net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2020 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  68 {
  69         struct cfg80211_registered_device *rdev;
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         ASSERT_RTNL();
  78
  79         if (!have_ifidx && !have_wdev_id)
  80                 return ERR_PTR(-EINVAL);
  81
  82         if (have_ifidx)
  83                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  84         if (have_wdev_id) {
  85                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  86                 wiphy_idx = wdev_id >> 32;
  87         }
  88
  89         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  90                 struct wireless_dev *wdev;
  91
  92                 if (wiphy_net(&rdev->wiphy) != netns)
  93                         continue;
  94
  95                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  96                         continue;
  97
  98                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  99                         if (have_ifidx && wdev->netdev &&
 100                             wdev->netdev->ifindex == ifidx) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 105                                 result = wdev;
 106                                 break;
 107                         }
 108                 }
 109
 110                 if (result)
 111                         break;
 112         }
 113
 114         if (result)
 115                 return result;
 116         return ERR_PTR(-ENODEV);
 117 }
 118
 119 static struct cfg80211_registered_device *
 120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 121 {
 122         struct cfg80211_registered_device *rdev = NULL, *tmp;
 123         struct net_device *netdev;
 124
 125         ASSERT_RTNL();
 126
 127         if (!attrs[NL80211_ATTR_WIPHY] &&
 128             !attrs[NL80211_ATTR_IFINDEX] &&
 129             !attrs[NL80211_ATTR_WDEV])
 130                 return ERR_PTR(-EINVAL);
 131
 132         if (attrs[NL80211_ATTR_WIPHY])
 133                 rdev = cfg80211_rdev_by_wiphy_idx(
 134                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 135
 136         if (attrs[NL80211_ATTR_WDEV]) {
 137                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 138                 struct wireless_dev *wdev;
 139                 bool found = false;
 140
 141                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 142                 if (tmp) {
 143                         /* make sure wdev exists */
 144                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 145                                 if (wdev->identifier != (u32)wdev_id)
 146                                         continue;
 147                                 found = true;
 148                                 break;
 149                         }
 150
 151                         if (!found)
 152                                 tmp = NULL;
 153
 154                         if (rdev && tmp != rdev)
 155                                 return ERR_PTR(-EINVAL);
 156                         rdev = tmp;
 157                 }
 158         }
 159
 160         if (attrs[NL80211_ATTR_IFINDEX]) {
 161                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 162
 163                 netdev = __dev_get_by_index(netns, ifindex);
 164                 if (netdev) {
 165                         if (netdev->ieee80211_ptr)
 166                                 tmp = wiphy_to_rdev(
 167                                         netdev->ieee80211_ptr->wiphy);
 168                         else
 169                                 tmp = NULL;
 170
 171                         /* not wireless device -- return error */
 172                         if (!tmp)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         /* mismatch -- return error */
 176                         if (rdev && tmp != rdev)
 177                                 return ERR_PTR(-EINVAL);
 178
 179                         rdev = tmp;
 180                 }
 181         }
 182
 183         if (!rdev)
 184                 return ERR_PTR(-ENODEV);
 185
 186         if (netns != wiphy_net(&rdev->wiphy))
 187                 return ERR_PTR(-ENODEV);
 188
 189         return rdev;
 190 }
 191
 192 /*
 193  * This function returns a pointer to the driver
 194  * that the genl_info item that is passed refers to.
 195  *
 196  * The result of this can be a PTR_ERR and hence must
 197  * be checked with IS_ERR() for errors.
 198  */
 199 static struct cfg80211_registered_device *
 200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 201 {
 202         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 203 }
 204
 205 static int validate_beacon_head(const struct nlattr *attr,
 206                                 struct netlink_ext_ack *extack)
 207 {
 208         const u8 *data = nla_data(attr);
 209         unsigned int len = nla_len(attr);
 210         const struct element *elem;
 211         const struct ieee80211_mgmt *mgmt = (void *)data;
 212         bool s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 213         unsigned int fixedlen, hdrlen;
 214
 215         if (s1g_bcn) {
 216                 fixedlen = offsetof(struct ieee80211_ext,
 217                                     u.s1g_beacon.variable);
 218                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 219         } else {
 220                 fixedlen = offsetof(struct ieee80211_mgmt,
 221                                     u.beacon.variable);
 222                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 223         }
 224
 225         if (len < fixedlen)
 226                 goto err;
 227
 228         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 229                 goto err;
 230
 231         data += fixedlen;
 232         len -= fixedlen;
 233
 234         for_each_element(elem, data, len) {
 235                 /* nothing */
 236         }
 237
 238         if (for_each_element_completed(elem, data, len))
 239                 return 0;
 240
 241 err:
 242         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 243         return -EINVAL;
 244 }
 245
 246 static int validate_ie_attr(const struct nlattr *attr,
 247                             struct netlink_ext_ack *extack)
 248 {
 249         const u8 *data = nla_data(attr);
 250         unsigned int len = nla_len(attr);
 251         const struct element *elem;
 252
 253         for_each_element(elem, data, len) {
 254                 /* nothing */
 255         }
 256
 257         if (for_each_element_completed(elem, data, len))
 258                 return 0;
 259
 260         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 261         return -EINVAL;
 262 }
 263
 264 /* policy for the attributes */
 265 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 266
 267 static const struct nla_policy
 268 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 269         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 270         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 271                                         .len = U8_MAX },
 272         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 273                                              .len = U8_MAX },
 274 };
 275
 276 static const struct nla_policy
 277 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 278         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 279         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 280         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 281                 NLA_POLICY_MAX(NLA_U8, 15),
 282         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 283         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 284                 NLA_POLICY_MAX(NLA_U8, 15),
 285         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 286                 NLA_POLICY_MAX(NLA_U8, 31),
 287         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 288         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 289         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 290         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 291         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 292 };
 293
 294 static const struct nla_policy
 295 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 296         [NL80211_PMSR_TYPE_FTM] =
 297                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 298 };
 299
 300 static const struct nla_policy
 301 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 302         [NL80211_PMSR_REQ_ATTR_DATA] =
 303                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 304         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 305 };
 306
 307 static const struct nla_policy
 308 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 309         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 310         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 311         [NL80211_PMSR_PEER_ATTR_REQ] =
 312                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 313         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 314 };
 315
 316 static const struct nla_policy
 317 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 318         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 319         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 320         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 321         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 322         [NL80211_PMSR_ATTR_PEERS] =
 323                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 324 };
 325
 326 static const struct nla_policy
 327 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 328         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 329                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 330         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 331                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 332         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 333                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 334         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 335                 NLA_POLICY_EXACT_LEN(8),
 336         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 337                 NLA_POLICY_EXACT_LEN(8),
 338         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 339 };
 340
 341 static const struct nla_policy
 342 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 343         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 344         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 345         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 346 };
 347
 348 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 349         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 350                                     .len = NL80211_MAX_SUPP_RATES },
 351         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 352                                 .len = NL80211_MAX_SUPP_HT_RATES },
 353         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 354         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 355         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 356         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 357                                                    NL80211_RATE_INFO_HE_GI_0_8,
 358                                                    NL80211_RATE_INFO_HE_GI_3_2),
 359         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 360                                                    NL80211_RATE_INFO_HE_1XLTF,
 361                                                    NL80211_RATE_INFO_HE_4XLTF),
 362 };
 363
 364 static const struct nla_policy
 365 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 366         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 367         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 368         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 369         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 370         [NL80211_TID_CONFIG_ATTR_NOACK] =
 371                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 372         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 373         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 374         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 375                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 376         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 377                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 378         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 379                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 380         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 381                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 382         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 383                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 384 };
 385
 386 static const struct nla_policy
 387 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 388         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 389         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 390         NLA_POLICY_RANGE(NLA_BINARY,
 391                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 392                          IEEE80211_MAX_DATA_LEN),
 393 };
 394
 395 static const struct nla_policy
 396 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 397         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 398         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 399                                                        .len = IEEE80211_MAX_DATA_LEN }
 400 };
 401
 402 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 403         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 404         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 405         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 406                                       .len = 20-1 },
 407         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 408
 409         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 410         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 411         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 412                                                 NL80211_EDMG_CHANNELS_MIN,
 413                                                 NL80211_EDMG_CHANNELS_MAX),
 414         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 415                                                 NL80211_EDMG_BW_CONFIG_MIN,
 416                                                 NL80211_EDMG_BW_CONFIG_MAX),
 417
 418         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 419         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 420         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 421         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 422
 423         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 424         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 425         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 426         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 427         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 428         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 429
 430         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 431         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 432         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 433
 434         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 435         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 436
 437         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 438         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 439                                     .len = WLAN_MAX_KEY_LEN },
 440         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 441         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 442         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 443         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 444         [NL80211_ATTR_KEY_TYPE] =
 445                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 446
 447         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 448         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 449         [NL80211_ATTR_BEACON_HEAD] =
 450                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 451                                        IEEE80211_MAX_DATA_LEN),
 452         [NL80211_ATTR_BEACON_TAIL] =
 453                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 454                                        IEEE80211_MAX_DATA_LEN),
 455         [NL80211_ATTR_STA_AID] =
 456                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 457         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 458         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 459         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 460                                                .len = NL80211_MAX_SUPP_RATES },
 461         [NL80211_ATTR_STA_PLINK_ACTION] =
 462                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 463         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 464                 NLA_POLICY_RANGE(NLA_U8,
 465                                  NL80211_TX_POWER_AUTOMATIC,
 466                                  NL80211_TX_POWER_FIXED),
 467         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 468         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 469         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 470         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 471                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 472         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 473
 474         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 475         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 476
 477         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 478         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 479         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 480         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 481                                            .len = NL80211_MAX_SUPP_RATES },
 482         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 483
 484         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 485         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 486
 487         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 488
 489         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 490         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 491                                                    validate_ie_attr,
 492                                                    IEEE80211_MAX_DATA_LEN),
 493         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 494         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 495
 496         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 497                                 .len = IEEE80211_MAX_SSID_LEN },
 498         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 499         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 500         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 501         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 502         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 503                                                   NL80211_MFP_NO,
 504                                                   NL80211_MFP_OPTIONAL),
 505         [NL80211_ATTR_STA_FLAGS2] = {
 506                 .len = sizeof(struct nl80211_sta_flag_update),
 507         },
 508         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 509         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 510         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 511         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 512         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 513         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 514         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 515         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 516         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 517         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 518         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 519         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 520         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 521         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 522         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 523                                  .len = IEEE80211_MAX_DATA_LEN },
 524         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 525         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 526                                                    NL80211_PS_DISABLED,
 527                                                    NL80211_PS_ENABLED),
 528         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 529         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 530         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 531         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 532         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 533         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 534         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 535         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 536         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 537         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 538         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 539         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 540         [NL80211_ATTR_STA_PLINK_STATE] =
 541                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 542         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 543         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 544         [NL80211_ATTR_MESH_PEER_AID] =
 545                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 546         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 547         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 548         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 549         [NL80211_ATTR_HIDDEN_SSID] =
 550                 NLA_POLICY_RANGE(NLA_U32,
 551                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 552                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 553         [NL80211_ATTR_IE_PROBE_RESP] =
 554                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 555                                        IEEE80211_MAX_DATA_LEN),
 556         [NL80211_ATTR_IE_ASSOC_RESP] =
 557                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 558                                        IEEE80211_MAX_DATA_LEN),
 559         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 560         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 561         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 562         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 563         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 564         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 565         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 566         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 567         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 568         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 569         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 570                                       .len = IEEE80211_MAX_DATA_LEN },
 571         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 572         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 573         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 574                 .len = NL80211_HT_CAPABILITY_LEN
 575         },
 576         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 577         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 578         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 579         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 580         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 581
 582         /* need to include at least Auth Transaction and Status Code */
 583         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 584
 585         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 586         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 587         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 588         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 589         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 590                 NLA_POLICY_RANGE(NLA_U32,
 591                                  NL80211_MESH_POWER_UNKNOWN + 1,
 592                                  NL80211_MESH_POWER_MAX),
 593         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 594         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 595         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 596         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 597         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 598         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 600                 .len = NL80211_VHT_CAPABILITY_LEN,
 601         },
 602         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 603         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 604                                   .len = IEEE80211_MAX_DATA_LEN },
 605         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 606         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 607                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 608         [NL80211_ATTR_PEER_AID] =
 609                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 610         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 611         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 612         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 613         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 614         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 615         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 616         /*
 617          * The value of the Length field of the Supported Operating
 618          * Classes element is between 2 and 253.
 619          */
 620         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 621                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 622         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 623         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 624         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 625         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 626         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 627         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 628                                                   IEEE80211_QOS_MAP_LEN_MIN,
 629                                                   IEEE80211_QOS_MAP_LEN_MAX),
 630         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 631         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 632         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 633         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 634         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 635         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 636         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 637         [NL80211_ATTR_USER_PRIO] =
 638                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 639         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 640         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 641         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 642         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 643         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 644         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 645         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 646         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 647         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 648         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 649         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 650                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 651         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 652                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 653         },
 654         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 655         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 656         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 657         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 658         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 659                                     .len = FILS_MAX_KEK_LEN },
 660         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 661         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 662         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 663         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 664         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 665                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 666         },
 667         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 668         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 669                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 670         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 671                                           .len = FILS_ERP_MAX_REALM_LEN },
 672         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 673         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 674                                         .len = FILS_ERP_MAX_RRK_LEN },
 675         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 676         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 677         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 678         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 679         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 680
 681         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 682         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 683         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 684         [NL80211_ATTR_HE_CAPABILITY] =
 685                 NLA_POLICY_RANGE(NLA_BINARY,
 686                                  NL80211_HE_MIN_CAPABILITY_LEN,
 687                                  NL80211_HE_MAX_CAPABILITY_LEN),
 688         [NL80211_ATTR_FTM_RESPONDER] =
 689                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 690         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 691         [NL80211_ATTR_PEER_MEASUREMENTS] =
 692                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 693         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 694         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 695                                         .len = SAE_PASSWORD_MAX_LEN },
 696         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 697         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 698         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 699         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 700         [NL80211_ATTR_TID_CONFIG] =
 701                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 702         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 703         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 704         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 705         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 706         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 707         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 708         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 709                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 710         [NL80211_ATTR_FILS_DISCOVERY] =
 711                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 712         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 713                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 714         [NL80211_ATTR_S1G_CAPABILITY] =
 715                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 716         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 717                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 718 };
 719
 720 /* policy for the key attributes */
 721 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 722         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 723         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 724         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 725         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 726         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 727         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 728         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 729         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 730         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 731 };
 732
 733 /* policy for the key default flags */
 734 static const struct nla_policy
 735 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 736         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 737         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 738 };
 739
 740 #ifdef CONFIG_PM
 741 /* policy for WoWLAN attributes */
 742 static const struct nla_policy
 743 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 744         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 745         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 746         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 747         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 748         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 749         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 750         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 751         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 752         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 753         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 754 };
 755
 756 static const struct nla_policy
 757 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 758         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 759         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 760         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 761         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 762         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 763         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 764         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 765                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 766         },
 767         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 768                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 769         },
 770         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 771         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 772         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 773 };
 774 #endif /* CONFIG_PM */
 775
 776 /* policy for coalesce rule attributes */
 777 static const struct nla_policy
 778 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 779         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 780         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 781                 NLA_POLICY_RANGE(NLA_U32,
 782                                  NL80211_COALESCE_CONDITION_MATCH,
 783                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 784         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 785 };
 786
 787 /* policy for GTK rekey offload attributes */
 788 static const struct nla_policy
 789 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 790         [NL80211_REKEY_DATA_KEK] = {
 791                 .type = NLA_BINARY,
 792                 .len = NL80211_KEK_EXT_LEN
 793         },
 794         [NL80211_REKEY_DATA_KCK] = {
 795                 .type = NLA_BINARY,
 796                 .len = NL80211_KCK_EXT_LEN
 797         },
 798         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 799         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 800 };
 801
 802 static const struct nla_policy
 803 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 804         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 805         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 806         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 807         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 808 };
 809
 810 static const struct nla_policy
 811 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 812         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 813                                                  .len = IEEE80211_MAX_SSID_LEN },
 814         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 815         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 816         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 817                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 818 };
 819
 820 static const struct nla_policy
 821 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 822         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 823         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 824 };
 825
 826 static const struct nla_policy
 827 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 828         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 829         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 830         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 831                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 832         },
 833 };
 834
 835 /* policy for NAN function attributes */
 836 static const struct nla_policy
 837 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 838         [NL80211_NAN_FUNC_TYPE] =
 839                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 840         [NL80211_NAN_FUNC_SERVICE_ID] = {
 841                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 842         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 843         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 844         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 845         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 846         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 847         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 848         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 849         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 850         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 851                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 852         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 853         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 854         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 855         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 856         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 857 };
 858
 859 /* policy for Service Response Filter attributes */
 860 static const struct nla_policy
 861 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 862         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 863         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 864                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 865         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 866         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 867 };
 868
 869 /* policy for packet pattern attributes */
 870 static const struct nla_policy
 871 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 872         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 873         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 874         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 875 };
 876
 877 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 878                               struct cfg80211_registered_device **rdev,
 879                               struct wireless_dev **wdev)
 880 {
 881         int err;
 882
 883         if (!cb->args[0]) {
 884                 struct nlattr **attrbuf;
 885
 886                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 887                                   GFP_KERNEL);
 888                 if (!attrbuf)
 889                         return -ENOMEM;
 890
 891                 err = nlmsg_parse_deprecated(cb->nlh,
 892                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 893                                              attrbuf, nl80211_fam.maxattr,
 894                                              nl80211_policy, NULL);
 895                 if (err) {
 896                         kfree(attrbuf);
 897                         return err;
 898                 }
 899
 900                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 901                                                    attrbuf);
 902                 kfree(attrbuf);
 903                 if (IS_ERR(*wdev))
 904                         return PTR_ERR(*wdev);
 905                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 906                 /* 0 is the first index - add 1 to parse only once */
 907                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 908                 cb->args[1] = (*wdev)->identifier;
 909         } else {
 910                 /* subtract the 1 again here */
 911                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 912                 struct wireless_dev *tmp;
 913
 914                 if (!wiphy)
 915                         return -ENODEV;
 916                 *rdev = wiphy_to_rdev(wiphy);
 917                 *wdev = NULL;
 918
 919                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 920                         if (tmp->identifier == cb->args[1]) {
 921                                 *wdev = tmp;
 922                                 break;
 923                         }
 924                 }
 925
 926                 if (!*wdev)
 927                         return -ENODEV;
 928         }
 929
 930         return 0;
 931 }
 932
 933 /* message building helper */
 934 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 935                      int flags, u8 cmd)
 936 {
 937         /* since there is no private header just add the generic one */
 938         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 939 }
 940
 941 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 942                                      const struct ieee80211_reg_rule *rule)
 943 {
 944         int j;
 945         struct nlattr *nl_wmm_rules =
 946                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 947
 948         if (!nl_wmm_rules)
 949                 goto nla_put_failure;
 950
 951         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 952                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 953
 954                 if (!nl_wmm_rule)
 955                         goto nla_put_failure;
 956
 957                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 958                                 rule->wmm_rule.client[j].cw_min) ||
 959                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 960                                 rule->wmm_rule.client[j].cw_max) ||
 961                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 962                                rule->wmm_rule.client[j].aifsn) ||
 963                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 964                                 rule->wmm_rule.client[j].cot))
 965                         goto nla_put_failure;
 966
 967                 nla_nest_end(msg, nl_wmm_rule);
 968         }
 969         nla_nest_end(msg, nl_wmm_rules);
 970
 971         return 0;
 972
 973 nla_put_failure:
 974         return -ENOBUFS;
 975 }
 976
 977 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 978                                    struct ieee80211_channel *chan,
 979                                    bool large)
 980 {
 981         /* Some channels must be completely excluded from the
 982          * list to protect old user-space tools from breaking
 983          */
 984         if (!large && chan->flags &
 985             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 986                 return 0;
 987         if (!large && chan->freq_offset)
 988                 return 0;
 989
 990         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 991                         chan->center_freq))
 992                 goto nla_put_failure;
 993
 994         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
 995                 goto nla_put_failure;
 996
 997         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 998             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 999                 goto nla_put_failure;
1000         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1001                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1002                         goto nla_put_failure;
1003                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1004                         goto nla_put_failure;
1005         }
1006         if (chan->flags & IEEE80211_CHAN_RADAR) {
1007                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1008                         goto nla_put_failure;
1009                 if (large) {
1010                         u32 time;
1011
1012                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1013
1014                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1015                                         chan->dfs_state))
1016                                 goto nla_put_failure;
1017                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1018                                         time))
1019                                 goto nla_put_failure;
1020                         if (nla_put_u32(msg,
1021                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1022                                         chan->dfs_cac_ms))
1023                                 goto nla_put_failure;
1024                 }
1025         }
1026
1027         if (large) {
1028                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1029                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1030                         goto nla_put_failure;
1031                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1032                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1033                         goto nla_put_failure;
1034                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1035                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1036                         goto nla_put_failure;
1037                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1038                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1039                         goto nla_put_failure;
1040                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1041                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1042                         goto nla_put_failure;
1043                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1044                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1045                         goto nla_put_failure;
1046                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1047                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1048                         goto nla_put_failure;
1049                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1050                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1051                         goto nla_put_failure;
1052                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1053                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1054                         goto nla_put_failure;
1055                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1056                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1057                         goto nla_put_failure;
1058                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1059                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1060                         goto nla_put_failure;
1061                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1062                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1063                         goto nla_put_failure;
1064                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1065                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1066                         goto nla_put_failure;
1067                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1068                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1069                         goto nla_put_failure;
1070         }
1071
1072         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1073                         DBM_TO_MBM(chan->max_power)))
1074                 goto nla_put_failure;
1075
1076         if (large) {
1077                 const struct ieee80211_reg_rule *rule =
1078                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1079
1080                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1081                         if (nl80211_msg_put_wmm_rules(msg, rule))
1082                                 goto nla_put_failure;
1083                 }
1084         }
1085
1086         return 0;
1087
1088  nla_put_failure:
1089         return -ENOBUFS;
1090 }
1091
1092 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1093                                   struct cfg80211_txq_stats *txqstats,
1094                                   int attrtype)
1095 {
1096         struct nlattr *txqattr;
1097
1098 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1099         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1100             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1101                 return false;                                             \
1102         } while (0)
1103
1104         txqattr = nla_nest_start_noflag(msg, attrtype);
1105         if (!txqattr)
1106                 return false;
1107
1108         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1109         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1110         PUT_TXQVAL_U32(FLOWS, flows);
1111         PUT_TXQVAL_U32(DROPS, drops);
1112         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1113         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1114         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1115         PUT_TXQVAL_U32(COLLISIONS, collisions);
1116         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1117         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1118         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1119         nla_nest_end(msg, txqattr);
1120
1121 #undef PUT_TXQVAL_U32
1122         return true;
1123 }
1124
1125 /* netlink command implementations */
1126
1127 struct key_parse {
1128         struct key_params p;
1129         int idx;
1130         int type;
1131         bool def, defmgmt, defbeacon;
1132         bool def_uni, def_multi;
1133 };
1134
1135 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1136                                  struct key_parse *k)
1137 {
1138         struct nlattr *tb[NL80211_KEY_MAX + 1];
1139         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1140                                               nl80211_key_policy,
1141                                               info->extack);
1142         if (err)
1143                 return err;
1144
1145         k->def = !!tb[NL80211_KEY_DEFAULT];
1146         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1147         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1148
1149         if (k->def) {
1150                 k->def_uni = true;
1151                 k->def_multi = true;
1152         }
1153         if (k->defmgmt || k->defbeacon)
1154                 k->def_multi = true;
1155
1156         if (tb[NL80211_KEY_IDX])
1157                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1158
1159         if (tb[NL80211_KEY_DATA]) {
1160                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1161                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1162         }
1163
1164         if (tb[NL80211_KEY_SEQ]) {
1165                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1166                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1167         }
1168
1169         if (tb[NL80211_KEY_CIPHER])
1170                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1171
1172         if (tb[NL80211_KEY_TYPE])
1173                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1174
1175         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1176                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1177
1178                 err = nla_parse_nested_deprecated(kdt,
1179                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1180                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1181                                                   nl80211_key_default_policy,
1182                                                   info->extack);
1183                 if (err)
1184                         return err;
1185
1186                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1187                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1188         }
1189
1190         if (tb[NL80211_KEY_MODE])
1191                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1192
1193         return 0;
1194 }
1195
1196 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1197 {
1198         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1199                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1200                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1201         }
1202
1203         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1204                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1205                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1206         }
1207
1208         if (info->attrs[NL80211_ATTR_KEY_IDX])
1209                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1210
1211         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1212                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1213
1214         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1215         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1216
1217         if (k->def) {
1218                 k->def_uni = true;
1219                 k->def_multi = true;
1220         }
1221         if (k->defmgmt)
1222                 k->def_multi = true;
1223
1224         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1225                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1226
1227         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1228                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1229                 int err = nla_parse_nested_deprecated(kdt,
1230                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1231                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1232                                                       nl80211_key_default_policy,
1233                                                       info->extack);
1234                 if (err)
1235                         return err;
1236
1237                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1238                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1239         }
1240
1241         return 0;
1242 }
1243
1244 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1245 {
1246         int err;
1247
1248         memset(k, 0, sizeof(*k));
1249         k->idx = -1;
1250         k->type = -1;
1251
1252         if (info->attrs[NL80211_ATTR_KEY])
1253                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1254         else
1255                 err = nl80211_parse_key_old(info, k);
1256
1257         if (err)
1258                 return err;
1259
1260         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1261             (k->defbeacon ? 1 : 0) > 1) {
1262                 GENL_SET_ERR_MSG(info,
1263                                  "key with multiple default flags is invalid");
1264                 return -EINVAL;
1265         }
1266
1267         if (k->defmgmt || k->defbeacon) {
1268                 if (k->def_uni || !k->def_multi) {
1269                         GENL_SET_ERR_MSG(info,
1270                                          "defmgmt/defbeacon key must be mcast");
1271                         return -EINVAL;
1272                 }
1273         }
1274
1275         if (k->idx != -1) {
1276                 if (k->defmgmt) {
1277                         if (k->idx < 4 || k->idx > 5) {
1278                                 GENL_SET_ERR_MSG(info,
1279                                                  "defmgmt key idx not 4 or 5");
1280                                 return -EINVAL;
1281                         }
1282                 } else if (k->defbeacon) {
1283                         if (k->idx < 6 || k->idx > 7) {
1284                                 GENL_SET_ERR_MSG(info,
1285                                                  "defbeacon key idx not 6 or 7");
1286                                 return -EINVAL;
1287                         }
1288                 } else if (k->def) {
1289                         if (k->idx < 0 || k->idx > 3) {
1290                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1291                                 return -EINVAL;
1292                         }
1293                 } else {
1294                         if (k->idx < 0 || k->idx > 7) {
1295                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1296                                 return -EINVAL;
1297                         }
1298                 }
1299         }
1300
1301         return 0;
1302 }
1303
1304 static struct cfg80211_cached_keys *
1305 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1306                        struct genl_info *info, bool *no_ht)
1307 {
1308         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1309         struct key_parse parse;
1310         struct nlattr *key;
1311         struct cfg80211_cached_keys *result;
1312         int rem, err, def = 0;
1313         bool have_key = false;
1314
1315         nla_for_each_nested(key, keys, rem) {
1316                 have_key = true;
1317                 break;
1318         }
1319
1320         if (!have_key)
1321                 return NULL;
1322
1323         result = kzalloc(sizeof(*result), GFP_KERNEL);
1324         if (!result)
1325                 return ERR_PTR(-ENOMEM);
1326
1327         result->def = -1;
1328
1329         nla_for_each_nested(key, keys, rem) {
1330                 memset(&parse, 0, sizeof(parse));
1331                 parse.idx = -1;
1332
1333                 err = nl80211_parse_key_new(info, key, &parse);
1334                 if (err)
1335                         goto error;
1336                 err = -EINVAL;
1337                 if (!parse.p.key)
1338                         goto error;
1339                 if (parse.idx < 0 || parse.idx > 3) {
1340                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1341                         goto error;
1342                 }
1343                 if (parse.def) {
1344                         if (def) {
1345                                 GENL_SET_ERR_MSG(info,
1346                                                  "only one key can be default");
1347                                 goto error;
1348                         }
1349                         def = 1;
1350                         result->def = parse.idx;
1351                         if (!parse.def_uni || !parse.def_multi)
1352                                 goto error;
1353                 } else if (parse.defmgmt)
1354                         goto error;
1355                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1356                                                      parse.idx, false, NULL);
1357                 if (err)
1358                         goto error;
1359                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1360                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1361                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1362                         err = -EINVAL;
1363                         goto error;
1364                 }
1365                 result->params[parse.idx].cipher = parse.p.cipher;
1366                 result->params[parse.idx].key_len = parse.p.key_len;
1367                 result->params[parse.idx].key = result->data[parse.idx];
1368                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1369
1370                 /* must be WEP key if we got here */
1371                 if (no_ht)
1372                         *no_ht = true;
1373         }
1374
1375         if (result->def < 0) {
1376                 err = -EINVAL;
1377                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1378                 goto error;
1379         }
1380
1381         return result;
1382  error:
1383         kfree(result);
1384         return ERR_PTR(err);
1385 }
1386
1387 static int nl80211_key_allowed(struct wireless_dev *wdev)
1388 {
1389         ASSERT_WDEV_LOCK(wdev);
1390
1391         switch (wdev->iftype) {
1392         case NL80211_IFTYPE_AP:
1393         case NL80211_IFTYPE_AP_VLAN:
1394         case NL80211_IFTYPE_P2P_GO:
1395         case NL80211_IFTYPE_MESH_POINT:
1396                 break;
1397         case NL80211_IFTYPE_ADHOC:
1398         case NL80211_IFTYPE_STATION:
1399         case NL80211_IFTYPE_P2P_CLIENT:
1400                 if (!wdev->current_bss)
1401                         return -ENOLINK;
1402                 break;
1403         case NL80211_IFTYPE_UNSPECIFIED:
1404         case NL80211_IFTYPE_OCB:
1405         case NL80211_IFTYPE_MONITOR:
1406         case NL80211_IFTYPE_NAN:
1407         case NL80211_IFTYPE_P2P_DEVICE:
1408         case NL80211_IFTYPE_WDS:
1409         case NUM_NL80211_IFTYPES:
1410                 return -EINVAL;
1411         }
1412
1413         return 0;
1414 }
1415
1416 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1417                                                         u32 freq)
1418 {
1419         struct ieee80211_channel *chan;
1420
1421         chan = ieee80211_get_channel_khz(wiphy, freq);
1422         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1423                 return NULL;
1424         return chan;
1425 }
1426
1427 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1428 {
1429         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1430         int i;
1431
1432         if (!nl_modes)
1433                 goto nla_put_failure;
1434
1435         i = 0;
1436         while (ifmodes) {
1437                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1438                         goto nla_put_failure;
1439                 ifmodes >>= 1;
1440                 i++;
1441         }
1442
1443         nla_nest_end(msg, nl_modes);
1444         return 0;
1445
1446 nla_put_failure:
1447         return -ENOBUFS;
1448 }
1449
1450 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1451                                           struct sk_buff *msg,
1452                                           bool large)
1453 {
1454         struct nlattr *nl_combis;
1455         int i, j;
1456
1457         nl_combis = nla_nest_start_noflag(msg,
1458                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1459         if (!nl_combis)
1460                 goto nla_put_failure;
1461
1462         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1463                 const struct ieee80211_iface_combination *c;
1464                 struct nlattr *nl_combi, *nl_limits;
1465
1466                 c = &wiphy->iface_combinations[i];
1467
1468                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1469                 if (!nl_combi)
1470                         goto nla_put_failure;
1471
1472                 nl_limits = nla_nest_start_noflag(msg,
1473                                                   NL80211_IFACE_COMB_LIMITS);
1474                 if (!nl_limits)
1475                         goto nla_put_failure;
1476
1477                 for (j = 0; j < c->n_limits; j++) {
1478                         struct nlattr *nl_limit;
1479
1480                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1481                         if (!nl_limit)
1482                                 goto nla_put_failure;
1483                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1484                                         c->limits[j].max))
1485                                 goto nla_put_failure;
1486                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1487                                                 c->limits[j].types))
1488                                 goto nla_put_failure;
1489                         nla_nest_end(msg, nl_limit);
1490                 }
1491
1492                 nla_nest_end(msg, nl_limits);
1493
1494                 if (c->beacon_int_infra_match &&
1495                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1496                         goto nla_put_failure;
1497                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1498                                 c->num_different_channels) ||
1499                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1500                                 c->max_interfaces))
1501                         goto nla_put_failure;
1502                 if (large &&
1503                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1504                                 c->radar_detect_widths) ||
1505                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1506                                 c->radar_detect_regions)))
1507                         goto nla_put_failure;
1508                 if (c->beacon_int_min_gcd &&
1509                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1510                                 c->beacon_int_min_gcd))
1511                         goto nla_put_failure;
1512
1513                 nla_nest_end(msg, nl_combi);
1514         }
1515
1516         nla_nest_end(msg, nl_combis);
1517
1518         return 0;
1519 nla_put_failure:
1520         return -ENOBUFS;
1521 }
1522
1523 #ifdef CONFIG_PM
1524 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1525                                         struct sk_buff *msg)
1526 {
1527         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1528         struct nlattr *nl_tcp;
1529
1530         if (!tcp)
1531                 return 0;
1532
1533         nl_tcp = nla_nest_start_noflag(msg,
1534                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1535         if (!nl_tcp)
1536                 return -ENOBUFS;
1537
1538         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1539                         tcp->data_payload_max))
1540                 return -ENOBUFS;
1541
1542         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1543                         tcp->data_payload_max))
1544                 return -ENOBUFS;
1545
1546         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1547                 return -ENOBUFS;
1548
1549         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1550                                 sizeof(*tcp->tok), tcp->tok))
1551                 return -ENOBUFS;
1552
1553         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1554                         tcp->data_interval_max))
1555                 return -ENOBUFS;
1556
1557         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1558                         tcp->wake_payload_max))
1559                 return -ENOBUFS;
1560
1561         nla_nest_end(msg, nl_tcp);
1562         return 0;
1563 }
1564
1565 static int nl80211_send_wowlan(struct sk_buff *msg,
1566                                struct cfg80211_registered_device *rdev,
1567                                bool large)
1568 {
1569         struct nlattr *nl_wowlan;
1570
1571         if (!rdev->wiphy.wowlan)
1572                 return 0;
1573
1574         nl_wowlan = nla_nest_start_noflag(msg,
1575                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1576         if (!nl_wowlan)
1577                 return -ENOBUFS;
1578
1579         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1580              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1581             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1582              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1583             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1584              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1585             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1586              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1587             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1588              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1589             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1590              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1591             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1592              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1593             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1594              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1595                 return -ENOBUFS;
1596
1597         if (rdev->wiphy.wowlan->n_patterns) {
1598                 struct nl80211_pattern_support pat = {
1599                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1600                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1601                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1602                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1603                 };
1604
1605                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1606                             sizeof(pat), &pat))
1607                         return -ENOBUFS;
1608         }
1609
1610         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1611             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1612                         rdev->wiphy.wowlan->max_nd_match_sets))
1613                 return -ENOBUFS;
1614
1615         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1616                 return -ENOBUFS;
1617
1618         nla_nest_end(msg, nl_wowlan);
1619
1620         return 0;
1621 }
1622 #endif
1623
1624 static int nl80211_send_coalesce(struct sk_buff *msg,
1625                                  struct cfg80211_registered_device *rdev)
1626 {
1627         struct nl80211_coalesce_rule_support rule;
1628
1629         if (!rdev->wiphy.coalesce)
1630                 return 0;
1631
1632         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1633         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1634         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1635         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1636         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1637         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1638
1639         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1640                 return -ENOBUFS;
1641
1642         return 0;
1643 }
1644
1645 static int
1646 nl80211_send_iftype_data(struct sk_buff *msg,
1647                          const struct ieee80211_supported_band *sband,
1648                          const struct ieee80211_sband_iftype_data *iftdata)
1649 {
1650         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1651
1652         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1653                                 iftdata->types_mask))
1654                 return -ENOBUFS;
1655
1656         if (he_cap->has_he) {
1657                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1658                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1659                             he_cap->he_cap_elem.mac_cap_info) ||
1660                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1661                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1662                             he_cap->he_cap_elem.phy_cap_info) ||
1663                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1664                             sizeof(he_cap->he_mcs_nss_supp),
1665                             &he_cap->he_mcs_nss_supp) ||
1666                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1667                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1668                         return -ENOBUFS;
1669         }
1670
1671         if (sband->band == NL80211_BAND_6GHZ &&
1672             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1673                     sizeof(iftdata->he_6ghz_capa),
1674                     &iftdata->he_6ghz_capa))
1675                 return -ENOBUFS;
1676
1677         return 0;
1678 }
1679
1680 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1681                                       struct ieee80211_supported_band *sband,
1682                                       bool large)
1683 {
1684         struct nlattr *nl_rates, *nl_rate;
1685         struct ieee80211_rate *rate;
1686         int i;
1687
1688         /* add HT info */
1689         if (sband->ht_cap.ht_supported &&
1690             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1691                      sizeof(sband->ht_cap.mcs),
1692                      &sband->ht_cap.mcs) ||
1693              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1694                          sband->ht_cap.cap) ||
1695              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1696                         sband->ht_cap.ampdu_factor) ||
1697              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1698                         sband->ht_cap.ampdu_density)))
1699                 return -ENOBUFS;
1700
1701         /* add VHT info */
1702         if (sband->vht_cap.vht_supported &&
1703             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1704                      sizeof(sband->vht_cap.vht_mcs),
1705                      &sband->vht_cap.vht_mcs) ||
1706              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1707                          sband->vht_cap.cap)))
1708                 return -ENOBUFS;
1709
1710         if (large && sband->n_iftype_data) {
1711                 struct nlattr *nl_iftype_data =
1712                         nla_nest_start_noflag(msg,
1713                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1714                 int err;
1715
1716                 if (!nl_iftype_data)
1717                         return -ENOBUFS;
1718
1719                 for (i = 0; i < sband->n_iftype_data; i++) {
1720                         struct nlattr *iftdata;
1721
1722                         iftdata = nla_nest_start_noflag(msg, i + 1);
1723                         if (!iftdata)
1724                                 return -ENOBUFS;
1725
1726                         err = nl80211_send_iftype_data(msg, sband,
1727                                                        &sband->iftype_data[i]);
1728                         if (err)
1729                                 return err;
1730
1731                         nla_nest_end(msg, iftdata);
1732                 }
1733
1734                 nla_nest_end(msg, nl_iftype_data);
1735         }
1736
1737         /* add EDMG info */
1738         if (large && sband->edmg_cap.channels &&
1739             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1740                        sband->edmg_cap.channels) ||
1741             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1742                        sband->edmg_cap.bw_config)))
1743
1744                 return -ENOBUFS;
1745
1746         /* add bitrates */
1747         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1748         if (!nl_rates)
1749                 return -ENOBUFS;
1750
1751         for (i = 0; i < sband->n_bitrates; i++) {
1752                 nl_rate = nla_nest_start_noflag(msg, i);
1753                 if (!nl_rate)
1754                         return -ENOBUFS;
1755
1756                 rate = &sband->bitrates[i];
1757                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1758                                 rate->bitrate))
1759                         return -ENOBUFS;
1760                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1761                     nla_put_flag(msg,
1762                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1763                         return -ENOBUFS;
1764
1765                 nla_nest_end(msg, nl_rate);
1766         }
1767
1768         nla_nest_end(msg, nl_rates);
1769
1770         return 0;
1771 }
1772
1773 static int
1774 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1775                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1776 {
1777         u16 stypes;
1778         struct nlattr *nl_ftypes, *nl_ifs;
1779         enum nl80211_iftype ift;
1780         int i;
1781
1782         if (!mgmt_stypes)
1783                 return 0;
1784
1785         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1786         if (!nl_ifs)
1787                 return -ENOBUFS;
1788
1789         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1790                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1791                 if (!nl_ftypes)
1792                         return -ENOBUFS;
1793                 i = 0;
1794                 stypes = mgmt_stypes[ift].tx;
1795                 while (stypes) {
1796                         if ((stypes & 1) &&
1797                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1798                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1799                                 return -ENOBUFS;
1800                         stypes >>= 1;
1801                         i++;
1802                 }
1803                 nla_nest_end(msg, nl_ftypes);
1804         }
1805
1806         nla_nest_end(msg, nl_ifs);
1807
1808         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1809         if (!nl_ifs)
1810                 return -ENOBUFS;
1811
1812         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1813                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1814                 if (!nl_ftypes)
1815                         return -ENOBUFS;
1816                 i = 0;
1817                 stypes = mgmt_stypes[ift].rx;
1818                 while (stypes) {
1819                         if ((stypes & 1) &&
1820                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1821                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1822                                 return -ENOBUFS;
1823                         stypes >>= 1;
1824                         i++;
1825                 }
1826                 nla_nest_end(msg, nl_ftypes);
1827         }
1828         nla_nest_end(msg, nl_ifs);
1829
1830         return 0;
1831 }
1832
1833 #define CMD(op, n)                                                      \
1834          do {                                                           \
1835                 if (rdev->ops->op) {                                    \
1836                         i++;                                            \
1837                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1838                                 goto nla_put_failure;                   \
1839                 }                                                       \
1840         } while (0)
1841
1842 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1843                                         struct sk_buff *msg)
1844 {
1845         int i = 0;
1846
1847         /*
1848          * do *NOT* add anything into this function, new things need to be
1849          * advertised only to new versions of userspace that can deal with
1850          * the split (and they can't possibly care about new features...
1851          */
1852         CMD(add_virtual_intf, NEW_INTERFACE);
1853         CMD(change_virtual_intf, SET_INTERFACE);
1854         CMD(add_key, NEW_KEY);
1855         CMD(start_ap, START_AP);
1856         CMD(add_station, NEW_STATION);
1857         CMD(add_mpath, NEW_MPATH);
1858         CMD(update_mesh_config, SET_MESH_CONFIG);
1859         CMD(change_bss, SET_BSS);
1860         CMD(auth, AUTHENTICATE);
1861         CMD(assoc, ASSOCIATE);
1862         CMD(deauth, DEAUTHENTICATE);
1863         CMD(disassoc, DISASSOCIATE);
1864         CMD(join_ibss, JOIN_IBSS);
1865         CMD(join_mesh, JOIN_MESH);
1866         CMD(set_pmksa, SET_PMKSA);
1867         CMD(del_pmksa, DEL_PMKSA);
1868         CMD(flush_pmksa, FLUSH_PMKSA);
1869         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1870                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1871         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1872         CMD(mgmt_tx, FRAME);
1873         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1874         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1875                 i++;
1876                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1877                         goto nla_put_failure;
1878         }
1879         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1880             rdev->ops->join_mesh) {
1881                 i++;
1882                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1883                         goto nla_put_failure;
1884         }
1885         CMD(set_wds_peer, SET_WDS_PEER);
1886         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1887                 CMD(tdls_mgmt, TDLS_MGMT);
1888                 CMD(tdls_oper, TDLS_OPER);
1889         }
1890         if (rdev->wiphy.max_sched_scan_reqs)
1891                 CMD(sched_scan_start, START_SCHED_SCAN);
1892         CMD(probe_client, PROBE_CLIENT);
1893         CMD(set_noack_map, SET_NOACK_MAP);
1894         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1895                 i++;
1896                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1897                         goto nla_put_failure;
1898         }
1899         CMD(start_p2p_device, START_P2P_DEVICE);
1900         CMD(set_mcast_rate, SET_MCAST_RATE);
1901 #ifdef CONFIG_NL80211_TESTMODE
1902         CMD(testmode_cmd, TESTMODE);
1903 #endif
1904
1905         if (rdev->ops->connect || rdev->ops->auth) {
1906                 i++;
1907                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1908                         goto nla_put_failure;
1909         }
1910
1911         if (rdev->ops->disconnect || rdev->ops->deauth) {
1912                 i++;
1913                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1914                         goto nla_put_failure;
1915         }
1916
1917         return i;
1918  nla_put_failure:
1919         return -ENOBUFS;
1920 }
1921
1922 static int
1923 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1924                            struct sk_buff *msg)
1925 {
1926         struct nlattr *ftm;
1927
1928         if (!cap->ftm.supported)
1929                 return 0;
1930
1931         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1932         if (!ftm)
1933                 return -ENOBUFS;
1934
1935         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1936                 return -ENOBUFS;
1937         if (cap->ftm.non_asap &&
1938             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1939                 return -ENOBUFS;
1940         if (cap->ftm.request_lci &&
1941             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1942                 return -ENOBUFS;
1943         if (cap->ftm.request_civicloc &&
1944             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1945                 return -ENOBUFS;
1946         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1947                         cap->ftm.preambles))
1948                 return -ENOBUFS;
1949         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1950                         cap->ftm.bandwidths))
1951                 return -ENOBUFS;
1952         if (cap->ftm.max_bursts_exponent >= 0 &&
1953             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1954                         cap->ftm.max_bursts_exponent))
1955                 return -ENOBUFS;
1956         if (cap->ftm.max_ftms_per_burst &&
1957             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1958                         cap->ftm.max_ftms_per_burst))
1959                 return -ENOBUFS;
1960         if (cap->ftm.trigger_based &&
1961             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
1962                 return -ENOBUFS;
1963         if (cap->ftm.non_trigger_based &&
1964             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
1965                 return -ENOBUFS;
1966
1967         nla_nest_end(msg, ftm);
1968         return 0;
1969 }
1970
1971 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1972                                   struct sk_buff *msg)
1973 {
1974         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1975         struct nlattr *pmsr, *caps;
1976
1977         if (!cap)
1978                 return 0;
1979
1980         /*
1981          * we don't need to clean up anything here since the caller
1982          * will genlmsg_cancel() if we fail
1983          */
1984
1985         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1986         if (!pmsr)
1987                 return -ENOBUFS;
1988
1989         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1990                 return -ENOBUFS;
1991
1992         if (cap->report_ap_tsf &&
1993             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1994                 return -ENOBUFS;
1995
1996         if (cap->randomize_mac_addr &&
1997             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1998                 return -ENOBUFS;
1999
2000         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2001         if (!caps)
2002                 return -ENOBUFS;
2003
2004         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2005                 return -ENOBUFS;
2006
2007         nla_nest_end(msg, caps);
2008         nla_nest_end(msg, pmsr);
2009
2010         return 0;
2011 }
2012
2013 static int
2014 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2015                               struct sk_buff *msg)
2016 {
2017         int i;
2018         struct nlattr *nested, *nested_akms;
2019         const struct wiphy_iftype_akm_suites *iftype_akms;
2020
2021         if (!rdev->wiphy.num_iftype_akm_suites ||
2022             !rdev->wiphy.iftype_akm_suites)
2023                 return 0;
2024
2025         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2026         if (!nested)
2027                 return -ENOBUFS;
2028
2029         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2030                 nested_akms = nla_nest_start(msg, i + 1);
2031                 if (!nested_akms)
2032                         return -ENOBUFS;
2033
2034                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2035
2036                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2037                                         iftype_akms->iftypes_mask))
2038                         return -ENOBUFS;
2039
2040                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2041                             sizeof(u32) * iftype_akms->n_akm_suites,
2042                             iftype_akms->akm_suites)) {
2043                         return -ENOBUFS;
2044                 }
2045                 nla_nest_end(msg, nested_akms);
2046         }
2047
2048         nla_nest_end(msg, nested);
2049
2050         return 0;
2051 }
2052
2053 static int
2054 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2055                                struct sk_buff *msg)
2056 {
2057         struct nlattr *supp;
2058
2059         if (!rdev->wiphy.tid_config_support.vif &&
2060             !rdev->wiphy.tid_config_support.peer)
2061                 return 0;
2062
2063         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2064         if (!supp)
2065                 return -ENOSPC;
2066
2067         if (rdev->wiphy.tid_config_support.vif &&
2068             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2069                               rdev->wiphy.tid_config_support.vif,
2070                               NL80211_TID_CONFIG_ATTR_PAD))
2071                 goto fail;
2072
2073         if (rdev->wiphy.tid_config_support.peer &&
2074             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2075                               rdev->wiphy.tid_config_support.peer,
2076                               NL80211_TID_CONFIG_ATTR_PAD))
2077                 goto fail;
2078
2079         /* for now we just use the same value ... makes more sense */
2080         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2081                        rdev->wiphy.tid_config_support.max_retry))
2082                 goto fail;
2083         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2084                        rdev->wiphy.tid_config_support.max_retry))
2085                 goto fail;
2086
2087         nla_nest_end(msg, supp);
2088
2089         return 0;
2090 fail:
2091         nla_nest_cancel(msg, supp);
2092         return -ENOBUFS;
2093 }
2094
2095 struct nl80211_dump_wiphy_state {
2096         s64 filter_wiphy;
2097         long start;
2098         long split_start, band_start, chan_start, capa_start;
2099         bool split;
2100 };
2101
2102 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2103                               enum nl80211_commands cmd,
2104                               struct sk_buff *msg, u32 portid, u32 seq,
2105                               int flags, struct nl80211_dump_wiphy_state *state)
2106 {
2107         void *hdr;
2108         struct nlattr *nl_bands, *nl_band;
2109         struct nlattr *nl_freqs, *nl_freq;
2110         struct nlattr *nl_cmds;
2111         enum nl80211_band band;
2112         struct ieee80211_channel *chan;
2113         int i;
2114         const struct ieee80211_txrx_stypes *mgmt_stypes =
2115                                 rdev->wiphy.mgmt_stypes;
2116         u32 features;
2117
2118         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2119         if (!hdr)
2120                 return -ENOBUFS;
2121
2122         if (WARN_ON(!state))
2123                 return -EINVAL;
2124
2125         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2126             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2127                            wiphy_name(&rdev->wiphy)) ||
2128             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2129                         cfg80211_rdev_list_generation))
2130                 goto nla_put_failure;
2131
2132         if (cmd != NL80211_CMD_NEW_WIPHY)
2133                 goto finish;
2134
2135         switch (state->split_start) {
2136         case 0:
2137                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2138                                rdev->wiphy.retry_short) ||
2139                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2140                                rdev->wiphy.retry_long) ||
2141                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2142                                 rdev->wiphy.frag_threshold) ||
2143                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2144                                 rdev->wiphy.rts_threshold) ||
2145                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2146                                rdev->wiphy.coverage_class) ||
2147                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2148                                rdev->wiphy.max_scan_ssids) ||
2149                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2150                                rdev->wiphy.max_sched_scan_ssids) ||
2151                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2152                                 rdev->wiphy.max_scan_ie_len) ||
2153                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2154                                 rdev->wiphy.max_sched_scan_ie_len) ||
2155                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2156                                rdev->wiphy.max_match_sets))
2157                         goto nla_put_failure;
2158
2159                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2160                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2161                         goto nla_put_failure;
2162                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2163                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2164                         goto nla_put_failure;
2165                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2166                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2167                         goto nla_put_failure;
2168                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2169                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2170                         goto nla_put_failure;
2171                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2172                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2173                         goto nla_put_failure;
2174                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2175                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2176                         goto nla_put_failure;
2177                 state->split_start++;
2178                 if (state->split)
2179                         break;
2180                 fallthrough;
2181         case 1:
2182                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2183                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2184                             rdev->wiphy.cipher_suites))
2185                         goto nla_put_failure;
2186
2187                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2188                                rdev->wiphy.max_num_pmkids))
2189                         goto nla_put_failure;
2190
2191                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2192                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2193                         goto nla_put_failure;
2194
2195                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2196                                 rdev->wiphy.available_antennas_tx) ||
2197                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2198                                 rdev->wiphy.available_antennas_rx))
2199                         goto nla_put_failure;
2200
2201                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2202                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2203                                 rdev->wiphy.probe_resp_offload))
2204                         goto nla_put_failure;
2205
2206                 if ((rdev->wiphy.available_antennas_tx ||
2207                      rdev->wiphy.available_antennas_rx) &&
2208                     rdev->ops->get_antenna) {
2209                         u32 tx_ant = 0, rx_ant = 0;
2210                         int res;
2211
2212                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2213                         if (!res) {
2214                                 if (nla_put_u32(msg,
2215                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2216                                                 tx_ant) ||
2217                                     nla_put_u32(msg,
2218                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2219                                                 rx_ant))
2220                                         goto nla_put_failure;
2221                         }
2222                 }
2223
2224                 state->split_start++;
2225                 if (state->split)
2226                         break;
2227                 fallthrough;
2228         case 2:
2229                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2230                                         rdev->wiphy.interface_modes))
2231                                 goto nla_put_failure;
2232                 state->split_start++;
2233                 if (state->split)
2234                         break;
2235                 fallthrough;
2236         case 3:
2237                 nl_bands = nla_nest_start_noflag(msg,
2238                                                  NL80211_ATTR_WIPHY_BANDS);
2239                 if (!nl_bands)
2240                         goto nla_put_failure;
2241
2242                 for (band = state->band_start;
2243                      band < NUM_NL80211_BANDS; band++) {
2244                         struct ieee80211_supported_band *sband;
2245
2246                         /* omit higher bands for ancient software */
2247                         if (band > NL80211_BAND_5GHZ && !state->split)
2248                                 break;
2249
2250                         sband = rdev->wiphy.bands[band];
2251
2252                         if (!sband)
2253                                 continue;
2254
2255                         nl_band = nla_nest_start_noflag(msg, band);
2256                         if (!nl_band)
2257                                 goto nla_put_failure;
2258
2259                         switch (state->chan_start) {
2260                         case 0:
2261                                 if (nl80211_send_band_rateinfo(msg, sband,
2262                                                                state->split))
2263                                         goto nla_put_failure;
2264                                 state->chan_start++;
2265                                 if (state->split)
2266                                         break;
2267                                 fallthrough;
2268                         default:
2269                                 /* add frequencies */
2270                                 nl_freqs = nla_nest_start_noflag(msg,
2271                                                                  NL80211_BAND_ATTR_FREQS);
2272                                 if (!nl_freqs)
2273                                         goto nla_put_failure;
2274
2275                                 for (i = state->chan_start - 1;
2276                                      i < sband->n_channels;
2277                                      i++) {
2278                                         nl_freq = nla_nest_start_noflag(msg,
2279                                                                         i);
2280                                         if (!nl_freq)
2281                                                 goto nla_put_failure;
2282
2283                                         chan = &sband->channels[i];
2284
2285                                         if (nl80211_msg_put_channel(
2286                                                         msg, &rdev->wiphy, chan,
2287                                                         state->split))
2288                                                 goto nla_put_failure;
2289
2290                                         nla_nest_end(msg, nl_freq);
2291                                         if (state->split)
2292                                                 break;
2293                                 }
2294                                 if (i < sband->n_channels)
2295                                         state->chan_start = i + 2;
2296                                 else
2297                                         state->chan_start = 0;
2298                                 nla_nest_end(msg, nl_freqs);
2299                         }
2300
2301                         nla_nest_end(msg, nl_band);
2302
2303                         if (state->split) {
2304                                 /* start again here */
2305                                 if (state->chan_start)
2306                                         band--;
2307                                 break;
2308                         }
2309                 }
2310                 nla_nest_end(msg, nl_bands);
2311
2312                 if (band < NUM_NL80211_BANDS)
2313                         state->band_start = band + 1;
2314                 else
2315                         state->band_start = 0;
2316
2317                 /* if bands & channels are done, continue outside */
2318                 if (state->band_start == 0 && state->chan_start == 0)
2319                         state->split_start++;
2320                 if (state->split)
2321                         break;
2322                 fallthrough;
2323         case 4:
2324                 nl_cmds = nla_nest_start_noflag(msg,
2325                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2326                 if (!nl_cmds)
2327                         goto nla_put_failure;
2328
2329                 i = nl80211_add_commands_unsplit(rdev, msg);
2330                 if (i < 0)
2331                         goto nla_put_failure;
2332                 if (state->split) {
2333                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2334                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2335                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2336                                 CMD(channel_switch, CHANNEL_SWITCH);
2337                         CMD(set_qos_map, SET_QOS_MAP);
2338                         if (rdev->wiphy.features &
2339                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2340                                 CMD(add_tx_ts, ADD_TX_TS);
2341                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2342                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2343                         CMD(update_ft_ies, UPDATE_FT_IES);
2344                 }
2345 #undef CMD
2346
2347                 nla_nest_end(msg, nl_cmds);
2348                 state->split_start++;
2349                 if (state->split)
2350                         break;
2351                 fallthrough;
2352         case 5:
2353                 if (rdev->ops->remain_on_channel &&
2354                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2355                     nla_put_u32(msg,
2356                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2357                                 rdev->wiphy.max_remain_on_channel_duration))
2358                         goto nla_put_failure;
2359
2360                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2361                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2362                         goto nla_put_failure;
2363
2364                 state->split_start++;
2365                 if (state->split)
2366                         break;
2367                 fallthrough;
2368         case 6:
2369 #ifdef CONFIG_PM
2370                 if (nl80211_send_wowlan(msg, rdev, state->split))
2371                         goto nla_put_failure;
2372                 state->split_start++;
2373                 if (state->split)
2374                         break;
2375 #else
2376                 state->split_start++;
2377 #endif
2378                 fallthrough;
2379         case 7:
2380                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2381                                         rdev->wiphy.software_iftypes))
2382                         goto nla_put_failure;
2383
2384                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2385                                                    state->split))
2386                         goto nla_put_failure;
2387
2388                 state->split_start++;
2389                 if (state->split)
2390                         break;
2391                 fallthrough;
2392         case 8:
2393                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2394                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2395                                 rdev->wiphy.ap_sme_capa))
2396                         goto nla_put_failure;
2397
2398                 features = rdev->wiphy.features;
2399                 /*
2400                  * We can only add the per-channel limit information if the
2401                  * dump is split, otherwise it makes it too big. Therefore
2402                  * only advertise it in that case.
2403                  */
2404                 if (state->split)
2405                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2406                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2407                         goto nla_put_failure;
2408
2409                 if (rdev->wiphy.ht_capa_mod_mask &&
2410                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2411                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2412                             rdev->wiphy.ht_capa_mod_mask))
2413                         goto nla_put_failure;
2414
2415                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2416                     rdev->wiphy.max_acl_mac_addrs &&
2417                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2418                                 rdev->wiphy.max_acl_mac_addrs))
2419                         goto nla_put_failure;
2420
2421                 /*
2422                  * Any information below this point is only available to
2423                  * applications that can deal with it being split. This
2424                  * helps ensure that newly added capabilities don't break
2425                  * older tools by overrunning their buffers.
2426                  *
2427                  * We still increment split_start so that in the split
2428                  * case we'll continue with more data in the next round,
2429                  * but break unconditionally so unsplit data stops here.
2430                  */
2431                 if (state->split)
2432                         state->split_start++;
2433                 else
2434                         state->split_start = 0;
2435                 break;
2436         case 9:
2437                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2438                         goto nla_put_failure;
2439
2440                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2441                                 rdev->wiphy.max_sched_scan_plans) ||
2442                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2443                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2444                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2445                                 rdev->wiphy.max_sched_scan_plan_iterations))
2446                         goto nla_put_failure;
2447
2448                 if (rdev->wiphy.extended_capabilities &&
2449                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2450                              rdev->wiphy.extended_capabilities_len,
2451                              rdev->wiphy.extended_capabilities) ||
2452                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2453                              rdev->wiphy.extended_capabilities_len,
2454                              rdev->wiphy.extended_capabilities_mask)))
2455                         goto nla_put_failure;
2456
2457                 if (rdev->wiphy.vht_capa_mod_mask &&
2458                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2459                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2460                             rdev->wiphy.vht_capa_mod_mask))
2461                         goto nla_put_failure;
2462
2463                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2464                             rdev->wiphy.perm_addr))
2465                         goto nla_put_failure;
2466
2467                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2468                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2469                             rdev->wiphy.addr_mask))
2470                         goto nla_put_failure;
2471
2472                 if (rdev->wiphy.n_addresses > 1) {
2473                         void *attr;
2474
2475                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2476                         if (!attr)
2477                                 goto nla_put_failure;
2478
2479                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2480                                 if (nla_put(msg, i + 1, ETH_ALEN,
2481                                             rdev->wiphy.addresses[i].addr))
2482                                         goto nla_put_failure;
2483
2484                         nla_nest_end(msg, attr);
2485                 }
2486
2487                 state->split_start++;
2488                 break;
2489         case 10:
2490                 if (nl80211_send_coalesce(msg, rdev))
2491                         goto nla_put_failure;
2492
2493                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2494                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2495                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2496                         goto nla_put_failure;
2497
2498                 if (rdev->wiphy.max_ap_assoc_sta &&
2499                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2500                                 rdev->wiphy.max_ap_assoc_sta))
2501                         goto nla_put_failure;
2502
2503                 state->split_start++;
2504                 break;
2505         case 11:
2506                 if (rdev->wiphy.n_vendor_commands) {
2507                         const struct nl80211_vendor_cmd_info *info;
2508                         struct nlattr *nested;
2509
2510                         nested = nla_nest_start_noflag(msg,
2511                                                        NL80211_ATTR_VENDOR_DATA);
2512                         if (!nested)
2513                                 goto nla_put_failure;
2514
2515                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2516                                 info = &rdev->wiphy.vendor_commands[i].info;
2517                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2518                                         goto nla_put_failure;
2519                         }
2520                         nla_nest_end(msg, nested);
2521                 }
2522
2523                 if (rdev->wiphy.n_vendor_events) {
2524                         const struct nl80211_vendor_cmd_info *info;
2525                         struct nlattr *nested;
2526
2527                         nested = nla_nest_start_noflag(msg,
2528                                                        NL80211_ATTR_VENDOR_EVENTS);
2529                         if (!nested)
2530                                 goto nla_put_failure;
2531
2532                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2533                                 info = &rdev->wiphy.vendor_events[i];
2534                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2535                                         goto nla_put_failure;
2536                         }
2537                         nla_nest_end(msg, nested);
2538                 }
2539                 state->split_start++;
2540                 break;
2541         case 12:
2542                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2543                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2544                                rdev->wiphy.max_num_csa_counters))
2545                         goto nla_put_failure;
2546
2547                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2548                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2549                         goto nla_put_failure;
2550
2551                 if (rdev->wiphy.max_sched_scan_reqs &&
2552                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2553                                 rdev->wiphy.max_sched_scan_reqs))
2554                         goto nla_put_failure;
2555
2556                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2557                             sizeof(rdev->wiphy.ext_features),
2558                             rdev->wiphy.ext_features))
2559                         goto nla_put_failure;
2560
2561                 if (rdev->wiphy.bss_select_support) {
2562                         struct nlattr *nested;
2563                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2564
2565                         nested = nla_nest_start_noflag(msg,
2566                                                        NL80211_ATTR_BSS_SELECT);
2567                         if (!nested)
2568                                 goto nla_put_failure;
2569
2570                         i = 0;
2571                         while (bss_select_support) {
2572                                 if ((bss_select_support & 1) &&
2573                                     nla_put_flag(msg, i))
2574                                         goto nla_put_failure;
2575                                 i++;
2576                                 bss_select_support >>= 1;
2577                         }
2578                         nla_nest_end(msg, nested);
2579                 }
2580
2581                 state->split_start++;
2582                 break;
2583         case 13:
2584                 if (rdev->wiphy.num_iftype_ext_capab &&
2585                     rdev->wiphy.iftype_ext_capab) {
2586                         struct nlattr *nested_ext_capab, *nested;
2587
2588                         nested = nla_nest_start_noflag(msg,
2589                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2590                         if (!nested)
2591                                 goto nla_put_failure;
2592
2593                         for (i = state->capa_start;
2594                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2595                                 const struct wiphy_iftype_ext_capab *capab;
2596
2597                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2598
2599                                 nested_ext_capab = nla_nest_start_noflag(msg,
2600                                                                          i);
2601                                 if (!nested_ext_capab ||
2602                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2603                                                 capab->iftype) ||
2604                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2605                                             capab->extended_capabilities_len,
2606                                             capab->extended_capabilities) ||
2607                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2608                                             capab->extended_capabilities_len,
2609                                             capab->extended_capabilities_mask))
2610                                         goto nla_put_failure;
2611
2612                                 nla_nest_end(msg, nested_ext_capab);
2613                                 if (state->split)
2614                                         break;
2615                         }
2616                         nla_nest_end(msg, nested);
2617                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2618                                 state->capa_start = i + 1;
2619                                 break;
2620                         }
2621                 }
2622
2623                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2624                                 rdev->wiphy.nan_supported_bands))
2625                         goto nla_put_failure;
2626
2627                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2628                                             NL80211_EXT_FEATURE_TXQS)) {
2629                         struct cfg80211_txq_stats txqstats = {};
2630                         int res;
2631
2632                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2633                         if (!res &&
2634                             !nl80211_put_txq_stats(msg, &txqstats,
2635                                                    NL80211_ATTR_TXQ_STATS))
2636                                 goto nla_put_failure;
2637
2638                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2639                                         rdev->wiphy.txq_limit))
2640                                 goto nla_put_failure;
2641                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2642                                         rdev->wiphy.txq_memory_limit))
2643                                 goto nla_put_failure;
2644                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2645                                         rdev->wiphy.txq_quantum))
2646                                 goto nla_put_failure;
2647                 }
2648
2649                 state->split_start++;
2650                 break;
2651         case 14:
2652                 if (nl80211_send_pmsr_capa(rdev, msg))
2653                         goto nla_put_failure;
2654
2655                 state->split_start++;
2656                 break;
2657         case 15:
2658                 if (rdev->wiphy.akm_suites &&
2659                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2660                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2661                             rdev->wiphy.akm_suites))
2662                         goto nla_put_failure;
2663
2664                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2665                         goto nla_put_failure;
2666
2667                 if (nl80211_put_tid_config_support(rdev, msg))
2668                         goto nla_put_failure;
2669
2670                 /* done */
2671                 state->split_start = 0;
2672                 break;
2673         }
2674  finish:
2675         genlmsg_end(msg, hdr);
2676         return 0;
2677
2678  nla_put_failure:
2679         genlmsg_cancel(msg, hdr);
2680         return -EMSGSIZE;
2681 }
2682
2683 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2684                                     struct netlink_callback *cb,
2685                                     struct nl80211_dump_wiphy_state *state)
2686 {
2687         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2688         int ret;
2689
2690         if (!tb)
2691                 return -ENOMEM;
2692
2693         ret = nlmsg_parse_deprecated(cb->nlh,
2694                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2695                                      tb, nl80211_fam.maxattr,
2696                                      nl80211_policy, NULL);
2697         /* ignore parse errors for backward compatibility */
2698         if (ret) {
2699                 ret = 0;
2700                 goto out;
2701         }
2702
2703         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2704         if (tb[NL80211_ATTR_WIPHY])
2705                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2706         if (tb[NL80211_ATTR_WDEV])
2707                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2708         if (tb[NL80211_ATTR_IFINDEX]) {
2709                 struct net_device *netdev;
2710                 struct cfg80211_registered_device *rdev;
2711                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2712
2713                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2714                 if (!netdev) {
2715                         ret = -ENODEV;
2716                         goto out;
2717                 }
2718                 if (netdev->ieee80211_ptr) {
2719                         rdev = wiphy_to_rdev(
2720                                 netdev->ieee80211_ptr->wiphy);
2721                         state->filter_wiphy = rdev->wiphy_idx;
2722                 }
2723         }
2724
2725         ret = 0;
2726 out:
2727         kfree(tb);
2728         return ret;
2729 }
2730
2731 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2732 {
2733         int idx = 0, ret;
2734         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2735         struct cfg80211_registered_device *rdev;
2736
2737         rtnl_lock();
2738         if (!state) {
2739                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2740                 if (!state) {
2741                         rtnl_unlock();
2742                         return -ENOMEM;
2743                 }
2744                 state->filter_wiphy = -1;
2745                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2746                 if (ret) {
2747                         kfree(state);
2748                         rtnl_unlock();
2749                         return ret;
2750                 }
2751                 cb->args[0] = (long)state;
2752         }
2753
2754         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2755                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2756                         continue;
2757                 if (++idx <= state->start)
2758                         continue;
2759                 if (state->filter_wiphy != -1 &&
2760                     state->filter_wiphy != rdev->wiphy_idx)
2761                         continue;
2762                 /* attempt to fit multiple wiphy data chunks into the skb */
2763                 do {
2764                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2765                                                  skb,
2766                                                  NETLINK_CB(cb->skb).portid,
2767                                                  cb->nlh->nlmsg_seq,
2768                                                  NLM_F_MULTI, state);
2769                         if (ret < 0) {
2770                                 /*
2771                                  * If sending the wiphy data didn't fit (ENOBUFS
2772                                  * or EMSGSIZE returned), this SKB is still
2773                                  * empty (so it's not too big because another
2774                                  * wiphy dataset is already in the skb) and
2775                                  * we've not tried to adjust the dump allocation
2776                                  * yet ... then adjust the alloc size to be
2777                                  * bigger, and return 1 but with the empty skb.
2778                                  * This results in an empty message being RX'ed
2779                                  * in userspace, but that is ignored.
2780                                  *
2781                                  * We can then retry with the larger buffer.
2782                                  */
2783                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2784                                     !skb->len && !state->split &&
2785                                     cb->min_dump_alloc < 4096) {
2786                                         cb->min_dump_alloc = 4096;
2787                                         state->split_start = 0;
2788                                         rtnl_unlock();
2789                                         return 1;
2790                                 }
2791                                 idx--;
2792                                 break;
2793                         }
2794                 } while (state->split_start > 0);
2795                 break;
2796         }
2797         rtnl_unlock();
2798
2799         state->start = idx;
2800
2801         return skb->len;
2802 }
2803
2804 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2805 {
2806         kfree((void *)cb->args[0]);
2807         return 0;
2808 }
2809
2810 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2811 {
2812         struct sk_buff *msg;
2813         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2814         struct nl80211_dump_wiphy_state state = {};
2815
2816         msg = nlmsg_new(4096, GFP_KERNEL);
2817         if (!msg)
2818                 return -ENOMEM;
2819
2820         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2821                                info->snd_portid, info->snd_seq, 0,
2822                                &state) < 0) {
2823                 nlmsg_free(msg);
2824                 return -ENOBUFS;
2825         }
2826
2827         return genlmsg_reply(msg, info);
2828 }
2829
2830 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2831         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2832         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2833         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2834         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2835         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2836 };
2837
2838 static int parse_txq_params(struct nlattr *tb[],
2839                             struct ieee80211_txq_params *txq_params)
2840 {
2841         u8 ac;
2842
2843         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2844             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2845             !tb[NL80211_TXQ_ATTR_AIFS])
2846                 return -EINVAL;
2847
2848         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2849         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2850         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2851         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2852         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2853
2854         if (ac >= NL80211_NUM_ACS)
2855                 return -EINVAL;
2856         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2857         return 0;
2858 }
2859
2860 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2861 {
2862         /*
2863          * You can only set the channel explicitly for WDS interfaces,
2864          * all others have their channel managed via their respective
2865          * "establish a connection" command (connect, join, ...)
2866          *
2867          * For AP/GO and mesh mode, the channel can be set with the
2868          * channel userspace API, but is only stored and passed to the
2869          * low-level driver when the AP starts or the mesh is joined.
2870          * This is for backward compatibility, userspace can also give
2871          * the channel in the start-ap or join-mesh commands instead.
2872          *
2873          * Monitors are special as they are normally slaved to
2874          * whatever else is going on, so they have their own special
2875          * operation to set the monitor channel if possible.
2876          */
2877         return !wdev ||
2878                 wdev->iftype == NL80211_IFTYPE_AP ||
2879                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2880                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2881                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2882 }
2883
2884 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2885                           struct genl_info *info,
2886                           struct cfg80211_chan_def *chandef)
2887 {
2888         struct netlink_ext_ack *extack = info->extack;
2889         struct nlattr **attrs = info->attrs;
2890         u32 control_freq;
2891
2892         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2893                 return -EINVAL;
2894
2895         control_freq = MHZ_TO_KHZ(
2896                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
2897         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
2898                 control_freq +=
2899                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
2900
2901         memset(chandef, 0, sizeof(*chandef));
2902         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
2903         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2904         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
2905         chandef->freq1_offset = control_freq % 1000;
2906         chandef->center_freq2 = 0;
2907
2908         /* Primary channel not allowed */
2909         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2910                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2911                                     "Channel is disabled");
2912                 return -EINVAL;
2913         }
2914
2915         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2916                 enum nl80211_channel_type chantype;
2917
2918                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2919
2920                 switch (chantype) {
2921                 case NL80211_CHAN_NO_HT:
2922                 case NL80211_CHAN_HT20:
2923                 case NL80211_CHAN_HT40PLUS:
2924                 case NL80211_CHAN_HT40MINUS:
2925                         cfg80211_chandef_create(chandef, chandef->chan,
2926                                                 chantype);
2927                         /* user input for center_freq is incorrect */
2928                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2929                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2930                                 NL_SET_ERR_MSG_ATTR(extack,
2931                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2932                                                     "bad center frequency 1");
2933                                 return -EINVAL;
2934                         }
2935                         /* center_freq2 must be zero */
2936                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2937                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2938                                 NL_SET_ERR_MSG_ATTR(extack,
2939                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2940                                                     "center frequency 2 can't be used");
2941                                 return -EINVAL;
2942                         }
2943                         break;
2944                 default:
2945                         NL_SET_ERR_MSG_ATTR(extack,
2946                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2947                                             "invalid channel type");
2948                         return -EINVAL;
2949                 }
2950         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2951                 chandef->width =
2952                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2953                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
2954                         chandef->center_freq1 =
2955                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2956                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
2957                                 chandef->freq1_offset = nla_get_u32(
2958                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
2959                         else
2960                                 chandef->freq1_offset = 0;
2961                 }
2962                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2963                         chandef->center_freq2 =
2964                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2965         }
2966
2967         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2968                 chandef->edmg.channels =
2969                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2970
2971                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2972                         chandef->edmg.bw_config =
2973                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2974         } else {
2975                 chandef->edmg.bw_config = 0;
2976                 chandef->edmg.channels = 0;
2977         }
2978
2979         if (!cfg80211_chandef_valid(chandef)) {
2980                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2981                 return -EINVAL;
2982         }
2983
2984         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2985                                      IEEE80211_CHAN_DISABLED)) {
2986                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2987                 return -EINVAL;
2988         }
2989
2990         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2991              chandef->width == NL80211_CHAN_WIDTH_10) &&
2992             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2993                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2994                 return -EINVAL;
2995         }
2996
2997         return 0;
2998 }
2999
3000 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3001                                  struct net_device *dev,
3002                                  struct genl_info *info)
3003 {
3004         struct cfg80211_chan_def chandef;
3005         int result;
3006         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3007         struct wireless_dev *wdev = NULL;
3008
3009         if (dev)
3010                 wdev = dev->ieee80211_ptr;
3011         if (!nl80211_can_set_dev_channel(wdev))
3012                 return -EOPNOTSUPP;
3013         if (wdev)
3014                 iftype = wdev->iftype;
3015
3016         result = nl80211_parse_chandef(rdev, info, &chandef);
3017         if (result)
3018                 return result;
3019
3020         switch (iftype) {
3021         case NL80211_IFTYPE_AP:
3022         case NL80211_IFTYPE_P2P_GO:
3023                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3024                                                    iftype)) {
3025                         result = -EINVAL;
3026                         break;
3027                 }
3028                 if (wdev->beacon_interval) {
3029                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3030                             !(rdev->wiphy.features &
3031                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3032                                 result = -EBUSY;
3033                                 break;
3034                         }
3035
3036                         /* Only allow dynamic channel width changes */
3037                         if (chandef.chan != wdev->preset_chandef.chan) {
3038                                 result = -EBUSY;
3039                                 break;
3040                         }
3041                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3042                         if (result)
3043                                 break;
3044                 }
3045                 wdev->preset_chandef = chandef;
3046                 result = 0;
3047                 break;
3048         case NL80211_IFTYPE_MESH_POINT:
3049                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3050                 break;
3051         case NL80211_IFTYPE_MONITOR:
3052                 result = cfg80211_set_monitor_channel(rdev, &chandef);
3053                 break;
3054         default:
3055                 result = -EINVAL;
3056         }
3057
3058         return result;
3059 }
3060
3061 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3062 {
3063         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3064         struct net_device *netdev = info->user_ptr[1];
3065
3066         return __nl80211_set_channel(rdev, netdev, info);
3067 }
3068
3069 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
3070 {
3071         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3072         struct net_device *dev = info->user_ptr[1];
3073         struct wireless_dev *wdev = dev->ieee80211_ptr;
3074         const u8 *bssid;
3075
3076         if (!info->attrs[NL80211_ATTR_MAC])
3077                 return -EINVAL;
3078
3079         if (netif_running(dev))
3080                 return -EBUSY;
3081
3082         if (!rdev->ops->set_wds_peer)
3083                 return -EOPNOTSUPP;
3084
3085         if (wdev->iftype != NL80211_IFTYPE_WDS)
3086                 return -EOPNOTSUPP;
3087
3088         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
3089         return rdev_set_wds_peer(rdev, dev, bssid);
3090 }
3091
3092 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3093 {
3094         struct cfg80211_registered_device *rdev;
3095         struct net_device *netdev = NULL;
3096         struct wireless_dev *wdev;
3097         int result = 0, rem_txq_params = 0;
3098         struct nlattr *nl_txq_params;
3099         u32 changed;
3100         u8 retry_short = 0, retry_long = 0;
3101         u32 frag_threshold = 0, rts_threshold = 0;
3102         u8 coverage_class = 0;
3103         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3104
3105         ASSERT_RTNL();
3106
3107         /*
3108          * Try to find the wiphy and netdev. Normally this
3109          * function shouldn't need the netdev, but this is
3110          * done for backward compatibility -- previously
3111          * setting the channel was done per wiphy, but now
3112          * it is per netdev. Previous userland like hostapd
3113          * also passed a netdev to set_wiphy, so that it is
3114          * possible to let that go to the right netdev!
3115          */
3116
3117         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3118                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3119
3120                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3121                 if (netdev && netdev->ieee80211_ptr)
3122                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3123                 else
3124                         netdev = NULL;
3125         }
3126
3127         if (!netdev) {
3128                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3129                                                   info->attrs);
3130                 if (IS_ERR(rdev))
3131                         return PTR_ERR(rdev);
3132                 wdev = NULL;
3133                 netdev = NULL;
3134                 result = 0;
3135         } else
3136                 wdev = netdev->ieee80211_ptr;
3137
3138         /*
3139          * end workaround code, by now the rdev is available
3140          * and locked, and wdev may or may not be NULL.
3141          */
3142
3143         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3144                 result = cfg80211_dev_rename(
3145                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3146
3147         if (result)
3148                 return result;
3149
3150         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3151                 struct ieee80211_txq_params txq_params;
3152                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3153
3154                 if (!rdev->ops->set_txq_params)
3155                         return -EOPNOTSUPP;
3156
3157                 if (!netdev)
3158                         return -EINVAL;
3159
3160                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3161                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
3162                         return -EINVAL;
3163
3164                 if (!netif_running(netdev))
3165                         return -ENETDOWN;
3166
3167                 nla_for_each_nested(nl_txq_params,
3168                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3169                                     rem_txq_params) {
3170                         result = nla_parse_nested_deprecated(tb,
3171                                                              NL80211_TXQ_ATTR_MAX,
3172                                                              nl_txq_params,
3173                                                              txq_params_policy,
3174                                                              info->extack);
3175                         if (result)
3176                                 return result;
3177                         result = parse_txq_params(tb, &txq_params);
3178                         if (result)
3179                                 return result;
3180
3181                         result = rdev_set_txq_params(rdev, netdev,
3182                                                      &txq_params);
3183                         if (result)
3184                                 return result;
3185                 }
3186         }
3187
3188         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3189                 result = __nl80211_set_channel(
3190                         rdev,
3191                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3192                         info);
3193                 if (result)
3194                         return result;
3195         }
3196
3197         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3198                 struct wireless_dev *txp_wdev = wdev;
3199                 enum nl80211_tx_power_setting type;
3200                 int idx, mbm = 0;
3201
3202                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3203                         txp_wdev = NULL;
3204
3205                 if (!rdev->ops->set_tx_power)
3206                         return -EOPNOTSUPP;
3207
3208                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3209                 type = nla_get_u32(info->attrs[idx]);
3210
3211                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3212                     (type != NL80211_TX_POWER_AUTOMATIC))
3213                         return -EINVAL;
3214
3215                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3216                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3217                         mbm = nla_get_u32(info->attrs[idx]);
3218                 }
3219
3220                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3221                 if (result)
3222                         return result;
3223         }
3224
3225         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3226             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3227                 u32 tx_ant, rx_ant;
3228
3229                 if ((!rdev->wiphy.available_antennas_tx &&
3230                      !rdev->wiphy.available_antennas_rx) ||
3231                     !rdev->ops->set_antenna)
3232                         return -EOPNOTSUPP;
3233
3234                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3235                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3236
3237                 /* reject antenna configurations which don't match the
3238                  * available antenna masks, except for the "all" mask */
3239                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3240                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3241                         return -EINVAL;
3242
3243                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3244                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3245
3246                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3247                 if (result)
3248                         return result;
3249         }
3250
3251         changed = 0;
3252
3253         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3254                 retry_short = nla_get_u8(
3255                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3256
3257                 changed |= WIPHY_PARAM_RETRY_SHORT;
3258         }
3259
3260         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3261                 retry_long = nla_get_u8(
3262                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3263
3264                 changed |= WIPHY_PARAM_RETRY_LONG;
3265         }
3266
3267         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3268                 frag_threshold = nla_get_u32(
3269                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3270                 if (frag_threshold < 256)
3271                         return -EINVAL;
3272
3273                 if (frag_threshold != (u32) -1) {
3274                         /*
3275                          * Fragments (apart from the last one) are required to
3276                          * have even length. Make the fragmentation code
3277                          * simpler by stripping LSB should someone try to use
3278                          * odd threshold value.
3279                          */
3280                         frag_threshold &= ~0x1;
3281                 }
3282                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3283         }
3284
3285         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3286                 rts_threshold = nla_get_u32(
3287                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3288                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3289         }
3290
3291         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3292                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3293                         return -EINVAL;
3294
3295                 coverage_class = nla_get_u8(
3296                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3297                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3298         }
3299
3300         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3301                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3302                         return -EOPNOTSUPP;
3303
3304                 changed |= WIPHY_PARAM_DYN_ACK;
3305         }
3306
3307         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3308                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3309                                              NL80211_EXT_FEATURE_TXQS))
3310                         return -EOPNOTSUPP;
3311                 txq_limit = nla_get_u32(
3312                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3313                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3314         }
3315
3316         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3317                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3318                                              NL80211_EXT_FEATURE_TXQS))
3319                         return -EOPNOTSUPP;
3320                 txq_memory_limit = nla_get_u32(
3321                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3322                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3323         }
3324
3325         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3326                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3327                                              NL80211_EXT_FEATURE_TXQS))
3328                         return -EOPNOTSUPP;
3329                 txq_quantum = nla_get_u32(
3330                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3331                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3332         }
3333
3334         if (changed) {
3335                 u8 old_retry_short, old_retry_long;
3336                 u32 old_frag_threshold, old_rts_threshold;
3337                 u8 old_coverage_class;
3338                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3339
3340                 if (!rdev->ops->set_wiphy_params)
3341                         return -EOPNOTSUPP;
3342
3343                 old_retry_short = rdev->wiphy.retry_short;
3344                 old_retry_long = rdev->wiphy.retry_long;
3345                 old_frag_threshold = rdev->wiphy.frag_threshold;
3346                 old_rts_threshold = rdev->wiphy.rts_threshold;
3347                 old_coverage_class = rdev->wiphy.coverage_class;
3348                 old_txq_limit = rdev->wiphy.txq_limit;
3349                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3350                 old_txq_quantum = rdev->wiphy.txq_quantum;
3351
3352                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3353                         rdev->wiphy.retry_short = retry_short;
3354                 if (changed & WIPHY_PARAM_RETRY_LONG)
3355                         rdev->wiphy.retry_long = retry_long;
3356                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3357                         rdev->wiphy.frag_threshold = frag_threshold;
3358                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3359                         rdev->wiphy.rts_threshold = rts_threshold;
3360                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3361                         rdev->wiphy.coverage_class = coverage_class;
3362                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3363                         rdev->wiphy.txq_limit = txq_limit;
3364                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3365                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3366                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3367                         rdev->wiphy.txq_quantum = txq_quantum;
3368
3369                 result = rdev_set_wiphy_params(rdev, changed);
3370                 if (result) {
3371                         rdev->wiphy.retry_short = old_retry_short;
3372                         rdev->wiphy.retry_long = old_retry_long;
3373                         rdev->wiphy.frag_threshold = old_frag_threshold;
3374                         rdev->wiphy.rts_threshold = old_rts_threshold;
3375                         rdev->wiphy.coverage_class = old_coverage_class;
3376                         rdev->wiphy.txq_limit = old_txq_limit;
3377                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3378                         rdev->wiphy.txq_quantum = old_txq_quantum;
3379                         return result;
3380                 }
3381         }
3382         return 0;
3383 }
3384
3385 static int nl80211_send_chandef(struct sk_buff *msg,
3386                                 const struct cfg80211_chan_def *chandef)
3387 {
3388         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3389                 return -EINVAL;
3390
3391         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3392                         chandef->chan->center_freq))
3393                 return -ENOBUFS;
3394         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3395                         chandef->chan->freq_offset))
3396                 return -ENOBUFS;
3397         switch (chandef->width) {
3398         case NL80211_CHAN_WIDTH_20_NOHT:
3399         case NL80211_CHAN_WIDTH_20:
3400         case NL80211_CHAN_WIDTH_40:
3401                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3402                                 cfg80211_get_chandef_type(chandef)))
3403                         return -ENOBUFS;
3404                 break;
3405         default:
3406                 break;
3407         }
3408         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3409                 return -ENOBUFS;
3410         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3411                 return -ENOBUFS;
3412         if (chandef->center_freq2 &&
3413             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3414                 return -ENOBUFS;
3415         return 0;
3416 }
3417
3418 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3419                               struct cfg80211_registered_device *rdev,
3420                               struct wireless_dev *wdev,
3421                               enum nl80211_commands cmd)
3422 {
3423         struct net_device *dev = wdev->netdev;
3424         void *hdr;
3425
3426         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3427                 cmd != NL80211_CMD_DEL_INTERFACE &&
3428                 cmd != NL80211_CMD_SET_INTERFACE);
3429
3430         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3431         if (!hdr)
3432                 return -1;
3433
3434         if (dev &&
3435             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3436              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3437                 goto nla_put_failure;
3438
3439         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3440             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3441             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3442                               NL80211_ATTR_PAD) ||
3443             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3444             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3445                         rdev->devlist_generation ^
3446                         (cfg80211_rdev_list_generation << 2)) ||
3447             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3448                 goto nla_put_failure;
3449
3450         if (rdev->ops->get_channel) {
3451                 int ret;
3452                 struct cfg80211_chan_def chandef = {};
3453
3454                 ret = rdev_get_channel(rdev, wdev, &chandef);
3455                 if (ret == 0) {
3456                         if (nl80211_send_chandef(msg, &chandef))
3457                                 goto nla_put_failure;
3458                 }
3459         }
3460
3461         if (rdev->ops->get_tx_power) {
3462                 int dbm, ret;
3463
3464                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3465                 if (ret == 0 &&
3466                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3467                                 DBM_TO_MBM(dbm)))
3468                         goto nla_put_failure;
3469         }
3470
3471         wdev_lock(wdev);
3472         switch (wdev->iftype) {
3473         case NL80211_IFTYPE_AP:
3474                 if (wdev->ssid_len &&
3475                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3476                         goto nla_put_failure_locked;
3477                 break;
3478         case NL80211_IFTYPE_STATION:
3479         case NL80211_IFTYPE_P2P_CLIENT:
3480         case NL80211_IFTYPE_ADHOC: {
3481                 const u8 *ssid_ie;
3482                 if (!wdev->current_bss)
3483                         break;
3484                 rcu_read_lock();
3485                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3486                                                WLAN_EID_SSID);
3487                 if (ssid_ie &&
3488                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3489                         goto nla_put_failure_rcu_locked;
3490                 rcu_read_unlock();
3491                 break;
3492                 }
3493         default:
3494                 /* nothing */
3495                 break;
3496         }
3497         wdev_unlock(wdev);
3498
3499         if (rdev->ops->get_txq_stats) {
3500                 struct cfg80211_txq_stats txqstats = {};
3501                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3502
3503                 if (ret == 0 &&
3504                     !nl80211_put_txq_stats(msg, &txqstats,
3505                                            NL80211_ATTR_TXQ_STATS))
3506                         goto nla_put_failure;
3507         }
3508
3509         genlmsg_end(msg, hdr);
3510         return 0;
3511
3512  nla_put_failure_rcu_locked:
3513         rcu_read_unlock();
3514  nla_put_failure_locked:
3515         wdev_unlock(wdev);
3516  nla_put_failure:
3517         genlmsg_cancel(msg, hdr);
3518         return -EMSGSIZE;
3519 }
3520
3521 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3522 {
3523         int wp_idx = 0;
3524         int if_idx = 0;
3525         int wp_start = cb->args[0];
3526         int if_start = cb->args[1];
3527         int filter_wiphy = -1;
3528         struct cfg80211_registered_device *rdev;
3529         struct wireless_dev *wdev;
3530         int ret;
3531
3532         rtnl_lock();
3533         if (!cb->args[2]) {
3534                 struct nl80211_dump_wiphy_state state = {
3535                         .filter_wiphy = -1,
3536                 };
3537
3538                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3539                 if (ret)
3540                         goto out_unlock;
3541
3542                 filter_wiphy = state.filter_wiphy;
3543
3544                 /*
3545                  * if filtering, set cb->args[2] to +1 since 0 is the default
3546                  * value needed to determine that parsing is necessary.
3547                  */
3548                 if (filter_wiphy >= 0)
3549                         cb->args[2] = filter_wiphy + 1;
3550                 else
3551                         cb->args[2] = -1;
3552         } else if (cb->args[2] > 0) {
3553                 filter_wiphy = cb->args[2] - 1;
3554         }
3555
3556         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3557                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3558                         continue;
3559                 if (wp_idx < wp_start) {
3560                         wp_idx++;
3561                         continue;
3562                 }
3563
3564                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3565                         continue;
3566
3567                 if_idx = 0;
3568
3569                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3570                         if (if_idx < if_start) {
3571                                 if_idx++;
3572                                 continue;
3573                         }
3574                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3575                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3576                                                rdev, wdev,
3577                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3578                                 goto out;
3579                         }
3580                         if_idx++;
3581                 }
3582
3583                 wp_idx++;
3584         }
3585  out:
3586         cb->args[0] = wp_idx;
3587         cb->args[1] = if_idx;
3588
3589         ret = skb->len;
3590  out_unlock:
3591         rtnl_unlock();
3592
3593         return ret;
3594 }
3595
3596 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3597 {
3598         struct sk_buff *msg;
3599         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3600         struct wireless_dev *wdev = info->user_ptr[1];
3601
3602         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3603         if (!msg)
3604                 return -ENOMEM;
3605
3606         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3607                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3608                 nlmsg_free(msg);
3609                 return -ENOBUFS;
3610         }
3611
3612         return genlmsg_reply(msg, info);
3613 }
3614
3615 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3616         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3617         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3618         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3619         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3620         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3621         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3622 };
3623
3624 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3625 {
3626         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3627         int flag;
3628
3629         *mntrflags = 0;
3630
3631         if (!nla)
3632                 return -EINVAL;
3633
3634         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3635                 return -EINVAL;
3636
3637         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3638                 if (flags[flag])
3639                         *mntrflags |= (1<<flag);
3640
3641         *mntrflags |= MONITOR_FLAG_CHANGED;
3642
3643         return 0;
3644 }
3645
3646 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3647                                      enum nl80211_iftype type,
3648                                      struct genl_info *info,
3649                                      struct vif_params *params)
3650 {
3651         bool change = false;
3652         int err;
3653
3654         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3655                 if (type != NL80211_IFTYPE_MONITOR)
3656                         return -EINVAL;
3657
3658                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3659                                           &params->flags);
3660                 if (err)
3661                         return err;
3662
3663                 change = true;
3664         }
3665
3666         if (params->flags & MONITOR_FLAG_ACTIVE &&
3667             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3668                 return -EOPNOTSUPP;
3669
3670         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3671                 const u8 *mumimo_groups;
3672                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3673
3674                 if (type != NL80211_IFTYPE_MONITOR)
3675                         return -EINVAL;
3676
3677                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3678                         return -EOPNOTSUPP;
3679
3680                 mumimo_groups =
3681                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3682
3683                 /* bits 0 and 63 are reserved and must be zero */
3684                 if ((mumimo_groups[0] & BIT(0)) ||
3685                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3686                         return -EINVAL;
3687
3688                 params->vht_mumimo_groups = mumimo_groups;
3689                 change = true;
3690         }
3691
3692         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3693                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3694
3695                 if (type != NL80211_IFTYPE_MONITOR)
3696                         return -EINVAL;
3697
3698                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3699                         return -EOPNOTSUPP;
3700
3701                 params->vht_mumimo_follow_addr =
3702                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3703                 change = true;
3704         }
3705
3706         return change ? 1 : 0;
3707 }
3708
3709 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3710                                struct net_device *netdev, u8 use_4addr,
3711                                enum nl80211_iftype iftype)
3712 {
3713         if (!use_4addr) {
3714                 if (netdev && netif_is_bridge_port(netdev))
3715                         return -EBUSY;
3716                 return 0;
3717         }
3718
3719         switch (iftype) {
3720         case NL80211_IFTYPE_AP_VLAN:
3721                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3722                         return 0;
3723                 break;
3724         case NL80211_IFTYPE_STATION:
3725                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3726                         return 0;
3727                 break;
3728         default:
3729                 break;
3730         }
3731
3732         return -EOPNOTSUPP;
3733 }
3734
3735 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3736 {
3737         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3738         struct vif_params params;
3739         int err;
3740         enum nl80211_iftype otype, ntype;
3741         struct net_device *dev = info->user_ptr[1];
3742         bool change = false;
3743
3744         memset(&params, 0, sizeof(params));
3745
3746         otype = ntype = dev->ieee80211_ptr->iftype;
3747
3748         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3749                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3750                 if (otype != ntype)
3751                         change = true;
3752         }
3753
3754         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3755                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3756
3757                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3758                         return -EINVAL;
3759                 if (netif_running(dev))
3760                         return -EBUSY;
3761
3762                 wdev_lock(wdev);
3763                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3764                              IEEE80211_MAX_MESH_ID_LEN);
3765                 wdev->mesh_id_up_len =
3766                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3767                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3768                        wdev->mesh_id_up_len);
3769                 wdev_unlock(wdev);
3770         }
3771
3772         if (info->attrs[NL80211_ATTR_4ADDR]) {
3773                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3774                 change = true;
3775                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3776                 if (err)
3777                         return err;
3778         } else {
3779                 params.use_4addr = -1;
3780         }
3781
3782         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3783         if (err < 0)
3784                 return err;
3785         if (err > 0)
3786                 change = true;
3787
3788         if (change)
3789                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3790         else
3791                 err = 0;
3792
3793         if (!err && params.use_4addr != -1)
3794                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3795
3796         if (change && !err) {
3797                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3798
3799                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3800         }
3801
3802         return err;
3803 }
3804
3805 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3806 {
3807         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3808         struct vif_params params;
3809         struct wireless_dev *wdev;
3810         struct sk_buff *msg;
3811         int err;
3812         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3813
3814         /* to avoid failing a new interface creation due to pending removal */
3815         cfg80211_destroy_ifaces(rdev);
3816
3817         memset(&params, 0, sizeof(params));
3818
3819         if (!info->attrs[NL80211_ATTR_IFNAME])
3820                 return -EINVAL;
3821
3822         if (info->attrs[NL80211_ATTR_IFTYPE])
3823                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3824
3825         if (!rdev->ops->add_virtual_intf)
3826                 return -EOPNOTSUPP;
3827
3828         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3829              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3830             info->attrs[NL80211_ATTR_MAC]) {
3831                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3832                            ETH_ALEN);
3833                 if (!is_valid_ether_addr(params.macaddr))
3834                         return -EADDRNOTAVAIL;
3835         }
3836
3837         if (info->attrs[NL80211_ATTR_4ADDR]) {
3838                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3839                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3840                 if (err)
3841                         return err;
3842         }
3843
3844         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3845                 return -EOPNOTSUPP;
3846
3847         err = nl80211_parse_mon_options(rdev, type, info, &params);
3848         if (err < 0)
3849                 return err;
3850
3851         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3852         if (!msg)
3853                 return -ENOMEM;
3854
3855         wdev = rdev_add_virtual_intf(rdev,
3856                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3857                                 NET_NAME_USER, type, &params);
3858         if (WARN_ON(!wdev)) {
3859                 nlmsg_free(msg);
3860                 return -EPROTO;
3861         } else if (IS_ERR(wdev)) {
3862                 nlmsg_free(msg);
3863                 return PTR_ERR(wdev);
3864         }
3865
3866         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3867                 wdev->owner_nlportid = info->snd_portid;
3868
3869         switch (type) {
3870         case NL80211_IFTYPE_MESH_POINT:
3871                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3872                         break;
3873                 wdev_lock(wdev);
3874                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3875                              IEEE80211_MAX_MESH_ID_LEN);
3876                 wdev->mesh_id_up_len =
3877                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3878                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3879                        wdev->mesh_id_up_len);
3880                 wdev_unlock(wdev);
3881                 break;
3882         case NL80211_IFTYPE_NAN:
3883         case NL80211_IFTYPE_P2P_DEVICE:
3884                 /*
3885                  * P2P Device and NAN do not have a netdev, so don't go
3886                  * through the netdev notifier and must be added here
3887                  */
3888                 cfg80211_init_wdev(wdev);
3889                 cfg80211_register_wdev(rdev, wdev);
3890                 break;
3891         default:
3892                 break;
3893         }
3894
3895         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3896                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3897                 nlmsg_free(msg);
3898                 return -ENOBUFS;
3899         }
3900
3901         return genlmsg_reply(msg, info);
3902 }
3903
3904 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3905 {
3906         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3907         struct wireless_dev *wdev = info->user_ptr[1];
3908
3909         if (!rdev->ops->del_virtual_intf)
3910                 return -EOPNOTSUPP;
3911
3912         /*
3913          * If we remove a wireless device without a netdev then clear
3914          * user_ptr[1] so that nl80211_post_doit won't dereference it
3915          * to check if it needs to do dev_put(). Otherwise it crashes
3916          * since the wdev has been freed, unlike with a netdev where
3917          * we need the dev_put() for the netdev to really be freed.
3918          */
3919         if (!wdev->netdev)
3920                 info->user_ptr[1] = NULL;
3921
3922         return rdev_del_virtual_intf(rdev, wdev);
3923 }
3924
3925 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3926 {
3927         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3928         struct net_device *dev = info->user_ptr[1];
3929         u16 noack_map;
3930
3931         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3932                 return -EINVAL;
3933
3934         if (!rdev->ops->set_noack_map)
3935                 return -EOPNOTSUPP;
3936
3937         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3938
3939         return rdev_set_noack_map(rdev, dev, noack_map);
3940 }
3941
3942 struct get_key_cookie {
3943         struct sk_buff *msg;
3944         int error;
3945         int idx;
3946 };
3947
3948 static void get_key_callback(void *c, struct key_params *params)
3949 {
3950         struct nlattr *key;
3951         struct get_key_cookie *cookie = c;
3952
3953         if ((params->key &&
3954              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3955                      params->key_len, params->key)) ||
3956             (params->seq &&
3957              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3958                      params->seq_len, params->seq)) ||
3959             (params->cipher &&
3960              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3961                          params->cipher)))
3962                 goto nla_put_failure;
3963
3964         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3965         if (!key)
3966                 goto nla_put_failure;
3967
3968         if ((params->key &&
3969              nla_put(cookie->msg, NL80211_KEY_DATA,
3970                      params->key_len, params->key)) ||
3971             (params->seq &&
3972              nla_put(cookie->msg, NL80211_KEY_SEQ,
3973                      params->seq_len, params->seq)) ||
3974             (params->cipher &&
3975              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3976                          params->cipher)))
3977                 goto nla_put_failure;
3978
3979         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3980                 goto nla_put_failure;
3981
3982         nla_nest_end(cookie->msg, key);
3983
3984         return;
3985  nla_put_failure:
3986         cookie->error = 1;
3987 }
3988
3989 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3990 {
3991         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3992         int err;
3993         struct net_device *dev = info->user_ptr[1];
3994         u8 key_idx = 0;
3995         const u8 *mac_addr = NULL;
3996         bool pairwise;
3997         struct get_key_cookie cookie = {
3998                 .error = 0,
3999         };
4000         void *hdr;
4001         struct sk_buff *msg;
4002         bool bigtk_support = false;
4003
4004         if (wiphy_ext_feature_isset(&rdev->wiphy,
4005                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4006                 bigtk_support = true;
4007
4008         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4009              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4010             wiphy_ext_feature_isset(&rdev->wiphy,
4011                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4012                 bigtk_support = true;
4013
4014         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4015                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4016
4017                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4018                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4019                         return -EINVAL;
4020                 }
4021         }
4022
4023         if (info->attrs[NL80211_ATTR_MAC])
4024                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4025
4026         pairwise = !!mac_addr;
4027         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4028                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4029
4030                 if (kt != NL80211_KEYTYPE_GROUP &&
4031                     kt != NL80211_KEYTYPE_PAIRWISE)
4032                         return -EINVAL;
4033                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4034         }
4035
4036         if (!rdev->ops->get_key)
4037                 return -EOPNOTSUPP;
4038
4039         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4040                 return -ENOENT;
4041
4042         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4043         if (!msg)
4044                 return -ENOMEM;
4045
4046         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4047                              NL80211_CMD_NEW_KEY);
4048         if (!hdr)
4049                 goto nla_put_failure;
4050
4051         cookie.msg = msg;
4052         cookie.idx = key_idx;
4053
4054         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4055             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4056                 goto nla_put_failure;
4057         if (mac_addr &&
4058             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4059                 goto nla_put_failure;
4060
4061         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4062                            get_key_callback);
4063
4064         if (err)
4065                 goto free_msg;
4066
4067         if (cookie.error)
4068                 goto nla_put_failure;
4069
4070         genlmsg_end(msg, hdr);
4071         return genlmsg_reply(msg, info);
4072
4073  nla_put_failure:
4074         err = -ENOBUFS;
4075  free_msg:
4076         nlmsg_free(msg);
4077         return err;
4078 }
4079
4080 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4081 {
4082         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4083         struct key_parse key;
4084         int err;
4085         struct net_device *dev = info->user_ptr[1];
4086
4087         err = nl80211_parse_key(info, &key);
4088         if (err)
4089                 return err;
4090
4091         if (key.idx < 0)
4092                 return -EINVAL;
4093
4094         /* Only support setting default key and
4095          * Extended Key ID action NL80211_KEY_SET_TX.
4096          */
4097         if (!key.def && !key.defmgmt && !key.defbeacon &&
4098             !(key.p.mode == NL80211_KEY_SET_TX))
4099                 return -EINVAL;
4100
4101         wdev_lock(dev->ieee80211_ptr);
4102
4103         if (key.def) {
4104                 if (!rdev->ops->set_default_key) {
4105                         err = -EOPNOTSUPP;
4106                         goto out;
4107                 }
4108
4109                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4110                 if (err)
4111                         goto out;
4112
4113                 err = rdev_set_default_key(rdev, dev, key.idx,
4114                                                  key.def_uni, key.def_multi);
4115
4116                 if (err)
4117                         goto out;
4118
4119 #ifdef CONFIG_CFG80211_WEXT
4120                 dev->ieee80211_ptr->wext.default_key = key.idx;
4121 #endif
4122         } else if (key.defmgmt) {
4123                 if (key.def_uni || !key.def_multi) {
4124                         err = -EINVAL;
4125                         goto out;
4126                 }
4127
4128                 if (!rdev->ops->set_default_mgmt_key) {
4129                         err = -EOPNOTSUPP;
4130                         goto out;
4131                 }
4132
4133                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4134                 if (err)
4135                         goto out;
4136
4137                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4138                 if (err)
4139                         goto out;
4140
4141 #ifdef CONFIG_CFG80211_WEXT
4142                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4143 #endif
4144         } else if (key.defbeacon) {
4145                 if (key.def_uni || !key.def_multi) {
4146                         err = -EINVAL;
4147                         goto out;
4148                 }
4149
4150                 if (!rdev->ops->set_default_beacon_key) {
4151                         err = -EOPNOTSUPP;
4152                         goto out;
4153                 }
4154
4155                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4156                 if (err)
4157                         goto out;
4158
4159                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4160                 if (err)
4161                         goto out;
4162         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4163                    wiphy_ext_feature_isset(&rdev->wiphy,
4164                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4165                 u8 *mac_addr = NULL;
4166
4167                 if (info->attrs[NL80211_ATTR_MAC])
4168                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4169
4170                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4171                         err = -EINVAL;
4172                         goto out;
4173                 }
4174
4175                 err = rdev_add_key(rdev, dev, key.idx,
4176                                    NL80211_KEYTYPE_PAIRWISE,
4177                                    mac_addr, &key.p);
4178         } else {
4179                 err = -EINVAL;
4180         }
4181  out:
4182         wdev_unlock(dev->ieee80211_ptr);
4183
4184         return err;
4185 }
4186
4187 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4188 {
4189         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4190         int err;
4191         struct net_device *dev = info->user_ptr[1];
4192         struct key_parse key;
4193         const u8 *mac_addr = NULL;
4194
4195         err = nl80211_parse_key(info, &key);
4196         if (err)
4197                 return err;
4198
4199         if (!key.p.key) {
4200                 GENL_SET_ERR_MSG(info, "no key");
4201                 return -EINVAL;
4202         }
4203
4204         if (info->attrs[NL80211_ATTR_MAC])
4205                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4206
4207         if (key.type == -1) {
4208                 if (mac_addr)
4209                         key.type = NL80211_KEYTYPE_PAIRWISE;
4210                 else
4211                         key.type = NL80211_KEYTYPE_GROUP;
4212         }
4213
4214         /* for now */
4215         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4216             key.type != NL80211_KEYTYPE_GROUP) {
4217                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4218                 return -EINVAL;
4219         }
4220
4221         if (key.type == NL80211_KEYTYPE_GROUP &&
4222             info->attrs[NL80211_ATTR_VLAN_ID])
4223                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4224
4225         if (!rdev->ops->add_key)
4226                 return -EOPNOTSUPP;
4227
4228         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4229                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4230                                            mac_addr)) {
4231                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4232                 return -EINVAL;
4233         }
4234
4235         wdev_lock(dev->ieee80211_ptr);
4236         err = nl80211_key_allowed(dev->ieee80211_ptr);
4237         if (err)
4238                 GENL_SET_ERR_MSG(info, "key not allowed");
4239         if (!err) {
4240                 err = rdev_add_key(rdev, dev, key.idx,
4241                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4242                                     mac_addr, &key.p);
4243                 if (err)
4244                         GENL_SET_ERR_MSG(info, "key addition failed");
4245         }
4246         wdev_unlock(dev->ieee80211_ptr);
4247
4248         return err;
4249 }
4250
4251 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4252 {
4253         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4254         int err;
4255         struct net_device *dev = info->user_ptr[1];
4256         u8 *mac_addr = NULL;
4257         struct key_parse key;
4258
4259         err = nl80211_parse_key(info, &key);
4260         if (err)
4261                 return err;
4262
4263         if (key.idx < 0)
4264                 return -EINVAL;
4265
4266         if (info->attrs[NL80211_ATTR_MAC])
4267                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4268
4269         if (key.type == -1) {
4270                 if (mac_addr)
4271                         key.type = NL80211_KEYTYPE_PAIRWISE;
4272                 else
4273                         key.type = NL80211_KEYTYPE_GROUP;
4274         }
4275
4276         /* for now */
4277         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4278             key.type != NL80211_KEYTYPE_GROUP)
4279                 return -EINVAL;
4280
4281         if (!rdev->ops->del_key)
4282                 return -EOPNOTSUPP;
4283
4284         wdev_lock(dev->ieee80211_ptr);
4285         err = nl80211_key_allowed(dev->ieee80211_ptr);
4286
4287         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4288             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4289                 err = -ENOENT;
4290
4291         if (!err)
4292                 err = rdev_del_key(rdev, dev, key.idx,
4293                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4294                                    mac_addr);
4295
4296 #ifdef CONFIG_CFG80211_WEXT
4297         if (!err) {
4298                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4299                         dev->ieee80211_ptr->wext.default_key = -1;
4300                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4301                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4302         }
4303 #endif
4304         wdev_unlock(dev->ieee80211_ptr);
4305
4306         return err;
4307 }
4308
4309 /* This function returns an error or the number of nested attributes */
4310 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4311 {
4312         struct nlattr *attr;
4313         int n_entries = 0, tmp;
4314
4315         nla_for_each_nested(attr, nl_attr, tmp) {
4316                 if (nla_len(attr) != ETH_ALEN)
4317                         return -EINVAL;
4318
4319                 n_entries++;
4320         }
4321
4322         return n_entries;
4323 }
4324
4325 /*
4326  * This function parses ACL information and allocates memory for ACL data.
4327  * On successful return, the calling function is responsible to free the
4328  * ACL buffer returned by this function.
4329  */
4330 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4331                                                 struct genl_info *info)
4332 {
4333         enum nl80211_acl_policy acl_policy;
4334         struct nlattr *attr;
4335         struct cfg80211_acl_data *acl;
4336         int i = 0, n_entries, tmp;
4337
4338         if (!wiphy->max_acl_mac_addrs)
4339                 return ERR_PTR(-EOPNOTSUPP);
4340
4341         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4342                 return ERR_PTR(-EINVAL);
4343
4344         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4345         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4346             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4347                 return ERR_PTR(-EINVAL);
4348
4349         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4350                 return ERR_PTR(-EINVAL);
4351
4352         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4353         if (n_entries < 0)
4354                 return ERR_PTR(n_entries);
4355
4356         if (n_entries > wiphy->max_acl_mac_addrs)
4357                 return ERR_PTR(-ENOTSUPP);
4358
4359         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4360         if (!acl)
4361                 return ERR_PTR(-ENOMEM);
4362
4363         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4364                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4365                 i++;
4366         }
4367
4368         acl->n_acl_entries = n_entries;
4369         acl->acl_policy = acl_policy;
4370
4371         return acl;
4372 }
4373
4374 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4375 {
4376         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4377         struct net_device *dev = info->user_ptr[1];
4378         struct cfg80211_acl_data *acl;
4379         int err;
4380
4381         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4382             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4383                 return -EOPNOTSUPP;
4384
4385         if (!dev->ieee80211_ptr->beacon_interval)
4386                 return -EINVAL;
4387
4388         acl = parse_acl_data(&rdev->wiphy, info);
4389         if (IS_ERR(acl))
4390                 return PTR_ERR(acl);
4391
4392         err = rdev_set_mac_acl(rdev, dev, acl);
4393
4394         kfree(acl);
4395
4396         return err;
4397 }
4398
4399 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4400                            u8 *rates, u8 rates_len)
4401 {
4402         u8 i;
4403         u32 mask = 0;
4404
4405         for (i = 0; i < rates_len; i++) {
4406                 int rate = (rates[i] & 0x7f) * 5;
4407                 int ridx;
4408
4409                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4410                         struct ieee80211_rate *srate =
4411                                 &sband->bitrates[ridx];
4412                         if (rate == srate->bitrate) {
4413                                 mask |= 1 << ridx;
4414                                 break;
4415                         }
4416                 }
4417                 if (ridx == sband->n_bitrates)
4418                         return 0; /* rate not found */
4419         }
4420
4421         return mask;
4422 }
4423
4424 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4425                                u8 *rates, u8 rates_len,
4426                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4427 {
4428         u8 i;
4429
4430         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4431
4432         for (i = 0; i < rates_len; i++) {
4433                 int ridx, rbit;
4434
4435                 ridx = rates[i] / 8;
4436                 rbit = BIT(rates[i] % 8);
4437
4438                 /* check validity */
4439                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4440                         return false;
4441
4442                 /* check availability */
4443                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4444                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4445                         mcs[ridx] |= rbit;
4446                 else
4447                         return false;
4448         }
4449
4450         return true;
4451 }
4452
4453 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4454 {
4455         u16 mcs_mask = 0;
4456
4457         switch (vht_mcs_map) {
4458         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4459                 break;
4460         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4461                 mcs_mask = 0x00FF;
4462                 break;
4463         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4464                 mcs_mask = 0x01FF;
4465                 break;
4466         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4467                 mcs_mask = 0x03FF;
4468                 break;
4469         default:
4470                 break;
4471         }
4472
4473         return mcs_mask;
4474 }
4475
4476 static void vht_build_mcs_mask(u16 vht_mcs_map,
4477                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4478 {
4479         u8 nss;
4480
4481         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4482                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4483                 vht_mcs_map >>= 2;
4484         }
4485 }
4486
4487 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4488                              struct nl80211_txrate_vht *txrate,
4489                              u16 mcs[NL80211_VHT_NSS_MAX])
4490 {
4491         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4492         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4493         u8 i;
4494
4495         if (!sband->vht_cap.vht_supported)
4496                 return false;
4497
4498         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4499
4500         /* Build vht_mcs_mask from VHT capabilities */
4501         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4502
4503         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4504                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4505                         mcs[i] = txrate->mcs[i];
4506                 else
4507                         return false;
4508         }
4509
4510         return true;
4511 }
4512
4513 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4514 {
4515         switch (he_mcs_map) {
4516         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4517                 return 0;
4518         case IEEE80211_HE_MCS_SUPPORT_0_7:
4519                 return 0x00FF;
4520         case IEEE80211_HE_MCS_SUPPORT_0_9:
4521                 return 0x03FF;
4522         case IEEE80211_HE_MCS_SUPPORT_0_11:
4523                 return 0xFFF;
4524         default:
4525                 break;
4526         }
4527         return 0;
4528 }
4529
4530 static void he_build_mcs_mask(u16 he_mcs_map,
4531                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4532 {
4533         u8 nss;
4534
4535         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4536                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4537                 he_mcs_map >>= 2;
4538         }
4539 }
4540
4541 static u16 he_get_txmcsmap(struct genl_info *info,
4542                            const struct ieee80211_sta_he_cap *he_cap)
4543 {
4544         struct net_device *dev = info->user_ptr[1];
4545         struct wireless_dev *wdev = dev->ieee80211_ptr;
4546         __le16  tx_mcs;
4547
4548         switch (wdev->chandef.width) {
4549         case NL80211_CHAN_WIDTH_80P80:
4550                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4551                 break;
4552         case NL80211_CHAN_WIDTH_160:
4553                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4554                 break;
4555         default:
4556                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4557                 break;
4558         }
4559         return le16_to_cpu(tx_mcs);
4560 }
4561
4562 static bool he_set_mcs_mask(struct genl_info *info,
4563                             struct wireless_dev *wdev,
4564                             struct ieee80211_supported_band *sband,
4565                             struct nl80211_txrate_he *txrate,
4566                             u16 mcs[NL80211_HE_NSS_MAX])
4567 {
4568         const struct ieee80211_sta_he_cap *he_cap;
4569         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4570         u16 tx_mcs_map = 0;
4571         u8 i;
4572
4573         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4574         if (!he_cap)
4575                 return false;
4576
4577         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4578
4579         tx_mcs_map = he_get_txmcsmap(info, he_cap);
4580
4581         /* Build he_mcs_mask from HE capabilities */
4582         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4583
4584         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4585                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4586                         mcs[i] = txrate->mcs[i];
4587                 else
4588                         return false;
4589         }
4590
4591         return true;
4592 }
4593
4594 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4595                                          struct nlattr *attrs[],
4596                                          enum nl80211_attrs attr,
4597                                          struct cfg80211_bitrate_mask *mask,
4598                                          struct net_device *dev)
4599 {
4600         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4601         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4602         struct wireless_dev *wdev = dev->ieee80211_ptr;
4603         int rem, i;
4604         struct nlattr *tx_rates;
4605         struct ieee80211_supported_band *sband;
4606         u16 vht_tx_mcs_map, he_tx_mcs_map;
4607
4608         memset(mask, 0, sizeof(*mask));
4609         /* Default to all rates enabled */
4610         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4611                 const struct ieee80211_sta_he_cap *he_cap;
4612
4613                 sband = rdev->wiphy.bands[i];
4614
4615                 if (!sband)
4616                         continue;
4617
4618                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4619                 memcpy(mask->control[i].ht_mcs,
4620                        sband->ht_cap.mcs.rx_mask,
4621                        sizeof(mask->control[i].ht_mcs));
4622
4623                 if (!sband->vht_cap.vht_supported)
4624                         continue;
4625
4626                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4627                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4628
4629                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4630                 if (!he_cap)
4631                         continue;
4632
4633                 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4634                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4635
4636                 mask->control[i].he_gi = 0xFF;
4637                 mask->control[i].he_ltf = 0xFF;
4638         }
4639
4640         /* if no rates are given set it back to the defaults */
4641         if (!attrs[attr])
4642                 goto out;
4643
4644         /* The nested attribute uses enum nl80211_band as the index. This maps
4645          * directly to the enum nl80211_band values used in cfg80211.
4646          */
4647         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4648         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4649                 enum nl80211_band band = nla_type(tx_rates);
4650                 int err;
4651
4652                 if (band < 0 || band >= NUM_NL80211_BANDS)
4653                         return -EINVAL;
4654                 sband = rdev->wiphy.bands[band];
4655                 if (sband == NULL)
4656                         return -EINVAL;
4657                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4658                                                   tx_rates,
4659                                                   nl80211_txattr_policy,
4660                                                   info->extack);
4661                 if (err)
4662                         return err;
4663                 if (tb[NL80211_TXRATE_LEGACY]) {
4664                         mask->control[band].legacy = rateset_to_mask(
4665                                 sband,
4666                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4667                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4668                         if ((mask->control[band].legacy == 0) &&
4669                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4670                                 return -EINVAL;
4671                 }
4672                 if (tb[NL80211_TXRATE_HT]) {
4673                         if (!ht_rateset_to_mask(
4674                                         sband,
4675                                         nla_data(tb[NL80211_TXRATE_HT]),
4676                                         nla_len(tb[NL80211_TXRATE_HT]),
4677                                         mask->control[band].ht_mcs))
4678                                 return -EINVAL;
4679                 }
4680                 if (tb[NL80211_TXRATE_VHT]) {
4681                         if (!vht_set_mcs_mask(
4682                                         sband,
4683                                         nla_data(tb[NL80211_TXRATE_VHT]),
4684                                         mask->control[band].vht_mcs))
4685                                 return -EINVAL;
4686                 }
4687                 if (tb[NL80211_TXRATE_GI]) {
4688                         mask->control[band].gi =
4689                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4690                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4691                                 return -EINVAL;
4692                 }
4693                 if (tb[NL80211_TXRATE_HE] &&
4694                     !he_set_mcs_mask(info, wdev, sband,
4695                                      nla_data(tb[NL80211_TXRATE_HE]),
4696                                      mask->control[band].he_mcs))
4697                         return -EINVAL;
4698                 if (tb[NL80211_TXRATE_HE_GI])
4699                         mask->control[band].he_gi =
4700                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4701                 if (tb[NL80211_TXRATE_HE_LTF])
4702                         mask->control[band].he_ltf =
4703                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4704
4705                 if (mask->control[band].legacy == 0) {
4706                         /* don't allow empty legacy rates if HT, VHT or HE
4707                          * are not even supported.
4708                          */
4709                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4710                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4711                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4712                                 return -EINVAL;
4713
4714                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4715                                 if (mask->control[band].ht_mcs[i])
4716                                         goto out;
4717
4718                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4719                                 if (mask->control[band].vht_mcs[i])
4720                                         goto out;
4721
4722                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4723                                 if (mask->control[band].he_mcs[i])
4724                                         goto out;
4725
4726                         /* legacy and mcs rates may not be both empty */
4727                         return -EINVAL;
4728                 }
4729         }
4730
4731 out:
4732         return 0;
4733 }
4734
4735 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4736                                    enum nl80211_band band,
4737                                    struct cfg80211_bitrate_mask *beacon_rate)
4738 {
4739         u32 count_ht, count_vht, i;
4740         u32 rate = beacon_rate->control[band].legacy;
4741
4742         /* Allow only one rate */
4743         if (hweight32(rate) > 1)
4744                 return -EINVAL;
4745
4746         count_ht = 0;
4747         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4748                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4749                         return -EINVAL;
4750                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4751                         count_ht++;
4752                         if (count_ht > 1)
4753                                 return -EINVAL;
4754                 }
4755                 if (count_ht && rate)
4756                         return -EINVAL;
4757         }
4758
4759         count_vht = 0;
4760         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4761                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4762                         return -EINVAL;
4763                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4764                         count_vht++;
4765                         if (count_vht > 1)
4766                                 return -EINVAL;
4767                 }
4768                 if (count_vht && rate)
4769                         return -EINVAL;
4770         }
4771
4772         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4773                 return -EINVAL;
4774
4775         if (rate &&
4776             !wiphy_ext_feature_isset(&rdev->wiphy,
4777                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4778                 return -EINVAL;
4779         if (count_ht &&
4780             !wiphy_ext_feature_isset(&rdev->wiphy,
4781                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4782                 return -EINVAL;
4783         if (count_vht &&
4784             !wiphy_ext_feature_isset(&rdev->wiphy,
4785                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4786                 return -EINVAL;
4787
4788         return 0;
4789 }
4790
4791 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4792                                 struct nlattr *attrs[],
4793                                 struct cfg80211_beacon_data *bcn)
4794 {
4795         bool haveinfo = false;
4796         int err;
4797
4798         memset(bcn, 0, sizeof(*bcn));
4799
4800         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4801                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4802                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4803                 if (!bcn->head_len)
4804                         return -EINVAL;
4805                 haveinfo = true;
4806         }
4807
4808         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4809                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4810                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4811                 haveinfo = true;
4812         }
4813
4814         if (!haveinfo)
4815                 return -EINVAL;
4816
4817         if (attrs[NL80211_ATTR_IE]) {
4818                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4819                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4820         }
4821
4822         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4823                 bcn->proberesp_ies =
4824                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4825                 bcn->proberesp_ies_len =
4826                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4827         }
4828
4829         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4830                 bcn->assocresp_ies =
4831                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4832                 bcn->assocresp_ies_len =
4833                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4834         }
4835
4836         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4837                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4838                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4839         }
4840
4841         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4842                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4843
4844                 err = nla_parse_nested_deprecated(tb,
4845                                                   NL80211_FTM_RESP_ATTR_MAX,
4846                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4847                                                   NULL, NULL);
4848                 if (err)
4849                         return err;
4850
4851                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4852                     wiphy_ext_feature_isset(&rdev->wiphy,
4853                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4854                         bcn->ftm_responder = 1;
4855                 else
4856                         return -EOPNOTSUPP;
4857
4858                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4859                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4860                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4861                 }
4862
4863                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4864                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4865                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4866                 }
4867         } else {
4868                 bcn->ftm_responder = -1;
4869         }
4870
4871         return 0;
4872 }
4873
4874 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4875                                     struct ieee80211_he_obss_pd *he_obss_pd)
4876 {
4877         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4878         int err;
4879
4880         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4881                                he_obss_pd_policy, NULL);
4882         if (err)
4883                 return err;
4884
4885         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
4886                 return -EINVAL;
4887
4888         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
4889
4890         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
4891                 he_obss_pd->min_offset =
4892                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4893         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4894                 he_obss_pd->max_offset =
4895                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4896         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
4897                 he_obss_pd->non_srg_max_offset =
4898                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
4899
4900         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
4901                 return -EINVAL;
4902
4903         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
4904                 memcpy(he_obss_pd->bss_color_bitmap,
4905                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
4906                        sizeof(he_obss_pd->bss_color_bitmap));
4907
4908         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
4909                 memcpy(he_obss_pd->partial_bssid_bitmap,
4910                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
4911                        sizeof(he_obss_pd->partial_bssid_bitmap));
4912
4913         he_obss_pd->enable = true;
4914
4915         return 0;
4916 }
4917
4918 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
4919                                       struct cfg80211_he_bss_color *he_bss_color)
4920 {
4921         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
4922         int err;
4923
4924         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
4925                                he_bss_color_policy, NULL);
4926         if (err)
4927                 return err;
4928
4929         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
4930                 return -EINVAL;
4931
4932         he_bss_color->color =
4933                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
4934         he_bss_color->enabled =
4935                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
4936         he_bss_color->partial =
4937                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
4938
4939         return 0;
4940 }
4941
4942 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
4943                                         struct nlattr *attrs,
4944                                         struct cfg80211_ap_settings *params)
4945 {
4946         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
4947         int ret;
4948         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
4949
4950         if (!wiphy_ext_feature_isset(&rdev->wiphy,
4951                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
4952                 return -EINVAL;
4953
4954         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
4955                                NULL, NULL);
4956         if (ret)
4957                 return ret;
4958
4959         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
4960             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
4961             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
4962                 return -EINVAL;
4963
4964         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4965         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
4966         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
4967         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
4968
4969         return 0;
4970 }
4971
4972 static int
4973 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
4974                                      struct nlattr *attrs,
4975                                      struct cfg80211_ap_settings *params)
4976 {
4977         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
4978         int ret;
4979         struct cfg80211_unsol_bcast_probe_resp *presp =
4980                                         &params->unsol_bcast_probe_resp;
4981
4982         if (!wiphy_ext_feature_isset(&rdev->wiphy,
4983                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
4984                 return -EINVAL;
4985
4986         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
4987                                attrs, NULL, NULL);
4988         if (ret)
4989                 return ret;
4990
4991         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
4992             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
4993                 return -EINVAL;
4994
4995         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
4996         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
4997         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
4998         return 0;
4999 }
5000
5001 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5002                                             const u8 *rates)
5003 {
5004         int i;
5005
5006         if (!rates)
5007                 return;
5008
5009         for (i = 0; i < rates[1]; i++) {
5010                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5011                         params->ht_required = true;
5012                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5013                         params->vht_required = true;
5014                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5015                         params->he_required = true;
5016         }
5017 }
5018
5019 /*
5020  * Since the nl80211 API didn't include, from the beginning, attributes about
5021  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5022  * benefit of drivers that rebuild IEs in the firmware.
5023  */
5024 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5025 {
5026         const struct cfg80211_beacon_data *bcn = &params->beacon;
5027         size_t ies_len = bcn->tail_len;
5028         const u8 *ies = bcn->tail;
5029         const u8 *rates;
5030         const u8 *cap;
5031
5032         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5033         nl80211_check_ap_rate_selectors(params, rates);
5034
5035         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5036         nl80211_check_ap_rate_selectors(params, rates);
5037
5038         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5039         if (cap && cap[1] >= sizeof(*params->ht_cap))
5040                 params->ht_cap = (void *)(cap + 2);
5041         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5042         if (cap && cap[1] >= sizeof(*params->vht_cap))
5043                 params->vht_cap = (void *)(cap + 2);
5044         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5045         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5046                 params->he_cap = (void *)(cap + 3);
5047         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5048         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5049                 params->he_oper = (void *)(cap + 3);
5050 }
5051
5052 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5053                                    struct cfg80211_ap_settings *params)
5054 {
5055         struct wireless_dev *wdev;
5056         bool ret = false;
5057
5058         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5059                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5060                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5061                         continue;
5062
5063                 if (!wdev->preset_chandef.chan)
5064                         continue;
5065
5066                 params->chandef = wdev->preset_chandef;
5067                 ret = true;
5068                 break;
5069         }
5070
5071         return ret;
5072 }
5073
5074 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5075                                     enum nl80211_auth_type auth_type,
5076                                     enum nl80211_commands cmd)
5077 {
5078         if (auth_type > NL80211_AUTHTYPE_MAX)
5079                 return false;
5080
5081         switch (cmd) {
5082         case NL80211_CMD_AUTHENTICATE:
5083                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5084                     auth_type == NL80211_AUTHTYPE_SAE)
5085                         return false;
5086                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5087                                              NL80211_EXT_FEATURE_FILS_STA) &&
5088                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5089                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5090                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5091                         return false;
5092                 return true;
5093         case NL80211_CMD_CONNECT:
5094                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5095                     !wiphy_ext_feature_isset(&rdev->wiphy,
5096                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5097                     auth_type == NL80211_AUTHTYPE_SAE)
5098                         return false;
5099
5100                 /* FILS with SK PFS or PK not supported yet */
5101                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5102                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5103                         return false;
5104                 if (!wiphy_ext_feature_isset(
5105                             &rdev->wiphy,
5106                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5107                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5108                         return false;
5109                 return true;
5110         case NL80211_CMD_START_AP:
5111                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5112                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5113                     auth_type == NL80211_AUTHTYPE_SAE)
5114                         return false;
5115                 /* FILS not supported yet */
5116                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5117                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5118                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5119                         return false;
5120                 return true;
5121         default:
5122                 return false;
5123         }
5124 }
5125
5126 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5127 {
5128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5129         struct net_device *dev = info->user_ptr[1];
5130         struct wireless_dev *wdev = dev->ieee80211_ptr;
5131         struct cfg80211_ap_settings params;
5132         int err;
5133
5134         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5135             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5136                 return -EOPNOTSUPP;
5137
5138         if (!rdev->ops->start_ap)
5139                 return -EOPNOTSUPP;
5140
5141         if (wdev->beacon_interval)
5142                 return -EALREADY;
5143
5144         memset(&params, 0, sizeof(params));
5145
5146         /* these are required for START_AP */
5147         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5148             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5149             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5150                 return -EINVAL;
5151
5152         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
5153         if (err)
5154                 return err;
5155
5156         params.beacon_interval =
5157                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5158         params.dtim_period =
5159                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5160
5161         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5162                                            params.beacon_interval);
5163         if (err)
5164                 return err;
5165
5166         /*
5167          * In theory, some of these attributes should be required here
5168          * but since they were not used when the command was originally
5169          * added, keep them optional for old user space programs to let
5170          * them continue to work with drivers that do not need the
5171          * additional information -- drivers must check!
5172          */
5173         if (info->attrs[NL80211_ATTR_SSID]) {
5174                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5175                 params.ssid_len =
5176                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5177                 if (params.ssid_len == 0)
5178                         return -EINVAL;
5179         }
5180
5181         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5182                 params.hidden_ssid = nla_get_u32(
5183                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5184
5185         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5186
5187         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5188                 params.auth_type = nla_get_u32(
5189                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5190                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5191                                              NL80211_CMD_START_AP))
5192                         return -EINVAL;
5193         } else
5194                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5195
5196         err = nl80211_crypto_settings(rdev, info, &params.crypto,
5197                                       NL80211_MAX_NR_CIPHER_SUITES);
5198         if (err)
5199                 return err;
5200
5201         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5202                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5203                         return -EOPNOTSUPP;
5204                 params.inactivity_timeout = nla_get_u16(
5205                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5206         }
5207
5208         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5209                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5210                         return -EINVAL;
5211                 params.p2p_ctwindow =
5212                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5213                 if (params.p2p_ctwindow != 0 &&
5214                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5215                         return -EINVAL;
5216         }
5217
5218         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5219                 u8 tmp;
5220
5221                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5222                         return -EINVAL;
5223                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5224                 params.p2p_opp_ps = tmp;
5225                 if (params.p2p_opp_ps != 0 &&
5226                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5227                         return -EINVAL;
5228         }
5229
5230         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5231                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5232                 if (err)
5233                         return err;
5234         } else if (wdev->preset_chandef.chan) {
5235                 params.chandef = wdev->preset_chandef;
5236         } else if (!nl80211_get_ap_channel(rdev, &params))
5237                 return -EINVAL;
5238
5239         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
5240                                            wdev->iftype))
5241                 return -EINVAL;
5242
5243         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5244                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5245                                                     NL80211_ATTR_TX_RATES,
5246                                                     &params.beacon_rate,
5247                                                     dev);
5248                 if (err)
5249                         return err;
5250
5251                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5252                                               &params.beacon_rate);
5253                 if (err)
5254                         return err;
5255         }
5256
5257         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5258                 params.smps_mode =
5259                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5260                 switch (params.smps_mode) {
5261                 case NL80211_SMPS_OFF:
5262                         break;
5263                 case NL80211_SMPS_STATIC:
5264                         if (!(rdev->wiphy.features &
5265                               NL80211_FEATURE_STATIC_SMPS))
5266                                 return -EINVAL;
5267                         break;
5268                 case NL80211_SMPS_DYNAMIC:
5269                         if (!(rdev->wiphy.features &
5270                               NL80211_FEATURE_DYNAMIC_SMPS))
5271                                 return -EINVAL;
5272                         break;
5273                 default:
5274                         return -EINVAL;
5275                 }
5276         } else {
5277                 params.smps_mode = NL80211_SMPS_OFF;
5278         }
5279
5280         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5281         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5282                 return -EOPNOTSUPP;
5283
5284         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5285                 params.acl = parse_acl_data(&rdev->wiphy, info);
5286                 if (IS_ERR(params.acl))
5287                         return PTR_ERR(params.acl);
5288         }
5289
5290         params.twt_responder =
5291                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5292
5293         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5294                 err = nl80211_parse_he_obss_pd(
5295                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5296                                         &params.he_obss_pd);
5297                 if (err)
5298                         goto out;
5299         }
5300
5301         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5302                 err = nl80211_parse_he_bss_color(
5303                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5304                                         &params.he_bss_color);
5305                 if (err)
5306                         goto out;
5307         }
5308
5309         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5310                 err = nl80211_parse_fils_discovery(rdev,
5311                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5312                                                    &params);
5313                 if (err)
5314                         goto out;
5315         }
5316
5317         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5318                 err = nl80211_parse_unsol_bcast_probe_resp(
5319                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5320                         &params);
5321                 if (err)
5322                         return err;
5323         }
5324
5325         nl80211_calculate_ap_params(&params);
5326
5327         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5328                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5329
5330         wdev_lock(wdev);
5331         err = rdev_start_ap(rdev, dev, &params);
5332         if (!err) {
5333                 wdev->preset_chandef = params.chandef;
5334                 wdev->beacon_interval = params.beacon_interval;
5335                 wdev->chandef = params.chandef;
5336                 wdev->ssid_len = params.ssid_len;
5337                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5338
5339                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5340                         wdev->conn_owner_nlportid = info->snd_portid;
5341         }
5342         wdev_unlock(wdev);
5343
5344 out:
5345         kfree(params.acl);
5346
5347         return err;
5348 }
5349
5350 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5351 {
5352         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5353         struct net_device *dev = info->user_ptr[1];
5354         struct wireless_dev *wdev = dev->ieee80211_ptr;
5355         struct cfg80211_beacon_data params;
5356         int err;
5357
5358         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5359             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5360                 return -EOPNOTSUPP;
5361
5362         if (!rdev->ops->change_beacon)
5363                 return -EOPNOTSUPP;
5364
5365         if (!wdev->beacon_interval)
5366                 return -EINVAL;
5367
5368         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5369         if (err)
5370                 return err;
5371
5372         wdev_lock(wdev);
5373         err = rdev_change_beacon(rdev, dev, &params);
5374         wdev_unlock(wdev);
5375
5376         return err;
5377 }
5378
5379 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5380 {
5381         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5382         struct net_device *dev = info->user_ptr[1];
5383
5384         return cfg80211_stop_ap(rdev, dev, false);
5385 }
5386
5387 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5388         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5389         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5390         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5391         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5392         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5393         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5394 };
5395
5396 static int parse_station_flags(struct genl_info *info,
5397                                enum nl80211_iftype iftype,
5398                                struct station_parameters *params)
5399 {
5400         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5401         struct nlattr *nla;
5402         int flag;
5403
5404         /*
5405          * Try parsing the new attribute first so userspace
5406          * can specify both for older kernels.
5407          */
5408         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5409         if (nla) {
5410                 struct nl80211_sta_flag_update *sta_flags;
5411
5412                 sta_flags = nla_data(nla);
5413                 params->sta_flags_mask = sta_flags->mask;
5414                 params->sta_flags_set = sta_flags->set;
5415                 params->sta_flags_set &= params->sta_flags_mask;
5416                 if ((params->sta_flags_mask |
5417                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5418                         return -EINVAL;
5419                 return 0;
5420         }
5421
5422         /* if present, parse the old attribute */
5423
5424         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5425         if (!nla)
5426                 return 0;
5427
5428         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5429                 return -EINVAL;
5430
5431         /*
5432          * Only allow certain flags for interface types so that
5433          * other attributes are silently ignored. Remember that
5434          * this is backward compatibility code with old userspace
5435          * and shouldn't be hit in other cases anyway.
5436          */
5437         switch (iftype) {
5438         case NL80211_IFTYPE_AP:
5439         case NL80211_IFTYPE_AP_VLAN:
5440         case NL80211_IFTYPE_P2P_GO:
5441                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5442                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5443                                          BIT(NL80211_STA_FLAG_WME) |
5444                                          BIT(NL80211_STA_FLAG_MFP);
5445                 break;
5446         case NL80211_IFTYPE_P2P_CLIENT:
5447         case NL80211_IFTYPE_STATION:
5448                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5449                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5450                 break;
5451         case NL80211_IFTYPE_MESH_POINT:
5452                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5453                                          BIT(NL80211_STA_FLAG_MFP) |
5454                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5455                 break;
5456         default:
5457                 return -EINVAL;
5458         }
5459
5460         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5461                 if (flags[flag]) {
5462                         params->sta_flags_set |= (1<<flag);
5463
5464                         /* no longer support new API additions in old API */
5465                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5466                                 return -EINVAL;
5467                 }
5468         }
5469
5470         return 0;
5471 }
5472
5473 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5474 {
5475         struct nlattr *rate;
5476         u32 bitrate;
5477         u16 bitrate_compat;
5478         enum nl80211_rate_info rate_flg;
5479
5480         rate = nla_nest_start_noflag(msg, attr);
5481         if (!rate)
5482                 return false;
5483
5484         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5485         bitrate = cfg80211_calculate_bitrate(info);
5486         /* report 16-bit bitrate only if we can */
5487         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5488         if (bitrate > 0 &&
5489             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5490                 return false;
5491         if (bitrate_compat > 0 &&
5492             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5493                 return false;
5494
5495         switch (info->bw) {
5496         case RATE_INFO_BW_5:
5497                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5498                 break;
5499         case RATE_INFO_BW_10:
5500                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5501                 break;
5502         default:
5503                 WARN_ON(1);
5504                 fallthrough;
5505         case RATE_INFO_BW_20:
5506                 rate_flg = 0;
5507                 break;
5508         case RATE_INFO_BW_40:
5509                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5510                 break;
5511         case RATE_INFO_BW_80:
5512                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5513                 break;
5514         case RATE_INFO_BW_160:
5515                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5516                 break;
5517         case RATE_INFO_BW_HE_RU:
5518                 rate_flg = 0;
5519                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5520         }
5521
5522         if (rate_flg && nla_put_flag(msg, rate_flg))
5523                 return false;
5524
5525         if (info->flags & RATE_INFO_FLAGS_MCS) {
5526                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5527                         return false;
5528                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5529                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5530                         return false;
5531         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5532                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5533                         return false;
5534                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5535                         return false;
5536                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5537                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5538                         return false;
5539         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5540                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5541                         return false;
5542                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5543                         return false;
5544                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5545                         return false;
5546                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5547                         return false;
5548                 if (info->bw == RATE_INFO_BW_HE_RU &&
5549                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5550                                info->he_ru_alloc))
5551                         return false;
5552         }
5553
5554         nla_nest_end(msg, rate);
5555         return true;
5556 }
5557
5558 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5559                                int id)
5560 {
5561         void *attr;
5562         int i = 0;
5563
5564         if (!mask)
5565                 return true;
5566
5567         attr = nla_nest_start_noflag(msg, id);
5568         if (!attr)
5569                 return false;
5570
5571         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5572                 if (!(mask & BIT(i)))
5573                         continue;
5574
5575                 if (nla_put_u8(msg, i, signal[i]))
5576                         return false;
5577         }
5578
5579         nla_nest_end(msg, attr);
5580
5581         return true;
5582 }
5583
5584 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5585                                 u32 seq, int flags,
5586                                 struct cfg80211_registered_device *rdev,
5587                                 struct net_device *dev,
5588                                 const u8 *mac_addr, struct station_info *sinfo)
5589 {
5590         void *hdr;
5591         struct nlattr *sinfoattr, *bss_param;
5592
5593         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5594         if (!hdr) {
5595                 cfg80211_sinfo_release_content(sinfo);
5596                 return -1;
5597         }
5598
5599         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5600             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5601             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5602                 goto nla_put_failure;
5603
5604         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5605         if (!sinfoattr)
5606                 goto nla_put_failure;
5607
5608 #define PUT_SINFO(attr, memb, type) do {                                \
5609         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5610         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5611             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5612                              sinfo->memb))                              \
5613                 goto nla_put_failure;                                   \
5614         } while (0)
5615 #define PUT_SINFO_U64(attr, memb) do {                                  \
5616         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5617             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5618                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5619                 goto nla_put_failure;                                   \
5620         } while (0)
5621
5622         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5623         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5624         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5625
5626         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5627                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5628             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5629                         (u32)sinfo->rx_bytes))
5630                 goto nla_put_failure;
5631
5632         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5633                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5634             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5635                         (u32)sinfo->tx_bytes))
5636                 goto nla_put_failure;
5637
5638         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5639         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5640         PUT_SINFO(LLID, llid, u16);
5641         PUT_SINFO(PLID, plid, u16);
5642         PUT_SINFO(PLINK_STATE, plink_state, u8);
5643         PUT_SINFO_U64(RX_DURATION, rx_duration);
5644         PUT_SINFO_U64(TX_DURATION, tx_duration);
5645
5646         if (wiphy_ext_feature_isset(&rdev->wiphy,
5647                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5648                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5649
5650         switch (rdev->wiphy.signal_type) {
5651         case CFG80211_SIGNAL_TYPE_MBM:
5652                 PUT_SINFO(SIGNAL, signal, u8);
5653                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5654                 break;
5655         default:
5656                 break;
5657         }
5658         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5659                 if (!nl80211_put_signal(msg, sinfo->chains,
5660                                         sinfo->chain_signal,
5661                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5662                         goto nla_put_failure;
5663         }
5664         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5665                 if (!nl80211_put_signal(msg, sinfo->chains,
5666                                         sinfo->chain_signal_avg,
5667                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5668                         goto nla_put_failure;
5669         }
5670         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5671                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5672                                           NL80211_STA_INFO_TX_BITRATE))
5673                         goto nla_put_failure;
5674         }
5675         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5676                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5677                                           NL80211_STA_INFO_RX_BITRATE))
5678                         goto nla_put_failure;
5679         }
5680
5681         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5682         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5683         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5684         PUT_SINFO(TX_FAILED, tx_failed, u32);
5685         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5686         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5687         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5688         PUT_SINFO(LOCAL_PM, local_pm, u32);
5689         PUT_SINFO(PEER_PM, peer_pm, u32);
5690         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5691         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5692         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5693
5694         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5695                 bss_param = nla_nest_start_noflag(msg,
5696                                                   NL80211_STA_INFO_BSS_PARAM);
5697                 if (!bss_param)
5698                         goto nla_put_failure;
5699
5700                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5701                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5702                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5703                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5704                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5705                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5706                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5707                                sinfo->bss_param.dtim_period) ||
5708                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5709                                 sinfo->bss_param.beacon_interval))
5710                         goto nla_put_failure;
5711
5712                 nla_nest_end(msg, bss_param);
5713         }
5714         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5715             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5716                     sizeof(struct nl80211_sta_flag_update),
5717                     &sinfo->sta_flags))
5718                 goto nla_put_failure;
5719
5720         PUT_SINFO_U64(T_OFFSET, t_offset);
5721         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5722         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5723         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5724         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5725         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5726         if (wiphy_ext_feature_isset(&rdev->wiphy,
5727                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5728                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5729                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5730         }
5731
5732 #undef PUT_SINFO
5733 #undef PUT_SINFO_U64
5734
5735         if (sinfo->pertid) {
5736                 struct nlattr *tidsattr;
5737                 int tid;
5738
5739                 tidsattr = nla_nest_start_noflag(msg,
5740                                                  NL80211_STA_INFO_TID_STATS);
5741                 if (!tidsattr)
5742                         goto nla_put_failure;
5743
5744                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5745                         struct cfg80211_tid_stats *tidstats;
5746                         struct nlattr *tidattr;
5747
5748                         tidstats = &sinfo->pertid[tid];
5749
5750                         if (!tidstats->filled)
5751                                 continue;
5752
5753                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5754                         if (!tidattr)
5755                                 goto nla_put_failure;
5756
5757 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5758         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5759             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5760                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5761                 goto nla_put_failure;                                   \
5762         } while (0)
5763
5764                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5765                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5766                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5767                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5768
5769 #undef PUT_TIDVAL_U64
5770                         if ((tidstats->filled &
5771                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5772                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5773                                                    NL80211_TID_STATS_TXQ_STATS))
5774                                 goto nla_put_failure;
5775
5776                         nla_nest_end(msg, tidattr);
5777                 }
5778
5779                 nla_nest_end(msg, tidsattr);
5780         }
5781
5782         nla_nest_end(msg, sinfoattr);
5783
5784         if (sinfo->assoc_req_ies_len &&
5785             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5786                     sinfo->assoc_req_ies))
5787                 goto nla_put_failure;
5788
5789         cfg80211_sinfo_release_content(sinfo);
5790         genlmsg_end(msg, hdr);
5791         return 0;
5792
5793  nla_put_failure:
5794         cfg80211_sinfo_release_content(sinfo);
5795         genlmsg_cancel(msg, hdr);
5796         return -EMSGSIZE;
5797 }
5798
5799 static int nl80211_dump_station(struct sk_buff *skb,
5800                                 struct netlink_callback *cb)
5801 {
5802         struct station_info sinfo;
5803         struct cfg80211_registered_device *rdev;
5804         struct wireless_dev *wdev;
5805         u8 mac_addr[ETH_ALEN];
5806         int sta_idx = cb->args[2];
5807         int err;
5808
5809         rtnl_lock();
5810         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5811         if (err)
5812                 goto out_err;
5813
5814         if (!wdev->netdev) {
5815                 err = -EINVAL;
5816                 goto out_err;
5817         }
5818
5819         if (!rdev->ops->dump_station) {
5820                 err = -EOPNOTSUPP;
5821                 goto out_err;
5822         }
5823
5824         while (1) {
5825                 memset(&sinfo, 0, sizeof(sinfo));
5826                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5827                                         mac_addr, &sinfo);
5828                 if (err == -ENOENT)
5829                         break;
5830                 if (err)
5831                         goto out_err;
5832
5833                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5834                                 NETLINK_CB(cb->skb).portid,
5835                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5836                                 rdev, wdev->netdev, mac_addr,
5837                                 &sinfo) < 0)
5838                         goto out;
5839
5840                 sta_idx++;
5841         }
5842
5843  out:
5844         cb->args[2] = sta_idx;
5845         err = skb->len;
5846  out_err:
5847         rtnl_unlock();
5848
5849         return err;
5850 }
5851
5852 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5853 {
5854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5855         struct net_device *dev = info->user_ptr[1];
5856         struct station_info sinfo;
5857         struct sk_buff *msg;
5858         u8 *mac_addr = NULL;
5859         int err;
5860
5861         memset(&sinfo, 0, sizeof(sinfo));
5862
5863         if (!info->attrs[NL80211_ATTR_MAC])
5864                 return -EINVAL;
5865
5866         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5867
5868         if (!rdev->ops->get_station)
5869                 return -EOPNOTSUPP;
5870
5871         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5872         if (err)
5873                 return err;
5874
5875         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5876         if (!msg) {
5877                 cfg80211_sinfo_release_content(&sinfo);
5878                 return -ENOMEM;
5879         }
5880
5881         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5882                                  info->snd_portid, info->snd_seq, 0,
5883                                  rdev, dev, mac_addr, &sinfo) < 0) {
5884                 nlmsg_free(msg);
5885                 return -ENOBUFS;
5886         }
5887
5888         return genlmsg_reply(msg, info);
5889 }
5890
5891 int cfg80211_check_station_change(struct wiphy *wiphy,
5892                                   struct station_parameters *params,
5893                                   enum cfg80211_station_type statype)
5894 {
5895         if (params->listen_interval != -1 &&
5896             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5897                 return -EINVAL;
5898
5899         if (params->support_p2p_ps != -1 &&
5900             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5901                 return -EINVAL;
5902
5903         if (params->aid &&
5904             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5905             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5906                 return -EINVAL;
5907
5908         /* When you run into this, adjust the code below for the new flag */
5909         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5910
5911         switch (statype) {
5912         case CFG80211_STA_MESH_PEER_KERNEL:
5913         case CFG80211_STA_MESH_PEER_USER:
5914                 /*
5915                  * No ignoring the TDLS flag here -- the userspace mesh
5916                  * code doesn't have the bug of including TDLS in the
5917                  * mask everywhere.
5918                  */
5919                 if (params->sta_flags_mask &
5920                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5921                                   BIT(NL80211_STA_FLAG_MFP) |
5922                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5923                         return -EINVAL;
5924                 break;
5925         case CFG80211_STA_TDLS_PEER_SETUP:
5926         case CFG80211_STA_TDLS_PEER_ACTIVE:
5927                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5928                         return -EINVAL;
5929                 /* ignore since it can't change */
5930                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5931                 break;
5932         default:
5933                 /* disallow mesh-specific things */
5934                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5935                         return -EINVAL;
5936                 if (params->local_pm)
5937                         return -EINVAL;
5938                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5939                         return -EINVAL;
5940         }
5941
5942         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5943             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5944                 /* TDLS can't be set, ... */
5945                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5946                         return -EINVAL;
5947                 /*
5948                  * ... but don't bother the driver with it. This works around
5949                  * a hostapd/wpa_supplicant issue -- it always includes the
5950                  * TLDS_PEER flag in the mask even for AP mode.
5951                  */
5952                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5953         }
5954
5955         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5956             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5957                 /* reject other things that can't change */
5958                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5959                         return -EINVAL;
5960                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5961                         return -EINVAL;
5962                 if (params->supported_rates)
5963                         return -EINVAL;
5964                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5965                     params->he_capa)
5966                         return -EINVAL;
5967         }
5968
5969         if (statype != CFG80211_STA_AP_CLIENT &&
5970             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5971                 if (params->vlan)
5972                         return -EINVAL;
5973         }
5974
5975         switch (statype) {
5976         case CFG80211_STA_AP_MLME_CLIENT:
5977                 /* Use this only for authorizing/unauthorizing a station */
5978                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5979                         return -EOPNOTSUPP;
5980                 break;
5981         case CFG80211_STA_AP_CLIENT:
5982         case CFG80211_STA_AP_CLIENT_UNASSOC:
5983                 /* accept only the listed bits */
5984                 if (params->sta_flags_mask &
5985                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5986                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5987                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5988                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5989                                   BIT(NL80211_STA_FLAG_WME) |
5990                                   BIT(NL80211_STA_FLAG_MFP)))
5991                         return -EINVAL;
5992
5993                 /* but authenticated/associated only if driver handles it */
5994                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5995                     params->sta_flags_mask &
5996                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5997                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5998                         return -EINVAL;
5999                 break;
6000         case CFG80211_STA_IBSS:
6001         case CFG80211_STA_AP_STA:
6002                 /* reject any changes other than AUTHORIZED */
6003                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6004                         return -EINVAL;
6005                 break;
6006         case CFG80211_STA_TDLS_PEER_SETUP:
6007                 /* reject any changes other than AUTHORIZED or WME */
6008                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6009                                                BIT(NL80211_STA_FLAG_WME)))
6010                         return -EINVAL;
6011                 /* force (at least) rates when authorizing */
6012                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6013                     !params->supported_rates)
6014                         return -EINVAL;
6015                 break;
6016         case CFG80211_STA_TDLS_PEER_ACTIVE:
6017                 /* reject any changes */
6018                 return -EINVAL;
6019         case CFG80211_STA_MESH_PEER_KERNEL:
6020                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6021                         return -EINVAL;
6022                 break;
6023         case CFG80211_STA_MESH_PEER_USER:
6024                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6025                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6026                         return -EINVAL;
6027                 break;
6028         }
6029
6030         /*
6031          * Older kernel versions ignored this attribute entirely, so don't
6032          * reject attempts to update it but mark it as unused instead so the
6033          * driver won't look at the data.
6034          */
6035         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6036             statype != CFG80211_STA_TDLS_PEER_SETUP)
6037                 params->opmode_notif_used = false;
6038
6039         return 0;
6040 }
6041 EXPORT_SYMBOL(cfg80211_check_station_change);
6042
6043 /*
6044  * Get vlan interface making sure it is running and on the right wiphy.
6045  */
6046 static struct net_device *get_vlan(struct genl_info *info,
6047                                    struct cfg80211_registered_device *rdev)
6048 {
6049         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6050         struct net_device *v;
6051         int ret;
6052
6053         if (!vlanattr)
6054                 return NULL;
6055
6056         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6057         if (!v)
6058                 return ERR_PTR(-ENODEV);
6059
6060         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6061                 ret = -EINVAL;
6062                 goto error;
6063         }
6064
6065         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6066             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6067             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6068                 ret = -EINVAL;
6069                 goto error;
6070         }
6071
6072         if (!netif_running(v)) {
6073                 ret = -ENETDOWN;
6074                 goto error;
6075         }
6076
6077         return v;
6078  error:
6079         dev_put(v);
6080         return ERR_PTR(ret);
6081 }
6082
6083 static const struct nla_policy
6084 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6085         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6086         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6087 };
6088
6089 static int nl80211_parse_sta_wme(struct genl_info *info,
6090                                  struct station_parameters *params)
6091 {
6092         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6093         struct nlattr *nla;
6094         int err;
6095
6096         /* parse WME attributes if present */
6097         if (!info->attrs[NL80211_ATTR_STA_WME])
6098                 return 0;
6099
6100         nla = info->attrs[NL80211_ATTR_STA_WME];
6101         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6102                                           nl80211_sta_wme_policy,
6103                                           info->extack);
6104         if (err)
6105                 return err;
6106
6107         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6108                 params->uapsd_queues = nla_get_u8(
6109                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6110         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6111                 return -EINVAL;
6112
6113         if (tb[NL80211_STA_WME_MAX_SP])
6114                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6115
6116         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6117                 return -EINVAL;
6118
6119         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6120
6121         return 0;
6122 }
6123
6124 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6125                                       struct station_parameters *params)
6126 {
6127         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6128                 params->supported_channels =
6129                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6130                 params->supported_channels_len =
6131                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6132                 /*
6133                  * Need to include at least one (first channel, number of
6134                  * channels) tuple for each subband (checked in policy),
6135                  * and must have proper tuples for the rest of the data as well.
6136                  */
6137                 if (params->supported_channels_len % 2)
6138                         return -EINVAL;
6139         }
6140
6141         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6142                 params->supported_oper_classes =
6143                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6144                 params->supported_oper_classes_len =
6145                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6146         }
6147         return 0;
6148 }
6149
6150 static int nl80211_set_station_tdls(struct genl_info *info,
6151                                     struct station_parameters *params)
6152 {
6153         int err;
6154         /* Dummy STA entry gets updated once the peer capabilities are known */
6155         if (info->attrs[NL80211_ATTR_PEER_AID])
6156                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6157         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6158                 params->ht_capa =
6159                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6160         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6161                 params->vht_capa =
6162                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6163         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6164                 params->he_capa =
6165                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6166                 params->he_capa_len =
6167                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6168         }
6169
6170         err = nl80211_parse_sta_channel_info(info, params);
6171         if (err)
6172                 return err;
6173
6174         return nl80211_parse_sta_wme(info, params);
6175 }
6176
6177 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6178                                              struct station_parameters *params)
6179 {
6180         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6181         int idx;
6182
6183         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6184                 if (!rdev->ops->set_tx_power ||
6185                     !wiphy_ext_feature_isset(&rdev->wiphy,
6186                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6187                         return -EOPNOTSUPP;
6188
6189                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6190                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6191
6192                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6193                         idx = NL80211_ATTR_STA_TX_POWER;
6194
6195                         if (info->attrs[idx])
6196                                 params->txpwr.power =
6197                                         nla_get_s16(info->attrs[idx]);
6198                         else
6199                                 return -EINVAL;
6200                 }
6201                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6202         }
6203
6204         return 0;
6205 }
6206
6207 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6208 {
6209         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6210         struct net_device *dev = info->user_ptr[1];
6211         struct station_parameters params;
6212         u8 *mac_addr;
6213         int err;
6214
6215         memset(&params, 0, sizeof(params));
6216
6217         if (!rdev->ops->change_station)
6218                 return -EOPNOTSUPP;
6219
6220         /*
6221          * AID and listen_interval properties can be set only for unassociated
6222          * station. Include these parameters here and will check them in
6223          * cfg80211_check_station_change().
6224          */
6225         if (info->attrs[NL80211_ATTR_STA_AID])
6226                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6227
6228         if (info->attrs[NL80211_ATTR_VLAN_ID])
6229                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6230
6231         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6232                 params.listen_interval =
6233                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6234         else
6235                 params.listen_interval = -1;
6236
6237         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6238                 params.support_p2p_ps =
6239                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6240         else
6241                 params.support_p2p_ps = -1;
6242
6243         if (!info->attrs[NL80211_ATTR_MAC])
6244                 return -EINVAL;
6245
6246         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6247
6248         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6249                 params.supported_rates =
6250                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6251                 params.supported_rates_len =
6252                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6253         }
6254
6255         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6256                 params.capability =
6257                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6258                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6259         }
6260
6261         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6262                 params.ext_capab =
6263                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6264                 params.ext_capab_len =
6265                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6266         }
6267
6268         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6269                 return -EINVAL;
6270
6271         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6272                 params.plink_action =
6273                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6274
6275         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
6276                 params.plink_state =
6277                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6278                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6279                         params.peer_aid = nla_get_u16(
6280                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6281                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6282         }
6283
6284         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6285                 params.local_pm = nla_get_u32(
6286                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6287
6288         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6289                 params.opmode_notif_used = true;
6290                 params.opmode_notif =
6291                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6292         }
6293
6294         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6295                 params.he_6ghz_capa =
6296                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6297
6298         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6299                 params.airtime_weight =
6300                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6301
6302         if (params.airtime_weight &&
6303             !wiphy_ext_feature_isset(&rdev->wiphy,
6304                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6305                 return -EOPNOTSUPP;
6306
6307         err = nl80211_parse_sta_txpower_setting(info, &params);
6308         if (err)
6309                 return err;
6310
6311         /* Include parameters for TDLS peer (will check later) */
6312         err = nl80211_set_station_tdls(info, &params);
6313         if (err)
6314                 return err;
6315
6316         params.vlan = get_vlan(info, rdev);
6317         if (IS_ERR(params.vlan))
6318                 return PTR_ERR(params.vlan);
6319
6320         switch (dev->ieee80211_ptr->iftype) {
6321         case NL80211_IFTYPE_AP:
6322         case NL80211_IFTYPE_AP_VLAN:
6323         case NL80211_IFTYPE_P2P_GO:
6324         case NL80211_IFTYPE_P2P_CLIENT:
6325         case NL80211_IFTYPE_STATION:
6326         case NL80211_IFTYPE_ADHOC:
6327         case NL80211_IFTYPE_MESH_POINT:
6328                 break;
6329         default:
6330                 err = -EOPNOTSUPP;
6331                 goto out_put_vlan;
6332         }
6333
6334         /* driver will call cfg80211_check_station_change() */
6335         err = rdev_change_station(rdev, dev, mac_addr, &params);
6336
6337  out_put_vlan:
6338         if (params.vlan)
6339                 dev_put(params.vlan);
6340
6341         return err;
6342 }
6343
6344 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6345 {
6346         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6347         int err;
6348         struct net_device *dev = info->user_ptr[1];
6349         struct station_parameters params;
6350         u8 *mac_addr = NULL;
6351         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6352                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6353
6354         memset(&params, 0, sizeof(params));
6355
6356         if (!rdev->ops->add_station)
6357                 return -EOPNOTSUPP;
6358
6359         if (!info->attrs[NL80211_ATTR_MAC])
6360                 return -EINVAL;
6361
6362         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6363                 return -EINVAL;
6364
6365         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6366                 return -EINVAL;
6367
6368         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6369             !info->attrs[NL80211_ATTR_PEER_AID])
6370                 return -EINVAL;
6371
6372         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6373         params.supported_rates =
6374                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6375         params.supported_rates_len =
6376                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6377         params.listen_interval =
6378                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6379
6380         if (info->attrs[NL80211_ATTR_VLAN_ID])
6381                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6382
6383         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6384                 params.support_p2p_ps =
6385                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6386         } else {
6387                 /*
6388                  * if not specified, assume it's supported for P2P GO interface,
6389                  * and is NOT supported for AP interface
6390                  */
6391                 params.support_p2p_ps =
6392                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6393         }
6394
6395         if (info->attrs[NL80211_ATTR_PEER_AID])
6396                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6397         else
6398                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6399
6400         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6401                 params.capability =
6402                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6403                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6404         }
6405
6406         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6407                 params.ext_capab =
6408                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6409                 params.ext_capab_len =
6410                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6411         }
6412
6413         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6414                 params.ht_capa =
6415                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6416
6417         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6418                 params.vht_capa =
6419                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6420
6421         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6422                 params.he_capa =
6423                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6424                 params.he_capa_len =
6425                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6426         }
6427
6428         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6429                 params.he_6ghz_capa =
6430                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6431
6432         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6433                 params.opmode_notif_used = true;
6434                 params.opmode_notif =
6435                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6436         }
6437
6438         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6439                 params.plink_action =
6440                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6441
6442         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6443                 params.airtime_weight =
6444                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6445
6446         if (params.airtime_weight &&
6447             !wiphy_ext_feature_isset(&rdev->wiphy,
6448                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6449                 return -EOPNOTSUPP;
6450
6451         err = nl80211_parse_sta_txpower_setting(info, &params);
6452         if (err)
6453                 return err;
6454
6455         err = nl80211_parse_sta_channel_info(info, &params);
6456         if (err)
6457                 return err;
6458
6459         err = nl80211_parse_sta_wme(info, &params);
6460         if (err)
6461                 return err;
6462
6463         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6464                 return -EINVAL;
6465
6466         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6467          * as userspace might just pass through the capabilities from the IEs
6468          * directly, rather than enforcing this restriction and returning an
6469          * error in this case.
6470          */
6471         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6472                 params.ht_capa = NULL;
6473                 params.vht_capa = NULL;
6474
6475                 /* HE requires WME */
6476                 if (params.he_capa_len || params.he_6ghz_capa)
6477                         return -EINVAL;
6478         }
6479
6480         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6481         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6482                 return -EINVAL;
6483
6484         /* When you run into this, adjust the code below for the new flag */
6485         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6486
6487         switch (dev->ieee80211_ptr->iftype) {
6488         case NL80211_IFTYPE_AP:
6489         case NL80211_IFTYPE_AP_VLAN:
6490         case NL80211_IFTYPE_P2P_GO:
6491                 /* ignore WME attributes if iface/sta is not capable */
6492                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6493                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6494                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6495
6496                 /* TDLS peers cannot be added */
6497                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6498                     info->attrs[NL80211_ATTR_PEER_AID])
6499                         return -EINVAL;
6500                 /* but don't bother the driver with it */
6501                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6502
6503                 /* allow authenticated/associated only if driver handles it */
6504                 if (!(rdev->wiphy.features &
6505                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6506                     params.sta_flags_mask & auth_assoc)
6507                         return -EINVAL;
6508
6509                 /* Older userspace, or userspace wanting to be compatible with
6510                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6511                  * and assoc flags in the mask, but assumes the station will be
6512                  * added as associated anyway since this was the required driver
6513                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6514                  * introduced.
6515                  * In order to not bother drivers with this quirk in the API
6516                  * set the flags in both the mask and set for new stations in
6517                  * this case.
6518                  */
6519                 if (!(params.sta_flags_mask & auth_assoc)) {
6520                         params.sta_flags_mask |= auth_assoc;
6521                         params.sta_flags_set |= auth_assoc;
6522                 }
6523
6524                 /* must be last in here for error handling */
6525                 params.vlan = get_vlan(info, rdev);
6526                 if (IS_ERR(params.vlan))
6527                         return PTR_ERR(params.vlan);
6528                 break;
6529         case NL80211_IFTYPE_MESH_POINT:
6530                 /* ignore uAPSD data */
6531                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6532
6533                 /* associated is disallowed */
6534                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6535                         return -EINVAL;
6536                 /* TDLS peers cannot be added */
6537                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6538                     info->attrs[NL80211_ATTR_PEER_AID])
6539                         return -EINVAL;
6540                 break;
6541         case NL80211_IFTYPE_STATION:
6542         case NL80211_IFTYPE_P2P_CLIENT:
6543                 /* ignore uAPSD data */
6544                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6545
6546                 /* these are disallowed */
6547                 if (params.sta_flags_mask &
6548                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6549                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6550                         return -EINVAL;
6551                 /* Only TDLS peers can be added */
6552                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6553                         return -EINVAL;
6554                 /* Can only add if TDLS ... */
6555                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6556                         return -EOPNOTSUPP;
6557                 /* ... with external setup is supported */
6558                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6559                         return -EOPNOTSUPP;
6560                 /*
6561                  * Older wpa_supplicant versions always mark the TDLS peer
6562                  * as authorized, but it shouldn't yet be.
6563                  */
6564                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6565                 break;
6566         default:
6567                 return -EOPNOTSUPP;
6568         }
6569
6570         /* be aware of params.vlan when changing code here */
6571
6572         err = rdev_add_station(rdev, dev, mac_addr, &params);
6573
6574         if (params.vlan)
6575                 dev_put(params.vlan);
6576         return err;
6577 }
6578
6579 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6580 {
6581         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6582         struct net_device *dev = info->user_ptr[1];
6583         struct station_del_parameters params;
6584
6585         memset(&params, 0, sizeof(params));
6586
6587         if (info->attrs[NL80211_ATTR_MAC])
6588                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6589
6590         switch (dev->ieee80211_ptr->iftype) {
6591         case NL80211_IFTYPE_AP:
6592         case NL80211_IFTYPE_AP_VLAN:
6593         case NL80211_IFTYPE_MESH_POINT:
6594         case NL80211_IFTYPE_P2P_GO:
6595                 /* always accept these */
6596                 break;
6597         case NL80211_IFTYPE_ADHOC:
6598                 /* conditionally accept */
6599                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6600                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6601                         break;
6602                 return -EINVAL;
6603         default:
6604                 return -EINVAL;
6605         }
6606
6607         if (!rdev->ops->del_station)
6608                 return -EOPNOTSUPP;
6609
6610         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6611                 params.subtype =
6612                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6613                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6614                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6615                         return -EINVAL;
6616         } else {
6617                 /* Default to Deauthentication frame */
6618                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6619         }
6620
6621         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6622                 params.reason_code =
6623                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6624                 if (params.reason_code == 0)
6625                         return -EINVAL; /* 0 is reserved */
6626         } else {
6627                 /* Default to reason code 2 */
6628                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6629         }
6630
6631         return rdev_del_station(rdev, dev, &params);
6632 }
6633
6634 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6635                                 int flags, struct net_device *dev,
6636                                 u8 *dst, u8 *next_hop,
6637                                 struct mpath_info *pinfo)
6638 {
6639         void *hdr;
6640         struct nlattr *pinfoattr;
6641
6642         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6643         if (!hdr)
6644                 return -1;
6645
6646         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6647             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6648             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6649             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6650                 goto nla_put_failure;
6651
6652         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6653         if (!pinfoattr)
6654                 goto nla_put_failure;
6655         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6656             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6657                         pinfo->frame_qlen))
6658                 goto nla_put_failure;
6659         if (((pinfo->filled & MPATH_INFO_SN) &&
6660              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6661             ((pinfo->filled & MPATH_INFO_METRIC) &&
6662              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6663                          pinfo->metric)) ||
6664             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6665              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6666                          pinfo->exptime)) ||
6667             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6668              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6669                         pinfo->flags)) ||
6670             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6671              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6672                          pinfo->discovery_timeout)) ||
6673             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6674              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6675                         pinfo->discovery_retries)) ||
6676             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6677              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6678                         pinfo->hop_count)) ||
6679             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6680              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6681                          pinfo->path_change_count)))
6682                 goto nla_put_failure;
6683
6684         nla_nest_end(msg, pinfoattr);
6685
6686         genlmsg_end(msg, hdr);
6687         return 0;
6688
6689  nla_put_failure:
6690         genlmsg_cancel(msg, hdr);
6691         return -EMSGSIZE;
6692 }
6693
6694 static int nl80211_dump_mpath(struct sk_buff *skb,
6695                               struct netlink_callback *cb)
6696 {
6697         struct mpath_info pinfo;
6698         struct cfg80211_registered_device *rdev;
6699         struct wireless_dev *wdev;
6700         u8 dst[ETH_ALEN];
6701         u8 next_hop[ETH_ALEN];
6702         int path_idx = cb->args[2];
6703         int err;
6704
6705         rtnl_lock();
6706         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6707         if (err)
6708                 goto out_err;
6709
6710         if (!rdev->ops->dump_mpath) {
6711                 err = -EOPNOTSUPP;
6712                 goto out_err;
6713         }
6714
6715         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6716                 err = -EOPNOTSUPP;
6717                 goto out_err;
6718         }
6719
6720         while (1) {
6721                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6722                                       next_hop, &pinfo);
6723                 if (err == -ENOENT)
6724                         break;
6725                 if (err)
6726                         goto out_err;
6727
6728                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6729                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6730                                        wdev->netdev, dst, next_hop,
6731                                        &pinfo) < 0)
6732                         goto out;
6733
6734                 path_idx++;
6735         }
6736
6737  out:
6738         cb->args[2] = path_idx;
6739         err = skb->len;
6740  out_err:
6741         rtnl_unlock();
6742         return err;
6743 }
6744
6745 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6746 {
6747         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6748         int err;
6749         struct net_device *dev = info->user_ptr[1];
6750         struct mpath_info pinfo;
6751         struct sk_buff *msg;
6752         u8 *dst = NULL;
6753         u8 next_hop[ETH_ALEN];
6754
6755         memset(&pinfo, 0, sizeof(pinfo));
6756
6757         if (!info->attrs[NL80211_ATTR_MAC])
6758                 return -EINVAL;
6759
6760         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6761
6762         if (!rdev->ops->get_mpath)
6763                 return -EOPNOTSUPP;
6764
6765         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6766                 return -EOPNOTSUPP;
6767
6768         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6769         if (err)
6770                 return err;
6771
6772         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6773         if (!msg)
6774                 return -ENOMEM;
6775
6776         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6777                                  dev, dst, next_hop, &pinfo) < 0) {
6778                 nlmsg_free(msg);
6779                 return -ENOBUFS;
6780         }
6781
6782         return genlmsg_reply(msg, info);
6783 }
6784
6785 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6786 {
6787         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6788         struct net_device *dev = info->user_ptr[1];
6789         u8 *dst = NULL;
6790         u8 *next_hop = NULL;
6791
6792         if (!info->attrs[NL80211_ATTR_MAC])
6793                 return -EINVAL;
6794
6795         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6796                 return -EINVAL;
6797
6798         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6799         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6800
6801         if (!rdev->ops->change_mpath)
6802                 return -EOPNOTSUPP;
6803
6804         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6805                 return -EOPNOTSUPP;
6806
6807         return rdev_change_mpath(rdev, dev, dst, next_hop);
6808 }
6809
6810 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6811 {
6812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6813         struct net_device *dev = info->user_ptr[1];
6814         u8 *dst = NULL;
6815         u8 *next_hop = NULL;
6816
6817         if (!info->attrs[NL80211_ATTR_MAC])
6818                 return -EINVAL;
6819
6820         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6821                 return -EINVAL;
6822
6823         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6824         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6825
6826         if (!rdev->ops->add_mpath)
6827                 return -EOPNOTSUPP;
6828
6829         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6830                 return -EOPNOTSUPP;
6831
6832         return rdev_add_mpath(rdev, dev, dst, next_hop);
6833 }
6834
6835 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6836 {
6837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6838         struct net_device *dev = info->user_ptr[1];
6839         u8 *dst = NULL;
6840
6841         if (info->attrs[NL80211_ATTR_MAC])
6842                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6843
6844         if (!rdev->ops->del_mpath)
6845                 return -EOPNOTSUPP;
6846
6847         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6848                 return -EOPNOTSUPP;
6849
6850         return rdev_del_mpath(rdev, dev, dst);
6851 }
6852
6853 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6854 {
6855         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6856         int err;
6857         struct net_device *dev = info->user_ptr[1];
6858         struct mpath_info pinfo;
6859         struct sk_buff *msg;
6860         u8 *dst = NULL;
6861         u8 mpp[ETH_ALEN];
6862
6863         memset(&pinfo, 0, sizeof(pinfo));
6864
6865         if (!info->attrs[NL80211_ATTR_MAC])
6866                 return -EINVAL;
6867
6868         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6869
6870         if (!rdev->ops->get_mpp)
6871                 return -EOPNOTSUPP;
6872
6873         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6874                 return -EOPNOTSUPP;
6875
6876         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6877         if (err)
6878                 return err;
6879
6880         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6881         if (!msg)
6882                 return -ENOMEM;
6883
6884         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6885                                dev, dst, mpp, &pinfo) < 0) {
6886                 nlmsg_free(msg);
6887                 return -ENOBUFS;
6888         }
6889
6890         return genlmsg_reply(msg, info);
6891 }
6892
6893 static int nl80211_dump_mpp(struct sk_buff *skb,
6894                             struct netlink_callback *cb)
6895 {
6896         struct mpath_info pinfo;
6897         struct cfg80211_registered_device *rdev;
6898         struct wireless_dev *wdev;
6899         u8 dst[ETH_ALEN];
6900         u8 mpp[ETH_ALEN];
6901         int path_idx = cb->args[2];
6902         int err;
6903
6904         rtnl_lock();
6905         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6906         if (err)
6907                 goto out_err;
6908
6909         if (!rdev->ops->dump_mpp) {
6910                 err = -EOPNOTSUPP;
6911                 goto out_err;
6912         }
6913
6914         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6915                 err = -EOPNOTSUPP;
6916                 goto out_err;
6917         }
6918
6919         while (1) {
6920                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6921                                     mpp, &pinfo);
6922                 if (err == -ENOENT)
6923                         break;
6924                 if (err)
6925                         goto out_err;
6926
6927                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6928                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6929                                        wdev->netdev, dst, mpp,
6930                                        &pinfo) < 0)
6931                         goto out;
6932
6933                 path_idx++;
6934         }
6935
6936  out:
6937         cb->args[2] = path_idx;
6938         err = skb->len;
6939  out_err:
6940         rtnl_unlock();
6941         return err;
6942 }
6943
6944 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6945 {
6946         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6947         struct net_device *dev = info->user_ptr[1];
6948         struct wireless_dev *wdev = dev->ieee80211_ptr;
6949         struct bss_parameters params;
6950         int err;
6951
6952         memset(&params, 0, sizeof(params));
6953         /* default to not changing parameters */
6954         params.use_cts_prot = -1;
6955         params.use_short_preamble = -1;
6956         params.use_short_slot_time = -1;
6957         params.ap_isolate = -1;
6958         params.ht_opmode = -1;
6959         params.p2p_ctwindow = -1;
6960         params.p2p_opp_ps = -1;
6961
6962         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6963                 params.use_cts_prot =
6964                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6965         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6966                 params.use_short_preamble =
6967                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6968         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6969                 params.use_short_slot_time =
6970                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6971         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6972                 params.basic_rates =
6973                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6974                 params.basic_rates_len =
6975                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6976         }
6977         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6978                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6979         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6980                 params.ht_opmode =
6981                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6982
6983         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6984                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6985                         return -EINVAL;
6986                 params.p2p_ctwindow =
6987                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6988                 if (params.p2p_ctwindow != 0 &&
6989                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6990                         return -EINVAL;
6991         }
6992
6993         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6994                 u8 tmp;
6995
6996                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6997                         return -EINVAL;
6998                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6999                 params.p2p_opp_ps = tmp;
7000                 if (params.p2p_opp_ps &&
7001                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7002                         return -EINVAL;
7003         }
7004
7005         if (!rdev->ops->change_bss)
7006                 return -EOPNOTSUPP;
7007
7008         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7009             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7010                 return -EOPNOTSUPP;
7011
7012         wdev_lock(wdev);
7013         err = rdev_change_bss(rdev, dev, &params);
7014         wdev_unlock(wdev);
7015
7016         return err;
7017 }
7018
7019 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7020 {
7021         char *data = NULL;
7022         bool is_indoor;
7023         enum nl80211_user_reg_hint_type user_reg_hint_type;
7024         u32 owner_nlportid;
7025
7026         /*
7027          * You should only get this when cfg80211 hasn't yet initialized
7028          * completely when built-in to the kernel right between the time
7029          * window between nl80211_init() and regulatory_init(), if that is
7030          * even possible.
7031          */
7032         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7033                 return -EINPROGRESS;
7034
7035         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7036                 user_reg_hint_type =
7037                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7038         else
7039                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7040
7041         switch (user_reg_hint_type) {
7042         case NL80211_USER_REG_HINT_USER:
7043         case NL80211_USER_REG_HINT_CELL_BASE:
7044                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7045                         return -EINVAL;
7046
7047                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7048                 return regulatory_hint_user(data, user_reg_hint_type);
7049         case NL80211_USER_REG_HINT_INDOOR:
7050                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7051                         owner_nlportid = info->snd_portid;
7052                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7053                 } else {
7054                         owner_nlportid = 0;
7055                         is_indoor = true;
7056                 }
7057
7058                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7059         default:
7060                 return -EINVAL;
7061         }
7062 }
7063
7064 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7065 {
7066         return reg_reload_regdb();
7067 }
7068
7069 static int nl80211_get_mesh_config(struct sk_buff *skb,
7070                                    struct genl_info *info)
7071 {
7072         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7073         struct net_device *dev = info->user_ptr[1];
7074         struct wireless_dev *wdev = dev->ieee80211_ptr;
7075         struct mesh_config cur_params;
7076         int err = 0;
7077         void *hdr;
7078         struct nlattr *pinfoattr;
7079         struct sk_buff *msg;
7080
7081         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7082                 return -EOPNOTSUPP;
7083
7084         if (!rdev->ops->get_mesh_config)
7085                 return -EOPNOTSUPP;
7086
7087         wdev_lock(wdev);
7088         /* If not connected, get default parameters */
7089         if (!wdev->mesh_id_len)
7090                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7091         else
7092                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7093         wdev_unlock(wdev);
7094
7095         if (err)
7096                 return err;
7097
7098         /* Draw up a netlink message to send back */
7099         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7100         if (!msg)
7101                 return -ENOMEM;
7102         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7103                              NL80211_CMD_GET_MESH_CONFIG);
7104         if (!hdr)
7105                 goto out;
7106         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7107         if (!pinfoattr)
7108                 goto nla_put_failure;
7109         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7110             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7111                         cur_params.dot11MeshRetryTimeout) ||
7112             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7113                         cur_params.dot11MeshConfirmTimeout) ||
7114             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7115                         cur_params.dot11MeshHoldingTimeout) ||
7116             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7117                         cur_params.dot11MeshMaxPeerLinks) ||
7118             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7119                        cur_params.dot11MeshMaxRetries) ||
7120             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7121                        cur_params.dot11MeshTTL) ||
7122             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7123                        cur_params.element_ttl) ||
7124             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7125                        cur_params.auto_open_plinks) ||
7126             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7127                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7128             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7129                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7130             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7131                         cur_params.path_refresh_time) ||
7132             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7133                         cur_params.min_discovery_timeout) ||
7134             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7135                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7136             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7137                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7138             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7139                         cur_params.dot11MeshHWMPperrMinInterval) ||
7140             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7141                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7142             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7143                        cur_params.dot11MeshHWMPRootMode) ||
7144             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7145                         cur_params.dot11MeshHWMPRannInterval) ||
7146             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7147                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7148             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7149                        cur_params.dot11MeshForwarding) ||
7150             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7151                         cur_params.rssi_threshold) ||
7152             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7153                         cur_params.ht_opmode) ||
7154             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7155                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7156             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7157                         cur_params.dot11MeshHWMProotInterval) ||
7158             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7159                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7160             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7161                         cur_params.power_mode) ||
7162             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7163                         cur_params.dot11MeshAwakeWindowDuration) ||
7164             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7165                         cur_params.plink_timeout) ||
7166             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7167                        cur_params.dot11MeshConnectedToMeshGate) ||
7168             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7169                        cur_params.dot11MeshNolearn) ||
7170             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7171                        cur_params.dot11MeshConnectedToAuthServer))
7172                 goto nla_put_failure;
7173         nla_nest_end(msg, pinfoattr);
7174         genlmsg_end(msg, hdr);
7175         return genlmsg_reply(msg, info);
7176
7177  nla_put_failure:
7178  out:
7179         nlmsg_free(msg);
7180         return -ENOBUFS;
7181 }
7182
7183 static const struct nla_policy
7184 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7185         [NL80211_MESHCONF_RETRY_TIMEOUT] =
7186                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7187         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7188                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7189         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7190                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7191         [NL80211_MESHCONF_MAX_PEER_LINKS] =
7192                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7193         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7194         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7195         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7196         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7197         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7198                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7199         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7200         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7201         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7202         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7203         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7204                 NLA_POLICY_MIN(NLA_U16, 1),
7205         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7206                 NLA_POLICY_MIN(NLA_U16, 1),
7207         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7208                 NLA_POLICY_MIN(NLA_U16, 1),
7209         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7210         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7211                 NLA_POLICY_MIN(NLA_U16, 1),
7212         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7213         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7214         [NL80211_MESHCONF_RSSI_THRESHOLD] =
7215                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7216         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7217         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7218         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7219                 NLA_POLICY_MIN(NLA_U16, 1),
7220         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7221                 NLA_POLICY_MIN(NLA_U16, 1),
7222         [NL80211_MESHCONF_POWER_MODE] =
7223                 NLA_POLICY_RANGE(NLA_U32,
7224                                  NL80211_MESH_POWER_ACTIVE,
7225                                  NL80211_MESH_POWER_MAX),
7226         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7227         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7228         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7229         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7230         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7231 };
7232
7233 static const struct nla_policy
7234         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7235         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7236         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7237         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7238         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7239         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7240         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7241         [NL80211_MESH_SETUP_IE] =
7242                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7243                                        IEEE80211_MAX_DATA_LEN),
7244         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7245 };
7246
7247 static int nl80211_parse_mesh_config(struct genl_info *info,
7248                                      struct mesh_config *cfg,
7249                                      u32 *mask_out)
7250 {
7251         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7252         u32 mask = 0;
7253         u16 ht_opmode;
7254
7255 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
7256 do {                                                                    \
7257         if (tb[attr]) {                                                 \
7258                 cfg->param = fn(tb[attr]);                              \
7259                 mask |= BIT((attr) - 1);                                \
7260         }                                                               \
7261 } while (0)
7262
7263         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7264                 return -EINVAL;
7265         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7266                 return -EINVAL;
7267
7268         /* This makes sure that there aren't more than 32 mesh config
7269          * parameters (otherwise our bitfield scheme would not work.) */
7270         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7271
7272         /* Fill in the params struct */
7273         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7274                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7275         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7276                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
7277                                   nla_get_u16);
7278         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7279                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7280                                   nla_get_u16);
7281         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7282                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7283                                   nla_get_u16);
7284         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7285                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7286         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7287                                   NL80211_MESHCONF_TTL, nla_get_u8);
7288         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7289                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7290         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7291                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7292                                   nla_get_u8);
7293         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7294                                   mask,
7295                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7296                                   nla_get_u32);
7297         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7298                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7299                                   nla_get_u8);
7300         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7301                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7302                                   nla_get_u32);
7303         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7304             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7305                 return -EINVAL;
7306         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7307                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7308                                   nla_get_u16);
7309         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7310                                   mask,
7311                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7312                                   nla_get_u32);
7313         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7314             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7315              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7316                 return -EINVAL;
7317         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7318                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7319                                   nla_get_u16);
7320         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7321                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7322                                   nla_get_u16);
7323         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7324                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7325                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7326                                   nla_get_u16);
7327         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7328                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7329         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7330                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7331                                   nla_get_u16);
7332         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7333                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7334                                   nla_get_u8);
7335         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7336                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7337         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7338                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7339                                   nla_get_s32);
7340         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7341                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7342                                   nla_get_u8);
7343         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7344                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7345                                   nla_get_u8);
7346         /*
7347          * Check HT operation mode based on
7348          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7349          */
7350         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7351                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7352
7353                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7354                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7355                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7356                         return -EINVAL;
7357
7358                 /* NON_HT_STA bit is reserved, but some programs set it */
7359                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7360
7361                 cfg->ht_opmode = ht_opmode;
7362                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7363         }
7364         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7365                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7366                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7367                                   nla_get_u32);
7368         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7369             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7370              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7371                 return -EINVAL;
7372         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7373                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7374                                   nla_get_u16);
7375         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7376                                   mask,
7377                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7378                                   nla_get_u16);
7379         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7380                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7381         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7382                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7383         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7384                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7385         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7386                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7387         if (mask_out)
7388                 *mask_out = mask;
7389
7390         return 0;
7391
7392 #undef FILL_IN_MESH_PARAM_IF_SET
7393 }
7394
7395 static int nl80211_parse_mesh_setup(struct genl_info *info,
7396                                      struct mesh_setup *setup)
7397 {
7398         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7399         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7400
7401         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7402                 return -EINVAL;
7403         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7404                 return -EINVAL;
7405
7406         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7407                 setup->sync_method =
7408                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7409                  IEEE80211_SYNC_METHOD_VENDOR :
7410                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7411
7412         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7413                 setup->path_sel_proto =
7414                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7415                  IEEE80211_PATH_PROTOCOL_VENDOR :
7416                  IEEE80211_PATH_PROTOCOL_HWMP;
7417
7418         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7419                 setup->path_metric =
7420                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7421                  IEEE80211_PATH_METRIC_VENDOR :
7422                  IEEE80211_PATH_METRIC_AIRTIME;
7423
7424         if (tb[NL80211_MESH_SETUP_IE]) {
7425                 struct nlattr *ieattr =
7426                         tb[NL80211_MESH_SETUP_IE];
7427                 setup->ie = nla_data(ieattr);
7428                 setup->ie_len = nla_len(ieattr);
7429         }
7430         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7431             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7432                 return -EINVAL;
7433         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7434         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7435         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7436         if (setup->is_secure)
7437                 setup->user_mpm = true;
7438
7439         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7440                 if (!setup->user_mpm)
7441                         return -EINVAL;
7442                 setup->auth_id =
7443                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7444         }
7445
7446         return 0;
7447 }
7448
7449 static int nl80211_update_mesh_config(struct sk_buff *skb,
7450                                       struct genl_info *info)
7451 {
7452         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7453         struct net_device *dev = info->user_ptr[1];
7454         struct wireless_dev *wdev = dev->ieee80211_ptr;
7455         struct mesh_config cfg;
7456         u32 mask;
7457         int err;
7458
7459         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7460                 return -EOPNOTSUPP;
7461
7462         if (!rdev->ops->update_mesh_config)
7463                 return -EOPNOTSUPP;
7464
7465         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7466         if (err)
7467                 return err;
7468
7469         wdev_lock(wdev);
7470         if (!wdev->mesh_id_len)
7471                 err = -ENOLINK;
7472
7473         if (!err)
7474                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7475
7476         wdev_unlock(wdev);
7477
7478         return err;
7479 }
7480
7481 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7482                               struct sk_buff *msg)
7483 {
7484         struct nlattr *nl_reg_rules;
7485         unsigned int i;
7486
7487         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7488             (regdom->dfs_region &&
7489              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7490                 goto nla_put_failure;
7491
7492         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7493         if (!nl_reg_rules)
7494                 goto nla_put_failure;
7495
7496         for (i = 0; i < regdom->n_reg_rules; i++) {
7497                 struct nlattr *nl_reg_rule;
7498                 const struct ieee80211_reg_rule *reg_rule;
7499                 const struct ieee80211_freq_range *freq_range;
7500                 const struct ieee80211_power_rule *power_rule;
7501                 unsigned int max_bandwidth_khz;
7502
7503                 reg_rule = &regdom->reg_rules[i];
7504                 freq_range = &reg_rule->freq_range;
7505                 power_rule = &reg_rule->power_rule;
7506
7507                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7508                 if (!nl_reg_rule)
7509                         goto nla_put_failure;
7510
7511                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7512                 if (!max_bandwidth_khz)
7513                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7514                                                                   reg_rule);
7515
7516                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7517                                 reg_rule->flags) ||
7518                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7519                                 freq_range->start_freq_khz) ||
7520                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7521                                 freq_range->end_freq_khz) ||
7522                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7523                                 max_bandwidth_khz) ||
7524                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7525                                 power_rule->max_antenna_gain) ||
7526                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7527                                 power_rule->max_eirp) ||
7528                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7529                                 reg_rule->dfs_cac_ms))
7530                         goto nla_put_failure;
7531
7532                 nla_nest_end(msg, nl_reg_rule);
7533         }
7534
7535         nla_nest_end(msg, nl_reg_rules);
7536         return 0;
7537
7538 nla_put_failure:
7539         return -EMSGSIZE;
7540 }
7541
7542 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7543 {
7544         const struct ieee80211_regdomain *regdom = NULL;
7545         struct cfg80211_registered_device *rdev;
7546         struct wiphy *wiphy = NULL;
7547         struct sk_buff *msg;
7548         void *hdr;
7549
7550         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7551         if (!msg)
7552                 return -ENOBUFS;
7553
7554         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7555                              NL80211_CMD_GET_REG);
7556         if (!hdr)
7557                 goto put_failure;
7558
7559         if (info->attrs[NL80211_ATTR_WIPHY]) {
7560                 bool self_managed;
7561
7562                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7563                 if (IS_ERR(rdev)) {
7564                         nlmsg_free(msg);
7565                         return PTR_ERR(rdev);
7566                 }
7567
7568                 wiphy = &rdev->wiphy;
7569                 self_managed = wiphy->regulatory_flags &
7570                                REGULATORY_WIPHY_SELF_MANAGED;
7571                 regdom = get_wiphy_regdom(wiphy);
7572
7573                 /* a self-managed-reg device must have a private regdom */
7574                 if (WARN_ON(!regdom && self_managed)) {
7575                         nlmsg_free(msg);
7576                         return -EINVAL;
7577                 }
7578
7579                 if (regdom &&
7580                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7581                         goto nla_put_failure;
7582         }
7583
7584         if (!wiphy && reg_last_request_cell_base() &&
7585             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7586                         NL80211_USER_REG_HINT_CELL_BASE))
7587                 goto nla_put_failure;
7588
7589         rcu_read_lock();
7590
7591         if (!regdom)
7592                 regdom = rcu_dereference(cfg80211_regdomain);
7593
7594         if (nl80211_put_regdom(regdom, msg))
7595                 goto nla_put_failure_rcu;
7596
7597         rcu_read_unlock();
7598
7599         genlmsg_end(msg, hdr);
7600         return genlmsg_reply(msg, info);
7601
7602 nla_put_failure_rcu:
7603         rcu_read_unlock();
7604 nla_put_failure:
7605 put_failure:
7606         nlmsg_free(msg);
7607         return -EMSGSIZE;
7608 }
7609
7610 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7611                                u32 seq, int flags, struct wiphy *wiphy,
7612                                const struct ieee80211_regdomain *regdom)
7613 {
7614         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7615                                    NL80211_CMD_GET_REG);
7616
7617         if (!hdr)
7618                 return -1;
7619
7620         genl_dump_check_consistent(cb, hdr);
7621
7622         if (nl80211_put_regdom(regdom, msg))
7623                 goto nla_put_failure;
7624
7625         if (!wiphy && reg_last_request_cell_base() &&
7626             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7627                         NL80211_USER_REG_HINT_CELL_BASE))
7628                 goto nla_put_failure;
7629
7630         if (wiphy &&
7631             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7632                 goto nla_put_failure;
7633
7634         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7635             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7636                 goto nla_put_failure;
7637
7638         genlmsg_end(msg, hdr);
7639         return 0;
7640
7641 nla_put_failure:
7642         genlmsg_cancel(msg, hdr);
7643         return -EMSGSIZE;
7644 }
7645
7646 static int nl80211_get_reg_dump(struct sk_buff *skb,
7647                                 struct netlink_callback *cb)
7648 {
7649         const struct ieee80211_regdomain *regdom = NULL;
7650         struct cfg80211_registered_device *rdev;
7651         int err, reg_idx, start = cb->args[2];
7652
7653         rtnl_lock();
7654
7655         if (cfg80211_regdomain && start == 0) {
7656                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7657                                           NLM_F_MULTI, NULL,
7658                                           rtnl_dereference(cfg80211_regdomain));
7659                 if (err < 0)
7660                         goto out_err;
7661         }
7662
7663         /* the global regdom is idx 0 */
7664         reg_idx = 1;
7665         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7666                 regdom = get_wiphy_regdom(&rdev->wiphy);
7667                 if (!regdom)
7668                         continue;
7669
7670                 if (++reg_idx <= start)
7671                         continue;
7672
7673                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7674                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7675                 if (err < 0) {
7676                         reg_idx--;
7677                         break;
7678                 }
7679         }
7680
7681         cb->args[2] = reg_idx;
7682         err = skb->len;
7683 out_err:
7684         rtnl_unlock();
7685         return err;
7686 }
7687
7688 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7689 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7690         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7691         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7692         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7693         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7694         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7695         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7696         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7697 };
7698
7699 static int parse_reg_rule(struct nlattr *tb[],
7700         struct ieee80211_reg_rule *reg_rule)
7701 {
7702         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7703         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7704
7705         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7706                 return -EINVAL;
7707         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7708                 return -EINVAL;
7709         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7710                 return -EINVAL;
7711         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7712                 return -EINVAL;
7713         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7714                 return -EINVAL;
7715
7716         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7717
7718         freq_range->start_freq_khz =
7719                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7720         freq_range->end_freq_khz =
7721                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7722         freq_range->max_bandwidth_khz =
7723                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7724
7725         power_rule->max_eirp =
7726                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7727
7728         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7729                 power_rule->max_antenna_gain =
7730                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7731
7732         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7733                 reg_rule->dfs_cac_ms =
7734                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7735
7736         return 0;
7737 }
7738
7739 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7740 {
7741         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7742         struct nlattr *nl_reg_rule;
7743         char *alpha2;
7744         int rem_reg_rules, r;
7745         u32 num_rules = 0, rule_idx = 0;
7746         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7747         struct ieee80211_regdomain *rd;
7748
7749         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7750                 return -EINVAL;
7751
7752         if (!info->attrs[NL80211_ATTR_REG_RULES])
7753                 return -EINVAL;
7754
7755         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7756
7757         if (info->attrs[NL80211_ATTR_DFS_REGION])
7758                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7759
7760         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7761                             rem_reg_rules) {
7762                 num_rules++;
7763                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7764                         return -EINVAL;
7765         }
7766
7767         if (!reg_is_valid_request(alpha2))
7768                 return -EINVAL;
7769
7770         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7771         if (!rd)
7772                 return -ENOMEM;
7773
7774         rd->n_reg_rules = num_rules;
7775         rd->alpha2[0] = alpha2[0];
7776         rd->alpha2[1] = alpha2[1];
7777
7778         /*
7779          * Disable DFS master mode if the DFS region was
7780          * not supported or known on this kernel.
7781          */
7782         if (reg_supported_dfs_region(dfs_region))
7783                 rd->dfs_region = dfs_region;
7784
7785         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7786                             rem_reg_rules) {
7787                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7788                                                 nl_reg_rule, reg_rule_policy,
7789                                                 info->extack);
7790                 if (r)
7791                         goto bad_reg;
7792                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7793                 if (r)
7794                         goto bad_reg;
7795
7796                 rule_idx++;
7797
7798                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7799                         r = -EINVAL;
7800                         goto bad_reg;
7801                 }
7802         }
7803
7804         /* set_regdom takes ownership of rd */
7805         return set_regdom(rd, REGD_SOURCE_CRDA);
7806  bad_reg:
7807         kfree(rd);
7808         return r;
7809 }
7810 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7811
7812 static int validate_scan_freqs(struct nlattr *freqs)
7813 {
7814         struct nlattr *attr1, *attr2;
7815         int n_channels = 0, tmp1, tmp2;
7816
7817         nla_for_each_nested(attr1, freqs, tmp1)
7818                 if (nla_len(attr1) != sizeof(u32))
7819                         return 0;
7820
7821         nla_for_each_nested(attr1, freqs, tmp1) {
7822                 n_channels++;
7823                 /*
7824                  * Some hardware has a limited channel list for
7825                  * scanning, and it is pretty much nonsensical
7826                  * to scan for a channel twice, so disallow that
7827                  * and don't require drivers to check that the
7828                  * channel list they get isn't longer than what
7829                  * they can scan, as long as they can scan all
7830                  * the channels they registered at once.
7831                  */
7832                 nla_for_each_nested(attr2, freqs, tmp2)
7833                         if (attr1 != attr2 &&
7834                             nla_get_u32(attr1) == nla_get_u32(attr2))
7835                                 return 0;
7836         }
7837
7838         return n_channels;
7839 }
7840
7841 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7842 {
7843         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7844 }
7845
7846 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7847                             struct cfg80211_bss_selection *bss_select)
7848 {
7849         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7850         struct nlattr *nest;
7851         int err;
7852         bool found = false;
7853         int i;
7854
7855         /* only process one nested attribute */
7856         nest = nla_data(nla);
7857         if (!nla_ok(nest, nla_len(nest)))
7858                 return -EINVAL;
7859
7860         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7861                                           nest, nl80211_bss_select_policy,
7862                                           NULL);
7863         if (err)
7864                 return err;
7865
7866         /* only one attribute may be given */
7867         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7868                 if (attr[i]) {
7869                         if (found)
7870                                 return -EINVAL;
7871                         found = true;
7872                 }
7873         }
7874
7875         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7876
7877         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7878                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7879
7880         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7881                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7882                 bss_select->param.band_pref =
7883                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7884                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7885                         return -EINVAL;
7886         }
7887
7888         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7889                 struct nl80211_bss_select_rssi_adjust *adj_param;
7890
7891                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7892                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7893                 bss_select->param.adjust.band = adj_param->band;
7894                 bss_select->param.adjust.delta = adj_param->delta;
7895                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7896                         return -EINVAL;
7897         }
7898
7899         /* user-space did not provide behaviour attribute */
7900         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7901                 return -EINVAL;
7902
7903         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7904                 return -EINVAL;
7905
7906         return 0;
7907 }
7908
7909 int nl80211_parse_random_mac(struct nlattr **attrs,
7910                              u8 *mac_addr, u8 *mac_addr_mask)
7911 {
7912         int i;
7913
7914         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7915                 eth_zero_addr(mac_addr);
7916                 eth_zero_addr(mac_addr_mask);
7917                 mac_addr[0] = 0x2;
7918                 mac_addr_mask[0] = 0x3;
7919
7920                 return 0;
7921         }
7922
7923         /* need both or none */
7924         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7925                 return -EINVAL;
7926
7927         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7928         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7929
7930         /* don't allow or configure an mcast address */
7931         if (!is_multicast_ether_addr(mac_addr_mask) ||
7932             is_multicast_ether_addr(mac_addr))
7933                 return -EINVAL;
7934
7935         /*
7936          * allow users to pass a MAC address that has bits set outside
7937          * of the mask, but don't bother drivers with having to deal
7938          * with such bits
7939          */
7940         for (i = 0; i < ETH_ALEN; i++)
7941                 mac_addr[i] &= mac_addr_mask[i];
7942
7943         return 0;
7944 }
7945
7946 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7947 {
7948         ASSERT_WDEV_LOCK(wdev);
7949
7950         if (!cfg80211_beaconing_iface_active(wdev))
7951                 return true;
7952
7953         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7954                 return true;
7955
7956         return regulatory_pre_cac_allowed(wdev->wiphy);
7957 }
7958
7959 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7960                                     enum nl80211_ext_feature_index feat)
7961 {
7962         if (!(flags & flag))
7963                 return true;
7964         if (wiphy_ext_feature_isset(wiphy, feat))
7965                 return true;
7966         return false;
7967 }
7968
7969 static int
7970 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7971                          void *request, struct nlattr **attrs,
7972                          bool is_sched_scan)
7973 {
7974         u8 *mac_addr, *mac_addr_mask;
7975         u32 *flags;
7976         enum nl80211_feature_flags randomness_flag;
7977
7978         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7979                 return 0;
7980
7981         if (is_sched_scan) {
7982                 struct cfg80211_sched_scan_request *req = request;
7983
7984                 randomness_flag = wdev ?
7985                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7986                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7987                 flags = &req->flags;
7988                 mac_addr = req->mac_addr;
7989                 mac_addr_mask = req->mac_addr_mask;
7990         } else {
7991                 struct cfg80211_scan_request *req = request;
7992
7993                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7994                 flags = &req->flags;
7995                 mac_addr = req->mac_addr;
7996                 mac_addr_mask = req->mac_addr_mask;
7997         }
7998
7999         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8000
8001         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8002              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8003             !nl80211_check_scan_feat(wiphy, *flags,
8004                                      NL80211_SCAN_FLAG_LOW_SPAN,
8005                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8006             !nl80211_check_scan_feat(wiphy, *flags,
8007                                      NL80211_SCAN_FLAG_LOW_POWER,
8008                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8009             !nl80211_check_scan_feat(wiphy, *flags,
8010                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8011                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8012             !nl80211_check_scan_feat(wiphy, *flags,
8013                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8014                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8015             !nl80211_check_scan_feat(wiphy, *flags,
8016                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8017                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8018             !nl80211_check_scan_feat(wiphy, *flags,
8019                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8020                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8021             !nl80211_check_scan_feat(wiphy, *flags,
8022                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8023                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8024             !nl80211_check_scan_feat(wiphy, *flags,
8025                                      NL80211_SCAN_FLAG_RANDOM_SN,
8026                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8027             !nl80211_check_scan_feat(wiphy, *flags,
8028                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8029                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8030                 return -EOPNOTSUPP;
8031
8032         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8033                 int err;
8034
8035                 if (!(wiphy->features & randomness_flag) ||
8036                     (wdev && wdev->current_bss))
8037                         return -EOPNOTSUPP;
8038
8039                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8040                 if (err)
8041                         return err;
8042         }
8043
8044         return 0;
8045 }
8046
8047 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8048 {
8049         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8050         struct wireless_dev *wdev = info->user_ptr[1];
8051         struct cfg80211_scan_request *request;
8052         struct nlattr *scan_freqs = NULL;
8053         bool scan_freqs_khz = false;
8054         struct nlattr *attr;
8055         struct wiphy *wiphy;
8056         int err, tmp, n_ssids = 0, n_channels, i;
8057         size_t ie_len;
8058
8059         wiphy = &rdev->wiphy;
8060
8061         if (wdev->iftype == NL80211_IFTYPE_NAN)
8062                 return -EOPNOTSUPP;
8063
8064         if (!rdev->ops->scan)
8065                 return -EOPNOTSUPP;
8066
8067         if (rdev->scan_req || rdev->scan_msg)
8068                 return -EBUSY;
8069
8070         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8071                 if (!wiphy_ext_feature_isset(wiphy,
8072                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8073                         return -EOPNOTSUPP;
8074                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8075                 scan_freqs_khz = true;
8076         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8077                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8078
8079         if (scan_freqs) {
8080                 n_channels = validate_scan_freqs(scan_freqs);
8081                 if (!n_channels)
8082                         return -EINVAL;
8083         } else {
8084                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8085         }
8086
8087         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8088                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8089                         n_ssids++;
8090
8091         if (n_ssids > wiphy->max_scan_ssids)
8092                 return -EINVAL;
8093
8094         if (info->attrs[NL80211_ATTR_IE])
8095                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8096         else
8097                 ie_len = 0;
8098
8099         if (ie_len > wiphy->max_scan_ie_len)
8100                 return -EINVAL;
8101
8102         request = kzalloc(sizeof(*request)
8103                         + sizeof(*request->ssids) * n_ssids
8104                         + sizeof(*request->channels) * n_channels
8105                         + ie_len, GFP_KERNEL);
8106         if (!request)
8107                 return -ENOMEM;
8108
8109         if (n_ssids)
8110                 request->ssids = (void *)&request->channels[n_channels];
8111         request->n_ssids = n_ssids;
8112         if (ie_len) {
8113                 if (n_ssids)
8114                         request->ie = (void *)(request->ssids + n_ssids);
8115                 else
8116                         request->ie = (void *)(request->channels + n_channels);
8117         }
8118
8119         i = 0;
8120         if (scan_freqs) {
8121                 /* user specified, bail out if channel not found */
8122                 nla_for_each_nested(attr, scan_freqs, tmp) {
8123                         struct ieee80211_channel *chan;
8124                         int freq = nla_get_u32(attr);
8125
8126                         if (!scan_freqs_khz)
8127                                 freq = MHZ_TO_KHZ(freq);
8128
8129                         chan = ieee80211_get_channel_khz(wiphy, freq);
8130                         if (!chan) {
8131                                 err = -EINVAL;
8132                                 goto out_free;
8133                         }
8134
8135                         /* ignore disabled channels */
8136                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8137                                 continue;
8138
8139                         request->channels[i] = chan;
8140                         i++;
8141                 }
8142         } else {
8143                 enum nl80211_band band;
8144
8145                 /* all channels */
8146                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8147                         int j;
8148
8149                         if (!wiphy->bands[band])
8150                                 continue;
8151                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8152                                 struct ieee80211_channel *chan;
8153
8154                                 chan = &wiphy->bands[band]->channels[j];
8155
8156                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8157                                         continue;
8158
8159                                 request->channels[i] = chan;
8160                                 i++;
8161                         }
8162                 }
8163         }
8164
8165         if (!i) {
8166                 err = -EINVAL;
8167                 goto out_free;
8168         }
8169
8170         request->n_channels = i;
8171
8172         wdev_lock(wdev);
8173         if (!cfg80211_off_channel_oper_allowed(wdev)) {
8174                 struct ieee80211_channel *chan;
8175
8176                 if (request->n_channels != 1) {
8177                         wdev_unlock(wdev);
8178                         err = -EBUSY;
8179                         goto out_free;
8180                 }
8181
8182                 chan = request->channels[0];
8183                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8184                         wdev_unlock(wdev);
8185                         err = -EBUSY;
8186                         goto out_free;
8187                 }
8188         }
8189         wdev_unlock(wdev);
8190
8191         i = 0;
8192         if (n_ssids) {
8193                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8194                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8195                                 err = -EINVAL;
8196                                 goto out_free;
8197                         }
8198                         request->ssids[i].ssid_len = nla_len(attr);
8199                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8200                         i++;
8201                 }
8202         }
8203
8204         if (info->attrs[NL80211_ATTR_IE]) {
8205                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8206                 memcpy((void *)request->ie,
8207                        nla_data(info->attrs[NL80211_ATTR_IE]),
8208                        request->ie_len);
8209         }
8210
8211         for (i = 0; i < NUM_NL80211_BANDS; i++)
8212                 if (wiphy->bands[i])
8213                         request->rates[i] =
8214                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
8215
8216         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8217                 nla_for_each_nested(attr,
8218                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8219                                     tmp) {
8220                         enum nl80211_band band = nla_type(attr);
8221
8222                         if (band < 0 || band >= NUM_NL80211_BANDS) {
8223                                 err = -EINVAL;
8224                                 goto out_free;
8225                         }
8226
8227                         if (!wiphy->bands[band])
8228                                 continue;
8229
8230                         err = ieee80211_get_ratemask(wiphy->bands[band],
8231                                                      nla_data(attr),
8232                                                      nla_len(attr),
8233                                                      &request->rates[band]);
8234                         if (err)
8235                                 goto out_free;
8236                 }
8237         }
8238
8239         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8240                 if (!wiphy_ext_feature_isset(wiphy,
8241                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
8242                         err = -EOPNOTSUPP;
8243                         goto out_free;
8244                 }
8245
8246                 request->duration =
8247                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8248                 request->duration_mandatory =
8249                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8250         }
8251
8252         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8253                                        false);
8254         if (err)
8255                 goto out_free;
8256
8257         request->no_cck =
8258                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8259
8260         /* Initial implementation used NL80211_ATTR_MAC to set the specific
8261          * BSSID to scan for. This was problematic because that same attribute
8262          * was already used for another purpose (local random MAC address). The
8263          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8264          * compatibility with older userspace components, also use the
8265          * NL80211_ATTR_MAC value here if it can be determined to be used for
8266          * the specific BSSID use case instead of the random MAC address
8267          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8268          */
8269         if (info->attrs[NL80211_ATTR_BSSID])
8270                 memcpy(request->bssid,
8271                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8272         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8273                  info->attrs[NL80211_ATTR_MAC])
8274                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8275                        ETH_ALEN);
8276         else
8277                 eth_broadcast_addr(request->bssid);
8278
8279         request->wdev = wdev;
8280         request->wiphy = &rdev->wiphy;
8281         request->scan_start = jiffies;
8282
8283         rdev->scan_req = request;
8284         err = cfg80211_scan(rdev);
8285
8286         if (err)
8287                 goto out_free;
8288
8289         nl80211_send_scan_start(rdev, wdev);
8290         if (wdev->netdev)
8291                 dev_hold(wdev->netdev);
8292
8293         return 0;
8294
8295  out_free:
8296         rdev->scan_req = NULL;
8297         kfree(request);
8298
8299         return err;
8300 }
8301
8302 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8303 {
8304         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8305         struct wireless_dev *wdev = info->user_ptr[1];
8306
8307         if (!rdev->ops->abort_scan)
8308                 return -EOPNOTSUPP;
8309
8310         if (rdev->scan_msg)
8311                 return 0;
8312
8313         if (!rdev->scan_req)
8314                 return -ENOENT;
8315
8316         rdev_abort_scan(rdev, wdev);
8317         return 0;
8318 }
8319
8320 static int
8321 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8322                                struct cfg80211_sched_scan_request *request,
8323                                struct nlattr **attrs)
8324 {
8325         int tmp, err, i = 0;
8326         struct nlattr *attr;
8327
8328         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8329                 u32 interval;
8330
8331                 /*
8332                  * If scan plans are not specified,
8333                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8334                  * case one scan plan will be set with the specified scan
8335                  * interval and infinite number of iterations.
8336                  */
8337                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8338                 if (!interval)
8339                         return -EINVAL;
8340
8341                 request->scan_plans[0].interval =
8342                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8343                 if (!request->scan_plans[0].interval)
8344                         return -EINVAL;
8345
8346                 if (request->scan_plans[0].interval >
8347                     wiphy->max_sched_scan_plan_interval)
8348                         request->scan_plans[0].interval =
8349                                 wiphy->max_sched_scan_plan_interval;
8350
8351                 return 0;
8352         }
8353
8354         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8355                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8356
8357                 if (WARN_ON(i >= n_plans))
8358                         return -EINVAL;
8359
8360                 err = nla_parse_nested_deprecated(plan,
8361                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8362                                                   attr, nl80211_plan_policy,
8363                                                   NULL);
8364                 if (err)
8365                         return err;
8366
8367                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8368                         return -EINVAL;
8369
8370                 request->scan_plans[i].interval =
8371                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8372                 if (!request->scan_plans[i].interval ||
8373                     request->scan_plans[i].interval >
8374                     wiphy->max_sched_scan_plan_interval)
8375                         return -EINVAL;
8376
8377                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8378                         request->scan_plans[i].iterations =
8379                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8380                         if (!request->scan_plans[i].iterations ||
8381                             (request->scan_plans[i].iterations >
8382                              wiphy->max_sched_scan_plan_iterations))
8383                                 return -EINVAL;
8384                 } else if (i < n_plans - 1) {
8385                         /*
8386                          * All scan plans but the last one must specify
8387                          * a finite number of iterations
8388                          */
8389                         return -EINVAL;
8390                 }
8391
8392                 i++;
8393         }
8394
8395         /*
8396          * The last scan plan must not specify the number of
8397          * iterations, it is supposed to run infinitely
8398          */
8399         if (request->scan_plans[n_plans - 1].iterations)
8400                 return  -EINVAL;
8401
8402         return 0;
8403 }
8404
8405 static int
8406 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8407                                        struct cfg80211_match_set *match_sets,
8408                                        struct nlattr *tb_band_rssi,
8409                                        s32 rssi_thold)
8410 {
8411         struct nlattr *attr;
8412         int i, tmp, ret = 0;
8413
8414         if (!wiphy_ext_feature_isset(wiphy,
8415                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8416                 if (tb_band_rssi)
8417                         ret = -EOPNOTSUPP;
8418                 else
8419                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8420                                 match_sets->per_band_rssi_thold[i] =
8421                                         NL80211_SCAN_RSSI_THOLD_OFF;
8422                 return ret;
8423         }
8424
8425         for (i = 0; i < NUM_NL80211_BANDS; i++)
8426                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8427
8428         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8429                 enum nl80211_band band = nla_type(attr);
8430
8431                 if (band < 0 || band >= NUM_NL80211_BANDS)
8432                         return -EINVAL;
8433
8434                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8435         }
8436
8437         return 0;
8438 }
8439
8440 static struct cfg80211_sched_scan_request *
8441 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8442                          struct nlattr **attrs, int max_match_sets)
8443 {
8444         struct cfg80211_sched_scan_request *request;
8445         struct nlattr *attr;
8446         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8447         enum nl80211_band band;
8448         size_t ie_len;
8449         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8450         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8451
8452         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8453                 n_channels = validate_scan_freqs(
8454                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8455                 if (!n_channels)
8456                         return ERR_PTR(-EINVAL);
8457         } else {
8458                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8459         }
8460
8461         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8462                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8463                                     tmp)
8464                         n_ssids++;
8465
8466         if (n_ssids > wiphy->max_sched_scan_ssids)
8467                 return ERR_PTR(-EINVAL);
8468
8469         /*
8470          * First, count the number of 'real' matchsets. Due to an issue with
8471          * the old implementation, matchsets containing only the RSSI attribute
8472          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8473          * RSSI for all matchsets, rather than their own matchset for reporting
8474          * all APs with a strong RSSI. This is needed to be compatible with
8475          * older userspace that treated a matchset with only the RSSI as the
8476          * global RSSI for all other matchsets - if there are other matchsets.
8477          */
8478         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8479                 nla_for_each_nested(attr,
8480                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8481                                     tmp) {
8482                         struct nlattr *rssi;
8483
8484                         err = nla_parse_nested_deprecated(tb,
8485                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8486                                                           attr,
8487                                                           nl80211_match_policy,
8488                                                           NULL);
8489                         if (err)
8490                                 return ERR_PTR(err);
8491
8492                         /* SSID and BSSID are mutually exclusive */
8493                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8494                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8495                                 return ERR_PTR(-EINVAL);
8496
8497                         /* add other standalone attributes here */
8498                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8499                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8500                                 n_match_sets++;
8501                                 continue;
8502                         }
8503                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8504                         if (rssi)
8505                                 default_match_rssi = nla_get_s32(rssi);
8506                 }
8507         }
8508
8509         /* However, if there's no other matchset, add the RSSI one */
8510         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8511                 n_match_sets = 1;
8512
8513         if (n_match_sets > max_match_sets)
8514                 return ERR_PTR(-EINVAL);
8515
8516         if (attrs[NL80211_ATTR_IE])
8517                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8518         else
8519                 ie_len = 0;
8520
8521         if (ie_len > wiphy->max_sched_scan_ie_len)
8522                 return ERR_PTR(-EINVAL);
8523
8524         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8525                 /*
8526                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8527                  * each scan plan already specifies its own interval
8528                  */
8529                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8530                         return ERR_PTR(-EINVAL);
8531
8532                 nla_for_each_nested(attr,
8533                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8534                         n_plans++;
8535         } else {
8536                 /*
8537                  * The scan interval attribute is kept for backward
8538                  * compatibility. If no scan plans are specified and sched scan
8539                  * interval is specified, one scan plan will be set with this
8540                  * scan interval and infinite number of iterations.
8541                  */
8542                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8543                         return ERR_PTR(-EINVAL);
8544
8545                 n_plans = 1;
8546         }
8547
8548         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8549                 return ERR_PTR(-EINVAL);
8550
8551         if (!wiphy_ext_feature_isset(
8552                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8553             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8554              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8555                 return ERR_PTR(-EINVAL);
8556
8557         request = kzalloc(sizeof(*request)
8558                         + sizeof(*request->ssids) * n_ssids
8559                         + sizeof(*request->match_sets) * n_match_sets
8560                         + sizeof(*request->scan_plans) * n_plans
8561                         + sizeof(*request->channels) * n_channels
8562                         + ie_len, GFP_KERNEL);
8563         if (!request)
8564                 return ERR_PTR(-ENOMEM);
8565
8566         if (n_ssids)
8567                 request->ssids = (void *)&request->channels[n_channels];
8568         request->n_ssids = n_ssids;
8569         if (ie_len) {
8570                 if (n_ssids)
8571                         request->ie = (void *)(request->ssids + n_ssids);
8572                 else
8573                         request->ie = (void *)(request->channels + n_channels);
8574         }
8575
8576         if (n_match_sets) {
8577                 if (request->ie)
8578                         request->match_sets = (void *)(request->ie + ie_len);
8579                 else if (n_ssids)
8580                         request->match_sets =
8581                                 (void *)(request->ssids + n_ssids);
8582                 else
8583                         request->match_sets =
8584                                 (void *)(request->channels + n_channels);
8585         }
8586         request->n_match_sets = n_match_sets;
8587
8588         if (n_match_sets)
8589                 request->scan_plans = (void *)(request->match_sets +
8590                                                n_match_sets);
8591         else if (request->ie)
8592                 request->scan_plans = (void *)(request->ie + ie_len);
8593         else if (n_ssids)
8594                 request->scan_plans = (void *)(request->ssids + n_ssids);
8595         else
8596                 request->scan_plans = (void *)(request->channels + n_channels);
8597
8598         request->n_scan_plans = n_plans;
8599
8600         i = 0;
8601         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8602                 /* user specified, bail out if channel not found */
8603                 nla_for_each_nested(attr,
8604                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8605                                     tmp) {
8606                         struct ieee80211_channel *chan;
8607
8608                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8609
8610                         if (!chan) {
8611                                 err = -EINVAL;
8612                                 goto out_free;
8613                         }
8614
8615                         /* ignore disabled channels */
8616                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8617                                 continue;
8618
8619                         request->channels[i] = chan;
8620                         i++;
8621                 }
8622         } else {
8623                 /* all channels */
8624                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8625                         int j;
8626
8627                         if (!wiphy->bands[band])
8628                                 continue;
8629                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8630                                 struct ieee80211_channel *chan;
8631
8632                                 chan = &wiphy->bands[band]->channels[j];
8633
8634                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8635                                         continue;
8636
8637                                 request->channels[i] = chan;
8638                                 i++;
8639                         }
8640                 }
8641         }
8642
8643         if (!i) {
8644                 err = -EINVAL;
8645                 goto out_free;
8646         }
8647
8648         request->n_channels = i;
8649
8650         i = 0;
8651         if (n_ssids) {
8652                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8653                                     tmp) {
8654                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8655                                 err = -EINVAL;
8656                                 goto out_free;
8657                         }
8658                         request->ssids[i].ssid_len = nla_len(attr);
8659                         memcpy(request->ssids[i].ssid, nla_data(attr),
8660                                nla_len(attr));
8661                         i++;
8662                 }
8663         }
8664
8665         i = 0;
8666         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8667                 nla_for_each_nested(attr,
8668                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8669                                     tmp) {
8670                         struct nlattr *ssid, *bssid, *rssi;
8671
8672                         err = nla_parse_nested_deprecated(tb,
8673                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8674                                                           attr,
8675                                                           nl80211_match_policy,
8676                                                           NULL);
8677                         if (err)
8678                                 goto out_free;
8679                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8680                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8681
8682                         if (!ssid && !bssid) {
8683                                 i++;
8684                                 continue;
8685                         }
8686
8687                         if (WARN_ON(i >= n_match_sets)) {
8688                                 /* this indicates a programming error,
8689                                  * the loop above should have verified
8690                                  * things properly
8691                                  */
8692                                 err = -EINVAL;
8693                                 goto out_free;
8694                         }
8695
8696                         if (ssid) {
8697                                 memcpy(request->match_sets[i].ssid.ssid,
8698                                        nla_data(ssid), nla_len(ssid));
8699                                 request->match_sets[i].ssid.ssid_len =
8700                                         nla_len(ssid);
8701                         }
8702                         if (bssid)
8703                                 memcpy(request->match_sets[i].bssid,
8704                                        nla_data(bssid), ETH_ALEN);
8705
8706                         /* special attribute - old implementation w/a */
8707                         request->match_sets[i].rssi_thold = default_match_rssi;
8708                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8709                         if (rssi)
8710                                 request->match_sets[i].rssi_thold =
8711                                         nla_get_s32(rssi);
8712
8713                         /* Parse per band RSSI attribute */
8714                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8715                                 &request->match_sets[i],
8716                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8717                                 request->match_sets[i].rssi_thold);
8718                         if (err)
8719                                 goto out_free;
8720
8721                         i++;
8722                 }
8723
8724                 /* there was no other matchset, so the RSSI one is alone */
8725                 if (i == 0 && n_match_sets)
8726                         request->match_sets[0].rssi_thold = default_match_rssi;
8727
8728                 request->min_rssi_thold = INT_MAX;
8729                 for (i = 0; i < n_match_sets; i++)
8730                         request->min_rssi_thold =
8731                                 min(request->match_sets[i].rssi_thold,
8732                                     request->min_rssi_thold);
8733         } else {
8734                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8735         }
8736
8737         if (ie_len) {
8738                 request->ie_len = ie_len;
8739                 memcpy((void *)request->ie,
8740                        nla_data(attrs[NL80211_ATTR_IE]),
8741                        request->ie_len);
8742         }
8743
8744         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8745         if (err)
8746                 goto out_free;
8747
8748         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8749                 request->delay =
8750                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8751
8752         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8753                 request->relative_rssi = nla_get_s8(
8754                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8755                 request->relative_rssi_set = true;
8756         }
8757
8758         if (request->relative_rssi_set &&
8759             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8760                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8761
8762                 rssi_adjust = nla_data(
8763                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8764                 request->rssi_adjust.band = rssi_adjust->band;
8765                 request->rssi_adjust.delta = rssi_adjust->delta;
8766                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8767                         err = -EINVAL;
8768                         goto out_free;
8769                 }
8770         }
8771
8772         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8773         if (err)
8774                 goto out_free;
8775
8776         request->scan_start = jiffies;
8777
8778         return request;
8779
8780 out_free:
8781         kfree(request);
8782         return ERR_PTR(err);
8783 }
8784
8785 static int nl80211_start_sched_scan(struct sk_buff *skb,
8786                                     struct genl_info *info)
8787 {
8788         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8789         struct net_device *dev = info->user_ptr[1];
8790         struct wireless_dev *wdev = dev->ieee80211_ptr;
8791         struct cfg80211_sched_scan_request *sched_scan_req;
8792         bool want_multi;
8793         int err;
8794
8795         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8796                 return -EOPNOTSUPP;
8797
8798         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8799         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8800         if (err)
8801                 return err;
8802
8803         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8804                                                   info->attrs,
8805                                                   rdev->wiphy.max_match_sets);
8806
8807         err = PTR_ERR_OR_ZERO(sched_scan_req);
8808         if (err)
8809                 goto out_err;
8810
8811         /* leave request id zero for legacy request
8812          * or if driver does not support multi-scheduled scan
8813          */
8814         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8815                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8816
8817         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8818         if (err)
8819                 goto out_free;
8820
8821         sched_scan_req->dev = dev;
8822         sched_scan_req->wiphy = &rdev->wiphy;
8823
8824         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8825                 sched_scan_req->owner_nlportid = info->snd_portid;
8826
8827         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8828
8829         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8830         return 0;
8831
8832 out_free:
8833         kfree(sched_scan_req);
8834 out_err:
8835         return err;
8836 }
8837
8838 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8839                                    struct genl_info *info)
8840 {
8841         struct cfg80211_sched_scan_request *req;
8842         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8843         u64 cookie;
8844
8845         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8846                 return -EOPNOTSUPP;
8847
8848         if (info->attrs[NL80211_ATTR_COOKIE]) {
8849                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8850                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8851         }
8852
8853         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8854                                      struct cfg80211_sched_scan_request,
8855                                      list);
8856         if (!req || req->reqid ||
8857             (req->owner_nlportid &&
8858              req->owner_nlportid != info->snd_portid))
8859                 return -ENOENT;
8860
8861         return cfg80211_stop_sched_scan_req(rdev, req, false);
8862 }
8863
8864 static int nl80211_start_radar_detection(struct sk_buff *skb,
8865                                          struct genl_info *info)
8866 {
8867         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8868         struct net_device *dev = info->user_ptr[1];
8869         struct wireless_dev *wdev = dev->ieee80211_ptr;
8870         struct wiphy *wiphy = wdev->wiphy;
8871         struct cfg80211_chan_def chandef;
8872         enum nl80211_dfs_regions dfs_region;
8873         unsigned int cac_time_ms;
8874         int err;
8875
8876         dfs_region = reg_get_dfs_region(wiphy);
8877         if (dfs_region == NL80211_DFS_UNSET)
8878                 return -EINVAL;
8879
8880         err = nl80211_parse_chandef(rdev, info, &chandef);
8881         if (err)
8882                 return err;
8883
8884         if (netif_carrier_ok(dev))
8885                 return -EBUSY;
8886
8887         if (wdev->cac_started)
8888                 return -EBUSY;
8889
8890         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8891         if (err < 0)
8892                 return err;
8893
8894         if (err == 0)
8895                 return -EINVAL;
8896
8897         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8898                 return -EINVAL;
8899
8900         /* CAC start is offloaded to HW and can't be started manually */
8901         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8902                 return -EOPNOTSUPP;
8903
8904         if (!rdev->ops->start_radar_detection)
8905                 return -EOPNOTSUPP;
8906
8907         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8908         if (WARN_ON(!cac_time_ms))
8909                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8910
8911         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8912         if (!err) {
8913                 wdev->chandef = chandef;
8914                 wdev->cac_started = true;
8915                 wdev->cac_start_time = jiffies;
8916                 wdev->cac_time_ms = cac_time_ms;
8917         }
8918         return err;
8919 }
8920
8921 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8922                                           struct genl_info *info)
8923 {
8924         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8925         struct net_device *dev = info->user_ptr[1];
8926         struct wireless_dev *wdev = dev->ieee80211_ptr;
8927         struct wiphy *wiphy = wdev->wiphy;
8928         struct cfg80211_chan_def chandef;
8929         enum nl80211_dfs_regions dfs_region;
8930         int err;
8931
8932         dfs_region = reg_get_dfs_region(wiphy);
8933         if (dfs_region == NL80211_DFS_UNSET) {
8934                 GENL_SET_ERR_MSG(info,
8935                                  "DFS Region is not set. Unexpected Radar indication");
8936                 return -EINVAL;
8937         }
8938
8939         err = nl80211_parse_chandef(rdev, info, &chandef);
8940         if (err) {
8941                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8942                 return err;
8943         }
8944
8945         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8946         if (err < 0) {
8947                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8948                 return err;
8949         }
8950
8951         if (err == 0) {
8952                 GENL_SET_ERR_MSG(info,
8953                                  "Unexpected Radar indication for chandef/iftype");
8954                 return -EINVAL;
8955         }
8956
8957         /* Do not process this notification if radar is already detected
8958          * by kernel on this channel, and return success.
8959          */
8960         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8961                 return 0;
8962
8963         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8964
8965         cfg80211_sched_dfs_chan_update(rdev);
8966
8967         rdev->radar_chandef = chandef;
8968
8969         /* Propagate this notification to other radios as well */
8970         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8971
8972         return 0;
8973 }
8974
8975 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8976 {
8977         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8978         struct net_device *dev = info->user_ptr[1];
8979         struct wireless_dev *wdev = dev->ieee80211_ptr;
8980         struct cfg80211_csa_settings params;
8981         /* csa_attrs is defined static to avoid waste of stack size - this
8982          * function is called under RTNL lock, so this should not be a problem.
8983          */
8984         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8985         int err;
8986         bool need_new_beacon = false;
8987         bool need_handle_dfs_flag = true;
8988         int len, i;
8989         u32 cs_count;
8990
8991         if (!rdev->ops->channel_switch ||
8992             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8993                 return -EOPNOTSUPP;
8994
8995         switch (dev->ieee80211_ptr->iftype) {
8996         case NL80211_IFTYPE_AP:
8997         case NL80211_IFTYPE_P2P_GO:
8998                 need_new_beacon = true;
8999                 /* For all modes except AP the handle_dfs flag needs to be
9000                  * supplied to tell the kernel that userspace will handle radar
9001                  * events when they happen. Otherwise a switch to a channel
9002                  * requiring DFS will be rejected.
9003                  */
9004                 need_handle_dfs_flag = false;
9005
9006                 /* useless if AP is not running */
9007                 if (!wdev->beacon_interval)
9008                         return -ENOTCONN;
9009                 break;
9010         case NL80211_IFTYPE_ADHOC:
9011                 if (!wdev->ssid_len)
9012                         return -ENOTCONN;
9013                 break;
9014         case NL80211_IFTYPE_MESH_POINT:
9015                 if (!wdev->mesh_id_len)
9016                         return -ENOTCONN;
9017                 break;
9018         default:
9019                 return -EOPNOTSUPP;
9020         }
9021
9022         memset(&params, 0, sizeof(params));
9023         params.beacon_csa.ftm_responder = -1;
9024
9025         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9026             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9027                 return -EINVAL;
9028
9029         /* only important for AP, IBSS and mesh create IEs internally */
9030         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9031                 return -EINVAL;
9032
9033         /* Even though the attribute is u32, the specification says
9034          * u8, so let's make sure we don't overflow.
9035          */
9036         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9037         if (cs_count > 255)
9038                 return -EINVAL;
9039
9040         params.count = cs_count;
9041
9042         if (!need_new_beacon)
9043                 goto skip_beacons;
9044
9045         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9046         if (err)
9047                 return err;
9048
9049         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9050                                           info->attrs[NL80211_ATTR_CSA_IES],
9051                                           nl80211_policy, info->extack);
9052         if (err)
9053                 return err;
9054
9055         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9056         if (err)
9057                 return err;
9058
9059         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON])
9060                 return -EINVAL;
9061
9062         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9063         if (!len || (len % sizeof(u16)))
9064                 return -EINVAL;
9065
9066         params.n_counter_offsets_beacon = len / sizeof(u16);
9067         if (rdev->wiphy.max_num_csa_counters &&
9068             (params.n_counter_offsets_beacon >
9069              rdev->wiphy.max_num_csa_counters))
9070                 return -EINVAL;
9071
9072         params.counter_offsets_beacon =
9073                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9074
9075         /* sanity checks - counters should fit and be the same */
9076         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9077                 u16 offset = params.counter_offsets_beacon[i];
9078
9079                 if (offset >= params.beacon_csa.tail_len)
9080                         return -EINVAL;
9081
9082                 if (params.beacon_csa.tail[offset] != params.count)
9083                         return -EINVAL;
9084         }
9085
9086         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9087                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9088                 if (!len || (len % sizeof(u16)))
9089                         return -EINVAL;
9090
9091                 params.n_counter_offsets_presp = len / sizeof(u16);
9092                 if (rdev->wiphy.max_num_csa_counters &&
9093                     (params.n_counter_offsets_presp >
9094                      rdev->wiphy.max_num_csa_counters))
9095                         return -EINVAL;
9096
9097                 params.counter_offsets_presp =
9098                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9099
9100                 /* sanity checks - counters should fit and be the same */
9101                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9102                         u16 offset = params.counter_offsets_presp[i];
9103
9104                         if (offset >= params.beacon_csa.probe_resp_len)
9105                                 return -EINVAL;
9106
9107                         if (params.beacon_csa.probe_resp[offset] !=
9108                             params.count)
9109                                 return -EINVAL;
9110                 }
9111         }
9112
9113 skip_beacons:
9114         err = nl80211_parse_chandef(rdev, info, &params.chandef);
9115         if (err)
9116                 return err;
9117
9118         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9119                                            wdev->iftype))
9120                 return -EINVAL;
9121
9122         err = cfg80211_chandef_dfs_required(wdev->wiphy,
9123                                             &params.chandef,
9124                                             wdev->iftype);
9125         if (err < 0)
9126                 return err;
9127
9128         if (err > 0) {
9129                 params.radar_required = true;
9130                 if (need_handle_dfs_flag &&
9131                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9132                         return -EINVAL;
9133                 }
9134         }
9135
9136         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9137                 params.block_tx = true;
9138
9139         wdev_lock(wdev);
9140         err = rdev_channel_switch(rdev, dev, &params);
9141         wdev_unlock(wdev);
9142
9143         return err;
9144 }
9145
9146 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9147                             u32 seq, int flags,
9148                             struct cfg80211_registered_device *rdev,
9149                             struct wireless_dev *wdev,
9150                             struct cfg80211_internal_bss *intbss)
9151 {
9152         struct cfg80211_bss *res = &intbss->pub;
9153         const struct cfg80211_bss_ies *ies;
9154         void *hdr;
9155         struct nlattr *bss;
9156
9157         ASSERT_WDEV_LOCK(wdev);
9158
9159         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9160                              NL80211_CMD_NEW_SCAN_RESULTS);
9161         if (!hdr)
9162                 return -1;
9163
9164         genl_dump_check_consistent(cb, hdr);
9165
9166         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9167                 goto nla_put_failure;
9168         if (wdev->netdev &&
9169             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9170                 goto nla_put_failure;
9171         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9172                               NL80211_ATTR_PAD))
9173                 goto nla_put_failure;
9174
9175         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9176         if (!bss)
9177                 goto nla_put_failure;
9178         if ((!is_zero_ether_addr(res->bssid) &&
9179              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9180                 goto nla_put_failure;
9181
9182         rcu_read_lock();
9183         /* indicate whether we have probe response data or not */
9184         if (rcu_access_pointer(res->proberesp_ies) &&
9185             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9186                 goto fail_unlock_rcu;
9187
9188         /* this pointer prefers to be pointed to probe response data
9189          * but is always valid
9190          */
9191         ies = rcu_dereference(res->ies);
9192         if (ies) {
9193                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9194                                       NL80211_BSS_PAD))
9195                         goto fail_unlock_rcu;
9196                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9197                                         ies->len, ies->data))
9198                         goto fail_unlock_rcu;
9199         }
9200
9201         /* and this pointer is always (unless driver didn't know) beacon data */
9202         ies = rcu_dereference(res->beacon_ies);
9203         if (ies && ies->from_beacon) {
9204                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9205                                       NL80211_BSS_PAD))
9206                         goto fail_unlock_rcu;
9207                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9208                                         ies->len, ies->data))
9209                         goto fail_unlock_rcu;
9210         }
9211         rcu_read_unlock();
9212
9213         if (res->beacon_interval &&
9214             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9215                 goto nla_put_failure;
9216         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9217             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9218             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9219                         res->channel->freq_offset) ||
9220             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9221             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9222                         jiffies_to_msecs(jiffies - intbss->ts)))
9223                 goto nla_put_failure;
9224
9225         if (intbss->parent_tsf &&
9226             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9227                                intbss->parent_tsf, NL80211_BSS_PAD) ||
9228              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9229                      intbss->parent_bssid)))
9230                 goto nla_put_failure;
9231
9232         if (intbss->ts_boottime &&
9233             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9234                               intbss->ts_boottime, NL80211_BSS_PAD))
9235                 goto nla_put_failure;
9236
9237         if (!nl80211_put_signal(msg, intbss->pub.chains,
9238                                 intbss->pub.chain_signal,
9239                                 NL80211_BSS_CHAIN_SIGNAL))
9240                 goto nla_put_failure;
9241
9242         switch (rdev->wiphy.signal_type) {
9243         case CFG80211_SIGNAL_TYPE_MBM:
9244                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9245                         goto nla_put_failure;
9246                 break;
9247         case CFG80211_SIGNAL_TYPE_UNSPEC:
9248                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9249                         goto nla_put_failure;
9250                 break;
9251         default:
9252                 break;
9253         }
9254
9255         switch (wdev->iftype) {
9256         case NL80211_IFTYPE_P2P_CLIENT:
9257         case NL80211_IFTYPE_STATION:
9258                 if (intbss == wdev->current_bss &&
9259                     nla_put_u32(msg, NL80211_BSS_STATUS,
9260                                 NL80211_BSS_STATUS_ASSOCIATED))
9261                         goto nla_put_failure;
9262                 break;
9263         case NL80211_IFTYPE_ADHOC:
9264                 if (intbss == wdev->current_bss &&
9265                     nla_put_u32(msg, NL80211_BSS_STATUS,
9266                                 NL80211_BSS_STATUS_IBSS_JOINED))
9267                         goto nla_put_failure;
9268                 break;
9269         default:
9270                 break;
9271         }
9272
9273         nla_nest_end(msg, bss);
9274
9275         genlmsg_end(msg, hdr);
9276         return 0;
9277
9278  fail_unlock_rcu:
9279         rcu_read_unlock();
9280  nla_put_failure:
9281         genlmsg_cancel(msg, hdr);
9282         return -EMSGSIZE;
9283 }
9284
9285 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9286 {
9287         struct cfg80211_registered_device *rdev;
9288         struct cfg80211_internal_bss *scan;
9289         struct wireless_dev *wdev;
9290         int start = cb->args[2], idx = 0;
9291         int err;
9292
9293         rtnl_lock();
9294         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9295         if (err) {
9296                 rtnl_unlock();
9297                 return err;
9298         }
9299
9300         wdev_lock(wdev);
9301         spin_lock_bh(&rdev->bss_lock);
9302
9303         /*
9304          * dump_scan will be called multiple times to break up the scan results
9305          * into multiple messages.  It is unlikely that any more bss-es will be
9306          * expired after the first call, so only call only call this on the
9307          * first dump_scan invocation.
9308          */
9309         if (start == 0)
9310                 cfg80211_bss_expire(rdev);
9311
9312         cb->seq = rdev->bss_generation;
9313
9314         list_for_each_entry(scan, &rdev->bss_list, list) {
9315                 if (++idx <= start)
9316                         continue;
9317                 if (nl80211_send_bss(skb, cb,
9318                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9319                                 rdev, wdev, scan) < 0) {
9320                         idx--;
9321                         break;
9322                 }
9323         }
9324
9325         spin_unlock_bh(&rdev->bss_lock);
9326         wdev_unlock(wdev);
9327
9328         cb->args[2] = idx;
9329         rtnl_unlock();
9330
9331         return skb->len;
9332 }
9333
9334 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9335                                int flags, struct net_device *dev,
9336                                bool allow_radio_stats,
9337                                struct survey_info *survey)
9338 {
9339         void *hdr;
9340         struct nlattr *infoattr;
9341
9342         /* skip radio stats if userspace didn't request them */
9343         if (!survey->channel && !allow_radio_stats)
9344                 return 0;
9345
9346         hdr = nl80211hdr_put(msg, portid, seq, flags,
9347                              NL80211_CMD_NEW_SURVEY_RESULTS);
9348         if (!hdr)
9349                 return -ENOMEM;
9350
9351         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9352                 goto nla_put_failure;
9353
9354         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9355         if (!infoattr)
9356                 goto nla_put_failure;
9357
9358         if (survey->channel &&
9359             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9360                         survey->channel->center_freq))
9361                 goto nla_put_failure;
9362
9363         if (survey->channel && survey->channel->freq_offset &&
9364             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9365                         survey->channel->freq_offset))
9366                 goto nla_put_failure;
9367
9368         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9369             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9370                 goto nla_put_failure;
9371         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9372             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9373                 goto nla_put_failure;
9374         if ((survey->filled & SURVEY_INFO_TIME) &&
9375             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9376                         survey->time, NL80211_SURVEY_INFO_PAD))
9377                 goto nla_put_failure;
9378         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9379             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9380                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9381                 goto nla_put_failure;
9382         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9383             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9384                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9385                 goto nla_put_failure;
9386         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9387             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9388                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9389                 goto nla_put_failure;
9390         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9391             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9392                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9393                 goto nla_put_failure;
9394         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9395             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9396                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9397                 goto nla_put_failure;
9398         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9399             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9400                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9401                 goto nla_put_failure;
9402
9403         nla_nest_end(msg, infoattr);
9404
9405         genlmsg_end(msg, hdr);
9406         return 0;
9407
9408  nla_put_failure:
9409         genlmsg_cancel(msg, hdr);
9410         return -EMSGSIZE;
9411 }
9412
9413 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9414 {
9415         struct nlattr **attrbuf;
9416         struct survey_info survey;
9417         struct cfg80211_registered_device *rdev;
9418         struct wireless_dev *wdev;
9419         int survey_idx = cb->args[2];
9420         int res;
9421         bool radio_stats;
9422
9423         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9424         if (!attrbuf)
9425                 return -ENOMEM;
9426
9427         rtnl_lock();
9428         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9429         if (res)
9430                 goto out_err;
9431
9432         /* prepare_wdev_dump parsed the attributes */
9433         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9434
9435         if (!wdev->netdev) {
9436                 res = -EINVAL;
9437                 goto out_err;
9438         }
9439
9440         if (!rdev->ops->dump_survey) {
9441                 res = -EOPNOTSUPP;
9442                 goto out_err;
9443         }
9444
9445         while (1) {
9446                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9447                 if (res == -ENOENT)
9448                         break;
9449                 if (res)
9450                         goto out_err;
9451
9452                 /* don't send disabled channels, but do send non-channel data */
9453                 if (survey.channel &&
9454                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9455                         survey_idx++;
9456                         continue;
9457                 }
9458
9459                 if (nl80211_send_survey(skb,
9460                                 NETLINK_CB(cb->skb).portid,
9461                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9462                                 wdev->netdev, radio_stats, &survey) < 0)
9463                         goto out;
9464                 survey_idx++;
9465         }
9466
9467  out:
9468         cb->args[2] = survey_idx;
9469         res = skb->len;
9470  out_err:
9471         kfree(attrbuf);
9472         rtnl_unlock();
9473         return res;
9474 }
9475
9476 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9477 {
9478         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9479                                   NL80211_WPA_VERSION_2 |
9480                                   NL80211_WPA_VERSION_3));
9481 }
9482
9483 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9484 {
9485         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9486         struct net_device *dev = info->user_ptr[1];
9487         struct ieee80211_channel *chan;
9488         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9489         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9490         enum nl80211_auth_type auth_type;
9491         struct key_parse key;
9492         bool local_state_change;
9493         u32 freq;
9494
9495         if (!info->attrs[NL80211_ATTR_MAC])
9496                 return -EINVAL;
9497
9498         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9499                 return -EINVAL;
9500
9501         if (!info->attrs[NL80211_ATTR_SSID])
9502                 return -EINVAL;
9503
9504         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9505                 return -EINVAL;
9506
9507         err = nl80211_parse_key(info, &key);
9508         if (err)
9509                 return err;
9510
9511         if (key.idx >= 0) {
9512                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9513                         return -EINVAL;
9514                 if (!key.p.key || !key.p.key_len)
9515                         return -EINVAL;
9516                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9517                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9518                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9519                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9520                         return -EINVAL;
9521                 if (key.idx > 3)
9522                         return -EINVAL;
9523         } else {
9524                 key.p.key_len = 0;
9525                 key.p.key = NULL;
9526         }
9527
9528         if (key.idx >= 0) {
9529                 int i;
9530                 bool ok = false;
9531
9532                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9533                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9534                                 ok = true;
9535                                 break;
9536                         }
9537                 }
9538                 if (!ok)
9539                         return -EINVAL;
9540         }
9541
9542         if (!rdev->ops->auth)
9543                 return -EOPNOTSUPP;
9544
9545         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9546             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9547                 return -EOPNOTSUPP;
9548
9549         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9550         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9551         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9552                 freq +=
9553                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9554
9555         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9556         if (!chan)
9557                 return -EINVAL;
9558
9559         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9560         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9561
9562         if (info->attrs[NL80211_ATTR_IE]) {
9563                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9564                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9565         }
9566
9567         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9568         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9569                 return -EINVAL;
9570
9571         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9572              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9573              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9574              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9575             !info->attrs[NL80211_ATTR_AUTH_DATA])
9576                 return -EINVAL;
9577
9578         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9579                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9580                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9581                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9582                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9583                         return -EINVAL;
9584                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9585                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9586         }
9587
9588         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9589
9590         /*
9591          * Since we no longer track auth state, ignore
9592          * requests to only change local state.
9593          */
9594         if (local_state_change)
9595                 return 0;
9596
9597         wdev_lock(dev->ieee80211_ptr);
9598         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9599                                  ssid, ssid_len, ie, ie_len,
9600                                  key.p.key, key.p.key_len, key.idx,
9601                                  auth_data, auth_data_len);
9602         wdev_unlock(dev->ieee80211_ptr);
9603         return err;
9604 }
9605
9606 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9607                                      struct genl_info *info)
9608 {
9609         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9610                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9611                 return -EINVAL;
9612         }
9613
9614         if (!rdev->ops->tx_control_port ||
9615             !wiphy_ext_feature_isset(&rdev->wiphy,
9616                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9617                 return -EOPNOTSUPP;
9618
9619         return 0;
9620 }
9621
9622 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9623                                    struct genl_info *info,
9624                                    struct cfg80211_crypto_settings *settings,
9625                                    int cipher_limit)
9626 {
9627         memset(settings, 0, sizeof(*settings));
9628
9629         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9630
9631         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9632                 u16 proto;
9633
9634                 proto = nla_get_u16(
9635                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9636                 settings->control_port_ethertype = cpu_to_be16(proto);
9637                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9638                     proto != ETH_P_PAE)
9639                         return -EINVAL;
9640                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9641                         settings->control_port_no_encrypt = true;
9642         } else
9643                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9644
9645         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9646                 int r = validate_pae_over_nl80211(rdev, info);
9647
9648                 if (r < 0)
9649                         return r;
9650
9651                 settings->control_port_over_nl80211 = true;
9652
9653                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9654                         settings->control_port_no_preauth = true;
9655         }
9656
9657         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9658                 void *data;
9659                 int len, i;
9660
9661                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9662                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9663                 settings->n_ciphers_pairwise = len / sizeof(u32);
9664
9665                 if (len % sizeof(u32))
9666                         return -EINVAL;
9667
9668                 if (settings->n_ciphers_pairwise > cipher_limit)
9669                         return -EINVAL;
9670
9671                 memcpy(settings->ciphers_pairwise, data, len);
9672
9673                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9674                         if (!cfg80211_supported_cipher_suite(
9675                                         &rdev->wiphy,
9676                                         settings->ciphers_pairwise[i]))
9677                                 return -EINVAL;
9678         }
9679
9680         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9681                 settings->cipher_group =
9682                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9683                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9684                                                      settings->cipher_group))
9685                         return -EINVAL;
9686         }
9687
9688         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9689                 settings->wpa_versions =
9690                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9691                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9692                         return -EINVAL;
9693         }
9694
9695         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9696                 void *data;
9697                 int len;
9698
9699                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9700                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9701                 settings->n_akm_suites = len / sizeof(u32);
9702
9703                 if (len % sizeof(u32))
9704                         return -EINVAL;
9705
9706                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9707                         return -EINVAL;
9708
9709                 memcpy(settings->akm_suites, data, len);
9710         }
9711
9712         if (info->attrs[NL80211_ATTR_PMK]) {
9713                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9714                         return -EINVAL;
9715                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9716                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9717                     !wiphy_ext_feature_isset(&rdev->wiphy,
9718                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9719                         return -EINVAL;
9720                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9721         }
9722
9723         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9724                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9725                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9726                     !wiphy_ext_feature_isset(&rdev->wiphy,
9727                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9728                         return -EINVAL;
9729                 settings->sae_pwd =
9730                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9731                 settings->sae_pwd_len =
9732                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9733         }
9734
9735         return 0;
9736 }
9737
9738 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9739 {
9740         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9741         struct net_device *dev = info->user_ptr[1];
9742         struct ieee80211_channel *chan;
9743         struct cfg80211_assoc_request req = {};
9744         const u8 *bssid, *ssid;
9745         int err, ssid_len = 0;
9746         u32 freq;
9747
9748         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9749             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9750                 return -EPERM;
9751
9752         if (!info->attrs[NL80211_ATTR_MAC] ||
9753             !info->attrs[NL80211_ATTR_SSID] ||
9754             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9755                 return -EINVAL;
9756
9757         if (!rdev->ops->assoc)
9758                 return -EOPNOTSUPP;
9759
9760         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9761             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9762                 return -EOPNOTSUPP;
9763
9764         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9765
9766         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9767         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9768                 freq +=
9769                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9770         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9771         if (!chan)
9772                 return -EINVAL;
9773
9774         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9775         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9776
9777         if (info->attrs[NL80211_ATTR_IE]) {
9778                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9779                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9780         }
9781
9782         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9783                 enum nl80211_mfp mfp =
9784                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9785                 if (mfp == NL80211_MFP_REQUIRED)
9786                         req.use_mfp = true;
9787                 else if (mfp != NL80211_MFP_NO)
9788                         return -EINVAL;
9789         }
9790
9791         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9792                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9793
9794         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9795                 req.flags |= ASSOC_REQ_DISABLE_HT;
9796
9797         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9798                 memcpy(&req.ht_capa_mask,
9799                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9800                        sizeof(req.ht_capa_mask));
9801
9802         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9803                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9804                         return -EINVAL;
9805                 memcpy(&req.ht_capa,
9806                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9807                        sizeof(req.ht_capa));
9808         }
9809
9810         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9811                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9812
9813         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9814                 memcpy(&req.vht_capa_mask,
9815                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9816                        sizeof(req.vht_capa_mask));
9817
9818         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9819                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9820                         return -EINVAL;
9821                 memcpy(&req.vht_capa,
9822                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9823                        sizeof(req.vht_capa));
9824         }
9825
9826         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9827                 if (!((rdev->wiphy.features &
9828                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9829                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9830                     !wiphy_ext_feature_isset(&rdev->wiphy,
9831                                              NL80211_EXT_FEATURE_RRM))
9832                         return -EINVAL;
9833                 req.flags |= ASSOC_REQ_USE_RRM;
9834         }
9835
9836         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9837                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9838                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9839                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9840                         return -EINVAL;
9841                 req.fils_nonces =
9842                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9843         }
9844
9845         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
9846                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
9847                         return -EINVAL;
9848                 memcpy(&req.s1g_capa_mask,
9849                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
9850                        sizeof(req.s1g_capa_mask));
9851         }
9852
9853         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
9854                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
9855                         return -EINVAL;
9856                 memcpy(&req.s1g_capa,
9857                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
9858                        sizeof(req.s1g_capa));
9859         }
9860
9861         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9862         if (!err) {
9863                 wdev_lock(dev->ieee80211_ptr);
9864
9865                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9866                                           ssid, ssid_len, &req);
9867
9868                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9869                         dev->ieee80211_ptr->conn_owner_nlportid =
9870                                 info->snd_portid;
9871                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9872                                bssid, ETH_ALEN);
9873                 }
9874
9875                 wdev_unlock(dev->ieee80211_ptr);
9876         }
9877
9878         return err;
9879 }
9880
9881 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9882 {
9883         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9884         struct net_device *dev = info->user_ptr[1];
9885         const u8 *ie = NULL, *bssid;
9886         int ie_len = 0, err;
9887         u16 reason_code;
9888         bool local_state_change;
9889
9890         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9891             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9892                 return -EPERM;
9893
9894         if (!info->attrs[NL80211_ATTR_MAC])
9895                 return -EINVAL;
9896
9897         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9898                 return -EINVAL;
9899
9900         if (!rdev->ops->deauth)
9901                 return -EOPNOTSUPP;
9902
9903         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9904             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9905                 return -EOPNOTSUPP;
9906
9907         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9908
9909         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9910         if (reason_code == 0) {
9911                 /* Reason Code 0 is reserved */
9912                 return -EINVAL;
9913         }
9914
9915         if (info->attrs[NL80211_ATTR_IE]) {
9916                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9917                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9918         }
9919
9920         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9921
9922         wdev_lock(dev->ieee80211_ptr);
9923         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9924                                    local_state_change);
9925         wdev_unlock(dev->ieee80211_ptr);
9926         return err;
9927 }
9928
9929 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9930 {
9931         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9932         struct net_device *dev = info->user_ptr[1];
9933         const u8 *ie = NULL, *bssid;
9934         int ie_len = 0, err;
9935         u16 reason_code;
9936         bool local_state_change;
9937
9938         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9939             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9940                 return -EPERM;
9941
9942         if (!info->attrs[NL80211_ATTR_MAC])
9943                 return -EINVAL;
9944
9945         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9946                 return -EINVAL;
9947
9948         if (!rdev->ops->disassoc)
9949                 return -EOPNOTSUPP;
9950
9951         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9952             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9953                 return -EOPNOTSUPP;
9954
9955         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9956
9957         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9958         if (reason_code == 0) {
9959                 /* Reason Code 0 is reserved */
9960                 return -EINVAL;
9961         }
9962
9963         if (info->attrs[NL80211_ATTR_IE]) {
9964                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9965                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9966         }
9967
9968         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9969
9970         wdev_lock(dev->ieee80211_ptr);
9971         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9972                                      local_state_change);
9973         wdev_unlock(dev->ieee80211_ptr);
9974         return err;
9975 }
9976
9977 static bool
9978 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9979                          int mcast_rate[NUM_NL80211_BANDS],
9980                          int rateval)
9981 {
9982         struct wiphy *wiphy = &rdev->wiphy;
9983         bool found = false;
9984         int band, i;
9985
9986         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9987                 struct ieee80211_supported_band *sband;
9988
9989                 sband = wiphy->bands[band];
9990                 if (!sband)
9991                         continue;
9992
9993                 for (i = 0; i < sband->n_bitrates; i++) {
9994                         if (sband->bitrates[i].bitrate == rateval) {
9995                                 mcast_rate[band] = i + 1;
9996                                 found = true;
9997                                 break;
9998                         }
9999                 }
10000         }
10001
10002         return found;
10003 }
10004
10005 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10006 {
10007         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10008         struct net_device *dev = info->user_ptr[1];
10009         struct cfg80211_ibss_params ibss;
10010         struct wiphy *wiphy;
10011         struct cfg80211_cached_keys *connkeys = NULL;
10012         int err;
10013
10014         memset(&ibss, 0, sizeof(ibss));
10015
10016         if (!info->attrs[NL80211_ATTR_SSID] ||
10017             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10018                 return -EINVAL;
10019
10020         ibss.beacon_interval = 100;
10021
10022         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10023                 ibss.beacon_interval =
10024                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10025
10026         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10027                                            ibss.beacon_interval);
10028         if (err)
10029                 return err;
10030
10031         if (!rdev->ops->join_ibss)
10032                 return -EOPNOTSUPP;
10033
10034         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10035                 return -EOPNOTSUPP;
10036
10037         wiphy = &rdev->wiphy;
10038
10039         if (info->attrs[NL80211_ATTR_MAC]) {
10040                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10041
10042                 if (!is_valid_ether_addr(ibss.bssid))
10043                         return -EINVAL;
10044         }
10045         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10046         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10047
10048         if (info->attrs[NL80211_ATTR_IE]) {
10049                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10050                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10051         }
10052
10053         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10054         if (err)
10055                 return err;
10056
10057         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10058                                      NL80211_IFTYPE_ADHOC))
10059                 return -EINVAL;
10060
10061         switch (ibss.chandef.width) {
10062         case NL80211_CHAN_WIDTH_5:
10063         case NL80211_CHAN_WIDTH_10:
10064         case NL80211_CHAN_WIDTH_20_NOHT:
10065                 break;
10066         case NL80211_CHAN_WIDTH_20:
10067         case NL80211_CHAN_WIDTH_40:
10068                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10069                         return -EINVAL;
10070                 break;
10071         case NL80211_CHAN_WIDTH_80:
10072         case NL80211_CHAN_WIDTH_80P80:
10073         case NL80211_CHAN_WIDTH_160:
10074                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10075                         return -EINVAL;
10076                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10077                                              NL80211_EXT_FEATURE_VHT_IBSS))
10078                         return -EINVAL;
10079                 break;
10080         default:
10081                 return -EINVAL;
10082         }
10083
10084         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10085         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10086
10087         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10088                 u8 *rates =
10089                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10090                 int n_rates =
10091                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10092                 struct ieee80211_supported_band *sband =
10093                         wiphy->bands[ibss.chandef.chan->band];
10094
10095                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10096                                              &ibss.basic_rates);
10097                 if (err)
10098                         return err;
10099         }
10100
10101         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10102                 memcpy(&ibss.ht_capa_mask,
10103                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10104                        sizeof(ibss.ht_capa_mask));
10105
10106         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10107                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10108                         return -EINVAL;
10109                 memcpy(&ibss.ht_capa,
10110                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10111                        sizeof(ibss.ht_capa));
10112         }
10113
10114         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10115             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10116                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10117                 return -EINVAL;
10118
10119         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10120                 bool no_ht = false;
10121
10122                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10123                 if (IS_ERR(connkeys))
10124                         return PTR_ERR(connkeys);
10125
10126                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10127                     no_ht) {
10128                         kfree_sensitive(connkeys);
10129                         return -EINVAL;
10130                 }
10131         }
10132
10133         ibss.control_port =
10134                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10135
10136         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10137                 int r = validate_pae_over_nl80211(rdev, info);
10138
10139                 if (r < 0) {
10140                         kfree_sensitive(connkeys);
10141                         return r;
10142                 }
10143
10144                 ibss.control_port_over_nl80211 = true;
10145         }
10146
10147         ibss.userspace_handles_dfs =
10148                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10149
10150         wdev_lock(dev->ieee80211_ptr);
10151         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10152         if (err)
10153                 kfree_sensitive(connkeys);
10154         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10155                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10156         wdev_unlock(dev->ieee80211_ptr);
10157
10158         return err;
10159 }
10160
10161 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10162 {
10163         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10164         struct net_device *dev = info->user_ptr[1];
10165
10166         if (!rdev->ops->leave_ibss)
10167                 return -EOPNOTSUPP;
10168
10169         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10170                 return -EOPNOTSUPP;
10171
10172         return cfg80211_leave_ibss(rdev, dev, false);
10173 }
10174
10175 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10176 {
10177         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10178         struct net_device *dev = info->user_ptr[1];
10179         int mcast_rate[NUM_NL80211_BANDS];
10180         u32 nla_rate;
10181         int err;
10182
10183         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10184             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10185             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10186                 return -EOPNOTSUPP;
10187
10188         if (!rdev->ops->set_mcast_rate)
10189                 return -EOPNOTSUPP;
10190
10191         memset(mcast_rate, 0, sizeof(mcast_rate));
10192
10193         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10194                 return -EINVAL;
10195
10196         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10197         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10198                 return -EINVAL;
10199
10200         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10201
10202         return err;
10203 }
10204
10205 static struct sk_buff *
10206 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10207                             struct wireless_dev *wdev, int approxlen,
10208                             u32 portid, u32 seq, enum nl80211_commands cmd,
10209                             enum nl80211_attrs attr,
10210                             const struct nl80211_vendor_cmd_info *info,
10211                             gfp_t gfp)
10212 {
10213         struct sk_buff *skb;
10214         void *hdr;
10215         struct nlattr *data;
10216
10217         skb = nlmsg_new(approxlen + 100, gfp);
10218         if (!skb)
10219                 return NULL;
10220
10221         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10222         if (!hdr) {
10223                 kfree_skb(skb);
10224                 return NULL;
10225         }
10226
10227         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10228                 goto nla_put_failure;
10229
10230         if (info) {
10231                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10232                                 info->vendor_id))
10233                         goto nla_put_failure;
10234                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10235                                 info->subcmd))
10236                         goto nla_put_failure;
10237         }
10238
10239         if (wdev) {
10240                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10241                                       wdev_id(wdev), NL80211_ATTR_PAD))
10242                         goto nla_put_failure;
10243                 if (wdev->netdev &&
10244                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10245                                 wdev->netdev->ifindex))
10246                         goto nla_put_failure;
10247         }
10248
10249         data = nla_nest_start_noflag(skb, attr);
10250         if (!data)
10251                 goto nla_put_failure;
10252
10253         ((void **)skb->cb)[0] = rdev;
10254         ((void **)skb->cb)[1] = hdr;
10255         ((void **)skb->cb)[2] = data;
10256
10257         return skb;
10258
10259  nla_put_failure:
10260         kfree_skb(skb);
10261         return NULL;
10262 }
10263
10264 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10265                                            struct wireless_dev *wdev,
10266                                            enum nl80211_commands cmd,
10267                                            enum nl80211_attrs attr,
10268                                            unsigned int portid,
10269                                            int vendor_event_idx,
10270                                            int approxlen, gfp_t gfp)
10271 {
10272         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10273         const struct nl80211_vendor_cmd_info *info;
10274
10275         switch (cmd) {
10276         case NL80211_CMD_TESTMODE:
10277                 if (WARN_ON(vendor_event_idx != -1))
10278                         return NULL;
10279                 info = NULL;
10280                 break;
10281         case NL80211_CMD_VENDOR:
10282                 if (WARN_ON(vendor_event_idx < 0 ||
10283                             vendor_event_idx >= wiphy->n_vendor_events))
10284                         return NULL;
10285                 info = &wiphy->vendor_events[vendor_event_idx];
10286                 break;
10287         default:
10288                 WARN_ON(1);
10289                 return NULL;
10290         }
10291
10292         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10293                                            cmd, attr, info, gfp);
10294 }
10295 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10296
10297 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10298 {
10299         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10300         void *hdr = ((void **)skb->cb)[1];
10301         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10302         struct nlattr *data = ((void **)skb->cb)[2];
10303         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10304
10305         /* clear CB data for netlink core to own from now on */
10306         memset(skb->cb, 0, sizeof(skb->cb));
10307
10308         nla_nest_end(skb, data);
10309         genlmsg_end(skb, hdr);
10310
10311         if (nlhdr->nlmsg_pid) {
10312                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10313                                 nlhdr->nlmsg_pid);
10314         } else {
10315                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10316                         mcgrp = NL80211_MCGRP_VENDOR;
10317
10318                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10319                                         skb, 0, mcgrp, gfp);
10320         }
10321 }
10322 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10323
10324 #ifdef CONFIG_NL80211_TESTMODE
10325 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10326 {
10327         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10328         struct wireless_dev *wdev =
10329                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
10330         int err;
10331
10332         if (!rdev->ops->testmode_cmd)
10333                 return -EOPNOTSUPP;
10334
10335         if (IS_ERR(wdev)) {
10336                 err = PTR_ERR(wdev);
10337                 if (err != -EINVAL)
10338                         return err;
10339                 wdev = NULL;
10340         } else if (wdev->wiphy != &rdev->wiphy) {
10341                 return -EINVAL;
10342         }
10343
10344         if (!info->attrs[NL80211_ATTR_TESTDATA])
10345                 return -EINVAL;
10346
10347         rdev->cur_cmd_info = info;
10348         err = rdev_testmode_cmd(rdev, wdev,
10349                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10350                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10351         rdev->cur_cmd_info = NULL;
10352
10353         return err;
10354 }
10355
10356 static int nl80211_testmode_dump(struct sk_buff *skb,
10357                                  struct netlink_callback *cb)
10358 {
10359         struct cfg80211_registered_device *rdev;
10360         struct nlattr **attrbuf = NULL;
10361         int err;
10362         long phy_idx;
10363         void *data = NULL;
10364         int data_len = 0;
10365
10366         rtnl_lock();
10367
10368         if (cb->args[0]) {
10369                 /*
10370                  * 0 is a valid index, but not valid for args[0],
10371                  * so we need to offset by 1.
10372                  */
10373                 phy_idx = cb->args[0] - 1;
10374
10375                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10376                 if (!rdev) {
10377                         err = -ENOENT;
10378                         goto out_err;
10379                 }
10380         } else {
10381                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10382                                   GFP_KERNEL);
10383                 if (!attrbuf) {
10384                         err = -ENOMEM;
10385                         goto out_err;
10386                 }
10387
10388                 err = nlmsg_parse_deprecated(cb->nlh,
10389                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10390                                              attrbuf, nl80211_fam.maxattr,
10391                                              nl80211_policy, NULL);
10392                 if (err)
10393                         goto out_err;
10394
10395                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10396                 if (IS_ERR(rdev)) {
10397                         err = PTR_ERR(rdev);
10398                         goto out_err;
10399                 }
10400                 phy_idx = rdev->wiphy_idx;
10401
10402                 if (attrbuf[NL80211_ATTR_TESTDATA])
10403                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10404         }
10405
10406         if (cb->args[1]) {
10407                 data = nla_data((void *)cb->args[1]);
10408                 data_len = nla_len((void *)cb->args[1]);
10409         }
10410
10411         if (!rdev->ops->testmode_dump) {
10412                 err = -EOPNOTSUPP;
10413                 goto out_err;
10414         }
10415
10416         while (1) {
10417                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10418                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10419                                            NL80211_CMD_TESTMODE);
10420                 struct nlattr *tmdata;
10421
10422                 if (!hdr)
10423                         break;
10424
10425                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10426                         genlmsg_cancel(skb, hdr);
10427                         break;
10428                 }
10429
10430                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10431                 if (!tmdata) {
10432                         genlmsg_cancel(skb, hdr);
10433                         break;
10434                 }
10435                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10436                 nla_nest_end(skb, tmdata);
10437
10438                 if (err == -ENOBUFS || err == -ENOENT) {
10439                         genlmsg_cancel(skb, hdr);
10440                         break;
10441                 } else if (err) {
10442                         genlmsg_cancel(skb, hdr);
10443                         goto out_err;
10444                 }
10445
10446                 genlmsg_end(skb, hdr);
10447         }
10448
10449         err = skb->len;
10450         /* see above */
10451         cb->args[0] = phy_idx + 1;
10452  out_err:
10453         kfree(attrbuf);
10454         rtnl_unlock();
10455         return err;
10456 }
10457 #endif
10458
10459 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10460 {
10461         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10462         struct net_device *dev = info->user_ptr[1];
10463         struct cfg80211_connect_params connect;
10464         struct wiphy *wiphy;
10465         struct cfg80211_cached_keys *connkeys = NULL;
10466         u32 freq = 0;
10467         int err;
10468
10469         memset(&connect, 0, sizeof(connect));
10470
10471         if (!info->attrs[NL80211_ATTR_SSID] ||
10472             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10473                 return -EINVAL;
10474
10475         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10476                 connect.auth_type =
10477                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10478                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10479                                              NL80211_CMD_CONNECT))
10480                         return -EINVAL;
10481         } else
10482                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10483
10484         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10485
10486         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10487             !wiphy_ext_feature_isset(&rdev->wiphy,
10488                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10489                 return -EINVAL;
10490         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10491
10492         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10493                                       NL80211_MAX_NR_CIPHER_SUITES);
10494         if (err)
10495                 return err;
10496
10497         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10498             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10499                 return -EOPNOTSUPP;
10500
10501         wiphy = &rdev->wiphy;
10502
10503         connect.bg_scan_period = -1;
10504         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10505                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10506                 connect.bg_scan_period =
10507                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10508         }
10509
10510         if (info->attrs[NL80211_ATTR_MAC])
10511                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10512         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10513                 connect.bssid_hint =
10514                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10515         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10516         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10517
10518         if (info->attrs[NL80211_ATTR_IE]) {
10519                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10520                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10521         }
10522
10523         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10524                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10525                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10526                     !wiphy_ext_feature_isset(&rdev->wiphy,
10527                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10528                         return -EOPNOTSUPP;
10529         } else {
10530                 connect.mfp = NL80211_MFP_NO;
10531         }
10532
10533         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10534                 connect.prev_bssid =
10535                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10536
10537         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10538                 freq = MHZ_TO_KHZ(nla_get_u32(
10539                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10540         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10541                 freq +=
10542                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10543
10544         if (freq) {
10545                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10546                 if (!connect.channel)
10547                         return -EINVAL;
10548         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10549                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10550                 freq = MHZ_TO_KHZ(freq);
10551                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10552                 if (!connect.channel_hint)
10553                         return -EINVAL;
10554         }
10555
10556         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10557                 connect.edmg.channels =
10558                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10559
10560                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10561                         connect.edmg.bw_config =
10562                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10563         }
10564
10565         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10566                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10567                 if (IS_ERR(connkeys))
10568                         return PTR_ERR(connkeys);
10569         }
10570
10571         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10572                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10573
10574         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10575                 memcpy(&connect.ht_capa_mask,
10576                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10577                        sizeof(connect.ht_capa_mask));
10578
10579         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10580                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10581                         kfree_sensitive(connkeys);
10582                         return -EINVAL;
10583                 }
10584                 memcpy(&connect.ht_capa,
10585                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10586                        sizeof(connect.ht_capa));
10587         }
10588
10589         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10590                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10591
10592         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10593                 memcpy(&connect.vht_capa_mask,
10594                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10595                        sizeof(connect.vht_capa_mask));
10596
10597         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10598                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10599                         kfree_sensitive(connkeys);
10600                         return -EINVAL;
10601                 }
10602                 memcpy(&connect.vht_capa,
10603                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10604                        sizeof(connect.vht_capa));
10605         }
10606
10607         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10608                 if (!((rdev->wiphy.features &
10609                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10610                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10611                     !wiphy_ext_feature_isset(&rdev->wiphy,
10612                                              NL80211_EXT_FEATURE_RRM)) {
10613                         kfree_sensitive(connkeys);
10614                         return -EINVAL;
10615                 }
10616                 connect.flags |= ASSOC_REQ_USE_RRM;
10617         }
10618
10619         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10620         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10621                 kfree_sensitive(connkeys);
10622                 return -EOPNOTSUPP;
10623         }
10624
10625         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10626                 /* bss selection makes no sense if bssid is set */
10627                 if (connect.bssid) {
10628                         kfree_sensitive(connkeys);
10629                         return -EINVAL;
10630                 }
10631
10632                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10633                                        wiphy, &connect.bss_select);
10634                 if (err) {
10635                         kfree_sensitive(connkeys);
10636                         return err;
10637                 }
10638         }
10639
10640         if (wiphy_ext_feature_isset(&rdev->wiphy,
10641                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10642             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10643             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10644             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10645             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10646                 connect.fils_erp_username =
10647                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10648                 connect.fils_erp_username_len =
10649                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10650                 connect.fils_erp_realm =
10651                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10652                 connect.fils_erp_realm_len =
10653                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10654                 connect.fils_erp_next_seq_num =
10655                         nla_get_u16(
10656                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10657                 connect.fils_erp_rrk =
10658                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10659                 connect.fils_erp_rrk_len =
10660                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10661         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10662                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10663                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10664                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10665                 kfree_sensitive(connkeys);
10666                 return -EINVAL;
10667         }
10668
10669         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10670                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10671                         kfree_sensitive(connkeys);
10672                         GENL_SET_ERR_MSG(info,
10673                                          "external auth requires connection ownership");
10674                         return -EINVAL;
10675                 }
10676                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10677         }
10678
10679         wdev_lock(dev->ieee80211_ptr);
10680
10681         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10682                                connect.prev_bssid);
10683         if (err)
10684                 kfree_sensitive(connkeys);
10685
10686         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10687                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10688                 if (connect.bssid)
10689                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10690                                connect.bssid, ETH_ALEN);
10691                 else
10692                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10693         }
10694
10695         wdev_unlock(dev->ieee80211_ptr);
10696
10697         return err;
10698 }
10699
10700 static int nl80211_update_connect_params(struct sk_buff *skb,
10701                                          struct genl_info *info)
10702 {
10703         struct cfg80211_connect_params connect = {};
10704         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10705         struct net_device *dev = info->user_ptr[1];
10706         struct wireless_dev *wdev = dev->ieee80211_ptr;
10707         bool fils_sk_offload;
10708         u32 auth_type;
10709         u32 changed = 0;
10710         int ret;
10711
10712         if (!rdev->ops->update_connect_params)
10713                 return -EOPNOTSUPP;
10714
10715         if (info->attrs[NL80211_ATTR_IE]) {
10716                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10717                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10718                 changed |= UPDATE_ASSOC_IES;
10719         }
10720
10721         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10722                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10723
10724         /*
10725          * when driver supports fils-sk offload all attributes must be
10726          * provided. So the else covers "fils-sk-not-all" and
10727          * "no-fils-sk-any".
10728          */
10729         if (fils_sk_offload &&
10730             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10731             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10732             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10733             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10734                 connect.fils_erp_username =
10735                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10736                 connect.fils_erp_username_len =
10737                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10738                 connect.fils_erp_realm =
10739                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10740                 connect.fils_erp_realm_len =
10741                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10742                 connect.fils_erp_next_seq_num =
10743                         nla_get_u16(
10744                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10745                 connect.fils_erp_rrk =
10746                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10747                 connect.fils_erp_rrk_len =
10748                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10749                 changed |= UPDATE_FILS_ERP_INFO;
10750         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10751                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10752                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10753                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10754                 return -EINVAL;
10755         }
10756
10757         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10758                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10759                 if (!nl80211_valid_auth_type(rdev, auth_type,
10760                                              NL80211_CMD_CONNECT))
10761                         return -EINVAL;
10762
10763                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10764                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10765                         return -EINVAL;
10766
10767                 connect.auth_type = auth_type;
10768                 changed |= UPDATE_AUTH_TYPE;
10769         }
10770
10771         wdev_lock(dev->ieee80211_ptr);
10772         if (!wdev->current_bss)
10773                 ret = -ENOLINK;
10774         else
10775                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10776         wdev_unlock(dev->ieee80211_ptr);
10777
10778         return ret;
10779 }
10780
10781 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10782 {
10783         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10784         struct net_device *dev = info->user_ptr[1];
10785         u16 reason;
10786         int ret;
10787
10788         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10789             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10790                 return -EPERM;
10791
10792         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10793                 reason = WLAN_REASON_DEAUTH_LEAVING;
10794         else
10795                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10796
10797         if (reason == 0)
10798                 return -EINVAL;
10799
10800         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10801             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10802                 return -EOPNOTSUPP;
10803
10804         wdev_lock(dev->ieee80211_ptr);
10805         ret = cfg80211_disconnect(rdev, dev, reason, true);
10806         wdev_unlock(dev->ieee80211_ptr);
10807         return ret;
10808 }
10809
10810 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10811 {
10812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10813         struct net *net;
10814         int err;
10815
10816         if (info->attrs[NL80211_ATTR_PID]) {
10817                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10818
10819                 net = get_net_ns_by_pid(pid);
10820         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10821                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10822
10823                 net = get_net_ns_by_fd(fd);
10824         } else {
10825                 return -EINVAL;
10826         }
10827
10828         if (IS_ERR(net))
10829                 return PTR_ERR(net);
10830
10831         err = 0;
10832
10833         /* check if anything to do */
10834         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10835                 err = cfg80211_switch_netns(rdev, net);
10836
10837         put_net(net);
10838         return err;
10839 }
10840
10841 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10842 {
10843         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10844         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10845                         struct cfg80211_pmksa *pmksa) = NULL;
10846         struct net_device *dev = info->user_ptr[1];
10847         struct cfg80211_pmksa pmksa;
10848
10849         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10850
10851         if (!info->attrs[NL80211_ATTR_PMKID])
10852                 return -EINVAL;
10853
10854         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10855
10856         if (info->attrs[NL80211_ATTR_MAC]) {
10857                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10858         } else if (info->attrs[NL80211_ATTR_SSID] &&
10859                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10860                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10861                     info->attrs[NL80211_ATTR_PMK])) {
10862                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10863                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10864                 pmksa.cache_id =
10865                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10866         } else {
10867                 return -EINVAL;
10868         }
10869         if (info->attrs[NL80211_ATTR_PMK]) {
10870                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10871                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10872         }
10873
10874         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
10875                 pmksa.pmk_lifetime =
10876                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
10877
10878         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
10879                 pmksa.pmk_reauth_threshold =
10880                         nla_get_u8(
10881                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
10882
10883         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10884             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10885             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10886               wiphy_ext_feature_isset(&rdev->wiphy,
10887                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10888                 return -EOPNOTSUPP;
10889
10890         switch (info->genlhdr->cmd) {
10891         case NL80211_CMD_SET_PMKSA:
10892                 rdev_ops = rdev->ops->set_pmksa;
10893                 break;
10894         case NL80211_CMD_DEL_PMKSA:
10895                 rdev_ops = rdev->ops->del_pmksa;
10896                 break;
10897         default:
10898                 WARN_ON(1);
10899                 break;
10900         }
10901
10902         if (!rdev_ops)
10903                 return -EOPNOTSUPP;
10904
10905         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10906 }
10907
10908 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10909 {
10910         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10911         struct net_device *dev = info->user_ptr[1];
10912
10913         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10914             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10915                 return -EOPNOTSUPP;
10916
10917         if (!rdev->ops->flush_pmksa)
10918                 return -EOPNOTSUPP;
10919
10920         return rdev_flush_pmksa(rdev, dev);
10921 }
10922
10923 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10924 {
10925         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10926         struct net_device *dev = info->user_ptr[1];
10927         u8 action_code, dialog_token;
10928         u32 peer_capability = 0;
10929         u16 status_code;
10930         u8 *peer;
10931         bool initiator;
10932
10933         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10934             !rdev->ops->tdls_mgmt)
10935                 return -EOPNOTSUPP;
10936
10937         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10938             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10939             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10940             !info->attrs[NL80211_ATTR_IE] ||
10941             !info->attrs[NL80211_ATTR_MAC])
10942                 return -EINVAL;
10943
10944         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10945         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10946         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10947         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10948         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10949         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10950                 peer_capability =
10951                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10952
10953         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10954                               dialog_token, status_code, peer_capability,
10955                               initiator,
10956                               nla_data(info->attrs[NL80211_ATTR_IE]),
10957                               nla_len(info->attrs[NL80211_ATTR_IE]));
10958 }
10959
10960 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10961 {
10962         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10963         struct net_device *dev = info->user_ptr[1];
10964         enum nl80211_tdls_operation operation;
10965         u8 *peer;
10966
10967         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10968             !rdev->ops->tdls_oper)
10969                 return -EOPNOTSUPP;
10970
10971         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10972             !info->attrs[NL80211_ATTR_MAC])
10973                 return -EINVAL;
10974
10975         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10976         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10977
10978         return rdev_tdls_oper(rdev, dev, peer, operation);
10979 }
10980
10981 static int nl80211_remain_on_channel(struct sk_buff *skb,
10982                                      struct genl_info *info)
10983 {
10984         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10985         struct wireless_dev *wdev = info->user_ptr[1];
10986         struct cfg80211_chan_def chandef;
10987         const struct cfg80211_chan_def *compat_chandef;
10988         struct sk_buff *msg;
10989         void *hdr;
10990         u64 cookie;
10991         u32 duration;
10992         int err;
10993
10994         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10995             !info->attrs[NL80211_ATTR_DURATION])
10996                 return -EINVAL;
10997
10998         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10999
11000         if (!rdev->ops->remain_on_channel ||
11001             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11002                 return -EOPNOTSUPP;
11003
11004         /*
11005          * We should be on that channel for at least a minimum amount of
11006          * time (10ms) but no longer than the driver supports.
11007          */
11008         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11009             duration > rdev->wiphy.max_remain_on_channel_duration)
11010                 return -EINVAL;
11011
11012         err = nl80211_parse_chandef(rdev, info, &chandef);
11013         if (err)
11014                 return err;
11015
11016         wdev_lock(wdev);
11017         if (!cfg80211_off_channel_oper_allowed(wdev) &&
11018             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11019                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11020                                                              &chandef);
11021                 if (compat_chandef != &chandef) {
11022                         wdev_unlock(wdev);
11023                         return -EBUSY;
11024                 }
11025         }
11026         wdev_unlock(wdev);
11027
11028         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11029         if (!msg)
11030                 return -ENOMEM;
11031
11032         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11033                              NL80211_CMD_REMAIN_ON_CHANNEL);
11034         if (!hdr) {
11035                 err = -ENOBUFS;
11036                 goto free_msg;
11037         }
11038
11039         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11040                                      duration, &cookie);
11041
11042         if (err)
11043                 goto free_msg;
11044
11045         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11046                               NL80211_ATTR_PAD))
11047                 goto nla_put_failure;
11048
11049         genlmsg_end(msg, hdr);
11050
11051         return genlmsg_reply(msg, info);
11052
11053  nla_put_failure:
11054         err = -ENOBUFS;
11055  free_msg:
11056         nlmsg_free(msg);
11057         return err;
11058 }
11059
11060 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11061                                             struct genl_info *info)
11062 {
11063         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11064         struct wireless_dev *wdev = info->user_ptr[1];
11065         u64 cookie;
11066
11067         if (!info->attrs[NL80211_ATTR_COOKIE])
11068                 return -EINVAL;
11069
11070         if (!rdev->ops->cancel_remain_on_channel)
11071                 return -EOPNOTSUPP;
11072
11073         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11074
11075         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11076 }
11077
11078 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11079                                        struct genl_info *info)
11080 {
11081         struct cfg80211_bitrate_mask mask;
11082         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11083         struct net_device *dev = info->user_ptr[1];
11084         int err;
11085
11086         if (!rdev->ops->set_bitrate_mask)
11087                 return -EOPNOTSUPP;
11088
11089         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11090                                             NL80211_ATTR_TX_RATES, &mask,
11091                                             dev);
11092         if (err)
11093                 return err;
11094
11095         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11096 }
11097
11098 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11099 {
11100         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11101         struct wireless_dev *wdev = info->user_ptr[1];
11102         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11103
11104         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11105                 return -EINVAL;
11106
11107         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11108                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11109
11110         switch (wdev->iftype) {
11111         case NL80211_IFTYPE_STATION:
11112         case NL80211_IFTYPE_ADHOC:
11113         case NL80211_IFTYPE_P2P_CLIENT:
11114         case NL80211_IFTYPE_AP:
11115         case NL80211_IFTYPE_AP_VLAN:
11116         case NL80211_IFTYPE_MESH_POINT:
11117         case NL80211_IFTYPE_P2P_GO:
11118         case NL80211_IFTYPE_P2P_DEVICE:
11119                 break;
11120         case NL80211_IFTYPE_NAN:
11121         default:
11122                 return -EOPNOTSUPP;
11123         }
11124
11125         /* not much point in registering if we can't reply */
11126         if (!rdev->ops->mgmt_tx)
11127                 return -EOPNOTSUPP;
11128
11129         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11130             !wiphy_ext_feature_isset(&rdev->wiphy,
11131                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11132                 GENL_SET_ERR_MSG(info,
11133                                  "multicast RX registrations are not supported");
11134                 return -EOPNOTSUPP;
11135         }
11136
11137         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11138                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11139                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11140                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11141                                            info->extack);
11142 }
11143
11144 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11145 {
11146         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11147         struct wireless_dev *wdev = info->user_ptr[1];
11148         struct cfg80211_chan_def chandef;
11149         int err;
11150         void *hdr = NULL;
11151         u64 cookie;
11152         struct sk_buff *msg = NULL;
11153         struct cfg80211_mgmt_tx_params params = {
11154                 .dont_wait_for_ack =
11155                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11156         };
11157
11158         if (!info->attrs[NL80211_ATTR_FRAME])
11159                 return -EINVAL;
11160
11161         if (!rdev->ops->mgmt_tx)
11162                 return -EOPNOTSUPP;
11163
11164         switch (wdev->iftype) {
11165         case NL80211_IFTYPE_P2P_DEVICE:
11166                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11167                         return -EINVAL;
11168         case NL80211_IFTYPE_STATION:
11169         case NL80211_IFTYPE_ADHOC:
11170         case NL80211_IFTYPE_P2P_CLIENT:
11171         case NL80211_IFTYPE_AP:
11172         case NL80211_IFTYPE_AP_VLAN:
11173         case NL80211_IFTYPE_MESH_POINT:
11174         case NL80211_IFTYPE_P2P_GO:
11175                 break;
11176         case NL80211_IFTYPE_NAN:
11177         default:
11178                 return -EOPNOTSUPP;
11179         }
11180
11181         if (info->attrs[NL80211_ATTR_DURATION]) {
11182                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11183                         return -EINVAL;
11184                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11185
11186                 /*
11187                  * We should wait on the channel for at least a minimum amount
11188                  * of time (10ms) but no longer than the driver supports.
11189                  */
11190                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11191                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
11192                         return -EINVAL;
11193         }
11194
11195         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11196
11197         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11198                 return -EINVAL;
11199
11200         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11201
11202         /* get the channel if any has been specified, otherwise pass NULL to
11203          * the driver. The latter will use the current one
11204          */
11205         chandef.chan = NULL;
11206         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11207                 err = nl80211_parse_chandef(rdev, info, &chandef);
11208                 if (err)
11209                         return err;
11210         }
11211
11212         if (!chandef.chan && params.offchan)
11213                 return -EINVAL;
11214
11215         wdev_lock(wdev);
11216         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11217                 wdev_unlock(wdev);
11218                 return -EBUSY;
11219         }
11220         wdev_unlock(wdev);
11221
11222         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11223         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11224
11225         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11226                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11227                 int i;
11228
11229                 if (len % sizeof(u16))
11230                         return -EINVAL;
11231
11232                 params.n_csa_offsets = len / sizeof(u16);
11233                 params.csa_offsets =
11234                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11235
11236                 /* check that all the offsets fit the frame */
11237                 for (i = 0; i < params.n_csa_offsets; i++) {
11238                         if (params.csa_offsets[i] >= params.len)
11239                                 return -EINVAL;
11240                 }
11241         }
11242
11243         if (!params.dont_wait_for_ack) {
11244                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11245                 if (!msg)
11246                         return -ENOMEM;
11247
11248                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11249                                      NL80211_CMD_FRAME);
11250                 if (!hdr) {
11251                         err = -ENOBUFS;
11252                         goto free_msg;
11253                 }
11254         }
11255
11256         params.chan = chandef.chan;
11257         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
11258         if (err)
11259                 goto free_msg;
11260
11261         if (msg) {
11262                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11263                                       NL80211_ATTR_PAD))
11264                         goto nla_put_failure;
11265
11266                 genlmsg_end(msg, hdr);
11267                 return genlmsg_reply(msg, info);
11268         }
11269
11270         return 0;
11271
11272  nla_put_failure:
11273         err = -ENOBUFS;
11274  free_msg:
11275         nlmsg_free(msg);
11276         return err;
11277 }
11278
11279 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11280 {
11281         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11282         struct wireless_dev *wdev = info->user_ptr[1];
11283         u64 cookie;
11284
11285         if (!info->attrs[NL80211_ATTR_COOKIE])
11286                 return -EINVAL;
11287
11288         if (!rdev->ops->mgmt_tx_cancel_wait)
11289                 return -EOPNOTSUPP;
11290
11291         switch (wdev->iftype) {
11292         case NL80211_IFTYPE_STATION:
11293         case NL80211_IFTYPE_ADHOC:
11294         case NL80211_IFTYPE_P2P_CLIENT:
11295         case NL80211_IFTYPE_AP:
11296         case NL80211_IFTYPE_AP_VLAN:
11297         case NL80211_IFTYPE_P2P_GO:
11298         case NL80211_IFTYPE_P2P_DEVICE:
11299                 break;
11300         case NL80211_IFTYPE_NAN:
11301         default:
11302                 return -EOPNOTSUPP;
11303         }
11304
11305         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11306
11307         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11308 }
11309
11310 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11311 {
11312         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11313         struct wireless_dev *wdev;
11314         struct net_device *dev = info->user_ptr[1];
11315         u8 ps_state;
11316         bool state;
11317         int err;
11318
11319         if (!info->attrs[NL80211_ATTR_PS_STATE])
11320                 return -EINVAL;
11321
11322         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11323
11324         wdev = dev->ieee80211_ptr;
11325
11326         if (!rdev->ops->set_power_mgmt)
11327                 return -EOPNOTSUPP;
11328
11329         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11330
11331         if (state == wdev->ps)
11332                 return 0;
11333
11334         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11335         if (!err)
11336                 wdev->ps = state;
11337         return err;
11338 }
11339
11340 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11341 {
11342         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11343         enum nl80211_ps_state ps_state;
11344         struct wireless_dev *wdev;
11345         struct net_device *dev = info->user_ptr[1];
11346         struct sk_buff *msg;
11347         void *hdr;
11348         int err;
11349
11350         wdev = dev->ieee80211_ptr;
11351
11352         if (!rdev->ops->set_power_mgmt)
11353                 return -EOPNOTSUPP;
11354
11355         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11356         if (!msg)
11357                 return -ENOMEM;
11358
11359         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11360                              NL80211_CMD_GET_POWER_SAVE);
11361         if (!hdr) {
11362                 err = -ENOBUFS;
11363                 goto free_msg;
11364         }
11365
11366         if (wdev->ps)
11367                 ps_state = NL80211_PS_ENABLED;
11368         else
11369                 ps_state = NL80211_PS_DISABLED;
11370
11371         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11372                 goto nla_put_failure;
11373
11374         genlmsg_end(msg, hdr);
11375         return genlmsg_reply(msg, info);
11376
11377  nla_put_failure:
11378         err = -ENOBUFS;
11379  free_msg:
11380         nlmsg_free(msg);
11381         return err;
11382 }
11383
11384 static const struct nla_policy
11385 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11386         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11387         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11388         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11389         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11390         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11391         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11392         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11393 };
11394
11395 static int nl80211_set_cqm_txe(struct genl_info *info,
11396                                u32 rate, u32 pkts, u32 intvl)
11397 {
11398         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11399         struct net_device *dev = info->user_ptr[1];
11400         struct wireless_dev *wdev = dev->ieee80211_ptr;
11401
11402         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11403                 return -EINVAL;
11404
11405         if (!rdev->ops->set_cqm_txe_config)
11406                 return -EOPNOTSUPP;
11407
11408         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11409             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11410                 return -EOPNOTSUPP;
11411
11412         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11413 }
11414
11415 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11416                                     struct net_device *dev)
11417 {
11418         struct wireless_dev *wdev = dev->ieee80211_ptr;
11419         s32 last, low, high;
11420         u32 hyst;
11421         int i, n, low_index;
11422         int err;
11423
11424         /* RSSI reporting disabled? */
11425         if (!wdev->cqm_config)
11426                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11427
11428         /*
11429          * Obtain current RSSI value if possible, if not and no RSSI threshold
11430          * event has been received yet, we should receive an event after a
11431          * connection is established and enough beacons received to calculate
11432          * the average.
11433          */
11434         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11435             rdev->ops->get_station) {
11436                 struct station_info sinfo = {};
11437                 u8 *mac_addr;
11438
11439                 mac_addr = wdev->current_bss->pub.bssid;
11440
11441                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11442                 if (err)
11443                         return err;
11444
11445                 cfg80211_sinfo_release_content(&sinfo);
11446                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11447                         wdev->cqm_config->last_rssi_event_value =
11448                                 (s8) sinfo.rx_beacon_signal_avg;
11449         }
11450
11451         last = wdev->cqm_config->last_rssi_event_value;
11452         hyst = wdev->cqm_config->rssi_hyst;
11453         n = wdev->cqm_config->n_rssi_thresholds;
11454
11455         for (i = 0; i < n; i++) {
11456                 i = array_index_nospec(i, n);
11457                 if (last < wdev->cqm_config->rssi_thresholds[i])
11458                         break;
11459         }
11460
11461         low_index = i - 1;
11462         if (low_index >= 0) {
11463                 low_index = array_index_nospec(low_index, n);
11464                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11465         } else {
11466                 low = S32_MIN;
11467         }
11468         if (i < n) {
11469                 i = array_index_nospec(i, n);
11470                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11471         } else {
11472                 high = S32_MAX;
11473         }
11474
11475         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11476 }
11477
11478 static int nl80211_set_cqm_rssi(struct genl_info *info,
11479                                 const s32 *thresholds, int n_thresholds,
11480                                 u32 hysteresis)
11481 {
11482         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11483         struct net_device *dev = info->user_ptr[1];
11484         struct wireless_dev *wdev = dev->ieee80211_ptr;
11485         int i, err;
11486         s32 prev = S32_MIN;
11487
11488         /* Check all values negative and sorted */
11489         for (i = 0; i < n_thresholds; i++) {
11490                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11491                         return -EINVAL;
11492
11493                 prev = thresholds[i];
11494         }
11495
11496         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11497             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11498                 return -EOPNOTSUPP;
11499
11500         wdev_lock(wdev);
11501         cfg80211_cqm_config_free(wdev);
11502         wdev_unlock(wdev);
11503
11504         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11505                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11506                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11507
11508                 return rdev_set_cqm_rssi_config(rdev, dev,
11509                                                 thresholds[0], hysteresis);
11510         }
11511
11512         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11513                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11514                 return -EOPNOTSUPP;
11515
11516         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11517                 n_thresholds = 0;
11518
11519         wdev_lock(wdev);
11520         if (n_thresholds) {
11521                 struct cfg80211_cqm_config *cqm_config;
11522
11523                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11524                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11525                 if (!cqm_config) {
11526                         err = -ENOMEM;
11527                         goto unlock;
11528                 }
11529
11530                 cqm_config->rssi_hyst = hysteresis;
11531                 cqm_config->n_rssi_thresholds = n_thresholds;
11532                 memcpy(cqm_config->rssi_thresholds, thresholds,
11533                        n_thresholds * sizeof(s32));
11534
11535                 wdev->cqm_config = cqm_config;
11536         }
11537
11538         err = cfg80211_cqm_rssi_update(rdev, dev);
11539
11540 unlock:
11541         wdev_unlock(wdev);
11542
11543         return err;
11544 }
11545
11546 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11547 {
11548         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11549         struct nlattr *cqm;
11550         int err;
11551
11552         cqm = info->attrs[NL80211_ATTR_CQM];
11553         if (!cqm)
11554                 return -EINVAL;
11555
11556         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11557                                           nl80211_attr_cqm_policy,
11558                                           info->extack);
11559         if (err)
11560                 return err;
11561
11562         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11563             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11564                 const s32 *thresholds =
11565                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11566                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11567                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11568
11569                 if (len % 4)
11570                         return -EINVAL;
11571
11572                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11573                                             hysteresis);
11574         }
11575
11576         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11577             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11578             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11579                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11580                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11581                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11582
11583                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11584         }
11585
11586         return -EINVAL;
11587 }
11588
11589 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11590 {
11591         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11592         struct net_device *dev = info->user_ptr[1];
11593         struct ocb_setup setup = {};
11594         int err;
11595
11596         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11597         if (err)
11598                 return err;
11599
11600         return cfg80211_join_ocb(rdev, dev, &setup);
11601 }
11602
11603 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11604 {
11605         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11606         struct net_device *dev = info->user_ptr[1];
11607
11608         return cfg80211_leave_ocb(rdev, dev);
11609 }
11610
11611 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11612 {
11613         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11614         struct net_device *dev = info->user_ptr[1];
11615         struct mesh_config cfg;
11616         struct mesh_setup setup;
11617         int err;
11618
11619         /* start with default */
11620         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11621         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11622
11623         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11624                 /* and parse parameters if given */
11625                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11626                 if (err)
11627                         return err;
11628         }
11629
11630         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11631             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11632                 return -EINVAL;
11633
11634         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11635         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11636
11637         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11638             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11639                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11640                         return -EINVAL;
11641
11642         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11643                 setup.beacon_interval =
11644                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11645
11646                 err = cfg80211_validate_beacon_int(rdev,
11647                                                    NL80211_IFTYPE_MESH_POINT,
11648                                                    setup.beacon_interval);
11649                 if (err)
11650                         return err;
11651         }
11652
11653         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11654                 setup.dtim_period =
11655                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11656                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11657                         return -EINVAL;
11658         }
11659
11660         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11661                 /* parse additional setup parameters if given */
11662                 err = nl80211_parse_mesh_setup(info, &setup);
11663                 if (err)
11664                         return err;
11665         }
11666
11667         if (setup.user_mpm)
11668                 cfg.auto_open_plinks = false;
11669
11670         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11671                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11672                 if (err)
11673                         return err;
11674         } else {
11675                 /* __cfg80211_join_mesh() will sort it out */
11676                 setup.chandef.chan = NULL;
11677         }
11678
11679         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11680                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11681                 int n_rates =
11682                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11683                 struct ieee80211_supported_band *sband;
11684
11685                 if (!setup.chandef.chan)
11686                         return -EINVAL;
11687
11688                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11689
11690                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11691                                              &setup.basic_rates);
11692                 if (err)
11693                         return err;
11694         }
11695
11696         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11697                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11698                                                     NL80211_ATTR_TX_RATES,
11699                                                     &setup.beacon_rate,
11700                                                     dev);
11701                 if (err)
11702                         return err;
11703
11704                 if (!setup.chandef.chan)
11705                         return -EINVAL;
11706
11707                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11708                                               &setup.beacon_rate);
11709                 if (err)
11710                         return err;
11711         }
11712
11713         setup.userspace_handles_dfs =
11714                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11715
11716         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11717                 int r = validate_pae_over_nl80211(rdev, info);
11718
11719                 if (r < 0)
11720                         return r;
11721
11722                 setup.control_port_over_nl80211 = true;
11723         }
11724
11725         wdev_lock(dev->ieee80211_ptr);
11726         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11727         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11728                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11729         wdev_unlock(dev->ieee80211_ptr);
11730
11731         return err;
11732 }
11733
11734 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11735 {
11736         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11737         struct net_device *dev = info->user_ptr[1];
11738
11739         return cfg80211_leave_mesh(rdev, dev);
11740 }
11741
11742 #ifdef CONFIG_PM
11743 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11744                                         struct cfg80211_registered_device *rdev)
11745 {
11746         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11747         struct nlattr *nl_pats, *nl_pat;
11748         int i, pat_len;
11749
11750         if (!wowlan->n_patterns)
11751                 return 0;
11752
11753         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11754         if (!nl_pats)
11755                 return -ENOBUFS;
11756
11757         for (i = 0; i < wowlan->n_patterns; i++) {
11758                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11759                 if (!nl_pat)
11760                         return -ENOBUFS;
11761                 pat_len = wowlan->patterns[i].pattern_len;
11762                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11763                             wowlan->patterns[i].mask) ||
11764                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11765                             wowlan->patterns[i].pattern) ||
11766                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11767                                 wowlan->patterns[i].pkt_offset))
11768                         return -ENOBUFS;
11769                 nla_nest_end(msg, nl_pat);
11770         }
11771         nla_nest_end(msg, nl_pats);
11772
11773         return 0;
11774 }
11775
11776 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11777                                    struct cfg80211_wowlan_tcp *tcp)
11778 {
11779         struct nlattr *nl_tcp;
11780
11781         if (!tcp)
11782                 return 0;
11783
11784         nl_tcp = nla_nest_start_noflag(msg,
11785                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11786         if (!nl_tcp)
11787                 return -ENOBUFS;
11788
11789         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11790             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11791             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11792             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11793             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11794             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11795                     tcp->payload_len, tcp->payload) ||
11796             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11797                         tcp->data_interval) ||
11798             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11799                     tcp->wake_len, tcp->wake_data) ||
11800             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11801                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11802                 return -ENOBUFS;
11803
11804         if (tcp->payload_seq.len &&
11805             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11806                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11807                 return -ENOBUFS;
11808
11809         if (tcp->payload_tok.len &&
11810             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11811                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11812                     &tcp->payload_tok))
11813                 return -ENOBUFS;
11814
11815         nla_nest_end(msg, nl_tcp);
11816
11817         return 0;
11818 }
11819
11820 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11821                                   struct cfg80211_sched_scan_request *req)
11822 {
11823         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11824         int i;
11825
11826         if (!req)
11827                 return 0;
11828
11829         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11830         if (!nd)
11831                 return -ENOBUFS;
11832
11833         if (req->n_scan_plans == 1 &&
11834             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11835                         req->scan_plans[0].interval * 1000))
11836                 return -ENOBUFS;
11837
11838         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11839                 return -ENOBUFS;
11840
11841         if (req->relative_rssi_set) {
11842                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11843
11844                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11845                                req->relative_rssi))
11846                         return -ENOBUFS;
11847
11848                 rssi_adjust.band = req->rssi_adjust.band;
11849                 rssi_adjust.delta = req->rssi_adjust.delta;
11850                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11851                             sizeof(rssi_adjust), &rssi_adjust))
11852                         return -ENOBUFS;
11853         }
11854
11855         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11856         if (!freqs)
11857                 return -ENOBUFS;
11858
11859         for (i = 0; i < req->n_channels; i++) {
11860                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11861                         return -ENOBUFS;
11862         }
11863
11864         nla_nest_end(msg, freqs);
11865
11866         if (req->n_match_sets) {
11867                 matches = nla_nest_start_noflag(msg,
11868                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11869                 if (!matches)
11870                         return -ENOBUFS;
11871
11872                 for (i = 0; i < req->n_match_sets; i++) {
11873                         match = nla_nest_start_noflag(msg, i);
11874                         if (!match)
11875                                 return -ENOBUFS;
11876
11877                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11878                                     req->match_sets[i].ssid.ssid_len,
11879                                     req->match_sets[i].ssid.ssid))
11880                                 return -ENOBUFS;
11881                         nla_nest_end(msg, match);
11882                 }
11883                 nla_nest_end(msg, matches);
11884         }
11885
11886         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11887         if (!scan_plans)
11888                 return -ENOBUFS;
11889
11890         for (i = 0; i < req->n_scan_plans; i++) {
11891                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11892                 if (!scan_plan)
11893                         return -ENOBUFS;
11894
11895                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11896                                 req->scan_plans[i].interval) ||
11897                     (req->scan_plans[i].iterations &&
11898                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11899                                  req->scan_plans[i].iterations)))
11900                         return -ENOBUFS;
11901                 nla_nest_end(msg, scan_plan);
11902         }
11903         nla_nest_end(msg, scan_plans);
11904
11905         nla_nest_end(msg, nd);
11906
11907         return 0;
11908 }
11909
11910 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11911 {
11912         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11913         struct sk_buff *msg;
11914         void *hdr;
11915         u32 size = NLMSG_DEFAULT_SIZE;
11916
11917         if (!rdev->wiphy.wowlan)
11918                 return -EOPNOTSUPP;
11919
11920         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11921                 /* adjust size to have room for all the data */
11922                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11923                         rdev->wiphy.wowlan_config->tcp->payload_len +
11924                         rdev->wiphy.wowlan_config->tcp->wake_len +
11925                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11926         }
11927
11928         msg = nlmsg_new(size, GFP_KERNEL);
11929         if (!msg)
11930                 return -ENOMEM;
11931
11932         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11933                              NL80211_CMD_GET_WOWLAN);
11934         if (!hdr)
11935                 goto nla_put_failure;
11936
11937         if (rdev->wiphy.wowlan_config) {
11938                 struct nlattr *nl_wowlan;
11939
11940                 nl_wowlan = nla_nest_start_noflag(msg,
11941                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11942                 if (!nl_wowlan)
11943                         goto nla_put_failure;
11944
11945                 if ((rdev->wiphy.wowlan_config->any &&
11946                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11947                     (rdev->wiphy.wowlan_config->disconnect &&
11948                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11949                     (rdev->wiphy.wowlan_config->magic_pkt &&
11950                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11951                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11952                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11953                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11954                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11955                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11956                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11957                     (rdev->wiphy.wowlan_config->rfkill_release &&
11958                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11959                         goto nla_put_failure;
11960
11961                 if (nl80211_send_wowlan_patterns(msg, rdev))
11962                         goto nla_put_failure;
11963
11964                 if (nl80211_send_wowlan_tcp(msg,
11965                                             rdev->wiphy.wowlan_config->tcp))
11966                         goto nla_put_failure;
11967
11968                 if (nl80211_send_wowlan_nd(
11969                             msg,
11970                             rdev->wiphy.wowlan_config->nd_config))
11971                         goto nla_put_failure;
11972
11973                 nla_nest_end(msg, nl_wowlan);
11974         }
11975
11976         genlmsg_end(msg, hdr);
11977         return genlmsg_reply(msg, info);
11978
11979 nla_put_failure:
11980         nlmsg_free(msg);
11981         return -ENOBUFS;
11982 }
11983
11984 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11985                                     struct nlattr *attr,
11986                                     struct cfg80211_wowlan *trig)
11987 {
11988         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11989         struct cfg80211_wowlan_tcp *cfg;
11990         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11991         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11992         u32 size;
11993         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11994         int err, port;
11995
11996         if (!rdev->wiphy.wowlan->tcp)
11997                 return -EINVAL;
11998
11999         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12000                                           nl80211_wowlan_tcp_policy, NULL);
12001         if (err)
12002                 return err;
12003
12004         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12005             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12006             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12007             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12008             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12009             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12010             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12011             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12012                 return -EINVAL;
12013
12014         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12015         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12016                 return -EINVAL;
12017
12018         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12019                         rdev->wiphy.wowlan->tcp->data_interval_max ||
12020             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12021                 return -EINVAL;
12022
12023         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12024         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12025                 return -EINVAL;
12026
12027         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12028         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12029                 return -EINVAL;
12030
12031         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12032                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12033
12034                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12035                 tokens_size = tokln - sizeof(*tok);
12036
12037                 if (!tok->len || tokens_size % tok->len)
12038                         return -EINVAL;
12039                 if (!rdev->wiphy.wowlan->tcp->tok)
12040                         return -EINVAL;
12041                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12042                         return -EINVAL;
12043                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12044                         return -EINVAL;
12045                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12046                         return -EINVAL;
12047                 if (tok->offset + tok->len > data_size)
12048                         return -EINVAL;
12049         }
12050
12051         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12052                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12053                 if (!rdev->wiphy.wowlan->tcp->seq)
12054                         return -EINVAL;
12055                 if (seq->len == 0 || seq->len > 4)
12056                         return -EINVAL;
12057                 if (seq->len + seq->offset > data_size)
12058                         return -EINVAL;
12059         }
12060
12061         size = sizeof(*cfg);
12062         size += data_size;
12063         size += wake_size + wake_mask_size;
12064         size += tokens_size;
12065
12066         cfg = kzalloc(size, GFP_KERNEL);
12067         if (!cfg)
12068                 return -ENOMEM;
12069         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12070         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12071         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12072                ETH_ALEN);
12073         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12074                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12075         else
12076                 port = 0;
12077 #ifdef CONFIG_INET
12078         /* allocate a socket and port for it and use it */
12079         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12080                             IPPROTO_TCP, &cfg->sock, 1);
12081         if (err) {
12082                 kfree(cfg);
12083                 return err;
12084         }
12085         if (inet_csk_get_port(cfg->sock->sk, port)) {
12086                 sock_release(cfg->sock);
12087                 kfree(cfg);
12088                 return -EADDRINUSE;
12089         }
12090         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12091 #else
12092         if (!port) {
12093                 kfree(cfg);
12094                 return -EINVAL;
12095         }
12096         cfg->src_port = port;
12097 #endif
12098
12099         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12100         cfg->payload_len = data_size;
12101         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12102         memcpy((void *)cfg->payload,
12103                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12104                data_size);
12105         if (seq)
12106                 cfg->payload_seq = *seq;
12107         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12108         cfg->wake_len = wake_size;
12109         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12110         memcpy((void *)cfg->wake_data,
12111                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12112                wake_size);
12113         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12114                          data_size + wake_size;
12115         memcpy((void *)cfg->wake_mask,
12116                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12117                wake_mask_size);
12118         if (tok) {
12119                 cfg->tokens_size = tokens_size;
12120                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12121         }
12122
12123         trig->tcp = cfg;
12124
12125         return 0;
12126 }
12127
12128 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12129                                    const struct wiphy_wowlan_support *wowlan,
12130                                    struct nlattr *attr,
12131                                    struct cfg80211_wowlan *trig)
12132 {
12133         struct nlattr **tb;
12134         int err;
12135
12136         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12137         if (!tb)
12138                 return -ENOMEM;
12139
12140         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12141                 err = -EOPNOTSUPP;
12142                 goto out;
12143         }
12144
12145         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12146                                           nl80211_policy, NULL);
12147         if (err)
12148                 goto out;
12149
12150         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12151                                                    wowlan->max_nd_match_sets);
12152         err = PTR_ERR_OR_ZERO(trig->nd_config);
12153         if (err)
12154                 trig->nd_config = NULL;
12155
12156 out:
12157         kfree(tb);
12158         return err;
12159 }
12160
12161 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12162 {
12163         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12164         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12165         struct cfg80211_wowlan new_triggers = {};
12166         struct cfg80211_wowlan *ntrig;
12167         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12168         int err, i;
12169         bool prev_enabled = rdev->wiphy.wowlan_config;
12170         bool regular = false;
12171
12172         if (!wowlan)
12173                 return -EOPNOTSUPP;
12174
12175         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12176                 cfg80211_rdev_free_wowlan(rdev);
12177                 rdev->wiphy.wowlan_config = NULL;
12178                 goto set_wakeup;
12179         }
12180
12181         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12182                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12183                                           nl80211_wowlan_policy, info->extack);
12184         if (err)
12185                 return err;
12186
12187         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12188                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12189                         return -EINVAL;
12190                 new_triggers.any = true;
12191         }
12192
12193         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12194                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12195                         return -EINVAL;
12196                 new_triggers.disconnect = true;
12197                 regular = true;
12198         }
12199
12200         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12201                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12202                         return -EINVAL;
12203                 new_triggers.magic_pkt = true;
12204                 regular = true;
12205         }
12206
12207         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12208                 return -EINVAL;
12209
12210         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12211                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12212                         return -EINVAL;
12213                 new_triggers.gtk_rekey_failure = true;
12214                 regular = true;
12215         }
12216
12217         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12218                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12219                         return -EINVAL;
12220                 new_triggers.eap_identity_req = true;
12221                 regular = true;
12222         }
12223
12224         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12225                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12226                         return -EINVAL;
12227                 new_triggers.four_way_handshake = true;
12228                 regular = true;
12229         }
12230
12231         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12232                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12233                         return -EINVAL;
12234                 new_triggers.rfkill_release = true;
12235                 regular = true;
12236         }
12237
12238         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12239                 struct nlattr *pat;
12240                 int n_patterns = 0;
12241                 int rem, pat_len, mask_len, pkt_offset;
12242                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12243
12244                 regular = true;
12245
12246                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12247                                     rem)
12248                         n_patterns++;
12249                 if (n_patterns > wowlan->n_patterns)
12250                         return -EINVAL;
12251
12252                 new_triggers.patterns = kcalloc(n_patterns,
12253                                                 sizeof(new_triggers.patterns[0]),
12254                                                 GFP_KERNEL);
12255                 if (!new_triggers.patterns)
12256                         return -ENOMEM;
12257
12258                 new_triggers.n_patterns = n_patterns;
12259                 i = 0;
12260
12261                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12262                                     rem) {
12263                         u8 *mask_pat;
12264
12265                         err = nla_parse_nested_deprecated(pat_tb,
12266                                                           MAX_NL80211_PKTPAT,
12267                                                           pat,
12268                                                           nl80211_packet_pattern_policy,
12269                                                           info->extack);
12270                         if (err)
12271                                 goto error;
12272
12273                         err = -EINVAL;
12274                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
12275                             !pat_tb[NL80211_PKTPAT_PATTERN])
12276                                 goto error;
12277                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12278                         mask_len = DIV_ROUND_UP(pat_len, 8);
12279                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12280                                 goto error;
12281                         if (pat_len > wowlan->pattern_max_len ||
12282                             pat_len < wowlan->pattern_min_len)
12283                                 goto error;
12284
12285                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
12286                                 pkt_offset = 0;
12287                         else
12288                                 pkt_offset = nla_get_u32(
12289                                         pat_tb[NL80211_PKTPAT_OFFSET]);
12290                         if (pkt_offset > wowlan->max_pkt_offset)
12291                                 goto error;
12292                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12293
12294                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12295                         if (!mask_pat) {
12296                                 err = -ENOMEM;
12297                                 goto error;
12298                         }
12299                         new_triggers.patterns[i].mask = mask_pat;
12300                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12301                                mask_len);
12302                         mask_pat += mask_len;
12303                         new_triggers.patterns[i].pattern = mask_pat;
12304                         new_triggers.patterns[i].pattern_len = pat_len;
12305                         memcpy(mask_pat,
12306                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12307                                pat_len);
12308                         i++;
12309                 }
12310         }
12311
12312         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12313                 regular = true;
12314                 err = nl80211_parse_wowlan_tcp(
12315                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12316                         &new_triggers);
12317                 if (err)
12318                         goto error;
12319         }
12320
12321         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12322                 regular = true;
12323                 err = nl80211_parse_wowlan_nd(
12324                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12325                         &new_triggers);
12326                 if (err)
12327                         goto error;
12328         }
12329
12330         /* The 'any' trigger means the device continues operating more or less
12331          * as in its normal operation mode and wakes up the host on most of the
12332          * normal interrupts (like packet RX, ...)
12333          * It therefore makes little sense to combine with the more constrained
12334          * wakeup trigger modes.
12335          */
12336         if (new_triggers.any && regular) {
12337                 err = -EINVAL;
12338                 goto error;
12339         }
12340
12341         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12342         if (!ntrig) {
12343                 err = -ENOMEM;
12344                 goto error;
12345         }
12346         cfg80211_rdev_free_wowlan(rdev);
12347         rdev->wiphy.wowlan_config = ntrig;
12348
12349  set_wakeup:
12350         if (rdev->ops->set_wakeup &&
12351             prev_enabled != !!rdev->wiphy.wowlan_config)
12352                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12353
12354         return 0;
12355  error:
12356         for (i = 0; i < new_triggers.n_patterns; i++)
12357                 kfree(new_triggers.patterns[i].mask);
12358         kfree(new_triggers.patterns);
12359         if (new_triggers.tcp && new_triggers.tcp->sock)
12360                 sock_release(new_triggers.tcp->sock);
12361         kfree(new_triggers.tcp);
12362         kfree(new_triggers.nd_config);
12363         return err;
12364 }
12365 #endif
12366
12367 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12368                                        struct cfg80211_registered_device *rdev)
12369 {
12370         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12371         int i, j, pat_len;
12372         struct cfg80211_coalesce_rules *rule;
12373
12374         if (!rdev->coalesce->n_rules)
12375                 return 0;
12376
12377         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12378         if (!nl_rules)
12379                 return -ENOBUFS;
12380
12381         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12382                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12383                 if (!nl_rule)
12384                         return -ENOBUFS;
12385
12386                 rule = &rdev->coalesce->rules[i];
12387                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12388                                 rule->delay))
12389                         return -ENOBUFS;
12390
12391                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12392                                 rule->condition))
12393                         return -ENOBUFS;
12394
12395                 nl_pats = nla_nest_start_noflag(msg,
12396                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12397                 if (!nl_pats)
12398                         return -ENOBUFS;
12399
12400                 for (j = 0; j < rule->n_patterns; j++) {
12401                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12402                         if (!nl_pat)
12403                                 return -ENOBUFS;
12404                         pat_len = rule->patterns[j].pattern_len;
12405                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12406                                     DIV_ROUND_UP(pat_len, 8),
12407                                     rule->patterns[j].mask) ||
12408                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12409                                     rule->patterns[j].pattern) ||
12410                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12411                                         rule->patterns[j].pkt_offset))
12412                                 return -ENOBUFS;
12413                         nla_nest_end(msg, nl_pat);
12414                 }
12415                 nla_nest_end(msg, nl_pats);
12416                 nla_nest_end(msg, nl_rule);
12417         }
12418         nla_nest_end(msg, nl_rules);
12419
12420         return 0;
12421 }
12422
12423 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12424 {
12425         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12426         struct sk_buff *msg;
12427         void *hdr;
12428
12429         if (!rdev->wiphy.coalesce)
12430                 return -EOPNOTSUPP;
12431
12432         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12433         if (!msg)
12434                 return -ENOMEM;
12435
12436         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12437                              NL80211_CMD_GET_COALESCE);
12438         if (!hdr)
12439                 goto nla_put_failure;
12440
12441         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12442                 goto nla_put_failure;
12443
12444         genlmsg_end(msg, hdr);
12445         return genlmsg_reply(msg, info);
12446
12447 nla_put_failure:
12448         nlmsg_free(msg);
12449         return -ENOBUFS;
12450 }
12451
12452 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12453 {
12454         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12455         int i, j;
12456         struct cfg80211_coalesce_rules *rule;
12457
12458         if (!coalesce)
12459                 return;
12460
12461         for (i = 0; i < coalesce->n_rules; i++) {
12462                 rule = &coalesce->rules[i];
12463                 for (j = 0; j < rule->n_patterns; j++)
12464                         kfree(rule->patterns[j].mask);
12465                 kfree(rule->patterns);
12466         }
12467         kfree(coalesce->rules);
12468         kfree(coalesce);
12469         rdev->coalesce = NULL;
12470 }
12471
12472 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12473                                        struct nlattr *rule,
12474                                        struct cfg80211_coalesce_rules *new_rule)
12475 {
12476         int err, i;
12477         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12478         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12479         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12480         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12481
12482         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12483                                           rule, nl80211_coalesce_policy, NULL);
12484         if (err)
12485                 return err;
12486
12487         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12488                 new_rule->delay =
12489                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12490         if (new_rule->delay > coalesce->max_delay)
12491                 return -EINVAL;
12492
12493         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12494                 new_rule->condition =
12495                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12496
12497         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12498                 return -EINVAL;
12499
12500         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12501                             rem)
12502                 n_patterns++;
12503         if (n_patterns > coalesce->n_patterns)
12504                 return -EINVAL;
12505
12506         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12507                                      GFP_KERNEL);
12508         if (!new_rule->patterns)
12509                 return -ENOMEM;
12510
12511         new_rule->n_patterns = n_patterns;
12512         i = 0;
12513
12514         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12515                             rem) {
12516                 u8 *mask_pat;
12517
12518                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12519                                                   pat,
12520                                                   nl80211_packet_pattern_policy,
12521                                                   NULL);
12522                 if (err)
12523                         return err;
12524
12525                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12526                     !pat_tb[NL80211_PKTPAT_PATTERN])
12527                         return -EINVAL;
12528                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12529                 mask_len = DIV_ROUND_UP(pat_len, 8);
12530                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12531                         return -EINVAL;
12532                 if (pat_len > coalesce->pattern_max_len ||
12533                     pat_len < coalesce->pattern_min_len)
12534                         return -EINVAL;
12535
12536                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12537                         pkt_offset = 0;
12538                 else
12539                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12540                 if (pkt_offset > coalesce->max_pkt_offset)
12541                         return -EINVAL;
12542                 new_rule->patterns[i].pkt_offset = pkt_offset;
12543
12544                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12545                 if (!mask_pat)
12546                         return -ENOMEM;
12547
12548                 new_rule->patterns[i].mask = mask_pat;
12549                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12550                        mask_len);
12551
12552                 mask_pat += mask_len;
12553                 new_rule->patterns[i].pattern = mask_pat;
12554                 new_rule->patterns[i].pattern_len = pat_len;
12555                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12556                        pat_len);
12557                 i++;
12558         }
12559
12560         return 0;
12561 }
12562
12563 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12564 {
12565         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12566         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12567         struct cfg80211_coalesce new_coalesce = {};
12568         struct cfg80211_coalesce *n_coalesce;
12569         int err, rem_rule, n_rules = 0, i, j;
12570         struct nlattr *rule;
12571         struct cfg80211_coalesce_rules *tmp_rule;
12572
12573         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12574                 return -EOPNOTSUPP;
12575
12576         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12577                 cfg80211_rdev_free_coalesce(rdev);
12578                 rdev_set_coalesce(rdev, NULL);
12579                 return 0;
12580         }
12581
12582         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12583                             rem_rule)
12584                 n_rules++;
12585         if (n_rules > coalesce->n_rules)
12586                 return -EINVAL;
12587
12588         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12589                                      GFP_KERNEL);
12590         if (!new_coalesce.rules)
12591                 return -ENOMEM;
12592
12593         new_coalesce.n_rules = n_rules;
12594         i = 0;
12595
12596         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12597                             rem_rule) {
12598                 err = nl80211_parse_coalesce_rule(rdev, rule,
12599                                                   &new_coalesce.rules[i]);
12600                 if (err)
12601                         goto error;
12602
12603                 i++;
12604         }
12605
12606         err = rdev_set_coalesce(rdev, &new_coalesce);
12607         if (err)
12608                 goto error;
12609
12610         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12611         if (!n_coalesce) {
12612                 err = -ENOMEM;
12613                 goto error;
12614         }
12615         cfg80211_rdev_free_coalesce(rdev);
12616         rdev->coalesce = n_coalesce;
12617
12618         return 0;
12619 error:
12620         for (i = 0; i < new_coalesce.n_rules; i++) {
12621                 tmp_rule = &new_coalesce.rules[i];
12622                 for (j = 0; j < tmp_rule->n_patterns; j++)
12623                         kfree(tmp_rule->patterns[j].mask);
12624                 kfree(tmp_rule->patterns);
12625         }
12626         kfree(new_coalesce.rules);
12627
12628         return err;
12629 }
12630
12631 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12632 {
12633         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12634         struct net_device *dev = info->user_ptr[1];
12635         struct wireless_dev *wdev = dev->ieee80211_ptr;
12636         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12637         struct cfg80211_gtk_rekey_data rekey_data;
12638         int err;
12639
12640         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12641                 return -EINVAL;
12642
12643         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12644                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12645                                           nl80211_rekey_policy, info->extack);
12646         if (err)
12647                 return err;
12648
12649         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12650             !tb[NL80211_REKEY_DATA_KCK])
12651                 return -EINVAL;
12652         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12653             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12654               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12655                 return -ERANGE;
12656         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12657             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12658               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12659                 return -ERANGE;
12660
12661         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12662         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12663         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12664         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12665         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12666         if (tb[NL80211_REKEY_DATA_AKM])
12667                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12668
12669         wdev_lock(wdev);
12670         if (!wdev->current_bss) {
12671                 err = -ENOTCONN;
12672                 goto out;
12673         }
12674
12675         if (!rdev->ops->set_rekey_data) {
12676                 err = -EOPNOTSUPP;
12677                 goto out;
12678         }
12679
12680         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12681  out:
12682         wdev_unlock(wdev);
12683         return err;
12684 }
12685
12686 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12687                                              struct genl_info *info)
12688 {
12689         struct net_device *dev = info->user_ptr[1];
12690         struct wireless_dev *wdev = dev->ieee80211_ptr;
12691
12692         if (wdev->iftype != NL80211_IFTYPE_AP &&
12693             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12694                 return -EINVAL;
12695
12696         if (wdev->ap_unexpected_nlportid)
12697                 return -EBUSY;
12698
12699         wdev->ap_unexpected_nlportid = info->snd_portid;
12700         return 0;
12701 }
12702
12703 static int nl80211_probe_client(struct sk_buff *skb,
12704                                 struct genl_info *info)
12705 {
12706         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12707         struct net_device *dev = info->user_ptr[1];
12708         struct wireless_dev *wdev = dev->ieee80211_ptr;
12709         struct sk_buff *msg;
12710         void *hdr;
12711         const u8 *addr;
12712         u64 cookie;
12713         int err;
12714
12715         if (wdev->iftype != NL80211_IFTYPE_AP &&
12716             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12717                 return -EOPNOTSUPP;
12718
12719         if (!info->attrs[NL80211_ATTR_MAC])
12720                 return -EINVAL;
12721
12722         if (!rdev->ops->probe_client)
12723                 return -EOPNOTSUPP;
12724
12725         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12726         if (!msg)
12727                 return -ENOMEM;
12728
12729         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12730                              NL80211_CMD_PROBE_CLIENT);
12731         if (!hdr) {
12732                 err = -ENOBUFS;
12733                 goto free_msg;
12734         }
12735
12736         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12737
12738         err = rdev_probe_client(rdev, dev, addr, &cookie);
12739         if (err)
12740                 goto free_msg;
12741
12742         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12743                               NL80211_ATTR_PAD))
12744                 goto nla_put_failure;
12745
12746         genlmsg_end(msg, hdr);
12747
12748         return genlmsg_reply(msg, info);
12749
12750  nla_put_failure:
12751         err = -ENOBUFS;
12752  free_msg:
12753         nlmsg_free(msg);
12754         return err;
12755 }
12756
12757 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12758 {
12759         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12760         struct cfg80211_beacon_registration *reg, *nreg;
12761         int rv;
12762
12763         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12764                 return -EOPNOTSUPP;
12765
12766         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12767         if (!nreg)
12768                 return -ENOMEM;
12769
12770         /* First, check if already registered. */
12771         spin_lock_bh(&rdev->beacon_registrations_lock);
12772         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12773                 if (reg->nlportid == info->snd_portid) {
12774                         rv = -EALREADY;
12775                         goto out_err;
12776                 }
12777         }
12778         /* Add it to the list */
12779         nreg->nlportid = info->snd_portid;
12780         list_add(&nreg->list, &rdev->beacon_registrations);
12781
12782         spin_unlock_bh(&rdev->beacon_registrations_lock);
12783
12784         return 0;
12785 out_err:
12786         spin_unlock_bh(&rdev->beacon_registrations_lock);
12787         kfree(nreg);
12788         return rv;
12789 }
12790
12791 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12792 {
12793         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12794         struct wireless_dev *wdev = info->user_ptr[1];
12795         int err;
12796
12797         if (!rdev->ops->start_p2p_device)
12798                 return -EOPNOTSUPP;
12799
12800         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12801                 return -EOPNOTSUPP;
12802
12803         if (wdev_running(wdev))
12804                 return 0;
12805
12806         if (rfkill_blocked(rdev->rfkill))
12807                 return -ERFKILL;
12808
12809         err = rdev_start_p2p_device(rdev, wdev);
12810         if (err)
12811                 return err;
12812
12813         wdev->is_running = true;
12814         rdev->opencount++;
12815
12816         return 0;
12817 }
12818
12819 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12820 {
12821         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12822         struct wireless_dev *wdev = info->user_ptr[1];
12823
12824         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12825                 return -EOPNOTSUPP;
12826
12827         if (!rdev->ops->stop_p2p_device)
12828                 return -EOPNOTSUPP;
12829
12830         cfg80211_stop_p2p_device(rdev, wdev);
12831
12832         return 0;
12833 }
12834
12835 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12836 {
12837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12838         struct wireless_dev *wdev = info->user_ptr[1];
12839         struct cfg80211_nan_conf conf = {};
12840         int err;
12841
12842         if (wdev->iftype != NL80211_IFTYPE_NAN)
12843                 return -EOPNOTSUPP;
12844
12845         if (wdev_running(wdev))
12846                 return -EEXIST;
12847
12848         if (rfkill_blocked(rdev->rfkill))
12849                 return -ERFKILL;
12850
12851         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12852                 return -EINVAL;
12853
12854         conf.master_pref =
12855                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12856
12857         if (info->attrs[NL80211_ATTR_BANDS]) {
12858                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12859
12860                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12861                         return -EOPNOTSUPP;
12862
12863                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12864                         return -EINVAL;
12865
12866                 conf.bands = bands;
12867         }
12868
12869         err = rdev_start_nan(rdev, wdev, &conf);
12870         if (err)
12871                 return err;
12872
12873         wdev->is_running = true;
12874         rdev->opencount++;
12875
12876         return 0;
12877 }
12878
12879 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12880 {
12881         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12882         struct wireless_dev *wdev = info->user_ptr[1];
12883
12884         if (wdev->iftype != NL80211_IFTYPE_NAN)
12885                 return -EOPNOTSUPP;
12886
12887         cfg80211_stop_nan(rdev, wdev);
12888
12889         return 0;
12890 }
12891
12892 static int validate_nan_filter(struct nlattr *filter_attr)
12893 {
12894         struct nlattr *attr;
12895         int len = 0, n_entries = 0, rem;
12896
12897         nla_for_each_nested(attr, filter_attr, rem) {
12898                 len += nla_len(attr);
12899                 n_entries++;
12900         }
12901
12902         if (len >= U8_MAX)
12903                 return -EINVAL;
12904
12905         return n_entries;
12906 }
12907
12908 static int handle_nan_filter(struct nlattr *attr_filter,
12909                              struct cfg80211_nan_func *func,
12910                              bool tx)
12911 {
12912         struct nlattr *attr;
12913         int n_entries, rem, i;
12914         struct cfg80211_nan_func_filter *filter;
12915
12916         n_entries = validate_nan_filter(attr_filter);
12917         if (n_entries < 0)
12918                 return n_entries;
12919
12920         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12921
12922         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12923         if (!filter)
12924                 return -ENOMEM;
12925
12926         i = 0;
12927         nla_for_each_nested(attr, attr_filter, rem) {
12928                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12929                 filter[i].len = nla_len(attr);
12930                 i++;
12931         }
12932         if (tx) {
12933                 func->num_tx_filters = n_entries;
12934                 func->tx_filters = filter;
12935         } else {
12936                 func->num_rx_filters = n_entries;
12937                 func->rx_filters = filter;
12938         }
12939
12940         return 0;
12941 }
12942
12943 static int nl80211_nan_add_func(struct sk_buff *skb,
12944                                 struct genl_info *info)
12945 {
12946         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12947         struct wireless_dev *wdev = info->user_ptr[1];
12948         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12949         struct cfg80211_nan_func *func;
12950         struct sk_buff *msg = NULL;
12951         void *hdr = NULL;
12952         int err = 0;
12953
12954         if (wdev->iftype != NL80211_IFTYPE_NAN)
12955                 return -EOPNOTSUPP;
12956
12957         if (!wdev_running(wdev))
12958                 return -ENOTCONN;
12959
12960         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12961                 return -EINVAL;
12962
12963         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12964                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12965                                           nl80211_nan_func_policy,
12966                                           info->extack);
12967         if (err)
12968                 return err;
12969
12970         func = kzalloc(sizeof(*func), GFP_KERNEL);
12971         if (!func)
12972                 return -ENOMEM;
12973
12974         func->cookie = cfg80211_assign_cookie(rdev);
12975
12976         if (!tb[NL80211_NAN_FUNC_TYPE]) {
12977                 err = -EINVAL;
12978                 goto out;
12979         }
12980
12981
12982         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12983
12984         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12985                 err = -EINVAL;
12986                 goto out;
12987         }
12988
12989         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12990                sizeof(func->service_id));
12991
12992         func->close_range =
12993                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12994
12995         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12996                 func->serv_spec_info_len =
12997                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12998                 func->serv_spec_info =
12999                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13000                                 func->serv_spec_info_len,
13001                                 GFP_KERNEL);
13002                 if (!func->serv_spec_info) {
13003                         err = -ENOMEM;
13004                         goto out;
13005                 }
13006         }
13007
13008         if (tb[NL80211_NAN_FUNC_TTL])
13009                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13010
13011         switch (func->type) {
13012         case NL80211_NAN_FUNC_PUBLISH:
13013                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13014                         err = -EINVAL;
13015                         goto out;
13016                 }
13017
13018                 func->publish_type =
13019                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13020                 func->publish_bcast =
13021                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13022
13023                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13024                         func->publish_bcast) {
13025                         err = -EINVAL;
13026                         goto out;
13027                 }
13028                 break;
13029         case NL80211_NAN_FUNC_SUBSCRIBE:
13030                 func->subscribe_active =
13031                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13032                 break;
13033         case NL80211_NAN_FUNC_FOLLOW_UP:
13034                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13035                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13036                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13037                         err = -EINVAL;
13038                         goto out;
13039                 }
13040
13041                 func->followup_id =
13042                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13043                 func->followup_reqid =
13044                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13045                 memcpy(func->followup_dest.addr,
13046                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13047                        sizeof(func->followup_dest.addr));
13048                 if (func->ttl) {
13049                         err = -EINVAL;
13050                         goto out;
13051                 }
13052                 break;
13053         default:
13054                 err = -EINVAL;
13055                 goto out;
13056         }
13057
13058         if (tb[NL80211_NAN_FUNC_SRF]) {
13059                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13060
13061                 err = nla_parse_nested_deprecated(srf_tb,
13062                                                   NL80211_NAN_SRF_ATTR_MAX,
13063                                                   tb[NL80211_NAN_FUNC_SRF],
13064                                                   nl80211_nan_srf_policy,
13065                                                   info->extack);
13066                 if (err)
13067                         goto out;
13068
13069                 func->srf_include =
13070                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13071
13072                 if (srf_tb[NL80211_NAN_SRF_BF]) {
13073                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13074                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13075                                 err = -EINVAL;
13076                                 goto out;
13077                         }
13078
13079                         func->srf_bf_len =
13080                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13081                         func->srf_bf =
13082                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13083                                         func->srf_bf_len, GFP_KERNEL);
13084                         if (!func->srf_bf) {
13085                                 err = -ENOMEM;
13086                                 goto out;
13087                         }
13088
13089                         func->srf_bf_idx =
13090                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13091                 } else {
13092                         struct nlattr *attr, *mac_attr =
13093                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13094                         int n_entries, rem, i = 0;
13095
13096                         if (!mac_attr) {
13097                                 err = -EINVAL;
13098                                 goto out;
13099                         }
13100
13101                         n_entries = validate_acl_mac_addrs(mac_attr);
13102                         if (n_entries <= 0) {
13103                                 err = -EINVAL;
13104                                 goto out;
13105                         }
13106
13107                         func->srf_num_macs = n_entries;
13108                         func->srf_macs =
13109                                 kcalloc(n_entries, sizeof(*func->srf_macs),
13110                                         GFP_KERNEL);
13111                         if (!func->srf_macs) {
13112                                 err = -ENOMEM;
13113                                 goto out;
13114                         }
13115
13116                         nla_for_each_nested(attr, mac_attr, rem)
13117                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13118                                        sizeof(*func->srf_macs));
13119                 }
13120         }
13121
13122         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13123                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13124                                         func, true);
13125                 if (err)
13126                         goto out;
13127         }
13128
13129         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13130                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13131                                         func, false);
13132                 if (err)
13133                         goto out;
13134         }
13135
13136         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13137         if (!msg) {
13138                 err = -ENOMEM;
13139                 goto out;
13140         }
13141
13142         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13143                              NL80211_CMD_ADD_NAN_FUNCTION);
13144         /* This can't really happen - we just allocated 4KB */
13145         if (WARN_ON(!hdr)) {
13146                 err = -ENOMEM;
13147                 goto out;
13148         }
13149
13150         err = rdev_add_nan_func(rdev, wdev, func);
13151 out:
13152         if (err < 0) {
13153                 cfg80211_free_nan_func(func);
13154                 nlmsg_free(msg);
13155                 return err;
13156         }
13157
13158         /* propagate the instance id and cookie to userspace  */
13159         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13160                               NL80211_ATTR_PAD))
13161                 goto nla_put_failure;
13162
13163         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13164         if (!func_attr)
13165                 goto nla_put_failure;
13166
13167         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13168                        func->instance_id))
13169                 goto nla_put_failure;
13170
13171         nla_nest_end(msg, func_attr);
13172
13173         genlmsg_end(msg, hdr);
13174         return genlmsg_reply(msg, info);
13175
13176 nla_put_failure:
13177         nlmsg_free(msg);
13178         return -ENOBUFS;
13179 }
13180
13181 static int nl80211_nan_del_func(struct sk_buff *skb,
13182                                struct genl_info *info)
13183 {
13184         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13185         struct wireless_dev *wdev = info->user_ptr[1];
13186         u64 cookie;
13187
13188         if (wdev->iftype != NL80211_IFTYPE_NAN)
13189                 return -EOPNOTSUPP;
13190
13191         if (!wdev_running(wdev))
13192                 return -ENOTCONN;
13193
13194         if (!info->attrs[NL80211_ATTR_COOKIE])
13195                 return -EINVAL;
13196
13197         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13198
13199         rdev_del_nan_func(rdev, wdev, cookie);
13200
13201         return 0;
13202 }
13203
13204 static int nl80211_nan_change_config(struct sk_buff *skb,
13205                                      struct genl_info *info)
13206 {
13207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13208         struct wireless_dev *wdev = info->user_ptr[1];
13209         struct cfg80211_nan_conf conf = {};
13210         u32 changed = 0;
13211
13212         if (wdev->iftype != NL80211_IFTYPE_NAN)
13213                 return -EOPNOTSUPP;
13214
13215         if (!wdev_running(wdev))
13216                 return -ENOTCONN;
13217
13218         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13219                 conf.master_pref =
13220                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13221                 if (conf.master_pref <= 1 || conf.master_pref == 255)
13222                         return -EINVAL;
13223
13224                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13225         }
13226
13227         if (info->attrs[NL80211_ATTR_BANDS]) {
13228                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13229
13230                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13231                         return -EOPNOTSUPP;
13232
13233                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13234                         return -EINVAL;
13235
13236                 conf.bands = bands;
13237                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13238         }
13239
13240         if (!changed)
13241                 return -EINVAL;
13242
13243         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13244 }
13245
13246 void cfg80211_nan_match(struct wireless_dev *wdev,
13247                         struct cfg80211_nan_match_params *match, gfp_t gfp)
13248 {
13249         struct wiphy *wiphy = wdev->wiphy;
13250         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13251         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13252         struct sk_buff *msg;
13253         void *hdr;
13254
13255         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13256                 return;
13257
13258         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13259         if (!msg)
13260                 return;
13261
13262         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13263         if (!hdr) {
13264                 nlmsg_free(msg);
13265                 return;
13266         }
13267
13268         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13269             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13270                                          wdev->netdev->ifindex)) ||
13271             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13272                               NL80211_ATTR_PAD))
13273                 goto nla_put_failure;
13274
13275         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13276                               NL80211_ATTR_PAD) ||
13277             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13278                 goto nla_put_failure;
13279
13280         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13281         if (!match_attr)
13282                 goto nla_put_failure;
13283
13284         local_func_attr = nla_nest_start_noflag(msg,
13285                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
13286         if (!local_func_attr)
13287                 goto nla_put_failure;
13288
13289         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13290                 goto nla_put_failure;
13291
13292         nla_nest_end(msg, local_func_attr);
13293
13294         peer_func_attr = nla_nest_start_noflag(msg,
13295                                                NL80211_NAN_MATCH_FUNC_PEER);
13296         if (!peer_func_attr)
13297                 goto nla_put_failure;
13298
13299         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13300             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13301                 goto nla_put_failure;
13302
13303         if (match->info && match->info_len &&
13304             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13305                     match->info))
13306                 goto nla_put_failure;
13307
13308         nla_nest_end(msg, peer_func_attr);
13309         nla_nest_end(msg, match_attr);
13310         genlmsg_end(msg, hdr);
13311
13312         if (!wdev->owner_nlportid)
13313                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13314                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13315         else
13316                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13317                                 wdev->owner_nlportid);
13318
13319         return;
13320
13321 nla_put_failure:
13322         nlmsg_free(msg);
13323 }
13324 EXPORT_SYMBOL(cfg80211_nan_match);
13325
13326 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13327                                   u8 inst_id,
13328                                   enum nl80211_nan_func_term_reason reason,
13329                                   u64 cookie, gfp_t gfp)
13330 {
13331         struct wiphy *wiphy = wdev->wiphy;
13332         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13333         struct sk_buff *msg;
13334         struct nlattr *func_attr;
13335         void *hdr;
13336
13337         if (WARN_ON(!inst_id))
13338                 return;
13339
13340         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13341         if (!msg)
13342                 return;
13343
13344         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13345         if (!hdr) {
13346                 nlmsg_free(msg);
13347                 return;
13348         }
13349
13350         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13351             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13352                                          wdev->netdev->ifindex)) ||
13353             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13354                               NL80211_ATTR_PAD))
13355                 goto nla_put_failure;
13356
13357         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13358                               NL80211_ATTR_PAD))
13359                 goto nla_put_failure;
13360
13361         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13362         if (!func_attr)
13363                 goto nla_put_failure;
13364
13365         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13366             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13367                 goto nla_put_failure;
13368
13369         nla_nest_end(msg, func_attr);
13370         genlmsg_end(msg, hdr);
13371
13372         if (!wdev->owner_nlportid)
13373                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13374                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13375         else
13376                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13377                                 wdev->owner_nlportid);
13378
13379         return;
13380
13381 nla_put_failure:
13382         nlmsg_free(msg);
13383 }
13384 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13385
13386 static int nl80211_get_protocol_features(struct sk_buff *skb,
13387                                          struct genl_info *info)
13388 {
13389         void *hdr;
13390         struct sk_buff *msg;
13391
13392         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13393         if (!msg)
13394                 return -ENOMEM;
13395
13396         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13397                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13398         if (!hdr)
13399                 goto nla_put_failure;
13400
13401         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13402                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13403                 goto nla_put_failure;
13404
13405         genlmsg_end(msg, hdr);
13406         return genlmsg_reply(msg, info);
13407
13408  nla_put_failure:
13409         kfree_skb(msg);
13410         return -ENOBUFS;
13411 }
13412
13413 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13414 {
13415         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13416         struct cfg80211_update_ft_ies_params ft_params;
13417         struct net_device *dev = info->user_ptr[1];
13418
13419         if (!rdev->ops->update_ft_ies)
13420                 return -EOPNOTSUPP;
13421
13422         if (!info->attrs[NL80211_ATTR_MDID] ||
13423             !info->attrs[NL80211_ATTR_IE])
13424                 return -EINVAL;
13425
13426         memset(&ft_params, 0, sizeof(ft_params));
13427         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13428         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13429         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13430
13431         return rdev_update_ft_ies(rdev, dev, &ft_params);
13432 }
13433
13434 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13435                                        struct genl_info *info)
13436 {
13437         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13438         struct wireless_dev *wdev = info->user_ptr[1];
13439         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13440         u16 duration;
13441         int ret;
13442
13443         if (!rdev->ops->crit_proto_start)
13444                 return -EOPNOTSUPP;
13445
13446         if (WARN_ON(!rdev->ops->crit_proto_stop))
13447                 return -EINVAL;
13448
13449         if (rdev->crit_proto_nlportid)
13450                 return -EBUSY;
13451
13452         /* determine protocol if provided */
13453         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13454                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13455
13456         if (proto >= NUM_NL80211_CRIT_PROTO)
13457                 return -EINVAL;
13458
13459         /* timeout must be provided */
13460         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13461                 return -EINVAL;
13462
13463         duration =
13464                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13465
13466         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13467         if (!ret)
13468                 rdev->crit_proto_nlportid = info->snd_portid;
13469
13470         return ret;
13471 }
13472
13473 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13474                                       struct genl_info *info)
13475 {
13476         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13477         struct wireless_dev *wdev = info->user_ptr[1];
13478
13479         if (!rdev->ops->crit_proto_stop)
13480                 return -EOPNOTSUPP;
13481
13482         if (rdev->crit_proto_nlportid) {
13483                 rdev->crit_proto_nlportid = 0;
13484                 rdev_crit_proto_stop(rdev, wdev);
13485         }
13486         return 0;
13487 }
13488
13489 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13490                                        struct nlattr *attr,
13491                                        struct netlink_ext_ack *extack)
13492 {
13493         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13494                 if (attr->nla_type & NLA_F_NESTED) {
13495                         NL_SET_ERR_MSG_ATTR(extack, attr,
13496                                             "unexpected nested data");
13497                         return -EINVAL;
13498                 }
13499
13500                 return 0;
13501         }
13502
13503         if (!(attr->nla_type & NLA_F_NESTED)) {
13504                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13505                 return -EINVAL;
13506         }
13507
13508         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13509 }
13510
13511 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13512 {
13513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13514         struct wireless_dev *wdev =
13515                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
13516         int i, err;
13517         u32 vid, subcmd;
13518
13519         if (!rdev->wiphy.vendor_commands)
13520                 return -EOPNOTSUPP;
13521
13522         if (IS_ERR(wdev)) {
13523                 err = PTR_ERR(wdev);
13524                 if (err != -EINVAL)
13525                         return err;
13526                 wdev = NULL;
13527         } else if (wdev->wiphy != &rdev->wiphy) {
13528                 return -EINVAL;
13529         }
13530
13531         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13532             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13533                 return -EINVAL;
13534
13535         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13536         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13537         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13538                 const struct wiphy_vendor_command *vcmd;
13539                 void *data = NULL;
13540                 int len = 0;
13541
13542                 vcmd = &rdev->wiphy.vendor_commands[i];
13543
13544                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13545                         continue;
13546
13547                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13548                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13549                         if (!wdev)
13550                                 return -EINVAL;
13551                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13552                             !wdev->netdev)
13553                                 return -EINVAL;
13554
13555                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13556                                 if (!wdev_running(wdev))
13557                                         return -ENETDOWN;
13558                         }
13559                 } else {
13560                         wdev = NULL;
13561                 }
13562
13563                 if (!vcmd->doit)
13564                         return -EOPNOTSUPP;
13565
13566                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13567                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13568                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13569
13570                         err = nl80211_vendor_check_policy(vcmd,
13571                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13572                                         info->extack);
13573                         if (err)
13574                                 return err;
13575                 }
13576
13577                 rdev->cur_cmd_info = info;
13578                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13579                 rdev->cur_cmd_info = NULL;
13580                 return err;
13581         }
13582
13583         return -EOPNOTSUPP;
13584 }
13585
13586 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13587                                        struct netlink_callback *cb,
13588                                        struct cfg80211_registered_device **rdev,
13589                                        struct wireless_dev **wdev)
13590 {
13591         struct nlattr **attrbuf;
13592         u32 vid, subcmd;
13593         unsigned int i;
13594         int vcmd_idx = -1;
13595         int err;
13596         void *data = NULL;
13597         unsigned int data_len = 0;
13598
13599         if (cb->args[0]) {
13600                 /* subtract the 1 again here */
13601                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13602                 struct wireless_dev *tmp;
13603
13604                 if (!wiphy)
13605                         return -ENODEV;
13606                 *rdev = wiphy_to_rdev(wiphy);
13607                 *wdev = NULL;
13608
13609                 if (cb->args[1]) {
13610                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13611                                 if (tmp->identifier == cb->args[1] - 1) {
13612                                         *wdev = tmp;
13613                                         break;
13614                                 }
13615                         }
13616                 }
13617
13618                 /* keep rtnl locked in successful case */
13619                 return 0;
13620         }
13621
13622         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13623         if (!attrbuf)
13624                 return -ENOMEM;
13625
13626         err = nlmsg_parse_deprecated(cb->nlh,
13627                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13628                                      attrbuf, nl80211_fam.maxattr,
13629                                      nl80211_policy, NULL);
13630         if (err)
13631                 goto out;
13632
13633         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13634             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13635                 err = -EINVAL;
13636                 goto out;
13637         }
13638
13639         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13640         if (IS_ERR(*wdev))
13641                 *wdev = NULL;
13642
13643         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13644         if (IS_ERR(*rdev)) {
13645                 err = PTR_ERR(*rdev);
13646                 goto out;
13647         }
13648
13649         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13650         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13651
13652         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13653                 const struct wiphy_vendor_command *vcmd;
13654
13655                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13656
13657                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13658                         continue;
13659
13660                 if (!vcmd->dumpit) {
13661                         err = -EOPNOTSUPP;
13662                         goto out;
13663                 }
13664
13665                 vcmd_idx = i;
13666                 break;
13667         }
13668
13669         if (vcmd_idx < 0) {
13670                 err = -EOPNOTSUPP;
13671                 goto out;
13672         }
13673
13674         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13675                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13676                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13677
13678                 err = nl80211_vendor_check_policy(
13679                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13680                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13681                                 cb->extack);
13682                 if (err)
13683                         goto out;
13684         }
13685
13686         /* 0 is the first index - add 1 to parse only once */
13687         cb->args[0] = (*rdev)->wiphy_idx + 1;
13688         /* add 1 to know if it was NULL */
13689         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13690         cb->args[2] = vcmd_idx;
13691         cb->args[3] = (unsigned long)data;
13692         cb->args[4] = data_len;
13693
13694         /* keep rtnl locked in successful case */
13695         err = 0;
13696 out:
13697         kfree(attrbuf);
13698         return err;
13699 }
13700
13701 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13702                                    struct netlink_callback *cb)
13703 {
13704         struct cfg80211_registered_device *rdev;
13705         struct wireless_dev *wdev;
13706         unsigned int vcmd_idx;
13707         const struct wiphy_vendor_command *vcmd;
13708         void *data;
13709         int data_len;
13710         int err;
13711         struct nlattr *vendor_data;
13712
13713         rtnl_lock();
13714         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13715         if (err)
13716                 goto out;
13717
13718         vcmd_idx = cb->args[2];
13719         data = (void *)cb->args[3];
13720         data_len = cb->args[4];
13721         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13722
13723         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13724                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13725                 if (!wdev) {
13726                         err = -EINVAL;
13727                         goto out;
13728                 }
13729                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13730                     !wdev->netdev) {
13731                         err = -EINVAL;
13732                         goto out;
13733                 }
13734
13735                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13736                         if (!wdev_running(wdev)) {
13737                                 err = -ENETDOWN;
13738                                 goto out;
13739                         }
13740                 }
13741         }
13742
13743         while (1) {
13744                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13745                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13746                                            NL80211_CMD_VENDOR);
13747                 if (!hdr)
13748                         break;
13749
13750                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13751                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13752                                                wdev_id(wdev),
13753                                                NL80211_ATTR_PAD))) {
13754                         genlmsg_cancel(skb, hdr);
13755                         break;
13756                 }
13757
13758                 vendor_data = nla_nest_start_noflag(skb,
13759                                                     NL80211_ATTR_VENDOR_DATA);
13760                 if (!vendor_data) {
13761                         genlmsg_cancel(skb, hdr);
13762                         break;
13763                 }
13764
13765                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13766                                    (unsigned long *)&cb->args[5]);
13767                 nla_nest_end(skb, vendor_data);
13768
13769                 if (err == -ENOBUFS || err == -ENOENT) {
13770                         genlmsg_cancel(skb, hdr);
13771                         break;
13772                 } else if (err <= 0) {
13773                         genlmsg_cancel(skb, hdr);
13774                         goto out;
13775                 }
13776
13777                 genlmsg_end(skb, hdr);
13778         }
13779
13780         err = skb->len;
13781  out:
13782         rtnl_unlock();
13783         return err;
13784 }
13785
13786 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13787                                            enum nl80211_commands cmd,
13788                                            enum nl80211_attrs attr,
13789                                            int approxlen)
13790 {
13791         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13792
13793         if (WARN_ON(!rdev->cur_cmd_info))
13794                 return NULL;
13795
13796         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13797                                            rdev->cur_cmd_info->snd_portid,
13798                                            rdev->cur_cmd_info->snd_seq,
13799                                            cmd, attr, NULL, GFP_KERNEL);
13800 }
13801 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13802
13803 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13804 {
13805         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13806         void *hdr = ((void **)skb->cb)[1];
13807         struct nlattr *data = ((void **)skb->cb)[2];
13808
13809         /* clear CB data for netlink core to own from now on */
13810         memset(skb->cb, 0, sizeof(skb->cb));
13811
13812         if (WARN_ON(!rdev->cur_cmd_info)) {
13813                 kfree_skb(skb);
13814                 return -EINVAL;
13815         }
13816
13817         nla_nest_end(skb, data);
13818         genlmsg_end(skb, hdr);
13819         return genlmsg_reply(skb, rdev->cur_cmd_info);
13820 }
13821 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13822
13823 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13824 {
13825         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13826
13827         if (WARN_ON(!rdev->cur_cmd_info))
13828                 return 0;
13829
13830         return rdev->cur_cmd_info->snd_portid;
13831 }
13832 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13833
13834 static int nl80211_set_qos_map(struct sk_buff *skb,
13835                                struct genl_info *info)
13836 {
13837         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13838         struct cfg80211_qos_map *qos_map = NULL;
13839         struct net_device *dev = info->user_ptr[1];
13840         u8 *pos, len, num_des, des_len, des;
13841         int ret;
13842
13843         if (!rdev->ops->set_qos_map)
13844                 return -EOPNOTSUPP;
13845
13846         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13847                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13848                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13849
13850                 if (len % 2)
13851                         return -EINVAL;
13852
13853                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13854                 if (!qos_map)
13855                         return -ENOMEM;
13856
13857                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13858                 if (num_des) {
13859                         des_len = num_des *
13860                                 sizeof(struct cfg80211_dscp_exception);
13861                         memcpy(qos_map->dscp_exception, pos, des_len);
13862                         qos_map->num_des = num_des;
13863                         for (des = 0; des < num_des; des++) {
13864                                 if (qos_map->dscp_exception[des].up > 7) {
13865                                         kfree(qos_map);
13866                                         return -EINVAL;
13867                                 }
13868                         }
13869                         pos += des_len;
13870                 }
13871                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13872         }
13873
13874         wdev_lock(dev->ieee80211_ptr);
13875         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13876         if (!ret)
13877                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13878         wdev_unlock(dev->ieee80211_ptr);
13879
13880         kfree(qos_map);
13881         return ret;
13882 }
13883
13884 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13885 {
13886         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13887         struct net_device *dev = info->user_ptr[1];
13888         struct wireless_dev *wdev = dev->ieee80211_ptr;
13889         const u8 *peer;
13890         u8 tsid, up;
13891         u16 admitted_time = 0;
13892         int err;
13893
13894         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13895                 return -EOPNOTSUPP;
13896
13897         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13898             !info->attrs[NL80211_ATTR_USER_PRIO])
13899                 return -EINVAL;
13900
13901         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13902         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13903
13904         /* WMM uses TIDs 0-7 even for TSPEC */
13905         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13906                 /* TODO: handle 802.11 TSPEC/admission control
13907                  * need more attributes for that (e.g. BA session requirement);
13908                  * change the WMM adminssion test above to allow both then
13909                  */
13910                 return -EINVAL;
13911         }
13912
13913         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13914
13915         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13916                 admitted_time =
13917                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13918                 if (!admitted_time)
13919                         return -EINVAL;
13920         }
13921
13922         wdev_lock(wdev);
13923         switch (wdev->iftype) {
13924         case NL80211_IFTYPE_STATION:
13925         case NL80211_IFTYPE_P2P_CLIENT:
13926                 if (wdev->current_bss)
13927                         break;
13928                 err = -ENOTCONN;
13929                 goto out;
13930         default:
13931                 err = -EOPNOTSUPP;
13932                 goto out;
13933         }
13934
13935         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13936
13937  out:
13938         wdev_unlock(wdev);
13939         return err;
13940 }
13941
13942 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13943 {
13944         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13945         struct net_device *dev = info->user_ptr[1];
13946         struct wireless_dev *wdev = dev->ieee80211_ptr;
13947         const u8 *peer;
13948         u8 tsid;
13949         int err;
13950
13951         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13952                 return -EINVAL;
13953
13954         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13955         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13956
13957         wdev_lock(wdev);
13958         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13959         wdev_unlock(wdev);
13960
13961         return err;
13962 }
13963
13964 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13965                                        struct genl_info *info)
13966 {
13967         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13968         struct net_device *dev = info->user_ptr[1];
13969         struct wireless_dev *wdev = dev->ieee80211_ptr;
13970         struct cfg80211_chan_def chandef = {};
13971         const u8 *addr;
13972         u8 oper_class;
13973         int err;
13974
13975         if (!rdev->ops->tdls_channel_switch ||
13976             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13977                 return -EOPNOTSUPP;
13978
13979         switch (dev->ieee80211_ptr->iftype) {
13980         case NL80211_IFTYPE_STATION:
13981         case NL80211_IFTYPE_P2P_CLIENT:
13982                 break;
13983         default:
13984                 return -EOPNOTSUPP;
13985         }
13986
13987         if (!info->attrs[NL80211_ATTR_MAC] ||
13988             !info->attrs[NL80211_ATTR_OPER_CLASS])
13989                 return -EINVAL;
13990
13991         err = nl80211_parse_chandef(rdev, info, &chandef);
13992         if (err)
13993                 return err;
13994
13995         /*
13996          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13997          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13998          * specification is not defined for them.
13999          */
14000         if (chandef.chan->band == NL80211_BAND_2GHZ &&
14001             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14002             chandef.width != NL80211_CHAN_WIDTH_20)
14003                 return -EINVAL;
14004
14005         /* we will be active on the TDLS link */
14006         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14007                                            wdev->iftype))
14008                 return -EINVAL;
14009
14010         /* don't allow switching to DFS channels */
14011         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14012                 return -EINVAL;
14013
14014         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14015         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14016
14017         wdev_lock(wdev);
14018         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14019         wdev_unlock(wdev);
14020
14021         return err;
14022 }
14023
14024 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14025                                               struct genl_info *info)
14026 {
14027         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14028         struct net_device *dev = info->user_ptr[1];
14029         struct wireless_dev *wdev = dev->ieee80211_ptr;
14030         const u8 *addr;
14031
14032         if (!rdev->ops->tdls_channel_switch ||
14033             !rdev->ops->tdls_cancel_channel_switch ||
14034             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14035                 return -EOPNOTSUPP;
14036
14037         switch (dev->ieee80211_ptr->iftype) {
14038         case NL80211_IFTYPE_STATION:
14039         case NL80211_IFTYPE_P2P_CLIENT:
14040                 break;
14041         default:
14042                 return -EOPNOTSUPP;
14043         }
14044
14045         if (!info->attrs[NL80211_ATTR_MAC])
14046                 return -EINVAL;
14047
14048         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14049
14050         wdev_lock(wdev);
14051         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14052         wdev_unlock(wdev);
14053
14054         return 0;
14055 }
14056
14057 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14058                                             struct genl_info *info)
14059 {
14060         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14061         struct net_device *dev = info->user_ptr[1];
14062         struct wireless_dev *wdev = dev->ieee80211_ptr;
14063         const struct nlattr *nla;
14064         bool enabled;
14065
14066         if (!rdev->ops->set_multicast_to_unicast)
14067                 return -EOPNOTSUPP;
14068
14069         if (wdev->iftype != NL80211_IFTYPE_AP &&
14070             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14071                 return -EOPNOTSUPP;
14072
14073         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14074         enabled = nla_get_flag(nla);
14075
14076         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14077 }
14078
14079 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14080 {
14081         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14082         struct net_device *dev = info->user_ptr[1];
14083         struct wireless_dev *wdev = dev->ieee80211_ptr;
14084         struct cfg80211_pmk_conf pmk_conf = {};
14085         int ret;
14086
14087         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14088             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14089                 return -EOPNOTSUPP;
14090
14091         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14092                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14093                 return -EOPNOTSUPP;
14094
14095         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14096                 return -EINVAL;
14097
14098         wdev_lock(wdev);
14099         if (!wdev->current_bss) {
14100                 ret = -ENOTCONN;
14101                 goto out;
14102         }
14103
14104         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14105         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14106                 ret = -EINVAL;
14107                 goto out;
14108         }
14109
14110         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14111         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14112         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14113             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14114                 ret = -EINVAL;
14115                 goto out;
14116         }
14117
14118         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14119                 pmk_conf.pmk_r0_name =
14120                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14121
14122         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14123 out:
14124         wdev_unlock(wdev);
14125         return ret;
14126 }
14127
14128 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14129 {
14130         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14131         struct net_device *dev = info->user_ptr[1];
14132         struct wireless_dev *wdev = dev->ieee80211_ptr;
14133         const u8 *aa;
14134         int ret;
14135
14136         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14137             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14138                 return -EOPNOTSUPP;
14139
14140         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14141                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14142                 return -EOPNOTSUPP;
14143
14144         if (!info->attrs[NL80211_ATTR_MAC])
14145                 return -EINVAL;
14146
14147         wdev_lock(wdev);
14148         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14149         ret = rdev_del_pmk(rdev, dev, aa);
14150         wdev_unlock(wdev);
14151
14152         return ret;
14153 }
14154
14155 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14156 {
14157         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14158         struct net_device *dev = info->user_ptr[1];
14159         struct cfg80211_external_auth_params params;
14160
14161         if (!rdev->ops->external_auth)
14162                 return -EOPNOTSUPP;
14163
14164         if (!info->attrs[NL80211_ATTR_SSID] &&
14165             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14166             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14167                 return -EINVAL;
14168
14169         if (!info->attrs[NL80211_ATTR_BSSID])
14170                 return -EINVAL;
14171
14172         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14173                 return -EINVAL;
14174
14175         memset(&params, 0, sizeof(params));
14176
14177         if (info->attrs[NL80211_ATTR_SSID]) {
14178                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14179                 if (params.ssid.ssid_len == 0)
14180                         return -EINVAL;
14181                 memcpy(params.ssid.ssid,
14182                        nla_data(info->attrs[NL80211_ATTR_SSID]),
14183                        params.ssid.ssid_len);
14184         }
14185
14186         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14187                ETH_ALEN);
14188
14189         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14190
14191         if (info->attrs[NL80211_ATTR_PMKID])
14192                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14193
14194         return rdev_external_auth(rdev, dev, &params);
14195 }
14196
14197 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14198 {
14199         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14200         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14201         struct net_device *dev = info->user_ptr[1];
14202         struct wireless_dev *wdev = dev->ieee80211_ptr;
14203         const u8 *buf;
14204         size_t len;
14205         u8 *dest;
14206         u16 proto;
14207         bool noencrypt;
14208         u64 cookie = 0;
14209         int err;
14210
14211         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14212                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14213                 return -EOPNOTSUPP;
14214
14215         if (!rdev->ops->tx_control_port)
14216                 return -EOPNOTSUPP;
14217
14218         if (!info->attrs[NL80211_ATTR_FRAME] ||
14219             !info->attrs[NL80211_ATTR_MAC] ||
14220             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14221                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14222                 return -EINVAL;
14223         }
14224
14225         wdev_lock(wdev);
14226
14227         switch (wdev->iftype) {
14228         case NL80211_IFTYPE_AP:
14229         case NL80211_IFTYPE_P2P_GO:
14230         case NL80211_IFTYPE_MESH_POINT:
14231                 break;
14232         case NL80211_IFTYPE_ADHOC:
14233         case NL80211_IFTYPE_STATION:
14234         case NL80211_IFTYPE_P2P_CLIENT:
14235                 if (wdev->current_bss)
14236                         break;
14237                 err = -ENOTCONN;
14238                 goto out;
14239         default:
14240                 err = -EOPNOTSUPP;
14241                 goto out;
14242         }
14243
14244         wdev_unlock(wdev);
14245
14246         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14247         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14248         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14249         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14250         noencrypt =
14251                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14252
14253         err = rdev_tx_control_port(rdev, dev, buf, len,
14254                                    dest, cpu_to_be16(proto), noencrypt,
14255                                    dont_wait_for_ack ? NULL : &cookie);
14256         if (!err && !dont_wait_for_ack)
14257                 nl_set_extack_cookie_u64(info->extack, cookie);
14258         return err;
14259  out:
14260         wdev_unlock(wdev);
14261         return err;
14262 }
14263
14264 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14265                                            struct genl_info *info)
14266 {
14267         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14268         struct net_device *dev = info->user_ptr[1];
14269         struct wireless_dev *wdev = dev->ieee80211_ptr;
14270         struct cfg80211_ftm_responder_stats ftm_stats = {};
14271         struct sk_buff *msg;
14272         void *hdr;
14273         struct nlattr *ftm_stats_attr;
14274         int err;
14275
14276         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14277                 return -EOPNOTSUPP;
14278
14279         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14280         if (err)
14281                 return err;
14282
14283         if (!ftm_stats.filled)
14284                 return -ENODATA;
14285
14286         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14287         if (!msg)
14288                 return -ENOMEM;
14289
14290         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14291                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14292         if (!hdr)
14293                 goto nla_put_failure;
14294
14295         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14296                 goto nla_put_failure;
14297
14298         ftm_stats_attr = nla_nest_start_noflag(msg,
14299                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14300         if (!ftm_stats_attr)
14301                 goto nla_put_failure;
14302
14303 #define SET_FTM(field, name, type)                                       \
14304         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14305             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14306                              ftm_stats.field))                           \
14307                 goto nla_put_failure; } while (0)
14308 #define SET_FTM_U64(field, name)                                         \
14309         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14310             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14311                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14312                 goto nla_put_failure; } while (0)
14313
14314         SET_FTM(success_num, SUCCESS_NUM, u32);
14315         SET_FTM(partial_num, PARTIAL_NUM, u32);
14316         SET_FTM(failed_num, FAILED_NUM, u32);
14317         SET_FTM(asap_num, ASAP_NUM, u32);
14318         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14319         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14320         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14321         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14322         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14323 #undef SET_FTM
14324
14325         nla_nest_end(msg, ftm_stats_attr);
14326
14327         genlmsg_end(msg, hdr);
14328         return genlmsg_reply(msg, info);
14329
14330 nla_put_failure:
14331         nlmsg_free(msg);
14332         return -ENOBUFS;
14333 }
14334
14335 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14336 {
14337         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14338         struct cfg80211_update_owe_info owe_info;
14339         struct net_device *dev = info->user_ptr[1];
14340
14341         if (!rdev->ops->update_owe_info)
14342                 return -EOPNOTSUPP;
14343
14344         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14345             !info->attrs[NL80211_ATTR_MAC])
14346                 return -EINVAL;
14347
14348         memset(&owe_info, 0, sizeof(owe_info));
14349         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14350         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14351
14352         if (info->attrs[NL80211_ATTR_IE]) {
14353                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14354                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14355         }
14356
14357         return rdev_update_owe_info(rdev, dev, &owe_info);
14358 }
14359
14360 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14361 {
14362         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14363         struct net_device *dev = info->user_ptr[1];
14364         struct wireless_dev *wdev = dev->ieee80211_ptr;
14365         struct station_info sinfo = {};
14366         const u8 *buf;
14367         size_t len;
14368         u8 *dest;
14369         int err;
14370
14371         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14372                 return -EOPNOTSUPP;
14373
14374         if (!info->attrs[NL80211_ATTR_MAC] ||
14375             !info->attrs[NL80211_ATTR_FRAME]) {
14376                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14377                 return -EINVAL;
14378         }
14379
14380         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14381                 return -EOPNOTSUPP;
14382
14383         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14384         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14385         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14386
14387         if (len < sizeof(struct ethhdr))
14388                 return -EINVAL;
14389
14390         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14391             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14392                 return -EINVAL;
14393
14394         err = rdev_get_station(rdev, dev, dest, &sinfo);
14395         if (err)
14396                 return err;
14397
14398         cfg80211_sinfo_release_content(&sinfo);
14399
14400         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14401 }
14402
14403 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14404                           struct nlattr *attrs[], struct net_device *dev,
14405                           struct cfg80211_tid_cfg *tid_conf,
14406                           struct genl_info *info, const u8 *peer)
14407 {
14408         struct netlink_ext_ack *extack = info->extack;
14409         u64 mask;
14410         int err;
14411
14412         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14413                 return -EINVAL;
14414
14415         tid_conf->config_override =
14416                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14417         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14418
14419         if (tid_conf->config_override) {
14420                 if (rdev->ops->reset_tid_config) {
14421                         err = rdev_reset_tid_config(rdev, dev, peer,
14422                                                     tid_conf->tids);
14423                         if (err)
14424                                 return err;
14425                 } else {
14426                         return -EINVAL;
14427                 }
14428         }
14429
14430         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14431                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14432                 tid_conf->noack =
14433                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14434         }
14435
14436         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14437                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14438                 tid_conf->retry_short =
14439                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14440
14441                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14442                         return -EINVAL;
14443         }
14444
14445         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14446                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14447                 tid_conf->retry_long =
14448                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14449
14450                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14451                         return -EINVAL;
14452         }
14453
14454         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14455                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14456                 tid_conf->ampdu =
14457                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14458         }
14459
14460         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14461                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14462                 tid_conf->rtscts =
14463                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14464         }
14465
14466         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14467                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14468                 tid_conf->amsdu =
14469                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14470         }
14471
14472         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14473                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14474
14475                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14476
14477                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14478                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14479                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14480                                                     &tid_conf->txrate_mask, dev);
14481                         if (err)
14482                                 return err;
14483
14484                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14485                 }
14486                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14487         }
14488
14489         if (peer)
14490                 mask = rdev->wiphy.tid_config_support.peer;
14491         else
14492                 mask = rdev->wiphy.tid_config_support.vif;
14493
14494         if (tid_conf->mask & ~mask) {
14495                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14496                 return -ENOTSUPP;
14497         }
14498
14499         return 0;
14500 }
14501
14502 static int nl80211_set_tid_config(struct sk_buff *skb,
14503                                   struct genl_info *info)
14504 {
14505         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14506         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14507         struct net_device *dev = info->user_ptr[1];
14508         struct cfg80211_tid_config *tid_config;
14509         struct nlattr *tid;
14510         int conf_idx = 0, rem_conf;
14511         int ret = -EINVAL;
14512         u32 num_conf = 0;
14513
14514         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14515                 return -EINVAL;
14516
14517         if (!rdev->ops->set_tid_config)
14518                 return -EOPNOTSUPP;
14519
14520         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14521                             rem_conf)
14522                 num_conf++;
14523
14524         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14525                              GFP_KERNEL);
14526         if (!tid_config)
14527                 return -ENOMEM;
14528
14529         tid_config->n_tid_conf = num_conf;
14530
14531         if (info->attrs[NL80211_ATTR_MAC])
14532                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14533
14534         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14535                             rem_conf) {
14536                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14537                                        tid, NULL, NULL);
14538
14539                 if (ret)
14540                         goto bad_tid_conf;
14541
14542                 ret = parse_tid_conf(rdev, attrs, dev,
14543                                      &tid_config->tid_conf[conf_idx],
14544                                      info, tid_config->peer);
14545                 if (ret)
14546                         goto bad_tid_conf;
14547
14548                 conf_idx++;
14549         }
14550
14551         ret = rdev_set_tid_config(rdev, dev, tid_config);
14552
14553 bad_tid_conf:
14554         kfree(tid_config);
14555         return ret;
14556 }
14557
14558 #define NL80211_FLAG_NEED_WIPHY         0x01
14559 #define NL80211_FLAG_NEED_NETDEV        0x02
14560 #define NL80211_FLAG_NEED_RTNL          0x04
14561 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14562 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14563                                          NL80211_FLAG_CHECK_NETDEV_UP)
14564 #define NL80211_FLAG_NEED_WDEV          0x10
14565 /* If a netdev is associated, it must be UP, P2P must be started */
14566 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14567                                          NL80211_FLAG_CHECK_NETDEV_UP)
14568 #define NL80211_FLAG_CLEAR_SKB          0x20
14569
14570 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14571                             struct genl_info *info)
14572 {
14573         struct cfg80211_registered_device *rdev;
14574         struct wireless_dev *wdev;
14575         struct net_device *dev;
14576         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
14577
14578         if (rtnl)
14579                 rtnl_lock();
14580
14581         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14582                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14583                 if (IS_ERR(rdev)) {
14584                         if (rtnl)
14585                                 rtnl_unlock();
14586                         return PTR_ERR(rdev);
14587                 }
14588                 info->user_ptr[0] = rdev;
14589         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14590                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14591                 ASSERT_RTNL();
14592
14593                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
14594                                                   info->attrs);
14595                 if (IS_ERR(wdev)) {
14596                         if (rtnl)
14597                                 rtnl_unlock();
14598                         return PTR_ERR(wdev);
14599                 }
14600
14601                 dev = wdev->netdev;
14602                 rdev = wiphy_to_rdev(wdev->wiphy);
14603
14604                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14605                         if (!dev) {
14606                                 if (rtnl)
14607                                         rtnl_unlock();
14608                                 return -EINVAL;
14609                         }
14610
14611                         info->user_ptr[1] = dev;
14612                 } else {
14613                         info->user_ptr[1] = wdev;
14614                 }
14615
14616                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14617                     !wdev_running(wdev)) {
14618                         if (rtnl)
14619                                 rtnl_unlock();
14620                         return -ENETDOWN;
14621                 }
14622
14623                 if (dev)
14624                         dev_hold(dev);
14625
14626                 info->user_ptr[0] = rdev;
14627         }
14628
14629         return 0;
14630 }
14631
14632 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14633                               struct genl_info *info)
14634 {
14635         if (info->user_ptr[1]) {
14636                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14637                         struct wireless_dev *wdev = info->user_ptr[1];
14638
14639                         if (wdev->netdev)
14640                                 dev_put(wdev->netdev);
14641                 } else {
14642                         dev_put(info->user_ptr[1]);
14643                 }
14644         }
14645
14646         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14647                 rtnl_unlock();
14648
14649         /* If needed, clear the netlink message payload from the SKB
14650          * as it might contain key data that shouldn't stick around on
14651          * the heap after the SKB is freed. The netlink message header
14652          * is still needed for further processing, so leave it intact.
14653          */
14654         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14655                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14656
14657                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14658         }
14659 }
14660
14661 static const struct genl_ops nl80211_ops[] = {
14662         {
14663                 .cmd = NL80211_CMD_GET_WIPHY,
14664                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14665                 .doit = nl80211_get_wiphy,
14666                 .dumpit = nl80211_dump_wiphy,
14667                 .done = nl80211_dump_wiphy_done,
14668                 /* can be retrieved by unprivileged users */
14669                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14670                                   NL80211_FLAG_NEED_RTNL,
14671         },
14672 };
14673
14674 static const struct genl_small_ops nl80211_small_ops[] = {
14675         {
14676                 .cmd = NL80211_CMD_SET_WIPHY,
14677                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14678                 .doit = nl80211_set_wiphy,
14679                 .flags = GENL_UNS_ADMIN_PERM,
14680                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14681         },
14682         {
14683                 .cmd = NL80211_CMD_GET_INTERFACE,
14684                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14685                 .doit = nl80211_get_interface,
14686                 .dumpit = nl80211_dump_interface,
14687                 /* can be retrieved by unprivileged users */
14688                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14689                                   NL80211_FLAG_NEED_RTNL,
14690         },
14691         {
14692                 .cmd = NL80211_CMD_SET_INTERFACE,
14693                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14694                 .doit = nl80211_set_interface,
14695                 .flags = GENL_UNS_ADMIN_PERM,
14696                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14697                                   NL80211_FLAG_NEED_RTNL,
14698         },
14699         {
14700                 .cmd = NL80211_CMD_NEW_INTERFACE,
14701                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14702                 .doit = nl80211_new_interface,
14703                 .flags = GENL_UNS_ADMIN_PERM,
14704                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14705                                   NL80211_FLAG_NEED_RTNL,
14706         },
14707         {
14708                 .cmd = NL80211_CMD_DEL_INTERFACE,
14709                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14710                 .doit = nl80211_del_interface,
14711                 .flags = GENL_UNS_ADMIN_PERM,
14712                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14713                                   NL80211_FLAG_NEED_RTNL,
14714         },
14715         {
14716                 .cmd = NL80211_CMD_GET_KEY,
14717                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14718                 .doit = nl80211_get_key,
14719                 .flags = GENL_UNS_ADMIN_PERM,
14720                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14721                                   NL80211_FLAG_NEED_RTNL,
14722         },
14723         {
14724                 .cmd = NL80211_CMD_SET_KEY,
14725                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14726                 .doit = nl80211_set_key,
14727                 .flags = GENL_UNS_ADMIN_PERM,
14728                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14729                                   NL80211_FLAG_NEED_RTNL |
14730                                   NL80211_FLAG_CLEAR_SKB,
14731         },
14732         {
14733                 .cmd = NL80211_CMD_NEW_KEY,
14734                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14735                 .doit = nl80211_new_key,
14736                 .flags = GENL_UNS_ADMIN_PERM,
14737                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14738                                   NL80211_FLAG_NEED_RTNL |
14739                                   NL80211_FLAG_CLEAR_SKB,
14740         },
14741         {
14742                 .cmd = NL80211_CMD_DEL_KEY,
14743                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14744                 .doit = nl80211_del_key,
14745                 .flags = GENL_UNS_ADMIN_PERM,
14746                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14747                                   NL80211_FLAG_NEED_RTNL,
14748         },
14749         {
14750                 .cmd = NL80211_CMD_SET_BEACON,
14751                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14752                 .flags = GENL_UNS_ADMIN_PERM,
14753                 .doit = nl80211_set_beacon,
14754                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14755                                   NL80211_FLAG_NEED_RTNL,
14756         },
14757         {
14758                 .cmd = NL80211_CMD_START_AP,
14759                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14760                 .flags = GENL_UNS_ADMIN_PERM,
14761                 .doit = nl80211_start_ap,
14762                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14763                                   NL80211_FLAG_NEED_RTNL,
14764         },
14765         {
14766                 .cmd = NL80211_CMD_STOP_AP,
14767                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14768                 .flags = GENL_UNS_ADMIN_PERM,
14769                 .doit = nl80211_stop_ap,
14770                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14771                                   NL80211_FLAG_NEED_RTNL,
14772         },
14773         {
14774                 .cmd = NL80211_CMD_GET_STATION,
14775                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14776                 .doit = nl80211_get_station,
14777                 .dumpit = nl80211_dump_station,
14778                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14779                                   NL80211_FLAG_NEED_RTNL,
14780         },
14781         {
14782                 .cmd = NL80211_CMD_SET_STATION,
14783                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14784                 .doit = nl80211_set_station,
14785                 .flags = GENL_UNS_ADMIN_PERM,
14786                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14787                                   NL80211_FLAG_NEED_RTNL,
14788         },
14789         {
14790                 .cmd = NL80211_CMD_NEW_STATION,
14791                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14792                 .doit = nl80211_new_station,
14793                 .flags = GENL_UNS_ADMIN_PERM,
14794                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14795                                   NL80211_FLAG_NEED_RTNL,
14796         },
14797         {
14798                 .cmd = NL80211_CMD_DEL_STATION,
14799                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14800                 .doit = nl80211_del_station,
14801                 .flags = GENL_UNS_ADMIN_PERM,
14802                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14803                                   NL80211_FLAG_NEED_RTNL,
14804         },
14805         {
14806                 .cmd = NL80211_CMD_GET_MPATH,
14807                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14808                 .doit = nl80211_get_mpath,
14809                 .dumpit = nl80211_dump_mpath,
14810                 .flags = GENL_UNS_ADMIN_PERM,
14811                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14812                                   NL80211_FLAG_NEED_RTNL,
14813         },
14814         {
14815                 .cmd = NL80211_CMD_GET_MPP,
14816                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14817                 .doit = nl80211_get_mpp,
14818                 .dumpit = nl80211_dump_mpp,
14819                 .flags = GENL_UNS_ADMIN_PERM,
14820                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14821                                   NL80211_FLAG_NEED_RTNL,
14822         },
14823         {
14824                 .cmd = NL80211_CMD_SET_MPATH,
14825                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14826                 .doit = nl80211_set_mpath,
14827                 .flags = GENL_UNS_ADMIN_PERM,
14828                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14829                                   NL80211_FLAG_NEED_RTNL,
14830         },
14831         {
14832                 .cmd = NL80211_CMD_NEW_MPATH,
14833                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14834                 .doit = nl80211_new_mpath,
14835                 .flags = GENL_UNS_ADMIN_PERM,
14836                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14837                                   NL80211_FLAG_NEED_RTNL,
14838         },
14839         {
14840                 .cmd = NL80211_CMD_DEL_MPATH,
14841                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14842                 .doit = nl80211_del_mpath,
14843                 .flags = GENL_UNS_ADMIN_PERM,
14844                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14845                                   NL80211_FLAG_NEED_RTNL,
14846         },
14847         {
14848                 .cmd = NL80211_CMD_SET_BSS,
14849                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14850                 .doit = nl80211_set_bss,
14851                 .flags = GENL_UNS_ADMIN_PERM,
14852                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14853                                   NL80211_FLAG_NEED_RTNL,
14854         },
14855         {
14856                 .cmd = NL80211_CMD_GET_REG,
14857                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14858                 .doit = nl80211_get_reg_do,
14859                 .dumpit = nl80211_get_reg_dump,
14860                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14861                 /* can be retrieved by unprivileged users */
14862         },
14863 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14864         {
14865                 .cmd = NL80211_CMD_SET_REG,
14866                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14867                 .doit = nl80211_set_reg,
14868                 .flags = GENL_ADMIN_PERM,
14869                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14870         },
14871 #endif
14872         {
14873                 .cmd = NL80211_CMD_REQ_SET_REG,
14874                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14875                 .doit = nl80211_req_set_reg,
14876                 .flags = GENL_ADMIN_PERM,
14877         },
14878         {
14879                 .cmd = NL80211_CMD_RELOAD_REGDB,
14880                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14881                 .doit = nl80211_reload_regdb,
14882                 .flags = GENL_ADMIN_PERM,
14883         },
14884         {
14885                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14886                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14887                 .doit = nl80211_get_mesh_config,
14888                 /* can be retrieved by unprivileged users */
14889                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14890                                   NL80211_FLAG_NEED_RTNL,
14891         },
14892         {
14893                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14894                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14895                 .doit = nl80211_update_mesh_config,
14896                 .flags = GENL_UNS_ADMIN_PERM,
14897                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14898                                   NL80211_FLAG_NEED_RTNL,
14899         },
14900         {
14901                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14902                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14903                 .doit = nl80211_trigger_scan,
14904                 .flags = GENL_UNS_ADMIN_PERM,
14905                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14906                                   NL80211_FLAG_NEED_RTNL,
14907         },
14908         {
14909                 .cmd = NL80211_CMD_ABORT_SCAN,
14910                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14911                 .doit = nl80211_abort_scan,
14912                 .flags = GENL_UNS_ADMIN_PERM,
14913                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14914                                   NL80211_FLAG_NEED_RTNL,
14915         },
14916         {
14917                 .cmd = NL80211_CMD_GET_SCAN,
14918                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14919                 .dumpit = nl80211_dump_scan,
14920         },
14921         {
14922                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14923                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14924                 .doit = nl80211_start_sched_scan,
14925                 .flags = GENL_UNS_ADMIN_PERM,
14926                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14927                                   NL80211_FLAG_NEED_RTNL,
14928         },
14929         {
14930                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14931                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14932                 .doit = nl80211_stop_sched_scan,
14933                 .flags = GENL_UNS_ADMIN_PERM,
14934                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14935                                   NL80211_FLAG_NEED_RTNL,
14936         },
14937         {
14938                 .cmd = NL80211_CMD_AUTHENTICATE,
14939                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14940                 .doit = nl80211_authenticate,
14941                 .flags = GENL_UNS_ADMIN_PERM,
14942                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14943                                   NL80211_FLAG_NEED_RTNL |
14944                                   NL80211_FLAG_CLEAR_SKB,
14945         },
14946         {
14947                 .cmd = NL80211_CMD_ASSOCIATE,
14948                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14949                 .doit = nl80211_associate,
14950                 .flags = GENL_UNS_ADMIN_PERM,
14951                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14952                                   NL80211_FLAG_NEED_RTNL |
14953                                   NL80211_FLAG_CLEAR_SKB,
14954         },
14955         {
14956                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14957                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14958                 .doit = nl80211_deauthenticate,
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_DISASSOCIATE,
14965                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14966                 .doit = nl80211_disassociate,
14967                 .flags = GENL_UNS_ADMIN_PERM,
14968                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14969                                   NL80211_FLAG_NEED_RTNL,
14970         },
14971         {
14972                 .cmd = NL80211_CMD_JOIN_IBSS,
14973                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14974                 .doit = nl80211_join_ibss,
14975                 .flags = GENL_UNS_ADMIN_PERM,
14976                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14977                                   NL80211_FLAG_NEED_RTNL,
14978         },
14979         {
14980                 .cmd = NL80211_CMD_LEAVE_IBSS,
14981                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14982                 .doit = nl80211_leave_ibss,
14983                 .flags = GENL_UNS_ADMIN_PERM,
14984                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14985                                   NL80211_FLAG_NEED_RTNL,
14986         },
14987 #ifdef CONFIG_NL80211_TESTMODE
14988         {
14989                 .cmd = NL80211_CMD_TESTMODE,
14990                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14991                 .doit = nl80211_testmode_do,
14992                 .dumpit = nl80211_testmode_dump,
14993                 .flags = GENL_UNS_ADMIN_PERM,
14994                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14995                                   NL80211_FLAG_NEED_RTNL,
14996         },
14997 #endif
14998         {
14999                 .cmd = NL80211_CMD_CONNECT,
15000                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15001                 .doit = nl80211_connect,
15002                 .flags = GENL_UNS_ADMIN_PERM,
15003                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15004                                   NL80211_FLAG_NEED_RTNL |
15005                                   NL80211_FLAG_CLEAR_SKB,
15006         },
15007         {
15008                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15009                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15010                 .doit = nl80211_update_connect_params,
15011                 .flags = GENL_ADMIN_PERM,
15012                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15013                                   NL80211_FLAG_NEED_RTNL |
15014                                   NL80211_FLAG_CLEAR_SKB,
15015         },
15016         {
15017                 .cmd = NL80211_CMD_DISCONNECT,
15018                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15019                 .doit = nl80211_disconnect,
15020                 .flags = GENL_UNS_ADMIN_PERM,
15021                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15022                                   NL80211_FLAG_NEED_RTNL,
15023         },
15024         {
15025                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15026                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15027                 .doit = nl80211_wiphy_netns,
15028                 .flags = GENL_UNS_ADMIN_PERM,
15029                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15030                                   NL80211_FLAG_NEED_RTNL,
15031         },
15032         {
15033                 .cmd = NL80211_CMD_GET_SURVEY,
15034                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15035                 .dumpit = nl80211_dump_survey,
15036         },
15037         {
15038                 .cmd = NL80211_CMD_SET_PMKSA,
15039                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15040                 .doit = nl80211_setdel_pmksa,
15041                 .flags = GENL_UNS_ADMIN_PERM,
15042                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15043                                   NL80211_FLAG_NEED_RTNL |
15044                                   NL80211_FLAG_CLEAR_SKB,
15045         },
15046         {
15047                 .cmd = NL80211_CMD_DEL_PMKSA,
15048                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15049                 .doit = nl80211_setdel_pmksa,
15050                 .flags = GENL_UNS_ADMIN_PERM,
15051                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15052                                   NL80211_FLAG_NEED_RTNL,
15053         },
15054         {
15055                 .cmd = NL80211_CMD_FLUSH_PMKSA,
15056                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15057                 .doit = nl80211_flush_pmksa,
15058                 .flags = GENL_UNS_ADMIN_PERM,
15059                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15060                                   NL80211_FLAG_NEED_RTNL,
15061         },
15062         {
15063                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15064                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15065                 .doit = nl80211_remain_on_channel,
15066                 .flags = GENL_UNS_ADMIN_PERM,
15067                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15068                                   NL80211_FLAG_NEED_RTNL,
15069         },
15070         {
15071                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15072                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15073                 .doit = nl80211_cancel_remain_on_channel,
15074                 .flags = GENL_UNS_ADMIN_PERM,
15075                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15076                                   NL80211_FLAG_NEED_RTNL,
15077         },
15078         {
15079                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15080                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15081                 .doit = nl80211_set_tx_bitrate_mask,
15082                 .flags = GENL_UNS_ADMIN_PERM,
15083                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15084                                   NL80211_FLAG_NEED_RTNL,
15085         },
15086         {
15087                 .cmd = NL80211_CMD_REGISTER_FRAME,
15088                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15089                 .doit = nl80211_register_mgmt,
15090                 .flags = GENL_UNS_ADMIN_PERM,
15091                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15092                                   NL80211_FLAG_NEED_RTNL,
15093         },
15094         {
15095                 .cmd = NL80211_CMD_FRAME,
15096                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15097                 .doit = nl80211_tx_mgmt,
15098                 .flags = GENL_UNS_ADMIN_PERM,
15099                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15100                                   NL80211_FLAG_NEED_RTNL,
15101         },
15102         {
15103                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15104                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15105                 .doit = nl80211_tx_mgmt_cancel_wait,
15106                 .flags = GENL_UNS_ADMIN_PERM,
15107                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15108                                   NL80211_FLAG_NEED_RTNL,
15109         },
15110         {
15111                 .cmd = NL80211_CMD_SET_POWER_SAVE,
15112                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15113                 .doit = nl80211_set_power_save,
15114                 .flags = GENL_UNS_ADMIN_PERM,
15115                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15116                                   NL80211_FLAG_NEED_RTNL,
15117         },
15118         {
15119                 .cmd = NL80211_CMD_GET_POWER_SAVE,
15120                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15121                 .doit = nl80211_get_power_save,
15122                 /* can be retrieved by unprivileged users */
15123                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15124                                   NL80211_FLAG_NEED_RTNL,
15125         },
15126         {
15127                 .cmd = NL80211_CMD_SET_CQM,
15128                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15129                 .doit = nl80211_set_cqm,
15130                 .flags = GENL_UNS_ADMIN_PERM,
15131                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15132                                   NL80211_FLAG_NEED_RTNL,
15133         },
15134         {
15135                 .cmd = NL80211_CMD_SET_CHANNEL,
15136                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15137                 .doit = nl80211_set_channel,
15138                 .flags = GENL_UNS_ADMIN_PERM,
15139                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15140                                   NL80211_FLAG_NEED_RTNL,
15141         },
15142         {
15143                 .cmd = NL80211_CMD_SET_WDS_PEER,
15144                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15145                 .doit = nl80211_set_wds_peer,
15146                 .flags = GENL_UNS_ADMIN_PERM,
15147                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15148                                   NL80211_FLAG_NEED_RTNL,
15149         },
15150         {
15151                 .cmd = NL80211_CMD_JOIN_MESH,
15152                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15153                 .doit = nl80211_join_mesh,
15154                 .flags = GENL_UNS_ADMIN_PERM,
15155                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15156                                   NL80211_FLAG_NEED_RTNL,
15157         },
15158         {
15159                 .cmd = NL80211_CMD_LEAVE_MESH,
15160                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15161                 .doit = nl80211_leave_mesh,
15162                 .flags = GENL_UNS_ADMIN_PERM,
15163                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15164                                   NL80211_FLAG_NEED_RTNL,
15165         },
15166         {
15167                 .cmd = NL80211_CMD_JOIN_OCB,
15168                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15169                 .doit = nl80211_join_ocb,
15170                 .flags = GENL_UNS_ADMIN_PERM,
15171                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15172                                   NL80211_FLAG_NEED_RTNL,
15173         },
15174         {
15175                 .cmd = NL80211_CMD_LEAVE_OCB,
15176                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15177                 .doit = nl80211_leave_ocb,
15178                 .flags = GENL_UNS_ADMIN_PERM,
15179                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15180                                   NL80211_FLAG_NEED_RTNL,
15181         },
15182 #ifdef CONFIG_PM
15183         {
15184                 .cmd = NL80211_CMD_GET_WOWLAN,
15185                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15186                 .doit = nl80211_get_wowlan,
15187                 /* can be retrieved by unprivileged users */
15188                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15189                                   NL80211_FLAG_NEED_RTNL,
15190         },
15191         {
15192                 .cmd = NL80211_CMD_SET_WOWLAN,
15193                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15194                 .doit = nl80211_set_wowlan,
15195                 .flags = GENL_UNS_ADMIN_PERM,
15196                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15197                                   NL80211_FLAG_NEED_RTNL,
15198         },
15199 #endif
15200         {
15201                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15202                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15203                 .doit = nl80211_set_rekey_data,
15204                 .flags = GENL_UNS_ADMIN_PERM,
15205                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15206                                   NL80211_FLAG_NEED_RTNL |
15207                                   NL80211_FLAG_CLEAR_SKB,
15208         },
15209         {
15210                 .cmd = NL80211_CMD_TDLS_MGMT,
15211                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15212                 .doit = nl80211_tdls_mgmt,
15213                 .flags = GENL_UNS_ADMIN_PERM,
15214                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15215                                   NL80211_FLAG_NEED_RTNL,
15216         },
15217         {
15218                 .cmd = NL80211_CMD_TDLS_OPER,
15219                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15220                 .doit = nl80211_tdls_oper,
15221                 .flags = GENL_UNS_ADMIN_PERM,
15222                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15223                                   NL80211_FLAG_NEED_RTNL,
15224         },
15225         {
15226                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15227                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15228                 .doit = nl80211_register_unexpected_frame,
15229                 .flags = GENL_UNS_ADMIN_PERM,
15230                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15231                                   NL80211_FLAG_NEED_RTNL,
15232         },
15233         {
15234                 .cmd = NL80211_CMD_PROBE_CLIENT,
15235                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15236                 .doit = nl80211_probe_client,
15237                 .flags = GENL_UNS_ADMIN_PERM,
15238                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15239                                   NL80211_FLAG_NEED_RTNL,
15240         },
15241         {
15242                 .cmd = NL80211_CMD_REGISTER_BEACONS,
15243                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15244                 .doit = nl80211_register_beacons,
15245                 .flags = GENL_UNS_ADMIN_PERM,
15246                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15247                                   NL80211_FLAG_NEED_RTNL,
15248         },
15249         {
15250                 .cmd = NL80211_CMD_SET_NOACK_MAP,
15251                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15252                 .doit = nl80211_set_noack_map,
15253                 .flags = GENL_UNS_ADMIN_PERM,
15254                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15255                                   NL80211_FLAG_NEED_RTNL,
15256         },
15257         {
15258                 .cmd = NL80211_CMD_START_P2P_DEVICE,
15259                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15260                 .doit = nl80211_start_p2p_device,
15261                 .flags = GENL_UNS_ADMIN_PERM,
15262                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15263                                   NL80211_FLAG_NEED_RTNL,
15264         },
15265         {
15266                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15267                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15268                 .doit = nl80211_stop_p2p_device,
15269                 .flags = GENL_UNS_ADMIN_PERM,
15270                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15271                                   NL80211_FLAG_NEED_RTNL,
15272         },
15273         {
15274                 .cmd = NL80211_CMD_START_NAN,
15275                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15276                 .doit = nl80211_start_nan,
15277                 .flags = GENL_ADMIN_PERM,
15278                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15279                                   NL80211_FLAG_NEED_RTNL,
15280         },
15281         {
15282                 .cmd = NL80211_CMD_STOP_NAN,
15283                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15284                 .doit = nl80211_stop_nan,
15285                 .flags = GENL_ADMIN_PERM,
15286                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15287                                   NL80211_FLAG_NEED_RTNL,
15288         },
15289         {
15290                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15291                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15292                 .doit = nl80211_nan_add_func,
15293                 .flags = GENL_ADMIN_PERM,
15294                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15295                                   NL80211_FLAG_NEED_RTNL,
15296         },
15297         {
15298                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15299                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15300                 .doit = nl80211_nan_del_func,
15301                 .flags = GENL_ADMIN_PERM,
15302                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15303                                   NL80211_FLAG_NEED_RTNL,
15304         },
15305         {
15306                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15307                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15308                 .doit = nl80211_nan_change_config,
15309                 .flags = GENL_ADMIN_PERM,
15310                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15311                                   NL80211_FLAG_NEED_RTNL,
15312         },
15313         {
15314                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15315                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15316                 .doit = nl80211_set_mcast_rate,
15317                 .flags = GENL_UNS_ADMIN_PERM,
15318                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15319                                   NL80211_FLAG_NEED_RTNL,
15320         },
15321         {
15322                 .cmd = NL80211_CMD_SET_MAC_ACL,
15323                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15324                 .doit = nl80211_set_mac_acl,
15325                 .flags = GENL_UNS_ADMIN_PERM,
15326                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15327                                   NL80211_FLAG_NEED_RTNL,
15328         },
15329         {
15330                 .cmd = NL80211_CMD_RADAR_DETECT,
15331                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15332                 .doit = nl80211_start_radar_detection,
15333                 .flags = GENL_UNS_ADMIN_PERM,
15334                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15335                                   NL80211_FLAG_NEED_RTNL,
15336         },
15337         {
15338                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15339                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15340                 .doit = nl80211_get_protocol_features,
15341         },
15342         {
15343                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15344                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15345                 .doit = nl80211_update_ft_ies,
15346                 .flags = GENL_UNS_ADMIN_PERM,
15347                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15348                                   NL80211_FLAG_NEED_RTNL,
15349         },
15350         {
15351                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15352                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15353                 .doit = nl80211_crit_protocol_start,
15354                 .flags = GENL_UNS_ADMIN_PERM,
15355                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15356                                   NL80211_FLAG_NEED_RTNL,
15357         },
15358         {
15359                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15360                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15361                 .doit = nl80211_crit_protocol_stop,
15362                 .flags = GENL_UNS_ADMIN_PERM,
15363                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15364                                   NL80211_FLAG_NEED_RTNL,
15365         },
15366         {
15367                 .cmd = NL80211_CMD_GET_COALESCE,
15368                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15369                 .doit = nl80211_get_coalesce,
15370                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15371                                   NL80211_FLAG_NEED_RTNL,
15372         },
15373         {
15374                 .cmd = NL80211_CMD_SET_COALESCE,
15375                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15376                 .doit = nl80211_set_coalesce,
15377                 .flags = GENL_UNS_ADMIN_PERM,
15378                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15379                                   NL80211_FLAG_NEED_RTNL,
15380         },
15381         {
15382                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15383                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15384                 .doit = nl80211_channel_switch,
15385                 .flags = GENL_UNS_ADMIN_PERM,
15386                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15387                                   NL80211_FLAG_NEED_RTNL,
15388         },
15389         {
15390                 .cmd = NL80211_CMD_VENDOR,
15391                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15392                 .doit = nl80211_vendor_cmd,
15393                 .dumpit = nl80211_vendor_cmd_dump,
15394                 .flags = GENL_UNS_ADMIN_PERM,
15395                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15396                                   NL80211_FLAG_NEED_RTNL |
15397                                   NL80211_FLAG_CLEAR_SKB,
15398         },
15399         {
15400                 .cmd = NL80211_CMD_SET_QOS_MAP,
15401                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15402                 .doit = nl80211_set_qos_map,
15403                 .flags = GENL_UNS_ADMIN_PERM,
15404                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15405                                   NL80211_FLAG_NEED_RTNL,
15406         },
15407         {
15408                 .cmd = NL80211_CMD_ADD_TX_TS,
15409                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15410                 .doit = nl80211_add_tx_ts,
15411                 .flags = GENL_UNS_ADMIN_PERM,
15412                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15413                                   NL80211_FLAG_NEED_RTNL,
15414         },
15415         {
15416                 .cmd = NL80211_CMD_DEL_TX_TS,
15417                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15418                 .doit = nl80211_del_tx_ts,
15419                 .flags = GENL_UNS_ADMIN_PERM,
15420                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15421                                   NL80211_FLAG_NEED_RTNL,
15422         },
15423         {
15424                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15425                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15426                 .doit = nl80211_tdls_channel_switch,
15427                 .flags = GENL_UNS_ADMIN_PERM,
15428                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15429                                   NL80211_FLAG_NEED_RTNL,
15430         },
15431         {
15432                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15433                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15434                 .doit = nl80211_tdls_cancel_channel_switch,
15435                 .flags = GENL_UNS_ADMIN_PERM,
15436                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15437                                   NL80211_FLAG_NEED_RTNL,
15438         },
15439         {
15440                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15441                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15442                 .doit = nl80211_set_multicast_to_unicast,
15443                 .flags = GENL_UNS_ADMIN_PERM,
15444                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15445                                   NL80211_FLAG_NEED_RTNL,
15446         },
15447         {
15448                 .cmd = NL80211_CMD_SET_PMK,
15449                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15450                 .doit = nl80211_set_pmk,
15451                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15452                                   NL80211_FLAG_NEED_RTNL |
15453                                   NL80211_FLAG_CLEAR_SKB,
15454         },
15455         {
15456                 .cmd = NL80211_CMD_DEL_PMK,
15457                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15458                 .doit = nl80211_del_pmk,
15459                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15460                                   NL80211_FLAG_NEED_RTNL,
15461         },
15462         {
15463                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15464                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15465                 .doit = nl80211_external_auth,
15466                 .flags = GENL_ADMIN_PERM,
15467                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15468                                   NL80211_FLAG_NEED_RTNL,
15469         },
15470         {
15471                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15472                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15473                 .doit = nl80211_tx_control_port,
15474                 .flags = GENL_UNS_ADMIN_PERM,
15475                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15476                                   NL80211_FLAG_NEED_RTNL,
15477         },
15478         {
15479                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15480                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15481                 .doit = nl80211_get_ftm_responder_stats,
15482                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15483                                   NL80211_FLAG_NEED_RTNL,
15484         },
15485         {
15486                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15487                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15488                 .doit = nl80211_pmsr_start,
15489                 .flags = GENL_UNS_ADMIN_PERM,
15490                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15491                                   NL80211_FLAG_NEED_RTNL,
15492         },
15493         {
15494                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15495                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15496                 .doit = nl80211_notify_radar_detection,
15497                 .flags = GENL_UNS_ADMIN_PERM,
15498                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15499                                   NL80211_FLAG_NEED_RTNL,
15500         },
15501         {
15502                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15503                 .doit = nl80211_update_owe_info,
15504                 .flags = GENL_ADMIN_PERM,
15505                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15506                                   NL80211_FLAG_NEED_RTNL,
15507         },
15508         {
15509                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15510                 .doit = nl80211_probe_mesh_link,
15511                 .flags = GENL_UNS_ADMIN_PERM,
15512                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15513                                   NL80211_FLAG_NEED_RTNL,
15514         },
15515         {
15516                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15517                 .doit = nl80211_set_tid_config,
15518                 .flags = GENL_UNS_ADMIN_PERM,
15519                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15520                                   NL80211_FLAG_NEED_RTNL,
15521         },
15522 };
15523
15524 static struct genl_family nl80211_fam __ro_after_init = {
15525         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15526         .hdrsize = 0,                   /* no private header */
15527         .version = 1,                   /* no particular meaning now */
15528         .maxattr = NL80211_ATTR_MAX,
15529         .policy = nl80211_policy,
15530         .netnsok = true,
15531         .pre_doit = nl80211_pre_doit,
15532         .post_doit = nl80211_post_doit,
15533         .module = THIS_MODULE,
15534         .ops = nl80211_ops,
15535         .n_ops = ARRAY_SIZE(nl80211_ops),
15536         .small_ops = nl80211_small_ops,
15537         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15538         .mcgrps = nl80211_mcgrps,
15539         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15540         .parallel_ops = true,
15541 };
15542
15543 /* notification functions */
15544
15545 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15546                           enum nl80211_commands cmd)
15547 {
15548         struct sk_buff *msg;
15549         struct nl80211_dump_wiphy_state state = {};
15550
15551         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15552                 cmd != NL80211_CMD_DEL_WIPHY);
15553
15554         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15555         if (!msg)
15556                 return;
15557
15558         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15559                 nlmsg_free(msg);
15560                 return;
15561         }
15562
15563         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15564                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15565 }
15566
15567 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15568                                 struct wireless_dev *wdev,
15569                                 enum nl80211_commands cmd)
15570 {
15571         struct sk_buff *msg;
15572
15573         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15574         if (!msg)
15575                 return;
15576
15577         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15578                 nlmsg_free(msg);
15579                 return;
15580         }
15581
15582         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15583                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15584 }
15585
15586 static int nl80211_add_scan_req(struct sk_buff *msg,
15587                                 struct cfg80211_registered_device *rdev)
15588 {
15589         struct cfg80211_scan_request *req = rdev->scan_req;
15590         struct nlattr *nest;
15591         int i;
15592         struct cfg80211_scan_info *info;
15593
15594         if (WARN_ON(!req))
15595                 return 0;
15596
15597         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15598         if (!nest)
15599                 goto nla_put_failure;
15600         for (i = 0; i < req->n_ssids; i++) {
15601                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15602                         goto nla_put_failure;
15603         }
15604         nla_nest_end(msg, nest);
15605
15606         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15607                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15608                 if (!nest)
15609                         goto nla_put_failure;
15610                 for (i = 0; i < req->n_channels; i++) {
15611                         if (nla_put_u32(msg, i,
15612                                    ieee80211_channel_to_khz(req->channels[i])))
15613                                 goto nla_put_failure;
15614                 }
15615                 nla_nest_end(msg, nest);
15616         } else {
15617                 nest = nla_nest_start_noflag(msg,
15618                                              NL80211_ATTR_SCAN_FREQUENCIES);
15619                 if (!nest)
15620                         goto nla_put_failure;
15621                 for (i = 0; i < req->n_channels; i++) {
15622                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15623                                 goto nla_put_failure;
15624                 }
15625                 nla_nest_end(msg, nest);
15626         }
15627
15628         if (req->ie &&
15629             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15630                 goto nla_put_failure;
15631
15632         if (req->flags &&
15633             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15634                 goto nla_put_failure;
15635
15636         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15637                 &rdev->scan_req->info;
15638         if (info->scan_start_tsf &&
15639             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15640                                info->scan_start_tsf, NL80211_BSS_PAD) ||
15641              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15642                      info->tsf_bssid)))
15643                 goto nla_put_failure;
15644
15645         return 0;
15646  nla_put_failure:
15647         return -ENOBUFS;
15648 }
15649
15650 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15651                                  struct cfg80211_registered_device *rdev,
15652                                  struct wireless_dev *wdev,
15653                                  u32 portid, u32 seq, int flags,
15654                                  u32 cmd)
15655 {
15656         void *hdr;
15657
15658         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15659         if (!hdr)
15660                 return -1;
15661
15662         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15663             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15664                                          wdev->netdev->ifindex)) ||
15665             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15666                               NL80211_ATTR_PAD))
15667                 goto nla_put_failure;
15668
15669         /* ignore errors and send incomplete event anyway */
15670         nl80211_add_scan_req(msg, rdev);
15671
15672         genlmsg_end(msg, hdr);
15673         return 0;
15674
15675  nla_put_failure:
15676         genlmsg_cancel(msg, hdr);
15677         return -EMSGSIZE;
15678 }
15679
15680 static int
15681 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15682                             struct cfg80211_sched_scan_request *req, u32 cmd)
15683 {
15684         void *hdr;
15685
15686         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15687         if (!hdr)
15688                 return -1;
15689
15690         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15691                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15692             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15693             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15694                               NL80211_ATTR_PAD))
15695                 goto nla_put_failure;
15696
15697         genlmsg_end(msg, hdr);
15698         return 0;
15699
15700  nla_put_failure:
15701         genlmsg_cancel(msg, hdr);
15702         return -EMSGSIZE;
15703 }
15704
15705 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15706                              struct wireless_dev *wdev)
15707 {
15708         struct sk_buff *msg;
15709
15710         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15711         if (!msg)
15712                 return;
15713
15714         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15715                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15716                 nlmsg_free(msg);
15717                 return;
15718         }
15719
15720         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15721                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15722 }
15723
15724 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15725                                        struct wireless_dev *wdev, bool aborted)
15726 {
15727         struct sk_buff *msg;
15728
15729         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15730         if (!msg)
15731                 return NULL;
15732
15733         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15734                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15735                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15736                 nlmsg_free(msg);
15737                 return NULL;
15738         }
15739
15740         return msg;
15741 }
15742
15743 /* send message created by nl80211_build_scan_msg() */
15744 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15745                            struct sk_buff *msg)
15746 {
15747         if (!msg)
15748                 return;
15749
15750         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15751                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15752 }
15753
15754 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
15755 {
15756         struct sk_buff *msg;
15757
15758         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15759         if (!msg)
15760                 return;
15761
15762         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
15763                 nlmsg_free(msg);
15764                 return;
15765         }
15766
15767         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
15768                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15769 }
15770
15771 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
15772                                           struct regulatory_request *request)
15773 {
15774         /* Userspace can always count this one always being set */
15775         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
15776                 goto nla_put_failure;
15777
15778         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
15779                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15780                                NL80211_REGDOM_TYPE_WORLD))
15781                         goto nla_put_failure;
15782         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15783                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15784                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15785                         goto nla_put_failure;
15786         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15787                    request->intersect) {
15788                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15789                                NL80211_REGDOM_TYPE_INTERSECTION))
15790                         goto nla_put_failure;
15791         } else {
15792                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15793                                NL80211_REGDOM_TYPE_COUNTRY) ||
15794                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15795                                    request->alpha2))
15796                         goto nla_put_failure;
15797         }
15798
15799         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15800                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15801
15802                 if (wiphy &&
15803                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15804                         goto nla_put_failure;
15805
15806                 if (wiphy &&
15807                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15808                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15809                         goto nla_put_failure;
15810         }
15811
15812         return true;
15813
15814 nla_put_failure:
15815         return false;
15816 }
15817
15818 /*
15819  * This can happen on global regulatory changes or device specific settings
15820  * based on custom regulatory domains.
15821  */
15822 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15823                                      struct regulatory_request *request)
15824 {
15825         struct sk_buff *msg;
15826         void *hdr;
15827
15828         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15829         if (!msg)
15830                 return;
15831
15832         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15833         if (!hdr)
15834                 goto nla_put_failure;
15835
15836         if (!nl80211_reg_change_event_fill(msg, request))
15837                 goto nla_put_failure;
15838
15839         genlmsg_end(msg, hdr);
15840
15841         rcu_read_lock();
15842         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15843                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15844         rcu_read_unlock();
15845
15846         return;
15847
15848 nla_put_failure:
15849         nlmsg_free(msg);
15850 }
15851
15852 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15853                                     struct net_device *netdev,
15854                                     const u8 *buf, size_t len,
15855                                     enum nl80211_commands cmd, gfp_t gfp,
15856                                     int uapsd_queues, const u8 *req_ies,
15857                                     size_t req_ies_len)
15858 {
15859         struct sk_buff *msg;
15860         void *hdr;
15861
15862         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15863         if (!msg)
15864                 return;
15865
15866         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15867         if (!hdr) {
15868                 nlmsg_free(msg);
15869                 return;
15870         }
15871
15872         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15873             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15874             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15875             (req_ies &&
15876              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15877                 goto nla_put_failure;
15878
15879         if (uapsd_queues >= 0) {
15880                 struct nlattr *nla_wmm =
15881                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15882                 if (!nla_wmm)
15883                         goto nla_put_failure;
15884
15885                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15886                                uapsd_queues))
15887                         goto nla_put_failure;
15888
15889                 nla_nest_end(msg, nla_wmm);
15890         }
15891
15892         genlmsg_end(msg, hdr);
15893
15894         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15895                                 NL80211_MCGRP_MLME, gfp);
15896         return;
15897
15898  nla_put_failure:
15899         nlmsg_free(msg);
15900 }
15901
15902 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15903                           struct net_device *netdev, const u8 *buf,
15904                           size_t len, gfp_t gfp)
15905 {
15906         nl80211_send_mlme_event(rdev, netdev, buf, len,
15907                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15908 }
15909
15910 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15911                            struct net_device *netdev, const u8 *buf,
15912                            size_t len, gfp_t gfp, int uapsd_queues,
15913                            const u8 *req_ies, size_t req_ies_len)
15914 {
15915         nl80211_send_mlme_event(rdev, netdev, buf, len,
15916                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15917                                 req_ies, req_ies_len);
15918 }
15919
15920 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15921                          struct net_device *netdev, const u8 *buf,
15922                          size_t len, gfp_t gfp)
15923 {
15924         nl80211_send_mlme_event(rdev, netdev, buf, len,
15925                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15926 }
15927
15928 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15929                            struct net_device *netdev, const u8 *buf,
15930                            size_t len, gfp_t gfp)
15931 {
15932         nl80211_send_mlme_event(rdev, netdev, buf, len,
15933                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15934 }
15935
15936 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15937                                   size_t len)
15938 {
15939         struct wireless_dev *wdev = dev->ieee80211_ptr;
15940         struct wiphy *wiphy = wdev->wiphy;
15941         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15942         const struct ieee80211_mgmt *mgmt = (void *)buf;
15943         u32 cmd;
15944
15945         if (WARN_ON(len < 2))
15946                 return;
15947
15948         if (ieee80211_is_deauth(mgmt->frame_control)) {
15949                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15950         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
15951                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15952         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
15953                 if (wdev->unprot_beacon_reported &&
15954                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
15955                         return;
15956                 cmd = NL80211_CMD_UNPROT_BEACON;
15957                 wdev->unprot_beacon_reported = jiffies;
15958         } else {
15959                 return;
15960         }
15961
15962         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15963         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15964                                 NULL, 0);
15965 }
15966 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15967
15968 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15969                                       struct net_device *netdev, int cmd,
15970                                       const u8 *addr, gfp_t gfp)
15971 {
15972         struct sk_buff *msg;
15973         void *hdr;
15974
15975         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15976         if (!msg)
15977                 return;
15978
15979         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15980         if (!hdr) {
15981                 nlmsg_free(msg);
15982                 return;
15983         }
15984
15985         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15986             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15987             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15988             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15989                 goto nla_put_failure;
15990
15991         genlmsg_end(msg, hdr);
15992
15993         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15994                                 NL80211_MCGRP_MLME, gfp);
15995         return;
15996
15997  nla_put_failure:
15998         nlmsg_free(msg);
15999 }
16000
16001 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16002                                struct net_device *netdev, const u8 *addr,
16003                                gfp_t gfp)
16004 {
16005         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16006                                   addr, gfp);
16007 }
16008
16009 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16010                                 struct net_device *netdev, const u8 *addr,
16011                                 gfp_t gfp)
16012 {
16013         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16014                                   addr, gfp);
16015 }
16016
16017 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16018                                  struct net_device *netdev,
16019                                  struct cfg80211_connect_resp_params *cr,
16020                                  gfp_t gfp)
16021 {
16022         struct sk_buff *msg;
16023         void *hdr;
16024
16025         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16026                         cr->fils.kek_len + cr->fils.pmk_len +
16027                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16028         if (!msg)
16029                 return;
16030
16031         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16032         if (!hdr) {
16033                 nlmsg_free(msg);
16034                 return;
16035         }
16036
16037         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16038             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16039             (cr->bssid &&
16040              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16041             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16042                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16043                         cr->status) ||
16044             (cr->status < 0 &&
16045              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16046               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16047                           cr->timeout_reason))) ||
16048             (cr->req_ie &&
16049              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16050             (cr->resp_ie &&
16051              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16052                      cr->resp_ie)) ||
16053             (cr->fils.update_erp_next_seq_num &&
16054              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16055                          cr->fils.erp_next_seq_num)) ||
16056             (cr->status == WLAN_STATUS_SUCCESS &&
16057              ((cr->fils.kek &&
16058                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16059                        cr->fils.kek)) ||
16060               (cr->fils.pmk &&
16061                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16062               (cr->fils.pmkid &&
16063                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16064                 goto nla_put_failure;
16065
16066         genlmsg_end(msg, hdr);
16067
16068         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16069                                 NL80211_MCGRP_MLME, gfp);
16070         return;
16071
16072  nla_put_failure:
16073         nlmsg_free(msg);
16074 }
16075
16076 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16077                          struct net_device *netdev,
16078                          struct cfg80211_roam_info *info, gfp_t gfp)
16079 {
16080         struct sk_buff *msg;
16081         void *hdr;
16082         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16083
16084         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16085                         info->fils.kek_len + info->fils.pmk_len +
16086                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16087         if (!msg)
16088                 return;
16089
16090         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16091         if (!hdr) {
16092                 nlmsg_free(msg);
16093                 return;
16094         }
16095
16096         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16097             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16098             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16099             (info->req_ie &&
16100              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16101                      info->req_ie)) ||
16102             (info->resp_ie &&
16103              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16104                      info->resp_ie)) ||
16105             (info->fils.update_erp_next_seq_num &&
16106              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16107                          info->fils.erp_next_seq_num)) ||
16108             (info->fils.kek &&
16109              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16110                      info->fils.kek)) ||
16111             (info->fils.pmk &&
16112              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16113             (info->fils.pmkid &&
16114              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16115                 goto nla_put_failure;
16116
16117         genlmsg_end(msg, hdr);
16118
16119         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16120                                 NL80211_MCGRP_MLME, gfp);
16121         return;
16122
16123  nla_put_failure:
16124         nlmsg_free(msg);
16125 }
16126
16127 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16128                                   struct net_device *netdev, const u8 *bssid)
16129 {
16130         struct sk_buff *msg;
16131         void *hdr;
16132
16133         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16134         if (!msg)
16135                 return;
16136
16137         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16138         if (!hdr) {
16139                 nlmsg_free(msg);
16140                 return;
16141         }
16142
16143         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16144             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16145             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16146                 goto nla_put_failure;
16147
16148         genlmsg_end(msg, hdr);
16149
16150         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16151                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16152         return;
16153
16154  nla_put_failure:
16155         nlmsg_free(msg);
16156 }
16157
16158 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16159                                struct net_device *netdev, u16 reason,
16160                                const u8 *ie, size_t ie_len, bool from_ap)
16161 {
16162         struct sk_buff *msg;
16163         void *hdr;
16164
16165         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16166         if (!msg)
16167                 return;
16168
16169         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16170         if (!hdr) {
16171                 nlmsg_free(msg);
16172                 return;
16173         }
16174
16175         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16176             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16177             (reason &&
16178              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16179             (from_ap &&
16180              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16181             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16182                 goto nla_put_failure;
16183
16184         genlmsg_end(msg, hdr);
16185
16186         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16187                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16188         return;
16189
16190  nla_put_failure:
16191         nlmsg_free(msg);
16192 }
16193
16194 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16195                              struct net_device *netdev, const u8 *bssid,
16196                              gfp_t gfp)
16197 {
16198         struct sk_buff *msg;
16199         void *hdr;
16200
16201         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16202         if (!msg)
16203                 return;
16204
16205         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16206         if (!hdr) {
16207                 nlmsg_free(msg);
16208                 return;
16209         }
16210
16211         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16212             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16213             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16214                 goto nla_put_failure;
16215
16216         genlmsg_end(msg, hdr);
16217
16218         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16219                                 NL80211_MCGRP_MLME, gfp);
16220         return;
16221
16222  nla_put_failure:
16223         nlmsg_free(msg);
16224 }
16225
16226 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16227                                         const u8 *ie, u8 ie_len,
16228                                         int sig_dbm, gfp_t gfp)
16229 {
16230         struct wireless_dev *wdev = dev->ieee80211_ptr;
16231         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16232         struct sk_buff *msg;
16233         void *hdr;
16234
16235         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16236                 return;
16237
16238         trace_cfg80211_notify_new_peer_candidate(dev, addr);
16239
16240         msg = nlmsg_new(100 + ie_len, gfp);
16241         if (!msg)
16242                 return;
16243
16244         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16245         if (!hdr) {
16246                 nlmsg_free(msg);
16247                 return;
16248         }
16249
16250         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16251             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16252             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16253             (ie_len && ie &&
16254              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16255             (sig_dbm &&
16256              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16257                 goto nla_put_failure;
16258
16259         genlmsg_end(msg, hdr);
16260
16261         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16262                                 NL80211_MCGRP_MLME, gfp);
16263         return;
16264
16265  nla_put_failure:
16266         nlmsg_free(msg);
16267 }
16268 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16269
16270 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16271                                  struct net_device *netdev, const u8 *addr,
16272                                  enum nl80211_key_type key_type, int key_id,
16273                                  const u8 *tsc, gfp_t gfp)
16274 {
16275         struct sk_buff *msg;
16276         void *hdr;
16277
16278         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16279         if (!msg)
16280                 return;
16281
16282         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16283         if (!hdr) {
16284                 nlmsg_free(msg);
16285                 return;
16286         }
16287
16288         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16289             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16290             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16291             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16292             (key_id != -1 &&
16293              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16294             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16295                 goto nla_put_failure;
16296
16297         genlmsg_end(msg, hdr);
16298
16299         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16300                                 NL80211_MCGRP_MLME, gfp);
16301         return;
16302
16303  nla_put_failure:
16304         nlmsg_free(msg);
16305 }
16306
16307 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16308                                     struct ieee80211_channel *channel_before,
16309                                     struct ieee80211_channel *channel_after)
16310 {
16311         struct sk_buff *msg;
16312         void *hdr;
16313         struct nlattr *nl_freq;
16314
16315         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16316         if (!msg)
16317                 return;
16318
16319         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16320         if (!hdr) {
16321                 nlmsg_free(msg);
16322                 return;
16323         }
16324
16325         /*
16326          * Since we are applying the beacon hint to a wiphy we know its
16327          * wiphy_idx is valid
16328          */
16329         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16330                 goto nla_put_failure;
16331
16332         /* Before */
16333         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16334         if (!nl_freq)
16335                 goto nla_put_failure;
16336
16337         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16338                 goto nla_put_failure;
16339         nla_nest_end(msg, nl_freq);
16340
16341         /* After */
16342         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16343         if (!nl_freq)
16344                 goto nla_put_failure;
16345
16346         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16347                 goto nla_put_failure;
16348         nla_nest_end(msg, nl_freq);
16349
16350         genlmsg_end(msg, hdr);
16351
16352         rcu_read_lock();
16353         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16354                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16355         rcu_read_unlock();
16356
16357         return;
16358
16359 nla_put_failure:
16360         nlmsg_free(msg);
16361 }
16362
16363 static void nl80211_send_remain_on_chan_event(
16364         int cmd, struct cfg80211_registered_device *rdev,
16365         struct wireless_dev *wdev, u64 cookie,
16366         struct ieee80211_channel *chan,
16367         unsigned int duration, gfp_t gfp)
16368 {
16369         struct sk_buff *msg;
16370         void *hdr;
16371
16372         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16373         if (!msg)
16374                 return;
16375
16376         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16377         if (!hdr) {
16378                 nlmsg_free(msg);
16379                 return;
16380         }
16381
16382         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16383             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16384                                          wdev->netdev->ifindex)) ||
16385             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16386                               NL80211_ATTR_PAD) ||
16387             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16388             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16389                         NL80211_CHAN_NO_HT) ||
16390             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16391                               NL80211_ATTR_PAD))
16392                 goto nla_put_failure;
16393
16394         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16395             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16396                 goto nla_put_failure;
16397
16398         genlmsg_end(msg, hdr);
16399
16400         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16401                                 NL80211_MCGRP_MLME, gfp);
16402         return;
16403
16404  nla_put_failure:
16405         nlmsg_free(msg);
16406 }
16407
16408 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16409                                struct ieee80211_channel *chan,
16410                                unsigned int duration, gfp_t gfp)
16411 {
16412         struct wiphy *wiphy = wdev->wiphy;
16413         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16414
16415         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16416         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16417                                           rdev, wdev, cookie, chan,
16418                                           duration, gfp);
16419 }
16420 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16421
16422 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16423                                         struct ieee80211_channel *chan,
16424                                         gfp_t gfp)
16425 {
16426         struct wiphy *wiphy = wdev->wiphy;
16427         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16428
16429         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16430         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16431                                           rdev, wdev, cookie, chan, 0, gfp);
16432 }
16433 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16434
16435 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16436                                         struct ieee80211_channel *chan,
16437                                         gfp_t gfp)
16438 {
16439         struct wiphy *wiphy = wdev->wiphy;
16440         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16441
16442         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16443         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16444                                           rdev, wdev, cookie, chan, 0, gfp);
16445 }
16446 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16447
16448 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16449                       struct station_info *sinfo, gfp_t gfp)
16450 {
16451         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16452         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16453         struct sk_buff *msg;
16454
16455         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16456
16457         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16458         if (!msg)
16459                 return;
16460
16461         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16462                                  rdev, dev, mac_addr, sinfo) < 0) {
16463                 nlmsg_free(msg);
16464                 return;
16465         }
16466
16467         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16468                                 NL80211_MCGRP_MLME, gfp);
16469 }
16470 EXPORT_SYMBOL(cfg80211_new_sta);
16471
16472 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16473                             struct station_info *sinfo, gfp_t gfp)
16474 {
16475         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16476         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16477         struct sk_buff *msg;
16478         struct station_info empty_sinfo = {};
16479
16480         if (!sinfo)
16481                 sinfo = &empty_sinfo;
16482
16483         trace_cfg80211_del_sta(dev, mac_addr);
16484
16485         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16486         if (!msg) {
16487                 cfg80211_sinfo_release_content(sinfo);
16488                 return;
16489         }
16490
16491         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16492                                  rdev, dev, mac_addr, sinfo) < 0) {
16493                 nlmsg_free(msg);
16494                 return;
16495         }
16496
16497         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16498                                 NL80211_MCGRP_MLME, gfp);
16499 }
16500 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16501
16502 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16503                           enum nl80211_connect_failed_reason reason,
16504                           gfp_t gfp)
16505 {
16506         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16507         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16508         struct sk_buff *msg;
16509         void *hdr;
16510
16511         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16512         if (!msg)
16513                 return;
16514
16515         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16516         if (!hdr) {
16517                 nlmsg_free(msg);
16518                 return;
16519         }
16520
16521         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16522             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16523             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16524                 goto nla_put_failure;
16525
16526         genlmsg_end(msg, hdr);
16527
16528         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16529                                 NL80211_MCGRP_MLME, gfp);
16530         return;
16531
16532  nla_put_failure:
16533         nlmsg_free(msg);
16534 }
16535 EXPORT_SYMBOL(cfg80211_conn_failed);
16536
16537 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16538                                        const u8 *addr, gfp_t gfp)
16539 {
16540         struct wireless_dev *wdev = dev->ieee80211_ptr;
16541         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16542         struct sk_buff *msg;
16543         void *hdr;
16544         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16545
16546         if (!nlportid)
16547                 return false;
16548
16549         msg = nlmsg_new(100, gfp);
16550         if (!msg)
16551                 return true;
16552
16553         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16554         if (!hdr) {
16555                 nlmsg_free(msg);
16556                 return true;
16557         }
16558
16559         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16560             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16561             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16562                 goto nla_put_failure;
16563
16564         genlmsg_end(msg, hdr);
16565         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16566         return true;
16567
16568  nla_put_failure:
16569         nlmsg_free(msg);
16570         return true;
16571 }
16572
16573 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16574                                 const u8 *addr, gfp_t gfp)
16575 {
16576         struct wireless_dev *wdev = dev->ieee80211_ptr;
16577         bool ret;
16578
16579         trace_cfg80211_rx_spurious_frame(dev, addr);
16580
16581         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16582                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16583                 trace_cfg80211_return_bool(false);
16584                 return false;
16585         }
16586         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16587                                          addr, gfp);
16588         trace_cfg80211_return_bool(ret);
16589         return ret;
16590 }
16591 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16592
16593 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16594                                         const u8 *addr, gfp_t gfp)
16595 {
16596         struct wireless_dev *wdev = dev->ieee80211_ptr;
16597         bool ret;
16598
16599         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16600
16601         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16602                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16603                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16604                 trace_cfg80211_return_bool(false);
16605                 return false;
16606         }
16607         ret = __nl80211_unexpected_frame(dev,
16608                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16609                                          addr, gfp);
16610         trace_cfg80211_return_bool(ret);
16611         return ret;
16612 }
16613 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16614
16615 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16616                       struct wireless_dev *wdev, u32 nlportid,
16617                       int freq, int sig_dbm,
16618                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16619 {
16620         struct net_device *netdev = wdev->netdev;
16621         struct sk_buff *msg;
16622         void *hdr;
16623
16624         msg = nlmsg_new(100 + len, gfp);
16625         if (!msg)
16626                 return -ENOMEM;
16627
16628         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16629         if (!hdr) {
16630                 nlmsg_free(msg);
16631                 return -ENOMEM;
16632         }
16633
16634         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16635             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16636                                         netdev->ifindex)) ||
16637             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16638                               NL80211_ATTR_PAD) ||
16639             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16640             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16641             (sig_dbm &&
16642              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16643             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16644             (flags &&
16645              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16646                 goto nla_put_failure;
16647
16648         genlmsg_end(msg, hdr);
16649
16650         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16651
16652  nla_put_failure:
16653         nlmsg_free(msg);
16654         return -ENOBUFS;
16655 }
16656
16657 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16658                                     const u8 *buf, size_t len, bool ack,
16659                                     gfp_t gfp, enum nl80211_commands command)
16660 {
16661         struct wiphy *wiphy = wdev->wiphy;
16662         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16663         struct net_device *netdev = wdev->netdev;
16664         struct sk_buff *msg;
16665         void *hdr;
16666
16667         if (command == NL80211_CMD_FRAME_TX_STATUS)
16668                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16669         else
16670                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16671
16672         msg = nlmsg_new(100 + len, gfp);
16673         if (!msg)
16674                 return;
16675
16676         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16677         if (!hdr) {
16678                 nlmsg_free(msg);
16679                 return;
16680         }
16681
16682         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16683             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16684                                    netdev->ifindex)) ||
16685             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16686                               NL80211_ATTR_PAD) ||
16687             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16688             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16689                               NL80211_ATTR_PAD) ||
16690             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16691                 goto nla_put_failure;
16692
16693         genlmsg_end(msg, hdr);
16694
16695         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16696                                 NL80211_MCGRP_MLME, gfp);
16697         return;
16698
16699 nla_put_failure:
16700         nlmsg_free(msg);
16701 }
16702
16703 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16704                                      const u8 *buf, size_t len, bool ack,
16705                                      gfp_t gfp)
16706 {
16707         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16708                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16709 }
16710 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16711
16712 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16713                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16714 {
16715         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16716                                 NL80211_CMD_FRAME_TX_STATUS);
16717 }
16718 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16719
16720 static int __nl80211_rx_control_port(struct net_device *dev,
16721                                      struct sk_buff *skb,
16722                                      bool unencrypted, gfp_t gfp)
16723 {
16724         struct wireless_dev *wdev = dev->ieee80211_ptr;
16725         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16726         struct ethhdr *ehdr = eth_hdr(skb);
16727         const u8 *addr = ehdr->h_source;
16728         u16 proto = be16_to_cpu(skb->protocol);
16729         struct sk_buff *msg;
16730         void *hdr;
16731         struct nlattr *frame;
16732
16733         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16734
16735         if (!nlportid)
16736                 return -ENOENT;
16737
16738         msg = nlmsg_new(100 + skb->len, gfp);
16739         if (!msg)
16740                 return -ENOMEM;
16741
16742         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
16743         if (!hdr) {
16744                 nlmsg_free(msg);
16745                 return -ENOBUFS;
16746         }
16747
16748         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16749             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16750             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16751                               NL80211_ATTR_PAD) ||
16752             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16753             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
16754             (unencrypted && nla_put_flag(msg,
16755                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
16756                 goto nla_put_failure;
16757
16758         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
16759         if (!frame)
16760                 goto nla_put_failure;
16761
16762         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
16763         genlmsg_end(msg, hdr);
16764
16765         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16766
16767  nla_put_failure:
16768         nlmsg_free(msg);
16769         return -ENOBUFS;
16770 }
16771
16772 bool cfg80211_rx_control_port(struct net_device *dev,
16773                               struct sk_buff *skb, bool unencrypted)
16774 {
16775         int ret;
16776
16777         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
16778         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
16779         trace_cfg80211_return_bool(ret == 0);
16780         return ret == 0;
16781 }
16782 EXPORT_SYMBOL(cfg80211_rx_control_port);
16783
16784 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
16785                                             const char *mac, gfp_t gfp)
16786 {
16787         struct wireless_dev *wdev = dev->ieee80211_ptr;
16788         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16789         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16790         void **cb;
16791
16792         if (!msg)
16793                 return NULL;
16794
16795         cb = (void **)msg->cb;
16796
16797         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
16798         if (!cb[0]) {
16799                 nlmsg_free(msg);
16800                 return NULL;
16801         }
16802
16803         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16804             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16805                 goto nla_put_failure;
16806
16807         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16808                 goto nla_put_failure;
16809
16810         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16811         if (!cb[1])
16812                 goto nla_put_failure;
16813
16814         cb[2] = rdev;
16815
16816         return msg;
16817  nla_put_failure:
16818         nlmsg_free(msg);
16819         return NULL;
16820 }
16821
16822 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16823 {
16824         void **cb = (void **)msg->cb;
16825         struct cfg80211_registered_device *rdev = cb[2];
16826
16827         nla_nest_end(msg, cb[1]);
16828         genlmsg_end(msg, cb[0]);
16829
16830         memset(msg->cb, 0, sizeof(msg->cb));
16831
16832         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16833                                 NL80211_MCGRP_MLME, gfp);
16834 }
16835
16836 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16837                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16838                               s32 rssi_level, gfp_t gfp)
16839 {
16840         struct sk_buff *msg;
16841         struct wireless_dev *wdev = dev->ieee80211_ptr;
16842         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16843
16844         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16845
16846         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16847                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16848                 return;
16849
16850         if (wdev->cqm_config) {
16851                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16852
16853                 cfg80211_cqm_rssi_update(rdev, dev);
16854
16855                 if (rssi_level == 0)
16856                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16857         }
16858
16859         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16860         if (!msg)
16861                 return;
16862
16863         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16864                         rssi_event))
16865                 goto nla_put_failure;
16866
16867         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16868                                       rssi_level))
16869                 goto nla_put_failure;
16870
16871         cfg80211_send_cqm(msg, gfp);
16872
16873         return;
16874
16875  nla_put_failure:
16876         nlmsg_free(msg);
16877 }
16878 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16879
16880 void cfg80211_cqm_txe_notify(struct net_device *dev,
16881                              const u8 *peer, u32 num_packets,
16882                              u32 rate, u32 intvl, gfp_t gfp)
16883 {
16884         struct sk_buff *msg;
16885
16886         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16887         if (!msg)
16888                 return;
16889
16890         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16891                 goto nla_put_failure;
16892
16893         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16894                 goto nla_put_failure;
16895
16896         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16897                 goto nla_put_failure;
16898
16899         cfg80211_send_cqm(msg, gfp);
16900         return;
16901
16902  nla_put_failure:
16903         nlmsg_free(msg);
16904 }
16905 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16906
16907 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16908                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16909 {
16910         struct sk_buff *msg;
16911
16912         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16913
16914         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16915         if (!msg)
16916                 return;
16917
16918         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16919                 goto nla_put_failure;
16920
16921         cfg80211_send_cqm(msg, gfp);
16922         return;
16923
16924  nla_put_failure:
16925         nlmsg_free(msg);
16926 }
16927 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16928
16929 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16930 {
16931         struct sk_buff *msg;
16932
16933         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16934         if (!msg)
16935                 return;
16936
16937         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16938                 goto nla_put_failure;
16939
16940         cfg80211_send_cqm(msg, gfp);
16941         return;
16942
16943  nla_put_failure:
16944         nlmsg_free(msg);
16945 }
16946 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16947
16948 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16949                                      struct net_device *netdev, const u8 *bssid,
16950                                      const u8 *replay_ctr, gfp_t gfp)
16951 {
16952         struct sk_buff *msg;
16953         struct nlattr *rekey_attr;
16954         void *hdr;
16955
16956         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16957         if (!msg)
16958                 return;
16959
16960         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16961         if (!hdr) {
16962                 nlmsg_free(msg);
16963                 return;
16964         }
16965
16966         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16967             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16968             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16969                 goto nla_put_failure;
16970
16971         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16972         if (!rekey_attr)
16973                 goto nla_put_failure;
16974
16975         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16976                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16977                 goto nla_put_failure;
16978
16979         nla_nest_end(msg, rekey_attr);
16980
16981         genlmsg_end(msg, hdr);
16982
16983         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16984                                 NL80211_MCGRP_MLME, gfp);
16985         return;
16986
16987  nla_put_failure:
16988         nlmsg_free(msg);
16989 }
16990
16991 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16992                                const u8 *replay_ctr, gfp_t gfp)
16993 {
16994         struct wireless_dev *wdev = dev->ieee80211_ptr;
16995         struct wiphy *wiphy = wdev->wiphy;
16996         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16997
16998         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16999         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17000 }
17001 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17002
17003 static void
17004 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17005                                struct net_device *netdev, int index,
17006                                const u8 *bssid, bool preauth, gfp_t gfp)
17007 {
17008         struct sk_buff *msg;
17009         struct nlattr *attr;
17010         void *hdr;
17011
17012         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17013         if (!msg)
17014                 return;
17015
17016         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17017         if (!hdr) {
17018                 nlmsg_free(msg);
17019                 return;
17020         }
17021
17022         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17023             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17024                 goto nla_put_failure;
17025
17026         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17027         if (!attr)
17028                 goto nla_put_failure;
17029
17030         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17031             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17032             (preauth &&
17033              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17034                 goto nla_put_failure;
17035
17036         nla_nest_end(msg, attr);
17037
17038         genlmsg_end(msg, hdr);
17039
17040         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17041                                 NL80211_MCGRP_MLME, gfp);
17042         return;
17043
17044  nla_put_failure:
17045         nlmsg_free(msg);
17046 }
17047
17048 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17049                                      const u8 *bssid, bool preauth, gfp_t gfp)
17050 {
17051         struct wireless_dev *wdev = dev->ieee80211_ptr;
17052         struct wiphy *wiphy = wdev->wiphy;
17053         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17054
17055         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17056         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17057 }
17058 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17059
17060 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17061                                      struct net_device *netdev,
17062                                      struct cfg80211_chan_def *chandef,
17063                                      gfp_t gfp,
17064                                      enum nl80211_commands notif,
17065                                      u8 count)
17066 {
17067         struct sk_buff *msg;
17068         void *hdr;
17069
17070         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17071         if (!msg)
17072                 return;
17073
17074         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17075         if (!hdr) {
17076                 nlmsg_free(msg);
17077                 return;
17078         }
17079
17080         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17081                 goto nla_put_failure;
17082
17083         if (nl80211_send_chandef(msg, chandef))
17084                 goto nla_put_failure;
17085
17086         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
17087             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
17088                         goto nla_put_failure;
17089
17090         genlmsg_end(msg, hdr);
17091
17092         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17093                                 NL80211_MCGRP_MLME, gfp);
17094         return;
17095
17096  nla_put_failure:
17097         nlmsg_free(msg);
17098 }
17099
17100 void cfg80211_ch_switch_notify(struct net_device *dev,
17101                                struct cfg80211_chan_def *chandef)
17102 {
17103         struct wireless_dev *wdev = dev->ieee80211_ptr;
17104         struct wiphy *wiphy = wdev->wiphy;
17105         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17106
17107         ASSERT_WDEV_LOCK(wdev);
17108
17109         trace_cfg80211_ch_switch_notify(dev, chandef);
17110
17111         wdev->chandef = *chandef;
17112         wdev->preset_chandef = *chandef;
17113
17114         if (wdev->iftype == NL80211_IFTYPE_STATION &&
17115             !WARN_ON(!wdev->current_bss))
17116                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17117
17118         cfg80211_sched_dfs_chan_update(rdev);
17119
17120         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17121                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
17122 }
17123 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17124
17125 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17126                                        struct cfg80211_chan_def *chandef,
17127                                        u8 count)
17128 {
17129         struct wireless_dev *wdev = dev->ieee80211_ptr;
17130         struct wiphy *wiphy = wdev->wiphy;
17131         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17132
17133         trace_cfg80211_ch_switch_started_notify(dev, chandef);
17134
17135         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17136                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
17137 }
17138 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17139
17140 void
17141 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17142                      const struct cfg80211_chan_def *chandef,
17143                      enum nl80211_radar_event event,
17144                      struct net_device *netdev, gfp_t gfp)
17145 {
17146         struct sk_buff *msg;
17147         void *hdr;
17148
17149         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17150         if (!msg)
17151                 return;
17152
17153         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17154         if (!hdr) {
17155                 nlmsg_free(msg);
17156                 return;
17157         }
17158
17159         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17160                 goto nla_put_failure;
17161
17162         /* NOP and radar events don't need a netdev parameter */
17163         if (netdev) {
17164                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17165
17166                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17167                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17168                                       NL80211_ATTR_PAD))
17169                         goto nla_put_failure;
17170         }
17171
17172         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17173                 goto nla_put_failure;
17174
17175         if (nl80211_send_chandef(msg, chandef))
17176                 goto nla_put_failure;
17177
17178         genlmsg_end(msg, hdr);
17179
17180         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17181                                 NL80211_MCGRP_MLME, gfp);
17182         return;
17183
17184  nla_put_failure:
17185         nlmsg_free(msg);
17186 }
17187
17188 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17189                                        struct sta_opmode_info *sta_opmode,
17190                                        gfp_t gfp)
17191 {
17192         struct sk_buff *msg;
17193         struct wireless_dev *wdev = dev->ieee80211_ptr;
17194         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17195         void *hdr;
17196
17197         if (WARN_ON(!mac))
17198                 return;
17199
17200         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17201         if (!msg)
17202                 return;
17203
17204         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17205         if (!hdr) {
17206                 nlmsg_free(msg);
17207                 return;
17208         }
17209
17210         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17211                 goto nla_put_failure;
17212
17213         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17214                 goto nla_put_failure;
17215
17216         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17217                 goto nla_put_failure;
17218
17219         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17220             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17221                 goto nla_put_failure;
17222
17223         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17224             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17225                 goto nla_put_failure;
17226
17227         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17228             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17229                 goto nla_put_failure;
17230
17231         genlmsg_end(msg, hdr);
17232
17233         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17234                                 NL80211_MCGRP_MLME, gfp);
17235
17236         return;
17237
17238 nla_put_failure:
17239         nlmsg_free(msg);
17240 }
17241 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17242
17243 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17244                            u64 cookie, bool acked, s32 ack_signal,
17245                            bool is_valid_ack_signal, gfp_t gfp)
17246 {
17247         struct wireless_dev *wdev = dev->ieee80211_ptr;
17248         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17249         struct sk_buff *msg;
17250         void *hdr;
17251
17252         trace_cfg80211_probe_status(dev, addr, cookie, acked);
17253
17254         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17255
17256         if (!msg)
17257                 return;
17258
17259         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17260         if (!hdr) {
17261                 nlmsg_free(msg);
17262                 return;
17263         }
17264
17265         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17266             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17267             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17268             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17269                               NL80211_ATTR_PAD) ||
17270             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17271             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17272                                                 ack_signal)))
17273                 goto nla_put_failure;
17274
17275         genlmsg_end(msg, hdr);
17276
17277         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17278                                 NL80211_MCGRP_MLME, gfp);
17279         return;
17280
17281  nla_put_failure:
17282         nlmsg_free(msg);
17283 }
17284 EXPORT_SYMBOL(cfg80211_probe_status);
17285
17286 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17287                                      size_t len, int freq, int sig_dbm)
17288 {
17289         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17290         struct sk_buff *msg;
17291         void *hdr;
17292         struct cfg80211_beacon_registration *reg;
17293
17294         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17295
17296         spin_lock_bh(&rdev->beacon_registrations_lock);
17297         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17298                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17299                 if (!msg) {
17300                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17301                         return;
17302                 }
17303
17304                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17305                 if (!hdr)
17306                         goto nla_put_failure;
17307
17308                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17309                     (freq &&
17310                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17311                                   KHZ_TO_MHZ(freq)) ||
17312                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17313                                   freq % 1000))) ||
17314                     (sig_dbm &&
17315                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17316                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17317                         goto nla_put_failure;
17318
17319                 genlmsg_end(msg, hdr);
17320
17321                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17322         }
17323         spin_unlock_bh(&rdev->beacon_registrations_lock);
17324         return;
17325
17326  nla_put_failure:
17327         spin_unlock_bh(&rdev->beacon_registrations_lock);
17328         nlmsg_free(msg);
17329 }
17330 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17331
17332 #ifdef CONFIG_PM
17333 static int cfg80211_net_detect_results(struct sk_buff *msg,
17334                                        struct cfg80211_wowlan_wakeup *wakeup)
17335 {
17336         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17337         struct nlattr *nl_results, *nl_match, *nl_freqs;
17338         int i, j;
17339
17340         nl_results = nla_nest_start_noflag(msg,
17341                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17342         if (!nl_results)
17343                 return -EMSGSIZE;
17344
17345         for (i = 0; i < nd->n_matches; i++) {
17346                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17347
17348                 nl_match = nla_nest_start_noflag(msg, i);
17349                 if (!nl_match)
17350                         break;
17351
17352                 /* The SSID attribute is optional in nl80211, but for
17353                  * simplicity reasons it's always present in the
17354                  * cfg80211 structure.  If a driver can't pass the
17355                  * SSID, that needs to be changed.  A zero length SSID
17356                  * is still a valid SSID (wildcard), so it cannot be
17357                  * used for this purpose.
17358                  */
17359                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17360                             match->ssid.ssid)) {
17361                         nla_nest_cancel(msg, nl_match);
17362                         goto out;
17363                 }
17364
17365                 if (match->n_channels) {
17366                         nl_freqs = nla_nest_start_noflag(msg,
17367                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17368                         if (!nl_freqs) {
17369                                 nla_nest_cancel(msg, nl_match);
17370                                 goto out;
17371                         }
17372
17373                         for (j = 0; j < match->n_channels; j++) {
17374                                 if (nla_put_u32(msg, j, match->channels[j])) {
17375                                         nla_nest_cancel(msg, nl_freqs);
17376                                         nla_nest_cancel(msg, nl_match);
17377                                         goto out;
17378                                 }
17379                         }
17380
17381                         nla_nest_end(msg, nl_freqs);
17382                 }
17383
17384                 nla_nest_end(msg, nl_match);
17385         }
17386
17387 out:
17388         nla_nest_end(msg, nl_results);
17389         return 0;
17390 }
17391
17392 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17393                                    struct cfg80211_wowlan_wakeup *wakeup,
17394                                    gfp_t gfp)
17395 {
17396         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17397         struct sk_buff *msg;
17398         void *hdr;
17399         int size = 200;
17400
17401         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17402
17403         if (wakeup)
17404                 size += wakeup->packet_present_len;
17405
17406         msg = nlmsg_new(size, gfp);
17407         if (!msg)
17408                 return;
17409
17410         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17411         if (!hdr)
17412                 goto free_msg;
17413
17414         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17415             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17416                               NL80211_ATTR_PAD))
17417                 goto free_msg;
17418
17419         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17420                                         wdev->netdev->ifindex))
17421                 goto free_msg;
17422
17423         if (wakeup) {
17424                 struct nlattr *reasons;
17425
17426                 reasons = nla_nest_start_noflag(msg,
17427                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17428                 if (!reasons)
17429                         goto free_msg;
17430
17431                 if (wakeup->disconnect &&
17432                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17433                         goto free_msg;
17434                 if (wakeup->magic_pkt &&
17435                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17436                         goto free_msg;
17437                 if (wakeup->gtk_rekey_failure &&
17438                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17439                         goto free_msg;
17440                 if (wakeup->eap_identity_req &&
17441                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17442                         goto free_msg;
17443                 if (wakeup->four_way_handshake &&
17444                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17445                         goto free_msg;
17446                 if (wakeup->rfkill_release &&
17447                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17448                         goto free_msg;
17449
17450                 if (wakeup->pattern_idx >= 0 &&
17451                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17452                                 wakeup->pattern_idx))
17453                         goto free_msg;
17454
17455                 if (wakeup->tcp_match &&
17456                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17457                         goto free_msg;
17458
17459                 if (wakeup->tcp_connlost &&
17460                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17461                         goto free_msg;
17462
17463                 if (wakeup->tcp_nomoretokens &&
17464                     nla_put_flag(msg,
17465                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17466                         goto free_msg;
17467
17468                 if (wakeup->packet) {
17469                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17470                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17471
17472                         if (!wakeup->packet_80211) {
17473                                 pkt_attr =
17474                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17475                                 len_attr =
17476                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17477                         }
17478
17479                         if (wakeup->packet_len &&
17480                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17481                                 goto free_msg;
17482
17483                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17484                                     wakeup->packet))
17485                                 goto free_msg;
17486                 }
17487
17488                 if (wakeup->net_detect &&
17489                     cfg80211_net_detect_results(msg, wakeup))
17490                                 goto free_msg;
17491
17492                 nla_nest_end(msg, reasons);
17493         }
17494
17495         genlmsg_end(msg, hdr);
17496
17497         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17498                                 NL80211_MCGRP_MLME, gfp);
17499         return;
17500
17501  free_msg:
17502         nlmsg_free(msg);
17503 }
17504 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17505 #endif
17506
17507 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17508                                 enum nl80211_tdls_operation oper,
17509                                 u16 reason_code, gfp_t gfp)
17510 {
17511         struct wireless_dev *wdev = dev->ieee80211_ptr;
17512         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17513         struct sk_buff *msg;
17514         void *hdr;
17515
17516         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17517                                          reason_code);
17518
17519         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17520         if (!msg)
17521                 return;
17522
17523         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17524         if (!hdr) {
17525                 nlmsg_free(msg);
17526                 return;
17527         }
17528
17529         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17530             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17531             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17532             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17533             (reason_code > 0 &&
17534              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17535                 goto nla_put_failure;
17536
17537         genlmsg_end(msg, hdr);
17538
17539         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17540                                 NL80211_MCGRP_MLME, gfp);
17541         return;
17542
17543  nla_put_failure:
17544         nlmsg_free(msg);
17545 }
17546 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17547
17548 static int nl80211_netlink_notify(struct notifier_block * nb,
17549                                   unsigned long state,
17550                                   void *_notify)
17551 {
17552         struct netlink_notify *notify = _notify;
17553         struct cfg80211_registered_device *rdev;
17554         struct wireless_dev *wdev;
17555         struct cfg80211_beacon_registration *reg, *tmp;
17556
17557         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17558                 return NOTIFY_DONE;
17559
17560         rcu_read_lock();
17561
17562         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17563                 struct cfg80211_sched_scan_request *sched_scan_req;
17564
17565                 list_for_each_entry_rcu(sched_scan_req,
17566                                         &rdev->sched_scan_req_list,
17567                                         list) {
17568                         if (sched_scan_req->owner_nlportid == notify->portid) {
17569                                 sched_scan_req->nl_owner_dead = true;
17570                                 schedule_work(&rdev->sched_scan_stop_wk);
17571                         }
17572                 }
17573
17574                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17575                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17576
17577                         if (wdev->owner_nlportid == notify->portid) {
17578                                 wdev->nl_owner_dead = true;
17579                                 schedule_work(&rdev->destroy_work);
17580                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17581                                 schedule_work(&wdev->disconnect_wk);
17582                         }
17583
17584                         cfg80211_release_pmsr(wdev, notify->portid);
17585                 }
17586
17587                 spin_lock_bh(&rdev->beacon_registrations_lock);
17588                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17589                                          list) {
17590                         if (reg->nlportid == notify->portid) {
17591                                 list_del(&reg->list);
17592                                 kfree(reg);
17593                                 break;
17594                         }
17595                 }
17596                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17597         }
17598
17599         rcu_read_unlock();
17600
17601         /*
17602          * It is possible that the user space process that is controlling the
17603          * indoor setting disappeared, so notify the regulatory core.
17604          */
17605         regulatory_netlink_notify(notify->portid);
17606         return NOTIFY_OK;
17607 }
17608
17609 static struct notifier_block nl80211_netlink_notifier = {
17610         .notifier_call = nl80211_netlink_notify,
17611 };
17612
17613 void cfg80211_ft_event(struct net_device *netdev,
17614                        struct cfg80211_ft_event_params *ft_event)
17615 {
17616         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17617         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17618         struct sk_buff *msg;
17619         void *hdr;
17620
17621         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17622
17623         if (!ft_event->target_ap)
17624                 return;
17625
17626         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17627                         GFP_KERNEL);
17628         if (!msg)
17629                 return;
17630
17631         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17632         if (!hdr)
17633                 goto out;
17634
17635         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17636             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17637             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17638                 goto out;
17639
17640         if (ft_event->ies &&
17641             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17642                 goto out;
17643         if (ft_event->ric_ies &&
17644             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17645                     ft_event->ric_ies))
17646                 goto out;
17647
17648         genlmsg_end(msg, hdr);
17649
17650         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17651                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17652         return;
17653  out:
17654         nlmsg_free(msg);
17655 }
17656 EXPORT_SYMBOL(cfg80211_ft_event);
17657
17658 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17659 {
17660         struct cfg80211_registered_device *rdev;
17661         struct sk_buff *msg;
17662         void *hdr;
17663         u32 nlportid;
17664
17665         rdev = wiphy_to_rdev(wdev->wiphy);
17666         if (!rdev->crit_proto_nlportid)
17667                 return;
17668
17669         nlportid = rdev->crit_proto_nlportid;
17670         rdev->crit_proto_nlportid = 0;
17671
17672         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17673         if (!msg)
17674                 return;
17675
17676         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17677         if (!hdr)
17678                 goto nla_put_failure;
17679
17680         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17681             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17682                               NL80211_ATTR_PAD))
17683                 goto nla_put_failure;
17684
17685         genlmsg_end(msg, hdr);
17686
17687         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17688         return;
17689
17690  nla_put_failure:
17691         nlmsg_free(msg);
17692 }
17693 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17694
17695 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17696 {
17697         struct wiphy *wiphy = wdev->wiphy;
17698         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17699         struct sk_buff *msg;
17700         void *hdr;
17701
17702         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17703         if (!msg)
17704                 return;
17705
17706         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17707         if (!hdr)
17708                 goto out;
17709
17710         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17711             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17712             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17713                               NL80211_ATTR_PAD))
17714                 goto out;
17715
17716         genlmsg_end(msg, hdr);
17717
17718         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17719                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17720         return;
17721  out:
17722         nlmsg_free(msg);
17723 }
17724
17725 int cfg80211_external_auth_request(struct net_device *dev,
17726                                    struct cfg80211_external_auth_params *params,
17727                                    gfp_t gfp)
17728 {
17729         struct wireless_dev *wdev = dev->ieee80211_ptr;
17730         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17731         struct sk_buff *msg;
17732         void *hdr;
17733
17734         if (!wdev->conn_owner_nlportid)
17735                 return -EINVAL;
17736
17737         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17738         if (!msg)
17739                 return -ENOMEM;
17740
17741         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
17742         if (!hdr)
17743                 goto nla_put_failure;
17744
17745         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17746             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17747             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
17748             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
17749                         params->action) ||
17750             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
17751             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
17752                     params->ssid.ssid))
17753                 goto nla_put_failure;
17754
17755         genlmsg_end(msg, hdr);
17756         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
17757                         wdev->conn_owner_nlportid);
17758         return 0;
17759
17760  nla_put_failure:
17761         nlmsg_free(msg);
17762         return -ENOBUFS;
17763 }
17764 EXPORT_SYMBOL(cfg80211_external_auth_request);
17765
17766 void cfg80211_update_owe_info_event(struct net_device *netdev,
17767                                     struct cfg80211_update_owe_info *owe_info,
17768                                     gfp_t gfp)
17769 {
17770         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17771         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17772         struct sk_buff *msg;
17773         void *hdr;
17774
17775         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
17776
17777         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17778         if (!msg)
17779                 return;
17780
17781         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
17782         if (!hdr)
17783                 goto nla_put_failure;
17784
17785         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17786             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17787             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
17788                 goto nla_put_failure;
17789
17790         if (!owe_info->ie_len ||
17791             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
17792                 goto nla_put_failure;
17793
17794         genlmsg_end(msg, hdr);
17795
17796         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17797                                 NL80211_MCGRP_MLME, gfp);
17798         return;
17799
17800 nla_put_failure:
17801         genlmsg_cancel(msg, hdr);
17802         nlmsg_free(msg);
17803 }
17804 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
17805
17806 /* initialisation/exit functions */
17807
17808 int __init nl80211_init(void)
17809 {
17810         int err;
17811
17812         err = genl_register_family(&nl80211_fam);
17813         if (err)
17814                 return err;
17815
17816         err = netlink_register_notifier(&nl80211_netlink_notifier);
17817         if (err)
17818                 goto err_out;
17819
17820         return 0;
17821  err_out:
17822         genl_unregister_family(&nl80211_fam);
17823         return err;
17824 }
17825
17826 void nl80211_exit(void)
17827 {
17828         netlink_unregister_notifier(&nl80211_netlink_notifier);
17829         genl_unregister_family(&nl80211_fam);
17830 }