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 cfg80211_registered_device *rdev,
  68                            struct net *netns, struct nlattr **attrs)
  69 {
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         if (!have_ifidx && !have_wdev_id)
  78                 return ERR_PTR(-EINVAL);
  79
  80         if (have_ifidx)
  81                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  82         if (have_wdev_id) {
  83                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  84                 wiphy_idx = wdev_id >> 32;
  85         }
  86
  87         if (rdev) {
  88                 struct wireless_dev *wdev;
  89
  90                 lockdep_assert_held(&rdev->wiphy.mtx);
  91
  92                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  93                         if (have_ifidx && wdev->netdev &&
  94                             wdev->netdev->ifindex == ifidx) {
  95                                 result = wdev;
  96                                 break;
  97                         }
  98                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
  99                                 result = wdev;
 100                                 break;
 101                         }
 102                 }
 103
 104                 return result ?: ERR_PTR(-ENODEV);
 105         }
 106
 107         ASSERT_RTNL();
 108
 109         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
 110                 struct wireless_dev *wdev;
 111
 112                 if (wiphy_net(&rdev->wiphy) != netns)
 113                         continue;
 114
 115                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
 116                         continue;
 117
 118                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
 119                         if (have_ifidx && wdev->netdev &&
 120                             wdev->netdev->ifindex == ifidx) {
 121                                 result = wdev;
 122                                 break;
 123                         }
 124                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 125                                 result = wdev;
 126                                 break;
 127                         }
 128                 }
 129
 130                 if (result)
 131                         break;
 132         }
 133
 134         if (result)
 135                 return result;
 136         return ERR_PTR(-ENODEV);
 137 }
 138
 139 static struct cfg80211_registered_device *
 140 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 141 {
 142         struct cfg80211_registered_device *rdev = NULL, *tmp;
 143         struct net_device *netdev;
 144
 145         ASSERT_RTNL();
 146
 147         if (!attrs[NL80211_ATTR_WIPHY] &&
 148             !attrs[NL80211_ATTR_IFINDEX] &&
 149             !attrs[NL80211_ATTR_WDEV])
 150                 return ERR_PTR(-EINVAL);
 151
 152         if (attrs[NL80211_ATTR_WIPHY])
 153                 rdev = cfg80211_rdev_by_wiphy_idx(
 154                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 155
 156         if (attrs[NL80211_ATTR_WDEV]) {
 157                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 158                 struct wireless_dev *wdev;
 159                 bool found = false;
 160
 161                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 162                 if (tmp) {
 163                         /* make sure wdev exists */
 164                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 165                                 if (wdev->identifier != (u32)wdev_id)
 166                                         continue;
 167                                 found = true;
 168                                 break;
 169                         }
 170
 171                         if (!found)
 172                                 tmp = NULL;
 173
 174                         if (rdev && tmp != rdev)
 175                                 return ERR_PTR(-EINVAL);
 176                         rdev = tmp;
 177                 }
 178         }
 179
 180         if (attrs[NL80211_ATTR_IFINDEX]) {
 181                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 182
 183                 netdev = __dev_get_by_index(netns, ifindex);
 184                 if (netdev) {
 185                         if (netdev->ieee80211_ptr)
 186                                 tmp = wiphy_to_rdev(
 187                                         netdev->ieee80211_ptr->wiphy);
 188                         else
 189                                 tmp = NULL;
 190
 191                         /* not wireless device -- return error */
 192                         if (!tmp)
 193                                 return ERR_PTR(-EINVAL);
 194
 195                         /* mismatch -- return error */
 196                         if (rdev && tmp != rdev)
 197                                 return ERR_PTR(-EINVAL);
 198
 199                         rdev = tmp;
 200                 }
 201         }
 202
 203         if (!rdev)
 204                 return ERR_PTR(-ENODEV);
 205
 206         if (netns != wiphy_net(&rdev->wiphy))
 207                 return ERR_PTR(-ENODEV);
 208
 209         return rdev;
 210 }
 211
 212 /*
 213  * This function returns a pointer to the driver
 214  * that the genl_info item that is passed refers to.
 215  *
 216  * The result of this can be a PTR_ERR and hence must
 217  * be checked with IS_ERR() for errors.
 218  */
 219 static struct cfg80211_registered_device *
 220 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 221 {
 222         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 223 }
 224
 225 static int validate_beacon_head(const struct nlattr *attr,
 226                                 struct netlink_ext_ack *extack)
 227 {
 228         const u8 *data = nla_data(attr);
 229         unsigned int len = nla_len(attr);
 230         const struct element *elem;
 231         const struct ieee80211_mgmt *mgmt = (void *)data;
 232         bool s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control);
 233         unsigned int fixedlen, hdrlen;
 234
 235         if (s1g_bcn) {
 236                 fixedlen = offsetof(struct ieee80211_ext,
 237                                     u.s1g_beacon.variable);
 238                 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon);
 239         } else {
 240                 fixedlen = offsetof(struct ieee80211_mgmt,
 241                                     u.beacon.variable);
 242                 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon);
 243         }
 244
 245         if (len < fixedlen)
 246                 goto err;
 247
 248         if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen)
 249                 goto err;
 250
 251         data += fixedlen;
 252         len -= fixedlen;
 253
 254         for_each_element(elem, data, len) {
 255                 /* nothing */
 256         }
 257
 258         if (for_each_element_completed(elem, data, len))
 259                 return 0;
 260
 261 err:
 262         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 263         return -EINVAL;
 264 }
 265
 266 static int validate_ie_attr(const struct nlattr *attr,
 267                             struct netlink_ext_ack *extack)
 268 {
 269         const u8 *data = nla_data(attr);
 270         unsigned int len = nla_len(attr);
 271         const struct element *elem;
 272
 273         for_each_element(elem, data, len) {
 274                 /* nothing */
 275         }
 276
 277         if (for_each_element_completed(elem, data, len))
 278                 return 0;
 279
 280         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 281         return -EINVAL;
 282 }
 283
 284 /* policy for the attributes */
 285 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR];
 286
 287 static const struct nla_policy
 288 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 289         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 290         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 291                                         .len = U8_MAX },
 292         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 293                                              .len = U8_MAX },
 294 };
 295
 296 static const struct nla_policy
 297 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 298         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 299         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 300         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 301                 NLA_POLICY_MAX(NLA_U8, 15),
 302         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 303         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 304                 NLA_POLICY_MAX(NLA_U8, 15),
 305         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 306                 NLA_POLICY_MAX(NLA_U8, 31),
 307         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 308         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 309         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 310         [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG },
 311         [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG },
 312 };
 313
 314 static const struct nla_policy
 315 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 316         [NL80211_PMSR_TYPE_FTM] =
 317                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 318 };
 319
 320 static const struct nla_policy
 321 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 322         [NL80211_PMSR_REQ_ATTR_DATA] =
 323                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 324         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 325 };
 326
 327 static const struct nla_policy
 328 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 329         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 330         [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy),
 331         [NL80211_PMSR_PEER_ATTR_REQ] =
 332                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 333         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 334 };
 335
 336 static const struct nla_policy
 337 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 338         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 339         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 340         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 341         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 342         [NL80211_PMSR_ATTR_PEERS] =
 343                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 344 };
 345
 346 static const struct nla_policy
 347 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 348         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 349                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 350         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 351                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 352         [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] =
 353                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 354         [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] =
 355                 NLA_POLICY_EXACT_LEN(8),
 356         [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] =
 357                 NLA_POLICY_EXACT_LEN(8),
 358         [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 },
 359 };
 360
 361 static const struct nla_policy
 362 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = {
 363         [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63),
 364         [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG },
 365         [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG },
 366 };
 367
 368 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
 369         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
 370                                     .len = NL80211_MAX_SUPP_RATES },
 371         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
 372                                 .len = NL80211_MAX_SUPP_HT_RATES },
 373         [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)),
 374         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
 375         [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)),
 376         [NL80211_TXRATE_HE_GI] =  NLA_POLICY_RANGE(NLA_U8,
 377                                                    NL80211_RATE_INFO_HE_GI_0_8,
 378                                                    NL80211_RATE_INFO_HE_GI_3_2),
 379         [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8,
 380                                                    NL80211_RATE_INFO_HE_1XLTF,
 381                                                    NL80211_RATE_INFO_HE_4XLTF),
 382 };
 383
 384 static const struct nla_policy
 385 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 386         [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 },
 387         [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 },
 388         [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG },
 389         [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff),
 390         [NL80211_TID_CONFIG_ATTR_NOACK] =
 391                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 392         [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 393         [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 394         [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 395                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 396         [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
 397                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 398         [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] =
 399                         NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 400         [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] =
 401                         NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
 402         [NL80211_TID_CONFIG_ATTR_TX_RATE] =
 403                         NLA_POLICY_NESTED(nl80211_txattr_policy),
 404 };
 405
 406 static const struct nla_policy
 407 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = {
 408         [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000),
 409         [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000),
 410         NLA_POLICY_RANGE(NLA_BINARY,
 411                          NL80211_FILS_DISCOVERY_TMPL_MIN_LEN,
 412                          IEEE80211_MAX_DATA_LEN),
 413 };
 414
 415 static const struct nla_policy
 416 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = {
 417         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20),
 418         [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY,
 419                                                        .len = IEEE80211_MAX_DATA_LEN }
 420 };
 421
 422 static const struct nla_policy
 423 sar_specs_policy[NL80211_SAR_ATTR_SPECS_MAX + 1] = {
 424         [NL80211_SAR_ATTR_SPECS_POWER] = { .type = NLA_S32 },
 425         [NL80211_SAR_ATTR_SPECS_RANGE_INDEX] = {.type = NLA_U32 },
 426 };
 427
 428 static const struct nla_policy
 429 sar_policy[NL80211_SAR_ATTR_MAX + 1] = {
 430         [NL80211_SAR_ATTR_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_SAR_TYPE),
 431         [NL80211_SAR_ATTR_SPECS] = NLA_POLICY_NESTED_ARRAY(sar_specs_policy),
 432 };
 433
 434 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 435         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 436         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 437         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 438                                       .len = 20-1 },
 439         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 440
 441         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 442         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 443         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 444                                                 NL80211_EDMG_CHANNELS_MIN,
 445                                                 NL80211_EDMG_CHANNELS_MAX),
 446         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 447                                                 NL80211_EDMG_BW_CONFIG_MIN,
 448                                                 NL80211_EDMG_BW_CONFIG_MAX),
 449
 450         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 451         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 452         [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 453         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 454
 455         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 456         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 457         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 458         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 459         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 460         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 461
 462         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 463         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 464         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 465
 466         [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 467         [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 468
 469         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 470         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 471                                     .len = WLAN_MAX_KEY_LEN },
 472         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7),
 473         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 474         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 475         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 476         [NL80211_ATTR_KEY_TYPE] =
 477                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 478
 479         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 480         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 481         [NL80211_ATTR_BEACON_HEAD] =
 482                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 483                                        IEEE80211_MAX_DATA_LEN),
 484         [NL80211_ATTR_BEACON_TAIL] =
 485                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 486                                        IEEE80211_MAX_DATA_LEN),
 487         [NL80211_ATTR_STA_AID] =
 488                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 489         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 490         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 491         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 492                                                .len = NL80211_MAX_SUPP_RATES },
 493         [NL80211_ATTR_STA_PLINK_ACTION] =
 494                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 495         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 496                 NLA_POLICY_RANGE(NLA_U8,
 497                                  NL80211_TX_POWER_AUTOMATIC,
 498                                  NL80211_TX_POWER_FIXED),
 499         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 500         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 501         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 502         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 503                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 504         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 505
 506         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 507         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 508
 509         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 510         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 511         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 512         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 513                                            .len = NL80211_MAX_SUPP_RATES },
 514         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 515
 516         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 517         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 518
 519         [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN),
 520
 521         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 522         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 523                                                    validate_ie_attr,
 524                                                    IEEE80211_MAX_DATA_LEN),
 525         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 526         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 527
 528         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 529                                 .len = IEEE80211_MAX_SSID_LEN },
 530         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 531         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 532         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 533         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 534         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 535                                                   NL80211_MFP_NO,
 536                                                   NL80211_MFP_OPTIONAL),
 537         [NL80211_ATTR_STA_FLAGS2] = {
 538                 .len = sizeof(struct nl80211_sta_flag_update),
 539         },
 540         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 541         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 542         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 543         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 544         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 545         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 546         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 547         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 548         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 549         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 550         [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN),
 551         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 552         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 553         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 554         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 555                                  .len = IEEE80211_MAX_DATA_LEN },
 556         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 557         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 558                                                    NL80211_PS_DISABLED,
 559                                                    NL80211_PS_ENABLED),
 560         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 561         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 562         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 563         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 564         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 565         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 566         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 567         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 568         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 569         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 570         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 571         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 572         [NL80211_ATTR_STA_PLINK_STATE] =
 573                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 574         [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 },
 575         [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG },
 576         [NL80211_ATTR_MESH_PEER_AID] =
 577                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 578         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 579         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 580         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 581         [NL80211_ATTR_HIDDEN_SSID] =
 582                 NLA_POLICY_RANGE(NLA_U32,
 583                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 584                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 585         [NL80211_ATTR_IE_PROBE_RESP] =
 586                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 587                                        IEEE80211_MAX_DATA_LEN),
 588         [NL80211_ATTR_IE_ASSOC_RESP] =
 589                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 590                                        IEEE80211_MAX_DATA_LEN),
 591         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 592         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 593         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 594         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 595         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 596         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 597         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 598         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 599         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 600         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 601         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 602                                       .len = IEEE80211_MAX_DATA_LEN },
 603         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 604         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 605         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 606                 .len = NL80211_HT_CAPABILITY_LEN
 607         },
 608         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 609         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 610         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 611         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 612         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 613
 614         /* need to include at least Auth Transaction and Status Code */
 615         [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4),
 616
 617         [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN),
 618         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 619         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 620         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 621         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 622                 NLA_POLICY_RANGE(NLA_U32,
 623                                  NL80211_MESH_POWER_UNKNOWN + 1,
 624                                  NL80211_MESH_POWER_MAX),
 625         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 626         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 627         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 628         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 629         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 630         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 631         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 632                 .len = NL80211_VHT_CAPABILITY_LEN,
 633         },
 634         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 635         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 636                                   .len = IEEE80211_MAX_DATA_LEN },
 637         [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 },
 638         [NL80211_ATTR_MAX_CRIT_PROT_DURATION] =
 639                 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION),
 640         [NL80211_ATTR_PEER_AID] =
 641                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 642         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 643         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 644         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 645         [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY },
 646         [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY },
 647         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2),
 648         /*
 649          * The value of the Length field of the Supported Operating
 650          * Classes element is between 2 and 253.
 651          */
 652         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] =
 653                 NLA_POLICY_RANGE(NLA_BINARY, 2, 253),
 654         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 655         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 656         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 657         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 658         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 659         [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY,
 660                                                   IEEE80211_QOS_MAP_LEN_MIN,
 661                                                   IEEE80211_QOS_MAP_LEN_MAX),
 662         [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 663         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 664         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 665         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 666         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 667         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 668         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 669         [NL80211_ATTR_USER_PRIO] =
 670                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 671         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 672         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 673         [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 },
 674         [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 675         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 676         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 677         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 678         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 679         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 680         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 681         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 682                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 683         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 684                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 685         },
 686         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 687         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 688         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 689         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 690         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 691                                     .len = FILS_MAX_KEK_LEN },
 692         [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN),
 693         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 694         [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 695         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 696         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 697                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 698         },
 699         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 700         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 701                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 702         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 703                                           .len = FILS_ERP_MAX_REALM_LEN },
 704         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 705         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 706                                         .len = FILS_ERP_MAX_RRK_LEN },
 707         [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2),
 708         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 709         [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN),
 710         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 711         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 712
 713         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 714         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 715         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 716         [NL80211_ATTR_HE_CAPABILITY] =
 717                 NLA_POLICY_RANGE(NLA_BINARY,
 718                                  NL80211_HE_MIN_CAPABILITY_LEN,
 719                                  NL80211_HE_MAX_CAPABILITY_LEN),
 720         [NL80211_ATTR_FTM_RESPONDER] =
 721                 NLA_POLICY_NESTED(nl80211_ftm_responder_policy),
 722         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 723         [NL80211_ATTR_PEER_MEASUREMENTS] =
 724                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 725         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 726         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 727                                         .len = SAE_PASSWORD_MAX_LEN },
 728         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 729         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 730         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 731         [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy),
 732         [NL80211_ATTR_TID_CONFIG] =
 733                 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy),
 734         [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG },
 735         [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1),
 736         [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100),
 737         [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG },
 738         [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999),
 739         [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED },
 740         [NL80211_ATTR_HE_6GHZ_CAPABILITY] =
 741                 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)),
 742         [NL80211_ATTR_FILS_DISCOVERY] =
 743                 NLA_POLICY_NESTED(nl80211_fils_discovery_policy),
 744         [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] =
 745                 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy),
 746         [NL80211_ATTR_S1G_CAPABILITY] =
 747                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 748         [NL80211_ATTR_S1G_CAPABILITY_MASK] =
 749                 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN),
 750         [NL80211_ATTR_SAE_PWE] =
 751                 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK,
 752                                  NL80211_SAE_PWE_BOTH),
 753         [NL80211_ATTR_RECONNECT_REQUESTED] = { .type = NLA_REJECT },
 754         [NL80211_ATTR_SAR_SPEC] = NLA_POLICY_NESTED(sar_policy),
 755         [NL80211_ATTR_DISABLE_HE] = { .type = NLA_FLAG },
 756 };
 757
 758 /* policy for the key attributes */
 759 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 760         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 761         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 762         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 763         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 764         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 765         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 766         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 767         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 768         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 769 };
 770
 771 /* policy for the key default flags */
 772 static const struct nla_policy
 773 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 774         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 775         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 776 };
 777
 778 #ifdef CONFIG_PM
 779 /* policy for WoWLAN attributes */
 780 static const struct nla_policy
 781 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 782         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 783         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 784         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 785         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 786         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 787         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 788         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 789         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 790         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 791         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 792 };
 793
 794 static const struct nla_policy
 795 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 796         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 797         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 798         [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 799         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 800         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 801         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 802         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 803                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 804         },
 805         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 806                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 807         },
 808         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 809         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1),
 810         [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1),
 811 };
 812 #endif /* CONFIG_PM */
 813
 814 /* policy for coalesce rule attributes */
 815 static const struct nla_policy
 816 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 817         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 818         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 819                 NLA_POLICY_RANGE(NLA_U32,
 820                                  NL80211_COALESCE_CONDITION_MATCH,
 821                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 822         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 823 };
 824
 825 /* policy for GTK rekey offload attributes */
 826 static const struct nla_policy
 827 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 828         [NL80211_REKEY_DATA_KEK] = {
 829                 .type = NLA_BINARY,
 830                 .len = NL80211_KEK_EXT_LEN
 831         },
 832         [NL80211_REKEY_DATA_KCK] = {
 833                 .type = NLA_BINARY,
 834                 .len = NL80211_KCK_EXT_LEN
 835         },
 836         [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN),
 837         [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 },
 838 };
 839
 840 static const struct nla_policy
 841 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 842         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 843         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 844         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 845         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 846 };
 847
 848 static const struct nla_policy
 849 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 850         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 851                                                  .len = IEEE80211_MAX_SSID_LEN },
 852         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 853         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 854         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 855                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 856 };
 857
 858 static const struct nla_policy
 859 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 860         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 861         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 862 };
 863
 864 static const struct nla_policy
 865 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 866         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 867         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 868         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 869                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 870         },
 871 };
 872
 873 /* policy for NAN function attributes */
 874 static const struct nla_policy
 875 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 876         [NL80211_NAN_FUNC_TYPE] =
 877                 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE),
 878         [NL80211_NAN_FUNC_SERVICE_ID] = {
 879                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 880         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 881         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 882         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 883         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 884         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 885         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN),
 886         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 887         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 888         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 889                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 890         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 891         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 892         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 893         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 894         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 895 };
 896
 897 /* policy for Service Response Filter attributes */
 898 static const struct nla_policy
 899 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 900         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 901         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 902                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 903         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 904         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 905 };
 906
 907 /* policy for packet pattern attributes */
 908 static const struct nla_policy
 909 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 910         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 911         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 912         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 913 };
 914
 915 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 916                               struct cfg80211_registered_device **rdev,
 917                               struct wireless_dev **wdev)
 918 {
 919         int err;
 920
 921         if (!cb->args[0]) {
 922                 struct nlattr **attrbuf;
 923
 924                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 925                                   GFP_KERNEL);
 926                 if (!attrbuf)
 927                         return -ENOMEM;
 928
 929                 err = nlmsg_parse_deprecated(cb->nlh,
 930                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 931                                              attrbuf, nl80211_fam.maxattr,
 932                                              nl80211_policy, NULL);
 933                 if (err) {
 934                         kfree(attrbuf);
 935                         return err;
 936                 }
 937
 938                 rtnl_lock();
 939                 *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
 940                                                    attrbuf);
 941                 kfree(attrbuf);
 942                 if (IS_ERR(*wdev)) {
 943                         rtnl_unlock();
 944                         return PTR_ERR(*wdev);
 945                 }
 946                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 947                 mutex_lock(&(*rdev)->wiphy.mtx);
 948                 rtnl_unlock();
 949                 /* 0 is the first index - add 1 to parse only once */
 950                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 951                 cb->args[1] = (*wdev)->identifier;
 952         } else {
 953                 /* subtract the 1 again here */
 954                 struct wiphy *wiphy;
 955                 struct wireless_dev *tmp;
 956
 957                 rtnl_lock();
 958                 wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 959                 if (!wiphy) {
 960                         rtnl_unlock();
 961                         return -ENODEV;
 962                 }
 963                 *rdev = wiphy_to_rdev(wiphy);
 964                 *wdev = NULL;
 965
 966                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 967                         if (tmp->identifier == cb->args[1]) {
 968                                 *wdev = tmp;
 969                                 break;
 970                         }
 971                 }
 972
 973                 if (!*wdev) {
 974                         rtnl_unlock();
 975                         return -ENODEV;
 976                 }
 977                 mutex_lock(&(*rdev)->wiphy.mtx);
 978                 rtnl_unlock();
 979         }
 980
 981         return 0;
 982 }
 983
 984 /* message building helper */
 985 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 986                      int flags, u8 cmd)
 987 {
 988         /* since there is no private header just add the generic one */
 989         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 990 }
 991
 992 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 993                                      const struct ieee80211_reg_rule *rule)
 994 {
 995         int j;
 996         struct nlattr *nl_wmm_rules =
 997                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 998
 999         if (!nl_wmm_rules)
1000                 goto nla_put_failure;
1001
1002         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
1003                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
1004
1005                 if (!nl_wmm_rule)
1006                         goto nla_put_failure;
1007
1008                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
1009                                 rule->wmm_rule.client[j].cw_min) ||
1010                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
1011                                 rule->wmm_rule.client[j].cw_max) ||
1012                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
1013                                rule->wmm_rule.client[j].aifsn) ||
1014                     nla_put_u16(msg, NL80211_WMMR_TXOP,
1015                                 rule->wmm_rule.client[j].cot))
1016                         goto nla_put_failure;
1017
1018                 nla_nest_end(msg, nl_wmm_rule);
1019         }
1020         nla_nest_end(msg, nl_wmm_rules);
1021
1022         return 0;
1023
1024 nla_put_failure:
1025         return -ENOBUFS;
1026 }
1027
1028 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
1029                                    struct ieee80211_channel *chan,
1030                                    bool large)
1031 {
1032         /* Some channels must be completely excluded from the
1033          * list to protect old user-space tools from breaking
1034          */
1035         if (!large && chan->flags &
1036             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
1037                 return 0;
1038         if (!large && chan->freq_offset)
1039                 return 0;
1040
1041         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
1042                         chan->center_freq))
1043                 goto nla_put_failure;
1044
1045         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset))
1046                 goto nla_put_failure;
1047
1048         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
1049             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
1050                 goto nla_put_failure;
1051         if (chan->flags & IEEE80211_CHAN_NO_IR) {
1052                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
1053                         goto nla_put_failure;
1054                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
1055                         goto nla_put_failure;
1056         }
1057         if (chan->flags & IEEE80211_CHAN_RADAR) {
1058                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
1059                         goto nla_put_failure;
1060                 if (large) {
1061                         u32 time;
1062
1063                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
1064
1065                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
1066                                         chan->dfs_state))
1067                                 goto nla_put_failure;
1068                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
1069                                         time))
1070                                 goto nla_put_failure;
1071                         if (nla_put_u32(msg,
1072                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
1073                                         chan->dfs_cac_ms))
1074                                 goto nla_put_failure;
1075                 }
1076         }
1077
1078         if (large) {
1079                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
1080                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
1081                         goto nla_put_failure;
1082                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
1083                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
1084                         goto nla_put_failure;
1085                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
1086                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
1087                         goto nla_put_failure;
1088                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
1089                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
1090                         goto nla_put_failure;
1091                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
1092                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
1093                         goto nla_put_failure;
1094                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
1095                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
1096                         goto nla_put_failure;
1097                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
1098                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
1099                         goto nla_put_failure;
1100                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
1101                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
1102                         goto nla_put_failure;
1103                 if ((chan->flags & IEEE80211_CHAN_NO_HE) &&
1104                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE))
1105                         goto nla_put_failure;
1106                 if ((chan->flags & IEEE80211_CHAN_1MHZ) &&
1107                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ))
1108                         goto nla_put_failure;
1109                 if ((chan->flags & IEEE80211_CHAN_2MHZ) &&
1110                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ))
1111                         goto nla_put_failure;
1112                 if ((chan->flags & IEEE80211_CHAN_4MHZ) &&
1113                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ))
1114                         goto nla_put_failure;
1115                 if ((chan->flags & IEEE80211_CHAN_8MHZ) &&
1116                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ))
1117                         goto nla_put_failure;
1118                 if ((chan->flags & IEEE80211_CHAN_16MHZ) &&
1119                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ))
1120                         goto nla_put_failure;
1121         }
1122
1123         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
1124                         DBM_TO_MBM(chan->max_power)))
1125                 goto nla_put_failure;
1126
1127         if (large) {
1128                 const struct ieee80211_reg_rule *rule =
1129                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
1130
1131                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
1132                         if (nl80211_msg_put_wmm_rules(msg, rule))
1133                                 goto nla_put_failure;
1134                 }
1135         }
1136
1137         return 0;
1138
1139  nla_put_failure:
1140         return -ENOBUFS;
1141 }
1142
1143 static bool nl80211_put_txq_stats(struct sk_buff *msg,
1144                                   struct cfg80211_txq_stats *txqstats,
1145                                   int attrtype)
1146 {
1147         struct nlattr *txqattr;
1148
1149 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
1150         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
1151             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1152                 return false;                                             \
1153         } while (0)
1154
1155         txqattr = nla_nest_start_noflag(msg, attrtype);
1156         if (!txqattr)
1157                 return false;
1158
1159         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1160         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1161         PUT_TXQVAL_U32(FLOWS, flows);
1162         PUT_TXQVAL_U32(DROPS, drops);
1163         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1164         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1165         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1166         PUT_TXQVAL_U32(COLLISIONS, collisions);
1167         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1168         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1169         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1170         nla_nest_end(msg, txqattr);
1171
1172 #undef PUT_TXQVAL_U32
1173         return true;
1174 }
1175
1176 /* netlink command implementations */
1177
1178 struct key_parse {
1179         struct key_params p;
1180         int idx;
1181         int type;
1182         bool def, defmgmt, defbeacon;
1183         bool def_uni, def_multi;
1184 };
1185
1186 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1187                                  struct key_parse *k)
1188 {
1189         struct nlattr *tb[NL80211_KEY_MAX + 1];
1190         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1191                                               nl80211_key_policy,
1192                                               info->extack);
1193         if (err)
1194                 return err;
1195
1196         k->def = !!tb[NL80211_KEY_DEFAULT];
1197         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1198         k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON];
1199
1200         if (k->def) {
1201                 k->def_uni = true;
1202                 k->def_multi = true;
1203         }
1204         if (k->defmgmt || k->defbeacon)
1205                 k->def_multi = true;
1206
1207         if (tb[NL80211_KEY_IDX])
1208                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1209
1210         if (tb[NL80211_KEY_DATA]) {
1211                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1212                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1213         }
1214
1215         if (tb[NL80211_KEY_SEQ]) {
1216                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1217                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1218         }
1219
1220         if (tb[NL80211_KEY_CIPHER])
1221                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1222
1223         if (tb[NL80211_KEY_TYPE])
1224                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1225
1226         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1227                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1228
1229                 err = nla_parse_nested_deprecated(kdt,
1230                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1231                                                   tb[NL80211_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         if (tb[NL80211_KEY_MODE])
1242                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1243
1244         return 0;
1245 }
1246
1247 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1248 {
1249         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1250                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1251                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1252         }
1253
1254         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1255                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1256                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1257         }
1258
1259         if (info->attrs[NL80211_ATTR_KEY_IDX])
1260                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1261
1262         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1263                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1264
1265         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1266         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1267
1268         if (k->def) {
1269                 k->def_uni = true;
1270                 k->def_multi = true;
1271         }
1272         if (k->defmgmt)
1273                 k->def_multi = true;
1274
1275         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1276                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1277
1278         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1279                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1280                 int err = nla_parse_nested_deprecated(kdt,
1281                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1282                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1283                                                       nl80211_key_default_policy,
1284                                                       info->extack);
1285                 if (err)
1286                         return err;
1287
1288                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1289                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1290         }
1291
1292         return 0;
1293 }
1294
1295 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1296 {
1297         int err;
1298
1299         memset(k, 0, sizeof(*k));
1300         k->idx = -1;
1301         k->type = -1;
1302
1303         if (info->attrs[NL80211_ATTR_KEY])
1304                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1305         else
1306                 err = nl80211_parse_key_old(info, k);
1307
1308         if (err)
1309                 return err;
1310
1311         if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) +
1312             (k->defbeacon ? 1 : 0) > 1) {
1313                 GENL_SET_ERR_MSG(info,
1314                                  "key with multiple default flags is invalid");
1315                 return -EINVAL;
1316         }
1317
1318         if (k->defmgmt || k->defbeacon) {
1319                 if (k->def_uni || !k->def_multi) {
1320                         GENL_SET_ERR_MSG(info,
1321                                          "defmgmt/defbeacon key must be mcast");
1322                         return -EINVAL;
1323                 }
1324         }
1325
1326         if (k->idx != -1) {
1327                 if (k->defmgmt) {
1328                         if (k->idx < 4 || k->idx > 5) {
1329                                 GENL_SET_ERR_MSG(info,
1330                                                  "defmgmt key idx not 4 or 5");
1331                                 return -EINVAL;
1332                         }
1333                 } else if (k->defbeacon) {
1334                         if (k->idx < 6 || k->idx > 7) {
1335                                 GENL_SET_ERR_MSG(info,
1336                                                  "defbeacon key idx not 6 or 7");
1337                                 return -EINVAL;
1338                         }
1339                 } else if (k->def) {
1340                         if (k->idx < 0 || k->idx > 3) {
1341                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1342                                 return -EINVAL;
1343                         }
1344                 } else {
1345                         if (k->idx < 0 || k->idx > 7) {
1346                                 GENL_SET_ERR_MSG(info, "key idx not 0-7");
1347                                 return -EINVAL;
1348                         }
1349                 }
1350         }
1351
1352         return 0;
1353 }
1354
1355 static struct cfg80211_cached_keys *
1356 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1357                        struct genl_info *info, bool *no_ht)
1358 {
1359         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1360         struct key_parse parse;
1361         struct nlattr *key;
1362         struct cfg80211_cached_keys *result;
1363         int rem, err, def = 0;
1364         bool have_key = false;
1365
1366         nla_for_each_nested(key, keys, rem) {
1367                 have_key = true;
1368                 break;
1369         }
1370
1371         if (!have_key)
1372                 return NULL;
1373
1374         result = kzalloc(sizeof(*result), GFP_KERNEL);
1375         if (!result)
1376                 return ERR_PTR(-ENOMEM);
1377
1378         result->def = -1;
1379
1380         nla_for_each_nested(key, keys, rem) {
1381                 memset(&parse, 0, sizeof(parse));
1382                 parse.idx = -1;
1383
1384                 err = nl80211_parse_key_new(info, key, &parse);
1385                 if (err)
1386                         goto error;
1387                 err = -EINVAL;
1388                 if (!parse.p.key)
1389                         goto error;
1390                 if (parse.idx < 0 || parse.idx > 3) {
1391                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1392                         goto error;
1393                 }
1394                 if (parse.def) {
1395                         if (def) {
1396                                 GENL_SET_ERR_MSG(info,
1397                                                  "only one key can be default");
1398                                 goto error;
1399                         }
1400                         def = 1;
1401                         result->def = parse.idx;
1402                         if (!parse.def_uni || !parse.def_multi)
1403                                 goto error;
1404                 } else if (parse.defmgmt)
1405                         goto error;
1406                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1407                                                      parse.idx, false, NULL);
1408                 if (err)
1409                         goto error;
1410                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1411                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1412                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1413                         err = -EINVAL;
1414                         goto error;
1415                 }
1416                 result->params[parse.idx].cipher = parse.p.cipher;
1417                 result->params[parse.idx].key_len = parse.p.key_len;
1418                 result->params[parse.idx].key = result->data[parse.idx];
1419                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1420
1421                 /* must be WEP key if we got here */
1422                 if (no_ht)
1423                         *no_ht = true;
1424         }
1425
1426         if (result->def < 0) {
1427                 err = -EINVAL;
1428                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1429                 goto error;
1430         }
1431
1432         return result;
1433  error:
1434         kfree(result);
1435         return ERR_PTR(err);
1436 }
1437
1438 static int nl80211_key_allowed(struct wireless_dev *wdev)
1439 {
1440         ASSERT_WDEV_LOCK(wdev);
1441
1442         switch (wdev->iftype) {
1443         case NL80211_IFTYPE_AP:
1444         case NL80211_IFTYPE_AP_VLAN:
1445         case NL80211_IFTYPE_P2P_GO:
1446         case NL80211_IFTYPE_MESH_POINT:
1447                 break;
1448         case NL80211_IFTYPE_ADHOC:
1449         case NL80211_IFTYPE_STATION:
1450         case NL80211_IFTYPE_P2P_CLIENT:
1451                 if (!wdev->current_bss)
1452                         return -ENOLINK;
1453                 break;
1454         case NL80211_IFTYPE_UNSPECIFIED:
1455         case NL80211_IFTYPE_OCB:
1456         case NL80211_IFTYPE_MONITOR:
1457         case NL80211_IFTYPE_NAN:
1458         case NL80211_IFTYPE_P2P_DEVICE:
1459         case NL80211_IFTYPE_WDS:
1460         case NUM_NL80211_IFTYPES:
1461                 return -EINVAL;
1462         }
1463
1464         return 0;
1465 }
1466
1467 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1468                                                         u32 freq)
1469 {
1470         struct ieee80211_channel *chan;
1471
1472         chan = ieee80211_get_channel_khz(wiphy, freq);
1473         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1474                 return NULL;
1475         return chan;
1476 }
1477
1478 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1479 {
1480         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1481         int i;
1482
1483         if (!nl_modes)
1484                 goto nla_put_failure;
1485
1486         i = 0;
1487         while (ifmodes) {
1488                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1489                         goto nla_put_failure;
1490                 ifmodes >>= 1;
1491                 i++;
1492         }
1493
1494         nla_nest_end(msg, nl_modes);
1495         return 0;
1496
1497 nla_put_failure:
1498         return -ENOBUFS;
1499 }
1500
1501 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1502                                           struct sk_buff *msg,
1503                                           bool large)
1504 {
1505         struct nlattr *nl_combis;
1506         int i, j;
1507
1508         nl_combis = nla_nest_start_noflag(msg,
1509                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1510         if (!nl_combis)
1511                 goto nla_put_failure;
1512
1513         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1514                 const struct ieee80211_iface_combination *c;
1515                 struct nlattr *nl_combi, *nl_limits;
1516
1517                 c = &wiphy->iface_combinations[i];
1518
1519                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1520                 if (!nl_combi)
1521                         goto nla_put_failure;
1522
1523                 nl_limits = nla_nest_start_noflag(msg,
1524                                                   NL80211_IFACE_COMB_LIMITS);
1525                 if (!nl_limits)
1526                         goto nla_put_failure;
1527
1528                 for (j = 0; j < c->n_limits; j++) {
1529                         struct nlattr *nl_limit;
1530
1531                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1532                         if (!nl_limit)
1533                                 goto nla_put_failure;
1534                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1535                                         c->limits[j].max))
1536                                 goto nla_put_failure;
1537                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1538                                                 c->limits[j].types))
1539                                 goto nla_put_failure;
1540                         nla_nest_end(msg, nl_limit);
1541                 }
1542
1543                 nla_nest_end(msg, nl_limits);
1544
1545                 if (c->beacon_int_infra_match &&
1546                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1547                         goto nla_put_failure;
1548                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1549                                 c->num_different_channels) ||
1550                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1551                                 c->max_interfaces))
1552                         goto nla_put_failure;
1553                 if (large &&
1554                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1555                                 c->radar_detect_widths) ||
1556                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1557                                 c->radar_detect_regions)))
1558                         goto nla_put_failure;
1559                 if (c->beacon_int_min_gcd &&
1560                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1561                                 c->beacon_int_min_gcd))
1562                         goto nla_put_failure;
1563
1564                 nla_nest_end(msg, nl_combi);
1565         }
1566
1567         nla_nest_end(msg, nl_combis);
1568
1569         return 0;
1570 nla_put_failure:
1571         return -ENOBUFS;
1572 }
1573
1574 #ifdef CONFIG_PM
1575 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1576                                         struct sk_buff *msg)
1577 {
1578         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1579         struct nlattr *nl_tcp;
1580
1581         if (!tcp)
1582                 return 0;
1583
1584         nl_tcp = nla_nest_start_noflag(msg,
1585                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1586         if (!nl_tcp)
1587                 return -ENOBUFS;
1588
1589         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1590                         tcp->data_payload_max))
1591                 return -ENOBUFS;
1592
1593         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1594                         tcp->data_payload_max))
1595                 return -ENOBUFS;
1596
1597         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1598                 return -ENOBUFS;
1599
1600         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1601                                 sizeof(*tcp->tok), tcp->tok))
1602                 return -ENOBUFS;
1603
1604         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1605                         tcp->data_interval_max))
1606                 return -ENOBUFS;
1607
1608         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1609                         tcp->wake_payload_max))
1610                 return -ENOBUFS;
1611
1612         nla_nest_end(msg, nl_tcp);
1613         return 0;
1614 }
1615
1616 static int nl80211_send_wowlan(struct sk_buff *msg,
1617                                struct cfg80211_registered_device *rdev,
1618                                bool large)
1619 {
1620         struct nlattr *nl_wowlan;
1621
1622         if (!rdev->wiphy.wowlan)
1623                 return 0;
1624
1625         nl_wowlan = nla_nest_start_noflag(msg,
1626                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1627         if (!nl_wowlan)
1628                 return -ENOBUFS;
1629
1630         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1631              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1632             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1633              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1634             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1635              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1636             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1637              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1638             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1639              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1640             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1641              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1642             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1643              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1644             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1645              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1646                 return -ENOBUFS;
1647
1648         if (rdev->wiphy.wowlan->n_patterns) {
1649                 struct nl80211_pattern_support pat = {
1650                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1651                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1652                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1653                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1654                 };
1655
1656                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1657                             sizeof(pat), &pat))
1658                         return -ENOBUFS;
1659         }
1660
1661         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1662             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1663                         rdev->wiphy.wowlan->max_nd_match_sets))
1664                 return -ENOBUFS;
1665
1666         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1667                 return -ENOBUFS;
1668
1669         nla_nest_end(msg, nl_wowlan);
1670
1671         return 0;
1672 }
1673 #endif
1674
1675 static int nl80211_send_coalesce(struct sk_buff *msg,
1676                                  struct cfg80211_registered_device *rdev)
1677 {
1678         struct nl80211_coalesce_rule_support rule;
1679
1680         if (!rdev->wiphy.coalesce)
1681                 return 0;
1682
1683         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1684         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1685         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1686         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1687         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1688         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1689
1690         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1691                 return -ENOBUFS;
1692
1693         return 0;
1694 }
1695
1696 static int
1697 nl80211_send_iftype_data(struct sk_buff *msg,
1698                          const struct ieee80211_supported_band *sband,
1699                          const struct ieee80211_sband_iftype_data *iftdata)
1700 {
1701         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1702
1703         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1704                                 iftdata->types_mask))
1705                 return -ENOBUFS;
1706
1707         if (he_cap->has_he) {
1708                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1709                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1710                             he_cap->he_cap_elem.mac_cap_info) ||
1711                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1712                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1713                             he_cap->he_cap_elem.phy_cap_info) ||
1714                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1715                             sizeof(he_cap->he_mcs_nss_supp),
1716                             &he_cap->he_mcs_nss_supp) ||
1717                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1718                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1719                         return -ENOBUFS;
1720         }
1721
1722         if (sband->band == NL80211_BAND_6GHZ &&
1723             nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA,
1724                     sizeof(iftdata->he_6ghz_capa),
1725                     &iftdata->he_6ghz_capa))
1726                 return -ENOBUFS;
1727
1728         return 0;
1729 }
1730
1731 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1732                                       struct ieee80211_supported_band *sband,
1733                                       bool large)
1734 {
1735         struct nlattr *nl_rates, *nl_rate;
1736         struct ieee80211_rate *rate;
1737         int i;
1738
1739         /* add HT info */
1740         if (sband->ht_cap.ht_supported &&
1741             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1742                      sizeof(sband->ht_cap.mcs),
1743                      &sband->ht_cap.mcs) ||
1744              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1745                          sband->ht_cap.cap) ||
1746              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1747                         sband->ht_cap.ampdu_factor) ||
1748              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1749                         sband->ht_cap.ampdu_density)))
1750                 return -ENOBUFS;
1751
1752         /* add VHT info */
1753         if (sband->vht_cap.vht_supported &&
1754             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1755                      sizeof(sband->vht_cap.vht_mcs),
1756                      &sband->vht_cap.vht_mcs) ||
1757              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1758                          sband->vht_cap.cap)))
1759                 return -ENOBUFS;
1760
1761         if (large && sband->n_iftype_data) {
1762                 struct nlattr *nl_iftype_data =
1763                         nla_nest_start_noflag(msg,
1764                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1765                 int err;
1766
1767                 if (!nl_iftype_data)
1768                         return -ENOBUFS;
1769
1770                 for (i = 0; i < sband->n_iftype_data; i++) {
1771                         struct nlattr *iftdata;
1772
1773                         iftdata = nla_nest_start_noflag(msg, i + 1);
1774                         if (!iftdata)
1775                                 return -ENOBUFS;
1776
1777                         err = nl80211_send_iftype_data(msg, sband,
1778                                                        &sband->iftype_data[i]);
1779                         if (err)
1780                                 return err;
1781
1782                         nla_nest_end(msg, iftdata);
1783                 }
1784
1785                 nla_nest_end(msg, nl_iftype_data);
1786         }
1787
1788         /* add EDMG info */
1789         if (large && sband->edmg_cap.channels &&
1790             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1791                        sband->edmg_cap.channels) ||
1792             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1793                        sband->edmg_cap.bw_config)))
1794
1795                 return -ENOBUFS;
1796
1797         /* add bitrates */
1798         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1799         if (!nl_rates)
1800                 return -ENOBUFS;
1801
1802         for (i = 0; i < sband->n_bitrates; i++) {
1803                 nl_rate = nla_nest_start_noflag(msg, i);
1804                 if (!nl_rate)
1805                         return -ENOBUFS;
1806
1807                 rate = &sband->bitrates[i];
1808                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1809                                 rate->bitrate))
1810                         return -ENOBUFS;
1811                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1812                     nla_put_flag(msg,
1813                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1814                         return -ENOBUFS;
1815
1816                 nla_nest_end(msg, nl_rate);
1817         }
1818
1819         nla_nest_end(msg, nl_rates);
1820
1821         return 0;
1822 }
1823
1824 static int
1825 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1826                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1827 {
1828         u16 stypes;
1829         struct nlattr *nl_ftypes, *nl_ifs;
1830         enum nl80211_iftype ift;
1831         int i;
1832
1833         if (!mgmt_stypes)
1834                 return 0;
1835
1836         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1837         if (!nl_ifs)
1838                 return -ENOBUFS;
1839
1840         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1841                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1842                 if (!nl_ftypes)
1843                         return -ENOBUFS;
1844                 i = 0;
1845                 stypes = mgmt_stypes[ift].tx;
1846                 while (stypes) {
1847                         if ((stypes & 1) &&
1848                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1849                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1850                                 return -ENOBUFS;
1851                         stypes >>= 1;
1852                         i++;
1853                 }
1854                 nla_nest_end(msg, nl_ftypes);
1855         }
1856
1857         nla_nest_end(msg, nl_ifs);
1858
1859         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1860         if (!nl_ifs)
1861                 return -ENOBUFS;
1862
1863         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1864                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1865                 if (!nl_ftypes)
1866                         return -ENOBUFS;
1867                 i = 0;
1868                 stypes = mgmt_stypes[ift].rx;
1869                 while (stypes) {
1870                         if ((stypes & 1) &&
1871                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1872                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1873                                 return -ENOBUFS;
1874                         stypes >>= 1;
1875                         i++;
1876                 }
1877                 nla_nest_end(msg, nl_ftypes);
1878         }
1879         nla_nest_end(msg, nl_ifs);
1880
1881         return 0;
1882 }
1883
1884 #define CMD(op, n)                                                      \
1885          do {                                                           \
1886                 if (rdev->ops->op) {                                    \
1887                         i++;                                            \
1888                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1889                                 goto nla_put_failure;                   \
1890                 }                                                       \
1891         } while (0)
1892
1893 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1894                                         struct sk_buff *msg)
1895 {
1896         int i = 0;
1897
1898         /*
1899          * do *NOT* add anything into this function, new things need to be
1900          * advertised only to new versions of userspace that can deal with
1901          * the split (and they can't possibly care about new features...
1902          */
1903         CMD(add_virtual_intf, NEW_INTERFACE);
1904         CMD(change_virtual_intf, SET_INTERFACE);
1905         CMD(add_key, NEW_KEY);
1906         CMD(start_ap, START_AP);
1907         CMD(add_station, NEW_STATION);
1908         CMD(add_mpath, NEW_MPATH);
1909         CMD(update_mesh_config, SET_MESH_CONFIG);
1910         CMD(change_bss, SET_BSS);
1911         CMD(auth, AUTHENTICATE);
1912         CMD(assoc, ASSOCIATE);
1913         CMD(deauth, DEAUTHENTICATE);
1914         CMD(disassoc, DISASSOCIATE);
1915         CMD(join_ibss, JOIN_IBSS);
1916         CMD(join_mesh, JOIN_MESH);
1917         CMD(set_pmksa, SET_PMKSA);
1918         CMD(del_pmksa, DEL_PMKSA);
1919         CMD(flush_pmksa, FLUSH_PMKSA);
1920         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1921                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1922         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1923         CMD(mgmt_tx, FRAME);
1924         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1925         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1926                 i++;
1927                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1928                         goto nla_put_failure;
1929         }
1930         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1931             rdev->ops->join_mesh) {
1932                 i++;
1933                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1934                         goto nla_put_failure;
1935         }
1936         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1937                 CMD(tdls_mgmt, TDLS_MGMT);
1938                 CMD(tdls_oper, TDLS_OPER);
1939         }
1940         if (rdev->wiphy.max_sched_scan_reqs)
1941                 CMD(sched_scan_start, START_SCHED_SCAN);
1942         CMD(probe_client, PROBE_CLIENT);
1943         CMD(set_noack_map, SET_NOACK_MAP);
1944         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1945                 i++;
1946                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1947                         goto nla_put_failure;
1948         }
1949         CMD(start_p2p_device, START_P2P_DEVICE);
1950         CMD(set_mcast_rate, SET_MCAST_RATE);
1951 #ifdef CONFIG_NL80211_TESTMODE
1952         CMD(testmode_cmd, TESTMODE);
1953 #endif
1954
1955         if (rdev->ops->connect || rdev->ops->auth) {
1956                 i++;
1957                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1958                         goto nla_put_failure;
1959         }
1960
1961         if (rdev->ops->disconnect || rdev->ops->deauth) {
1962                 i++;
1963                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1964                         goto nla_put_failure;
1965         }
1966
1967         return i;
1968  nla_put_failure:
1969         return -ENOBUFS;
1970 }
1971
1972 static int
1973 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1974                            struct sk_buff *msg)
1975 {
1976         struct nlattr *ftm;
1977
1978         if (!cap->ftm.supported)
1979                 return 0;
1980
1981         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1982         if (!ftm)
1983                 return -ENOBUFS;
1984
1985         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1986                 return -ENOBUFS;
1987         if (cap->ftm.non_asap &&
1988             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1989                 return -ENOBUFS;
1990         if (cap->ftm.request_lci &&
1991             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1992                 return -ENOBUFS;
1993         if (cap->ftm.request_civicloc &&
1994             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1995                 return -ENOBUFS;
1996         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1997                         cap->ftm.preambles))
1998                 return -ENOBUFS;
1999         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
2000                         cap->ftm.bandwidths))
2001                 return -ENOBUFS;
2002         if (cap->ftm.max_bursts_exponent >= 0 &&
2003             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
2004                         cap->ftm.max_bursts_exponent))
2005                 return -ENOBUFS;
2006         if (cap->ftm.max_ftms_per_burst &&
2007             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
2008                         cap->ftm.max_ftms_per_burst))
2009                 return -ENOBUFS;
2010         if (cap->ftm.trigger_based &&
2011             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED))
2012                 return -ENOBUFS;
2013         if (cap->ftm.non_trigger_based &&
2014             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED))
2015                 return -ENOBUFS;
2016
2017         nla_nest_end(msg, ftm);
2018         return 0;
2019 }
2020
2021 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
2022                                   struct sk_buff *msg)
2023 {
2024         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
2025         struct nlattr *pmsr, *caps;
2026
2027         if (!cap)
2028                 return 0;
2029
2030         /*
2031          * we don't need to clean up anything here since the caller
2032          * will genlmsg_cancel() if we fail
2033          */
2034
2035         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
2036         if (!pmsr)
2037                 return -ENOBUFS;
2038
2039         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
2040                 return -ENOBUFS;
2041
2042         if (cap->report_ap_tsf &&
2043             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
2044                 return -ENOBUFS;
2045
2046         if (cap->randomize_mac_addr &&
2047             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
2048                 return -ENOBUFS;
2049
2050         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
2051         if (!caps)
2052                 return -ENOBUFS;
2053
2054         if (nl80211_send_pmsr_ftm_capa(cap, msg))
2055                 return -ENOBUFS;
2056
2057         nla_nest_end(msg, caps);
2058         nla_nest_end(msg, pmsr);
2059
2060         return 0;
2061 }
2062
2063 static int
2064 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev,
2065                               struct sk_buff *msg)
2066 {
2067         int i;
2068         struct nlattr *nested, *nested_akms;
2069         const struct wiphy_iftype_akm_suites *iftype_akms;
2070
2071         if (!rdev->wiphy.num_iftype_akm_suites ||
2072             !rdev->wiphy.iftype_akm_suites)
2073                 return 0;
2074
2075         nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES);
2076         if (!nested)
2077                 return -ENOBUFS;
2078
2079         for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) {
2080                 nested_akms = nla_nest_start(msg, i + 1);
2081                 if (!nested_akms)
2082                         return -ENOBUFS;
2083
2084                 iftype_akms = &rdev->wiphy.iftype_akm_suites[i];
2085
2086                 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES,
2087                                         iftype_akms->iftypes_mask))
2088                         return -ENOBUFS;
2089
2090                 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES,
2091                             sizeof(u32) * iftype_akms->n_akm_suites,
2092                             iftype_akms->akm_suites)) {
2093                         return -ENOBUFS;
2094                 }
2095                 nla_nest_end(msg, nested_akms);
2096         }
2097
2098         nla_nest_end(msg, nested);
2099
2100         return 0;
2101 }
2102
2103 static int
2104 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev,
2105                                struct sk_buff *msg)
2106 {
2107         struct nlattr *supp;
2108
2109         if (!rdev->wiphy.tid_config_support.vif &&
2110             !rdev->wiphy.tid_config_support.peer)
2111                 return 0;
2112
2113         supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG);
2114         if (!supp)
2115                 return -ENOSPC;
2116
2117         if (rdev->wiphy.tid_config_support.vif &&
2118             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP,
2119                               rdev->wiphy.tid_config_support.vif,
2120                               NL80211_TID_CONFIG_ATTR_PAD))
2121                 goto fail;
2122
2123         if (rdev->wiphy.tid_config_support.peer &&
2124             nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP,
2125                               rdev->wiphy.tid_config_support.peer,
2126                               NL80211_TID_CONFIG_ATTR_PAD))
2127                 goto fail;
2128
2129         /* for now we just use the same value ... makes more sense */
2130         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
2131                        rdev->wiphy.tid_config_support.max_retry))
2132                 goto fail;
2133         if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG,
2134                        rdev->wiphy.tid_config_support.max_retry))
2135                 goto fail;
2136
2137         nla_nest_end(msg, supp);
2138
2139         return 0;
2140 fail:
2141         nla_nest_cancel(msg, supp);
2142         return -ENOBUFS;
2143 }
2144
2145 static int
2146 nl80211_put_sar_specs(struct cfg80211_registered_device *rdev,
2147                       struct sk_buff *msg)
2148 {
2149         struct nlattr *sar_capa, *specs, *sub_freq_range;
2150         u8 num_freq_ranges;
2151         int i;
2152
2153         if (!rdev->wiphy.sar_capa)
2154                 return 0;
2155
2156         num_freq_ranges = rdev->wiphy.sar_capa->num_freq_ranges;
2157
2158         sar_capa = nla_nest_start(msg, NL80211_ATTR_SAR_SPEC);
2159         if (!sar_capa)
2160                 return -ENOSPC;
2161
2162         if (nla_put_u32(msg, NL80211_SAR_ATTR_TYPE, rdev->wiphy.sar_capa->type))
2163                 goto fail;
2164
2165         specs = nla_nest_start(msg, NL80211_SAR_ATTR_SPECS);
2166         if (!specs)
2167                 goto fail;
2168
2169         /* report supported freq_ranges */
2170         for (i = 0; i < num_freq_ranges; i++) {
2171                 sub_freq_range = nla_nest_start(msg, i + 1);
2172                 if (!sub_freq_range)
2173                         goto fail;
2174
2175                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_START_FREQ,
2176                                 rdev->wiphy.sar_capa->freq_ranges[i].start_freq))
2177                         goto fail;
2178
2179                 if (nla_put_u32(msg, NL80211_SAR_ATTR_SPECS_END_FREQ,
2180                                 rdev->wiphy.sar_capa->freq_ranges[i].end_freq))
2181                         goto fail;
2182
2183                 nla_nest_end(msg, sub_freq_range);
2184         }
2185
2186         nla_nest_end(msg, specs);
2187         nla_nest_end(msg, sar_capa);
2188
2189         return 0;
2190 fail:
2191         nla_nest_cancel(msg, sar_capa);
2192         return -ENOBUFS;
2193 }
2194
2195 struct nl80211_dump_wiphy_state {
2196         s64 filter_wiphy;
2197         long start;
2198         long split_start, band_start, chan_start, capa_start;
2199         bool split;
2200 };
2201
2202 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
2203                               enum nl80211_commands cmd,
2204                               struct sk_buff *msg, u32 portid, u32 seq,
2205                               int flags, struct nl80211_dump_wiphy_state *state)
2206 {
2207         void *hdr;
2208         struct nlattr *nl_bands, *nl_band;
2209         struct nlattr *nl_freqs, *nl_freq;
2210         struct nlattr *nl_cmds;
2211         enum nl80211_band band;
2212         struct ieee80211_channel *chan;
2213         int i;
2214         const struct ieee80211_txrx_stypes *mgmt_stypes =
2215                                 rdev->wiphy.mgmt_stypes;
2216         u32 features;
2217
2218         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
2219         if (!hdr)
2220                 return -ENOBUFS;
2221
2222         if (WARN_ON(!state))
2223                 return -EINVAL;
2224
2225         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
2226             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
2227                            wiphy_name(&rdev->wiphy)) ||
2228             nla_put_u32(msg, NL80211_ATTR_GENERATION,
2229                         cfg80211_rdev_list_generation))
2230                 goto nla_put_failure;
2231
2232         if (cmd != NL80211_CMD_NEW_WIPHY)
2233                 goto finish;
2234
2235         switch (state->split_start) {
2236         case 0:
2237                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
2238                                rdev->wiphy.retry_short) ||
2239                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
2240                                rdev->wiphy.retry_long) ||
2241                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
2242                                 rdev->wiphy.frag_threshold) ||
2243                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
2244                                 rdev->wiphy.rts_threshold) ||
2245                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
2246                                rdev->wiphy.coverage_class) ||
2247                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
2248                                rdev->wiphy.max_scan_ssids) ||
2249                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
2250                                rdev->wiphy.max_sched_scan_ssids) ||
2251                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
2252                                 rdev->wiphy.max_scan_ie_len) ||
2253                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
2254                                 rdev->wiphy.max_sched_scan_ie_len) ||
2255                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
2256                                rdev->wiphy.max_match_sets))
2257                         goto nla_put_failure;
2258
2259                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
2260                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
2261                         goto nla_put_failure;
2262                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
2263                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
2264                         goto nla_put_failure;
2265                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
2266                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
2267                         goto nla_put_failure;
2268                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
2269                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
2270                         goto nla_put_failure;
2271                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
2272                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
2273                         goto nla_put_failure;
2274                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
2275                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
2276                         goto nla_put_failure;
2277                 state->split_start++;
2278                 if (state->split)
2279                         break;
2280                 fallthrough;
2281         case 1:
2282                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
2283                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
2284                             rdev->wiphy.cipher_suites))
2285                         goto nla_put_failure;
2286
2287                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
2288                                rdev->wiphy.max_num_pmkids))
2289                         goto nla_put_failure;
2290
2291                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
2292                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
2293                         goto nla_put_failure;
2294
2295                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
2296                                 rdev->wiphy.available_antennas_tx) ||
2297                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
2298                                 rdev->wiphy.available_antennas_rx))
2299                         goto nla_put_failure;
2300
2301                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2302                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2303                                 rdev->wiphy.probe_resp_offload))
2304                         goto nla_put_failure;
2305
2306                 if ((rdev->wiphy.available_antennas_tx ||
2307                      rdev->wiphy.available_antennas_rx) &&
2308                     rdev->ops->get_antenna) {
2309                         u32 tx_ant = 0, rx_ant = 0;
2310                         int res;
2311
2312                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2313                         if (!res) {
2314                                 if (nla_put_u32(msg,
2315                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2316                                                 tx_ant) ||
2317                                     nla_put_u32(msg,
2318                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2319                                                 rx_ant))
2320                                         goto nla_put_failure;
2321                         }
2322                 }
2323
2324                 state->split_start++;
2325                 if (state->split)
2326                         break;
2327                 fallthrough;
2328         case 2:
2329                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2330                                         rdev->wiphy.interface_modes))
2331                                 goto nla_put_failure;
2332                 state->split_start++;
2333                 if (state->split)
2334                         break;
2335                 fallthrough;
2336         case 3:
2337                 nl_bands = nla_nest_start_noflag(msg,
2338                                                  NL80211_ATTR_WIPHY_BANDS);
2339                 if (!nl_bands)
2340                         goto nla_put_failure;
2341
2342                 for (band = state->band_start;
2343                      band < NUM_NL80211_BANDS; band++) {
2344                         struct ieee80211_supported_band *sband;
2345
2346                         /* omit higher bands for ancient software */
2347                         if (band > NL80211_BAND_5GHZ && !state->split)
2348                                 break;
2349
2350                         sband = rdev->wiphy.bands[band];
2351
2352                         if (!sband)
2353                                 continue;
2354
2355                         nl_band = nla_nest_start_noflag(msg, band);
2356                         if (!nl_band)
2357                                 goto nla_put_failure;
2358
2359                         switch (state->chan_start) {
2360                         case 0:
2361                                 if (nl80211_send_band_rateinfo(msg, sband,
2362                                                                state->split))
2363                                         goto nla_put_failure;
2364                                 state->chan_start++;
2365                                 if (state->split)
2366                                         break;
2367                                 fallthrough;
2368                         default:
2369                                 /* add frequencies */
2370                                 nl_freqs = nla_nest_start_noflag(msg,
2371                                                                  NL80211_BAND_ATTR_FREQS);
2372                                 if (!nl_freqs)
2373                                         goto nla_put_failure;
2374
2375                                 for (i = state->chan_start - 1;
2376                                      i < sband->n_channels;
2377                                      i++) {
2378                                         nl_freq = nla_nest_start_noflag(msg,
2379                                                                         i);
2380                                         if (!nl_freq)
2381                                                 goto nla_put_failure;
2382
2383                                         chan = &sband->channels[i];
2384
2385                                         if (nl80211_msg_put_channel(
2386                                                         msg, &rdev->wiphy, chan,
2387                                                         state->split))
2388                                                 goto nla_put_failure;
2389
2390                                         nla_nest_end(msg, nl_freq);
2391                                         if (state->split)
2392                                                 break;
2393                                 }
2394                                 if (i < sband->n_channels)
2395                                         state->chan_start = i + 2;
2396                                 else
2397                                         state->chan_start = 0;
2398                                 nla_nest_end(msg, nl_freqs);
2399                         }
2400
2401                         nla_nest_end(msg, nl_band);
2402
2403                         if (state->split) {
2404                                 /* start again here */
2405                                 if (state->chan_start)
2406                                         band--;
2407                                 break;
2408                         }
2409                 }
2410                 nla_nest_end(msg, nl_bands);
2411
2412                 if (band < NUM_NL80211_BANDS)
2413                         state->band_start = band + 1;
2414                 else
2415                         state->band_start = 0;
2416
2417                 /* if bands & channels are done, continue outside */
2418                 if (state->band_start == 0 && state->chan_start == 0)
2419                         state->split_start++;
2420                 if (state->split)
2421                         break;
2422                 fallthrough;
2423         case 4:
2424                 nl_cmds = nla_nest_start_noflag(msg,
2425                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2426                 if (!nl_cmds)
2427                         goto nla_put_failure;
2428
2429                 i = nl80211_add_commands_unsplit(rdev, msg);
2430                 if (i < 0)
2431                         goto nla_put_failure;
2432                 if (state->split) {
2433                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2434                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2435                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2436                                 CMD(channel_switch, CHANNEL_SWITCH);
2437                         CMD(set_qos_map, SET_QOS_MAP);
2438                         if (rdev->wiphy.features &
2439                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2440                                 CMD(add_tx_ts, ADD_TX_TS);
2441                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2442                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2443                         CMD(update_ft_ies, UPDATE_FT_IES);
2444                         if (rdev->wiphy.sar_capa)
2445                                 CMD(set_sar_specs, SET_SAR_SPECS);
2446                 }
2447 #undef CMD
2448
2449                 nla_nest_end(msg, nl_cmds);
2450                 state->split_start++;
2451                 if (state->split)
2452                         break;
2453                 fallthrough;
2454         case 5:
2455                 if (rdev->ops->remain_on_channel &&
2456                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2457                     nla_put_u32(msg,
2458                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2459                                 rdev->wiphy.max_remain_on_channel_duration))
2460                         goto nla_put_failure;
2461
2462                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2463                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2464                         goto nla_put_failure;
2465
2466                 state->split_start++;
2467                 if (state->split)
2468                         break;
2469                 fallthrough;
2470         case 6:
2471 #ifdef CONFIG_PM
2472                 if (nl80211_send_wowlan(msg, rdev, state->split))
2473                         goto nla_put_failure;
2474                 state->split_start++;
2475                 if (state->split)
2476                         break;
2477 #else
2478                 state->split_start++;
2479 #endif
2480                 fallthrough;
2481         case 7:
2482                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2483                                         rdev->wiphy.software_iftypes))
2484                         goto nla_put_failure;
2485
2486                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2487                                                    state->split))
2488                         goto nla_put_failure;
2489
2490                 state->split_start++;
2491                 if (state->split)
2492                         break;
2493                 fallthrough;
2494         case 8:
2495                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2496                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2497                                 rdev->wiphy.ap_sme_capa))
2498                         goto nla_put_failure;
2499
2500                 features = rdev->wiphy.features;
2501                 /*
2502                  * We can only add the per-channel limit information if the
2503                  * dump is split, otherwise it makes it too big. Therefore
2504                  * only advertise it in that case.
2505                  */
2506                 if (state->split)
2507                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2508                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2509                         goto nla_put_failure;
2510
2511                 if (rdev->wiphy.ht_capa_mod_mask &&
2512                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2513                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2514                             rdev->wiphy.ht_capa_mod_mask))
2515                         goto nla_put_failure;
2516
2517                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2518                     rdev->wiphy.max_acl_mac_addrs &&
2519                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2520                                 rdev->wiphy.max_acl_mac_addrs))
2521                         goto nla_put_failure;
2522
2523                 /*
2524                  * Any information below this point is only available to
2525                  * applications that can deal with it being split. This
2526                  * helps ensure that newly added capabilities don't break
2527                  * older tools by overrunning their buffers.
2528                  *
2529                  * We still increment split_start so that in the split
2530                  * case we'll continue with more data in the next round,
2531                  * but break unconditionally so unsplit data stops here.
2532                  */
2533                 if (state->split)
2534                         state->split_start++;
2535                 else
2536                         state->split_start = 0;
2537                 break;
2538         case 9:
2539                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2540                         goto nla_put_failure;
2541
2542                 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
2543                                 rdev->wiphy.max_sched_scan_plans) ||
2544                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
2545                                 rdev->wiphy.max_sched_scan_plan_interval) ||
2546                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
2547                                 rdev->wiphy.max_sched_scan_plan_iterations))
2548                         goto nla_put_failure;
2549
2550                 if (rdev->wiphy.extended_capabilities &&
2551                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2552                              rdev->wiphy.extended_capabilities_len,
2553                              rdev->wiphy.extended_capabilities) ||
2554                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2555                              rdev->wiphy.extended_capabilities_len,
2556                              rdev->wiphy.extended_capabilities_mask)))
2557                         goto nla_put_failure;
2558
2559                 if (rdev->wiphy.vht_capa_mod_mask &&
2560                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2561                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2562                             rdev->wiphy.vht_capa_mod_mask))
2563                         goto nla_put_failure;
2564
2565                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2566                             rdev->wiphy.perm_addr))
2567                         goto nla_put_failure;
2568
2569                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2570                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2571                             rdev->wiphy.addr_mask))
2572                         goto nla_put_failure;
2573
2574                 if (rdev->wiphy.n_addresses > 1) {
2575                         void *attr;
2576
2577                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2578                         if (!attr)
2579                                 goto nla_put_failure;
2580
2581                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2582                                 if (nla_put(msg, i + 1, ETH_ALEN,
2583                                             rdev->wiphy.addresses[i].addr))
2584                                         goto nla_put_failure;
2585
2586                         nla_nest_end(msg, attr);
2587                 }
2588
2589                 state->split_start++;
2590                 break;
2591         case 10:
2592                 if (nl80211_send_coalesce(msg, rdev))
2593                         goto nla_put_failure;
2594
2595                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2596                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2597                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2598                         goto nla_put_failure;
2599
2600                 if (rdev->wiphy.max_ap_assoc_sta &&
2601                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2602                                 rdev->wiphy.max_ap_assoc_sta))
2603                         goto nla_put_failure;
2604
2605                 state->split_start++;
2606                 break;
2607         case 11:
2608                 if (rdev->wiphy.n_vendor_commands) {
2609                         const struct nl80211_vendor_cmd_info *info;
2610                         struct nlattr *nested;
2611
2612                         nested = nla_nest_start_noflag(msg,
2613                                                        NL80211_ATTR_VENDOR_DATA);
2614                         if (!nested)
2615                                 goto nla_put_failure;
2616
2617                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2618                                 info = &rdev->wiphy.vendor_commands[i].info;
2619                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2620                                         goto nla_put_failure;
2621                         }
2622                         nla_nest_end(msg, nested);
2623                 }
2624
2625                 if (rdev->wiphy.n_vendor_events) {
2626                         const struct nl80211_vendor_cmd_info *info;
2627                         struct nlattr *nested;
2628
2629                         nested = nla_nest_start_noflag(msg,
2630                                                        NL80211_ATTR_VENDOR_EVENTS);
2631                         if (!nested)
2632                                 goto nla_put_failure;
2633
2634                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2635                                 info = &rdev->wiphy.vendor_events[i];
2636                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2637                                         goto nla_put_failure;
2638                         }
2639                         nla_nest_end(msg, nested);
2640                 }
2641                 state->split_start++;
2642                 break;
2643         case 12:
2644                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2645                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2646                                rdev->wiphy.max_num_csa_counters))
2647                         goto nla_put_failure;
2648
2649                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2650                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2651                         goto nla_put_failure;
2652
2653                 if (rdev->wiphy.max_sched_scan_reqs &&
2654                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2655                                 rdev->wiphy.max_sched_scan_reqs))
2656                         goto nla_put_failure;
2657
2658                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2659                             sizeof(rdev->wiphy.ext_features),
2660                             rdev->wiphy.ext_features))
2661                         goto nla_put_failure;
2662
2663                 if (rdev->wiphy.bss_select_support) {
2664                         struct nlattr *nested;
2665                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2666
2667                         nested = nla_nest_start_noflag(msg,
2668                                                        NL80211_ATTR_BSS_SELECT);
2669                         if (!nested)
2670                                 goto nla_put_failure;
2671
2672                         i = 0;
2673                         while (bss_select_support) {
2674                                 if ((bss_select_support & 1) &&
2675                                     nla_put_flag(msg, i))
2676                                         goto nla_put_failure;
2677                                 i++;
2678                                 bss_select_support >>= 1;
2679                         }
2680                         nla_nest_end(msg, nested);
2681                 }
2682
2683                 state->split_start++;
2684                 break;
2685         case 13:
2686                 if (rdev->wiphy.num_iftype_ext_capab &&
2687                     rdev->wiphy.iftype_ext_capab) {
2688                         struct nlattr *nested_ext_capab, *nested;
2689
2690                         nested = nla_nest_start_noflag(msg,
2691                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2692                         if (!nested)
2693                                 goto nla_put_failure;
2694
2695                         for (i = state->capa_start;
2696                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2697                                 const struct wiphy_iftype_ext_capab *capab;
2698
2699                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2700
2701                                 nested_ext_capab = nla_nest_start_noflag(msg,
2702                                                                          i);
2703                                 if (!nested_ext_capab ||
2704                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2705                                                 capab->iftype) ||
2706                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2707                                             capab->extended_capabilities_len,
2708                                             capab->extended_capabilities) ||
2709                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2710                                             capab->extended_capabilities_len,
2711                                             capab->extended_capabilities_mask))
2712                                         goto nla_put_failure;
2713
2714                                 nla_nest_end(msg, nested_ext_capab);
2715                                 if (state->split)
2716                                         break;
2717                         }
2718                         nla_nest_end(msg, nested);
2719                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2720                                 state->capa_start = i + 1;
2721                                 break;
2722                         }
2723                 }
2724
2725                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2726                                 rdev->wiphy.nan_supported_bands))
2727                         goto nla_put_failure;
2728
2729                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2730                                             NL80211_EXT_FEATURE_TXQS)) {
2731                         struct cfg80211_txq_stats txqstats = {};
2732                         int res;
2733
2734                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2735                         if (!res &&
2736                             !nl80211_put_txq_stats(msg, &txqstats,
2737                                                    NL80211_ATTR_TXQ_STATS))
2738                                 goto nla_put_failure;
2739
2740                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2741                                         rdev->wiphy.txq_limit))
2742                                 goto nla_put_failure;
2743                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2744                                         rdev->wiphy.txq_memory_limit))
2745                                 goto nla_put_failure;
2746                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2747                                         rdev->wiphy.txq_quantum))
2748                                 goto nla_put_failure;
2749                 }
2750
2751                 state->split_start++;
2752                 break;
2753         case 14:
2754                 if (nl80211_send_pmsr_capa(rdev, msg))
2755                         goto nla_put_failure;
2756
2757                 state->split_start++;
2758                 break;
2759         case 15:
2760                 if (rdev->wiphy.akm_suites &&
2761                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2762                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2763                             rdev->wiphy.akm_suites))
2764                         goto nla_put_failure;
2765
2766                 if (nl80211_put_iftype_akm_suites(rdev, msg))
2767                         goto nla_put_failure;
2768
2769                 if (nl80211_put_tid_config_support(rdev, msg))
2770                         goto nla_put_failure;
2771                 state->split_start++;
2772                 break;
2773         case 16:
2774                 if (nl80211_put_sar_specs(rdev, msg))
2775                         goto nla_put_failure;
2776
2777                 /* done */
2778                 state->split_start = 0;
2779                 break;
2780         }
2781  finish:
2782         genlmsg_end(msg, hdr);
2783         return 0;
2784
2785  nla_put_failure:
2786         genlmsg_cancel(msg, hdr);
2787         return -EMSGSIZE;
2788 }
2789
2790 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2791                                     struct netlink_callback *cb,
2792                                     struct nl80211_dump_wiphy_state *state)
2793 {
2794         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2795         int ret;
2796
2797         if (!tb)
2798                 return -ENOMEM;
2799
2800         ret = nlmsg_parse_deprecated(cb->nlh,
2801                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2802                                      tb, nl80211_fam.maxattr,
2803                                      nl80211_policy, NULL);
2804         /* ignore parse errors for backward compatibility */
2805         if (ret) {
2806                 ret = 0;
2807                 goto out;
2808         }
2809
2810         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2811         if (tb[NL80211_ATTR_WIPHY])
2812                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2813         if (tb[NL80211_ATTR_WDEV])
2814                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2815         if (tb[NL80211_ATTR_IFINDEX]) {
2816                 struct net_device *netdev;
2817                 struct cfg80211_registered_device *rdev;
2818                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2819
2820                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2821                 if (!netdev) {
2822                         ret = -ENODEV;
2823                         goto out;
2824                 }
2825                 if (netdev->ieee80211_ptr) {
2826                         rdev = wiphy_to_rdev(
2827                                 netdev->ieee80211_ptr->wiphy);
2828                         state->filter_wiphy = rdev->wiphy_idx;
2829                 }
2830         }
2831
2832         ret = 0;
2833 out:
2834         kfree(tb);
2835         return ret;
2836 }
2837
2838 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2839 {
2840         int idx = 0, ret;
2841         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2842         struct cfg80211_registered_device *rdev;
2843
2844         rtnl_lock();
2845         if (!state) {
2846                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2847                 if (!state) {
2848                         rtnl_unlock();
2849                         return -ENOMEM;
2850                 }
2851                 state->filter_wiphy = -1;
2852                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2853                 if (ret) {
2854                         kfree(state);
2855                         rtnl_unlock();
2856                         return ret;
2857                 }
2858                 cb->args[0] = (long)state;
2859         }
2860
2861         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2862                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2863                         continue;
2864                 if (++idx <= state->start)
2865                         continue;
2866                 if (state->filter_wiphy != -1 &&
2867                     state->filter_wiphy != rdev->wiphy_idx)
2868                         continue;
2869                 /* attempt to fit multiple wiphy data chunks into the skb */
2870                 do {
2871                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2872                                                  skb,
2873                                                  NETLINK_CB(cb->skb).portid,
2874                                                  cb->nlh->nlmsg_seq,
2875                                                  NLM_F_MULTI, state);
2876                         if (ret < 0) {
2877                                 /*
2878                                  * If sending the wiphy data didn't fit (ENOBUFS
2879                                  * or EMSGSIZE returned), this SKB is still
2880                                  * empty (so it's not too big because another
2881                                  * wiphy dataset is already in the skb) and
2882                                  * we've not tried to adjust the dump allocation
2883                                  * yet ... then adjust the alloc size to be
2884                                  * bigger, and return 1 but with the empty skb.
2885                                  * This results in an empty message being RX'ed
2886                                  * in userspace, but that is ignored.
2887                                  *
2888                                  * We can then retry with the larger buffer.
2889                                  */
2890                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2891                                     !skb->len && !state->split &&
2892                                     cb->min_dump_alloc < 4096) {
2893                                         cb->min_dump_alloc = 4096;
2894                                         state->split_start = 0;
2895                                         rtnl_unlock();
2896                                         return 1;
2897                                 }
2898                                 idx--;
2899                                 break;
2900                         }
2901                 } while (state->split_start > 0);
2902                 break;
2903         }
2904         rtnl_unlock();
2905
2906         state->start = idx;
2907
2908         return skb->len;
2909 }
2910
2911 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2912 {
2913         kfree((void *)cb->args[0]);
2914         return 0;
2915 }
2916
2917 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2918 {
2919         struct sk_buff *msg;
2920         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2921         struct nl80211_dump_wiphy_state state = {};
2922
2923         msg = nlmsg_new(4096, GFP_KERNEL);
2924         if (!msg)
2925                 return -ENOMEM;
2926
2927         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2928                                info->snd_portid, info->snd_seq, 0,
2929                                &state) < 0) {
2930                 nlmsg_free(msg);
2931                 return -ENOBUFS;
2932         }
2933
2934         return genlmsg_reply(msg, info);
2935 }
2936
2937 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2938         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2939         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2940         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2941         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2942         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2943 };
2944
2945 static int parse_txq_params(struct nlattr *tb[],
2946                             struct ieee80211_txq_params *txq_params)
2947 {
2948         u8 ac;
2949
2950         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2951             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2952             !tb[NL80211_TXQ_ATTR_AIFS])
2953                 return -EINVAL;
2954
2955         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2956         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2957         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2958         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2959         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2960
2961         if (ac >= NL80211_NUM_ACS)
2962                 return -EINVAL;
2963         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2964         return 0;
2965 }
2966
2967 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2968 {
2969         /*
2970          * You can only set the channel explicitly for some interfaces,
2971          * most have their channel managed via their respective
2972          * "establish a connection" command (connect, join, ...)
2973          *
2974          * For AP/GO and mesh mode, the channel can be set with the
2975          * channel userspace API, but is only stored and passed to the
2976          * low-level driver when the AP starts or the mesh is joined.
2977          * This is for backward compatibility, userspace can also give
2978          * the channel in the start-ap or join-mesh commands instead.
2979          *
2980          * Monitors are special as they are normally slaved to
2981          * whatever else is going on, so they have their own special
2982          * operation to set the monitor channel if possible.
2983          */
2984         return !wdev ||
2985                 wdev->iftype == NL80211_IFTYPE_AP ||
2986                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2987                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2988                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2989 }
2990
2991 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2992                           struct genl_info *info,
2993                           struct cfg80211_chan_def *chandef)
2994 {
2995         struct netlink_ext_ack *extack = info->extack;
2996         struct nlattr **attrs = info->attrs;
2997         u32 control_freq;
2998
2999         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
3000                 return -EINVAL;
3001
3002         control_freq = MHZ_TO_KHZ(
3003                         nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
3004         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
3005                 control_freq +=
3006                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
3007
3008         memset(chandef, 0, sizeof(*chandef));
3009         chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq);
3010         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
3011         chandef->center_freq1 = KHZ_TO_MHZ(control_freq);
3012         chandef->freq1_offset = control_freq % 1000;
3013         chandef->center_freq2 = 0;
3014
3015         /* Primary channel not allowed */
3016         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
3017                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
3018                                     "Channel is disabled");
3019                 return -EINVAL;
3020         }
3021
3022         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
3023                 enum nl80211_channel_type chantype;
3024
3025                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
3026
3027                 switch (chantype) {
3028                 case NL80211_CHAN_NO_HT:
3029                 case NL80211_CHAN_HT20:
3030                 case NL80211_CHAN_HT40PLUS:
3031                 case NL80211_CHAN_HT40MINUS:
3032                         cfg80211_chandef_create(chandef, chandef->chan,
3033                                                 chantype);
3034                         /* user input for center_freq is incorrect */
3035                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
3036                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
3037                                 NL_SET_ERR_MSG_ATTR(extack,
3038                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
3039                                                     "bad center frequency 1");
3040                                 return -EINVAL;
3041                         }
3042                         /* center_freq2 must be zero */
3043                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
3044                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
3045                                 NL_SET_ERR_MSG_ATTR(extack,
3046                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
3047                                                     "center frequency 2 can't be used");
3048                                 return -EINVAL;
3049                         }
3050                         break;
3051                 default:
3052                         NL_SET_ERR_MSG_ATTR(extack,
3053                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
3054                                             "invalid channel type");
3055                         return -EINVAL;
3056                 }
3057         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
3058                 chandef->width =
3059                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
3060                 if (attrs[NL80211_ATTR_CENTER_FREQ1]) {
3061                         chandef->center_freq1 =
3062                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
3063                         if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET])
3064                                 chandef->freq1_offset = nla_get_u32(
3065                                       attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]);
3066                         else
3067                                 chandef->freq1_offset = 0;
3068                 }
3069                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
3070                         chandef->center_freq2 =
3071                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
3072         }
3073
3074         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
3075                 chandef->edmg.channels =
3076                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
3077
3078                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
3079                         chandef->edmg.bw_config =
3080                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
3081         } else {
3082                 chandef->edmg.bw_config = 0;
3083                 chandef->edmg.channels = 0;
3084         }
3085
3086         if (!cfg80211_chandef_valid(chandef)) {
3087                 NL_SET_ERR_MSG(extack, "invalid channel definition");
3088                 return -EINVAL;
3089         }
3090
3091         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
3092                                      IEEE80211_CHAN_DISABLED)) {
3093                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
3094                 return -EINVAL;
3095         }
3096
3097         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
3098              chandef->width == NL80211_CHAN_WIDTH_10) &&
3099             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
3100                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
3101                 return -EINVAL;
3102         }
3103
3104         return 0;
3105 }
3106
3107 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
3108                                  struct net_device *dev,
3109                                  struct genl_info *info)
3110 {
3111         struct cfg80211_chan_def chandef;
3112         int result;
3113         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
3114         struct wireless_dev *wdev = NULL;
3115
3116         if (dev)
3117                 wdev = dev->ieee80211_ptr;
3118         if (!nl80211_can_set_dev_channel(wdev))
3119                 return -EOPNOTSUPP;
3120         if (wdev)
3121                 iftype = wdev->iftype;
3122
3123         result = nl80211_parse_chandef(rdev, info, &chandef);
3124         if (result)
3125                 return result;
3126
3127         switch (iftype) {
3128         case NL80211_IFTYPE_AP:
3129         case NL80211_IFTYPE_P2P_GO:
3130                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
3131                                                    iftype)) {
3132                         result = -EINVAL;
3133                         break;
3134                 }
3135                 if (wdev->beacon_interval) {
3136                         if (!dev || !rdev->ops->set_ap_chanwidth ||
3137                             !(rdev->wiphy.features &
3138                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
3139                                 result = -EBUSY;
3140                                 break;
3141                         }
3142
3143                         /* Only allow dynamic channel width changes */
3144                         if (chandef.chan != wdev->preset_chandef.chan) {
3145                                 result = -EBUSY;
3146                                 break;
3147                         }
3148                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
3149                         if (result)
3150                                 break;
3151                 }
3152                 wdev->preset_chandef = chandef;
3153                 result = 0;
3154                 break;
3155         case NL80211_IFTYPE_MESH_POINT:
3156                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
3157                 break;
3158         case NL80211_IFTYPE_MONITOR:
3159                 result = cfg80211_set_monitor_channel(rdev, &chandef);
3160                 break;
3161         default:
3162                 result = -EINVAL;
3163         }
3164
3165         return result;
3166 }
3167
3168 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
3169 {
3170         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3171         struct net_device *netdev = info->user_ptr[1];
3172
3173         return __nl80211_set_channel(rdev, netdev, info);
3174 }
3175
3176 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
3177 {
3178         struct cfg80211_registered_device *rdev = NULL;
3179         struct net_device *netdev = NULL;
3180         struct wireless_dev *wdev;
3181         int result = 0, rem_txq_params = 0;
3182         struct nlattr *nl_txq_params;
3183         u32 changed;
3184         u8 retry_short = 0, retry_long = 0;
3185         u32 frag_threshold = 0, rts_threshold = 0;
3186         u8 coverage_class = 0;
3187         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
3188
3189         rtnl_lock();
3190         /*
3191          * Try to find the wiphy and netdev. Normally this
3192          * function shouldn't need the netdev, but this is
3193          * done for backward compatibility -- previously
3194          * setting the channel was done per wiphy, but now
3195          * it is per netdev. Previous userland like hostapd
3196          * also passed a netdev to set_wiphy, so that it is
3197          * possible to let that go to the right netdev!
3198          */
3199
3200         if (info->attrs[NL80211_ATTR_IFINDEX]) {
3201                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
3202
3203                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
3204                 if (netdev && netdev->ieee80211_ptr)
3205                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
3206                 else
3207                         netdev = NULL;
3208         }
3209
3210         if (!netdev) {
3211                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
3212                                                   info->attrs);
3213                 if (IS_ERR(rdev)) {
3214                         rtnl_unlock();
3215                         return PTR_ERR(rdev);
3216                 }
3217                 wdev = NULL;
3218                 netdev = NULL;
3219                 result = 0;
3220         } else
3221                 wdev = netdev->ieee80211_ptr;
3222
3223         wiphy_lock(&rdev->wiphy);
3224
3225         /*
3226          * end workaround code, by now the rdev is available
3227          * and locked, and wdev may or may not be NULL.
3228          */
3229
3230         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
3231                 result = cfg80211_dev_rename(
3232                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
3233         rtnl_unlock();
3234
3235         if (result)
3236                 goto out;
3237
3238         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
3239                 struct ieee80211_txq_params txq_params;
3240                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
3241
3242                 if (!rdev->ops->set_txq_params) {
3243                         result = -EOPNOTSUPP;
3244                         goto out;
3245                 }
3246
3247                 if (!netdev) {
3248                         result = -EINVAL;
3249                         goto out;
3250                 }
3251
3252                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
3253                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
3254                         result = -EINVAL;
3255                         goto out;
3256                 }
3257
3258                 if (!netif_running(netdev)) {
3259                         result = -ENETDOWN;
3260                         goto out;
3261                 }
3262
3263                 nla_for_each_nested(nl_txq_params,
3264                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
3265                                     rem_txq_params) {
3266                         result = nla_parse_nested_deprecated(tb,
3267                                                              NL80211_TXQ_ATTR_MAX,
3268                                                              nl_txq_params,
3269                                                              txq_params_policy,
3270                                                              info->extack);
3271                         if (result)
3272                                 goto out;
3273                         result = parse_txq_params(tb, &txq_params);
3274                         if (result)
3275                                 goto out;
3276
3277                         result = rdev_set_txq_params(rdev, netdev,
3278                                                      &txq_params);
3279                         if (result)
3280                                 goto out;
3281                 }
3282         }
3283
3284         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
3285                 result = __nl80211_set_channel(
3286                         rdev,
3287                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
3288                         info);
3289                 if (result)
3290                         goto out;
3291         }
3292
3293         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
3294                 struct wireless_dev *txp_wdev = wdev;
3295                 enum nl80211_tx_power_setting type;
3296                 int idx, mbm = 0;
3297
3298                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
3299                         txp_wdev = NULL;
3300
3301                 if (!rdev->ops->set_tx_power) {
3302                         result = -EOPNOTSUPP;
3303                         goto out;
3304                 }
3305
3306                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
3307                 type = nla_get_u32(info->attrs[idx]);
3308
3309                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
3310                     (type != NL80211_TX_POWER_AUTOMATIC)) {
3311                         result = -EINVAL;
3312                         goto out;
3313                 }
3314
3315                 if (type != NL80211_TX_POWER_AUTOMATIC) {
3316                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
3317                         mbm = nla_get_u32(info->attrs[idx]);
3318                 }
3319
3320                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
3321                 if (result)
3322                         goto out;
3323         }
3324
3325         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
3326             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
3327                 u32 tx_ant, rx_ant;
3328
3329                 if ((!rdev->wiphy.available_antennas_tx &&
3330                      !rdev->wiphy.available_antennas_rx) ||
3331                     !rdev->ops->set_antenna) {
3332                         result = -EOPNOTSUPP;
3333                         goto out;
3334                 }
3335
3336                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3337                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3338
3339                 /* reject antenna configurations which don't match the
3340                  * available antenna masks, except for the "all" mask */
3341                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3342                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
3343                         result = -EINVAL;
3344                         goto out;
3345                 }
3346
3347                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3348                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3349
3350                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3351                 if (result)
3352                         goto out;
3353         }
3354
3355         changed = 0;
3356
3357         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3358                 retry_short = nla_get_u8(
3359                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3360
3361                 changed |= WIPHY_PARAM_RETRY_SHORT;
3362         }
3363
3364         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3365                 retry_long = nla_get_u8(
3366                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3367
3368                 changed |= WIPHY_PARAM_RETRY_LONG;
3369         }
3370
3371         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3372                 frag_threshold = nla_get_u32(
3373                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3374                 if (frag_threshold < 256) {
3375                         result = -EINVAL;
3376                         goto out;
3377                 }
3378
3379                 if (frag_threshold != (u32) -1) {
3380                         /*
3381                          * Fragments (apart from the last one) are required to
3382                          * have even length. Make the fragmentation code
3383                          * simpler by stripping LSB should someone try to use
3384                          * odd threshold value.
3385                          */
3386                         frag_threshold &= ~0x1;
3387                 }
3388                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3389         }
3390
3391         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3392                 rts_threshold = nla_get_u32(
3393                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3394                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3395         }
3396
3397         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3398                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3399                         result = -EINVAL;
3400                         goto out;
3401                 }
3402
3403                 coverage_class = nla_get_u8(
3404                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3405                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3406         }
3407
3408         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3409                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
3410                         result = -EOPNOTSUPP;
3411                         goto out;
3412                 }
3413
3414                 changed |= WIPHY_PARAM_DYN_ACK;
3415         }
3416
3417         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3418                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3419                                              NL80211_EXT_FEATURE_TXQS)) {
3420                         result = -EOPNOTSUPP;
3421                         goto out;
3422                 }
3423                 txq_limit = nla_get_u32(
3424                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3425                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3426         }
3427
3428         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3429                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3430                                              NL80211_EXT_FEATURE_TXQS)) {
3431                         result = -EOPNOTSUPP;
3432                         goto out;
3433                 }
3434                 txq_memory_limit = nla_get_u32(
3435                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3436                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3437         }
3438
3439         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3440                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3441                                              NL80211_EXT_FEATURE_TXQS)) {
3442                         result = -EOPNOTSUPP;
3443                         goto out;
3444                 }
3445                 txq_quantum = nla_get_u32(
3446                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3447                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3448         }
3449
3450         if (changed) {
3451                 u8 old_retry_short, old_retry_long;
3452                 u32 old_frag_threshold, old_rts_threshold;
3453                 u8 old_coverage_class;
3454                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3455
3456                 if (!rdev->ops->set_wiphy_params) {
3457                         result = -EOPNOTSUPP;
3458                         goto out;
3459                 }
3460
3461                 old_retry_short = rdev->wiphy.retry_short;
3462                 old_retry_long = rdev->wiphy.retry_long;
3463                 old_frag_threshold = rdev->wiphy.frag_threshold;
3464                 old_rts_threshold = rdev->wiphy.rts_threshold;
3465                 old_coverage_class = rdev->wiphy.coverage_class;
3466                 old_txq_limit = rdev->wiphy.txq_limit;
3467                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3468                 old_txq_quantum = rdev->wiphy.txq_quantum;
3469
3470                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3471                         rdev->wiphy.retry_short = retry_short;
3472                 if (changed & WIPHY_PARAM_RETRY_LONG)
3473                         rdev->wiphy.retry_long = retry_long;
3474                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3475                         rdev->wiphy.frag_threshold = frag_threshold;
3476                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3477                         rdev->wiphy.rts_threshold = rts_threshold;
3478                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3479                         rdev->wiphy.coverage_class = coverage_class;
3480                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3481                         rdev->wiphy.txq_limit = txq_limit;
3482                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3483                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3484                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3485                         rdev->wiphy.txq_quantum = txq_quantum;
3486
3487                 result = rdev_set_wiphy_params(rdev, changed);
3488                 if (result) {
3489                         rdev->wiphy.retry_short = old_retry_short;
3490                         rdev->wiphy.retry_long = old_retry_long;
3491                         rdev->wiphy.frag_threshold = old_frag_threshold;
3492                         rdev->wiphy.rts_threshold = old_rts_threshold;
3493                         rdev->wiphy.coverage_class = old_coverage_class;
3494                         rdev->wiphy.txq_limit = old_txq_limit;
3495                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3496                         rdev->wiphy.txq_quantum = old_txq_quantum;
3497                         goto out;
3498                 }
3499         }
3500
3501         result = 0;
3502
3503 out:
3504         wiphy_unlock(&rdev->wiphy);
3505         return result;
3506 }
3507
3508 static int nl80211_send_chandef(struct sk_buff *msg,
3509                                 const struct cfg80211_chan_def *chandef)
3510 {
3511         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3512                 return -EINVAL;
3513
3514         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3515                         chandef->chan->center_freq))
3516                 return -ENOBUFS;
3517         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
3518                         chandef->chan->freq_offset))
3519                 return -ENOBUFS;
3520         switch (chandef->width) {
3521         case NL80211_CHAN_WIDTH_20_NOHT:
3522         case NL80211_CHAN_WIDTH_20:
3523         case NL80211_CHAN_WIDTH_40:
3524                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3525                                 cfg80211_get_chandef_type(chandef)))
3526                         return -ENOBUFS;
3527                 break;
3528         default:
3529                 break;
3530         }
3531         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3532                 return -ENOBUFS;
3533         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3534                 return -ENOBUFS;
3535         if (chandef->center_freq2 &&
3536             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3537                 return -ENOBUFS;
3538         return 0;
3539 }
3540
3541 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3542                               struct cfg80211_registered_device *rdev,
3543                               struct wireless_dev *wdev,
3544                               enum nl80211_commands cmd)
3545 {
3546         struct net_device *dev = wdev->netdev;
3547         void *hdr;
3548
3549         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3550                 cmd != NL80211_CMD_DEL_INTERFACE &&
3551                 cmd != NL80211_CMD_SET_INTERFACE);
3552
3553         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3554         if (!hdr)
3555                 return -1;
3556
3557         if (dev &&
3558             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3559              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3560                 goto nla_put_failure;
3561
3562         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3563             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3564             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3565                               NL80211_ATTR_PAD) ||
3566             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3567             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3568                         rdev->devlist_generation ^
3569                         (cfg80211_rdev_list_generation << 2)) ||
3570             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3571                 goto nla_put_failure;
3572
3573         if (rdev->ops->get_channel) {
3574                 int ret;
3575                 struct cfg80211_chan_def chandef = {};
3576
3577                 ret = rdev_get_channel(rdev, wdev, &chandef);
3578                 if (ret == 0) {
3579                         if (nl80211_send_chandef(msg, &chandef))
3580                                 goto nla_put_failure;
3581                 }
3582         }
3583
3584         if (rdev->ops->get_tx_power) {
3585                 int dbm, ret;
3586
3587                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3588                 if (ret == 0 &&
3589                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3590                                 DBM_TO_MBM(dbm)))
3591                         goto nla_put_failure;
3592         }
3593
3594         wdev_lock(wdev);
3595         switch (wdev->iftype) {
3596         case NL80211_IFTYPE_AP:
3597                 if (wdev->ssid_len &&
3598                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3599                         goto nla_put_failure_locked;
3600                 break;
3601         case NL80211_IFTYPE_STATION:
3602         case NL80211_IFTYPE_P2P_CLIENT:
3603         case NL80211_IFTYPE_ADHOC: {
3604                 const u8 *ssid_ie;
3605                 if (!wdev->current_bss)
3606                         break;
3607                 rcu_read_lock();
3608                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3609                                                WLAN_EID_SSID);
3610                 if (ssid_ie &&
3611                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3612                         goto nla_put_failure_rcu_locked;
3613                 rcu_read_unlock();
3614                 break;
3615                 }
3616         default:
3617                 /* nothing */
3618                 break;
3619         }
3620         wdev_unlock(wdev);
3621
3622         if (rdev->ops->get_txq_stats) {
3623                 struct cfg80211_txq_stats txqstats = {};
3624                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3625
3626                 if (ret == 0 &&
3627                     !nl80211_put_txq_stats(msg, &txqstats,
3628                                            NL80211_ATTR_TXQ_STATS))
3629                         goto nla_put_failure;
3630         }
3631
3632         genlmsg_end(msg, hdr);
3633         return 0;
3634
3635  nla_put_failure_rcu_locked:
3636         rcu_read_unlock();
3637  nla_put_failure_locked:
3638         wdev_unlock(wdev);
3639  nla_put_failure:
3640         genlmsg_cancel(msg, hdr);
3641         return -EMSGSIZE;
3642 }
3643
3644 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3645 {
3646         int wp_idx = 0;
3647         int if_idx = 0;
3648         int wp_start = cb->args[0];
3649         int if_start = cb->args[1];
3650         int filter_wiphy = -1;
3651         struct cfg80211_registered_device *rdev;
3652         struct wireless_dev *wdev;
3653         int ret;
3654
3655         rtnl_lock();
3656         if (!cb->args[2]) {
3657                 struct nl80211_dump_wiphy_state state = {
3658                         .filter_wiphy = -1,
3659                 };
3660
3661                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3662                 if (ret)
3663                         goto out_unlock;
3664
3665                 filter_wiphy = state.filter_wiphy;
3666
3667                 /*
3668                  * if filtering, set cb->args[2] to +1 since 0 is the default
3669                  * value needed to determine that parsing is necessary.
3670                  */
3671                 if (filter_wiphy >= 0)
3672                         cb->args[2] = filter_wiphy + 1;
3673                 else
3674                         cb->args[2] = -1;
3675         } else if (cb->args[2] > 0) {
3676                 filter_wiphy = cb->args[2] - 1;
3677         }
3678
3679         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3680                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3681                         continue;
3682                 if (wp_idx < wp_start) {
3683                         wp_idx++;
3684                         continue;
3685                 }
3686
3687                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3688                         continue;
3689
3690                 if_idx = 0;
3691
3692                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3693                         if (if_idx < if_start) {
3694                                 if_idx++;
3695                                 continue;
3696                         }
3697                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3698                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3699                                                rdev, wdev,
3700                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3701                                 goto out;
3702                         }
3703                         if_idx++;
3704                 }
3705
3706                 wp_idx++;
3707         }
3708  out:
3709         cb->args[0] = wp_idx;
3710         cb->args[1] = if_idx;
3711
3712         ret = skb->len;
3713  out_unlock:
3714         rtnl_unlock();
3715
3716         return ret;
3717 }
3718
3719 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3720 {
3721         struct sk_buff *msg;
3722         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3723         struct wireless_dev *wdev = info->user_ptr[1];
3724
3725         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3726         if (!msg)
3727                 return -ENOMEM;
3728
3729         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3730                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3731                 nlmsg_free(msg);
3732                 return -ENOBUFS;
3733         }
3734
3735         return genlmsg_reply(msg, info);
3736 }
3737
3738 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3739         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3740         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3741         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3742         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3743         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3744         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3745 };
3746
3747 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3748 {
3749         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3750         int flag;
3751
3752         *mntrflags = 0;
3753
3754         if (!nla)
3755                 return -EINVAL;
3756
3757         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3758                 return -EINVAL;
3759
3760         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3761                 if (flags[flag])
3762                         *mntrflags |= (1<<flag);
3763
3764         *mntrflags |= MONITOR_FLAG_CHANGED;
3765
3766         return 0;
3767 }
3768
3769 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3770                                      enum nl80211_iftype type,
3771                                      struct genl_info *info,
3772                                      struct vif_params *params)
3773 {
3774         bool change = false;
3775         int err;
3776
3777         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3778                 if (type != NL80211_IFTYPE_MONITOR)
3779                         return -EINVAL;
3780
3781                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3782                                           &params->flags);
3783                 if (err)
3784                         return err;
3785
3786                 change = true;
3787         }
3788
3789         if (params->flags & MONITOR_FLAG_ACTIVE &&
3790             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3791                 return -EOPNOTSUPP;
3792
3793         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3794                 const u8 *mumimo_groups;
3795                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3796
3797                 if (type != NL80211_IFTYPE_MONITOR)
3798                         return -EINVAL;
3799
3800                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3801                         return -EOPNOTSUPP;
3802
3803                 mumimo_groups =
3804                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3805
3806                 /* bits 0 and 63 are reserved and must be zero */
3807                 if ((mumimo_groups[0] & BIT(0)) ||
3808                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3809                         return -EINVAL;
3810
3811                 params->vht_mumimo_groups = mumimo_groups;
3812                 change = true;
3813         }
3814
3815         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3816                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3817
3818                 if (type != NL80211_IFTYPE_MONITOR)
3819                         return -EINVAL;
3820
3821                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3822                         return -EOPNOTSUPP;
3823
3824                 params->vht_mumimo_follow_addr =
3825                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3826                 change = true;
3827         }
3828
3829         return change ? 1 : 0;
3830 }
3831
3832 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3833                                struct net_device *netdev, u8 use_4addr,
3834                                enum nl80211_iftype iftype)
3835 {
3836         if (!use_4addr) {
3837                 if (netdev && netif_is_bridge_port(netdev))
3838                         return -EBUSY;
3839                 return 0;
3840         }
3841
3842         switch (iftype) {
3843         case NL80211_IFTYPE_AP_VLAN:
3844                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3845                         return 0;
3846                 break;
3847         case NL80211_IFTYPE_STATION:
3848                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3849                         return 0;
3850                 break;
3851         default:
3852                 break;
3853         }
3854
3855         return -EOPNOTSUPP;
3856 }
3857
3858 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3859 {
3860         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3861         struct vif_params params;
3862         int err;
3863         enum nl80211_iftype otype, ntype;
3864         struct net_device *dev = info->user_ptr[1];
3865         bool change = false;
3866
3867         memset(&params, 0, sizeof(params));
3868
3869         otype = ntype = dev->ieee80211_ptr->iftype;
3870
3871         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3872                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3873                 if (otype != ntype)
3874                         change = true;
3875         }
3876
3877         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3878                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3879
3880                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3881                         return -EINVAL;
3882                 if (netif_running(dev))
3883                         return -EBUSY;
3884
3885                 wdev_lock(wdev);
3886                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3887                              IEEE80211_MAX_MESH_ID_LEN);
3888                 wdev->mesh_id_up_len =
3889                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3890                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3891                        wdev->mesh_id_up_len);
3892                 wdev_unlock(wdev);
3893         }
3894
3895         if (info->attrs[NL80211_ATTR_4ADDR]) {
3896                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3897                 change = true;
3898                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3899                 if (err)
3900                         return err;
3901         } else {
3902                 params.use_4addr = -1;
3903         }
3904
3905         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3906         if (err < 0)
3907                 return err;
3908         if (err > 0)
3909                 change = true;
3910
3911         if (change)
3912                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3913         else
3914                 err = 0;
3915
3916         if (!err && params.use_4addr != -1)
3917                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3918
3919         if (change && !err) {
3920                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3921
3922                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3923         }
3924
3925         return err;
3926 }
3927
3928 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3929 {
3930         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3931         struct vif_params params;
3932         struct wireless_dev *wdev;
3933         struct sk_buff *msg;
3934         int err;
3935         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3936
3937         /* to avoid failing a new interface creation due to pending removal */
3938         cfg80211_destroy_ifaces(rdev);
3939
3940         memset(&params, 0, sizeof(params));
3941
3942         if (!info->attrs[NL80211_ATTR_IFNAME])
3943                 return -EINVAL;
3944
3945         if (info->attrs[NL80211_ATTR_IFTYPE])
3946                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3947
3948         if (!rdev->ops->add_virtual_intf)
3949                 return -EOPNOTSUPP;
3950
3951         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3952              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3953             info->attrs[NL80211_ATTR_MAC]) {
3954                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3955                            ETH_ALEN);
3956                 if (!is_valid_ether_addr(params.macaddr))
3957                         return -EADDRNOTAVAIL;
3958         }
3959
3960         if (info->attrs[NL80211_ATTR_4ADDR]) {
3961                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3962                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3963                 if (err)
3964                         return err;
3965         }
3966
3967         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3968                 return -EOPNOTSUPP;
3969
3970         err = nl80211_parse_mon_options(rdev, type, info, &params);
3971         if (err < 0)
3972                 return err;
3973
3974         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3975         if (!msg)
3976                 return -ENOMEM;
3977
3978         wdev = rdev_add_virtual_intf(rdev,
3979                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3980                                 NET_NAME_USER, type, &params);
3981         if (WARN_ON(!wdev)) {
3982                 nlmsg_free(msg);
3983                 return -EPROTO;
3984         } else if (IS_ERR(wdev)) {
3985                 nlmsg_free(msg);
3986                 return PTR_ERR(wdev);
3987         }
3988
3989         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3990                 wdev->owner_nlportid = info->snd_portid;
3991
3992         switch (type) {
3993         case NL80211_IFTYPE_MESH_POINT:
3994                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3995                         break;
3996                 wdev_lock(wdev);
3997                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3998                              IEEE80211_MAX_MESH_ID_LEN);
3999                 wdev->mesh_id_up_len =
4000                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
4001                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
4002                        wdev->mesh_id_up_len);
4003                 wdev_unlock(wdev);
4004                 break;
4005         case NL80211_IFTYPE_NAN:
4006         case NL80211_IFTYPE_P2P_DEVICE:
4007                 /*
4008                  * P2P Device and NAN do not have a netdev, so don't go
4009                  * through the netdev notifier and must be added here
4010                  */
4011                 cfg80211_init_wdev(wdev);
4012                 cfg80211_register_wdev(rdev, wdev);
4013                 break;
4014         default:
4015                 break;
4016         }
4017
4018         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
4019                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
4020                 nlmsg_free(msg);
4021                 return -ENOBUFS;
4022         }
4023
4024         return genlmsg_reply(msg, info);
4025 }
4026
4027 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
4028 {
4029         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4030         struct wireless_dev *wdev = info->user_ptr[1];
4031
4032         if (!rdev->ops->del_virtual_intf)
4033                 return -EOPNOTSUPP;
4034
4035         /*
4036          * We hold RTNL, so this is safe, without RTNL opencount cannot
4037          * reach 0, and thus the rdev cannot be deleted.
4038          *
4039          * We need to do it for the dev_close(), since that will call
4040          * the netdev notifiers, and we need to acquire the mutex there
4041          * but don't know if we get there from here or from some other
4042          * place (e.g. "ip link set ... down").
4043          */
4044         mutex_unlock(&rdev->wiphy.mtx);
4045
4046         /*
4047          * If we remove a wireless device without a netdev then clear
4048          * user_ptr[1] so that nl80211_post_doit won't dereference it
4049          * to check if it needs to do dev_put(). Otherwise it crashes
4050          * since the wdev has been freed, unlike with a netdev where
4051          * we need the dev_put() for the netdev to really be freed.
4052          */
4053         if (!wdev->netdev)
4054                 info->user_ptr[1] = NULL;
4055         else
4056                 dev_close(wdev->netdev);
4057
4058         mutex_lock(&rdev->wiphy.mtx);
4059
4060         return rdev_del_virtual_intf(rdev, wdev);
4061 }
4062
4063 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
4064 {
4065         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4066         struct net_device *dev = info->user_ptr[1];
4067         u16 noack_map;
4068
4069         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
4070                 return -EINVAL;
4071
4072         if (!rdev->ops->set_noack_map)
4073                 return -EOPNOTSUPP;
4074
4075         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
4076
4077         return rdev_set_noack_map(rdev, dev, noack_map);
4078 }
4079
4080 struct get_key_cookie {
4081         struct sk_buff *msg;
4082         int error;
4083         int idx;
4084 };
4085
4086 static void get_key_callback(void *c, struct key_params *params)
4087 {
4088         struct nlattr *key;
4089         struct get_key_cookie *cookie = c;
4090
4091         if ((params->key &&
4092              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
4093                      params->key_len, params->key)) ||
4094             (params->seq &&
4095              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
4096                      params->seq_len, params->seq)) ||
4097             (params->cipher &&
4098              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
4099                          params->cipher)))
4100                 goto nla_put_failure;
4101
4102         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
4103         if (!key)
4104                 goto nla_put_failure;
4105
4106         if ((params->key &&
4107              nla_put(cookie->msg, NL80211_KEY_DATA,
4108                      params->key_len, params->key)) ||
4109             (params->seq &&
4110              nla_put(cookie->msg, NL80211_KEY_SEQ,
4111                      params->seq_len, params->seq)) ||
4112             (params->cipher &&
4113              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
4114                          params->cipher)))
4115                 goto nla_put_failure;
4116
4117         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
4118                 goto nla_put_failure;
4119
4120         nla_nest_end(cookie->msg, key);
4121
4122         return;
4123  nla_put_failure:
4124         cookie->error = 1;
4125 }
4126
4127 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
4128 {
4129         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4130         int err;
4131         struct net_device *dev = info->user_ptr[1];
4132         u8 key_idx = 0;
4133         const u8 *mac_addr = NULL;
4134         bool pairwise;
4135         struct get_key_cookie cookie = {
4136                 .error = 0,
4137         };
4138         void *hdr;
4139         struct sk_buff *msg;
4140         bool bigtk_support = false;
4141
4142         if (wiphy_ext_feature_isset(&rdev->wiphy,
4143                                     NL80211_EXT_FEATURE_BEACON_PROTECTION))
4144                 bigtk_support = true;
4145
4146         if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION ||
4147              dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) &&
4148             wiphy_ext_feature_isset(&rdev->wiphy,
4149                                     NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT))
4150                 bigtk_support = true;
4151
4152         if (info->attrs[NL80211_ATTR_KEY_IDX]) {
4153                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
4154
4155                 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) {
4156                         GENL_SET_ERR_MSG(info, "BIGTK not supported");
4157                         return -EINVAL;
4158                 }
4159         }
4160
4161         if (info->attrs[NL80211_ATTR_MAC])
4162                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4163
4164         pairwise = !!mac_addr;
4165         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
4166                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
4167
4168                 if (kt != NL80211_KEYTYPE_GROUP &&
4169                     kt != NL80211_KEYTYPE_PAIRWISE)
4170                         return -EINVAL;
4171                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
4172         }
4173
4174         if (!rdev->ops->get_key)
4175                 return -EOPNOTSUPP;
4176
4177         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4178                 return -ENOENT;
4179
4180         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
4181         if (!msg)
4182                 return -ENOMEM;
4183
4184         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
4185                              NL80211_CMD_NEW_KEY);
4186         if (!hdr)
4187                 goto nla_put_failure;
4188
4189         cookie.msg = msg;
4190         cookie.idx = key_idx;
4191
4192         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
4193             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
4194                 goto nla_put_failure;
4195         if (mac_addr &&
4196             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
4197                 goto nla_put_failure;
4198
4199         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
4200                            get_key_callback);
4201
4202         if (err)
4203                 goto free_msg;
4204
4205         if (cookie.error)
4206                 goto nla_put_failure;
4207
4208         genlmsg_end(msg, hdr);
4209         return genlmsg_reply(msg, info);
4210
4211  nla_put_failure:
4212         err = -ENOBUFS;
4213  free_msg:
4214         nlmsg_free(msg);
4215         return err;
4216 }
4217
4218 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
4219 {
4220         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4221         struct key_parse key;
4222         int err;
4223         struct net_device *dev = info->user_ptr[1];
4224
4225         err = nl80211_parse_key(info, &key);
4226         if (err)
4227                 return err;
4228
4229         if (key.idx < 0)
4230                 return -EINVAL;
4231
4232         /* Only support setting default key and
4233          * Extended Key ID action NL80211_KEY_SET_TX.
4234          */
4235         if (!key.def && !key.defmgmt && !key.defbeacon &&
4236             !(key.p.mode == NL80211_KEY_SET_TX))
4237                 return -EINVAL;
4238
4239         wdev_lock(dev->ieee80211_ptr);
4240
4241         if (key.def) {
4242                 if (!rdev->ops->set_default_key) {
4243                         err = -EOPNOTSUPP;
4244                         goto out;
4245                 }
4246
4247                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4248                 if (err)
4249                         goto out;
4250
4251                 err = rdev_set_default_key(rdev, dev, key.idx,
4252                                                  key.def_uni, key.def_multi);
4253
4254                 if (err)
4255                         goto out;
4256
4257 #ifdef CONFIG_CFG80211_WEXT
4258                 dev->ieee80211_ptr->wext.default_key = key.idx;
4259 #endif
4260         } else if (key.defmgmt) {
4261                 if (key.def_uni || !key.def_multi) {
4262                         err = -EINVAL;
4263                         goto out;
4264                 }
4265
4266                 if (!rdev->ops->set_default_mgmt_key) {
4267                         err = -EOPNOTSUPP;
4268                         goto out;
4269                 }
4270
4271                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4272                 if (err)
4273                         goto out;
4274
4275                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
4276                 if (err)
4277                         goto out;
4278
4279 #ifdef CONFIG_CFG80211_WEXT
4280                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
4281 #endif
4282         } else if (key.defbeacon) {
4283                 if (key.def_uni || !key.def_multi) {
4284                         err = -EINVAL;
4285                         goto out;
4286                 }
4287
4288                 if (!rdev->ops->set_default_beacon_key) {
4289                         err = -EOPNOTSUPP;
4290                         goto out;
4291                 }
4292
4293                 err = nl80211_key_allowed(dev->ieee80211_ptr);
4294                 if (err)
4295                         goto out;
4296
4297                 err = rdev_set_default_beacon_key(rdev, dev, key.idx);
4298                 if (err)
4299                         goto out;
4300         } else if (key.p.mode == NL80211_KEY_SET_TX &&
4301                    wiphy_ext_feature_isset(&rdev->wiphy,
4302                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
4303                 u8 *mac_addr = NULL;
4304
4305                 if (info->attrs[NL80211_ATTR_MAC])
4306                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4307
4308                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
4309                         err = -EINVAL;
4310                         goto out;
4311                 }
4312
4313                 err = rdev_add_key(rdev, dev, key.idx,
4314                                    NL80211_KEYTYPE_PAIRWISE,
4315                                    mac_addr, &key.p);
4316         } else {
4317                 err = -EINVAL;
4318         }
4319  out:
4320         wdev_unlock(dev->ieee80211_ptr);
4321
4322         return err;
4323 }
4324
4325 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
4326 {
4327         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4328         int err;
4329         struct net_device *dev = info->user_ptr[1];
4330         struct key_parse key;
4331         const u8 *mac_addr = NULL;
4332
4333         err = nl80211_parse_key(info, &key);
4334         if (err)
4335                 return err;
4336
4337         if (!key.p.key) {
4338                 GENL_SET_ERR_MSG(info, "no key");
4339                 return -EINVAL;
4340         }
4341
4342         if (info->attrs[NL80211_ATTR_MAC])
4343                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4344
4345         if (key.type == -1) {
4346                 if (mac_addr)
4347                         key.type = NL80211_KEYTYPE_PAIRWISE;
4348                 else
4349                         key.type = NL80211_KEYTYPE_GROUP;
4350         }
4351
4352         /* for now */
4353         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4354             key.type != NL80211_KEYTYPE_GROUP) {
4355                 GENL_SET_ERR_MSG(info, "key type not pairwise or group");
4356                 return -EINVAL;
4357         }
4358
4359         if (key.type == NL80211_KEYTYPE_GROUP &&
4360             info->attrs[NL80211_ATTR_VLAN_ID])
4361                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
4362
4363         if (!rdev->ops->add_key)
4364                 return -EOPNOTSUPP;
4365
4366         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
4367                                            key.type == NL80211_KEYTYPE_PAIRWISE,
4368                                            mac_addr)) {
4369                 GENL_SET_ERR_MSG(info, "key setting validation failed");
4370                 return -EINVAL;
4371         }
4372
4373         wdev_lock(dev->ieee80211_ptr);
4374         err = nl80211_key_allowed(dev->ieee80211_ptr);
4375         if (err)
4376                 GENL_SET_ERR_MSG(info, "key not allowed");
4377         if (!err) {
4378                 err = rdev_add_key(rdev, dev, key.idx,
4379                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4380                                     mac_addr, &key.p);
4381                 if (err)
4382                         GENL_SET_ERR_MSG(info, "key addition failed");
4383         }
4384         wdev_unlock(dev->ieee80211_ptr);
4385
4386         return err;
4387 }
4388
4389 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
4390 {
4391         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4392         int err;
4393         struct net_device *dev = info->user_ptr[1];
4394         u8 *mac_addr = NULL;
4395         struct key_parse key;
4396
4397         err = nl80211_parse_key(info, &key);
4398         if (err)
4399                 return err;
4400
4401         if (info->attrs[NL80211_ATTR_MAC])
4402                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
4403
4404         if (key.type == -1) {
4405                 if (mac_addr)
4406                         key.type = NL80211_KEYTYPE_PAIRWISE;
4407                 else
4408                         key.type = NL80211_KEYTYPE_GROUP;
4409         }
4410
4411         /* for now */
4412         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
4413             key.type != NL80211_KEYTYPE_GROUP)
4414                 return -EINVAL;
4415
4416         if (!cfg80211_valid_key_idx(rdev, key.idx,
4417                                     key.type == NL80211_KEYTYPE_PAIRWISE))
4418                 return -EINVAL;
4419
4420         if (!rdev->ops->del_key)
4421                 return -EOPNOTSUPP;
4422
4423         wdev_lock(dev->ieee80211_ptr);
4424         err = nl80211_key_allowed(dev->ieee80211_ptr);
4425
4426         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4427             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4428                 err = -ENOENT;
4429
4430         if (!err)
4431                 err = rdev_del_key(rdev, dev, key.idx,
4432                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4433                                    mac_addr);
4434
4435 #ifdef CONFIG_CFG80211_WEXT
4436         if (!err) {
4437                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4438                         dev->ieee80211_ptr->wext.default_key = -1;
4439                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4440                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4441         }
4442 #endif
4443         wdev_unlock(dev->ieee80211_ptr);
4444
4445         return err;
4446 }
4447
4448 /* This function returns an error or the number of nested attributes */
4449 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4450 {
4451         struct nlattr *attr;
4452         int n_entries = 0, tmp;
4453
4454         nla_for_each_nested(attr, nl_attr, tmp) {
4455                 if (nla_len(attr) != ETH_ALEN)
4456                         return -EINVAL;
4457
4458                 n_entries++;
4459         }
4460
4461         return n_entries;
4462 }
4463
4464 /*
4465  * This function parses ACL information and allocates memory for ACL data.
4466  * On successful return, the calling function is responsible to free the
4467  * ACL buffer returned by this function.
4468  */
4469 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4470                                                 struct genl_info *info)
4471 {
4472         enum nl80211_acl_policy acl_policy;
4473         struct nlattr *attr;
4474         struct cfg80211_acl_data *acl;
4475         int i = 0, n_entries, tmp;
4476
4477         if (!wiphy->max_acl_mac_addrs)
4478                 return ERR_PTR(-EOPNOTSUPP);
4479
4480         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4481                 return ERR_PTR(-EINVAL);
4482
4483         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4484         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4485             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4486                 return ERR_PTR(-EINVAL);
4487
4488         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4489                 return ERR_PTR(-EINVAL);
4490
4491         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4492         if (n_entries < 0)
4493                 return ERR_PTR(n_entries);
4494
4495         if (n_entries > wiphy->max_acl_mac_addrs)
4496                 return ERR_PTR(-ENOTSUPP);
4497
4498         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4499         if (!acl)
4500                 return ERR_PTR(-ENOMEM);
4501
4502         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4503                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4504                 i++;
4505         }
4506
4507         acl->n_acl_entries = n_entries;
4508         acl->acl_policy = acl_policy;
4509
4510         return acl;
4511 }
4512
4513 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4514 {
4515         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4516         struct net_device *dev = info->user_ptr[1];
4517         struct cfg80211_acl_data *acl;
4518         int err;
4519
4520         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4521             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4522                 return -EOPNOTSUPP;
4523
4524         if (!dev->ieee80211_ptr->beacon_interval)
4525                 return -EINVAL;
4526
4527         acl = parse_acl_data(&rdev->wiphy, info);
4528         if (IS_ERR(acl))
4529                 return PTR_ERR(acl);
4530
4531         err = rdev_set_mac_acl(rdev, dev, acl);
4532
4533         kfree(acl);
4534
4535         return err;
4536 }
4537
4538 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4539                            u8 *rates, u8 rates_len)
4540 {
4541         u8 i;
4542         u32 mask = 0;
4543
4544         for (i = 0; i < rates_len; i++) {
4545                 int rate = (rates[i] & 0x7f) * 5;
4546                 int ridx;
4547
4548                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4549                         struct ieee80211_rate *srate =
4550                                 &sband->bitrates[ridx];
4551                         if (rate == srate->bitrate) {
4552                                 mask |= 1 << ridx;
4553                                 break;
4554                         }
4555                 }
4556                 if (ridx == sband->n_bitrates)
4557                         return 0; /* rate not found */
4558         }
4559
4560         return mask;
4561 }
4562
4563 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4564                                u8 *rates, u8 rates_len,
4565                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4566 {
4567         u8 i;
4568
4569         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4570
4571         for (i = 0; i < rates_len; i++) {
4572                 int ridx, rbit;
4573
4574                 ridx = rates[i] / 8;
4575                 rbit = BIT(rates[i] % 8);
4576
4577                 /* check validity */
4578                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4579                         return false;
4580
4581                 /* check availability */
4582                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4583                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4584                         mcs[ridx] |= rbit;
4585                 else
4586                         return false;
4587         }
4588
4589         return true;
4590 }
4591
4592 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4593 {
4594         u16 mcs_mask = 0;
4595
4596         switch (vht_mcs_map) {
4597         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4598                 break;
4599         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4600                 mcs_mask = 0x00FF;
4601                 break;
4602         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4603                 mcs_mask = 0x01FF;
4604                 break;
4605         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4606                 mcs_mask = 0x03FF;
4607                 break;
4608         default:
4609                 break;
4610         }
4611
4612         return mcs_mask;
4613 }
4614
4615 static void vht_build_mcs_mask(u16 vht_mcs_map,
4616                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4617 {
4618         u8 nss;
4619
4620         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4621                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4622                 vht_mcs_map >>= 2;
4623         }
4624 }
4625
4626 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4627                              struct nl80211_txrate_vht *txrate,
4628                              u16 mcs[NL80211_VHT_NSS_MAX])
4629 {
4630         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4631         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4632         u8 i;
4633
4634         if (!sband->vht_cap.vht_supported)
4635                 return false;
4636
4637         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4638
4639         /* Build vht_mcs_mask from VHT capabilities */
4640         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4641
4642         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4643                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4644                         mcs[i] = txrate->mcs[i];
4645                 else
4646                         return false;
4647         }
4648
4649         return true;
4650 }
4651
4652 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map)
4653 {
4654         switch (he_mcs_map) {
4655         case IEEE80211_HE_MCS_NOT_SUPPORTED:
4656                 return 0;
4657         case IEEE80211_HE_MCS_SUPPORT_0_7:
4658                 return 0x00FF;
4659         case IEEE80211_HE_MCS_SUPPORT_0_9:
4660                 return 0x03FF;
4661         case IEEE80211_HE_MCS_SUPPORT_0_11:
4662                 return 0xFFF;
4663         default:
4664                 break;
4665         }
4666         return 0;
4667 }
4668
4669 static void he_build_mcs_mask(u16 he_mcs_map,
4670                               u16 he_mcs_mask[NL80211_HE_NSS_MAX])
4671 {
4672         u8 nss;
4673
4674         for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
4675                 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03);
4676                 he_mcs_map >>= 2;
4677         }
4678 }
4679
4680 static u16 he_get_txmcsmap(struct genl_info *info,
4681                            const struct ieee80211_sta_he_cap *he_cap)
4682 {
4683         struct net_device *dev = info->user_ptr[1];
4684         struct wireless_dev *wdev = dev->ieee80211_ptr;
4685         __le16  tx_mcs;
4686
4687         switch (wdev->chandef.width) {
4688         case NL80211_CHAN_WIDTH_80P80:
4689                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80;
4690                 break;
4691         case NL80211_CHAN_WIDTH_160:
4692                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160;
4693                 break;
4694         default:
4695                 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80;
4696                 break;
4697         }
4698         return le16_to_cpu(tx_mcs);
4699 }
4700
4701 static bool he_set_mcs_mask(struct genl_info *info,
4702                             struct wireless_dev *wdev,
4703                             struct ieee80211_supported_band *sband,
4704                             struct nl80211_txrate_he *txrate,
4705                             u16 mcs[NL80211_HE_NSS_MAX])
4706 {
4707         const struct ieee80211_sta_he_cap *he_cap;
4708         u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {};
4709         u16 tx_mcs_map = 0;
4710         u8 i;
4711
4712         he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4713         if (!he_cap)
4714                 return false;
4715
4716         memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX);
4717
4718         tx_mcs_map = he_get_txmcsmap(info, he_cap);
4719
4720         /* Build he_mcs_mask from HE capabilities */
4721         he_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4722
4723         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4724                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4725                         mcs[i] = txrate->mcs[i];
4726                 else
4727                         return false;
4728         }
4729
4730         return true;
4731 }
4732
4733 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4734                                          struct nlattr *attrs[],
4735                                          enum nl80211_attrs attr,
4736                                          struct cfg80211_bitrate_mask *mask,
4737                                          struct net_device *dev,
4738                                          bool default_all_enabled)
4739 {
4740         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4741         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4742         struct wireless_dev *wdev = dev->ieee80211_ptr;
4743         int rem, i;
4744         struct nlattr *tx_rates;
4745         struct ieee80211_supported_band *sband;
4746         u16 vht_tx_mcs_map, he_tx_mcs_map;
4747
4748         memset(mask, 0, sizeof(*mask));
4749         /* Default to all rates enabled */
4750         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4751                 const struct ieee80211_sta_he_cap *he_cap;
4752
4753                 if (!default_all_enabled)
4754                         break;
4755
4756                 sband = rdev->wiphy.bands[i];
4757
4758                 if (!sband)
4759                         continue;
4760
4761                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4762                 memcpy(mask->control[i].ht_mcs,
4763                        sband->ht_cap.mcs.rx_mask,
4764                        sizeof(mask->control[i].ht_mcs));
4765
4766                 if (!sband->vht_cap.vht_supported)
4767                         continue;
4768
4769                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4770                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4771
4772                 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype);
4773                 if (!he_cap)
4774                         continue;
4775
4776                 he_tx_mcs_map = he_get_txmcsmap(info, he_cap);
4777                 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs);
4778
4779                 mask->control[i].he_gi = 0xFF;
4780                 mask->control[i].he_ltf = 0xFF;
4781         }
4782
4783         /* if no rates are given set it back to the defaults */
4784         if (!attrs[attr])
4785                 goto out;
4786
4787         /* The nested attribute uses enum nl80211_band as the index. This maps
4788          * directly to the enum nl80211_band values used in cfg80211.
4789          */
4790         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4791         nla_for_each_nested(tx_rates, attrs[attr], rem) {
4792                 enum nl80211_band band = nla_type(tx_rates);
4793                 int err;
4794
4795                 if (band < 0 || band >= NUM_NL80211_BANDS)
4796                         return -EINVAL;
4797                 sband = rdev->wiphy.bands[band];
4798                 if (sband == NULL)
4799                         return -EINVAL;
4800                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4801                                                   tx_rates,
4802                                                   nl80211_txattr_policy,
4803                                                   info->extack);
4804                 if (err)
4805                         return err;
4806                 if (tb[NL80211_TXRATE_LEGACY]) {
4807                         mask->control[band].legacy = rateset_to_mask(
4808                                 sband,
4809                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4810                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4811                         if ((mask->control[band].legacy == 0) &&
4812                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4813                                 return -EINVAL;
4814                 }
4815                 if (tb[NL80211_TXRATE_HT]) {
4816                         if (!ht_rateset_to_mask(
4817                                         sband,
4818                                         nla_data(tb[NL80211_TXRATE_HT]),
4819                                         nla_len(tb[NL80211_TXRATE_HT]),
4820                                         mask->control[band].ht_mcs))
4821                                 return -EINVAL;
4822                 }
4823
4824                 if (tb[NL80211_TXRATE_VHT]) {
4825                         if (!vht_set_mcs_mask(
4826                                         sband,
4827                                         nla_data(tb[NL80211_TXRATE_VHT]),
4828                                         mask->control[band].vht_mcs))
4829                                 return -EINVAL;
4830                 }
4831
4832                 if (tb[NL80211_TXRATE_GI]) {
4833                         mask->control[band].gi =
4834                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4835                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4836                                 return -EINVAL;
4837                 }
4838                 if (tb[NL80211_TXRATE_HE] &&
4839                     !he_set_mcs_mask(info, wdev, sband,
4840                                      nla_data(tb[NL80211_TXRATE_HE]),
4841                                      mask->control[band].he_mcs))
4842                         return -EINVAL;
4843
4844                 if (tb[NL80211_TXRATE_HE_GI])
4845                         mask->control[band].he_gi =
4846                                 nla_get_u8(tb[NL80211_TXRATE_HE_GI]);
4847                 if (tb[NL80211_TXRATE_HE_LTF])
4848                         mask->control[band].he_ltf =
4849                                 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]);
4850
4851                 if (mask->control[band].legacy == 0) {
4852                         /* don't allow empty legacy rates if HT, VHT or HE
4853                          * are not even supported.
4854                          */
4855                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4856                               rdev->wiphy.bands[band]->vht_cap.vht_supported ||
4857                               ieee80211_get_he_iftype_cap(sband, wdev->iftype)))
4858                                 return -EINVAL;
4859
4860                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4861                                 if (mask->control[band].ht_mcs[i])
4862                                         goto out;
4863
4864                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4865                                 if (mask->control[band].vht_mcs[i])
4866                                         goto out;
4867
4868                         for (i = 0; i < NL80211_HE_NSS_MAX; i++)
4869                                 if (mask->control[band].he_mcs[i])
4870                                         goto out;
4871
4872                         /* legacy and mcs rates may not be both empty */
4873                         return -EINVAL;
4874                 }
4875         }
4876
4877 out:
4878         return 0;
4879 }
4880
4881 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4882                                    enum nl80211_band band,
4883                                    struct cfg80211_bitrate_mask *beacon_rate)
4884 {
4885         u32 count_ht, count_vht, count_he, i;
4886         u32 rate = beacon_rate->control[band].legacy;
4887
4888         /* Allow only one rate */
4889         if (hweight32(rate) > 1)
4890                 return -EINVAL;
4891
4892         count_ht = 0;
4893         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4894                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4895                         return -EINVAL;
4896                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4897                         count_ht++;
4898                         if (count_ht > 1)
4899                                 return -EINVAL;
4900                 }
4901                 if (count_ht && rate)
4902                         return -EINVAL;
4903         }
4904
4905         count_vht = 0;
4906         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4907                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4908                         return -EINVAL;
4909                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4910                         count_vht++;
4911                         if (count_vht > 1)
4912                                 return -EINVAL;
4913                 }
4914                 if (count_vht && rate)
4915                         return -EINVAL;
4916         }
4917
4918         count_he = 0;
4919         for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
4920                 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) {
4921                         return -EINVAL;
4922                 } else if (beacon_rate->control[band].he_mcs[i]) {
4923                         count_he++;
4924                         if (count_he > 1)
4925                                 return -EINVAL;
4926                 }
4927                 if (count_he && rate)
4928                         return -EINVAL;
4929         }
4930
4931         if ((count_ht && count_vht && count_he) ||
4932             (!rate && !count_ht && !count_vht && !count_he))
4933                 return -EINVAL;
4934
4935         if (rate &&
4936             !wiphy_ext_feature_isset(&rdev->wiphy,
4937                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4938                 return -EINVAL;
4939         if (count_ht &&
4940             !wiphy_ext_feature_isset(&rdev->wiphy,
4941                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4942                 return -EINVAL;
4943         if (count_vht &&
4944             !wiphy_ext_feature_isset(&rdev->wiphy,
4945                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4946                 return -EINVAL;
4947         if (count_he &&
4948             !wiphy_ext_feature_isset(&rdev->wiphy,
4949                                      NL80211_EXT_FEATURE_BEACON_RATE_HE))
4950                 return -EINVAL;
4951
4952         return 0;
4953 }
4954
4955 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4956                                 struct nlattr *attrs[],
4957                                 struct cfg80211_beacon_data *bcn)
4958 {
4959         bool haveinfo = false;
4960         int err;
4961
4962         memset(bcn, 0, sizeof(*bcn));
4963
4964         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4965                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4966                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4967                 if (!bcn->head_len)
4968                         return -EINVAL;
4969                 haveinfo = true;
4970         }
4971
4972         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4973                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4974                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4975                 haveinfo = true;
4976         }
4977
4978         if (!haveinfo)
4979                 return -EINVAL;
4980
4981         if (attrs[NL80211_ATTR_IE]) {
4982                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4983                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4984         }
4985
4986         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4987                 bcn->proberesp_ies =
4988                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4989                 bcn->proberesp_ies_len =
4990                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4991         }
4992
4993         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4994                 bcn->assocresp_ies =
4995                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4996                 bcn->assocresp_ies_len =
4997                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4998         }
4999
5000         if (attrs[NL80211_ATTR_PROBE_RESP]) {
5001                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
5002                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
5003         }
5004
5005         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
5006                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
5007
5008                 err = nla_parse_nested_deprecated(tb,
5009                                                   NL80211_FTM_RESP_ATTR_MAX,
5010                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
5011                                                   NULL, NULL);
5012                 if (err)
5013                         return err;
5014
5015                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
5016                     wiphy_ext_feature_isset(&rdev->wiphy,
5017                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
5018                         bcn->ftm_responder = 1;
5019                 else
5020                         return -EOPNOTSUPP;
5021
5022                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
5023                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
5024                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
5025                 }
5026
5027                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
5028                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5029                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
5030                 }
5031         } else {
5032                 bcn->ftm_responder = -1;
5033         }
5034
5035         return 0;
5036 }
5037
5038 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
5039                                     struct ieee80211_he_obss_pd *he_obss_pd)
5040 {
5041         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
5042         int err;
5043
5044         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
5045                                he_obss_pd_policy, NULL);
5046         if (err)
5047                 return err;
5048
5049         if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL])
5050                 return -EINVAL;
5051
5052         he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]);
5053
5054         if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET])
5055                 he_obss_pd->min_offset =
5056                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
5057         if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
5058                 he_obss_pd->max_offset =
5059                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
5060         if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET])
5061                 he_obss_pd->non_srg_max_offset =
5062                         nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]);
5063
5064         if (he_obss_pd->min_offset > he_obss_pd->max_offset)
5065                 return -EINVAL;
5066
5067         if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP])
5068                 memcpy(he_obss_pd->bss_color_bitmap,
5069                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]),
5070                        sizeof(he_obss_pd->bss_color_bitmap));
5071
5072         if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP])
5073                 memcpy(he_obss_pd->partial_bssid_bitmap,
5074                        nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]),
5075                        sizeof(he_obss_pd->partial_bssid_bitmap));
5076
5077         he_obss_pd->enable = true;
5078
5079         return 0;
5080 }
5081
5082 static int nl80211_parse_he_bss_color(struct nlattr *attrs,
5083                                       struct cfg80211_he_bss_color *he_bss_color)
5084 {
5085         struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1];
5086         int err;
5087
5088         err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs,
5089                                he_bss_color_policy, NULL);
5090         if (err)
5091                 return err;
5092
5093         if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR])
5094                 return -EINVAL;
5095
5096         he_bss_color->color =
5097                 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]);
5098         he_bss_color->enabled =
5099                 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]);
5100         he_bss_color->partial =
5101                 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]);
5102
5103         return 0;
5104 }
5105
5106 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev,
5107                                         struct nlattr *attrs,
5108                                         struct cfg80211_ap_settings *params)
5109 {
5110         struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1];
5111         int ret;
5112         struct cfg80211_fils_discovery *fd = &params->fils_discovery;
5113
5114         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5115                                      NL80211_EXT_FEATURE_FILS_DISCOVERY))
5116                 return -EINVAL;
5117
5118         ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs,
5119                                NULL, NULL);
5120         if (ret)
5121                 return ret;
5122
5123         if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] ||
5124             !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] ||
5125             !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL])
5126                 return -EINVAL;
5127
5128         fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5129         fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]);
5130         fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]);
5131         fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]);
5132
5133         return 0;
5134 }
5135
5136 static int
5137 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev,
5138                                      struct nlattr *attrs,
5139                                      struct cfg80211_ap_settings *params)
5140 {
5141         struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1];
5142         int ret;
5143         struct cfg80211_unsol_bcast_probe_resp *presp =
5144                                         &params->unsol_bcast_probe_resp;
5145
5146         if (!wiphy_ext_feature_isset(&rdev->wiphy,
5147                                      NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP))
5148                 return -EINVAL;
5149
5150         ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX,
5151                                attrs, NULL, NULL);
5152         if (ret)
5153                 return ret;
5154
5155         if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] ||
5156             !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL])
5157                 return -EINVAL;
5158
5159         presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5160         presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]);
5161         presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]);
5162         return 0;
5163 }
5164
5165 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
5166                                             const u8 *rates)
5167 {
5168         int i;
5169
5170         if (!rates)
5171                 return;
5172
5173         for (i = 0; i < rates[1]; i++) {
5174                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
5175                         params->ht_required = true;
5176                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
5177                         params->vht_required = true;
5178                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY)
5179                         params->he_required = true;
5180                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E)
5181                         params->sae_h2e_required = true;
5182         }
5183 }
5184
5185 /*
5186  * Since the nl80211 API didn't include, from the beginning, attributes about
5187  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
5188  * benefit of drivers that rebuild IEs in the firmware.
5189  */
5190 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
5191 {
5192         const struct cfg80211_beacon_data *bcn = &params->beacon;
5193         size_t ies_len = bcn->tail_len;
5194         const u8 *ies = bcn->tail;
5195         const u8 *rates;
5196         const u8 *cap;
5197
5198         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
5199         nl80211_check_ap_rate_selectors(params, rates);
5200
5201         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
5202         nl80211_check_ap_rate_selectors(params, rates);
5203
5204         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
5205         if (cap && cap[1] >= sizeof(*params->ht_cap))
5206                 params->ht_cap = (void *)(cap + 2);
5207         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
5208         if (cap && cap[1] >= sizeof(*params->vht_cap))
5209                 params->vht_cap = (void *)(cap + 2);
5210         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
5211         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
5212                 params->he_cap = (void *)(cap + 3);
5213         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len);
5214         if (cap && cap[1] >= sizeof(*params->he_oper) + 1)
5215                 params->he_oper = (void *)(cap + 3);
5216 }
5217
5218 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
5219                                    struct cfg80211_ap_settings *params)
5220 {
5221         struct wireless_dev *wdev;
5222         bool ret = false;
5223
5224         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
5225                 if (wdev->iftype != NL80211_IFTYPE_AP &&
5226                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
5227                         continue;
5228
5229                 if (!wdev->preset_chandef.chan)
5230                         continue;
5231
5232                 params->chandef = wdev->preset_chandef;
5233                 ret = true;
5234                 break;
5235         }
5236
5237         return ret;
5238 }
5239
5240 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
5241                                     enum nl80211_auth_type auth_type,
5242                                     enum nl80211_commands cmd)
5243 {
5244         if (auth_type > NL80211_AUTHTYPE_MAX)
5245                 return false;
5246
5247         switch (cmd) {
5248         case NL80211_CMD_AUTHENTICATE:
5249                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5250                     auth_type == NL80211_AUTHTYPE_SAE)
5251                         return false;
5252                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5253                                              NL80211_EXT_FEATURE_FILS_STA) &&
5254                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5255                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5256                      auth_type == NL80211_AUTHTYPE_FILS_PK))
5257                         return false;
5258                 return true;
5259         case NL80211_CMD_CONNECT:
5260                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
5261                     !wiphy_ext_feature_isset(&rdev->wiphy,
5262                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
5263                     auth_type == NL80211_AUTHTYPE_SAE)
5264                         return false;
5265
5266                 /* FILS with SK PFS or PK not supported yet */
5267                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5268                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5269                         return false;
5270                 if (!wiphy_ext_feature_isset(
5271                             &rdev->wiphy,
5272                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
5273                     auth_type == NL80211_AUTHTYPE_FILS_SK)
5274                         return false;
5275                 return true;
5276         case NL80211_CMD_START_AP:
5277                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
5278                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) &&
5279                     auth_type == NL80211_AUTHTYPE_SAE)
5280                         return false;
5281                 /* FILS not supported yet */
5282                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
5283                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
5284                     auth_type == NL80211_AUTHTYPE_FILS_PK)
5285                         return false;
5286                 return true;
5287         default:
5288                 return false;
5289         }
5290 }
5291
5292 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
5293 {
5294         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5295         struct net_device *dev = info->user_ptr[1];
5296         struct wireless_dev *wdev = dev->ieee80211_ptr;
5297         struct cfg80211_ap_settings params;
5298         int err;
5299
5300         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5301             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5302                 return -EOPNOTSUPP;
5303
5304         if (!rdev->ops->start_ap)
5305                 return -EOPNOTSUPP;
5306
5307         if (wdev->beacon_interval)
5308                 return -EALREADY;
5309
5310         memset(&params, 0, sizeof(params));
5311
5312         /* these are required for START_AP */
5313         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
5314             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
5315             !info->attrs[NL80211_ATTR_BEACON_HEAD])
5316                 return -EINVAL;
5317
5318         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
5319         if (err)
5320                 return err;
5321
5322         params.beacon_interval =
5323                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
5324         params.dtim_period =
5325                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
5326
5327         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
5328                                            params.beacon_interval);
5329         if (err)
5330                 return err;
5331
5332         /*
5333          * In theory, some of these attributes should be required here
5334          * but since they were not used when the command was originally
5335          * added, keep them optional for old user space programs to let
5336          * them continue to work with drivers that do not need the
5337          * additional information -- drivers must check!
5338          */
5339         if (info->attrs[NL80211_ATTR_SSID]) {
5340                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
5341                 params.ssid_len =
5342                         nla_len(info->attrs[NL80211_ATTR_SSID]);
5343                 if (params.ssid_len == 0)
5344                         return -EINVAL;
5345         }
5346
5347         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
5348                 params.hidden_ssid = nla_get_u32(
5349                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
5350
5351         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
5352
5353         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
5354                 params.auth_type = nla_get_u32(
5355                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
5356                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
5357                                              NL80211_CMD_START_AP))
5358                         return -EINVAL;
5359         } else
5360                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
5361
5362         err = nl80211_crypto_settings(rdev, info, &params.crypto,
5363                                       NL80211_MAX_NR_CIPHER_SUITES);
5364         if (err)
5365                 return err;
5366
5367         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
5368                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
5369                         return -EOPNOTSUPP;
5370                 params.inactivity_timeout = nla_get_u16(
5371                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
5372         }
5373
5374         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
5375                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5376                         return -EINVAL;
5377                 params.p2p_ctwindow =
5378                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
5379                 if (params.p2p_ctwindow != 0 &&
5380                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
5381                         return -EINVAL;
5382         }
5383
5384         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
5385                 u8 tmp;
5386
5387                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5388                         return -EINVAL;
5389                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
5390                 params.p2p_opp_ps = tmp;
5391                 if (params.p2p_opp_ps != 0 &&
5392                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
5393                         return -EINVAL;
5394         }
5395
5396         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
5397                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
5398                 if (err)
5399                         return err;
5400         } else if (wdev->preset_chandef.chan) {
5401                 params.chandef = wdev->preset_chandef;
5402         } else if (!nl80211_get_ap_channel(rdev, &params))
5403                 return -EINVAL;
5404
5405         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
5406                                            wdev->iftype))
5407                 return -EINVAL;
5408
5409         if (info->attrs[NL80211_ATTR_TX_RATES]) {
5410                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
5411                                                     NL80211_ATTR_TX_RATES,
5412                                                     &params.beacon_rate,
5413                                                     dev, false);
5414                 if (err)
5415                         return err;
5416
5417                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
5418                                               &params.beacon_rate);
5419                 if (err)
5420                         return err;
5421         }
5422
5423         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
5424                 params.smps_mode =
5425                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
5426                 switch (params.smps_mode) {
5427                 case NL80211_SMPS_OFF:
5428                         break;
5429                 case NL80211_SMPS_STATIC:
5430                         if (!(rdev->wiphy.features &
5431                               NL80211_FEATURE_STATIC_SMPS))
5432                                 return -EINVAL;
5433                         break;
5434                 case NL80211_SMPS_DYNAMIC:
5435                         if (!(rdev->wiphy.features &
5436                               NL80211_FEATURE_DYNAMIC_SMPS))
5437                                 return -EINVAL;
5438                         break;
5439                 default:
5440                         return -EINVAL;
5441                 }
5442         } else {
5443                 params.smps_mode = NL80211_SMPS_OFF;
5444         }
5445
5446         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
5447         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
5448                 return -EOPNOTSUPP;
5449
5450         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
5451                 params.acl = parse_acl_data(&rdev->wiphy, info);
5452                 if (IS_ERR(params.acl))
5453                         return PTR_ERR(params.acl);
5454         }
5455
5456         params.twt_responder =
5457                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
5458
5459         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
5460                 err = nl80211_parse_he_obss_pd(
5461                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
5462                                         &params.he_obss_pd);
5463                 if (err)
5464                         goto out;
5465         }
5466
5467         if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) {
5468                 err = nl80211_parse_he_bss_color(
5469                                         info->attrs[NL80211_ATTR_HE_BSS_COLOR],
5470                                         &params.he_bss_color);
5471                 if (err)
5472                         goto out;
5473         }
5474
5475         if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
5476                 err = nl80211_parse_fils_discovery(rdev,
5477                                                    info->attrs[NL80211_ATTR_FILS_DISCOVERY],
5478                                                    &params);
5479                 if (err)
5480                         goto out;
5481         }
5482
5483         if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
5484                 err = nl80211_parse_unsol_bcast_probe_resp(
5485                         rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
5486                         &params);
5487                 if (err)
5488                         return err;
5489         }
5490
5491         nl80211_calculate_ap_params(&params);
5492
5493         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
5494                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
5495
5496         wdev_lock(wdev);
5497         err = rdev_start_ap(rdev, dev, &params);
5498         if (!err) {
5499                 wdev->preset_chandef = params.chandef;
5500                 wdev->beacon_interval = params.beacon_interval;
5501                 wdev->chandef = params.chandef;
5502                 wdev->ssid_len = params.ssid_len;
5503                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
5504
5505                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
5506                         wdev->conn_owner_nlportid = info->snd_portid;
5507         }
5508         wdev_unlock(wdev);
5509
5510 out:
5511         kfree(params.acl);
5512
5513         return err;
5514 }
5515
5516 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
5517 {
5518         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5519         struct net_device *dev = info->user_ptr[1];
5520         struct wireless_dev *wdev = dev->ieee80211_ptr;
5521         struct cfg80211_beacon_data params;
5522         int err;
5523
5524         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5525             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
5526                 return -EOPNOTSUPP;
5527
5528         if (!rdev->ops->change_beacon)
5529                 return -EOPNOTSUPP;
5530
5531         if (!wdev->beacon_interval)
5532                 return -EINVAL;
5533
5534         err = nl80211_parse_beacon(rdev, info->attrs, &params);
5535         if (err)
5536                 return err;
5537
5538         wdev_lock(wdev);
5539         err = rdev_change_beacon(rdev, dev, &params);
5540         wdev_unlock(wdev);
5541
5542         return err;
5543 }
5544
5545 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
5546 {
5547         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5548         struct net_device *dev = info->user_ptr[1];
5549
5550         return cfg80211_stop_ap(rdev, dev, false);
5551 }
5552
5553 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
5554         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
5555         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
5556         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
5557         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
5558         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
5559         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
5560 };
5561
5562 static int parse_station_flags(struct genl_info *info,
5563                                enum nl80211_iftype iftype,
5564                                struct station_parameters *params)
5565 {
5566         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
5567         struct nlattr *nla;
5568         int flag;
5569
5570         /*
5571          * Try parsing the new attribute first so userspace
5572          * can specify both for older kernels.
5573          */
5574         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
5575         if (nla) {
5576                 struct nl80211_sta_flag_update *sta_flags;
5577
5578                 sta_flags = nla_data(nla);
5579                 params->sta_flags_mask = sta_flags->mask;
5580                 params->sta_flags_set = sta_flags->set;
5581                 params->sta_flags_set &= params->sta_flags_mask;
5582                 if ((params->sta_flags_mask |
5583                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
5584                         return -EINVAL;
5585                 return 0;
5586         }
5587
5588         /* if present, parse the old attribute */
5589
5590         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
5591         if (!nla)
5592                 return 0;
5593
5594         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
5595                 return -EINVAL;
5596
5597         /*
5598          * Only allow certain flags for interface types so that
5599          * other attributes are silently ignored. Remember that
5600          * this is backward compatibility code with old userspace
5601          * and shouldn't be hit in other cases anyway.
5602          */
5603         switch (iftype) {
5604         case NL80211_IFTYPE_AP:
5605         case NL80211_IFTYPE_AP_VLAN:
5606         case NL80211_IFTYPE_P2P_GO:
5607                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5608                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5609                                          BIT(NL80211_STA_FLAG_WME) |
5610                                          BIT(NL80211_STA_FLAG_MFP);
5611                 break;
5612         case NL80211_IFTYPE_P2P_CLIENT:
5613         case NL80211_IFTYPE_STATION:
5614                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
5615                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
5616                 break;
5617         case NL80211_IFTYPE_MESH_POINT:
5618                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5619                                          BIT(NL80211_STA_FLAG_MFP) |
5620                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
5621                 break;
5622         default:
5623                 return -EINVAL;
5624         }
5625
5626         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
5627                 if (flags[flag]) {
5628                         params->sta_flags_set |= (1<<flag);
5629
5630                         /* no longer support new API additions in old API */
5631                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
5632                                 return -EINVAL;
5633                 }
5634         }
5635
5636         return 0;
5637 }
5638
5639 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
5640 {
5641         struct nlattr *rate;
5642         u32 bitrate;
5643         u16 bitrate_compat;
5644         enum nl80211_rate_info rate_flg;
5645
5646         rate = nla_nest_start_noflag(msg, attr);
5647         if (!rate)
5648                 return false;
5649
5650         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
5651         bitrate = cfg80211_calculate_bitrate(info);
5652         /* report 16-bit bitrate only if we can */
5653         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
5654         if (bitrate > 0 &&
5655             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
5656                 return false;
5657         if (bitrate_compat > 0 &&
5658             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
5659                 return false;
5660
5661         switch (info->bw) {
5662         case RATE_INFO_BW_5:
5663                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
5664                 break;
5665         case RATE_INFO_BW_10:
5666                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
5667                 break;
5668         default:
5669                 WARN_ON(1);
5670                 fallthrough;
5671         case RATE_INFO_BW_20:
5672                 rate_flg = 0;
5673                 break;
5674         case RATE_INFO_BW_40:
5675                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
5676                 break;
5677         case RATE_INFO_BW_80:
5678                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
5679                 break;
5680         case RATE_INFO_BW_160:
5681                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
5682                 break;
5683         case RATE_INFO_BW_HE_RU:
5684                 rate_flg = 0;
5685                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5686         }
5687
5688         if (rate_flg && nla_put_flag(msg, rate_flg))
5689                 return false;
5690
5691         if (info->flags & RATE_INFO_FLAGS_MCS) {
5692                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5693                         return false;
5694                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5695                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5696                         return false;
5697         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5698                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5699                         return false;
5700                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5701                         return false;
5702                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5703                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5704                         return false;
5705         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5706                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5707                         return false;
5708                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5709                         return false;
5710                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5711                         return false;
5712                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5713                         return false;
5714                 if (info->bw == RATE_INFO_BW_HE_RU &&
5715                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5716                                info->he_ru_alloc))
5717                         return false;
5718         }
5719
5720         nla_nest_end(msg, rate);
5721         return true;
5722 }
5723
5724 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5725                                int id)
5726 {
5727         void *attr;
5728         int i = 0;
5729
5730         if (!mask)
5731                 return true;
5732
5733         attr = nla_nest_start_noflag(msg, id);
5734         if (!attr)
5735                 return false;
5736
5737         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5738                 if (!(mask & BIT(i)))
5739                         continue;
5740
5741                 if (nla_put_u8(msg, i, signal[i]))
5742                         return false;
5743         }
5744
5745         nla_nest_end(msg, attr);
5746
5747         return true;
5748 }
5749
5750 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5751                                 u32 seq, int flags,
5752                                 struct cfg80211_registered_device *rdev,
5753                                 struct net_device *dev,
5754                                 const u8 *mac_addr, struct station_info *sinfo)
5755 {
5756         void *hdr;
5757         struct nlattr *sinfoattr, *bss_param;
5758
5759         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5760         if (!hdr) {
5761                 cfg80211_sinfo_release_content(sinfo);
5762                 return -1;
5763         }
5764
5765         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5766             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5767             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5768                 goto nla_put_failure;
5769
5770         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5771         if (!sinfoattr)
5772                 goto nla_put_failure;
5773
5774 #define PUT_SINFO(attr, memb, type) do {                                \
5775         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5776         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5777             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5778                              sinfo->memb))                              \
5779                 goto nla_put_failure;                                   \
5780         } while (0)
5781 #define PUT_SINFO_U64(attr, memb) do {                                  \
5782         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5783             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5784                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5785                 goto nla_put_failure;                                   \
5786         } while (0)
5787
5788         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5789         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5790         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5791
5792         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5793                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5794             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5795                         (u32)sinfo->rx_bytes))
5796                 goto nla_put_failure;
5797
5798         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5799                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5800             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5801                         (u32)sinfo->tx_bytes))
5802                 goto nla_put_failure;
5803
5804         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5805         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5806         PUT_SINFO(LLID, llid, u16);
5807         PUT_SINFO(PLID, plid, u16);
5808         PUT_SINFO(PLINK_STATE, plink_state, u8);
5809         PUT_SINFO_U64(RX_DURATION, rx_duration);
5810         PUT_SINFO_U64(TX_DURATION, tx_duration);
5811
5812         if (wiphy_ext_feature_isset(&rdev->wiphy,
5813                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5814                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5815
5816         switch (rdev->wiphy.signal_type) {
5817         case CFG80211_SIGNAL_TYPE_MBM:
5818                 PUT_SINFO(SIGNAL, signal, u8);
5819                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5820                 break;
5821         default:
5822                 break;
5823         }
5824         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5825                 if (!nl80211_put_signal(msg, sinfo->chains,
5826                                         sinfo->chain_signal,
5827                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5828                         goto nla_put_failure;
5829         }
5830         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5831                 if (!nl80211_put_signal(msg, sinfo->chains,
5832                                         sinfo->chain_signal_avg,
5833                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5834                         goto nla_put_failure;
5835         }
5836         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5837                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5838                                           NL80211_STA_INFO_TX_BITRATE))
5839                         goto nla_put_failure;
5840         }
5841         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5842                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5843                                           NL80211_STA_INFO_RX_BITRATE))
5844                         goto nla_put_failure;
5845         }
5846
5847         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5848         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5849         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5850         PUT_SINFO(TX_FAILED, tx_failed, u32);
5851         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5852         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5853         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5854         PUT_SINFO(LOCAL_PM, local_pm, u32);
5855         PUT_SINFO(PEER_PM, peer_pm, u32);
5856         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5857         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5858         PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8);
5859
5860         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5861                 bss_param = nla_nest_start_noflag(msg,
5862                                                   NL80211_STA_INFO_BSS_PARAM);
5863                 if (!bss_param)
5864                         goto nla_put_failure;
5865
5866                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5867                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5868                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5869                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5870                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5871                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5872                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5873                                sinfo->bss_param.dtim_period) ||
5874                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5875                                 sinfo->bss_param.beacon_interval))
5876                         goto nla_put_failure;
5877
5878                 nla_nest_end(msg, bss_param);
5879         }
5880         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5881             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5882                     sizeof(struct nl80211_sta_flag_update),
5883                     &sinfo->sta_flags))
5884                 goto nla_put_failure;
5885
5886         PUT_SINFO_U64(T_OFFSET, t_offset);
5887         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5888         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5889         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5890         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5891         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5892         if (wiphy_ext_feature_isset(&rdev->wiphy,
5893                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5894                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5895                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5896         }
5897
5898 #undef PUT_SINFO
5899 #undef PUT_SINFO_U64
5900
5901         if (sinfo->pertid) {
5902                 struct nlattr *tidsattr;
5903                 int tid;
5904
5905                 tidsattr = nla_nest_start_noflag(msg,
5906                                                  NL80211_STA_INFO_TID_STATS);
5907                 if (!tidsattr)
5908                         goto nla_put_failure;
5909
5910                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5911                         struct cfg80211_tid_stats *tidstats;
5912                         struct nlattr *tidattr;
5913
5914                         tidstats = &sinfo->pertid[tid];
5915
5916                         if (!tidstats->filled)
5917                                 continue;
5918
5919                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5920                         if (!tidattr)
5921                                 goto nla_put_failure;
5922
5923 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5924         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5925             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5926                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5927                 goto nla_put_failure;                                   \
5928         } while (0)
5929
5930                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5931                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5932                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5933                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5934
5935 #undef PUT_TIDVAL_U64
5936                         if ((tidstats->filled &
5937                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5938                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5939                                                    NL80211_TID_STATS_TXQ_STATS))
5940                                 goto nla_put_failure;
5941
5942                         nla_nest_end(msg, tidattr);
5943                 }
5944
5945                 nla_nest_end(msg, tidsattr);
5946         }
5947
5948         nla_nest_end(msg, sinfoattr);
5949
5950         if (sinfo->assoc_req_ies_len &&
5951             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5952                     sinfo->assoc_req_ies))
5953                 goto nla_put_failure;
5954
5955         cfg80211_sinfo_release_content(sinfo);
5956         genlmsg_end(msg, hdr);
5957         return 0;
5958
5959  nla_put_failure:
5960         cfg80211_sinfo_release_content(sinfo);
5961         genlmsg_cancel(msg, hdr);
5962         return -EMSGSIZE;
5963 }
5964
5965 static int nl80211_dump_station(struct sk_buff *skb,
5966                                 struct netlink_callback *cb)
5967 {
5968         struct station_info sinfo;
5969         struct cfg80211_registered_device *rdev;
5970         struct wireless_dev *wdev;
5971         u8 mac_addr[ETH_ALEN];
5972         int sta_idx = cb->args[2];
5973         int err;
5974
5975         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5976         if (err)
5977                 return err;
5978         /* nl80211_prepare_wdev_dump acquired it in the successful case */
5979         __acquire(&rdev->wiphy.mtx);
5980
5981         if (!wdev->netdev) {
5982                 err = -EINVAL;
5983                 goto out_err;
5984         }
5985
5986         if (!rdev->ops->dump_station) {
5987                 err = -EOPNOTSUPP;
5988                 goto out_err;
5989         }
5990
5991         while (1) {
5992                 memset(&sinfo, 0, sizeof(sinfo));
5993                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5994                                         mac_addr, &sinfo);
5995                 if (err == -ENOENT)
5996                         break;
5997                 if (err)
5998                         goto out_err;
5999
6000                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
6001                                 NETLINK_CB(cb->skb).portid,
6002                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
6003                                 rdev, wdev->netdev, mac_addr,
6004                                 &sinfo) < 0)
6005                         goto out;
6006
6007                 sta_idx++;
6008         }
6009
6010  out:
6011         cb->args[2] = sta_idx;
6012         err = skb->len;
6013  out_err:
6014         wiphy_unlock(&rdev->wiphy);
6015
6016         return err;
6017 }
6018
6019 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
6020 {
6021         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6022         struct net_device *dev = info->user_ptr[1];
6023         struct station_info sinfo;
6024         struct sk_buff *msg;
6025         u8 *mac_addr = NULL;
6026         int err;
6027
6028         memset(&sinfo, 0, sizeof(sinfo));
6029
6030         if (!info->attrs[NL80211_ATTR_MAC])
6031                 return -EINVAL;
6032
6033         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6034
6035         if (!rdev->ops->get_station)
6036                 return -EOPNOTSUPP;
6037
6038         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
6039         if (err)
6040                 return err;
6041
6042         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6043         if (!msg) {
6044                 cfg80211_sinfo_release_content(&sinfo);
6045                 return -ENOMEM;
6046         }
6047
6048         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
6049                                  info->snd_portid, info->snd_seq, 0,
6050                                  rdev, dev, mac_addr, &sinfo) < 0) {
6051                 nlmsg_free(msg);
6052                 return -ENOBUFS;
6053         }
6054
6055         return genlmsg_reply(msg, info);
6056 }
6057
6058 int cfg80211_check_station_change(struct wiphy *wiphy,
6059                                   struct station_parameters *params,
6060                                   enum cfg80211_station_type statype)
6061 {
6062         if (params->listen_interval != -1 &&
6063             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6064                 return -EINVAL;
6065
6066         if (params->support_p2p_ps != -1 &&
6067             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6068                 return -EINVAL;
6069
6070         if (params->aid &&
6071             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
6072             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
6073                 return -EINVAL;
6074
6075         /* When you run into this, adjust the code below for the new flag */
6076         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6077
6078         switch (statype) {
6079         case CFG80211_STA_MESH_PEER_KERNEL:
6080         case CFG80211_STA_MESH_PEER_USER:
6081                 /*
6082                  * No ignoring the TDLS flag here -- the userspace mesh
6083                  * code doesn't have the bug of including TDLS in the
6084                  * mask everywhere.
6085                  */
6086                 if (params->sta_flags_mask &
6087                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6088                                   BIT(NL80211_STA_FLAG_MFP) |
6089                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
6090                         return -EINVAL;
6091                 break;
6092         case CFG80211_STA_TDLS_PEER_SETUP:
6093         case CFG80211_STA_TDLS_PEER_ACTIVE:
6094                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6095                         return -EINVAL;
6096                 /* ignore since it can't change */
6097                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6098                 break;
6099         default:
6100                 /* disallow mesh-specific things */
6101                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
6102                         return -EINVAL;
6103                 if (params->local_pm)
6104                         return -EINVAL;
6105                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6106                         return -EINVAL;
6107         }
6108
6109         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6110             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
6111                 /* TDLS can't be set, ... */
6112                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
6113                         return -EINVAL;
6114                 /*
6115                  * ... but don't bother the driver with it. This works around
6116                  * a hostapd/wpa_supplicant issue -- it always includes the
6117                  * TLDS_PEER flag in the mask even for AP mode.
6118                  */
6119                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6120         }
6121
6122         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
6123             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6124                 /* reject other things that can't change */
6125                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
6126                         return -EINVAL;
6127                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
6128                         return -EINVAL;
6129                 if (params->supported_rates)
6130                         return -EINVAL;
6131                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
6132                     params->he_capa)
6133                         return -EINVAL;
6134         }
6135
6136         if (statype != CFG80211_STA_AP_CLIENT &&
6137             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
6138                 if (params->vlan)
6139                         return -EINVAL;
6140         }
6141
6142         switch (statype) {
6143         case CFG80211_STA_AP_MLME_CLIENT:
6144                 /* Use this only for authorizing/unauthorizing a station */
6145                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
6146                         return -EOPNOTSUPP;
6147                 break;
6148         case CFG80211_STA_AP_CLIENT:
6149         case CFG80211_STA_AP_CLIENT_UNASSOC:
6150                 /* accept only the listed bits */
6151                 if (params->sta_flags_mask &
6152                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6153                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6154                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
6155                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
6156                                   BIT(NL80211_STA_FLAG_WME) |
6157                                   BIT(NL80211_STA_FLAG_MFP)))
6158                         return -EINVAL;
6159
6160                 /* but authenticated/associated only if driver handles it */
6161                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6162                     params->sta_flags_mask &
6163                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6164                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
6165                         return -EINVAL;
6166                 break;
6167         case CFG80211_STA_IBSS:
6168         case CFG80211_STA_AP_STA:
6169                 /* reject any changes other than AUTHORIZED */
6170                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
6171                         return -EINVAL;
6172                 break;
6173         case CFG80211_STA_TDLS_PEER_SETUP:
6174                 /* reject any changes other than AUTHORIZED or WME */
6175                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
6176                                                BIT(NL80211_STA_FLAG_WME)))
6177                         return -EINVAL;
6178                 /* force (at least) rates when authorizing */
6179                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
6180                     !params->supported_rates)
6181                         return -EINVAL;
6182                 break;
6183         case CFG80211_STA_TDLS_PEER_ACTIVE:
6184                 /* reject any changes */
6185                 return -EINVAL;
6186         case CFG80211_STA_MESH_PEER_KERNEL:
6187                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
6188                         return -EINVAL;
6189                 break;
6190         case CFG80211_STA_MESH_PEER_USER:
6191                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
6192                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
6193                         return -EINVAL;
6194                 break;
6195         }
6196
6197         /*
6198          * Older kernel versions ignored this attribute entirely, so don't
6199          * reject attempts to update it but mark it as unused instead so the
6200          * driver won't look at the data.
6201          */
6202         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
6203             statype != CFG80211_STA_TDLS_PEER_SETUP)
6204                 params->opmode_notif_used = false;
6205
6206         return 0;
6207 }
6208 EXPORT_SYMBOL(cfg80211_check_station_change);
6209
6210 /*
6211  * Get vlan interface making sure it is running and on the right wiphy.
6212  */
6213 static struct net_device *get_vlan(struct genl_info *info,
6214                                    struct cfg80211_registered_device *rdev)
6215 {
6216         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
6217         struct net_device *v;
6218         int ret;
6219
6220         if (!vlanattr)
6221                 return NULL;
6222
6223         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
6224         if (!v)
6225                 return ERR_PTR(-ENODEV);
6226
6227         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
6228                 ret = -EINVAL;
6229                 goto error;
6230         }
6231
6232         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6233             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6234             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
6235                 ret = -EINVAL;
6236                 goto error;
6237         }
6238
6239         if (!netif_running(v)) {
6240                 ret = -ENETDOWN;
6241                 goto error;
6242         }
6243
6244         return v;
6245  error:
6246         dev_put(v);
6247         return ERR_PTR(ret);
6248 }
6249
6250 static const struct nla_policy
6251 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
6252         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
6253         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
6254 };
6255
6256 static int nl80211_parse_sta_wme(struct genl_info *info,
6257                                  struct station_parameters *params)
6258 {
6259         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
6260         struct nlattr *nla;
6261         int err;
6262
6263         /* parse WME attributes if present */
6264         if (!info->attrs[NL80211_ATTR_STA_WME])
6265                 return 0;
6266
6267         nla = info->attrs[NL80211_ATTR_STA_WME];
6268         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
6269                                           nl80211_sta_wme_policy,
6270                                           info->extack);
6271         if (err)
6272                 return err;
6273
6274         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
6275                 params->uapsd_queues = nla_get_u8(
6276                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
6277         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
6278                 return -EINVAL;
6279
6280         if (tb[NL80211_STA_WME_MAX_SP])
6281                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
6282
6283         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
6284                 return -EINVAL;
6285
6286         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
6287
6288         return 0;
6289 }
6290
6291 static int nl80211_parse_sta_channel_info(struct genl_info *info,
6292                                       struct station_parameters *params)
6293 {
6294         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
6295                 params->supported_channels =
6296                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6297                 params->supported_channels_len =
6298                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
6299                 /*
6300                  * Need to include at least one (first channel, number of
6301                  * channels) tuple for each subband (checked in policy),
6302                  * and must have proper tuples for the rest of the data as well.
6303                  */
6304                 if (params->supported_channels_len % 2)
6305                         return -EINVAL;
6306         }
6307
6308         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
6309                 params->supported_oper_classes =
6310                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6311                 params->supported_oper_classes_len =
6312                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
6313         }
6314         return 0;
6315 }
6316
6317 static int nl80211_set_station_tdls(struct genl_info *info,
6318                                     struct station_parameters *params)
6319 {
6320         int err;
6321         /* Dummy STA entry gets updated once the peer capabilities are known */
6322         if (info->attrs[NL80211_ATTR_PEER_AID])
6323                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6324         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6325                 params->ht_capa =
6326                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6327         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6328                 params->vht_capa =
6329                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6330         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6331                 params->he_capa =
6332                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6333                 params->he_capa_len =
6334                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6335         }
6336
6337         err = nl80211_parse_sta_channel_info(info, params);
6338         if (err)
6339                 return err;
6340
6341         return nl80211_parse_sta_wme(info, params);
6342 }
6343
6344 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
6345                                              struct station_parameters *params)
6346 {
6347         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6348         int idx;
6349
6350         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
6351                 if (!rdev->ops->set_tx_power ||
6352                     !wiphy_ext_feature_isset(&rdev->wiphy,
6353                                          NL80211_EXT_FEATURE_STA_TX_PWR))
6354                         return -EOPNOTSUPP;
6355
6356                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
6357                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
6358
6359                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
6360                         idx = NL80211_ATTR_STA_TX_POWER;
6361
6362                         if (info->attrs[idx])
6363                                 params->txpwr.power =
6364                                         nla_get_s16(info->attrs[idx]);
6365                         else
6366                                 return -EINVAL;
6367                 }
6368                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
6369         }
6370
6371         return 0;
6372 }
6373
6374 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
6375 {
6376         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6377         struct net_device *dev = info->user_ptr[1];
6378         struct station_parameters params;
6379         u8 *mac_addr;
6380         int err;
6381
6382         memset(&params, 0, sizeof(params));
6383
6384         if (!rdev->ops->change_station)
6385                 return -EOPNOTSUPP;
6386
6387         /*
6388          * AID and listen_interval properties can be set only for unassociated
6389          * station. Include these parameters here and will check them in
6390          * cfg80211_check_station_change().
6391          */
6392         if (info->attrs[NL80211_ATTR_STA_AID])
6393                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6394
6395         if (info->attrs[NL80211_ATTR_VLAN_ID])
6396                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6397
6398         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6399                 params.listen_interval =
6400                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6401         else
6402                 params.listen_interval = -1;
6403
6404         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
6405                 params.support_p2p_ps =
6406                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6407         else
6408                 params.support_p2p_ps = -1;
6409
6410         if (!info->attrs[NL80211_ATTR_MAC])
6411                 return -EINVAL;
6412
6413         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6414
6415         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
6416                 params.supported_rates =
6417                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6418                 params.supported_rates_len =
6419                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6420         }
6421
6422         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6423                 params.capability =
6424                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6425                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6426         }
6427
6428         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6429                 params.ext_capab =
6430                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6431                 params.ext_capab_len =
6432                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6433         }
6434
6435         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6436                 return -EINVAL;
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_STA_PLINK_STATE]) {
6443                 params.plink_state =
6444                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
6445                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
6446                         params.peer_aid = nla_get_u16(
6447                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
6448                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
6449         }
6450
6451         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
6452                 params.local_pm = nla_get_u32(
6453                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
6454
6455         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6456                 params.opmode_notif_used = true;
6457                 params.opmode_notif =
6458                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6459         }
6460
6461         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6462                 params.he_6ghz_capa =
6463                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6464
6465         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6466                 params.airtime_weight =
6467                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6468
6469         if (params.airtime_weight &&
6470             !wiphy_ext_feature_isset(&rdev->wiphy,
6471                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6472                 return -EOPNOTSUPP;
6473
6474         err = nl80211_parse_sta_txpower_setting(info, &params);
6475         if (err)
6476                 return err;
6477
6478         /* Include parameters for TDLS peer (will check later) */
6479         err = nl80211_set_station_tdls(info, &params);
6480         if (err)
6481                 return err;
6482
6483         params.vlan = get_vlan(info, rdev);
6484         if (IS_ERR(params.vlan))
6485                 return PTR_ERR(params.vlan);
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         case NL80211_IFTYPE_P2P_CLIENT:
6492         case NL80211_IFTYPE_STATION:
6493         case NL80211_IFTYPE_ADHOC:
6494         case NL80211_IFTYPE_MESH_POINT:
6495                 break;
6496         default:
6497                 err = -EOPNOTSUPP;
6498                 goto out_put_vlan;
6499         }
6500
6501         /* driver will call cfg80211_check_station_change() */
6502         err = rdev_change_station(rdev, dev, mac_addr, &params);
6503
6504  out_put_vlan:
6505         if (params.vlan)
6506                 dev_put(params.vlan);
6507
6508         return err;
6509 }
6510
6511 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
6512 {
6513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6514         int err;
6515         struct net_device *dev = info->user_ptr[1];
6516         struct station_parameters params;
6517         u8 *mac_addr = NULL;
6518         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
6519                          BIT(NL80211_STA_FLAG_ASSOCIATED);
6520
6521         memset(&params, 0, sizeof(params));
6522
6523         if (!rdev->ops->add_station)
6524                 return -EOPNOTSUPP;
6525
6526         if (!info->attrs[NL80211_ATTR_MAC])
6527                 return -EINVAL;
6528
6529         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
6530                 return -EINVAL;
6531
6532         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
6533                 return -EINVAL;
6534
6535         if (!info->attrs[NL80211_ATTR_STA_AID] &&
6536             !info->attrs[NL80211_ATTR_PEER_AID])
6537                 return -EINVAL;
6538
6539         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
6540         params.supported_rates =
6541                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6542         params.supported_rates_len =
6543                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
6544         params.listen_interval =
6545                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
6546
6547         if (info->attrs[NL80211_ATTR_VLAN_ID])
6548                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
6549
6550         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
6551                 params.support_p2p_ps =
6552                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
6553         } else {
6554                 /*
6555                  * if not specified, assume it's supported for P2P GO interface,
6556                  * and is NOT supported for AP interface
6557                  */
6558                 params.support_p2p_ps =
6559                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
6560         }
6561
6562         if (info->attrs[NL80211_ATTR_PEER_AID])
6563                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
6564         else
6565                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
6566
6567         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
6568                 params.capability =
6569                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
6570                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
6571         }
6572
6573         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
6574                 params.ext_capab =
6575                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6576                 params.ext_capab_len =
6577                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
6578         }
6579
6580         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
6581                 params.ht_capa =
6582                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
6583
6584         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
6585                 params.vht_capa =
6586                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
6587
6588         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
6589                 params.he_capa =
6590                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6591                 params.he_capa_len =
6592                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
6593         }
6594
6595         if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY])
6596                 params.he_6ghz_capa =
6597                         nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]);
6598
6599         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
6600                 params.opmode_notif_used = true;
6601                 params.opmode_notif =
6602                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
6603         }
6604
6605         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
6606                 params.plink_action =
6607                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
6608
6609         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
6610                 params.airtime_weight =
6611                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
6612
6613         if (params.airtime_weight &&
6614             !wiphy_ext_feature_isset(&rdev->wiphy,
6615                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
6616                 return -EOPNOTSUPP;
6617
6618         err = nl80211_parse_sta_txpower_setting(info, &params);
6619         if (err)
6620                 return err;
6621
6622         err = nl80211_parse_sta_channel_info(info, &params);
6623         if (err)
6624                 return err;
6625
6626         err = nl80211_parse_sta_wme(info, &params);
6627         if (err)
6628                 return err;
6629
6630         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
6631                 return -EINVAL;
6632
6633         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
6634          * as userspace might just pass through the capabilities from the IEs
6635          * directly, rather than enforcing this restriction and returning an
6636          * error in this case.
6637          */
6638         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
6639                 params.ht_capa = NULL;
6640                 params.vht_capa = NULL;
6641
6642                 /* HE requires WME */
6643                 if (params.he_capa_len || params.he_6ghz_capa)
6644                         return -EINVAL;
6645         }
6646
6647         /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */
6648         if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa))
6649                 return -EINVAL;
6650
6651         /* When you run into this, adjust the code below for the new flag */
6652         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
6653
6654         switch (dev->ieee80211_ptr->iftype) {
6655         case NL80211_IFTYPE_AP:
6656         case NL80211_IFTYPE_AP_VLAN:
6657         case NL80211_IFTYPE_P2P_GO:
6658                 /* ignore WME attributes if iface/sta is not capable */
6659                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
6660                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
6661                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6662
6663                 /* TDLS peers cannot be added */
6664                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6665                     info->attrs[NL80211_ATTR_PEER_AID])
6666                         return -EINVAL;
6667                 /* but don't bother the driver with it */
6668                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
6669
6670                 /* allow authenticated/associated only if driver handles it */
6671                 if (!(rdev->wiphy.features &
6672                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
6673                     params.sta_flags_mask & auth_assoc)
6674                         return -EINVAL;
6675
6676                 /* Older userspace, or userspace wanting to be compatible with
6677                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
6678                  * and assoc flags in the mask, but assumes the station will be
6679                  * added as associated anyway since this was the required driver
6680                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
6681                  * introduced.
6682                  * In order to not bother drivers with this quirk in the API
6683                  * set the flags in both the mask and set for new stations in
6684                  * this case.
6685                  */
6686                 if (!(params.sta_flags_mask & auth_assoc)) {
6687                         params.sta_flags_mask |= auth_assoc;
6688                         params.sta_flags_set |= auth_assoc;
6689                 }
6690
6691                 /* must be last in here for error handling */
6692                 params.vlan = get_vlan(info, rdev);
6693                 if (IS_ERR(params.vlan))
6694                         return PTR_ERR(params.vlan);
6695                 break;
6696         case NL80211_IFTYPE_MESH_POINT:
6697                 /* ignore uAPSD data */
6698                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6699
6700                 /* associated is disallowed */
6701                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6702                         return -EINVAL;
6703                 /* TDLS peers cannot be added */
6704                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6705                     info->attrs[NL80211_ATTR_PEER_AID])
6706                         return -EINVAL;
6707                 break;
6708         case NL80211_IFTYPE_STATION:
6709         case NL80211_IFTYPE_P2P_CLIENT:
6710                 /* ignore uAPSD data */
6711                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6712
6713                 /* these are disallowed */
6714                 if (params.sta_flags_mask &
6715                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6716                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6717                         return -EINVAL;
6718                 /* Only TDLS peers can be added */
6719                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6720                         return -EINVAL;
6721                 /* Can only add if TDLS ... */
6722                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6723                         return -EOPNOTSUPP;
6724                 /* ... with external setup is supported */
6725                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6726                         return -EOPNOTSUPP;
6727                 /*
6728                  * Older wpa_supplicant versions always mark the TDLS peer
6729                  * as authorized, but it shouldn't yet be.
6730                  */
6731                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6732                 break;
6733         default:
6734                 return -EOPNOTSUPP;
6735         }
6736
6737         /* be aware of params.vlan when changing code here */
6738
6739         err = rdev_add_station(rdev, dev, mac_addr, &params);
6740
6741         if (params.vlan)
6742                 dev_put(params.vlan);
6743         return err;
6744 }
6745
6746 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6747 {
6748         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6749         struct net_device *dev = info->user_ptr[1];
6750         struct station_del_parameters params;
6751
6752         memset(&params, 0, sizeof(params));
6753
6754         if (info->attrs[NL80211_ATTR_MAC])
6755                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6756
6757         switch (dev->ieee80211_ptr->iftype) {
6758         case NL80211_IFTYPE_AP:
6759         case NL80211_IFTYPE_AP_VLAN:
6760         case NL80211_IFTYPE_MESH_POINT:
6761         case NL80211_IFTYPE_P2P_GO:
6762                 /* always accept these */
6763                 break;
6764         case NL80211_IFTYPE_ADHOC:
6765                 /* conditionally accept */
6766                 if (wiphy_ext_feature_isset(&rdev->wiphy,
6767                                             NL80211_EXT_FEATURE_DEL_IBSS_STA))
6768                         break;
6769                 return -EINVAL;
6770         default:
6771                 return -EINVAL;
6772         }
6773
6774         if (!rdev->ops->del_station)
6775                 return -EOPNOTSUPP;
6776
6777         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6778                 params.subtype =
6779                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6780                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6781                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6782                         return -EINVAL;
6783         } else {
6784                 /* Default to Deauthentication frame */
6785                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6786         }
6787
6788         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6789                 params.reason_code =
6790                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6791                 if (params.reason_code == 0)
6792                         return -EINVAL; /* 0 is reserved */
6793         } else {
6794                 /* Default to reason code 2 */
6795                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6796         }
6797
6798         return rdev_del_station(rdev, dev, &params);
6799 }
6800
6801 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6802                                 int flags, struct net_device *dev,
6803                                 u8 *dst, u8 *next_hop,
6804                                 struct mpath_info *pinfo)
6805 {
6806         void *hdr;
6807         struct nlattr *pinfoattr;
6808
6809         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6810         if (!hdr)
6811                 return -1;
6812
6813         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6814             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6815             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6816             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6817                 goto nla_put_failure;
6818
6819         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6820         if (!pinfoattr)
6821                 goto nla_put_failure;
6822         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6823             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6824                         pinfo->frame_qlen))
6825                 goto nla_put_failure;
6826         if (((pinfo->filled & MPATH_INFO_SN) &&
6827              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6828             ((pinfo->filled & MPATH_INFO_METRIC) &&
6829              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6830                          pinfo->metric)) ||
6831             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6832              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6833                          pinfo->exptime)) ||
6834             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6835              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6836                         pinfo->flags)) ||
6837             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6838              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6839                          pinfo->discovery_timeout)) ||
6840             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6841              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6842                         pinfo->discovery_retries)) ||
6843             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6844              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6845                         pinfo->hop_count)) ||
6846             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6847              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6848                          pinfo->path_change_count)))
6849                 goto nla_put_failure;
6850
6851         nla_nest_end(msg, pinfoattr);
6852
6853         genlmsg_end(msg, hdr);
6854         return 0;
6855
6856  nla_put_failure:
6857         genlmsg_cancel(msg, hdr);
6858         return -EMSGSIZE;
6859 }
6860
6861 static int nl80211_dump_mpath(struct sk_buff *skb,
6862                               struct netlink_callback *cb)
6863 {
6864         struct mpath_info pinfo;
6865         struct cfg80211_registered_device *rdev;
6866         struct wireless_dev *wdev;
6867         u8 dst[ETH_ALEN];
6868         u8 next_hop[ETH_ALEN];
6869         int path_idx = cb->args[2];
6870         int err;
6871
6872         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6873         if (err)
6874                 return err;
6875         /* nl80211_prepare_wdev_dump acquired it in the successful case */
6876         __acquire(&rdev->wiphy.mtx);
6877
6878         if (!rdev->ops->dump_mpath) {
6879                 err = -EOPNOTSUPP;
6880                 goto out_err;
6881         }
6882
6883         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6884                 err = -EOPNOTSUPP;
6885                 goto out_err;
6886         }
6887
6888         while (1) {
6889                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6890                                       next_hop, &pinfo);
6891                 if (err == -ENOENT)
6892                         break;
6893                 if (err)
6894                         goto out_err;
6895
6896                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6897                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6898                                        wdev->netdev, dst, next_hop,
6899                                        &pinfo) < 0)
6900                         goto out;
6901
6902                 path_idx++;
6903         }
6904
6905  out:
6906         cb->args[2] = path_idx;
6907         err = skb->len;
6908  out_err:
6909         wiphy_unlock(&rdev->wiphy);
6910         return err;
6911 }
6912
6913 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6914 {
6915         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6916         int err;
6917         struct net_device *dev = info->user_ptr[1];
6918         struct mpath_info pinfo;
6919         struct sk_buff *msg;
6920         u8 *dst = NULL;
6921         u8 next_hop[ETH_ALEN];
6922
6923         memset(&pinfo, 0, sizeof(pinfo));
6924
6925         if (!info->attrs[NL80211_ATTR_MAC])
6926                 return -EINVAL;
6927
6928         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6929
6930         if (!rdev->ops->get_mpath)
6931                 return -EOPNOTSUPP;
6932
6933         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6934                 return -EOPNOTSUPP;
6935
6936         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6937         if (err)
6938                 return err;
6939
6940         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6941         if (!msg)
6942                 return -ENOMEM;
6943
6944         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6945                                  dev, dst, next_hop, &pinfo) < 0) {
6946                 nlmsg_free(msg);
6947                 return -ENOBUFS;
6948         }
6949
6950         return genlmsg_reply(msg, info);
6951 }
6952
6953 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6954 {
6955         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6956         struct net_device *dev = info->user_ptr[1];
6957         u8 *dst = NULL;
6958         u8 *next_hop = NULL;
6959
6960         if (!info->attrs[NL80211_ATTR_MAC])
6961                 return -EINVAL;
6962
6963         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6964                 return -EINVAL;
6965
6966         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6967         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6968
6969         if (!rdev->ops->change_mpath)
6970                 return -EOPNOTSUPP;
6971
6972         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6973                 return -EOPNOTSUPP;
6974
6975         return rdev_change_mpath(rdev, dev, dst, next_hop);
6976 }
6977
6978 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6979 {
6980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6981         struct net_device *dev = info->user_ptr[1];
6982         u8 *dst = NULL;
6983         u8 *next_hop = NULL;
6984
6985         if (!info->attrs[NL80211_ATTR_MAC])
6986                 return -EINVAL;
6987
6988         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6989                 return -EINVAL;
6990
6991         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6992         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6993
6994         if (!rdev->ops->add_mpath)
6995                 return -EOPNOTSUPP;
6996
6997         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6998                 return -EOPNOTSUPP;
6999
7000         return rdev_add_mpath(rdev, dev, dst, next_hop);
7001 }
7002
7003 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
7004 {
7005         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7006         struct net_device *dev = info->user_ptr[1];
7007         u8 *dst = NULL;
7008
7009         if (info->attrs[NL80211_ATTR_MAC])
7010                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7011
7012         if (!rdev->ops->del_mpath)
7013                 return -EOPNOTSUPP;
7014
7015         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7016                 return -EOPNOTSUPP;
7017
7018         return rdev_del_mpath(rdev, dev, dst);
7019 }
7020
7021 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
7022 {
7023         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7024         int err;
7025         struct net_device *dev = info->user_ptr[1];
7026         struct mpath_info pinfo;
7027         struct sk_buff *msg;
7028         u8 *dst = NULL;
7029         u8 mpp[ETH_ALEN];
7030
7031         memset(&pinfo, 0, sizeof(pinfo));
7032
7033         if (!info->attrs[NL80211_ATTR_MAC])
7034                 return -EINVAL;
7035
7036         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
7037
7038         if (!rdev->ops->get_mpp)
7039                 return -EOPNOTSUPP;
7040
7041         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
7042                 return -EOPNOTSUPP;
7043
7044         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
7045         if (err)
7046                 return err;
7047
7048         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7049         if (!msg)
7050                 return -ENOMEM;
7051
7052         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
7053                                dev, dst, mpp, &pinfo) < 0) {
7054                 nlmsg_free(msg);
7055                 return -ENOBUFS;
7056         }
7057
7058         return genlmsg_reply(msg, info);
7059 }
7060
7061 static int nl80211_dump_mpp(struct sk_buff *skb,
7062                             struct netlink_callback *cb)
7063 {
7064         struct mpath_info pinfo;
7065         struct cfg80211_registered_device *rdev;
7066         struct wireless_dev *wdev;
7067         u8 dst[ETH_ALEN];
7068         u8 mpp[ETH_ALEN];
7069         int path_idx = cb->args[2];
7070         int err;
7071
7072         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
7073         if (err)
7074                 return err;
7075         /* nl80211_prepare_wdev_dump acquired it in the successful case */
7076         __acquire(&rdev->wiphy.mtx);
7077
7078         if (!rdev->ops->dump_mpp) {
7079                 err = -EOPNOTSUPP;
7080                 goto out_err;
7081         }
7082
7083         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
7084                 err = -EOPNOTSUPP;
7085                 goto out_err;
7086         }
7087
7088         while (1) {
7089                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
7090                                     mpp, &pinfo);
7091                 if (err == -ENOENT)
7092                         break;
7093                 if (err)
7094                         goto out_err;
7095
7096                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
7097                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
7098                                        wdev->netdev, dst, mpp,
7099                                        &pinfo) < 0)
7100                         goto out;
7101
7102                 path_idx++;
7103         }
7104
7105  out:
7106         cb->args[2] = path_idx;
7107         err = skb->len;
7108  out_err:
7109         wiphy_unlock(&rdev->wiphy);
7110         return err;
7111 }
7112
7113 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
7114 {
7115         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7116         struct net_device *dev = info->user_ptr[1];
7117         struct wireless_dev *wdev = dev->ieee80211_ptr;
7118         struct bss_parameters params;
7119         int err;
7120
7121         memset(&params, 0, sizeof(params));
7122         /* default to not changing parameters */
7123         params.use_cts_prot = -1;
7124         params.use_short_preamble = -1;
7125         params.use_short_slot_time = -1;
7126         params.ap_isolate = -1;
7127         params.ht_opmode = -1;
7128         params.p2p_ctwindow = -1;
7129         params.p2p_opp_ps = -1;
7130
7131         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
7132                 params.use_cts_prot =
7133                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
7134         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
7135                 params.use_short_preamble =
7136                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
7137         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
7138                 params.use_short_slot_time =
7139                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
7140         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
7141                 params.basic_rates =
7142                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7143                 params.basic_rates_len =
7144                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
7145         }
7146         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
7147                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
7148         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
7149                 params.ht_opmode =
7150                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
7151
7152         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
7153                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7154                         return -EINVAL;
7155                 params.p2p_ctwindow =
7156                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
7157                 if (params.p2p_ctwindow != 0 &&
7158                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
7159                         return -EINVAL;
7160         }
7161
7162         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
7163                 u8 tmp;
7164
7165                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7166                         return -EINVAL;
7167                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
7168                 params.p2p_opp_ps = tmp;
7169                 if (params.p2p_opp_ps &&
7170                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
7171                         return -EINVAL;
7172         }
7173
7174         if (!rdev->ops->change_bss)
7175                 return -EOPNOTSUPP;
7176
7177         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
7178             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
7179                 return -EOPNOTSUPP;
7180
7181         wdev_lock(wdev);
7182         err = rdev_change_bss(rdev, dev, &params);
7183         wdev_unlock(wdev);
7184
7185         return err;
7186 }
7187
7188 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
7189 {
7190         char *data = NULL;
7191         bool is_indoor;
7192         enum nl80211_user_reg_hint_type user_reg_hint_type;
7193         u32 owner_nlportid;
7194
7195         /*
7196          * You should only get this when cfg80211 hasn't yet initialized
7197          * completely when built-in to the kernel right between the time
7198          * window between nl80211_init() and regulatory_init(), if that is
7199          * even possible.
7200          */
7201         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
7202                 return -EINPROGRESS;
7203
7204         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
7205                 user_reg_hint_type =
7206                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
7207         else
7208                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
7209
7210         switch (user_reg_hint_type) {
7211         case NL80211_USER_REG_HINT_USER:
7212         case NL80211_USER_REG_HINT_CELL_BASE:
7213                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7214                         return -EINVAL;
7215
7216                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7217                 return regulatory_hint_user(data, user_reg_hint_type);
7218         case NL80211_USER_REG_HINT_INDOOR:
7219                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
7220                         owner_nlportid = info->snd_portid;
7221                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
7222                 } else {
7223                         owner_nlportid = 0;
7224                         is_indoor = true;
7225                 }
7226
7227                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
7228         default:
7229                 return -EINVAL;
7230         }
7231 }
7232
7233 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
7234 {
7235         return reg_reload_regdb();
7236 }
7237
7238 static int nl80211_get_mesh_config(struct sk_buff *skb,
7239                                    struct genl_info *info)
7240 {
7241         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7242         struct net_device *dev = info->user_ptr[1];
7243         struct wireless_dev *wdev = dev->ieee80211_ptr;
7244         struct mesh_config cur_params;
7245         int err = 0;
7246         void *hdr;
7247         struct nlattr *pinfoattr;
7248         struct sk_buff *msg;
7249
7250         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7251                 return -EOPNOTSUPP;
7252
7253         if (!rdev->ops->get_mesh_config)
7254                 return -EOPNOTSUPP;
7255
7256         wdev_lock(wdev);
7257         /* If not connected, get default parameters */
7258         if (!wdev->mesh_id_len)
7259                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
7260         else
7261                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
7262         wdev_unlock(wdev);
7263
7264         if (err)
7265                 return err;
7266
7267         /* Draw up a netlink message to send back */
7268         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7269         if (!msg)
7270                 return -ENOMEM;
7271         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7272                              NL80211_CMD_GET_MESH_CONFIG);
7273         if (!hdr)
7274                 goto out;
7275         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
7276         if (!pinfoattr)
7277                 goto nla_put_failure;
7278         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
7279             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
7280                         cur_params.dot11MeshRetryTimeout) ||
7281             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
7282                         cur_params.dot11MeshConfirmTimeout) ||
7283             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
7284                         cur_params.dot11MeshHoldingTimeout) ||
7285             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
7286                         cur_params.dot11MeshMaxPeerLinks) ||
7287             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
7288                        cur_params.dot11MeshMaxRetries) ||
7289             nla_put_u8(msg, NL80211_MESHCONF_TTL,
7290                        cur_params.dot11MeshTTL) ||
7291             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
7292                        cur_params.element_ttl) ||
7293             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7294                        cur_params.auto_open_plinks) ||
7295             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7296                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
7297             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7298                        cur_params.dot11MeshHWMPmaxPREQretries) ||
7299             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
7300                         cur_params.path_refresh_time) ||
7301             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7302                         cur_params.min_discovery_timeout) ||
7303             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7304                         cur_params.dot11MeshHWMPactivePathTimeout) ||
7305             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7306                         cur_params.dot11MeshHWMPpreqMinInterval) ||
7307             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7308                         cur_params.dot11MeshHWMPperrMinInterval) ||
7309             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7310                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
7311             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
7312                        cur_params.dot11MeshHWMPRootMode) ||
7313             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7314                         cur_params.dot11MeshHWMPRannInterval) ||
7315             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7316                        cur_params.dot11MeshGateAnnouncementProtocol) ||
7317             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
7318                        cur_params.dot11MeshForwarding) ||
7319             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
7320                         cur_params.rssi_threshold) ||
7321             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
7322                         cur_params.ht_opmode) ||
7323             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7324                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
7325             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7326                         cur_params.dot11MeshHWMProotInterval) ||
7327             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7328                         cur_params.dot11MeshHWMPconfirmationInterval) ||
7329             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
7330                         cur_params.power_mode) ||
7331             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
7332                         cur_params.dot11MeshAwakeWindowDuration) ||
7333             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
7334                         cur_params.plink_timeout) ||
7335             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
7336                        cur_params.dot11MeshConnectedToMeshGate) ||
7337             nla_put_u8(msg, NL80211_MESHCONF_NOLEARN,
7338                        cur_params.dot11MeshNolearn) ||
7339             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS,
7340                        cur_params.dot11MeshConnectedToAuthServer))
7341                 goto nla_put_failure;
7342         nla_nest_end(msg, pinfoattr);
7343         genlmsg_end(msg, hdr);
7344         return genlmsg_reply(msg, info);
7345
7346  nla_put_failure:
7347  out:
7348         nlmsg_free(msg);
7349         return -ENOBUFS;
7350 }
7351
7352 static const struct nla_policy
7353 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
7354         [NL80211_MESHCONF_RETRY_TIMEOUT] =
7355                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7356         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
7357                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7358         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
7359                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
7360         [NL80211_MESHCONF_MAX_PEER_LINKS] =
7361                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
7362         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
7363         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7364         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
7365         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
7366         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
7367                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
7368         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
7369         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
7370         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
7371         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
7372         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
7373                 NLA_POLICY_MIN(NLA_U16, 1),
7374         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
7375                 NLA_POLICY_MIN(NLA_U16, 1),
7376         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
7377                 NLA_POLICY_MIN(NLA_U16, 1),
7378         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
7379         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
7380                 NLA_POLICY_MIN(NLA_U16, 1),
7381         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
7382         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
7383         [NL80211_MESHCONF_RSSI_THRESHOLD] =
7384                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
7385         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
7386         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
7387         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
7388                 NLA_POLICY_MIN(NLA_U16, 1),
7389         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
7390                 NLA_POLICY_MIN(NLA_U16, 1),
7391         [NL80211_MESHCONF_POWER_MODE] =
7392                 NLA_POLICY_RANGE(NLA_U32,
7393                                  NL80211_MESH_POWER_ACTIVE,
7394                                  NL80211_MESH_POWER_MAX),
7395         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
7396         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
7397         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7398         [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7399         [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
7400 };
7401
7402 static const struct nla_policy
7403         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
7404         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
7405         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
7406         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
7407         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
7408         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
7409         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
7410         [NL80211_MESH_SETUP_IE] =
7411                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
7412                                        IEEE80211_MAX_DATA_LEN),
7413         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
7414 };
7415
7416 static int nl80211_parse_mesh_config(struct genl_info *info,
7417                                      struct mesh_config *cfg,
7418                                      u32 *mask_out)
7419 {
7420         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
7421         u32 mask = 0;
7422         u16 ht_opmode;
7423
7424 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
7425 do {                                                                    \
7426         if (tb[attr]) {                                                 \
7427                 cfg->param = fn(tb[attr]);                              \
7428                 mask |= BIT((attr) - 1);                                \
7429         }                                                               \
7430 } while (0)
7431
7432         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
7433                 return -EINVAL;
7434         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
7435                 return -EINVAL;
7436
7437         /* This makes sure that there aren't more than 32 mesh config
7438          * parameters (otherwise our bitfield scheme would not work.) */
7439         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
7440
7441         /* Fill in the params struct */
7442         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
7443                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
7444         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
7445                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
7446                                   nla_get_u16);
7447         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
7448                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
7449                                   nla_get_u16);
7450         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
7451                                   NL80211_MESHCONF_MAX_PEER_LINKS,
7452                                   nla_get_u16);
7453         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
7454                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
7455         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
7456                                   NL80211_MESHCONF_TTL, nla_get_u8);
7457         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
7458                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
7459         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
7460                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
7461                                   nla_get_u8);
7462         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
7463                                   mask,
7464                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
7465                                   nla_get_u32);
7466         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
7467                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
7468                                   nla_get_u8);
7469         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
7470                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
7471                                   nla_get_u32);
7472         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
7473             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
7474                 return -EINVAL;
7475         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
7476                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
7477                                   nla_get_u16);
7478         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
7479                                   mask,
7480                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
7481                                   nla_get_u32);
7482         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
7483             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
7484              cfg->dot11MeshHWMPactivePathTimeout > 65535))
7485                 return -EINVAL;
7486         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
7487                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
7488                                   nla_get_u16);
7489         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
7490                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
7491                                   nla_get_u16);
7492         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7493                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
7494                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
7495                                   nla_get_u16);
7496         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
7497                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
7498         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
7499                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
7500                                   nla_get_u16);
7501         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
7502                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
7503                                   nla_get_u8);
7504         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
7505                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
7506         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
7507                                   NL80211_MESHCONF_RSSI_THRESHOLD,
7508                                   nla_get_s32);
7509         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
7510                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
7511                                   nla_get_u8);
7512         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask,
7513                                   NL80211_MESHCONF_CONNECTED_TO_AS,
7514                                   nla_get_u8);
7515         /*
7516          * Check HT operation mode based on
7517          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
7518          */
7519         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
7520                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
7521
7522                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
7523                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
7524                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
7525                         return -EINVAL;
7526
7527                 /* NON_HT_STA bit is reserved, but some programs set it */
7528                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
7529
7530                 cfg->ht_opmode = ht_opmode;
7531                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
7532         }
7533         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
7534                                   dot11MeshHWMPactivePathToRootTimeout, mask,
7535                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
7536                                   nla_get_u32);
7537         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
7538             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
7539              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
7540                 return -EINVAL;
7541         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
7542                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
7543                                   nla_get_u16);
7544         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
7545                                   mask,
7546                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
7547                                   nla_get_u16);
7548         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
7549                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
7550         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
7551                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
7552         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
7553                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
7554         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask,
7555                                   NL80211_MESHCONF_NOLEARN, nla_get_u8);
7556         if (mask_out)
7557                 *mask_out = mask;
7558
7559         return 0;
7560
7561 #undef FILL_IN_MESH_PARAM_IF_SET
7562 }
7563
7564 static int nl80211_parse_mesh_setup(struct genl_info *info,
7565                                      struct mesh_setup *setup)
7566 {
7567         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7568         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
7569
7570         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
7571                 return -EINVAL;
7572         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
7573                 return -EINVAL;
7574
7575         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
7576                 setup->sync_method =
7577                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
7578                  IEEE80211_SYNC_METHOD_VENDOR :
7579                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
7580
7581         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
7582                 setup->path_sel_proto =
7583                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
7584                  IEEE80211_PATH_PROTOCOL_VENDOR :
7585                  IEEE80211_PATH_PROTOCOL_HWMP;
7586
7587         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
7588                 setup->path_metric =
7589                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
7590                  IEEE80211_PATH_METRIC_VENDOR :
7591                  IEEE80211_PATH_METRIC_AIRTIME;
7592
7593         if (tb[NL80211_MESH_SETUP_IE]) {
7594                 struct nlattr *ieattr =
7595                         tb[NL80211_MESH_SETUP_IE];
7596                 setup->ie = nla_data(ieattr);
7597                 setup->ie_len = nla_len(ieattr);
7598         }
7599         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
7600             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
7601                 return -EINVAL;
7602         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
7603         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
7604         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
7605         if (setup->is_secure)
7606                 setup->user_mpm = true;
7607
7608         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
7609                 if (!setup->user_mpm)
7610                         return -EINVAL;
7611                 setup->auth_id =
7612                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
7613         }
7614
7615         return 0;
7616 }
7617
7618 static int nl80211_update_mesh_config(struct sk_buff *skb,
7619                                       struct genl_info *info)
7620 {
7621         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7622         struct net_device *dev = info->user_ptr[1];
7623         struct wireless_dev *wdev = dev->ieee80211_ptr;
7624         struct mesh_config cfg;
7625         u32 mask;
7626         int err;
7627
7628         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
7629                 return -EOPNOTSUPP;
7630
7631         if (!rdev->ops->update_mesh_config)
7632                 return -EOPNOTSUPP;
7633
7634         err = nl80211_parse_mesh_config(info, &cfg, &mask);
7635         if (err)
7636                 return err;
7637
7638         wdev_lock(wdev);
7639         if (!wdev->mesh_id_len)
7640                 err = -ENOLINK;
7641
7642         if (!err)
7643                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
7644
7645         wdev_unlock(wdev);
7646
7647         return err;
7648 }
7649
7650 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
7651                               struct sk_buff *msg)
7652 {
7653         struct nlattr *nl_reg_rules;
7654         unsigned int i;
7655
7656         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
7657             (regdom->dfs_region &&
7658              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
7659                 goto nla_put_failure;
7660
7661         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
7662         if (!nl_reg_rules)
7663                 goto nla_put_failure;
7664
7665         for (i = 0; i < regdom->n_reg_rules; i++) {
7666                 struct nlattr *nl_reg_rule;
7667                 const struct ieee80211_reg_rule *reg_rule;
7668                 const struct ieee80211_freq_range *freq_range;
7669                 const struct ieee80211_power_rule *power_rule;
7670                 unsigned int max_bandwidth_khz;
7671
7672                 reg_rule = &regdom->reg_rules[i];
7673                 freq_range = &reg_rule->freq_range;
7674                 power_rule = &reg_rule->power_rule;
7675
7676                 nl_reg_rule = nla_nest_start_noflag(msg, i);
7677                 if (!nl_reg_rule)
7678                         goto nla_put_failure;
7679
7680                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
7681                 if (!max_bandwidth_khz)
7682                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
7683                                                                   reg_rule);
7684
7685                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
7686                                 reg_rule->flags) ||
7687                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
7688                                 freq_range->start_freq_khz) ||
7689                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
7690                                 freq_range->end_freq_khz) ||
7691                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
7692                                 max_bandwidth_khz) ||
7693                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
7694                                 power_rule->max_antenna_gain) ||
7695                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
7696                                 power_rule->max_eirp) ||
7697                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
7698                                 reg_rule->dfs_cac_ms))
7699                         goto nla_put_failure;
7700
7701                 nla_nest_end(msg, nl_reg_rule);
7702         }
7703
7704         nla_nest_end(msg, nl_reg_rules);
7705         return 0;
7706
7707 nla_put_failure:
7708         return -EMSGSIZE;
7709 }
7710
7711 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7712 {
7713         const struct ieee80211_regdomain *regdom = NULL;
7714         struct cfg80211_registered_device *rdev;
7715         struct wiphy *wiphy = NULL;
7716         struct sk_buff *msg;
7717         void *hdr;
7718
7719         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7720         if (!msg)
7721                 return -ENOBUFS;
7722
7723         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7724                              NL80211_CMD_GET_REG);
7725         if (!hdr)
7726                 goto put_failure;
7727
7728         rtnl_lock();
7729
7730         if (info->attrs[NL80211_ATTR_WIPHY]) {
7731                 bool self_managed;
7732
7733                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7734                 if (IS_ERR(rdev)) {
7735                         nlmsg_free(msg);
7736                         rtnl_unlock();
7737                         return PTR_ERR(rdev);
7738                 }
7739
7740                 wiphy = &rdev->wiphy;
7741                 self_managed = wiphy->regulatory_flags &
7742                                REGULATORY_WIPHY_SELF_MANAGED;
7743                 regdom = get_wiphy_regdom(wiphy);
7744
7745                 /* a self-managed-reg device must have a private regdom */
7746                 if (WARN_ON(!regdom && self_managed)) {
7747                         nlmsg_free(msg);
7748                         rtnl_unlock();
7749                         return -EINVAL;
7750                 }
7751
7752                 if (regdom &&
7753                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7754                         goto nla_put_failure;
7755         }
7756
7757         if (!wiphy && reg_last_request_cell_base() &&
7758             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7759                         NL80211_USER_REG_HINT_CELL_BASE))
7760                 goto nla_put_failure;
7761
7762         rcu_read_lock();
7763
7764         if (!regdom)
7765                 regdom = rcu_dereference(cfg80211_regdomain);
7766
7767         if (nl80211_put_regdom(regdom, msg))
7768                 goto nla_put_failure_rcu;
7769
7770         rcu_read_unlock();
7771
7772         genlmsg_end(msg, hdr);
7773         rtnl_unlock();
7774         return genlmsg_reply(msg, info);
7775
7776 nla_put_failure_rcu:
7777         rcu_read_unlock();
7778 nla_put_failure:
7779         rtnl_unlock();
7780 put_failure:
7781         nlmsg_free(msg);
7782         return -EMSGSIZE;
7783 }
7784
7785 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7786                                u32 seq, int flags, struct wiphy *wiphy,
7787                                const struct ieee80211_regdomain *regdom)
7788 {
7789         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7790                                    NL80211_CMD_GET_REG);
7791
7792         if (!hdr)
7793                 return -1;
7794
7795         genl_dump_check_consistent(cb, hdr);
7796
7797         if (nl80211_put_regdom(regdom, msg))
7798                 goto nla_put_failure;
7799
7800         if (!wiphy && reg_last_request_cell_base() &&
7801             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7802                         NL80211_USER_REG_HINT_CELL_BASE))
7803                 goto nla_put_failure;
7804
7805         if (wiphy &&
7806             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7807                 goto nla_put_failure;
7808
7809         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7810             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7811                 goto nla_put_failure;
7812
7813         genlmsg_end(msg, hdr);
7814         return 0;
7815
7816 nla_put_failure:
7817         genlmsg_cancel(msg, hdr);
7818         return -EMSGSIZE;
7819 }
7820
7821 static int nl80211_get_reg_dump(struct sk_buff *skb,
7822                                 struct netlink_callback *cb)
7823 {
7824         const struct ieee80211_regdomain *regdom = NULL;
7825         struct cfg80211_registered_device *rdev;
7826         int err, reg_idx, start = cb->args[2];
7827
7828         rtnl_lock();
7829
7830         if (cfg80211_regdomain && start == 0) {
7831                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7832                                           NLM_F_MULTI, NULL,
7833                                           rtnl_dereference(cfg80211_regdomain));
7834                 if (err < 0)
7835                         goto out_err;
7836         }
7837
7838         /* the global regdom is idx 0 */
7839         reg_idx = 1;
7840         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7841                 regdom = get_wiphy_regdom(&rdev->wiphy);
7842                 if (!regdom)
7843                         continue;
7844
7845                 if (++reg_idx <= start)
7846                         continue;
7847
7848                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7849                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7850                 if (err < 0) {
7851                         reg_idx--;
7852                         break;
7853                 }
7854         }
7855
7856         cb->args[2] = reg_idx;
7857         err = skb->len;
7858 out_err:
7859         rtnl_unlock();
7860         return err;
7861 }
7862
7863 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7864 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7865         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7866         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7867         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7868         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7869         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7870         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7871         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7872 };
7873
7874 static int parse_reg_rule(struct nlattr *tb[],
7875         struct ieee80211_reg_rule *reg_rule)
7876 {
7877         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7878         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7879
7880         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7881                 return -EINVAL;
7882         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7883                 return -EINVAL;
7884         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7885                 return -EINVAL;
7886         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7887                 return -EINVAL;
7888         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7889                 return -EINVAL;
7890
7891         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7892
7893         freq_range->start_freq_khz =
7894                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7895         freq_range->end_freq_khz =
7896                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7897         freq_range->max_bandwidth_khz =
7898                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7899
7900         power_rule->max_eirp =
7901                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7902
7903         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7904                 power_rule->max_antenna_gain =
7905                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7906
7907         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7908                 reg_rule->dfs_cac_ms =
7909                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7910
7911         return 0;
7912 }
7913
7914 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7915 {
7916         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7917         struct nlattr *nl_reg_rule;
7918         char *alpha2;
7919         int rem_reg_rules, r;
7920         u32 num_rules = 0, rule_idx = 0;
7921         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7922         struct ieee80211_regdomain *rd;
7923
7924         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7925                 return -EINVAL;
7926
7927         if (!info->attrs[NL80211_ATTR_REG_RULES])
7928                 return -EINVAL;
7929
7930         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7931
7932         if (info->attrs[NL80211_ATTR_DFS_REGION])
7933                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7934
7935         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7936                             rem_reg_rules) {
7937                 num_rules++;
7938                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7939                         return -EINVAL;
7940         }
7941
7942         rtnl_lock();
7943         if (!reg_is_valid_request(alpha2)) {
7944                 r = -EINVAL;
7945                 goto out;
7946         }
7947
7948         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7949         if (!rd) {
7950                 r = -ENOMEM;
7951                 goto out;
7952         }
7953
7954         rd->n_reg_rules = num_rules;
7955         rd->alpha2[0] = alpha2[0];
7956         rd->alpha2[1] = alpha2[1];
7957
7958         /*
7959          * Disable DFS master mode if the DFS region was
7960          * not supported or known on this kernel.
7961          */
7962         if (reg_supported_dfs_region(dfs_region))
7963                 rd->dfs_region = dfs_region;
7964
7965         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7966                             rem_reg_rules) {
7967                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7968                                                 nl_reg_rule, reg_rule_policy,
7969                                                 info->extack);
7970                 if (r)
7971                         goto bad_reg;
7972                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7973                 if (r)
7974                         goto bad_reg;
7975
7976                 rule_idx++;
7977
7978                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7979                         r = -EINVAL;
7980                         goto bad_reg;
7981                 }
7982         }
7983
7984         r = set_regdom(rd, REGD_SOURCE_CRDA);
7985         /* set_regdom takes ownership of rd */
7986         rd = NULL;
7987  bad_reg:
7988         kfree(rd);
7989  out:
7990         rtnl_unlock();
7991         return r;
7992 }
7993 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7994
7995 static int validate_scan_freqs(struct nlattr *freqs)
7996 {
7997         struct nlattr *attr1, *attr2;
7998         int n_channels = 0, tmp1, tmp2;
7999
8000         nla_for_each_nested(attr1, freqs, tmp1)
8001                 if (nla_len(attr1) != sizeof(u32))
8002                         return 0;
8003
8004         nla_for_each_nested(attr1, freqs, tmp1) {
8005                 n_channels++;
8006                 /*
8007                  * Some hardware has a limited channel list for
8008                  * scanning, and it is pretty much nonsensical
8009                  * to scan for a channel twice, so disallow that
8010                  * and don't require drivers to check that the
8011                  * channel list they get isn't longer than what
8012                  * they can scan, as long as they can scan all
8013                  * the channels they registered at once.
8014                  */
8015                 nla_for_each_nested(attr2, freqs, tmp2)
8016                         if (attr1 != attr2 &&
8017                             nla_get_u32(attr1) == nla_get_u32(attr2))
8018                                 return 0;
8019         }
8020
8021         return n_channels;
8022 }
8023
8024 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
8025 {
8026         return b < NUM_NL80211_BANDS && wiphy->bands[b];
8027 }
8028
8029 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
8030                             struct cfg80211_bss_selection *bss_select)
8031 {
8032         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
8033         struct nlattr *nest;
8034         int err;
8035         bool found = false;
8036         int i;
8037
8038         /* only process one nested attribute */
8039         nest = nla_data(nla);
8040         if (!nla_ok(nest, nla_len(nest)))
8041                 return -EINVAL;
8042
8043         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
8044                                           nest, nl80211_bss_select_policy,
8045                                           NULL);
8046         if (err)
8047                 return err;
8048
8049         /* only one attribute may be given */
8050         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
8051                 if (attr[i]) {
8052                         if (found)
8053                                 return -EINVAL;
8054                         found = true;
8055                 }
8056         }
8057
8058         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
8059
8060         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
8061                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
8062
8063         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
8064                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
8065                 bss_select->param.band_pref =
8066                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
8067                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
8068                         return -EINVAL;
8069         }
8070
8071         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
8072                 struct nl80211_bss_select_rssi_adjust *adj_param;
8073
8074                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
8075                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
8076                 bss_select->param.adjust.band = adj_param->band;
8077                 bss_select->param.adjust.delta = adj_param->delta;
8078                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
8079                         return -EINVAL;
8080         }
8081
8082         /* user-space did not provide behaviour attribute */
8083         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
8084                 return -EINVAL;
8085
8086         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
8087                 return -EINVAL;
8088
8089         return 0;
8090 }
8091
8092 int nl80211_parse_random_mac(struct nlattr **attrs,
8093                              u8 *mac_addr, u8 *mac_addr_mask)
8094 {
8095         int i;
8096
8097         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
8098                 eth_zero_addr(mac_addr);
8099                 eth_zero_addr(mac_addr_mask);
8100                 mac_addr[0] = 0x2;
8101                 mac_addr_mask[0] = 0x3;
8102
8103                 return 0;
8104         }
8105
8106         /* need both or none */
8107         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
8108                 return -EINVAL;
8109
8110         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
8111         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
8112
8113         /* don't allow or configure an mcast address */
8114         if (!is_multicast_ether_addr(mac_addr_mask) ||
8115             is_multicast_ether_addr(mac_addr))
8116                 return -EINVAL;
8117
8118         /*
8119          * allow users to pass a MAC address that has bits set outside
8120          * of the mask, but don't bother drivers with having to deal
8121          * with such bits
8122          */
8123         for (i = 0; i < ETH_ALEN; i++)
8124                 mac_addr[i] &= mac_addr_mask[i];
8125
8126         return 0;
8127 }
8128
8129 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
8130 {
8131         ASSERT_WDEV_LOCK(wdev);
8132
8133         if (!cfg80211_beaconing_iface_active(wdev))
8134                 return true;
8135
8136         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
8137                 return true;
8138
8139         return regulatory_pre_cac_allowed(wdev->wiphy);
8140 }
8141
8142 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
8143                                     enum nl80211_ext_feature_index feat)
8144 {
8145         if (!(flags & flag))
8146                 return true;
8147         if (wiphy_ext_feature_isset(wiphy, feat))
8148                 return true;
8149         return false;
8150 }
8151
8152 static int
8153 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
8154                          void *request, struct nlattr **attrs,
8155                          bool is_sched_scan)
8156 {
8157         u8 *mac_addr, *mac_addr_mask;
8158         u32 *flags;
8159         enum nl80211_feature_flags randomness_flag;
8160
8161         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
8162                 return 0;
8163
8164         if (is_sched_scan) {
8165                 struct cfg80211_sched_scan_request *req = request;
8166
8167                 randomness_flag = wdev ?
8168                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
8169                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
8170                 flags = &req->flags;
8171                 mac_addr = req->mac_addr;
8172                 mac_addr_mask = req->mac_addr_mask;
8173         } else {
8174                 struct cfg80211_scan_request *req = request;
8175
8176                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
8177                 flags = &req->flags;
8178                 mac_addr = req->mac_addr;
8179                 mac_addr_mask = req->mac_addr_mask;
8180         }
8181
8182         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
8183
8184         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
8185              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
8186             !nl80211_check_scan_feat(wiphy, *flags,
8187                                      NL80211_SCAN_FLAG_LOW_SPAN,
8188                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
8189             !nl80211_check_scan_feat(wiphy, *flags,
8190                                      NL80211_SCAN_FLAG_LOW_POWER,
8191                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
8192             !nl80211_check_scan_feat(wiphy, *flags,
8193                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
8194                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
8195             !nl80211_check_scan_feat(wiphy, *flags,
8196                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
8197                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
8198             !nl80211_check_scan_feat(wiphy, *flags,
8199                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
8200                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
8201             !nl80211_check_scan_feat(wiphy, *flags,
8202                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
8203                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
8204             !nl80211_check_scan_feat(wiphy, *flags,
8205                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
8206                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
8207             !nl80211_check_scan_feat(wiphy, *flags,
8208                                      NL80211_SCAN_FLAG_RANDOM_SN,
8209                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
8210             !nl80211_check_scan_feat(wiphy, *flags,
8211                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
8212                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
8213                 return -EOPNOTSUPP;
8214
8215         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
8216                 int err;
8217
8218                 if (!(wiphy->features & randomness_flag) ||
8219                     (wdev && wdev->current_bss))
8220                         return -EOPNOTSUPP;
8221
8222                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
8223                 if (err)
8224                         return err;
8225         }
8226
8227         return 0;
8228 }
8229
8230 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
8231 {
8232         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8233         struct wireless_dev *wdev = info->user_ptr[1];
8234         struct cfg80211_scan_request *request;
8235         struct nlattr *scan_freqs = NULL;
8236         bool scan_freqs_khz = false;
8237         struct nlattr *attr;
8238         struct wiphy *wiphy;
8239         int err, tmp, n_ssids = 0, n_channels, i;
8240         size_t ie_len;
8241
8242         wiphy = &rdev->wiphy;
8243
8244         if (wdev->iftype == NL80211_IFTYPE_NAN)
8245                 return -EOPNOTSUPP;
8246
8247         if (!rdev->ops->scan)
8248                 return -EOPNOTSUPP;
8249
8250         if (rdev->scan_req || rdev->scan_msg)
8251                 return -EBUSY;
8252
8253         if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) {
8254                 if (!wiphy_ext_feature_isset(wiphy,
8255                                              NL80211_EXT_FEATURE_SCAN_FREQ_KHZ))
8256                         return -EOPNOTSUPP;
8257                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ];
8258                 scan_freqs_khz = true;
8259         } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES])
8260                 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES];
8261
8262         if (scan_freqs) {
8263                 n_channels = validate_scan_freqs(scan_freqs);
8264                 if (!n_channels)
8265                         return -EINVAL;
8266         } else {
8267                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8268         }
8269
8270         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
8271                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
8272                         n_ssids++;
8273
8274         if (n_ssids > wiphy->max_scan_ssids)
8275                 return -EINVAL;
8276
8277         if (info->attrs[NL80211_ATTR_IE])
8278                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8279         else
8280                 ie_len = 0;
8281
8282         if (ie_len > wiphy->max_scan_ie_len)
8283                 return -EINVAL;
8284
8285         request = kzalloc(sizeof(*request)
8286                         + sizeof(*request->ssids) * n_ssids
8287                         + sizeof(*request->channels) * n_channels
8288                         + ie_len, GFP_KERNEL);
8289         if (!request)
8290                 return -ENOMEM;
8291
8292         if (n_ssids)
8293                 request->ssids = (void *)&request->channels[n_channels];
8294         request->n_ssids = n_ssids;
8295         if (ie_len) {
8296                 if (n_ssids)
8297                         request->ie = (void *)(request->ssids + n_ssids);
8298                 else
8299                         request->ie = (void *)(request->channels + n_channels);
8300         }
8301
8302         i = 0;
8303         if (scan_freqs) {
8304                 /* user specified, bail out if channel not found */
8305                 nla_for_each_nested(attr, scan_freqs, tmp) {
8306                         struct ieee80211_channel *chan;
8307                         int freq = nla_get_u32(attr);
8308
8309                         if (!scan_freqs_khz)
8310                                 freq = MHZ_TO_KHZ(freq);
8311
8312                         chan = ieee80211_get_channel_khz(wiphy, freq);
8313                         if (!chan) {
8314                                 err = -EINVAL;
8315                                 goto out_free;
8316                         }
8317
8318                         /* ignore disabled channels */
8319                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8320                                 continue;
8321
8322                         request->channels[i] = chan;
8323                         i++;
8324                 }
8325         } else {
8326                 enum nl80211_band band;
8327
8328                 /* all channels */
8329                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8330                         int j;
8331
8332                         if (!wiphy->bands[band])
8333                                 continue;
8334                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8335                                 struct ieee80211_channel *chan;
8336
8337                                 chan = &wiphy->bands[band]->channels[j];
8338
8339                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8340                                         continue;
8341
8342                                 request->channels[i] = chan;
8343                                 i++;
8344                         }
8345                 }
8346         }
8347
8348         if (!i) {
8349                 err = -EINVAL;
8350                 goto out_free;
8351         }
8352
8353         request->n_channels = i;
8354
8355         wdev_lock(wdev);
8356         if (!cfg80211_off_channel_oper_allowed(wdev)) {
8357                 struct ieee80211_channel *chan;
8358
8359                 if (request->n_channels != 1) {
8360                         wdev_unlock(wdev);
8361                         err = -EBUSY;
8362                         goto out_free;
8363                 }
8364
8365                 chan = request->channels[0];
8366                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
8367                         wdev_unlock(wdev);
8368                         err = -EBUSY;
8369                         goto out_free;
8370                 }
8371         }
8372         wdev_unlock(wdev);
8373
8374         i = 0;
8375         if (n_ssids) {
8376                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
8377                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8378                                 err = -EINVAL;
8379                                 goto out_free;
8380                         }
8381                         request->ssids[i].ssid_len = nla_len(attr);
8382                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
8383                         i++;
8384                 }
8385         }
8386
8387         if (info->attrs[NL80211_ATTR_IE]) {
8388                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
8389                 memcpy((void *)request->ie,
8390                        nla_data(info->attrs[NL80211_ATTR_IE]),
8391                        request->ie_len);
8392         }
8393
8394         for (i = 0; i < NUM_NL80211_BANDS; i++)
8395                 if (wiphy->bands[i])
8396                         request->rates[i] =
8397                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
8398
8399         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
8400                 nla_for_each_nested(attr,
8401                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
8402                                     tmp) {
8403                         enum nl80211_band band = nla_type(attr);
8404
8405                         if (band < 0 || band >= NUM_NL80211_BANDS) {
8406                                 err = -EINVAL;
8407                                 goto out_free;
8408                         }
8409
8410                         if (!wiphy->bands[band])
8411                                 continue;
8412
8413                         err = ieee80211_get_ratemask(wiphy->bands[band],
8414                                                      nla_data(attr),
8415                                                      nla_len(attr),
8416                                                      &request->rates[band]);
8417                         if (err)
8418                                 goto out_free;
8419                 }
8420         }
8421
8422         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
8423                 request->duration =
8424                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
8425                 request->duration_mandatory =
8426                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
8427         }
8428
8429         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
8430                                        false);
8431         if (err)
8432                 goto out_free;
8433
8434         request->no_cck =
8435                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
8436
8437         /* Initial implementation used NL80211_ATTR_MAC to set the specific
8438          * BSSID to scan for. This was problematic because that same attribute
8439          * was already used for another purpose (local random MAC address). The
8440          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
8441          * compatibility with older userspace components, also use the
8442          * NL80211_ATTR_MAC value here if it can be determined to be used for
8443          * the specific BSSID use case instead of the random MAC address
8444          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
8445          */
8446         if (info->attrs[NL80211_ATTR_BSSID])
8447                 memcpy(request->bssid,
8448                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
8449         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
8450                  info->attrs[NL80211_ATTR_MAC])
8451                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
8452                        ETH_ALEN);
8453         else
8454                 eth_broadcast_addr(request->bssid);
8455
8456         request->wdev = wdev;
8457         request->wiphy = &rdev->wiphy;
8458         request->scan_start = jiffies;
8459
8460         rdev->scan_req = request;
8461         err = cfg80211_scan(rdev);
8462
8463         if (err)
8464                 goto out_free;
8465
8466         nl80211_send_scan_start(rdev, wdev);
8467         if (wdev->netdev)
8468                 dev_hold(wdev->netdev);
8469
8470         return 0;
8471
8472  out_free:
8473         rdev->scan_req = NULL;
8474         kfree(request);
8475
8476         return err;
8477 }
8478
8479 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
8480 {
8481         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8482         struct wireless_dev *wdev = info->user_ptr[1];
8483
8484         if (!rdev->ops->abort_scan)
8485                 return -EOPNOTSUPP;
8486
8487         if (rdev->scan_msg)
8488                 return 0;
8489
8490         if (!rdev->scan_req)
8491                 return -ENOENT;
8492
8493         rdev_abort_scan(rdev, wdev);
8494         return 0;
8495 }
8496
8497 static int
8498 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
8499                                struct cfg80211_sched_scan_request *request,
8500                                struct nlattr **attrs)
8501 {
8502         int tmp, err, i = 0;
8503         struct nlattr *attr;
8504
8505         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8506                 u32 interval;
8507
8508                 /*
8509                  * If scan plans are not specified,
8510                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
8511                  * case one scan plan will be set with the specified scan
8512                  * interval and infinite number of iterations.
8513                  */
8514                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
8515                 if (!interval)
8516                         return -EINVAL;
8517
8518                 request->scan_plans[0].interval =
8519                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
8520                 if (!request->scan_plans[0].interval)
8521                         return -EINVAL;
8522
8523                 if (request->scan_plans[0].interval >
8524                     wiphy->max_sched_scan_plan_interval)
8525                         request->scan_plans[0].interval =
8526                                 wiphy->max_sched_scan_plan_interval;
8527
8528                 return 0;
8529         }
8530
8531         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
8532                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
8533
8534                 if (WARN_ON(i >= n_plans))
8535                         return -EINVAL;
8536
8537                 err = nla_parse_nested_deprecated(plan,
8538                                                   NL80211_SCHED_SCAN_PLAN_MAX,
8539                                                   attr, nl80211_plan_policy,
8540                                                   NULL);
8541                 if (err)
8542                         return err;
8543
8544                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
8545                         return -EINVAL;
8546
8547                 request->scan_plans[i].interval =
8548                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
8549                 if (!request->scan_plans[i].interval ||
8550                     request->scan_plans[i].interval >
8551                     wiphy->max_sched_scan_plan_interval)
8552                         return -EINVAL;
8553
8554                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
8555                         request->scan_plans[i].iterations =
8556                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
8557                         if (!request->scan_plans[i].iterations ||
8558                             (request->scan_plans[i].iterations >
8559                              wiphy->max_sched_scan_plan_iterations))
8560                                 return -EINVAL;
8561                 } else if (i < n_plans - 1) {
8562                         /*
8563                          * All scan plans but the last one must specify
8564                          * a finite number of iterations
8565                          */
8566                         return -EINVAL;
8567                 }
8568
8569                 i++;
8570         }
8571
8572         /*
8573          * The last scan plan must not specify the number of
8574          * iterations, it is supposed to run infinitely
8575          */
8576         if (request->scan_plans[n_plans - 1].iterations)
8577                 return  -EINVAL;
8578
8579         return 0;
8580 }
8581
8582 static int
8583 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
8584                                        struct cfg80211_match_set *match_sets,
8585                                        struct nlattr *tb_band_rssi,
8586                                        s32 rssi_thold)
8587 {
8588         struct nlattr *attr;
8589         int i, tmp, ret = 0;
8590
8591         if (!wiphy_ext_feature_isset(wiphy,
8592                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
8593                 if (tb_band_rssi)
8594                         ret = -EOPNOTSUPP;
8595                 else
8596                         for (i = 0; i < NUM_NL80211_BANDS; i++)
8597                                 match_sets->per_band_rssi_thold[i] =
8598                                         NL80211_SCAN_RSSI_THOLD_OFF;
8599                 return ret;
8600         }
8601
8602         for (i = 0; i < NUM_NL80211_BANDS; i++)
8603                 match_sets->per_band_rssi_thold[i] = rssi_thold;
8604
8605         nla_for_each_nested(attr, tb_band_rssi, tmp) {
8606                 enum nl80211_band band = nla_type(attr);
8607
8608                 if (band < 0 || band >= NUM_NL80211_BANDS)
8609                         return -EINVAL;
8610
8611                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
8612         }
8613
8614         return 0;
8615 }
8616
8617 static struct cfg80211_sched_scan_request *
8618 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
8619                          struct nlattr **attrs, int max_match_sets)
8620 {
8621         struct cfg80211_sched_scan_request *request;
8622         struct nlattr *attr;
8623         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
8624         enum nl80211_band band;
8625         size_t ie_len;
8626         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
8627         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
8628
8629         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8630                 n_channels = validate_scan_freqs(
8631                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
8632                 if (!n_channels)
8633                         return ERR_PTR(-EINVAL);
8634         } else {
8635                 n_channels = ieee80211_get_num_supported_channels(wiphy);
8636         }
8637
8638         if (attrs[NL80211_ATTR_SCAN_SSIDS])
8639                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8640                                     tmp)
8641                         n_ssids++;
8642
8643         if (n_ssids > wiphy->max_sched_scan_ssids)
8644                 return ERR_PTR(-EINVAL);
8645
8646         /*
8647          * First, count the number of 'real' matchsets. Due to an issue with
8648          * the old implementation, matchsets containing only the RSSI attribute
8649          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
8650          * RSSI for all matchsets, rather than their own matchset for reporting
8651          * all APs with a strong RSSI. This is needed to be compatible with
8652          * older userspace that treated a matchset with only the RSSI as the
8653          * global RSSI for all other matchsets - if there are other matchsets.
8654          */
8655         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8656                 nla_for_each_nested(attr,
8657                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8658                                     tmp) {
8659                         struct nlattr *rssi;
8660
8661                         err = nla_parse_nested_deprecated(tb,
8662                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8663                                                           attr,
8664                                                           nl80211_match_policy,
8665                                                           NULL);
8666                         if (err)
8667                                 return ERR_PTR(err);
8668
8669                         /* SSID and BSSID are mutually exclusive */
8670                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
8671                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
8672                                 return ERR_PTR(-EINVAL);
8673
8674                         /* add other standalone attributes here */
8675                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
8676                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
8677                                 n_match_sets++;
8678                                 continue;
8679                         }
8680                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8681                         if (rssi)
8682                                 default_match_rssi = nla_get_s32(rssi);
8683                 }
8684         }
8685
8686         /* However, if there's no other matchset, add the RSSI one */
8687         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
8688                 n_match_sets = 1;
8689
8690         if (n_match_sets > max_match_sets)
8691                 return ERR_PTR(-EINVAL);
8692
8693         if (attrs[NL80211_ATTR_IE])
8694                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
8695         else
8696                 ie_len = 0;
8697
8698         if (ie_len > wiphy->max_sched_scan_ie_len)
8699                 return ERR_PTR(-EINVAL);
8700
8701         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
8702                 /*
8703                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
8704                  * each scan plan already specifies its own interval
8705                  */
8706                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8707                         return ERR_PTR(-EINVAL);
8708
8709                 nla_for_each_nested(attr,
8710                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
8711                         n_plans++;
8712         } else {
8713                 /*
8714                  * The scan interval attribute is kept for backward
8715                  * compatibility. If no scan plans are specified and sched scan
8716                  * interval is specified, one scan plan will be set with this
8717                  * scan interval and infinite number of iterations.
8718                  */
8719                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8720                         return ERR_PTR(-EINVAL);
8721
8722                 n_plans = 1;
8723         }
8724
8725         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8726                 return ERR_PTR(-EINVAL);
8727
8728         if (!wiphy_ext_feature_isset(
8729                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8730             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8731              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8732                 return ERR_PTR(-EINVAL);
8733
8734         request = kzalloc(sizeof(*request)
8735                         + sizeof(*request->ssids) * n_ssids
8736                         + sizeof(*request->match_sets) * n_match_sets
8737                         + sizeof(*request->scan_plans) * n_plans
8738                         + sizeof(*request->channels) * n_channels
8739                         + ie_len, GFP_KERNEL);
8740         if (!request)
8741                 return ERR_PTR(-ENOMEM);
8742
8743         if (n_ssids)
8744                 request->ssids = (void *)&request->channels[n_channels];
8745         request->n_ssids = n_ssids;
8746         if (ie_len) {
8747                 if (n_ssids)
8748                         request->ie = (void *)(request->ssids + n_ssids);
8749                 else
8750                         request->ie = (void *)(request->channels + n_channels);
8751         }
8752
8753         if (n_match_sets) {
8754                 if (request->ie)
8755                         request->match_sets = (void *)(request->ie + ie_len);
8756                 else if (n_ssids)
8757                         request->match_sets =
8758                                 (void *)(request->ssids + n_ssids);
8759                 else
8760                         request->match_sets =
8761                                 (void *)(request->channels + n_channels);
8762         }
8763         request->n_match_sets = n_match_sets;
8764
8765         if (n_match_sets)
8766                 request->scan_plans = (void *)(request->match_sets +
8767                                                n_match_sets);
8768         else if (request->ie)
8769                 request->scan_plans = (void *)(request->ie + ie_len);
8770         else if (n_ssids)
8771                 request->scan_plans = (void *)(request->ssids + n_ssids);
8772         else
8773                 request->scan_plans = (void *)(request->channels + n_channels);
8774
8775         request->n_scan_plans = n_plans;
8776
8777         i = 0;
8778         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8779                 /* user specified, bail out if channel not found */
8780                 nla_for_each_nested(attr,
8781                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8782                                     tmp) {
8783                         struct ieee80211_channel *chan;
8784
8785                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8786
8787                         if (!chan) {
8788                                 err = -EINVAL;
8789                                 goto out_free;
8790                         }
8791
8792                         /* ignore disabled channels */
8793                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8794                                 continue;
8795
8796                         request->channels[i] = chan;
8797                         i++;
8798                 }
8799         } else {
8800                 /* all channels */
8801                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8802                         int j;
8803
8804                         if (!wiphy->bands[band])
8805                                 continue;
8806                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8807                                 struct ieee80211_channel *chan;
8808
8809                                 chan = &wiphy->bands[band]->channels[j];
8810
8811                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8812                                         continue;
8813
8814                                 request->channels[i] = chan;
8815                                 i++;
8816                         }
8817                 }
8818         }
8819
8820         if (!i) {
8821                 err = -EINVAL;
8822                 goto out_free;
8823         }
8824
8825         request->n_channels = i;
8826
8827         i = 0;
8828         if (n_ssids) {
8829                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8830                                     tmp) {
8831                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8832                                 err = -EINVAL;
8833                                 goto out_free;
8834                         }
8835                         request->ssids[i].ssid_len = nla_len(attr);
8836                         memcpy(request->ssids[i].ssid, nla_data(attr),
8837                                nla_len(attr));
8838                         i++;
8839                 }
8840         }
8841
8842         i = 0;
8843         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8844                 nla_for_each_nested(attr,
8845                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8846                                     tmp) {
8847                         struct nlattr *ssid, *bssid, *rssi;
8848
8849                         err = nla_parse_nested_deprecated(tb,
8850                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8851                                                           attr,
8852                                                           nl80211_match_policy,
8853                                                           NULL);
8854                         if (err)
8855                                 goto out_free;
8856                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8857                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8858
8859                         if (!ssid && !bssid) {
8860                                 i++;
8861                                 continue;
8862                         }
8863
8864                         if (WARN_ON(i >= n_match_sets)) {
8865                                 /* this indicates a programming error,
8866                                  * the loop above should have verified
8867                                  * things properly
8868                                  */
8869                                 err = -EINVAL;
8870                                 goto out_free;
8871                         }
8872
8873                         if (ssid) {
8874                                 memcpy(request->match_sets[i].ssid.ssid,
8875                                        nla_data(ssid), nla_len(ssid));
8876                                 request->match_sets[i].ssid.ssid_len =
8877                                         nla_len(ssid);
8878                         }
8879                         if (bssid)
8880                                 memcpy(request->match_sets[i].bssid,
8881                                        nla_data(bssid), ETH_ALEN);
8882
8883                         /* special attribute - old implementation w/a */
8884                         request->match_sets[i].rssi_thold = default_match_rssi;
8885                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8886                         if (rssi)
8887                                 request->match_sets[i].rssi_thold =
8888                                         nla_get_s32(rssi);
8889
8890                         /* Parse per band RSSI attribute */
8891                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8892                                 &request->match_sets[i],
8893                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8894                                 request->match_sets[i].rssi_thold);
8895                         if (err)
8896                                 goto out_free;
8897
8898                         i++;
8899                 }
8900
8901                 /* there was no other matchset, so the RSSI one is alone */
8902                 if (i == 0 && n_match_sets)
8903                         request->match_sets[0].rssi_thold = default_match_rssi;
8904
8905                 request->min_rssi_thold = INT_MAX;
8906                 for (i = 0; i < n_match_sets; i++)
8907                         request->min_rssi_thold =
8908                                 min(request->match_sets[i].rssi_thold,
8909                                     request->min_rssi_thold);
8910         } else {
8911                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8912         }
8913
8914         if (ie_len) {
8915                 request->ie_len = ie_len;
8916                 memcpy((void *)request->ie,
8917                        nla_data(attrs[NL80211_ATTR_IE]),
8918                        request->ie_len);
8919         }
8920
8921         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8922         if (err)
8923                 goto out_free;
8924
8925         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8926                 request->delay =
8927                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8928
8929         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8930                 request->relative_rssi = nla_get_s8(
8931                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8932                 request->relative_rssi_set = true;
8933         }
8934
8935         if (request->relative_rssi_set &&
8936             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8937                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8938
8939                 rssi_adjust = nla_data(
8940                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8941                 request->rssi_adjust.band = rssi_adjust->band;
8942                 request->rssi_adjust.delta = rssi_adjust->delta;
8943                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8944                         err = -EINVAL;
8945                         goto out_free;
8946                 }
8947         }
8948
8949         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8950         if (err)
8951                 goto out_free;
8952
8953         request->scan_start = jiffies;
8954
8955         return request;
8956
8957 out_free:
8958         kfree(request);
8959         return ERR_PTR(err);
8960 }
8961
8962 static int nl80211_start_sched_scan(struct sk_buff *skb,
8963                                     struct genl_info *info)
8964 {
8965         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8966         struct net_device *dev = info->user_ptr[1];
8967         struct wireless_dev *wdev = dev->ieee80211_ptr;
8968         struct cfg80211_sched_scan_request *sched_scan_req;
8969         bool want_multi;
8970         int err;
8971
8972         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8973                 return -EOPNOTSUPP;
8974
8975         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8976         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8977         if (err)
8978                 return err;
8979
8980         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8981                                                   info->attrs,
8982                                                   rdev->wiphy.max_match_sets);
8983
8984         err = PTR_ERR_OR_ZERO(sched_scan_req);
8985         if (err)
8986                 goto out_err;
8987
8988         /* leave request id zero for legacy request
8989          * or if driver does not support multi-scheduled scan
8990          */
8991         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8992                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8993
8994         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8995         if (err)
8996                 goto out_free;
8997
8998         sched_scan_req->dev = dev;
8999         sched_scan_req->wiphy = &rdev->wiphy;
9000
9001         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9002                 sched_scan_req->owner_nlportid = info->snd_portid;
9003
9004         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
9005
9006         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
9007         return 0;
9008
9009 out_free:
9010         kfree(sched_scan_req);
9011 out_err:
9012         return err;
9013 }
9014
9015 static int nl80211_stop_sched_scan(struct sk_buff *skb,
9016                                    struct genl_info *info)
9017 {
9018         struct cfg80211_sched_scan_request *req;
9019         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9020         u64 cookie;
9021
9022         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
9023                 return -EOPNOTSUPP;
9024
9025         if (info->attrs[NL80211_ATTR_COOKIE]) {
9026                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
9027                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
9028         }
9029
9030         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
9031                                      struct cfg80211_sched_scan_request,
9032                                      list);
9033         if (!req || req->reqid ||
9034             (req->owner_nlportid &&
9035              req->owner_nlportid != info->snd_portid))
9036                 return -ENOENT;
9037
9038         return cfg80211_stop_sched_scan_req(rdev, req, false);
9039 }
9040
9041 static int nl80211_start_radar_detection(struct sk_buff *skb,
9042                                          struct genl_info *info)
9043 {
9044         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9045         struct net_device *dev = info->user_ptr[1];
9046         struct wireless_dev *wdev = dev->ieee80211_ptr;
9047         struct wiphy *wiphy = wdev->wiphy;
9048         struct cfg80211_chan_def chandef;
9049         enum nl80211_dfs_regions dfs_region;
9050         unsigned int cac_time_ms;
9051         int err;
9052
9053         dfs_region = reg_get_dfs_region(wiphy);
9054         if (dfs_region == NL80211_DFS_UNSET)
9055                 return -EINVAL;
9056
9057         err = nl80211_parse_chandef(rdev, info, &chandef);
9058         if (err)
9059                 return err;
9060
9061         if (netif_carrier_ok(dev))
9062                 return -EBUSY;
9063
9064         if (wdev->cac_started)
9065                 return -EBUSY;
9066
9067         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9068         if (err < 0)
9069                 return err;
9070
9071         if (err == 0)
9072                 return -EINVAL;
9073
9074         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
9075                 return -EINVAL;
9076
9077         /* CAC start is offloaded to HW and can't be started manually */
9078         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
9079                 return -EOPNOTSUPP;
9080
9081         if (!rdev->ops->start_radar_detection)
9082                 return -EOPNOTSUPP;
9083
9084         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
9085         if (WARN_ON(!cac_time_ms))
9086                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
9087
9088         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
9089         if (!err) {
9090                 wdev->chandef = chandef;
9091                 wdev->cac_started = true;
9092                 wdev->cac_start_time = jiffies;
9093                 wdev->cac_time_ms = cac_time_ms;
9094         }
9095         return err;
9096 }
9097
9098 static int nl80211_notify_radar_detection(struct sk_buff *skb,
9099                                           struct genl_info *info)
9100 {
9101         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9102         struct net_device *dev = info->user_ptr[1];
9103         struct wireless_dev *wdev = dev->ieee80211_ptr;
9104         struct wiphy *wiphy = wdev->wiphy;
9105         struct cfg80211_chan_def chandef;
9106         enum nl80211_dfs_regions dfs_region;
9107         int err;
9108
9109         dfs_region = reg_get_dfs_region(wiphy);
9110         if (dfs_region == NL80211_DFS_UNSET) {
9111                 GENL_SET_ERR_MSG(info,
9112                                  "DFS Region is not set. Unexpected Radar indication");
9113                 return -EINVAL;
9114         }
9115
9116         err = nl80211_parse_chandef(rdev, info, &chandef);
9117         if (err) {
9118                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
9119                 return err;
9120         }
9121
9122         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
9123         if (err < 0) {
9124                 GENL_SET_ERR_MSG(info, "chandef is invalid");
9125                 return err;
9126         }
9127
9128         if (err == 0) {
9129                 GENL_SET_ERR_MSG(info,
9130                                  "Unexpected Radar indication for chandef/iftype");
9131                 return -EINVAL;
9132         }
9133
9134         /* Do not process this notification if radar is already detected
9135          * by kernel on this channel, and return success.
9136          */
9137         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
9138                 return 0;
9139
9140         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
9141
9142         cfg80211_sched_dfs_chan_update(rdev);
9143
9144         rdev->radar_chandef = chandef;
9145
9146         /* Propagate this notification to other radios as well */
9147         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
9148
9149         return 0;
9150 }
9151
9152 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
9153 {
9154         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9155         struct net_device *dev = info->user_ptr[1];
9156         struct wireless_dev *wdev = dev->ieee80211_ptr;
9157         struct cfg80211_csa_settings params;
9158         struct nlattr **csa_attrs = NULL;
9159         int err;
9160         bool need_new_beacon = false;
9161         bool need_handle_dfs_flag = true;
9162         int len, i;
9163         u32 cs_count;
9164
9165         if (!rdev->ops->channel_switch ||
9166             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
9167                 return -EOPNOTSUPP;
9168
9169         switch (dev->ieee80211_ptr->iftype) {
9170         case NL80211_IFTYPE_AP:
9171         case NL80211_IFTYPE_P2P_GO:
9172                 need_new_beacon = true;
9173                 /* For all modes except AP the handle_dfs flag needs to be
9174                  * supplied to tell the kernel that userspace will handle radar
9175                  * events when they happen. Otherwise a switch to a channel
9176                  * requiring DFS will be rejected.
9177                  */
9178                 need_handle_dfs_flag = false;
9179
9180                 /* useless if AP is not running */
9181                 if (!wdev->beacon_interval)
9182                         return -ENOTCONN;
9183                 break;
9184         case NL80211_IFTYPE_ADHOC:
9185                 if (!wdev->ssid_len)
9186                         return -ENOTCONN;
9187                 break;
9188         case NL80211_IFTYPE_MESH_POINT:
9189                 if (!wdev->mesh_id_len)
9190                         return -ENOTCONN;
9191                 break;
9192         default:
9193                 return -EOPNOTSUPP;
9194         }
9195
9196         memset(&params, 0, sizeof(params));
9197         params.beacon_csa.ftm_responder = -1;
9198
9199         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
9200             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
9201                 return -EINVAL;
9202
9203         /* only important for AP, IBSS and mesh create IEs internally */
9204         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
9205                 return -EINVAL;
9206
9207         /* Even though the attribute is u32, the specification says
9208          * u8, so let's make sure we don't overflow.
9209          */
9210         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
9211         if (cs_count > 255)
9212                 return -EINVAL;
9213
9214         params.count = cs_count;
9215
9216         if (!need_new_beacon)
9217                 goto skip_beacons;
9218
9219         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
9220         if (err)
9221                 return err;
9222
9223         csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
9224                             GFP_KERNEL);
9225         if (!csa_attrs)
9226                 return -ENOMEM;
9227
9228         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
9229                                           info->attrs[NL80211_ATTR_CSA_IES],
9230                                           nl80211_policy, info->extack);
9231         if (err)
9232                 goto free;
9233
9234         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
9235         if (err)
9236                 goto free;
9237
9238         if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
9239                 err = -EINVAL;
9240                 goto free;
9241         }
9242
9243         len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9244         if (!len || (len % sizeof(u16))) {
9245                 err = -EINVAL;
9246                 goto free;
9247         }
9248
9249         params.n_counter_offsets_beacon = len / sizeof(u16);
9250         if (rdev->wiphy.max_num_csa_counters &&
9251             (params.n_counter_offsets_beacon >
9252              rdev->wiphy.max_num_csa_counters)) {
9253                 err = -EINVAL;
9254                 goto free;
9255         }
9256
9257         params.counter_offsets_beacon =
9258                 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
9259
9260         /* sanity checks - counters should fit and be the same */
9261         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
9262                 u16 offset = params.counter_offsets_beacon[i];
9263
9264                 if (offset >= params.beacon_csa.tail_len) {
9265                         err = -EINVAL;
9266                         goto free;
9267                 }
9268
9269                 if (params.beacon_csa.tail[offset] != params.count) {
9270                         err = -EINVAL;
9271                         goto free;
9272                 }
9273         }
9274
9275         if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
9276                 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9277                 if (!len || (len % sizeof(u16))) {
9278                         err = -EINVAL;
9279                         goto free;
9280                 }
9281
9282                 params.n_counter_offsets_presp = len / sizeof(u16);
9283                 if (rdev->wiphy.max_num_csa_counters &&
9284                     (params.n_counter_offsets_presp >
9285                      rdev->wiphy.max_num_csa_counters)) {
9286                         err = -EINVAL;
9287                         goto free;
9288                 }
9289
9290                 params.counter_offsets_presp =
9291                         nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
9292
9293                 /* sanity checks - counters should fit and be the same */
9294                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
9295                         u16 offset = params.counter_offsets_presp[i];
9296
9297                         if (offset >= params.beacon_csa.probe_resp_len) {
9298                                 err = -EINVAL;
9299                                 goto free;
9300                         }
9301
9302                         if (params.beacon_csa.probe_resp[offset] !=
9303                             params.count) {
9304                                 err = -EINVAL;
9305                                 goto free;
9306                         }
9307                 }
9308         }
9309
9310 skip_beacons:
9311         err = nl80211_parse_chandef(rdev, info, &params.chandef);
9312         if (err)
9313                 goto free;
9314
9315         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
9316                                            wdev->iftype)) {
9317                 err = -EINVAL;
9318                 goto free;
9319         }
9320
9321         err = cfg80211_chandef_dfs_required(wdev->wiphy,
9322                                             &params.chandef,
9323                                             wdev->iftype);
9324         if (err < 0)
9325                 goto free;
9326
9327         if (err > 0) {
9328                 params.radar_required = true;
9329                 if (need_handle_dfs_flag &&
9330                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
9331                         err = -EINVAL;
9332                         goto free;
9333                 }
9334         }
9335
9336         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
9337                 params.block_tx = true;
9338
9339         wdev_lock(wdev);
9340         err = rdev_channel_switch(rdev, dev, &params);
9341         wdev_unlock(wdev);
9342
9343 free:
9344         kfree(csa_attrs);
9345         return err;
9346 }
9347
9348 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
9349                             u32 seq, int flags,
9350                             struct cfg80211_registered_device *rdev,
9351                             struct wireless_dev *wdev,
9352                             struct cfg80211_internal_bss *intbss)
9353 {
9354         struct cfg80211_bss *res = &intbss->pub;
9355         const struct cfg80211_bss_ies *ies;
9356         void *hdr;
9357         struct nlattr *bss;
9358
9359         ASSERT_WDEV_LOCK(wdev);
9360
9361         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
9362                              NL80211_CMD_NEW_SCAN_RESULTS);
9363         if (!hdr)
9364                 return -1;
9365
9366         genl_dump_check_consistent(cb, hdr);
9367
9368         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
9369                 goto nla_put_failure;
9370         if (wdev->netdev &&
9371             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
9372                 goto nla_put_failure;
9373         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
9374                               NL80211_ATTR_PAD))
9375                 goto nla_put_failure;
9376
9377         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
9378         if (!bss)
9379                 goto nla_put_failure;
9380         if ((!is_zero_ether_addr(res->bssid) &&
9381              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
9382                 goto nla_put_failure;
9383
9384         rcu_read_lock();
9385         /* indicate whether we have probe response data or not */
9386         if (rcu_access_pointer(res->proberesp_ies) &&
9387             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
9388                 goto fail_unlock_rcu;
9389
9390         /* this pointer prefers to be pointed to probe response data
9391          * but is always valid
9392          */
9393         ies = rcu_dereference(res->ies);
9394         if (ies) {
9395                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
9396                                       NL80211_BSS_PAD))
9397                         goto fail_unlock_rcu;
9398                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
9399                                         ies->len, ies->data))
9400                         goto fail_unlock_rcu;
9401         }
9402
9403         /* and this pointer is always (unless driver didn't know) beacon data */
9404         ies = rcu_dereference(res->beacon_ies);
9405         if (ies && ies->from_beacon) {
9406                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
9407                                       NL80211_BSS_PAD))
9408                         goto fail_unlock_rcu;
9409                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
9410                                         ies->len, ies->data))
9411                         goto fail_unlock_rcu;
9412         }
9413         rcu_read_unlock();
9414
9415         if (res->beacon_interval &&
9416             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
9417                 goto nla_put_failure;
9418         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
9419             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
9420             nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET,
9421                         res->channel->freq_offset) ||
9422             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
9423             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
9424                         jiffies_to_msecs(jiffies - intbss->ts)))
9425                 goto nla_put_failure;
9426
9427         if (intbss->parent_tsf &&
9428             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
9429                                intbss->parent_tsf, NL80211_BSS_PAD) ||
9430              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
9431                      intbss->parent_bssid)))
9432                 goto nla_put_failure;
9433
9434         if (intbss->ts_boottime &&
9435             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
9436                               intbss->ts_boottime, NL80211_BSS_PAD))
9437                 goto nla_put_failure;
9438
9439         if (!nl80211_put_signal(msg, intbss->pub.chains,
9440                                 intbss->pub.chain_signal,
9441                                 NL80211_BSS_CHAIN_SIGNAL))
9442                 goto nla_put_failure;
9443
9444         switch (rdev->wiphy.signal_type) {
9445         case CFG80211_SIGNAL_TYPE_MBM:
9446                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
9447                         goto nla_put_failure;
9448                 break;
9449         case CFG80211_SIGNAL_TYPE_UNSPEC:
9450                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
9451                         goto nla_put_failure;
9452                 break;
9453         default:
9454                 break;
9455         }
9456
9457         switch (wdev->iftype) {
9458         case NL80211_IFTYPE_P2P_CLIENT:
9459         case NL80211_IFTYPE_STATION:
9460                 if (intbss == wdev->current_bss &&
9461                     nla_put_u32(msg, NL80211_BSS_STATUS,
9462                                 NL80211_BSS_STATUS_ASSOCIATED))
9463                         goto nla_put_failure;
9464                 break;
9465         case NL80211_IFTYPE_ADHOC:
9466                 if (intbss == wdev->current_bss &&
9467                     nla_put_u32(msg, NL80211_BSS_STATUS,
9468                                 NL80211_BSS_STATUS_IBSS_JOINED))
9469                         goto nla_put_failure;
9470                 break;
9471         default:
9472                 break;
9473         }
9474
9475         nla_nest_end(msg, bss);
9476
9477         genlmsg_end(msg, hdr);
9478         return 0;
9479
9480  fail_unlock_rcu:
9481         rcu_read_unlock();
9482  nla_put_failure:
9483         genlmsg_cancel(msg, hdr);
9484         return -EMSGSIZE;
9485 }
9486
9487 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
9488 {
9489         struct cfg80211_registered_device *rdev;
9490         struct cfg80211_internal_bss *scan;
9491         struct wireless_dev *wdev;
9492         int start = cb->args[2], idx = 0;
9493         int err;
9494
9495         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9496         if (err)
9497                 return err;
9498         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9499         __acquire(&rdev->wiphy.mtx);
9500
9501         wdev_lock(wdev);
9502         spin_lock_bh(&rdev->bss_lock);
9503
9504         /*
9505          * dump_scan will be called multiple times to break up the scan results
9506          * into multiple messages.  It is unlikely that any more bss-es will be
9507          * expired after the first call, so only call only call this on the
9508          * first dump_scan invocation.
9509          */
9510         if (start == 0)
9511                 cfg80211_bss_expire(rdev);
9512
9513         cb->seq = rdev->bss_generation;
9514
9515         list_for_each_entry(scan, &rdev->bss_list, list) {
9516                 if (++idx <= start)
9517                         continue;
9518                 if (nl80211_send_bss(skb, cb,
9519                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9520                                 rdev, wdev, scan) < 0) {
9521                         idx--;
9522                         break;
9523                 }
9524         }
9525
9526         spin_unlock_bh(&rdev->bss_lock);
9527         wdev_unlock(wdev);
9528
9529         cb->args[2] = idx;
9530         wiphy_unlock(&rdev->wiphy);
9531
9532         return skb->len;
9533 }
9534
9535 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
9536                                int flags, struct net_device *dev,
9537                                bool allow_radio_stats,
9538                                struct survey_info *survey)
9539 {
9540         void *hdr;
9541         struct nlattr *infoattr;
9542
9543         /* skip radio stats if userspace didn't request them */
9544         if (!survey->channel && !allow_radio_stats)
9545                 return 0;
9546
9547         hdr = nl80211hdr_put(msg, portid, seq, flags,
9548                              NL80211_CMD_NEW_SURVEY_RESULTS);
9549         if (!hdr)
9550                 return -ENOMEM;
9551
9552         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
9553                 goto nla_put_failure;
9554
9555         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
9556         if (!infoattr)
9557                 goto nla_put_failure;
9558
9559         if (survey->channel &&
9560             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
9561                         survey->channel->center_freq))
9562                 goto nla_put_failure;
9563
9564         if (survey->channel && survey->channel->freq_offset &&
9565             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET,
9566                         survey->channel->freq_offset))
9567                 goto nla_put_failure;
9568
9569         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
9570             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
9571                 goto nla_put_failure;
9572         if ((survey->filled & SURVEY_INFO_IN_USE) &&
9573             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
9574                 goto nla_put_failure;
9575         if ((survey->filled & SURVEY_INFO_TIME) &&
9576             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
9577                         survey->time, NL80211_SURVEY_INFO_PAD))
9578                 goto nla_put_failure;
9579         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
9580             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
9581                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
9582                 goto nla_put_failure;
9583         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
9584             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
9585                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
9586                 goto nla_put_failure;
9587         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
9588             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
9589                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
9590                 goto nla_put_failure;
9591         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
9592             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
9593                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
9594                 goto nla_put_failure;
9595         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
9596             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
9597                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
9598                 goto nla_put_failure;
9599         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
9600             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
9601                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
9602                 goto nla_put_failure;
9603
9604         nla_nest_end(msg, infoattr);
9605
9606         genlmsg_end(msg, hdr);
9607         return 0;
9608
9609  nla_put_failure:
9610         genlmsg_cancel(msg, hdr);
9611         return -EMSGSIZE;
9612 }
9613
9614 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
9615 {
9616         struct nlattr **attrbuf;
9617         struct survey_info survey;
9618         struct cfg80211_registered_device *rdev;
9619         struct wireless_dev *wdev;
9620         int survey_idx = cb->args[2];
9621         int res;
9622         bool radio_stats;
9623
9624         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
9625         if (!attrbuf)
9626                 return -ENOMEM;
9627
9628         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
9629         if (res) {
9630                 kfree(attrbuf);
9631                 return res;
9632         }
9633         /* nl80211_prepare_wdev_dump acquired it in the successful case */
9634         __acquire(&rdev->wiphy.mtx);
9635
9636         /* prepare_wdev_dump parsed the attributes */
9637         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
9638
9639         if (!wdev->netdev) {
9640                 res = -EINVAL;
9641                 goto out_err;
9642         }
9643
9644         if (!rdev->ops->dump_survey) {
9645                 res = -EOPNOTSUPP;
9646                 goto out_err;
9647         }
9648
9649         while (1) {
9650                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
9651                 if (res == -ENOENT)
9652                         break;
9653                 if (res)
9654                         goto out_err;
9655
9656                 /* don't send disabled channels, but do send non-channel data */
9657                 if (survey.channel &&
9658                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
9659                         survey_idx++;
9660                         continue;
9661                 }
9662
9663                 if (nl80211_send_survey(skb,
9664                                 NETLINK_CB(cb->skb).portid,
9665                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
9666                                 wdev->netdev, radio_stats, &survey) < 0)
9667                         goto out;
9668                 survey_idx++;
9669         }
9670
9671  out:
9672         cb->args[2] = survey_idx;
9673         res = skb->len;
9674  out_err:
9675         kfree(attrbuf);
9676         wiphy_unlock(&rdev->wiphy);
9677         return res;
9678 }
9679
9680 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
9681 {
9682         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
9683                                   NL80211_WPA_VERSION_2 |
9684                                   NL80211_WPA_VERSION_3));
9685 }
9686
9687 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
9688 {
9689         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9690         struct net_device *dev = info->user_ptr[1];
9691         struct ieee80211_channel *chan;
9692         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
9693         int err, ssid_len, ie_len = 0, auth_data_len = 0;
9694         enum nl80211_auth_type auth_type;
9695         struct key_parse key;
9696         bool local_state_change;
9697         u32 freq;
9698
9699         if (!info->attrs[NL80211_ATTR_MAC])
9700                 return -EINVAL;
9701
9702         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
9703                 return -EINVAL;
9704
9705         if (!info->attrs[NL80211_ATTR_SSID])
9706                 return -EINVAL;
9707
9708         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
9709                 return -EINVAL;
9710
9711         err = nl80211_parse_key(info, &key);
9712         if (err)
9713                 return err;
9714
9715         if (key.idx >= 0) {
9716                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
9717                         return -EINVAL;
9718                 if (!key.p.key || !key.p.key_len)
9719                         return -EINVAL;
9720                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
9721                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
9722                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
9723                      key.p.key_len != WLAN_KEY_LEN_WEP104))
9724                         return -EINVAL;
9725                 if (key.idx > 3)
9726                         return -EINVAL;
9727         } else {
9728                 key.p.key_len = 0;
9729                 key.p.key = NULL;
9730         }
9731
9732         if (key.idx >= 0) {
9733                 int i;
9734                 bool ok = false;
9735
9736                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
9737                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
9738                                 ok = true;
9739                                 break;
9740                         }
9741                 }
9742                 if (!ok)
9743                         return -EINVAL;
9744         }
9745
9746         if (!rdev->ops->auth)
9747                 return -EOPNOTSUPP;
9748
9749         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9750             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9751                 return -EOPNOTSUPP;
9752
9753         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9754         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9755         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9756                 freq +=
9757                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9758
9759         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9760         if (!chan)
9761                 return -EINVAL;
9762
9763         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9764         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9765
9766         if (info->attrs[NL80211_ATTR_IE]) {
9767                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9768                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9769         }
9770
9771         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9772         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9773                 return -EINVAL;
9774
9775         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9776              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9777              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9778              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9779             !info->attrs[NL80211_ATTR_AUTH_DATA])
9780                 return -EINVAL;
9781
9782         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9783                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9784                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9785                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9786                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9787                         return -EINVAL;
9788                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9789                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9790         }
9791
9792         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9793
9794         /*
9795          * Since we no longer track auth state, ignore
9796          * requests to only change local state.
9797          */
9798         if (local_state_change)
9799                 return 0;
9800
9801         wdev_lock(dev->ieee80211_ptr);
9802         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9803                                  ssid, ssid_len, ie, ie_len,
9804                                  key.p.key, key.p.key_len, key.idx,
9805                                  auth_data, auth_data_len);
9806         wdev_unlock(dev->ieee80211_ptr);
9807         return err;
9808 }
9809
9810 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9811                                      struct genl_info *info)
9812 {
9813         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9814                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9815                 return -EINVAL;
9816         }
9817
9818         if (!rdev->ops->tx_control_port ||
9819             !wiphy_ext_feature_isset(&rdev->wiphy,
9820                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9821                 return -EOPNOTSUPP;
9822
9823         return 0;
9824 }
9825
9826 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9827                                    struct genl_info *info,
9828                                    struct cfg80211_crypto_settings *settings,
9829                                    int cipher_limit)
9830 {
9831         memset(settings, 0, sizeof(*settings));
9832
9833         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9834
9835         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9836                 u16 proto;
9837
9838                 proto = nla_get_u16(
9839                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9840                 settings->control_port_ethertype = cpu_to_be16(proto);
9841                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9842                     proto != ETH_P_PAE)
9843                         return -EINVAL;
9844                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9845                         settings->control_port_no_encrypt = true;
9846         } else
9847                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9848
9849         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9850                 int r = validate_pae_over_nl80211(rdev, info);
9851
9852                 if (r < 0)
9853                         return r;
9854
9855                 settings->control_port_over_nl80211 = true;
9856
9857                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH])
9858                         settings->control_port_no_preauth = true;
9859         }
9860
9861         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9862                 void *data;
9863                 int len, i;
9864
9865                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9866                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9867                 settings->n_ciphers_pairwise = len / sizeof(u32);
9868
9869                 if (len % sizeof(u32))
9870                         return -EINVAL;
9871
9872                 if (settings->n_ciphers_pairwise > cipher_limit)
9873                         return -EINVAL;
9874
9875                 memcpy(settings->ciphers_pairwise, data, len);
9876
9877                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9878                         if (!cfg80211_supported_cipher_suite(
9879                                         &rdev->wiphy,
9880                                         settings->ciphers_pairwise[i]))
9881                                 return -EINVAL;
9882         }
9883
9884         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9885                 settings->cipher_group =
9886                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9887                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9888                                                      settings->cipher_group))
9889                         return -EINVAL;
9890         }
9891
9892         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9893                 settings->wpa_versions =
9894                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9895                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9896                         return -EINVAL;
9897         }
9898
9899         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9900                 void *data;
9901                 int len;
9902
9903                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9904                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9905                 settings->n_akm_suites = len / sizeof(u32);
9906
9907                 if (len % sizeof(u32))
9908                         return -EINVAL;
9909
9910                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9911                         return -EINVAL;
9912
9913                 memcpy(settings->akm_suites, data, len);
9914         }
9915
9916         if (info->attrs[NL80211_ATTR_PMK]) {
9917                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9918                         return -EINVAL;
9919                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9920                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) &&
9921                     !wiphy_ext_feature_isset(&rdev->wiphy,
9922                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK))
9923                         return -EINVAL;
9924                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9925         }
9926
9927         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9928                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9929                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
9930                     !wiphy_ext_feature_isset(&rdev->wiphy,
9931                                              NL80211_EXT_FEATURE_SAE_OFFLOAD_AP))
9932                         return -EINVAL;
9933                 settings->sae_pwd =
9934                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9935                 settings->sae_pwd_len =
9936                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9937         }
9938
9939         if (info->attrs[NL80211_ATTR_SAE_PWE])
9940                 settings->sae_pwe =
9941                         nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]);
9942         else
9943                 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED;
9944
9945         return 0;
9946 }
9947
9948 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9949 {
9950         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9951         struct net_device *dev = info->user_ptr[1];
9952         struct ieee80211_channel *chan;
9953         struct cfg80211_assoc_request req = {};
9954         const u8 *bssid, *ssid;
9955         int err, ssid_len = 0;
9956         u32 freq;
9957
9958         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9959             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9960                 return -EPERM;
9961
9962         if (!info->attrs[NL80211_ATTR_MAC] ||
9963             !info->attrs[NL80211_ATTR_SSID] ||
9964             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9965                 return -EINVAL;
9966
9967         if (!rdev->ops->assoc)
9968                 return -EOPNOTSUPP;
9969
9970         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9971             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9972                 return -EOPNOTSUPP;
9973
9974         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9975
9976         freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]));
9977         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
9978                 freq +=
9979                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
9980         chan = nl80211_get_valid_chan(&rdev->wiphy, freq);
9981         if (!chan)
9982                 return -EINVAL;
9983
9984         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9985         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9986
9987         if (info->attrs[NL80211_ATTR_IE]) {
9988                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9989                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9990         }
9991
9992         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9993                 enum nl80211_mfp mfp =
9994                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9995                 if (mfp == NL80211_MFP_REQUIRED)
9996                         req.use_mfp = true;
9997                 else if (mfp != NL80211_MFP_NO)
9998                         return -EINVAL;
9999         }
10000
10001         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10002                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10003
10004         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10005                 req.flags |= ASSOC_REQ_DISABLE_HT;
10006
10007         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10008                 memcpy(&req.ht_capa_mask,
10009                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10010                        sizeof(req.ht_capa_mask));
10011
10012         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10013                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10014                         return -EINVAL;
10015                 memcpy(&req.ht_capa,
10016                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10017                        sizeof(req.ht_capa));
10018         }
10019
10020         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10021                 req.flags |= ASSOC_REQ_DISABLE_VHT;
10022
10023         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10024                 req.flags |= ASSOC_REQ_DISABLE_HE;
10025
10026         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10027                 memcpy(&req.vht_capa_mask,
10028                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10029                        sizeof(req.vht_capa_mask));
10030
10031         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10032                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10033                         return -EINVAL;
10034                 memcpy(&req.vht_capa,
10035                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10036                        sizeof(req.vht_capa));
10037         }
10038
10039         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10040                 if (!((rdev->wiphy.features &
10041                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10042                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10043                     !wiphy_ext_feature_isset(&rdev->wiphy,
10044                                              NL80211_EXT_FEATURE_RRM))
10045                         return -EINVAL;
10046                 req.flags |= ASSOC_REQ_USE_RRM;
10047         }
10048
10049         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
10050                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
10051                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
10052                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
10053                         return -EINVAL;
10054                 req.fils_nonces =
10055                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
10056         }
10057
10058         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) {
10059                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY])
10060                         return -EINVAL;
10061                 memcpy(&req.s1g_capa_mask,
10062                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]),
10063                        sizeof(req.s1g_capa_mask));
10064         }
10065
10066         if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) {
10067                 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK])
10068                         return -EINVAL;
10069                 memcpy(&req.s1g_capa,
10070                        nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]),
10071                        sizeof(req.s1g_capa));
10072         }
10073
10074         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
10075         if (!err) {
10076                 wdev_lock(dev->ieee80211_ptr);
10077
10078                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
10079                                           ssid, ssid_len, &req);
10080
10081                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10082                         dev->ieee80211_ptr->conn_owner_nlportid =
10083                                 info->snd_portid;
10084                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10085                                bssid, ETH_ALEN);
10086                 }
10087
10088                 wdev_unlock(dev->ieee80211_ptr);
10089         }
10090
10091         return err;
10092 }
10093
10094 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
10095 {
10096         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10097         struct net_device *dev = info->user_ptr[1];
10098         const u8 *ie = NULL, *bssid;
10099         int ie_len = 0, err;
10100         u16 reason_code;
10101         bool local_state_change;
10102
10103         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10104             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10105                 return -EPERM;
10106
10107         if (!info->attrs[NL80211_ATTR_MAC])
10108                 return -EINVAL;
10109
10110         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10111                 return -EINVAL;
10112
10113         if (!rdev->ops->deauth)
10114                 return -EOPNOTSUPP;
10115
10116         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10117             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10118                 return -EOPNOTSUPP;
10119
10120         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10121
10122         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10123         if (reason_code == 0) {
10124                 /* Reason Code 0 is reserved */
10125                 return -EINVAL;
10126         }
10127
10128         if (info->attrs[NL80211_ATTR_IE]) {
10129                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10130                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10131         }
10132
10133         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10134
10135         wdev_lock(dev->ieee80211_ptr);
10136         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
10137                                    local_state_change);
10138         wdev_unlock(dev->ieee80211_ptr);
10139         return err;
10140 }
10141
10142 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
10143 {
10144         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10145         struct net_device *dev = info->user_ptr[1];
10146         const u8 *ie = NULL, *bssid;
10147         int ie_len = 0, err;
10148         u16 reason_code;
10149         bool local_state_change;
10150
10151         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10152             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10153                 return -EPERM;
10154
10155         if (!info->attrs[NL80211_ATTR_MAC])
10156                 return -EINVAL;
10157
10158         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10159                 return -EINVAL;
10160
10161         if (!rdev->ops->disassoc)
10162                 return -EOPNOTSUPP;
10163
10164         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10165             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10166                 return -EOPNOTSUPP;
10167
10168         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10169
10170         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10171         if (reason_code == 0) {
10172                 /* Reason Code 0 is reserved */
10173                 return -EINVAL;
10174         }
10175
10176         if (info->attrs[NL80211_ATTR_IE]) {
10177                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10178                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10179         }
10180
10181         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
10182
10183         wdev_lock(dev->ieee80211_ptr);
10184         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
10185                                      local_state_change);
10186         wdev_unlock(dev->ieee80211_ptr);
10187         return err;
10188 }
10189
10190 static bool
10191 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
10192                          int mcast_rate[NUM_NL80211_BANDS],
10193                          int rateval)
10194 {
10195         struct wiphy *wiphy = &rdev->wiphy;
10196         bool found = false;
10197         int band, i;
10198
10199         for (band = 0; band < NUM_NL80211_BANDS; band++) {
10200                 struct ieee80211_supported_band *sband;
10201
10202                 sband = wiphy->bands[band];
10203                 if (!sband)
10204                         continue;
10205
10206                 for (i = 0; i < sband->n_bitrates; i++) {
10207                         if (sband->bitrates[i].bitrate == rateval) {
10208                                 mcast_rate[band] = i + 1;
10209                                 found = true;
10210                                 break;
10211                         }
10212                 }
10213         }
10214
10215         return found;
10216 }
10217
10218 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
10219 {
10220         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10221         struct net_device *dev = info->user_ptr[1];
10222         struct cfg80211_ibss_params ibss;
10223         struct wiphy *wiphy;
10224         struct cfg80211_cached_keys *connkeys = NULL;
10225         int err;
10226
10227         memset(&ibss, 0, sizeof(ibss));
10228
10229         if (!info->attrs[NL80211_ATTR_SSID] ||
10230             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10231                 return -EINVAL;
10232
10233         ibss.beacon_interval = 100;
10234
10235         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
10236                 ibss.beacon_interval =
10237                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
10238
10239         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
10240                                            ibss.beacon_interval);
10241         if (err)
10242                 return err;
10243
10244         if (!rdev->ops->join_ibss)
10245                 return -EOPNOTSUPP;
10246
10247         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10248                 return -EOPNOTSUPP;
10249
10250         wiphy = &rdev->wiphy;
10251
10252         if (info->attrs[NL80211_ATTR_MAC]) {
10253                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10254
10255                 if (!is_valid_ether_addr(ibss.bssid))
10256                         return -EINVAL;
10257         }
10258         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10259         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10260
10261         if (info->attrs[NL80211_ATTR_IE]) {
10262                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10263                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10264         }
10265
10266         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
10267         if (err)
10268                 return err;
10269
10270         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
10271                                      NL80211_IFTYPE_ADHOC))
10272                 return -EINVAL;
10273
10274         switch (ibss.chandef.width) {
10275         case NL80211_CHAN_WIDTH_5:
10276         case NL80211_CHAN_WIDTH_10:
10277         case NL80211_CHAN_WIDTH_20_NOHT:
10278                 break;
10279         case NL80211_CHAN_WIDTH_20:
10280         case NL80211_CHAN_WIDTH_40:
10281                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10282                         return -EINVAL;
10283                 break;
10284         case NL80211_CHAN_WIDTH_80:
10285         case NL80211_CHAN_WIDTH_80P80:
10286         case NL80211_CHAN_WIDTH_160:
10287                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
10288                         return -EINVAL;
10289                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
10290                                              NL80211_EXT_FEATURE_VHT_IBSS))
10291                         return -EINVAL;
10292                 break;
10293         default:
10294                 return -EINVAL;
10295         }
10296
10297         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
10298         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
10299
10300         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
10301                 u8 *rates =
10302                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10303                 int n_rates =
10304                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
10305                 struct ieee80211_supported_band *sband =
10306                         wiphy->bands[ibss.chandef.chan->band];
10307
10308                 err = ieee80211_get_ratemask(sband, rates, n_rates,
10309                                              &ibss.basic_rates);
10310                 if (err)
10311                         return err;
10312         }
10313
10314         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10315                 memcpy(&ibss.ht_capa_mask,
10316                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10317                        sizeof(ibss.ht_capa_mask));
10318
10319         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10320                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10321                         return -EINVAL;
10322                 memcpy(&ibss.ht_capa,
10323                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10324                        sizeof(ibss.ht_capa));
10325         }
10326
10327         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
10328             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
10329                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
10330                 return -EINVAL;
10331
10332         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10333                 bool no_ht = false;
10334
10335                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
10336                 if (IS_ERR(connkeys))
10337                         return PTR_ERR(connkeys);
10338
10339                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
10340                     no_ht) {
10341                         kfree_sensitive(connkeys);
10342                         return -EINVAL;
10343                 }
10344         }
10345
10346         ibss.control_port =
10347                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
10348
10349         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
10350                 int r = validate_pae_over_nl80211(rdev, info);
10351
10352                 if (r < 0) {
10353                         kfree_sensitive(connkeys);
10354                         return r;
10355                 }
10356
10357                 ibss.control_port_over_nl80211 = true;
10358         }
10359
10360         ibss.userspace_handles_dfs =
10361                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
10362
10363         wdev_lock(dev->ieee80211_ptr);
10364         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
10365         if (err)
10366                 kfree_sensitive(connkeys);
10367         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
10368                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10369         wdev_unlock(dev->ieee80211_ptr);
10370
10371         return err;
10372 }
10373
10374 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
10375 {
10376         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10377         struct net_device *dev = info->user_ptr[1];
10378
10379         if (!rdev->ops->leave_ibss)
10380                 return -EOPNOTSUPP;
10381
10382         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
10383                 return -EOPNOTSUPP;
10384
10385         return cfg80211_leave_ibss(rdev, dev, false);
10386 }
10387
10388 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
10389 {
10390         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10391         struct net_device *dev = info->user_ptr[1];
10392         int mcast_rate[NUM_NL80211_BANDS];
10393         u32 nla_rate;
10394         int err;
10395
10396         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
10397             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
10398             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
10399                 return -EOPNOTSUPP;
10400
10401         if (!rdev->ops->set_mcast_rate)
10402                 return -EOPNOTSUPP;
10403
10404         memset(mcast_rate, 0, sizeof(mcast_rate));
10405
10406         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
10407                 return -EINVAL;
10408
10409         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
10410         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
10411                 return -EINVAL;
10412
10413         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
10414
10415         return err;
10416 }
10417
10418 static struct sk_buff *
10419 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
10420                             struct wireless_dev *wdev, int approxlen,
10421                             u32 portid, u32 seq, enum nl80211_commands cmd,
10422                             enum nl80211_attrs attr,
10423                             const struct nl80211_vendor_cmd_info *info,
10424                             gfp_t gfp)
10425 {
10426         struct sk_buff *skb;
10427         void *hdr;
10428         struct nlattr *data;
10429
10430         skb = nlmsg_new(approxlen + 100, gfp);
10431         if (!skb)
10432                 return NULL;
10433
10434         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
10435         if (!hdr) {
10436                 kfree_skb(skb);
10437                 return NULL;
10438         }
10439
10440         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
10441                 goto nla_put_failure;
10442
10443         if (info) {
10444                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
10445                                 info->vendor_id))
10446                         goto nla_put_failure;
10447                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
10448                                 info->subcmd))
10449                         goto nla_put_failure;
10450         }
10451
10452         if (wdev) {
10453                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
10454                                       wdev_id(wdev), NL80211_ATTR_PAD))
10455                         goto nla_put_failure;
10456                 if (wdev->netdev &&
10457                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
10458                                 wdev->netdev->ifindex))
10459                         goto nla_put_failure;
10460         }
10461
10462         data = nla_nest_start_noflag(skb, attr);
10463         if (!data)
10464                 goto nla_put_failure;
10465
10466         ((void **)skb->cb)[0] = rdev;
10467         ((void **)skb->cb)[1] = hdr;
10468         ((void **)skb->cb)[2] = data;
10469
10470         return skb;
10471
10472  nla_put_failure:
10473         kfree_skb(skb);
10474         return NULL;
10475 }
10476
10477 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
10478                                            struct wireless_dev *wdev,
10479                                            enum nl80211_commands cmd,
10480                                            enum nl80211_attrs attr,
10481                                            unsigned int portid,
10482                                            int vendor_event_idx,
10483                                            int approxlen, gfp_t gfp)
10484 {
10485         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
10486         const struct nl80211_vendor_cmd_info *info;
10487
10488         switch (cmd) {
10489         case NL80211_CMD_TESTMODE:
10490                 if (WARN_ON(vendor_event_idx != -1))
10491                         return NULL;
10492                 info = NULL;
10493                 break;
10494         case NL80211_CMD_VENDOR:
10495                 if (WARN_ON(vendor_event_idx < 0 ||
10496                             vendor_event_idx >= wiphy->n_vendor_events))
10497                         return NULL;
10498                 info = &wiphy->vendor_events[vendor_event_idx];
10499                 break;
10500         default:
10501                 WARN_ON(1);
10502                 return NULL;
10503         }
10504
10505         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
10506                                            cmd, attr, info, gfp);
10507 }
10508 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
10509
10510 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
10511 {
10512         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
10513         void *hdr = ((void **)skb->cb)[1];
10514         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
10515         struct nlattr *data = ((void **)skb->cb)[2];
10516         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
10517
10518         /* clear CB data for netlink core to own from now on */
10519         memset(skb->cb, 0, sizeof(skb->cb));
10520
10521         nla_nest_end(skb, data);
10522         genlmsg_end(skb, hdr);
10523
10524         if (nlhdr->nlmsg_pid) {
10525                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
10526                                 nlhdr->nlmsg_pid);
10527         } else {
10528                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
10529                         mcgrp = NL80211_MCGRP_VENDOR;
10530
10531                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
10532                                         skb, 0, mcgrp, gfp);
10533         }
10534 }
10535 EXPORT_SYMBOL(__cfg80211_send_event_skb);
10536
10537 #ifdef CONFIG_NL80211_TESTMODE
10538 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
10539 {
10540         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10541         struct wireless_dev *wdev;
10542         int err;
10543
10544         lockdep_assert_held(&rdev->wiphy.mtx);
10545
10546         wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
10547                                           info->attrs);
10548
10549         if (!rdev->ops->testmode_cmd)
10550                 return -EOPNOTSUPP;
10551
10552         if (IS_ERR(wdev)) {
10553                 err = PTR_ERR(wdev);
10554                 if (err != -EINVAL)
10555                         return err;
10556                 wdev = NULL;
10557         } else if (wdev->wiphy != &rdev->wiphy) {
10558                 return -EINVAL;
10559         }
10560
10561         if (!info->attrs[NL80211_ATTR_TESTDATA])
10562                 return -EINVAL;
10563
10564         rdev->cur_cmd_info = info;
10565         err = rdev_testmode_cmd(rdev, wdev,
10566                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
10567                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
10568         rdev->cur_cmd_info = NULL;
10569
10570         return err;
10571 }
10572
10573 static int nl80211_testmode_dump(struct sk_buff *skb,
10574                                  struct netlink_callback *cb)
10575 {
10576         struct cfg80211_registered_device *rdev;
10577         struct nlattr **attrbuf = NULL;
10578         int err;
10579         long phy_idx;
10580         void *data = NULL;
10581         int data_len = 0;
10582
10583         rtnl_lock();
10584
10585         if (cb->args[0]) {
10586                 /*
10587                  * 0 is a valid index, but not valid for args[0],
10588                  * so we need to offset by 1.
10589                  */
10590                 phy_idx = cb->args[0] - 1;
10591
10592                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
10593                 if (!rdev) {
10594                         err = -ENOENT;
10595                         goto out_err;
10596                 }
10597         } else {
10598                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
10599                                   GFP_KERNEL);
10600                 if (!attrbuf) {
10601                         err = -ENOMEM;
10602                         goto out_err;
10603                 }
10604
10605                 err = nlmsg_parse_deprecated(cb->nlh,
10606                                              GENL_HDRLEN + nl80211_fam.hdrsize,
10607                                              attrbuf, nl80211_fam.maxattr,
10608                                              nl80211_policy, NULL);
10609                 if (err)
10610                         goto out_err;
10611
10612                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
10613                 if (IS_ERR(rdev)) {
10614                         err = PTR_ERR(rdev);
10615                         goto out_err;
10616                 }
10617                 phy_idx = rdev->wiphy_idx;
10618
10619                 if (attrbuf[NL80211_ATTR_TESTDATA])
10620                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
10621         }
10622
10623         if (cb->args[1]) {
10624                 data = nla_data((void *)cb->args[1]);
10625                 data_len = nla_len((void *)cb->args[1]);
10626         }
10627
10628         if (!rdev->ops->testmode_dump) {
10629                 err = -EOPNOTSUPP;
10630                 goto out_err;
10631         }
10632
10633         while (1) {
10634                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
10635                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
10636                                            NL80211_CMD_TESTMODE);
10637                 struct nlattr *tmdata;
10638
10639                 if (!hdr)
10640                         break;
10641
10642                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
10643                         genlmsg_cancel(skb, hdr);
10644                         break;
10645                 }
10646
10647                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
10648                 if (!tmdata) {
10649                         genlmsg_cancel(skb, hdr);
10650                         break;
10651                 }
10652                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
10653                 nla_nest_end(skb, tmdata);
10654
10655                 if (err == -ENOBUFS || err == -ENOENT) {
10656                         genlmsg_cancel(skb, hdr);
10657                         break;
10658                 } else if (err) {
10659                         genlmsg_cancel(skb, hdr);
10660                         goto out_err;
10661                 }
10662
10663                 genlmsg_end(skb, hdr);
10664         }
10665
10666         err = skb->len;
10667         /* see above */
10668         cb->args[0] = phy_idx + 1;
10669  out_err:
10670         kfree(attrbuf);
10671         rtnl_unlock();
10672         return err;
10673 }
10674 #endif
10675
10676 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
10677 {
10678         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10679         struct net_device *dev = info->user_ptr[1];
10680         struct cfg80211_connect_params connect;
10681         struct wiphy *wiphy;
10682         struct cfg80211_cached_keys *connkeys = NULL;
10683         u32 freq = 0;
10684         int err;
10685
10686         memset(&connect, 0, sizeof(connect));
10687
10688         if (!info->attrs[NL80211_ATTR_SSID] ||
10689             !nla_len(info->attrs[NL80211_ATTR_SSID]))
10690                 return -EINVAL;
10691
10692         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10693                 connect.auth_type =
10694                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10695                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
10696                                              NL80211_CMD_CONNECT))
10697                         return -EINVAL;
10698         } else
10699                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
10700
10701         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
10702
10703         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
10704             !wiphy_ext_feature_isset(&rdev->wiphy,
10705                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
10706                 return -EINVAL;
10707         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
10708
10709         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
10710                                       NL80211_MAX_NR_CIPHER_SUITES);
10711         if (err)
10712                 return err;
10713
10714         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10715             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10716                 return -EOPNOTSUPP;
10717
10718         wiphy = &rdev->wiphy;
10719
10720         connect.bg_scan_period = -1;
10721         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
10722                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
10723                 connect.bg_scan_period =
10724                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
10725         }
10726
10727         if (info->attrs[NL80211_ATTR_MAC])
10728                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10729         else if (info->attrs[NL80211_ATTR_MAC_HINT])
10730                 connect.bssid_hint =
10731                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
10732         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10733         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10734
10735         if (info->attrs[NL80211_ATTR_IE]) {
10736                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10737                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10738         }
10739
10740         if (info->attrs[NL80211_ATTR_USE_MFP]) {
10741                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
10742                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
10743                     !wiphy_ext_feature_isset(&rdev->wiphy,
10744                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
10745                         return -EOPNOTSUPP;
10746         } else {
10747                 connect.mfp = NL80211_MFP_NO;
10748         }
10749
10750         if (info->attrs[NL80211_ATTR_PREV_BSSID])
10751                 connect.prev_bssid =
10752                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
10753
10754         if (info->attrs[NL80211_ATTR_WIPHY_FREQ])
10755                 freq = MHZ_TO_KHZ(nla_get_u32(
10756                                         info->attrs[NL80211_ATTR_WIPHY_FREQ]));
10757         if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET])
10758                 freq +=
10759                     nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]);
10760
10761         if (freq) {
10762                 connect.channel = nl80211_get_valid_chan(wiphy, freq);
10763                 if (!connect.channel)
10764                         return -EINVAL;
10765         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
10766                 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
10767                 freq = MHZ_TO_KHZ(freq);
10768                 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq);
10769                 if (!connect.channel_hint)
10770                         return -EINVAL;
10771         }
10772
10773         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
10774                 connect.edmg.channels =
10775                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
10776
10777                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
10778                         connect.edmg.bw_config =
10779                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
10780         }
10781
10782         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
10783                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
10784                 if (IS_ERR(connkeys))
10785                         return PTR_ERR(connkeys);
10786         }
10787
10788         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
10789                 connect.flags |= ASSOC_REQ_DISABLE_HT;
10790
10791         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
10792                 memcpy(&connect.ht_capa_mask,
10793                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10794                        sizeof(connect.ht_capa_mask));
10795
10796         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10797                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10798                         kfree_sensitive(connkeys);
10799                         return -EINVAL;
10800                 }
10801                 memcpy(&connect.ht_capa,
10802                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10803                        sizeof(connect.ht_capa));
10804         }
10805
10806         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10807                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10808
10809         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HE]))
10810                 connect.flags |= ASSOC_REQ_DISABLE_HE;
10811
10812         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10813                 memcpy(&connect.vht_capa_mask,
10814                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10815                        sizeof(connect.vht_capa_mask));
10816
10817         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10818                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10819                         kfree_sensitive(connkeys);
10820                         return -EINVAL;
10821                 }
10822                 memcpy(&connect.vht_capa,
10823                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10824                        sizeof(connect.vht_capa));
10825         }
10826
10827         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10828                 if (!((rdev->wiphy.features &
10829                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10830                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10831                     !wiphy_ext_feature_isset(&rdev->wiphy,
10832                                              NL80211_EXT_FEATURE_RRM)) {
10833                         kfree_sensitive(connkeys);
10834                         return -EINVAL;
10835                 }
10836                 connect.flags |= ASSOC_REQ_USE_RRM;
10837         }
10838
10839         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10840         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10841                 kfree_sensitive(connkeys);
10842                 return -EOPNOTSUPP;
10843         }
10844
10845         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10846                 /* bss selection makes no sense if bssid is set */
10847                 if (connect.bssid) {
10848                         kfree_sensitive(connkeys);
10849                         return -EINVAL;
10850                 }
10851
10852                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10853                                        wiphy, &connect.bss_select);
10854                 if (err) {
10855                         kfree_sensitive(connkeys);
10856                         return err;
10857                 }
10858         }
10859
10860         if (wiphy_ext_feature_isset(&rdev->wiphy,
10861                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10862             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10863             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10864             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10865             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10866                 connect.fils_erp_username =
10867                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10868                 connect.fils_erp_username_len =
10869                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10870                 connect.fils_erp_realm =
10871                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10872                 connect.fils_erp_realm_len =
10873                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10874                 connect.fils_erp_next_seq_num =
10875                         nla_get_u16(
10876                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10877                 connect.fils_erp_rrk =
10878                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10879                 connect.fils_erp_rrk_len =
10880                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10881         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10882                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10883                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10884                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10885                 kfree_sensitive(connkeys);
10886                 return -EINVAL;
10887         }
10888
10889         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10890                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10891                         kfree_sensitive(connkeys);
10892                         GENL_SET_ERR_MSG(info,
10893                                          "external auth requires connection ownership");
10894                         return -EINVAL;
10895                 }
10896                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10897         }
10898
10899         wdev_lock(dev->ieee80211_ptr);
10900
10901         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10902                                connect.prev_bssid);
10903         if (err)
10904                 kfree_sensitive(connkeys);
10905
10906         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10907                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10908                 if (connect.bssid)
10909                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10910                                connect.bssid, ETH_ALEN);
10911                 else
10912                         eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid);
10913         }
10914
10915         wdev_unlock(dev->ieee80211_ptr);
10916
10917         return err;
10918 }
10919
10920 static int nl80211_update_connect_params(struct sk_buff *skb,
10921                                          struct genl_info *info)
10922 {
10923         struct cfg80211_connect_params connect = {};
10924         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10925         struct net_device *dev = info->user_ptr[1];
10926         struct wireless_dev *wdev = dev->ieee80211_ptr;
10927         bool fils_sk_offload;
10928         u32 auth_type;
10929         u32 changed = 0;
10930         int ret;
10931
10932         if (!rdev->ops->update_connect_params)
10933                 return -EOPNOTSUPP;
10934
10935         if (info->attrs[NL80211_ATTR_IE]) {
10936                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10937                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10938                 changed |= UPDATE_ASSOC_IES;
10939         }
10940
10941         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10942                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10943
10944         /*
10945          * when driver supports fils-sk offload all attributes must be
10946          * provided. So the else covers "fils-sk-not-all" and
10947          * "no-fils-sk-any".
10948          */
10949         if (fils_sk_offload &&
10950             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10951             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10952             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10953             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10954                 connect.fils_erp_username =
10955                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10956                 connect.fils_erp_username_len =
10957                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10958                 connect.fils_erp_realm =
10959                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10960                 connect.fils_erp_realm_len =
10961                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10962                 connect.fils_erp_next_seq_num =
10963                         nla_get_u16(
10964                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10965                 connect.fils_erp_rrk =
10966                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10967                 connect.fils_erp_rrk_len =
10968                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10969                 changed |= UPDATE_FILS_ERP_INFO;
10970         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10971                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10972                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10973                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10974                 return -EINVAL;
10975         }
10976
10977         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10978                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10979                 if (!nl80211_valid_auth_type(rdev, auth_type,
10980                                              NL80211_CMD_CONNECT))
10981                         return -EINVAL;
10982
10983                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10984                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10985                         return -EINVAL;
10986
10987                 connect.auth_type = auth_type;
10988                 changed |= UPDATE_AUTH_TYPE;
10989         }
10990
10991         wdev_lock(dev->ieee80211_ptr);
10992         if (!wdev->current_bss)
10993                 ret = -ENOLINK;
10994         else
10995                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10996         wdev_unlock(dev->ieee80211_ptr);
10997
10998         return ret;
10999 }
11000
11001 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
11002 {
11003         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11004         struct net_device *dev = info->user_ptr[1];
11005         u16 reason;
11006         int ret;
11007
11008         if (dev->ieee80211_ptr->conn_owner_nlportid &&
11009             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
11010                 return -EPERM;
11011
11012         if (!info->attrs[NL80211_ATTR_REASON_CODE])
11013                 reason = WLAN_REASON_DEAUTH_LEAVING;
11014         else
11015                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
11016
11017         if (reason == 0)
11018                 return -EINVAL;
11019
11020         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11021             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11022                 return -EOPNOTSUPP;
11023
11024         wdev_lock(dev->ieee80211_ptr);
11025         ret = cfg80211_disconnect(rdev, dev, reason, true);
11026         wdev_unlock(dev->ieee80211_ptr);
11027         return ret;
11028 }
11029
11030 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
11031 {
11032         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11033         struct net *net;
11034         int err;
11035
11036         if (info->attrs[NL80211_ATTR_PID]) {
11037                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
11038
11039                 net = get_net_ns_by_pid(pid);
11040         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
11041                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
11042
11043                 net = get_net_ns_by_fd(fd);
11044         } else {
11045                 return -EINVAL;
11046         }
11047
11048         if (IS_ERR(net))
11049                 return PTR_ERR(net);
11050
11051         err = 0;
11052
11053         /* check if anything to do */
11054         if (!net_eq(wiphy_net(&rdev->wiphy), net))
11055                 err = cfg80211_switch_netns(rdev, net);
11056
11057         put_net(net);
11058         return err;
11059 }
11060
11061 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
11062 {
11063         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11064         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
11065                         struct cfg80211_pmksa *pmksa) = NULL;
11066         struct net_device *dev = info->user_ptr[1];
11067         struct cfg80211_pmksa pmksa;
11068
11069         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
11070
11071         if (!info->attrs[NL80211_ATTR_PMKID])
11072                 return -EINVAL;
11073
11074         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
11075
11076         if (info->attrs[NL80211_ATTR_MAC]) {
11077                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
11078         } else if (info->attrs[NL80211_ATTR_SSID] &&
11079                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
11080                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
11081                     info->attrs[NL80211_ATTR_PMK])) {
11082                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
11083                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
11084                 pmksa.cache_id =
11085                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
11086         } else {
11087                 return -EINVAL;
11088         }
11089         if (info->attrs[NL80211_ATTR_PMK]) {
11090                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
11091                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
11092         }
11093
11094         if (info->attrs[NL80211_ATTR_PMK_LIFETIME])
11095                 pmksa.pmk_lifetime =
11096                         nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]);
11097
11098         if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD])
11099                 pmksa.pmk_reauth_threshold =
11100                         nla_get_u8(
11101                                 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]);
11102
11103         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11104             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
11105             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
11106               wiphy_ext_feature_isset(&rdev->wiphy,
11107                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
11108                 return -EOPNOTSUPP;
11109
11110         switch (info->genlhdr->cmd) {
11111         case NL80211_CMD_SET_PMKSA:
11112                 rdev_ops = rdev->ops->set_pmksa;
11113                 break;
11114         case NL80211_CMD_DEL_PMKSA:
11115                 rdev_ops = rdev->ops->del_pmksa;
11116                 break;
11117         default:
11118                 WARN_ON(1);
11119                 break;
11120         }
11121
11122         if (!rdev_ops)
11123                 return -EOPNOTSUPP;
11124
11125         return rdev_ops(&rdev->wiphy, dev, &pmksa);
11126 }
11127
11128 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
11129 {
11130         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11131         struct net_device *dev = info->user_ptr[1];
11132
11133         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
11134             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
11135                 return -EOPNOTSUPP;
11136
11137         if (!rdev->ops->flush_pmksa)
11138                 return -EOPNOTSUPP;
11139
11140         return rdev_flush_pmksa(rdev, dev);
11141 }
11142
11143 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
11144 {
11145         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11146         struct net_device *dev = info->user_ptr[1];
11147         u8 action_code, dialog_token;
11148         u32 peer_capability = 0;
11149         u16 status_code;
11150         u8 *peer;
11151         bool initiator;
11152
11153         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11154             !rdev->ops->tdls_mgmt)
11155                 return -EOPNOTSUPP;
11156
11157         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
11158             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
11159             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
11160             !info->attrs[NL80211_ATTR_IE] ||
11161             !info->attrs[NL80211_ATTR_MAC])
11162                 return -EINVAL;
11163
11164         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11165         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
11166         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
11167         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
11168         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
11169         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
11170                 peer_capability =
11171                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
11172
11173         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
11174                               dialog_token, status_code, peer_capability,
11175                               initiator,
11176                               nla_data(info->attrs[NL80211_ATTR_IE]),
11177                               nla_len(info->attrs[NL80211_ATTR_IE]));
11178 }
11179
11180 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
11181 {
11182         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11183         struct net_device *dev = info->user_ptr[1];
11184         enum nl80211_tdls_operation operation;
11185         u8 *peer;
11186
11187         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
11188             !rdev->ops->tdls_oper)
11189                 return -EOPNOTSUPP;
11190
11191         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
11192             !info->attrs[NL80211_ATTR_MAC])
11193                 return -EINVAL;
11194
11195         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
11196         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
11197
11198         return rdev_tdls_oper(rdev, dev, peer, operation);
11199 }
11200
11201 static int nl80211_remain_on_channel(struct sk_buff *skb,
11202                                      struct genl_info *info)
11203 {
11204         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11205         struct wireless_dev *wdev = info->user_ptr[1];
11206         struct cfg80211_chan_def chandef;
11207         const struct cfg80211_chan_def *compat_chandef;
11208         struct sk_buff *msg;
11209         void *hdr;
11210         u64 cookie;
11211         u32 duration;
11212         int err;
11213
11214         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
11215             !info->attrs[NL80211_ATTR_DURATION])
11216                 return -EINVAL;
11217
11218         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11219
11220         if (!rdev->ops->remain_on_channel ||
11221             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
11222                 return -EOPNOTSUPP;
11223
11224         /*
11225          * We should be on that channel for at least a minimum amount of
11226          * time (10ms) but no longer than the driver supports.
11227          */
11228         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11229             duration > rdev->wiphy.max_remain_on_channel_duration)
11230                 return -EINVAL;
11231
11232         err = nl80211_parse_chandef(rdev, info, &chandef);
11233         if (err)
11234                 return err;
11235
11236         wdev_lock(wdev);
11237         if (!cfg80211_off_channel_oper_allowed(wdev) &&
11238             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
11239                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
11240                                                              &chandef);
11241                 if (compat_chandef != &chandef) {
11242                         wdev_unlock(wdev);
11243                         return -EBUSY;
11244                 }
11245         }
11246         wdev_unlock(wdev);
11247
11248         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11249         if (!msg)
11250                 return -ENOMEM;
11251
11252         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11253                              NL80211_CMD_REMAIN_ON_CHANNEL);
11254         if (!hdr) {
11255                 err = -ENOBUFS;
11256                 goto free_msg;
11257         }
11258
11259         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
11260                                      duration, &cookie);
11261
11262         if (err)
11263                 goto free_msg;
11264
11265         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11266                               NL80211_ATTR_PAD))
11267                 goto nla_put_failure;
11268
11269         genlmsg_end(msg, hdr);
11270
11271         return genlmsg_reply(msg, info);
11272
11273  nla_put_failure:
11274         err = -ENOBUFS;
11275  free_msg:
11276         nlmsg_free(msg);
11277         return err;
11278 }
11279
11280 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
11281                                             struct genl_info *info)
11282 {
11283         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11284         struct wireless_dev *wdev = info->user_ptr[1];
11285         u64 cookie;
11286
11287         if (!info->attrs[NL80211_ATTR_COOKIE])
11288                 return -EINVAL;
11289
11290         if (!rdev->ops->cancel_remain_on_channel)
11291                 return -EOPNOTSUPP;
11292
11293         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11294
11295         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
11296 }
11297
11298 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
11299                                        struct genl_info *info)
11300 {
11301         struct cfg80211_bitrate_mask mask;
11302         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11303         struct net_device *dev = info->user_ptr[1];
11304         int err;
11305
11306         if (!rdev->ops->set_bitrate_mask)
11307                 return -EOPNOTSUPP;
11308
11309         err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11310                                             NL80211_ATTR_TX_RATES, &mask,
11311                                             dev, true);
11312         if (err)
11313                 return err;
11314
11315         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
11316 }
11317
11318 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
11319 {
11320         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11321         struct wireless_dev *wdev = info->user_ptr[1];
11322         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
11323
11324         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
11325                 return -EINVAL;
11326
11327         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
11328                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
11329
11330         switch (wdev->iftype) {
11331         case NL80211_IFTYPE_STATION:
11332         case NL80211_IFTYPE_ADHOC:
11333         case NL80211_IFTYPE_P2P_CLIENT:
11334         case NL80211_IFTYPE_AP:
11335         case NL80211_IFTYPE_AP_VLAN:
11336         case NL80211_IFTYPE_MESH_POINT:
11337         case NL80211_IFTYPE_P2P_GO:
11338         case NL80211_IFTYPE_P2P_DEVICE:
11339                 break;
11340         case NL80211_IFTYPE_NAN:
11341         default:
11342                 return -EOPNOTSUPP;
11343         }
11344
11345         /* not much point in registering if we can't reply */
11346         if (!rdev->ops->mgmt_tx)
11347                 return -EOPNOTSUPP;
11348
11349         if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] &&
11350             !wiphy_ext_feature_isset(&rdev->wiphy,
11351                                      NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) {
11352                 GENL_SET_ERR_MSG(info,
11353                                  "multicast RX registrations are not supported");
11354                 return -EOPNOTSUPP;
11355         }
11356
11357         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
11358                                            nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11359                                            nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]),
11360                                            info->attrs[NL80211_ATTR_RECEIVE_MULTICAST],
11361                                            info->extack);
11362 }
11363
11364 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
11365 {
11366         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11367         struct wireless_dev *wdev = info->user_ptr[1];
11368         struct cfg80211_chan_def chandef;
11369         int err;
11370         void *hdr = NULL;
11371         u64 cookie;
11372         struct sk_buff *msg = NULL;
11373         struct cfg80211_mgmt_tx_params params = {
11374                 .dont_wait_for_ack =
11375                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
11376         };
11377
11378         if (!info->attrs[NL80211_ATTR_FRAME])
11379                 return -EINVAL;
11380
11381         if (!rdev->ops->mgmt_tx)
11382                 return -EOPNOTSUPP;
11383
11384         switch (wdev->iftype) {
11385         case NL80211_IFTYPE_P2P_DEVICE:
11386                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
11387                         return -EINVAL;
11388                 break;
11389         case NL80211_IFTYPE_STATION:
11390         case NL80211_IFTYPE_ADHOC:
11391         case NL80211_IFTYPE_P2P_CLIENT:
11392         case NL80211_IFTYPE_AP:
11393         case NL80211_IFTYPE_AP_VLAN:
11394         case NL80211_IFTYPE_MESH_POINT:
11395         case NL80211_IFTYPE_P2P_GO:
11396                 break;
11397         case NL80211_IFTYPE_NAN:
11398         default:
11399                 return -EOPNOTSUPP;
11400         }
11401
11402         if (info->attrs[NL80211_ATTR_DURATION]) {
11403                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11404                         return -EINVAL;
11405                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
11406
11407                 /*
11408                  * We should wait on the channel for at least a minimum amount
11409                  * of time (10ms) but no longer than the driver supports.
11410                  */
11411                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
11412                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
11413                         return -EINVAL;
11414         }
11415
11416         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
11417
11418         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
11419                 return -EINVAL;
11420
11421         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
11422
11423         /* get the channel if any has been specified, otherwise pass NULL to
11424          * the driver. The latter will use the current one
11425          */
11426         chandef.chan = NULL;
11427         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11428                 err = nl80211_parse_chandef(rdev, info, &chandef);
11429                 if (err)
11430                         return err;
11431         }
11432
11433         if (!chandef.chan && params.offchan)
11434                 return -EINVAL;
11435
11436         wdev_lock(wdev);
11437         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
11438                 wdev_unlock(wdev);
11439                 return -EBUSY;
11440         }
11441         wdev_unlock(wdev);
11442
11443         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
11444         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
11445
11446         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
11447                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11448                 int i;
11449
11450                 if (len % sizeof(u16))
11451                         return -EINVAL;
11452
11453                 params.n_csa_offsets = len / sizeof(u16);
11454                 params.csa_offsets =
11455                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
11456
11457                 /* check that all the offsets fit the frame */
11458                 for (i = 0; i < params.n_csa_offsets; i++) {
11459                         if (params.csa_offsets[i] >= params.len)
11460                                 return -EINVAL;
11461                 }
11462         }
11463
11464         if (!params.dont_wait_for_ack) {
11465                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11466                 if (!msg)
11467                         return -ENOMEM;
11468
11469                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11470                                      NL80211_CMD_FRAME);
11471                 if (!hdr) {
11472                         err = -ENOBUFS;
11473                         goto free_msg;
11474                 }
11475         }
11476
11477         params.chan = chandef.chan;
11478         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
11479         if (err)
11480                 goto free_msg;
11481
11482         if (msg) {
11483                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
11484                                       NL80211_ATTR_PAD))
11485                         goto nla_put_failure;
11486
11487                 genlmsg_end(msg, hdr);
11488                 return genlmsg_reply(msg, info);
11489         }
11490
11491         return 0;
11492
11493  nla_put_failure:
11494         err = -ENOBUFS;
11495  free_msg:
11496         nlmsg_free(msg);
11497         return err;
11498 }
11499
11500 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
11501 {
11502         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11503         struct wireless_dev *wdev = info->user_ptr[1];
11504         u64 cookie;
11505
11506         if (!info->attrs[NL80211_ATTR_COOKIE])
11507                 return -EINVAL;
11508
11509         if (!rdev->ops->mgmt_tx_cancel_wait)
11510                 return -EOPNOTSUPP;
11511
11512         switch (wdev->iftype) {
11513         case NL80211_IFTYPE_STATION:
11514         case NL80211_IFTYPE_ADHOC:
11515         case NL80211_IFTYPE_P2P_CLIENT:
11516         case NL80211_IFTYPE_AP:
11517         case NL80211_IFTYPE_AP_VLAN:
11518         case NL80211_IFTYPE_P2P_GO:
11519         case NL80211_IFTYPE_P2P_DEVICE:
11520                 break;
11521         case NL80211_IFTYPE_NAN:
11522         default:
11523                 return -EOPNOTSUPP;
11524         }
11525
11526         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
11527
11528         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
11529 }
11530
11531 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
11532 {
11533         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11534         struct wireless_dev *wdev;
11535         struct net_device *dev = info->user_ptr[1];
11536         u8 ps_state;
11537         bool state;
11538         int err;
11539
11540         if (!info->attrs[NL80211_ATTR_PS_STATE])
11541                 return -EINVAL;
11542
11543         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
11544
11545         wdev = dev->ieee80211_ptr;
11546
11547         if (!rdev->ops->set_power_mgmt)
11548                 return -EOPNOTSUPP;
11549
11550         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
11551
11552         if (state == wdev->ps)
11553                 return 0;
11554
11555         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
11556         if (!err)
11557                 wdev->ps = state;
11558         return err;
11559 }
11560
11561 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
11562 {
11563         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11564         enum nl80211_ps_state ps_state;
11565         struct wireless_dev *wdev;
11566         struct net_device *dev = info->user_ptr[1];
11567         struct sk_buff *msg;
11568         void *hdr;
11569         int err;
11570
11571         wdev = dev->ieee80211_ptr;
11572
11573         if (!rdev->ops->set_power_mgmt)
11574                 return -EOPNOTSUPP;
11575
11576         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11577         if (!msg)
11578                 return -ENOMEM;
11579
11580         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11581                              NL80211_CMD_GET_POWER_SAVE);
11582         if (!hdr) {
11583                 err = -ENOBUFS;
11584                 goto free_msg;
11585         }
11586
11587         if (wdev->ps)
11588                 ps_state = NL80211_PS_ENABLED;
11589         else
11590                 ps_state = NL80211_PS_DISABLED;
11591
11592         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
11593                 goto nla_put_failure;
11594
11595         genlmsg_end(msg, hdr);
11596         return genlmsg_reply(msg, info);
11597
11598  nla_put_failure:
11599         err = -ENOBUFS;
11600  free_msg:
11601         nlmsg_free(msg);
11602         return err;
11603 }
11604
11605 static const struct nla_policy
11606 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
11607         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
11608         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
11609         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
11610         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
11611         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
11612         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
11613         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
11614 };
11615
11616 static int nl80211_set_cqm_txe(struct genl_info *info,
11617                                u32 rate, u32 pkts, u32 intvl)
11618 {
11619         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11620         struct net_device *dev = info->user_ptr[1];
11621         struct wireless_dev *wdev = dev->ieee80211_ptr;
11622
11623         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
11624                 return -EINVAL;
11625
11626         if (!rdev->ops->set_cqm_txe_config)
11627                 return -EOPNOTSUPP;
11628
11629         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11630             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11631                 return -EOPNOTSUPP;
11632
11633         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
11634 }
11635
11636 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
11637                                     struct net_device *dev)
11638 {
11639         struct wireless_dev *wdev = dev->ieee80211_ptr;
11640         s32 last, low, high;
11641         u32 hyst;
11642         int i, n, low_index;
11643         int err;
11644
11645         /* RSSI reporting disabled? */
11646         if (!wdev->cqm_config)
11647                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
11648
11649         /*
11650          * Obtain current RSSI value if possible, if not and no RSSI threshold
11651          * event has been received yet, we should receive an event after a
11652          * connection is established and enough beacons received to calculate
11653          * the average.
11654          */
11655         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
11656             rdev->ops->get_station) {
11657                 struct station_info sinfo = {};
11658                 u8 *mac_addr;
11659
11660                 mac_addr = wdev->current_bss->pub.bssid;
11661
11662                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
11663                 if (err)
11664                         return err;
11665
11666                 cfg80211_sinfo_release_content(&sinfo);
11667                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
11668                         wdev->cqm_config->last_rssi_event_value =
11669                                 (s8) sinfo.rx_beacon_signal_avg;
11670         }
11671
11672         last = wdev->cqm_config->last_rssi_event_value;
11673         hyst = wdev->cqm_config->rssi_hyst;
11674         n = wdev->cqm_config->n_rssi_thresholds;
11675
11676         for (i = 0; i < n; i++) {
11677                 i = array_index_nospec(i, n);
11678                 if (last < wdev->cqm_config->rssi_thresholds[i])
11679                         break;
11680         }
11681
11682         low_index = i - 1;
11683         if (low_index >= 0) {
11684                 low_index = array_index_nospec(low_index, n);
11685                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
11686         } else {
11687                 low = S32_MIN;
11688         }
11689         if (i < n) {
11690                 i = array_index_nospec(i, n);
11691                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
11692         } else {
11693                 high = S32_MAX;
11694         }
11695
11696         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
11697 }
11698
11699 static int nl80211_set_cqm_rssi(struct genl_info *info,
11700                                 const s32 *thresholds, int n_thresholds,
11701                                 u32 hysteresis)
11702 {
11703         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11704         struct net_device *dev = info->user_ptr[1];
11705         struct wireless_dev *wdev = dev->ieee80211_ptr;
11706         int i, err;
11707         s32 prev = S32_MIN;
11708
11709         /* Check all values negative and sorted */
11710         for (i = 0; i < n_thresholds; i++) {
11711                 if (thresholds[i] > 0 || thresholds[i] <= prev)
11712                         return -EINVAL;
11713
11714                 prev = thresholds[i];
11715         }
11716
11717         if (wdev->iftype != NL80211_IFTYPE_STATION &&
11718             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
11719                 return -EOPNOTSUPP;
11720
11721         wdev_lock(wdev);
11722         cfg80211_cqm_config_free(wdev);
11723         wdev_unlock(wdev);
11724
11725         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
11726                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
11727                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
11728
11729                 return rdev_set_cqm_rssi_config(rdev, dev,
11730                                                 thresholds[0], hysteresis);
11731         }
11732
11733         if (!wiphy_ext_feature_isset(&rdev->wiphy,
11734                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
11735                 return -EOPNOTSUPP;
11736
11737         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
11738                 n_thresholds = 0;
11739
11740         wdev_lock(wdev);
11741         if (n_thresholds) {
11742                 struct cfg80211_cqm_config *cqm_config;
11743
11744                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
11745                                      n_thresholds * sizeof(s32), GFP_KERNEL);
11746                 if (!cqm_config) {
11747                         err = -ENOMEM;
11748                         goto unlock;
11749                 }
11750
11751                 cqm_config->rssi_hyst = hysteresis;
11752                 cqm_config->n_rssi_thresholds = n_thresholds;
11753                 memcpy(cqm_config->rssi_thresholds, thresholds,
11754                        n_thresholds * sizeof(s32));
11755
11756                 wdev->cqm_config = cqm_config;
11757         }
11758
11759         err = cfg80211_cqm_rssi_update(rdev, dev);
11760
11761 unlock:
11762         wdev_unlock(wdev);
11763
11764         return err;
11765 }
11766
11767 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
11768 {
11769         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
11770         struct nlattr *cqm;
11771         int err;
11772
11773         cqm = info->attrs[NL80211_ATTR_CQM];
11774         if (!cqm)
11775                 return -EINVAL;
11776
11777         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
11778                                           nl80211_attr_cqm_policy,
11779                                           info->extack);
11780         if (err)
11781                 return err;
11782
11783         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
11784             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
11785                 const s32 *thresholds =
11786                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11787                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
11788                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
11789
11790                 if (len % 4)
11791                         return -EINVAL;
11792
11793                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
11794                                             hysteresis);
11795         }
11796
11797         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
11798             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
11799             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
11800                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
11801                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
11802                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
11803
11804                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
11805         }
11806
11807         return -EINVAL;
11808 }
11809
11810 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
11811 {
11812         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11813         struct net_device *dev = info->user_ptr[1];
11814         struct ocb_setup setup = {};
11815         int err;
11816
11817         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11818         if (err)
11819                 return err;
11820
11821         return cfg80211_join_ocb(rdev, dev, &setup);
11822 }
11823
11824 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11825 {
11826         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11827         struct net_device *dev = info->user_ptr[1];
11828
11829         return cfg80211_leave_ocb(rdev, dev);
11830 }
11831
11832 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11833 {
11834         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11835         struct net_device *dev = info->user_ptr[1];
11836         struct mesh_config cfg;
11837         struct mesh_setup setup;
11838         int err;
11839
11840         /* start with default */
11841         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11842         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11843
11844         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11845                 /* and parse parameters if given */
11846                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11847                 if (err)
11848                         return err;
11849         }
11850
11851         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11852             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11853                 return -EINVAL;
11854
11855         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11856         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11857
11858         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11859             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11860                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11861                         return -EINVAL;
11862
11863         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11864                 setup.beacon_interval =
11865                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11866
11867                 err = cfg80211_validate_beacon_int(rdev,
11868                                                    NL80211_IFTYPE_MESH_POINT,
11869                                                    setup.beacon_interval);
11870                 if (err)
11871                         return err;
11872         }
11873
11874         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11875                 setup.dtim_period =
11876                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11877                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11878                         return -EINVAL;
11879         }
11880
11881         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11882                 /* parse additional setup parameters if given */
11883                 err = nl80211_parse_mesh_setup(info, &setup);
11884                 if (err)
11885                         return err;
11886         }
11887
11888         if (setup.user_mpm)
11889                 cfg.auto_open_plinks = false;
11890
11891         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11892                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11893                 if (err)
11894                         return err;
11895         } else {
11896                 /* __cfg80211_join_mesh() will sort it out */
11897                 setup.chandef.chan = NULL;
11898         }
11899
11900         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11901                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11902                 int n_rates =
11903                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11904                 struct ieee80211_supported_band *sband;
11905
11906                 if (!setup.chandef.chan)
11907                         return -EINVAL;
11908
11909                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11910
11911                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11912                                              &setup.basic_rates);
11913                 if (err)
11914                         return err;
11915         }
11916
11917         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11918                 err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
11919                                                     NL80211_ATTR_TX_RATES,
11920                                                     &setup.beacon_rate,
11921                                                     dev, false);
11922                 if (err)
11923                         return err;
11924
11925                 if (!setup.chandef.chan)
11926                         return -EINVAL;
11927
11928                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11929                                               &setup.beacon_rate);
11930                 if (err)
11931                         return err;
11932         }
11933
11934         setup.userspace_handles_dfs =
11935                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11936
11937         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11938                 int r = validate_pae_over_nl80211(rdev, info);
11939
11940                 if (r < 0)
11941                         return r;
11942
11943                 setup.control_port_over_nl80211 = true;
11944         }
11945
11946         wdev_lock(dev->ieee80211_ptr);
11947         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11948         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11949                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11950         wdev_unlock(dev->ieee80211_ptr);
11951
11952         return err;
11953 }
11954
11955 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11956 {
11957         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11958         struct net_device *dev = info->user_ptr[1];
11959
11960         return cfg80211_leave_mesh(rdev, dev);
11961 }
11962
11963 #ifdef CONFIG_PM
11964 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11965                                         struct cfg80211_registered_device *rdev)
11966 {
11967         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11968         struct nlattr *nl_pats, *nl_pat;
11969         int i, pat_len;
11970
11971         if (!wowlan->n_patterns)
11972                 return 0;
11973
11974         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11975         if (!nl_pats)
11976                 return -ENOBUFS;
11977
11978         for (i = 0; i < wowlan->n_patterns; i++) {
11979                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11980                 if (!nl_pat)
11981                         return -ENOBUFS;
11982                 pat_len = wowlan->patterns[i].pattern_len;
11983                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11984                             wowlan->patterns[i].mask) ||
11985                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11986                             wowlan->patterns[i].pattern) ||
11987                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11988                                 wowlan->patterns[i].pkt_offset))
11989                         return -ENOBUFS;
11990                 nla_nest_end(msg, nl_pat);
11991         }
11992         nla_nest_end(msg, nl_pats);
11993
11994         return 0;
11995 }
11996
11997 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11998                                    struct cfg80211_wowlan_tcp *tcp)
11999 {
12000         struct nlattr *nl_tcp;
12001
12002         if (!tcp)
12003                 return 0;
12004
12005         nl_tcp = nla_nest_start_noflag(msg,
12006                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
12007         if (!nl_tcp)
12008                 return -ENOBUFS;
12009
12010         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
12011             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
12012             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
12013             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
12014             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
12015             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
12016                     tcp->payload_len, tcp->payload) ||
12017             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
12018                         tcp->data_interval) ||
12019             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
12020                     tcp->wake_len, tcp->wake_data) ||
12021             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
12022                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
12023                 return -ENOBUFS;
12024
12025         if (tcp->payload_seq.len &&
12026             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
12027                     sizeof(tcp->payload_seq), &tcp->payload_seq))
12028                 return -ENOBUFS;
12029
12030         if (tcp->payload_tok.len &&
12031             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
12032                     sizeof(tcp->payload_tok) + tcp->tokens_size,
12033                     &tcp->payload_tok))
12034                 return -ENOBUFS;
12035
12036         nla_nest_end(msg, nl_tcp);
12037
12038         return 0;
12039 }
12040
12041 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
12042                                   struct cfg80211_sched_scan_request *req)
12043 {
12044         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
12045         int i;
12046
12047         if (!req)
12048                 return 0;
12049
12050         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
12051         if (!nd)
12052                 return -ENOBUFS;
12053
12054         if (req->n_scan_plans == 1 &&
12055             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
12056                         req->scan_plans[0].interval * 1000))
12057                 return -ENOBUFS;
12058
12059         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
12060                 return -ENOBUFS;
12061
12062         if (req->relative_rssi_set) {
12063                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
12064
12065                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
12066                                req->relative_rssi))
12067                         return -ENOBUFS;
12068
12069                 rssi_adjust.band = req->rssi_adjust.band;
12070                 rssi_adjust.delta = req->rssi_adjust.delta;
12071                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
12072                             sizeof(rssi_adjust), &rssi_adjust))
12073                         return -ENOBUFS;
12074         }
12075
12076         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
12077         if (!freqs)
12078                 return -ENOBUFS;
12079
12080         for (i = 0; i < req->n_channels; i++) {
12081                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
12082                         return -ENOBUFS;
12083         }
12084
12085         nla_nest_end(msg, freqs);
12086
12087         if (req->n_match_sets) {
12088                 matches = nla_nest_start_noflag(msg,
12089                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
12090                 if (!matches)
12091                         return -ENOBUFS;
12092
12093                 for (i = 0; i < req->n_match_sets; i++) {
12094                         match = nla_nest_start_noflag(msg, i);
12095                         if (!match)
12096                                 return -ENOBUFS;
12097
12098                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
12099                                     req->match_sets[i].ssid.ssid_len,
12100                                     req->match_sets[i].ssid.ssid))
12101                                 return -ENOBUFS;
12102                         nla_nest_end(msg, match);
12103                 }
12104                 nla_nest_end(msg, matches);
12105         }
12106
12107         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
12108         if (!scan_plans)
12109                 return -ENOBUFS;
12110
12111         for (i = 0; i < req->n_scan_plans; i++) {
12112                 scan_plan = nla_nest_start_noflag(msg, i + 1);
12113                 if (!scan_plan)
12114                         return -ENOBUFS;
12115
12116                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
12117                                 req->scan_plans[i].interval) ||
12118                     (req->scan_plans[i].iterations &&
12119                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
12120                                  req->scan_plans[i].iterations)))
12121                         return -ENOBUFS;
12122                 nla_nest_end(msg, scan_plan);
12123         }
12124         nla_nest_end(msg, scan_plans);
12125
12126         nla_nest_end(msg, nd);
12127
12128         return 0;
12129 }
12130
12131 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
12132 {
12133         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12134         struct sk_buff *msg;
12135         void *hdr;
12136         u32 size = NLMSG_DEFAULT_SIZE;
12137
12138         if (!rdev->wiphy.wowlan)
12139                 return -EOPNOTSUPP;
12140
12141         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
12142                 /* adjust size to have room for all the data */
12143                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
12144                         rdev->wiphy.wowlan_config->tcp->payload_len +
12145                         rdev->wiphy.wowlan_config->tcp->wake_len +
12146                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
12147         }
12148
12149         msg = nlmsg_new(size, GFP_KERNEL);
12150         if (!msg)
12151                 return -ENOMEM;
12152
12153         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12154                              NL80211_CMD_GET_WOWLAN);
12155         if (!hdr)
12156                 goto nla_put_failure;
12157
12158         if (rdev->wiphy.wowlan_config) {
12159                 struct nlattr *nl_wowlan;
12160
12161                 nl_wowlan = nla_nest_start_noflag(msg,
12162                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
12163                 if (!nl_wowlan)
12164                         goto nla_put_failure;
12165
12166                 if ((rdev->wiphy.wowlan_config->any &&
12167                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
12168                     (rdev->wiphy.wowlan_config->disconnect &&
12169                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
12170                     (rdev->wiphy.wowlan_config->magic_pkt &&
12171                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
12172                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
12173                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
12174                     (rdev->wiphy.wowlan_config->eap_identity_req &&
12175                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
12176                     (rdev->wiphy.wowlan_config->four_way_handshake &&
12177                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
12178                     (rdev->wiphy.wowlan_config->rfkill_release &&
12179                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
12180                         goto nla_put_failure;
12181
12182                 if (nl80211_send_wowlan_patterns(msg, rdev))
12183                         goto nla_put_failure;
12184
12185                 if (nl80211_send_wowlan_tcp(msg,
12186                                             rdev->wiphy.wowlan_config->tcp))
12187                         goto nla_put_failure;
12188
12189                 if (nl80211_send_wowlan_nd(
12190                             msg,
12191                             rdev->wiphy.wowlan_config->nd_config))
12192                         goto nla_put_failure;
12193
12194                 nla_nest_end(msg, nl_wowlan);
12195         }
12196
12197         genlmsg_end(msg, hdr);
12198         return genlmsg_reply(msg, info);
12199
12200 nla_put_failure:
12201         nlmsg_free(msg);
12202         return -ENOBUFS;
12203 }
12204
12205 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
12206                                     struct nlattr *attr,
12207                                     struct cfg80211_wowlan *trig)
12208 {
12209         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
12210         struct cfg80211_wowlan_tcp *cfg;
12211         struct nl80211_wowlan_tcp_data_token *tok = NULL;
12212         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
12213         u32 size;
12214         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
12215         int err, port;
12216
12217         if (!rdev->wiphy.wowlan->tcp)
12218                 return -EINVAL;
12219
12220         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
12221                                           nl80211_wowlan_tcp_policy, NULL);
12222         if (err)
12223                 return err;
12224
12225         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
12226             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
12227             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
12228             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
12229             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
12230             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
12231             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
12232             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
12233                 return -EINVAL;
12234
12235         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
12236         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
12237                 return -EINVAL;
12238
12239         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
12240                         rdev->wiphy.wowlan->tcp->data_interval_max ||
12241             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
12242                 return -EINVAL;
12243
12244         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
12245         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
12246                 return -EINVAL;
12247
12248         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
12249         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
12250                 return -EINVAL;
12251
12252         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
12253                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12254
12255                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
12256                 tokens_size = tokln - sizeof(*tok);
12257
12258                 if (!tok->len || tokens_size % tok->len)
12259                         return -EINVAL;
12260                 if (!rdev->wiphy.wowlan->tcp->tok)
12261                         return -EINVAL;
12262                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
12263                         return -EINVAL;
12264                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
12265                         return -EINVAL;
12266                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
12267                         return -EINVAL;
12268                 if (tok->offset + tok->len > data_size)
12269                         return -EINVAL;
12270         }
12271
12272         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
12273                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
12274                 if (!rdev->wiphy.wowlan->tcp->seq)
12275                         return -EINVAL;
12276                 if (seq->len == 0 || seq->len > 4)
12277                         return -EINVAL;
12278                 if (seq->len + seq->offset > data_size)
12279                         return -EINVAL;
12280         }
12281
12282         size = sizeof(*cfg);
12283         size += data_size;
12284         size += wake_size + wake_mask_size;
12285         size += tokens_size;
12286
12287         cfg = kzalloc(size, GFP_KERNEL);
12288         if (!cfg)
12289                 return -ENOMEM;
12290         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
12291         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
12292         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
12293                ETH_ALEN);
12294         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
12295                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
12296         else
12297                 port = 0;
12298 #ifdef CONFIG_INET
12299         /* allocate a socket and port for it and use it */
12300         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
12301                             IPPROTO_TCP, &cfg->sock, 1);
12302         if (err) {
12303                 kfree(cfg);
12304                 return err;
12305         }
12306         if (inet_csk_get_port(cfg->sock->sk, port)) {
12307                 sock_release(cfg->sock);
12308                 kfree(cfg);
12309                 return -EADDRINUSE;
12310         }
12311         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
12312 #else
12313         if (!port) {
12314                 kfree(cfg);
12315                 return -EINVAL;
12316         }
12317         cfg->src_port = port;
12318 #endif
12319
12320         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
12321         cfg->payload_len = data_size;
12322         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
12323         memcpy((void *)cfg->payload,
12324                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
12325                data_size);
12326         if (seq)
12327                 cfg->payload_seq = *seq;
12328         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
12329         cfg->wake_len = wake_size;
12330         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
12331         memcpy((void *)cfg->wake_data,
12332                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
12333                wake_size);
12334         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
12335                          data_size + wake_size;
12336         memcpy((void *)cfg->wake_mask,
12337                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
12338                wake_mask_size);
12339         if (tok) {
12340                 cfg->tokens_size = tokens_size;
12341                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
12342         }
12343
12344         trig->tcp = cfg;
12345
12346         return 0;
12347 }
12348
12349 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
12350                                    const struct wiphy_wowlan_support *wowlan,
12351                                    struct nlattr *attr,
12352                                    struct cfg80211_wowlan *trig)
12353 {
12354         struct nlattr **tb;
12355         int err;
12356
12357         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
12358         if (!tb)
12359                 return -ENOMEM;
12360
12361         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
12362                 err = -EOPNOTSUPP;
12363                 goto out;
12364         }
12365
12366         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
12367                                           nl80211_policy, NULL);
12368         if (err)
12369                 goto out;
12370
12371         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
12372                                                    wowlan->max_nd_match_sets);
12373         err = PTR_ERR_OR_ZERO(trig->nd_config);
12374         if (err)
12375                 trig->nd_config = NULL;
12376
12377 out:
12378         kfree(tb);
12379         return err;
12380 }
12381
12382 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
12383 {
12384         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12385         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
12386         struct cfg80211_wowlan new_triggers = {};
12387         struct cfg80211_wowlan *ntrig;
12388         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
12389         int err, i;
12390         bool prev_enabled = rdev->wiphy.wowlan_config;
12391         bool regular = false;
12392
12393         if (!wowlan)
12394                 return -EOPNOTSUPP;
12395
12396         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
12397                 cfg80211_rdev_free_wowlan(rdev);
12398                 rdev->wiphy.wowlan_config = NULL;
12399                 goto set_wakeup;
12400         }
12401
12402         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
12403                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
12404                                           nl80211_wowlan_policy, info->extack);
12405         if (err)
12406                 return err;
12407
12408         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
12409                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
12410                         return -EINVAL;
12411                 new_triggers.any = true;
12412         }
12413
12414         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
12415                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
12416                         return -EINVAL;
12417                 new_triggers.disconnect = true;
12418                 regular = true;
12419         }
12420
12421         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
12422                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
12423                         return -EINVAL;
12424                 new_triggers.magic_pkt = true;
12425                 regular = true;
12426         }
12427
12428         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
12429                 return -EINVAL;
12430
12431         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
12432                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
12433                         return -EINVAL;
12434                 new_triggers.gtk_rekey_failure = true;
12435                 regular = true;
12436         }
12437
12438         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
12439                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
12440                         return -EINVAL;
12441                 new_triggers.eap_identity_req = true;
12442                 regular = true;
12443         }
12444
12445         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
12446                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
12447                         return -EINVAL;
12448                 new_triggers.four_way_handshake = true;
12449                 regular = true;
12450         }
12451
12452         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
12453                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
12454                         return -EINVAL;
12455                 new_triggers.rfkill_release = true;
12456                 regular = true;
12457         }
12458
12459         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
12460                 struct nlattr *pat;
12461                 int n_patterns = 0;
12462                 int rem, pat_len, mask_len, pkt_offset;
12463                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12464
12465                 regular = true;
12466
12467                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12468                                     rem)
12469                         n_patterns++;
12470                 if (n_patterns > wowlan->n_patterns)
12471                         return -EINVAL;
12472
12473                 new_triggers.patterns = kcalloc(n_patterns,
12474                                                 sizeof(new_triggers.patterns[0]),
12475                                                 GFP_KERNEL);
12476                 if (!new_triggers.patterns)
12477                         return -ENOMEM;
12478
12479                 new_triggers.n_patterns = n_patterns;
12480                 i = 0;
12481
12482                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
12483                                     rem) {
12484                         u8 *mask_pat;
12485
12486                         err = nla_parse_nested_deprecated(pat_tb,
12487                                                           MAX_NL80211_PKTPAT,
12488                                                           pat,
12489                                                           nl80211_packet_pattern_policy,
12490                                                           info->extack);
12491                         if (err)
12492                                 goto error;
12493
12494                         err = -EINVAL;
12495                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
12496                             !pat_tb[NL80211_PKTPAT_PATTERN])
12497                                 goto error;
12498                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12499                         mask_len = DIV_ROUND_UP(pat_len, 8);
12500                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12501                                 goto error;
12502                         if (pat_len > wowlan->pattern_max_len ||
12503                             pat_len < wowlan->pattern_min_len)
12504                                 goto error;
12505
12506                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
12507                                 pkt_offset = 0;
12508                         else
12509                                 pkt_offset = nla_get_u32(
12510                                         pat_tb[NL80211_PKTPAT_OFFSET]);
12511                         if (pkt_offset > wowlan->max_pkt_offset)
12512                                 goto error;
12513                         new_triggers.patterns[i].pkt_offset = pkt_offset;
12514
12515                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12516                         if (!mask_pat) {
12517                                 err = -ENOMEM;
12518                                 goto error;
12519                         }
12520                         new_triggers.patterns[i].mask = mask_pat;
12521                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12522                                mask_len);
12523                         mask_pat += mask_len;
12524                         new_triggers.patterns[i].pattern = mask_pat;
12525                         new_triggers.patterns[i].pattern_len = pat_len;
12526                         memcpy(mask_pat,
12527                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12528                                pat_len);
12529                         i++;
12530                 }
12531         }
12532
12533         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
12534                 regular = true;
12535                 err = nl80211_parse_wowlan_tcp(
12536                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
12537                         &new_triggers);
12538                 if (err)
12539                         goto error;
12540         }
12541
12542         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
12543                 regular = true;
12544                 err = nl80211_parse_wowlan_nd(
12545                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
12546                         &new_triggers);
12547                 if (err)
12548                         goto error;
12549         }
12550
12551         /* The 'any' trigger means the device continues operating more or less
12552          * as in its normal operation mode and wakes up the host on most of the
12553          * normal interrupts (like packet RX, ...)
12554          * It therefore makes little sense to combine with the more constrained
12555          * wakeup trigger modes.
12556          */
12557         if (new_triggers.any && regular) {
12558                 err = -EINVAL;
12559                 goto error;
12560         }
12561
12562         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
12563         if (!ntrig) {
12564                 err = -ENOMEM;
12565                 goto error;
12566         }
12567         cfg80211_rdev_free_wowlan(rdev);
12568         rdev->wiphy.wowlan_config = ntrig;
12569
12570  set_wakeup:
12571         if (rdev->ops->set_wakeup &&
12572             prev_enabled != !!rdev->wiphy.wowlan_config)
12573                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
12574
12575         return 0;
12576  error:
12577         for (i = 0; i < new_triggers.n_patterns; i++)
12578                 kfree(new_triggers.patterns[i].mask);
12579         kfree(new_triggers.patterns);
12580         if (new_triggers.tcp && new_triggers.tcp->sock)
12581                 sock_release(new_triggers.tcp->sock);
12582         kfree(new_triggers.tcp);
12583         kfree(new_triggers.nd_config);
12584         return err;
12585 }
12586 #endif
12587
12588 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
12589                                        struct cfg80211_registered_device *rdev)
12590 {
12591         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
12592         int i, j, pat_len;
12593         struct cfg80211_coalesce_rules *rule;
12594
12595         if (!rdev->coalesce->n_rules)
12596                 return 0;
12597
12598         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
12599         if (!nl_rules)
12600                 return -ENOBUFS;
12601
12602         for (i = 0; i < rdev->coalesce->n_rules; i++) {
12603                 nl_rule = nla_nest_start_noflag(msg, i + 1);
12604                 if (!nl_rule)
12605                         return -ENOBUFS;
12606
12607                 rule = &rdev->coalesce->rules[i];
12608                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
12609                                 rule->delay))
12610                         return -ENOBUFS;
12611
12612                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
12613                                 rule->condition))
12614                         return -ENOBUFS;
12615
12616                 nl_pats = nla_nest_start_noflag(msg,
12617                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
12618                 if (!nl_pats)
12619                         return -ENOBUFS;
12620
12621                 for (j = 0; j < rule->n_patterns; j++) {
12622                         nl_pat = nla_nest_start_noflag(msg, j + 1);
12623                         if (!nl_pat)
12624                                 return -ENOBUFS;
12625                         pat_len = rule->patterns[j].pattern_len;
12626                         if (nla_put(msg, NL80211_PKTPAT_MASK,
12627                                     DIV_ROUND_UP(pat_len, 8),
12628                                     rule->patterns[j].mask) ||
12629                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
12630                                     rule->patterns[j].pattern) ||
12631                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
12632                                         rule->patterns[j].pkt_offset))
12633                                 return -ENOBUFS;
12634                         nla_nest_end(msg, nl_pat);
12635                 }
12636                 nla_nest_end(msg, nl_pats);
12637                 nla_nest_end(msg, nl_rule);
12638         }
12639         nla_nest_end(msg, nl_rules);
12640
12641         return 0;
12642 }
12643
12644 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
12645 {
12646         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12647         struct sk_buff *msg;
12648         void *hdr;
12649
12650         if (!rdev->wiphy.coalesce)
12651                 return -EOPNOTSUPP;
12652
12653         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12654         if (!msg)
12655                 return -ENOMEM;
12656
12657         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12658                              NL80211_CMD_GET_COALESCE);
12659         if (!hdr)
12660                 goto nla_put_failure;
12661
12662         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
12663                 goto nla_put_failure;
12664
12665         genlmsg_end(msg, hdr);
12666         return genlmsg_reply(msg, info);
12667
12668 nla_put_failure:
12669         nlmsg_free(msg);
12670         return -ENOBUFS;
12671 }
12672
12673 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
12674 {
12675         struct cfg80211_coalesce *coalesce = rdev->coalesce;
12676         int i, j;
12677         struct cfg80211_coalesce_rules *rule;
12678
12679         if (!coalesce)
12680                 return;
12681
12682         for (i = 0; i < coalesce->n_rules; i++) {
12683                 rule = &coalesce->rules[i];
12684                 for (j = 0; j < rule->n_patterns; j++)
12685                         kfree(rule->patterns[j].mask);
12686                 kfree(rule->patterns);
12687         }
12688         kfree(coalesce->rules);
12689         kfree(coalesce);
12690         rdev->coalesce = NULL;
12691 }
12692
12693 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
12694                                        struct nlattr *rule,
12695                                        struct cfg80211_coalesce_rules *new_rule)
12696 {
12697         int err, i;
12698         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12699         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
12700         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
12701         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
12702
12703         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
12704                                           rule, nl80211_coalesce_policy, NULL);
12705         if (err)
12706                 return err;
12707
12708         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
12709                 new_rule->delay =
12710                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
12711         if (new_rule->delay > coalesce->max_delay)
12712                 return -EINVAL;
12713
12714         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
12715                 new_rule->condition =
12716                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
12717
12718         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
12719                 return -EINVAL;
12720
12721         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12722                             rem)
12723                 n_patterns++;
12724         if (n_patterns > coalesce->n_patterns)
12725                 return -EINVAL;
12726
12727         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
12728                                      GFP_KERNEL);
12729         if (!new_rule->patterns)
12730                 return -ENOMEM;
12731
12732         new_rule->n_patterns = n_patterns;
12733         i = 0;
12734
12735         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
12736                             rem) {
12737                 u8 *mask_pat;
12738
12739                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
12740                                                   pat,
12741                                                   nl80211_packet_pattern_policy,
12742                                                   NULL);
12743                 if (err)
12744                         return err;
12745
12746                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
12747                     !pat_tb[NL80211_PKTPAT_PATTERN])
12748                         return -EINVAL;
12749                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
12750                 mask_len = DIV_ROUND_UP(pat_len, 8);
12751                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
12752                         return -EINVAL;
12753                 if (pat_len > coalesce->pattern_max_len ||
12754                     pat_len < coalesce->pattern_min_len)
12755                         return -EINVAL;
12756
12757                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
12758                         pkt_offset = 0;
12759                 else
12760                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
12761                 if (pkt_offset > coalesce->max_pkt_offset)
12762                         return -EINVAL;
12763                 new_rule->patterns[i].pkt_offset = pkt_offset;
12764
12765                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
12766                 if (!mask_pat)
12767                         return -ENOMEM;
12768
12769                 new_rule->patterns[i].mask = mask_pat;
12770                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
12771                        mask_len);
12772
12773                 mask_pat += mask_len;
12774                 new_rule->patterns[i].pattern = mask_pat;
12775                 new_rule->patterns[i].pattern_len = pat_len;
12776                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
12777                        pat_len);
12778                 i++;
12779         }
12780
12781         return 0;
12782 }
12783
12784 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
12785 {
12786         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12787         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
12788         struct cfg80211_coalesce new_coalesce = {};
12789         struct cfg80211_coalesce *n_coalesce;
12790         int err, rem_rule, n_rules = 0, i, j;
12791         struct nlattr *rule;
12792         struct cfg80211_coalesce_rules *tmp_rule;
12793
12794         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
12795                 return -EOPNOTSUPP;
12796
12797         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
12798                 cfg80211_rdev_free_coalesce(rdev);
12799                 rdev_set_coalesce(rdev, NULL);
12800                 return 0;
12801         }
12802
12803         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12804                             rem_rule)
12805                 n_rules++;
12806         if (n_rules > coalesce->n_rules)
12807                 return -EINVAL;
12808
12809         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
12810                                      GFP_KERNEL);
12811         if (!new_coalesce.rules)
12812                 return -ENOMEM;
12813
12814         new_coalesce.n_rules = n_rules;
12815         i = 0;
12816
12817         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
12818                             rem_rule) {
12819                 err = nl80211_parse_coalesce_rule(rdev, rule,
12820                                                   &new_coalesce.rules[i]);
12821                 if (err)
12822                         goto error;
12823
12824                 i++;
12825         }
12826
12827         err = rdev_set_coalesce(rdev, &new_coalesce);
12828         if (err)
12829                 goto error;
12830
12831         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12832         if (!n_coalesce) {
12833                 err = -ENOMEM;
12834                 goto error;
12835         }
12836         cfg80211_rdev_free_coalesce(rdev);
12837         rdev->coalesce = n_coalesce;
12838
12839         return 0;
12840 error:
12841         for (i = 0; i < new_coalesce.n_rules; i++) {
12842                 tmp_rule = &new_coalesce.rules[i];
12843                 for (j = 0; j < tmp_rule->n_patterns; j++)
12844                         kfree(tmp_rule->patterns[j].mask);
12845                 kfree(tmp_rule->patterns);
12846         }
12847         kfree(new_coalesce.rules);
12848
12849         return err;
12850 }
12851
12852 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12853 {
12854         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12855         struct net_device *dev = info->user_ptr[1];
12856         struct wireless_dev *wdev = dev->ieee80211_ptr;
12857         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12858         struct cfg80211_gtk_rekey_data rekey_data = {};
12859         int err;
12860
12861         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12862                 return -EINVAL;
12863
12864         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12865                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12866                                           nl80211_rekey_policy, info->extack);
12867         if (err)
12868                 return err;
12869
12870         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12871             !tb[NL80211_REKEY_DATA_KCK])
12872                 return -EINVAL;
12873         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN &&
12874             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12875               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN))
12876                 return -ERANGE;
12877         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN &&
12878             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK &&
12879               nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN))
12880                 return -ERANGE;
12881
12882         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12883         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12884         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12885         rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]);
12886         rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]);
12887         if (tb[NL80211_REKEY_DATA_AKM])
12888                 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]);
12889
12890         wdev_lock(wdev);
12891         if (!wdev->current_bss) {
12892                 err = -ENOTCONN;
12893                 goto out;
12894         }
12895
12896         if (!rdev->ops->set_rekey_data) {
12897                 err = -EOPNOTSUPP;
12898                 goto out;
12899         }
12900
12901         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12902  out:
12903         wdev_unlock(wdev);
12904         return err;
12905 }
12906
12907 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12908                                              struct genl_info *info)
12909 {
12910         struct net_device *dev = info->user_ptr[1];
12911         struct wireless_dev *wdev = dev->ieee80211_ptr;
12912
12913         if (wdev->iftype != NL80211_IFTYPE_AP &&
12914             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12915                 return -EINVAL;
12916
12917         if (wdev->ap_unexpected_nlportid)
12918                 return -EBUSY;
12919
12920         wdev->ap_unexpected_nlportid = info->snd_portid;
12921         return 0;
12922 }
12923
12924 static int nl80211_probe_client(struct sk_buff *skb,
12925                                 struct genl_info *info)
12926 {
12927         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12928         struct net_device *dev = info->user_ptr[1];
12929         struct wireless_dev *wdev = dev->ieee80211_ptr;
12930         struct sk_buff *msg;
12931         void *hdr;
12932         const u8 *addr;
12933         u64 cookie;
12934         int err;
12935
12936         if (wdev->iftype != NL80211_IFTYPE_AP &&
12937             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12938                 return -EOPNOTSUPP;
12939
12940         if (!info->attrs[NL80211_ATTR_MAC])
12941                 return -EINVAL;
12942
12943         if (!rdev->ops->probe_client)
12944                 return -EOPNOTSUPP;
12945
12946         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12947         if (!msg)
12948                 return -ENOMEM;
12949
12950         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12951                              NL80211_CMD_PROBE_CLIENT);
12952         if (!hdr) {
12953                 err = -ENOBUFS;
12954                 goto free_msg;
12955         }
12956
12957         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12958
12959         err = rdev_probe_client(rdev, dev, addr, &cookie);
12960         if (err)
12961                 goto free_msg;
12962
12963         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12964                               NL80211_ATTR_PAD))
12965                 goto nla_put_failure;
12966
12967         genlmsg_end(msg, hdr);
12968
12969         return genlmsg_reply(msg, info);
12970
12971  nla_put_failure:
12972         err = -ENOBUFS;
12973  free_msg:
12974         nlmsg_free(msg);
12975         return err;
12976 }
12977
12978 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12979 {
12980         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12981         struct cfg80211_beacon_registration *reg, *nreg;
12982         int rv;
12983
12984         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12985                 return -EOPNOTSUPP;
12986
12987         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12988         if (!nreg)
12989                 return -ENOMEM;
12990
12991         /* First, check if already registered. */
12992         spin_lock_bh(&rdev->beacon_registrations_lock);
12993         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12994                 if (reg->nlportid == info->snd_portid) {
12995                         rv = -EALREADY;
12996                         goto out_err;
12997                 }
12998         }
12999         /* Add it to the list */
13000         nreg->nlportid = info->snd_portid;
13001         list_add(&nreg->list, &rdev->beacon_registrations);
13002
13003         spin_unlock_bh(&rdev->beacon_registrations_lock);
13004
13005         return 0;
13006 out_err:
13007         spin_unlock_bh(&rdev->beacon_registrations_lock);
13008         kfree(nreg);
13009         return rv;
13010 }
13011
13012 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
13013 {
13014         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13015         struct wireless_dev *wdev = info->user_ptr[1];
13016         int err;
13017
13018         if (!rdev->ops->start_p2p_device)
13019                 return -EOPNOTSUPP;
13020
13021         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13022                 return -EOPNOTSUPP;
13023
13024         if (wdev_running(wdev))
13025                 return 0;
13026
13027         if (rfkill_blocked(rdev->rfkill))
13028                 return -ERFKILL;
13029
13030         err = rdev_start_p2p_device(rdev, wdev);
13031         if (err)
13032                 return err;
13033
13034         wdev->is_running = true;
13035         rdev->opencount++;
13036
13037         return 0;
13038 }
13039
13040 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
13041 {
13042         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13043         struct wireless_dev *wdev = info->user_ptr[1];
13044
13045         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
13046                 return -EOPNOTSUPP;
13047
13048         if (!rdev->ops->stop_p2p_device)
13049                 return -EOPNOTSUPP;
13050
13051         cfg80211_stop_p2p_device(rdev, wdev);
13052
13053         return 0;
13054 }
13055
13056 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
13057 {
13058         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13059         struct wireless_dev *wdev = info->user_ptr[1];
13060         struct cfg80211_nan_conf conf = {};
13061         int err;
13062
13063         if (wdev->iftype != NL80211_IFTYPE_NAN)
13064                 return -EOPNOTSUPP;
13065
13066         if (wdev_running(wdev))
13067                 return -EEXIST;
13068
13069         if (rfkill_blocked(rdev->rfkill))
13070                 return -ERFKILL;
13071
13072         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
13073                 return -EINVAL;
13074
13075         conf.master_pref =
13076                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13077
13078         if (info->attrs[NL80211_ATTR_BANDS]) {
13079                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13080
13081                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13082                         return -EOPNOTSUPP;
13083
13084                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13085                         return -EINVAL;
13086
13087                 conf.bands = bands;
13088         }
13089
13090         err = rdev_start_nan(rdev, wdev, &conf);
13091         if (err)
13092                 return err;
13093
13094         wdev->is_running = true;
13095         rdev->opencount++;
13096
13097         return 0;
13098 }
13099
13100 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
13101 {
13102         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13103         struct wireless_dev *wdev = info->user_ptr[1];
13104
13105         if (wdev->iftype != NL80211_IFTYPE_NAN)
13106                 return -EOPNOTSUPP;
13107
13108         cfg80211_stop_nan(rdev, wdev);
13109
13110         return 0;
13111 }
13112
13113 static int validate_nan_filter(struct nlattr *filter_attr)
13114 {
13115         struct nlattr *attr;
13116         int len = 0, n_entries = 0, rem;
13117
13118         nla_for_each_nested(attr, filter_attr, rem) {
13119                 len += nla_len(attr);
13120                 n_entries++;
13121         }
13122
13123         if (len >= U8_MAX)
13124                 return -EINVAL;
13125
13126         return n_entries;
13127 }
13128
13129 static int handle_nan_filter(struct nlattr *attr_filter,
13130                              struct cfg80211_nan_func *func,
13131                              bool tx)
13132 {
13133         struct nlattr *attr;
13134         int n_entries, rem, i;
13135         struct cfg80211_nan_func_filter *filter;
13136
13137         n_entries = validate_nan_filter(attr_filter);
13138         if (n_entries < 0)
13139                 return n_entries;
13140
13141         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
13142
13143         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
13144         if (!filter)
13145                 return -ENOMEM;
13146
13147         i = 0;
13148         nla_for_each_nested(attr, attr_filter, rem) {
13149                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
13150                 filter[i].len = nla_len(attr);
13151                 i++;
13152         }
13153         if (tx) {
13154                 func->num_tx_filters = n_entries;
13155                 func->tx_filters = filter;
13156         } else {
13157                 func->num_rx_filters = n_entries;
13158                 func->rx_filters = filter;
13159         }
13160
13161         return 0;
13162 }
13163
13164 static int nl80211_nan_add_func(struct sk_buff *skb,
13165                                 struct genl_info *info)
13166 {
13167         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13168         struct wireless_dev *wdev = info->user_ptr[1];
13169         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
13170         struct cfg80211_nan_func *func;
13171         struct sk_buff *msg = NULL;
13172         void *hdr = NULL;
13173         int err = 0;
13174
13175         if (wdev->iftype != NL80211_IFTYPE_NAN)
13176                 return -EOPNOTSUPP;
13177
13178         if (!wdev_running(wdev))
13179                 return -ENOTCONN;
13180
13181         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
13182                 return -EINVAL;
13183
13184         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
13185                                           info->attrs[NL80211_ATTR_NAN_FUNC],
13186                                           nl80211_nan_func_policy,
13187                                           info->extack);
13188         if (err)
13189                 return err;
13190
13191         func = kzalloc(sizeof(*func), GFP_KERNEL);
13192         if (!func)
13193                 return -ENOMEM;
13194
13195         func->cookie = cfg80211_assign_cookie(rdev);
13196
13197         if (!tb[NL80211_NAN_FUNC_TYPE]) {
13198                 err = -EINVAL;
13199                 goto out;
13200         }
13201
13202
13203         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
13204
13205         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
13206                 err = -EINVAL;
13207                 goto out;
13208         }
13209
13210         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
13211                sizeof(func->service_id));
13212
13213         func->close_range =
13214                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
13215
13216         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
13217                 func->serv_spec_info_len =
13218                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
13219                 func->serv_spec_info =
13220                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
13221                                 func->serv_spec_info_len,
13222                                 GFP_KERNEL);
13223                 if (!func->serv_spec_info) {
13224                         err = -ENOMEM;
13225                         goto out;
13226                 }
13227         }
13228
13229         if (tb[NL80211_NAN_FUNC_TTL])
13230                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
13231
13232         switch (func->type) {
13233         case NL80211_NAN_FUNC_PUBLISH:
13234                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
13235                         err = -EINVAL;
13236                         goto out;
13237                 }
13238
13239                 func->publish_type =
13240                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
13241                 func->publish_bcast =
13242                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
13243
13244                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
13245                         func->publish_bcast) {
13246                         err = -EINVAL;
13247                         goto out;
13248                 }
13249                 break;
13250         case NL80211_NAN_FUNC_SUBSCRIBE:
13251                 func->subscribe_active =
13252                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
13253                 break;
13254         case NL80211_NAN_FUNC_FOLLOW_UP:
13255                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
13256                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
13257                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
13258                         err = -EINVAL;
13259                         goto out;
13260                 }
13261
13262                 func->followup_id =
13263                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
13264                 func->followup_reqid =
13265                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
13266                 memcpy(func->followup_dest.addr,
13267                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
13268                        sizeof(func->followup_dest.addr));
13269                 if (func->ttl) {
13270                         err = -EINVAL;
13271                         goto out;
13272                 }
13273                 break;
13274         default:
13275                 err = -EINVAL;
13276                 goto out;
13277         }
13278
13279         if (tb[NL80211_NAN_FUNC_SRF]) {
13280                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
13281
13282                 err = nla_parse_nested_deprecated(srf_tb,
13283                                                   NL80211_NAN_SRF_ATTR_MAX,
13284                                                   tb[NL80211_NAN_FUNC_SRF],
13285                                                   nl80211_nan_srf_policy,
13286                                                   info->extack);
13287                 if (err)
13288                         goto out;
13289
13290                 func->srf_include =
13291                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
13292
13293                 if (srf_tb[NL80211_NAN_SRF_BF]) {
13294                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
13295                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
13296                                 err = -EINVAL;
13297                                 goto out;
13298                         }
13299
13300                         func->srf_bf_len =
13301                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
13302                         func->srf_bf =
13303                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
13304                                         func->srf_bf_len, GFP_KERNEL);
13305                         if (!func->srf_bf) {
13306                                 err = -ENOMEM;
13307                                 goto out;
13308                         }
13309
13310                         func->srf_bf_idx =
13311                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
13312                 } else {
13313                         struct nlattr *attr, *mac_attr =
13314                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
13315                         int n_entries, rem, i = 0;
13316
13317                         if (!mac_attr) {
13318                                 err = -EINVAL;
13319                                 goto out;
13320                         }
13321
13322                         n_entries = validate_acl_mac_addrs(mac_attr);
13323                         if (n_entries <= 0) {
13324                                 err = -EINVAL;
13325                                 goto out;
13326                         }
13327
13328                         func->srf_num_macs = n_entries;
13329                         func->srf_macs =
13330                                 kcalloc(n_entries, sizeof(*func->srf_macs),
13331                                         GFP_KERNEL);
13332                         if (!func->srf_macs) {
13333                                 err = -ENOMEM;
13334                                 goto out;
13335                         }
13336
13337                         nla_for_each_nested(attr, mac_attr, rem)
13338                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
13339                                        sizeof(*func->srf_macs));
13340                 }
13341         }
13342
13343         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
13344                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
13345                                         func, true);
13346                 if (err)
13347                         goto out;
13348         }
13349
13350         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
13351                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
13352                                         func, false);
13353                 if (err)
13354                         goto out;
13355         }
13356
13357         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13358         if (!msg) {
13359                 err = -ENOMEM;
13360                 goto out;
13361         }
13362
13363         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13364                              NL80211_CMD_ADD_NAN_FUNCTION);
13365         /* This can't really happen - we just allocated 4KB */
13366         if (WARN_ON(!hdr)) {
13367                 err = -ENOMEM;
13368                 goto out;
13369         }
13370
13371         err = rdev_add_nan_func(rdev, wdev, func);
13372 out:
13373         if (err < 0) {
13374                 cfg80211_free_nan_func(func);
13375                 nlmsg_free(msg);
13376                 return err;
13377         }
13378
13379         /* propagate the instance id and cookie to userspace  */
13380         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
13381                               NL80211_ATTR_PAD))
13382                 goto nla_put_failure;
13383
13384         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13385         if (!func_attr)
13386                 goto nla_put_failure;
13387
13388         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
13389                        func->instance_id))
13390                 goto nla_put_failure;
13391
13392         nla_nest_end(msg, func_attr);
13393
13394         genlmsg_end(msg, hdr);
13395         return genlmsg_reply(msg, info);
13396
13397 nla_put_failure:
13398         nlmsg_free(msg);
13399         return -ENOBUFS;
13400 }
13401
13402 static int nl80211_nan_del_func(struct sk_buff *skb,
13403                                struct genl_info *info)
13404 {
13405         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13406         struct wireless_dev *wdev = info->user_ptr[1];
13407         u64 cookie;
13408
13409         if (wdev->iftype != NL80211_IFTYPE_NAN)
13410                 return -EOPNOTSUPP;
13411
13412         if (!wdev_running(wdev))
13413                 return -ENOTCONN;
13414
13415         if (!info->attrs[NL80211_ATTR_COOKIE])
13416                 return -EINVAL;
13417
13418         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
13419
13420         rdev_del_nan_func(rdev, wdev, cookie);
13421
13422         return 0;
13423 }
13424
13425 static int nl80211_nan_change_config(struct sk_buff *skb,
13426                                      struct genl_info *info)
13427 {
13428         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13429         struct wireless_dev *wdev = info->user_ptr[1];
13430         struct cfg80211_nan_conf conf = {};
13431         u32 changed = 0;
13432
13433         if (wdev->iftype != NL80211_IFTYPE_NAN)
13434                 return -EOPNOTSUPP;
13435
13436         if (!wdev_running(wdev))
13437                 return -ENOTCONN;
13438
13439         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
13440                 conf.master_pref =
13441                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
13442                 if (conf.master_pref <= 1 || conf.master_pref == 255)
13443                         return -EINVAL;
13444
13445                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
13446         }
13447
13448         if (info->attrs[NL80211_ATTR_BANDS]) {
13449                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
13450
13451                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
13452                         return -EOPNOTSUPP;
13453
13454                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
13455                         return -EINVAL;
13456
13457                 conf.bands = bands;
13458                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
13459         }
13460
13461         if (!changed)
13462                 return -EINVAL;
13463
13464         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
13465 }
13466
13467 void cfg80211_nan_match(struct wireless_dev *wdev,
13468                         struct cfg80211_nan_match_params *match, gfp_t gfp)
13469 {
13470         struct wiphy *wiphy = wdev->wiphy;
13471         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13472         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
13473         struct sk_buff *msg;
13474         void *hdr;
13475
13476         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
13477                 return;
13478
13479         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13480         if (!msg)
13481                 return;
13482
13483         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
13484         if (!hdr) {
13485                 nlmsg_free(msg);
13486                 return;
13487         }
13488
13489         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13490             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13491                                          wdev->netdev->ifindex)) ||
13492             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13493                               NL80211_ATTR_PAD))
13494                 goto nla_put_failure;
13495
13496         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
13497                               NL80211_ATTR_PAD) ||
13498             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
13499                 goto nla_put_failure;
13500
13501         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
13502         if (!match_attr)
13503                 goto nla_put_failure;
13504
13505         local_func_attr = nla_nest_start_noflag(msg,
13506                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
13507         if (!local_func_attr)
13508                 goto nla_put_failure;
13509
13510         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
13511                 goto nla_put_failure;
13512
13513         nla_nest_end(msg, local_func_attr);
13514
13515         peer_func_attr = nla_nest_start_noflag(msg,
13516                                                NL80211_NAN_MATCH_FUNC_PEER);
13517         if (!peer_func_attr)
13518                 goto nla_put_failure;
13519
13520         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
13521             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
13522                 goto nla_put_failure;
13523
13524         if (match->info && match->info_len &&
13525             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
13526                     match->info))
13527                 goto nla_put_failure;
13528
13529         nla_nest_end(msg, peer_func_attr);
13530         nla_nest_end(msg, match_attr);
13531         genlmsg_end(msg, hdr);
13532
13533         if (!wdev->owner_nlportid)
13534                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13535                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13536         else
13537                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13538                                 wdev->owner_nlportid);
13539
13540         return;
13541
13542 nla_put_failure:
13543         nlmsg_free(msg);
13544 }
13545 EXPORT_SYMBOL(cfg80211_nan_match);
13546
13547 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
13548                                   u8 inst_id,
13549                                   enum nl80211_nan_func_term_reason reason,
13550                                   u64 cookie, gfp_t gfp)
13551 {
13552         struct wiphy *wiphy = wdev->wiphy;
13553         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13554         struct sk_buff *msg;
13555         struct nlattr *func_attr;
13556         void *hdr;
13557
13558         if (WARN_ON(!inst_id))
13559                 return;
13560
13561         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
13562         if (!msg)
13563                 return;
13564
13565         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
13566         if (!hdr) {
13567                 nlmsg_free(msg);
13568                 return;
13569         }
13570
13571         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13572             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
13573                                          wdev->netdev->ifindex)) ||
13574             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
13575                               NL80211_ATTR_PAD))
13576                 goto nla_put_failure;
13577
13578         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
13579                               NL80211_ATTR_PAD))
13580                 goto nla_put_failure;
13581
13582         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
13583         if (!func_attr)
13584                 goto nla_put_failure;
13585
13586         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
13587             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
13588                 goto nla_put_failure;
13589
13590         nla_nest_end(msg, func_attr);
13591         genlmsg_end(msg, hdr);
13592
13593         if (!wdev->owner_nlportid)
13594                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
13595                                         msg, 0, NL80211_MCGRP_NAN, gfp);
13596         else
13597                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
13598                                 wdev->owner_nlportid);
13599
13600         return;
13601
13602 nla_put_failure:
13603         nlmsg_free(msg);
13604 }
13605 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
13606
13607 static int nl80211_get_protocol_features(struct sk_buff *skb,
13608                                          struct genl_info *info)
13609 {
13610         void *hdr;
13611         struct sk_buff *msg;
13612
13613         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13614         if (!msg)
13615                 return -ENOMEM;
13616
13617         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13618                              NL80211_CMD_GET_PROTOCOL_FEATURES);
13619         if (!hdr)
13620                 goto nla_put_failure;
13621
13622         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
13623                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
13624                 goto nla_put_failure;
13625
13626         genlmsg_end(msg, hdr);
13627         return genlmsg_reply(msg, info);
13628
13629  nla_put_failure:
13630         kfree_skb(msg);
13631         return -ENOBUFS;
13632 }
13633
13634 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
13635 {
13636         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13637         struct cfg80211_update_ft_ies_params ft_params;
13638         struct net_device *dev = info->user_ptr[1];
13639
13640         if (!rdev->ops->update_ft_ies)
13641                 return -EOPNOTSUPP;
13642
13643         if (!info->attrs[NL80211_ATTR_MDID] ||
13644             !info->attrs[NL80211_ATTR_IE])
13645                 return -EINVAL;
13646
13647         memset(&ft_params, 0, sizeof(ft_params));
13648         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
13649         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13650         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13651
13652         return rdev_update_ft_ies(rdev, dev, &ft_params);
13653 }
13654
13655 static int nl80211_crit_protocol_start(struct sk_buff *skb,
13656                                        struct genl_info *info)
13657 {
13658         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13659         struct wireless_dev *wdev = info->user_ptr[1];
13660         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
13661         u16 duration;
13662         int ret;
13663
13664         if (!rdev->ops->crit_proto_start)
13665                 return -EOPNOTSUPP;
13666
13667         if (WARN_ON(!rdev->ops->crit_proto_stop))
13668                 return -EINVAL;
13669
13670         if (rdev->crit_proto_nlportid)
13671                 return -EBUSY;
13672
13673         /* determine protocol if provided */
13674         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
13675                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
13676
13677         if (proto >= NUM_NL80211_CRIT_PROTO)
13678                 return -EINVAL;
13679
13680         /* timeout must be provided */
13681         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
13682                 return -EINVAL;
13683
13684         duration =
13685                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
13686
13687         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
13688         if (!ret)
13689                 rdev->crit_proto_nlportid = info->snd_portid;
13690
13691         return ret;
13692 }
13693
13694 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
13695                                       struct genl_info *info)
13696 {
13697         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13698         struct wireless_dev *wdev = info->user_ptr[1];
13699
13700         if (!rdev->ops->crit_proto_stop)
13701                 return -EOPNOTSUPP;
13702
13703         if (rdev->crit_proto_nlportid) {
13704                 rdev->crit_proto_nlportid = 0;
13705                 rdev_crit_proto_stop(rdev, wdev);
13706         }
13707         return 0;
13708 }
13709
13710 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
13711                                        struct nlattr *attr,
13712                                        struct netlink_ext_ack *extack)
13713 {
13714         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
13715                 if (attr->nla_type & NLA_F_NESTED) {
13716                         NL_SET_ERR_MSG_ATTR(extack, attr,
13717                                             "unexpected nested data");
13718                         return -EINVAL;
13719                 }
13720
13721                 return 0;
13722         }
13723
13724         if (!(attr->nla_type & NLA_F_NESTED)) {
13725                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
13726                 return -EINVAL;
13727         }
13728
13729         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
13730 }
13731
13732 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
13733 {
13734         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13735         struct wireless_dev *wdev =
13736                 __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
13737                                            info->attrs);
13738         int i, err;
13739         u32 vid, subcmd;
13740
13741         if (!rdev->wiphy.vendor_commands)
13742                 return -EOPNOTSUPP;
13743
13744         if (IS_ERR(wdev)) {
13745                 err = PTR_ERR(wdev);
13746                 if (err != -EINVAL)
13747                         return err;
13748                 wdev = NULL;
13749         } else if (wdev->wiphy != &rdev->wiphy) {
13750                 return -EINVAL;
13751         }
13752
13753         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
13754             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
13755                 return -EINVAL;
13756
13757         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
13758         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
13759         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
13760                 const struct wiphy_vendor_command *vcmd;
13761                 void *data = NULL;
13762                 int len = 0;
13763
13764                 vcmd = &rdev->wiphy.vendor_commands[i];
13765
13766                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13767                         continue;
13768
13769                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13770                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13771                         if (!wdev)
13772                                 return -EINVAL;
13773                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13774                             !wdev->netdev)
13775                                 return -EINVAL;
13776
13777                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13778                                 if (!wdev_running(wdev))
13779                                         return -ENETDOWN;
13780                         }
13781                 } else {
13782                         wdev = NULL;
13783                 }
13784
13785                 if (!vcmd->doit)
13786                         return -EOPNOTSUPP;
13787
13788                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
13789                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13790                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
13791
13792                         err = nl80211_vendor_check_policy(vcmd,
13793                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
13794                                         info->extack);
13795                         if (err)
13796                                 return err;
13797                 }
13798
13799                 rdev->cur_cmd_info = info;
13800                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
13801                 rdev->cur_cmd_info = NULL;
13802                 return err;
13803         }
13804
13805         return -EOPNOTSUPP;
13806 }
13807
13808 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
13809                                        struct netlink_callback *cb,
13810                                        struct cfg80211_registered_device **rdev,
13811                                        struct wireless_dev **wdev)
13812 {
13813         struct nlattr **attrbuf;
13814         u32 vid, subcmd;
13815         unsigned int i;
13816         int vcmd_idx = -1;
13817         int err;
13818         void *data = NULL;
13819         unsigned int data_len = 0;
13820
13821         if (cb->args[0]) {
13822                 /* subtract the 1 again here */
13823                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13824                 struct wireless_dev *tmp;
13825
13826                 if (!wiphy)
13827                         return -ENODEV;
13828                 *rdev = wiphy_to_rdev(wiphy);
13829                 *wdev = NULL;
13830
13831                 if (cb->args[1]) {
13832                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13833                                 if (tmp->identifier == cb->args[1] - 1) {
13834                                         *wdev = tmp;
13835                                         break;
13836                                 }
13837                         }
13838                 }
13839
13840                 /* keep rtnl locked in successful case */
13841                 return 0;
13842         }
13843
13844         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13845         if (!attrbuf)
13846                 return -ENOMEM;
13847
13848         err = nlmsg_parse_deprecated(cb->nlh,
13849                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13850                                      attrbuf, nl80211_fam.maxattr,
13851                                      nl80211_policy, NULL);
13852         if (err)
13853                 goto out;
13854
13855         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13856             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13857                 err = -EINVAL;
13858                 goto out;
13859         }
13860
13861         *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
13862         if (IS_ERR(*wdev))
13863                 *wdev = NULL;
13864
13865         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13866         if (IS_ERR(*rdev)) {
13867                 err = PTR_ERR(*rdev);
13868                 goto out;
13869         }
13870
13871         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13872         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13873
13874         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13875                 const struct wiphy_vendor_command *vcmd;
13876
13877                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13878
13879                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13880                         continue;
13881
13882                 if (!vcmd->dumpit) {
13883                         err = -EOPNOTSUPP;
13884                         goto out;
13885                 }
13886
13887                 vcmd_idx = i;
13888                 break;
13889         }
13890
13891         if (vcmd_idx < 0) {
13892                 err = -EOPNOTSUPP;
13893                 goto out;
13894         }
13895
13896         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13897                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13898                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13899
13900                 err = nl80211_vendor_check_policy(
13901                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13902                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13903                                 cb->extack);
13904                 if (err)
13905                         goto out;
13906         }
13907
13908         /* 0 is the first index - add 1 to parse only once */
13909         cb->args[0] = (*rdev)->wiphy_idx + 1;
13910         /* add 1 to know if it was NULL */
13911         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13912         cb->args[2] = vcmd_idx;
13913         cb->args[3] = (unsigned long)data;
13914         cb->args[4] = data_len;
13915
13916         /* keep rtnl locked in successful case */
13917         err = 0;
13918 out:
13919         kfree(attrbuf);
13920         return err;
13921 }
13922
13923 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13924                                    struct netlink_callback *cb)
13925 {
13926         struct cfg80211_registered_device *rdev;
13927         struct wireless_dev *wdev;
13928         unsigned int vcmd_idx;
13929         const struct wiphy_vendor_command *vcmd;
13930         void *data;
13931         int data_len;
13932         int err;
13933         struct nlattr *vendor_data;
13934
13935         rtnl_lock();
13936         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13937         if (err)
13938                 goto out;
13939
13940         vcmd_idx = cb->args[2];
13941         data = (void *)cb->args[3];
13942         data_len = cb->args[4];
13943         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13944
13945         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13946                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13947                 if (!wdev) {
13948                         err = -EINVAL;
13949                         goto out;
13950                 }
13951                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13952                     !wdev->netdev) {
13953                         err = -EINVAL;
13954                         goto out;
13955                 }
13956
13957                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13958                         if (!wdev_running(wdev)) {
13959                                 err = -ENETDOWN;
13960                                 goto out;
13961                         }
13962                 }
13963         }
13964
13965         while (1) {
13966                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13967                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13968                                            NL80211_CMD_VENDOR);
13969                 if (!hdr)
13970                         break;
13971
13972                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13973                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13974                                                wdev_id(wdev),
13975                                                NL80211_ATTR_PAD))) {
13976                         genlmsg_cancel(skb, hdr);
13977                         break;
13978                 }
13979
13980                 vendor_data = nla_nest_start_noflag(skb,
13981                                                     NL80211_ATTR_VENDOR_DATA);
13982                 if (!vendor_data) {
13983                         genlmsg_cancel(skb, hdr);
13984                         break;
13985                 }
13986
13987                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13988                                    (unsigned long *)&cb->args[5]);
13989                 nla_nest_end(skb, vendor_data);
13990
13991                 if (err == -ENOBUFS || err == -ENOENT) {
13992                         genlmsg_cancel(skb, hdr);
13993                         break;
13994                 } else if (err <= 0) {
13995                         genlmsg_cancel(skb, hdr);
13996                         goto out;
13997                 }
13998
13999                 genlmsg_end(skb, hdr);
14000         }
14001
14002         err = skb->len;
14003  out:
14004         rtnl_unlock();
14005         return err;
14006 }
14007
14008 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
14009                                            enum nl80211_commands cmd,
14010                                            enum nl80211_attrs attr,
14011                                            int approxlen)
14012 {
14013         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14014
14015         if (WARN_ON(!rdev->cur_cmd_info))
14016                 return NULL;
14017
14018         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
14019                                            rdev->cur_cmd_info->snd_portid,
14020                                            rdev->cur_cmd_info->snd_seq,
14021                                            cmd, attr, NULL, GFP_KERNEL);
14022 }
14023 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
14024
14025 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
14026 {
14027         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
14028         void *hdr = ((void **)skb->cb)[1];
14029         struct nlattr *data = ((void **)skb->cb)[2];
14030
14031         /* clear CB data for netlink core to own from now on */
14032         memset(skb->cb, 0, sizeof(skb->cb));
14033
14034         if (WARN_ON(!rdev->cur_cmd_info)) {
14035                 kfree_skb(skb);
14036                 return -EINVAL;
14037         }
14038
14039         nla_nest_end(skb, data);
14040         genlmsg_end(skb, hdr);
14041         return genlmsg_reply(skb, rdev->cur_cmd_info);
14042 }
14043 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
14044
14045 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
14046 {
14047         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
14048
14049         if (WARN_ON(!rdev->cur_cmd_info))
14050                 return 0;
14051
14052         return rdev->cur_cmd_info->snd_portid;
14053 }
14054 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
14055
14056 static int nl80211_set_qos_map(struct sk_buff *skb,
14057                                struct genl_info *info)
14058 {
14059         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14060         struct cfg80211_qos_map *qos_map = NULL;
14061         struct net_device *dev = info->user_ptr[1];
14062         u8 *pos, len, num_des, des_len, des;
14063         int ret;
14064
14065         if (!rdev->ops->set_qos_map)
14066                 return -EOPNOTSUPP;
14067
14068         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
14069                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
14070                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
14071
14072                 if (len % 2)
14073                         return -EINVAL;
14074
14075                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
14076                 if (!qos_map)
14077                         return -ENOMEM;
14078
14079                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
14080                 if (num_des) {
14081                         des_len = num_des *
14082                                 sizeof(struct cfg80211_dscp_exception);
14083                         memcpy(qos_map->dscp_exception, pos, des_len);
14084                         qos_map->num_des = num_des;
14085                         for (des = 0; des < num_des; des++) {
14086                                 if (qos_map->dscp_exception[des].up > 7) {
14087                                         kfree(qos_map);
14088                                         return -EINVAL;
14089                                 }
14090                         }
14091                         pos += des_len;
14092                 }
14093                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
14094         }
14095
14096         wdev_lock(dev->ieee80211_ptr);
14097         ret = nl80211_key_allowed(dev->ieee80211_ptr);
14098         if (!ret)
14099                 ret = rdev_set_qos_map(rdev, dev, qos_map);
14100         wdev_unlock(dev->ieee80211_ptr);
14101
14102         kfree(qos_map);
14103         return ret;
14104 }
14105
14106 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
14107 {
14108         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14109         struct net_device *dev = info->user_ptr[1];
14110         struct wireless_dev *wdev = dev->ieee80211_ptr;
14111         const u8 *peer;
14112         u8 tsid, up;
14113         u16 admitted_time = 0;
14114         int err;
14115
14116         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
14117                 return -EOPNOTSUPP;
14118
14119         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
14120             !info->attrs[NL80211_ATTR_USER_PRIO])
14121                 return -EINVAL;
14122
14123         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14124         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
14125
14126         /* WMM uses TIDs 0-7 even for TSPEC */
14127         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
14128                 /* TODO: handle 802.11 TSPEC/admission control
14129                  * need more attributes for that (e.g. BA session requirement);
14130                  * change the WMM adminssion test above to allow both then
14131                  */
14132                 return -EINVAL;
14133         }
14134
14135         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14136
14137         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
14138                 admitted_time =
14139                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
14140                 if (!admitted_time)
14141                         return -EINVAL;
14142         }
14143
14144         wdev_lock(wdev);
14145         switch (wdev->iftype) {
14146         case NL80211_IFTYPE_STATION:
14147         case NL80211_IFTYPE_P2P_CLIENT:
14148                 if (wdev->current_bss)
14149                         break;
14150                 err = -ENOTCONN;
14151                 goto out;
14152         default:
14153                 err = -EOPNOTSUPP;
14154                 goto out;
14155         }
14156
14157         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
14158
14159  out:
14160         wdev_unlock(wdev);
14161         return err;
14162 }
14163
14164 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
14165 {
14166         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14167         struct net_device *dev = info->user_ptr[1];
14168         struct wireless_dev *wdev = dev->ieee80211_ptr;
14169         const u8 *peer;
14170         u8 tsid;
14171         int err;
14172
14173         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
14174                 return -EINVAL;
14175
14176         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
14177         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14178
14179         wdev_lock(wdev);
14180         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
14181         wdev_unlock(wdev);
14182
14183         return err;
14184 }
14185
14186 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
14187                                        struct genl_info *info)
14188 {
14189         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14190         struct net_device *dev = info->user_ptr[1];
14191         struct wireless_dev *wdev = dev->ieee80211_ptr;
14192         struct cfg80211_chan_def chandef = {};
14193         const u8 *addr;
14194         u8 oper_class;
14195         int err;
14196
14197         if (!rdev->ops->tdls_channel_switch ||
14198             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14199                 return -EOPNOTSUPP;
14200
14201         switch (dev->ieee80211_ptr->iftype) {
14202         case NL80211_IFTYPE_STATION:
14203         case NL80211_IFTYPE_P2P_CLIENT:
14204                 break;
14205         default:
14206                 return -EOPNOTSUPP;
14207         }
14208
14209         if (!info->attrs[NL80211_ATTR_MAC] ||
14210             !info->attrs[NL80211_ATTR_OPER_CLASS])
14211                 return -EINVAL;
14212
14213         err = nl80211_parse_chandef(rdev, info, &chandef);
14214         if (err)
14215                 return err;
14216
14217         /*
14218          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
14219          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
14220          * specification is not defined for them.
14221          */
14222         if (chandef.chan->band == NL80211_BAND_2GHZ &&
14223             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
14224             chandef.width != NL80211_CHAN_WIDTH_20)
14225                 return -EINVAL;
14226
14227         /* we will be active on the TDLS link */
14228         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
14229                                            wdev->iftype))
14230                 return -EINVAL;
14231
14232         /* don't allow switching to DFS channels */
14233         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
14234                 return -EINVAL;
14235
14236         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14237         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
14238
14239         wdev_lock(wdev);
14240         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
14241         wdev_unlock(wdev);
14242
14243         return err;
14244 }
14245
14246 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
14247                                               struct genl_info *info)
14248 {
14249         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14250         struct net_device *dev = info->user_ptr[1];
14251         struct wireless_dev *wdev = dev->ieee80211_ptr;
14252         const u8 *addr;
14253
14254         if (!rdev->ops->tdls_channel_switch ||
14255             !rdev->ops->tdls_cancel_channel_switch ||
14256             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
14257                 return -EOPNOTSUPP;
14258
14259         switch (dev->ieee80211_ptr->iftype) {
14260         case NL80211_IFTYPE_STATION:
14261         case NL80211_IFTYPE_P2P_CLIENT:
14262                 break;
14263         default:
14264                 return -EOPNOTSUPP;
14265         }
14266
14267         if (!info->attrs[NL80211_ATTR_MAC])
14268                 return -EINVAL;
14269
14270         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
14271
14272         wdev_lock(wdev);
14273         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
14274         wdev_unlock(wdev);
14275
14276         return 0;
14277 }
14278
14279 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
14280                                             struct genl_info *info)
14281 {
14282         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14283         struct net_device *dev = info->user_ptr[1];
14284         struct wireless_dev *wdev = dev->ieee80211_ptr;
14285         const struct nlattr *nla;
14286         bool enabled;
14287
14288         if (!rdev->ops->set_multicast_to_unicast)
14289                 return -EOPNOTSUPP;
14290
14291         if (wdev->iftype != NL80211_IFTYPE_AP &&
14292             wdev->iftype != NL80211_IFTYPE_P2P_GO)
14293                 return -EOPNOTSUPP;
14294
14295         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
14296         enabled = nla_get_flag(nla);
14297
14298         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
14299 }
14300
14301 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
14302 {
14303         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14304         struct net_device *dev = info->user_ptr[1];
14305         struct wireless_dev *wdev = dev->ieee80211_ptr;
14306         struct cfg80211_pmk_conf pmk_conf = {};
14307         int ret;
14308
14309         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14310             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14311                 return -EOPNOTSUPP;
14312
14313         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14314                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14315                 return -EOPNOTSUPP;
14316
14317         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
14318                 return -EINVAL;
14319
14320         wdev_lock(wdev);
14321         if (!wdev->current_bss) {
14322                 ret = -ENOTCONN;
14323                 goto out;
14324         }
14325
14326         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14327         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
14328                 ret = -EINVAL;
14329                 goto out;
14330         }
14331
14332         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
14333         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
14334         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
14335             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
14336                 ret = -EINVAL;
14337                 goto out;
14338         }
14339
14340         if (info->attrs[NL80211_ATTR_PMKR0_NAME])
14341                 pmk_conf.pmk_r0_name =
14342                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
14343
14344         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
14345 out:
14346         wdev_unlock(wdev);
14347         return ret;
14348 }
14349
14350 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
14351 {
14352         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14353         struct net_device *dev = info->user_ptr[1];
14354         struct wireless_dev *wdev = dev->ieee80211_ptr;
14355         const u8 *aa;
14356         int ret;
14357
14358         if (wdev->iftype != NL80211_IFTYPE_STATION &&
14359             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
14360                 return -EOPNOTSUPP;
14361
14362         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14363                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
14364                 return -EOPNOTSUPP;
14365
14366         if (!info->attrs[NL80211_ATTR_MAC])
14367                 return -EINVAL;
14368
14369         wdev_lock(wdev);
14370         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
14371         ret = rdev_del_pmk(rdev, dev, aa);
14372         wdev_unlock(wdev);
14373
14374         return ret;
14375 }
14376
14377 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
14378 {
14379         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14380         struct net_device *dev = info->user_ptr[1];
14381         struct cfg80211_external_auth_params params;
14382
14383         if (!rdev->ops->external_auth)
14384                 return -EOPNOTSUPP;
14385
14386         if (!info->attrs[NL80211_ATTR_SSID] &&
14387             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
14388             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
14389                 return -EINVAL;
14390
14391         if (!info->attrs[NL80211_ATTR_BSSID])
14392                 return -EINVAL;
14393
14394         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
14395                 return -EINVAL;
14396
14397         memset(&params, 0, sizeof(params));
14398
14399         if (info->attrs[NL80211_ATTR_SSID]) {
14400                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
14401                 if (params.ssid.ssid_len == 0)
14402                         return -EINVAL;
14403                 memcpy(params.ssid.ssid,
14404                        nla_data(info->attrs[NL80211_ATTR_SSID]),
14405                        params.ssid.ssid_len);
14406         }
14407
14408         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
14409                ETH_ALEN);
14410
14411         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14412
14413         if (info->attrs[NL80211_ATTR_PMKID])
14414                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
14415
14416         return rdev_external_auth(rdev, dev, &params);
14417 }
14418
14419 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
14420 {
14421         bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK];
14422         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14423         struct net_device *dev = info->user_ptr[1];
14424         struct wireless_dev *wdev = dev->ieee80211_ptr;
14425         const u8 *buf;
14426         size_t len;
14427         u8 *dest;
14428         u16 proto;
14429         bool noencrypt;
14430         u64 cookie = 0;
14431         int err;
14432
14433         if (!wiphy_ext_feature_isset(&rdev->wiphy,
14434                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
14435                 return -EOPNOTSUPP;
14436
14437         if (!rdev->ops->tx_control_port)
14438                 return -EOPNOTSUPP;
14439
14440         if (!info->attrs[NL80211_ATTR_FRAME] ||
14441             !info->attrs[NL80211_ATTR_MAC] ||
14442             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
14443                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
14444                 return -EINVAL;
14445         }
14446
14447         wdev_lock(wdev);
14448
14449         switch (wdev->iftype) {
14450         case NL80211_IFTYPE_AP:
14451         case NL80211_IFTYPE_P2P_GO:
14452         case NL80211_IFTYPE_MESH_POINT:
14453                 break;
14454         case NL80211_IFTYPE_ADHOC:
14455         case NL80211_IFTYPE_STATION:
14456         case NL80211_IFTYPE_P2P_CLIENT:
14457                 if (wdev->current_bss)
14458                         break;
14459                 err = -ENOTCONN;
14460                 goto out;
14461         default:
14462                 err = -EOPNOTSUPP;
14463                 goto out;
14464         }
14465
14466         wdev_unlock(wdev);
14467
14468         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14469         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14470         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14471         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
14472         noencrypt =
14473                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
14474
14475         err = rdev_tx_control_port(rdev, dev, buf, len,
14476                                    dest, cpu_to_be16(proto), noencrypt,
14477                                    dont_wait_for_ack ? NULL : &cookie);
14478         if (!err && !dont_wait_for_ack)
14479                 nl_set_extack_cookie_u64(info->extack, cookie);
14480         return err;
14481  out:
14482         wdev_unlock(wdev);
14483         return err;
14484 }
14485
14486 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
14487                                            struct genl_info *info)
14488 {
14489         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14490         struct net_device *dev = info->user_ptr[1];
14491         struct wireless_dev *wdev = dev->ieee80211_ptr;
14492         struct cfg80211_ftm_responder_stats ftm_stats = {};
14493         struct sk_buff *msg;
14494         void *hdr;
14495         struct nlattr *ftm_stats_attr;
14496         int err;
14497
14498         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
14499                 return -EOPNOTSUPP;
14500
14501         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
14502         if (err)
14503                 return err;
14504
14505         if (!ftm_stats.filled)
14506                 return -ENODATA;
14507
14508         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14509         if (!msg)
14510                 return -ENOMEM;
14511
14512         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
14513                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
14514         if (!hdr)
14515                 goto nla_put_failure;
14516
14517         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
14518                 goto nla_put_failure;
14519
14520         ftm_stats_attr = nla_nest_start_noflag(msg,
14521                                                NL80211_ATTR_FTM_RESPONDER_STATS);
14522         if (!ftm_stats_attr)
14523                 goto nla_put_failure;
14524
14525 #define SET_FTM(field, name, type)                                       \
14526         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14527             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
14528                              ftm_stats.field))                           \
14529                 goto nla_put_failure; } while (0)
14530 #define SET_FTM_U64(field, name)                                         \
14531         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
14532             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
14533                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
14534                 goto nla_put_failure; } while (0)
14535
14536         SET_FTM(success_num, SUCCESS_NUM, u32);
14537         SET_FTM(partial_num, PARTIAL_NUM, u32);
14538         SET_FTM(failed_num, FAILED_NUM, u32);
14539         SET_FTM(asap_num, ASAP_NUM, u32);
14540         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
14541         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
14542         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
14543         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
14544         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
14545 #undef SET_FTM
14546
14547         nla_nest_end(msg, ftm_stats_attr);
14548
14549         genlmsg_end(msg, hdr);
14550         return genlmsg_reply(msg, info);
14551
14552 nla_put_failure:
14553         nlmsg_free(msg);
14554         return -ENOBUFS;
14555 }
14556
14557 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
14558 {
14559         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14560         struct cfg80211_update_owe_info owe_info;
14561         struct net_device *dev = info->user_ptr[1];
14562
14563         if (!rdev->ops->update_owe_info)
14564                 return -EOPNOTSUPP;
14565
14566         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
14567             !info->attrs[NL80211_ATTR_MAC])
14568                 return -EINVAL;
14569
14570         memset(&owe_info, 0, sizeof(owe_info));
14571         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
14572         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
14573
14574         if (info->attrs[NL80211_ATTR_IE]) {
14575                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
14576                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
14577         }
14578
14579         return rdev_update_owe_info(rdev, dev, &owe_info);
14580 }
14581
14582 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
14583 {
14584         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14585         struct net_device *dev = info->user_ptr[1];
14586         struct wireless_dev *wdev = dev->ieee80211_ptr;
14587         struct station_info sinfo = {};
14588         const u8 *buf;
14589         size_t len;
14590         u8 *dest;
14591         int err;
14592
14593         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
14594                 return -EOPNOTSUPP;
14595
14596         if (!info->attrs[NL80211_ATTR_MAC] ||
14597             !info->attrs[NL80211_ATTR_FRAME]) {
14598                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
14599                 return -EINVAL;
14600         }
14601
14602         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
14603                 return -EOPNOTSUPP;
14604
14605         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
14606         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
14607         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
14608
14609         if (len < sizeof(struct ethhdr))
14610                 return -EINVAL;
14611
14612         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
14613             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
14614                 return -EINVAL;
14615
14616         err = rdev_get_station(rdev, dev, dest, &sinfo);
14617         if (err)
14618                 return err;
14619
14620         cfg80211_sinfo_release_content(&sinfo);
14621
14622         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
14623 }
14624
14625 static int parse_tid_conf(struct cfg80211_registered_device *rdev,
14626                           struct nlattr *attrs[], struct net_device *dev,
14627                           struct cfg80211_tid_cfg *tid_conf,
14628                           struct genl_info *info, const u8 *peer)
14629 {
14630         struct netlink_ext_ack *extack = info->extack;
14631         u64 mask;
14632         int err;
14633
14634         if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS])
14635                 return -EINVAL;
14636
14637         tid_conf->config_override =
14638                         nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]);
14639         tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]);
14640
14641         if (tid_conf->config_override) {
14642                 if (rdev->ops->reset_tid_config) {
14643                         err = rdev_reset_tid_config(rdev, dev, peer,
14644                                                     tid_conf->tids);
14645                         if (err)
14646                                 return err;
14647                 } else {
14648                         return -EINVAL;
14649                 }
14650         }
14651
14652         if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) {
14653                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK);
14654                 tid_conf->noack =
14655                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]);
14656         }
14657
14658         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) {
14659                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT);
14660                 tid_conf->retry_short =
14661                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]);
14662
14663                 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count)
14664                         return -EINVAL;
14665         }
14666
14667         if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) {
14668                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG);
14669                 tid_conf->retry_long =
14670                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]);
14671
14672                 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count)
14673                         return -EINVAL;
14674         }
14675
14676         if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) {
14677                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL);
14678                 tid_conf->ampdu =
14679                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
14680         }
14681
14682         if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
14683                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
14684                 tid_conf->rtscts =
14685                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
14686         }
14687
14688         if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) {
14689                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL);
14690                 tid_conf->amsdu =
14691                         nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]);
14692         }
14693
14694         if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) {
14695                 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr;
14696
14697                 tid_conf->txrate_type = nla_get_u8(attrs[idx]);
14698
14699                 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
14700                         attr = NL80211_TID_CONFIG_ATTR_TX_RATE;
14701                         err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
14702                                                     &tid_conf->txrate_mask, dev,
14703                                                     true);
14704                         if (err)
14705                                 return err;
14706
14707                         tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE);
14708                 }
14709                 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE);
14710         }
14711
14712         if (peer)
14713                 mask = rdev->wiphy.tid_config_support.peer;
14714         else
14715                 mask = rdev->wiphy.tid_config_support.vif;
14716
14717         if (tid_conf->mask & ~mask) {
14718                 NL_SET_ERR_MSG(extack, "unsupported TID configuration");
14719                 return -ENOTSUPP;
14720         }
14721
14722         return 0;
14723 }
14724
14725 static int nl80211_set_tid_config(struct sk_buff *skb,
14726                                   struct genl_info *info)
14727 {
14728         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14729         struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1];
14730         struct net_device *dev = info->user_ptr[1];
14731         struct cfg80211_tid_config *tid_config;
14732         struct nlattr *tid;
14733         int conf_idx = 0, rem_conf;
14734         int ret = -EINVAL;
14735         u32 num_conf = 0;
14736
14737         if (!info->attrs[NL80211_ATTR_TID_CONFIG])
14738                 return -EINVAL;
14739
14740         if (!rdev->ops->set_tid_config)
14741                 return -EOPNOTSUPP;
14742
14743         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14744                             rem_conf)
14745                 num_conf++;
14746
14747         tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf),
14748                              GFP_KERNEL);
14749         if (!tid_config)
14750                 return -ENOMEM;
14751
14752         tid_config->n_tid_conf = num_conf;
14753
14754         if (info->attrs[NL80211_ATTR_MAC])
14755                 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
14756
14757         nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG],
14758                             rem_conf) {
14759                 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX,
14760                                        tid, NULL, NULL);
14761
14762                 if (ret)
14763                         goto bad_tid_conf;
14764
14765                 ret = parse_tid_conf(rdev, attrs, dev,
14766                                      &tid_config->tid_conf[conf_idx],
14767                                      info, tid_config->peer);
14768                 if (ret)
14769                         goto bad_tid_conf;
14770
14771                 conf_idx++;
14772         }
14773
14774         ret = rdev_set_tid_config(rdev, dev, tid_config);
14775
14776 bad_tid_conf:
14777         kfree(tid_config);
14778         return ret;
14779 }
14780
14781 #define NL80211_FLAG_NEED_WIPHY         0x01
14782 #define NL80211_FLAG_NEED_NETDEV        0x02
14783 #define NL80211_FLAG_NEED_RTNL          0x04
14784 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
14785 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
14786                                          NL80211_FLAG_CHECK_NETDEV_UP)
14787 #define NL80211_FLAG_NEED_WDEV          0x10
14788 /* If a netdev is associated, it must be UP, P2P must be started */
14789 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
14790                                          NL80211_FLAG_CHECK_NETDEV_UP)
14791 #define NL80211_FLAG_CLEAR_SKB          0x20
14792
14793 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
14794                             struct genl_info *info)
14795 {
14796         struct cfg80211_registered_device *rdev = NULL;
14797         struct wireless_dev *wdev;
14798         struct net_device *dev;
14799
14800         rtnl_lock();
14801         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
14802                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
14803                 if (IS_ERR(rdev)) {
14804                         rtnl_unlock();
14805                         return PTR_ERR(rdev);
14806                 }
14807                 info->user_ptr[0] = rdev;
14808         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
14809                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14810                 wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
14811                                                   info->attrs);
14812                 if (IS_ERR(wdev)) {
14813                         rtnl_unlock();
14814                         return PTR_ERR(wdev);
14815                 }
14816
14817                 dev = wdev->netdev;
14818                 rdev = wiphy_to_rdev(wdev->wiphy);
14819
14820                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
14821                         if (!dev) {
14822                                 rtnl_unlock();
14823                                 return -EINVAL;
14824                         }
14825
14826                         info->user_ptr[1] = dev;
14827                 } else {
14828                         info->user_ptr[1] = wdev;
14829                 }
14830
14831                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
14832                     !wdev_running(wdev)) {
14833                         rtnl_unlock();
14834                         return -ENETDOWN;
14835                 }
14836
14837                 if (dev)
14838                         dev_hold(dev);
14839
14840                 info->user_ptr[0] = rdev;
14841         }
14842
14843         if (rdev) {
14844                 wiphy_lock(&rdev->wiphy);
14845                 /* we keep the mutex locked until post_doit */
14846                 __release(&rdev->wiphy.mtx);
14847         }
14848         if (!(ops->internal_flags & NL80211_FLAG_NEED_RTNL))
14849                 rtnl_unlock();
14850
14851         return 0;
14852 }
14853
14854 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
14855                               struct genl_info *info)
14856 {
14857         if (info->user_ptr[1]) {
14858                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
14859                         struct wireless_dev *wdev = info->user_ptr[1];
14860
14861                         if (wdev->netdev)
14862                                 dev_put(wdev->netdev);
14863                 } else {
14864                         dev_put(info->user_ptr[1]);
14865                 }
14866         }
14867
14868         if (info->user_ptr[0]) {
14869                 struct cfg80211_registered_device *rdev = info->user_ptr[0];
14870
14871                 /* we kept the mutex locked since pre_doit */
14872                 __acquire(&rdev->wiphy.mtx);
14873                 wiphy_unlock(&rdev->wiphy);
14874         }
14875
14876         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
14877                 rtnl_unlock();
14878
14879         /* If needed, clear the netlink message payload from the SKB
14880          * as it might contain key data that shouldn't stick around on
14881          * the heap after the SKB is freed. The netlink message header
14882          * is still needed for further processing, so leave it intact.
14883          */
14884         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
14885                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
14886
14887                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
14888         }
14889 }
14890
14891 static int nl80211_set_sar_sub_specs(struct cfg80211_registered_device *rdev,
14892                                      struct cfg80211_sar_specs *sar_specs,
14893                                      struct nlattr *spec[], int index)
14894 {
14895         u32 range_index, i;
14896
14897         if (!sar_specs || !spec)
14898                 return -EINVAL;
14899
14900         if (!spec[NL80211_SAR_ATTR_SPECS_POWER] ||
14901             !spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX])
14902                 return -EINVAL;
14903
14904         range_index = nla_get_u32(spec[NL80211_SAR_ATTR_SPECS_RANGE_INDEX]);
14905
14906         /* check if range_index exceeds num_freq_ranges */
14907         if (range_index >= rdev->wiphy.sar_capa->num_freq_ranges)
14908                 return -EINVAL;
14909
14910         /* check if range_index duplicates */
14911         for (i = 0; i < index; i++) {
14912                 if (sar_specs->sub_specs[i].freq_range_index == range_index)
14913                         return -EINVAL;
14914         }
14915
14916         sar_specs->sub_specs[index].power =
14917                 nla_get_s32(spec[NL80211_SAR_ATTR_SPECS_POWER]);
14918
14919         sar_specs->sub_specs[index].freq_range_index = range_index;
14920
14921         return 0;
14922 }
14923
14924 static int nl80211_set_sar_specs(struct sk_buff *skb, struct genl_info *info)
14925 {
14926         struct cfg80211_registered_device *rdev = info->user_ptr[0];
14927         struct nlattr *spec[NL80211_SAR_ATTR_SPECS_MAX + 1];
14928         struct nlattr *tb[NL80211_SAR_ATTR_MAX + 1];
14929         struct cfg80211_sar_specs *sar_spec;
14930         enum nl80211_sar_type type;
14931         struct nlattr *spec_list;
14932         u32 specs;
14933         int rem, err;
14934
14935         if (!rdev->wiphy.sar_capa || !rdev->ops->set_sar_specs)
14936                 return -EOPNOTSUPP;
14937
14938         if (!info->attrs[NL80211_ATTR_SAR_SPEC])
14939                 return -EINVAL;
14940
14941         nla_parse_nested(tb, NL80211_SAR_ATTR_MAX,
14942                          info->attrs[NL80211_ATTR_SAR_SPEC],
14943                          NULL, NULL);
14944
14945         if (!tb[NL80211_SAR_ATTR_TYPE] || !tb[NL80211_SAR_ATTR_SPECS])
14946                 return -EINVAL;
14947
14948         type = nla_get_u32(tb[NL80211_SAR_ATTR_TYPE]);
14949         if (type != rdev->wiphy.sar_capa->type)
14950                 return -EINVAL;
14951
14952         specs = 0;
14953         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem)
14954                 specs++;
14955
14956         if (specs > rdev->wiphy.sar_capa->num_freq_ranges)
14957                 return -EINVAL;
14958
14959         sar_spec = kzalloc(sizeof(*sar_spec) +
14960                            specs * sizeof(struct cfg80211_sar_sub_specs),
14961                            GFP_KERNEL);
14962         if (!sar_spec)
14963                 return -ENOMEM;
14964
14965         sar_spec->type = type;
14966         specs = 0;
14967         nla_for_each_nested(spec_list, tb[NL80211_SAR_ATTR_SPECS], rem) {
14968                 nla_parse_nested(spec, NL80211_SAR_ATTR_SPECS_MAX,
14969                                  spec_list, NULL, NULL);
14970
14971                 switch (type) {
14972                 case NL80211_SAR_TYPE_POWER:
14973                         if (nl80211_set_sar_sub_specs(rdev, sar_spec,
14974                                                       spec, specs)) {
14975                                 err = -EINVAL;
14976                                 goto error;
14977                         }
14978                         break;
14979                 default:
14980                         err = -EINVAL;
14981                         goto error;
14982                 }
14983                 specs++;
14984         }
14985
14986         sar_spec->num_sub_specs = specs;
14987
14988         rdev->cur_cmd_info = info;
14989         err = rdev_set_sar_specs(rdev, sar_spec);
14990         rdev->cur_cmd_info = NULL;
14991 error:
14992         kfree(sar_spec);
14993         return err;
14994 }
14995
14996 static const struct genl_ops nl80211_ops[] = {
14997         {
14998                 .cmd = NL80211_CMD_GET_WIPHY,
14999                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15000                 .doit = nl80211_get_wiphy,
15001                 .dumpit = nl80211_dump_wiphy,
15002                 .done = nl80211_dump_wiphy_done,
15003                 /* can be retrieved by unprivileged users */
15004                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15005         },
15006 };
15007
15008 static const struct genl_small_ops nl80211_small_ops[] = {
15009         {
15010                 .cmd = NL80211_CMD_SET_WIPHY,
15011                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15012                 .doit = nl80211_set_wiphy,
15013                 .flags = GENL_UNS_ADMIN_PERM,
15014         },
15015         {
15016                 .cmd = NL80211_CMD_GET_INTERFACE,
15017                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15018                 .doit = nl80211_get_interface,
15019                 .dumpit = nl80211_dump_interface,
15020                 /* can be retrieved by unprivileged users */
15021                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15022         },
15023         {
15024                 .cmd = NL80211_CMD_SET_INTERFACE,
15025                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15026                 .doit = nl80211_set_interface,
15027                 .flags = GENL_UNS_ADMIN_PERM,
15028                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
15029                                   NL80211_FLAG_NEED_RTNL,
15030         },
15031         {
15032                 .cmd = NL80211_CMD_NEW_INTERFACE,
15033                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15034                 .doit = nl80211_new_interface,
15035                 .flags = GENL_UNS_ADMIN_PERM,
15036                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15037                                   NL80211_FLAG_NEED_RTNL,
15038         },
15039         {
15040                 .cmd = NL80211_CMD_DEL_INTERFACE,
15041                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15042                 .doit = nl80211_del_interface,
15043                 .flags = GENL_UNS_ADMIN_PERM,
15044                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15045                                   NL80211_FLAG_NEED_RTNL,
15046         },
15047         {
15048                 .cmd = NL80211_CMD_GET_KEY,
15049                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15050                 .doit = nl80211_get_key,
15051                 .flags = GENL_UNS_ADMIN_PERM,
15052                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15053         },
15054         {
15055                 .cmd = NL80211_CMD_SET_KEY,
15056                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15057                 .doit = nl80211_set_key,
15058                 .flags = GENL_UNS_ADMIN_PERM,
15059                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15060                                   NL80211_FLAG_CLEAR_SKB,
15061         },
15062         {
15063                 .cmd = NL80211_CMD_NEW_KEY,
15064                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15065                 .doit = nl80211_new_key,
15066                 .flags = GENL_UNS_ADMIN_PERM,
15067                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15068                                   NL80211_FLAG_CLEAR_SKB,
15069         },
15070         {
15071                 .cmd = NL80211_CMD_DEL_KEY,
15072                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15073                 .doit = nl80211_del_key,
15074                 .flags = GENL_UNS_ADMIN_PERM,
15075                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15076         },
15077         {
15078                 .cmd = NL80211_CMD_SET_BEACON,
15079                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15080                 .flags = GENL_UNS_ADMIN_PERM,
15081                 .doit = nl80211_set_beacon,
15082                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15083         },
15084         {
15085                 .cmd = NL80211_CMD_START_AP,
15086                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15087                 .flags = GENL_UNS_ADMIN_PERM,
15088                 .doit = nl80211_start_ap,
15089                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15090         },
15091         {
15092                 .cmd = NL80211_CMD_STOP_AP,
15093                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15094                 .flags = GENL_UNS_ADMIN_PERM,
15095                 .doit = nl80211_stop_ap,
15096                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15097         },
15098         {
15099                 .cmd = NL80211_CMD_GET_STATION,
15100                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15101                 .doit = nl80211_get_station,
15102                 .dumpit = nl80211_dump_station,
15103                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15104         },
15105         {
15106                 .cmd = NL80211_CMD_SET_STATION,
15107                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15108                 .doit = nl80211_set_station,
15109                 .flags = GENL_UNS_ADMIN_PERM,
15110                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15111         },
15112         {
15113                 .cmd = NL80211_CMD_NEW_STATION,
15114                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15115                 .doit = nl80211_new_station,
15116                 .flags = GENL_UNS_ADMIN_PERM,
15117                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15118         },
15119         {
15120                 .cmd = NL80211_CMD_DEL_STATION,
15121                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15122                 .doit = nl80211_del_station,
15123                 .flags = GENL_UNS_ADMIN_PERM,
15124                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15125         },
15126         {
15127                 .cmd = NL80211_CMD_GET_MPATH,
15128                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15129                 .doit = nl80211_get_mpath,
15130                 .dumpit = nl80211_dump_mpath,
15131                 .flags = GENL_UNS_ADMIN_PERM,
15132                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15133         },
15134         {
15135                 .cmd = NL80211_CMD_GET_MPP,
15136                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15137                 .doit = nl80211_get_mpp,
15138                 .dumpit = nl80211_dump_mpp,
15139                 .flags = GENL_UNS_ADMIN_PERM,
15140                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15141         },
15142         {
15143                 .cmd = NL80211_CMD_SET_MPATH,
15144                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15145                 .doit = nl80211_set_mpath,
15146                 .flags = GENL_UNS_ADMIN_PERM,
15147                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15148         },
15149         {
15150                 .cmd = NL80211_CMD_NEW_MPATH,
15151                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15152                 .doit = nl80211_new_mpath,
15153                 .flags = GENL_UNS_ADMIN_PERM,
15154                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15155         },
15156         {
15157                 .cmd = NL80211_CMD_DEL_MPATH,
15158                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15159                 .doit = nl80211_del_mpath,
15160                 .flags = GENL_UNS_ADMIN_PERM,
15161                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15162         },
15163         {
15164                 .cmd = NL80211_CMD_SET_BSS,
15165                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15166                 .doit = nl80211_set_bss,
15167                 .flags = GENL_UNS_ADMIN_PERM,
15168                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15169         },
15170         {
15171                 .cmd = NL80211_CMD_GET_REG,
15172                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15173                 .doit = nl80211_get_reg_do,
15174                 .dumpit = nl80211_get_reg_dump,
15175                 .internal_flags = 0,
15176                 /* can be retrieved by unprivileged users */
15177         },
15178 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
15179         {
15180                 .cmd = NL80211_CMD_SET_REG,
15181                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15182                 .doit = nl80211_set_reg,
15183                 .flags = GENL_ADMIN_PERM,
15184                 .internal_flags = 0,
15185         },
15186 #endif
15187         {
15188                 .cmd = NL80211_CMD_REQ_SET_REG,
15189                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15190                 .doit = nl80211_req_set_reg,
15191                 .flags = GENL_ADMIN_PERM,
15192         },
15193         {
15194                 .cmd = NL80211_CMD_RELOAD_REGDB,
15195                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15196                 .doit = nl80211_reload_regdb,
15197                 .flags = GENL_ADMIN_PERM,
15198         },
15199         {
15200                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
15201                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15202                 .doit = nl80211_get_mesh_config,
15203                 /* can be retrieved by unprivileged users */
15204                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15205         },
15206         {
15207                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
15208                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15209                 .doit = nl80211_update_mesh_config,
15210                 .flags = GENL_UNS_ADMIN_PERM,
15211                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15212         },
15213         {
15214                 .cmd = NL80211_CMD_TRIGGER_SCAN,
15215                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15216                 .doit = nl80211_trigger_scan,
15217                 .flags = GENL_UNS_ADMIN_PERM,
15218                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15219         },
15220         {
15221                 .cmd = NL80211_CMD_ABORT_SCAN,
15222                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15223                 .doit = nl80211_abort_scan,
15224                 .flags = GENL_UNS_ADMIN_PERM,
15225                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15226         },
15227         {
15228                 .cmd = NL80211_CMD_GET_SCAN,
15229                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15230                 .dumpit = nl80211_dump_scan,
15231         },
15232         {
15233                 .cmd = NL80211_CMD_START_SCHED_SCAN,
15234                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15235                 .doit = nl80211_start_sched_scan,
15236                 .flags = GENL_UNS_ADMIN_PERM,
15237                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15238         },
15239         {
15240                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
15241                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15242                 .doit = nl80211_stop_sched_scan,
15243                 .flags = GENL_UNS_ADMIN_PERM,
15244                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15245         },
15246         {
15247                 .cmd = NL80211_CMD_AUTHENTICATE,
15248                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15249                 .doit = nl80211_authenticate,
15250                 .flags = GENL_UNS_ADMIN_PERM,
15251                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15252                                   0 |
15253                                   NL80211_FLAG_CLEAR_SKB,
15254         },
15255         {
15256                 .cmd = NL80211_CMD_ASSOCIATE,
15257                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15258                 .doit = nl80211_associate,
15259                 .flags = GENL_UNS_ADMIN_PERM,
15260                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15261                                   0 |
15262                                   NL80211_FLAG_CLEAR_SKB,
15263         },
15264         {
15265                 .cmd = NL80211_CMD_DEAUTHENTICATE,
15266                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15267                 .doit = nl80211_deauthenticate,
15268                 .flags = GENL_UNS_ADMIN_PERM,
15269                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15270         },
15271         {
15272                 .cmd = NL80211_CMD_DISASSOCIATE,
15273                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15274                 .doit = nl80211_disassociate,
15275                 .flags = GENL_UNS_ADMIN_PERM,
15276                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15277         },
15278         {
15279                 .cmd = NL80211_CMD_JOIN_IBSS,
15280                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15281                 .doit = nl80211_join_ibss,
15282                 .flags = GENL_UNS_ADMIN_PERM,
15283                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15284         },
15285         {
15286                 .cmd = NL80211_CMD_LEAVE_IBSS,
15287                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15288                 .doit = nl80211_leave_ibss,
15289                 .flags = GENL_UNS_ADMIN_PERM,
15290                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15291         },
15292 #ifdef CONFIG_NL80211_TESTMODE
15293         {
15294                 .cmd = NL80211_CMD_TESTMODE,
15295                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15296                 .doit = nl80211_testmode_do,
15297                 .dumpit = nl80211_testmode_dump,
15298                 .flags = GENL_UNS_ADMIN_PERM,
15299                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15300         },
15301 #endif
15302         {
15303                 .cmd = NL80211_CMD_CONNECT,
15304                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15305                 .doit = nl80211_connect,
15306                 .flags = GENL_UNS_ADMIN_PERM,
15307                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15308                                   0 |
15309                                   NL80211_FLAG_CLEAR_SKB,
15310         },
15311         {
15312                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
15313                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15314                 .doit = nl80211_update_connect_params,
15315                 .flags = GENL_ADMIN_PERM,
15316                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15317                                   0 |
15318                                   NL80211_FLAG_CLEAR_SKB,
15319         },
15320         {
15321                 .cmd = NL80211_CMD_DISCONNECT,
15322                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15323                 .doit = nl80211_disconnect,
15324                 .flags = GENL_UNS_ADMIN_PERM,
15325                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15326         },
15327         {
15328                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
15329                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15330                 .doit = nl80211_wiphy_netns,
15331                 .flags = GENL_UNS_ADMIN_PERM,
15332                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15333         },
15334         {
15335                 .cmd = NL80211_CMD_GET_SURVEY,
15336                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15337                 .dumpit = nl80211_dump_survey,
15338         },
15339         {
15340                 .cmd = NL80211_CMD_SET_PMKSA,
15341                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15342                 .doit = nl80211_setdel_pmksa,
15343                 .flags = GENL_UNS_ADMIN_PERM,
15344                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15345                                   0 |
15346                                   NL80211_FLAG_CLEAR_SKB,
15347         },
15348         {
15349                 .cmd = NL80211_CMD_DEL_PMKSA,
15350                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15351                 .doit = nl80211_setdel_pmksa,
15352                 .flags = GENL_UNS_ADMIN_PERM,
15353                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15354         },
15355         {
15356                 .cmd = NL80211_CMD_FLUSH_PMKSA,
15357                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15358                 .doit = nl80211_flush_pmksa,
15359                 .flags = GENL_UNS_ADMIN_PERM,
15360                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15361         },
15362         {
15363                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
15364                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15365                 .doit = nl80211_remain_on_channel,
15366                 .flags = GENL_UNS_ADMIN_PERM,
15367                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15368         },
15369         {
15370                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15371                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15372                 .doit = nl80211_cancel_remain_on_channel,
15373                 .flags = GENL_UNS_ADMIN_PERM,
15374                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15375         },
15376         {
15377                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
15378                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15379                 .doit = nl80211_set_tx_bitrate_mask,
15380                 .flags = GENL_UNS_ADMIN_PERM,
15381                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15382         },
15383         {
15384                 .cmd = NL80211_CMD_REGISTER_FRAME,
15385                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15386                 .doit = nl80211_register_mgmt,
15387                 .flags = GENL_UNS_ADMIN_PERM,
15388                 .internal_flags = NL80211_FLAG_NEED_WDEV,
15389         },
15390         {
15391                 .cmd = NL80211_CMD_FRAME,
15392                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15393                 .doit = nl80211_tx_mgmt,
15394                 .flags = GENL_UNS_ADMIN_PERM,
15395                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15396         },
15397         {
15398                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
15399                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15400                 .doit = nl80211_tx_mgmt_cancel_wait,
15401                 .flags = GENL_UNS_ADMIN_PERM,
15402                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15403         },
15404         {
15405                 .cmd = NL80211_CMD_SET_POWER_SAVE,
15406                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15407                 .doit = nl80211_set_power_save,
15408                 .flags = GENL_UNS_ADMIN_PERM,
15409                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15410         },
15411         {
15412                 .cmd = NL80211_CMD_GET_POWER_SAVE,
15413                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15414                 .doit = nl80211_get_power_save,
15415                 /* can be retrieved by unprivileged users */
15416                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15417         },
15418         {
15419                 .cmd = NL80211_CMD_SET_CQM,
15420                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15421                 .doit = nl80211_set_cqm,
15422                 .flags = GENL_UNS_ADMIN_PERM,
15423                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15424         },
15425         {
15426                 .cmd = NL80211_CMD_SET_CHANNEL,
15427                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15428                 .doit = nl80211_set_channel,
15429                 .flags = GENL_UNS_ADMIN_PERM,
15430                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15431         },
15432         {
15433                 .cmd = NL80211_CMD_JOIN_MESH,
15434                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15435                 .doit = nl80211_join_mesh,
15436                 .flags = GENL_UNS_ADMIN_PERM,
15437                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15438         },
15439         {
15440                 .cmd = NL80211_CMD_LEAVE_MESH,
15441                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15442                 .doit = nl80211_leave_mesh,
15443                 .flags = GENL_UNS_ADMIN_PERM,
15444                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15445         },
15446         {
15447                 .cmd = NL80211_CMD_JOIN_OCB,
15448                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15449                 .doit = nl80211_join_ocb,
15450                 .flags = GENL_UNS_ADMIN_PERM,
15451                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15452         },
15453         {
15454                 .cmd = NL80211_CMD_LEAVE_OCB,
15455                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15456                 .doit = nl80211_leave_ocb,
15457                 .flags = GENL_UNS_ADMIN_PERM,
15458                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15459         },
15460 #ifdef CONFIG_PM
15461         {
15462                 .cmd = NL80211_CMD_GET_WOWLAN,
15463                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15464                 .doit = nl80211_get_wowlan,
15465                 /* can be retrieved by unprivileged users */
15466                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15467         },
15468         {
15469                 .cmd = NL80211_CMD_SET_WOWLAN,
15470                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15471                 .doit = nl80211_set_wowlan,
15472                 .flags = GENL_UNS_ADMIN_PERM,
15473                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15474         },
15475 #endif
15476         {
15477                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
15478                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15479                 .doit = nl80211_set_rekey_data,
15480                 .flags = GENL_UNS_ADMIN_PERM,
15481                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15482                                   0 |
15483                                   NL80211_FLAG_CLEAR_SKB,
15484         },
15485         {
15486                 .cmd = NL80211_CMD_TDLS_MGMT,
15487                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15488                 .doit = nl80211_tdls_mgmt,
15489                 .flags = GENL_UNS_ADMIN_PERM,
15490                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15491         },
15492         {
15493                 .cmd = NL80211_CMD_TDLS_OPER,
15494                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15495                 .doit = nl80211_tdls_oper,
15496                 .flags = GENL_UNS_ADMIN_PERM,
15497                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15498         },
15499         {
15500                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
15501                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15502                 .doit = nl80211_register_unexpected_frame,
15503                 .flags = GENL_UNS_ADMIN_PERM,
15504                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15505         },
15506         {
15507                 .cmd = NL80211_CMD_PROBE_CLIENT,
15508                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15509                 .doit = nl80211_probe_client,
15510                 .flags = GENL_UNS_ADMIN_PERM,
15511                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15512         },
15513         {
15514                 .cmd = NL80211_CMD_REGISTER_BEACONS,
15515                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15516                 .doit = nl80211_register_beacons,
15517                 .flags = GENL_UNS_ADMIN_PERM,
15518                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15519         },
15520         {
15521                 .cmd = NL80211_CMD_SET_NOACK_MAP,
15522                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15523                 .doit = nl80211_set_noack_map,
15524                 .flags = GENL_UNS_ADMIN_PERM,
15525                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15526         },
15527         {
15528                 .cmd = NL80211_CMD_START_P2P_DEVICE,
15529                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15530                 .doit = nl80211_start_p2p_device,
15531                 .flags = GENL_UNS_ADMIN_PERM,
15532                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15533                                   NL80211_FLAG_NEED_RTNL,
15534         },
15535         {
15536                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
15537                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15538                 .doit = nl80211_stop_p2p_device,
15539                 .flags = GENL_UNS_ADMIN_PERM,
15540                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15541                                   NL80211_FLAG_NEED_RTNL,
15542         },
15543         {
15544                 .cmd = NL80211_CMD_START_NAN,
15545                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15546                 .doit = nl80211_start_nan,
15547                 .flags = GENL_ADMIN_PERM,
15548                 .internal_flags = NL80211_FLAG_NEED_WDEV |
15549                                   NL80211_FLAG_NEED_RTNL,
15550         },
15551         {
15552                 .cmd = NL80211_CMD_STOP_NAN,
15553                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15554                 .doit = nl80211_stop_nan,
15555                 .flags = GENL_ADMIN_PERM,
15556                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
15557                                   NL80211_FLAG_NEED_RTNL,
15558         },
15559         {
15560                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
15561                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15562                 .doit = nl80211_nan_add_func,
15563                 .flags = GENL_ADMIN_PERM,
15564                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15565         },
15566         {
15567                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
15568                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15569                 .doit = nl80211_nan_del_func,
15570                 .flags = GENL_ADMIN_PERM,
15571                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15572         },
15573         {
15574                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
15575                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15576                 .doit = nl80211_nan_change_config,
15577                 .flags = GENL_ADMIN_PERM,
15578                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15579         },
15580         {
15581                 .cmd = NL80211_CMD_SET_MCAST_RATE,
15582                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15583                 .doit = nl80211_set_mcast_rate,
15584                 .flags = GENL_UNS_ADMIN_PERM,
15585                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15586         },
15587         {
15588                 .cmd = NL80211_CMD_SET_MAC_ACL,
15589                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15590                 .doit = nl80211_set_mac_acl,
15591                 .flags = GENL_UNS_ADMIN_PERM,
15592                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15593         },
15594         {
15595                 .cmd = NL80211_CMD_RADAR_DETECT,
15596                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15597                 .doit = nl80211_start_radar_detection,
15598                 .flags = GENL_UNS_ADMIN_PERM,
15599                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15600         },
15601         {
15602                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
15603                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15604                 .doit = nl80211_get_protocol_features,
15605         },
15606         {
15607                 .cmd = NL80211_CMD_UPDATE_FT_IES,
15608                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15609                 .doit = nl80211_update_ft_ies,
15610                 .flags = GENL_UNS_ADMIN_PERM,
15611                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15612         },
15613         {
15614                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
15615                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15616                 .doit = nl80211_crit_protocol_start,
15617                 .flags = GENL_UNS_ADMIN_PERM,
15618                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15619         },
15620         {
15621                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
15622                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15623                 .doit = nl80211_crit_protocol_stop,
15624                 .flags = GENL_UNS_ADMIN_PERM,
15625                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15626         },
15627         {
15628                 .cmd = NL80211_CMD_GET_COALESCE,
15629                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15630                 .doit = nl80211_get_coalesce,
15631                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15632         },
15633         {
15634                 .cmd = NL80211_CMD_SET_COALESCE,
15635                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15636                 .doit = nl80211_set_coalesce,
15637                 .flags = GENL_UNS_ADMIN_PERM,
15638                 .internal_flags = NL80211_FLAG_NEED_WIPHY,
15639         },
15640         {
15641                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
15642                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15643                 .doit = nl80211_channel_switch,
15644                 .flags = GENL_UNS_ADMIN_PERM,
15645                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15646         },
15647         {
15648                 .cmd = NL80211_CMD_VENDOR,
15649                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15650                 .doit = nl80211_vendor_cmd,
15651                 .dumpit = nl80211_vendor_cmd_dump,
15652                 .flags = GENL_UNS_ADMIN_PERM,
15653                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15654                                   0 |
15655                                   NL80211_FLAG_CLEAR_SKB,
15656         },
15657         {
15658                 .cmd = NL80211_CMD_SET_QOS_MAP,
15659                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15660                 .doit = nl80211_set_qos_map,
15661                 .flags = GENL_UNS_ADMIN_PERM,
15662                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15663         },
15664         {
15665                 .cmd = NL80211_CMD_ADD_TX_TS,
15666                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15667                 .doit = nl80211_add_tx_ts,
15668                 .flags = GENL_UNS_ADMIN_PERM,
15669                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15670         },
15671         {
15672                 .cmd = NL80211_CMD_DEL_TX_TS,
15673                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15674                 .doit = nl80211_del_tx_ts,
15675                 .flags = GENL_UNS_ADMIN_PERM,
15676                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15677         },
15678         {
15679                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
15680                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15681                 .doit = nl80211_tdls_channel_switch,
15682                 .flags = GENL_UNS_ADMIN_PERM,
15683                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15684         },
15685         {
15686                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
15687                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15688                 .doit = nl80211_tdls_cancel_channel_switch,
15689                 .flags = GENL_UNS_ADMIN_PERM,
15690                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15691         },
15692         {
15693                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
15694                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15695                 .doit = nl80211_set_multicast_to_unicast,
15696                 .flags = GENL_UNS_ADMIN_PERM,
15697                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15698         },
15699         {
15700                 .cmd = NL80211_CMD_SET_PMK,
15701                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15702                 .doit = nl80211_set_pmk,
15703                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
15704                                   0 |
15705                                   NL80211_FLAG_CLEAR_SKB,
15706         },
15707         {
15708                 .cmd = NL80211_CMD_DEL_PMK,
15709                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15710                 .doit = nl80211_del_pmk,
15711                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15712         },
15713         {
15714                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
15715                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15716                 .doit = nl80211_external_auth,
15717                 .flags = GENL_ADMIN_PERM,
15718                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15719         },
15720         {
15721                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
15722                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15723                 .doit = nl80211_tx_control_port,
15724                 .flags = GENL_UNS_ADMIN_PERM,
15725                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15726         },
15727         {
15728                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
15729                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15730                 .doit = nl80211_get_ftm_responder_stats,
15731                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15732         },
15733         {
15734                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
15735                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15736                 .doit = nl80211_pmsr_start,
15737                 .flags = GENL_UNS_ADMIN_PERM,
15738                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
15739         },
15740         {
15741                 .cmd = NL80211_CMD_NOTIFY_RADAR,
15742                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15743                 .doit = nl80211_notify_radar_detection,
15744                 .flags = GENL_UNS_ADMIN_PERM,
15745                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15746         },
15747         {
15748                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
15749                 .doit = nl80211_update_owe_info,
15750                 .flags = GENL_ADMIN_PERM,
15751                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15752         },
15753         {
15754                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
15755                 .doit = nl80211_probe_mesh_link,
15756                 .flags = GENL_UNS_ADMIN_PERM,
15757                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
15758         },
15759         {
15760                 .cmd = NL80211_CMD_SET_TID_CONFIG,
15761                 .doit = nl80211_set_tid_config,
15762                 .flags = GENL_UNS_ADMIN_PERM,
15763                 .internal_flags = NL80211_FLAG_NEED_NETDEV,
15764         },
15765         {
15766                 .cmd = NL80211_CMD_SET_SAR_SPECS,
15767                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
15768                 .doit = nl80211_set_sar_specs,
15769                 .flags = GENL_UNS_ADMIN_PERM,
15770                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
15771                                   NL80211_FLAG_NEED_RTNL,
15772         },
15773 };
15774
15775 static struct genl_family nl80211_fam __ro_after_init = {
15776         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
15777         .hdrsize = 0,                   /* no private header */
15778         .version = 1,                   /* no particular meaning now */
15779         .maxattr = NL80211_ATTR_MAX,
15780         .policy = nl80211_policy,
15781         .netnsok = true,
15782         .pre_doit = nl80211_pre_doit,
15783         .post_doit = nl80211_post_doit,
15784         .module = THIS_MODULE,
15785         .ops = nl80211_ops,
15786         .n_ops = ARRAY_SIZE(nl80211_ops),
15787         .small_ops = nl80211_small_ops,
15788         .n_small_ops = ARRAY_SIZE(nl80211_small_ops),
15789         .mcgrps = nl80211_mcgrps,
15790         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
15791         .parallel_ops = true,
15792 };
15793
15794 /* notification functions */
15795
15796 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
15797                           enum nl80211_commands cmd)
15798 {
15799         struct sk_buff *msg;
15800         struct nl80211_dump_wiphy_state state = {};
15801
15802         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
15803                 cmd != NL80211_CMD_DEL_WIPHY);
15804
15805         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15806         if (!msg)
15807                 return;
15808
15809         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
15810                 nlmsg_free(msg);
15811                 return;
15812         }
15813
15814         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15815                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15816 }
15817
15818 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
15819                                 struct wireless_dev *wdev,
15820                                 enum nl80211_commands cmd)
15821 {
15822         struct sk_buff *msg;
15823
15824         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15825         if (!msg)
15826                 return;
15827
15828         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
15829                 nlmsg_free(msg);
15830                 return;
15831         }
15832
15833         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15834                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
15835 }
15836
15837 static int nl80211_add_scan_req(struct sk_buff *msg,
15838                                 struct cfg80211_registered_device *rdev)
15839 {
15840         struct cfg80211_scan_request *req = rdev->scan_req;
15841         struct nlattr *nest;
15842         int i;
15843         struct cfg80211_scan_info *info;
15844
15845         if (WARN_ON(!req))
15846                 return 0;
15847
15848         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
15849         if (!nest)
15850                 goto nla_put_failure;
15851         for (i = 0; i < req->n_ssids; i++) {
15852                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
15853                         goto nla_put_failure;
15854         }
15855         nla_nest_end(msg, nest);
15856
15857         if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) {
15858                 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ);
15859                 if (!nest)
15860                         goto nla_put_failure;
15861                 for (i = 0; i < req->n_channels; i++) {
15862                         if (nla_put_u32(msg, i,
15863                                    ieee80211_channel_to_khz(req->channels[i])))
15864                                 goto nla_put_failure;
15865                 }
15866                 nla_nest_end(msg, nest);
15867         } else {
15868                 nest = nla_nest_start_noflag(msg,
15869                                              NL80211_ATTR_SCAN_FREQUENCIES);
15870                 if (!nest)
15871                         goto nla_put_failure;
15872                 for (i = 0; i < req->n_channels; i++) {
15873                         if (nla_put_u32(msg, i, req->channels[i]->center_freq))
15874                                 goto nla_put_failure;
15875                 }
15876                 nla_nest_end(msg, nest);
15877         }
15878
15879         if (req->ie &&
15880             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
15881                 goto nla_put_failure;
15882
15883         if (req->flags &&
15884             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
15885                 goto nla_put_failure;
15886
15887         info = rdev->int_scan_req ? &rdev->int_scan_req->info :
15888                 &rdev->scan_req->info;
15889         if (info->scan_start_tsf &&
15890             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
15891                                info->scan_start_tsf, NL80211_BSS_PAD) ||
15892              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
15893                      info->tsf_bssid)))
15894                 goto nla_put_failure;
15895
15896         return 0;
15897  nla_put_failure:
15898         return -ENOBUFS;
15899 }
15900
15901 static int nl80211_prep_scan_msg(struct sk_buff *msg,
15902                                  struct cfg80211_registered_device *rdev,
15903                                  struct wireless_dev *wdev,
15904                                  u32 portid, u32 seq, int flags,
15905                                  u32 cmd)
15906 {
15907         void *hdr;
15908
15909         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
15910         if (!hdr)
15911                 return -1;
15912
15913         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15914             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15915                                          wdev->netdev->ifindex)) ||
15916             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15917                               NL80211_ATTR_PAD))
15918                 goto nla_put_failure;
15919
15920         /* ignore errors and send incomplete event anyway */
15921         nl80211_add_scan_req(msg, rdev);
15922
15923         genlmsg_end(msg, hdr);
15924         return 0;
15925
15926  nla_put_failure:
15927         genlmsg_cancel(msg, hdr);
15928         return -EMSGSIZE;
15929 }
15930
15931 static int
15932 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
15933                             struct cfg80211_sched_scan_request *req, u32 cmd)
15934 {
15935         void *hdr;
15936
15937         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15938         if (!hdr)
15939                 return -1;
15940
15941         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
15942                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
15943             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
15944             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
15945                               NL80211_ATTR_PAD))
15946                 goto nla_put_failure;
15947
15948         genlmsg_end(msg, hdr);
15949         return 0;
15950
15951  nla_put_failure:
15952         genlmsg_cancel(msg, hdr);
15953         return -EMSGSIZE;
15954 }
15955
15956 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
15957                              struct wireless_dev *wdev)
15958 {
15959         struct sk_buff *msg;
15960
15961         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15962         if (!msg)
15963                 return;
15964
15965         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15966                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
15967                 nlmsg_free(msg);
15968                 return;
15969         }
15970
15971         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15972                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
15973 }
15974
15975 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
15976                                        struct wireless_dev *wdev, bool aborted)
15977 {
15978         struct sk_buff *msg;
15979
15980         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15981         if (!msg)
15982                 return NULL;
15983
15984         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
15985                                   aborted ? NL80211_CMD_SCAN_ABORTED :
15986                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
15987                 nlmsg_free(msg);
15988                 return NULL;
15989         }
15990
15991         return msg;
15992 }
15993
15994 /* send message created by nl80211_build_scan_msg() */
15995 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
15996                            struct sk_buff *msg)
15997 {
15998         if (!msg)
15999                 return;
16000
16001         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16002                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16003 }
16004
16005 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
16006 {
16007         struct sk_buff *msg;
16008
16009         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16010         if (!msg)
16011                 return;
16012
16013         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
16014                 nlmsg_free(msg);
16015                 return;
16016         }
16017
16018         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
16019                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
16020 }
16021
16022 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
16023                                           struct regulatory_request *request)
16024 {
16025         /* Userspace can always count this one always being set */
16026         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
16027                 goto nla_put_failure;
16028
16029         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
16030                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16031                                NL80211_REGDOM_TYPE_WORLD))
16032                         goto nla_put_failure;
16033         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
16034                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16035                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
16036                         goto nla_put_failure;
16037         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
16038                    request->intersect) {
16039                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16040                                NL80211_REGDOM_TYPE_INTERSECTION))
16041                         goto nla_put_failure;
16042         } else {
16043                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
16044                                NL80211_REGDOM_TYPE_COUNTRY) ||
16045                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
16046                                    request->alpha2))
16047                         goto nla_put_failure;
16048         }
16049
16050         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
16051                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
16052
16053                 if (wiphy &&
16054                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
16055                         goto nla_put_failure;
16056
16057                 if (wiphy &&
16058                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
16059                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
16060                         goto nla_put_failure;
16061         }
16062
16063         return true;
16064
16065 nla_put_failure:
16066         return false;
16067 }
16068
16069 /*
16070  * This can happen on global regulatory changes or device specific settings
16071  * based on custom regulatory domains.
16072  */
16073 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
16074                                      struct regulatory_request *request)
16075 {
16076         struct sk_buff *msg;
16077         void *hdr;
16078
16079         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16080         if (!msg)
16081                 return;
16082
16083         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
16084         if (!hdr)
16085                 goto nla_put_failure;
16086
16087         if (!nl80211_reg_change_event_fill(msg, request))
16088                 goto nla_put_failure;
16089
16090         genlmsg_end(msg, hdr);
16091
16092         rcu_read_lock();
16093         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16094                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16095         rcu_read_unlock();
16096
16097         return;
16098
16099 nla_put_failure:
16100         nlmsg_free(msg);
16101 }
16102
16103 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
16104                                     struct net_device *netdev,
16105                                     const u8 *buf, size_t len,
16106                                     enum nl80211_commands cmd, gfp_t gfp,
16107                                     int uapsd_queues, const u8 *req_ies,
16108                                     size_t req_ies_len, bool reconnect)
16109 {
16110         struct sk_buff *msg;
16111         void *hdr;
16112
16113         msg = nlmsg_new(100 + len + req_ies_len, gfp);
16114         if (!msg)
16115                 return;
16116
16117         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16118         if (!hdr) {
16119                 nlmsg_free(msg);
16120                 return;
16121         }
16122
16123         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16124             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16125             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16126             (req_ies &&
16127              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
16128                 goto nla_put_failure;
16129
16130         if (reconnect && nla_put_flag(msg, NL80211_ATTR_RECONNECT_REQUESTED))
16131                 goto nla_put_failure;
16132
16133         if (uapsd_queues >= 0) {
16134                 struct nlattr *nla_wmm =
16135                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
16136                 if (!nla_wmm)
16137                         goto nla_put_failure;
16138
16139                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
16140                                uapsd_queues))
16141                         goto nla_put_failure;
16142
16143                 nla_nest_end(msg, nla_wmm);
16144         }
16145
16146         genlmsg_end(msg, hdr);
16147
16148         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16149                                 NL80211_MCGRP_MLME, gfp);
16150         return;
16151
16152  nla_put_failure:
16153         nlmsg_free(msg);
16154 }
16155
16156 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
16157                           struct net_device *netdev, const u8 *buf,
16158                           size_t len, gfp_t gfp)
16159 {
16160         nl80211_send_mlme_event(rdev, netdev, buf, len,
16161                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0,
16162                                 false);
16163 }
16164
16165 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
16166                            struct net_device *netdev, const u8 *buf,
16167                            size_t len, gfp_t gfp, int uapsd_queues,
16168                            const u8 *req_ies, size_t req_ies_len)
16169 {
16170         nl80211_send_mlme_event(rdev, netdev, buf, len,
16171                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
16172                                 req_ies, req_ies_len, false);
16173 }
16174
16175 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
16176                          struct net_device *netdev, const u8 *buf,
16177                          size_t len, bool reconnect, gfp_t gfp)
16178 {
16179         nl80211_send_mlme_event(rdev, netdev, buf, len,
16180                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0,
16181                                 reconnect);
16182 }
16183
16184 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
16185                            struct net_device *netdev, const u8 *buf,
16186                            size_t len, bool reconnect, gfp_t gfp)
16187 {
16188         nl80211_send_mlme_event(rdev, netdev, buf, len,
16189                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0,
16190                                 reconnect);
16191 }
16192
16193 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
16194                                   size_t len)
16195 {
16196         struct wireless_dev *wdev = dev->ieee80211_ptr;
16197         struct wiphy *wiphy = wdev->wiphy;
16198         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16199         const struct ieee80211_mgmt *mgmt = (void *)buf;
16200         u32 cmd;
16201
16202         if (WARN_ON(len < 2))
16203                 return;
16204
16205         if (ieee80211_is_deauth(mgmt->frame_control)) {
16206                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
16207         } else if (ieee80211_is_disassoc(mgmt->frame_control)) {
16208                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
16209         } else if (ieee80211_is_beacon(mgmt->frame_control)) {
16210                 if (wdev->unprot_beacon_reported &&
16211                     elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000)
16212                         return;
16213                 cmd = NL80211_CMD_UNPROT_BEACON;
16214                 wdev->unprot_beacon_reported = jiffies;
16215         } else {
16216                 return;
16217         }
16218
16219         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
16220         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
16221                                 NULL, 0, false);
16222 }
16223 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
16224
16225 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
16226                                       struct net_device *netdev, int cmd,
16227                                       const u8 *addr, gfp_t gfp)
16228 {
16229         struct sk_buff *msg;
16230         void *hdr;
16231
16232         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16233         if (!msg)
16234                 return;
16235
16236         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16237         if (!hdr) {
16238                 nlmsg_free(msg);
16239                 return;
16240         }
16241
16242         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16243             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16244             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16245             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16246                 goto nla_put_failure;
16247
16248         genlmsg_end(msg, hdr);
16249
16250         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16251                                 NL80211_MCGRP_MLME, gfp);
16252         return;
16253
16254  nla_put_failure:
16255         nlmsg_free(msg);
16256 }
16257
16258 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
16259                                struct net_device *netdev, const u8 *addr,
16260                                gfp_t gfp)
16261 {
16262         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
16263                                   addr, gfp);
16264 }
16265
16266 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
16267                                 struct net_device *netdev, const u8 *addr,
16268                                 gfp_t gfp)
16269 {
16270         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
16271                                   addr, gfp);
16272 }
16273
16274 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
16275                                  struct net_device *netdev,
16276                                  struct cfg80211_connect_resp_params *cr,
16277                                  gfp_t gfp)
16278 {
16279         struct sk_buff *msg;
16280         void *hdr;
16281
16282         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
16283                         cr->fils.kek_len + cr->fils.pmk_len +
16284                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16285         if (!msg)
16286                 return;
16287
16288         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
16289         if (!hdr) {
16290                 nlmsg_free(msg);
16291                 return;
16292         }
16293
16294         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16295             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16296             (cr->bssid &&
16297              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
16298             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
16299                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
16300                         cr->status) ||
16301             (cr->status < 0 &&
16302              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
16303               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
16304                           cr->timeout_reason))) ||
16305             (cr->req_ie &&
16306              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
16307             (cr->resp_ie &&
16308              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
16309                      cr->resp_ie)) ||
16310             (cr->fils.update_erp_next_seq_num &&
16311              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16312                          cr->fils.erp_next_seq_num)) ||
16313             (cr->status == WLAN_STATUS_SUCCESS &&
16314              ((cr->fils.kek &&
16315                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
16316                        cr->fils.kek)) ||
16317               (cr->fils.pmk &&
16318                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
16319               (cr->fils.pmkid &&
16320                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
16321                 goto nla_put_failure;
16322
16323         genlmsg_end(msg, hdr);
16324
16325         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16326                                 NL80211_MCGRP_MLME, gfp);
16327         return;
16328
16329  nla_put_failure:
16330         nlmsg_free(msg);
16331 }
16332
16333 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
16334                          struct net_device *netdev,
16335                          struct cfg80211_roam_info *info, gfp_t gfp)
16336 {
16337         struct sk_buff *msg;
16338         void *hdr;
16339         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
16340
16341         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
16342                         info->fils.kek_len + info->fils.pmk_len +
16343                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
16344         if (!msg)
16345                 return;
16346
16347         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
16348         if (!hdr) {
16349                 nlmsg_free(msg);
16350                 return;
16351         }
16352
16353         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16354             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16355             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
16356             (info->req_ie &&
16357              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
16358                      info->req_ie)) ||
16359             (info->resp_ie &&
16360              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
16361                      info->resp_ie)) ||
16362             (info->fils.update_erp_next_seq_num &&
16363              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
16364                          info->fils.erp_next_seq_num)) ||
16365             (info->fils.kek &&
16366              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
16367                      info->fils.kek)) ||
16368             (info->fils.pmk &&
16369              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
16370             (info->fils.pmkid &&
16371              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
16372                 goto nla_put_failure;
16373
16374         genlmsg_end(msg, hdr);
16375
16376         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16377                                 NL80211_MCGRP_MLME, gfp);
16378         return;
16379
16380  nla_put_failure:
16381         nlmsg_free(msg);
16382 }
16383
16384 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
16385                                   struct net_device *netdev, const u8 *bssid)
16386 {
16387         struct sk_buff *msg;
16388         void *hdr;
16389
16390         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16391         if (!msg)
16392                 return;
16393
16394         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
16395         if (!hdr) {
16396                 nlmsg_free(msg);
16397                 return;
16398         }
16399
16400         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16401             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16402             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16403                 goto nla_put_failure;
16404
16405         genlmsg_end(msg, hdr);
16406
16407         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16408                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16409         return;
16410
16411  nla_put_failure:
16412         nlmsg_free(msg);
16413 }
16414
16415 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
16416                                struct net_device *netdev, u16 reason,
16417                                const u8 *ie, size_t ie_len, bool from_ap)
16418 {
16419         struct sk_buff *msg;
16420         void *hdr;
16421
16422         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
16423         if (!msg)
16424                 return;
16425
16426         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
16427         if (!hdr) {
16428                 nlmsg_free(msg);
16429                 return;
16430         }
16431
16432         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16433             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16434             (reason &&
16435              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
16436             (from_ap &&
16437              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
16438             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
16439                 goto nla_put_failure;
16440
16441         genlmsg_end(msg, hdr);
16442
16443         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16444                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16445         return;
16446
16447  nla_put_failure:
16448         nlmsg_free(msg);
16449 }
16450
16451 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
16452                              struct net_device *netdev, const u8 *bssid,
16453                              gfp_t gfp)
16454 {
16455         struct sk_buff *msg;
16456         void *hdr;
16457
16458         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16459         if (!msg)
16460                 return;
16461
16462         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
16463         if (!hdr) {
16464                 nlmsg_free(msg);
16465                 return;
16466         }
16467
16468         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16469             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16470             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16471                 goto nla_put_failure;
16472
16473         genlmsg_end(msg, hdr);
16474
16475         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16476                                 NL80211_MCGRP_MLME, gfp);
16477         return;
16478
16479  nla_put_failure:
16480         nlmsg_free(msg);
16481 }
16482
16483 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
16484                                         const u8 *ie, u8 ie_len,
16485                                         int sig_dbm, gfp_t gfp)
16486 {
16487         struct wireless_dev *wdev = dev->ieee80211_ptr;
16488         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16489         struct sk_buff *msg;
16490         void *hdr;
16491
16492         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
16493                 return;
16494
16495         trace_cfg80211_notify_new_peer_candidate(dev, addr);
16496
16497         msg = nlmsg_new(100 + ie_len, gfp);
16498         if (!msg)
16499                 return;
16500
16501         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
16502         if (!hdr) {
16503                 nlmsg_free(msg);
16504                 return;
16505         }
16506
16507         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16508             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16509             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16510             (ie_len && ie &&
16511              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
16512             (sig_dbm &&
16513              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
16514                 goto nla_put_failure;
16515
16516         genlmsg_end(msg, hdr);
16517
16518         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16519                                 NL80211_MCGRP_MLME, gfp);
16520         return;
16521
16522  nla_put_failure:
16523         nlmsg_free(msg);
16524 }
16525 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
16526
16527 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
16528                                  struct net_device *netdev, const u8 *addr,
16529                                  enum nl80211_key_type key_type, int key_id,
16530                                  const u8 *tsc, gfp_t gfp)
16531 {
16532         struct sk_buff *msg;
16533         void *hdr;
16534
16535         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16536         if (!msg)
16537                 return;
16538
16539         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
16540         if (!hdr) {
16541                 nlmsg_free(msg);
16542                 return;
16543         }
16544
16545         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16546             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16547             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
16548             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
16549             (key_id != -1 &&
16550              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
16551             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
16552                 goto nla_put_failure;
16553
16554         genlmsg_end(msg, hdr);
16555
16556         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16557                                 NL80211_MCGRP_MLME, gfp);
16558         return;
16559
16560  nla_put_failure:
16561         nlmsg_free(msg);
16562 }
16563
16564 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
16565                                     struct ieee80211_channel *channel_before,
16566                                     struct ieee80211_channel *channel_after)
16567 {
16568         struct sk_buff *msg;
16569         void *hdr;
16570         struct nlattr *nl_freq;
16571
16572         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
16573         if (!msg)
16574                 return;
16575
16576         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
16577         if (!hdr) {
16578                 nlmsg_free(msg);
16579                 return;
16580         }
16581
16582         /*
16583          * Since we are applying the beacon hint to a wiphy we know its
16584          * wiphy_idx is valid
16585          */
16586         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
16587                 goto nla_put_failure;
16588
16589         /* Before */
16590         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
16591         if (!nl_freq)
16592                 goto nla_put_failure;
16593
16594         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
16595                 goto nla_put_failure;
16596         nla_nest_end(msg, nl_freq);
16597
16598         /* After */
16599         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
16600         if (!nl_freq)
16601                 goto nla_put_failure;
16602
16603         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
16604                 goto nla_put_failure;
16605         nla_nest_end(msg, nl_freq);
16606
16607         genlmsg_end(msg, hdr);
16608
16609         rcu_read_lock();
16610         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
16611                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
16612         rcu_read_unlock();
16613
16614         return;
16615
16616 nla_put_failure:
16617         nlmsg_free(msg);
16618 }
16619
16620 static void nl80211_send_remain_on_chan_event(
16621         int cmd, struct cfg80211_registered_device *rdev,
16622         struct wireless_dev *wdev, u64 cookie,
16623         struct ieee80211_channel *chan,
16624         unsigned int duration, gfp_t gfp)
16625 {
16626         struct sk_buff *msg;
16627         void *hdr;
16628
16629         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16630         if (!msg)
16631                 return;
16632
16633         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16634         if (!hdr) {
16635                 nlmsg_free(msg);
16636                 return;
16637         }
16638
16639         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16640             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16641                                          wdev->netdev->ifindex)) ||
16642             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16643                               NL80211_ATTR_PAD) ||
16644             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
16645             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
16646                         NL80211_CHAN_NO_HT) ||
16647             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16648                               NL80211_ATTR_PAD))
16649                 goto nla_put_failure;
16650
16651         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
16652             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
16653                 goto nla_put_failure;
16654
16655         genlmsg_end(msg, hdr);
16656
16657         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16658                                 NL80211_MCGRP_MLME, gfp);
16659         return;
16660
16661  nla_put_failure:
16662         nlmsg_free(msg);
16663 }
16664
16665 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
16666                                struct ieee80211_channel *chan,
16667                                unsigned int duration, gfp_t gfp)
16668 {
16669         struct wiphy *wiphy = wdev->wiphy;
16670         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16671
16672         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
16673         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
16674                                           rdev, wdev, cookie, chan,
16675                                           duration, gfp);
16676 }
16677 EXPORT_SYMBOL(cfg80211_ready_on_channel);
16678
16679 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
16680                                         struct ieee80211_channel *chan,
16681                                         gfp_t gfp)
16682 {
16683         struct wiphy *wiphy = wdev->wiphy;
16684         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16685
16686         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
16687         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
16688                                           rdev, wdev, cookie, chan, 0, gfp);
16689 }
16690 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
16691
16692 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
16693                                         struct ieee80211_channel *chan,
16694                                         gfp_t gfp)
16695 {
16696         struct wiphy *wiphy = wdev->wiphy;
16697         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16698
16699         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
16700         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
16701                                           rdev, wdev, cookie, chan, 0, gfp);
16702 }
16703 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
16704
16705 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
16706                       struct station_info *sinfo, gfp_t gfp)
16707 {
16708         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16709         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16710         struct sk_buff *msg;
16711
16712         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
16713
16714         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16715         if (!msg)
16716                 return;
16717
16718         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
16719                                  rdev, dev, mac_addr, sinfo) < 0) {
16720                 nlmsg_free(msg);
16721                 return;
16722         }
16723
16724         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16725                                 NL80211_MCGRP_MLME, gfp);
16726 }
16727 EXPORT_SYMBOL(cfg80211_new_sta);
16728
16729 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
16730                             struct station_info *sinfo, gfp_t gfp)
16731 {
16732         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16733         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16734         struct sk_buff *msg;
16735         struct station_info empty_sinfo = {};
16736
16737         if (!sinfo)
16738                 sinfo = &empty_sinfo;
16739
16740         trace_cfg80211_del_sta(dev, mac_addr);
16741
16742         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16743         if (!msg) {
16744                 cfg80211_sinfo_release_content(sinfo);
16745                 return;
16746         }
16747
16748         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
16749                                  rdev, dev, mac_addr, sinfo) < 0) {
16750                 nlmsg_free(msg);
16751                 return;
16752         }
16753
16754         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16755                                 NL80211_MCGRP_MLME, gfp);
16756 }
16757 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
16758
16759 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
16760                           enum nl80211_connect_failed_reason reason,
16761                           gfp_t gfp)
16762 {
16763         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
16764         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16765         struct sk_buff *msg;
16766         void *hdr;
16767
16768         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
16769         if (!msg)
16770                 return;
16771
16772         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
16773         if (!hdr) {
16774                 nlmsg_free(msg);
16775                 return;
16776         }
16777
16778         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16779             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
16780             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
16781                 goto nla_put_failure;
16782
16783         genlmsg_end(msg, hdr);
16784
16785         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16786                                 NL80211_MCGRP_MLME, gfp);
16787         return;
16788
16789  nla_put_failure:
16790         nlmsg_free(msg);
16791 }
16792 EXPORT_SYMBOL(cfg80211_conn_failed);
16793
16794 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
16795                                        const u8 *addr, gfp_t gfp)
16796 {
16797         struct wireless_dev *wdev = dev->ieee80211_ptr;
16798         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16799         struct sk_buff *msg;
16800         void *hdr;
16801         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
16802
16803         if (!nlportid)
16804                 return false;
16805
16806         msg = nlmsg_new(100, gfp);
16807         if (!msg)
16808                 return true;
16809
16810         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
16811         if (!hdr) {
16812                 nlmsg_free(msg);
16813                 return true;
16814         }
16815
16816         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16817             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16818             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
16819                 goto nla_put_failure;
16820
16821         genlmsg_end(msg, hdr);
16822         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16823         return true;
16824
16825  nla_put_failure:
16826         nlmsg_free(msg);
16827         return true;
16828 }
16829
16830 bool cfg80211_rx_spurious_frame(struct net_device *dev,
16831                                 const u8 *addr, gfp_t gfp)
16832 {
16833         struct wireless_dev *wdev = dev->ieee80211_ptr;
16834         bool ret;
16835
16836         trace_cfg80211_rx_spurious_frame(dev, addr);
16837
16838         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16839                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
16840                 trace_cfg80211_return_bool(false);
16841                 return false;
16842         }
16843         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
16844                                          addr, gfp);
16845         trace_cfg80211_return_bool(ret);
16846         return ret;
16847 }
16848 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
16849
16850 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
16851                                         const u8 *addr, gfp_t gfp)
16852 {
16853         struct wireless_dev *wdev = dev->ieee80211_ptr;
16854         bool ret;
16855
16856         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
16857
16858         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
16859                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
16860                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
16861                 trace_cfg80211_return_bool(false);
16862                 return false;
16863         }
16864         ret = __nl80211_unexpected_frame(dev,
16865                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
16866                                          addr, gfp);
16867         trace_cfg80211_return_bool(ret);
16868         return ret;
16869 }
16870 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
16871
16872 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
16873                       struct wireless_dev *wdev, u32 nlportid,
16874                       int freq, int sig_dbm,
16875                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
16876 {
16877         struct net_device *netdev = wdev->netdev;
16878         struct sk_buff *msg;
16879         void *hdr;
16880
16881         msg = nlmsg_new(100 + len, gfp);
16882         if (!msg)
16883                 return -ENOMEM;
16884
16885         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16886         if (!hdr) {
16887                 nlmsg_free(msg);
16888                 return -ENOMEM;
16889         }
16890
16891         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16892             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16893                                         netdev->ifindex)) ||
16894             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16895                               NL80211_ATTR_PAD) ||
16896             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) ||
16897             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) ||
16898             (sig_dbm &&
16899              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16900             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16901             (flags &&
16902              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
16903                 goto nla_put_failure;
16904
16905         genlmsg_end(msg, hdr);
16906
16907         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16908
16909  nla_put_failure:
16910         nlmsg_free(msg);
16911         return -ENOBUFS;
16912 }
16913
16914 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie,
16915                                     const u8 *buf, size_t len, bool ack,
16916                                     gfp_t gfp, enum nl80211_commands command)
16917 {
16918         struct wiphy *wiphy = wdev->wiphy;
16919         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16920         struct net_device *netdev = wdev->netdev;
16921         struct sk_buff *msg;
16922         void *hdr;
16923
16924         if (command == NL80211_CMD_FRAME_TX_STATUS)
16925                 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
16926         else
16927                 trace_cfg80211_control_port_tx_status(wdev, cookie, ack);
16928
16929         msg = nlmsg_new(100 + len, gfp);
16930         if (!msg)
16931                 return;
16932
16933         hdr = nl80211hdr_put(msg, 0, 0, 0, command);
16934         if (!hdr) {
16935                 nlmsg_free(msg);
16936                 return;
16937         }
16938
16939         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16940             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16941                                    netdev->ifindex)) ||
16942             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16943                               NL80211_ATTR_PAD) ||
16944             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
16945             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16946                               NL80211_ATTR_PAD) ||
16947             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
16948                 goto nla_put_failure;
16949
16950         genlmsg_end(msg, hdr);
16951
16952         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16953                                 NL80211_MCGRP_MLME, gfp);
16954         return;
16955
16956 nla_put_failure:
16957         nlmsg_free(msg);
16958 }
16959
16960 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie,
16961                                      const u8 *buf, size_t len, bool ack,
16962                                      gfp_t gfp)
16963 {
16964         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16965                                 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS);
16966 }
16967 EXPORT_SYMBOL(cfg80211_control_port_tx_status);
16968
16969 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
16970                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
16971 {
16972         nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp,
16973                                 NL80211_CMD_FRAME_TX_STATUS);
16974 }
16975 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
16976
16977 static int __nl80211_rx_control_port(struct net_device *dev,
16978                                      struct sk_buff *skb,
16979                                      bool unencrypted, gfp_t gfp)
16980 {
16981         struct wireless_dev *wdev = dev->ieee80211_ptr;
16982         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16983         struct ethhdr *ehdr = eth_hdr(skb);
16984         const u8 *addr = ehdr->h_source;
16985         u16 proto = be16_to_cpu(skb->protocol);
16986         struct sk_buff *msg;
16987         void *hdr;
16988         struct nlattr *frame;
16989
16990         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
16991
16992         if (!nlportid)
16993                 return -ENOENT;
16994
16995         msg = nlmsg_new(100 + skb->len, gfp);
16996         if (!msg)
16997                 return -ENOMEM;
16998
16999         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
17000         if (!hdr) {
17001                 nlmsg_free(msg);
17002                 return -ENOBUFS;
17003         }
17004
17005         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17006             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17007             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17008                               NL80211_ATTR_PAD) ||
17009             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17010             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
17011             (unencrypted && nla_put_flag(msg,
17012                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
17013                 goto nla_put_failure;
17014
17015         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
17016         if (!frame)
17017                 goto nla_put_failure;
17018
17019         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
17020         genlmsg_end(msg, hdr);
17021
17022         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17023
17024  nla_put_failure:
17025         nlmsg_free(msg);
17026         return -ENOBUFS;
17027 }
17028
17029 bool cfg80211_rx_control_port(struct net_device *dev,
17030                               struct sk_buff *skb, bool unencrypted)
17031 {
17032         int ret;
17033
17034         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
17035         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
17036         trace_cfg80211_return_bool(ret == 0);
17037         return ret == 0;
17038 }
17039 EXPORT_SYMBOL(cfg80211_rx_control_port);
17040
17041 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
17042                                             const char *mac, gfp_t gfp)
17043 {
17044         struct wireless_dev *wdev = dev->ieee80211_ptr;
17045         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17046         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17047         void **cb;
17048
17049         if (!msg)
17050                 return NULL;
17051
17052         cb = (void **)msg->cb;
17053
17054         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
17055         if (!cb[0]) {
17056                 nlmsg_free(msg);
17057                 return NULL;
17058         }
17059
17060         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17061             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17062                 goto nla_put_failure;
17063
17064         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17065                 goto nla_put_failure;
17066
17067         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
17068         if (!cb[1])
17069                 goto nla_put_failure;
17070
17071         cb[2] = rdev;
17072
17073         return msg;
17074  nla_put_failure:
17075         nlmsg_free(msg);
17076         return NULL;
17077 }
17078
17079 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
17080 {
17081         void **cb = (void **)msg->cb;
17082         struct cfg80211_registered_device *rdev = cb[2];
17083
17084         nla_nest_end(msg, cb[1]);
17085         genlmsg_end(msg, cb[0]);
17086
17087         memset(msg->cb, 0, sizeof(msg->cb));
17088
17089         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17090                                 NL80211_MCGRP_MLME, gfp);
17091 }
17092
17093 void cfg80211_cqm_rssi_notify(struct net_device *dev,
17094                               enum nl80211_cqm_rssi_threshold_event rssi_event,
17095                               s32 rssi_level, gfp_t gfp)
17096 {
17097         struct sk_buff *msg;
17098         struct wireless_dev *wdev = dev->ieee80211_ptr;
17099         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17100
17101         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
17102
17103         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
17104                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
17105                 return;
17106
17107         if (wdev->cqm_config) {
17108                 wdev->cqm_config->last_rssi_event_value = rssi_level;
17109
17110                 cfg80211_cqm_rssi_update(rdev, dev);
17111
17112                 if (rssi_level == 0)
17113                         rssi_level = wdev->cqm_config->last_rssi_event_value;
17114         }
17115
17116         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17117         if (!msg)
17118                 return;
17119
17120         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
17121                         rssi_event))
17122                 goto nla_put_failure;
17123
17124         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
17125                                       rssi_level))
17126                 goto nla_put_failure;
17127
17128         cfg80211_send_cqm(msg, gfp);
17129
17130         return;
17131
17132  nla_put_failure:
17133         nlmsg_free(msg);
17134 }
17135 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
17136
17137 void cfg80211_cqm_txe_notify(struct net_device *dev,
17138                              const u8 *peer, u32 num_packets,
17139                              u32 rate, u32 intvl, gfp_t gfp)
17140 {
17141         struct sk_buff *msg;
17142
17143         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17144         if (!msg)
17145                 return;
17146
17147         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
17148                 goto nla_put_failure;
17149
17150         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
17151                 goto nla_put_failure;
17152
17153         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
17154                 goto nla_put_failure;
17155
17156         cfg80211_send_cqm(msg, gfp);
17157         return;
17158
17159  nla_put_failure:
17160         nlmsg_free(msg);
17161 }
17162 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
17163
17164 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
17165                                  const u8 *peer, u32 num_packets, gfp_t gfp)
17166 {
17167         struct sk_buff *msg;
17168
17169         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
17170
17171         msg = cfg80211_prepare_cqm(dev, peer, gfp);
17172         if (!msg)
17173                 return;
17174
17175         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
17176                 goto nla_put_failure;
17177
17178         cfg80211_send_cqm(msg, gfp);
17179         return;
17180
17181  nla_put_failure:
17182         nlmsg_free(msg);
17183 }
17184 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
17185
17186 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
17187 {
17188         struct sk_buff *msg;
17189
17190         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
17191         if (!msg)
17192                 return;
17193
17194         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
17195                 goto nla_put_failure;
17196
17197         cfg80211_send_cqm(msg, gfp);
17198         return;
17199
17200  nla_put_failure:
17201         nlmsg_free(msg);
17202 }
17203 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
17204
17205 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
17206                                      struct net_device *netdev, const u8 *bssid,
17207                                      const u8 *replay_ctr, gfp_t gfp)
17208 {
17209         struct sk_buff *msg;
17210         struct nlattr *rekey_attr;
17211         void *hdr;
17212
17213         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17214         if (!msg)
17215                 return;
17216
17217         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
17218         if (!hdr) {
17219                 nlmsg_free(msg);
17220                 return;
17221         }
17222
17223         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17224             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17225             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
17226                 goto nla_put_failure;
17227
17228         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
17229         if (!rekey_attr)
17230                 goto nla_put_failure;
17231
17232         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
17233                     NL80211_REPLAY_CTR_LEN, replay_ctr))
17234                 goto nla_put_failure;
17235
17236         nla_nest_end(msg, rekey_attr);
17237
17238         genlmsg_end(msg, hdr);
17239
17240         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17241                                 NL80211_MCGRP_MLME, gfp);
17242         return;
17243
17244  nla_put_failure:
17245         nlmsg_free(msg);
17246 }
17247
17248 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
17249                                const u8 *replay_ctr, gfp_t gfp)
17250 {
17251         struct wireless_dev *wdev = dev->ieee80211_ptr;
17252         struct wiphy *wiphy = wdev->wiphy;
17253         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17254
17255         trace_cfg80211_gtk_rekey_notify(dev, bssid);
17256         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
17257 }
17258 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
17259
17260 static void
17261 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
17262                                struct net_device *netdev, int index,
17263                                const u8 *bssid, bool preauth, gfp_t gfp)
17264 {
17265         struct sk_buff *msg;
17266         struct nlattr *attr;
17267         void *hdr;
17268
17269         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17270         if (!msg)
17271                 return;
17272
17273         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
17274         if (!hdr) {
17275                 nlmsg_free(msg);
17276                 return;
17277         }
17278
17279         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17280             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17281                 goto nla_put_failure;
17282
17283         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
17284         if (!attr)
17285                 goto nla_put_failure;
17286
17287         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
17288             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
17289             (preauth &&
17290              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
17291                 goto nla_put_failure;
17292
17293         nla_nest_end(msg, attr);
17294
17295         genlmsg_end(msg, hdr);
17296
17297         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17298                                 NL80211_MCGRP_MLME, gfp);
17299         return;
17300
17301  nla_put_failure:
17302         nlmsg_free(msg);
17303 }
17304
17305 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
17306                                      const u8 *bssid, bool preauth, gfp_t gfp)
17307 {
17308         struct wireless_dev *wdev = dev->ieee80211_ptr;
17309         struct wiphy *wiphy = wdev->wiphy;
17310         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17311
17312         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
17313         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
17314 }
17315 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
17316
17317 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
17318                                      struct net_device *netdev,
17319                                      struct cfg80211_chan_def *chandef,
17320                                      gfp_t gfp,
17321                                      enum nl80211_commands notif,
17322                                      u8 count, bool quiet)
17323 {
17324         struct sk_buff *msg;
17325         void *hdr;
17326
17327         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17328         if (!msg)
17329                 return;
17330
17331         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
17332         if (!hdr) {
17333                 nlmsg_free(msg);
17334                 return;
17335         }
17336
17337         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
17338                 goto nla_put_failure;
17339
17340         if (nl80211_send_chandef(msg, chandef))
17341                 goto nla_put_failure;
17342
17343         if (notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) {
17344                 if (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))
17345                         goto nla_put_failure;
17346                 if (quiet &&
17347                     nla_put_flag(msg, NL80211_ATTR_CH_SWITCH_BLOCK_TX))
17348                         goto nla_put_failure;
17349         }
17350
17351         genlmsg_end(msg, hdr);
17352
17353         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17354                                 NL80211_MCGRP_MLME, gfp);
17355         return;
17356
17357  nla_put_failure:
17358         nlmsg_free(msg);
17359 }
17360
17361 void cfg80211_ch_switch_notify(struct net_device *dev,
17362                                struct cfg80211_chan_def *chandef)
17363 {
17364         struct wireless_dev *wdev = dev->ieee80211_ptr;
17365         struct wiphy *wiphy = wdev->wiphy;
17366         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17367
17368         ASSERT_WDEV_LOCK(wdev);
17369
17370         trace_cfg80211_ch_switch_notify(dev, chandef);
17371
17372         wdev->chandef = *chandef;
17373         wdev->preset_chandef = *chandef;
17374
17375         if (wdev->iftype == NL80211_IFTYPE_STATION &&
17376             !WARN_ON(!wdev->current_bss))
17377                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
17378
17379         cfg80211_sched_dfs_chan_update(rdev);
17380
17381         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17382                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0, false);
17383 }
17384 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
17385
17386 void cfg80211_ch_switch_started_notify(struct net_device *dev,
17387                                        struct cfg80211_chan_def *chandef,
17388                                        u8 count, bool quiet)
17389 {
17390         struct wireless_dev *wdev = dev->ieee80211_ptr;
17391         struct wiphy *wiphy = wdev->wiphy;
17392         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17393
17394         trace_cfg80211_ch_switch_started_notify(dev, chandef);
17395
17396         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
17397                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY,
17398                                  count, quiet);
17399 }
17400 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
17401
17402 void
17403 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
17404                      const struct cfg80211_chan_def *chandef,
17405                      enum nl80211_radar_event event,
17406                      struct net_device *netdev, gfp_t gfp)
17407 {
17408         struct sk_buff *msg;
17409         void *hdr;
17410
17411         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17412         if (!msg)
17413                 return;
17414
17415         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
17416         if (!hdr) {
17417                 nlmsg_free(msg);
17418                 return;
17419         }
17420
17421         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17422                 goto nla_put_failure;
17423
17424         /* NOP and radar events don't need a netdev parameter */
17425         if (netdev) {
17426                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
17427
17428                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17429                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17430                                       NL80211_ATTR_PAD))
17431                         goto nla_put_failure;
17432         }
17433
17434         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
17435                 goto nla_put_failure;
17436
17437         if (nl80211_send_chandef(msg, chandef))
17438                 goto nla_put_failure;
17439
17440         genlmsg_end(msg, hdr);
17441
17442         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17443                                 NL80211_MCGRP_MLME, gfp);
17444         return;
17445
17446  nla_put_failure:
17447         nlmsg_free(msg);
17448 }
17449
17450 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
17451                                        struct sta_opmode_info *sta_opmode,
17452                                        gfp_t gfp)
17453 {
17454         struct sk_buff *msg;
17455         struct wireless_dev *wdev = dev->ieee80211_ptr;
17456         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17457         void *hdr;
17458
17459         if (WARN_ON(!mac))
17460                 return;
17461
17462         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17463         if (!msg)
17464                 return;
17465
17466         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
17467         if (!hdr) {
17468                 nlmsg_free(msg);
17469                 return;
17470         }
17471
17472         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
17473                 goto nla_put_failure;
17474
17475         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
17476                 goto nla_put_failure;
17477
17478         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
17479                 goto nla_put_failure;
17480
17481         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
17482             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
17483                 goto nla_put_failure;
17484
17485         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
17486             nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
17487                 goto nla_put_failure;
17488
17489         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
17490             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
17491                 goto nla_put_failure;
17492
17493         genlmsg_end(msg, hdr);
17494
17495         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17496                                 NL80211_MCGRP_MLME, gfp);
17497
17498         return;
17499
17500 nla_put_failure:
17501         nlmsg_free(msg);
17502 }
17503 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
17504
17505 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
17506                            u64 cookie, bool acked, s32 ack_signal,
17507                            bool is_valid_ack_signal, gfp_t gfp)
17508 {
17509         struct wireless_dev *wdev = dev->ieee80211_ptr;
17510         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17511         struct sk_buff *msg;
17512         void *hdr;
17513
17514         trace_cfg80211_probe_status(dev, addr, cookie, acked);
17515
17516         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17517
17518         if (!msg)
17519                 return;
17520
17521         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
17522         if (!hdr) {
17523                 nlmsg_free(msg);
17524                 return;
17525         }
17526
17527         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17528             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17529             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
17530             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
17531                               NL80211_ATTR_PAD) ||
17532             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
17533             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
17534                                                 ack_signal)))
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_probe_status);
17547
17548 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame,
17549                                      size_t len, int freq, int sig_dbm)
17550 {
17551         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17552         struct sk_buff *msg;
17553         void *hdr;
17554         struct cfg80211_beacon_registration *reg;
17555
17556         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
17557
17558         spin_lock_bh(&rdev->beacon_registrations_lock);
17559         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
17560                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
17561                 if (!msg) {
17562                         spin_unlock_bh(&rdev->beacon_registrations_lock);
17563                         return;
17564                 }
17565
17566                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
17567                 if (!hdr)
17568                         goto nla_put_failure;
17569
17570                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17571                     (freq &&
17572                      (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
17573                                   KHZ_TO_MHZ(freq)) ||
17574                       nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET,
17575                                   freq % 1000))) ||
17576                     (sig_dbm &&
17577                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
17578                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
17579                         goto nla_put_failure;
17580
17581                 genlmsg_end(msg, hdr);
17582
17583                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
17584         }
17585         spin_unlock_bh(&rdev->beacon_registrations_lock);
17586         return;
17587
17588  nla_put_failure:
17589         spin_unlock_bh(&rdev->beacon_registrations_lock);
17590         nlmsg_free(msg);
17591 }
17592 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz);
17593
17594 #ifdef CONFIG_PM
17595 static int cfg80211_net_detect_results(struct sk_buff *msg,
17596                                        struct cfg80211_wowlan_wakeup *wakeup)
17597 {
17598         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
17599         struct nlattr *nl_results, *nl_match, *nl_freqs;
17600         int i, j;
17601
17602         nl_results = nla_nest_start_noflag(msg,
17603                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
17604         if (!nl_results)
17605                 return -EMSGSIZE;
17606
17607         for (i = 0; i < nd->n_matches; i++) {
17608                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
17609
17610                 nl_match = nla_nest_start_noflag(msg, i);
17611                 if (!nl_match)
17612                         break;
17613
17614                 /* The SSID attribute is optional in nl80211, but for
17615                  * simplicity reasons it's always present in the
17616                  * cfg80211 structure.  If a driver can't pass the
17617                  * SSID, that needs to be changed.  A zero length SSID
17618                  * is still a valid SSID (wildcard), so it cannot be
17619                  * used for this purpose.
17620                  */
17621                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
17622                             match->ssid.ssid)) {
17623                         nla_nest_cancel(msg, nl_match);
17624                         goto out;
17625                 }
17626
17627                 if (match->n_channels) {
17628                         nl_freqs = nla_nest_start_noflag(msg,
17629                                                          NL80211_ATTR_SCAN_FREQUENCIES);
17630                         if (!nl_freqs) {
17631                                 nla_nest_cancel(msg, nl_match);
17632                                 goto out;
17633                         }
17634
17635                         for (j = 0; j < match->n_channels; j++) {
17636                                 if (nla_put_u32(msg, j, match->channels[j])) {
17637                                         nla_nest_cancel(msg, nl_freqs);
17638                                         nla_nest_cancel(msg, nl_match);
17639                                         goto out;
17640                                 }
17641                         }
17642
17643                         nla_nest_end(msg, nl_freqs);
17644                 }
17645
17646                 nla_nest_end(msg, nl_match);
17647         }
17648
17649 out:
17650         nla_nest_end(msg, nl_results);
17651         return 0;
17652 }
17653
17654 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
17655                                    struct cfg80211_wowlan_wakeup *wakeup,
17656                                    gfp_t gfp)
17657 {
17658         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17659         struct sk_buff *msg;
17660         void *hdr;
17661         int size = 200;
17662
17663         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
17664
17665         if (wakeup)
17666                 size += wakeup->packet_present_len;
17667
17668         msg = nlmsg_new(size, gfp);
17669         if (!msg)
17670                 return;
17671
17672         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
17673         if (!hdr)
17674                 goto free_msg;
17675
17676         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17677             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17678                               NL80211_ATTR_PAD))
17679                 goto free_msg;
17680
17681         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
17682                                         wdev->netdev->ifindex))
17683                 goto free_msg;
17684
17685         if (wakeup) {
17686                 struct nlattr *reasons;
17687
17688                 reasons = nla_nest_start_noflag(msg,
17689                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
17690                 if (!reasons)
17691                         goto free_msg;
17692
17693                 if (wakeup->disconnect &&
17694                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
17695                         goto free_msg;
17696                 if (wakeup->magic_pkt &&
17697                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
17698                         goto free_msg;
17699                 if (wakeup->gtk_rekey_failure &&
17700                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
17701                         goto free_msg;
17702                 if (wakeup->eap_identity_req &&
17703                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
17704                         goto free_msg;
17705                 if (wakeup->four_way_handshake &&
17706                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
17707                         goto free_msg;
17708                 if (wakeup->rfkill_release &&
17709                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
17710                         goto free_msg;
17711
17712                 if (wakeup->pattern_idx >= 0 &&
17713                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
17714                                 wakeup->pattern_idx))
17715                         goto free_msg;
17716
17717                 if (wakeup->tcp_match &&
17718                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
17719                         goto free_msg;
17720
17721                 if (wakeup->tcp_connlost &&
17722                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
17723                         goto free_msg;
17724
17725                 if (wakeup->tcp_nomoretokens &&
17726                     nla_put_flag(msg,
17727                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
17728                         goto free_msg;
17729
17730                 if (wakeup->packet) {
17731                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
17732                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
17733
17734                         if (!wakeup->packet_80211) {
17735                                 pkt_attr =
17736                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
17737                                 len_attr =
17738                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
17739                         }
17740
17741                         if (wakeup->packet_len &&
17742                             nla_put_u32(msg, len_attr, wakeup->packet_len))
17743                                 goto free_msg;
17744
17745                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
17746                                     wakeup->packet))
17747                                 goto free_msg;
17748                 }
17749
17750                 if (wakeup->net_detect &&
17751                     cfg80211_net_detect_results(msg, wakeup))
17752                                 goto free_msg;
17753
17754                 nla_nest_end(msg, reasons);
17755         }
17756
17757         genlmsg_end(msg, hdr);
17758
17759         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17760                                 NL80211_MCGRP_MLME, gfp);
17761         return;
17762
17763  free_msg:
17764         nlmsg_free(msg);
17765 }
17766 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
17767 #endif
17768
17769 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
17770                                 enum nl80211_tdls_operation oper,
17771                                 u16 reason_code, gfp_t gfp)
17772 {
17773         struct wireless_dev *wdev = dev->ieee80211_ptr;
17774         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17775         struct sk_buff *msg;
17776         void *hdr;
17777
17778         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
17779                                          reason_code);
17780
17781         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17782         if (!msg)
17783                 return;
17784
17785         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
17786         if (!hdr) {
17787                 nlmsg_free(msg);
17788                 return;
17789         }
17790
17791         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17792             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
17793             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
17794             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
17795             (reason_code > 0 &&
17796              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
17797                 goto nla_put_failure;
17798
17799         genlmsg_end(msg, hdr);
17800
17801         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17802                                 NL80211_MCGRP_MLME, gfp);
17803         return;
17804
17805  nla_put_failure:
17806         nlmsg_free(msg);
17807 }
17808 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
17809
17810 static int nl80211_netlink_notify(struct notifier_block * nb,
17811                                   unsigned long state,
17812                                   void *_notify)
17813 {
17814         struct netlink_notify *notify = _notify;
17815         struct cfg80211_registered_device *rdev;
17816         struct wireless_dev *wdev;
17817         struct cfg80211_beacon_registration *reg, *tmp;
17818
17819         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
17820                 return NOTIFY_DONE;
17821
17822         rcu_read_lock();
17823
17824         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
17825                 struct cfg80211_sched_scan_request *sched_scan_req;
17826
17827                 list_for_each_entry_rcu(sched_scan_req,
17828                                         &rdev->sched_scan_req_list,
17829                                         list) {
17830                         if (sched_scan_req->owner_nlportid == notify->portid) {
17831                                 sched_scan_req->nl_owner_dead = true;
17832                                 schedule_work(&rdev->sched_scan_stop_wk);
17833                         }
17834                 }
17835
17836                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
17837                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
17838
17839                         if (wdev->owner_nlportid == notify->portid) {
17840                                 wdev->nl_owner_dead = true;
17841                                 schedule_work(&rdev->destroy_work);
17842                         } else if (wdev->conn_owner_nlportid == notify->portid) {
17843                                 schedule_work(&wdev->disconnect_wk);
17844                         }
17845
17846                         cfg80211_release_pmsr(wdev, notify->portid);
17847                 }
17848
17849                 spin_lock_bh(&rdev->beacon_registrations_lock);
17850                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
17851                                          list) {
17852                         if (reg->nlportid == notify->portid) {
17853                                 list_del(&reg->list);
17854                                 kfree(reg);
17855                                 break;
17856                         }
17857                 }
17858                 spin_unlock_bh(&rdev->beacon_registrations_lock);
17859         }
17860
17861         rcu_read_unlock();
17862
17863         /*
17864          * It is possible that the user space process that is controlling the
17865          * indoor setting disappeared, so notify the regulatory core.
17866          */
17867         regulatory_netlink_notify(notify->portid);
17868         return NOTIFY_OK;
17869 }
17870
17871 static struct notifier_block nl80211_netlink_notifier = {
17872         .notifier_call = nl80211_netlink_notify,
17873 };
17874
17875 void cfg80211_ft_event(struct net_device *netdev,
17876                        struct cfg80211_ft_event_params *ft_event)
17877 {
17878         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
17879         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17880         struct sk_buff *msg;
17881         void *hdr;
17882
17883         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
17884
17885         if (!ft_event->target_ap)
17886                 return;
17887
17888         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
17889                         GFP_KERNEL);
17890         if (!msg)
17891                 return;
17892
17893         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
17894         if (!hdr)
17895                 goto out;
17896
17897         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17898             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
17899             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
17900                 goto out;
17901
17902         if (ft_event->ies &&
17903             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
17904                 goto out;
17905         if (ft_event->ric_ies &&
17906             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
17907                     ft_event->ric_ies))
17908                 goto out;
17909
17910         genlmsg_end(msg, hdr);
17911
17912         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
17913                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17914         return;
17915  out:
17916         nlmsg_free(msg);
17917 }
17918 EXPORT_SYMBOL(cfg80211_ft_event);
17919
17920 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
17921 {
17922         struct cfg80211_registered_device *rdev;
17923         struct sk_buff *msg;
17924         void *hdr;
17925         u32 nlportid;
17926
17927         rdev = wiphy_to_rdev(wdev->wiphy);
17928         if (!rdev->crit_proto_nlportid)
17929                 return;
17930
17931         nlportid = rdev->crit_proto_nlportid;
17932         rdev->crit_proto_nlportid = 0;
17933
17934         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
17935         if (!msg)
17936                 return;
17937
17938         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
17939         if (!hdr)
17940                 goto nla_put_failure;
17941
17942         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17943             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17944                               NL80211_ATTR_PAD))
17945                 goto nla_put_failure;
17946
17947         genlmsg_end(msg, hdr);
17948
17949         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
17950         return;
17951
17952  nla_put_failure:
17953         nlmsg_free(msg);
17954 }
17955 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
17956
17957 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
17958 {
17959         struct wiphy *wiphy = wdev->wiphy;
17960         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
17961         struct sk_buff *msg;
17962         void *hdr;
17963
17964         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
17965         if (!msg)
17966                 return;
17967
17968         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
17969         if (!hdr)
17970                 goto out;
17971
17972         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
17973             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
17974             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
17975                               NL80211_ATTR_PAD))
17976                 goto out;
17977
17978         genlmsg_end(msg, hdr);
17979
17980         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
17981                                 NL80211_MCGRP_MLME, GFP_KERNEL);
17982         return;
17983  out:
17984         nlmsg_free(msg);
17985 }
17986
17987 int cfg80211_external_auth_request(struct net_device *dev,
17988                                    struct cfg80211_external_auth_params *params,
17989                                    gfp_t gfp)
17990 {
17991         struct wireless_dev *wdev = dev->ieee80211_ptr;
17992         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
17993         struct sk_buff *msg;
17994         void *hdr;
17995
17996         if (!wdev->conn_owner_nlportid)
17997                 return -EINVAL;
17998
17999         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18000         if (!msg)
18001                 return -ENOMEM;
18002
18003         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
18004         if (!hdr)
18005                 goto nla_put_failure;
18006
18007         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18008             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
18009             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
18010             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
18011                         params->action) ||
18012             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
18013             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
18014                     params->ssid.ssid))
18015                 goto nla_put_failure;
18016
18017         genlmsg_end(msg, hdr);
18018         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
18019                         wdev->conn_owner_nlportid);
18020         return 0;
18021
18022  nla_put_failure:
18023         nlmsg_free(msg);
18024         return -ENOBUFS;
18025 }
18026 EXPORT_SYMBOL(cfg80211_external_auth_request);
18027
18028 void cfg80211_update_owe_info_event(struct net_device *netdev,
18029                                     struct cfg80211_update_owe_info *owe_info,
18030                                     gfp_t gfp)
18031 {
18032         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
18033         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
18034         struct sk_buff *msg;
18035         void *hdr;
18036
18037         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
18038
18039         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
18040         if (!msg)
18041                 return;
18042
18043         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
18044         if (!hdr)
18045                 goto nla_put_failure;
18046
18047         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
18048             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
18049             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
18050                 goto nla_put_failure;
18051
18052         if (!owe_info->ie_len ||
18053             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
18054                 goto nla_put_failure;
18055
18056         genlmsg_end(msg, hdr);
18057
18058         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
18059                                 NL80211_MCGRP_MLME, gfp);
18060         return;
18061
18062 nla_put_failure:
18063         genlmsg_cancel(msg, hdr);
18064         nlmsg_free(msg);
18065 }
18066 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
18067
18068 /* initialisation/exit functions */
18069
18070 int __init nl80211_init(void)
18071 {
18072         int err;
18073
18074         err = genl_register_family(&nl80211_fam);
18075         if (err)
18076                 return err;
18077
18078         err = netlink_register_notifier(&nl80211_netlink_notifier);
18079         if (err)
18080                 goto err_out;
18081
18082         return 0;
18083  err_out:
18084         genl_unregister_family(&nl80211_fam);
18085         return err;
18086 }
18087
18088 void nl80211_exit(void)
18089 {
18090         netlink_unregister_notifier(&nl80211_netlink_notifier);
18091         genl_unregister_family(&nl80211_fam);
18092 }