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) 2018-2019 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 <net/net_namespace.h>
  24 #include <net/genetlink.h>
  25 #include <net/cfg80211.h>
  26 #include <net/sock.h>
  27 #include <net/inet_connection_sock.h>
  28 #include "core.h"
  29 #include "nl80211.h"
  30 #include "reg.h"
  31 #include "rdev-ops.h"
  32
  33 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  34                                    struct genl_info *info,
  35                                    struct cfg80211_crypto_settings *settings,
  36                                    int cipher_limit);
  37
  38 /* the netlink family */
  39 static struct genl_family nl80211_fam;
  40
  41 /* multicast groups */
  42 enum nl80211_multicast_groups {
  43         NL80211_MCGRP_CONFIG,
  44         NL80211_MCGRP_SCAN,
  45         NL80211_MCGRP_REGULATORY,
  46         NL80211_MCGRP_MLME,
  47         NL80211_MCGRP_VENDOR,
  48         NL80211_MCGRP_NAN,
  49         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  50 };
  51
  52 static const struct genl_multicast_group nl80211_mcgrps[] = {
  53         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  54         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  55         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  56         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  57         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  58         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  59 #ifdef CONFIG_NL80211_TESTMODE
  60         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  61 #endif
  62 };
  63
  64 /* returns ERR_PTR values */
  65 static struct wireless_dev *
  66 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  67 {
  68         struct cfg80211_registered_device *rdev;
  69         struct wireless_dev *result = NULL;
  70         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  71         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  72         u64 wdev_id;
  73         int wiphy_idx = -1;
  74         int ifidx = -1;
  75
  76         ASSERT_RTNL();
  77
  78         if (!have_ifidx && !have_wdev_id)
  79                 return ERR_PTR(-EINVAL);
  80
  81         if (have_ifidx)
  82                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  83         if (have_wdev_id) {
  84                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  85                 wiphy_idx = wdev_id >> 32;
  86         }
  87
  88         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  89                 struct wireless_dev *wdev;
  90
  91                 if (wiphy_net(&rdev->wiphy) != netns)
  92                         continue;
  93
  94                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  95                         continue;
  96
  97                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  98                         if (have_ifidx && wdev->netdev &&
  99                             wdev->netdev->ifindex == ifidx) {
 100                                 result = wdev;
 101                                 break;
 102                         }
 103                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 104                                 result = wdev;
 105                                 break;
 106                         }
 107                 }
 108
 109                 if (result)
 110                         break;
 111         }
 112
 113         if (result)
 114                 return result;
 115         return ERR_PTR(-ENODEV);
 116 }
 117
 118 static struct cfg80211_registered_device *
 119 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 120 {
 121         struct cfg80211_registered_device *rdev = NULL, *tmp;
 122         struct net_device *netdev;
 123
 124         ASSERT_RTNL();
 125
 126         if (!attrs[NL80211_ATTR_WIPHY] &&
 127             !attrs[NL80211_ATTR_IFINDEX] &&
 128             !attrs[NL80211_ATTR_WDEV])
 129                 return ERR_PTR(-EINVAL);
 130
 131         if (attrs[NL80211_ATTR_WIPHY])
 132                 rdev = cfg80211_rdev_by_wiphy_idx(
 133                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 134
 135         if (attrs[NL80211_ATTR_WDEV]) {
 136                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 137                 struct wireless_dev *wdev;
 138                 bool found = false;
 139
 140                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 141                 if (tmp) {
 142                         /* make sure wdev exists */
 143                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 144                                 if (wdev->identifier != (u32)wdev_id)
 145                                         continue;
 146                                 found = true;
 147                                 break;
 148                         }
 149
 150                         if (!found)
 151                                 tmp = NULL;
 152
 153                         if (rdev && tmp != rdev)
 154                                 return ERR_PTR(-EINVAL);
 155                         rdev = tmp;
 156                 }
 157         }
 158
 159         if (attrs[NL80211_ATTR_IFINDEX]) {
 160                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 161
 162                 netdev = __dev_get_by_index(netns, ifindex);
 163                 if (netdev) {
 164                         if (netdev->ieee80211_ptr)
 165                                 tmp = wiphy_to_rdev(
 166                                         netdev->ieee80211_ptr->wiphy);
 167                         else
 168                                 tmp = NULL;
 169
 170                         /* not wireless device -- return error */
 171                         if (!tmp)
 172                                 return ERR_PTR(-EINVAL);
 173
 174                         /* mismatch -- return error */
 175                         if (rdev && tmp != rdev)
 176                                 return ERR_PTR(-EINVAL);
 177
 178                         rdev = tmp;
 179                 }
 180         }
 181
 182         if (!rdev)
 183                 return ERR_PTR(-ENODEV);
 184
 185         if (netns != wiphy_net(&rdev->wiphy))
 186                 return ERR_PTR(-ENODEV);
 187
 188         return rdev;
 189 }
 190
 191 /*
 192  * This function returns a pointer to the driver
 193  * that the genl_info item that is passed refers to.
 194  *
 195  * The result of this can be a PTR_ERR and hence must
 196  * be checked with IS_ERR() for errors.
 197  */
 198 static struct cfg80211_registered_device *
 199 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 200 {
 201         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 202 }
 203
 204 static int validate_beacon_head(const struct nlattr *attr,
 205                                 struct netlink_ext_ack *extack)
 206 {
 207         const u8 *data = nla_data(attr);
 208         unsigned int len = nla_len(attr);
 209         const struct element *elem;
 210         const struct ieee80211_mgmt *mgmt = (void *)data;
 211         unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
 212                                          u.beacon.variable);
 213
 214         if (len < fixedlen)
 215                 goto err;
 216
 217         if (ieee80211_hdrlen(mgmt->frame_control) !=
 218             offsetof(struct ieee80211_mgmt, u.beacon))
 219                 goto err;
 220
 221         data += fixedlen;
 222         len -= fixedlen;
 223
 224         for_each_element(elem, data, len) {
 225                 /* nothing */
 226         }
 227
 228         if (for_each_element_completed(elem, data, len))
 229                 return 0;
 230
 231 err:
 232         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 233         return -EINVAL;
 234 }
 235
 236 static int validate_ie_attr(const struct nlattr *attr,
 237                             struct netlink_ext_ack *extack)
 238 {
 239         const u8 *data = nla_data(attr);
 240         unsigned int len = nla_len(attr);
 241         const struct element *elem;
 242
 243         for_each_element(elem, data, len) {
 244                 /* nothing */
 245         }
 246
 247         if (for_each_element_completed(elem, data, len))
 248                 return 0;
 249
 250         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 251         return -EINVAL;
 252 }
 253
 254 /* policy for the attributes */
 255 static const struct nla_policy
 256 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 257         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 258         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 259                                         .len = U8_MAX },
 260         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 261                                              .len = U8_MAX },
 262 };
 263
 264 static const struct nla_policy
 265 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 266         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 267         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 268         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 269                 NLA_POLICY_MAX(NLA_U8, 15),
 270         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 271         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 272                 NLA_POLICY_MAX(NLA_U8, 15),
 273         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 274                 NLA_POLICY_MAX(NLA_U8, 31),
 275         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 276         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 277         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 278 };
 279
 280 static const struct nla_policy
 281 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 282         [NL80211_PMSR_TYPE_FTM] =
 283                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 284 };
 285
 286 static const struct nla_policy
 287 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 288         [NL80211_PMSR_REQ_ATTR_DATA] =
 289                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 290         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 291 };
 292
 293 static const struct nla_policy
 294 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 295         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 296         /*
 297          * we could specify this again to be the top-level policy,
 298          * but that would open us up to recursion problems ...
 299          */
 300         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 301         [NL80211_PMSR_PEER_ATTR_REQ] =
 302                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 303         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 304 };
 305
 306 static const struct nla_policy
 307 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 308         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 309         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 310         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 311         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 312         [NL80211_PMSR_ATTR_PEERS] =
 313                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 314 };
 315
 316 static const struct nla_policy
 317 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 318         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 319                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 320         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 321                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 322 };
 323
 324 static const struct nla_policy
 325 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 326         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 327         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 328         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 329 };
 330
 331 static const struct nla_policy
 332 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 333         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 334         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 335         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 336         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 337         [NL80211_TID_CONFIG_ATTR_NOACK] =
 338                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 339         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 340         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 341         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 342                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 343         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 344                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 345 };
 346
 347 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 348         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 349         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 350         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 351                                       .len = 20-1 },
 352         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 353
 354         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 355         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 356         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 357                                                 NL80211_EDMG_CHANNELS_MIN,
 358                                                 NL80211_EDMG_CHANNELS_MAX),
 359         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 360                                                 NL80211_EDMG_BW_CONFIG_MIN,
 361                                                 NL80211_EDMG_BW_CONFIG_MAX),
 362
 363         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 364         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 365         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 366
 367         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 368         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 369         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 370         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 371         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 372         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 373
 374         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 375         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 376         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 377
 378         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 379         [NL80211_ATTR_PREV_BSSID] = {
 380                 .type = NLA_EXACT_LEN_WARN,
 381                 .len = ETH_ALEN
 382         },
 383
 384         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 385         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 386                                     .len = WLAN_MAX_KEY_LEN },
 387         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 388         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 389         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 390         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 391         [NL80211_ATTR_KEY_TYPE] =
 392                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 393
 394         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 395         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 396         [NL80211_ATTR_BEACON_HEAD] =
 397                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 398                                        IEEE80211_MAX_DATA_LEN),
 399         [NL80211_ATTR_BEACON_TAIL] =
 400                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 401                                        IEEE80211_MAX_DATA_LEN),
 402         [NL80211_ATTR_STA_AID] =
 403                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 404         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 405         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 406         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 407                                                .len = NL80211_MAX_SUPP_RATES },
 408         [NL80211_ATTR_STA_PLINK_ACTION] =
 409                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 410         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 411                 NLA_POLICY_RANGE(NLA_U8,
 412                                  NL80211_TX_POWER_AUTOMATIC,
 413                                  NL80211_TX_POWER_FIXED),
 414         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 415         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 416         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 417         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 418                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 419         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 420
 421         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 422         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 423
 424         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 425         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 426         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 427         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 428                                            .len = NL80211_MAX_SUPP_RATES },
 429         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 430
 431         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 432         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 433
 434         [NL80211_ATTR_HT_CAPABILITY] = {
 435                 .type = NLA_EXACT_LEN_WARN,
 436                 .len = NL80211_HT_CAPABILITY_LEN
 437         },
 438
 439         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 440         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 441                                                    validate_ie_attr,
 442                                                    IEEE80211_MAX_DATA_LEN),
 443         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 444         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 445
 446         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 447                                 .len = IEEE80211_MAX_SSID_LEN },
 448         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 449         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 450         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 451         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 452         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 453                                                   NL80211_MFP_NO,
 454                                                   NL80211_MFP_OPTIONAL),
 455         [NL80211_ATTR_STA_FLAGS2] = {
 456                 .len = sizeof(struct nl80211_sta_flag_update),
 457         },
 458         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 459         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 460         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 461         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 462         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 463         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 464         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 465         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 466         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 467         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 468         [NL80211_ATTR_PMKID] = {
 469                 .type = NLA_EXACT_LEN_WARN,
 470                 .len = WLAN_PMKID_LEN
 471         },
 472         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 473         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 474         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 475         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 476                                  .len = IEEE80211_MAX_DATA_LEN },
 477         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 478         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 479                                                    NL80211_PS_DISABLED,
 480                                                    NL80211_PS_ENABLED),
 481         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 482         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 483         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 484         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 485         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 486         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 487         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 488         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 489         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 490         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 491         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 492         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 493         [NL80211_ATTR_STA_PLINK_STATE] =
 494                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 495         [NL80211_ATTR_MESH_PEER_AID] =
 496                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 497         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 498         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 499         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 500         [NL80211_ATTR_HIDDEN_SSID] =
 501                 NLA_POLICY_RANGE(NLA_U32,
 502                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 503                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 504         [NL80211_ATTR_IE_PROBE_RESP] =
 505                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 506                                        IEEE80211_MAX_DATA_LEN),
 507         [NL80211_ATTR_IE_ASSOC_RESP] =
 508                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 509                                        IEEE80211_MAX_DATA_LEN),
 510         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 511         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 512         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 513         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 514         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 515         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 516         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 517         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 518         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 519         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 520         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 521                                       .len = IEEE80211_MAX_DATA_LEN },
 522         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 523         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 524         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 525                 .len = NL80211_HT_CAPABILITY_LEN
 526         },
 527         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 528         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 529         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 530         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 531         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 532         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 533         [NL80211_ATTR_VHT_CAPABILITY] = {
 534                 .type = NLA_EXACT_LEN_WARN,
 535                 .len = NL80211_VHT_CAPABILITY_LEN
 536         },
 537         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 538         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 539         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 540         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 541                 NLA_POLICY_RANGE(NLA_U32,
 542                                  NL80211_MESH_POWER_UNKNOWN + 1,
 543                                  NL80211_MESH_POWER_MAX),
 544         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 545         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 546         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 547         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 548         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 549         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 550         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 551                 .len = NL80211_VHT_CAPABILITY_LEN,
 552         },
 553         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 554         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 555                                   .len = IEEE80211_MAX_DATA_LEN },
 556         [NL80211_ATTR_PEER_AID] =
 557                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 558         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 559         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 560         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 561         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 562         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 563         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 564         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 565         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 566         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 567         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 568         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 569         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 570         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 571                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 572         [NL80211_ATTR_MAC_HINT] = {
 573                 .type = NLA_EXACT_LEN_WARN,
 574                 .len = ETH_ALEN
 575         },
 576         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 577         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 578         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 579         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 580         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 581         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 582         [NL80211_ATTR_USER_PRIO] =
 583                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 584         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 585         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 586         [NL80211_ATTR_MAC_MASK] = {
 587                 .type = NLA_EXACT_LEN_WARN,
 588                 .len = ETH_ALEN
 589         },
 590         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 591         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 592         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 593         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 594         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 595         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 596         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 597                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 598         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 599                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 600         },
 601         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 602                 .type = NLA_EXACT_LEN_WARN,
 603                 .len = ETH_ALEN
 604         },
 605         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 606         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 607         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 608         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 609                                     .len = FILS_MAX_KEK_LEN },
 610         [NL80211_ATTR_FILS_NONCES] = {
 611                 .type = NLA_EXACT_LEN_WARN,
 612                 .len = 2 * FILS_NONCE_LEN
 613         },
 614         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 615         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 616         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 617         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 618                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 619         },
 620         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 621         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 622                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 623         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 624                                           .len = FILS_ERP_MAX_REALM_LEN },
 625         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 626         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 627                                         .len = FILS_ERP_MAX_RRK_LEN },
 628         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 629         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 630         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 631         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 632
 633         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 634         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 635         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 636         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 637                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 638
 639         [NL80211_ATTR_FTM_RESPONDER] = {
 640                 .type = NLA_NESTED,
 641                 .validation_data = nl80211_ftm_responder_policy,
 642         },
 643         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 644         [NL80211_ATTR_PEER_MEASUREMENTS] =
 645                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 646         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 647         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 648                                         .len = SAE_PASSWORD_MAX_LEN },
 649         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 650         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 651         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 652         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 653         [NL80211_ATTR_TID_CONFIG] =
 654                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 655 };
 656
 657 /* policy for the key attributes */
 658 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 659         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 660         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 661         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 662         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 663         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 664         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 665         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 666         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 667         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 668 };
 669
 670 /* policy for the key default flags */
 671 static const struct nla_policy
 672 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 673         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 674         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 675 };
 676
 677 #ifdef CONFIG_PM
 678 /* policy for WoWLAN attributes */
 679 static const struct nla_policy
 680 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 681         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 682         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 683         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 684         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 685         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 686         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 687         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 688         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 689         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 690         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 691 };
 692
 693 static const struct nla_policy
 694 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 695         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 696         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 697         [NL80211_WOWLAN_TCP_DST_MAC] = {
 698                 .type = NLA_EXACT_LEN_WARN,
 699                 .len = ETH_ALEN
 700         },
 701         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 702         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 703         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 704         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 705                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 706         },
 707         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 708                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 709         },
 710         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 711         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 712         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 713 };
 714 #endif /* CONFIG_PM */
 715
 716 /* policy for coalesce rule attributes */
 717 static const struct nla_policy
 718 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 719         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 720         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 721                 NLA_POLICY_RANGE(NLA_U32,
 722                                  NL80211_COALESCE_CONDITION_MATCH,
 723                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 724         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 725 };
 726
 727 /* policy for GTK rekey offload attributes */
 728 static const struct nla_policy
 729 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 730         [NL80211_REKEY_DATA_KEK] = {
 731                 .type = NLA_EXACT_LEN_WARN,
 732                 .len = NL80211_KEK_LEN,
 733         },
 734         [NL80211_REKEY_DATA_KCK] = {
 735                 .type = NLA_EXACT_LEN_WARN,
 736                 .len = NL80211_KCK_LEN,
 737         },
 738         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 739                 .type = NLA_EXACT_LEN_WARN,
 740                 .len = NL80211_REPLAY_CTR_LEN
 741         },
 742 };
 743
 744 static const struct nla_policy
 745 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 746         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 747         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 748         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 749         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 750 };
 751
 752 static const struct nla_policy
 753 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 754         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 755                                                  .len = IEEE80211_MAX_SSID_LEN },
 756         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 757                 .type = NLA_EXACT_LEN_WARN,
 758                 .len = ETH_ALEN
 759         },
 760         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 761         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 762                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 763 };
 764
 765 static const struct nla_policy
 766 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 767         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 768         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 769 };
 770
 771 static const struct nla_policy
 772 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 773         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 774         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 775         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 776                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 777         },
 778 };
 779
 780 /* policy for NAN function attributes */
 781 static const struct nla_policy
 782 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 783         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 784         [NL80211_NAN_FUNC_SERVICE_ID] = {
 785                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 786         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 787         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 788         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 789         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 790         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 791         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 792                 .type = NLA_EXACT_LEN_WARN,
 793                 .len = ETH_ALEN
 794         },
 795         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 796         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 797         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 798                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 799         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 800         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 801         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 802         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 803         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 804 };
 805
 806 /* policy for Service Response Filter attributes */
 807 static const struct nla_policy
 808 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 809         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 810         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 811                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 812         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 813         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 814 };
 815
 816 /* policy for packet pattern attributes */
 817 static const struct nla_policy
 818 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 819         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 820         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 821         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 822 };
 823
 824 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 825                               struct cfg80211_registered_device **rdev,
 826                               struct wireless_dev **wdev)
 827 {
 828         int err;
 829
 830         if (!cb->args[0]) {
 831                 struct nlattr **attrbuf;
 832
 833                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 834                                   GFP_KERNEL);
 835                 if (!attrbuf)
 836                         return -ENOMEM;
 837
 838                 err = nlmsg_parse_deprecated(cb->nlh,
 839                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 840                                              attrbuf, nl80211_fam.maxattr,
 841                                              nl80211_policy, NULL);
 842                 if (err) {
 843                         kfree(attrbuf);
 844                         return err;
 845                 }
 846
 847                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 848                                                    attrbuf);
 849                 kfree(attrbuf);
 850                 if (IS_ERR(*wdev))
 851                         return PTR_ERR(*wdev);
 852                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 853                 /* 0 is the first index - add 1 to parse only once */
 854                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 855                 cb->args[1] = (*wdev)->identifier;
 856         } else {
 857                 /* subtract the 1 again here */
 858                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 859                 struct wireless_dev *tmp;
 860
 861                 if (!wiphy)
 862                         return -ENODEV;
 863                 *rdev = wiphy_to_rdev(wiphy);
 864                 *wdev = NULL;
 865
 866                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 867                         if (tmp->identifier == cb->args[1]) {
 868                                 *wdev = tmp;
 869                                 break;
 870                         }
 871                 }
 872
 873                 if (!*wdev)
 874                         return -ENODEV;
 875         }
 876
 877         return 0;
 878 }
 879
 880 /* message building helper */
 881 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 882                      int flags, u8 cmd)
 883 {
 884         /* since there is no private header just add the generic one */
 885         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 886 }
 887
 888 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 889                                      const struct ieee80211_reg_rule *rule)
 890 {
 891         int j;
 892         struct nlattr *nl_wmm_rules =
 893                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 894
 895         if (!nl_wmm_rules)
 896                 goto nla_put_failure;
 897
 898         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 899                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 900
 901                 if (!nl_wmm_rule)
 902                         goto nla_put_failure;
 903
 904                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 905                                 rule->wmm_rule.client[j].cw_min) ||
 906                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 907                                 rule->wmm_rule.client[j].cw_max) ||
 908                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 909                                rule->wmm_rule.client[j].aifsn) ||
 910                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 911                                 rule->wmm_rule.client[j].cot))
 912                         goto nla_put_failure;
 913
 914                 nla_nest_end(msg, nl_wmm_rule);
 915         }
 916         nla_nest_end(msg, nl_wmm_rules);
 917
 918         return 0;
 919
 920 nla_put_failure:
 921         return -ENOBUFS;
 922 }
 923
 924 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 925                                    struct ieee80211_channel *chan,
 926                                    bool large)
 927 {
 928         /* Some channels must be completely excluded from the
 929          * list to protect old user-space tools from breaking
 930          */
 931         if (!large && chan->flags &
 932             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 933                 return 0;
 934
 935         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 936                         chan->center_freq))
 937                 goto nla_put_failure;
 938
 939         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 940             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 941                 goto nla_put_failure;
 942         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 943                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 944                         goto nla_put_failure;
 945                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 946                         goto nla_put_failure;
 947         }
 948         if (chan->flags & IEEE80211_CHAN_RADAR) {
 949                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 950                         goto nla_put_failure;
 951                 if (large) {
 952                         u32 time;
 953
 954                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 955
 956                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 957                                         chan->dfs_state))
 958                                 goto nla_put_failure;
 959                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 960                                         time))
 961                                 goto nla_put_failure;
 962                         if (nla_put_u32(msg,
 963                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 964                                         chan->dfs_cac_ms))
 965                                 goto nla_put_failure;
 966                 }
 967         }
 968
 969         if (large) {
 970                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 971                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 972                         goto nla_put_failure;
 973                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 974                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 975                         goto nla_put_failure;
 976                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 977                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 978                         goto nla_put_failure;
 979                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 980                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 981                         goto nla_put_failure;
 982                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 983                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 984                         goto nla_put_failure;
 985                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 986                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 987                         goto nla_put_failure;
 988                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 989                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 990                         goto nla_put_failure;
 991                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 992                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 993                         goto nla_put_failure;
 994                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
 995                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
 996                         goto nla_put_failure;
 997         }
 998
 999         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1000                         DBM_TO_MBM(chan->max_power)))
1001                 goto nla_put_failure;
1002
1003         if (large) {
1004                 const struct ieee80211_reg_rule *rule =
1005                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1006
1007                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1008                         if (nl80211_msg_put_wmm_rules(msg, rule))
1009                                 goto nla_put_failure;
1010                 }
1011         }
1012
1013         return 0;
1014
1015  nla_put_failure:
1016         return -ENOBUFS;
1017 }
1018
1019 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1020                                   struct cfg80211_txq_stats *txqstats,
1021                                   int attrtype)
1022 {
1023         struct nlattr *txqattr;
1024
1025 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1026         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1027             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1028                 return false;                                             \
1029         } while (0)
1030
1031         txqattr = nla_nest_start_noflag(msg, attrtype);
1032         if (!txqattr)
1033                 return false;
1034
1035         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1036         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1037         PUT_TXQVAL_U32(FLOWS, flows);
1038         PUT_TXQVAL_U32(DROPS, drops);
1039         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1040         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1041         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1042         PUT_TXQVAL_U32(COLLISIONS, collisions);
1043         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1044         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1045         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1046         nla_nest_end(msg, txqattr);
1047
1048 #undef PUT_TXQVAL_U32
1049         return true;
1050 }
1051
1052 /* netlink command implementations */
1053
1054 struct key_parse {
1055         struct key_params p;
1056         int idx;
1057         int type;
1058         bool def, defmgmt, defbeacon;
1059         bool def_uni, def_multi;
1060 };
1061
1062 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1063                                  struct key_parse *k)
1064 {
1065         struct nlattr *tb[NL80211_KEY_MAX + 1];
1066         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1067                                               nl80211_key_policy,
1068                                               info->extack);
1069         if (err)
1070                 return err;
1071
1072         k->def = !!tb[NL80211_KEY_DEFAULT];
1073         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1074         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1075
1076         if (k->def) {
1077                 k->def_uni = true;
1078                 k->def_multi = true;
1079         }
1080         if (k->defmgmt || k->defbeacon)
1081                 k->def_multi = true;
1082
1083         if (tb[NL80211_KEY_IDX])
1084                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1085
1086         if (tb[NL80211_KEY_DATA]) {
1087                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1088                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1089         }
1090
1091         if (tb[NL80211_KEY_SEQ]) {
1092                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1093                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1094         }
1095
1096         if (tb[NL80211_KEY_CIPHER])
1097                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1098
1099         if (tb[NL80211_KEY_TYPE])
1100                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1101
1102         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1103                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1104
1105                 err = nla_parse_nested_deprecated(kdt,
1106                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1107                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1108                                                   nl80211_key_default_policy,
1109                                                   info->extack);
1110                 if (err)
1111                         return err;
1112
1113                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1114                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1115         }
1116
1117         if (tb[NL80211_KEY_MODE])
1118                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1119
1120         return 0;
1121 }
1122
1123 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1124 {
1125         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1126                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1127                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1128         }
1129
1130         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1131                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1132                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1133         }
1134
1135         if (info->attrs[NL80211_ATTR_KEY_IDX])
1136                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1137
1138         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1139                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1140
1141         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1142         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1143
1144         if (k->def) {
1145                 k->def_uni = true;
1146                 k->def_multi = true;
1147         }
1148         if (k->defmgmt)
1149                 k->def_multi = true;
1150
1151         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1152                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1153
1154         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1155                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1156                 int err = nla_parse_nested_deprecated(kdt,
1157                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1158                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1159                                                       nl80211_key_default_policy,
1160                                                       info->extack);
1161                 if (err)
1162                         return err;
1163
1164                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1165                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1166         }
1167
1168         return 0;
1169 }
1170
1171 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1172 {
1173         int err;
1174
1175         memset(k, 0, sizeof(*k));
1176         k->idx = -1;
1177         k->type = -1;
1178
1179         if (info->attrs[NL80211_ATTR_KEY])
1180                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1181         else
1182                 err = nl80211_parse_key_old(info, k);
1183
1184         if (err)
1185                 return err;
1186
1187         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1188             (k->defbeacon ? 1 : 0) > 1) {
1189                 GENL_SET_ERR_MSG(info,
1190                                  "key with multiple default flags is invalid");
1191                 return -EINVAL;
1192         }
1193
1194         if (k->defmgmt || k->defbeacon) {
1195                 if (k->def_uni || !k->def_multi) {
1196                         GENL_SET_ERR_MSG(info,
1197                                          "defmgmt/defbeacon key must be mcast");
1198                         return -EINVAL;
1199                 }
1200         }
1201
1202         if (k->idx != -1) {
1203                 if (k->defmgmt) {
1204                         if (k->idx < 4 || k->idx > 5) {
1205                                 GENL_SET_ERR_MSG(info,
1206                                                  "defmgmt key idx not 4 or 5");
1207                                 return -EINVAL;
1208                         }
1209                 } else if (k->defbeacon) {
1210                         if (k->idx < 6 || k->idx > 7) {
1211                                 GENL_SET_ERR_MSG(info,
1212                                                  "defbeacon key idx not 6 or 7");
1213                                 return -EINVAL;
1214                         }
1215                 } else if (k->def) {
1216                         if (k->idx < 0 || k->idx > 3) {
1217                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1218                                 return -EINVAL;
1219                         }
1220                 } else {
1221                         if (k->idx < 0 || k->idx > 7) {
1222                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1223                                 return -EINVAL;
1224                         }
1225                 }
1226         }
1227
1228         return 0;
1229 }
1230
1231 static struct cfg80211_cached_keys *
1232 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1233                        struct genl_info *info, bool *no_ht)
1234 {
1235         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1236         struct key_parse parse;
1237         struct nlattr *key;
1238         struct cfg80211_cached_keys *result;
1239         int rem, err, def = 0;
1240         bool have_key = false;
1241
1242         nla_for_each_nested(key, keys, rem) {
1243                 have_key = true;
1244                 break;
1245         }
1246
1247         if (!have_key)
1248                 return NULL;
1249
1250         result = kzalloc(sizeof(*result), GFP_KERNEL);
1251         if (!result)
1252                 return ERR_PTR(-ENOMEM);
1253
1254         result->def = -1;
1255
1256         nla_for_each_nested(key, keys, rem) {
1257                 memset(&parse, 0, sizeof(parse));
1258                 parse.idx = -1;
1259
1260                 err = nl80211_parse_key_new(info, key, &parse);
1261                 if (err)
1262                         goto error;
1263                 err = -EINVAL;
1264                 if (!parse.p.key)
1265                         goto error;
1266                 if (parse.idx < 0 || parse.idx > 3) {
1267                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1268                         goto error;
1269                 }
1270                 if (parse.def) {
1271                         if (def) {
1272                                 GENL_SET_ERR_MSG(info,
1273                                                  "only one key can be default");
1274                                 goto error;
1275                         }
1276                         def = 1;
1277                         result->def = parse.idx;
1278                         if (!parse.def_uni || !parse.def_multi)
1279                                 goto error;
1280                 } else if (parse.defmgmt)
1281                         goto error;
1282                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1283                                                      parse.idx, false, NULL);
1284                 if (err)
1285                         goto error;
1286                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1287                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1288                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1289                         err = -EINVAL;
1290                         goto error;
1291                 }
1292                 result->params[parse.idx].cipher = parse.p.cipher;
1293                 result->params[parse.idx].key_len = parse.p.key_len;
1294                 result->params[parse.idx].key = result->data[parse.idx];
1295                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1296
1297                 /* must be WEP key if we got here */
1298                 if (no_ht)
1299                         *no_ht = true;
1300         }
1301
1302         if (result->def < 0) {
1303                 err = -EINVAL;
1304                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1305                 goto error;
1306         }
1307
1308         return result;
1309  error:
1310         kfree(result);
1311         return ERR_PTR(err);
1312 }
1313
1314 static int nl80211_key_allowed(struct wireless_dev *wdev)
1315 {
1316         ASSERT_WDEV_LOCK(wdev);
1317
1318         switch (wdev->iftype) {
1319         case NL80211_IFTYPE_AP:
1320         case NL80211_IFTYPE_AP_VLAN:
1321         case NL80211_IFTYPE_P2P_GO:
1322         case NL80211_IFTYPE_MESH_POINT:
1323                 break;
1324         case NL80211_IFTYPE_ADHOC:
1325         case NL80211_IFTYPE_STATION:
1326         case NL80211_IFTYPE_P2P_CLIENT:
1327                 if (!wdev->current_bss)
1328                         return -ENOLINK;
1329                 break;
1330         case NL80211_IFTYPE_UNSPECIFIED:
1331         case NL80211_IFTYPE_OCB:
1332         case NL80211_IFTYPE_MONITOR:
1333         case NL80211_IFTYPE_NAN:
1334         case NL80211_IFTYPE_P2P_DEVICE:
1335         case NL80211_IFTYPE_WDS:
1336         case NUM_NL80211_IFTYPES:
1337                 return -EINVAL;
1338         }
1339
1340         return 0;
1341 }
1342
1343 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1344                                                         struct nlattr *tb)
1345 {
1346         struct ieee80211_channel *chan;
1347
1348         if (tb == NULL)
1349                 return NULL;
1350         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1351         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1352                 return NULL;
1353         return chan;
1354 }
1355
1356 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1357 {
1358         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1359         int i;
1360
1361         if (!nl_modes)
1362                 goto nla_put_failure;
1363
1364         i = 0;
1365         while (ifmodes) {
1366                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1367                         goto nla_put_failure;
1368                 ifmodes >>= 1;
1369                 i++;
1370         }
1371
1372         nla_nest_end(msg, nl_modes);
1373         return 0;
1374
1375 nla_put_failure:
1376         return -ENOBUFS;
1377 }
1378
1379 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1380                                           struct sk_buff *msg,
1381                                           bool large)
1382 {
1383         struct nlattr *nl_combis;
1384         int i, j;
1385
1386         nl_combis = nla_nest_start_noflag(msg,
1387                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1388         if (!nl_combis)
1389                 goto nla_put_failure;
1390
1391         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1392                 const struct ieee80211_iface_combination *c;
1393                 struct nlattr *nl_combi, *nl_limits;
1394
1395                 c = &wiphy->iface_combinations[i];
1396
1397                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1398                 if (!nl_combi)
1399                         goto nla_put_failure;
1400
1401                 nl_limits = nla_nest_start_noflag(msg,
1402                                                   NL80211_IFACE_COMB_LIMITS);
1403                 if (!nl_limits)
1404                         goto nla_put_failure;
1405
1406                 for (j = 0; j < c->n_limits; j++) {
1407                         struct nlattr *nl_limit;
1408
1409                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1410                         if (!nl_limit)
1411                                 goto nla_put_failure;
1412                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1413                                         c->limits[j].max))
1414                                 goto nla_put_failure;
1415                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1416                                                 c->limits[j].types))
1417                                 goto nla_put_failure;
1418                         nla_nest_end(msg, nl_limit);
1419                 }
1420
1421                 nla_nest_end(msg, nl_limits);
1422
1423                 if (c->beacon_int_infra_match &&
1424                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1425                         goto nla_put_failure;
1426                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1427                                 c->num_different_channels) ||
1428                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1429                                 c->max_interfaces))
1430                         goto nla_put_failure;
1431                 if (large &&
1432                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1433                                 c->radar_detect_widths) ||
1434                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1435                                 c->radar_detect_regions)))
1436                         goto nla_put_failure;
1437                 if (c->beacon_int_min_gcd &&
1438                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1439                                 c->beacon_int_min_gcd))
1440                         goto nla_put_failure;
1441
1442                 nla_nest_end(msg, nl_combi);
1443         }
1444
1445         nla_nest_end(msg, nl_combis);
1446
1447         return 0;
1448 nla_put_failure:
1449         return -ENOBUFS;
1450 }
1451
1452 #ifdef CONFIG_PM
1453 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1454                                         struct sk_buff *msg)
1455 {
1456         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1457         struct nlattr *nl_tcp;
1458
1459         if (!tcp)
1460                 return 0;
1461
1462         nl_tcp = nla_nest_start_noflag(msg,
1463                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1464         if (!nl_tcp)
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 (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1472                         tcp->data_payload_max))
1473                 return -ENOBUFS;
1474
1475         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1476                 return -ENOBUFS;
1477
1478         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1479                                 sizeof(*tcp->tok), tcp->tok))
1480                 return -ENOBUFS;
1481
1482         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1483                         tcp->data_interval_max))
1484                 return -ENOBUFS;
1485
1486         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1487                         tcp->wake_payload_max))
1488                 return -ENOBUFS;
1489
1490         nla_nest_end(msg, nl_tcp);
1491         return 0;
1492 }
1493
1494 static int nl80211_send_wowlan(struct sk_buff *msg,
1495                                struct cfg80211_registered_device *rdev,
1496                                bool large)
1497 {
1498         struct nlattr *nl_wowlan;
1499
1500         if (!rdev->wiphy.wowlan)
1501                 return 0;
1502
1503         nl_wowlan = nla_nest_start_noflag(msg,
1504                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1505         if (!nl_wowlan)
1506                 return -ENOBUFS;
1507
1508         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1509              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1510             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1511              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1512             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1513              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1514             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1515              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1516             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1517              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1518             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1519              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1520             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1521              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1522             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1523              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1524                 return -ENOBUFS;
1525
1526         if (rdev->wiphy.wowlan->n_patterns) {
1527                 struct nl80211_pattern_support pat = {
1528                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1529                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1530                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1531                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1532                 };
1533
1534                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1535                             sizeof(pat), &pat))
1536                         return -ENOBUFS;
1537         }
1538
1539         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1540             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1541                         rdev->wiphy.wowlan->max_nd_match_sets))
1542                 return -ENOBUFS;
1543
1544         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1545                 return -ENOBUFS;
1546
1547         nla_nest_end(msg, nl_wowlan);
1548
1549         return 0;
1550 }
1551 #endif
1552
1553 static int nl80211_send_coalesce(struct sk_buff *msg,
1554                                  struct cfg80211_registered_device *rdev)
1555 {
1556         struct nl80211_coalesce_rule_support rule;
1557
1558         if (!rdev->wiphy.coalesce)
1559                 return 0;
1560
1561         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1562         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1563         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1564         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1565         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1566         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1567
1568         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1569                 return -ENOBUFS;
1570
1571         return 0;
1572 }
1573
1574 static int
1575 nl80211_send_iftype_data(struct sk_buff *msg,
1576                          const struct ieee80211_sband_iftype_data *iftdata)
1577 {
1578         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1579
1580         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1581                                 iftdata->types_mask))
1582                 return -ENOBUFS;
1583
1584         if (he_cap->has_he) {
1585                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1586                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1587                             he_cap->he_cap_elem.mac_cap_info) ||
1588                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1589                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1590                             he_cap->he_cap_elem.phy_cap_info) ||
1591                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1592                             sizeof(he_cap->he_mcs_nss_supp),
1593                             &he_cap->he_mcs_nss_supp) ||
1594                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1595                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1596                         return -ENOBUFS;
1597         }
1598
1599         return 0;
1600 }
1601
1602 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1603                                       struct ieee80211_supported_band *sband)
1604 {
1605         struct nlattr *nl_rates, *nl_rate;
1606         struct ieee80211_rate *rate;
1607         int i;
1608
1609         /* add HT info */
1610         if (sband->ht_cap.ht_supported &&
1611             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1612                      sizeof(sband->ht_cap.mcs),
1613                      &sband->ht_cap.mcs) ||
1614              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1615                          sband->ht_cap.cap) ||
1616              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1617                         sband->ht_cap.ampdu_factor) ||
1618              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1619                         sband->ht_cap.ampdu_density)))
1620                 return -ENOBUFS;
1621
1622         /* add VHT info */
1623         if (sband->vht_cap.vht_supported &&
1624             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1625                      sizeof(sband->vht_cap.vht_mcs),
1626                      &sband->vht_cap.vht_mcs) ||
1627              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1628                          sband->vht_cap.cap)))
1629                 return -ENOBUFS;
1630
1631         if (sband->n_iftype_data) {
1632                 struct nlattr *nl_iftype_data =
1633                         nla_nest_start_noflag(msg,
1634                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1635                 int err;
1636
1637                 if (!nl_iftype_data)
1638                         return -ENOBUFS;
1639
1640                 for (i = 0; i < sband->n_iftype_data; i++) {
1641                         struct nlattr *iftdata;
1642
1643                         iftdata = nla_nest_start_noflag(msg, i + 1);
1644                         if (!iftdata)
1645                                 return -ENOBUFS;
1646
1647                         err = nl80211_send_iftype_data(msg,
1648                                                        &sband->iftype_data[i]);
1649                         if (err)
1650                                 return err;
1651
1652                         nla_nest_end(msg, iftdata);
1653                 }
1654
1655                 nla_nest_end(msg, nl_iftype_data);
1656         }
1657
1658         /* add EDMG info */
1659         if (sband->edmg_cap.channels &&
1660             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1661                        sband->edmg_cap.channels) ||
1662             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1663                        sband->edmg_cap.bw_config)))
1664
1665                 return -ENOBUFS;
1666
1667         /* add bitrates */
1668         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1669         if (!nl_rates)
1670                 return -ENOBUFS;
1671
1672         for (i = 0; i < sband->n_bitrates; i++) {
1673                 nl_rate = nla_nest_start_noflag(msg, i);
1674                 if (!nl_rate)
1675                         return -ENOBUFS;
1676
1677                 rate = &sband->bitrates[i];
1678                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1679                                 rate->bitrate))
1680                         return -ENOBUFS;
1681                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1682                     nla_put_flag(msg,
1683                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1684                         return -ENOBUFS;
1685
1686                 nla_nest_end(msg, nl_rate);
1687         }
1688
1689         nla_nest_end(msg, nl_rates);
1690
1691         return 0;
1692 }
1693
1694 static int
1695 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1696                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1697 {
1698         u16 stypes;
1699         struct nlattr *nl_ftypes, *nl_ifs;
1700         enum nl80211_iftype ift;
1701         int i;
1702
1703         if (!mgmt_stypes)
1704                 return 0;
1705
1706         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1707         if (!nl_ifs)
1708                 return -ENOBUFS;
1709
1710         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1711                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1712                 if (!nl_ftypes)
1713                         return -ENOBUFS;
1714                 i = 0;
1715                 stypes = mgmt_stypes[ift].tx;
1716                 while (stypes) {
1717                         if ((stypes & 1) &&
1718                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1719                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1720                                 return -ENOBUFS;
1721                         stypes >>= 1;
1722                         i++;
1723                 }
1724                 nla_nest_end(msg, nl_ftypes);
1725         }
1726
1727         nla_nest_end(msg, nl_ifs);
1728
1729         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1730         if (!nl_ifs)
1731                 return -ENOBUFS;
1732
1733         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1734                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1735                 if (!nl_ftypes)
1736                         return -ENOBUFS;
1737                 i = 0;
1738                 stypes = mgmt_stypes[ift].rx;
1739                 while (stypes) {
1740                         if ((stypes & 1) &&
1741                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1742                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1743                                 return -ENOBUFS;
1744                         stypes >>= 1;
1745                         i++;
1746                 }
1747                 nla_nest_end(msg, nl_ftypes);
1748         }
1749         nla_nest_end(msg, nl_ifs);
1750
1751         return 0;
1752 }
1753
1754 #define CMD(op, n)                                                      \
1755          do {                                                           \
1756                 if (rdev->ops->op) {                                    \
1757                         i++;                                            \
1758                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1759                                 goto nla_put_failure;                   \
1760                 }                                                       \
1761         } while (0)
1762
1763 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1764                                         struct sk_buff *msg)
1765 {
1766         int i = 0;
1767
1768         /*
1769          * do *NOT* add anything into this function, new things need to be
1770          * advertised only to new versions of userspace that can deal with
1771          * the split (and they can't possibly care about new features...
1772          */
1773         CMD(add_virtual_intf, NEW_INTERFACE);
1774         CMD(change_virtual_intf, SET_INTERFACE);
1775         CMD(add_key, NEW_KEY);
1776         CMD(start_ap, START_AP);
1777         CMD(add_station, NEW_STATION);
1778         CMD(add_mpath, NEW_MPATH);
1779         CMD(update_mesh_config, SET_MESH_CONFIG);
1780         CMD(change_bss, SET_BSS);
1781         CMD(auth, AUTHENTICATE);
1782         CMD(assoc, ASSOCIATE);
1783         CMD(deauth, DEAUTHENTICATE);
1784         CMD(disassoc, DISASSOCIATE);
1785         CMD(join_ibss, JOIN_IBSS);
1786         CMD(join_mesh, JOIN_MESH);
1787         CMD(set_pmksa, SET_PMKSA);
1788         CMD(del_pmksa, DEL_PMKSA);
1789         CMD(flush_pmksa, FLUSH_PMKSA);
1790         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1791                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1792         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1793         CMD(mgmt_tx, FRAME);
1794         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1795         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1796                 i++;
1797                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1798                         goto nla_put_failure;
1799         }
1800         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1801             rdev->ops->join_mesh) {
1802                 i++;
1803                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1804                         goto nla_put_failure;
1805         }
1806         CMD(set_wds_peer, SET_WDS_PEER);
1807         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1808                 CMD(tdls_mgmt, TDLS_MGMT);
1809                 CMD(tdls_oper, TDLS_OPER);
1810         }
1811         if (rdev->wiphy.max_sched_scan_reqs)
1812                 CMD(sched_scan_start, START_SCHED_SCAN);
1813         CMD(probe_client, PROBE_CLIENT);
1814         CMD(set_noack_map, SET_NOACK_MAP);
1815         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1816                 i++;
1817                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1818                         goto nla_put_failure;
1819         }
1820         CMD(start_p2p_device, START_P2P_DEVICE);
1821         CMD(set_mcast_rate, SET_MCAST_RATE);
1822 #ifdef CONFIG_NL80211_TESTMODE
1823         CMD(testmode_cmd, TESTMODE);
1824 #endif
1825
1826         if (rdev->ops->connect || rdev->ops->auth) {
1827                 i++;
1828                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1829                         goto nla_put_failure;
1830         }
1831
1832         if (rdev->ops->disconnect || rdev->ops->deauth) {
1833                 i++;
1834                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1835                         goto nla_put_failure;
1836         }
1837
1838         return i;
1839  nla_put_failure:
1840         return -ENOBUFS;
1841 }
1842
1843 static int
1844 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1845                            struct sk_buff *msg)
1846 {
1847         struct nlattr *ftm;
1848
1849         if (!cap->ftm.supported)
1850                 return 0;
1851
1852         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1853         if (!ftm)
1854                 return -ENOBUFS;
1855
1856         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1857                 return -ENOBUFS;
1858         if (cap->ftm.non_asap &&
1859             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1860                 return -ENOBUFS;
1861         if (cap->ftm.request_lci &&
1862             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1863                 return -ENOBUFS;
1864         if (cap->ftm.request_civicloc &&
1865             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1866                 return -ENOBUFS;
1867         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1868                         cap->ftm.preambles))
1869                 return -ENOBUFS;
1870         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1871                         cap->ftm.bandwidths))
1872                 return -ENOBUFS;
1873         if (cap->ftm.max_bursts_exponent >= 0 &&
1874             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1875                         cap->ftm.max_bursts_exponent))
1876                 return -ENOBUFS;
1877         if (cap->ftm.max_ftms_per_burst &&
1878             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1879                         cap->ftm.max_ftms_per_burst))
1880                 return -ENOBUFS;
1881
1882         nla_nest_end(msg, ftm);
1883         return 0;
1884 }
1885
1886 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1887                                   struct sk_buff *msg)
1888 {
1889         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1890         struct nlattr *pmsr, *caps;
1891
1892         if (!cap)
1893                 return 0;
1894
1895         /*
1896          * we don't need to clean up anything here since the caller
1897          * will genlmsg_cancel() if we fail
1898          */
1899
1900         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1901         if (!pmsr)
1902                 return -ENOBUFS;
1903
1904         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1905                 return -ENOBUFS;
1906
1907         if (cap->report_ap_tsf &&
1908             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1909                 return -ENOBUFS;
1910
1911         if (cap->randomize_mac_addr &&
1912             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1913                 return -ENOBUFS;
1914
1915         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1916         if (!caps)
1917                 return -ENOBUFS;
1918
1919         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1920                 return -ENOBUFS;
1921
1922         nla_nest_end(msg, caps);
1923         nla_nest_end(msg, pmsr);
1924
1925         return 0;
1926 }
1927
1928 static int
1929 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
1930                               struct sk_buff *msg)
1931 {
1932         int i;
1933         struct nlattr *nested, *nested_akms;
1934         const struct wiphy_iftype_akm_suites *iftype_akms;
1935
1936         if (!rdev->wiphy.num_iftype_akm_suites ||
1937             !rdev->wiphy.iftype_akm_suites)
1938                 return 0;
1939
1940         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
1941         if (!nested)
1942                 return -ENOBUFS;
1943
1944         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
1945                 nested_akms = nla_nest_start(msg, i + 1);
1946                 if (!nested_akms)
1947                         return -ENOBUFS;
1948
1949                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
1950
1951                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
1952                                         iftype_akms->iftypes_mask))
1953                         return -ENOBUFS;
1954
1955                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
1956                             sizeof(u32) * iftype_akms->n_akm_suites,
1957                             iftype_akms->akm_suites)) {
1958                         return -ENOBUFS;
1959                 }
1960                 nla_nest_end(msg, nested_akms);
1961         }
1962
1963         nla_nest_end(msg, nested);
1964
1965         return 0;
1966 }
1967
1968 static int
1969 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
1970                                struct sk_buff *msg)
1971 {
1972         struct nlattr *supp;
1973
1974         if (!rdev->wiphy.tid_config_support.vif &&
1975             !rdev->wiphy.tid_config_support.peer)
1976                 return 0;
1977
1978         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
1979         if (!supp)
1980                 return -ENOSPC;
1981
1982         if (rdev->wiphy.tid_config_support.vif &&
1983             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
1984                               rdev->wiphy.tid_config_support.vif,
1985                               NL80211_TID_CONFIG_ATTR_PAD))
1986                 goto fail;
1987
1988         if (rdev->wiphy.tid_config_support.peer &&
1989             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
1990                               rdev->wiphy.tid_config_support.peer,
1991                               NL80211_TID_CONFIG_ATTR_PAD))
1992                 goto fail;
1993
1994         /* for now we just use the same value ... makes more sense */
1995         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
1996                        rdev->wiphy.tid_config_support.max_retry))
1997                 goto fail;
1998         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
1999                        rdev->wiphy.tid_config_support.max_retry))
2000                 goto fail;
2001
2002         nla_nest_end(msg, supp);
2003
2004         return 0;
2005 fail:
2006         nla_nest_cancel(msg, supp);
2007         return -ENOBUFS;
2008 }
2009
2010 struct nl80211_dump_wiphy_state {
2011         s64 filter_wiphy;
2012         long start;
2013         long split_start, band_start, chan_start, capa_start;
2014         bool split;
2015 };
2016
2017 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2018                               enum nl80211_commands cmd,
2019                               struct sk_buff *msg, u32 portid, u32 seq,
2020                               int flags, struct nl80211_dump_wiphy_state *state)
2021 {
2022         void *hdr;
2023         struct nlattr *nl_bands, *nl_band;
2024         struct nlattr *nl_freqs, *nl_freq;
2025         struct nlattr *nl_cmds;
2026         enum nl80211_band band;
2027         struct ieee80211_channel *chan;
2028         int i;
2029         const struct ieee80211_txrx_stypes *mgmt_stypes =
2030                                 rdev->wiphy.mgmt_stypes;
2031         u32 features;
2032
2033         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2034         if (!hdr)
2035                 return -ENOBUFS;
2036
2037         if (WARN_ON(!state))
2038                 return -EINVAL;
2039
2040         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2041             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2042                            wiphy_name(&rdev->wiphy)) ||
2043             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2044                         cfg80211_rdev_list_generation))
2045                 goto nla_put_failure;
2046
2047         if (cmd != NL80211_CMD_NEW_WIPHY)
2048                 goto finish;
2049
2050         switch (state->split_start) {
2051         case 0:
2052                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2053                                rdev->wiphy.retry_short) ||
2054                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2055                                rdev->wiphy.retry_long) ||
2056                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2057                                 rdev->wiphy.frag_threshold) ||
2058                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2059                                 rdev->wiphy.rts_threshold) ||
2060                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2061                                rdev->wiphy.coverage_class) ||
2062                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2063                                rdev->wiphy.max_scan_ssids) ||
2064                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2065                                rdev->wiphy.max_sched_scan_ssids) ||
2066                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2067                                 rdev->wiphy.max_scan_ie_len) ||
2068                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2069                                 rdev->wiphy.max_sched_scan_ie_len) ||
2070                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2071                                rdev->wiphy.max_match_sets) ||
2072                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2073                                 rdev->wiphy.max_sched_scan_plans) ||
2074                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2075                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2076                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2077                                 rdev->wiphy.max_sched_scan_plan_iterations))
2078                         goto nla_put_failure;
2079
2080                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2081                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2082                         goto nla_put_failure;
2083                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2084                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2085                         goto nla_put_failure;
2086                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2087                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2088                         goto nla_put_failure;
2089                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2090                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2091                         goto nla_put_failure;
2092                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2093                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2094                         goto nla_put_failure;
2095                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2096                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2097                         goto nla_put_failure;
2098                 state->split_start++;
2099                 if (state->split)
2100                         break;
2101                 /* fall through */
2102         case 1:
2103                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2104                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2105                             rdev->wiphy.cipher_suites))
2106                         goto nla_put_failure;
2107
2108                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2109                                rdev->wiphy.max_num_pmkids))
2110                         goto nla_put_failure;
2111
2112                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2113                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2114                         goto nla_put_failure;
2115
2116                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2117                                 rdev->wiphy.available_antennas_tx) ||
2118                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2119                                 rdev->wiphy.available_antennas_rx))
2120                         goto nla_put_failure;
2121
2122                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2123                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2124                                 rdev->wiphy.probe_resp_offload))
2125                         goto nla_put_failure;
2126
2127                 if ((rdev->wiphy.available_antennas_tx ||
2128                      rdev->wiphy.available_antennas_rx) &&
2129                     rdev->ops->get_antenna) {
2130                         u32 tx_ant = 0, rx_ant = 0;
2131                         int res;
2132
2133                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2134                         if (!res) {
2135                                 if (nla_put_u32(msg,
2136                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2137                                                 tx_ant) ||
2138                                     nla_put_u32(msg,
2139                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2140                                                 rx_ant))
2141                                         goto nla_put_failure;
2142                         }
2143                 }
2144
2145                 state->split_start++;
2146                 if (state->split)
2147                         break;
2148                 /* fall through */
2149         case 2:
2150                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2151                                         rdev->wiphy.interface_modes))
2152                                 goto nla_put_failure;
2153                 state->split_start++;
2154                 if (state->split)
2155                         break;
2156                 /* fall through */
2157         case 3:
2158                 nl_bands = nla_nest_start_noflag(msg,
2159                                                  NL80211_ATTR_WIPHY_BANDS);
2160                 if (!nl_bands)
2161                         goto nla_put_failure;
2162
2163                 for (band = state->band_start;
2164                      band < NUM_NL80211_BANDS; band++) {
2165                         struct ieee80211_supported_band *sband;
2166
2167                         sband = rdev->wiphy.bands[band];
2168
2169                         if (!sband)
2170                                 continue;
2171
2172                         nl_band = nla_nest_start_noflag(msg, band);
2173                         if (!nl_band)
2174                                 goto nla_put_failure;
2175
2176                         switch (state->chan_start) {
2177                         case 0:
2178                                 if (nl80211_send_band_rateinfo(msg, sband))
2179                                         goto nla_put_failure;
2180                                 state->chan_start++;
2181                                 if (state->split)
2182                                         break;
2183                                 /* fall through */
2184                         default:
2185                                 /* add frequencies */
2186                                 nl_freqs = nla_nest_start_noflag(msg,
2187                                                                  NL80211_BAND_ATTR_FREQS);
2188                                 if (!nl_freqs)
2189                                         goto nla_put_failure;
2190
2191                                 for (i = state->chan_start - 1;
2192                                      i < sband->n_channels;
2193                                      i++) {
2194                                         nl_freq = nla_nest_start_noflag(msg,
2195                                                                         i);
2196                                         if (!nl_freq)
2197                                                 goto nla_put_failure;
2198
2199                                         chan = &sband->channels[i];
2200
2201                                         if (nl80211_msg_put_channel(
2202                                                         msg, &rdev->wiphy, chan,
2203                                                         state->split))
2204                                                 goto nla_put_failure;
2205
2206                                         nla_nest_end(msg, nl_freq);
2207                                         if (state->split)
2208                                                 break;
2209                                 }
2210                                 if (i < sband->n_channels)
2211                                         state->chan_start = i + 2;
2212                                 else
2213                                         state->chan_start = 0;
2214                                 nla_nest_end(msg, nl_freqs);
2215                         }
2216
2217                         nla_nest_end(msg, nl_band);
2218
2219                         if (state->split) {
2220                                 /* start again here */
2221                                 if (state->chan_start)
2222                                         band--;
2223                                 break;
2224                         }
2225                 }
2226                 nla_nest_end(msg, nl_bands);
2227
2228                 if (band < NUM_NL80211_BANDS)
2229                         state->band_start = band + 1;
2230                 else
2231                         state->band_start = 0;
2232
2233                 /* if bands & channels are done, continue outside */
2234                 if (state->band_start == 0 && state->chan_start == 0)
2235                         state->split_start++;
2236                 if (state->split)
2237                         break;
2238                 /* fall through */
2239         case 4:
2240                 nl_cmds = nla_nest_start_noflag(msg,
2241                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2242                 if (!nl_cmds)
2243                         goto nla_put_failure;
2244
2245                 i = nl80211_add_commands_unsplit(rdev, msg);
2246                 if (i < 0)
2247                         goto nla_put_failure;
2248                 if (state->split) {
2249                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2250                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2251                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2252                                 CMD(channel_switch, CHANNEL_SWITCH);
2253                         CMD(set_qos_map, SET_QOS_MAP);
2254                         if (rdev->wiphy.features &
2255                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2256                                 CMD(add_tx_ts, ADD_TX_TS);
2257                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2258                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2259                         CMD(update_ft_ies, UPDATE_FT_IES);
2260                 }
2261 #undef CMD
2262
2263                 nla_nest_end(msg, nl_cmds);
2264                 state->split_start++;
2265                 if (state->split)
2266                         break;
2267                 /* fall through */
2268         case 5:
2269                 if (rdev->ops->remain_on_channel &&
2270                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2271                     nla_put_u32(msg,
2272                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2273                                 rdev->wiphy.max_remain_on_channel_duration))
2274                         goto nla_put_failure;
2275
2276                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2277                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2278                         goto nla_put_failure;
2279
2280                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2281                         goto nla_put_failure;
2282                 state->split_start++;
2283                 if (state->split)
2284                         break;
2285                 /* fall through */
2286         case 6:
2287 #ifdef CONFIG_PM
2288                 if (nl80211_send_wowlan(msg, rdev, state->split))
2289                         goto nla_put_failure;
2290                 state->split_start++;
2291                 if (state->split)
2292                         break;
2293 #else
2294                 state->split_start++;
2295 #endif
2296                 /* fall through */
2297         case 7:
2298                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2299                                         rdev->wiphy.software_iftypes))
2300                         goto nla_put_failure;
2301
2302                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2303                                                    state->split))
2304                         goto nla_put_failure;
2305
2306                 state->split_start++;
2307                 if (state->split)
2308                         break;
2309                 /* fall through */
2310         case 8:
2311                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2312                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2313                                 rdev->wiphy.ap_sme_capa))
2314                         goto nla_put_failure;
2315
2316                 features = rdev->wiphy.features;
2317                 /*
2318                  * We can only add the per-channel limit information if the
2319                  * dump is split, otherwise it makes it too big. Therefore
2320                  * only advertise it in that case.
2321                  */
2322                 if (state->split)
2323                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2324                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2325                         goto nla_put_failure;
2326
2327                 if (rdev->wiphy.ht_capa_mod_mask &&
2328                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2329                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2330                             rdev->wiphy.ht_capa_mod_mask))
2331                         goto nla_put_failure;
2332
2333                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2334                     rdev->wiphy.max_acl_mac_addrs &&
2335                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2336                                 rdev->wiphy.max_acl_mac_addrs))
2337                         goto nla_put_failure;
2338
2339                 /*
2340                  * Any information below this point is only available to
2341                  * applications that can deal with it being split. This
2342                  * helps ensure that newly added capabilities don't break
2343                  * older tools by overrunning their buffers.
2344                  *
2345                  * We still increment split_start so that in the split
2346                  * case we'll continue with more data in the next round,
2347                  * but break unconditionally so unsplit data stops here.
2348                  */
2349                 state->split_start++;
2350                 break;
2351         case 9:
2352                 if (rdev->wiphy.extended_capabilities &&
2353                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2354                              rdev->wiphy.extended_capabilities_len,
2355                              rdev->wiphy.extended_capabilities) ||
2356                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2357                              rdev->wiphy.extended_capabilities_len,
2358                              rdev->wiphy.extended_capabilities_mask)))
2359                         goto nla_put_failure;
2360
2361                 if (rdev->wiphy.vht_capa_mod_mask &&
2362                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2363                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2364                             rdev->wiphy.vht_capa_mod_mask))
2365                         goto nla_put_failure;
2366
2367                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2368                             rdev->wiphy.perm_addr))
2369                         goto nla_put_failure;
2370
2371                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2372                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2373                             rdev->wiphy.addr_mask))
2374                         goto nla_put_failure;
2375
2376                 if (rdev->wiphy.n_addresses > 1) {
2377                         void *attr;
2378
2379                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2380                         if (!attr)
2381                                 goto nla_put_failure;
2382
2383                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2384                                 if (nla_put(msg, i + 1, ETH_ALEN,
2385                                             rdev->wiphy.addresses[i].addr))
2386                                         goto nla_put_failure;
2387
2388                         nla_nest_end(msg, attr);
2389                 }
2390
2391                 state->split_start++;
2392                 break;
2393         case 10:
2394                 if (nl80211_send_coalesce(msg, rdev))
2395                         goto nla_put_failure;
2396
2397                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2398                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2399                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2400                         goto nla_put_failure;
2401
2402                 if (rdev->wiphy.max_ap_assoc_sta &&
2403                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2404                                 rdev->wiphy.max_ap_assoc_sta))
2405                         goto nla_put_failure;
2406
2407                 state->split_start++;
2408                 break;
2409         case 11:
2410                 if (rdev->wiphy.n_vendor_commands) {
2411                         const struct nl80211_vendor_cmd_info *info;
2412                         struct nlattr *nested;
2413
2414                         nested = nla_nest_start_noflag(msg,
2415                                                        NL80211_ATTR_VENDOR_DATA);
2416                         if (!nested)
2417                                 goto nla_put_failure;
2418
2419                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2420                                 info = &rdev->wiphy.vendor_commands[i].info;
2421                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2422                                         goto nla_put_failure;
2423                         }
2424                         nla_nest_end(msg, nested);
2425                 }
2426
2427                 if (rdev->wiphy.n_vendor_events) {
2428                         const struct nl80211_vendor_cmd_info *info;
2429                         struct nlattr *nested;
2430
2431                         nested = nla_nest_start_noflag(msg,
2432                                                        NL80211_ATTR_VENDOR_EVENTS);
2433                         if (!nested)
2434                                 goto nla_put_failure;
2435
2436                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2437                                 info = &rdev->wiphy.vendor_events[i];
2438                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2439                                         goto nla_put_failure;
2440                         }
2441                         nla_nest_end(msg, nested);
2442                 }
2443                 state->split_start++;
2444                 break;
2445         case 12:
2446                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2447                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2448                                rdev->wiphy.max_num_csa_counters))
2449                         goto nla_put_failure;
2450
2451                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2452                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2453                         goto nla_put_failure;
2454
2455                 if (rdev->wiphy.max_sched_scan_reqs &&
2456                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2457                                 rdev->wiphy.max_sched_scan_reqs))
2458                         goto nla_put_failure;
2459
2460                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2461                             sizeof(rdev->wiphy.ext_features),
2462                             rdev->wiphy.ext_features))
2463                         goto nla_put_failure;
2464
2465                 if (rdev->wiphy.bss_select_support) {
2466                         struct nlattr *nested;
2467                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2468
2469                         nested = nla_nest_start_noflag(msg,
2470                                                        NL80211_ATTR_BSS_SELECT);
2471                         if (!nested)
2472                                 goto nla_put_failure;
2473
2474                         i = 0;
2475                         while (bss_select_support) {
2476                                 if ((bss_select_support & 1) &&
2477                                     nla_put_flag(msg, i))
2478                                         goto nla_put_failure;
2479                                 i++;
2480                                 bss_select_support >>= 1;
2481                         }
2482                         nla_nest_end(msg, nested);
2483                 }
2484
2485                 state->split_start++;
2486                 break;
2487         case 13:
2488                 if (rdev->wiphy.num_iftype_ext_capab &&
2489                     rdev->wiphy.iftype_ext_capab) {
2490                         struct nlattr *nested_ext_capab, *nested;
2491
2492                         nested = nla_nest_start_noflag(msg,
2493                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2494                         if (!nested)
2495                                 goto nla_put_failure;
2496
2497                         for (i = state->capa_start;
2498                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2499                                 const struct wiphy_iftype_ext_capab *capab;
2500
2501                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2502
2503                                 nested_ext_capab = nla_nest_start_noflag(msg,
2504                                                                          i);
2505                                 if (!nested_ext_capab ||
2506                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2507                                                 capab->iftype) ||
2508                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2509                                             capab->extended_capabilities_len,
2510                                             capab->extended_capabilities) ||
2511                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2512                                             capab->extended_capabilities_len,
2513                                             capab->extended_capabilities_mask))
2514                                         goto nla_put_failure;
2515
2516                                 nla_nest_end(msg, nested_ext_capab);
2517                                 if (state->split)
2518                                         break;
2519                         }
2520                         nla_nest_end(msg, nested);
2521                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2522                                 state->capa_start = i + 1;
2523                                 break;
2524                         }
2525                 }
2526
2527                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2528                                 rdev->wiphy.nan_supported_bands))
2529                         goto nla_put_failure;
2530
2531                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2532                                             NL80211_EXT_FEATURE_TXQS)) {
2533                         struct cfg80211_txq_stats txqstats = {};
2534                         int res;
2535
2536                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2537                         if (!res &&
2538                             !nl80211_put_txq_stats(msg, &txqstats,
2539                                                    NL80211_ATTR_TXQ_STATS))
2540                                 goto nla_put_failure;
2541
2542                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2543                                         rdev->wiphy.txq_limit))
2544                                 goto nla_put_failure;
2545                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2546                                         rdev->wiphy.txq_memory_limit))
2547                                 goto nla_put_failure;
2548                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2549                                         rdev->wiphy.txq_quantum))
2550                                 goto nla_put_failure;
2551                 }
2552
2553                 state->split_start++;
2554                 break;
2555         case 14:
2556                 if (nl80211_send_pmsr_capa(rdev, msg))
2557                         goto nla_put_failure;
2558
2559                 state->split_start++;
2560                 break;
2561         case 15:
2562                 if (rdev->wiphy.akm_suites &&
2563                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2564                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2565                             rdev->wiphy.akm_suites))
2566                         goto nla_put_failure;
2567
2568                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2569                         goto nla_put_failure;
2570
2571                 if (nl80211_put_tid_config_support(rdev, msg))
2572                         goto nla_put_failure;
2573
2574                 /* done */
2575                 state->split_start = 0;
2576                 break;
2577         }
2578  finish:
2579         genlmsg_end(msg, hdr);
2580         return 0;
2581
2582  nla_put_failure:
2583         genlmsg_cancel(msg, hdr);
2584         return -EMSGSIZE;
2585 }
2586
2587 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2588                                     struct netlink_callback *cb,
2589                                     struct nl80211_dump_wiphy_state *state)
2590 {
2591         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2592         int ret;
2593
2594         if (!tb)
2595                 return -ENOMEM;
2596
2597         ret = nlmsg_parse_deprecated(cb->nlh,
2598                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2599                                      tb, nl80211_fam.maxattr,
2600                                      nl80211_policy, NULL);
2601         /* ignore parse errors for backward compatibility */
2602         if (ret) {
2603                 ret = 0;
2604                 goto out;
2605         }
2606
2607         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2608         if (tb[NL80211_ATTR_WIPHY])
2609                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2610         if (tb[NL80211_ATTR_WDEV])
2611                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2612         if (tb[NL80211_ATTR_IFINDEX]) {
2613                 struct net_device *netdev;
2614                 struct cfg80211_registered_device *rdev;
2615                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2616
2617                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2618                 if (!netdev) {
2619                         ret = -ENODEV;
2620                         goto out;
2621                 }
2622                 if (netdev->ieee80211_ptr) {
2623                         rdev = wiphy_to_rdev(
2624                                 netdev->ieee80211_ptr->wiphy);
2625                         state->filter_wiphy = rdev->wiphy_idx;
2626                 }
2627         }
2628
2629         ret = 0;
2630 out:
2631         kfree(tb);
2632         return ret;
2633 }
2634
2635 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2636 {
2637         int idx = 0, ret;
2638         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2639         struct cfg80211_registered_device *rdev;
2640
2641         rtnl_lock();
2642         if (!state) {
2643                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2644                 if (!state) {
2645                         rtnl_unlock();
2646                         return -ENOMEM;
2647                 }
2648                 state->filter_wiphy = -1;
2649                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2650                 if (ret) {
2651                         kfree(state);
2652                         rtnl_unlock();
2653                         return ret;
2654                 }
2655                 cb->args[0] = (long)state;
2656         }
2657
2658         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2659                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2660                         continue;
2661                 if (++idx <= state->start)
2662                         continue;
2663                 if (state->filter_wiphy != -1 &&
2664                     state->filter_wiphy != rdev->wiphy_idx)
2665                         continue;
2666                 /* attempt to fit multiple wiphy data chunks into the skb */
2667                 do {
2668                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2669                                                  skb,
2670                                                  NETLINK_CB(cb->skb).portid,
2671                                                  cb->nlh->nlmsg_seq,
2672                                                  NLM_F_MULTI, state);
2673                         if (ret < 0) {
2674                                 /*
2675                                  * If sending the wiphy data didn't fit (ENOBUFS
2676                                  * or EMSGSIZE returned), this SKB is still
2677                                  * empty (so it's not too big because another
2678                                  * wiphy dataset is already in the skb) and
2679                                  * we've not tried to adjust the dump allocation
2680                                  * yet ... then adjust the alloc size to be
2681                                  * bigger, and return 1 but with the empty skb.
2682                                  * This results in an empty message being RX'ed
2683                                  * in userspace, but that is ignored.
2684                                  *
2685                                  * We can then retry with the larger buffer.
2686                                  */
2687                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2688                                     !skb->len && !state->split &&
2689                                     cb->min_dump_alloc < 4096) {
2690                                         cb->min_dump_alloc = 4096;
2691                                         state->split_start = 0;
2692                                         rtnl_unlock();
2693                                         return 1;
2694                                 }
2695                                 idx--;
2696                                 break;
2697                         }
2698                 } while (state->split_start > 0);
2699                 break;
2700         }
2701         rtnl_unlock();
2702
2703         state->start = idx;
2704
2705         return skb->len;
2706 }
2707
2708 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2709 {
2710         kfree((void *)cb->args[0]);
2711         return 0;
2712 }
2713
2714 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2715 {
2716         struct sk_buff *msg;
2717         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2718         struct nl80211_dump_wiphy_state state = {};
2719
2720         msg = nlmsg_new(4096, GFP_KERNEL);
2721         if (!msg)
2722                 return -ENOMEM;
2723
2724         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2725                                info->snd_portid, info->snd_seq, 0,
2726                                &state) < 0) {
2727                 nlmsg_free(msg);
2728                 return -ENOBUFS;
2729         }
2730
2731         return genlmsg_reply(msg, info);
2732 }
2733
2734 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2735         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2736         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2737         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2738         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2739         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2740 };
2741
2742 static int parse_txq_params(struct nlattr *tb[],
2743                             struct ieee80211_txq_params *txq_params)
2744 {
2745         u8 ac;
2746
2747         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2748             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2749             !tb[NL80211_TXQ_ATTR_AIFS])
2750                 return -EINVAL;
2751
2752         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2753         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2754         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2755         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2756         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2757
2758         if (ac >= NL80211_NUM_ACS)
2759                 return -EINVAL;
2760         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2761         return 0;
2762 }
2763
2764 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2765 {
2766         /*
2767          * You can only set the channel explicitly for WDS interfaces,
2768          * all others have their channel managed via their respective
2769          * "establish a connection" command (connect, join, ...)
2770          *
2771          * For AP/GO and mesh mode, the channel can be set with the
2772          * channel userspace API, but is only stored and passed to the
2773          * low-level driver when the AP starts or the mesh is joined.
2774          * This is for backward compatibility, userspace can also give
2775          * the channel in the start-ap or join-mesh commands instead.
2776          *
2777          * Monitors are special as they are normally slaved to
2778          * whatever else is going on, so they have their own special
2779          * operation to set the monitor channel if possible.
2780          */
2781         return !wdev ||
2782                 wdev->iftype == NL80211_IFTYPE_AP ||
2783                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2784                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2785                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2786 }
2787
2788 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2789                           struct genl_info *info,
2790                           struct cfg80211_chan_def *chandef)
2791 {
2792         struct netlink_ext_ack *extack = info->extack;
2793         struct nlattr **attrs = info->attrs;
2794         u32 control_freq;
2795
2796         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2797                 return -EINVAL;
2798
2799         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2800
2801         memset(chandef, 0, sizeof(*chandef));
2802
2803         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2804         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2805         chandef->center_freq1 = control_freq;
2806         chandef->center_freq2 = 0;
2807
2808         /* Primary channel not allowed */
2809         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2810                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2811                                     "Channel is disabled");
2812                 return -EINVAL;
2813         }
2814
2815         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2816                 enum nl80211_channel_type chantype;
2817
2818                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2819
2820                 switch (chantype) {
2821                 case NL80211_CHAN_NO_HT:
2822                 case NL80211_CHAN_HT20:
2823                 case NL80211_CHAN_HT40PLUS:
2824                 case NL80211_CHAN_HT40MINUS:
2825                         cfg80211_chandef_create(chandef, chandef->chan,
2826                                                 chantype);
2827                         /* user input for center_freq is incorrect */
2828                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2829                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2830                                 NL_SET_ERR_MSG_ATTR(extack,
2831                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2832                                                     "bad center frequency 1");
2833                                 return -EINVAL;
2834                         }
2835                         /* center_freq2 must be zero */
2836                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2837                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2838                                 NL_SET_ERR_MSG_ATTR(extack,
2839                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2840                                                     "center frequency 2 can't be used");
2841                                 return -EINVAL;
2842                         }
2843                         break;
2844                 default:
2845                         NL_SET_ERR_MSG_ATTR(extack,
2846                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2847                                             "invalid channel type");
2848                         return -EINVAL;
2849                 }
2850         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2851                 chandef->width =
2852                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2853                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2854                         chandef->center_freq1 =
2855                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2856                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2857                         chandef->center_freq2 =
2858                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2859         }
2860
2861         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2862                 chandef->edmg.channels =
2863                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2864
2865                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2866                         chandef->edmg.bw_config =
2867                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2868         } else {
2869                 chandef->edmg.bw_config = 0;
2870                 chandef->edmg.channels = 0;
2871         }
2872
2873         if (!cfg80211_chandef_valid(chandef)) {
2874                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2875                 return -EINVAL;
2876         }
2877
2878         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2879                                      IEEE80211_CHAN_DISABLED)) {
2880                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2881                 return -EINVAL;
2882         }
2883
2884         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2885              chandef->width == NL80211_CHAN_WIDTH_10) &&
2886             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2887                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2888                 return -EINVAL;
2889         }
2890
2891         return 0;
2892 }
2893
2894 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2895                                  struct net_device *dev,
2896                                  struct genl_info *info)
2897 {
2898         struct cfg80211_chan_def chandef;
2899         int result;
2900         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2901         struct wireless_dev *wdev = NULL;
2902
2903         if (dev)
2904                 wdev = dev->ieee80211_ptr;
2905         if (!nl80211_can_set_dev_channel(wdev))
2906                 return -EOPNOTSUPP;
2907         if (wdev)
2908                 iftype = wdev->iftype;
2909
2910         result = nl80211_parse_chandef(rdev, info, &chandef);
2911         if (result)
2912                 return result;
2913
2914         switch (iftype) {
2915         case NL80211_IFTYPE_AP:
2916         case NL80211_IFTYPE_P2P_GO:
2917                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2918                                                    iftype)) {
2919                         result = -EINVAL;
2920                         break;
2921                 }
2922                 if (wdev->beacon_interval) {
2923                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2924                             !(rdev->wiphy.features &
2925                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2926                                 result = -EBUSY;
2927                                 break;
2928                         }
2929
2930                         /* Only allow dynamic channel width changes */
2931                         if (chandef.chan != wdev->preset_chandef.chan) {
2932                                 result = -EBUSY;
2933                                 break;
2934                         }
2935                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2936                         if (result)
2937                                 break;
2938                 }
2939                 wdev->preset_chandef = chandef;
2940                 result = 0;
2941                 break;
2942         case NL80211_IFTYPE_MESH_POINT:
2943                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2944                 break;
2945         case NL80211_IFTYPE_MONITOR:
2946                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2947                 break;
2948         default:
2949                 result = -EINVAL;
2950         }
2951
2952         return result;
2953 }
2954
2955 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2956 {
2957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2958         struct net_device *netdev = info->user_ptr[1];
2959
2960         return __nl80211_set_channel(rdev, netdev, info);
2961 }
2962
2963 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2964 {
2965         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2966         struct net_device *dev = info->user_ptr[1];
2967         struct wireless_dev *wdev = dev->ieee80211_ptr;
2968         const u8 *bssid;
2969
2970         if (!info->attrs[NL80211_ATTR_MAC])
2971                 return -EINVAL;
2972
2973         if (netif_running(dev))
2974                 return -EBUSY;
2975
2976         if (!rdev->ops->set_wds_peer)
2977                 return -EOPNOTSUPP;
2978
2979         if (wdev->iftype != NL80211_IFTYPE_WDS)
2980                 return -EOPNOTSUPP;
2981
2982         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2983         return rdev_set_wds_peer(rdev, dev, bssid);
2984 }
2985
2986 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2987 {
2988         struct cfg80211_registered_device *rdev;
2989         struct net_device *netdev = NULL;
2990         struct wireless_dev *wdev;
2991         int result = 0, rem_txq_params = 0;
2992         struct nlattr *nl_txq_params;
2993         u32 changed;
2994         u8 retry_short = 0, retry_long = 0;
2995         u32 frag_threshold = 0, rts_threshold = 0;
2996         u8 coverage_class = 0;
2997         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2998
2999         ASSERT_RTNL();
3000
3001         /*
3002          * Try to find the wiphy and netdev. Normally this
3003          * function shouldn't need the netdev, but this is
3004          * done for backward compatibility -- previously
3005          * setting the channel was done per wiphy, but now
3006          * it is per netdev. Previous userland like hostapd
3007          * also passed a netdev to set_wiphy, so that it is
3008          * possible to let that go to the right netdev!
3009          */
3010
3011         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3012                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3013
3014                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3015                 if (netdev && netdev->ieee80211_ptr)
3016                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3017                 else
3018                         netdev = NULL;
3019         }
3020
3021         if (!netdev) {
3022                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3023                                                   info->attrs);
3024                 if (IS_ERR(rdev))
3025                         return PTR_ERR(rdev);
3026                 wdev = NULL;
3027                 netdev = NULL;
3028                 result = 0;
3029         } else
3030                 wdev = netdev->ieee80211_ptr;
3031
3032         /*
3033          * end workaround code, by now the rdev is available
3034          * and locked, and wdev may or may not be NULL.
3035          */
3036
3037         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3038                 result = cfg80211_dev_rename(
3039                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3040
3041         if (result)
3042                 return result;
3043
3044         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3045                 struct ieee80211_txq_params txq_params;
3046                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3047
3048                 if (!rdev->ops->set_txq_params)
3049                         return -EOPNOTSUPP;
3050
3051                 if (!netdev)
3052                         return -EINVAL;
3053
3054                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3055                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3056                         return -EINVAL;
3057
3058                 if (!netif_running(netdev))
3059                         return -ENETDOWN;
3060
3061                 nla_for_each_nested(nl_txq_params,
3062                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3063                                     rem_txq_params) {
3064                         result = nla_parse_nested_deprecated(tb,
3065                                                              NL80211_TXQ_ATTR_MAX,
3066                                                              nl_txq_params,
3067                                                              txq_params_policy,
3068                                                              info->extack);
3069                         if (result)
3070                                 return result;
3071                         result = parse_txq_params(tb, &txq_params);
3072                         if (result)
3073                                 return result;
3074
3075                         result = rdev_set_txq_params(rdev, netdev,
3076                                                      &txq_params);
3077                         if (result)
3078                                 return result;
3079                 }
3080         }
3081
3082         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3083                 result = __nl80211_set_channel(
3084                         rdev,
3085                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3086                         info);
3087                 if (result)
3088                         return result;
3089         }
3090
3091         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3092                 struct wireless_dev *txp_wdev = wdev;
3093                 enum nl80211_tx_power_setting type;
3094                 int idx, mbm = 0;
3095
3096                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3097                         txp_wdev = NULL;
3098
3099                 if (!rdev->ops->set_tx_power)
3100                         return -EOPNOTSUPP;
3101
3102                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3103                 type = nla_get_u32(info->attrs[idx]);
3104
3105                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3106                     (type != NL80211_TX_POWER_AUTOMATIC))
3107                         return -EINVAL;
3108
3109                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3110                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3111                         mbm = nla_get_u32(info->attrs[idx]);
3112                 }
3113
3114                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3115                 if (result)
3116                         return result;
3117         }
3118
3119         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3120             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3121                 u32 tx_ant, rx_ant;
3122
3123                 if ((!rdev->wiphy.available_antennas_tx &&
3124                      !rdev->wiphy.available_antennas_rx) ||
3125                     !rdev->ops->set_antenna)
3126                         return -EOPNOTSUPP;
3127
3128                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3129                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3130
3131                 /* reject antenna configurations which don't match the
3132                  * available antenna masks, except for the "all" mask */
3133                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3134                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3135                         return -EINVAL;
3136
3137                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3138                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3139
3140                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3141                 if (result)
3142                         return result;
3143         }
3144
3145         changed = 0;
3146
3147         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3148                 retry_short = nla_get_u8(
3149                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3150
3151                 changed |= WIPHY_PARAM_RETRY_SHORT;
3152         }
3153
3154         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3155                 retry_long = nla_get_u8(
3156                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3157
3158                 changed |= WIPHY_PARAM_RETRY_LONG;
3159         }
3160
3161         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3162                 frag_threshold = nla_get_u32(
3163                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3164                 if (frag_threshold < 256)
3165                         return -EINVAL;
3166
3167                 if (frag_threshold != (u32) -1) {
3168                         /*
3169                          * Fragments (apart from the last one) are required to
3170                          * have even length. Make the fragmentation code
3171                          * simpler by stripping LSB should someone try to use
3172                          * odd threshold value.
3173                          */
3174                         frag_threshold &= ~0x1;
3175                 }
3176                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3177         }
3178
3179         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3180                 rts_threshold = nla_get_u32(
3181                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3182                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3183         }
3184
3185         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3186                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3187                         return -EINVAL;
3188
3189                 coverage_class = nla_get_u8(
3190                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3191                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3192         }
3193
3194         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3195                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3196                         return -EOPNOTSUPP;
3197
3198                 changed |= WIPHY_PARAM_DYN_ACK;
3199         }
3200
3201         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3202                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3203                                              NL80211_EXT_FEATURE_TXQS))
3204                         return -EOPNOTSUPP;
3205                 txq_limit = nla_get_u32(
3206                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3207                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3208         }
3209
3210         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3211                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3212                                              NL80211_EXT_FEATURE_TXQS))
3213                         return -EOPNOTSUPP;
3214                 txq_memory_limit = nla_get_u32(
3215                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3216                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3217         }
3218
3219         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3220                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3221                                              NL80211_EXT_FEATURE_TXQS))
3222                         return -EOPNOTSUPP;
3223                 txq_quantum = nla_get_u32(
3224                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3225                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3226         }
3227
3228         if (changed) {
3229                 u8 old_retry_short, old_retry_long;
3230                 u32 old_frag_threshold, old_rts_threshold;
3231                 u8 old_coverage_class;
3232                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3233
3234                 if (!rdev->ops->set_wiphy_params)
3235                         return -EOPNOTSUPP;
3236
3237                 old_retry_short = rdev->wiphy.retry_short;
3238                 old_retry_long = rdev->wiphy.retry_long;
3239                 old_frag_threshold = rdev->wiphy.frag_threshold;
3240                 old_rts_threshold = rdev->wiphy.rts_threshold;
3241                 old_coverage_class = rdev->wiphy.coverage_class;
3242                 old_txq_limit = rdev->wiphy.txq_limit;
3243                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3244                 old_txq_quantum = rdev->wiphy.txq_quantum;
3245
3246                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3247                         rdev->wiphy.retry_short = retry_short;
3248                 if (changed & WIPHY_PARAM_RETRY_LONG)
3249                         rdev->wiphy.retry_long = retry_long;
3250                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3251                         rdev->wiphy.frag_threshold = frag_threshold;
3252                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3253                         rdev->wiphy.rts_threshold = rts_threshold;
3254                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3255                         rdev->wiphy.coverage_class = coverage_class;
3256                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3257                         rdev->wiphy.txq_limit = txq_limit;
3258                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3259                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3260                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3261                         rdev->wiphy.txq_quantum = txq_quantum;
3262
3263                 result = rdev_set_wiphy_params(rdev, changed);
3264                 if (result) {
3265                         rdev->wiphy.retry_short = old_retry_short;
3266                         rdev->wiphy.retry_long = old_retry_long;
3267                         rdev->wiphy.frag_threshold = old_frag_threshold;
3268                         rdev->wiphy.rts_threshold = old_rts_threshold;
3269                         rdev->wiphy.coverage_class = old_coverage_class;
3270                         rdev->wiphy.txq_limit = old_txq_limit;
3271                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3272                         rdev->wiphy.txq_quantum = old_txq_quantum;
3273                         return result;
3274                 }
3275         }
3276         return 0;
3277 }
3278
3279 static int nl80211_send_chandef(struct sk_buff *msg,
3280                                 const struct cfg80211_chan_def *chandef)
3281 {
3282         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3283                 return -EINVAL;
3284
3285         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3286                         chandef->chan->center_freq))
3287                 return -ENOBUFS;
3288         switch (chandef->width) {
3289         case NL80211_CHAN_WIDTH_20_NOHT:
3290         case NL80211_CHAN_WIDTH_20:
3291         case NL80211_CHAN_WIDTH_40:
3292                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3293                                 cfg80211_get_chandef_type(chandef)))
3294                         return -ENOBUFS;
3295                 break;
3296         default:
3297                 break;
3298         }
3299         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3300                 return -ENOBUFS;
3301         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3302                 return -ENOBUFS;
3303         if (chandef->center_freq2 &&
3304             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3305                 return -ENOBUFS;
3306         return 0;
3307 }
3308
3309 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3310                               struct cfg80211_registered_device *rdev,
3311                               struct wireless_dev *wdev,
3312                               enum nl80211_commands cmd)
3313 {
3314         struct net_device *dev = wdev->netdev;
3315         void *hdr;
3316
3317         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3318                 cmd != NL80211_CMD_DEL_INTERFACE &&
3319                 cmd != NL80211_CMD_SET_INTERFACE);
3320
3321         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3322         if (!hdr)
3323                 return -1;
3324
3325         if (dev &&
3326             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3327              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3328                 goto nla_put_failure;
3329
3330         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3331             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3332             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3333                               NL80211_ATTR_PAD) ||
3334             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3335             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3336                         rdev->devlist_generation ^
3337                         (cfg80211_rdev_list_generation << 2)) ||
3338             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3339                 goto nla_put_failure;
3340
3341         if (rdev->ops->get_channel) {
3342                 int ret;
3343                 struct cfg80211_chan_def chandef = {};
3344
3345                 ret = rdev_get_channel(rdev, wdev, &chandef);
3346                 if (ret == 0) {
3347                         if (nl80211_send_chandef(msg, &chandef))
3348                                 goto nla_put_failure;
3349                 }
3350         }
3351
3352         if (rdev->ops->get_tx_power) {
3353                 int dbm, ret;
3354
3355                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3356                 if (ret == 0 &&
3357                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3358                                 DBM_TO_MBM(dbm)))
3359                         goto nla_put_failure;
3360         }
3361
3362         wdev_lock(wdev);
3363         switch (wdev->iftype) {
3364         case NL80211_IFTYPE_AP:
3365                 if (wdev->ssid_len &&
3366                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3367                         goto nla_put_failure_locked;
3368                 break;
3369         case NL80211_IFTYPE_STATION:
3370         case NL80211_IFTYPE_P2P_CLIENT:
3371         case NL80211_IFTYPE_ADHOC: {
3372                 const u8 *ssid_ie;
3373                 if (!wdev->current_bss)
3374                         break;
3375                 rcu_read_lock();
3376                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3377                                                WLAN_EID_SSID);
3378                 if (ssid_ie &&
3379                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3380                         goto nla_put_failure_rcu_locked;
3381                 rcu_read_unlock();
3382                 break;
3383                 }
3384         default:
3385                 /* nothing */
3386                 break;
3387         }
3388         wdev_unlock(wdev);
3389
3390         if (rdev->ops->get_txq_stats) {
3391                 struct cfg80211_txq_stats txqstats = {};
3392                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3393
3394                 if (ret == 0 &&
3395                     !nl80211_put_txq_stats(msg, &txqstats,
3396                                            NL80211_ATTR_TXQ_STATS))
3397                         goto nla_put_failure;
3398         }
3399
3400         genlmsg_end(msg, hdr);
3401         return 0;
3402
3403  nla_put_failure_rcu_locked:
3404         rcu_read_unlock();
3405  nla_put_failure_locked:
3406         wdev_unlock(wdev);
3407  nla_put_failure:
3408         genlmsg_cancel(msg, hdr);
3409         return -EMSGSIZE;
3410 }
3411
3412 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3413 {
3414         int wp_idx = 0;
3415         int if_idx = 0;
3416         int wp_start = cb->args[0];
3417         int if_start = cb->args[1];
3418         int filter_wiphy = -1;
3419         struct cfg80211_registered_device *rdev;
3420         struct wireless_dev *wdev;
3421         int ret;
3422
3423         rtnl_lock();
3424         if (!cb->args[2]) {
3425                 struct nl80211_dump_wiphy_state state = {
3426                         .filter_wiphy = -1,
3427                 };
3428
3429                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3430                 if (ret)
3431                         goto out_unlock;
3432
3433                 filter_wiphy = state.filter_wiphy;
3434
3435                 /*
3436                  * if filtering, set cb->args[2] to +1 since 0 is the default
3437                  * value needed to determine that parsing is necessary.
3438                  */
3439                 if (filter_wiphy >= 0)
3440                         cb->args[2] = filter_wiphy + 1;
3441                 else
3442                         cb->args[2] = -1;
3443         } else if (cb->args[2] > 0) {
3444                 filter_wiphy = cb->args[2] - 1;
3445         }
3446
3447         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3448                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3449                         continue;
3450                 if (wp_idx < wp_start) {
3451                         wp_idx++;
3452                         continue;
3453                 }
3454
3455                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3456                         continue;
3457
3458                 if_idx = 0;
3459
3460                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3461                         if (if_idx < if_start) {
3462                                 if_idx++;
3463                                 continue;
3464                         }
3465                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3466                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3467                                                rdev, wdev,
3468                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3469                                 goto out;
3470                         }
3471                         if_idx++;
3472                 }
3473
3474                 wp_idx++;
3475         }
3476  out:
3477         cb->args[0] = wp_idx;
3478         cb->args[1] = if_idx;
3479
3480         ret = skb->len;
3481  out_unlock:
3482         rtnl_unlock();
3483
3484         return ret;
3485 }
3486
3487 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3488 {
3489         struct sk_buff *msg;
3490         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3491         struct wireless_dev *wdev = info->user_ptr[1];
3492
3493         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3494         if (!msg)
3495                 return -ENOMEM;
3496
3497         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3498                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3499                 nlmsg_free(msg);
3500                 return -ENOBUFS;
3501         }
3502
3503         return genlmsg_reply(msg, info);
3504 }
3505
3506 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3507         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3508         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3509         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3510         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3511         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3512         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3513 };
3514
3515 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3516 {
3517         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3518         int flag;
3519
3520         *mntrflags = 0;
3521
3522         if (!nla)
3523                 return -EINVAL;
3524
3525         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3526                 return -EINVAL;
3527
3528         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3529                 if (flags[flag])
3530                         *mntrflags |= (1<<flag);
3531
3532         *mntrflags |= MONITOR_FLAG_CHANGED;
3533
3534         return 0;
3535 }
3536
3537 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3538                                      enum nl80211_iftype type,
3539                                      struct genl_info *info,
3540                                      struct vif_params *params)
3541 {
3542         bool change = false;
3543         int err;
3544
3545         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3546                 if (type != NL80211_IFTYPE_MONITOR)
3547                         return -EINVAL;
3548
3549                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3550                                           &params->flags);
3551                 if (err)
3552                         return err;
3553
3554                 change = true;
3555         }
3556
3557         if (params->flags & MONITOR_FLAG_ACTIVE &&
3558             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3559                 return -EOPNOTSUPP;
3560
3561         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3562                 const u8 *mumimo_groups;
3563                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3564
3565                 if (type != NL80211_IFTYPE_MONITOR)
3566                         return -EINVAL;
3567
3568                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3569                         return -EOPNOTSUPP;
3570
3571                 mumimo_groups =
3572                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3573
3574                 /* bits 0 and 63 are reserved and must be zero */
3575                 if ((mumimo_groups[0] & BIT(0)) ||
3576                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3577                         return -EINVAL;
3578
3579                 params->vht_mumimo_groups = mumimo_groups;
3580                 change = true;
3581         }
3582
3583         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3584                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3585
3586                 if (type != NL80211_IFTYPE_MONITOR)
3587                         return -EINVAL;
3588
3589                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3590                         return -EOPNOTSUPP;
3591
3592                 params->vht_mumimo_follow_addr =
3593                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3594                 change = true;
3595         }
3596
3597         return change ? 1 : 0;
3598 }
3599
3600 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3601                                struct net_device *netdev, u8 use_4addr,
3602                                enum nl80211_iftype iftype)
3603 {
3604         if (!use_4addr) {
3605                 if (netdev && netif_is_bridge_port(netdev))
3606                         return -EBUSY;
3607                 return 0;
3608         }
3609
3610         switch (iftype) {
3611         case NL80211_IFTYPE_AP_VLAN:
3612                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3613                         return 0;
3614                 break;
3615         case NL80211_IFTYPE_STATION:
3616                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3617                         return 0;
3618                 break;
3619         default:
3620                 break;
3621         }
3622
3623         return -EOPNOTSUPP;
3624 }
3625
3626 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3627 {
3628         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3629         struct vif_params params;
3630         int err;
3631         enum nl80211_iftype otype, ntype;
3632         struct net_device *dev = info->user_ptr[1];
3633         bool change = false;
3634
3635         memset(&params, 0, sizeof(params));
3636
3637         otype = ntype = dev->ieee80211_ptr->iftype;
3638
3639         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3640                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3641                 if (otype != ntype)
3642                         change = true;
3643         }
3644
3645         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3646                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3647
3648                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3649                         return -EINVAL;
3650                 if (netif_running(dev))
3651                         return -EBUSY;
3652
3653                 wdev_lock(wdev);
3654                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3655                              IEEE80211_MAX_MESH_ID_LEN);
3656                 wdev->mesh_id_up_len =
3657                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3658                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3659                        wdev->mesh_id_up_len);
3660                 wdev_unlock(wdev);
3661         }
3662
3663         if (info->attrs[NL80211_ATTR_4ADDR]) {
3664                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3665                 change = true;
3666                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3667                 if (err)
3668                         return err;
3669         } else {
3670                 params.use_4addr = -1;
3671         }
3672
3673         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3674         if (err < 0)
3675                 return err;
3676         if (err > 0)
3677                 change = true;
3678
3679         if (change)
3680                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3681         else
3682                 err = 0;
3683
3684         if (!err && params.use_4addr != -1)
3685                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3686
3687         if (change && !err) {
3688                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3689
3690                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3691         }
3692
3693         return err;
3694 }
3695
3696 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3697 {
3698         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3699         struct vif_params params;
3700         struct wireless_dev *wdev;
3701         struct sk_buff *msg;
3702         int err;
3703         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3704
3705         /* to avoid failing a new interface creation due to pending removal */
3706         cfg80211_destroy_ifaces(rdev);
3707
3708         memset(&params, 0, sizeof(params));
3709
3710         if (!info->attrs[NL80211_ATTR_IFNAME])
3711                 return -EINVAL;
3712
3713         if (info->attrs[NL80211_ATTR_IFTYPE])
3714                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3715
3716         if (!rdev->ops->add_virtual_intf)
3717                 return -EOPNOTSUPP;
3718
3719         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3720              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3721             info->attrs[NL80211_ATTR_MAC]) {
3722                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3723                            ETH_ALEN);
3724                 if (!is_valid_ether_addr(params.macaddr))
3725                         return -EADDRNOTAVAIL;
3726         }
3727
3728         if (info->attrs[NL80211_ATTR_4ADDR]) {
3729                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3730                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3731                 if (err)
3732                         return err;
3733         }
3734
3735         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3736                 return -EOPNOTSUPP;
3737
3738         err = nl80211_parse_mon_options(rdev, type, info, &params);
3739         if (err < 0)
3740                 return err;
3741
3742         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3743         if (!msg)
3744                 return -ENOMEM;
3745
3746         wdev = rdev_add_virtual_intf(rdev,
3747                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3748                                 NET_NAME_USER, type, &params);
3749         if (WARN_ON(!wdev)) {
3750                 nlmsg_free(msg);
3751                 return -EPROTO;
3752         } else if (IS_ERR(wdev)) {
3753                 nlmsg_free(msg);
3754                 return PTR_ERR(wdev);
3755         }
3756
3757         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3758                 wdev->owner_nlportid = info->snd_portid;
3759
3760         switch (type) {
3761         case NL80211_IFTYPE_MESH_POINT:
3762                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3763                         break;
3764                 wdev_lock(wdev);
3765                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3766                              IEEE80211_MAX_MESH_ID_LEN);
3767                 wdev->mesh_id_up_len =
3768                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3769                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3770                        wdev->mesh_id_up_len);
3771                 wdev_unlock(wdev);
3772                 break;
3773         case NL80211_IFTYPE_NAN:
3774         case NL80211_IFTYPE_P2P_DEVICE:
3775                 /*
3776                  * P2P Device and NAN do not have a netdev, so don't go
3777                  * through the netdev notifier and must be added here
3778                  */
3779                 cfg80211_init_wdev(rdev, wdev);
3780                 break;
3781         default:
3782                 break;
3783         }
3784
3785         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3786                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3787                 nlmsg_free(msg);
3788                 return -ENOBUFS;
3789         }
3790
3791         return genlmsg_reply(msg, info);
3792 }
3793
3794 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3795 {
3796         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3797         struct wireless_dev *wdev = info->user_ptr[1];
3798
3799         if (!rdev->ops->del_virtual_intf)
3800                 return -EOPNOTSUPP;
3801
3802         /*
3803          * If we remove a wireless device without a netdev then clear
3804          * user_ptr[1] so that nl80211_post_doit won't dereference it
3805          * to check if it needs to do dev_put(). Otherwise it crashes
3806          * since the wdev has been freed, unlike with a netdev where
3807          * we need the dev_put() for the netdev to really be freed.
3808          */
3809         if (!wdev->netdev)
3810                 info->user_ptr[1] = NULL;
3811
3812         return rdev_del_virtual_intf(rdev, wdev);
3813 }
3814
3815 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3816 {
3817         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3818         struct net_device *dev = info->user_ptr[1];
3819         u16 noack_map;
3820
3821         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3822                 return -EINVAL;
3823
3824         if (!rdev->ops->set_noack_map)
3825                 return -EOPNOTSUPP;
3826
3827         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3828
3829         return rdev_set_noack_map(rdev, dev, noack_map);
3830 }
3831
3832 struct get_key_cookie {
3833         struct sk_buff *msg;
3834         int error;
3835         int idx;
3836 };
3837
3838 static void get_key_callback(void *c, struct key_params *params)
3839 {
3840         struct nlattr *key;
3841         struct get_key_cookie *cookie = c;
3842
3843         if ((params->key &&
3844              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3845                      params->key_len, params->key)) ||
3846             (params->seq &&
3847              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3848                      params->seq_len, params->seq)) ||
3849             (params->cipher &&
3850              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3851                          params->cipher)))
3852                 goto nla_put_failure;
3853
3854         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3855         if (!key)
3856                 goto nla_put_failure;
3857
3858         if ((params->key &&
3859              nla_put(cookie->msg, NL80211_KEY_DATA,
3860                      params->key_len, params->key)) ||
3861             (params->seq &&
3862              nla_put(cookie->msg, NL80211_KEY_SEQ,
3863                      params->seq_len, params->seq)) ||
3864             (params->cipher &&
3865              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3866                          params->cipher)))
3867                 goto nla_put_failure;
3868
3869         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3870                 goto nla_put_failure;
3871
3872         nla_nest_end(cookie->msg, key);
3873
3874         return;
3875  nla_put_failure:
3876         cookie->error = 1;
3877 }
3878
3879 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3880 {
3881         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3882         int err;
3883         struct net_device *dev = info->user_ptr[1];
3884         u8 key_idx = 0;
3885         const u8 *mac_addr = NULL;
3886         bool pairwise;
3887         struct get_key_cookie cookie = {
3888                 .error = 0,
3889         };
3890         void *hdr;
3891         struct sk_buff *msg;
3892
3893         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
3894                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3895                 if (key_idx > 5 &&
3896                     !wiphy_ext_feature_isset(
3897                             &rdev->wiphy,
3898                             NL80211_EXT_FEATURE_BEACON_PROTECTION))
3899                         return -EINVAL;
3900         }
3901
3902         if (info->attrs[NL80211_ATTR_MAC])
3903                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3904
3905         pairwise = !!mac_addr;
3906         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3907                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3908
3909                 if (kt != NL80211_KEYTYPE_GROUP &&
3910                     kt != NL80211_KEYTYPE_PAIRWISE)
3911                         return -EINVAL;
3912                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3913         }
3914
3915         if (!rdev->ops->get_key)
3916                 return -EOPNOTSUPP;
3917
3918         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3919                 return -ENOENT;
3920
3921         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3922         if (!msg)
3923                 return -ENOMEM;
3924
3925         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3926                              NL80211_CMD_NEW_KEY);
3927         if (!hdr)
3928                 goto nla_put_failure;
3929
3930         cookie.msg = msg;
3931         cookie.idx = key_idx;
3932
3933         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3934             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3935                 goto nla_put_failure;
3936         if (mac_addr &&
3937             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3938                 goto nla_put_failure;
3939
3940         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3941                            get_key_callback);
3942
3943         if (err)
3944                 goto free_msg;
3945
3946         if (cookie.error)
3947                 goto nla_put_failure;
3948
3949         genlmsg_end(msg, hdr);
3950         return genlmsg_reply(msg, info);
3951
3952  nla_put_failure:
3953         err = -ENOBUFS;
3954  free_msg:
3955         nlmsg_free(msg);
3956         return err;
3957 }
3958
3959 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3960 {
3961         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3962         struct key_parse key;
3963         int err;
3964         struct net_device *dev = info->user_ptr[1];
3965
3966         err = nl80211_parse_key(info, &key);
3967         if (err)
3968                 return err;
3969
3970         if (key.idx < 0)
3971                 return -EINVAL;
3972
3973         /* Only support setting default key and
3974          * Extended Key ID action NL80211_KEY_SET_TX.
3975          */
3976         if (!key.def && !key.defmgmt && !key.defbeacon &&
3977             !(key.p.mode == NL80211_KEY_SET_TX))
3978                 return -EINVAL;
3979
3980         wdev_lock(dev->ieee80211_ptr);
3981
3982         if (key.def) {
3983                 if (!rdev->ops->set_default_key) {
3984                         err = -EOPNOTSUPP;
3985                         goto out;
3986                 }
3987
3988                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3989                 if (err)
3990                         goto out;
3991
3992                 err = rdev_set_default_key(rdev, dev, key.idx,
3993                                                  key.def_uni, key.def_multi);
3994
3995                 if (err)
3996                         goto out;
3997
3998 #ifdef CONFIG_CFG80211_WEXT
3999                 dev->ieee80211_ptr->wext.default_key = key.idx;
4000 #endif
4001         } else if (key.defmgmt) {
4002                 if (key.def_uni || !key.def_multi) {
4003                         err = -EINVAL;
4004                         goto out;
4005                 }
4006
4007                 if (!rdev->ops->set_default_mgmt_key) {
4008                         err = -EOPNOTSUPP;
4009                         goto out;
4010                 }
4011
4012                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4013                 if (err)
4014                         goto out;
4015
4016                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4017                 if (err)
4018                         goto out;
4019
4020 #ifdef CONFIG_CFG80211_WEXT
4021                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4022 #endif
4023         } else if (key.defbeacon) {
4024                 if (key.def_uni || !key.def_multi) {
4025                         err = -EINVAL;
4026                         goto out;
4027                 }
4028
4029                 if (!rdev->ops->set_default_beacon_key) {
4030                         err = -EOPNOTSUPP;
4031                         goto out;
4032                 }
4033
4034                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4035                 if (err)
4036                         goto out;
4037
4038                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4039                 if (err)
4040                         goto out;
4041         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4042                    wiphy_ext_feature_isset(&rdev->wiphy,
4043                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4044                 u8 *mac_addr = NULL;
4045
4046                 if (info->attrs[NL80211_ATTR_MAC])
4047                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4048
4049                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4050                         err = -EINVAL;
4051                         goto out;
4052                 }
4053
4054                 err = rdev_add_key(rdev, dev, key.idx,
4055                                    NL80211_KEYTYPE_PAIRWISE,
4056                                    mac_addr, &key.p);
4057         } else {
4058                 err = -EINVAL;
4059         }
4060  out:
4061         wdev_unlock(dev->ieee80211_ptr);
4062
4063         return err;
4064 }
4065
4066 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4067 {
4068         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4069         int err;
4070         struct net_device *dev = info->user_ptr[1];
4071         struct key_parse key;
4072         const u8 *mac_addr = NULL;
4073
4074         err = nl80211_parse_key(info, &key);
4075         if (err)
4076                 return err;
4077
4078         if (!key.p.key) {
4079                 GENL_SET_ERR_MSG(info, "no key");
4080                 return -EINVAL;
4081         }
4082
4083         if (info->attrs[NL80211_ATTR_MAC])
4084                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4085
4086         if (key.type == -1) {
4087                 if (mac_addr)
4088                         key.type = NL80211_KEYTYPE_PAIRWISE;
4089                 else
4090                         key.type = NL80211_KEYTYPE_GROUP;
4091         }
4092
4093         /* for now */
4094         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4095             key.type != NL80211_KEYTYPE_GROUP) {
4096                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4097                 return -EINVAL;
4098         }
4099
4100         if (key.type == NL80211_KEYTYPE_GROUP &&
4101             info->attrs[NL80211_ATTR_VLAN_ID])
4102                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4103
4104         if (!rdev->ops->add_key)
4105                 return -EOPNOTSUPP;
4106
4107         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4108                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4109                                            mac_addr)) {
4110                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4111                 return -EINVAL;
4112         }
4113
4114         wdev_lock(dev->ieee80211_ptr);
4115         err = nl80211_key_allowed(dev->ieee80211_ptr);
4116         if (err)
4117                 GENL_SET_ERR_MSG(info, "key not allowed");
4118         if (!err) {
4119                 err = rdev_add_key(rdev, dev, key.idx,
4120                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4121                                     mac_addr, &key.p);
4122                 if (err)
4123                         GENL_SET_ERR_MSG(info, "key addition failed");
4124         }
4125         wdev_unlock(dev->ieee80211_ptr);
4126
4127         return err;
4128 }
4129
4130 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4131 {
4132         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4133         int err;
4134         struct net_device *dev = info->user_ptr[1];
4135         u8 *mac_addr = NULL;
4136         struct key_parse key;
4137
4138         err = nl80211_parse_key(info, &key);
4139         if (err)
4140                 return err;
4141
4142         if (info->attrs[NL80211_ATTR_MAC])
4143                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4144
4145         if (key.type == -1) {
4146                 if (mac_addr)
4147                         key.type = NL80211_KEYTYPE_PAIRWISE;
4148                 else
4149                         key.type = NL80211_KEYTYPE_GROUP;
4150         }
4151
4152         /* for now */
4153         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4154             key.type != NL80211_KEYTYPE_GROUP)
4155                 return -EINVAL;
4156
4157         if (!rdev->ops->del_key)
4158                 return -EOPNOTSUPP;
4159
4160         wdev_lock(dev->ieee80211_ptr);
4161         err = nl80211_key_allowed(dev->ieee80211_ptr);
4162
4163         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4164             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4165                 err = -ENOENT;
4166
4167         if (!err)
4168                 err = rdev_del_key(rdev, dev, key.idx,
4169                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4170                                    mac_addr);
4171
4172 #ifdef CONFIG_CFG80211_WEXT
4173         if (!err) {
4174                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4175                         dev->ieee80211_ptr->wext.default_key = -1;
4176                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4177                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4178         }
4179 #endif
4180         wdev_unlock(dev->ieee80211_ptr);
4181
4182         return err;
4183 }
4184
4185 /* This function returns an error or the number of nested attributes */
4186 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4187 {
4188         struct nlattr *attr;
4189         int n_entries = 0, tmp;
4190
4191         nla_for_each_nested(attr, nl_attr, tmp) {
4192                 if (nla_len(attr) != ETH_ALEN)
4193                         return -EINVAL;
4194
4195                 n_entries++;
4196         }
4197
4198         return n_entries;
4199 }
4200
4201 /*
4202  * This function parses ACL information and allocates memory for ACL data.
4203  * On successful return, the calling function is responsible to free the
4204  * ACL buffer returned by this function.
4205  */
4206 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4207                                                 struct genl_info *info)
4208 {
4209         enum nl80211_acl_policy acl_policy;
4210         struct nlattr *attr;
4211         struct cfg80211_acl_data *acl;
4212         int i = 0, n_entries, tmp;
4213
4214         if (!wiphy->max_acl_mac_addrs)
4215                 return ERR_PTR(-EOPNOTSUPP);
4216
4217         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4218                 return ERR_PTR(-EINVAL);
4219
4220         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4221         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4222             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4223                 return ERR_PTR(-EINVAL);
4224
4225         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4226                 return ERR_PTR(-EINVAL);
4227
4228         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4229         if (n_entries < 0)
4230                 return ERR_PTR(n_entries);
4231
4232         if (n_entries > wiphy->max_acl_mac_addrs)
4233                 return ERR_PTR(-ENOTSUPP);
4234
4235         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4236         if (!acl)
4237                 return ERR_PTR(-ENOMEM);
4238
4239         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4240                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4241                 i++;
4242         }
4243
4244         acl->n_acl_entries = n_entries;
4245         acl->acl_policy = acl_policy;
4246
4247         return acl;
4248 }
4249
4250 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4251 {
4252         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4253         struct net_device *dev = info->user_ptr[1];
4254         struct cfg80211_acl_data *acl;
4255         int err;
4256
4257         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4258             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4259                 return -EOPNOTSUPP;
4260
4261         if (!dev->ieee80211_ptr->beacon_interval)
4262                 return -EINVAL;
4263
4264         acl = parse_acl_data(&rdev->wiphy, info);
4265         if (IS_ERR(acl))
4266                 return PTR_ERR(acl);
4267
4268         err = rdev_set_mac_acl(rdev, dev, acl);
4269
4270         kfree(acl);
4271
4272         return err;
4273 }
4274
4275 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4276                            u8 *rates, u8 rates_len)
4277 {
4278         u8 i;
4279         u32 mask = 0;
4280
4281         for (i = 0; i < rates_len; i++) {
4282                 int rate = (rates[i] & 0x7f) * 5;
4283                 int ridx;
4284
4285                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4286                         struct ieee80211_rate *srate =
4287                                 &sband->bitrates[ridx];
4288                         if (rate == srate->bitrate) {
4289                                 mask |= 1 << ridx;
4290                                 break;
4291                         }
4292                 }
4293                 if (ridx == sband->n_bitrates)
4294                         return 0; /* rate not found */
4295         }
4296
4297         return mask;
4298 }
4299
4300 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4301                                u8 *rates, u8 rates_len,
4302                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4303 {
4304         u8 i;
4305
4306         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4307
4308         for (i = 0; i < rates_len; i++) {
4309                 int ridx, rbit;
4310
4311                 ridx = rates[i] / 8;
4312                 rbit = BIT(rates[i] % 8);
4313
4314                 /* check validity */
4315                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4316                         return false;
4317
4318                 /* check availability */
4319                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4320                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4321                         mcs[ridx] |= rbit;
4322                 else
4323                         return false;
4324         }
4325
4326         return true;
4327 }
4328
4329 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4330 {
4331         u16 mcs_mask = 0;
4332
4333         switch (vht_mcs_map) {
4334         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4335                 break;
4336         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4337                 mcs_mask = 0x00FF;
4338                 break;
4339         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4340                 mcs_mask = 0x01FF;
4341                 break;
4342         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4343                 mcs_mask = 0x03FF;
4344                 break;
4345         default:
4346                 break;
4347         }
4348
4349         return mcs_mask;
4350 }
4351
4352 static void vht_build_mcs_mask(u16 vht_mcs_map,
4353                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4354 {
4355         u8 nss;
4356
4357         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4358                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4359                 vht_mcs_map >>= 2;
4360         }
4361 }
4362
4363 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4364                              struct nl80211_txrate_vht *txrate,
4365                              u16 mcs[NL80211_VHT_NSS_MAX])
4366 {
4367         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4368         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4369         u8 i;
4370
4371         if (!sband->vht_cap.vht_supported)
4372                 return false;
4373
4374         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4375
4376         /* Build vht_mcs_mask from VHT capabilities */
4377         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4378
4379         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4380                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4381                         mcs[i] = txrate->mcs[i];
4382                 else
4383                         return false;
4384         }
4385
4386         return true;
4387 }
4388
4389 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4390         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4391                                     .len = NL80211_MAX_SUPP_RATES },
4392         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4393                                 .len = NL80211_MAX_SUPP_HT_RATES },
4394         [NL80211_TXRATE_VHT] = {
4395                 .type = NLA_EXACT_LEN_WARN,
4396                 .len = sizeof(struct nl80211_txrate_vht),
4397         },
4398         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4399 };
4400
4401 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4402                                          struct cfg80211_bitrate_mask *mask)
4403 {
4404         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4405         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4406         int rem, i;
4407         struct nlattr *tx_rates;
4408         struct ieee80211_supported_band *sband;
4409         u16 vht_tx_mcs_map;
4410
4411         memset(mask, 0, sizeof(*mask));
4412         /* Default to all rates enabled */
4413         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4414                 sband = rdev->wiphy.bands[i];
4415
4416                 if (!sband)
4417                         continue;
4418
4419                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4420                 memcpy(mask->control[i].ht_mcs,
4421                        sband->ht_cap.mcs.rx_mask,
4422                        sizeof(mask->control[i].ht_mcs));
4423
4424                 if (!sband->vht_cap.vht_supported)
4425                         continue;
4426
4427                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4428                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4429         }
4430
4431         /* if no rates are given set it back to the defaults */
4432         if (!info->attrs[NL80211_ATTR_TX_RATES])
4433                 goto out;
4434
4435         /* The nested attribute uses enum nl80211_band as the index. This maps
4436          * directly to the enum nl80211_band values used in cfg80211.
4437          */
4438         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4439         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4440                 enum nl80211_band band = nla_type(tx_rates);
4441                 int err;
4442
4443                 if (band < 0 || band >= NUM_NL80211_BANDS)
4444                         return -EINVAL;
4445                 sband = rdev->wiphy.bands[band];
4446                 if (sband == NULL)
4447                         return -EINVAL;
4448                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4449                                                   tx_rates,
4450                                                   nl80211_txattr_policy,
4451                                                   info->extack);
4452                 if (err)
4453                         return err;
4454                 if (tb[NL80211_TXRATE_LEGACY]) {
4455                         mask->control[band].legacy = rateset_to_mask(
4456                                 sband,
4457                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4458                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4459                         if ((mask->control[band].legacy == 0) &&
4460                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4461                                 return -EINVAL;
4462                 }
4463                 if (tb[NL80211_TXRATE_HT]) {
4464                         if (!ht_rateset_to_mask(
4465                                         sband,
4466                                         nla_data(tb[NL80211_TXRATE_HT]),
4467                                         nla_len(tb[NL80211_TXRATE_HT]),
4468                                         mask->control[band].ht_mcs))
4469                                 return -EINVAL;
4470                 }
4471                 if (tb[NL80211_TXRATE_VHT]) {
4472                         if (!vht_set_mcs_mask(
4473                                         sband,
4474                                         nla_data(tb[NL80211_TXRATE_VHT]),
4475                                         mask->control[band].vht_mcs))
4476                                 return -EINVAL;
4477                 }
4478                 if (tb[NL80211_TXRATE_GI]) {
4479                         mask->control[band].gi =
4480                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4481                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4482                                 return -EINVAL;
4483                 }
4484
4485                 if (mask->control[band].legacy == 0) {
4486                         /* don't allow empty legacy rates if HT or VHT
4487                          * are not even supported.
4488                          */
4489                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4490                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4491                                 return -EINVAL;
4492
4493                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4494                                 if (mask->control[band].ht_mcs[i])
4495                                         goto out;
4496
4497                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4498                                 if (mask->control[band].vht_mcs[i])
4499                                         goto out;
4500
4501                         /* legacy and mcs rates may not be both empty */
4502                         return -EINVAL;
4503                 }
4504         }
4505
4506 out:
4507         return 0;
4508 }
4509
4510 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4511                                    enum nl80211_band band,
4512                                    struct cfg80211_bitrate_mask *beacon_rate)
4513 {
4514         u32 count_ht, count_vht, i;
4515         u32 rate = beacon_rate->control[band].legacy;
4516
4517         /* Allow only one rate */
4518         if (hweight32(rate) > 1)
4519                 return -EINVAL;
4520
4521         count_ht = 0;
4522         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4523                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4524                         return -EINVAL;
4525                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4526                         count_ht++;
4527                         if (count_ht > 1)
4528                                 return -EINVAL;
4529                 }
4530                 if (count_ht && rate)
4531                         return -EINVAL;
4532         }
4533
4534         count_vht = 0;
4535         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4536                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4537                         return -EINVAL;
4538                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4539                         count_vht++;
4540                         if (count_vht > 1)
4541                                 return -EINVAL;
4542                 }
4543                 if (count_vht && rate)
4544                         return -EINVAL;
4545         }
4546
4547         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4548                 return -EINVAL;
4549
4550         if (rate &&
4551             !wiphy_ext_feature_isset(&rdev->wiphy,
4552                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4553                 return -EINVAL;
4554         if (count_ht &&
4555             !wiphy_ext_feature_isset(&rdev->wiphy,
4556                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4557                 return -EINVAL;
4558         if (count_vht &&
4559             !wiphy_ext_feature_isset(&rdev->wiphy,
4560                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4561                 return -EINVAL;
4562
4563         return 0;
4564 }
4565
4566 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4567                                 struct nlattr *attrs[],
4568                                 struct cfg80211_beacon_data *bcn)
4569 {
4570         bool haveinfo = false;
4571         int err;
4572
4573         memset(bcn, 0, sizeof(*bcn));
4574
4575         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4576                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4577                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4578                 if (!bcn->head_len)
4579                         return -EINVAL;
4580                 haveinfo = true;
4581         }
4582
4583         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4584                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4585                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4586                 haveinfo = true;
4587         }
4588
4589         if (!haveinfo)
4590                 return -EINVAL;
4591
4592         if (attrs[NL80211_ATTR_IE]) {
4593                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4594                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4595         }
4596
4597         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4598                 bcn->proberesp_ies =
4599                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4600                 bcn->proberesp_ies_len =
4601                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4602         }
4603
4604         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4605                 bcn->assocresp_ies =
4606                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4607                 bcn->assocresp_ies_len =
4608                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4609         }
4610
4611         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4612                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4613                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4614         }
4615
4616         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4617                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4618
4619                 err = nla_parse_nested_deprecated(tb,
4620                                                   NL80211_FTM_RESP_ATTR_MAX,
4621                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4622                                                   NULL, NULL);
4623                 if (err)
4624                         return err;
4625
4626                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4627                     wiphy_ext_feature_isset(&rdev->wiphy,
4628                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4629                         bcn->ftm_responder = 1;
4630                 else
4631                         return -EOPNOTSUPP;
4632
4633                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4634                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4635                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4636                 }
4637
4638                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4639                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4640                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4641                 }
4642         } else {
4643                 bcn->ftm_responder = -1;
4644         }
4645
4646         return 0;
4647 }
4648
4649 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4650                                     struct ieee80211_he_obss_pd *he_obss_pd)
4651 {
4652         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4653         int err;
4654
4655         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4656                                he_obss_pd_policy, NULL);
4657         if (err)
4658                 return err;
4659
4660         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4661             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4662                 return -EINVAL;
4663
4664         he_obss_pd->min_offset =
4665                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4666         he_obss_pd->max_offset =
4667                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4668
4669         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4670                 return -EINVAL;
4671
4672         he_obss_pd->enable = true;
4673
4674         return 0;
4675 }
4676
4677 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4678                                       struct cfg80211_he_bss_color *he_bss_color)
4679 {
4680         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4681         int err;
4682
4683         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4684                                he_bss_color_policy, NULL);
4685         if (err)
4686                 return err;
4687
4688         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4689                 return -EINVAL;
4690
4691         he_bss_color->color =
4692                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4693         he_bss_color->disabled =
4694                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4695         he_bss_color->partial =
4696                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4697
4698         return 0;
4699 }
4700
4701 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4702                                             const u8 *rates)
4703 {
4704         int i;
4705
4706         if (!rates)
4707                 return;
4708
4709         for (i = 0; i < rates[1]; i++) {
4710                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4711                         params->ht_required = true;
4712                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4713                         params->vht_required = true;
4714         }
4715 }
4716
4717 /*
4718  * Since the nl80211 API didn't include, from the beginning, attributes about
4719  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4720  * benefit of drivers that rebuild IEs in the firmware.
4721  */
4722 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4723 {
4724         const struct cfg80211_beacon_data *bcn = &params->beacon;
4725         size_t ies_len = bcn->tail_len;
4726         const u8 *ies = bcn->tail;
4727         const u8 *rates;
4728         const u8 *cap;
4729
4730         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4731         nl80211_check_ap_rate_selectors(params, rates);
4732
4733         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4734         nl80211_check_ap_rate_selectors(params, rates);
4735
4736         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4737         if (cap && cap[1] >= sizeof(*params->ht_cap))
4738                 params->ht_cap = (void *)(cap + 2);
4739         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4740         if (cap && cap[1] >= sizeof(*params->vht_cap))
4741                 params->vht_cap = (void *)(cap + 2);
4742         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4743         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4744                 params->he_cap = (void *)(cap + 3);
4745 }
4746
4747 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4748                                    struct cfg80211_ap_settings *params)
4749 {
4750         struct wireless_dev *wdev;
4751         bool ret = false;
4752
4753         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4754                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4755                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4756                         continue;
4757
4758                 if (!wdev->preset_chandef.chan)
4759                         continue;
4760
4761                 params->chandef = wdev->preset_chandef;
4762                 ret = true;
4763                 break;
4764         }
4765
4766         return ret;
4767 }
4768
4769 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4770                                     enum nl80211_auth_type auth_type,
4771                                     enum nl80211_commands cmd)
4772 {
4773         if (auth_type > NL80211_AUTHTYPE_MAX)
4774                 return false;
4775
4776         switch (cmd) {
4777         case NL80211_CMD_AUTHENTICATE:
4778                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4779                     auth_type == NL80211_AUTHTYPE_SAE)
4780                         return false;
4781                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4782                                              NL80211_EXT_FEATURE_FILS_STA) &&
4783                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4784                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4785                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4786                         return false;
4787                 return true;
4788         case NL80211_CMD_CONNECT:
4789                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4790                     !wiphy_ext_feature_isset(&rdev->wiphy,
4791                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4792                     auth_type == NL80211_AUTHTYPE_SAE)
4793                         return false;
4794
4795                 /* FILS with SK PFS or PK not supported yet */
4796                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4797                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4798                         return false;
4799                 if (!wiphy_ext_feature_isset(
4800                             &rdev->wiphy,
4801                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4802                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4803                         return false;
4804                 return true;
4805         case NL80211_CMD_START_AP:
4806                 /* SAE not supported yet */
4807                 if (auth_type == NL80211_AUTHTYPE_SAE)
4808                         return false;
4809                 /* FILS not supported yet */
4810                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4811                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4812                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4813                         return false;
4814                 return true;
4815         default:
4816                 return false;
4817         }
4818 }
4819
4820 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4821 {
4822         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4823         struct net_device *dev = info->user_ptr[1];
4824         struct wireless_dev *wdev = dev->ieee80211_ptr;
4825         struct cfg80211_ap_settings params;
4826         int err;
4827
4828         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4829             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4830                 return -EOPNOTSUPP;
4831
4832         if (!rdev->ops->start_ap)
4833                 return -EOPNOTSUPP;
4834
4835         if (wdev->beacon_interval)
4836                 return -EALREADY;
4837
4838         memset(&params, 0, sizeof(params));
4839
4840         /* these are required for START_AP */
4841         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4842             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4843             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4844                 return -EINVAL;
4845
4846         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4847         if (err)
4848                 return err;
4849
4850         params.beacon_interval =
4851                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4852         params.dtim_period =
4853                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4854
4855         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4856                                            params.beacon_interval);
4857         if (err)
4858                 return err;
4859
4860         /*
4861          * In theory, some of these attributes should be required here
4862          * but since they were not used when the command was originally
4863          * added, keep them optional for old user space programs to let
4864          * them continue to work with drivers that do not need the
4865          * additional information -- drivers must check!
4866          */
4867         if (info->attrs[NL80211_ATTR_SSID]) {
4868                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4869                 params.ssid_len =
4870                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4871                 if (params.ssid_len == 0 ||
4872                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4873                         return -EINVAL;
4874         }
4875
4876         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4877                 params.hidden_ssid = nla_get_u32(
4878                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4879
4880         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4881
4882         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4883                 params.auth_type = nla_get_u32(
4884                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4885                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4886                                              NL80211_CMD_START_AP))
4887                         return -EINVAL;
4888         } else
4889                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4890
4891         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4892                                       NL80211_MAX_NR_CIPHER_SUITES);
4893         if (err)
4894                 return err;
4895
4896         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4897                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4898                         return -EOPNOTSUPP;
4899                 params.inactivity_timeout = nla_get_u16(
4900                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4901         }
4902
4903         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4904                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4905                         return -EINVAL;
4906                 params.p2p_ctwindow =
4907                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4908                 if (params.p2p_ctwindow != 0 &&
4909                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4910                         return -EINVAL;
4911         }
4912
4913         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4914                 u8 tmp;
4915
4916                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4917                         return -EINVAL;
4918                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4919                 params.p2p_opp_ps = tmp;
4920                 if (params.p2p_opp_ps != 0 &&
4921                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4922                         return -EINVAL;
4923         }
4924
4925         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4926                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4927                 if (err)
4928                         return err;
4929         } else if (wdev->preset_chandef.chan) {
4930                 params.chandef = wdev->preset_chandef;
4931         } else if (!nl80211_get_ap_channel(rdev, &params))
4932                 return -EINVAL;
4933
4934         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4935                                            wdev->iftype))
4936                 return -EINVAL;
4937
4938         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4939                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4940                 if (err)
4941                         return err;
4942
4943                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4944                                               &params.beacon_rate);
4945                 if (err)
4946                         return err;
4947         }
4948
4949         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4950                 params.smps_mode =
4951                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4952                 switch (params.smps_mode) {
4953                 case NL80211_SMPS_OFF:
4954                         break;
4955                 case NL80211_SMPS_STATIC:
4956                         if (!(rdev->wiphy.features &
4957                               NL80211_FEATURE_STATIC_SMPS))
4958                                 return -EINVAL;
4959                         break;
4960                 case NL80211_SMPS_DYNAMIC:
4961                         if (!(rdev->wiphy.features &
4962                               NL80211_FEATURE_DYNAMIC_SMPS))
4963                                 return -EINVAL;
4964                         break;
4965                 default:
4966                         return -EINVAL;
4967                 }
4968         } else {
4969                 params.smps_mode = NL80211_SMPS_OFF;
4970         }
4971
4972         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4973         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4974                 return -EOPNOTSUPP;
4975
4976         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4977                 params.acl = parse_acl_data(&rdev->wiphy, info);
4978                 if (IS_ERR(params.acl))
4979                         return PTR_ERR(params.acl);
4980         }
4981
4982         params.twt_responder =
4983                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
4984
4985         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
4986                 err = nl80211_parse_he_obss_pd(
4987                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
4988                                         &params.he_obss_pd);
4989                 if (err)
4990                         return err;
4991         }
4992
4993         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
4994                 err = nl80211_parse_he_bss_color(
4995                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
4996                                         &params.he_bss_color);
4997                 if (err)
4998                         return err;
4999         }
5000
5001         nl80211_calculate_ap_params(&params);
5002
5003         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5004                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5005
5006         wdev_lock(wdev);
5007         err = rdev_start_ap(rdev, dev, &params);
5008         if (!err) {
5009                 wdev->preset_chandef = params.chandef;
5010                 wdev->beacon_interval = params.beacon_interval;
5011                 wdev->chandef = params.chandef;
5012                 wdev->ssid_len = params.ssid_len;
5013                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5014
5015                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5016                         wdev->conn_owner_nlportid = info->snd_portid;
5017         }
5018         wdev_unlock(wdev);
5019
5020         kfree(params.acl);
5021
5022         return err;
5023 }
5024
5025 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5026 {
5027         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5028         struct net_device *dev = info->user_ptr[1];
5029         struct wireless_dev *wdev = dev->ieee80211_ptr;
5030         struct cfg80211_beacon_data params;
5031         int err;
5032
5033         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5034             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5035                 return -EOPNOTSUPP;
5036
5037         if (!rdev->ops->change_beacon)
5038                 return -EOPNOTSUPP;
5039
5040         if (!wdev->beacon_interval)
5041                 return -EINVAL;
5042
5043         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5044         if (err)
5045                 return err;
5046
5047         wdev_lock(wdev);
5048         err = rdev_change_beacon(rdev, dev, &params);
5049         wdev_unlock(wdev);
5050
5051         return err;
5052 }
5053
5054 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5055 {
5056         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5057         struct net_device *dev = info->user_ptr[1];
5058
5059         return cfg80211_stop_ap(rdev, dev, false);
5060 }
5061
5062 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5063         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5064         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5065         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5066         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5067         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5068         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5069 };
5070
5071 static int parse_station_flags(struct genl_info *info,
5072                                enum nl80211_iftype iftype,
5073                                struct station_parameters *params)
5074 {
5075         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5076         struct nlattr *nla;
5077         int flag;
5078
5079         /*
5080          * Try parsing the new attribute first so userspace
5081          * can specify both for older kernels.
5082          */
5083         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5084         if (nla) {
5085                 struct nl80211_sta_flag_update *sta_flags;
5086
5087                 sta_flags = nla_data(nla);
5088                 params->sta_flags_mask = sta_flags->mask;
5089                 params->sta_flags_set = sta_flags->set;
5090                 params->sta_flags_set &= params->sta_flags_mask;
5091                 if ((params->sta_flags_mask |
5092                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5093                         return -EINVAL;
5094                 return 0;
5095         }
5096
5097         /* if present, parse the old attribute */
5098
5099         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5100         if (!nla)
5101                 return 0;
5102
5103         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5104                 return -EINVAL;
5105
5106         /*
5107          * Only allow certain flags for interface types so that
5108          * other attributes are silently ignored. Remember that
5109          * this is backward compatibility code with old userspace
5110          * and shouldn't be hit in other cases anyway.
5111          */
5112         switch (iftype) {
5113         case NL80211_IFTYPE_AP:
5114         case NL80211_IFTYPE_AP_VLAN:
5115         case NL80211_IFTYPE_P2P_GO:
5116                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5117                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5118                                          BIT(NL80211_STA_FLAG_WME) |
5119                                          BIT(NL80211_STA_FLAG_MFP);
5120                 break;
5121         case NL80211_IFTYPE_P2P_CLIENT:
5122         case NL80211_IFTYPE_STATION:
5123                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5124                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5125                 break;
5126         case NL80211_IFTYPE_MESH_POINT:
5127                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5128                                          BIT(NL80211_STA_FLAG_MFP) |
5129                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5130                 break;
5131         default:
5132                 return -EINVAL;
5133         }
5134
5135         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5136                 if (flags[flag]) {
5137                         params->sta_flags_set |= (1<<flag);
5138
5139                         /* no longer support new API additions in old API */
5140                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5141                                 return -EINVAL;
5142                 }
5143         }
5144
5145         return 0;
5146 }
5147
5148 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5149 {
5150         struct nlattr *rate;
5151         u32 bitrate;
5152         u16 bitrate_compat;
5153         enum nl80211_rate_info rate_flg;
5154
5155         rate = nla_nest_start_noflag(msg, attr);
5156         if (!rate)
5157                 return false;
5158
5159         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5160         bitrate = cfg80211_calculate_bitrate(info);
5161         /* report 16-bit bitrate only if we can */
5162         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5163         if (bitrate > 0 &&
5164             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5165                 return false;
5166         if (bitrate_compat > 0 &&
5167             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5168                 return false;
5169
5170         switch (info->bw) {
5171         case RATE_INFO_BW_5:
5172                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5173                 break;
5174         case RATE_INFO_BW_10:
5175                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5176                 break;
5177         default:
5178                 WARN_ON(1);
5179                 /* fall through */
5180         case RATE_INFO_BW_20:
5181                 rate_flg = 0;
5182                 break;
5183         case RATE_INFO_BW_40:
5184                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5185                 break;
5186         case RATE_INFO_BW_80:
5187                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5188                 break;
5189         case RATE_INFO_BW_160:
5190                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5191                 break;
5192         case RATE_INFO_BW_HE_RU:
5193                 rate_flg = 0;
5194                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5195         }
5196
5197         if (rate_flg && nla_put_flag(msg, rate_flg))
5198                 return false;
5199
5200         if (info->flags & RATE_INFO_FLAGS_MCS) {
5201                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5202                         return false;
5203                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5204                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5205                         return false;
5206         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5207                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5208                         return false;
5209                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5210                         return false;
5211                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5212                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5213                         return false;
5214         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5215                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5216                         return false;
5217                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5218                         return false;
5219                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5220                         return false;
5221                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5222                         return false;
5223                 if (info->bw == RATE_INFO_BW_HE_RU &&
5224                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5225                                info->he_ru_alloc))
5226                         return false;
5227         }
5228
5229         nla_nest_end(msg, rate);
5230         return true;
5231 }
5232
5233 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5234                                int id)
5235 {
5236         void *attr;
5237         int i = 0;
5238
5239         if (!mask)
5240                 return true;
5241
5242         attr = nla_nest_start_noflag(msg, id);
5243         if (!attr)
5244                 return false;
5245
5246         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5247                 if (!(mask & BIT(i)))
5248                         continue;
5249
5250                 if (nla_put_u8(msg, i, signal[i]))
5251                         return false;
5252         }
5253
5254         nla_nest_end(msg, attr);
5255
5256         return true;
5257 }
5258
5259 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5260                                 u32 seq, int flags,
5261                                 struct cfg80211_registered_device *rdev,
5262                                 struct net_device *dev,
5263                                 const u8 *mac_addr, struct station_info *sinfo)
5264 {
5265         void *hdr;
5266         struct nlattr *sinfoattr, *bss_param;
5267
5268         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5269         if (!hdr) {
5270                 cfg80211_sinfo_release_content(sinfo);
5271                 return -1;
5272         }
5273
5274         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5275             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5276             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5277                 goto nla_put_failure;
5278
5279         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5280         if (!sinfoattr)
5281                 goto nla_put_failure;
5282
5283 #define PUT_SINFO(attr, memb, type) do {                                \
5284         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5285         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5286             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5287                              sinfo->memb))                              \
5288                 goto nla_put_failure;                                   \
5289         } while (0)
5290 #define PUT_SINFO_U64(attr, memb) do {                                  \
5291         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5292             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5293                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5294                 goto nla_put_failure;                                   \
5295         } while (0)
5296
5297         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5298         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5299         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5300
5301         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5302                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5303             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5304                         (u32)sinfo->rx_bytes))
5305                 goto nla_put_failure;
5306
5307         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5308                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5309             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5310                         (u32)sinfo->tx_bytes))
5311                 goto nla_put_failure;
5312
5313         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5314         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5315         PUT_SINFO(LLID, llid, u16);
5316         PUT_SINFO(PLID, plid, u16);
5317         PUT_SINFO(PLINK_STATE, plink_state, u8);
5318         PUT_SINFO_U64(RX_DURATION, rx_duration);
5319         PUT_SINFO_U64(TX_DURATION, tx_duration);
5320
5321         if (wiphy_ext_feature_isset(&rdev->wiphy,
5322                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5323                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5324
5325         switch (rdev->wiphy.signal_type) {
5326         case CFG80211_SIGNAL_TYPE_MBM:
5327                 PUT_SINFO(SIGNAL, signal, u8);
5328                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5329                 break;
5330         default:
5331                 break;
5332         }
5333         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5334                 if (!nl80211_put_signal(msg, sinfo->chains,
5335                                         sinfo->chain_signal,
5336                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5337                         goto nla_put_failure;
5338         }
5339         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5340                 if (!nl80211_put_signal(msg, sinfo->chains,
5341                                         sinfo->chain_signal_avg,
5342                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5343                         goto nla_put_failure;
5344         }
5345         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5346                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5347                                           NL80211_STA_INFO_TX_BITRATE))
5348                         goto nla_put_failure;
5349         }
5350         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5351                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5352                                           NL80211_STA_INFO_RX_BITRATE))
5353                         goto nla_put_failure;
5354         }
5355
5356         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5357         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5358         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5359         PUT_SINFO(TX_FAILED, tx_failed, u32);
5360         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5361         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5362         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5363         PUT_SINFO(LOCAL_PM, local_pm, u32);
5364         PUT_SINFO(PEER_PM, peer_pm, u32);
5365         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5366         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5367
5368         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5369                 bss_param = nla_nest_start_noflag(msg,
5370                                                   NL80211_STA_INFO_BSS_PARAM);
5371                 if (!bss_param)
5372                         goto nla_put_failure;
5373
5374                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5375                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5376                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5377                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5378                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5379                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5380                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5381                                sinfo->bss_param.dtim_period) ||
5382                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5383                                 sinfo->bss_param.beacon_interval))
5384                         goto nla_put_failure;
5385
5386                 nla_nest_end(msg, bss_param);
5387         }
5388         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5389             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5390                     sizeof(struct nl80211_sta_flag_update),
5391                     &sinfo->sta_flags))
5392                 goto nla_put_failure;
5393
5394         PUT_SINFO_U64(T_OFFSET, t_offset);
5395         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5396         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5397         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5398         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5399         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5400         if (wiphy_ext_feature_isset(&rdev->wiphy,
5401                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5402                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5403                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5404         }
5405
5406 #undef PUT_SINFO
5407 #undef PUT_SINFO_U64
5408
5409         if (sinfo->pertid) {
5410                 struct nlattr *tidsattr;
5411                 int tid;
5412
5413                 tidsattr = nla_nest_start_noflag(msg,
5414                                                  NL80211_STA_INFO_TID_STATS);
5415                 if (!tidsattr)
5416                         goto nla_put_failure;
5417
5418                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5419                         struct cfg80211_tid_stats *tidstats;
5420                         struct nlattr *tidattr;
5421
5422                         tidstats = &sinfo->pertid[tid];
5423
5424                         if (!tidstats->filled)
5425                                 continue;
5426
5427                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5428                         if (!tidattr)
5429                                 goto nla_put_failure;
5430
5431 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5432         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5433             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5434                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5435                 goto nla_put_failure;                                   \
5436         } while (0)
5437
5438                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5439                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5440                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5441                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5442
5443 #undef PUT_TIDVAL_U64
5444                         if ((tidstats->filled &
5445                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5446                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5447                                                    NL80211_TID_STATS_TXQ_STATS))
5448                                 goto nla_put_failure;
5449
5450                         nla_nest_end(msg, tidattr);
5451                 }
5452
5453                 nla_nest_end(msg, tidsattr);
5454         }
5455
5456         nla_nest_end(msg, sinfoattr);
5457
5458         if (sinfo->assoc_req_ies_len &&
5459             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5460                     sinfo->assoc_req_ies))
5461                 goto nla_put_failure;
5462
5463         cfg80211_sinfo_release_content(sinfo);
5464         genlmsg_end(msg, hdr);
5465         return 0;
5466
5467  nla_put_failure:
5468         cfg80211_sinfo_release_content(sinfo);
5469         genlmsg_cancel(msg, hdr);
5470         return -EMSGSIZE;
5471 }
5472
5473 static int nl80211_dump_station(struct sk_buff *skb,
5474                                 struct netlink_callback *cb)
5475 {
5476         struct station_info sinfo;
5477         struct cfg80211_registered_device *rdev;
5478         struct wireless_dev *wdev;
5479         u8 mac_addr[ETH_ALEN];
5480         int sta_idx = cb->args[2];
5481         int err;
5482
5483         rtnl_lock();
5484         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5485         if (err)
5486                 goto out_err;
5487
5488         if (!wdev->netdev) {
5489                 err = -EINVAL;
5490                 goto out_err;
5491         }
5492
5493         if (!rdev->ops->dump_station) {
5494                 err = -EOPNOTSUPP;
5495                 goto out_err;
5496         }
5497
5498         while (1) {
5499                 memset(&sinfo, 0, sizeof(sinfo));
5500                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5501                                         mac_addr, &sinfo);
5502                 if (err == -ENOENT)
5503                         break;
5504                 if (err)
5505                         goto out_err;
5506
5507                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5508                                 NETLINK_CB(cb->skb).portid,
5509                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5510                                 rdev, wdev->netdev, mac_addr,
5511                                 &sinfo) < 0)
5512                         goto out;
5513
5514                 sta_idx++;
5515         }
5516
5517  out:
5518         cb->args[2] = sta_idx;
5519         err = skb->len;
5520  out_err:
5521         rtnl_unlock();
5522
5523         return err;
5524 }
5525
5526 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5527 {
5528         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5529         struct net_device *dev = info->user_ptr[1];
5530         struct station_info sinfo;
5531         struct sk_buff *msg;
5532         u8 *mac_addr = NULL;
5533         int err;
5534
5535         memset(&sinfo, 0, sizeof(sinfo));
5536
5537         if (!info->attrs[NL80211_ATTR_MAC])
5538                 return -EINVAL;
5539
5540         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5541
5542         if (!rdev->ops->get_station)
5543                 return -EOPNOTSUPP;
5544
5545         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5546         if (err)
5547                 return err;
5548
5549         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5550         if (!msg) {
5551                 cfg80211_sinfo_release_content(&sinfo);
5552                 return -ENOMEM;
5553         }
5554
5555         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5556                                  info->snd_portid, info->snd_seq, 0,
5557                                  rdev, dev, mac_addr, &sinfo) < 0) {
5558                 nlmsg_free(msg);
5559                 return -ENOBUFS;
5560         }
5561
5562         return genlmsg_reply(msg, info);
5563 }
5564
5565 int cfg80211_check_station_change(struct wiphy *wiphy,
5566                                   struct station_parameters *params,
5567                                   enum cfg80211_station_type statype)
5568 {
5569         if (params->listen_interval != -1 &&
5570             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5571                 return -EINVAL;
5572
5573         if (params->support_p2p_ps != -1 &&
5574             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5575                 return -EINVAL;
5576
5577         if (params->aid &&
5578             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5579             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5580                 return -EINVAL;
5581
5582         /* When you run into this, adjust the code below for the new flag */
5583         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5584
5585         switch (statype) {
5586         case CFG80211_STA_MESH_PEER_KERNEL:
5587         case CFG80211_STA_MESH_PEER_USER:
5588                 /*
5589                  * No ignoring the TDLS flag here -- the userspace mesh
5590                  * code doesn't have the bug of including TDLS in the
5591                  * mask everywhere.
5592                  */
5593                 if (params->sta_flags_mask &
5594                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5595                                   BIT(NL80211_STA_FLAG_MFP) |
5596                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5597                         return -EINVAL;
5598                 break;
5599         case CFG80211_STA_TDLS_PEER_SETUP:
5600         case CFG80211_STA_TDLS_PEER_ACTIVE:
5601                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5602                         return -EINVAL;
5603                 /* ignore since it can't change */
5604                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5605                 break;
5606         default:
5607                 /* disallow mesh-specific things */
5608                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5609                         return -EINVAL;
5610                 if (params->local_pm)
5611                         return -EINVAL;
5612                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5613                         return -EINVAL;
5614         }
5615
5616         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5617             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5618                 /* TDLS can't be set, ... */
5619                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5620                         return -EINVAL;
5621                 /*
5622                  * ... but don't bother the driver with it. This works around
5623                  * a hostapd/wpa_supplicant issue -- it always includes the
5624                  * TLDS_PEER flag in the mask even for AP mode.
5625                  */
5626                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5627         }
5628
5629         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5630             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5631                 /* reject other things that can't change */
5632                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5633                         return -EINVAL;
5634                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5635                         return -EINVAL;
5636                 if (params->supported_rates)
5637                         return -EINVAL;
5638                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5639                     params->he_capa)
5640                         return -EINVAL;
5641         }
5642
5643         if (statype != CFG80211_STA_AP_CLIENT &&
5644             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5645                 if (params->vlan)
5646                         return -EINVAL;
5647         }
5648
5649         switch (statype) {
5650         case CFG80211_STA_AP_MLME_CLIENT:
5651                 /* Use this only for authorizing/unauthorizing a station */
5652                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5653                         return -EOPNOTSUPP;
5654                 break;
5655         case CFG80211_STA_AP_CLIENT:
5656         case CFG80211_STA_AP_CLIENT_UNASSOC:
5657                 /* accept only the listed bits */
5658                 if (params->sta_flags_mask &
5659                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5660                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5661                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5662                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5663                                   BIT(NL80211_STA_FLAG_WME) |
5664                                   BIT(NL80211_STA_FLAG_MFP)))
5665                         return -EINVAL;
5666
5667                 /* but authenticated/associated only if driver handles it */
5668                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5669                     params->sta_flags_mask &
5670                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5671                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5672                         return -EINVAL;
5673                 break;
5674         case CFG80211_STA_IBSS:
5675         case CFG80211_STA_AP_STA:
5676                 /* reject any changes other than AUTHORIZED */
5677                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5678                         return -EINVAL;
5679                 break;
5680         case CFG80211_STA_TDLS_PEER_SETUP:
5681                 /* reject any changes other than AUTHORIZED or WME */
5682                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5683                                                BIT(NL80211_STA_FLAG_WME)))
5684                         return -EINVAL;
5685                 /* force (at least) rates when authorizing */
5686                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5687                     !params->supported_rates)
5688                         return -EINVAL;
5689                 break;
5690         case CFG80211_STA_TDLS_PEER_ACTIVE:
5691                 /* reject any changes */
5692                 return -EINVAL;
5693         case CFG80211_STA_MESH_PEER_KERNEL:
5694                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5695                         return -EINVAL;
5696                 break;
5697         case CFG80211_STA_MESH_PEER_USER:
5698                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5699                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5700                         return -EINVAL;
5701                 break;
5702         }
5703
5704         /*
5705          * Older kernel versions ignored this attribute entirely, so don't
5706          * reject attempts to update it but mark it as unused instead so the
5707          * driver won't look at the data.
5708          */
5709         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5710             statype != CFG80211_STA_TDLS_PEER_SETUP)
5711                 params->opmode_notif_used = false;
5712
5713         return 0;
5714 }
5715 EXPORT_SYMBOL(cfg80211_check_station_change);
5716
5717 /*
5718  * Get vlan interface making sure it is running and on the right wiphy.
5719  */
5720 static struct net_device *get_vlan(struct genl_info *info,
5721                                    struct cfg80211_registered_device *rdev)
5722 {
5723         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5724         struct net_device *v;
5725         int ret;
5726
5727         if (!vlanattr)
5728                 return NULL;
5729
5730         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5731         if (!v)
5732                 return ERR_PTR(-ENODEV);
5733
5734         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5735                 ret = -EINVAL;
5736                 goto error;
5737         }
5738
5739         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5740             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5741             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5742                 ret = -EINVAL;
5743                 goto error;
5744         }
5745
5746         if (!netif_running(v)) {
5747                 ret = -ENETDOWN;
5748                 goto error;
5749         }
5750
5751         return v;
5752  error:
5753         dev_put(v);
5754         return ERR_PTR(ret);
5755 }
5756
5757 static const struct nla_policy
5758 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5759         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5760         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5761 };
5762
5763 static int nl80211_parse_sta_wme(struct genl_info *info,
5764                                  struct station_parameters *params)
5765 {
5766         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5767         struct nlattr *nla;
5768         int err;
5769
5770         /* parse WME attributes if present */
5771         if (!info->attrs[NL80211_ATTR_STA_WME])
5772                 return 0;
5773
5774         nla = info->attrs[NL80211_ATTR_STA_WME];
5775         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5776                                           nl80211_sta_wme_policy,
5777                                           info->extack);
5778         if (err)
5779                 return err;
5780
5781         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5782                 params->uapsd_queues = nla_get_u8(
5783                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5784         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5785                 return -EINVAL;
5786
5787         if (tb[NL80211_STA_WME_MAX_SP])
5788                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5789
5790         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5791                 return -EINVAL;
5792
5793         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5794
5795         return 0;
5796 }
5797
5798 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5799                                       struct station_parameters *params)
5800 {
5801         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5802                 params->supported_channels =
5803                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5804                 params->supported_channels_len =
5805                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5806                 /*
5807                  * Need to include at least one (first channel, number of
5808                  * channels) tuple for each subband, and must have proper
5809                  * tuples for the rest of the data as well.
5810                  */
5811                 if (params->supported_channels_len < 2)
5812                         return -EINVAL;
5813                 if (params->supported_channels_len % 2)
5814                         return -EINVAL;
5815         }
5816
5817         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5818                 params->supported_oper_classes =
5819                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5820                 params->supported_oper_classes_len =
5821                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5822                 /*
5823                  * The value of the Length field of the Supported Operating
5824                  * Classes element is between 2 and 253.
5825                  */
5826                 if (params->supported_oper_classes_len < 2 ||
5827                     params->supported_oper_classes_len > 253)
5828                         return -EINVAL;
5829         }
5830         return 0;
5831 }
5832
5833 static int nl80211_set_station_tdls(struct genl_info *info,
5834                                     struct station_parameters *params)
5835 {
5836         int err;
5837         /* Dummy STA entry gets updated once the peer capabilities are known */
5838         if (info->attrs[NL80211_ATTR_PEER_AID])
5839                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5840         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5841                 params->ht_capa =
5842                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5843         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5844                 params->vht_capa =
5845                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5846         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5847                 params->he_capa =
5848                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5849                 params->he_capa_len =
5850                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5851
5852                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5853                         return -EINVAL;
5854         }
5855
5856         err = nl80211_parse_sta_channel_info(info, params);
5857         if (err)
5858                 return err;
5859
5860         return nl80211_parse_sta_wme(info, params);
5861 }
5862
5863 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5864                                              struct station_parameters *params)
5865 {
5866         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5867         int idx;
5868
5869         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5870                 if (!rdev->ops->set_tx_power ||
5871                     !wiphy_ext_feature_isset(&rdev->wiphy,
5872                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5873                         return -EOPNOTSUPP;
5874
5875                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5876                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5877
5878                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5879                         idx = NL80211_ATTR_STA_TX_POWER;
5880
5881                         if (info->attrs[idx])
5882                                 params->txpwr.power =
5883                                         nla_get_s16(info->attrs[idx]);
5884                         else
5885                                 return -EINVAL;
5886                 }
5887                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5888         }
5889
5890         return 0;
5891 }
5892
5893 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5894 {
5895         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5896         struct net_device *dev = info->user_ptr[1];
5897         struct station_parameters params;
5898         u8 *mac_addr;
5899         int err;
5900
5901         memset(&params, 0, sizeof(params));
5902
5903         if (!rdev->ops->change_station)
5904                 return -EOPNOTSUPP;
5905
5906         /*
5907          * AID and listen_interval properties can be set only for unassociated
5908          * station. Include these parameters here and will check them in
5909          * cfg80211_check_station_change().
5910          */
5911         if (info->attrs[NL80211_ATTR_STA_AID])
5912                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5913
5914         if (info->attrs[NL80211_ATTR_VLAN_ID])
5915                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5916
5917         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5918                 params.listen_interval =
5919                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5920         else
5921                 params.listen_interval = -1;
5922
5923         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5924                 params.support_p2p_ps =
5925                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5926         else
5927                 params.support_p2p_ps = -1;
5928
5929         if (!info->attrs[NL80211_ATTR_MAC])
5930                 return -EINVAL;
5931
5932         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5933
5934         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5935                 params.supported_rates =
5936                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5937                 params.supported_rates_len =
5938                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5939         }
5940
5941         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5942                 params.capability =
5943                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5944                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5945         }
5946
5947         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5948                 params.ext_capab =
5949                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5950                 params.ext_capab_len =
5951                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5952         }
5953
5954         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5955                 return -EINVAL;
5956
5957         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5958                 params.plink_action =
5959                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5960
5961         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5962                 params.plink_state =
5963                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5964                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5965                         params.peer_aid = nla_get_u16(
5966                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5967                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5968         }
5969
5970         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5971                 params.local_pm = nla_get_u32(
5972                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5973
5974         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5975                 params.opmode_notif_used = true;
5976                 params.opmode_notif =
5977                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5978         }
5979
5980         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5981                 params.airtime_weight =
5982                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5983
5984         if (params.airtime_weight &&
5985             !wiphy_ext_feature_isset(&rdev->wiphy,
5986                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5987                 return -EOPNOTSUPP;
5988
5989         err = nl80211_parse_sta_txpower_setting(info, &params);
5990         if (err)
5991                 return err;
5992
5993         /* Include parameters for TDLS peer (will check later) */
5994         err = nl80211_set_station_tdls(info, &params);
5995         if (err)
5996                 return err;
5997
5998         params.vlan = get_vlan(info, rdev);
5999         if (IS_ERR(params.vlan))
6000                 return PTR_ERR(params.vlan);
6001
6002         switch (dev->ieee80211_ptr->iftype) {
6003         case NL80211_IFTYPE_AP:
6004         case NL80211_IFTYPE_AP_VLAN:
6005         case NL80211_IFTYPE_P2P_GO:
6006         case NL80211_IFTYPE_P2P_CLIENT:
6007         case NL80211_IFTYPE_STATION:
6008         case NL80211_IFTYPE_ADHOC:
6009         case NL80211_IFTYPE_MESH_POINT:
6010                 break;
6011         default:
6012                 err = -EOPNOTSUPP;
6013                 goto out_put_vlan;
6014         }
6015
6016         /* driver will call cfg80211_check_station_change() */
6017         err = rdev_change_station(rdev, dev, mac_addr, &params);
6018
6019  out_put_vlan:
6020         if (params.vlan)
6021                 dev_put(params.vlan);
6022
6023         return err;
6024 }
6025
6026 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6027 {
6028         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6029         int err;
6030         struct net_device *dev = info->user_ptr[1];
6031         struct station_parameters params;
6032         u8 *mac_addr = NULL;
6033         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6034                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6035
6036         memset(&params, 0, sizeof(params));
6037
6038         if (!rdev->ops->add_station)
6039                 return -EOPNOTSUPP;
6040
6041         if (!info->attrs[NL80211_ATTR_MAC])
6042                 return -EINVAL;
6043
6044         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6045                 return -EINVAL;
6046
6047         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6048                 return -EINVAL;
6049
6050         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6051             !info->attrs[NL80211_ATTR_PEER_AID])
6052                 return -EINVAL;
6053
6054         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6055         params.supported_rates =
6056                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6057         params.supported_rates_len =
6058                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6059         params.listen_interval =
6060                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6061
6062         if (info->attrs[NL80211_ATTR_VLAN_ID])
6063                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6064
6065         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6066                 params.support_p2p_ps =
6067                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6068         } else {
6069                 /*
6070                  * if not specified, assume it's supported for P2P GO interface,
6071                  * and is NOT supported for AP interface
6072                  */
6073                 params.support_p2p_ps =
6074                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6075         }
6076
6077         if (info->attrs[NL80211_ATTR_PEER_AID])
6078                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6079         else
6080                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6081
6082         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6083                 params.capability =
6084                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6085                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6086         }
6087
6088         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6089                 params.ext_capab =
6090                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6091                 params.ext_capab_len =
6092                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6093         }
6094
6095         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6096                 params.ht_capa =
6097                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6098
6099         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6100                 params.vht_capa =
6101                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6102
6103         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6104                 params.he_capa =
6105                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6106                 params.he_capa_len =
6107                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6108
6109                 /* max len is validated in nla policy */
6110                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
6111                         return -EINVAL;
6112         }
6113
6114         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6115                 params.opmode_notif_used = true;
6116                 params.opmode_notif =
6117                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6118         }
6119
6120         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6121                 params.plink_action =
6122                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6123
6124         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6125                 params.airtime_weight =
6126                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6127
6128         if (params.airtime_weight &&
6129             !wiphy_ext_feature_isset(&rdev->wiphy,
6130                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6131                 return -EOPNOTSUPP;
6132
6133         err = nl80211_parse_sta_txpower_setting(info, &params);
6134         if (err)
6135                 return err;
6136
6137         err = nl80211_parse_sta_channel_info(info, &params);
6138         if (err)
6139                 return err;
6140
6141         err = nl80211_parse_sta_wme(info, &params);
6142         if (err)
6143                 return err;
6144
6145         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6146                 return -EINVAL;
6147
6148         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6149          * as userspace might just pass through the capabilities from the IEs
6150          * directly, rather than enforcing this restriction and returning an
6151          * error in this case.
6152          */
6153         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6154                 params.ht_capa = NULL;
6155                 params.vht_capa = NULL;
6156
6157                 /* HE requires WME */
6158                 if (params.he_capa_len)
6159                         return -EINVAL;
6160         }
6161
6162         /* When you run into this, adjust the code below for the new flag */
6163         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6164
6165         switch (dev->ieee80211_ptr->iftype) {
6166         case NL80211_IFTYPE_AP:
6167         case NL80211_IFTYPE_AP_VLAN:
6168         case NL80211_IFTYPE_P2P_GO:
6169                 /* ignore WME attributes if iface/sta is not capable */
6170                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6171                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6172                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6173
6174                 /* TDLS peers cannot be added */
6175                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6176                     info->attrs[NL80211_ATTR_PEER_AID])
6177                         return -EINVAL;
6178                 /* but don't bother the driver with it */
6179                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6180
6181                 /* allow authenticated/associated only if driver handles it */
6182                 if (!(rdev->wiphy.features &
6183                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6184                     params.sta_flags_mask & auth_assoc)
6185                         return -EINVAL;
6186
6187                 /* Older userspace, or userspace wanting to be compatible with
6188                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6189                  * and assoc flags in the mask, but assumes the station will be
6190                  * added as associated anyway since this was the required driver
6191                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6192                  * introduced.
6193                  * In order to not bother drivers with this quirk in the API
6194                  * set the flags in both the mask and set for new stations in
6195                  * this case.
6196                  */
6197                 if (!(params.sta_flags_mask & auth_assoc)) {
6198                         params.sta_flags_mask |= auth_assoc;
6199                         params.sta_flags_set |= auth_assoc;
6200                 }
6201
6202                 /* must be last in here for error handling */
6203                 params.vlan = get_vlan(info, rdev);
6204                 if (IS_ERR(params.vlan))
6205                         return PTR_ERR(params.vlan);
6206                 break;
6207         case NL80211_IFTYPE_MESH_POINT:
6208                 /* ignore uAPSD data */
6209                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6210
6211                 /* associated is disallowed */
6212                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6213                         return -EINVAL;
6214                 /* TDLS peers cannot be added */
6215                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6216                     info->attrs[NL80211_ATTR_PEER_AID])
6217                         return -EINVAL;
6218                 break;
6219         case NL80211_IFTYPE_STATION:
6220         case NL80211_IFTYPE_P2P_CLIENT:
6221                 /* ignore uAPSD data */
6222                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6223
6224                 /* these are disallowed */
6225                 if (params.sta_flags_mask &
6226                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6227                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6228                         return -EINVAL;
6229                 /* Only TDLS peers can be added */
6230                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6231                         return -EINVAL;
6232                 /* Can only add if TDLS ... */
6233                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6234                         return -EOPNOTSUPP;
6235                 /* ... with external setup is supported */
6236                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6237                         return -EOPNOTSUPP;
6238                 /*
6239                  * Older wpa_supplicant versions always mark the TDLS peer
6240                  * as authorized, but it shouldn't yet be.
6241                  */
6242                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6243                 break;
6244         default:
6245                 return -EOPNOTSUPP;
6246         }
6247
6248         /* be aware of params.vlan when changing code here */
6249
6250         err = rdev_add_station(rdev, dev, mac_addr, &params);
6251
6252         if (params.vlan)
6253                 dev_put(params.vlan);
6254         return err;
6255 }
6256
6257 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6258 {
6259         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6260         struct net_device *dev = info->user_ptr[1];
6261         struct station_del_parameters params;
6262
6263         memset(&params, 0, sizeof(params));
6264
6265         if (info->attrs[NL80211_ATTR_MAC])
6266                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6267
6268         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6269             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6270             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
6271             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6272                 return -EINVAL;
6273
6274         if (!rdev->ops->del_station)
6275                 return -EOPNOTSUPP;
6276
6277         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6278                 params.subtype =
6279                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6280                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6281                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6282                         return -EINVAL;
6283         } else {
6284                 /* Default to Deauthentication frame */
6285                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6286         }
6287
6288         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6289                 params.reason_code =
6290                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6291                 if (params.reason_code == 0)
6292                         return -EINVAL; /* 0 is reserved */
6293         } else {
6294                 /* Default to reason code 2 */
6295                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6296         }
6297
6298         return rdev_del_station(rdev, dev, &params);
6299 }
6300
6301 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6302                                 int flags, struct net_device *dev,
6303                                 u8 *dst, u8 *next_hop,
6304                                 struct mpath_info *pinfo)
6305 {
6306         void *hdr;
6307         struct nlattr *pinfoattr;
6308
6309         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6310         if (!hdr)
6311                 return -1;
6312
6313         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6314             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6315             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6316             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6317                 goto nla_put_failure;
6318
6319         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6320         if (!pinfoattr)
6321                 goto nla_put_failure;
6322         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6323             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6324                         pinfo->frame_qlen))
6325                 goto nla_put_failure;
6326         if (((pinfo->filled & MPATH_INFO_SN) &&
6327              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6328             ((pinfo->filled & MPATH_INFO_METRIC) &&
6329              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6330                          pinfo->metric)) ||
6331             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6332              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6333                          pinfo->exptime)) ||
6334             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6335              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6336                         pinfo->flags)) ||
6337             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6338              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6339                          pinfo->discovery_timeout)) ||
6340             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6341              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6342                         pinfo->discovery_retries)) ||
6343             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6344              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6345                         pinfo->hop_count)) ||
6346             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6347              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6348                          pinfo->path_change_count)))
6349                 goto nla_put_failure;
6350
6351         nla_nest_end(msg, pinfoattr);
6352
6353         genlmsg_end(msg, hdr);
6354         return 0;
6355
6356  nla_put_failure:
6357         genlmsg_cancel(msg, hdr);
6358         return -EMSGSIZE;
6359 }
6360
6361 static int nl80211_dump_mpath(struct sk_buff *skb,
6362                               struct netlink_callback *cb)
6363 {
6364         struct mpath_info pinfo;
6365         struct cfg80211_registered_device *rdev;
6366         struct wireless_dev *wdev;
6367         u8 dst[ETH_ALEN];
6368         u8 next_hop[ETH_ALEN];
6369         int path_idx = cb->args[2];
6370         int err;
6371
6372         rtnl_lock();
6373         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6374         if (err)
6375                 goto out_err;
6376
6377         if (!rdev->ops->dump_mpath) {
6378                 err = -EOPNOTSUPP;
6379                 goto out_err;
6380         }
6381
6382         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6383                 err = -EOPNOTSUPP;
6384                 goto out_err;
6385         }
6386
6387         while (1) {
6388                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6389                                       next_hop, &pinfo);
6390                 if (err == -ENOENT)
6391                         break;
6392                 if (err)
6393                         goto out_err;
6394
6395                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6396                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6397                                        wdev->netdev, dst, next_hop,
6398                                        &pinfo) < 0)
6399                         goto out;
6400
6401                 path_idx++;
6402         }
6403
6404  out:
6405         cb->args[2] = path_idx;
6406         err = skb->len;
6407  out_err:
6408         rtnl_unlock();
6409         return err;
6410 }
6411
6412 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6413 {
6414         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6415         int err;
6416         struct net_device *dev = info->user_ptr[1];
6417         struct mpath_info pinfo;
6418         struct sk_buff *msg;
6419         u8 *dst = NULL;
6420         u8 next_hop[ETH_ALEN];
6421
6422         memset(&pinfo, 0, sizeof(pinfo));
6423
6424         if (!info->attrs[NL80211_ATTR_MAC])
6425                 return -EINVAL;
6426
6427         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6428
6429         if (!rdev->ops->get_mpath)
6430                 return -EOPNOTSUPP;
6431
6432         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6433                 return -EOPNOTSUPP;
6434
6435         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6436         if (err)
6437                 return err;
6438
6439         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6440         if (!msg)
6441                 return -ENOMEM;
6442
6443         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6444                                  dev, dst, next_hop, &pinfo) < 0) {
6445                 nlmsg_free(msg);
6446                 return -ENOBUFS;
6447         }
6448
6449         return genlmsg_reply(msg, info);
6450 }
6451
6452 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6453 {
6454         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6455         struct net_device *dev = info->user_ptr[1];
6456         u8 *dst = NULL;
6457         u8 *next_hop = NULL;
6458
6459         if (!info->attrs[NL80211_ATTR_MAC])
6460                 return -EINVAL;
6461
6462         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6463                 return -EINVAL;
6464
6465         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6466         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6467
6468         if (!rdev->ops->change_mpath)
6469                 return -EOPNOTSUPP;
6470
6471         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6472                 return -EOPNOTSUPP;
6473
6474         return rdev_change_mpath(rdev, dev, dst, next_hop);
6475 }
6476
6477 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6478 {
6479         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6480         struct net_device *dev = info->user_ptr[1];
6481         u8 *dst = NULL;
6482         u8 *next_hop = NULL;
6483
6484         if (!info->attrs[NL80211_ATTR_MAC])
6485                 return -EINVAL;
6486
6487         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6488                 return -EINVAL;
6489
6490         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6491         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6492
6493         if (!rdev->ops->add_mpath)
6494                 return -EOPNOTSUPP;
6495
6496         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6497                 return -EOPNOTSUPP;
6498
6499         return rdev_add_mpath(rdev, dev, dst, next_hop);
6500 }
6501
6502 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6503 {
6504         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6505         struct net_device *dev = info->user_ptr[1];
6506         u8 *dst = NULL;
6507
6508         if (info->attrs[NL80211_ATTR_MAC])
6509                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6510
6511         if (!rdev->ops->del_mpath)
6512                 return -EOPNOTSUPP;
6513
6514         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6515                 return -EOPNOTSUPP;
6516
6517         return rdev_del_mpath(rdev, dev, dst);
6518 }
6519
6520 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6521 {
6522         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6523         int err;
6524         struct net_device *dev = info->user_ptr[1];
6525         struct mpath_info pinfo;
6526         struct sk_buff *msg;
6527         u8 *dst = NULL;
6528         u8 mpp[ETH_ALEN];
6529
6530         memset(&pinfo, 0, sizeof(pinfo));
6531
6532         if (!info->attrs[NL80211_ATTR_MAC])
6533                 return -EINVAL;
6534
6535         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6536
6537         if (!rdev->ops->get_mpp)
6538                 return -EOPNOTSUPP;
6539
6540         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6541                 return -EOPNOTSUPP;
6542
6543         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6544         if (err)
6545                 return err;
6546
6547         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6548         if (!msg)
6549                 return -ENOMEM;
6550
6551         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6552                                dev, dst, mpp, &pinfo) < 0) {
6553                 nlmsg_free(msg);
6554                 return -ENOBUFS;
6555         }
6556
6557         return genlmsg_reply(msg, info);
6558 }
6559
6560 static int nl80211_dump_mpp(struct sk_buff *skb,
6561                             struct netlink_callback *cb)
6562 {
6563         struct mpath_info pinfo;
6564         struct cfg80211_registered_device *rdev;
6565         struct wireless_dev *wdev;
6566         u8 dst[ETH_ALEN];
6567         u8 mpp[ETH_ALEN];
6568         int path_idx = cb->args[2];
6569         int err;
6570
6571         rtnl_lock();
6572         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6573         if (err)
6574                 goto out_err;
6575
6576         if (!rdev->ops->dump_mpp) {
6577                 err = -EOPNOTSUPP;
6578                 goto out_err;
6579         }
6580
6581         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6582                 err = -EOPNOTSUPP;
6583                 goto out_err;
6584         }
6585
6586         while (1) {
6587                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6588                                     mpp, &pinfo);
6589                 if (err == -ENOENT)
6590                         break;
6591                 if (err)
6592                         goto out_err;
6593
6594                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6595                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6596                                        wdev->netdev, dst, mpp,
6597                                        &pinfo) < 0)
6598                         goto out;
6599
6600                 path_idx++;
6601         }
6602
6603  out:
6604         cb->args[2] = path_idx;
6605         err = skb->len;
6606  out_err:
6607         rtnl_unlock();
6608         return err;
6609 }
6610
6611 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6612 {
6613         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6614         struct net_device *dev = info->user_ptr[1];
6615         struct wireless_dev *wdev = dev->ieee80211_ptr;
6616         struct bss_parameters params;
6617         int err;
6618
6619         memset(&params, 0, sizeof(params));
6620         /* default to not changing parameters */
6621         params.use_cts_prot = -1;
6622         params.use_short_preamble = -1;
6623         params.use_short_slot_time = -1;
6624         params.ap_isolate = -1;
6625         params.ht_opmode = -1;
6626         params.p2p_ctwindow = -1;
6627         params.p2p_opp_ps = -1;
6628
6629         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6630                 params.use_cts_prot =
6631                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6632         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6633                 params.use_short_preamble =
6634                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6635         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6636                 params.use_short_slot_time =
6637                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6638         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6639                 params.basic_rates =
6640                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6641                 params.basic_rates_len =
6642                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6643         }
6644         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6645                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6646         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6647                 params.ht_opmode =
6648                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6649
6650         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6651                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6652                         return -EINVAL;
6653                 params.p2p_ctwindow =
6654                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6655                 if (params.p2p_ctwindow != 0 &&
6656                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6657                         return -EINVAL;
6658         }
6659
6660         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6661                 u8 tmp;
6662
6663                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6664                         return -EINVAL;
6665                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6666                 params.p2p_opp_ps = tmp;
6667                 if (params.p2p_opp_ps &&
6668                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6669                         return -EINVAL;
6670         }
6671
6672         if (!rdev->ops->change_bss)
6673                 return -EOPNOTSUPP;
6674
6675         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6676             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6677                 return -EOPNOTSUPP;
6678
6679         wdev_lock(wdev);
6680         err = rdev_change_bss(rdev, dev, &params);
6681         wdev_unlock(wdev);
6682
6683         return err;
6684 }
6685
6686 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6687 {
6688         char *data = NULL;
6689         bool is_indoor;
6690         enum nl80211_user_reg_hint_type user_reg_hint_type;
6691         u32 owner_nlportid;
6692
6693         /*
6694          * You should only get this when cfg80211 hasn't yet initialized
6695          * completely when built-in to the kernel right between the time
6696          * window between nl80211_init() and regulatory_init(), if that is
6697          * even possible.
6698          */
6699         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6700                 return -EINPROGRESS;
6701
6702         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6703                 user_reg_hint_type =
6704                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6705         else
6706                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6707
6708         switch (user_reg_hint_type) {
6709         case NL80211_USER_REG_HINT_USER:
6710         case NL80211_USER_REG_HINT_CELL_BASE:
6711                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6712                         return -EINVAL;
6713
6714                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6715                 return regulatory_hint_user(data, user_reg_hint_type);
6716         case NL80211_USER_REG_HINT_INDOOR:
6717                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6718                         owner_nlportid = info->snd_portid;
6719                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6720                 } else {
6721                         owner_nlportid = 0;
6722                         is_indoor = true;
6723                 }
6724
6725                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6726         default:
6727                 return -EINVAL;
6728         }
6729 }
6730
6731 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6732 {
6733         return reg_reload_regdb();
6734 }
6735
6736 static int nl80211_get_mesh_config(struct sk_buff *skb,
6737                                    struct genl_info *info)
6738 {
6739         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6740         struct net_device *dev = info->user_ptr[1];
6741         struct wireless_dev *wdev = dev->ieee80211_ptr;
6742         struct mesh_config cur_params;
6743         int err = 0;
6744         void *hdr;
6745         struct nlattr *pinfoattr;
6746         struct sk_buff *msg;
6747
6748         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6749                 return -EOPNOTSUPP;
6750
6751         if (!rdev->ops->get_mesh_config)
6752                 return -EOPNOTSUPP;
6753
6754         wdev_lock(wdev);
6755         /* If not connected, get default parameters */
6756         if (!wdev->mesh_id_len)
6757                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6758         else
6759                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6760         wdev_unlock(wdev);
6761
6762         if (err)
6763                 return err;
6764
6765         /* Draw up a netlink message to send back */
6766         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6767         if (!msg)
6768                 return -ENOMEM;
6769         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6770                              NL80211_CMD_GET_MESH_CONFIG);
6771         if (!hdr)
6772                 goto out;
6773         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6774         if (!pinfoattr)
6775                 goto nla_put_failure;
6776         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6777             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6778                         cur_params.dot11MeshRetryTimeout) ||
6779             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6780                         cur_params.dot11MeshConfirmTimeout) ||
6781             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6782                         cur_params.dot11MeshHoldingTimeout) ||
6783             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6784                         cur_params.dot11MeshMaxPeerLinks) ||
6785             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6786                        cur_params.dot11MeshMaxRetries) ||
6787             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6788                        cur_params.dot11MeshTTL) ||
6789             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6790                        cur_params.element_ttl) ||
6791             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6792                        cur_params.auto_open_plinks) ||
6793             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6794                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6795             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6796                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6797             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6798                         cur_params.path_refresh_time) ||
6799             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6800                         cur_params.min_discovery_timeout) ||
6801             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6802                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6803             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6804                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6805             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6806                         cur_params.dot11MeshHWMPperrMinInterval) ||
6807             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6808                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6809             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6810                        cur_params.dot11MeshHWMPRootMode) ||
6811             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6812                         cur_params.dot11MeshHWMPRannInterval) ||
6813             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6814                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6815             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6816                        cur_params.dot11MeshForwarding) ||
6817             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6818                         cur_params.rssi_threshold) ||
6819             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6820                         cur_params.ht_opmode) ||
6821             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6822                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6823             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6824                         cur_params.dot11MeshHWMProotInterval) ||
6825             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6826                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6827             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6828                         cur_params.power_mode) ||
6829             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6830                         cur_params.dot11MeshAwakeWindowDuration) ||
6831             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6832                         cur_params.plink_timeout) ||
6833             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6834                        cur_params.dot11MeshConnectedToMeshGate))
6835                 goto nla_put_failure;
6836         nla_nest_end(msg, pinfoattr);
6837         genlmsg_end(msg, hdr);
6838         return genlmsg_reply(msg, info);
6839
6840  nla_put_failure:
6841  out:
6842         nlmsg_free(msg);
6843         return -ENOBUFS;
6844 }
6845
6846 static const struct nla_policy
6847 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6848         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6849                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6850         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6851                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6852         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6853                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6854         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6855                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6856         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6857         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6858         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6859         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6860         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6861                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6862         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6863         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6864         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6865         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6866         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6867                 NLA_POLICY_MIN(NLA_U16, 1),
6868         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6869                 NLA_POLICY_MIN(NLA_U16, 1),
6870         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6871                 NLA_POLICY_MIN(NLA_U16, 1),
6872         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6873         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6874                 NLA_POLICY_MIN(NLA_U16, 1),
6875         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6876         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6877         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6878                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6879         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6880         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6881         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6882                 NLA_POLICY_MIN(NLA_U16, 1),
6883         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6884                 NLA_POLICY_MIN(NLA_U16, 1),
6885         [NL80211_MESHCONF_POWER_MODE] =
6886                 NLA_POLICY_RANGE(NLA_U32,
6887                                  NL80211_MESH_POWER_ACTIVE,
6888                                  NL80211_MESH_POWER_MAX),
6889         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6890         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6891         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6892 };
6893
6894 static const struct nla_policy
6895         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6896         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6897         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6898         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6899         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6900         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6901         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6902         [NL80211_MESH_SETUP_IE] =
6903                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6904                                        IEEE80211_MAX_DATA_LEN),
6905         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6906 };
6907
6908 static int nl80211_parse_mesh_config(struct genl_info *info,
6909                                      struct mesh_config *cfg,
6910                                      u32 *mask_out)
6911 {
6912         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6913         u32 mask = 0;
6914         u16 ht_opmode;
6915
6916 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6917 do {                                                                    \
6918         if (tb[attr]) {                                                 \
6919                 cfg->param = fn(tb[attr]);                              \
6920                 mask |= BIT((attr) - 1);                                \
6921         }                                                               \
6922 } while (0)
6923
6924         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6925                 return -EINVAL;
6926         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6927                 return -EINVAL;
6928
6929         /* This makes sure that there aren't more than 32 mesh config
6930          * parameters (otherwise our bitfield scheme would not work.) */
6931         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6932
6933         /* Fill in the params struct */
6934         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6935                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6936         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6937                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6938                                   nla_get_u16);
6939         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6940                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6941                                   nla_get_u16);
6942         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6943                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6944                                   nla_get_u16);
6945         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6946                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6947         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6948                                   NL80211_MESHCONF_TTL, nla_get_u8);
6949         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6950                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6951         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6952                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6953                                   nla_get_u8);
6954         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6955                                   mask,
6956                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6957                                   nla_get_u32);
6958         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6959                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6960                                   nla_get_u8);
6961         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6962                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6963                                   nla_get_u32);
6964         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6965             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6966                 return -EINVAL;
6967         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6968                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6969                                   nla_get_u16);
6970         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6971                                   mask,
6972                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6973                                   nla_get_u32);
6974         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6975             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6976              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6977                 return -EINVAL;
6978         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6979                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6980                                   nla_get_u16);
6981         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6982                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6983                                   nla_get_u16);
6984         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6985                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6986                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6987                                   nla_get_u16);
6988         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6989                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6990         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6991                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6992                                   nla_get_u16);
6993         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6994                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6995                                   nla_get_u8);
6996         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6997                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6998         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6999                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7000                                   nla_get_s32);
7001         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7002                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7003                                   nla_get_u8);
7004         /*
7005          * Check HT operation mode based on
7006          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7007          */
7008         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7009                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7010
7011                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7012                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7013                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7014                         return -EINVAL;
7015
7016                 /* NON_HT_STA bit is reserved, but some programs set it */
7017                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7018
7019                 cfg->ht_opmode = ht_opmode;
7020                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7021         }
7022         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7023                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7024                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7025                                   nla_get_u32);
7026         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7027             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7028              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7029                 return -EINVAL;
7030         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7031                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7032                                   nla_get_u16);
7033         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7034                                   mask,
7035                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7036                                   nla_get_u16);
7037         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7038                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7039         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7040                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7041         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7042                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7043         if (mask_out)
7044                 *mask_out = mask;
7045
7046         return 0;
7047
7048 #undef FILL_IN_MESH_PARAM_IF_SET
7049 }
7050
7051 static int nl80211_parse_mesh_setup(struct genl_info *info,
7052                                      struct mesh_setup *setup)
7053 {
7054         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7055         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7056
7057         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7058                 return -EINVAL;
7059         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7060                 return -EINVAL;
7061
7062         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7063                 setup->sync_method =
7064                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7065                  IEEE80211_SYNC_METHOD_VENDOR :
7066                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7067
7068         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7069                 setup->path_sel_proto =
7070                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7071                  IEEE80211_PATH_PROTOCOL_VENDOR :
7072                  IEEE80211_PATH_PROTOCOL_HWMP;
7073
7074         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7075                 setup->path_metric =
7076                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7077                  IEEE80211_PATH_METRIC_VENDOR :
7078                  IEEE80211_PATH_METRIC_AIRTIME;
7079
7080         if (tb[NL80211_MESH_SETUP_IE]) {
7081                 struct nlattr *ieattr =
7082                         tb[NL80211_MESH_SETUP_IE];
7083                 setup->ie = nla_data(ieattr);
7084                 setup->ie_len = nla_len(ieattr);
7085         }
7086         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7087             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7088                 return -EINVAL;
7089         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7090         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7091         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7092         if (setup->is_secure)
7093                 setup->user_mpm = true;
7094
7095         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7096                 if (!setup->user_mpm)
7097                         return -EINVAL;
7098                 setup->auth_id =
7099                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7100         }
7101
7102         return 0;
7103 }
7104
7105 static int nl80211_update_mesh_config(struct sk_buff *skb,
7106                                       struct genl_info *info)
7107 {
7108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7109         struct net_device *dev = info->user_ptr[1];
7110         struct wireless_dev *wdev = dev->ieee80211_ptr;
7111         struct mesh_config cfg;
7112         u32 mask;
7113         int err;
7114
7115         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7116                 return -EOPNOTSUPP;
7117
7118         if (!rdev->ops->update_mesh_config)
7119                 return -EOPNOTSUPP;
7120
7121         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7122         if (err)
7123                 return err;
7124
7125         wdev_lock(wdev);
7126         if (!wdev->mesh_id_len)
7127                 err = -ENOLINK;
7128
7129         if (!err)
7130                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7131
7132         wdev_unlock(wdev);
7133
7134         return err;
7135 }
7136
7137 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7138                               struct sk_buff *msg)
7139 {
7140         struct nlattr *nl_reg_rules;
7141         unsigned int i;
7142
7143         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7144             (regdom->dfs_region &&
7145              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7146                 goto nla_put_failure;
7147
7148         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7149         if (!nl_reg_rules)
7150                 goto nla_put_failure;
7151
7152         for (i = 0; i < regdom->n_reg_rules; i++) {
7153                 struct nlattr *nl_reg_rule;
7154                 const struct ieee80211_reg_rule *reg_rule;
7155                 const struct ieee80211_freq_range *freq_range;
7156                 const struct ieee80211_power_rule *power_rule;
7157                 unsigned int max_bandwidth_khz;
7158
7159                 reg_rule = &regdom->reg_rules[i];
7160                 freq_range = &reg_rule->freq_range;
7161                 power_rule = &reg_rule->power_rule;
7162
7163                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7164                 if (!nl_reg_rule)
7165                         goto nla_put_failure;
7166
7167                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7168                 if (!max_bandwidth_khz)
7169                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7170                                                                   reg_rule);
7171
7172                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7173                                 reg_rule->flags) ||
7174                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7175                                 freq_range->start_freq_khz) ||
7176                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7177                                 freq_range->end_freq_khz) ||
7178                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7179                                 max_bandwidth_khz) ||
7180                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7181                                 power_rule->max_antenna_gain) ||
7182                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7183                                 power_rule->max_eirp) ||
7184                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7185                                 reg_rule->dfs_cac_ms))
7186                         goto nla_put_failure;
7187
7188                 nla_nest_end(msg, nl_reg_rule);
7189         }
7190
7191         nla_nest_end(msg, nl_reg_rules);
7192         return 0;
7193
7194 nla_put_failure:
7195         return -EMSGSIZE;
7196 }
7197
7198 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7199 {
7200         const struct ieee80211_regdomain *regdom = NULL;
7201         struct cfg80211_registered_device *rdev;
7202         struct wiphy *wiphy = NULL;
7203         struct sk_buff *msg;
7204         void *hdr;
7205
7206         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7207         if (!msg)
7208                 return -ENOBUFS;
7209
7210         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7211                              NL80211_CMD_GET_REG);
7212         if (!hdr)
7213                 goto put_failure;
7214
7215         if (info->attrs[NL80211_ATTR_WIPHY]) {
7216                 bool self_managed;
7217
7218                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7219                 if (IS_ERR(rdev)) {
7220                         nlmsg_free(msg);
7221                         return PTR_ERR(rdev);
7222                 }
7223
7224                 wiphy = &rdev->wiphy;
7225                 self_managed = wiphy->regulatory_flags &
7226                                REGULATORY_WIPHY_SELF_MANAGED;
7227                 regdom = get_wiphy_regdom(wiphy);
7228
7229                 /* a self-managed-reg device must have a private regdom */
7230                 if (WARN_ON(!regdom && self_managed)) {
7231                         nlmsg_free(msg);
7232                         return -EINVAL;
7233                 }
7234
7235                 if (regdom &&
7236                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7237                         goto nla_put_failure;
7238         }
7239
7240         if (!wiphy && reg_last_request_cell_base() &&
7241             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7242                         NL80211_USER_REG_HINT_CELL_BASE))
7243                 goto nla_put_failure;
7244
7245         rcu_read_lock();
7246
7247         if (!regdom)
7248                 regdom = rcu_dereference(cfg80211_regdomain);
7249
7250         if (nl80211_put_regdom(regdom, msg))
7251                 goto nla_put_failure_rcu;
7252
7253         rcu_read_unlock();
7254
7255         genlmsg_end(msg, hdr);
7256         return genlmsg_reply(msg, info);
7257
7258 nla_put_failure_rcu:
7259         rcu_read_unlock();
7260 nla_put_failure:
7261 put_failure:
7262         nlmsg_free(msg);
7263         return -EMSGSIZE;
7264 }
7265
7266 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7267                                u32 seq, int flags, struct wiphy *wiphy,
7268                                const struct ieee80211_regdomain *regdom)
7269 {
7270         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7271                                    NL80211_CMD_GET_REG);
7272
7273         if (!hdr)
7274                 return -1;
7275
7276         genl_dump_check_consistent(cb, hdr);
7277
7278         if (nl80211_put_regdom(regdom, msg))
7279                 goto nla_put_failure;
7280
7281         if (!wiphy && reg_last_request_cell_base() &&
7282             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7283                         NL80211_USER_REG_HINT_CELL_BASE))
7284                 goto nla_put_failure;
7285
7286         if (wiphy &&
7287             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7288                 goto nla_put_failure;
7289
7290         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7291             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7292                 goto nla_put_failure;
7293
7294         genlmsg_end(msg, hdr);
7295         return 0;
7296
7297 nla_put_failure:
7298         genlmsg_cancel(msg, hdr);
7299         return -EMSGSIZE;
7300 }
7301
7302 static int nl80211_get_reg_dump(struct sk_buff *skb,
7303                                 struct netlink_callback *cb)
7304 {
7305         const struct ieee80211_regdomain *regdom = NULL;
7306         struct cfg80211_registered_device *rdev;
7307         int err, reg_idx, start = cb->args[2];
7308
7309         rtnl_lock();
7310
7311         if (cfg80211_regdomain && start == 0) {
7312                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7313                                           NLM_F_MULTI, NULL,
7314                                           rtnl_dereference(cfg80211_regdomain));
7315                 if (err < 0)
7316                         goto out_err;
7317         }
7318
7319         /* the global regdom is idx 0 */
7320         reg_idx = 1;
7321         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7322                 regdom = get_wiphy_regdom(&rdev->wiphy);
7323                 if (!regdom)
7324                         continue;
7325
7326                 if (++reg_idx <= start)
7327                         continue;
7328
7329                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7330                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7331                 if (err < 0) {
7332                         reg_idx--;
7333                         break;
7334                 }
7335         }
7336
7337         cb->args[2] = reg_idx;
7338         err = skb->len;
7339 out_err:
7340         rtnl_unlock();
7341         return err;
7342 }
7343
7344 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7345 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7346         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7347         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7348         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7349         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7350         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7351         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7352         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7353 };
7354
7355 static int parse_reg_rule(struct nlattr *tb[],
7356         struct ieee80211_reg_rule *reg_rule)
7357 {
7358         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7359         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7360
7361         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7362                 return -EINVAL;
7363         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7364                 return -EINVAL;
7365         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7366                 return -EINVAL;
7367         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7368                 return -EINVAL;
7369         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7370                 return -EINVAL;
7371
7372         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7373
7374         freq_range->start_freq_khz =
7375                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7376         freq_range->end_freq_khz =
7377                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7378         freq_range->max_bandwidth_khz =
7379                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7380
7381         power_rule->max_eirp =
7382                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7383
7384         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7385                 power_rule->max_antenna_gain =
7386                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7387
7388         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7389                 reg_rule->dfs_cac_ms =
7390                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7391
7392         return 0;
7393 }
7394
7395 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7396 {
7397         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7398         struct nlattr *nl_reg_rule;
7399         char *alpha2;
7400         int rem_reg_rules, r;
7401         u32 num_rules = 0, rule_idx = 0;
7402         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7403         struct ieee80211_regdomain *rd;
7404
7405         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7406                 return -EINVAL;
7407
7408         if (!info->attrs[NL80211_ATTR_REG_RULES])
7409                 return -EINVAL;
7410
7411         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7412
7413         if (info->attrs[NL80211_ATTR_DFS_REGION])
7414                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7415
7416         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7417                             rem_reg_rules) {
7418                 num_rules++;
7419                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7420                         return -EINVAL;
7421         }
7422
7423         if (!reg_is_valid_request(alpha2))
7424                 return -EINVAL;
7425
7426         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7427         if (!rd)
7428                 return -ENOMEM;
7429
7430         rd->n_reg_rules = num_rules;
7431         rd->alpha2[0] = alpha2[0];
7432         rd->alpha2[1] = alpha2[1];
7433
7434         /*
7435          * Disable DFS master mode if the DFS region was
7436          * not supported or known on this kernel.
7437          */
7438         if (reg_supported_dfs_region(dfs_region))
7439                 rd->dfs_region = dfs_region;
7440
7441         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7442                             rem_reg_rules) {
7443                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7444                                                 nl_reg_rule, reg_rule_policy,
7445                                                 info->extack);
7446                 if (r)
7447                         goto bad_reg;
7448                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7449                 if (r)
7450                         goto bad_reg;
7451
7452                 rule_idx++;
7453
7454                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7455                         r = -EINVAL;
7456                         goto bad_reg;
7457                 }
7458         }
7459
7460         /* set_regdom takes ownership of rd */
7461         return set_regdom(rd, REGD_SOURCE_CRDA);
7462  bad_reg:
7463         kfree(rd);
7464         return r;
7465 }
7466 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7467
7468 static int validate_scan_freqs(struct nlattr *freqs)
7469 {
7470         struct nlattr *attr1, *attr2;
7471         int n_channels = 0, tmp1, tmp2;
7472
7473         nla_for_each_nested(attr1, freqs, tmp1)
7474                 if (nla_len(attr1) != sizeof(u32))
7475                         return 0;
7476
7477         nla_for_each_nested(attr1, freqs, tmp1) {
7478                 n_channels++;
7479                 /*
7480                  * Some hardware has a limited channel list for
7481                  * scanning, and it is pretty much nonsensical
7482                  * to scan for a channel twice, so disallow that
7483                  * and don't require drivers to check that the
7484                  * channel list they get isn't longer than what
7485                  * they can scan, as long as they can scan all
7486                  * the channels they registered at once.
7487                  */
7488                 nla_for_each_nested(attr2, freqs, tmp2)
7489                         if (attr1 != attr2 &&
7490                             nla_get_u32(attr1) == nla_get_u32(attr2))
7491                                 return 0;
7492         }
7493
7494         return n_channels;
7495 }
7496
7497 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7498 {
7499         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7500 }
7501
7502 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7503                             struct cfg80211_bss_selection *bss_select)
7504 {
7505         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7506         struct nlattr *nest;
7507         int err;
7508         bool found = false;
7509         int i;
7510
7511         /* only process one nested attribute */
7512         nest = nla_data(nla);
7513         if (!nla_ok(nest, nla_len(nest)))
7514                 return -EINVAL;
7515
7516         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7517                                           nest, nl80211_bss_select_policy,
7518                                           NULL);
7519         if (err)
7520                 return err;
7521
7522         /* only one attribute may be given */
7523         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7524                 if (attr[i]) {
7525                         if (found)
7526                                 return -EINVAL;
7527                         found = true;
7528                 }
7529         }
7530
7531         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7532
7533         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7534                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7535
7536         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7537                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7538                 bss_select->param.band_pref =
7539                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7540                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7541                         return -EINVAL;
7542         }
7543
7544         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7545                 struct nl80211_bss_select_rssi_adjust *adj_param;
7546
7547                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7548                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7549                 bss_select->param.adjust.band = adj_param->band;
7550                 bss_select->param.adjust.delta = adj_param->delta;
7551                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7552                         return -EINVAL;
7553         }
7554
7555         /* user-space did not provide behaviour attribute */
7556         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7557                 return -EINVAL;
7558
7559         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7560                 return -EINVAL;
7561
7562         return 0;
7563 }
7564
7565 int nl80211_parse_random_mac(struct nlattr **attrs,
7566                              u8 *mac_addr, u8 *mac_addr_mask)
7567 {
7568         int i;
7569
7570         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7571                 eth_zero_addr(mac_addr);
7572                 eth_zero_addr(mac_addr_mask);
7573                 mac_addr[0] = 0x2;
7574                 mac_addr_mask[0] = 0x3;
7575
7576                 return 0;
7577         }
7578
7579         /* need both or none */
7580         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7581                 return -EINVAL;
7582
7583         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7584         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7585
7586         /* don't allow or configure an mcast address */
7587         if (!is_multicast_ether_addr(mac_addr_mask) ||
7588             is_multicast_ether_addr(mac_addr))
7589                 return -EINVAL;
7590
7591         /*
7592          * allow users to pass a MAC address that has bits set outside
7593          * of the mask, but don't bother drivers with having to deal
7594          * with such bits
7595          */
7596         for (i = 0; i < ETH_ALEN; i++)
7597                 mac_addr[i] &= mac_addr_mask[i];
7598
7599         return 0;
7600 }
7601
7602 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7603 {
7604         ASSERT_WDEV_LOCK(wdev);
7605
7606         if (!cfg80211_beaconing_iface_active(wdev))
7607                 return true;
7608
7609         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7610                 return true;
7611
7612         return regulatory_pre_cac_allowed(wdev->wiphy);
7613 }
7614
7615 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7616                                     enum nl80211_ext_feature_index feat)
7617 {
7618         if (!(flags & flag))
7619                 return true;
7620         if (wiphy_ext_feature_isset(wiphy, feat))
7621                 return true;
7622         return false;
7623 }
7624
7625 static int
7626 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7627                          void *request, struct nlattr **attrs,
7628                          bool is_sched_scan)
7629 {
7630         u8 *mac_addr, *mac_addr_mask;
7631         u32 *flags;
7632         enum nl80211_feature_flags randomness_flag;
7633
7634         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7635                 return 0;
7636
7637         if (is_sched_scan) {
7638                 struct cfg80211_sched_scan_request *req = request;
7639
7640                 randomness_flag = wdev ?
7641                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7642                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7643                 flags = &req->flags;
7644                 mac_addr = req->mac_addr;
7645                 mac_addr_mask = req->mac_addr_mask;
7646         } else {
7647                 struct cfg80211_scan_request *req = request;
7648
7649                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7650                 flags = &req->flags;
7651                 mac_addr = req->mac_addr;
7652                 mac_addr_mask = req->mac_addr_mask;
7653         }
7654
7655         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7656
7657         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7658              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7659             !nl80211_check_scan_feat(wiphy, *flags,
7660                                      NL80211_SCAN_FLAG_LOW_SPAN,
7661                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7662             !nl80211_check_scan_feat(wiphy, *flags,
7663                                      NL80211_SCAN_FLAG_LOW_POWER,
7664                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7665             !nl80211_check_scan_feat(wiphy, *flags,
7666                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7667                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7668             !nl80211_check_scan_feat(wiphy, *flags,
7669                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7670                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7671             !nl80211_check_scan_feat(wiphy, *flags,
7672                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7673                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7674             !nl80211_check_scan_feat(wiphy, *flags,
7675                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7676                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7677             !nl80211_check_scan_feat(wiphy, *flags,
7678                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7679                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7680             !nl80211_check_scan_feat(wiphy, *flags,
7681                                      NL80211_SCAN_FLAG_RANDOM_SN,
7682                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7683             !nl80211_check_scan_feat(wiphy, *flags,
7684                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7685                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7686                 return -EOPNOTSUPP;
7687
7688         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7689                 int err;
7690
7691                 if (!(wiphy->features & randomness_flag) ||
7692                     (wdev && wdev->current_bss))
7693                         return -EOPNOTSUPP;
7694
7695                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7696                 if (err)
7697                         return err;
7698         }
7699
7700         return 0;
7701 }
7702
7703 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7704 {
7705         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7706         struct wireless_dev *wdev = info->user_ptr[1];
7707         struct cfg80211_scan_request *request;
7708         struct nlattr *attr;
7709         struct wiphy *wiphy;
7710         int err, tmp, n_ssids = 0, n_channels, i;
7711         size_t ie_len;
7712
7713         wiphy = &rdev->wiphy;
7714
7715         if (wdev->iftype == NL80211_IFTYPE_NAN)
7716                 return -EOPNOTSUPP;
7717
7718         if (!rdev->ops->scan)
7719                 return -EOPNOTSUPP;
7720
7721         if (rdev->scan_req || rdev->scan_msg) {
7722                 err = -EBUSY;
7723                 goto unlock;
7724         }
7725
7726         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7727                 n_channels = validate_scan_freqs(
7728                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7729                 if (!n_channels) {
7730                         err = -EINVAL;
7731                         goto unlock;
7732                 }
7733         } else {
7734                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7735         }
7736
7737         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7738                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7739                         n_ssids++;
7740
7741         if (n_ssids > wiphy->max_scan_ssids) {
7742                 err = -EINVAL;
7743                 goto unlock;
7744         }
7745
7746         if (info->attrs[NL80211_ATTR_IE])
7747                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7748         else
7749                 ie_len = 0;
7750
7751         if (ie_len > wiphy->max_scan_ie_len) {
7752                 err = -EINVAL;
7753                 goto unlock;
7754         }
7755
7756         request = kzalloc(sizeof(*request)
7757                         + sizeof(*request->ssids) * n_ssids
7758                         + sizeof(*request->channels) * n_channels
7759                         + ie_len, GFP_KERNEL);
7760         if (!request) {
7761                 err = -ENOMEM;
7762                 goto unlock;
7763         }
7764
7765         if (n_ssids)
7766                 request->ssids = (void *)&request->channels[n_channels];
7767         request->n_ssids = n_ssids;
7768         if (ie_len) {
7769                 if (n_ssids)
7770                         request->ie = (void *)(request->ssids + n_ssids);
7771                 else
7772                         request->ie = (void *)(request->channels + n_channels);
7773         }
7774
7775         i = 0;
7776         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7777                 /* user specified, bail out if channel not found */
7778                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7779                         struct ieee80211_channel *chan;
7780
7781                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7782
7783                         if (!chan) {
7784                                 err = -EINVAL;
7785                                 goto out_free;
7786                         }
7787
7788                         /* ignore disabled channels */
7789                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7790                                 continue;
7791
7792                         request->channels[i] = chan;
7793                         i++;
7794                 }
7795         } else {
7796                 enum nl80211_band band;
7797
7798                 /* all channels */
7799                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7800                         int j;
7801
7802                         if (!wiphy->bands[band])
7803                                 continue;
7804                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7805                                 struct ieee80211_channel *chan;
7806
7807                                 chan = &wiphy->bands[band]->channels[j];
7808
7809                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7810                                         continue;
7811
7812                                 request->channels[i] = chan;
7813                                 i++;
7814                         }
7815                 }
7816         }
7817
7818         if (!i) {
7819                 err = -EINVAL;
7820                 goto out_free;
7821         }
7822
7823         request->n_channels = i;
7824
7825         wdev_lock(wdev);
7826         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7827                 struct ieee80211_channel *chan;
7828
7829                 if (request->n_channels != 1) {
7830                         wdev_unlock(wdev);
7831                         err = -EBUSY;
7832                         goto out_free;
7833                 }
7834
7835                 chan = request->channels[0];
7836                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7837                         wdev_unlock(wdev);
7838                         err = -EBUSY;
7839                         goto out_free;
7840                 }
7841         }
7842         wdev_unlock(wdev);
7843
7844         i = 0;
7845         if (n_ssids) {
7846                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7847                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7848                                 err = -EINVAL;
7849                                 goto out_free;
7850                         }
7851                         request->ssids[i].ssid_len = nla_len(attr);
7852                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7853                         i++;
7854                 }
7855         }
7856
7857         if (info->attrs[NL80211_ATTR_IE]) {
7858                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7859                 memcpy((void *)request->ie,
7860                        nla_data(info->attrs[NL80211_ATTR_IE]),
7861                        request->ie_len);
7862         }
7863
7864         for (i = 0; i < NUM_NL80211_BANDS; i++)
7865                 if (wiphy->bands[i])
7866                         request->rates[i] =
7867                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7868
7869         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7870                 nla_for_each_nested(attr,
7871                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7872                                     tmp) {
7873                         enum nl80211_band band = nla_type(attr);
7874
7875                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7876                                 err = -EINVAL;
7877                                 goto out_free;
7878                         }
7879
7880                         if (!wiphy->bands[band])
7881                                 continue;
7882
7883                         err = ieee80211_get_ratemask(wiphy->bands[band],
7884                                                      nla_data(attr),
7885                                                      nla_len(attr),
7886                                                      &request->rates[band]);
7887                         if (err)
7888                                 goto out_free;
7889                 }
7890         }
7891
7892         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7893                 if (!wiphy_ext_feature_isset(wiphy,
7894                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7895                         err = -EOPNOTSUPP;
7896                         goto out_free;
7897                 }
7898
7899                 request->duration =
7900                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7901                 request->duration_mandatory =
7902                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7903         }
7904
7905         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7906                                        false);
7907         if (err)
7908                 goto out_free;
7909
7910         request->no_cck =
7911                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7912
7913         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7914          * BSSID to scan for. This was problematic because that same attribute
7915          * was already used for another purpose (local random MAC address). The
7916          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7917          * compatibility with older userspace components, also use the
7918          * NL80211_ATTR_MAC value here if it can be determined to be used for
7919          * the specific BSSID use case instead of the random MAC address
7920          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7921          */
7922         if (info->attrs[NL80211_ATTR_BSSID])
7923                 memcpy(request->bssid,
7924                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7925         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7926                  info->attrs[NL80211_ATTR_MAC])
7927                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7928                        ETH_ALEN);
7929         else
7930                 eth_broadcast_addr(request->bssid);
7931
7932         request->wdev = wdev;
7933         request->wiphy = &rdev->wiphy;
7934         request->scan_start = jiffies;
7935
7936         rdev->scan_req = request;
7937         err = rdev_scan(rdev, request);
7938
7939         if (!err) {
7940                 nl80211_send_scan_start(rdev, wdev);
7941                 if (wdev->netdev)
7942                         dev_hold(wdev->netdev);
7943         } else {
7944  out_free:
7945                 rdev->scan_req = NULL;
7946                 kfree(request);
7947         }
7948
7949  unlock:
7950         return err;
7951 }
7952
7953 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7954 {
7955         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7956         struct wireless_dev *wdev = info->user_ptr[1];
7957
7958         if (!rdev->ops->abort_scan)
7959                 return -EOPNOTSUPP;
7960
7961         if (rdev->scan_msg)
7962                 return 0;
7963
7964         if (!rdev->scan_req)
7965                 return -ENOENT;
7966
7967         rdev_abort_scan(rdev, wdev);
7968         return 0;
7969 }
7970
7971 static int
7972 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7973                                struct cfg80211_sched_scan_request *request,
7974                                struct nlattr **attrs)
7975 {
7976         int tmp, err, i = 0;
7977         struct nlattr *attr;
7978
7979         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7980                 u32 interval;
7981
7982                 /*
7983                  * If scan plans are not specified,
7984                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7985                  * case one scan plan will be set with the specified scan
7986                  * interval and infinite number of iterations.
7987                  */
7988                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7989                 if (!interval)
7990                         return -EINVAL;
7991
7992                 request->scan_plans[0].interval =
7993                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7994                 if (!request->scan_plans[0].interval)
7995                         return -EINVAL;
7996
7997                 if (request->scan_plans[0].interval >
7998                     wiphy->max_sched_scan_plan_interval)
7999                         request->scan_plans[0].interval =
8000                                 wiphy->max_sched_scan_plan_interval;
8001
8002                 return 0;
8003         }
8004
8005         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8006                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8007
8008                 if (WARN_ON(i >= n_plans))
8009                         return -EINVAL;
8010
8011                 err = nla_parse_nested_deprecated(plan,
8012                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8013                                                   attr, nl80211_plan_policy,
8014                                                   NULL);
8015                 if (err)
8016                         return err;
8017
8018                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8019                         return -EINVAL;
8020
8021                 request->scan_plans[i].interval =
8022                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8023                 if (!request->scan_plans[i].interval ||
8024                     request->scan_plans[i].interval >
8025                     wiphy->max_sched_scan_plan_interval)
8026                         return -EINVAL;
8027
8028                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8029                         request->scan_plans[i].iterations =
8030                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8031                         if (!request->scan_plans[i].iterations ||
8032                             (request->scan_plans[i].iterations >
8033                              wiphy->max_sched_scan_plan_iterations))
8034                                 return -EINVAL;
8035                 } else if (i < n_plans - 1) {
8036                         /*
8037                          * All scan plans but the last one must specify
8038                          * a finite number of iterations
8039                          */
8040                         return -EINVAL;
8041                 }
8042
8043                 i++;
8044         }
8045
8046         /*
8047          * The last scan plan must not specify the number of
8048          * iterations, it is supposed to run infinitely
8049          */
8050         if (request->scan_plans[n_plans - 1].iterations)
8051                 return  -EINVAL;
8052
8053         return 0;
8054 }
8055
8056 static int
8057 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8058                                        struct cfg80211_match_set *match_sets,
8059                                        struct nlattr *tb_band_rssi,
8060                                        s32 rssi_thold)
8061 {
8062         struct nlattr *attr;
8063         int i, tmp, ret = 0;
8064
8065         if (!wiphy_ext_feature_isset(wiphy,
8066                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8067                 if (tb_band_rssi)
8068                         ret = -EOPNOTSUPP;
8069                 else
8070                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8071                                 match_sets->per_band_rssi_thold[i] =
8072                                         NL80211_SCAN_RSSI_THOLD_OFF;
8073                 return ret;
8074         }
8075
8076         for (i = 0; i < NUM_NL80211_BANDS; i++)
8077                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8078
8079         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8080                 enum nl80211_band band = nla_type(attr);
8081
8082                 if (band < 0 || band >= NUM_NL80211_BANDS)
8083                         return -EINVAL;
8084
8085                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8086         }
8087
8088         return 0;
8089 }
8090
8091 static struct cfg80211_sched_scan_request *
8092 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8093                          struct nlattr **attrs, int max_match_sets)
8094 {
8095         struct cfg80211_sched_scan_request *request;
8096         struct nlattr *attr;
8097         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8098         enum nl80211_band band;
8099         size_t ie_len;
8100         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8101         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8102
8103         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8104                 n_channels = validate_scan_freqs(
8105                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8106                 if (!n_channels)
8107                         return ERR_PTR(-EINVAL);
8108         } else {
8109                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8110         }
8111
8112         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8113                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8114                                     tmp)
8115                         n_ssids++;
8116
8117         if (n_ssids > wiphy->max_sched_scan_ssids)
8118                 return ERR_PTR(-EINVAL);
8119
8120         /*
8121          * First, count the number of 'real' matchsets. Due to an issue with
8122          * the old implementation, matchsets containing only the RSSI attribute
8123          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8124          * RSSI for all matchsets, rather than their own matchset for reporting
8125          * all APs with a strong RSSI. This is needed to be compatible with
8126          * older userspace that treated a matchset with only the RSSI as the
8127          * global RSSI for all other matchsets - if there are other matchsets.
8128          */
8129         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8130                 nla_for_each_nested(attr,
8131                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8132                                     tmp) {
8133                         struct nlattr *rssi;
8134
8135                         err = nla_parse_nested_deprecated(tb,
8136                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8137                                                           attr,
8138                                                           nl80211_match_policy,
8139                                                           NULL);
8140                         if (err)
8141                                 return ERR_PTR(err);
8142
8143                         /* SSID and BSSID are mutually exclusive */
8144                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8145                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8146                                 return ERR_PTR(-EINVAL);
8147
8148                         /* add other standalone attributes here */
8149                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8150                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8151                                 n_match_sets++;
8152                                 continue;
8153                         }
8154                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8155                         if (rssi)
8156                                 default_match_rssi = nla_get_s32(rssi);
8157                 }
8158         }
8159
8160         /* However, if there's no other matchset, add the RSSI one */
8161         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8162                 n_match_sets = 1;
8163
8164         if (n_match_sets > max_match_sets)
8165                 return ERR_PTR(-EINVAL);
8166
8167         if (attrs[NL80211_ATTR_IE])
8168                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8169         else
8170                 ie_len = 0;
8171
8172         if (ie_len > wiphy->max_sched_scan_ie_len)
8173                 return ERR_PTR(-EINVAL);
8174
8175         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8176                 /*
8177                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8178                  * each scan plan already specifies its own interval
8179                  */
8180                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8181                         return ERR_PTR(-EINVAL);
8182
8183                 nla_for_each_nested(attr,
8184                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8185                         n_plans++;
8186         } else {
8187                 /*
8188                  * The scan interval attribute is kept for backward
8189                  * compatibility. If no scan plans are specified and sched scan
8190                  * interval is specified, one scan plan will be set with this
8191                  * scan interval and infinite number of iterations.
8192                  */
8193                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8194                         return ERR_PTR(-EINVAL);
8195
8196                 n_plans = 1;
8197         }
8198
8199         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8200                 return ERR_PTR(-EINVAL);
8201
8202         if (!wiphy_ext_feature_isset(
8203                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8204             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8205              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8206                 return ERR_PTR(-EINVAL);
8207
8208         request = kzalloc(sizeof(*request)
8209                         + sizeof(*request->ssids) * n_ssids
8210                         + sizeof(*request->match_sets) * n_match_sets
8211                         + sizeof(*request->scan_plans) * n_plans
8212                         + sizeof(*request->channels) * n_channels
8213                         + ie_len, GFP_KERNEL);
8214         if (!request)
8215                 return ERR_PTR(-ENOMEM);
8216
8217         if (n_ssids)
8218                 request->ssids = (void *)&request->channels[n_channels];
8219         request->n_ssids = n_ssids;
8220         if (ie_len) {
8221                 if (n_ssids)
8222                         request->ie = (void *)(request->ssids + n_ssids);
8223                 else
8224                         request->ie = (void *)(request->channels + n_channels);
8225         }
8226
8227         if (n_match_sets) {
8228                 if (request->ie)
8229                         request->match_sets = (void *)(request->ie + ie_len);
8230                 else if (n_ssids)
8231                         request->match_sets =
8232                                 (void *)(request->ssids + n_ssids);
8233                 else
8234                         request->match_sets =
8235                                 (void *)(request->channels + n_channels);
8236         }
8237         request->n_match_sets = n_match_sets;
8238
8239         if (n_match_sets)
8240                 request->scan_plans = (void *)(request->match_sets +
8241                                                n_match_sets);
8242         else if (request->ie)
8243                 request->scan_plans = (void *)(request->ie + ie_len);
8244         else if (n_ssids)
8245                 request->scan_plans = (void *)(request->ssids + n_ssids);
8246         else
8247                 request->scan_plans = (void *)(request->channels + n_channels);
8248
8249         request->n_scan_plans = n_plans;
8250
8251         i = 0;
8252         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8253                 /* user specified, bail out if channel not found */
8254                 nla_for_each_nested(attr,
8255                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8256                                     tmp) {
8257                         struct ieee80211_channel *chan;
8258
8259                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8260
8261                         if (!chan) {
8262                                 err = -EINVAL;
8263                                 goto out_free;
8264                         }
8265
8266                         /* ignore disabled channels */
8267                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8268                                 continue;
8269
8270                         request->channels[i] = chan;
8271                         i++;
8272                 }
8273         } else {
8274                 /* all channels */
8275                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8276                         int j;
8277
8278                         if (!wiphy->bands[band])
8279                                 continue;
8280                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8281                                 struct ieee80211_channel *chan;
8282
8283                                 chan = &wiphy->bands[band]->channels[j];
8284
8285                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8286                                         continue;
8287
8288                                 request->channels[i] = chan;
8289                                 i++;
8290                         }
8291                 }
8292         }
8293
8294         if (!i) {
8295                 err = -EINVAL;
8296                 goto out_free;
8297         }
8298
8299         request->n_channels = i;
8300
8301         i = 0;
8302         if (n_ssids) {
8303                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8304                                     tmp) {
8305                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8306                                 err = -EINVAL;
8307                                 goto out_free;
8308                         }
8309                         request->ssids[i].ssid_len = nla_len(attr);
8310                         memcpy(request->ssids[i].ssid, nla_data(attr),
8311                                nla_len(attr));
8312                         i++;
8313                 }
8314         }
8315
8316         i = 0;
8317         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8318                 nla_for_each_nested(attr,
8319                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8320                                     tmp) {
8321                         struct nlattr *ssid, *bssid, *rssi;
8322
8323                         err = nla_parse_nested_deprecated(tb,
8324                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8325                                                           attr,
8326                                                           nl80211_match_policy,
8327                                                           NULL);
8328                         if (err)
8329                                 goto out_free;
8330                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8331                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8332
8333                         if (!ssid && !bssid) {
8334                                 i++;
8335                                 continue;
8336                         }
8337
8338                         if (WARN_ON(i >= n_match_sets)) {
8339                                 /* this indicates a programming error,
8340                                  * the loop above should have verified
8341                                  * things properly
8342                                  */
8343                                 err = -EINVAL;
8344                                 goto out_free;
8345                         }
8346
8347                         if (ssid) {
8348                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8349                                         err = -EINVAL;
8350                                         goto out_free;
8351                                 }
8352                                 memcpy(request->match_sets[i].ssid.ssid,
8353                                        nla_data(ssid), nla_len(ssid));
8354                                 request->match_sets[i].ssid.ssid_len =
8355                                         nla_len(ssid);
8356                         }
8357                         if (bssid) {
8358                                 if (nla_len(bssid) != ETH_ALEN) {
8359                                         err = -EINVAL;
8360                                         goto out_free;
8361                                 }
8362                                 memcpy(request->match_sets[i].bssid,
8363                                        nla_data(bssid), ETH_ALEN);
8364                         }
8365
8366                         /* special attribute - old implementation w/a */
8367                         request->match_sets[i].rssi_thold = default_match_rssi;
8368                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8369                         if (rssi)
8370                                 request->match_sets[i].rssi_thold =
8371                                         nla_get_s32(rssi);
8372
8373                         /* Parse per band RSSI attribute */
8374                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8375                                 &request->match_sets[i],
8376                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8377                                 request->match_sets[i].rssi_thold);
8378                         if (err)
8379                                 goto out_free;
8380
8381                         i++;
8382                 }
8383
8384                 /* there was no other matchset, so the RSSI one is alone */
8385                 if (i == 0 && n_match_sets)
8386                         request->match_sets[0].rssi_thold = default_match_rssi;
8387
8388                 request->min_rssi_thold = INT_MAX;
8389                 for (i = 0; i < n_match_sets; i++)
8390                         request->min_rssi_thold =
8391                                 min(request->match_sets[i].rssi_thold,
8392                                     request->min_rssi_thold);
8393         } else {
8394                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8395         }
8396
8397         if (ie_len) {
8398                 request->ie_len = ie_len;
8399                 memcpy((void *)request->ie,
8400                        nla_data(attrs[NL80211_ATTR_IE]),
8401                        request->ie_len);
8402         }
8403
8404         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8405         if (err)
8406                 goto out_free;
8407
8408         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8409                 request->delay =
8410                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8411
8412         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8413                 request->relative_rssi = nla_get_s8(
8414                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8415                 request->relative_rssi_set = true;
8416         }
8417
8418         if (request->relative_rssi_set &&
8419             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8420                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8421
8422                 rssi_adjust = nla_data(
8423                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8424                 request->rssi_adjust.band = rssi_adjust->band;
8425                 request->rssi_adjust.delta = rssi_adjust->delta;
8426                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8427                         err = -EINVAL;
8428                         goto out_free;
8429                 }
8430         }
8431
8432         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8433         if (err)
8434                 goto out_free;
8435
8436         request->scan_start = jiffies;
8437
8438         return request;
8439
8440 out_free:
8441         kfree(request);
8442         return ERR_PTR(err);
8443 }
8444
8445 static int nl80211_start_sched_scan(struct sk_buff *skb,
8446                                     struct genl_info *info)
8447 {
8448         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8449         struct net_device *dev = info->user_ptr[1];
8450         struct wireless_dev *wdev = dev->ieee80211_ptr;
8451         struct cfg80211_sched_scan_request *sched_scan_req;
8452         bool want_multi;
8453         int err;
8454
8455         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8456                 return -EOPNOTSUPP;
8457
8458         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8459         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8460         if (err)
8461                 return err;
8462
8463         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8464                                                   info->attrs,
8465                                                   rdev->wiphy.max_match_sets);
8466
8467         err = PTR_ERR_OR_ZERO(sched_scan_req);
8468         if (err)
8469                 goto out_err;
8470
8471         /* leave request id zero for legacy request
8472          * or if driver does not support multi-scheduled scan
8473          */
8474         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8475                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8476
8477         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8478         if (err)
8479                 goto out_free;
8480
8481         sched_scan_req->dev = dev;
8482         sched_scan_req->wiphy = &rdev->wiphy;
8483
8484         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8485                 sched_scan_req->owner_nlportid = info->snd_portid;
8486
8487         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8488
8489         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8490         return 0;
8491
8492 out_free:
8493         kfree(sched_scan_req);
8494 out_err:
8495         return err;
8496 }
8497
8498 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8499                                    struct genl_info *info)
8500 {
8501         struct cfg80211_sched_scan_request *req;
8502         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8503         u64 cookie;
8504
8505         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8506                 return -EOPNOTSUPP;
8507
8508         if (info->attrs[NL80211_ATTR_COOKIE]) {
8509                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8510                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8511         }
8512
8513         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8514                                      struct cfg80211_sched_scan_request,
8515                                      list);
8516         if (!req || req->reqid ||
8517             (req->owner_nlportid &&
8518              req->owner_nlportid != info->snd_portid))
8519                 return -ENOENT;
8520
8521         return cfg80211_stop_sched_scan_req(rdev, req, false);
8522 }
8523
8524 static int nl80211_start_radar_detection(struct sk_buff *skb,
8525                                          struct genl_info *info)
8526 {
8527         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8528         struct net_device *dev = info->user_ptr[1];
8529         struct wireless_dev *wdev = dev->ieee80211_ptr;
8530         struct wiphy *wiphy = wdev->wiphy;
8531         struct cfg80211_chan_def chandef;
8532         enum nl80211_dfs_regions dfs_region;
8533         unsigned int cac_time_ms;
8534         int err;
8535
8536         dfs_region = reg_get_dfs_region(wiphy);
8537         if (dfs_region == NL80211_DFS_UNSET)
8538                 return -EINVAL;
8539
8540         err = nl80211_parse_chandef(rdev, info, &chandef);
8541         if (err)
8542                 return err;
8543
8544         if (netif_carrier_ok(dev))
8545                 return -EBUSY;
8546
8547         if (wdev->cac_started)
8548                 return -EBUSY;
8549
8550         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8551         if (err < 0)
8552                 return err;
8553
8554         if (err == 0)
8555                 return -EINVAL;
8556
8557         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8558                 return -EINVAL;
8559
8560         /* CAC start is offloaded to HW and can't be started manually */
8561         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8562                 return -EOPNOTSUPP;
8563
8564         if (!rdev->ops->start_radar_detection)
8565                 return -EOPNOTSUPP;
8566
8567         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8568         if (WARN_ON(!cac_time_ms))
8569                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8570
8571         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8572         if (!err) {
8573                 wdev->chandef = chandef;
8574                 wdev->cac_started = true;
8575                 wdev->cac_start_time = jiffies;
8576                 wdev->cac_time_ms = cac_time_ms;
8577         }
8578         return err;
8579 }
8580
8581 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8582                                           struct genl_info *info)
8583 {
8584         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8585         struct net_device *dev = info->user_ptr[1];
8586         struct wireless_dev *wdev = dev->ieee80211_ptr;
8587         struct wiphy *wiphy = wdev->wiphy;
8588         struct cfg80211_chan_def chandef;
8589         enum nl80211_dfs_regions dfs_region;
8590         int err;
8591
8592         dfs_region = reg_get_dfs_region(wiphy);
8593         if (dfs_region == NL80211_DFS_UNSET) {
8594                 GENL_SET_ERR_MSG(info,
8595                                  "DFS Region is not set. Unexpected Radar indication");
8596                 return -EINVAL;
8597         }
8598
8599         err = nl80211_parse_chandef(rdev, info, &chandef);
8600         if (err) {
8601                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8602                 return err;
8603         }
8604
8605         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8606         if (err < 0) {
8607                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8608                 return err;
8609         }
8610
8611         if (err == 0) {
8612                 GENL_SET_ERR_MSG(info,
8613                                  "Unexpected Radar indication for chandef/iftype");
8614                 return -EINVAL;
8615         }
8616
8617         /* Do not process this notification if radar is already detected
8618          * by kernel on this channel, and return success.
8619          */
8620         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8621                 return 0;
8622
8623         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8624
8625         cfg80211_sched_dfs_chan_update(rdev);
8626
8627         rdev->radar_chandef = chandef;
8628
8629         /* Propagate this notification to other radios as well */
8630         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8631
8632         return 0;
8633 }
8634
8635 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8636 {
8637         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8638         struct net_device *dev = info->user_ptr[1];
8639         struct wireless_dev *wdev = dev->ieee80211_ptr;
8640         struct cfg80211_csa_settings params;
8641         /* csa_attrs is defined static to avoid waste of stack size - this
8642          * function is called under RTNL lock, so this should not be a problem.
8643          */
8644         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8645         int err;
8646         bool need_new_beacon = false;
8647         bool need_handle_dfs_flag = true;
8648         int len, i;
8649         u32 cs_count;
8650
8651         if (!rdev->ops->channel_switch ||
8652             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8653                 return -EOPNOTSUPP;
8654
8655         switch (dev->ieee80211_ptr->iftype) {
8656         case NL80211_IFTYPE_AP:
8657         case NL80211_IFTYPE_P2P_GO:
8658                 need_new_beacon = true;
8659                 /* For all modes except AP the handle_dfs flag needs to be
8660                  * supplied to tell the kernel that userspace will handle radar
8661                  * events when they happen. Otherwise a switch to a channel
8662                  * requiring DFS will be rejected.
8663                  */
8664                 need_handle_dfs_flag = false;
8665
8666                 /* useless if AP is not running */
8667                 if (!wdev->beacon_interval)
8668                         return -ENOTCONN;
8669                 break;
8670         case NL80211_IFTYPE_ADHOC:
8671                 if (!wdev->ssid_len)
8672                         return -ENOTCONN;
8673                 break;
8674         case NL80211_IFTYPE_MESH_POINT:
8675                 if (!wdev->mesh_id_len)
8676                         return -ENOTCONN;
8677                 break;
8678         default:
8679                 return -EOPNOTSUPP;
8680         }
8681
8682         memset(&params, 0, sizeof(params));
8683         params.beacon_csa.ftm_responder = -1;
8684
8685         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8686             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8687                 return -EINVAL;
8688
8689         /* only important for AP, IBSS and mesh create IEs internally */
8690         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8691                 return -EINVAL;
8692
8693         /* Even though the attribute is u32, the specification says
8694          * u8, so let's make sure we don't overflow.
8695          */
8696         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8697         if (cs_count > 255)
8698                 return -EINVAL;
8699
8700         params.count = cs_count;
8701
8702         if (!need_new_beacon)
8703                 goto skip_beacons;
8704
8705         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8706         if (err)
8707                 return err;
8708
8709         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8710                                           info->attrs[NL80211_ATTR_CSA_IES],
8711                                           nl80211_policy, info->extack);
8712         if (err)
8713                 return err;
8714
8715         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8716         if (err)
8717                 return err;
8718
8719         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8720                 return -EINVAL;
8721
8722         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8723         if (!len || (len % sizeof(u16)))
8724                 return -EINVAL;
8725
8726         params.n_counter_offsets_beacon = len / sizeof(u16);
8727         if (rdev->wiphy.max_num_csa_counters &&
8728             (params.n_counter_offsets_beacon >
8729              rdev->wiphy.max_num_csa_counters))
8730                 return -EINVAL;
8731
8732         params.counter_offsets_beacon =
8733                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8734
8735         /* sanity checks - counters should fit and be the same */
8736         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8737                 u16 offset = params.counter_offsets_beacon[i];
8738
8739                 if (offset >= params.beacon_csa.tail_len)
8740                         return -EINVAL;
8741
8742                 if (params.beacon_csa.tail[offset] != params.count)
8743                         return -EINVAL;
8744         }
8745
8746         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8747                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8748                 if (!len || (len % sizeof(u16)))
8749                         return -EINVAL;
8750
8751                 params.n_counter_offsets_presp = len / sizeof(u16);
8752                 if (rdev->wiphy.max_num_csa_counters &&
8753                     (params.n_counter_offsets_presp >
8754                      rdev->wiphy.max_num_csa_counters))
8755                         return -EINVAL;
8756
8757                 params.counter_offsets_presp =
8758                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8759
8760                 /* sanity checks - counters should fit and be the same */
8761                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8762                         u16 offset = params.counter_offsets_presp[i];
8763
8764                         if (offset >= params.beacon_csa.probe_resp_len)
8765                                 return -EINVAL;
8766
8767                         if (params.beacon_csa.probe_resp[offset] !=
8768                             params.count)
8769                                 return -EINVAL;
8770                 }
8771         }
8772
8773 skip_beacons:
8774         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8775         if (err)
8776                 return err;
8777
8778         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8779                                            wdev->iftype))
8780                 return -EINVAL;
8781
8782         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8783                                             &params.chandef,
8784                                             wdev->iftype);
8785         if (err < 0)
8786                 return err;
8787
8788         if (err > 0) {
8789                 params.radar_required = true;
8790                 if (need_handle_dfs_flag &&
8791                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8792                         return -EINVAL;
8793                 }
8794         }
8795
8796         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8797                 params.block_tx = true;
8798
8799         wdev_lock(wdev);
8800         err = rdev_channel_switch(rdev, dev, &params);
8801         wdev_unlock(wdev);
8802
8803         return err;
8804 }
8805
8806 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8807                             u32 seq, int flags,
8808                             struct cfg80211_registered_device *rdev,
8809                             struct wireless_dev *wdev,
8810                             struct cfg80211_internal_bss *intbss)
8811 {
8812         struct cfg80211_bss *res = &intbss->pub;
8813         const struct cfg80211_bss_ies *ies;
8814         void *hdr;
8815         struct nlattr *bss;
8816
8817         ASSERT_WDEV_LOCK(wdev);
8818
8819         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8820                              NL80211_CMD_NEW_SCAN_RESULTS);
8821         if (!hdr)
8822                 return -1;
8823
8824         genl_dump_check_consistent(cb, hdr);
8825
8826         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8827                 goto nla_put_failure;
8828         if (wdev->netdev &&
8829             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8830                 goto nla_put_failure;
8831         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8832                               NL80211_ATTR_PAD))
8833                 goto nla_put_failure;
8834
8835         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8836         if (!bss)
8837                 goto nla_put_failure;
8838         if ((!is_zero_ether_addr(res->bssid) &&
8839              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8840                 goto nla_put_failure;
8841
8842         rcu_read_lock();
8843         /* indicate whether we have probe response data or not */
8844         if (rcu_access_pointer(res->proberesp_ies) &&
8845             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8846                 goto fail_unlock_rcu;
8847
8848         /* this pointer prefers to be pointed to probe response data
8849          * but is always valid
8850          */
8851         ies = rcu_dereference(res->ies);
8852         if (ies) {
8853                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8854                                       NL80211_BSS_PAD))
8855                         goto fail_unlock_rcu;
8856                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8857                                         ies->len, ies->data))
8858                         goto fail_unlock_rcu;
8859         }
8860
8861         /* and this pointer is always (unless driver didn't know) beacon data */
8862         ies = rcu_dereference(res->beacon_ies);
8863         if (ies && ies->from_beacon) {
8864                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8865                                       NL80211_BSS_PAD))
8866                         goto fail_unlock_rcu;
8867                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8868                                         ies->len, ies->data))
8869                         goto fail_unlock_rcu;
8870         }
8871         rcu_read_unlock();
8872
8873         if (res->beacon_interval &&
8874             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8875                 goto nla_put_failure;
8876         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8877             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8878             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8879             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8880                         jiffies_to_msecs(jiffies - intbss->ts)))
8881                 goto nla_put_failure;
8882
8883         if (intbss->parent_tsf &&
8884             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8885                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8886              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8887                      intbss->parent_bssid)))
8888                 goto nla_put_failure;
8889
8890         if (intbss->ts_boottime &&
8891             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8892                               intbss->ts_boottime, NL80211_BSS_PAD))
8893                 goto nla_put_failure;
8894
8895         if (!nl80211_put_signal(msg, intbss->pub.chains,
8896                                 intbss->pub.chain_signal,
8897                                 NL80211_BSS_CHAIN_SIGNAL))
8898                 goto nla_put_failure;
8899
8900         switch (rdev->wiphy.signal_type) {
8901         case CFG80211_SIGNAL_TYPE_MBM:
8902                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8903                         goto nla_put_failure;
8904                 break;
8905         case CFG80211_SIGNAL_TYPE_UNSPEC:
8906                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8907                         goto nla_put_failure;
8908                 break;
8909         default:
8910                 break;
8911         }
8912
8913         switch (wdev->iftype) {
8914         case NL80211_IFTYPE_P2P_CLIENT:
8915         case NL80211_IFTYPE_STATION:
8916                 if (intbss == wdev->current_bss &&
8917                     nla_put_u32(msg, NL80211_BSS_STATUS,
8918                                 NL80211_BSS_STATUS_ASSOCIATED))
8919                         goto nla_put_failure;
8920                 break;
8921         case NL80211_IFTYPE_ADHOC:
8922                 if (intbss == wdev->current_bss &&
8923                     nla_put_u32(msg, NL80211_BSS_STATUS,
8924                                 NL80211_BSS_STATUS_IBSS_JOINED))
8925                         goto nla_put_failure;
8926                 break;
8927         default:
8928                 break;
8929         }
8930
8931         nla_nest_end(msg, bss);
8932
8933         genlmsg_end(msg, hdr);
8934         return 0;
8935
8936  fail_unlock_rcu:
8937         rcu_read_unlock();
8938  nla_put_failure:
8939         genlmsg_cancel(msg, hdr);
8940         return -EMSGSIZE;
8941 }
8942
8943 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8944 {
8945         struct cfg80211_registered_device *rdev;
8946         struct cfg80211_internal_bss *scan;
8947         struct wireless_dev *wdev;
8948         int start = cb->args[2], idx = 0;
8949         int err;
8950
8951         rtnl_lock();
8952         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8953         if (err) {
8954                 rtnl_unlock();
8955                 return err;
8956         }
8957
8958         wdev_lock(wdev);
8959         spin_lock_bh(&rdev->bss_lock);
8960
8961         /*
8962          * dump_scan will be called multiple times to break up the scan results
8963          * into multiple messages.  It is unlikely that any more bss-es will be
8964          * expired after the first call, so only call only call this on the
8965          * first dump_scan invocation.
8966          */
8967         if (start == 0)
8968                 cfg80211_bss_expire(rdev);
8969
8970         cb->seq = rdev->bss_generation;
8971
8972         list_for_each_entry(scan, &rdev->bss_list, list) {
8973                 if (++idx <= start)
8974                         continue;
8975                 if (nl80211_send_bss(skb, cb,
8976                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8977                                 rdev, wdev, scan) < 0) {
8978                         idx--;
8979                         break;
8980                 }
8981         }
8982
8983         spin_unlock_bh(&rdev->bss_lock);
8984         wdev_unlock(wdev);
8985
8986         cb->args[2] = idx;
8987         rtnl_unlock();
8988
8989         return skb->len;
8990 }
8991
8992 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8993                                int flags, struct net_device *dev,
8994                                bool allow_radio_stats,
8995                                struct survey_info *survey)
8996 {
8997         void *hdr;
8998         struct nlattr *infoattr;
8999
9000         /* skip radio stats if userspace didn't request them */
9001         if (!survey->channel && !allow_radio_stats)
9002                 return 0;
9003
9004         hdr = nl80211hdr_put(msg, portid, seq, flags,
9005                              NL80211_CMD_NEW_SURVEY_RESULTS);
9006         if (!hdr)
9007                 return -ENOMEM;
9008
9009         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9010                 goto nla_put_failure;
9011
9012         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9013         if (!infoattr)
9014                 goto nla_put_failure;
9015
9016         if (survey->channel &&
9017             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9018                         survey->channel->center_freq))
9019                 goto nla_put_failure;
9020
9021         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9022             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9023                 goto nla_put_failure;
9024         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9025             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9026                 goto nla_put_failure;
9027         if ((survey->filled & SURVEY_INFO_TIME) &&
9028             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9029                         survey->time, NL80211_SURVEY_INFO_PAD))
9030                 goto nla_put_failure;
9031         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9032             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9033                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9034                 goto nla_put_failure;
9035         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9036             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9037                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9038                 goto nla_put_failure;
9039         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9040             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9041                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9042                 goto nla_put_failure;
9043         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9044             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9045                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9046                 goto nla_put_failure;
9047         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9048             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9049                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9050                 goto nla_put_failure;
9051         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9052             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9053                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9054                 goto nla_put_failure;
9055
9056         nla_nest_end(msg, infoattr);
9057
9058         genlmsg_end(msg, hdr);
9059         return 0;
9060
9061  nla_put_failure:
9062         genlmsg_cancel(msg, hdr);
9063         return -EMSGSIZE;
9064 }
9065
9066 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9067 {
9068         struct nlattr **attrbuf;
9069         struct survey_info survey;
9070         struct cfg80211_registered_device *rdev;
9071         struct wireless_dev *wdev;
9072         int survey_idx = cb->args[2];
9073         int res;
9074         bool radio_stats;
9075
9076         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9077         if (!attrbuf)
9078                 return -ENOMEM;
9079
9080         rtnl_lock();
9081         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9082         if (res)
9083                 goto out_err;
9084
9085         /* prepare_wdev_dump parsed the attributes */
9086         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9087
9088         if (!wdev->netdev) {
9089                 res = -EINVAL;
9090                 goto out_err;
9091         }
9092
9093         if (!rdev->ops->dump_survey) {
9094                 res = -EOPNOTSUPP;
9095                 goto out_err;
9096         }
9097
9098         while (1) {
9099                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9100                 if (res == -ENOENT)
9101                         break;
9102                 if (res)
9103                         goto out_err;
9104
9105                 /* don't send disabled channels, but do send non-channel data */
9106                 if (survey.channel &&
9107                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9108                         survey_idx++;
9109                         continue;
9110                 }
9111
9112                 if (nl80211_send_survey(skb,
9113                                 NETLINK_CB(cb->skb).portid,
9114                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9115                                 wdev->netdev, radio_stats, &survey) < 0)
9116                         goto out;
9117                 survey_idx++;
9118         }
9119
9120  out:
9121         cb->args[2] = survey_idx;
9122         res = skb->len;
9123  out_err:
9124         kfree(attrbuf);
9125         rtnl_unlock();
9126         return res;
9127 }
9128
9129 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9130 {
9131         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9132                                   NL80211_WPA_VERSION_2 |
9133                                   NL80211_WPA_VERSION_3));
9134 }
9135
9136 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9137 {
9138         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9139         struct net_device *dev = info->user_ptr[1];
9140         struct ieee80211_channel *chan;
9141         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9142         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9143         enum nl80211_auth_type auth_type;
9144         struct key_parse key;
9145         bool local_state_change;
9146
9147         if (!info->attrs[NL80211_ATTR_MAC])
9148                 return -EINVAL;
9149
9150         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9151                 return -EINVAL;
9152
9153         if (!info->attrs[NL80211_ATTR_SSID])
9154                 return -EINVAL;
9155
9156         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9157                 return -EINVAL;
9158
9159         err = nl80211_parse_key(info, &key);
9160         if (err)
9161                 return err;
9162
9163         if (key.idx >= 0) {
9164                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9165                         return -EINVAL;
9166                 if (!key.p.key || !key.p.key_len)
9167                         return -EINVAL;
9168                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9169                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9170                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9171                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9172                         return -EINVAL;
9173                 if (key.idx > 3)
9174                         return -EINVAL;
9175         } else {
9176                 key.p.key_len = 0;
9177                 key.p.key = NULL;
9178         }
9179
9180         if (key.idx >= 0) {
9181                 int i;
9182                 bool ok = false;
9183
9184                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9185                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9186                                 ok = true;
9187                                 break;
9188                         }
9189                 }
9190                 if (!ok)
9191                         return -EINVAL;
9192         }
9193
9194         if (!rdev->ops->auth)
9195                 return -EOPNOTSUPP;
9196
9197         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9198             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9199                 return -EOPNOTSUPP;
9200
9201         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9202         chan = nl80211_get_valid_chan(&rdev->wiphy,
9203                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9204         if (!chan)
9205                 return -EINVAL;
9206
9207         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9208         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9209
9210         if (info->attrs[NL80211_ATTR_IE]) {
9211                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9212                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9213         }
9214
9215         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9216         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9217                 return -EINVAL;
9218
9219         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9220              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9221              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9222              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9223             !info->attrs[NL80211_ATTR_AUTH_DATA])
9224                 return -EINVAL;
9225
9226         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9227                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9228                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9229                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9230                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9231                         return -EINVAL;
9232                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9233                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9234                 /* need to include at least Auth Transaction and Status Code */
9235                 if (auth_data_len < 4)
9236                         return -EINVAL;
9237         }
9238
9239         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9240
9241         /*
9242          * Since we no longer track auth state, ignore
9243          * requests to only change local state.
9244          */
9245         if (local_state_change)
9246                 return 0;
9247
9248         wdev_lock(dev->ieee80211_ptr);
9249         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9250                                  ssid, ssid_len, ie, ie_len,
9251                                  key.p.key, key.p.key_len, key.idx,
9252                                  auth_data, auth_data_len);
9253         wdev_unlock(dev->ieee80211_ptr);
9254         return err;
9255 }
9256
9257 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9258                                      struct genl_info *info)
9259 {
9260         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9261                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9262                 return -EINVAL;
9263         }
9264
9265         if (!rdev->ops->tx_control_port ||
9266             !wiphy_ext_feature_isset(&rdev->wiphy,
9267                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9268                 return -EOPNOTSUPP;
9269
9270         return 0;
9271 }
9272
9273 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9274                                    struct genl_info *info,
9275                                    struct cfg80211_crypto_settings *settings,
9276                                    int cipher_limit)
9277 {
9278         memset(settings, 0, sizeof(*settings));
9279
9280         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9281
9282         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9283                 u16 proto;
9284
9285                 proto = nla_get_u16(
9286                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9287                 settings->control_port_ethertype = cpu_to_be16(proto);
9288                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9289                     proto != ETH_P_PAE)
9290                         return -EINVAL;
9291                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9292                         settings->control_port_no_encrypt = true;
9293         } else
9294                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9295
9296         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9297                 int r = validate_pae_over_nl80211(rdev, info);
9298
9299                 if (r < 0)
9300                         return r;
9301
9302                 settings->control_port_over_nl80211 = true;
9303         }
9304
9305         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9306                 void *data;
9307                 int len, i;
9308
9309                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9310                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9311                 settings->n_ciphers_pairwise = len / sizeof(u32);
9312
9313                 if (len % sizeof(u32))
9314                         return -EINVAL;
9315
9316                 if (settings->n_ciphers_pairwise > cipher_limit)
9317                         return -EINVAL;
9318
9319                 memcpy(settings->ciphers_pairwise, data, len);
9320
9321                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9322                         if (!cfg80211_supported_cipher_suite(
9323                                         &rdev->wiphy,
9324                                         settings->ciphers_pairwise[i]))
9325                                 return -EINVAL;
9326         }
9327
9328         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9329                 settings->cipher_group =
9330                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9331                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9332                                                      settings->cipher_group))
9333                         return -EINVAL;
9334         }
9335
9336         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9337                 settings->wpa_versions =
9338                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9339                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9340                         return -EINVAL;
9341         }
9342
9343         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9344                 void *data;
9345                 int len;
9346
9347                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9348                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9349                 settings->n_akm_suites = len / sizeof(u32);
9350
9351                 if (len % sizeof(u32))
9352                         return -EINVAL;
9353
9354                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9355                         return -EINVAL;
9356
9357                 memcpy(settings->akm_suites, data, len);
9358         }
9359
9360         if (info->attrs[NL80211_ATTR_PMK]) {
9361                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9362                         return -EINVAL;
9363                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9364                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9365                         return -EINVAL;
9366                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9367         }
9368
9369         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9370                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9371                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9372                         return -EINVAL;
9373                 settings->sae_pwd =
9374                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9375                 settings->sae_pwd_len =
9376                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9377         }
9378
9379         return 0;
9380 }
9381
9382 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9383 {
9384         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9385         struct net_device *dev = info->user_ptr[1];
9386         struct ieee80211_channel *chan;
9387         struct cfg80211_assoc_request req = {};
9388         const u8 *bssid, *ssid;
9389         int err, ssid_len = 0;
9390
9391         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9392             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9393                 return -EPERM;
9394
9395         if (!info->attrs[NL80211_ATTR_MAC] ||
9396             !info->attrs[NL80211_ATTR_SSID] ||
9397             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9398                 return -EINVAL;
9399
9400         if (!rdev->ops->assoc)
9401                 return -EOPNOTSUPP;
9402
9403         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9404             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9405                 return -EOPNOTSUPP;
9406
9407         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9408
9409         chan = nl80211_get_valid_chan(&rdev->wiphy,
9410                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9411         if (!chan)
9412                 return -EINVAL;
9413
9414         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9415         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9416
9417         if (info->attrs[NL80211_ATTR_IE]) {
9418                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9419                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9420         }
9421
9422         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9423                 enum nl80211_mfp mfp =
9424                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9425                 if (mfp == NL80211_MFP_REQUIRED)
9426                         req.use_mfp = true;
9427                 else if (mfp != NL80211_MFP_NO)
9428                         return -EINVAL;
9429         }
9430
9431         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9432                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9433
9434         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9435                 req.flags |= ASSOC_REQ_DISABLE_HT;
9436
9437         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9438                 memcpy(&req.ht_capa_mask,
9439                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9440                        sizeof(req.ht_capa_mask));
9441
9442         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9443                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9444                         return -EINVAL;
9445                 memcpy(&req.ht_capa,
9446                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9447                        sizeof(req.ht_capa));
9448         }
9449
9450         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9451                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9452
9453         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9454                 memcpy(&req.vht_capa_mask,
9455                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9456                        sizeof(req.vht_capa_mask));
9457
9458         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9459                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9460                         return -EINVAL;
9461                 memcpy(&req.vht_capa,
9462                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9463                        sizeof(req.vht_capa));
9464         }
9465
9466         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9467                 if (!((rdev->wiphy.features &
9468                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9469                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9470                     !wiphy_ext_feature_isset(&rdev->wiphy,
9471                                              NL80211_EXT_FEATURE_RRM))
9472                         return -EINVAL;
9473                 req.flags |= ASSOC_REQ_USE_RRM;
9474         }
9475
9476         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9477                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9478                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9479                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9480                         return -EINVAL;
9481                 req.fils_nonces =
9482                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9483         }
9484
9485         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9486         if (!err) {
9487                 wdev_lock(dev->ieee80211_ptr);
9488
9489                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9490                                           ssid, ssid_len, &req);
9491
9492                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9493                         dev->ieee80211_ptr->conn_owner_nlportid =
9494                                 info->snd_portid;
9495                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9496                                bssid, ETH_ALEN);
9497                 }
9498
9499                 wdev_unlock(dev->ieee80211_ptr);
9500         }
9501
9502         return err;
9503 }
9504
9505 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9506 {
9507         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9508         struct net_device *dev = info->user_ptr[1];
9509         const u8 *ie = NULL, *bssid;
9510         int ie_len = 0, err;
9511         u16 reason_code;
9512         bool local_state_change;
9513
9514         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9515             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9516                 return -EPERM;
9517
9518         if (!info->attrs[NL80211_ATTR_MAC])
9519                 return -EINVAL;
9520
9521         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9522                 return -EINVAL;
9523
9524         if (!rdev->ops->deauth)
9525                 return -EOPNOTSUPP;
9526
9527         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9528             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9529                 return -EOPNOTSUPP;
9530
9531         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9532
9533         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9534         if (reason_code == 0) {
9535                 /* Reason Code 0 is reserved */
9536                 return -EINVAL;
9537         }
9538
9539         if (info->attrs[NL80211_ATTR_IE]) {
9540                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9541                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9542         }
9543
9544         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9545
9546         wdev_lock(dev->ieee80211_ptr);
9547         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9548                                    local_state_change);
9549         wdev_unlock(dev->ieee80211_ptr);
9550         return err;
9551 }
9552
9553 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9554 {
9555         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9556         struct net_device *dev = info->user_ptr[1];
9557         const u8 *ie = NULL, *bssid;
9558         int ie_len = 0, err;
9559         u16 reason_code;
9560         bool local_state_change;
9561
9562         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9563             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9564                 return -EPERM;
9565
9566         if (!info->attrs[NL80211_ATTR_MAC])
9567                 return -EINVAL;
9568
9569         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9570                 return -EINVAL;
9571
9572         if (!rdev->ops->disassoc)
9573                 return -EOPNOTSUPP;
9574
9575         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9576             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9577                 return -EOPNOTSUPP;
9578
9579         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9580
9581         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9582         if (reason_code == 0) {
9583                 /* Reason Code 0 is reserved */
9584                 return -EINVAL;
9585         }
9586
9587         if (info->attrs[NL80211_ATTR_IE]) {
9588                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9589                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9590         }
9591
9592         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9593
9594         wdev_lock(dev->ieee80211_ptr);
9595         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9596                                      local_state_change);
9597         wdev_unlock(dev->ieee80211_ptr);
9598         return err;
9599 }
9600
9601 static bool
9602 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9603                          int mcast_rate[NUM_NL80211_BANDS],
9604                          int rateval)
9605 {
9606         struct wiphy *wiphy = &rdev->wiphy;
9607         bool found = false;
9608         int band, i;
9609
9610         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9611                 struct ieee80211_supported_band *sband;
9612
9613                 sband = wiphy->bands[band];
9614                 if (!sband)
9615                         continue;
9616
9617                 for (i = 0; i < sband->n_bitrates; i++) {
9618                         if (sband->bitrates[i].bitrate == rateval) {
9619                                 mcast_rate[band] = i + 1;
9620                                 found = true;
9621                                 break;
9622                         }
9623                 }
9624         }
9625
9626         return found;
9627 }
9628
9629 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9630 {
9631         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9632         struct net_device *dev = info->user_ptr[1];
9633         struct cfg80211_ibss_params ibss;
9634         struct wiphy *wiphy;
9635         struct cfg80211_cached_keys *connkeys = NULL;
9636         int err;
9637
9638         memset(&ibss, 0, sizeof(ibss));
9639
9640         if (!info->attrs[NL80211_ATTR_SSID] ||
9641             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9642                 return -EINVAL;
9643
9644         ibss.beacon_interval = 100;
9645
9646         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9647                 ibss.beacon_interval =
9648                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9649
9650         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9651                                            ibss.beacon_interval);
9652         if (err)
9653                 return err;
9654
9655         if (!rdev->ops->join_ibss)
9656                 return -EOPNOTSUPP;
9657
9658         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9659                 return -EOPNOTSUPP;
9660
9661         wiphy = &rdev->wiphy;
9662
9663         if (info->attrs[NL80211_ATTR_MAC]) {
9664                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9665
9666                 if (!is_valid_ether_addr(ibss.bssid))
9667                         return -EINVAL;
9668         }
9669         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9670         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9671
9672         if (info->attrs[NL80211_ATTR_IE]) {
9673                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9674                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9675         }
9676
9677         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9678         if (err)
9679                 return err;
9680
9681         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9682                                      NL80211_IFTYPE_ADHOC))
9683                 return -EINVAL;
9684
9685         switch (ibss.chandef.width) {
9686         case NL80211_CHAN_WIDTH_5:
9687         case NL80211_CHAN_WIDTH_10:
9688         case NL80211_CHAN_WIDTH_20_NOHT:
9689                 break;
9690         case NL80211_CHAN_WIDTH_20:
9691         case NL80211_CHAN_WIDTH_40:
9692                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9693                         return -EINVAL;
9694                 break;
9695         case NL80211_CHAN_WIDTH_80:
9696         case NL80211_CHAN_WIDTH_80P80:
9697         case NL80211_CHAN_WIDTH_160:
9698                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9699                         return -EINVAL;
9700                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9701                                              NL80211_EXT_FEATURE_VHT_IBSS))
9702                         return -EINVAL;
9703                 break;
9704         default:
9705                 return -EINVAL;
9706         }
9707
9708         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9709         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9710
9711         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9712                 u8 *rates =
9713                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9714                 int n_rates =
9715                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9716                 struct ieee80211_supported_band *sband =
9717                         wiphy->bands[ibss.chandef.chan->band];
9718
9719                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9720                                              &ibss.basic_rates);
9721                 if (err)
9722                         return err;
9723         }
9724
9725         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9726                 memcpy(&ibss.ht_capa_mask,
9727                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9728                        sizeof(ibss.ht_capa_mask));
9729
9730         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9731                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9732                         return -EINVAL;
9733                 memcpy(&ibss.ht_capa,
9734                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9735                        sizeof(ibss.ht_capa));
9736         }
9737
9738         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9739             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9740                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9741                 return -EINVAL;
9742
9743         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9744                 bool no_ht = false;
9745
9746                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9747                 if (IS_ERR(connkeys))
9748                         return PTR_ERR(connkeys);
9749
9750                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9751                     no_ht) {
9752                         kzfree(connkeys);
9753                         return -EINVAL;
9754                 }
9755         }
9756
9757         ibss.control_port =
9758                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9759
9760         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9761                 int r = validate_pae_over_nl80211(rdev, info);
9762
9763                 if (r < 0) {
9764                         kzfree(connkeys);
9765                         return r;
9766                 }
9767
9768                 ibss.control_port_over_nl80211 = true;
9769         }
9770
9771         ibss.userspace_handles_dfs =
9772                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9773
9774         wdev_lock(dev->ieee80211_ptr);
9775         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9776         if (err)
9777                 kzfree(connkeys);
9778         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9779                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9780         wdev_unlock(dev->ieee80211_ptr);
9781
9782         return err;
9783 }
9784
9785 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9786 {
9787         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9788         struct net_device *dev = info->user_ptr[1];
9789
9790         if (!rdev->ops->leave_ibss)
9791                 return -EOPNOTSUPP;
9792
9793         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9794                 return -EOPNOTSUPP;
9795
9796         return cfg80211_leave_ibss(rdev, dev, false);
9797 }
9798
9799 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9800 {
9801         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9802         struct net_device *dev = info->user_ptr[1];
9803         int mcast_rate[NUM_NL80211_BANDS];
9804         u32 nla_rate;
9805         int err;
9806
9807         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9808             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9809             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9810                 return -EOPNOTSUPP;
9811
9812         if (!rdev->ops->set_mcast_rate)
9813                 return -EOPNOTSUPP;
9814
9815         memset(mcast_rate, 0, sizeof(mcast_rate));
9816
9817         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9818                 return -EINVAL;
9819
9820         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9821         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9822                 return -EINVAL;
9823
9824         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9825
9826         return err;
9827 }
9828
9829 static struct sk_buff *
9830 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9831                             struct wireless_dev *wdev, int approxlen,
9832                             u32 portid, u32 seq, enum nl80211_commands cmd,
9833                             enum nl80211_attrs attr,
9834                             const struct nl80211_vendor_cmd_info *info,
9835                             gfp_t gfp)
9836 {
9837         struct sk_buff *skb;
9838         void *hdr;
9839         struct nlattr *data;
9840
9841         skb = nlmsg_new(approxlen + 100, gfp);
9842         if (!skb)
9843                 return NULL;
9844
9845         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9846         if (!hdr) {
9847                 kfree_skb(skb);
9848                 return NULL;
9849         }
9850
9851         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9852                 goto nla_put_failure;
9853
9854         if (info) {
9855                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9856                                 info->vendor_id))
9857                         goto nla_put_failure;
9858                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9859                                 info->subcmd))
9860                         goto nla_put_failure;
9861         }
9862
9863         if (wdev) {
9864                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9865                                       wdev_id(wdev), NL80211_ATTR_PAD))
9866                         goto nla_put_failure;
9867                 if (wdev->netdev &&
9868                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9869                                 wdev->netdev->ifindex))
9870                         goto nla_put_failure;
9871         }
9872
9873         data = nla_nest_start_noflag(skb, attr);
9874         if (!data)
9875                 goto nla_put_failure;
9876
9877         ((void **)skb->cb)[0] = rdev;
9878         ((void **)skb->cb)[1] = hdr;
9879         ((void **)skb->cb)[2] = data;
9880
9881         return skb;
9882
9883  nla_put_failure:
9884         kfree_skb(skb);
9885         return NULL;
9886 }
9887
9888 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9889                                            struct wireless_dev *wdev,
9890                                            enum nl80211_commands cmd,
9891                                            enum nl80211_attrs attr,
9892                                            unsigned int portid,
9893                                            int vendor_event_idx,
9894                                            int approxlen, gfp_t gfp)
9895 {
9896         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9897         const struct nl80211_vendor_cmd_info *info;
9898
9899         switch (cmd) {
9900         case NL80211_CMD_TESTMODE:
9901                 if (WARN_ON(vendor_event_idx != -1))
9902                         return NULL;
9903                 info = NULL;
9904                 break;
9905         case NL80211_CMD_VENDOR:
9906                 if (WARN_ON(vendor_event_idx < 0 ||
9907                             vendor_event_idx >= wiphy->n_vendor_events))
9908                         return NULL;
9909                 info = &wiphy->vendor_events[vendor_event_idx];
9910                 break;
9911         default:
9912                 WARN_ON(1);
9913                 return NULL;
9914         }
9915
9916         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9917                                            cmd, attr, info, gfp);
9918 }
9919 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9920
9921 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9922 {
9923         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9924         void *hdr = ((void **)skb->cb)[1];
9925         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9926         struct nlattr *data = ((void **)skb->cb)[2];
9927         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9928
9929         /* clear CB data for netlink core to own from now on */
9930         memset(skb->cb, 0, sizeof(skb->cb));
9931
9932         nla_nest_end(skb, data);
9933         genlmsg_end(skb, hdr);
9934
9935         if (nlhdr->nlmsg_pid) {
9936                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9937                                 nlhdr->nlmsg_pid);
9938         } else {
9939                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9940                         mcgrp = NL80211_MCGRP_VENDOR;
9941
9942                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9943                                         skb, 0, mcgrp, gfp);
9944         }
9945 }
9946 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9947
9948 #ifdef CONFIG_NL80211_TESTMODE
9949 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9950 {
9951         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9952         struct wireless_dev *wdev =
9953                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9954         int err;
9955
9956         if (!rdev->ops->testmode_cmd)
9957                 return -EOPNOTSUPP;
9958
9959         if (IS_ERR(wdev)) {
9960                 err = PTR_ERR(wdev);
9961                 if (err != -EINVAL)
9962                         return err;
9963                 wdev = NULL;
9964         } else if (wdev->wiphy != &rdev->wiphy) {
9965                 return -EINVAL;
9966         }
9967
9968         if (!info->attrs[NL80211_ATTR_TESTDATA])
9969                 return -EINVAL;
9970
9971         rdev->cur_cmd_info = info;
9972         err = rdev_testmode_cmd(rdev, wdev,
9973                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9974                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9975         rdev->cur_cmd_info = NULL;
9976
9977         return err;
9978 }
9979
9980 static int nl80211_testmode_dump(struct sk_buff *skb,
9981                                  struct netlink_callback *cb)
9982 {
9983         struct cfg80211_registered_device *rdev;
9984         struct nlattr **attrbuf = NULL;
9985         int err;
9986         long phy_idx;
9987         void *data = NULL;
9988         int data_len = 0;
9989
9990         rtnl_lock();
9991
9992         if (cb->args[0]) {
9993                 /*
9994                  * 0 is a valid index, but not valid for args[0],
9995                  * so we need to offset by 1.
9996                  */
9997                 phy_idx = cb->args[0] - 1;
9998
9999                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10000                 if (!rdev) {
10001                         err = -ENOENT;
10002                         goto out_err;
10003                 }
10004         } else {
10005                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10006                                   GFP_KERNEL);
10007                 if (!attrbuf) {
10008                         err = -ENOMEM;
10009                         goto out_err;
10010                 }
10011
10012                 err = nlmsg_parse_deprecated(cb->nlh,
10013                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10014                                              attrbuf, nl80211_fam.maxattr,
10015                                              nl80211_policy, NULL);
10016                 if (err)
10017                         goto out_err;
10018
10019                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10020                 if (IS_ERR(rdev)) {
10021                         err = PTR_ERR(rdev);
10022                         goto out_err;
10023                 }
10024                 phy_idx = rdev->wiphy_idx;
10025
10026                 if (attrbuf[NL80211_ATTR_TESTDATA])
10027                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10028         }
10029
10030         if (cb->args[1]) {
10031                 data = nla_data((void *)cb->args[1]);
10032                 data_len = nla_len((void *)cb->args[1]);
10033         }
10034
10035         if (!rdev->ops->testmode_dump) {
10036                 err = -EOPNOTSUPP;
10037                 goto out_err;
10038         }
10039
10040         while (1) {
10041                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10042                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10043                                            NL80211_CMD_TESTMODE);
10044                 struct nlattr *tmdata;
10045
10046                 if (!hdr)
10047                         break;
10048
10049                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10050                         genlmsg_cancel(skb, hdr);
10051                         break;
10052                 }
10053
10054                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10055                 if (!tmdata) {
10056                         genlmsg_cancel(skb, hdr);
10057                         break;
10058                 }
10059                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10060                 nla_nest_end(skb, tmdata);
10061
10062                 if (err == -ENOBUFS || err == -ENOENT) {
10063                         genlmsg_cancel(skb, hdr);
10064                         break;
10065                 } else if (err) {
10066                         genlmsg_cancel(skb, hdr);
10067                         goto out_err;
10068                 }
10069
10070                 genlmsg_end(skb, hdr);
10071         }
10072
10073         err = skb->len;
10074         /* see above */
10075         cb->args[0] = phy_idx + 1;
10076  out_err:
10077         kfree(attrbuf);
10078         rtnl_unlock();
10079         return err;
10080 }
10081 #endif
10082
10083 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10084 {
10085         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10086         struct net_device *dev = info->user_ptr[1];
10087         struct cfg80211_connect_params connect;
10088         struct wiphy *wiphy;
10089         struct cfg80211_cached_keys *connkeys = NULL;
10090         int err;
10091
10092         memset(&connect, 0, sizeof(connect));
10093
10094         if (!info->attrs[NL80211_ATTR_SSID] ||
10095             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10096                 return -EINVAL;
10097
10098         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10099                 connect.auth_type =
10100                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10101                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10102                                              NL80211_CMD_CONNECT))
10103                         return -EINVAL;
10104         } else
10105                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10106
10107         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10108
10109         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10110             !wiphy_ext_feature_isset(&rdev->wiphy,
10111                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10112                 return -EINVAL;
10113         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10114
10115         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10116                                       NL80211_MAX_NR_CIPHER_SUITES);
10117         if (err)
10118                 return err;
10119
10120         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10121             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10122                 return -EOPNOTSUPP;
10123
10124         wiphy = &rdev->wiphy;
10125
10126         connect.bg_scan_period = -1;
10127         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10128                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10129                 connect.bg_scan_period =
10130                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10131         }
10132
10133         if (info->attrs[NL80211_ATTR_MAC])
10134                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10135         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10136                 connect.bssid_hint =
10137                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10138         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10139         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10140
10141         if (info->attrs[NL80211_ATTR_IE]) {
10142                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10143                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10144         }
10145
10146         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10147                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10148                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10149                     !wiphy_ext_feature_isset(&rdev->wiphy,
10150                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10151                         return -EOPNOTSUPP;
10152         } else {
10153                 connect.mfp = NL80211_MFP_NO;
10154         }
10155
10156         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10157                 connect.prev_bssid =
10158                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10159
10160         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10161                 connect.channel = nl80211_get_valid_chan(
10162                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
10163                 if (!connect.channel)
10164                         return -EINVAL;
10165         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10166                 connect.channel_hint = nl80211_get_valid_chan(
10167                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10168                 if (!connect.channel_hint)
10169                         return -EINVAL;
10170         }
10171
10172         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10173                 connect.edmg.channels =
10174                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10175
10176                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10177                         connect.edmg.bw_config =
10178                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10179         }
10180
10181         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10182                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10183                 if (IS_ERR(connkeys))
10184                         return PTR_ERR(connkeys);
10185         }
10186
10187         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10188                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10189
10190         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10191                 memcpy(&connect.ht_capa_mask,
10192                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10193                        sizeof(connect.ht_capa_mask));
10194
10195         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10196                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10197                         kzfree(connkeys);
10198                         return -EINVAL;
10199                 }
10200                 memcpy(&connect.ht_capa,
10201                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10202                        sizeof(connect.ht_capa));
10203         }
10204
10205         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10206                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10207
10208         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10209                 memcpy(&connect.vht_capa_mask,
10210                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10211                        sizeof(connect.vht_capa_mask));
10212
10213         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10214                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10215                         kzfree(connkeys);
10216                         return -EINVAL;
10217                 }
10218                 memcpy(&connect.vht_capa,
10219                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10220                        sizeof(connect.vht_capa));
10221         }
10222
10223         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10224                 if (!((rdev->wiphy.features &
10225                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10226                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10227                     !wiphy_ext_feature_isset(&rdev->wiphy,
10228                                              NL80211_EXT_FEATURE_RRM)) {
10229                         kzfree(connkeys);
10230                         return -EINVAL;
10231                 }
10232                 connect.flags |= ASSOC_REQ_USE_RRM;
10233         }
10234
10235         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10236         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10237                 kzfree(connkeys);
10238                 return -EOPNOTSUPP;
10239         }
10240
10241         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10242                 /* bss selection makes no sense if bssid is set */
10243                 if (connect.bssid) {
10244                         kzfree(connkeys);
10245                         return -EINVAL;
10246                 }
10247
10248                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10249                                        wiphy, &connect.bss_select);
10250                 if (err) {
10251                         kzfree(connkeys);
10252                         return err;
10253                 }
10254         }
10255
10256         if (wiphy_ext_feature_isset(&rdev->wiphy,
10257                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10258             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10259             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10260             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10261             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10262                 connect.fils_erp_username =
10263                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10264                 connect.fils_erp_username_len =
10265                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10266                 connect.fils_erp_realm =
10267                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10268                 connect.fils_erp_realm_len =
10269                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10270                 connect.fils_erp_next_seq_num =
10271                         nla_get_u16(
10272                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10273                 connect.fils_erp_rrk =
10274                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10275                 connect.fils_erp_rrk_len =
10276                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10277         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10278                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10279                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10280                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10281                 kzfree(connkeys);
10282                 return -EINVAL;
10283         }
10284
10285         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10286                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10287                         kzfree(connkeys);
10288                         GENL_SET_ERR_MSG(info,
10289                                          "external auth requires connection ownership");
10290                         return -EINVAL;
10291                 }
10292                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10293         }
10294
10295         wdev_lock(dev->ieee80211_ptr);
10296
10297         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10298                                connect.prev_bssid);
10299         if (err)
10300                 kzfree(connkeys);
10301
10302         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10303                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10304                 if (connect.bssid)
10305                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10306                                connect.bssid, ETH_ALEN);
10307                 else
10308                         memset(dev->ieee80211_ptr->disconnect_bssid,
10309                                0, ETH_ALEN);
10310         }
10311
10312         wdev_unlock(dev->ieee80211_ptr);
10313
10314         return err;
10315 }
10316
10317 static int nl80211_update_connect_params(struct sk_buff *skb,
10318                                          struct genl_info *info)
10319 {
10320         struct cfg80211_connect_params connect = {};
10321         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10322         struct net_device *dev = info->user_ptr[1];
10323         struct wireless_dev *wdev = dev->ieee80211_ptr;
10324         bool fils_sk_offload;
10325         u32 auth_type;
10326         u32 changed = 0;
10327         int ret;
10328
10329         if (!rdev->ops->update_connect_params)
10330                 return -EOPNOTSUPP;
10331
10332         if (info->attrs[NL80211_ATTR_IE]) {
10333                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10334                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10335                 changed |= UPDATE_ASSOC_IES;
10336         }
10337
10338         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10339                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10340
10341         /*
10342          * when driver supports fils-sk offload all attributes must be
10343          * provided. So the else covers "fils-sk-not-all" and
10344          * "no-fils-sk-any".
10345          */
10346         if (fils_sk_offload &&
10347             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10348             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10349             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10350             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10351                 connect.fils_erp_username =
10352                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10353                 connect.fils_erp_username_len =
10354                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10355                 connect.fils_erp_realm =
10356                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10357                 connect.fils_erp_realm_len =
10358                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10359                 connect.fils_erp_next_seq_num =
10360                         nla_get_u16(
10361                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10362                 connect.fils_erp_rrk =
10363                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10364                 connect.fils_erp_rrk_len =
10365                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10366                 changed |= UPDATE_FILS_ERP_INFO;
10367         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10368                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10369                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10370                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10371                 return -EINVAL;
10372         }
10373
10374         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10375                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10376                 if (!nl80211_valid_auth_type(rdev, auth_type,
10377                                              NL80211_CMD_CONNECT))
10378                         return -EINVAL;
10379
10380                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10381                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10382                         return -EINVAL;
10383
10384                 connect.auth_type = auth_type;
10385                 changed |= UPDATE_AUTH_TYPE;
10386         }
10387
10388         wdev_lock(dev->ieee80211_ptr);
10389         if (!wdev->current_bss)
10390                 ret = -ENOLINK;
10391         else
10392                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10393         wdev_unlock(dev->ieee80211_ptr);
10394
10395         return ret;
10396 }
10397
10398 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10399 {
10400         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10401         struct net_device *dev = info->user_ptr[1];
10402         u16 reason;
10403         int ret;
10404
10405         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10406             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10407                 return -EPERM;
10408
10409         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10410                 reason = WLAN_REASON_DEAUTH_LEAVING;
10411         else
10412                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10413
10414         if (reason == 0)
10415                 return -EINVAL;
10416
10417         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10418             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10419                 return -EOPNOTSUPP;
10420
10421         wdev_lock(dev->ieee80211_ptr);
10422         ret = cfg80211_disconnect(rdev, dev, reason, true);
10423         wdev_unlock(dev->ieee80211_ptr);
10424         return ret;
10425 }
10426
10427 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10428 {
10429         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10430         struct net *net;
10431         int err;
10432
10433         if (info->attrs[NL80211_ATTR_PID]) {
10434                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10435
10436                 net = get_net_ns_by_pid(pid);
10437         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10438                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10439
10440                 net = get_net_ns_by_fd(fd);
10441         } else {
10442                 return -EINVAL;
10443         }
10444
10445         if (IS_ERR(net))
10446                 return PTR_ERR(net);
10447
10448         err = 0;
10449
10450         /* check if anything to do */
10451         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10452                 err = cfg80211_switch_netns(rdev, net);
10453
10454         put_net(net);
10455         return err;
10456 }
10457
10458 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10459 {
10460         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10461         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10462                         struct cfg80211_pmksa *pmksa) = NULL;
10463         struct net_device *dev = info->user_ptr[1];
10464         struct cfg80211_pmksa pmksa;
10465
10466         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10467
10468         if (!info->attrs[NL80211_ATTR_PMKID])
10469                 return -EINVAL;
10470
10471         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10472
10473         if (info->attrs[NL80211_ATTR_MAC]) {
10474                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10475         } else if (info->attrs[NL80211_ATTR_SSID] &&
10476                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10477                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10478                     info->attrs[NL80211_ATTR_PMK])) {
10479                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10480                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10481                 pmksa.cache_id =
10482                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10483         } else {
10484                 return -EINVAL;
10485         }
10486         if (info->attrs[NL80211_ATTR_PMK]) {
10487                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10488                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10489         }
10490
10491         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10492             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10493             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10494               wiphy_ext_feature_isset(&rdev->wiphy,
10495                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10496                 return -EOPNOTSUPP;
10497
10498         switch (info->genlhdr->cmd) {
10499         case NL80211_CMD_SET_PMKSA:
10500                 rdev_ops = rdev->ops->set_pmksa;
10501                 break;
10502         case NL80211_CMD_DEL_PMKSA:
10503                 rdev_ops = rdev->ops->del_pmksa;
10504                 break;
10505         default:
10506                 WARN_ON(1);
10507                 break;
10508         }
10509
10510         if (!rdev_ops)
10511                 return -EOPNOTSUPP;
10512
10513         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10514 }
10515
10516 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10517 {
10518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10519         struct net_device *dev = info->user_ptr[1];
10520
10521         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10522             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10523                 return -EOPNOTSUPP;
10524
10525         if (!rdev->ops->flush_pmksa)
10526                 return -EOPNOTSUPP;
10527
10528         return rdev_flush_pmksa(rdev, dev);
10529 }
10530
10531 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10532 {
10533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10534         struct net_device *dev = info->user_ptr[1];
10535         u8 action_code, dialog_token;
10536         u32 peer_capability = 0;
10537         u16 status_code;
10538         u8 *peer;
10539         bool initiator;
10540
10541         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10542             !rdev->ops->tdls_mgmt)
10543                 return -EOPNOTSUPP;
10544
10545         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10546             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10547             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10548             !info->attrs[NL80211_ATTR_IE] ||
10549             !info->attrs[NL80211_ATTR_MAC])
10550                 return -EINVAL;
10551
10552         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10553         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10554         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10555         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10556         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10557         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10558                 peer_capability =
10559                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10560
10561         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10562                               dialog_token, status_code, peer_capability,
10563                               initiator,
10564                               nla_data(info->attrs[NL80211_ATTR_IE]),
10565                               nla_len(info->attrs[NL80211_ATTR_IE]));
10566 }
10567
10568 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10569 {
10570         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10571         struct net_device *dev = info->user_ptr[1];
10572         enum nl80211_tdls_operation operation;
10573         u8 *peer;
10574
10575         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10576             !rdev->ops->tdls_oper)
10577                 return -EOPNOTSUPP;
10578
10579         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10580             !info->attrs[NL80211_ATTR_MAC])
10581                 return -EINVAL;
10582
10583         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10584         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10585
10586         return rdev_tdls_oper(rdev, dev, peer, operation);
10587 }
10588
10589 static int nl80211_remain_on_channel(struct sk_buff *skb,
10590                                      struct genl_info *info)
10591 {
10592         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10593         struct wireless_dev *wdev = info->user_ptr[1];
10594         struct cfg80211_chan_def chandef;
10595         const struct cfg80211_chan_def *compat_chandef;
10596         struct sk_buff *msg;
10597         void *hdr;
10598         u64 cookie;
10599         u32 duration;
10600         int err;
10601
10602         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10603             !info->attrs[NL80211_ATTR_DURATION])
10604                 return -EINVAL;
10605
10606         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10607
10608         if (!rdev->ops->remain_on_channel ||
10609             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10610                 return -EOPNOTSUPP;
10611
10612         /*
10613          * We should be on that channel for at least a minimum amount of
10614          * time (10ms) but no longer than the driver supports.
10615          */
10616         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10617             duration > rdev->wiphy.max_remain_on_channel_duration)
10618                 return -EINVAL;
10619
10620         err = nl80211_parse_chandef(rdev, info, &chandef);
10621         if (err)
10622                 return err;
10623
10624         wdev_lock(wdev);
10625         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10626             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10627                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10628                                                              &chandef);
10629                 if (compat_chandef != &chandef) {
10630                         wdev_unlock(wdev);
10631                         return -EBUSY;
10632                 }
10633         }
10634         wdev_unlock(wdev);
10635
10636         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10637         if (!msg)
10638                 return -ENOMEM;
10639
10640         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10641                              NL80211_CMD_REMAIN_ON_CHANNEL);
10642         if (!hdr) {
10643                 err = -ENOBUFS;
10644                 goto free_msg;
10645         }
10646
10647         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10648                                      duration, &cookie);
10649
10650         if (err)
10651                 goto free_msg;
10652
10653         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10654                               NL80211_ATTR_PAD))
10655                 goto nla_put_failure;
10656
10657         genlmsg_end(msg, hdr);
10658
10659         return genlmsg_reply(msg, info);
10660
10661  nla_put_failure:
10662         err = -ENOBUFS;
10663  free_msg:
10664         nlmsg_free(msg);
10665         return err;
10666 }
10667
10668 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10669                                             struct genl_info *info)
10670 {
10671         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10672         struct wireless_dev *wdev = info->user_ptr[1];
10673         u64 cookie;
10674
10675         if (!info->attrs[NL80211_ATTR_COOKIE])
10676                 return -EINVAL;
10677
10678         if (!rdev->ops->cancel_remain_on_channel)
10679                 return -EOPNOTSUPP;
10680
10681         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10682
10683         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10684 }
10685
10686 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10687                                        struct genl_info *info)
10688 {
10689         struct cfg80211_bitrate_mask mask;
10690         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10691         struct net_device *dev = info->user_ptr[1];
10692         int err;
10693
10694         if (!rdev->ops->set_bitrate_mask)
10695                 return -EOPNOTSUPP;
10696
10697         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10698         if (err)
10699                 return err;
10700
10701         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10702 }
10703
10704 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10705 {
10706         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10707         struct wireless_dev *wdev = info->user_ptr[1];
10708         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10709
10710         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10711                 return -EINVAL;
10712
10713         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10714                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10715
10716         switch (wdev->iftype) {
10717         case NL80211_IFTYPE_STATION:
10718         case NL80211_IFTYPE_ADHOC:
10719         case NL80211_IFTYPE_P2P_CLIENT:
10720         case NL80211_IFTYPE_AP:
10721         case NL80211_IFTYPE_AP_VLAN:
10722         case NL80211_IFTYPE_MESH_POINT:
10723         case NL80211_IFTYPE_P2P_GO:
10724         case NL80211_IFTYPE_P2P_DEVICE:
10725                 break;
10726         case NL80211_IFTYPE_NAN:
10727         default:
10728                 return -EOPNOTSUPP;
10729         }
10730
10731         /* not much point in registering if we can't reply */
10732         if (!rdev->ops->mgmt_tx)
10733                 return -EOPNOTSUPP;
10734
10735         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10736                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10737                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10738                                            info->extack);
10739 }
10740
10741 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10742 {
10743         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10744         struct wireless_dev *wdev = info->user_ptr[1];
10745         struct cfg80211_chan_def chandef;
10746         int err;
10747         void *hdr = NULL;
10748         u64 cookie;
10749         struct sk_buff *msg = NULL;
10750         struct cfg80211_mgmt_tx_params params = {
10751                 .dont_wait_for_ack =
10752                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10753         };
10754
10755         if (!info->attrs[NL80211_ATTR_FRAME])
10756                 return -EINVAL;
10757
10758         if (!rdev->ops->mgmt_tx)
10759                 return -EOPNOTSUPP;
10760
10761         switch (wdev->iftype) {
10762         case NL80211_IFTYPE_P2P_DEVICE:
10763                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10764                         return -EINVAL;
10765         case NL80211_IFTYPE_STATION:
10766         case NL80211_IFTYPE_ADHOC:
10767         case NL80211_IFTYPE_P2P_CLIENT:
10768         case NL80211_IFTYPE_AP:
10769         case NL80211_IFTYPE_AP_VLAN:
10770         case NL80211_IFTYPE_MESH_POINT:
10771         case NL80211_IFTYPE_P2P_GO:
10772                 break;
10773         case NL80211_IFTYPE_NAN:
10774         default:
10775                 return -EOPNOTSUPP;
10776         }
10777
10778         if (info->attrs[NL80211_ATTR_DURATION]) {
10779                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10780                         return -EINVAL;
10781                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10782
10783                 /*
10784                  * We should wait on the channel for at least a minimum amount
10785                  * of time (10ms) but no longer than the driver supports.
10786                  */
10787                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10788                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10789                         return -EINVAL;
10790         }
10791
10792         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10793
10794         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10795                 return -EINVAL;
10796
10797         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10798
10799         /* get the channel if any has been specified, otherwise pass NULL to
10800          * the driver. The latter will use the current one
10801          */
10802         chandef.chan = NULL;
10803         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10804                 err = nl80211_parse_chandef(rdev, info, &chandef);
10805                 if (err)
10806                         return err;
10807         }
10808
10809         if (!chandef.chan && params.offchan)
10810                 return -EINVAL;
10811
10812         wdev_lock(wdev);
10813         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10814                 wdev_unlock(wdev);
10815                 return -EBUSY;
10816         }
10817         wdev_unlock(wdev);
10818
10819         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10820         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10821
10822         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10823                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10824                 int i;
10825
10826                 if (len % sizeof(u16))
10827                         return -EINVAL;
10828
10829                 params.n_csa_offsets = len / sizeof(u16);
10830                 params.csa_offsets =
10831                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10832
10833                 /* check that all the offsets fit the frame */
10834                 for (i = 0; i < params.n_csa_offsets; i++) {
10835                         if (params.csa_offsets[i] >= params.len)
10836                                 return -EINVAL;
10837                 }
10838         }
10839
10840         if (!params.dont_wait_for_ack) {
10841                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10842                 if (!msg)
10843                         return -ENOMEM;
10844
10845                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10846                                      NL80211_CMD_FRAME);
10847                 if (!hdr) {
10848                         err = -ENOBUFS;
10849                         goto free_msg;
10850                 }
10851         }
10852
10853         params.chan = chandef.chan;
10854         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10855         if (err)
10856                 goto free_msg;
10857
10858         if (msg) {
10859                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10860                                       NL80211_ATTR_PAD))
10861                         goto nla_put_failure;
10862
10863                 genlmsg_end(msg, hdr);
10864                 return genlmsg_reply(msg, info);
10865         }
10866
10867         return 0;
10868
10869  nla_put_failure:
10870         err = -ENOBUFS;
10871  free_msg:
10872         nlmsg_free(msg);
10873         return err;
10874 }
10875
10876 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10877 {
10878         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10879         struct wireless_dev *wdev = info->user_ptr[1];
10880         u64 cookie;
10881
10882         if (!info->attrs[NL80211_ATTR_COOKIE])
10883                 return -EINVAL;
10884
10885         if (!rdev->ops->mgmt_tx_cancel_wait)
10886                 return -EOPNOTSUPP;
10887
10888         switch (wdev->iftype) {
10889         case NL80211_IFTYPE_STATION:
10890         case NL80211_IFTYPE_ADHOC:
10891         case NL80211_IFTYPE_P2P_CLIENT:
10892         case NL80211_IFTYPE_AP:
10893         case NL80211_IFTYPE_AP_VLAN:
10894         case NL80211_IFTYPE_P2P_GO:
10895         case NL80211_IFTYPE_P2P_DEVICE:
10896                 break;
10897         case NL80211_IFTYPE_NAN:
10898         default:
10899                 return -EOPNOTSUPP;
10900         }
10901
10902         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10903
10904         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10905 }
10906
10907 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10908 {
10909         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10910         struct wireless_dev *wdev;
10911         struct net_device *dev = info->user_ptr[1];
10912         u8 ps_state;
10913         bool state;
10914         int err;
10915
10916         if (!info->attrs[NL80211_ATTR_PS_STATE])
10917                 return -EINVAL;
10918
10919         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10920
10921         wdev = dev->ieee80211_ptr;
10922
10923         if (!rdev->ops->set_power_mgmt)
10924                 return -EOPNOTSUPP;
10925
10926         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10927
10928         if (state == wdev->ps)
10929                 return 0;
10930
10931         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10932         if (!err)
10933                 wdev->ps = state;
10934         return err;
10935 }
10936
10937 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10938 {
10939         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10940         enum nl80211_ps_state ps_state;
10941         struct wireless_dev *wdev;
10942         struct net_device *dev = info->user_ptr[1];
10943         struct sk_buff *msg;
10944         void *hdr;
10945         int err;
10946
10947         wdev = dev->ieee80211_ptr;
10948
10949         if (!rdev->ops->set_power_mgmt)
10950                 return -EOPNOTSUPP;
10951
10952         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10953         if (!msg)
10954                 return -ENOMEM;
10955
10956         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10957                              NL80211_CMD_GET_POWER_SAVE);
10958         if (!hdr) {
10959                 err = -ENOBUFS;
10960                 goto free_msg;
10961         }
10962
10963         if (wdev->ps)
10964                 ps_state = NL80211_PS_ENABLED;
10965         else
10966                 ps_state = NL80211_PS_DISABLED;
10967
10968         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10969                 goto nla_put_failure;
10970
10971         genlmsg_end(msg, hdr);
10972         return genlmsg_reply(msg, info);
10973
10974  nla_put_failure:
10975         err = -ENOBUFS;
10976  free_msg:
10977         nlmsg_free(msg);
10978         return err;
10979 }
10980
10981 static const struct nla_policy
10982 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10983         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10984         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10985         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10986         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10987         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10988         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10989         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10990 };
10991
10992 static int nl80211_set_cqm_txe(struct genl_info *info,
10993                                u32 rate, u32 pkts, u32 intvl)
10994 {
10995         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10996         struct net_device *dev = info->user_ptr[1];
10997         struct wireless_dev *wdev = dev->ieee80211_ptr;
10998
10999         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11000                 return -EINVAL;
11001
11002         if (!rdev->ops->set_cqm_txe_config)
11003                 return -EOPNOTSUPP;
11004
11005         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11006             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11007                 return -EOPNOTSUPP;
11008
11009         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11010 }
11011
11012 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11013                                     struct net_device *dev)
11014 {
11015         struct wireless_dev *wdev = dev->ieee80211_ptr;
11016         s32 last, low, high;
11017         u32 hyst;
11018         int i, n, low_index;
11019         int err;
11020
11021         /* RSSI reporting disabled? */
11022         if (!wdev->cqm_config)
11023                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11024
11025         /*
11026          * Obtain current RSSI value if possible, if not and no RSSI threshold
11027          * event has been received yet, we should receive an event after a
11028          * connection is established and enough beacons received to calculate
11029          * the average.
11030          */
11031         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11032             rdev->ops->get_station) {
11033                 struct station_info sinfo = {};
11034                 u8 *mac_addr;
11035
11036                 mac_addr = wdev->current_bss->pub.bssid;
11037
11038                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11039                 if (err)
11040                         return err;
11041
11042                 cfg80211_sinfo_release_content(&sinfo);
11043                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11044                         wdev->cqm_config->last_rssi_event_value =
11045                                 (s8) sinfo.rx_beacon_signal_avg;
11046         }
11047
11048         last = wdev->cqm_config->last_rssi_event_value;
11049         hyst = wdev->cqm_config->rssi_hyst;
11050         n = wdev->cqm_config->n_rssi_thresholds;
11051
11052         for (i = 0; i < n; i++) {
11053                 i = array_index_nospec(i, n);
11054                 if (last < wdev->cqm_config->rssi_thresholds[i])
11055                         break;
11056         }
11057
11058         low_index = i - 1;
11059         if (low_index >= 0) {
11060                 low_index = array_index_nospec(low_index, n);
11061                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11062         } else {
11063                 low = S32_MIN;
11064         }
11065         if (i < n) {
11066                 i = array_index_nospec(i, n);
11067                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11068         } else {
11069                 high = S32_MAX;
11070         }
11071
11072         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11073 }
11074
11075 static int nl80211_set_cqm_rssi(struct genl_info *info,
11076                                 const s32 *thresholds, int n_thresholds,
11077                                 u32 hysteresis)
11078 {
11079         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11080         struct net_device *dev = info->user_ptr[1];
11081         struct wireless_dev *wdev = dev->ieee80211_ptr;
11082         int i, err;
11083         s32 prev = S32_MIN;
11084
11085         /* Check all values negative and sorted */
11086         for (i = 0; i < n_thresholds; i++) {
11087                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11088                         return -EINVAL;
11089
11090                 prev = thresholds[i];
11091         }
11092
11093         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11094             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11095                 return -EOPNOTSUPP;
11096
11097         wdev_lock(wdev);
11098         cfg80211_cqm_config_free(wdev);
11099         wdev_unlock(wdev);
11100
11101         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11102                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11103                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11104
11105                 return rdev_set_cqm_rssi_config(rdev, dev,
11106                                                 thresholds[0], hysteresis);
11107         }
11108
11109         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11110                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11111                 return -EOPNOTSUPP;
11112
11113         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11114                 n_thresholds = 0;
11115
11116         wdev_lock(wdev);
11117         if (n_thresholds) {
11118                 struct cfg80211_cqm_config *cqm_config;
11119
11120                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11121                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11122                 if (!cqm_config) {
11123                         err = -ENOMEM;
11124                         goto unlock;
11125                 }
11126
11127                 cqm_config->rssi_hyst = hysteresis;
11128                 cqm_config->n_rssi_thresholds = n_thresholds;
11129                 memcpy(cqm_config->rssi_thresholds, thresholds,
11130                        n_thresholds * sizeof(s32));
11131
11132                 wdev->cqm_config = cqm_config;
11133         }
11134
11135         err = cfg80211_cqm_rssi_update(rdev, dev);
11136
11137 unlock:
11138         wdev_unlock(wdev);
11139
11140         return err;
11141 }
11142
11143 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11144 {
11145         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11146         struct nlattr *cqm;
11147         int err;
11148
11149         cqm = info->attrs[NL80211_ATTR_CQM];
11150         if (!cqm)
11151                 return -EINVAL;
11152
11153         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11154                                           nl80211_attr_cqm_policy,
11155                                           info->extack);
11156         if (err)
11157                 return err;
11158
11159         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11160             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11161                 const s32 *thresholds =
11162                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11163                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11164                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11165
11166                 if (len % 4)
11167                         return -EINVAL;
11168
11169                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11170                                             hysteresis);
11171         }
11172
11173         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11174             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11175             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11176                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11177                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11178                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11179
11180                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11181         }
11182
11183         return -EINVAL;
11184 }
11185
11186 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11187 {
11188         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11189         struct net_device *dev = info->user_ptr[1];
11190         struct ocb_setup setup = {};
11191         int err;
11192
11193         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11194         if (err)
11195                 return err;
11196
11197         return cfg80211_join_ocb(rdev, dev, &setup);
11198 }
11199
11200 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11201 {
11202         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11203         struct net_device *dev = info->user_ptr[1];
11204
11205         return cfg80211_leave_ocb(rdev, dev);
11206 }
11207
11208 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11209 {
11210         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11211         struct net_device *dev = info->user_ptr[1];
11212         struct mesh_config cfg;
11213         struct mesh_setup setup;
11214         int err;
11215
11216         /* start with default */
11217         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11218         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11219
11220         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11221                 /* and parse parameters if given */
11222                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11223                 if (err)
11224                         return err;
11225         }
11226
11227         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11228             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11229                 return -EINVAL;
11230
11231         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11232         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11233
11234         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11235             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11236                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11237                         return -EINVAL;
11238
11239         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11240                 setup.beacon_interval =
11241                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11242
11243                 err = cfg80211_validate_beacon_int(rdev,
11244                                                    NL80211_IFTYPE_MESH_POINT,
11245                                                    setup.beacon_interval);
11246                 if (err)
11247                         return err;
11248         }
11249
11250         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11251                 setup.dtim_period =
11252                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11253                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11254                         return -EINVAL;
11255         }
11256
11257         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11258                 /* parse additional setup parameters if given */
11259                 err = nl80211_parse_mesh_setup(info, &setup);
11260                 if (err)
11261                         return err;
11262         }
11263
11264         if (setup.user_mpm)
11265                 cfg.auto_open_plinks = false;
11266
11267         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11268                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11269                 if (err)
11270                         return err;
11271         } else {
11272                 /* __cfg80211_join_mesh() will sort it out */
11273                 setup.chandef.chan = NULL;
11274         }
11275
11276         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11277                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11278                 int n_rates =
11279                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11280                 struct ieee80211_supported_band *sband;
11281
11282                 if (!setup.chandef.chan)
11283                         return -EINVAL;
11284
11285                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11286
11287                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11288                                              &setup.basic_rates);
11289                 if (err)
11290                         return err;
11291         }
11292
11293         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11294                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11295                 if (err)
11296                         return err;
11297
11298                 if (!setup.chandef.chan)
11299                         return -EINVAL;
11300
11301                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11302                                               &setup.beacon_rate);
11303                 if (err)
11304                         return err;
11305         }
11306
11307         setup.userspace_handles_dfs =
11308                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11309
11310         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11311                 int r = validate_pae_over_nl80211(rdev, info);
11312
11313                 if (r < 0)
11314                         return r;
11315
11316                 setup.control_port_over_nl80211 = true;
11317         }
11318
11319         wdev_lock(dev->ieee80211_ptr);
11320         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11321         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11322                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11323         wdev_unlock(dev->ieee80211_ptr);
11324
11325         return err;
11326 }
11327
11328 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11329 {
11330         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11331         struct net_device *dev = info->user_ptr[1];
11332
11333         return cfg80211_leave_mesh(rdev, dev);
11334 }
11335
11336 #ifdef CONFIG_PM
11337 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11338                                         struct cfg80211_registered_device *rdev)
11339 {
11340         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11341         struct nlattr *nl_pats, *nl_pat;
11342         int i, pat_len;
11343
11344         if (!wowlan->n_patterns)
11345                 return 0;
11346
11347         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11348         if (!nl_pats)
11349                 return -ENOBUFS;
11350
11351         for (i = 0; i < wowlan->n_patterns; i++) {
11352                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11353                 if (!nl_pat)
11354                         return -ENOBUFS;
11355                 pat_len = wowlan->patterns[i].pattern_len;
11356                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11357                             wowlan->patterns[i].mask) ||
11358                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11359                             wowlan->patterns[i].pattern) ||
11360                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11361                                 wowlan->patterns[i].pkt_offset))
11362                         return -ENOBUFS;
11363                 nla_nest_end(msg, nl_pat);
11364         }
11365         nla_nest_end(msg, nl_pats);
11366
11367         return 0;
11368 }
11369
11370 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11371                                    struct cfg80211_wowlan_tcp *tcp)
11372 {
11373         struct nlattr *nl_tcp;
11374
11375         if (!tcp)
11376                 return 0;
11377
11378         nl_tcp = nla_nest_start_noflag(msg,
11379                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11380         if (!nl_tcp)
11381                 return -ENOBUFS;
11382
11383         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11384             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11385             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11386             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11387             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11388             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11389                     tcp->payload_len, tcp->payload) ||
11390             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11391                         tcp->data_interval) ||
11392             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11393                     tcp->wake_len, tcp->wake_data) ||
11394             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11395                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11396                 return -ENOBUFS;
11397
11398         if (tcp->payload_seq.len &&
11399             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11400                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11401                 return -ENOBUFS;
11402
11403         if (tcp->payload_tok.len &&
11404             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11405                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11406                     &tcp->payload_tok))
11407                 return -ENOBUFS;
11408
11409         nla_nest_end(msg, nl_tcp);
11410
11411         return 0;
11412 }
11413
11414 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11415                                   struct cfg80211_sched_scan_request *req)
11416 {
11417         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11418         int i;
11419
11420         if (!req)
11421                 return 0;
11422
11423         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11424         if (!nd)
11425                 return -ENOBUFS;
11426
11427         if (req->n_scan_plans == 1 &&
11428             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11429                         req->scan_plans[0].interval * 1000))
11430                 return -ENOBUFS;
11431
11432         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11433                 return -ENOBUFS;
11434
11435         if (req->relative_rssi_set) {
11436                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11437
11438                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11439                                req->relative_rssi))
11440                         return -ENOBUFS;
11441
11442                 rssi_adjust.band = req->rssi_adjust.band;
11443                 rssi_adjust.delta = req->rssi_adjust.delta;
11444                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11445                             sizeof(rssi_adjust), &rssi_adjust))
11446                         return -ENOBUFS;
11447         }
11448
11449         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11450         if (!freqs)
11451                 return -ENOBUFS;
11452
11453         for (i = 0; i < req->n_channels; i++) {
11454                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11455                         return -ENOBUFS;
11456         }
11457
11458         nla_nest_end(msg, freqs);
11459
11460         if (req->n_match_sets) {
11461                 matches = nla_nest_start_noflag(msg,
11462                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11463                 if (!matches)
11464                         return -ENOBUFS;
11465
11466                 for (i = 0; i < req->n_match_sets; i++) {
11467                         match = nla_nest_start_noflag(msg, i);
11468                         if (!match)
11469                                 return -ENOBUFS;
11470
11471                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11472                                     req->match_sets[i].ssid.ssid_len,
11473                                     req->match_sets[i].ssid.ssid))
11474                                 return -ENOBUFS;
11475                         nla_nest_end(msg, match);
11476                 }
11477                 nla_nest_end(msg, matches);
11478         }
11479
11480         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11481         if (!scan_plans)
11482                 return -ENOBUFS;
11483
11484         for (i = 0; i < req->n_scan_plans; i++) {
11485                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11486                 if (!scan_plan)
11487                         return -ENOBUFS;
11488
11489                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11490                                 req->scan_plans[i].interval) ||
11491                     (req->scan_plans[i].iterations &&
11492                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11493                                  req->scan_plans[i].iterations)))
11494                         return -ENOBUFS;
11495                 nla_nest_end(msg, scan_plan);
11496         }
11497         nla_nest_end(msg, scan_plans);
11498
11499         nla_nest_end(msg, nd);
11500
11501         return 0;
11502 }
11503
11504 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11505 {
11506         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11507         struct sk_buff *msg;
11508         void *hdr;
11509         u32 size = NLMSG_DEFAULT_SIZE;
11510
11511         if (!rdev->wiphy.wowlan)
11512                 return -EOPNOTSUPP;
11513
11514         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11515                 /* adjust size to have room for all the data */
11516                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11517                         rdev->wiphy.wowlan_config->tcp->payload_len +
11518                         rdev->wiphy.wowlan_config->tcp->wake_len +
11519                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11520         }
11521
11522         msg = nlmsg_new(size, GFP_KERNEL);
11523         if (!msg)
11524                 return -ENOMEM;
11525
11526         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11527                              NL80211_CMD_GET_WOWLAN);
11528         if (!hdr)
11529                 goto nla_put_failure;
11530
11531         if (rdev->wiphy.wowlan_config) {
11532                 struct nlattr *nl_wowlan;
11533
11534                 nl_wowlan = nla_nest_start_noflag(msg,
11535                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11536                 if (!nl_wowlan)
11537                         goto nla_put_failure;
11538
11539                 if ((rdev->wiphy.wowlan_config->any &&
11540                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11541                     (rdev->wiphy.wowlan_config->disconnect &&
11542                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11543                     (rdev->wiphy.wowlan_config->magic_pkt &&
11544                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11545                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11546                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11547                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11548                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11549                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11550                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11551                     (rdev->wiphy.wowlan_config->rfkill_release &&
11552                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11553                         goto nla_put_failure;
11554
11555                 if (nl80211_send_wowlan_patterns(msg, rdev))
11556                         goto nla_put_failure;
11557
11558                 if (nl80211_send_wowlan_tcp(msg,
11559                                             rdev->wiphy.wowlan_config->tcp))
11560                         goto nla_put_failure;
11561
11562                 if (nl80211_send_wowlan_nd(
11563                             msg,
11564                             rdev->wiphy.wowlan_config->nd_config))
11565                         goto nla_put_failure;
11566
11567                 nla_nest_end(msg, nl_wowlan);
11568         }
11569
11570         genlmsg_end(msg, hdr);
11571         return genlmsg_reply(msg, info);
11572
11573 nla_put_failure:
11574         nlmsg_free(msg);
11575         return -ENOBUFS;
11576 }
11577
11578 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11579                                     struct nlattr *attr,
11580                                     struct cfg80211_wowlan *trig)
11581 {
11582         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11583         struct cfg80211_wowlan_tcp *cfg;
11584         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11585         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11586         u32 size;
11587         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11588         int err, port;
11589
11590         if (!rdev->wiphy.wowlan->tcp)
11591                 return -EINVAL;
11592
11593         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11594                                           nl80211_wowlan_tcp_policy, NULL);
11595         if (err)
11596                 return err;
11597
11598         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11599             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11600             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11601             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11602             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11603             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11604             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11605             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11606                 return -EINVAL;
11607
11608         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11609         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11610                 return -EINVAL;
11611
11612         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11613                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11614             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11615                 return -EINVAL;
11616
11617         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11618         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11619                 return -EINVAL;
11620
11621         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11622         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11623                 return -EINVAL;
11624
11625         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11626                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11627
11628                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11629                 tokens_size = tokln - sizeof(*tok);
11630
11631                 if (!tok->len || tokens_size % tok->len)
11632                         return -EINVAL;
11633                 if (!rdev->wiphy.wowlan->tcp->tok)
11634                         return -EINVAL;
11635                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11636                         return -EINVAL;
11637                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11638                         return -EINVAL;
11639                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11640                         return -EINVAL;
11641                 if (tok->offset + tok->len > data_size)
11642                         return -EINVAL;
11643         }
11644
11645         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11646                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11647                 if (!rdev->wiphy.wowlan->tcp->seq)
11648                         return -EINVAL;
11649                 if (seq->len == 0 || seq->len > 4)
11650                         return -EINVAL;
11651                 if (seq->len + seq->offset > data_size)
11652                         return -EINVAL;
11653         }
11654
11655         size = sizeof(*cfg);
11656         size += data_size;
11657         size += wake_size + wake_mask_size;
11658         size += tokens_size;
11659
11660         cfg = kzalloc(size, GFP_KERNEL);
11661         if (!cfg)
11662                 return -ENOMEM;
11663         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11664         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11665         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11666                ETH_ALEN);
11667         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11668                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11669         else
11670                 port = 0;
11671 #ifdef CONFIG_INET
11672         /* allocate a socket and port for it and use it */
11673         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11674                             IPPROTO_TCP, &cfg->sock, 1);
11675         if (err) {
11676                 kfree(cfg);
11677                 return err;
11678         }
11679         if (inet_csk_get_port(cfg->sock->sk, port)) {
11680                 sock_release(cfg->sock);
11681                 kfree(cfg);
11682                 return -EADDRINUSE;
11683         }
11684         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11685 #else
11686         if (!port) {
11687                 kfree(cfg);
11688                 return -EINVAL;
11689         }
11690         cfg->src_port = port;
11691 #endif
11692
11693         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11694         cfg->payload_len = data_size;
11695         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11696         memcpy((void *)cfg->payload,
11697                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11698                data_size);
11699         if (seq)
11700                 cfg->payload_seq = *seq;
11701         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11702         cfg->wake_len = wake_size;
11703         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11704         memcpy((void *)cfg->wake_data,
11705                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11706                wake_size);
11707         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11708                          data_size + wake_size;
11709         memcpy((void *)cfg->wake_mask,
11710                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11711                wake_mask_size);
11712         if (tok) {
11713                 cfg->tokens_size = tokens_size;
11714                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11715         }
11716
11717         trig->tcp = cfg;
11718
11719         return 0;
11720 }
11721
11722 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11723                                    const struct wiphy_wowlan_support *wowlan,
11724                                    struct nlattr *attr,
11725                                    struct cfg80211_wowlan *trig)
11726 {
11727         struct nlattr **tb;
11728         int err;
11729
11730         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11731         if (!tb)
11732                 return -ENOMEM;
11733
11734         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11735                 err = -EOPNOTSUPP;
11736                 goto out;
11737         }
11738
11739         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11740                                           nl80211_policy, NULL);
11741         if (err)
11742                 goto out;
11743
11744         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11745                                                    wowlan->max_nd_match_sets);
11746         err = PTR_ERR_OR_ZERO(trig->nd_config);
11747         if (err)
11748                 trig->nd_config = NULL;
11749
11750 out:
11751         kfree(tb);
11752         return err;
11753 }
11754
11755 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11756 {
11757         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11758         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11759         struct cfg80211_wowlan new_triggers = {};
11760         struct cfg80211_wowlan *ntrig;
11761         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11762         int err, i;
11763         bool prev_enabled = rdev->wiphy.wowlan_config;
11764         bool regular = false;
11765
11766         if (!wowlan)
11767                 return -EOPNOTSUPP;
11768
11769         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11770                 cfg80211_rdev_free_wowlan(rdev);
11771                 rdev->wiphy.wowlan_config = NULL;
11772                 goto set_wakeup;
11773         }
11774
11775         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11776                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11777                                           nl80211_wowlan_policy, info->extack);
11778         if (err)
11779                 return err;
11780
11781         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11782                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11783                         return -EINVAL;
11784                 new_triggers.any = true;
11785         }
11786
11787         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11788                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11789                         return -EINVAL;
11790                 new_triggers.disconnect = true;
11791                 regular = true;
11792         }
11793
11794         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11795                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11796                         return -EINVAL;
11797                 new_triggers.magic_pkt = true;
11798                 regular = true;
11799         }
11800
11801         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11802                 return -EINVAL;
11803
11804         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11805                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11806                         return -EINVAL;
11807                 new_triggers.gtk_rekey_failure = true;
11808                 regular = true;
11809         }
11810
11811         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11812                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11813                         return -EINVAL;
11814                 new_triggers.eap_identity_req = true;
11815                 regular = true;
11816         }
11817
11818         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11819                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11820                         return -EINVAL;
11821                 new_triggers.four_way_handshake = true;
11822                 regular = true;
11823         }
11824
11825         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11826                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11827                         return -EINVAL;
11828                 new_triggers.rfkill_release = true;
11829                 regular = true;
11830         }
11831
11832         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11833                 struct nlattr *pat;
11834                 int n_patterns = 0;
11835                 int rem, pat_len, mask_len, pkt_offset;
11836                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11837
11838                 regular = true;
11839
11840                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11841                                     rem)
11842                         n_patterns++;
11843                 if (n_patterns > wowlan->n_patterns)
11844                         return -EINVAL;
11845
11846                 new_triggers.patterns = kcalloc(n_patterns,
11847                                                 sizeof(new_triggers.patterns[0]),
11848                                                 GFP_KERNEL);
11849                 if (!new_triggers.patterns)
11850                         return -ENOMEM;
11851
11852                 new_triggers.n_patterns = n_patterns;
11853                 i = 0;
11854
11855                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11856                                     rem) {
11857                         u8 *mask_pat;
11858
11859                         err = nla_parse_nested_deprecated(pat_tb,
11860                                                           MAX_NL80211_PKTPAT,
11861                                                           pat,
11862                                                           nl80211_packet_pattern_policy,
11863                                                           info->extack);
11864                         if (err)
11865                                 goto error;
11866
11867                         err = -EINVAL;
11868                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11869                             !pat_tb[NL80211_PKTPAT_PATTERN])
11870                                 goto error;
11871                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11872                         mask_len = DIV_ROUND_UP(pat_len, 8);
11873                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11874                                 goto error;
11875                         if (pat_len > wowlan->pattern_max_len ||
11876                             pat_len < wowlan->pattern_min_len)
11877                                 goto error;
11878
11879                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11880                                 pkt_offset = 0;
11881                         else
11882                                 pkt_offset = nla_get_u32(
11883                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11884                         if (pkt_offset > wowlan->max_pkt_offset)
11885                                 goto error;
11886                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11887
11888                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11889                         if (!mask_pat) {
11890                                 err = -ENOMEM;
11891                                 goto error;
11892                         }
11893                         new_triggers.patterns[i].mask = mask_pat;
11894                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11895                                mask_len);
11896                         mask_pat += mask_len;
11897                         new_triggers.patterns[i].pattern = mask_pat;
11898                         new_triggers.patterns[i].pattern_len = pat_len;
11899                         memcpy(mask_pat,
11900                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11901                                pat_len);
11902                         i++;
11903                 }
11904         }
11905
11906         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11907                 regular = true;
11908                 err = nl80211_parse_wowlan_tcp(
11909                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11910                         &new_triggers);
11911                 if (err)
11912                         goto error;
11913         }
11914
11915         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11916                 regular = true;
11917                 err = nl80211_parse_wowlan_nd(
11918                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11919                         &new_triggers);
11920                 if (err)
11921                         goto error;
11922         }
11923
11924         /* The 'any' trigger means the device continues operating more or less
11925          * as in its normal operation mode and wakes up the host on most of the
11926          * normal interrupts (like packet RX, ...)
11927          * It therefore makes little sense to combine with the more constrained
11928          * wakeup trigger modes.
11929          */
11930         if (new_triggers.any && regular) {
11931                 err = -EINVAL;
11932                 goto error;
11933         }
11934
11935         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11936         if (!ntrig) {
11937                 err = -ENOMEM;
11938                 goto error;
11939         }
11940         cfg80211_rdev_free_wowlan(rdev);
11941         rdev->wiphy.wowlan_config = ntrig;
11942
11943  set_wakeup:
11944         if (rdev->ops->set_wakeup &&
11945             prev_enabled != !!rdev->wiphy.wowlan_config)
11946                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11947
11948         return 0;
11949  error:
11950         for (i = 0; i < new_triggers.n_patterns; i++)
11951                 kfree(new_triggers.patterns[i].mask);
11952         kfree(new_triggers.patterns);
11953         if (new_triggers.tcp && new_triggers.tcp->sock)
11954                 sock_release(new_triggers.tcp->sock);
11955         kfree(new_triggers.tcp);
11956         kfree(new_triggers.nd_config);
11957         return err;
11958 }
11959 #endif
11960
11961 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11962                                        struct cfg80211_registered_device *rdev)
11963 {
11964         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11965         int i, j, pat_len;
11966         struct cfg80211_coalesce_rules *rule;
11967
11968         if (!rdev->coalesce->n_rules)
11969                 return 0;
11970
11971         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11972         if (!nl_rules)
11973                 return -ENOBUFS;
11974
11975         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11976                 nl_rule = nla_nest_start_noflag(msg, i + 1);
11977                 if (!nl_rule)
11978                         return -ENOBUFS;
11979
11980                 rule = &rdev->coalesce->rules[i];
11981                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11982                                 rule->delay))
11983                         return -ENOBUFS;
11984
11985                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11986                                 rule->condition))
11987                         return -ENOBUFS;
11988
11989                 nl_pats = nla_nest_start_noflag(msg,
11990                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11991                 if (!nl_pats)
11992                         return -ENOBUFS;
11993
11994                 for (j = 0; j < rule->n_patterns; j++) {
11995                         nl_pat = nla_nest_start_noflag(msg, j + 1);
11996                         if (!nl_pat)
11997                                 return -ENOBUFS;
11998                         pat_len = rule->patterns[j].pattern_len;
11999                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12000                                     DIV_ROUND_UP(pat_len, 8),
12001                                     rule->patterns[j].mask) ||
12002                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12003                                     rule->patterns[j].pattern) ||
12004                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12005                                         rule->patterns[j].pkt_offset))
12006                                 return -ENOBUFS;
12007                         nla_nest_end(msg, nl_pat);
12008                 }
12009                 nla_nest_end(msg, nl_pats);
12010                 nla_nest_end(msg, nl_rule);
12011         }
12012         nla_nest_end(msg, nl_rules);
12013
12014         return 0;
12015 }
12016
12017 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12018 {
12019         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12020         struct sk_buff *msg;
12021         void *hdr;
12022
12023         if (!rdev->wiphy.coalesce)
12024                 return -EOPNOTSUPP;
12025
12026         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12027         if (!msg)
12028                 return -ENOMEM;
12029
12030         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12031                              NL80211_CMD_GET_COALESCE);
12032         if (!hdr)
12033                 goto nla_put_failure;
12034
12035         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12036                 goto nla_put_failure;
12037
12038         genlmsg_end(msg, hdr);
12039         return genlmsg_reply(msg, info);
12040
12041 nla_put_failure:
12042         nlmsg_free(msg);
12043         return -ENOBUFS;
12044 }
12045
12046 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12047 {
12048         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12049         int i, j;
12050         struct cfg80211_coalesce_rules *rule;
12051
12052         if (!coalesce)
12053                 return;
12054
12055         for (i = 0; i < coalesce->n_rules; i++) {
12056                 rule = &coalesce->rules[i];
12057                 for (j = 0; j < rule->n_patterns; j++)
12058                         kfree(rule->patterns[j].mask);
12059                 kfree(rule->patterns);
12060         }
12061         kfree(coalesce->rules);
12062         kfree(coalesce);
12063         rdev->coalesce = NULL;
12064 }
12065
12066 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12067                                        struct nlattr *rule,
12068                                        struct cfg80211_coalesce_rules *new_rule)
12069 {
12070         int err, i;
12071         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12072         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12073         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12074         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12075
12076         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12077                                           rule, nl80211_coalesce_policy, NULL);
12078         if (err)
12079                 return err;
12080
12081         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12082                 new_rule->delay =
12083                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12084         if (new_rule->delay > coalesce->max_delay)
12085                 return -EINVAL;
12086
12087         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12088                 new_rule->condition =
12089                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12090
12091         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12092                 return -EINVAL;
12093
12094         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12095                             rem)
12096                 n_patterns++;
12097         if (n_patterns > coalesce->n_patterns)
12098                 return -EINVAL;
12099
12100         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12101                                      GFP_KERNEL);
12102         if (!new_rule->patterns)
12103                 return -ENOMEM;
12104
12105         new_rule->n_patterns = n_patterns;
12106         i = 0;
12107
12108         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12109                             rem) {
12110                 u8 *mask_pat;
12111
12112                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12113                                                   pat,
12114                                                   nl80211_packet_pattern_policy,
12115                                                   NULL);
12116                 if (err)
12117                         return err;
12118
12119                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12120                     !pat_tb[NL80211_PKTPAT_PATTERN])
12121                         return -EINVAL;
12122                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12123                 mask_len = DIV_ROUND_UP(pat_len, 8);
12124                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12125                         return -EINVAL;
12126                 if (pat_len > coalesce->pattern_max_len ||
12127                     pat_len < coalesce->pattern_min_len)
12128                         return -EINVAL;
12129
12130                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12131                         pkt_offset = 0;
12132                 else
12133                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12134                 if (pkt_offset > coalesce->max_pkt_offset)
12135                         return -EINVAL;
12136                 new_rule->patterns[i].pkt_offset = pkt_offset;
12137
12138                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12139                 if (!mask_pat)
12140                         return -ENOMEM;
12141
12142                 new_rule->patterns[i].mask = mask_pat;
12143                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12144                        mask_len);
12145
12146                 mask_pat += mask_len;
12147                 new_rule->patterns[i].pattern = mask_pat;
12148                 new_rule->patterns[i].pattern_len = pat_len;
12149                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12150                        pat_len);
12151                 i++;
12152         }
12153
12154         return 0;
12155 }
12156
12157 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12158 {
12159         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12160         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12161         struct cfg80211_coalesce new_coalesce = {};
12162         struct cfg80211_coalesce *n_coalesce;
12163         int err, rem_rule, n_rules = 0, i, j;
12164         struct nlattr *rule;
12165         struct cfg80211_coalesce_rules *tmp_rule;
12166
12167         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12168                 return -EOPNOTSUPP;
12169
12170         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12171                 cfg80211_rdev_free_coalesce(rdev);
12172                 rdev_set_coalesce(rdev, NULL);
12173                 return 0;
12174         }
12175
12176         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12177                             rem_rule)
12178                 n_rules++;
12179         if (n_rules > coalesce->n_rules)
12180                 return -EINVAL;
12181
12182         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12183                                      GFP_KERNEL);
12184         if (!new_coalesce.rules)
12185                 return -ENOMEM;
12186
12187         new_coalesce.n_rules = n_rules;
12188         i = 0;
12189
12190         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12191                             rem_rule) {
12192                 err = nl80211_parse_coalesce_rule(rdev, rule,
12193                                                   &new_coalesce.rules[i]);
12194                 if (err)
12195                         goto error;
12196
12197                 i++;
12198         }
12199
12200         err = rdev_set_coalesce(rdev, &new_coalesce);
12201         if (err)
12202                 goto error;
12203
12204         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12205         if (!n_coalesce) {
12206                 err = -ENOMEM;
12207                 goto error;
12208         }
12209         cfg80211_rdev_free_coalesce(rdev);
12210         rdev->coalesce = n_coalesce;
12211
12212         return 0;
12213 error:
12214         for (i = 0; i < new_coalesce.n_rules; i++) {
12215                 tmp_rule = &new_coalesce.rules[i];
12216                 for (j = 0; j < tmp_rule->n_patterns; j++)
12217                         kfree(tmp_rule->patterns[j].mask);
12218                 kfree(tmp_rule->patterns);
12219         }
12220         kfree(new_coalesce.rules);
12221
12222         return err;
12223 }
12224
12225 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12226 {
12227         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12228         struct net_device *dev = info->user_ptr[1];
12229         struct wireless_dev *wdev = dev->ieee80211_ptr;
12230         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12231         struct cfg80211_gtk_rekey_data rekey_data;
12232         int err;
12233
12234         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12235                 return -EINVAL;
12236
12237         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12238                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12239                                           nl80211_rekey_policy, info->extack);
12240         if (err)
12241                 return err;
12242
12243         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12244             !tb[NL80211_REKEY_DATA_KCK])
12245                 return -EINVAL;
12246         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12247                 return -ERANGE;
12248         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12249                 return -ERANGE;
12250         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12251                 return -ERANGE;
12252
12253         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12254         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12255         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12256
12257         wdev_lock(wdev);
12258         if (!wdev->current_bss) {
12259                 err = -ENOTCONN;
12260                 goto out;
12261         }
12262
12263         if (!rdev->ops->set_rekey_data) {
12264                 err = -EOPNOTSUPP;
12265                 goto out;
12266         }
12267
12268         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12269  out:
12270         wdev_unlock(wdev);
12271         return err;
12272 }
12273
12274 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12275                                              struct genl_info *info)
12276 {
12277         struct net_device *dev = info->user_ptr[1];
12278         struct wireless_dev *wdev = dev->ieee80211_ptr;
12279
12280         if (wdev->iftype != NL80211_IFTYPE_AP &&
12281             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12282                 return -EINVAL;
12283
12284         if (wdev->ap_unexpected_nlportid)
12285                 return -EBUSY;
12286
12287         wdev->ap_unexpected_nlportid = info->snd_portid;
12288         return 0;
12289 }
12290
12291 static int nl80211_probe_client(struct sk_buff *skb,
12292                                 struct genl_info *info)
12293 {
12294         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12295         struct net_device *dev = info->user_ptr[1];
12296         struct wireless_dev *wdev = dev->ieee80211_ptr;
12297         struct sk_buff *msg;
12298         void *hdr;
12299         const u8 *addr;
12300         u64 cookie;
12301         int err;
12302
12303         if (wdev->iftype != NL80211_IFTYPE_AP &&
12304             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12305                 return -EOPNOTSUPP;
12306
12307         if (!info->attrs[NL80211_ATTR_MAC])
12308                 return -EINVAL;
12309
12310         if (!rdev->ops->probe_client)
12311                 return -EOPNOTSUPP;
12312
12313         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12314         if (!msg)
12315                 return -ENOMEM;
12316
12317         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12318                              NL80211_CMD_PROBE_CLIENT);
12319         if (!hdr) {
12320                 err = -ENOBUFS;
12321                 goto free_msg;
12322         }
12323
12324         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12325
12326         err = rdev_probe_client(rdev, dev, addr, &cookie);
12327         if (err)
12328                 goto free_msg;
12329
12330         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12331                               NL80211_ATTR_PAD))
12332                 goto nla_put_failure;
12333
12334         genlmsg_end(msg, hdr);
12335
12336         return genlmsg_reply(msg, info);
12337
12338  nla_put_failure:
12339         err = -ENOBUFS;
12340  free_msg:
12341         nlmsg_free(msg);
12342         return err;
12343 }
12344
12345 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12346 {
12347         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12348         struct cfg80211_beacon_registration *reg, *nreg;
12349         int rv;
12350
12351         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12352                 return -EOPNOTSUPP;
12353
12354         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12355         if (!nreg)
12356                 return -ENOMEM;
12357
12358         /* First, check if already registered. */
12359         spin_lock_bh(&rdev->beacon_registrations_lock);
12360         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12361                 if (reg->nlportid == info->snd_portid) {
12362                         rv = -EALREADY;
12363                         goto out_err;
12364                 }
12365         }
12366         /* Add it to the list */
12367         nreg->nlportid = info->snd_portid;
12368         list_add(&nreg->list, &rdev->beacon_registrations);
12369
12370         spin_unlock_bh(&rdev->beacon_registrations_lock);
12371
12372         return 0;
12373 out_err:
12374         spin_unlock_bh(&rdev->beacon_registrations_lock);
12375         kfree(nreg);
12376         return rv;
12377 }
12378
12379 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12380 {
12381         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12382         struct wireless_dev *wdev = info->user_ptr[1];
12383         int err;
12384
12385         if (!rdev->ops->start_p2p_device)
12386                 return -EOPNOTSUPP;
12387
12388         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12389                 return -EOPNOTSUPP;
12390
12391         if (wdev_running(wdev))
12392                 return 0;
12393
12394         if (rfkill_blocked(rdev->rfkill))
12395                 return -ERFKILL;
12396
12397         err = rdev_start_p2p_device(rdev, wdev);
12398         if (err)
12399                 return err;
12400
12401         wdev->is_running = true;
12402         rdev->opencount++;
12403
12404         return 0;
12405 }
12406
12407 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12408 {
12409         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12410         struct wireless_dev *wdev = info->user_ptr[1];
12411
12412         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12413                 return -EOPNOTSUPP;
12414
12415         if (!rdev->ops->stop_p2p_device)
12416                 return -EOPNOTSUPP;
12417
12418         cfg80211_stop_p2p_device(rdev, wdev);
12419
12420         return 0;
12421 }
12422
12423 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12424 {
12425         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12426         struct wireless_dev *wdev = info->user_ptr[1];
12427         struct cfg80211_nan_conf conf = {};
12428         int err;
12429
12430         if (wdev->iftype != NL80211_IFTYPE_NAN)
12431                 return -EOPNOTSUPP;
12432
12433         if (wdev_running(wdev))
12434                 return -EEXIST;
12435
12436         if (rfkill_blocked(rdev->rfkill))
12437                 return -ERFKILL;
12438
12439         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12440                 return -EINVAL;
12441
12442         conf.master_pref =
12443                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12444
12445         if (info->attrs[NL80211_ATTR_BANDS]) {
12446                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12447
12448                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12449                         return -EOPNOTSUPP;
12450
12451                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12452                         return -EINVAL;
12453
12454                 conf.bands = bands;
12455         }
12456
12457         err = rdev_start_nan(rdev, wdev, &conf);
12458         if (err)
12459                 return err;
12460
12461         wdev->is_running = true;
12462         rdev->opencount++;
12463
12464         return 0;
12465 }
12466
12467 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12468 {
12469         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12470         struct wireless_dev *wdev = info->user_ptr[1];
12471
12472         if (wdev->iftype != NL80211_IFTYPE_NAN)
12473                 return -EOPNOTSUPP;
12474
12475         cfg80211_stop_nan(rdev, wdev);
12476
12477         return 0;
12478 }
12479
12480 static int validate_nan_filter(struct nlattr *filter_attr)
12481 {
12482         struct nlattr *attr;
12483         int len = 0, n_entries = 0, rem;
12484
12485         nla_for_each_nested(attr, filter_attr, rem) {
12486                 len += nla_len(attr);
12487                 n_entries++;
12488         }
12489
12490         if (len >= U8_MAX)
12491                 return -EINVAL;
12492
12493         return n_entries;
12494 }
12495
12496 static int handle_nan_filter(struct nlattr *attr_filter,
12497                              struct cfg80211_nan_func *func,
12498                              bool tx)
12499 {
12500         struct nlattr *attr;
12501         int n_entries, rem, i;
12502         struct cfg80211_nan_func_filter *filter;
12503
12504         n_entries = validate_nan_filter(attr_filter);
12505         if (n_entries < 0)
12506                 return n_entries;
12507
12508         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12509
12510         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12511         if (!filter)
12512                 return -ENOMEM;
12513
12514         i = 0;
12515         nla_for_each_nested(attr, attr_filter, rem) {
12516                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12517                 filter[i].len = nla_len(attr);
12518                 i++;
12519         }
12520         if (tx) {
12521                 func->num_tx_filters = n_entries;
12522                 func->tx_filters = filter;
12523         } else {
12524                 func->num_rx_filters = n_entries;
12525                 func->rx_filters = filter;
12526         }
12527
12528         return 0;
12529 }
12530
12531 static int nl80211_nan_add_func(struct sk_buff *skb,
12532                                 struct genl_info *info)
12533 {
12534         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12535         struct wireless_dev *wdev = info->user_ptr[1];
12536         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12537         struct cfg80211_nan_func *func;
12538         struct sk_buff *msg = NULL;
12539         void *hdr = NULL;
12540         int err = 0;
12541
12542         if (wdev->iftype != NL80211_IFTYPE_NAN)
12543                 return -EOPNOTSUPP;
12544
12545         if (!wdev_running(wdev))
12546                 return -ENOTCONN;
12547
12548         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12549                 return -EINVAL;
12550
12551         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12552                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12553                                           nl80211_nan_func_policy,
12554                                           info->extack);
12555         if (err)
12556                 return err;
12557
12558         func = kzalloc(sizeof(*func), GFP_KERNEL);
12559         if (!func)
12560                 return -ENOMEM;
12561
12562         func->cookie = cfg80211_assign_cookie(rdev);
12563
12564         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12565             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12566                 err = -EINVAL;
12567                 goto out;
12568         }
12569
12570
12571         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12572
12573         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12574                 err = -EINVAL;
12575                 goto out;
12576         }
12577
12578         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12579                sizeof(func->service_id));
12580
12581         func->close_range =
12582                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12583
12584         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12585                 func->serv_spec_info_len =
12586                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12587                 func->serv_spec_info =
12588                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12589                                 func->serv_spec_info_len,
12590                                 GFP_KERNEL);
12591                 if (!func->serv_spec_info) {
12592                         err = -ENOMEM;
12593                         goto out;
12594                 }
12595         }
12596
12597         if (tb[NL80211_NAN_FUNC_TTL])
12598                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12599
12600         switch (func->type) {
12601         case NL80211_NAN_FUNC_PUBLISH:
12602                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12603                         err = -EINVAL;
12604                         goto out;
12605                 }
12606
12607                 func->publish_type =
12608                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12609                 func->publish_bcast =
12610                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12611
12612                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12613                         func->publish_bcast) {
12614                         err = -EINVAL;
12615                         goto out;
12616                 }
12617                 break;
12618         case NL80211_NAN_FUNC_SUBSCRIBE:
12619                 func->subscribe_active =
12620                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12621                 break;
12622         case NL80211_NAN_FUNC_FOLLOW_UP:
12623                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12624                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12625                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12626                         err = -EINVAL;
12627                         goto out;
12628                 }
12629
12630                 func->followup_id =
12631                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12632                 func->followup_reqid =
12633                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12634                 memcpy(func->followup_dest.addr,
12635                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12636                        sizeof(func->followup_dest.addr));
12637                 if (func->ttl) {
12638                         err = -EINVAL;
12639                         goto out;
12640                 }
12641                 break;
12642         default:
12643                 err = -EINVAL;
12644                 goto out;
12645         }
12646
12647         if (tb[NL80211_NAN_FUNC_SRF]) {
12648                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12649
12650                 err = nla_parse_nested_deprecated(srf_tb,
12651                                                   NL80211_NAN_SRF_ATTR_MAX,
12652                                                   tb[NL80211_NAN_FUNC_SRF],
12653                                                   nl80211_nan_srf_policy,
12654                                                   info->extack);
12655                 if (err)
12656                         goto out;
12657
12658                 func->srf_include =
12659                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12660
12661                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12662                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12663                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12664                                 err = -EINVAL;
12665                                 goto out;
12666                         }
12667
12668                         func->srf_bf_len =
12669                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12670                         func->srf_bf =
12671                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12672                                         func->srf_bf_len, GFP_KERNEL);
12673                         if (!func->srf_bf) {
12674                                 err = -ENOMEM;
12675                                 goto out;
12676                         }
12677
12678                         func->srf_bf_idx =
12679                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12680                 } else {
12681                         struct nlattr *attr, *mac_attr =
12682                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12683                         int n_entries, rem, i = 0;
12684
12685                         if (!mac_attr) {
12686                                 err = -EINVAL;
12687                                 goto out;
12688                         }
12689
12690                         n_entries = validate_acl_mac_addrs(mac_attr);
12691                         if (n_entries <= 0) {
12692                                 err = -EINVAL;
12693                                 goto out;
12694                         }
12695
12696                         func->srf_num_macs = n_entries;
12697                         func->srf_macs =
12698                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12699                                         GFP_KERNEL);
12700                         if (!func->srf_macs) {
12701                                 err = -ENOMEM;
12702                                 goto out;
12703                         }
12704
12705                         nla_for_each_nested(attr, mac_attr, rem)
12706                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12707                                        sizeof(*func->srf_macs));
12708                 }
12709         }
12710
12711         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12712                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12713                                         func, true);
12714                 if (err)
12715                         goto out;
12716         }
12717
12718         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12719                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12720                                         func, false);
12721                 if (err)
12722                         goto out;
12723         }
12724
12725         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12726         if (!msg) {
12727                 err = -ENOMEM;
12728                 goto out;
12729         }
12730
12731         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12732                              NL80211_CMD_ADD_NAN_FUNCTION);
12733         /* This can't really happen - we just allocated 4KB */
12734         if (WARN_ON(!hdr)) {
12735                 err = -ENOMEM;
12736                 goto out;
12737         }
12738
12739         err = rdev_add_nan_func(rdev, wdev, func);
12740 out:
12741         if (err < 0) {
12742                 cfg80211_free_nan_func(func);
12743                 nlmsg_free(msg);
12744                 return err;
12745         }
12746
12747         /* propagate the instance id and cookie to userspace  */
12748         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12749                               NL80211_ATTR_PAD))
12750                 goto nla_put_failure;
12751
12752         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12753         if (!func_attr)
12754                 goto nla_put_failure;
12755
12756         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12757                        func->instance_id))
12758                 goto nla_put_failure;
12759
12760         nla_nest_end(msg, func_attr);
12761
12762         genlmsg_end(msg, hdr);
12763         return genlmsg_reply(msg, info);
12764
12765 nla_put_failure:
12766         nlmsg_free(msg);
12767         return -ENOBUFS;
12768 }
12769
12770 static int nl80211_nan_del_func(struct sk_buff *skb,
12771                                struct genl_info *info)
12772 {
12773         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12774         struct wireless_dev *wdev = info->user_ptr[1];
12775         u64 cookie;
12776
12777         if (wdev->iftype != NL80211_IFTYPE_NAN)
12778                 return -EOPNOTSUPP;
12779
12780         if (!wdev_running(wdev))
12781                 return -ENOTCONN;
12782
12783         if (!info->attrs[NL80211_ATTR_COOKIE])
12784                 return -EINVAL;
12785
12786         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12787
12788         rdev_del_nan_func(rdev, wdev, cookie);
12789
12790         return 0;
12791 }
12792
12793 static int nl80211_nan_change_config(struct sk_buff *skb,
12794                                      struct genl_info *info)
12795 {
12796         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12797         struct wireless_dev *wdev = info->user_ptr[1];
12798         struct cfg80211_nan_conf conf = {};
12799         u32 changed = 0;
12800
12801         if (wdev->iftype != NL80211_IFTYPE_NAN)
12802                 return -EOPNOTSUPP;
12803
12804         if (!wdev_running(wdev))
12805                 return -ENOTCONN;
12806
12807         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12808                 conf.master_pref =
12809                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12810                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12811                         return -EINVAL;
12812
12813                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12814         }
12815
12816         if (info->attrs[NL80211_ATTR_BANDS]) {
12817                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12818
12819                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12820                         return -EOPNOTSUPP;
12821
12822                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12823                         return -EINVAL;
12824
12825                 conf.bands = bands;
12826                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12827         }
12828
12829         if (!changed)
12830                 return -EINVAL;
12831
12832         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12833 }
12834
12835 void cfg80211_nan_match(struct wireless_dev *wdev,
12836                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12837 {
12838         struct wiphy *wiphy = wdev->wiphy;
12839         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12840         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12841         struct sk_buff *msg;
12842         void *hdr;
12843
12844         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12845                 return;
12846
12847         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12848         if (!msg)
12849                 return;
12850
12851         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12852         if (!hdr) {
12853                 nlmsg_free(msg);
12854                 return;
12855         }
12856
12857         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12858             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12859                                          wdev->netdev->ifindex)) ||
12860             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12861                               NL80211_ATTR_PAD))
12862                 goto nla_put_failure;
12863
12864         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12865                               NL80211_ATTR_PAD) ||
12866             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12867                 goto nla_put_failure;
12868
12869         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12870         if (!match_attr)
12871                 goto nla_put_failure;
12872
12873         local_func_attr = nla_nest_start_noflag(msg,
12874                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12875         if (!local_func_attr)
12876                 goto nla_put_failure;
12877
12878         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12879                 goto nla_put_failure;
12880
12881         nla_nest_end(msg, local_func_attr);
12882
12883         peer_func_attr = nla_nest_start_noflag(msg,
12884                                                NL80211_NAN_MATCH_FUNC_PEER);
12885         if (!peer_func_attr)
12886                 goto nla_put_failure;
12887
12888         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12889             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12890                 goto nla_put_failure;
12891
12892         if (match->info && match->info_len &&
12893             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12894                     match->info))
12895                 goto nla_put_failure;
12896
12897         nla_nest_end(msg, peer_func_attr);
12898         nla_nest_end(msg, match_attr);
12899         genlmsg_end(msg, hdr);
12900
12901         if (!wdev->owner_nlportid)
12902                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12903                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12904         else
12905                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12906                                 wdev->owner_nlportid);
12907
12908         return;
12909
12910 nla_put_failure:
12911         nlmsg_free(msg);
12912 }
12913 EXPORT_SYMBOL(cfg80211_nan_match);
12914
12915 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12916                                   u8 inst_id,
12917                                   enum nl80211_nan_func_term_reason reason,
12918                                   u64 cookie, gfp_t gfp)
12919 {
12920         struct wiphy *wiphy = wdev->wiphy;
12921         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12922         struct sk_buff *msg;
12923         struct nlattr *func_attr;
12924         void *hdr;
12925
12926         if (WARN_ON(!inst_id))
12927                 return;
12928
12929         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12930         if (!msg)
12931                 return;
12932
12933         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12934         if (!hdr) {
12935                 nlmsg_free(msg);
12936                 return;
12937         }
12938
12939         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12940             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12941                                          wdev->netdev->ifindex)) ||
12942             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12943                               NL80211_ATTR_PAD))
12944                 goto nla_put_failure;
12945
12946         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12947                               NL80211_ATTR_PAD))
12948                 goto nla_put_failure;
12949
12950         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12951         if (!func_attr)
12952                 goto nla_put_failure;
12953
12954         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12955             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12956                 goto nla_put_failure;
12957
12958         nla_nest_end(msg, func_attr);
12959         genlmsg_end(msg, hdr);
12960
12961         if (!wdev->owner_nlportid)
12962                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12963                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12964         else
12965                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12966                                 wdev->owner_nlportid);
12967
12968         return;
12969
12970 nla_put_failure:
12971         nlmsg_free(msg);
12972 }
12973 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12974
12975 static int nl80211_get_protocol_features(struct sk_buff *skb,
12976                                          struct genl_info *info)
12977 {
12978         void *hdr;
12979         struct sk_buff *msg;
12980
12981         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12982         if (!msg)
12983                 return -ENOMEM;
12984
12985         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12986                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12987         if (!hdr)
12988                 goto nla_put_failure;
12989
12990         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12991                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12992                 goto nla_put_failure;
12993
12994         genlmsg_end(msg, hdr);
12995         return genlmsg_reply(msg, info);
12996
12997  nla_put_failure:
12998         kfree_skb(msg);
12999         return -ENOBUFS;
13000 }
13001
13002 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13003 {
13004         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13005         struct cfg80211_update_ft_ies_params ft_params;
13006         struct net_device *dev = info->user_ptr[1];
13007
13008         if (!rdev->ops->update_ft_ies)
13009                 return -EOPNOTSUPP;
13010
13011         if (!info->attrs[NL80211_ATTR_MDID] ||
13012             !info->attrs[NL80211_ATTR_IE])
13013                 return -EINVAL;
13014
13015         memset(&ft_params, 0, sizeof(ft_params));
13016         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13017         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13018         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13019
13020         return rdev_update_ft_ies(rdev, dev, &ft_params);
13021 }
13022
13023 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13024                                        struct genl_info *info)
13025 {
13026         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13027         struct wireless_dev *wdev = info->user_ptr[1];
13028         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13029         u16 duration;
13030         int ret;
13031
13032         if (!rdev->ops->crit_proto_start)
13033                 return -EOPNOTSUPP;
13034
13035         if (WARN_ON(!rdev->ops->crit_proto_stop))
13036                 return -EINVAL;
13037
13038         if (rdev->crit_proto_nlportid)
13039                 return -EBUSY;
13040
13041         /* determine protocol if provided */
13042         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13043                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13044
13045         if (proto >= NUM_NL80211_CRIT_PROTO)
13046                 return -EINVAL;
13047
13048         /* timeout must be provided */
13049         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13050                 return -EINVAL;
13051
13052         duration =
13053                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13054
13055         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
13056                 return -ERANGE;
13057
13058         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13059         if (!ret)
13060                 rdev->crit_proto_nlportid = info->snd_portid;
13061
13062         return ret;
13063 }
13064
13065 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13066                                       struct genl_info *info)
13067 {
13068         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13069         struct wireless_dev *wdev = info->user_ptr[1];
13070
13071         if (!rdev->ops->crit_proto_stop)
13072                 return -EOPNOTSUPP;
13073
13074         if (rdev->crit_proto_nlportid) {
13075                 rdev->crit_proto_nlportid = 0;
13076                 rdev_crit_proto_stop(rdev, wdev);
13077         }
13078         return 0;
13079 }
13080
13081 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13082                                        struct nlattr *attr,
13083                                        struct netlink_ext_ack *extack)
13084 {
13085         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13086                 if (attr->nla_type & NLA_F_NESTED) {
13087                         NL_SET_ERR_MSG_ATTR(extack, attr,
13088                                             "unexpected nested data");
13089                         return -EINVAL;
13090                 }
13091
13092                 return 0;
13093         }
13094
13095         if (!(attr->nla_type & NLA_F_NESTED)) {
13096                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13097                 return -EINVAL;
13098         }
13099
13100         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13101 }
13102
13103 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13104 {
13105         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13106         struct wireless_dev *wdev =
13107                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13108         int i, err;
13109         u32 vid, subcmd;
13110
13111         if (!rdev->wiphy.vendor_commands)
13112                 return -EOPNOTSUPP;
13113
13114         if (IS_ERR(wdev)) {
13115                 err = PTR_ERR(wdev);
13116                 if (err != -EINVAL)
13117                         return err;
13118                 wdev = NULL;
13119         } else if (wdev->wiphy != &rdev->wiphy) {
13120                 return -EINVAL;
13121         }
13122
13123         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13124             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13125                 return -EINVAL;
13126
13127         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13128         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13129         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13130                 const struct wiphy_vendor_command *vcmd;
13131                 void *data = NULL;
13132                 int len = 0;
13133
13134                 vcmd = &rdev->wiphy.vendor_commands[i];
13135
13136                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13137                         continue;
13138
13139                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13140                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13141                         if (!wdev)
13142                                 return -EINVAL;
13143                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13144                             !wdev->netdev)
13145                                 return -EINVAL;
13146
13147                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13148                                 if (!wdev_running(wdev))
13149                                         return -ENETDOWN;
13150                         }
13151
13152                         if (!vcmd->doit)
13153                                 return -EOPNOTSUPP;
13154                 } else {
13155                         wdev = NULL;
13156                 }
13157
13158                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13159                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13160                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13161
13162                         err = nl80211_vendor_check_policy(vcmd,
13163                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13164                                         info->extack);
13165                         if (err)
13166                                 return err;
13167                 }
13168
13169                 rdev->cur_cmd_info = info;
13170                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13171                 rdev->cur_cmd_info = NULL;
13172                 return err;
13173         }
13174
13175         return -EOPNOTSUPP;
13176 }
13177
13178 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13179                                        struct netlink_callback *cb,
13180                                        struct cfg80211_registered_device **rdev,
13181                                        struct wireless_dev **wdev)
13182 {
13183         struct nlattr **attrbuf;
13184         u32 vid, subcmd;
13185         unsigned int i;
13186         int vcmd_idx = -1;
13187         int err;
13188         void *data = NULL;
13189         unsigned int data_len = 0;
13190
13191         if (cb->args[0]) {
13192                 /* subtract the 1 again here */
13193                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13194                 struct wireless_dev *tmp;
13195
13196                 if (!wiphy)
13197                         return -ENODEV;
13198                 *rdev = wiphy_to_rdev(wiphy);
13199                 *wdev = NULL;
13200
13201                 if (cb->args[1]) {
13202                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13203                                 if (tmp->identifier == cb->args[1] - 1) {
13204                                         *wdev = tmp;
13205                                         break;
13206                                 }
13207                         }
13208                 }
13209
13210                 /* keep rtnl locked in successful case */
13211                 return 0;
13212         }
13213
13214         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13215         if (!attrbuf)
13216                 return -ENOMEM;
13217
13218         err = nlmsg_parse_deprecated(cb->nlh,
13219                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13220                                      attrbuf, nl80211_fam.maxattr,
13221                                      nl80211_policy, NULL);
13222         if (err)
13223                 goto out;
13224
13225         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13226             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13227                 err = -EINVAL;
13228                 goto out;
13229         }
13230
13231         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13232         if (IS_ERR(*wdev))
13233                 *wdev = NULL;
13234
13235         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13236         if (IS_ERR(*rdev)) {
13237                 err = PTR_ERR(*rdev);
13238                 goto out;
13239         }
13240
13241         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13242         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13243
13244         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13245                 const struct wiphy_vendor_command *vcmd;
13246
13247                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13248
13249                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13250                         continue;
13251
13252                 if (!vcmd->dumpit) {
13253                         err = -EOPNOTSUPP;
13254                         goto out;
13255                 }
13256
13257                 vcmd_idx = i;
13258                 break;
13259         }
13260
13261         if (vcmd_idx < 0) {
13262                 err = -EOPNOTSUPP;
13263                 goto out;
13264         }
13265
13266         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13267                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13268                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13269
13270                 err = nl80211_vendor_check_policy(
13271                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13272                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13273                                 cb->extack);
13274                 if (err)
13275                         goto out;
13276         }
13277
13278         /* 0 is the first index - add 1 to parse only once */
13279         cb->args[0] = (*rdev)->wiphy_idx + 1;
13280         /* add 1 to know if it was NULL */
13281         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13282         cb->args[2] = vcmd_idx;
13283         cb->args[3] = (unsigned long)data;
13284         cb->args[4] = data_len;
13285
13286         /* keep rtnl locked in successful case */
13287         err = 0;
13288 out:
13289         kfree(attrbuf);
13290         return err;
13291 }
13292
13293 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13294                                    struct netlink_callback *cb)
13295 {
13296         struct cfg80211_registered_device *rdev;
13297         struct wireless_dev *wdev;
13298         unsigned int vcmd_idx;
13299         const struct wiphy_vendor_command *vcmd;
13300         void *data;
13301         int data_len;
13302         int err;
13303         struct nlattr *vendor_data;
13304
13305         rtnl_lock();
13306         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13307         if (err)
13308                 goto out;
13309
13310         vcmd_idx = cb->args[2];
13311         data = (void *)cb->args[3];
13312         data_len = cb->args[4];
13313         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13314
13315         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13316                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13317                 if (!wdev) {
13318                         err = -EINVAL;
13319                         goto out;
13320                 }
13321                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13322                     !wdev->netdev) {
13323                         err = -EINVAL;
13324                         goto out;
13325                 }
13326
13327                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13328                         if (!wdev_running(wdev)) {
13329                                 err = -ENETDOWN;
13330                                 goto out;
13331                         }
13332                 }
13333         }
13334
13335         while (1) {
13336                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13337                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13338                                            NL80211_CMD_VENDOR);
13339                 if (!hdr)
13340                         break;
13341
13342                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13343                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13344                                                wdev_id(wdev),
13345                                                NL80211_ATTR_PAD))) {
13346                         genlmsg_cancel(skb, hdr);
13347                         break;
13348                 }
13349
13350                 vendor_data = nla_nest_start_noflag(skb,
13351                                                     NL80211_ATTR_VENDOR_DATA);
13352                 if (!vendor_data) {
13353                         genlmsg_cancel(skb, hdr);
13354                         break;
13355                 }
13356
13357                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13358                                    (unsigned long *)&cb->args[5]);
13359                 nla_nest_end(skb, vendor_data);
13360
13361                 if (err == -ENOBUFS || err == -ENOENT) {
13362                         genlmsg_cancel(skb, hdr);
13363                         break;
13364                 } else if (err) {
13365                         genlmsg_cancel(skb, hdr);
13366                         goto out;
13367                 }
13368
13369                 genlmsg_end(skb, hdr);
13370         }
13371
13372         err = skb->len;
13373  out:
13374         rtnl_unlock();
13375         return err;
13376 }
13377
13378 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13379                                            enum nl80211_commands cmd,
13380                                            enum nl80211_attrs attr,
13381                                            int approxlen)
13382 {
13383         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13384
13385         if (WARN_ON(!rdev->cur_cmd_info))
13386                 return NULL;
13387
13388         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13389                                            rdev->cur_cmd_info->snd_portid,
13390                                            rdev->cur_cmd_info->snd_seq,
13391                                            cmd, attr, NULL, GFP_KERNEL);
13392 }
13393 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13394
13395 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13396 {
13397         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13398         void *hdr = ((void **)skb->cb)[1];
13399         struct nlattr *data = ((void **)skb->cb)[2];
13400
13401         /* clear CB data for netlink core to own from now on */
13402         memset(skb->cb, 0, sizeof(skb->cb));
13403
13404         if (WARN_ON(!rdev->cur_cmd_info)) {
13405                 kfree_skb(skb);
13406                 return -EINVAL;
13407         }
13408
13409         nla_nest_end(skb, data);
13410         genlmsg_end(skb, hdr);
13411         return genlmsg_reply(skb, rdev->cur_cmd_info);
13412 }
13413 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13414
13415 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13416 {
13417         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13418
13419         if (WARN_ON(!rdev->cur_cmd_info))
13420                 return 0;
13421
13422         return rdev->cur_cmd_info->snd_portid;
13423 }
13424 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13425
13426 static int nl80211_set_qos_map(struct sk_buff *skb,
13427                                struct genl_info *info)
13428 {
13429         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13430         struct cfg80211_qos_map *qos_map = NULL;
13431         struct net_device *dev = info->user_ptr[1];
13432         u8 *pos, len, num_des, des_len, des;
13433         int ret;
13434
13435         if (!rdev->ops->set_qos_map)
13436                 return -EOPNOTSUPP;
13437
13438         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13439                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13440                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13441
13442                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13443                     len > IEEE80211_QOS_MAP_LEN_MAX)
13444                         return -EINVAL;
13445
13446                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13447                 if (!qos_map)
13448                         return -ENOMEM;
13449
13450                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13451                 if (num_des) {
13452                         des_len = num_des *
13453                                 sizeof(struct cfg80211_dscp_exception);
13454                         memcpy(qos_map->dscp_exception, pos, des_len);
13455                         qos_map->num_des = num_des;
13456                         for (des = 0; des < num_des; des++) {
13457                                 if (qos_map->dscp_exception[des].up > 7) {
13458                                         kfree(qos_map);
13459                                         return -EINVAL;
13460                                 }
13461                         }
13462                         pos += des_len;
13463                 }
13464                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13465         }
13466
13467         wdev_lock(dev->ieee80211_ptr);
13468         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13469         if (!ret)
13470                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13471         wdev_unlock(dev->ieee80211_ptr);
13472
13473         kfree(qos_map);
13474         return ret;
13475 }
13476
13477 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13478 {
13479         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13480         struct net_device *dev = info->user_ptr[1];
13481         struct wireless_dev *wdev = dev->ieee80211_ptr;
13482         const u8 *peer;
13483         u8 tsid, up;
13484         u16 admitted_time = 0;
13485         int err;
13486
13487         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13488                 return -EOPNOTSUPP;
13489
13490         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13491             !info->attrs[NL80211_ATTR_USER_PRIO])
13492                 return -EINVAL;
13493
13494         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13495         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13496
13497         /* WMM uses TIDs 0-7 even for TSPEC */
13498         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13499                 /* TODO: handle 802.11 TSPEC/admission control
13500                  * need more attributes for that (e.g. BA session requirement);
13501                  * change the WMM adminssion test above to allow both then
13502                  */
13503                 return -EINVAL;
13504         }
13505
13506         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13507
13508         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13509                 admitted_time =
13510                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13511                 if (!admitted_time)
13512                         return -EINVAL;
13513         }
13514
13515         wdev_lock(wdev);
13516         switch (wdev->iftype) {
13517         case NL80211_IFTYPE_STATION:
13518         case NL80211_IFTYPE_P2P_CLIENT:
13519                 if (wdev->current_bss)
13520                         break;
13521                 err = -ENOTCONN;
13522                 goto out;
13523         default:
13524                 err = -EOPNOTSUPP;
13525                 goto out;
13526         }
13527
13528         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13529
13530  out:
13531         wdev_unlock(wdev);
13532         return err;
13533 }
13534
13535 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13536 {
13537         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13538         struct net_device *dev = info->user_ptr[1];
13539         struct wireless_dev *wdev = dev->ieee80211_ptr;
13540         const u8 *peer;
13541         u8 tsid;
13542         int err;
13543
13544         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13545                 return -EINVAL;
13546
13547         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13548         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13549
13550         wdev_lock(wdev);
13551         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13552         wdev_unlock(wdev);
13553
13554         return err;
13555 }
13556
13557 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13558                                        struct genl_info *info)
13559 {
13560         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13561         struct net_device *dev = info->user_ptr[1];
13562         struct wireless_dev *wdev = dev->ieee80211_ptr;
13563         struct cfg80211_chan_def chandef = {};
13564         const u8 *addr;
13565         u8 oper_class;
13566         int err;
13567
13568         if (!rdev->ops->tdls_channel_switch ||
13569             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13570                 return -EOPNOTSUPP;
13571
13572         switch (dev->ieee80211_ptr->iftype) {
13573         case NL80211_IFTYPE_STATION:
13574         case NL80211_IFTYPE_P2P_CLIENT:
13575                 break;
13576         default:
13577                 return -EOPNOTSUPP;
13578         }
13579
13580         if (!info->attrs[NL80211_ATTR_MAC] ||
13581             !info->attrs[NL80211_ATTR_OPER_CLASS])
13582                 return -EINVAL;
13583
13584         err = nl80211_parse_chandef(rdev, info, &chandef);
13585         if (err)
13586                 return err;
13587
13588         /*
13589          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13590          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13591          * specification is not defined for them.
13592          */
13593         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13594             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13595             chandef.width != NL80211_CHAN_WIDTH_20)
13596                 return -EINVAL;
13597
13598         /* we will be active on the TDLS link */
13599         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13600                                            wdev->iftype))
13601                 return -EINVAL;
13602
13603         /* don't allow switching to DFS channels */
13604         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13605                 return -EINVAL;
13606
13607         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13608         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13609
13610         wdev_lock(wdev);
13611         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13612         wdev_unlock(wdev);
13613
13614         return err;
13615 }
13616
13617 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13618                                               struct genl_info *info)
13619 {
13620         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13621         struct net_device *dev = info->user_ptr[1];
13622         struct wireless_dev *wdev = dev->ieee80211_ptr;
13623         const u8 *addr;
13624
13625         if (!rdev->ops->tdls_channel_switch ||
13626             !rdev->ops->tdls_cancel_channel_switch ||
13627             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13628                 return -EOPNOTSUPP;
13629
13630         switch (dev->ieee80211_ptr->iftype) {
13631         case NL80211_IFTYPE_STATION:
13632         case NL80211_IFTYPE_P2P_CLIENT:
13633                 break;
13634         default:
13635                 return -EOPNOTSUPP;
13636         }
13637
13638         if (!info->attrs[NL80211_ATTR_MAC])
13639                 return -EINVAL;
13640
13641         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13642
13643         wdev_lock(wdev);
13644         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13645         wdev_unlock(wdev);
13646
13647         return 0;
13648 }
13649
13650 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13651                                             struct genl_info *info)
13652 {
13653         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13654         struct net_device *dev = info->user_ptr[1];
13655         struct wireless_dev *wdev = dev->ieee80211_ptr;
13656         const struct nlattr *nla;
13657         bool enabled;
13658
13659         if (!rdev->ops->set_multicast_to_unicast)
13660                 return -EOPNOTSUPP;
13661
13662         if (wdev->iftype != NL80211_IFTYPE_AP &&
13663             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13664                 return -EOPNOTSUPP;
13665
13666         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13667         enabled = nla_get_flag(nla);
13668
13669         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13670 }
13671
13672 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13673 {
13674         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13675         struct net_device *dev = info->user_ptr[1];
13676         struct wireless_dev *wdev = dev->ieee80211_ptr;
13677         struct cfg80211_pmk_conf pmk_conf = {};
13678         int ret;
13679
13680         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13681             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13682                 return -EOPNOTSUPP;
13683
13684         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13685                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13686                 return -EOPNOTSUPP;
13687
13688         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13689                 return -EINVAL;
13690
13691         wdev_lock(wdev);
13692         if (!wdev->current_bss) {
13693                 ret = -ENOTCONN;
13694                 goto out;
13695         }
13696
13697         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13698         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13699                 ret = -EINVAL;
13700                 goto out;
13701         }
13702
13703         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13704         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13705         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13706             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13707                 ret = -EINVAL;
13708                 goto out;
13709         }
13710
13711         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13712                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13713
13714                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13715                         ret = -EINVAL;
13716                         goto out;
13717                 }
13718
13719                 pmk_conf.pmk_r0_name =
13720                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13721         }
13722
13723         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13724 out:
13725         wdev_unlock(wdev);
13726         return ret;
13727 }
13728
13729 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13730 {
13731         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13732         struct net_device *dev = info->user_ptr[1];
13733         struct wireless_dev *wdev = dev->ieee80211_ptr;
13734         const u8 *aa;
13735         int ret;
13736
13737         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13738             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13739                 return -EOPNOTSUPP;
13740
13741         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13742                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13743                 return -EOPNOTSUPP;
13744
13745         if (!info->attrs[NL80211_ATTR_MAC])
13746                 return -EINVAL;
13747
13748         wdev_lock(wdev);
13749         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13750         ret = rdev_del_pmk(rdev, dev, aa);
13751         wdev_unlock(wdev);
13752
13753         return ret;
13754 }
13755
13756 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13757 {
13758         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13759         struct net_device *dev = info->user_ptr[1];
13760         struct cfg80211_external_auth_params params;
13761
13762         if (!rdev->ops->external_auth)
13763                 return -EOPNOTSUPP;
13764
13765         if (!info->attrs[NL80211_ATTR_SSID] &&
13766             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13767             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13768                 return -EINVAL;
13769
13770         if (!info->attrs[NL80211_ATTR_BSSID])
13771                 return -EINVAL;
13772
13773         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13774                 return -EINVAL;
13775
13776         memset(&params, 0, sizeof(params));
13777
13778         if (info->attrs[NL80211_ATTR_SSID]) {
13779                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13780                 if (params.ssid.ssid_len == 0 ||
13781                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13782                         return -EINVAL;
13783                 memcpy(params.ssid.ssid,
13784                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13785                        params.ssid.ssid_len);
13786         }
13787
13788         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13789                ETH_ALEN);
13790
13791         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13792
13793         if (info->attrs[NL80211_ATTR_PMKID])
13794                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13795
13796         return rdev_external_auth(rdev, dev, &params);
13797 }
13798
13799 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13800 {
13801         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13802         struct net_device *dev = info->user_ptr[1];
13803         struct wireless_dev *wdev = dev->ieee80211_ptr;
13804         const u8 *buf;
13805         size_t len;
13806         u8 *dest;
13807         u16 proto;
13808         bool noencrypt;
13809         int err;
13810
13811         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13812                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13813                 return -EOPNOTSUPP;
13814
13815         if (!rdev->ops->tx_control_port)
13816                 return -EOPNOTSUPP;
13817
13818         if (!info->attrs[NL80211_ATTR_FRAME] ||
13819             !info->attrs[NL80211_ATTR_MAC] ||
13820             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13821                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13822                 return -EINVAL;
13823         }
13824
13825         wdev_lock(wdev);
13826
13827         switch (wdev->iftype) {
13828         case NL80211_IFTYPE_AP:
13829         case NL80211_IFTYPE_P2P_GO:
13830         case NL80211_IFTYPE_MESH_POINT:
13831                 break;
13832         case NL80211_IFTYPE_ADHOC:
13833         case NL80211_IFTYPE_STATION:
13834         case NL80211_IFTYPE_P2P_CLIENT:
13835                 if (wdev->current_bss)
13836                         break;
13837                 err = -ENOTCONN;
13838                 goto out;
13839         default:
13840                 err = -EOPNOTSUPP;
13841                 goto out;
13842         }
13843
13844         wdev_unlock(wdev);
13845
13846         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13847         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13848         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13849         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13850         noencrypt =
13851                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13852
13853         return rdev_tx_control_port(rdev, dev, buf, len,
13854                                     dest, cpu_to_be16(proto), noencrypt);
13855
13856  out:
13857         wdev_unlock(wdev);
13858         return err;
13859 }
13860
13861 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13862                                            struct genl_info *info)
13863 {
13864         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13865         struct net_device *dev = info->user_ptr[1];
13866         struct wireless_dev *wdev = dev->ieee80211_ptr;
13867         struct cfg80211_ftm_responder_stats ftm_stats = {};
13868         struct sk_buff *msg;
13869         void *hdr;
13870         struct nlattr *ftm_stats_attr;
13871         int err;
13872
13873         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13874                 return -EOPNOTSUPP;
13875
13876         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13877         if (err)
13878                 return err;
13879
13880         if (!ftm_stats.filled)
13881                 return -ENODATA;
13882
13883         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13884         if (!msg)
13885                 return -ENOMEM;
13886
13887         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13888                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13889         if (!hdr)
13890                 goto nla_put_failure;
13891
13892         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13893                 goto nla_put_failure;
13894
13895         ftm_stats_attr = nla_nest_start_noflag(msg,
13896                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13897         if (!ftm_stats_attr)
13898                 goto nla_put_failure;
13899
13900 #define SET_FTM(field, name, type)                                       \
13901         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13902             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13903                              ftm_stats.field))                           \
13904                 goto nla_put_failure; } while (0)
13905 #define SET_FTM_U64(field, name)                                         \
13906         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13907             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13908                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13909                 goto nla_put_failure; } while (0)
13910
13911         SET_FTM(success_num, SUCCESS_NUM, u32);
13912         SET_FTM(partial_num, PARTIAL_NUM, u32);
13913         SET_FTM(failed_num, FAILED_NUM, u32);
13914         SET_FTM(asap_num, ASAP_NUM, u32);
13915         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13916         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13917         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13918         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13919         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13920 #undef SET_FTM
13921
13922         nla_nest_end(msg, ftm_stats_attr);
13923
13924         genlmsg_end(msg, hdr);
13925         return genlmsg_reply(msg, info);
13926
13927 nla_put_failure:
13928         nlmsg_free(msg);
13929         return -ENOBUFS;
13930 }
13931
13932 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13933 {
13934         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13935         struct cfg80211_update_owe_info owe_info;
13936         struct net_device *dev = info->user_ptr[1];
13937
13938         if (!rdev->ops->update_owe_info)
13939                 return -EOPNOTSUPP;
13940
13941         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13942             !info->attrs[NL80211_ATTR_MAC])
13943                 return -EINVAL;
13944
13945         memset(&owe_info, 0, sizeof(owe_info));
13946         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13947         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13948
13949         if (info->attrs[NL80211_ATTR_IE]) {
13950                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13951                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13952         }
13953
13954         return rdev_update_owe_info(rdev, dev, &owe_info);
13955 }
13956
13957 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13958 {
13959         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13960         struct net_device *dev = info->user_ptr[1];
13961         struct wireless_dev *wdev = dev->ieee80211_ptr;
13962         struct station_info sinfo = {};
13963         const u8 *buf;
13964         size_t len;
13965         u8 *dest;
13966         int err;
13967
13968         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13969                 return -EOPNOTSUPP;
13970
13971         if (!info->attrs[NL80211_ATTR_MAC] ||
13972             !info->attrs[NL80211_ATTR_FRAME]) {
13973                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13974                 return -EINVAL;
13975         }
13976
13977         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13978                 return -EOPNOTSUPP;
13979
13980         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13981         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13982         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13983
13984         if (len < sizeof(struct ethhdr))
13985                 return -EINVAL;
13986
13987         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13988             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13989                 return -EINVAL;
13990
13991         err = rdev_get_station(rdev, dev, dest, &sinfo);
13992         if (err)
13993                 return err;
13994
13995         cfg80211_sinfo_release_content(&sinfo);
13996
13997         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13998 }
13999
14000 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14001                           struct nlattr *attrs[], struct net_device *dev,
14002                           struct cfg80211_tid_cfg *tid_conf,
14003                           struct genl_info *info, const u8 *peer)
14004 {
14005         struct netlink_ext_ack *extack = info->extack;
14006         u64 mask;
14007         int err;
14008
14009         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14010                 return -EINVAL;
14011
14012         tid_conf->config_override =
14013                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14014         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14015
14016         if (tid_conf->config_override) {
14017                 if (rdev->ops->reset_tid_config) {
14018                         err = rdev_reset_tid_config(rdev, dev, peer,
14019                                                     tid_conf->tids);
14020                         /* If peer is there no other configuration will be
14021                          * allowed
14022                          */
14023                         if (err || peer)
14024                                 return err;
14025                 } else {
14026                         return -EINVAL;
14027                 }
14028         }
14029
14030         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14031                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14032                 tid_conf->noack =
14033                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14034         }
14035
14036         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14037                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14038                 tid_conf->retry_short =
14039                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14040
14041                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14042                         return -EINVAL;
14043         }
14044
14045         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14046                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14047                 tid_conf->retry_long =
14048                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14049
14050                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14051                         return -EINVAL;
14052         }
14053
14054         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14055                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14056                 tid_conf->ampdu =
14057                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14058         }
14059
14060         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14061                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14062                 tid_conf->rtscts =
14063                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14064         }
14065
14066         if (peer)
14067                 mask = rdev->wiphy.tid_config_support.peer;
14068         else
14069                 mask = rdev->wiphy.tid_config_support.vif;
14070
14071         if (tid_conf->mask & ~mask) {
14072                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14073                 return -ENOTSUPP;
14074         }
14075
14076         return 0;
14077 }
14078
14079 static int nl80211_set_tid_config(struct sk_buff *skb,
14080                                   struct genl_info *info)
14081 {
14082         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14083         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14084         struct net_device *dev = info->user_ptr[1];
14085         struct cfg80211_tid_config *tid_config;
14086         struct nlattr *tid;
14087         int conf_idx = 0, rem_conf;
14088         int ret = -EINVAL;
14089         u32 num_conf = 0;
14090
14091         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14092                 return -EINVAL;
14093
14094         if (!rdev->ops->set_tid_config)
14095                 return -EOPNOTSUPP;
14096
14097         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14098                             rem_conf)
14099                 num_conf++;
14100
14101         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14102                              GFP_KERNEL);
14103         if (!tid_config)
14104                 return -ENOMEM;
14105
14106         tid_config->n_tid_conf = num_conf;
14107
14108         if (info->attrs[NL80211_ATTR_MAC])
14109                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14110
14111         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14112                             rem_conf) {
14113                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14114                                        tid, NULL, NULL);
14115
14116                 if (ret)
14117                         goto bad_tid_conf;
14118
14119                 ret = parse_tid_conf(rdev, attrs, dev,
14120                                      &tid_config->tid_conf[conf_idx],
14121                                      info, tid_config->peer);
14122                 if (ret)
14123                         goto bad_tid_conf;
14124
14125                 conf_idx++;
14126         }
14127
14128         ret = rdev_set_tid_config(rdev, dev, tid_config);
14129
14130 bad_tid_conf:
14131         kfree(tid_config);
14132         return ret;
14133 }
14134
14135 #define NL80211_FLAG_NEED_WIPHY         0x01
14136 #define NL80211_FLAG_NEED_NETDEV        0x02
14137 #define NL80211_FLAG_NEED_RTNL          0x04
14138 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14139 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14140                                          NL80211_FLAG_CHECK_NETDEV_UP)
14141 #define NL80211_FLAG_NEED_WDEV          0x10
14142 /* If a netdev is associated, it must be UP, P2P must be started */
14143 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14144                                          NL80211_FLAG_CHECK_NETDEV_UP)
14145 #define NL80211_FLAG_CLEAR_SKB          0x20
14146
14147 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14148                             struct genl_info *info)
14149 {
14150         struct cfg80211_registered_device *rdev;
14151         struct wireless_dev *wdev;
14152         struct net_device *dev;
14153         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14154
14155         if (rtnl)
14156                 rtnl_lock();
14157
14158         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14159                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14160                 if (IS_ERR(rdev)) {
14161                         if (rtnl)
14162                                 rtnl_unlock();
14163                         return PTR_ERR(rdev);
14164                 }
14165                 info->user_ptr[0] = rdev;
14166         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14167                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14168                 ASSERT_RTNL();
14169
14170                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14171                                                   info->attrs);
14172                 if (IS_ERR(wdev)) {
14173                         if (rtnl)
14174                                 rtnl_unlock();
14175                         return PTR_ERR(wdev);
14176                 }
14177
14178                 dev = wdev->netdev;
14179                 rdev = wiphy_to_rdev(wdev->wiphy);
14180
14181                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14182                         if (!dev) {
14183                                 if (rtnl)
14184                                         rtnl_unlock();
14185                                 return -EINVAL;
14186                         }
14187
14188                         info->user_ptr[1] = dev;
14189                 } else {
14190                         info->user_ptr[1] = wdev;
14191                 }
14192
14193                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14194                     !wdev_running(wdev)) {
14195                         if (rtnl)
14196                                 rtnl_unlock();
14197                         return -ENETDOWN;
14198                 }
14199
14200                 if (dev)
14201                         dev_hold(dev);
14202
14203                 info->user_ptr[0] = rdev;
14204         }
14205
14206         return 0;
14207 }
14208
14209 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14210                               struct genl_info *info)
14211 {
14212         if (info->user_ptr[1]) {
14213                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14214                         struct wireless_dev *wdev = info->user_ptr[1];
14215
14216                         if (wdev->netdev)
14217                                 dev_put(wdev->netdev);
14218                 } else {
14219                         dev_put(info->user_ptr[1]);
14220                 }
14221         }
14222
14223         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14224                 rtnl_unlock();
14225
14226         /* If needed, clear the netlink message payload from the SKB
14227          * as it might contain key data that shouldn't stick around on
14228          * the heap after the SKB is freed. The netlink message header
14229          * is still needed for further processing, so leave it intact.
14230          */
14231         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14232                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14233
14234                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14235         }
14236 }
14237
14238 static const struct genl_ops nl80211_ops[] = {
14239         {
14240                 .cmd = NL80211_CMD_GET_WIPHY,
14241                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14242                 .doit = nl80211_get_wiphy,
14243                 .dumpit = nl80211_dump_wiphy,
14244                 .done = nl80211_dump_wiphy_done,
14245                 /* can be retrieved by unprivileged users */
14246                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14247                                   NL80211_FLAG_NEED_RTNL,
14248         },
14249         {
14250                 .cmd = NL80211_CMD_SET_WIPHY,
14251                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14252                 .doit = nl80211_set_wiphy,
14253                 .flags = GENL_UNS_ADMIN_PERM,
14254                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14255         },
14256         {
14257                 .cmd = NL80211_CMD_GET_INTERFACE,
14258                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14259                 .doit = nl80211_get_interface,
14260                 .dumpit = nl80211_dump_interface,
14261                 /* can be retrieved by unprivileged users */
14262                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14263                                   NL80211_FLAG_NEED_RTNL,
14264         },
14265         {
14266                 .cmd = NL80211_CMD_SET_INTERFACE,
14267                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14268                 .doit = nl80211_set_interface,
14269                 .flags = GENL_UNS_ADMIN_PERM,
14270                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14271                                   NL80211_FLAG_NEED_RTNL,
14272         },
14273         {
14274                 .cmd = NL80211_CMD_NEW_INTERFACE,
14275                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14276                 .doit = nl80211_new_interface,
14277                 .flags = GENL_UNS_ADMIN_PERM,
14278                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14279                                   NL80211_FLAG_NEED_RTNL,
14280         },
14281         {
14282                 .cmd = NL80211_CMD_DEL_INTERFACE,
14283                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14284                 .doit = nl80211_del_interface,
14285                 .flags = GENL_UNS_ADMIN_PERM,
14286                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14287                                   NL80211_FLAG_NEED_RTNL,
14288         },
14289         {
14290                 .cmd = NL80211_CMD_GET_KEY,
14291                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14292                 .doit = nl80211_get_key,
14293                 .flags = GENL_UNS_ADMIN_PERM,
14294                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14295                                   NL80211_FLAG_NEED_RTNL,
14296         },
14297         {
14298                 .cmd = NL80211_CMD_SET_KEY,
14299                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14300                 .doit = nl80211_set_key,
14301                 .flags = GENL_UNS_ADMIN_PERM,
14302                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14303                                   NL80211_FLAG_NEED_RTNL |
14304                                   NL80211_FLAG_CLEAR_SKB,
14305         },
14306         {
14307                 .cmd = NL80211_CMD_NEW_KEY,
14308                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14309                 .doit = nl80211_new_key,
14310                 .flags = GENL_UNS_ADMIN_PERM,
14311                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14312                                   NL80211_FLAG_NEED_RTNL |
14313                                   NL80211_FLAG_CLEAR_SKB,
14314         },
14315         {
14316                 .cmd = NL80211_CMD_DEL_KEY,
14317                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14318                 .doit = nl80211_del_key,
14319                 .flags = GENL_UNS_ADMIN_PERM,
14320                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14321                                   NL80211_FLAG_NEED_RTNL,
14322         },
14323         {
14324                 .cmd = NL80211_CMD_SET_BEACON,
14325                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14326                 .flags = GENL_UNS_ADMIN_PERM,
14327                 .doit = nl80211_set_beacon,
14328                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14329                                   NL80211_FLAG_NEED_RTNL,
14330         },
14331         {
14332                 .cmd = NL80211_CMD_START_AP,
14333                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14334                 .flags = GENL_UNS_ADMIN_PERM,
14335                 .doit = nl80211_start_ap,
14336                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14337                                   NL80211_FLAG_NEED_RTNL,
14338         },
14339         {
14340                 .cmd = NL80211_CMD_STOP_AP,
14341                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14342                 .flags = GENL_UNS_ADMIN_PERM,
14343                 .doit = nl80211_stop_ap,
14344                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14345                                   NL80211_FLAG_NEED_RTNL,
14346         },
14347         {
14348                 .cmd = NL80211_CMD_GET_STATION,
14349                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14350                 .doit = nl80211_get_station,
14351                 .dumpit = nl80211_dump_station,
14352                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14353                                   NL80211_FLAG_NEED_RTNL,
14354         },
14355         {
14356                 .cmd = NL80211_CMD_SET_STATION,
14357                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14358                 .doit = nl80211_set_station,
14359                 .flags = GENL_UNS_ADMIN_PERM,
14360                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14361                                   NL80211_FLAG_NEED_RTNL,
14362         },
14363         {
14364                 .cmd = NL80211_CMD_NEW_STATION,
14365                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14366                 .doit = nl80211_new_station,
14367                 .flags = GENL_UNS_ADMIN_PERM,
14368                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14369                                   NL80211_FLAG_NEED_RTNL,
14370         },
14371         {
14372                 .cmd = NL80211_CMD_DEL_STATION,
14373                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14374                 .doit = nl80211_del_station,
14375                 .flags = GENL_UNS_ADMIN_PERM,
14376                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14377                                   NL80211_FLAG_NEED_RTNL,
14378         },
14379         {
14380                 .cmd = NL80211_CMD_GET_MPATH,
14381                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14382                 .doit = nl80211_get_mpath,
14383                 .dumpit = nl80211_dump_mpath,
14384                 .flags = GENL_UNS_ADMIN_PERM,
14385                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14386                                   NL80211_FLAG_NEED_RTNL,
14387         },
14388         {
14389                 .cmd = NL80211_CMD_GET_MPP,
14390                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14391                 .doit = nl80211_get_mpp,
14392                 .dumpit = nl80211_dump_mpp,
14393                 .flags = GENL_UNS_ADMIN_PERM,
14394                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14395                                   NL80211_FLAG_NEED_RTNL,
14396         },
14397         {
14398                 .cmd = NL80211_CMD_SET_MPATH,
14399                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14400                 .doit = nl80211_set_mpath,
14401                 .flags = GENL_UNS_ADMIN_PERM,
14402                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14403                                   NL80211_FLAG_NEED_RTNL,
14404         },
14405         {
14406                 .cmd = NL80211_CMD_NEW_MPATH,
14407                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14408                 .doit = nl80211_new_mpath,
14409                 .flags = GENL_UNS_ADMIN_PERM,
14410                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14411                                   NL80211_FLAG_NEED_RTNL,
14412         },
14413         {
14414                 .cmd = NL80211_CMD_DEL_MPATH,
14415                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14416                 .doit = nl80211_del_mpath,
14417                 .flags = GENL_UNS_ADMIN_PERM,
14418                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14419                                   NL80211_FLAG_NEED_RTNL,
14420         },
14421         {
14422                 .cmd = NL80211_CMD_SET_BSS,
14423                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14424                 .doit = nl80211_set_bss,
14425                 .flags = GENL_UNS_ADMIN_PERM,
14426                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14427                                   NL80211_FLAG_NEED_RTNL,
14428         },
14429         {
14430                 .cmd = NL80211_CMD_GET_REG,
14431                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14432                 .doit = nl80211_get_reg_do,
14433                 .dumpit = nl80211_get_reg_dump,
14434                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14435                 /* can be retrieved by unprivileged users */
14436         },
14437 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14438         {
14439                 .cmd = NL80211_CMD_SET_REG,
14440                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14441                 .doit = nl80211_set_reg,
14442                 .flags = GENL_ADMIN_PERM,
14443                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14444         },
14445 #endif
14446         {
14447                 .cmd = NL80211_CMD_REQ_SET_REG,
14448                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14449                 .doit = nl80211_req_set_reg,
14450                 .flags = GENL_ADMIN_PERM,
14451         },
14452         {
14453                 .cmd = NL80211_CMD_RELOAD_REGDB,
14454                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14455                 .doit = nl80211_reload_regdb,
14456                 .flags = GENL_ADMIN_PERM,
14457         },
14458         {
14459                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14460                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14461                 .doit = nl80211_get_mesh_config,
14462                 /* can be retrieved by unprivileged users */
14463                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14464                                   NL80211_FLAG_NEED_RTNL,
14465         },
14466         {
14467                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14468                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14469                 .doit = nl80211_update_mesh_config,
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_TRIGGER_SCAN,
14476                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14477                 .doit = nl80211_trigger_scan,
14478                 .flags = GENL_UNS_ADMIN_PERM,
14479                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14480                                   NL80211_FLAG_NEED_RTNL,
14481         },
14482         {
14483                 .cmd = NL80211_CMD_ABORT_SCAN,
14484                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14485                 .doit = nl80211_abort_scan,
14486                 .flags = GENL_UNS_ADMIN_PERM,
14487                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14488                                   NL80211_FLAG_NEED_RTNL,
14489         },
14490         {
14491                 .cmd = NL80211_CMD_GET_SCAN,
14492                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14493                 .dumpit = nl80211_dump_scan,
14494         },
14495         {
14496                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14497                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14498                 .doit = nl80211_start_sched_scan,
14499                 .flags = GENL_UNS_ADMIN_PERM,
14500                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14501                                   NL80211_FLAG_NEED_RTNL,
14502         },
14503         {
14504                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14505                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14506                 .doit = nl80211_stop_sched_scan,
14507                 .flags = GENL_UNS_ADMIN_PERM,
14508                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14509                                   NL80211_FLAG_NEED_RTNL,
14510         },
14511         {
14512                 .cmd = NL80211_CMD_AUTHENTICATE,
14513                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14514                 .doit = nl80211_authenticate,
14515                 .flags = GENL_UNS_ADMIN_PERM,
14516                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14517                                   NL80211_FLAG_NEED_RTNL |
14518                                   NL80211_FLAG_CLEAR_SKB,
14519         },
14520         {
14521                 .cmd = NL80211_CMD_ASSOCIATE,
14522                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14523                 .doit = nl80211_associate,
14524                 .flags = GENL_UNS_ADMIN_PERM,
14525                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14526                                   NL80211_FLAG_NEED_RTNL |
14527                                   NL80211_FLAG_CLEAR_SKB,
14528         },
14529         {
14530                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14531                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14532                 .doit = nl80211_deauthenticate,
14533                 .flags = GENL_UNS_ADMIN_PERM,
14534                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14535                                   NL80211_FLAG_NEED_RTNL,
14536         },
14537         {
14538                 .cmd = NL80211_CMD_DISASSOCIATE,
14539                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14540                 .doit = nl80211_disassociate,
14541                 .flags = GENL_UNS_ADMIN_PERM,
14542                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14543                                   NL80211_FLAG_NEED_RTNL,
14544         },
14545         {
14546                 .cmd = NL80211_CMD_JOIN_IBSS,
14547                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14548                 .doit = nl80211_join_ibss,
14549                 .flags = GENL_UNS_ADMIN_PERM,
14550                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14551                                   NL80211_FLAG_NEED_RTNL,
14552         },
14553         {
14554                 .cmd = NL80211_CMD_LEAVE_IBSS,
14555                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14556                 .doit = nl80211_leave_ibss,
14557                 .flags = GENL_UNS_ADMIN_PERM,
14558                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14559                                   NL80211_FLAG_NEED_RTNL,
14560         },
14561 #ifdef CONFIG_NL80211_TESTMODE
14562         {
14563                 .cmd = NL80211_CMD_TESTMODE,
14564                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14565                 .doit = nl80211_testmode_do,
14566                 .dumpit = nl80211_testmode_dump,
14567                 .flags = GENL_UNS_ADMIN_PERM,
14568                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14569                                   NL80211_FLAG_NEED_RTNL,
14570         },
14571 #endif
14572         {
14573                 .cmd = NL80211_CMD_CONNECT,
14574                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14575                 .doit = nl80211_connect,
14576                 .flags = GENL_UNS_ADMIN_PERM,
14577                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14578                                   NL80211_FLAG_NEED_RTNL |
14579                                   NL80211_FLAG_CLEAR_SKB,
14580         },
14581         {
14582                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14583                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14584                 .doit = nl80211_update_connect_params,
14585                 .flags = GENL_ADMIN_PERM,
14586                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14587                                   NL80211_FLAG_NEED_RTNL |
14588                                   NL80211_FLAG_CLEAR_SKB,
14589         },
14590         {
14591                 .cmd = NL80211_CMD_DISCONNECT,
14592                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14593                 .doit = nl80211_disconnect,
14594                 .flags = GENL_UNS_ADMIN_PERM,
14595                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14596                                   NL80211_FLAG_NEED_RTNL,
14597         },
14598         {
14599                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14600                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14601                 .doit = nl80211_wiphy_netns,
14602                 .flags = GENL_UNS_ADMIN_PERM,
14603                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14604                                   NL80211_FLAG_NEED_RTNL,
14605         },
14606         {
14607                 .cmd = NL80211_CMD_GET_SURVEY,
14608                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14609                 .dumpit = nl80211_dump_survey,
14610         },
14611         {
14612                 .cmd = NL80211_CMD_SET_PMKSA,
14613                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14614                 .doit = nl80211_setdel_pmksa,
14615                 .flags = GENL_UNS_ADMIN_PERM,
14616                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14617                                   NL80211_FLAG_NEED_RTNL |
14618                                   NL80211_FLAG_CLEAR_SKB,
14619         },
14620         {
14621                 .cmd = NL80211_CMD_DEL_PMKSA,
14622                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14623                 .doit = nl80211_setdel_pmksa,
14624                 .flags = GENL_UNS_ADMIN_PERM,
14625                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14626                                   NL80211_FLAG_NEED_RTNL,
14627         },
14628         {
14629                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14630                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14631                 .doit = nl80211_flush_pmksa,
14632                 .flags = GENL_UNS_ADMIN_PERM,
14633                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14634                                   NL80211_FLAG_NEED_RTNL,
14635         },
14636         {
14637                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14638                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14639                 .doit = nl80211_remain_on_channel,
14640                 .flags = GENL_UNS_ADMIN_PERM,
14641                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14642                                   NL80211_FLAG_NEED_RTNL,
14643         },
14644         {
14645                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14646                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14647                 .doit = nl80211_cancel_remain_on_channel,
14648                 .flags = GENL_UNS_ADMIN_PERM,
14649                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14650                                   NL80211_FLAG_NEED_RTNL,
14651         },
14652         {
14653                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14654                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14655                 .doit = nl80211_set_tx_bitrate_mask,
14656                 .flags = GENL_UNS_ADMIN_PERM,
14657                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14658                                   NL80211_FLAG_NEED_RTNL,
14659         },
14660         {
14661                 .cmd = NL80211_CMD_REGISTER_FRAME,
14662                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14663                 .doit = nl80211_register_mgmt,
14664                 .flags = GENL_UNS_ADMIN_PERM,
14665                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14666                                   NL80211_FLAG_NEED_RTNL,
14667         },
14668         {
14669                 .cmd = NL80211_CMD_FRAME,
14670                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14671                 .doit = nl80211_tx_mgmt,
14672                 .flags = GENL_UNS_ADMIN_PERM,
14673                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14674                                   NL80211_FLAG_NEED_RTNL,
14675         },
14676         {
14677                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14678                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14679                 .doit = nl80211_tx_mgmt_cancel_wait,
14680                 .flags = GENL_UNS_ADMIN_PERM,
14681                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14682                                   NL80211_FLAG_NEED_RTNL,
14683         },
14684         {
14685                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14686                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14687                 .doit = nl80211_set_power_save,
14688                 .flags = GENL_UNS_ADMIN_PERM,
14689                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14690                                   NL80211_FLAG_NEED_RTNL,
14691         },
14692         {
14693                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14694                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14695                 .doit = nl80211_get_power_save,
14696                 /* can be retrieved by unprivileged users */
14697                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14698                                   NL80211_FLAG_NEED_RTNL,
14699         },
14700         {
14701                 .cmd = NL80211_CMD_SET_CQM,
14702                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14703                 .doit = nl80211_set_cqm,
14704                 .flags = GENL_UNS_ADMIN_PERM,
14705                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14706                                   NL80211_FLAG_NEED_RTNL,
14707         },
14708         {
14709                 .cmd = NL80211_CMD_SET_CHANNEL,
14710                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14711                 .doit = nl80211_set_channel,
14712                 .flags = GENL_UNS_ADMIN_PERM,
14713                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14714                                   NL80211_FLAG_NEED_RTNL,
14715         },
14716         {
14717                 .cmd = NL80211_CMD_SET_WDS_PEER,
14718                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14719                 .doit = nl80211_set_wds_peer,
14720                 .flags = GENL_UNS_ADMIN_PERM,
14721                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14722                                   NL80211_FLAG_NEED_RTNL,
14723         },
14724         {
14725                 .cmd = NL80211_CMD_JOIN_MESH,
14726                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14727                 .doit = nl80211_join_mesh,
14728                 .flags = GENL_UNS_ADMIN_PERM,
14729                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14730                                   NL80211_FLAG_NEED_RTNL,
14731         },
14732         {
14733                 .cmd = NL80211_CMD_LEAVE_MESH,
14734                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14735                 .doit = nl80211_leave_mesh,
14736                 .flags = GENL_UNS_ADMIN_PERM,
14737                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14738                                   NL80211_FLAG_NEED_RTNL,
14739         },
14740         {
14741                 .cmd = NL80211_CMD_JOIN_OCB,
14742                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14743                 .doit = nl80211_join_ocb,
14744                 .flags = GENL_UNS_ADMIN_PERM,
14745                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14746                                   NL80211_FLAG_NEED_RTNL,
14747         },
14748         {
14749                 .cmd = NL80211_CMD_LEAVE_OCB,
14750                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14751                 .doit = nl80211_leave_ocb,
14752                 .flags = GENL_UNS_ADMIN_PERM,
14753                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14754                                   NL80211_FLAG_NEED_RTNL,
14755         },
14756 #ifdef CONFIG_PM
14757         {
14758                 .cmd = NL80211_CMD_GET_WOWLAN,
14759                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14760                 .doit = nl80211_get_wowlan,
14761                 /* can be retrieved by unprivileged users */
14762                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14763                                   NL80211_FLAG_NEED_RTNL,
14764         },
14765         {
14766                 .cmd = NL80211_CMD_SET_WOWLAN,
14767                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14768                 .doit = nl80211_set_wowlan,
14769                 .flags = GENL_UNS_ADMIN_PERM,
14770                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14771                                   NL80211_FLAG_NEED_RTNL,
14772         },
14773 #endif
14774         {
14775                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14776                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14777                 .doit = nl80211_set_rekey_data,
14778                 .flags = GENL_UNS_ADMIN_PERM,
14779                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14780                                   NL80211_FLAG_NEED_RTNL |
14781                                   NL80211_FLAG_CLEAR_SKB,
14782         },
14783         {
14784                 .cmd = NL80211_CMD_TDLS_MGMT,
14785                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14786                 .doit = nl80211_tdls_mgmt,
14787                 .flags = GENL_UNS_ADMIN_PERM,
14788                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14789                                   NL80211_FLAG_NEED_RTNL,
14790         },
14791         {
14792                 .cmd = NL80211_CMD_TDLS_OPER,
14793                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14794                 .doit = nl80211_tdls_oper,
14795                 .flags = GENL_UNS_ADMIN_PERM,
14796                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14797                                   NL80211_FLAG_NEED_RTNL,
14798         },
14799         {
14800                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14801                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14802                 .doit = nl80211_register_unexpected_frame,
14803                 .flags = GENL_UNS_ADMIN_PERM,
14804                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14805                                   NL80211_FLAG_NEED_RTNL,
14806         },
14807         {
14808                 .cmd = NL80211_CMD_PROBE_CLIENT,
14809                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14810                 .doit = nl80211_probe_client,
14811                 .flags = GENL_UNS_ADMIN_PERM,
14812                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14813                                   NL80211_FLAG_NEED_RTNL,
14814         },
14815         {
14816                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14817                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14818                 .doit = nl80211_register_beacons,
14819                 .flags = GENL_UNS_ADMIN_PERM,
14820                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14821                                   NL80211_FLAG_NEED_RTNL,
14822         },
14823         {
14824                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14825                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14826                 .doit = nl80211_set_noack_map,
14827                 .flags = GENL_UNS_ADMIN_PERM,
14828                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14829                                   NL80211_FLAG_NEED_RTNL,
14830         },
14831         {
14832                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14833                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14834                 .doit = nl80211_start_p2p_device,
14835                 .flags = GENL_UNS_ADMIN_PERM,
14836                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14837                                   NL80211_FLAG_NEED_RTNL,
14838         },
14839         {
14840                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14841                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14842                 .doit = nl80211_stop_p2p_device,
14843                 .flags = GENL_UNS_ADMIN_PERM,
14844                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14845                                   NL80211_FLAG_NEED_RTNL,
14846         },
14847         {
14848                 .cmd = NL80211_CMD_START_NAN,
14849                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14850                 .doit = nl80211_start_nan,
14851                 .flags = GENL_ADMIN_PERM,
14852                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14853                                   NL80211_FLAG_NEED_RTNL,
14854         },
14855         {
14856                 .cmd = NL80211_CMD_STOP_NAN,
14857                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14858                 .doit = nl80211_stop_nan,
14859                 .flags = GENL_ADMIN_PERM,
14860                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14861                                   NL80211_FLAG_NEED_RTNL,
14862         },
14863         {
14864                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14865                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14866                 .doit = nl80211_nan_add_func,
14867                 .flags = GENL_ADMIN_PERM,
14868                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14869                                   NL80211_FLAG_NEED_RTNL,
14870         },
14871         {
14872                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14873                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14874                 .doit = nl80211_nan_del_func,
14875                 .flags = GENL_ADMIN_PERM,
14876                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14877                                   NL80211_FLAG_NEED_RTNL,
14878         },
14879         {
14880                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14881                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14882                 .doit = nl80211_nan_change_config,
14883                 .flags = GENL_ADMIN_PERM,
14884                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14885                                   NL80211_FLAG_NEED_RTNL,
14886         },
14887         {
14888                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14889                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14890                 .doit = nl80211_set_mcast_rate,
14891                 .flags = GENL_UNS_ADMIN_PERM,
14892                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14893                                   NL80211_FLAG_NEED_RTNL,
14894         },
14895         {
14896                 .cmd = NL80211_CMD_SET_MAC_ACL,
14897                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14898                 .doit = nl80211_set_mac_acl,
14899                 .flags = GENL_UNS_ADMIN_PERM,
14900                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14901                                   NL80211_FLAG_NEED_RTNL,
14902         },
14903         {
14904                 .cmd = NL80211_CMD_RADAR_DETECT,
14905                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14906                 .doit = nl80211_start_radar_detection,
14907                 .flags = GENL_UNS_ADMIN_PERM,
14908                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14909                                   NL80211_FLAG_NEED_RTNL,
14910         },
14911         {
14912                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14913                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14914                 .doit = nl80211_get_protocol_features,
14915         },
14916         {
14917                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14918                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14919                 .doit = nl80211_update_ft_ies,
14920                 .flags = GENL_UNS_ADMIN_PERM,
14921                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14922                                   NL80211_FLAG_NEED_RTNL,
14923         },
14924         {
14925                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14926                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14927                 .doit = nl80211_crit_protocol_start,
14928                 .flags = GENL_UNS_ADMIN_PERM,
14929                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14930                                   NL80211_FLAG_NEED_RTNL,
14931         },
14932         {
14933                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14934                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14935                 .doit = nl80211_crit_protocol_stop,
14936                 .flags = GENL_UNS_ADMIN_PERM,
14937                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14938                                   NL80211_FLAG_NEED_RTNL,
14939         },
14940         {
14941                 .cmd = NL80211_CMD_GET_COALESCE,
14942                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14943                 .doit = nl80211_get_coalesce,
14944                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14945                                   NL80211_FLAG_NEED_RTNL,
14946         },
14947         {
14948                 .cmd = NL80211_CMD_SET_COALESCE,
14949                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14950                 .doit = nl80211_set_coalesce,
14951                 .flags = GENL_UNS_ADMIN_PERM,
14952                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14953                                   NL80211_FLAG_NEED_RTNL,
14954         },
14955         {
14956                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14957                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14958                 .doit = nl80211_channel_switch,
14959                 .flags = GENL_UNS_ADMIN_PERM,
14960                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14961                                   NL80211_FLAG_NEED_RTNL,
14962         },
14963         {
14964                 .cmd = NL80211_CMD_VENDOR,
14965                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14966                 .doit = nl80211_vendor_cmd,
14967                 .dumpit = nl80211_vendor_cmd_dump,
14968                 .flags = GENL_UNS_ADMIN_PERM,
14969                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14970                                   NL80211_FLAG_NEED_RTNL |
14971                                   NL80211_FLAG_CLEAR_SKB,
14972         },
14973         {
14974                 .cmd = NL80211_CMD_SET_QOS_MAP,
14975                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14976                 .doit = nl80211_set_qos_map,
14977                 .flags = GENL_UNS_ADMIN_PERM,
14978                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14979                                   NL80211_FLAG_NEED_RTNL,
14980         },
14981         {
14982                 .cmd = NL80211_CMD_ADD_TX_TS,
14983                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14984                 .doit = nl80211_add_tx_ts,
14985                 .flags = GENL_UNS_ADMIN_PERM,
14986                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14987                                   NL80211_FLAG_NEED_RTNL,
14988         },
14989         {
14990                 .cmd = NL80211_CMD_DEL_TX_TS,
14991                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14992                 .doit = nl80211_del_tx_ts,
14993                 .flags = GENL_UNS_ADMIN_PERM,
14994                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14995                                   NL80211_FLAG_NEED_RTNL,
14996         },
14997         {
14998                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14999                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15000                 .doit = nl80211_tdls_channel_switch,
15001                 .flags = GENL_UNS_ADMIN_PERM,
15002                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15003                                   NL80211_FLAG_NEED_RTNL,
15004         },
15005         {
15006                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15007                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15008                 .doit = nl80211_tdls_cancel_channel_switch,
15009                 .flags = GENL_UNS_ADMIN_PERM,
15010                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15011                                   NL80211_FLAG_NEED_RTNL,
15012         },
15013         {
15014                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15015                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15016                 .doit = nl80211_set_multicast_to_unicast,
15017                 .flags = GENL_UNS_ADMIN_PERM,
15018                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15019                                   NL80211_FLAG_NEED_RTNL,
15020         },
15021         {
15022                 .cmd = NL80211_CMD_SET_PMK,
15023                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15024                 .doit = nl80211_set_pmk,
15025                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15026                                   NL80211_FLAG_NEED_RTNL |
15027                                   NL80211_FLAG_CLEAR_SKB,
15028         },
15029         {
15030                 .cmd = NL80211_CMD_DEL_PMK,
15031                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15032                 .doit = nl80211_del_pmk,
15033                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15034                                   NL80211_FLAG_NEED_RTNL,
15035         },
15036         {
15037                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15038                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15039                 .doit = nl80211_external_auth,
15040                 .flags = GENL_ADMIN_PERM,
15041                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15042                                   NL80211_FLAG_NEED_RTNL,
15043         },
15044         {
15045                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15046                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15047                 .doit = nl80211_tx_control_port,
15048                 .flags = GENL_UNS_ADMIN_PERM,
15049                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15050                                   NL80211_FLAG_NEED_RTNL,
15051         },
15052         {
15053                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15054                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15055                 .doit = nl80211_get_ftm_responder_stats,
15056                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15057                                   NL80211_FLAG_NEED_RTNL,
15058         },
15059         {
15060                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15061                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15062                 .doit = nl80211_pmsr_start,
15063                 .flags = GENL_UNS_ADMIN_PERM,
15064                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15065                                   NL80211_FLAG_NEED_RTNL,
15066         },
15067         {
15068                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15069                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15070                 .doit = nl80211_notify_radar_detection,
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_UPDATE_OWE_INFO,
15077                 .doit = nl80211_update_owe_info,
15078                 .flags = GENL_ADMIN_PERM,
15079                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15080                                   NL80211_FLAG_NEED_RTNL,
15081         },
15082         {
15083                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15084                 .doit = nl80211_probe_mesh_link,
15085                 .flags = GENL_UNS_ADMIN_PERM,
15086                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15087                                   NL80211_FLAG_NEED_RTNL,
15088         },
15089         {
15090                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15091                 .doit = nl80211_set_tid_config,
15092                 .flags = GENL_UNS_ADMIN_PERM,
15093                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15094                                   NL80211_FLAG_NEED_RTNL,
15095         },
15096 };
15097
15098 static struct genl_family nl80211_fam __ro_after_init = {
15099         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15100         .hdrsize = 0,                   /* no private header */
15101         .version = 1,                   /* no particular meaning now */
15102         .maxattr = NL80211_ATTR_MAX,
15103         .policy = nl80211_policy,
15104         .netnsok = true,
15105         .pre_doit = nl80211_pre_doit,
15106         .post_doit = nl80211_post_doit,
15107         .module = THIS_MODULE,
15108         .ops = nl80211_ops,
15109         .n_ops = ARRAY_SIZE(nl80211_ops),
15110         .mcgrps = nl80211_mcgrps,
15111         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15112         .parallel_ops = true,
15113 };
15114
15115 /* notification functions */
15116
15117 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15118                           enum nl80211_commands cmd)
15119 {
15120         struct sk_buff *msg;
15121         struct nl80211_dump_wiphy_state state = {};
15122
15123         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15124                 cmd != NL80211_CMD_DEL_WIPHY);
15125
15126         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15127         if (!msg)
15128                 return;
15129
15130         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15131                 nlmsg_free(msg);
15132                 return;
15133         }
15134
15135         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15136                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15137 }
15138
15139 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15140                                 struct wireless_dev *wdev,
15141                                 enum nl80211_commands cmd)
15142 {
15143         struct sk_buff *msg;
15144
15145         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15146         if (!msg)
15147                 return;
15148
15149         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15150                 nlmsg_free(msg);
15151                 return;
15152         }
15153
15154         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15155                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15156 }
15157
15158 static int nl80211_add_scan_req(struct sk_buff *msg,
15159                                 struct cfg80211_registered_device *rdev)
15160 {
15161         struct cfg80211_scan_request *req = rdev->scan_req;
15162         struct nlattr *nest;
15163         int i;
15164
15165         if (WARN_ON(!req))
15166                 return 0;
15167
15168         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15169         if (!nest)
15170                 goto nla_put_failure;
15171         for (i = 0; i < req->n_ssids; i++) {
15172                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15173                         goto nla_put_failure;
15174         }
15175         nla_nest_end(msg, nest);
15176
15177         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
15178         if (!nest)
15179                 goto nla_put_failure;
15180         for (i = 0; i < req->n_channels; i++) {
15181                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15182                         goto nla_put_failure;
15183         }
15184         nla_nest_end(msg, nest);
15185
15186         if (req->ie &&
15187             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15188                 goto nla_put_failure;
15189
15190         if (req->flags &&
15191             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15192                 goto nla_put_failure;
15193
15194         if (req->info.scan_start_tsf &&
15195             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15196                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
15197              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15198                      req->info.tsf_bssid)))
15199                 goto nla_put_failure;
15200
15201         return 0;
15202  nla_put_failure:
15203         return -ENOBUFS;
15204 }
15205
15206 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15207                                  struct cfg80211_registered_device *rdev,
15208                                  struct wireless_dev *wdev,
15209                                  u32 portid, u32 seq, int flags,
15210                                  u32 cmd)
15211 {
15212         void *hdr;
15213
15214         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15215         if (!hdr)
15216                 return -1;
15217
15218         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15219             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15220                                          wdev->netdev->ifindex)) ||
15221             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15222                               NL80211_ATTR_PAD))
15223                 goto nla_put_failure;
15224
15225         /* ignore errors and send incomplete event anyway */
15226         nl80211_add_scan_req(msg, rdev);
15227
15228         genlmsg_end(msg, hdr);
15229         return 0;
15230
15231  nla_put_failure:
15232         genlmsg_cancel(msg, hdr);
15233         return -EMSGSIZE;
15234 }
15235
15236 static int
15237 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15238                             struct cfg80211_sched_scan_request *req, u32 cmd)
15239 {
15240         void *hdr;
15241
15242         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15243         if (!hdr)
15244                 return -1;
15245
15246         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15247                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15248             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15249             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15250                               NL80211_ATTR_PAD))
15251                 goto nla_put_failure;
15252
15253         genlmsg_end(msg, hdr);
15254         return 0;
15255
15256  nla_put_failure:
15257         genlmsg_cancel(msg, hdr);
15258         return -EMSGSIZE;
15259 }
15260
15261 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15262                              struct wireless_dev *wdev)
15263 {
15264         struct sk_buff *msg;
15265
15266         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15267         if (!msg)
15268                 return;
15269
15270         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15271                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15272                 nlmsg_free(msg);
15273                 return;
15274         }
15275
15276         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15277                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15278 }
15279
15280 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15281                                        struct wireless_dev *wdev, bool aborted)
15282 {
15283         struct sk_buff *msg;
15284
15285         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15286         if (!msg)
15287                 return NULL;
15288
15289         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15290                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15291                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15292                 nlmsg_free(msg);
15293                 return NULL;
15294         }
15295
15296         return msg;
15297 }
15298
15299 /* send message created by nl80211_build_scan_msg() */
15300 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15301                            struct sk_buff *msg)
15302 {
15303         if (!msg)
15304                 return;
15305
15306         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15307                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15308 }
15309
15310 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15311 {
15312         struct sk_buff *msg;
15313
15314         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15315         if (!msg)
15316                 return;
15317
15318         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15319                 nlmsg_free(msg);
15320                 return;
15321         }
15322
15323         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15324                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15325 }
15326
15327 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15328                                           struct regulatory_request *request)
15329 {
15330         /* Userspace can always count this one always being set */
15331         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15332                 goto nla_put_failure;
15333
15334         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15335                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15336                                NL80211_REGDOM_TYPE_WORLD))
15337                         goto nla_put_failure;
15338         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15339                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15340                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15341                         goto nla_put_failure;
15342         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15343                    request->intersect) {
15344                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15345                                NL80211_REGDOM_TYPE_INTERSECTION))
15346                         goto nla_put_failure;
15347         } else {
15348                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15349                                NL80211_REGDOM_TYPE_COUNTRY) ||
15350                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15351                                    request->alpha2))
15352                         goto nla_put_failure;
15353         }
15354
15355         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15356                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15357
15358                 if (wiphy &&
15359                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15360                         goto nla_put_failure;
15361
15362                 if (wiphy &&
15363                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15364                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15365                         goto nla_put_failure;
15366         }
15367
15368         return true;
15369
15370 nla_put_failure:
15371         return false;
15372 }
15373
15374 /*
15375  * This can happen on global regulatory changes or device specific settings
15376  * based on custom regulatory domains.
15377  */
15378 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15379                                      struct regulatory_request *request)
15380 {
15381         struct sk_buff *msg;
15382         void *hdr;
15383
15384         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15385         if (!msg)
15386                 return;
15387
15388         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15389         if (!hdr)
15390                 goto nla_put_failure;
15391
15392         if (!nl80211_reg_change_event_fill(msg, request))
15393                 goto nla_put_failure;
15394
15395         genlmsg_end(msg, hdr);
15396
15397         rcu_read_lock();
15398         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15399                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15400         rcu_read_unlock();
15401
15402         return;
15403
15404 nla_put_failure:
15405         nlmsg_free(msg);
15406 }
15407
15408 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15409                                     struct net_device *netdev,
15410                                     const u8 *buf, size_t len,
15411                                     enum nl80211_commands cmd, gfp_t gfp,
15412                                     int uapsd_queues, const u8 *req_ies,
15413                                     size_t req_ies_len)
15414 {
15415         struct sk_buff *msg;
15416         void *hdr;
15417
15418         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15419         if (!msg)
15420                 return;
15421
15422         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15423         if (!hdr) {
15424                 nlmsg_free(msg);
15425                 return;
15426         }
15427
15428         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15429             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15430             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15431             (req_ies &&
15432              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15433                 goto nla_put_failure;
15434
15435         if (uapsd_queues >= 0) {
15436                 struct nlattr *nla_wmm =
15437                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15438                 if (!nla_wmm)
15439                         goto nla_put_failure;
15440
15441                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15442                                uapsd_queues))
15443                         goto nla_put_failure;
15444
15445                 nla_nest_end(msg, nla_wmm);
15446         }
15447
15448         genlmsg_end(msg, hdr);
15449
15450         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15451                                 NL80211_MCGRP_MLME, gfp);
15452         return;
15453
15454  nla_put_failure:
15455         nlmsg_free(msg);
15456 }
15457
15458 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15459                           struct net_device *netdev, const u8 *buf,
15460                           size_t len, gfp_t gfp)
15461 {
15462         nl80211_send_mlme_event(rdev, netdev, buf, len,
15463                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15464 }
15465
15466 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15467                            struct net_device *netdev, const u8 *buf,
15468                            size_t len, gfp_t gfp, int uapsd_queues,
15469                            const u8 *req_ies, size_t req_ies_len)
15470 {
15471         nl80211_send_mlme_event(rdev, netdev, buf, len,
15472                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15473                                 req_ies, req_ies_len);
15474 }
15475
15476 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15477                          struct net_device *netdev, const u8 *buf,
15478                          size_t len, gfp_t gfp)
15479 {
15480         nl80211_send_mlme_event(rdev, netdev, buf, len,
15481                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15482 }
15483
15484 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15485                            struct net_device *netdev, const u8 *buf,
15486                            size_t len, gfp_t gfp)
15487 {
15488         nl80211_send_mlme_event(rdev, netdev, buf, len,
15489                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15490 }
15491
15492 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15493                                   size_t len)
15494 {
15495         struct wireless_dev *wdev = dev->ieee80211_ptr;
15496         struct wiphy *wiphy = wdev->wiphy;
15497         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15498         const struct ieee80211_mgmt *mgmt = (void *)buf;
15499         u32 cmd;
15500
15501         if (WARN_ON(len < 2))
15502                 return;
15503
15504         if (ieee80211_is_deauth(mgmt->frame_control))
15505                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15506         else
15507                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15508
15509         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15510         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15511                                 NULL, 0);
15512 }
15513 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15514
15515 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15516                                       struct net_device *netdev, int cmd,
15517                                       const u8 *addr, gfp_t gfp)
15518 {
15519         struct sk_buff *msg;
15520         void *hdr;
15521
15522         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15523         if (!msg)
15524                 return;
15525
15526         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15527         if (!hdr) {
15528                 nlmsg_free(msg);
15529                 return;
15530         }
15531
15532         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15533             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15534             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15535             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15536                 goto nla_put_failure;
15537
15538         genlmsg_end(msg, hdr);
15539
15540         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15541                                 NL80211_MCGRP_MLME, gfp);
15542         return;
15543
15544  nla_put_failure:
15545         nlmsg_free(msg);
15546 }
15547
15548 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15549                                struct net_device *netdev, const u8 *addr,
15550                                gfp_t gfp)
15551 {
15552         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15553                                   addr, gfp);
15554 }
15555
15556 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15557                                 struct net_device *netdev, const u8 *addr,
15558                                 gfp_t gfp)
15559 {
15560         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15561                                   addr, gfp);
15562 }
15563
15564 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15565                                  struct net_device *netdev,
15566                                  struct cfg80211_connect_resp_params *cr,
15567                                  gfp_t gfp)
15568 {
15569         struct sk_buff *msg;
15570         void *hdr;
15571
15572         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15573                         cr->fils.kek_len + cr->fils.pmk_len +
15574                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15575         if (!msg)
15576                 return;
15577
15578         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15579         if (!hdr) {
15580                 nlmsg_free(msg);
15581                 return;
15582         }
15583
15584         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15585             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15586             (cr->bssid &&
15587              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15588             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15589                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15590                         cr->status) ||
15591             (cr->status < 0 &&
15592              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15593               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15594                           cr->timeout_reason))) ||
15595             (cr->req_ie &&
15596              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15597             (cr->resp_ie &&
15598              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15599                      cr->resp_ie)) ||
15600             (cr->fils.update_erp_next_seq_num &&
15601              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15602                          cr->fils.erp_next_seq_num)) ||
15603             (cr->status == WLAN_STATUS_SUCCESS &&
15604              ((cr->fils.kek &&
15605                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15606                        cr->fils.kek)) ||
15607               (cr->fils.pmk &&
15608                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15609               (cr->fils.pmkid &&
15610                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15611                 goto nla_put_failure;
15612
15613         genlmsg_end(msg, hdr);
15614
15615         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15616                                 NL80211_MCGRP_MLME, gfp);
15617         return;
15618
15619  nla_put_failure:
15620         nlmsg_free(msg);
15621 }
15622
15623 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15624                          struct net_device *netdev,
15625                          struct cfg80211_roam_info *info, gfp_t gfp)
15626 {
15627         struct sk_buff *msg;
15628         void *hdr;
15629         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15630
15631         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15632                         info->fils.kek_len + info->fils.pmk_len +
15633                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15634         if (!msg)
15635                 return;
15636
15637         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15638         if (!hdr) {
15639                 nlmsg_free(msg);
15640                 return;
15641         }
15642
15643         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15644             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15645             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15646             (info->req_ie &&
15647              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15648                      info->req_ie)) ||
15649             (info->resp_ie &&
15650              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15651                      info->resp_ie)) ||
15652             (info->fils.update_erp_next_seq_num &&
15653              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15654                          info->fils.erp_next_seq_num)) ||
15655             (info->fils.kek &&
15656              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15657                      info->fils.kek)) ||
15658             (info->fils.pmk &&
15659              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15660             (info->fils.pmkid &&
15661              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15662                 goto nla_put_failure;
15663
15664         genlmsg_end(msg, hdr);
15665
15666         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15667                                 NL80211_MCGRP_MLME, gfp);
15668         return;
15669
15670  nla_put_failure:
15671         nlmsg_free(msg);
15672 }
15673
15674 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15675                                   struct net_device *netdev, const u8 *bssid)
15676 {
15677         struct sk_buff *msg;
15678         void *hdr;
15679
15680         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15681         if (!msg)
15682                 return;
15683
15684         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15685         if (!hdr) {
15686                 nlmsg_free(msg);
15687                 return;
15688         }
15689
15690         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15691             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15692             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15693                 goto nla_put_failure;
15694
15695         genlmsg_end(msg, hdr);
15696
15697         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15698                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15699         return;
15700
15701  nla_put_failure:
15702         nlmsg_free(msg);
15703 }
15704
15705 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15706                                struct net_device *netdev, u16 reason,
15707                                const u8 *ie, size_t ie_len, bool from_ap)
15708 {
15709         struct sk_buff *msg;
15710         void *hdr;
15711
15712         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15713         if (!msg)
15714                 return;
15715
15716         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15717         if (!hdr) {
15718                 nlmsg_free(msg);
15719                 return;
15720         }
15721
15722         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15723             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15724             (reason &&
15725              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15726             (from_ap &&
15727              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15728             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15729                 goto nla_put_failure;
15730
15731         genlmsg_end(msg, hdr);
15732
15733         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15734                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15735         return;
15736
15737  nla_put_failure:
15738         nlmsg_free(msg);
15739 }
15740
15741 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15742                              struct net_device *netdev, const u8 *bssid,
15743                              gfp_t gfp)
15744 {
15745         struct sk_buff *msg;
15746         void *hdr;
15747
15748         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15749         if (!msg)
15750                 return;
15751
15752         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15753         if (!hdr) {
15754                 nlmsg_free(msg);
15755                 return;
15756         }
15757
15758         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15759             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15760             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15761                 goto nla_put_failure;
15762
15763         genlmsg_end(msg, hdr);
15764
15765         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15766                                 NL80211_MCGRP_MLME, gfp);
15767         return;
15768
15769  nla_put_failure:
15770         nlmsg_free(msg);
15771 }
15772
15773 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15774                                         const u8 *ie, u8 ie_len,
15775                                         int sig_dbm, gfp_t gfp)
15776 {
15777         struct wireless_dev *wdev = dev->ieee80211_ptr;
15778         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15779         struct sk_buff *msg;
15780         void *hdr;
15781
15782         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15783                 return;
15784
15785         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15786
15787         msg = nlmsg_new(100 + ie_len, gfp);
15788         if (!msg)
15789                 return;
15790
15791         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15792         if (!hdr) {
15793                 nlmsg_free(msg);
15794                 return;
15795         }
15796
15797         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15798             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15799             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15800             (ie_len && ie &&
15801              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15802             (sig_dbm &&
15803              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15804                 goto nla_put_failure;
15805
15806         genlmsg_end(msg, hdr);
15807
15808         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15809                                 NL80211_MCGRP_MLME, gfp);
15810         return;
15811
15812  nla_put_failure:
15813         nlmsg_free(msg);
15814 }
15815 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15816
15817 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15818                                  struct net_device *netdev, const u8 *addr,
15819                                  enum nl80211_key_type key_type, int key_id,
15820                                  const u8 *tsc, gfp_t gfp)
15821 {
15822         struct sk_buff *msg;
15823         void *hdr;
15824
15825         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15826         if (!msg)
15827                 return;
15828
15829         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15830         if (!hdr) {
15831                 nlmsg_free(msg);
15832                 return;
15833         }
15834
15835         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15836             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15837             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15838             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15839             (key_id != -1 &&
15840              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15841             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15842                 goto nla_put_failure;
15843
15844         genlmsg_end(msg, hdr);
15845
15846         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15847                                 NL80211_MCGRP_MLME, gfp);
15848         return;
15849
15850  nla_put_failure:
15851         nlmsg_free(msg);
15852 }
15853
15854 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15855                                     struct ieee80211_channel *channel_before,
15856                                     struct ieee80211_channel *channel_after)
15857 {
15858         struct sk_buff *msg;
15859         void *hdr;
15860         struct nlattr *nl_freq;
15861
15862         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15863         if (!msg)
15864                 return;
15865
15866         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15867         if (!hdr) {
15868                 nlmsg_free(msg);
15869                 return;
15870         }
15871
15872         /*
15873          * Since we are applying the beacon hint to a wiphy we know its
15874          * wiphy_idx is valid
15875          */
15876         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15877                 goto nla_put_failure;
15878
15879         /* Before */
15880         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15881         if (!nl_freq)
15882                 goto nla_put_failure;
15883
15884         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15885                 goto nla_put_failure;
15886         nla_nest_end(msg, nl_freq);
15887
15888         /* After */
15889         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15890         if (!nl_freq)
15891                 goto nla_put_failure;
15892
15893         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15894                 goto nla_put_failure;
15895         nla_nest_end(msg, nl_freq);
15896
15897         genlmsg_end(msg, hdr);
15898
15899         rcu_read_lock();
15900         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15901                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15902         rcu_read_unlock();
15903
15904         return;
15905
15906 nla_put_failure:
15907         nlmsg_free(msg);
15908 }
15909
15910 static void nl80211_send_remain_on_chan_event(
15911         int cmd, struct cfg80211_registered_device *rdev,
15912         struct wireless_dev *wdev, u64 cookie,
15913         struct ieee80211_channel *chan,
15914         unsigned int duration, gfp_t gfp)
15915 {
15916         struct sk_buff *msg;
15917         void *hdr;
15918
15919         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15920         if (!msg)
15921                 return;
15922
15923         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15924         if (!hdr) {
15925                 nlmsg_free(msg);
15926                 return;
15927         }
15928
15929         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15930             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15931                                          wdev->netdev->ifindex)) ||
15932             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15933                               NL80211_ATTR_PAD) ||
15934             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15935             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15936                         NL80211_CHAN_NO_HT) ||
15937             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15938                               NL80211_ATTR_PAD))
15939                 goto nla_put_failure;
15940
15941         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15942             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15943                 goto nla_put_failure;
15944
15945         genlmsg_end(msg, hdr);
15946
15947         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15948                                 NL80211_MCGRP_MLME, gfp);
15949         return;
15950
15951  nla_put_failure:
15952         nlmsg_free(msg);
15953 }
15954
15955 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15956                                struct ieee80211_channel *chan,
15957                                unsigned int duration, gfp_t gfp)
15958 {
15959         struct wiphy *wiphy = wdev->wiphy;
15960         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15961
15962         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15963         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15964                                           rdev, wdev, cookie, chan,
15965                                           duration, gfp);
15966 }
15967 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15968
15969 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15970                                         struct ieee80211_channel *chan,
15971                                         gfp_t gfp)
15972 {
15973         struct wiphy *wiphy = wdev->wiphy;
15974         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15975
15976         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15977         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15978                                           rdev, wdev, cookie, chan, 0, gfp);
15979 }
15980 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15981
15982 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
15983                                         struct ieee80211_channel *chan,
15984                                         gfp_t gfp)
15985 {
15986         struct wiphy *wiphy = wdev->wiphy;
15987         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15988
15989         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
15990         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
15991                                           rdev, wdev, cookie, chan, 0, gfp);
15992 }
15993 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
15994
15995 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15996                       struct station_info *sinfo, gfp_t gfp)
15997 {
15998         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15999         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16000         struct sk_buff *msg;
16001
16002         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16003
16004         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16005         if (!msg)
16006                 return;
16007
16008         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16009                                  rdev, dev, mac_addr, sinfo) < 0) {
16010                 nlmsg_free(msg);
16011                 return;
16012         }
16013
16014         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16015                                 NL80211_MCGRP_MLME, gfp);
16016 }
16017 EXPORT_SYMBOL(cfg80211_new_sta);
16018
16019 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16020                             struct station_info *sinfo, gfp_t gfp)
16021 {
16022         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16023         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16024         struct sk_buff *msg;
16025         struct station_info empty_sinfo = {};
16026
16027         if (!sinfo)
16028                 sinfo = &empty_sinfo;
16029
16030         trace_cfg80211_del_sta(dev, mac_addr);
16031
16032         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16033         if (!msg) {
16034                 cfg80211_sinfo_release_content(sinfo);
16035                 return;
16036         }
16037
16038         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16039                                  rdev, dev, mac_addr, sinfo) < 0) {
16040                 nlmsg_free(msg);
16041                 return;
16042         }
16043
16044         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16045                                 NL80211_MCGRP_MLME, gfp);
16046 }
16047 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16048
16049 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16050                           enum nl80211_connect_failed_reason reason,
16051                           gfp_t gfp)
16052 {
16053         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16054         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16055         struct sk_buff *msg;
16056         void *hdr;
16057
16058         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16059         if (!msg)
16060                 return;
16061
16062         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16063         if (!hdr) {
16064                 nlmsg_free(msg);
16065                 return;
16066         }
16067
16068         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16069             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16070             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16071                 goto nla_put_failure;
16072
16073         genlmsg_end(msg, hdr);
16074
16075         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16076                                 NL80211_MCGRP_MLME, gfp);
16077         return;
16078
16079  nla_put_failure:
16080         nlmsg_free(msg);
16081 }
16082 EXPORT_SYMBOL(cfg80211_conn_failed);
16083
16084 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16085                                        const u8 *addr, gfp_t gfp)
16086 {
16087         struct wireless_dev *wdev = dev->ieee80211_ptr;
16088         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16089         struct sk_buff *msg;
16090         void *hdr;
16091         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16092
16093         if (!nlportid)
16094                 return false;
16095
16096         msg = nlmsg_new(100, gfp);
16097         if (!msg)
16098                 return true;
16099
16100         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16101         if (!hdr) {
16102                 nlmsg_free(msg);
16103                 return true;
16104         }
16105
16106         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16107             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16108             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16109                 goto nla_put_failure;
16110
16111         genlmsg_end(msg, hdr);
16112         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16113         return true;
16114
16115  nla_put_failure:
16116         nlmsg_free(msg);
16117         return true;
16118 }
16119
16120 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16121                                 const u8 *addr, gfp_t gfp)
16122 {
16123         struct wireless_dev *wdev = dev->ieee80211_ptr;
16124         bool ret;
16125
16126         trace_cfg80211_rx_spurious_frame(dev, addr);
16127
16128         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16129                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16130                 trace_cfg80211_return_bool(false);
16131                 return false;
16132         }
16133         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16134                                          addr, gfp);
16135         trace_cfg80211_return_bool(ret);
16136         return ret;
16137 }
16138 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16139
16140 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16141                                         const u8 *addr, gfp_t gfp)
16142 {
16143         struct wireless_dev *wdev = dev->ieee80211_ptr;
16144         bool ret;
16145
16146         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16147
16148         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16149                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16150                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16151                 trace_cfg80211_return_bool(false);
16152                 return false;
16153         }
16154         ret = __nl80211_unexpected_frame(dev,
16155                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16156                                          addr, gfp);
16157         trace_cfg80211_return_bool(ret);
16158         return ret;
16159 }
16160 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16161
16162 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16163                       struct wireless_dev *wdev, u32 nlportid,
16164                       int freq, int sig_dbm,
16165                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16166 {
16167         struct net_device *netdev = wdev->netdev;
16168         struct sk_buff *msg;
16169         void *hdr;
16170
16171         msg = nlmsg_new(100 + len, gfp);
16172         if (!msg)
16173                 return -ENOMEM;
16174
16175         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16176         if (!hdr) {
16177                 nlmsg_free(msg);
16178                 return -ENOMEM;
16179         }
16180
16181         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16182             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16183                                         netdev->ifindex)) ||
16184             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16185                               NL80211_ATTR_PAD) ||
16186             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
16187             (sig_dbm &&
16188              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16189             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16190             (flags &&
16191              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16192                 goto nla_put_failure;
16193
16194         genlmsg_end(msg, hdr);
16195
16196         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16197
16198  nla_put_failure:
16199         nlmsg_free(msg);
16200         return -ENOBUFS;
16201 }
16202
16203 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16204                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16205 {
16206         struct wiphy *wiphy = wdev->wiphy;
16207         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16208         struct net_device *netdev = wdev->netdev;
16209         struct sk_buff *msg;
16210         void *hdr;
16211
16212         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16213
16214         msg = nlmsg_new(100 + len, gfp);
16215         if (!msg)
16216                 return;
16217
16218         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
16219         if (!hdr) {
16220                 nlmsg_free(msg);
16221                 return;
16222         }
16223
16224         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16225             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16226                                    netdev->ifindex)) ||
16227             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16228                               NL80211_ATTR_PAD) ||
16229             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16230             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16231                               NL80211_ATTR_PAD) ||
16232             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16233                 goto nla_put_failure;
16234
16235         genlmsg_end(msg, hdr);
16236
16237         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16238                                 NL80211_MCGRP_MLME, gfp);
16239         return;
16240
16241  nla_put_failure:
16242         nlmsg_free(msg);
16243 }
16244 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16245
16246 static int __nl80211_rx_control_port(struct net_device *dev,
16247                                      struct sk_buff *skb,
16248                                      bool unencrypted, gfp_t gfp)
16249 {
16250         struct wireless_dev *wdev = dev->ieee80211_ptr;
16251         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16252         struct ethhdr *ehdr = eth_hdr(skb);
16253         const u8 *addr = ehdr->h_source;
16254         u16 proto = be16_to_cpu(skb->protocol);
16255         struct sk_buff *msg;
16256         void *hdr;
16257         struct nlattr *frame;
16258
16259         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16260
16261         if (!nlportid)
16262                 return -ENOENT;
16263
16264         msg = nlmsg_new(100 + skb->len, gfp);
16265         if (!msg)
16266                 return -ENOMEM;
16267
16268         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16269         if (!hdr) {
16270                 nlmsg_free(msg);
16271                 return -ENOBUFS;
16272         }
16273
16274         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16275             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16276             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16277                               NL80211_ATTR_PAD) ||
16278             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16279             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16280             (unencrypted && nla_put_flag(msg,
16281                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16282                 goto nla_put_failure;
16283
16284         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16285         if (!frame)
16286                 goto nla_put_failure;
16287
16288         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16289         genlmsg_end(msg, hdr);
16290
16291         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16292
16293  nla_put_failure:
16294         nlmsg_free(msg);
16295         return -ENOBUFS;
16296 }
16297
16298 bool cfg80211_rx_control_port(struct net_device *dev,
16299                               struct sk_buff *skb, bool unencrypted)
16300 {
16301         int ret;
16302
16303         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16304         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16305         trace_cfg80211_return_bool(ret == 0);
16306         return ret == 0;
16307 }
16308 EXPORT_SYMBOL(cfg80211_rx_control_port);
16309
16310 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16311                                             const char *mac, gfp_t gfp)
16312 {
16313         struct wireless_dev *wdev = dev->ieee80211_ptr;
16314         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16315         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16316         void **cb;
16317
16318         if (!msg)
16319                 return NULL;
16320
16321         cb = (void **)msg->cb;
16322
16323         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16324         if (!cb[0]) {
16325                 nlmsg_free(msg);
16326                 return NULL;
16327         }
16328
16329         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16330             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16331                 goto nla_put_failure;
16332
16333         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16334                 goto nla_put_failure;
16335
16336         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16337         if (!cb[1])
16338                 goto nla_put_failure;
16339
16340         cb[2] = rdev;
16341
16342         return msg;
16343  nla_put_failure:
16344         nlmsg_free(msg);
16345         return NULL;
16346 }
16347
16348 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16349 {
16350         void **cb = (void **)msg->cb;
16351         struct cfg80211_registered_device *rdev = cb[2];
16352
16353         nla_nest_end(msg, cb[1]);
16354         genlmsg_end(msg, cb[0]);
16355
16356         memset(msg->cb, 0, sizeof(msg->cb));
16357
16358         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16359                                 NL80211_MCGRP_MLME, gfp);
16360 }
16361
16362 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16363                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16364                               s32 rssi_level, gfp_t gfp)
16365 {
16366         struct sk_buff *msg;
16367         struct wireless_dev *wdev = dev->ieee80211_ptr;
16368         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16369
16370         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16371
16372         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16373                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16374                 return;
16375
16376         if (wdev->cqm_config) {
16377                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16378
16379                 cfg80211_cqm_rssi_update(rdev, dev);
16380
16381                 if (rssi_level == 0)
16382                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16383         }
16384
16385         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16386         if (!msg)
16387                 return;
16388
16389         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16390                         rssi_event))
16391                 goto nla_put_failure;
16392
16393         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16394                                       rssi_level))
16395                 goto nla_put_failure;
16396
16397         cfg80211_send_cqm(msg, gfp);
16398
16399         return;
16400
16401  nla_put_failure:
16402         nlmsg_free(msg);
16403 }
16404 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16405
16406 void cfg80211_cqm_txe_notify(struct net_device *dev,
16407                              const u8 *peer, u32 num_packets,
16408                              u32 rate, u32 intvl, gfp_t gfp)
16409 {
16410         struct sk_buff *msg;
16411
16412         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16413         if (!msg)
16414                 return;
16415
16416         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16417                 goto nla_put_failure;
16418
16419         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16420                 goto nla_put_failure;
16421
16422         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16423                 goto nla_put_failure;
16424
16425         cfg80211_send_cqm(msg, gfp);
16426         return;
16427
16428  nla_put_failure:
16429         nlmsg_free(msg);
16430 }
16431 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16432
16433 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16434                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16435 {
16436         struct sk_buff *msg;
16437
16438         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16439
16440         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16441         if (!msg)
16442                 return;
16443
16444         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16445                 goto nla_put_failure;
16446
16447         cfg80211_send_cqm(msg, gfp);
16448         return;
16449
16450  nla_put_failure:
16451         nlmsg_free(msg);
16452 }
16453 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16454
16455 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16456 {
16457         struct sk_buff *msg;
16458
16459         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16460         if (!msg)
16461                 return;
16462
16463         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16464                 goto nla_put_failure;
16465
16466         cfg80211_send_cqm(msg, gfp);
16467         return;
16468
16469  nla_put_failure:
16470         nlmsg_free(msg);
16471 }
16472 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16473
16474 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16475                                      struct net_device *netdev, const u8 *bssid,
16476                                      const u8 *replay_ctr, gfp_t gfp)
16477 {
16478         struct sk_buff *msg;
16479         struct nlattr *rekey_attr;
16480         void *hdr;
16481
16482         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16483         if (!msg)
16484                 return;
16485
16486         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16487         if (!hdr) {
16488                 nlmsg_free(msg);
16489                 return;
16490         }
16491
16492         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16493             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16494             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16495                 goto nla_put_failure;
16496
16497         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16498         if (!rekey_attr)
16499                 goto nla_put_failure;
16500
16501         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16502                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16503                 goto nla_put_failure;
16504
16505         nla_nest_end(msg, rekey_attr);
16506
16507         genlmsg_end(msg, hdr);
16508
16509         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16510                                 NL80211_MCGRP_MLME, gfp);
16511         return;
16512
16513  nla_put_failure:
16514         nlmsg_free(msg);
16515 }
16516
16517 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16518                                const u8 *replay_ctr, gfp_t gfp)
16519 {
16520         struct wireless_dev *wdev = dev->ieee80211_ptr;
16521         struct wiphy *wiphy = wdev->wiphy;
16522         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16523
16524         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16525         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16526 }
16527 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16528
16529 static void
16530 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16531                                struct net_device *netdev, int index,
16532                                const u8 *bssid, bool preauth, gfp_t gfp)
16533 {
16534         struct sk_buff *msg;
16535         struct nlattr *attr;
16536         void *hdr;
16537
16538         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16539         if (!msg)
16540                 return;
16541
16542         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16543         if (!hdr) {
16544                 nlmsg_free(msg);
16545                 return;
16546         }
16547
16548         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16549             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16550                 goto nla_put_failure;
16551
16552         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16553         if (!attr)
16554                 goto nla_put_failure;
16555
16556         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16557             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16558             (preauth &&
16559              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16560                 goto nla_put_failure;
16561
16562         nla_nest_end(msg, attr);
16563
16564         genlmsg_end(msg, hdr);
16565
16566         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16567                                 NL80211_MCGRP_MLME, gfp);
16568         return;
16569
16570  nla_put_failure:
16571         nlmsg_free(msg);
16572 }
16573
16574 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16575                                      const u8 *bssid, bool preauth, gfp_t gfp)
16576 {
16577         struct wireless_dev *wdev = dev->ieee80211_ptr;
16578         struct wiphy *wiphy = wdev->wiphy;
16579         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16580
16581         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16582         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16583 }
16584 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16585
16586 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16587                                      struct net_device *netdev,
16588                                      struct cfg80211_chan_def *chandef,
16589                                      gfp_t gfp,
16590                                      enum nl80211_commands notif,
16591                                      u8 count)
16592 {
16593         struct sk_buff *msg;
16594         void *hdr;
16595
16596         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16597         if (!msg)
16598                 return;
16599
16600         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16601         if (!hdr) {
16602                 nlmsg_free(msg);
16603                 return;
16604         }
16605
16606         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16607                 goto nla_put_failure;
16608
16609         if (nl80211_send_chandef(msg, chandef))
16610                 goto nla_put_failure;
16611
16612         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16613             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16614                         goto nla_put_failure;
16615
16616         genlmsg_end(msg, hdr);
16617
16618         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16619                                 NL80211_MCGRP_MLME, gfp);
16620         return;
16621
16622  nla_put_failure:
16623         nlmsg_free(msg);
16624 }
16625
16626 void cfg80211_ch_switch_notify(struct net_device *dev,
16627                                struct cfg80211_chan_def *chandef)
16628 {
16629         struct wireless_dev *wdev = dev->ieee80211_ptr;
16630         struct wiphy *wiphy = wdev->wiphy;
16631         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16632
16633         ASSERT_WDEV_LOCK(wdev);
16634
16635         trace_cfg80211_ch_switch_notify(dev, chandef);
16636
16637         wdev->chandef = *chandef;
16638         wdev->preset_chandef = *chandef;
16639
16640         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16641             !WARN_ON(!wdev->current_bss))
16642                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16643
16644         cfg80211_sched_dfs_chan_update(rdev);
16645
16646         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16647                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16648 }
16649 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16650
16651 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16652                                        struct cfg80211_chan_def *chandef,
16653                                        u8 count)
16654 {
16655         struct wireless_dev *wdev = dev->ieee80211_ptr;
16656         struct wiphy *wiphy = wdev->wiphy;
16657         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16658
16659         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16660
16661         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16662                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16663 }
16664 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16665
16666 void
16667 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16668                      const struct cfg80211_chan_def *chandef,
16669                      enum nl80211_radar_event event,
16670                      struct net_device *netdev, gfp_t gfp)
16671 {
16672         struct sk_buff *msg;
16673         void *hdr;
16674
16675         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16676         if (!msg)
16677                 return;
16678
16679         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16680         if (!hdr) {
16681                 nlmsg_free(msg);
16682                 return;
16683         }
16684
16685         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16686                 goto nla_put_failure;
16687
16688         /* NOP and radar events don't need a netdev parameter */
16689         if (netdev) {
16690                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16691
16692                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16693                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16694                                       NL80211_ATTR_PAD))
16695                         goto nla_put_failure;
16696         }
16697
16698         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16699                 goto nla_put_failure;
16700
16701         if (nl80211_send_chandef(msg, chandef))
16702                 goto nla_put_failure;
16703
16704         genlmsg_end(msg, hdr);
16705
16706         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16707                                 NL80211_MCGRP_MLME, gfp);
16708         return;
16709
16710  nla_put_failure:
16711         nlmsg_free(msg);
16712 }
16713
16714 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16715                                        struct sta_opmode_info *sta_opmode,
16716                                        gfp_t gfp)
16717 {
16718         struct sk_buff *msg;
16719         struct wireless_dev *wdev = dev->ieee80211_ptr;
16720         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16721         void *hdr;
16722
16723         if (WARN_ON(!mac))
16724                 return;
16725
16726         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16727         if (!msg)
16728                 return;
16729
16730         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16731         if (!hdr) {
16732                 nlmsg_free(msg);
16733                 return;
16734         }
16735
16736         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16737                 goto nla_put_failure;
16738
16739         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16740                 goto nla_put_failure;
16741
16742         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16743                 goto nla_put_failure;
16744
16745         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16746             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16747                 goto nla_put_failure;
16748
16749         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16750             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16751                 goto nla_put_failure;
16752
16753         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16754             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16755                 goto nla_put_failure;
16756
16757         genlmsg_end(msg, hdr);
16758
16759         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16760                                 NL80211_MCGRP_MLME, gfp);
16761
16762         return;
16763
16764 nla_put_failure:
16765         nlmsg_free(msg);
16766 }
16767 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16768
16769 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16770                            u64 cookie, bool acked, s32 ack_signal,
16771                            bool is_valid_ack_signal, gfp_t gfp)
16772 {
16773         struct wireless_dev *wdev = dev->ieee80211_ptr;
16774         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16775         struct sk_buff *msg;
16776         void *hdr;
16777
16778         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16779
16780         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16781
16782         if (!msg)
16783                 return;
16784
16785         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16786         if (!hdr) {
16787                 nlmsg_free(msg);
16788                 return;
16789         }
16790
16791         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16792             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16793             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16794             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16795                               NL80211_ATTR_PAD) ||
16796             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16797             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16798                                                 ack_signal)))
16799                 goto nla_put_failure;
16800
16801         genlmsg_end(msg, hdr);
16802
16803         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16804                                 NL80211_MCGRP_MLME, gfp);
16805         return;
16806
16807  nla_put_failure:
16808         nlmsg_free(msg);
16809 }
16810 EXPORT_SYMBOL(cfg80211_probe_status);
16811
16812 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16813                                  const u8 *frame, size_t len,
16814                                  int freq, int sig_dbm)
16815 {
16816         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16817         struct sk_buff *msg;
16818         void *hdr;
16819         struct cfg80211_beacon_registration *reg;
16820
16821         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16822
16823         spin_lock_bh(&rdev->beacon_registrations_lock);
16824         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16825                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16826                 if (!msg) {
16827                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16828                         return;
16829                 }
16830
16831                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16832                 if (!hdr)
16833                         goto nla_put_failure;
16834
16835                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16836                     (freq &&
16837                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16838                     (sig_dbm &&
16839                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16840                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16841                         goto nla_put_failure;
16842
16843                 genlmsg_end(msg, hdr);
16844
16845                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16846         }
16847         spin_unlock_bh(&rdev->beacon_registrations_lock);
16848         return;
16849
16850  nla_put_failure:
16851         spin_unlock_bh(&rdev->beacon_registrations_lock);
16852         nlmsg_free(msg);
16853 }
16854 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16855
16856 #ifdef CONFIG_PM
16857 static int cfg80211_net_detect_results(struct sk_buff *msg,
16858                                        struct cfg80211_wowlan_wakeup *wakeup)
16859 {
16860         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16861         struct nlattr *nl_results, *nl_match, *nl_freqs;
16862         int i, j;
16863
16864         nl_results = nla_nest_start_noflag(msg,
16865                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16866         if (!nl_results)
16867                 return -EMSGSIZE;
16868
16869         for (i = 0; i < nd->n_matches; i++) {
16870                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16871
16872                 nl_match = nla_nest_start_noflag(msg, i);
16873                 if (!nl_match)
16874                         break;
16875
16876                 /* The SSID attribute is optional in nl80211, but for
16877                  * simplicity reasons it's always present in the
16878                  * cfg80211 structure.  If a driver can't pass the
16879                  * SSID, that needs to be changed.  A zero length SSID
16880                  * is still a valid SSID (wildcard), so it cannot be
16881                  * used for this purpose.
16882                  */
16883                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16884                             match->ssid.ssid)) {
16885                         nla_nest_cancel(msg, nl_match);
16886                         goto out;
16887                 }
16888
16889                 if (match->n_channels) {
16890                         nl_freqs = nla_nest_start_noflag(msg,
16891                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16892                         if (!nl_freqs) {
16893                                 nla_nest_cancel(msg, nl_match);
16894                                 goto out;
16895                         }
16896
16897                         for (j = 0; j < match->n_channels; j++) {
16898                                 if (nla_put_u32(msg, j, match->channels[j])) {
16899                                         nla_nest_cancel(msg, nl_freqs);
16900                                         nla_nest_cancel(msg, nl_match);
16901                                         goto out;
16902                                 }
16903                         }
16904
16905                         nla_nest_end(msg, nl_freqs);
16906                 }
16907
16908                 nla_nest_end(msg, nl_match);
16909         }
16910
16911 out:
16912         nla_nest_end(msg, nl_results);
16913         return 0;
16914 }
16915
16916 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16917                                    struct cfg80211_wowlan_wakeup *wakeup,
16918                                    gfp_t gfp)
16919 {
16920         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16921         struct sk_buff *msg;
16922         void *hdr;
16923         int size = 200;
16924
16925         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16926
16927         if (wakeup)
16928                 size += wakeup->packet_present_len;
16929
16930         msg = nlmsg_new(size, gfp);
16931         if (!msg)
16932                 return;
16933
16934         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16935         if (!hdr)
16936                 goto free_msg;
16937
16938         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16939             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16940                               NL80211_ATTR_PAD))
16941                 goto free_msg;
16942
16943         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16944                                         wdev->netdev->ifindex))
16945                 goto free_msg;
16946
16947         if (wakeup) {
16948                 struct nlattr *reasons;
16949
16950                 reasons = nla_nest_start_noflag(msg,
16951                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16952                 if (!reasons)
16953                         goto free_msg;
16954
16955                 if (wakeup->disconnect &&
16956                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16957                         goto free_msg;
16958                 if (wakeup->magic_pkt &&
16959                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16960                         goto free_msg;
16961                 if (wakeup->gtk_rekey_failure &&
16962                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16963                         goto free_msg;
16964                 if (wakeup->eap_identity_req &&
16965                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16966                         goto free_msg;
16967                 if (wakeup->four_way_handshake &&
16968                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16969                         goto free_msg;
16970                 if (wakeup->rfkill_release &&
16971                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16972                         goto free_msg;
16973
16974                 if (wakeup->pattern_idx >= 0 &&
16975                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16976                                 wakeup->pattern_idx))
16977                         goto free_msg;
16978
16979                 if (wakeup->tcp_match &&
16980                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16981                         goto free_msg;
16982
16983                 if (wakeup->tcp_connlost &&
16984                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16985                         goto free_msg;
16986
16987                 if (wakeup->tcp_nomoretokens &&
16988                     nla_put_flag(msg,
16989                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16990                         goto free_msg;
16991
16992                 if (wakeup->packet) {
16993                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16994                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16995
16996                         if (!wakeup->packet_80211) {
16997                                 pkt_attr =
16998                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16999                                 len_attr =
17000                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17001                         }
17002
17003                         if (wakeup->packet_len &&
17004                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17005                                 goto free_msg;
17006
17007                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17008                                     wakeup->packet))
17009                                 goto free_msg;
17010                 }
17011
17012                 if (wakeup->net_detect &&
17013                     cfg80211_net_detect_results(msg, wakeup))
17014                                 goto free_msg;
17015
17016                 nla_nest_end(msg, reasons);
17017         }
17018
17019         genlmsg_end(msg, hdr);
17020
17021         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17022                                 NL80211_MCGRP_MLME, gfp);
17023         return;
17024
17025  free_msg:
17026         nlmsg_free(msg);
17027 }
17028 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17029 #endif
17030
17031 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17032                                 enum nl80211_tdls_operation oper,
17033                                 u16 reason_code, gfp_t gfp)
17034 {
17035         struct wireless_dev *wdev = dev->ieee80211_ptr;
17036         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17037         struct sk_buff *msg;
17038         void *hdr;
17039
17040         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17041                                          reason_code);
17042
17043         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17044         if (!msg)
17045                 return;
17046
17047         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17048         if (!hdr) {
17049                 nlmsg_free(msg);
17050                 return;
17051         }
17052
17053         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17054             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17055             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17056             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17057             (reason_code > 0 &&
17058              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17059                 goto nla_put_failure;
17060
17061         genlmsg_end(msg, hdr);
17062
17063         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17064                                 NL80211_MCGRP_MLME, gfp);
17065         return;
17066
17067  nla_put_failure:
17068         nlmsg_free(msg);
17069 }
17070 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17071
17072 static int nl80211_netlink_notify(struct notifier_block * nb,
17073                                   unsigned long state,
17074                                   void *_notify)
17075 {
17076         struct netlink_notify *notify = _notify;
17077         struct cfg80211_registered_device *rdev;
17078         struct wireless_dev *wdev;
17079         struct cfg80211_beacon_registration *reg, *tmp;
17080
17081         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17082                 return NOTIFY_DONE;
17083
17084         rcu_read_lock();
17085
17086         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17087                 struct cfg80211_sched_scan_request *sched_scan_req;
17088
17089                 list_for_each_entry_rcu(sched_scan_req,
17090                                         &rdev->sched_scan_req_list,
17091                                         list) {
17092                         if (sched_scan_req->owner_nlportid == notify->portid) {
17093                                 sched_scan_req->nl_owner_dead = true;
17094                                 schedule_work(&rdev->sched_scan_stop_wk);
17095                         }
17096                 }
17097
17098                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17099                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17100
17101                         if (wdev->owner_nlportid == notify->portid) {
17102                                 wdev->nl_owner_dead = true;
17103                                 schedule_work(&rdev->destroy_work);
17104                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17105                                 schedule_work(&wdev->disconnect_wk);
17106                         }
17107
17108                         cfg80211_release_pmsr(wdev, notify->portid);
17109                 }
17110
17111                 spin_lock_bh(&rdev->beacon_registrations_lock);
17112                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17113                                          list) {
17114                         if (reg->nlportid == notify->portid) {
17115                                 list_del(&reg->list);
17116                                 kfree(reg);
17117                                 break;
17118                         }
17119                 }
17120                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17121         }
17122
17123         rcu_read_unlock();
17124
17125         /*
17126          * It is possible that the user space process that is controlling the
17127          * indoor setting disappeared, so notify the regulatory core.
17128          */
17129         regulatory_netlink_notify(notify->portid);
17130         return NOTIFY_OK;
17131 }
17132
17133 static struct notifier_block nl80211_netlink_notifier = {
17134         .notifier_call = nl80211_netlink_notify,
17135 };
17136
17137 void cfg80211_ft_event(struct net_device *netdev,
17138                        struct cfg80211_ft_event_params *ft_event)
17139 {
17140         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17141         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17142         struct sk_buff *msg;
17143         void *hdr;
17144
17145         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17146
17147         if (!ft_event->target_ap)
17148                 return;
17149
17150         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17151                         GFP_KERNEL);
17152         if (!msg)
17153                 return;
17154
17155         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17156         if (!hdr)
17157                 goto out;
17158
17159         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17160             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17161             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17162                 goto out;
17163
17164         if (ft_event->ies &&
17165             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17166                 goto out;
17167         if (ft_event->ric_ies &&
17168             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17169                     ft_event->ric_ies))
17170                 goto out;
17171
17172         genlmsg_end(msg, hdr);
17173
17174         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17175                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17176         return;
17177  out:
17178         nlmsg_free(msg);
17179 }
17180 EXPORT_SYMBOL(cfg80211_ft_event);
17181
17182 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17183 {
17184         struct cfg80211_registered_device *rdev;
17185         struct sk_buff *msg;
17186         void *hdr;
17187         u32 nlportid;
17188
17189         rdev = wiphy_to_rdev(wdev->wiphy);
17190         if (!rdev->crit_proto_nlportid)
17191                 return;
17192
17193         nlportid = rdev->crit_proto_nlportid;
17194         rdev->crit_proto_nlportid = 0;
17195
17196         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17197         if (!msg)
17198                 return;
17199
17200         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17201         if (!hdr)
17202                 goto nla_put_failure;
17203
17204         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17205             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17206                               NL80211_ATTR_PAD))
17207                 goto nla_put_failure;
17208
17209         genlmsg_end(msg, hdr);
17210
17211         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17212         return;
17213
17214  nla_put_failure:
17215         nlmsg_free(msg);
17216 }
17217 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17218
17219 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17220 {
17221         struct wiphy *wiphy = wdev->wiphy;
17222         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17223         struct sk_buff *msg;
17224         void *hdr;
17225
17226         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17227         if (!msg)
17228                 return;
17229
17230         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17231         if (!hdr)
17232                 goto out;
17233
17234         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17235             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17236             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17237                               NL80211_ATTR_PAD))
17238                 goto out;
17239
17240         genlmsg_end(msg, hdr);
17241
17242         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17243                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17244         return;
17245  out:
17246         nlmsg_free(msg);
17247 }
17248
17249 int cfg80211_external_auth_request(struct net_device *dev,
17250                                    struct cfg80211_external_auth_params *params,
17251                                    gfp_t gfp)
17252 {
17253         struct wireless_dev *wdev = dev->ieee80211_ptr;
17254         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17255         struct sk_buff *msg;
17256         void *hdr;
17257
17258         if (!wdev->conn_owner_nlportid)
17259                 return -EINVAL;
17260
17261         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17262         if (!msg)
17263                 return -ENOMEM;
17264
17265         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17266         if (!hdr)
17267                 goto nla_put_failure;
17268
17269         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17270             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17271             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17272             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17273                         params->action) ||
17274             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17275             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17276                     params->ssid.ssid))
17277                 goto nla_put_failure;
17278
17279         genlmsg_end(msg, hdr);
17280         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17281                         wdev->conn_owner_nlportid);
17282         return 0;
17283
17284  nla_put_failure:
17285         nlmsg_free(msg);
17286         return -ENOBUFS;
17287 }
17288 EXPORT_SYMBOL(cfg80211_external_auth_request);
17289
17290 void cfg80211_update_owe_info_event(struct net_device *netdev,
17291                                     struct cfg80211_update_owe_info *owe_info,
17292                                     gfp_t gfp)
17293 {
17294         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17295         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17296         struct sk_buff *msg;
17297         void *hdr;
17298
17299         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17300
17301         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17302         if (!msg)
17303                 return;
17304
17305         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17306         if (!hdr)
17307                 goto nla_put_failure;
17308
17309         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17310             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17311             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17312                 goto nla_put_failure;
17313
17314         if (!owe_info->ie_len ||
17315             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17316                 goto nla_put_failure;
17317
17318         genlmsg_end(msg, hdr);
17319
17320         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17321                                 NL80211_MCGRP_MLME, gfp);
17322         return;
17323
17324 nla_put_failure:
17325         genlmsg_cancel(msg, hdr);
17326         nlmsg_free(msg);
17327 }
17328 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17329
17330 /* initialisation/exit functions */
17331
17332 int __init nl80211_init(void)
17333 {
17334         int err;
17335
17336         err = genl_register_family(&nl80211_fam);
17337         if (err)
17338                 return err;
17339
17340         err = netlink_register_notifier(&nl80211_netlink_notifier);
17341         if (err)
17342                 goto err_out;
17343
17344         return 0;
17345  err_out:
17346         genl_unregister_family(&nl80211_fam);
17347         return err;
17348 }
17349
17350 void nl80211_exit(void)
17351 {
17352         netlink_unregister_notifier(&nl80211_netlink_notifier);
17353         genl_unregister_family(&nl80211_fam);
17354 }