         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15896             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15897             (reason &&
15898              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15899             (from_ap &&
15900              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15901             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15902                 goto nla_put_failure;
15903
15904         genlmsg_end(msg, hdr);
15905
15906         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15907                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15908         return;
15909
15910  nla_put_failure:
15911         nlmsg_free(msg);
15912 }
15913
15914 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15915                              struct net_device *netdev, const u8 *bssid,
15916                              gfp_t gfp)
15917 {
15918         struct sk_buff *msg;
15919         void *hdr;
15920
15921         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15922         if (!msg)
15923                 return;
15924
15925         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15926         if (!hdr) {
15927                 nlmsg_free(msg);
15928                 return;
15929         }
15930
15931         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15932             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15933             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15934                 goto nla_put_failure;
15935
15936         genlmsg_end(msg, hdr);
15937
15938         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15939                                 NL80211_MCGRP_MLME, gfp);
15940         return;
15941
15942  nla_put_failure:
15943         nlmsg_free(msg);
15944 }
15945
15946 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15947                                         const u8 *ie, u8 ie_len,
15948                                         int sig_dbm, gfp_t gfp)
15949 {
15950         struct wireless_dev *wdev = dev->ieee80211_ptr;
15951         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15952         struct sk_buff *msg;
15953         void *hdr;
15954
15955         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15956                 return;
15957
15958         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15959
15960         msg = nlmsg_new(100 + ie_len, gfp);
15961         if (!msg)
15962                 return;
15963
15964         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15965         if (!hdr) {
15966                 nlmsg_free(msg);
15967                 return;
15968         }
15969
15970         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15971             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15972             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15973             (ie_len && ie &&
15974              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15975             (sig_dbm &&
15976              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15977                 goto nla_put_failure;
15978
15979         genlmsg_end(msg, hdr);
15980
15981         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15982                                 NL80211_MCGRP_MLME, gfp);
15983         return;
15984
15985  nla_put_failure:
15986         nlmsg_free(msg);
15987 }
15988 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15989
15990 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15991                                  struct net_device *netdev, const u8 *addr,
15992                                  enum nl80211_key_type key_type, int key_id,
15993                                  const u8 *tsc, gfp_t gfp)
15994 {
15995         struct sk_buff *msg;
15996         void *hdr;
15997
15998         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15999         if (!msg)
16000                 return;
16001
16002         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16003         if (!hdr) {
16004                 nlmsg_free(msg);
16005                 return;
16006         }
16007
16008         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16009             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16010             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16011             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16012             (key_id != -1 &&
16013              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16014             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16015                 goto nla_put_failure;
16016
16017         genlmsg_end(msg, hdr);
16018
16019         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16020                                 NL80211_MCGRP_MLME, gfp);
16021         return;
16022
16023  nla_put_failure:
16024         nlmsg_free(msg);
16025 }
16026
16027 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16028                                     struct ieee80211_channel *channel_before,
16029                                     struct ieee80211_channel *channel_after)
16030 {
16031         struct sk_buff *msg;
16032         void *hdr;
16033         struct nlattr *nl_freq;
16034
16035         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16036         if (!msg)
16037                 return;
16038
16039         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16040         if (!hdr) {
16041                 nlmsg_free(msg);
16042                 return;
16043         }
16044
16045         /*
16046          * Since we are applying the beacon hint to a wiphy we know its
16047          * wiphy_idx is valid
16048          */
16049         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16050                 goto nla_put_failure;
16051
16052         /* Before */
16053         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16054         if (!nl_freq)
16055                 goto nla_put_failure;
16056
16057         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16058                 goto nla_put_failure;
16059         nla_nest_end(msg, nl_freq);
16060
16061         /* After */
16062         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16063         if (!nl_freq)
16064                 goto nla_put_failure;
16065
16066         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16067                 goto nla_put_failure;
16068         nla_nest_end(msg, nl_freq);
16069
16070         genlmsg_end(msg, hdr);
16071
16072         rcu_read_lock();
16073         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16074                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16075         rcu_read_unlock();
16076
16077         return;
16078
16079 nla_put_failure:
16080         nlmsg_free(msg);
16081 }
16082
16083 static void nl80211_send_remain_on_chan_event(
16084         int cmd, struct cfg80211_registered_device *rdev,
16085         struct wireless_dev *wdev, u64 cookie,
16086         struct ieee80211_channel *chan,
16087         unsigned int duration, gfp_t gfp)
16088 {
16089         struct sk_buff *msg;
16090         void *hdr;
16091
16092         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16093         if (!msg)
16094                 return;
16095
16096         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16097         if (!hdr) {
16098                 nlmsg_free(msg);
16099                 return;
16100         }
16101
16102         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16103             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16104                                          wdev->netdev->ifindex)) ||
16105             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16106                               NL80211_ATTR_PAD) ||
16107             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16108             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16109                         NL80211_CHAN_NO_HT) ||
16110             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16111                               NL80211_ATTR_PAD))
16112                 goto nla_put_failure;
16113
16114         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16115             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16116                 goto nla_put_failure;
16117
16118         genlmsg_end(msg, hdr);
16119
16120         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16121                                 NL80211_MCGRP_MLME, gfp);
16122         return;
16123
16124  nla_put_failure:
16125         nlmsg_free(msg);
16126 }
16127
16128 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16129                                struct ieee80211_channel *chan,
16130                                unsigned int duration, gfp_t gfp)
16131 {
16132         struct wiphy *wiphy = wdev->wiphy;
16133         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16134
16135         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16136         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16137                                           rdev, wdev, cookie, chan,
16138                                           duration, gfp);
16139 }
16140 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16141
16142 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16143                                         struct ieee80211_channel *chan,
16144                                         gfp_t gfp)
16145 {
16146         struct wiphy *wiphy = wdev->wiphy;
16147         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16148
16149         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16150         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16151                                           rdev, wdev, cookie, chan, 0, gfp);
16152 }
16153 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16154
16155 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16156                                         struct ieee80211_channel *chan,
16157                                         gfp_t gfp)
16158 {
16159         struct wiphy *wiphy = wdev->wiphy;
16160         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16161
16162         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16163         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16164                                           rdev, wdev, cookie, chan, 0, gfp);
16165 }
16166 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16167
16168 void cfg80211_new_sta(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
16175         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16176
16177         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16178         if (!msg)
16179                 return;
16180
16181         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16182                                  rdev, dev, mac_addr, sinfo) < 0) {
16183                 nlmsg_free(msg);
16184                 return;
16185         }
16186
16187         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16188                                 NL80211_MCGRP_MLME, gfp);
16189 }
16190 EXPORT_SYMBOL(cfg80211_new_sta);
16191
16192 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16193                             struct station_info *sinfo, gfp_t gfp)
16194 {
16195         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16196         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16197         struct sk_buff *msg;
16198         struct station_info empty_sinfo = {};
16199
16200         if (!sinfo)
16201                 sinfo = &empty_sinfo;
16202
16203         trace_cfg80211_del_sta(dev, mac_addr);
16204
16205         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16206         if (!msg) {
16207                 cfg80211_sinfo_release_content(sinfo);
16208                 return;
16209         }
16210
16211         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16212                                  rdev, dev, mac_addr, sinfo) < 0) {
16213                 nlmsg_free(msg);
16214                 return;
16215         }
16216
16217         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16218                                 NL80211_MCGRP_MLME, gfp);
16219 }
16220 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16221
16222 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16223                           enum nl80211_connect_failed_reason reason,
16224                           gfp_t gfp)
16225 {
16226         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16227         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16228         struct sk_buff *msg;
16229         void *hdr;
16230
16231         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16232         if (!msg)
16233                 return;
16234
16235         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16236         if (!hdr) {
16237                 nlmsg_free(msg);
16238                 return;
16239         }
16240
16241         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16242             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16243             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16244                 goto nla_put_failure;
16245
16246         genlmsg_end(msg, hdr);
16247
16248         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16249                                 NL80211_MCGRP_MLME, gfp);
16250         return;
16251
16252  nla_put_failure:
16253         nlmsg_free(msg);
16254 }
16255 EXPORT_SYMBOL(cfg80211_conn_failed);
16256
16257 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16258                                        const u8 *addr, gfp_t gfp)
16259 {
16260         struct wireless_dev *wdev = dev->ieee80211_ptr;
16261         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16262         struct sk_buff *msg;
16263         void *hdr;
16264         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16265
16266         if (!nlportid)
16267                 return false;
16268
16269         msg = nlmsg_new(100, gfp);
16270         if (!msg)
16271                 return true;
16272
16273         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16274         if (!hdr) {
16275                 nlmsg_free(msg);
16276                 return true;
16277         }
16278
16279         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16280             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16281             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16282                 goto nla_put_failure;
16283
16284         genlmsg_end(msg, hdr);
16285         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16286         return true;
16287
16288  nla_put_failure:
16289         nlmsg_free(msg);
16290         return true;
16291 }
16292
16293 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16294                                 const u8 *addr, gfp_t gfp)
16295 {
16296         struct wireless_dev *wdev = dev->ieee80211_ptr;
16297         bool ret;
16298
16299         trace_cfg80211_rx_spurious_frame(dev, addr);
16300
16301         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16302                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16303                 trace_cfg80211_return_bool(false);
16304                 return false;
16305         }
16306         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16307                                          addr, gfp);
16308         trace_cfg80211_return_bool(ret);
16309         return ret;
16310 }
16311 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16312
16313 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16314                                         const u8 *addr, gfp_t gfp)
16315 {
16316         struct wireless_dev *wdev = dev->ieee80211_ptr;
16317         bool ret;
16318
16319         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16320
16321         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16322                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16323                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16324                 trace_cfg80211_return_bool(false);
16325                 return false;
16326         }
16327         ret = __nl80211_unexpected_frame(dev,
16328                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16329                                          addr, gfp);
16330         trace_cfg80211_return_bool(ret);
16331         return ret;
16332 }
16333 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16334
16335 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16336                       struct wireless_dev *wdev, u32 nlportid,
16337                       int freq, int sig_dbm,
16338                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16339 {
16340         struct net_device *netdev = wdev->netdev;
16341         struct sk_buff *msg;
16342         void *hdr;
16343
16344         msg = nlmsg_new(100 + len, gfp);
16345         if (!msg)
16346                 return -ENOMEM;
16347
16348         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16349         if (!hdr) {
16350                 nlmsg_free(msg);
16351                 return -ENOMEM;
16352         }
16353
16354         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16355             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16356                                         netdev->ifindex)) ||
16357             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16358                               NL80211_ATTR_PAD) ||
16359             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16360             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16361             (sig_dbm &&
16362              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16363             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16364             (flags &&
16365              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16366                 goto nla_put_failure;
16367
16368         genlmsg_end(msg, hdr);
16369
16370         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16371
16372  nla_put_failure:
16373         nlmsg_free(msg);
16374         return -ENOBUFS;
16375 }
16376
16377 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16378                                     const u8 *buf, size_t len, bool ack,
16379                                     gfp_t gfp, enum nl80211_commands command)
16380 {
16381         struct wiphy *wiphy = wdev->wiphy;
16382         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16383         struct net_device *netdev = wdev->netdev;
16384         struct sk_buff *msg;
16385         void *hdr;
16386
16387         if (command == NL80211_CMD_FRAME_TX_STATUS)
16388                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16389         else
16390                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16391
16392         msg = nlmsg_new(100 + len, gfp);
16393         if (!msg)
16394                 return;
16395
16396         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16397         if (!hdr) {
16398                 nlmsg_free(msg);
16399                 return;
16400         }
16401
16402         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16403             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16404                                    netdev->ifindex)) ||
16405             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16406                               NL80211_ATTR_PAD) ||
16407             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16408             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16409                               NL80211_ATTR_PAD) ||
16410             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16411                 goto nla_put_failure;
16412
16413         genlmsg_end(msg, hdr);
16414
16415         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16416                                 NL80211_MCGRP_MLME, gfp);
16417         return;
16418
16419 nla_put_failure:
16420         nlmsg_free(msg);
16421 }
16422
16423 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16424                                      const u8 *buf, size_t len, bool ack,
16425                                      gfp_t gfp)
16426 {
16427         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16428                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16429 }
16430 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16431
16432 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16433                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16434 {
16435         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16436                                 NL80211_CMD_FRAME_TX_STATUS);
16437 }
16438 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16439
16440 static int __nl80211_rx_control_port(struct net_device *dev,
16441                                      struct sk_buff *skb,
16442                                      bool unencrypted, gfp_t gfp)
16443 {
16444         struct wireless_dev *wdev = dev->ieee80211_ptr;
16445         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16446         struct ethhdr *ehdr = eth_hdr(skb);
16447         const u8 *addr = ehdr->h_source;
16448         u16 proto = be16_to_cpu(skb->protocol);
16449         struct sk_buff *msg;
16450         void *hdr;
16451         struct nlattr *frame;
16452
16453         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16454
16455         if (!nlportid)
16456                 return -ENOENT;
16457
16458         msg = nlmsg_new(100 + skb->len, gfp);
16459         if (!msg)
16460                 return -ENOMEM;
16461
16462         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16463         if (!hdr) {
16464                 nlmsg_free(msg);
16465                 return -ENOBUFS;
16466         }
16467
16468         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16469             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16470             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16471                               NL80211_ATTR_PAD) ||
16472             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16473             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16474             (unencrypted && nla_put_flag(msg,
16475                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16476                 goto nla_put_failure;
16477
16478         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16479         if (!frame)
16480                 goto nla_put_failure;
16481
16482         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16483         genlmsg_end(msg, hdr);
16484
16485         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16486
16487  nla_put_failure:
16488         nlmsg_free(msg);
16489         return -ENOBUFS;
16490 }
16491
16492 bool cfg80211_rx_control_port(struct net_device *dev,
16493                               struct sk_buff *skb, bool unencrypted)
16494 {
16495         int ret;
16496
16497         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16498         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16499         trace_cfg80211_return_bool(ret == 0);
16500         return ret == 0;
16501 }
16502 EXPORT_SYMBOL(cfg80211_rx_control_port);
16503
16504 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16505                                             const char *mac, gfp_t gfp)
16506 {
16507         struct wireless_dev *wdev = dev->ieee80211_ptr;
16508         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16509         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16510         void **cb;
16511
16512         if (!msg)
16513                 return NULL;
16514
16515         cb = (void **)msg->cb;
16516
16517         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16518         if (!cb[0]) {
16519                 nlmsg_free(msg);
16520                 return NULL;
16521         }
16522
16523         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16524             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16525                 goto nla_put_failure;
16526
16527         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16528                 goto nla_put_failure;
16529
16530         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16531         if (!cb[1])
16532                 goto nla_put_failure;
16533
16534         cb[2] = rdev;
16535
16536         return msg;
16537  nla_put_failure:
16538         nlmsg_free(msg);
16539         return NULL;
16540 }
16541
16542 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16543 {
16544         void **cb = (void **)msg->cb;
16545         struct cfg80211_registered_device *rdev = cb[2];
16546
16547         nla_nest_end(msg, cb[1]);
16548         genlmsg_end(msg, cb[0]);
16549
16550         memset(msg->cb, 0, sizeof(msg->cb));
16551
16552         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16553                                 NL80211_MCGRP_MLME, gfp);
16554 }
16555
16556 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16557                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16558                               s32 rssi_level, gfp_t gfp)
16559 {
16560         struct sk_buff *msg;
16561         struct wireless_dev *wdev = dev->ieee80211_ptr;
16562         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16563
16564         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16565
16566         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16567                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16568                 return;
16569
16570         if (wdev->cqm_config) {
16571                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16572
16573                 cfg80211_cqm_rssi_update(rdev, dev);
16574
16575                 if (rssi_level == 0)
16576                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16577         }
16578
16579         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16580         if (!msg)
16581                 return;
16582
16583         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16584                         rssi_event))
16585                 goto nla_put_failure;
16586
16587         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16588                                       rssi_level))
16589                 goto nla_put_failure;
16590
16591         cfg80211_send_cqm(msg, gfp);
16592
16593         return;
16594
16595  nla_put_failure:
16596         nlmsg_free(msg);
16597 }
16598 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16599
16600 void cfg80211_cqm_txe_notify(struct net_device *dev,
16601                              const u8 *peer, u32 num_packets,
16602                              u32 rate, u32 intvl, gfp_t gfp)
16603 {
16604         struct sk_buff *msg;
16605
16606         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16607         if (!msg)
16608                 return;
16609
16610         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16611                 goto nla_put_failure;
16612
16613         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16614                 goto nla_put_failure;
16615
16616         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16617                 goto nla_put_failure;
16618
16619         cfg80211_send_cqm(msg, gfp);
16620         return;
16621
16622  nla_put_failure:
16623         nlmsg_free(msg);
16624 }
16625 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16626
16627 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16628                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16629 {
16630         struct sk_buff *msg;
16631
16632         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16633
16634         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16635         if (!msg)
16636                 return;
16637
16638         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16639                 goto nla_put_failure;
16640
16641         cfg80211_send_cqm(msg, gfp);
16642         return;
16643
16644  nla_put_failure:
16645         nlmsg_free(msg);
16646 }
16647 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16648
16649 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16650 {
16651         struct sk_buff *msg;
16652
16653         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16654         if (!msg)
16655                 return;
16656
16657         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16658                 goto nla_put_failure;
16659
16660         cfg80211_send_cqm(msg, gfp);
16661         return;
16662
16663  nla_put_failure:
16664         nlmsg_free(msg);
16665 }
16666 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16667
16668 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16669                                      struct net_device *netdev, const u8 *bssid,
16670                                      const u8 *replay_ctr, gfp_t gfp)
16671 {
16672         struct sk_buff *msg;
16673         struct nlattr *rekey_attr;
16674         void *hdr;
16675
16676         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16677         if (!msg)
16678                 return;
16679
16680         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16681         if (!hdr) {
16682                 nlmsg_free(msg);
16683                 return;
16684         }
16685
16686         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16687             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16688             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16689                 goto nla_put_failure;
16690
16691         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16692         if (!rekey_attr)
16693                 goto nla_put_failure;
16694
16695         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16696                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16697                 goto nla_put_failure;
16698
16699         nla_nest_end(msg, rekey_attr);
16700
16701         genlmsg_end(msg, hdr);
16702
16703         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16704                                 NL80211_MCGRP_MLME, gfp);
16705         return;
16706
16707  nla_put_failure:
16708         nlmsg_free(msg);
16709 }
16710
16711 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16712                                const u8 *replay_ctr, gfp_t gfp)
16713 {
16714         struct wireless_dev *wdev = dev->ieee80211_ptr;
16715         struct wiphy *wiphy = wdev->wiphy;
16716         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16717
16718         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16719         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16720 }
16721 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16722
16723 static void
16724 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16725                                struct net_device *netdev, int index,
16726                                const u8 *bssid, bool preauth, gfp_t gfp)
16727 {
16728         struct sk_buff *msg;
16729         struct nlattr *attr;
16730         void *hdr;
16731
16732         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16733         if (!msg)
16734                 return;
16735
16736         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16737         if (!hdr) {
16738                 nlmsg_free(msg);
16739                 return;
16740         }
16741
16742         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16743             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16744                 goto nla_put_failure;
16745
16746         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16747         if (!attr)
16748                 goto nla_put_failure;
16749
16750         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16751             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16752             (preauth &&
16753              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16754                 goto nla_put_failure;
16755
16756         nla_nest_end(msg, attr);
16757
16758         genlmsg_end(msg, hdr);
16759
16760         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16761                                 NL80211_MCGRP_MLME, gfp);
16762         return;
16763
16764  nla_put_failure:
16765         nlmsg_free(msg);
16766 }
16767
16768 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16769                                      const u8 *bssid, bool preauth, gfp_t gfp)
16770 {
16771         struct wireless_dev *wdev = dev->ieee80211_ptr;
16772         struct wiphy *wiphy = wdev->wiphy;
16773         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16774
16775         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16776         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16777 }
16778 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16779
16780 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16781                                      struct net_device *netdev,
16782                                      struct cfg80211_chan_def *chandef,
16783                                      gfp_t gfp,
16784                                      enum nl80211_commands notif,
16785                                      u8 count)
16786 {
16787         struct sk_buff *msg;
16788         void *hdr;
16789
16790         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16791         if (!msg)
16792                 return;
16793
16794         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16795         if (!hdr) {
16796                 nlmsg_free(msg);
16797                 return;
16798         }
16799
16800         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16801                 goto nla_put_failure;
16802
16803         if (nl80211_send_chandef(msg, chandef))
16804                 goto nla_put_failure;
16805
16806         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16807             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16808                         goto nla_put_failure;
16809
16810         genlmsg_end(msg, hdr);
16811
16812         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16813                                 NL80211_MCGRP_MLME, gfp);
16814         return;
16815
16816  nla_put_failure:
16817         nlmsg_free(msg);
16818 }
16819
16820 void cfg80211_ch_switch_notify(struct net_device *dev,
16821                                struct cfg80211_chan_def *chandef)
16822 {
16823         struct wireless_dev *wdev = dev->ieee80211_ptr;
16824         struct wiphy *wiphy = wdev->wiphy;
16825         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16826
16827         ASSERT_WDEV_LOCK(wdev);
16828
16829         trace_cfg80211_ch_switch_notify(dev, chandef);
16830
16831         wdev->chandef = *chandef;
16832         wdev->preset_chandef = *chandef;
16833
16834         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16835             !WARN_ON(!wdev->current_bss))
16836                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16837
16838         cfg80211_sched_dfs_chan_update(rdev);
16839
16840         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16841                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16842 }
16843 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16844
16845 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16846                                        struct cfg80211_chan_def *chandef,
16847                                        u8 count)
16848 {
16849         struct wireless_dev *wdev = dev->ieee80211_ptr;
16850         struct wiphy *wiphy = wdev->wiphy;
16851         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16852
16853         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16854
16855         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16856                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16857 }
16858 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16859
16860 void
16861 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16862                      const struct cfg80211_chan_def *chandef,
16863                      enum nl80211_radar_event event,
16864                      struct net_device *netdev, gfp_t gfp)
16865 {
16866         struct sk_buff *msg;
16867         void *hdr;
16868
16869         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16870         if (!msg)
16871                 return;
16872
16873         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16874         if (!hdr) {
16875                 nlmsg_free(msg);
16876                 return;
16877         }
16878
16879         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16880                 goto nla_put_failure;
16881
16882         /* NOP and radar events don't need a netdev parameter */
16883         if (netdev) {
16884                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16885
16886                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16887                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16888                                       NL80211_ATTR_PAD))
16889                         goto nla_put_failure;
16890         }
16891
16892         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16893                 goto nla_put_failure;
16894
16895         if (nl80211_send_chandef(msg, chandef))
16896                 goto nla_put_failure;
16897
16898         genlmsg_end(msg, hdr);
16899
16900         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16901                                 NL80211_MCGRP_MLME, gfp);
16902         return;
16903
16904  nla_put_failure:
16905         nlmsg_free(msg);
16906 }
16907
16908 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16909                                        struct sta_opmode_info *sta_opmode,
16910                                        gfp_t gfp)
16911 {
16912         struct sk_buff *msg;
16913         struct wireless_dev *wdev = dev->ieee80211_ptr;
16914         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16915         void *hdr;
16916
16917         if (WARN_ON(!mac))
16918                 return;
16919
16920         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16921         if (!msg)
16922                 return;
16923
16924         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16925         if (!hdr) {
16926                 nlmsg_free(msg);
16927                 return;
16928         }
16929
16930         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16931                 goto nla_put_failure;
16932
16933         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16934                 goto nla_put_failure;
16935
16936         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16937                 goto nla_put_failure;
16938
16939         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16940             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16941                 goto nla_put_failure;
16942
16943         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16944             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16945                 goto nla_put_failure;
16946
16947         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16948             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16949                 goto nla_put_failure;
16950
16951         genlmsg_end(msg, hdr);
16952
16953         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16954                                 NL80211_MCGRP_MLME, gfp);
16955
16956         return;
16957
16958 nla_put_failure:
16959         nlmsg_free(msg);
16960 }
16961 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16962
16963 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16964                            u64 cookie, bool acked, s32 ack_signal,
16965                            bool is_valid_ack_signal, gfp_t gfp)
16966 {
16967         struct wireless_dev *wdev = dev->ieee80211_ptr;
16968         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16969         struct sk_buff *msg;
16970         void *hdr;
16971
16972         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16973
16974         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16975
16976         if (!msg)
16977                 return;
16978
16979         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16980         if (!hdr) {
16981                 nlmsg_free(msg);
16982                 return;
16983         }
16984
16985         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16986             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16987             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16988             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16989                               NL80211_ATTR_PAD) ||
16990             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16991             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16992                                                 ack_signal)))
16993                 goto nla_put_failure;
16994
16995         genlmsg_end(msg, hdr);
16996
16997         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16998                                 NL80211_MCGRP_MLME, gfp);
16999         return;
17000
17001  nla_put_failure:
17002         nlmsg_free(msg);
17003 }
17004 EXPORT_SYMBOL(cfg80211_probe_status);
17005
17006 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17007                                      size_t len, int freq, int sig_dbm)
17008 {
17009         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17010         struct sk_buff *msg;
17011         void *hdr;
17012         struct cfg80211_beacon_registration *reg;
17013
17014         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17015
17016         spin_lock_bh(&rdev->beacon_registrations_lock);
17017         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17018                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17019                 if (!msg) {
17020                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17021                         return;
17022                 }
17023
17024                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17025                 if (!hdr)
17026                         goto nla_put_failure;
17027
17028                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17029                     (freq &&
17030                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17031                                   KHZ_TO_MHZ(freq)) ||
17032                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17033                                   freq % 1000))) ||
17034                     (sig_dbm &&
17035                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17036                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17037                         goto nla_put_failure;
17038
17039                 genlmsg_end(msg, hdr);
17040
17041                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17042         }
17043         spin_unlock_bh(&rdev->beacon_registrations_lock);
17044         return;
17045
17046  nla_put_failure:
17047         spin_unlock_bh(&rdev->beacon_registrations_lock);
17048         nlmsg_free(msg);
17049 }
17050 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17051
17052 #ifdef CONFIG_PM
17053 static int cfg80211_net_detect_results(struct sk_buff *msg,
17054                                        struct cfg80211_wowlan_wakeup *wakeup)
17055 {
17056         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17057         struct nlattr *nl_results, *nl_match, *nl_freqs;
17058         int i, j;
17059
17060         nl_results = nla_nest_start_noflag(msg,
17061                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17062         if (!nl_results)
17063                 return -EMSGSIZE;
17064
17065         for (i = 0; i < nd->n_matches; i++) {
17066                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17067
17068                 nl_match = nla_nest_start_noflag(msg, i);
17069                 if (!nl_match)
17070                         break;
17071
17072                 /* The SSID attribute is optional in nl80211, but for
17073                  * simplicity reasons it's always present in the
17074                  * cfg80211 structure.  If a driver can't pass the
17075                  * SSID, that needs to be changed.  A zero length SSID
17076                  * is still a valid SSID (wildcard), so it cannot be
17077                  * used for this purpose.
17078                  */
17079                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17080                             match->ssid.ssid)) {
17081                         nla_nest_cancel(msg, nl_match);
17082                         goto out;
17083                 }
17084
17085                 if (match->n_channels) {
17086                         nl_freqs = nla_nest_start_noflag(msg,
17087                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17088                         if (!nl_freqs) {
17089                                 nla_nest_cancel(msg, nl_match);
17090                                 goto out;
17091                         }
17092
17093                         for (j = 0; j < match->n_channels; j++) {
17094                                 if (nla_put_u32(msg, j, match->channels[j])) {
17095                                         nla_nest_cancel(msg, nl_freqs);
17096                                         nla_nest_cancel(msg, nl_match);
17097                                         goto out;
17098                                 }
17099                         }
17100
17101                         nla_nest_end(msg, nl_freqs);
17102                 }
17103
17104                 nla_nest_end(msg, nl_match);
17105         }
17106
17107 out:
17108         nla_nest_end(msg, nl_results);
17109         return 0;
17110 }
17111
17112 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17113                                    struct cfg80211_wowlan_wakeup *wakeup,
17114                                    gfp_t gfp)
17115 {
17116         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17117         struct sk_buff *msg;
17118         void *hdr;
17119         int size = 200;
17120
17121         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17122
17123         if (wakeup)
17124                 size += wakeup->packet_present_len;
17125
17126         msg = nlmsg_new(size, gfp);
17127         if (!msg)
17128                 return;
17129
17130         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17131         if (!hdr)
17132                 goto free_msg;
17133
17134         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17135             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17136                               NL80211_ATTR_PAD))
17137                 goto free_msg;
17138
17139         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17140                                         wdev->netdev->ifindex))
17141                 goto free_msg;
17142
17143         if (wakeup) {
17144                 struct nlattr *reasons;
17145
17146                 reasons = nla_nest_start_noflag(msg,
17147                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17148                 if (!reasons)
17149                         goto free_msg;
17150
17151                 if (wakeup->disconnect &&
17152                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17153                         goto free_msg;
17154                 if (wakeup->magic_pkt &&
17155                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17156                         goto free_msg;
17157                 if (wakeup->gtk_rekey_failure &&
17158                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17159                         goto free_msg;
17160                 if (wakeup->eap_identity_req &&
17161                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17162                         goto free_msg;
17163                 if (wakeup->four_way_handshake &&
17164                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17165                         goto free_msg;
17166                 if (wakeup->rfkill_release &&
17167                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17168                         goto free_msg;
17169
17170                 if (wakeup->pattern_idx >= 0 &&
17171                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17172                                 wakeup->pattern_idx))
17173                         goto free_msg;
17174
17175                 if (wakeup->tcp_match &&
17176                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17177                         goto free_msg;
17178
17179                 if (wakeup->tcp_connlost &&
17180                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17181                         goto free_msg;
17182
17183                 if (wakeup->tcp_nomoretokens &&
17184                     nla_put_flag(msg,
17185                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17186                         goto free_msg;
17187
17188                 if (wakeup->packet) {
17189                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17190                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17191
17192                         if (!wakeup->packet_80211) {
17193                                 pkt_attr =
17194                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17195                                 len_attr =
17196                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17197                         }
17198
17199                         if (wakeup->packet_len &&
17200                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17201                                 goto free_msg;
17202
17203                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17204                                     wakeup->packet))
17205                                 goto free_msg;
17206                 }
17207
17208                 if (wakeup->net_detect &&
17209                     cfg80211_net_detect_results(msg, wakeup))
17210                                 goto free_msg;
17211
17212                 nla_nest_end(msg, reasons);
17213         }
17214
17215         genlmsg_end(msg, hdr);
17216
17217         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17218                                 NL80211_MCGRP_MLME, gfp);
17219         return;
17220
17221  free_msg:
17222         nlmsg_free(msg);
17223 }
17224 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17225 #endif
17226
17227 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17228                                 enum nl80211_tdls_operation oper,
17229                                 u16 reason_code, gfp_t gfp)
17230 {
17231         struct wireless_dev *wdev = dev->ieee80211_ptr;
17232         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17233         struct sk_buff *msg;
17234         void *hdr;
17235
17236         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17237                                          reason_code);
17238
17239         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17240         if (!msg)
17241                 return;
17242
17243         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17244         if (!hdr) {
17245                 nlmsg_free(msg);
17246                 return;
17247         }
17248
17249         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17250             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17251             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17252             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17253             (reason_code > 0 &&
17254              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17255                 goto nla_put_failure;
17256
17257         genlmsg_end(msg, hdr);
17258
17259         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17260                                 NL80211_MCGRP_MLME, gfp);
17261         return;
17262
17263  nla_put_failure:
17264         nlmsg_free(msg);
17265 }
17266 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17267
17268 static int nl80211_netlink_notify(struct notifier_block * nb,
17269                                   unsigned long state,
17270                                   void *_notify)
17271 {
17272         struct netlink_notify *notify = _notify;
17273         struct cfg80211_registered_device *rdev;
17274         struct wireless_dev *wdev;
17275         struct cfg80211_beacon_registration *reg, *tmp;
17276
17277         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17278                 return NOTIFY_DONE;
17279
17280         rcu_read_lock();
17281
17282         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17283                 struct cfg80211_sched_scan_request *sched_scan_req;
17284
17285                 list_for_each_entry_rcu(sched_scan_req,
17286                                         &rdev->sched_scan_req_list,
17287                                         list) {
17288                         if (sched_scan_req->owner_nlportid == notify->portid) {
17289                                 sched_scan_req->nl_owner_dead = true;
17290                                 schedule_work(&rdev->sched_scan_stop_wk);
17291                         }
17292                 }
17293
17294                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17295                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17296
17297                         if (wdev->owner_nlportid == notify->portid) {
17298                                 wdev->nl_owner_dead = true;
17299                                 schedule_work(&rdev->destroy_work);
17300                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17301                                 schedule_work(&wdev->disconnect_wk);
17302                         }
17303
17304                         cfg80211_release_pmsr(wdev, notify->portid);
17305                 }
17306
17307                 spin_lock_bh(&rdev->beacon_registrations_lock);
17308                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17309                                          list) {
17310                         if (reg->nlportid == notify->portid) {
17311                                 list_del(&reg->list);
17312                                 kfree(reg);
17313                                 break;
17314                         }
17315                 }
17316                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17317         }
17318
17319         rcu_read_unlock();
17320
17321         /*
17322          * It is possible that the user space process that is controlling the
17323          * indoor setting disappeared, so notify the regulatory core.
17324          */
17325         regulatory_netlink_notify(notify->portid);
17326         return NOTIFY_OK;
17327 }
17328
17329 static struct notifier_block nl80211_netlink_notifier = {
17330         .notifier_call = nl80211_netlink_notify,
17331 };
17332
17333 void cfg80211_ft_event(struct net_device *netdev,
17334                        struct cfg80211_ft_event_params *ft_event)
17335 {
17336         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17337         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17338         struct sk_buff *msg;
17339         void *hdr;
17340
17341         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17342
17343         if (!ft_event->target_ap)
17344                 return;
17345
17346         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17347                         GFP_KERNEL);
17348         if (!msg)
17349                 return;
17350
17351         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17352         if (!hdr)
17353                 goto out;
17354
17355         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17356             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17357             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17358                 goto out;
17359
17360         if (ft_event->ies &&
17361             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17362                 goto out;
17363         if (ft_event->ric_ies &&
17364             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17365                     ft_event->ric_ies))
17366                 goto out;
17367
17368         genlmsg_end(msg, hdr);
17369
17370         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17371                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17372         return;
17373  out:
17374         nlmsg_free(msg);
17375 }
17376 EXPORT_SYMBOL(cfg80211_ft_event);
17377
17378 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17379 {
17380         struct cfg80211_registered_device *rdev;
17381         struct sk_buff *msg;
17382         void *hdr;
17383         u32 nlportid;
17384
17385         rdev = wiphy_to_rdev(wdev->wiphy);
17386         if (!rdev->crit_proto_nlportid)
17387                 return;
17388
17389         nlportid = rdev->crit_proto_nlportid;
17390         rdev->crit_proto_nlportid = 0;
17391
17392         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17393         if (!msg)
17394                 return;
17395
17396         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17397         if (!hdr)
17398                 goto nla_put_failure;
17399
17400         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17401             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17402                               NL80211_ATTR_PAD))
17403                 goto nla_put_failure;
17404
17405         genlmsg_end(msg, hdr);
17406
17407         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17408         return;
17409
17410  nla_put_failure:
17411         nlmsg_free(msg);
17412 }
17413 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17414
17415 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17416 {
17417         struct wiphy *wiphy = wdev->wiphy;
17418         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17419         struct sk_buff *msg;
17420         void *hdr;
17421
17422         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17423         if (!msg)
17424                 return;
17425
17426         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17427         if (!hdr)
17428                 goto out;
17429
17430         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17431             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17432             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17433                               NL80211_ATTR_PAD))
17434                 goto out;
17435
17436         genlmsg_end(msg, hdr);
17437
17438         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17439                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17440         return;
17441  out:
17442         nlmsg_free(msg);
17443 }
17444
17445 int cfg80211_external_auth_request(struct net_device *dev,
17446                                    struct cfg80211_external_auth_params *params,
17447                                    gfp_t gfp)
17448 {
17449         struct wireless_dev *wdev = dev->ieee80211_ptr;
17450         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17451         struct sk_buff *msg;
17452         void *hdr;
17453
17454         if (!wdev->conn_owner_nlportid)
17455                 return -EINVAL;
17456
17457         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17458         if (!msg)
17459                 return -ENOMEM;
17460
17461         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17462         if (!hdr)
17463                 goto nla_put_failure;
17464
17465         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17466             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17467             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17468             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17469                         params->action) ||
17470             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17471             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17472                     params->ssid.ssid))
17473                 goto nla_put_failure;
17474
17475         genlmsg_end(msg, hdr);
17476         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17477                         wdev->conn_owner_nlportid);
17478         return 0;
17479
17480  nla_put_failure:
17481         nlmsg_free(msg);
17482         return -ENOBUFS;
17483 }
17484 EXPORT_SYMBOL(cfg80211_external_auth_request);
17485
17486 void cfg80211_update_owe_info_event(struct net_device *netdev,
17487                                     struct cfg80211_update_owe_info *owe_info,
17488                                     gfp_t gfp)
17489 {
17490         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17491         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17492         struct sk_buff *msg;
17493         void *hdr;
17494
17495         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17496
17497         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17498         if (!msg)
17499                 return;
17500
17501         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17502         if (!hdr)
17503                 goto nla_put_failure;
17504
17505         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17506             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17507             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17508                 goto nla_put_failure;
17509
17510         if (!owe_info->ie_len ||
17511             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17512                 goto nla_put_failure;
17513
17514         genlmsg_end(msg, hdr);
17515
17516         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17517                                 NL80211_MCGRP_MLME, gfp);
17518         return;
17519
17520 nla_put_failure:
17521         genlmsg_cancel(msg, hdr);
17522         nlmsg_free(msg);
17523 }
17524 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17525
17526 /* initialisation/exit functions */
17527
17528 int __init nl80211_init(void)
17529 {
17530         int err;
17531
17532         err = genl_register_family(&nl80211_fam);
17533         if (err)
17534                 return err;
17535
17536         err = netlink_register_notifier(&nl80211_netlink_notifier);
17537         if (err)
17538                 goto err_out;
17539
17540         return 0;
17541  err_out:
17542         genl_unregister_family(&nl80211_fam);
17543         return err;
17544 }
17545
17546 void nl80211_exit(void)
17547 {
17548         netlink_unregister_notifier(&nl80211_netlink_notifier);
17549         genl_unregister_family(&nl80211_fam);
17550 }