net/wireless/nl80211.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * This is the new netlink-based wireless configuration interface.
   4  *
   5  * Copyright 2006-2010  Johannes Berg <johannes@sipsolutions.net>
   6  * Copyright 2013-2014  Intel Mobile Communications GmbH
   7  * Copyright 2015-2017  Intel Deutschland GmbH
   8  * Copyright (C) 2018-2019 Intel Corporation
   9  */
  10
  11 #include <linux/if.h>
  12 #include <linux/module.h>
  13 #include <linux/err.h>
  14 #include <linux/slab.h>
  15 #include <linux/list.h>
  16 #include <linux/if_ether.h>
  17 #include <linux/ieee80211.h>
  18 #include <linux/nl80211.h>
  19 #include <linux/rtnetlink.h>
  20 #include <linux/netlink.h>
  21 #include <linux/nospec.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/if_vlan.h>
  24 #include <net/net_namespace.h>
  25 #include <net/genetlink.h>
  26 #include <net/cfg80211.h>
  27 #include <net/sock.h>
  28 #include <net/inet_connection_sock.h>
  29 #include "core.h"
  30 #include "nl80211.h"
  31 #include "reg.h"
  32 #include "rdev-ops.h"
  33
  34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
  35                                    struct genl_info *info,
  36                                    struct cfg80211_crypto_settings *settings,
  37                                    int cipher_limit);
  38
  39 /* the netlink family */
  40 static struct genl_family nl80211_fam;
  41
  42 /* multicast groups */
  43 enum nl80211_multicast_groups {
  44         NL80211_MCGRP_CONFIG,
  45         NL80211_MCGRP_SCAN,
  46         NL80211_MCGRP_REGULATORY,
  47         NL80211_MCGRP_MLME,
  48         NL80211_MCGRP_VENDOR,
  49         NL80211_MCGRP_NAN,
  50         NL80211_MCGRP_TESTMODE /* keep last - ifdef! */
  51 };
  52
  53 static const struct genl_multicast_group nl80211_mcgrps[] = {
  54         [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG },
  55         [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN },
  56         [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG },
  57         [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME },
  58         [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR },
  59         [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN },
  60 #ifdef CONFIG_NL80211_TESTMODE
  61         [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE }
  62 #endif
  63 };
  64
  65 /* returns ERR_PTR values */
  66 static struct wireless_dev *
  67 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
  68 {
  69         struct cfg80211_registered_device *rdev;
  70         struct wireless_dev *result = NULL;
  71         bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
  72         bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
  73         u64 wdev_id;
  74         int wiphy_idx = -1;
  75         int ifidx = -1;
  76
  77         ASSERT_RTNL();
  78
  79         if (!have_ifidx && !have_wdev_id)
  80                 return ERR_PTR(-EINVAL);
  81
  82         if (have_ifidx)
  83                 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
  84         if (have_wdev_id) {
  85                 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
  86                 wiphy_idx = wdev_id >> 32;
  87         }
  88
  89         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
  90                 struct wireless_dev *wdev;
  91
  92                 if (wiphy_net(&rdev->wiphy) != netns)
  93                         continue;
  94
  95                 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx)
  96                         continue;
  97
  98                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
  99                         if (have_ifidx && wdev->netdev &&
 100                             wdev->netdev->ifindex == ifidx) {
 101                                 result = wdev;
 102                                 break;
 103                         }
 104                         if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
 105                                 result = wdev;
 106                                 break;
 107                         }
 108                 }
 109
 110                 if (result)
 111                         break;
 112         }
 113
 114         if (result)
 115                 return result;
 116         return ERR_PTR(-ENODEV);
 117 }
 118
 119 static struct cfg80211_registered_device *
 120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs)
 121 {
 122         struct cfg80211_registered_device *rdev = NULL, *tmp;
 123         struct net_device *netdev;
 124
 125         ASSERT_RTNL();
 126
 127         if (!attrs[NL80211_ATTR_WIPHY] &&
 128             !attrs[NL80211_ATTR_IFINDEX] &&
 129             !attrs[NL80211_ATTR_WDEV])
 130                 return ERR_PTR(-EINVAL);
 131
 132         if (attrs[NL80211_ATTR_WIPHY])
 133                 rdev = cfg80211_rdev_by_wiphy_idx(
 134                                 nla_get_u32(attrs[NL80211_ATTR_WIPHY]));
 135
 136         if (attrs[NL80211_ATTR_WDEV]) {
 137                 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]);
 138                 struct wireless_dev *wdev;
 139                 bool found = false;
 140
 141                 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32);
 142                 if (tmp) {
 143                         /* make sure wdev exists */
 144                         list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) {
 145                                 if (wdev->identifier != (u32)wdev_id)
 146                                         continue;
 147                                 found = true;
 148                                 break;
 149                         }
 150
 151                         if (!found)
 152                                 tmp = NULL;
 153
 154                         if (rdev && tmp != rdev)
 155                                 return ERR_PTR(-EINVAL);
 156                         rdev = tmp;
 157                 }
 158         }
 159
 160         if (attrs[NL80211_ATTR_IFINDEX]) {
 161                 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]);
 162
 163                 netdev = __dev_get_by_index(netns, ifindex);
 164                 if (netdev) {
 165                         if (netdev->ieee80211_ptr)
 166                                 tmp = wiphy_to_rdev(
 167                                         netdev->ieee80211_ptr->wiphy);
 168                         else
 169                                 tmp = NULL;
 170
 171                         /* not wireless device -- return error */
 172                         if (!tmp)
 173                                 return ERR_PTR(-EINVAL);
 174
 175                         /* mismatch -- return error */
 176                         if (rdev && tmp != rdev)
 177                                 return ERR_PTR(-EINVAL);
 178
 179                         rdev = tmp;
 180                 }
 181         }
 182
 183         if (!rdev)
 184                 return ERR_PTR(-ENODEV);
 185
 186         if (netns != wiphy_net(&rdev->wiphy))
 187                 return ERR_PTR(-ENODEV);
 188
 189         return rdev;
 190 }
 191
 192 /*
 193  * This function returns a pointer to the driver
 194  * that the genl_info item that is passed refers to.
 195  *
 196  * The result of this can be a PTR_ERR and hence must
 197  * be checked with IS_ERR() for errors.
 198  */
 199 static struct cfg80211_registered_device *
 200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info)
 201 {
 202         return __cfg80211_rdev_from_attrs(netns, info->attrs);
 203 }
 204
 205 static int validate_beacon_head(const struct nlattr *attr,
 206                                 struct netlink_ext_ack *extack)
 207 {
 208         const u8 *data = nla_data(attr);
 209         unsigned int len = nla_len(attr);
 210         const struct element *elem;
 211         const struct ieee80211_mgmt *mgmt = (void *)data;
 212         unsigned int fixedlen = offsetof(struct ieee80211_mgmt,
 213                                          u.beacon.variable);
 214
 215         if (len < fixedlen)
 216                 goto err;
 217
 218         if (ieee80211_hdrlen(mgmt->frame_control) !=
 219             offsetof(struct ieee80211_mgmt, u.beacon))
 220                 goto err;
 221
 222         data += fixedlen;
 223         len -= fixedlen;
 224
 225         for_each_element(elem, data, len) {
 226                 /* nothing */
 227         }
 228
 229         if (for_each_element_completed(elem, data, len))
 230                 return 0;
 231
 232 err:
 233         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head");
 234         return -EINVAL;
 235 }
 236
 237 static int validate_ie_attr(const struct nlattr *attr,
 238                             struct netlink_ext_ack *extack)
 239 {
 240         const u8 *data = nla_data(attr);
 241         unsigned int len = nla_len(attr);
 242         const struct element *elem;
 243
 244         for_each_element(elem, data, len) {
 245                 /* nothing */
 246         }
 247
 248         if (for_each_element_completed(elem, data, len))
 249                 return 0;
 250
 251         NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements");
 252         return -EINVAL;
 253 }
 254
 255 /* policy for the attributes */
 256 static const struct nla_policy
 257 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = {
 258         [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, },
 259         [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY,
 260                                         .len = U8_MAX },
 261         [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY,
 262                                              .len = U8_MAX },
 263 };
 264
 265 static const struct nla_policy
 266 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = {
 267         [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG },
 268         [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 },
 269         [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] =
 270                 NLA_POLICY_MAX(NLA_U8, 15),
 271         [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 },
 272         [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] =
 273                 NLA_POLICY_MAX(NLA_U8, 15),
 274         [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] =
 275                 NLA_POLICY_MAX(NLA_U8, 31),
 276         [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 },
 277         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG },
 278         [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG },
 279 };
 280
 281 static const struct nla_policy
 282 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = {
 283         [NL80211_PMSR_TYPE_FTM] =
 284                 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy),
 285 };
 286
 287 static const struct nla_policy
 288 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = {
 289         [NL80211_PMSR_REQ_ATTR_DATA] =
 290                 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy),
 291         [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG },
 292 };
 293
 294 static const struct nla_policy
 295 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = {
 296         [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR,
 297         /*
 298          * we could specify this again to be the top-level policy,
 299          * but that would open us up to recursion problems ...
 300          */
 301         [NL80211_PMSR_PEER_ATTR_CHAN] = { .type = NLA_NESTED },
 302         [NL80211_PMSR_PEER_ATTR_REQ] =
 303                 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy),
 304         [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT },
 305 };
 306
 307 static const struct nla_policy
 308 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = {
 309         [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT },
 310         [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT },
 311         [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT },
 312         [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT },
 313         [NL80211_PMSR_ATTR_PEERS] =
 314                 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy),
 315 };
 316
 317 static const struct nla_policy
 318 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = {
 319         [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] =
 320                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 321         [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] =
 322                 NLA_POLICY_RANGE(NLA_U8, 1, 20),
 323 };
 324
 325 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
 326         [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD },
 327         [NL80211_ATTR_WIPHY] = { .type = NLA_U32 },
 328         [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING,
 329                                       .len = 20-1 },
 330         [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED },
 331
 332         [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 },
 333         [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 },
 334         [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8,
 335                                                 NL80211_EDMG_CHANNELS_MIN,
 336                                                 NL80211_EDMG_CHANNELS_MAX),
 337         [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8,
 338                                                 NL80211_EDMG_BW_CONFIG_MIN,
 339                                                 NL80211_EDMG_BW_CONFIG_MAX),
 340
 341         [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 },
 342         [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 },
 343         [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 },
 344
 345         [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1),
 346         [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 347         [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 },
 348         [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 },
 349         [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 },
 350         [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG },
 351
 352         [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX),
 353         [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 },
 354         [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 },
 355
 356         [NL80211_ATTR_MAC] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 357         [NL80211_ATTR_PREV_BSSID] = {
 358                 .type = NLA_EXACT_LEN_WARN,
 359                 .len = ETH_ALEN
 360         },
 361
 362         [NL80211_ATTR_KEY] = { .type = NLA_NESTED, },
 363         [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY,
 364                                     .len = WLAN_MAX_KEY_LEN },
 365         [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5),
 366         [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 },
 367         [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG },
 368         [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 369         [NL80211_ATTR_KEY_TYPE] =
 370                 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES),
 371
 372         [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 },
 373         [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 },
 374         [NL80211_ATTR_BEACON_HEAD] =
 375                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head,
 376                                        IEEE80211_MAX_DATA_LEN),
 377         [NL80211_ATTR_BEACON_TAIL] =
 378                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 379                                        IEEE80211_MAX_DATA_LEN),
 380         [NL80211_ATTR_STA_AID] =
 381                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 382         [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED },
 383         [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 },
 384         [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY,
 385                                                .len = NL80211_MAX_SUPP_RATES },
 386         [NL80211_ATTR_STA_PLINK_ACTION] =
 387                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
 388         [NL80211_ATTR_STA_TX_POWER_SETTING] =
 389                 NLA_POLICY_RANGE(NLA_U8,
 390                                  NL80211_TX_POWER_AUTOMATIC,
 391                                  NL80211_TX_POWER_FIXED),
 392         [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
 393         [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
 394         [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
 395         [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
 396                                    .len = IEEE80211_MAX_MESH_ID_LEN },
 397         [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT,
 398
 399         [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 },
 400         [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED },
 401
 402         [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 },
 403         [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 },
 404         [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 },
 405         [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY,
 406                                            .len = NL80211_MAX_SUPP_RATES },
 407         [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 },
 408
 409         [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED },
 410         [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG },
 411
 412         [NL80211_ATTR_HT_CAPABILITY] = {
 413                 .type = NLA_EXACT_LEN_WARN,
 414                 .len = NL80211_HT_CAPABILITY_LEN
 415         },
 416
 417         [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 },
 418         [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY,
 419                                                    validate_ie_attr,
 420                                                    IEEE80211_MAX_DATA_LEN),
 421         [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED },
 422         [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED },
 423
 424         [NL80211_ATTR_SSID] = { .type = NLA_BINARY,
 425                                 .len = IEEE80211_MAX_SSID_LEN },
 426         [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 },
 427         [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 },
 428         [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG },
 429         [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG },
 430         [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32,
 431                                                   NL80211_MFP_NO,
 432                                                   NL80211_MFP_OPTIONAL),
 433         [NL80211_ATTR_STA_FLAGS2] = {
 434                 .len = sizeof(struct nl80211_sta_flag_update),
 435         },
 436         [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG },
 437         [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 },
 438         [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG },
 439         [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG },
 440         [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG },
 441         [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 },
 442         [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 },
 443         [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 },
 444         [NL80211_ATTR_PID] = { .type = NLA_U32 },
 445         [NL80211_ATTR_4ADDR] = { .type = NLA_U8 },
 446         [NL80211_ATTR_PMKID] = {
 447                 .type = NLA_EXACT_LEN_WARN,
 448                 .len = WLAN_PMKID_LEN
 449         },
 450         [NL80211_ATTR_DURATION] = { .type = NLA_U32 },
 451         [NL80211_ATTR_COOKIE] = { .type = NLA_U64 },
 452         [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED },
 453         [NL80211_ATTR_FRAME] = { .type = NLA_BINARY,
 454                                  .len = IEEE80211_MAX_DATA_LEN },
 455         [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, },
 456         [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32,
 457                                                    NL80211_PS_DISABLED,
 458                                                    NL80211_PS_ENABLED),
 459         [NL80211_ATTR_CQM] = { .type = NLA_NESTED, },
 460         [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG },
 461         [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 },
 462         [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 },
 463         [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 },
 464         [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 },
 465         [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 },
 466         [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 },
 467         [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 },
 468         [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG },
 469         [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 470         [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED },
 471         [NL80211_ATTR_STA_PLINK_STATE] =
 472                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1),
 473         [NL80211_ATTR_MESH_PEER_AID] =
 474                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 475         [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 },
 476         [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED },
 477         [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED },
 478         [NL80211_ATTR_HIDDEN_SSID] =
 479                 NLA_POLICY_RANGE(NLA_U32,
 480                                  NL80211_HIDDEN_SSID_NOT_IN_USE,
 481                                  NL80211_HIDDEN_SSID_ZERO_CONTENTS),
 482         [NL80211_ATTR_IE_PROBE_RESP] =
 483                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 484                                        IEEE80211_MAX_DATA_LEN),
 485         [NL80211_ATTR_IE_ASSOC_RESP] =
 486                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
 487                                        IEEE80211_MAX_DATA_LEN),
 488         [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG },
 489         [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED },
 490         [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG },
 491         [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 },
 492         [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 },
 493         [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 },
 494         [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG },
 495         [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG },
 496         [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG },
 497         [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG },
 498         [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY,
 499                                       .len = IEEE80211_MAX_DATA_LEN },
 500         [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 },
 501         [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG },
 502         [NL80211_ATTR_HT_CAPABILITY_MASK] = {
 503                 .len = NL80211_HT_CAPABILITY_LEN
 504         },
 505         [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 },
 506         [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 },
 507         [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 },
 508         [NL80211_ATTR_WDEV] = { .type = NLA_U64 },
 509         [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 },
 510         [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, },
 511         [NL80211_ATTR_VHT_CAPABILITY] = {
 512                 .type = NLA_EXACT_LEN_WARN,
 513                 .len = NL80211_VHT_CAPABILITY_LEN
 514         },
 515         [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 },
 516         [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127),
 517         [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1),
 518         [NL80211_ATTR_LOCAL_MESH_POWER_MODE] =
 519                 NLA_POLICY_RANGE(NLA_U32,
 520                                  NL80211_MESH_POWER_UNKNOWN + 1,
 521                                  NL80211_MESH_POWER_MAX),
 522         [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 },
 523         [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED },
 524         [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 },
 525         [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, },
 526         [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, },
 527         [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG },
 528         [NL80211_ATTR_VHT_CAPABILITY_MASK] = {
 529                 .len = NL80211_VHT_CAPABILITY_LEN,
 530         },
 531         [NL80211_ATTR_MDID] = { .type = NLA_U16 },
 532         [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY,
 533                                   .len = IEEE80211_MAX_DATA_LEN },
 534         [NL80211_ATTR_PEER_AID] =
 535                 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID),
 536         [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 },
 537         [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG },
 538         [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED },
 539         [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY },
 540         [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY },
 541         [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY },
 542         [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY },
 543         [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG },
 544         [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 },
 545         [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 },
 546         [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 },
 547         [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY },
 548         [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY,
 549                                    .len = IEEE80211_QOS_MAP_LEN_MAX },
 550         [NL80211_ATTR_MAC_HINT] = {
 551                 .type = NLA_EXACT_LEN_WARN,
 552                 .len = ETH_ALEN
 553         },
 554         [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 },
 555         [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 },
 556         [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG },
 557         [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY },
 558         [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG },
 559         [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1),
 560         [NL80211_ATTR_USER_PRIO] =
 561                 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1),
 562         [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 },
 563         [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 },
 564         [NL80211_ATTR_MAC_MASK] = {
 565                 .type = NLA_EXACT_LEN_WARN,
 566                 .len = ETH_ALEN
 567         },
 568         [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG },
 569         [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 },
 570         [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 },
 571         [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG },
 572         [NL80211_ATTR_PBSS] = { .type = NLA_FLAG },
 573         [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED },
 574         [NL80211_ATTR_STA_SUPPORT_P2P_PS] =
 575                 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1),
 576         [NL80211_ATTR_MU_MIMO_GROUP_DATA] = {
 577                 .len = VHT_MUMIMO_GROUPS_DATA_LEN
 578         },
 579         [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = {
 580                 .type = NLA_EXACT_LEN_WARN,
 581                 .len = ETH_ALEN
 582         },
 583         [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1),
 584         [NL80211_ATTR_BANDS] = { .type = NLA_U32 },
 585         [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED },
 586         [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY,
 587                                     .len = FILS_MAX_KEK_LEN },
 588         [NL80211_ATTR_FILS_NONCES] = {
 589                 .type = NLA_EXACT_LEN_WARN,
 590                 .len = 2 * FILS_NONCE_LEN
 591         },
 592         [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, },
 593         [NL80211_ATTR_BSSID] = { .type = NLA_EXACT_LEN_WARN, .len = ETH_ALEN },
 594         [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 },
 595         [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = {
 596                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 597         },
 598         [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 },
 599         [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY,
 600                                              .len = FILS_ERP_MAX_USERNAME_LEN },
 601         [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY,
 602                                           .len = FILS_ERP_MAX_REALM_LEN },
 603         [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 },
 604         [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY,
 605                                         .len = FILS_ERP_MAX_RRK_LEN },
 606         [NL80211_ATTR_FILS_CACHE_ID] = { .type = NLA_EXACT_LEN_WARN, .len = 2 },
 607         [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN },
 608         [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG },
 609         [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG },
 610
 611         [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 },
 612         [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 },
 613         [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 },
 614         [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY,
 615                                          .len = NL80211_HE_MAX_CAPABILITY_LEN },
 616
 617         [NL80211_ATTR_FTM_RESPONDER] = {
 618                 .type = NLA_NESTED,
 619                 .validation_data = nl80211_ftm_responder_policy,
 620         },
 621         [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1),
 622         [NL80211_ATTR_PEER_MEASUREMENTS] =
 623                 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy),
 624         [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1),
 625         [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY,
 626                                         .len = SAE_PASSWORD_MAX_LEN },
 627         [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG },
 628         [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy),
 629         [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2),
 630 };
 631
 632 /* policy for the key attributes */
 633 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = {
 634         [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN },
 635         [NL80211_KEY_IDX] = { .type = NLA_U8 },
 636         [NL80211_KEY_CIPHER] = { .type = NLA_U32 },
 637         [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 },
 638         [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG },
 639         [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG },
 640         [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1),
 641         [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED },
 642         [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX),
 643 };
 644
 645 /* policy for the key default flags */
 646 static const struct nla_policy
 647 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = {
 648         [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG },
 649         [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG },
 650 };
 651
 652 #ifdef CONFIG_PM
 653 /* policy for WoWLAN attributes */
 654 static const struct nla_policy
 655 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = {
 656         [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG },
 657         [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG },
 658         [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG },
 659         [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED },
 660         [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG },
 661         [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG },
 662         [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG },
 663         [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG },
 664         [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED },
 665         [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED },
 666 };
 667
 668 static const struct nla_policy
 669 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = {
 670         [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 },
 671         [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 },
 672         [NL80211_WOWLAN_TCP_DST_MAC] = {
 673                 .type = NLA_EXACT_LEN_WARN,
 674                 .len = ETH_ALEN
 675         },
 676         [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 },
 677         [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 },
 678         [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 679         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = {
 680                 .len = sizeof(struct nl80211_wowlan_tcp_data_seq)
 681         },
 682         [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = {
 683                 .len = sizeof(struct nl80211_wowlan_tcp_data_token)
 684         },
 685         [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 },
 686         [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .type = NLA_MIN_LEN, .len = 1 },
 687         [NL80211_WOWLAN_TCP_WAKE_MASK] = { .type = NLA_MIN_LEN, .len = 1 },
 688 };
 689 #endif /* CONFIG_PM */
 690
 691 /* policy for coalesce rule attributes */
 692 static const struct nla_policy
 693 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = {
 694         [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 },
 695         [NL80211_ATTR_COALESCE_RULE_CONDITION] =
 696                 NLA_POLICY_RANGE(NLA_U32,
 697                                  NL80211_COALESCE_CONDITION_MATCH,
 698                                  NL80211_COALESCE_CONDITION_NO_MATCH),
 699         [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED },
 700 };
 701
 702 /* policy for GTK rekey offload attributes */
 703 static const struct nla_policy
 704 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = {
 705         [NL80211_REKEY_DATA_KEK] = {
 706                 .type = NLA_EXACT_LEN_WARN,
 707                 .len = NL80211_KEK_LEN,
 708         },
 709         [NL80211_REKEY_DATA_KCK] = {
 710                 .type = NLA_EXACT_LEN_WARN,
 711                 .len = NL80211_KCK_LEN,
 712         },
 713         [NL80211_REKEY_DATA_REPLAY_CTR] = {
 714                 .type = NLA_EXACT_LEN_WARN,
 715                 .len = NL80211_REPLAY_CTR_LEN
 716         },
 717 };
 718
 719 static const struct nla_policy
 720 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = {
 721         [NL80211_BAND_2GHZ] = { .type = NLA_S32 },
 722         [NL80211_BAND_5GHZ] = { .type = NLA_S32 },
 723         [NL80211_BAND_6GHZ] = { .type = NLA_S32 },
 724         [NL80211_BAND_60GHZ] = { .type = NLA_S32 },
 725 };
 726
 727 static const struct nla_policy
 728 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = {
 729         [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY,
 730                                                  .len = IEEE80211_MAX_SSID_LEN },
 731         [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = {
 732                 .type = NLA_EXACT_LEN_WARN,
 733                 .len = ETH_ALEN
 734         },
 735         [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 },
 736         [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] =
 737                 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy),
 738 };
 739
 740 static const struct nla_policy
 741 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = {
 742         [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 },
 743         [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 },
 744 };
 745
 746 static const struct nla_policy
 747 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = {
 748         [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG },
 749         [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 },
 750         [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = {
 751                 .len = sizeof(struct nl80211_bss_select_rssi_adjust)
 752         },
 753 };
 754
 755 /* policy for NAN function attributes */
 756 static const struct nla_policy
 757 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = {
 758         [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 },
 759         [NL80211_NAN_FUNC_SERVICE_ID] = {
 760                                     .len = NL80211_NAN_FUNC_SERVICE_ID_LEN },
 761         [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 },
 762         [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG },
 763         [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG },
 764         [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 },
 765         [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 },
 766         [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = {
 767                 .type = NLA_EXACT_LEN_WARN,
 768                 .len = ETH_ALEN
 769         },
 770         [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG },
 771         [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 },
 772         [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY,
 773                         .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN },
 774         [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED },
 775         [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED },
 776         [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED },
 777         [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 },
 778         [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 },
 779 };
 780
 781 /* policy for Service Response Filter attributes */
 782 static const struct nla_policy
 783 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = {
 784         [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG },
 785         [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY,
 786                                  .len =  NL80211_NAN_FUNC_SRF_MAX_LEN },
 787         [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 },
 788         [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED },
 789 };
 790
 791 /* policy for packet pattern attributes */
 792 static const struct nla_policy
 793 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = {
 794         [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, },
 795         [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, },
 796         [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 },
 797 };
 798
 799 int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
 800                               struct cfg80211_registered_device **rdev,
 801                               struct wireless_dev **wdev)
 802 {
 803         int err;
 804
 805         if (!cb->args[0]) {
 806                 struct nlattr **attrbuf;
 807
 808                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
 809                                   GFP_KERNEL);
 810                 if (!attrbuf)
 811                         return -ENOMEM;
 812
 813                 err = nlmsg_parse_deprecated(cb->nlh,
 814                                              GENL_HDRLEN + nl80211_fam.hdrsize,
 815                                              attrbuf, nl80211_fam.maxattr,
 816                                              nl80211_policy, NULL);
 817                 if (err) {
 818                         kfree(attrbuf);
 819                         return err;
 820                 }
 821
 822                 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
 823                                                    attrbuf);
 824                 kfree(attrbuf);
 825                 if (IS_ERR(*wdev))
 826                         return PTR_ERR(*wdev);
 827                 *rdev = wiphy_to_rdev((*wdev)->wiphy);
 828                 /* 0 is the first index - add 1 to parse only once */
 829                 cb->args[0] = (*rdev)->wiphy_idx + 1;
 830                 cb->args[1] = (*wdev)->identifier;
 831         } else {
 832                 /* subtract the 1 again here */
 833                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
 834                 struct wireless_dev *tmp;
 835
 836                 if (!wiphy)
 837                         return -ENODEV;
 838                 *rdev = wiphy_to_rdev(wiphy);
 839                 *wdev = NULL;
 840
 841                 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) {
 842                         if (tmp->identifier == cb->args[1]) {
 843                                 *wdev = tmp;
 844                                 break;
 845                         }
 846                 }
 847
 848                 if (!*wdev)
 849                         return -ENODEV;
 850         }
 851
 852         return 0;
 853 }
 854
 855 /* message building helper */
 856 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq,
 857                      int flags, u8 cmd)
 858 {
 859         /* since there is no private header just add the generic one */
 860         return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd);
 861 }
 862
 863 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg,
 864                                      const struct ieee80211_reg_rule *rule)
 865 {
 866         int j;
 867         struct nlattr *nl_wmm_rules =
 868                 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM);
 869
 870         if (!nl_wmm_rules)
 871                 goto nla_put_failure;
 872
 873         for (j = 0; j < IEEE80211_NUM_ACS; j++) {
 874                 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j);
 875
 876                 if (!nl_wmm_rule)
 877                         goto nla_put_failure;
 878
 879                 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN,
 880                                 rule->wmm_rule.client[j].cw_min) ||
 881                     nla_put_u16(msg, NL80211_WMMR_CW_MAX,
 882                                 rule->wmm_rule.client[j].cw_max) ||
 883                     nla_put_u8(msg, NL80211_WMMR_AIFSN,
 884                                rule->wmm_rule.client[j].aifsn) ||
 885                     nla_put_u16(msg, NL80211_WMMR_TXOP,
 886                                 rule->wmm_rule.client[j].cot))
 887                         goto nla_put_failure;
 888
 889                 nla_nest_end(msg, nl_wmm_rule);
 890         }
 891         nla_nest_end(msg, nl_wmm_rules);
 892
 893         return 0;
 894
 895 nla_put_failure:
 896         return -ENOBUFS;
 897 }
 898
 899 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy,
 900                                    struct ieee80211_channel *chan,
 901                                    bool large)
 902 {
 903         /* Some channels must be completely excluded from the
 904          * list to protect old user-space tools from breaking
 905          */
 906         if (!large && chan->flags &
 907             (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ))
 908                 return 0;
 909
 910         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ,
 911                         chan->center_freq))
 912                 goto nla_put_failure;
 913
 914         if ((chan->flags & IEEE80211_CHAN_DISABLED) &&
 915             nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED))
 916                 goto nla_put_failure;
 917         if (chan->flags & IEEE80211_CHAN_NO_IR) {
 918                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR))
 919                         goto nla_put_failure;
 920                 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS))
 921                         goto nla_put_failure;
 922         }
 923         if (chan->flags & IEEE80211_CHAN_RADAR) {
 924                 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR))
 925                         goto nla_put_failure;
 926                 if (large) {
 927                         u32 time;
 928
 929                         time = elapsed_jiffies_msecs(chan->dfs_state_entered);
 930
 931                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE,
 932                                         chan->dfs_state))
 933                                 goto nla_put_failure;
 934                         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME,
 935                                         time))
 936                                 goto nla_put_failure;
 937                         if (nla_put_u32(msg,
 938                                         NL80211_FREQUENCY_ATTR_DFS_CAC_TIME,
 939                                         chan->dfs_cac_ms))
 940                                 goto nla_put_failure;
 941                 }
 942         }
 943
 944         if (large) {
 945                 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) &&
 946                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS))
 947                         goto nla_put_failure;
 948                 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) &&
 949                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS))
 950                         goto nla_put_failure;
 951                 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) &&
 952                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ))
 953                         goto nla_put_failure;
 954                 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) &&
 955                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ))
 956                         goto nla_put_failure;
 957                 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) &&
 958                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY))
 959                         goto nla_put_failure;
 960                 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) &&
 961                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT))
 962                         goto nla_put_failure;
 963                 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) &&
 964                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ))
 965                         goto nla_put_failure;
 966                 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) &&
 967                     nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ))
 968                         goto nla_put_failure;
 969         }
 970
 971         if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
 972                         DBM_TO_MBM(chan->max_power)))
 973                 goto nla_put_failure;
 974
 975         if (large) {
 976                 const struct ieee80211_reg_rule *rule =
 977                         freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq));
 978
 979                 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) {
 980                         if (nl80211_msg_put_wmm_rules(msg, rule))
 981                                 goto nla_put_failure;
 982                 }
 983         }
 984
 985         return 0;
 986
 987  nla_put_failure:
 988         return -ENOBUFS;
 989 }
 990
 991 static bool nl80211_put_txq_stats(struct sk_buff *msg,
 992                                   struct cfg80211_txq_stats *txqstats,
 993                                   int attrtype)
 994 {
 995         struct nlattr *txqattr;
 996
 997 #define PUT_TXQVAL_U32(attr, memb) do {                                   \
 998         if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) &&         \
 999             nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \
1000                 return false;                                             \
1001         } while (0)
1002
1003         txqattr = nla_nest_start_noflag(msg, attrtype);
1004         if (!txqattr)
1005                 return false;
1006
1007         PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes);
1008         PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets);
1009         PUT_TXQVAL_U32(FLOWS, flows);
1010         PUT_TXQVAL_U32(DROPS, drops);
1011         PUT_TXQVAL_U32(ECN_MARKS, ecn_marks);
1012         PUT_TXQVAL_U32(OVERLIMIT, overlimit);
1013         PUT_TXQVAL_U32(OVERMEMORY, overmemory);
1014         PUT_TXQVAL_U32(COLLISIONS, collisions);
1015         PUT_TXQVAL_U32(TX_BYTES, tx_bytes);
1016         PUT_TXQVAL_U32(TX_PACKETS, tx_packets);
1017         PUT_TXQVAL_U32(MAX_FLOWS, max_flows);
1018         nla_nest_end(msg, txqattr);
1019
1020 #undef PUT_TXQVAL_U32
1021         return true;
1022 }
1023
1024 /* netlink command implementations */
1025
1026 struct key_parse {
1027         struct key_params p;
1028         int idx;
1029         int type;
1030         bool def, defmgmt;
1031         bool def_uni, def_multi;
1032 };
1033
1034 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key,
1035                                  struct key_parse *k)
1036 {
1037         struct nlattr *tb[NL80211_KEY_MAX + 1];
1038         int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key,
1039                                               nl80211_key_policy,
1040                                               info->extack);
1041         if (err)
1042                 return err;
1043
1044         k->def = !!tb[NL80211_KEY_DEFAULT];
1045         k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT];
1046
1047         if (k->def) {
1048                 k->def_uni = true;
1049                 k->def_multi = true;
1050         }
1051         if (k->defmgmt)
1052                 k->def_multi = true;
1053
1054         if (tb[NL80211_KEY_IDX])
1055                 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]);
1056
1057         if (tb[NL80211_KEY_DATA]) {
1058                 k->p.key = nla_data(tb[NL80211_KEY_DATA]);
1059                 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]);
1060         }
1061
1062         if (tb[NL80211_KEY_SEQ]) {
1063                 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]);
1064                 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]);
1065         }
1066
1067         if (tb[NL80211_KEY_CIPHER])
1068                 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]);
1069
1070         if (tb[NL80211_KEY_TYPE])
1071                 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]);
1072
1073         if (tb[NL80211_KEY_DEFAULT_TYPES]) {
1074                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1075
1076                 err = nla_parse_nested_deprecated(kdt,
1077                                                   NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1078                                                   tb[NL80211_KEY_DEFAULT_TYPES],
1079                                                   nl80211_key_default_policy,
1080                                                   info->extack);
1081                 if (err)
1082                         return err;
1083
1084                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1085                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1086         }
1087
1088         if (tb[NL80211_KEY_MODE])
1089                 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]);
1090
1091         return 0;
1092 }
1093
1094 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k)
1095 {
1096         if (info->attrs[NL80211_ATTR_KEY_DATA]) {
1097                 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]);
1098                 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]);
1099         }
1100
1101         if (info->attrs[NL80211_ATTR_KEY_SEQ]) {
1102                 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]);
1103                 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]);
1104         }
1105
1106         if (info->attrs[NL80211_ATTR_KEY_IDX])
1107                 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
1108
1109         if (info->attrs[NL80211_ATTR_KEY_CIPHER])
1110                 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]);
1111
1112         k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT];
1113         k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT];
1114
1115         if (k->def) {
1116                 k->def_uni = true;
1117                 k->def_multi = true;
1118         }
1119         if (k->defmgmt)
1120                 k->def_multi = true;
1121
1122         if (info->attrs[NL80211_ATTR_KEY_TYPE])
1123                 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
1124
1125         if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) {
1126                 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES];
1127                 int err = nla_parse_nested_deprecated(kdt,
1128                                                       NUM_NL80211_KEY_DEFAULT_TYPES - 1,
1129                                                       info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES],
1130                                                       nl80211_key_default_policy,
1131                                                       info->extack);
1132                 if (err)
1133                         return err;
1134
1135                 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST];
1136                 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST];
1137         }
1138
1139         return 0;
1140 }
1141
1142 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k)
1143 {
1144         int err;
1145
1146         memset(k, 0, sizeof(*k));
1147         k->idx = -1;
1148         k->type = -1;
1149
1150         if (info->attrs[NL80211_ATTR_KEY])
1151                 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k);
1152         else
1153                 err = nl80211_parse_key_old(info, k);
1154
1155         if (err)
1156                 return err;
1157
1158         if (k->def && k->defmgmt) {
1159                 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid");
1160                 return -EINVAL;
1161         }
1162
1163         if (k->defmgmt) {
1164                 if (k->def_uni || !k->def_multi) {
1165                         GENL_SET_ERR_MSG(info, "defmgmt key must be mcast");
1166                         return -EINVAL;
1167                 }
1168         }
1169
1170         if (k->idx != -1) {
1171                 if (k->defmgmt) {
1172                         if (k->idx < 4 || k->idx > 5) {
1173                                 GENL_SET_ERR_MSG(info,
1174                                                  "defmgmt key idx not 4 or 5");
1175                                 return -EINVAL;
1176                         }
1177                 } else if (k->def) {
1178                         if (k->idx < 0 || k->idx > 3) {
1179                                 GENL_SET_ERR_MSG(info, "def key idx not 0-3");
1180                                 return -EINVAL;
1181                         }
1182                 } else {
1183                         if (k->idx < 0 || k->idx > 5) {
1184                                 GENL_SET_ERR_MSG(info, "key idx not 0-5");
1185                                 return -EINVAL;
1186                         }
1187                 }
1188         }
1189
1190         return 0;
1191 }
1192
1193 static struct cfg80211_cached_keys *
1194 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev,
1195                        struct genl_info *info, bool *no_ht)
1196 {
1197         struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS];
1198         struct key_parse parse;
1199         struct nlattr *key;
1200         struct cfg80211_cached_keys *result;
1201         int rem, err, def = 0;
1202         bool have_key = false;
1203
1204         nla_for_each_nested(key, keys, rem) {
1205                 have_key = true;
1206                 break;
1207         }
1208
1209         if (!have_key)
1210                 return NULL;
1211
1212         result = kzalloc(sizeof(*result), GFP_KERNEL);
1213         if (!result)
1214                 return ERR_PTR(-ENOMEM);
1215
1216         result->def = -1;
1217
1218         nla_for_each_nested(key, keys, rem) {
1219                 memset(&parse, 0, sizeof(parse));
1220                 parse.idx = -1;
1221
1222                 err = nl80211_parse_key_new(info, key, &parse);
1223                 if (err)
1224                         goto error;
1225                 err = -EINVAL;
1226                 if (!parse.p.key)
1227                         goto error;
1228                 if (parse.idx < 0 || parse.idx > 3) {
1229                         GENL_SET_ERR_MSG(info, "key index out of range [0-3]");
1230                         goto error;
1231                 }
1232                 if (parse.def) {
1233                         if (def) {
1234                                 GENL_SET_ERR_MSG(info,
1235                                                  "only one key can be default");
1236                                 goto error;
1237                         }
1238                         def = 1;
1239                         result->def = parse.idx;
1240                         if (!parse.def_uni || !parse.def_multi)
1241                                 goto error;
1242                 } else if (parse.defmgmt)
1243                         goto error;
1244                 err = cfg80211_validate_key_settings(rdev, &parse.p,
1245                                                      parse.idx, false, NULL);
1246                 if (err)
1247                         goto error;
1248                 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 &&
1249                     parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) {
1250                         GENL_SET_ERR_MSG(info, "connect key must be WEP");
1251                         err = -EINVAL;
1252                         goto error;
1253                 }
1254                 result->params[parse.idx].cipher = parse.p.cipher;
1255                 result->params[parse.idx].key_len = parse.p.key_len;
1256                 result->params[parse.idx].key = result->data[parse.idx];
1257                 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len);
1258
1259                 /* must be WEP key if we got here */
1260                 if (no_ht)
1261                         *no_ht = true;
1262         }
1263
1264         if (result->def < 0) {
1265                 err = -EINVAL;
1266                 GENL_SET_ERR_MSG(info, "need a default/TX key");
1267                 goto error;
1268         }
1269
1270         return result;
1271  error:
1272         kfree(result);
1273         return ERR_PTR(err);
1274 }
1275
1276 static int nl80211_key_allowed(struct wireless_dev *wdev)
1277 {
1278         ASSERT_WDEV_LOCK(wdev);
1279
1280         switch (wdev->iftype) {
1281         case NL80211_IFTYPE_AP:
1282         case NL80211_IFTYPE_AP_VLAN:
1283         case NL80211_IFTYPE_P2P_GO:
1284         case NL80211_IFTYPE_MESH_POINT:
1285                 break;
1286         case NL80211_IFTYPE_ADHOC:
1287         case NL80211_IFTYPE_STATION:
1288         case NL80211_IFTYPE_P2P_CLIENT:
1289                 if (!wdev->current_bss)
1290                         return -ENOLINK;
1291                 break;
1292         case NL80211_IFTYPE_UNSPECIFIED:
1293         case NL80211_IFTYPE_OCB:
1294         case NL80211_IFTYPE_MONITOR:
1295         case NL80211_IFTYPE_NAN:
1296         case NL80211_IFTYPE_P2P_DEVICE:
1297         case NL80211_IFTYPE_WDS:
1298         case NUM_NL80211_IFTYPES:
1299                 return -EINVAL;
1300         }
1301
1302         return 0;
1303 }
1304
1305 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy,
1306                                                         struct nlattr *tb)
1307 {
1308         struct ieee80211_channel *chan;
1309
1310         if (tb == NULL)
1311                 return NULL;
1312         chan = ieee80211_get_channel(wiphy, nla_get_u32(tb));
1313         if (!chan || chan->flags & IEEE80211_CHAN_DISABLED)
1314                 return NULL;
1315         return chan;
1316 }
1317
1318 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes)
1319 {
1320         struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr);
1321         int i;
1322
1323         if (!nl_modes)
1324                 goto nla_put_failure;
1325
1326         i = 0;
1327         while (ifmodes) {
1328                 if ((ifmodes & 1) && nla_put_flag(msg, i))
1329                         goto nla_put_failure;
1330                 ifmodes >>= 1;
1331                 i++;
1332         }
1333
1334         nla_nest_end(msg, nl_modes);
1335         return 0;
1336
1337 nla_put_failure:
1338         return -ENOBUFS;
1339 }
1340
1341 static int nl80211_put_iface_combinations(struct wiphy *wiphy,
1342                                           struct sk_buff *msg,
1343                                           bool large)
1344 {
1345         struct nlattr *nl_combis;
1346         int i, j;
1347
1348         nl_combis = nla_nest_start_noflag(msg,
1349                                           NL80211_ATTR_INTERFACE_COMBINATIONS);
1350         if (!nl_combis)
1351                 goto nla_put_failure;
1352
1353         for (i = 0; i < wiphy->n_iface_combinations; i++) {
1354                 const struct ieee80211_iface_combination *c;
1355                 struct nlattr *nl_combi, *nl_limits;
1356
1357                 c = &wiphy->iface_combinations[i];
1358
1359                 nl_combi = nla_nest_start_noflag(msg, i + 1);
1360                 if (!nl_combi)
1361                         goto nla_put_failure;
1362
1363                 nl_limits = nla_nest_start_noflag(msg,
1364                                                   NL80211_IFACE_COMB_LIMITS);
1365                 if (!nl_limits)
1366                         goto nla_put_failure;
1367
1368                 for (j = 0; j < c->n_limits; j++) {
1369                         struct nlattr *nl_limit;
1370
1371                         nl_limit = nla_nest_start_noflag(msg, j + 1);
1372                         if (!nl_limit)
1373                                 goto nla_put_failure;
1374                         if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX,
1375                                         c->limits[j].max))
1376                                 goto nla_put_failure;
1377                         if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES,
1378                                                 c->limits[j].types))
1379                                 goto nla_put_failure;
1380                         nla_nest_end(msg, nl_limit);
1381                 }
1382
1383                 nla_nest_end(msg, nl_limits);
1384
1385                 if (c->beacon_int_infra_match &&
1386                     nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH))
1387                         goto nla_put_failure;
1388                 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS,
1389                                 c->num_different_channels) ||
1390                     nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM,
1391                                 c->max_interfaces))
1392                         goto nla_put_failure;
1393                 if (large &&
1394                     (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS,
1395                                 c->radar_detect_widths) ||
1396                      nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS,
1397                                 c->radar_detect_regions)))
1398                         goto nla_put_failure;
1399                 if (c->beacon_int_min_gcd &&
1400                     nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD,
1401                                 c->beacon_int_min_gcd))
1402                         goto nla_put_failure;
1403
1404                 nla_nest_end(msg, nl_combi);
1405         }
1406
1407         nla_nest_end(msg, nl_combis);
1408
1409         return 0;
1410 nla_put_failure:
1411         return -ENOBUFS;
1412 }
1413
1414 #ifdef CONFIG_PM
1415 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev,
1416                                         struct sk_buff *msg)
1417 {
1418         const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp;
1419         struct nlattr *nl_tcp;
1420
1421         if (!tcp)
1422                 return 0;
1423
1424         nl_tcp = nla_nest_start_noflag(msg,
1425                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
1426         if (!nl_tcp)
1427                 return -ENOBUFS;
1428
1429         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1430                         tcp->data_payload_max))
1431                 return -ENOBUFS;
1432
1433         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
1434                         tcp->data_payload_max))
1435                 return -ENOBUFS;
1436
1437         if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ))
1438                 return -ENOBUFS;
1439
1440         if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
1441                                 sizeof(*tcp->tok), tcp->tok))
1442                 return -ENOBUFS;
1443
1444         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
1445                         tcp->data_interval_max))
1446                 return -ENOBUFS;
1447
1448         if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
1449                         tcp->wake_payload_max))
1450                 return -ENOBUFS;
1451
1452         nla_nest_end(msg, nl_tcp);
1453         return 0;
1454 }
1455
1456 static int nl80211_send_wowlan(struct sk_buff *msg,
1457                                struct cfg80211_registered_device *rdev,
1458                                bool large)
1459 {
1460         struct nlattr *nl_wowlan;
1461
1462         if (!rdev->wiphy.wowlan)
1463                 return 0;
1464
1465         nl_wowlan = nla_nest_start_noflag(msg,
1466                                           NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED);
1467         if (!nl_wowlan)
1468                 return -ENOBUFS;
1469
1470         if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) &&
1471              nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
1472             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) &&
1473              nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
1474             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) &&
1475              nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
1476             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) &&
1477              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) ||
1478             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
1479              nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
1480             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) &&
1481              nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
1482             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) &&
1483              nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
1484             ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) &&
1485              nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
1486                 return -ENOBUFS;
1487
1488         if (rdev->wiphy.wowlan->n_patterns) {
1489                 struct nl80211_pattern_support pat = {
1490                         .max_patterns = rdev->wiphy.wowlan->n_patterns,
1491                         .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len,
1492                         .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len,
1493                         .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset,
1494                 };
1495
1496                 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
1497                             sizeof(pat), &pat))
1498                         return -ENOBUFS;
1499         }
1500
1501         if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) &&
1502             nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT,
1503                         rdev->wiphy.wowlan->max_nd_match_sets))
1504                 return -ENOBUFS;
1505
1506         if (large && nl80211_send_wowlan_tcp_caps(rdev, msg))
1507                 return -ENOBUFS;
1508
1509         nla_nest_end(msg, nl_wowlan);
1510
1511         return 0;
1512 }
1513 #endif
1514
1515 static int nl80211_send_coalesce(struct sk_buff *msg,
1516                                  struct cfg80211_registered_device *rdev)
1517 {
1518         struct nl80211_coalesce_rule_support rule;
1519
1520         if (!rdev->wiphy.coalesce)
1521                 return 0;
1522
1523         rule.max_rules = rdev->wiphy.coalesce->n_rules;
1524         rule.max_delay = rdev->wiphy.coalesce->max_delay;
1525         rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns;
1526         rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len;
1527         rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len;
1528         rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset;
1529
1530         if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule))
1531                 return -ENOBUFS;
1532
1533         return 0;
1534 }
1535
1536 static int
1537 nl80211_send_iftype_data(struct sk_buff *msg,
1538                          const struct ieee80211_sband_iftype_data *iftdata)
1539 {
1540         const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap;
1541
1542         if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES,
1543                                 iftdata->types_mask))
1544                 return -ENOBUFS;
1545
1546         if (he_cap->has_he) {
1547                 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC,
1548                             sizeof(he_cap->he_cap_elem.mac_cap_info),
1549                             he_cap->he_cap_elem.mac_cap_info) ||
1550                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY,
1551                             sizeof(he_cap->he_cap_elem.phy_cap_info),
1552                             he_cap->he_cap_elem.phy_cap_info) ||
1553                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET,
1554                             sizeof(he_cap->he_mcs_nss_supp),
1555                             &he_cap->he_mcs_nss_supp) ||
1556                     nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE,
1557                             sizeof(he_cap->ppe_thres), he_cap->ppe_thres))
1558                         return -ENOBUFS;
1559         }
1560
1561         return 0;
1562 }
1563
1564 static int nl80211_send_band_rateinfo(struct sk_buff *msg,
1565                                       struct ieee80211_supported_band *sband)
1566 {
1567         struct nlattr *nl_rates, *nl_rate;
1568         struct ieee80211_rate *rate;
1569         int i;
1570
1571         /* add HT info */
1572         if (sband->ht_cap.ht_supported &&
1573             (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET,
1574                      sizeof(sband->ht_cap.mcs),
1575                      &sband->ht_cap.mcs) ||
1576              nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA,
1577                          sband->ht_cap.cap) ||
1578              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
1579                         sband->ht_cap.ampdu_factor) ||
1580              nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
1581                         sband->ht_cap.ampdu_density)))
1582                 return -ENOBUFS;
1583
1584         /* add VHT info */
1585         if (sband->vht_cap.vht_supported &&
1586             (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
1587                      sizeof(sband->vht_cap.vht_mcs),
1588                      &sband->vht_cap.vht_mcs) ||
1589              nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
1590                          sband->vht_cap.cap)))
1591                 return -ENOBUFS;
1592
1593         if (sband->n_iftype_data) {
1594                 struct nlattr *nl_iftype_data =
1595                         nla_nest_start_noflag(msg,
1596                                               NL80211_BAND_ATTR_IFTYPE_DATA);
1597                 int err;
1598
1599                 if (!nl_iftype_data)
1600                         return -ENOBUFS;
1601
1602                 for (i = 0; i < sband->n_iftype_data; i++) {
1603                         struct nlattr *iftdata;
1604
1605                         iftdata = nla_nest_start_noflag(msg, i + 1);
1606                         if (!iftdata)
1607                                 return -ENOBUFS;
1608
1609                         err = nl80211_send_iftype_data(msg,
1610                                                        &sband->iftype_data[i]);
1611                         if (err)
1612                                 return err;
1613
1614                         nla_nest_end(msg, iftdata);
1615                 }
1616
1617                 nla_nest_end(msg, nl_iftype_data);
1618         }
1619
1620         /* add EDMG info */
1621         if (sband->edmg_cap.channels &&
1622             (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS,
1623                        sband->edmg_cap.channels) ||
1624             nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG,
1625                        sband->edmg_cap.bw_config)))
1626
1627                 return -ENOBUFS;
1628
1629         /* add bitrates */
1630         nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES);
1631         if (!nl_rates)
1632                 return -ENOBUFS;
1633
1634         for (i = 0; i < sband->n_bitrates; i++) {
1635                 nl_rate = nla_nest_start_noflag(msg, i);
1636                 if (!nl_rate)
1637                         return -ENOBUFS;
1638
1639                 rate = &sband->bitrates[i];
1640                 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE,
1641                                 rate->bitrate))
1642                         return -ENOBUFS;
1643                 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) &&
1644                     nla_put_flag(msg,
1645                                  NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE))
1646                         return -ENOBUFS;
1647
1648                 nla_nest_end(msg, nl_rate);
1649         }
1650
1651         nla_nest_end(msg, nl_rates);
1652
1653         return 0;
1654 }
1655
1656 static int
1657 nl80211_send_mgmt_stypes(struct sk_buff *msg,
1658                          const struct ieee80211_txrx_stypes *mgmt_stypes)
1659 {
1660         u16 stypes;
1661         struct nlattr *nl_ftypes, *nl_ifs;
1662         enum nl80211_iftype ift;
1663         int i;
1664
1665         if (!mgmt_stypes)
1666                 return 0;
1667
1668         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES);
1669         if (!nl_ifs)
1670                 return -ENOBUFS;
1671
1672         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1673                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1674                 if (!nl_ftypes)
1675                         return -ENOBUFS;
1676                 i = 0;
1677                 stypes = mgmt_stypes[ift].tx;
1678                 while (stypes) {
1679                         if ((stypes & 1) &&
1680                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1681                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1682                                 return -ENOBUFS;
1683                         stypes >>= 1;
1684                         i++;
1685                 }
1686                 nla_nest_end(msg, nl_ftypes);
1687         }
1688
1689         nla_nest_end(msg, nl_ifs);
1690
1691         nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES);
1692         if (!nl_ifs)
1693                 return -ENOBUFS;
1694
1695         for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) {
1696                 nl_ftypes = nla_nest_start_noflag(msg, ift);
1697                 if (!nl_ftypes)
1698                         return -ENOBUFS;
1699                 i = 0;
1700                 stypes = mgmt_stypes[ift].rx;
1701                 while (stypes) {
1702                         if ((stypes & 1) &&
1703                             nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE,
1704                                         (i << 4) | IEEE80211_FTYPE_MGMT))
1705                                 return -ENOBUFS;
1706                         stypes >>= 1;
1707                         i++;
1708                 }
1709                 nla_nest_end(msg, nl_ftypes);
1710         }
1711         nla_nest_end(msg, nl_ifs);
1712
1713         return 0;
1714 }
1715
1716 #define CMD(op, n)                                                      \
1717          do {                                                           \
1718                 if (rdev->ops->op) {                                    \
1719                         i++;                                            \
1720                         if (nla_put_u32(msg, i, NL80211_CMD_ ## n))     \
1721                                 goto nla_put_failure;                   \
1722                 }                                                       \
1723         } while (0)
1724
1725 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev,
1726                                         struct sk_buff *msg)
1727 {
1728         int i = 0;
1729
1730         /*
1731          * do *NOT* add anything into this function, new things need to be
1732          * advertised only to new versions of userspace that can deal with
1733          * the split (and they can't possibly care about new features...
1734          */
1735         CMD(add_virtual_intf, NEW_INTERFACE);
1736         CMD(change_virtual_intf, SET_INTERFACE);
1737         CMD(add_key, NEW_KEY);
1738         CMD(start_ap, START_AP);
1739         CMD(add_station, NEW_STATION);
1740         CMD(add_mpath, NEW_MPATH);
1741         CMD(update_mesh_config, SET_MESH_CONFIG);
1742         CMD(change_bss, SET_BSS);
1743         CMD(auth, AUTHENTICATE);
1744         CMD(assoc, ASSOCIATE);
1745         CMD(deauth, DEAUTHENTICATE);
1746         CMD(disassoc, DISASSOCIATE);
1747         CMD(join_ibss, JOIN_IBSS);
1748         CMD(join_mesh, JOIN_MESH);
1749         CMD(set_pmksa, SET_PMKSA);
1750         CMD(del_pmksa, DEL_PMKSA);
1751         CMD(flush_pmksa, FLUSH_PMKSA);
1752         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)
1753                 CMD(remain_on_channel, REMAIN_ON_CHANNEL);
1754         CMD(set_bitrate_mask, SET_TX_BITRATE_MASK);
1755         CMD(mgmt_tx, FRAME);
1756         CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL);
1757         if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) {
1758                 i++;
1759                 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS))
1760                         goto nla_put_failure;
1761         }
1762         if (rdev->ops->set_monitor_channel || rdev->ops->start_ap ||
1763             rdev->ops->join_mesh) {
1764                 i++;
1765                 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL))
1766                         goto nla_put_failure;
1767         }
1768         CMD(set_wds_peer, SET_WDS_PEER);
1769         if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) {
1770                 CMD(tdls_mgmt, TDLS_MGMT);
1771                 CMD(tdls_oper, TDLS_OPER);
1772         }
1773         if (rdev->wiphy.max_sched_scan_reqs)
1774                 CMD(sched_scan_start, START_SCHED_SCAN);
1775         CMD(probe_client, PROBE_CLIENT);
1776         CMD(set_noack_map, SET_NOACK_MAP);
1777         if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) {
1778                 i++;
1779                 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS))
1780                         goto nla_put_failure;
1781         }
1782         CMD(start_p2p_device, START_P2P_DEVICE);
1783         CMD(set_mcast_rate, SET_MCAST_RATE);
1784 #ifdef CONFIG_NL80211_TESTMODE
1785         CMD(testmode_cmd, TESTMODE);
1786 #endif
1787
1788         if (rdev->ops->connect || rdev->ops->auth) {
1789                 i++;
1790                 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT))
1791                         goto nla_put_failure;
1792         }
1793
1794         if (rdev->ops->disconnect || rdev->ops->deauth) {
1795                 i++;
1796                 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT))
1797                         goto nla_put_failure;
1798         }
1799
1800         return i;
1801  nla_put_failure:
1802         return -ENOBUFS;
1803 }
1804
1805 static int
1806 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap,
1807                            struct sk_buff *msg)
1808 {
1809         struct nlattr *ftm;
1810
1811         if (!cap->ftm.supported)
1812                 return 0;
1813
1814         ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM);
1815         if (!ftm)
1816                 return -ENOBUFS;
1817
1818         if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP))
1819                 return -ENOBUFS;
1820         if (cap->ftm.non_asap &&
1821             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP))
1822                 return -ENOBUFS;
1823         if (cap->ftm.request_lci &&
1824             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI))
1825                 return -ENOBUFS;
1826         if (cap->ftm.request_civicloc &&
1827             nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC))
1828                 return -ENOBUFS;
1829         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES,
1830                         cap->ftm.preambles))
1831                 return -ENOBUFS;
1832         if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS,
1833                         cap->ftm.bandwidths))
1834                 return -ENOBUFS;
1835         if (cap->ftm.max_bursts_exponent >= 0 &&
1836             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT,
1837                         cap->ftm.max_bursts_exponent))
1838                 return -ENOBUFS;
1839         if (cap->ftm.max_ftms_per_burst &&
1840             nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST,
1841                         cap->ftm.max_ftms_per_burst))
1842                 return -ENOBUFS;
1843
1844         nla_nest_end(msg, ftm);
1845         return 0;
1846 }
1847
1848 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev,
1849                                   struct sk_buff *msg)
1850 {
1851         const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa;
1852         struct nlattr *pmsr, *caps;
1853
1854         if (!cap)
1855                 return 0;
1856
1857         /*
1858          * we don't need to clean up anything here since the caller
1859          * will genlmsg_cancel() if we fail
1860          */
1861
1862         pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS);
1863         if (!pmsr)
1864                 return -ENOBUFS;
1865
1866         if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers))
1867                 return -ENOBUFS;
1868
1869         if (cap->report_ap_tsf &&
1870             nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF))
1871                 return -ENOBUFS;
1872
1873         if (cap->randomize_mac_addr &&
1874             nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR))
1875                 return -ENOBUFS;
1876
1877         caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA);
1878         if (!caps)
1879                 return -ENOBUFS;
1880
1881         if (nl80211_send_pmsr_ftm_capa(cap, msg))
1882                 return -ENOBUFS;
1883
1884         nla_nest_end(msg, caps);
1885         nla_nest_end(msg, pmsr);
1886
1887         return 0;
1888 }
1889
1890 struct nl80211_dump_wiphy_state {
1891         s64 filter_wiphy;
1892         long start;
1893         long split_start, band_start, chan_start, capa_start;
1894         bool split;
1895 };
1896
1897 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev,
1898                               enum nl80211_commands cmd,
1899                               struct sk_buff *msg, u32 portid, u32 seq,
1900                               int flags, struct nl80211_dump_wiphy_state *state)
1901 {
1902         void *hdr;
1903         struct nlattr *nl_bands, *nl_band;
1904         struct nlattr *nl_freqs, *nl_freq;
1905         struct nlattr *nl_cmds;
1906         enum nl80211_band band;
1907         struct ieee80211_channel *chan;
1908         int i;
1909         const struct ieee80211_txrx_stypes *mgmt_stypes =
1910                                 rdev->wiphy.mgmt_stypes;
1911         u32 features;
1912
1913         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
1914         if (!hdr)
1915                 return -ENOBUFS;
1916
1917         if (WARN_ON(!state))
1918                 return -EINVAL;
1919
1920         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
1921             nla_put_string(msg, NL80211_ATTR_WIPHY_NAME,
1922                            wiphy_name(&rdev->wiphy)) ||
1923             nla_put_u32(msg, NL80211_ATTR_GENERATION,
1924                         cfg80211_rdev_list_generation))
1925                 goto nla_put_failure;
1926
1927         if (cmd != NL80211_CMD_NEW_WIPHY)
1928                 goto finish;
1929
1930         switch (state->split_start) {
1931         case 0:
1932                 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT,
1933                                rdev->wiphy.retry_short) ||
1934                     nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG,
1935                                rdev->wiphy.retry_long) ||
1936                     nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD,
1937                                 rdev->wiphy.frag_threshold) ||
1938                     nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD,
1939                                 rdev->wiphy.rts_threshold) ||
1940                     nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS,
1941                                rdev->wiphy.coverage_class) ||
1942                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS,
1943                                rdev->wiphy.max_scan_ssids) ||
1944                     nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS,
1945                                rdev->wiphy.max_sched_scan_ssids) ||
1946                     nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN,
1947                                 rdev->wiphy.max_scan_ie_len) ||
1948                     nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN,
1949                                 rdev->wiphy.max_sched_scan_ie_len) ||
1950                     nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS,
1951                                rdev->wiphy.max_match_sets) ||
1952                     nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS,
1953                                 rdev->wiphy.max_sched_scan_plans) ||
1954                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL,
1955                                 rdev->wiphy.max_sched_scan_plan_interval) ||
1956                     nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS,
1957                                 rdev->wiphy.max_sched_scan_plan_iterations))
1958                         goto nla_put_failure;
1959
1960                 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) &&
1961                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN))
1962                         goto nla_put_failure;
1963                 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) &&
1964                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH))
1965                         goto nla_put_failure;
1966                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) &&
1967                     nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD))
1968                         goto nla_put_failure;
1969                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) &&
1970                     nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT))
1971                         goto nla_put_failure;
1972                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) &&
1973                     nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT))
1974                         goto nla_put_failure;
1975                 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) &&
1976                     nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP))
1977                         goto nla_put_failure;
1978                 state->split_start++;
1979                 if (state->split)
1980                         break;
1981                 /* fall through */
1982         case 1:
1983                 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES,
1984                             sizeof(u32) * rdev->wiphy.n_cipher_suites,
1985                             rdev->wiphy.cipher_suites))
1986                         goto nla_put_failure;
1987
1988                 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS,
1989                                rdev->wiphy.max_num_pmkids))
1990                         goto nla_put_failure;
1991
1992                 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
1993                     nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE))
1994                         goto nla_put_failure;
1995
1996                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX,
1997                                 rdev->wiphy.available_antennas_tx) ||
1998                     nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX,
1999                                 rdev->wiphy.available_antennas_rx))
2000                         goto nla_put_failure;
2001
2002                 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) &&
2003                     nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD,
2004                                 rdev->wiphy.probe_resp_offload))
2005                         goto nla_put_failure;
2006
2007                 if ((rdev->wiphy.available_antennas_tx ||
2008                      rdev->wiphy.available_antennas_rx) &&
2009                     rdev->ops->get_antenna) {
2010                         u32 tx_ant = 0, rx_ant = 0;
2011                         int res;
2012
2013                         res = rdev_get_antenna(rdev, &tx_ant, &rx_ant);
2014                         if (!res) {
2015                                 if (nla_put_u32(msg,
2016                                                 NL80211_ATTR_WIPHY_ANTENNA_TX,
2017                                                 tx_ant) ||
2018                                     nla_put_u32(msg,
2019                                                 NL80211_ATTR_WIPHY_ANTENNA_RX,
2020                                                 rx_ant))
2021                                         goto nla_put_failure;
2022                         }
2023                 }
2024
2025                 state->split_start++;
2026                 if (state->split)
2027                         break;
2028                 /* fall through */
2029         case 2:
2030                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES,
2031                                         rdev->wiphy.interface_modes))
2032                                 goto nla_put_failure;
2033                 state->split_start++;
2034                 if (state->split)
2035                         break;
2036                 /* fall through */
2037         case 3:
2038                 nl_bands = nla_nest_start_noflag(msg,
2039                                                  NL80211_ATTR_WIPHY_BANDS);
2040                 if (!nl_bands)
2041                         goto nla_put_failure;
2042
2043                 for (band = state->band_start;
2044                      band < NUM_NL80211_BANDS; band++) {
2045                         struct ieee80211_supported_band *sband;
2046
2047                         sband = rdev->wiphy.bands[band];
2048
2049                         if (!sband)
2050                                 continue;
2051
2052                         nl_band = nla_nest_start_noflag(msg, band);
2053                         if (!nl_band)
2054                                 goto nla_put_failure;
2055
2056                         switch (state->chan_start) {
2057                         case 0:
2058                                 if (nl80211_send_band_rateinfo(msg, sband))
2059                                         goto nla_put_failure;
2060                                 state->chan_start++;
2061                                 if (state->split)
2062                                         break;
2063                                 /* fall through */
2064                         default:
2065                                 /* add frequencies */
2066                                 nl_freqs = nla_nest_start_noflag(msg,
2067                                                                  NL80211_BAND_ATTR_FREQS);
2068                                 if (!nl_freqs)
2069                                         goto nla_put_failure;
2070
2071                                 for (i = state->chan_start - 1;
2072                                      i < sband->n_channels;
2073                                      i++) {
2074                                         nl_freq = nla_nest_start_noflag(msg,
2075                                                                         i);
2076                                         if (!nl_freq)
2077                                                 goto nla_put_failure;
2078
2079                                         chan = &sband->channels[i];
2080
2081                                         if (nl80211_msg_put_channel(
2082                                                         msg, &rdev->wiphy, chan,
2083                                                         state->split))
2084                                                 goto nla_put_failure;
2085
2086                                         nla_nest_end(msg, nl_freq);
2087                                         if (state->split)
2088                                                 break;
2089                                 }
2090                                 if (i < sband->n_channels)
2091                                         state->chan_start = i + 2;
2092                                 else
2093                                         state->chan_start = 0;
2094                                 nla_nest_end(msg, nl_freqs);
2095                         }
2096
2097                         nla_nest_end(msg, nl_band);
2098
2099                         if (state->split) {
2100                                 /* start again here */
2101                                 if (state->chan_start)
2102                                         band--;
2103                                 break;
2104                         }
2105                 }
2106                 nla_nest_end(msg, nl_bands);
2107
2108                 if (band < NUM_NL80211_BANDS)
2109                         state->band_start = band + 1;
2110                 else
2111                         state->band_start = 0;
2112
2113                 /* if bands & channels are done, continue outside */
2114                 if (state->band_start == 0 && state->chan_start == 0)
2115                         state->split_start++;
2116                 if (state->split)
2117                         break;
2118                 /* fall through */
2119         case 4:
2120                 nl_cmds = nla_nest_start_noflag(msg,
2121                                                 NL80211_ATTR_SUPPORTED_COMMANDS);
2122                 if (!nl_cmds)
2123                         goto nla_put_failure;
2124
2125                 i = nl80211_add_commands_unsplit(rdev, msg);
2126                 if (i < 0)
2127                         goto nla_put_failure;
2128                 if (state->split) {
2129                         CMD(crit_proto_start, CRIT_PROTOCOL_START);
2130                         CMD(crit_proto_stop, CRIT_PROTOCOL_STOP);
2131                         if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)
2132                                 CMD(channel_switch, CHANNEL_SWITCH);
2133                         CMD(set_qos_map, SET_QOS_MAP);
2134                         if (rdev->wiphy.features &
2135                                         NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)
2136                                 CMD(add_tx_ts, ADD_TX_TS);
2137                         CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST);
2138                         CMD(update_connect_params, UPDATE_CONNECT_PARAMS);
2139                         CMD(update_ft_ies, UPDATE_FT_IES);
2140                 }
2141 #undef CMD
2142
2143                 nla_nest_end(msg, nl_cmds);
2144                 state->split_start++;
2145                 if (state->split)
2146                         break;
2147                 /* fall through */
2148         case 5:
2149                 if (rdev->ops->remain_on_channel &&
2150                     (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) &&
2151                     nla_put_u32(msg,
2152                                 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION,
2153                                 rdev->wiphy.max_remain_on_channel_duration))
2154                         goto nla_put_failure;
2155
2156                 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) &&
2157                     nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK))
2158                         goto nla_put_failure;
2159
2160                 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes))
2161                         goto nla_put_failure;
2162                 state->split_start++;
2163                 if (state->split)
2164                         break;
2165                 /* fall through */
2166         case 6:
2167 #ifdef CONFIG_PM
2168                 if (nl80211_send_wowlan(msg, rdev, state->split))
2169                         goto nla_put_failure;
2170                 state->split_start++;
2171                 if (state->split)
2172                         break;
2173 #else
2174                 state->split_start++;
2175 #endif
2176                 /* fall through */
2177         case 7:
2178                 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES,
2179                                         rdev->wiphy.software_iftypes))
2180                         goto nla_put_failure;
2181
2182                 if (nl80211_put_iface_combinations(&rdev->wiphy, msg,
2183                                                    state->split))
2184                         goto nla_put_failure;
2185
2186                 state->split_start++;
2187                 if (state->split)
2188                         break;
2189                 /* fall through */
2190         case 8:
2191                 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) &&
2192                     nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME,
2193                                 rdev->wiphy.ap_sme_capa))
2194                         goto nla_put_failure;
2195
2196                 features = rdev->wiphy.features;
2197                 /*
2198                  * We can only add the per-channel limit information if the
2199                  * dump is split, otherwise it makes it too big. Therefore
2200                  * only advertise it in that case.
2201                  */
2202                 if (state->split)
2203                         features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS;
2204                 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features))
2205                         goto nla_put_failure;
2206
2207                 if (rdev->wiphy.ht_capa_mod_mask &&
2208                     nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK,
2209                             sizeof(*rdev->wiphy.ht_capa_mod_mask),
2210                             rdev->wiphy.ht_capa_mod_mask))
2211                         goto nla_put_failure;
2212
2213                 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME &&
2214                     rdev->wiphy.max_acl_mac_addrs &&
2215                     nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX,
2216                                 rdev->wiphy.max_acl_mac_addrs))
2217                         goto nla_put_failure;
2218
2219                 /*
2220                  * Any information below this point is only available to
2221                  * applications that can deal with it being split. This
2222                  * helps ensure that newly added capabilities don't break
2223                  * older tools by overrunning their buffers.
2224                  *
2225                  * We still increment split_start so that in the split
2226                  * case we'll continue with more data in the next round,
2227                  * but break unconditionally so unsplit data stops here.
2228                  */
2229                 state->split_start++;
2230                 break;
2231         case 9:
2232                 if (rdev->wiphy.extended_capabilities &&
2233                     (nla_put(msg, NL80211_ATTR_EXT_CAPA,
2234                              rdev->wiphy.extended_capabilities_len,
2235                              rdev->wiphy.extended_capabilities) ||
2236                      nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2237                              rdev->wiphy.extended_capabilities_len,
2238                              rdev->wiphy.extended_capabilities_mask)))
2239                         goto nla_put_failure;
2240
2241                 if (rdev->wiphy.vht_capa_mod_mask &&
2242                     nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK,
2243                             sizeof(*rdev->wiphy.vht_capa_mod_mask),
2244                             rdev->wiphy.vht_capa_mod_mask))
2245                         goto nla_put_failure;
2246
2247                 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN,
2248                             rdev->wiphy.perm_addr))
2249                         goto nla_put_failure;
2250
2251                 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) &&
2252                     nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN,
2253                             rdev->wiphy.addr_mask))
2254                         goto nla_put_failure;
2255
2256                 if (rdev->wiphy.n_addresses > 1) {
2257                         void *attr;
2258
2259                         attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS);
2260                         if (!attr)
2261                                 goto nla_put_failure;
2262
2263                         for (i = 0; i < rdev->wiphy.n_addresses; i++)
2264                                 if (nla_put(msg, i + 1, ETH_ALEN,
2265                                             rdev->wiphy.addresses[i].addr))
2266                                         goto nla_put_failure;
2267
2268                         nla_nest_end(msg, attr);
2269                 }
2270
2271                 state->split_start++;
2272                 break;
2273         case 10:
2274                 if (nl80211_send_coalesce(msg, rdev))
2275                         goto nla_put_failure;
2276
2277                 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) &&
2278                     (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) ||
2279                      nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ)))
2280                         goto nla_put_failure;
2281
2282                 if (rdev->wiphy.max_ap_assoc_sta &&
2283                     nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA,
2284                                 rdev->wiphy.max_ap_assoc_sta))
2285                         goto nla_put_failure;
2286
2287                 state->split_start++;
2288                 break;
2289         case 11:
2290                 if (rdev->wiphy.n_vendor_commands) {
2291                         const struct nl80211_vendor_cmd_info *info;
2292                         struct nlattr *nested;
2293
2294                         nested = nla_nest_start_noflag(msg,
2295                                                        NL80211_ATTR_VENDOR_DATA);
2296                         if (!nested)
2297                                 goto nla_put_failure;
2298
2299                         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
2300                                 info = &rdev->wiphy.vendor_commands[i].info;
2301                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2302                                         goto nla_put_failure;
2303                         }
2304                         nla_nest_end(msg, nested);
2305                 }
2306
2307                 if (rdev->wiphy.n_vendor_events) {
2308                         const struct nl80211_vendor_cmd_info *info;
2309                         struct nlattr *nested;
2310
2311                         nested = nla_nest_start_noflag(msg,
2312                                                        NL80211_ATTR_VENDOR_EVENTS);
2313                         if (!nested)
2314                                 goto nla_put_failure;
2315
2316                         for (i = 0; i < rdev->wiphy.n_vendor_events; i++) {
2317                                 info = &rdev->wiphy.vendor_events[i];
2318                                 if (nla_put(msg, i + 1, sizeof(*info), info))
2319                                         goto nla_put_failure;
2320                         }
2321                         nla_nest_end(msg, nested);
2322                 }
2323                 state->split_start++;
2324                 break;
2325         case 12:
2326                 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH &&
2327                     nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS,
2328                                rdev->wiphy.max_num_csa_counters))
2329                         goto nla_put_failure;
2330
2331                 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
2332                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
2333                         goto nla_put_failure;
2334
2335                 if (rdev->wiphy.max_sched_scan_reqs &&
2336                     nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS,
2337                                 rdev->wiphy.max_sched_scan_reqs))
2338                         goto nla_put_failure;
2339
2340                 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES,
2341                             sizeof(rdev->wiphy.ext_features),
2342                             rdev->wiphy.ext_features))
2343                         goto nla_put_failure;
2344
2345                 if (rdev->wiphy.bss_select_support) {
2346                         struct nlattr *nested;
2347                         u32 bss_select_support = rdev->wiphy.bss_select_support;
2348
2349                         nested = nla_nest_start_noflag(msg,
2350                                                        NL80211_ATTR_BSS_SELECT);
2351                         if (!nested)
2352                                 goto nla_put_failure;
2353
2354                         i = 0;
2355                         while (bss_select_support) {
2356                                 if ((bss_select_support & 1) &&
2357                                     nla_put_flag(msg, i))
2358                                         goto nla_put_failure;
2359                                 i++;
2360                                 bss_select_support >>= 1;
2361                         }
2362                         nla_nest_end(msg, nested);
2363                 }
2364
2365                 state->split_start++;
2366                 break;
2367         case 13:
2368                 if (rdev->wiphy.num_iftype_ext_capab &&
2369                     rdev->wiphy.iftype_ext_capab) {
2370                         struct nlattr *nested_ext_capab, *nested;
2371
2372                         nested = nla_nest_start_noflag(msg,
2373                                                        NL80211_ATTR_IFTYPE_EXT_CAPA);
2374                         if (!nested)
2375                                 goto nla_put_failure;
2376
2377                         for (i = state->capa_start;
2378                              i < rdev->wiphy.num_iftype_ext_capab; i++) {
2379                                 const struct wiphy_iftype_ext_capab *capab;
2380
2381                                 capab = &rdev->wiphy.iftype_ext_capab[i];
2382
2383                                 nested_ext_capab = nla_nest_start_noflag(msg,
2384                                                                          i);
2385                                 if (!nested_ext_capab ||
2386                                     nla_put_u32(msg, NL80211_ATTR_IFTYPE,
2387                                                 capab->iftype) ||
2388                                     nla_put(msg, NL80211_ATTR_EXT_CAPA,
2389                                             capab->extended_capabilities_len,
2390                                             capab->extended_capabilities) ||
2391                                     nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK,
2392                                             capab->extended_capabilities_len,
2393                                             capab->extended_capabilities_mask))
2394                                         goto nla_put_failure;
2395
2396                                 nla_nest_end(msg, nested_ext_capab);
2397                                 if (state->split)
2398                                         break;
2399                         }
2400                         nla_nest_end(msg, nested);
2401                         if (i < rdev->wiphy.num_iftype_ext_capab) {
2402                                 state->capa_start = i + 1;
2403                                 break;
2404                         }
2405                 }
2406
2407                 if (nla_put_u32(msg, NL80211_ATTR_BANDS,
2408                                 rdev->wiphy.nan_supported_bands))
2409                         goto nla_put_failure;
2410
2411                 if (wiphy_ext_feature_isset(&rdev->wiphy,
2412                                             NL80211_EXT_FEATURE_TXQS)) {
2413                         struct cfg80211_txq_stats txqstats = {};
2414                         int res;
2415
2416                         res = rdev_get_txq_stats(rdev, NULL, &txqstats);
2417                         if (!res &&
2418                             !nl80211_put_txq_stats(msg, &txqstats,
2419                                                    NL80211_ATTR_TXQ_STATS))
2420                                 goto nla_put_failure;
2421
2422                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT,
2423                                         rdev->wiphy.txq_limit))
2424                                 goto nla_put_failure;
2425                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT,
2426                                         rdev->wiphy.txq_memory_limit))
2427                                 goto nla_put_failure;
2428                         if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM,
2429                                         rdev->wiphy.txq_quantum))
2430                                 goto nla_put_failure;
2431                 }
2432
2433                 state->split_start++;
2434                 break;
2435         case 14:
2436                 if (nl80211_send_pmsr_capa(rdev, msg))
2437                         goto nla_put_failure;
2438
2439                 state->split_start++;
2440                 break;
2441         case 15:
2442                 if (rdev->wiphy.akm_suites &&
2443                     nla_put(msg, NL80211_ATTR_AKM_SUITES,
2444                             sizeof(u32) * rdev->wiphy.n_akm_suites,
2445                             rdev->wiphy.akm_suites))
2446                         goto nla_put_failure;
2447
2448                 /* done */
2449                 state->split_start = 0;
2450                 break;
2451         }
2452  finish:
2453         genlmsg_end(msg, hdr);
2454         return 0;
2455
2456  nla_put_failure:
2457         genlmsg_cancel(msg, hdr);
2458         return -EMSGSIZE;
2459 }
2460
2461 static int nl80211_dump_wiphy_parse(struct sk_buff *skb,
2462                                     struct netlink_callback *cb,
2463                                     struct nl80211_dump_wiphy_state *state)
2464 {
2465         struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
2466         int ret;
2467
2468         if (!tb)
2469                 return -ENOMEM;
2470
2471         ret = nlmsg_parse_deprecated(cb->nlh,
2472                                      GENL_HDRLEN + nl80211_fam.hdrsize,
2473                                      tb, nl80211_fam.maxattr,
2474                                      nl80211_policy, NULL);
2475         /* ignore parse errors for backward compatibility */
2476         if (ret) {
2477                 ret = 0;
2478                 goto out;
2479         }
2480
2481         state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP];
2482         if (tb[NL80211_ATTR_WIPHY])
2483                 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]);
2484         if (tb[NL80211_ATTR_WDEV])
2485                 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32;
2486         if (tb[NL80211_ATTR_IFINDEX]) {
2487                 struct net_device *netdev;
2488                 struct cfg80211_registered_device *rdev;
2489                 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
2490
2491                 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx);
2492                 if (!netdev) {
2493                         ret = -ENODEV;
2494                         goto out;
2495                 }
2496                 if (netdev->ieee80211_ptr) {
2497                         rdev = wiphy_to_rdev(
2498                                 netdev->ieee80211_ptr->wiphy);
2499                         state->filter_wiphy = rdev->wiphy_idx;
2500                 }
2501         }
2502
2503         ret = 0;
2504 out:
2505         kfree(tb);
2506         return ret;
2507 }
2508
2509 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb)
2510 {
2511         int idx = 0, ret;
2512         struct nl80211_dump_wiphy_state *state = (void *)cb->args[0];
2513         struct cfg80211_registered_device *rdev;
2514
2515         rtnl_lock();
2516         if (!state) {
2517                 state = kzalloc(sizeof(*state), GFP_KERNEL);
2518                 if (!state) {
2519                         rtnl_unlock();
2520                         return -ENOMEM;
2521                 }
2522                 state->filter_wiphy = -1;
2523                 ret = nl80211_dump_wiphy_parse(skb, cb, state);
2524                 if (ret) {
2525                         kfree(state);
2526                         rtnl_unlock();
2527                         return ret;
2528                 }
2529                 cb->args[0] = (long)state;
2530         }
2531
2532         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
2533                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
2534                         continue;
2535                 if (++idx <= state->start)
2536                         continue;
2537                 if (state->filter_wiphy != -1 &&
2538                     state->filter_wiphy != rdev->wiphy_idx)
2539                         continue;
2540                 /* attempt to fit multiple wiphy data chunks into the skb */
2541                 do {
2542                         ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY,
2543                                                  skb,
2544                                                  NETLINK_CB(cb->skb).portid,
2545                                                  cb->nlh->nlmsg_seq,
2546                                                  NLM_F_MULTI, state);
2547                         if (ret < 0) {
2548                                 /*
2549                                  * If sending the wiphy data didn't fit (ENOBUFS
2550                                  * or EMSGSIZE returned), this SKB is still
2551                                  * empty (so it's not too big because another
2552                                  * wiphy dataset is already in the skb) and
2553                                  * we've not tried to adjust the dump allocation
2554                                  * yet ... then adjust the alloc size to be
2555                                  * bigger, and return 1 but with the empty skb.
2556                                  * This results in an empty message being RX'ed
2557                                  * in userspace, but that is ignored.
2558                                  *
2559                                  * We can then retry with the larger buffer.
2560                                  */
2561                                 if ((ret == -ENOBUFS || ret == -EMSGSIZE) &&
2562                                     !skb->len && !state->split &&
2563                                     cb->min_dump_alloc < 4096) {
2564                                         cb->min_dump_alloc = 4096;
2565                                         state->split_start = 0;
2566                                         rtnl_unlock();
2567                                         return 1;
2568                                 }
2569                                 idx--;
2570                                 break;
2571                         }
2572                 } while (state->split_start > 0);
2573                 break;
2574         }
2575         rtnl_unlock();
2576
2577         state->start = idx;
2578
2579         return skb->len;
2580 }
2581
2582 static int nl80211_dump_wiphy_done(struct netlink_callback *cb)
2583 {
2584         kfree((void *)cb->args[0]);
2585         return 0;
2586 }
2587
2588 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info)
2589 {
2590         struct sk_buff *msg;
2591         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2592         struct nl80211_dump_wiphy_state state = {};
2593
2594         msg = nlmsg_new(4096, GFP_KERNEL);
2595         if (!msg)
2596                 return -ENOMEM;
2597
2598         if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg,
2599                                info->snd_portid, info->snd_seq, 0,
2600                                &state) < 0) {
2601                 nlmsg_free(msg);
2602                 return -ENOBUFS;
2603         }
2604
2605         return genlmsg_reply(msg, info);
2606 }
2607
2608 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = {
2609         [NL80211_TXQ_ATTR_QUEUE]                = { .type = NLA_U8 },
2610         [NL80211_TXQ_ATTR_TXOP]                 = { .type = NLA_U16 },
2611         [NL80211_TXQ_ATTR_CWMIN]                = { .type = NLA_U16 },
2612         [NL80211_TXQ_ATTR_CWMAX]                = { .type = NLA_U16 },
2613         [NL80211_TXQ_ATTR_AIFS]                 = { .type = NLA_U8 },
2614 };
2615
2616 static int parse_txq_params(struct nlattr *tb[],
2617                             struct ieee80211_txq_params *txq_params)
2618 {
2619         u8 ac;
2620
2621         if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] ||
2622             !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] ||
2623             !tb[NL80211_TXQ_ATTR_AIFS])
2624                 return -EINVAL;
2625
2626         ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]);
2627         txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]);
2628         txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]);
2629         txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]);
2630         txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]);
2631
2632         if (ac >= NL80211_NUM_ACS)
2633                 return -EINVAL;
2634         txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS);
2635         return 0;
2636 }
2637
2638 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev)
2639 {
2640         /*
2641          * You can only set the channel explicitly for WDS interfaces,
2642          * all others have their channel managed via their respective
2643          * "establish a connection" command (connect, join, ...)
2644          *
2645          * For AP/GO and mesh mode, the channel can be set with the
2646          * channel userspace API, but is only stored and passed to the
2647          * low-level driver when the AP starts or the mesh is joined.
2648          * This is for backward compatibility, userspace can also give
2649          * the channel in the start-ap or join-mesh commands instead.
2650          *
2651          * Monitors are special as they are normally slaved to
2652          * whatever else is going on, so they have their own special
2653          * operation to set the monitor channel if possible.
2654          */
2655         return !wdev ||
2656                 wdev->iftype == NL80211_IFTYPE_AP ||
2657                 wdev->iftype == NL80211_IFTYPE_MESH_POINT ||
2658                 wdev->iftype == NL80211_IFTYPE_MONITOR ||
2659                 wdev->iftype == NL80211_IFTYPE_P2P_GO;
2660 }
2661
2662 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev,
2663                           struct genl_info *info,
2664                           struct cfg80211_chan_def *chandef)
2665 {
2666         struct netlink_ext_ack *extack = info->extack;
2667         struct nlattr **attrs = info->attrs;
2668         u32 control_freq;
2669
2670         if (!attrs[NL80211_ATTR_WIPHY_FREQ])
2671                 return -EINVAL;
2672
2673         control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]);
2674
2675         memset(chandef, 0, sizeof(*chandef));
2676
2677         chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq);
2678         chandef->width = NL80211_CHAN_WIDTH_20_NOHT;
2679         chandef->center_freq1 = control_freq;
2680         chandef->center_freq2 = 0;
2681
2682         /* Primary channel not allowed */
2683         if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) {
2684                 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ],
2685                                     "Channel is disabled");
2686                 return -EINVAL;
2687         }
2688
2689         if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) {
2690                 enum nl80211_channel_type chantype;
2691
2692                 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
2693
2694                 switch (chantype) {
2695                 case NL80211_CHAN_NO_HT:
2696                 case NL80211_CHAN_HT20:
2697                 case NL80211_CHAN_HT40PLUS:
2698                 case NL80211_CHAN_HT40MINUS:
2699                         cfg80211_chandef_create(chandef, chandef->chan,
2700                                                 chantype);
2701                         /* user input for center_freq is incorrect */
2702                         if (attrs[NL80211_ATTR_CENTER_FREQ1] &&
2703                             chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) {
2704                                 NL_SET_ERR_MSG_ATTR(extack,
2705                                                     attrs[NL80211_ATTR_CENTER_FREQ1],
2706                                                     "bad center frequency 1");
2707                                 return -EINVAL;
2708                         }
2709                         /* center_freq2 must be zero */
2710                         if (attrs[NL80211_ATTR_CENTER_FREQ2] &&
2711                             nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) {
2712                                 NL_SET_ERR_MSG_ATTR(extack,
2713                                                     attrs[NL80211_ATTR_CENTER_FREQ2],
2714                                                     "center frequency 2 can't be used");
2715                                 return -EINVAL;
2716                         }
2717                         break;
2718                 default:
2719                         NL_SET_ERR_MSG_ATTR(extack,
2720                                             attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE],
2721                                             "invalid channel type");
2722                         return -EINVAL;
2723                 }
2724         } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) {
2725                 chandef->width =
2726                         nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]);
2727                 if (attrs[NL80211_ATTR_CENTER_FREQ1])
2728                         chandef->center_freq1 =
2729                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]);
2730                 if (attrs[NL80211_ATTR_CENTER_FREQ2])
2731                         chandef->center_freq2 =
2732                                 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]);
2733         }
2734
2735         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
2736                 chandef->edmg.channels =
2737                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
2738
2739                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
2740                         chandef->edmg.bw_config =
2741                      nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
2742         } else {
2743                 chandef->edmg.bw_config = 0;
2744                 chandef->edmg.channels = 0;
2745         }
2746
2747         if (!cfg80211_chandef_valid(chandef)) {
2748                 NL_SET_ERR_MSG(extack, "invalid channel definition");
2749                 return -EINVAL;
2750         }
2751
2752         if (!cfg80211_chandef_usable(&rdev->wiphy, chandef,
2753                                      IEEE80211_CHAN_DISABLED)) {
2754                 NL_SET_ERR_MSG(extack, "(extension) channel is disabled");
2755                 return -EINVAL;
2756         }
2757
2758         if ((chandef->width == NL80211_CHAN_WIDTH_5 ||
2759              chandef->width == NL80211_CHAN_WIDTH_10) &&
2760             !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) {
2761                 NL_SET_ERR_MSG(extack, "5/10 MHz not supported");
2762                 return -EINVAL;
2763         }
2764
2765         return 0;
2766 }
2767
2768 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev,
2769                                  struct net_device *dev,
2770                                  struct genl_info *info)
2771 {
2772         struct cfg80211_chan_def chandef;
2773         int result;
2774         enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR;
2775         struct wireless_dev *wdev = NULL;
2776
2777         if (dev)
2778                 wdev = dev->ieee80211_ptr;
2779         if (!nl80211_can_set_dev_channel(wdev))
2780                 return -EOPNOTSUPP;
2781         if (wdev)
2782                 iftype = wdev->iftype;
2783
2784         result = nl80211_parse_chandef(rdev, info, &chandef);
2785         if (result)
2786                 return result;
2787
2788         switch (iftype) {
2789         case NL80211_IFTYPE_AP:
2790         case NL80211_IFTYPE_P2P_GO:
2791                 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
2792                                                    iftype)) {
2793                         result = -EINVAL;
2794                         break;
2795                 }
2796                 if (wdev->beacon_interval) {
2797                         if (!dev || !rdev->ops->set_ap_chanwidth ||
2798                             !(rdev->wiphy.features &
2799                               NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) {
2800                                 result = -EBUSY;
2801                                 break;
2802                         }
2803
2804                         /* Only allow dynamic channel width changes */
2805                         if (chandef.chan != wdev->preset_chandef.chan) {
2806                                 result = -EBUSY;
2807                                 break;
2808                         }
2809                         result = rdev_set_ap_chanwidth(rdev, dev, &chandef);
2810                         if (result)
2811                                 break;
2812                 }
2813                 wdev->preset_chandef = chandef;
2814                 result = 0;
2815                 break;
2816         case NL80211_IFTYPE_MESH_POINT:
2817                 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
2818                 break;
2819         case NL80211_IFTYPE_MONITOR:
2820                 result = cfg80211_set_monitor_channel(rdev, &chandef);
2821                 break;
2822         default:
2823                 result = -EINVAL;
2824         }
2825
2826         return result;
2827 }
2828
2829 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
2830 {
2831         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2832         struct net_device *netdev = info->user_ptr[1];
2833
2834         return __nl80211_set_channel(rdev, netdev, info);
2835 }
2836
2837 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info)
2838 {
2839         struct cfg80211_registered_device *rdev = info->user_ptr[0];
2840         struct net_device *dev = info->user_ptr[1];
2841         struct wireless_dev *wdev = dev->ieee80211_ptr;
2842         const u8 *bssid;
2843
2844         if (!info->attrs[NL80211_ATTR_MAC])
2845                 return -EINVAL;
2846
2847         if (netif_running(dev))
2848                 return -EBUSY;
2849
2850         if (!rdev->ops->set_wds_peer)
2851                 return -EOPNOTSUPP;
2852
2853         if (wdev->iftype != NL80211_IFTYPE_WDS)
2854                 return -EOPNOTSUPP;
2855
2856         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
2857         return rdev_set_wds_peer(rdev, dev, bssid);
2858 }
2859
2860 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
2861 {
2862         struct cfg80211_registered_device *rdev;
2863         struct net_device *netdev = NULL;
2864         struct wireless_dev *wdev;
2865         int result = 0, rem_txq_params = 0;
2866         struct nlattr *nl_txq_params;
2867         u32 changed;
2868         u8 retry_short = 0, retry_long = 0;
2869         u32 frag_threshold = 0, rts_threshold = 0;
2870         u8 coverage_class = 0;
2871         u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
2872
2873         ASSERT_RTNL();
2874
2875         /*
2876          * Try to find the wiphy and netdev. Normally this
2877          * function shouldn't need the netdev, but this is
2878          * done for backward compatibility -- previously
2879          * setting the channel was done per wiphy, but now
2880          * it is per netdev. Previous userland like hostapd
2881          * also passed a netdev to set_wiphy, so that it is
2882          * possible to let that go to the right netdev!
2883          */
2884
2885         if (info->attrs[NL80211_ATTR_IFINDEX]) {
2886                 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]);
2887
2888                 netdev = __dev_get_by_index(genl_info_net(info), ifindex);
2889                 if (netdev && netdev->ieee80211_ptr)
2890                         rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy);
2891                 else
2892                         netdev = NULL;
2893         }
2894
2895         if (!netdev) {
2896                 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
2897                                                   info->attrs);
2898                 if (IS_ERR(rdev))
2899                         return PTR_ERR(rdev);
2900                 wdev = NULL;
2901                 netdev = NULL;
2902                 result = 0;
2903         } else
2904                 wdev = netdev->ieee80211_ptr;
2905
2906         /*
2907          * end workaround code, by now the rdev is available
2908          * and locked, and wdev may or may not be NULL.
2909          */
2910
2911         if (info->attrs[NL80211_ATTR_WIPHY_NAME])
2912                 result = cfg80211_dev_rename(
2913                         rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
2914
2915         if (result)
2916                 return result;
2917
2918         if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
2919                 struct ieee80211_txq_params txq_params;
2920                 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
2921
2922                 if (!rdev->ops->set_txq_params)
2923                         return -EOPNOTSUPP;
2924
2925                 if (!netdev)
2926                         return -EINVAL;
2927
2928                 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
2929                     netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
2930                         return -EINVAL;
2931
2932                 if (!netif_running(netdev))
2933                         return -ENETDOWN;
2934
2935                 nla_for_each_nested(nl_txq_params,
2936                                     info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
2937                                     rem_txq_params) {
2938                         result = nla_parse_nested_deprecated(tb,
2939                                                              NL80211_TXQ_ATTR_MAX,
2940                                                              nl_txq_params,
2941                                                              txq_params_policy,
2942                                                              info->extack);
2943                         if (result)
2944                                 return result;
2945                         result = parse_txq_params(tb, &txq_params);
2946                         if (result)
2947                                 return result;
2948
2949                         result = rdev_set_txq_params(rdev, netdev,
2950                                                      &txq_params);
2951                         if (result)
2952                                 return result;
2953                 }
2954         }
2955
2956         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
2957                 result = __nl80211_set_channel(
2958                         rdev,
2959                         nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
2960                         info);
2961                 if (result)
2962                         return result;
2963         }
2964
2965         if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
2966                 struct wireless_dev *txp_wdev = wdev;
2967                 enum nl80211_tx_power_setting type;
2968                 int idx, mbm = 0;
2969
2970                 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
2971                         txp_wdev = NULL;
2972
2973                 if (!rdev->ops->set_tx_power)
2974                         return -EOPNOTSUPP;
2975
2976                 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
2977                 type = nla_get_u32(info->attrs[idx]);
2978
2979                 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
2980                     (type != NL80211_TX_POWER_AUTOMATIC))
2981                         return -EINVAL;
2982
2983                 if (type != NL80211_TX_POWER_AUTOMATIC) {
2984                         idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
2985                         mbm = nla_get_u32(info->attrs[idx]);
2986                 }
2987
2988                 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
2989                 if (result)
2990                         return result;
2991         }
2992
2993         if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
2994             info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) {
2995                 u32 tx_ant, rx_ant;
2996
2997                 if ((!rdev->wiphy.available_antennas_tx &&
2998                      !rdev->wiphy.available_antennas_rx) ||
2999                     !rdev->ops->set_antenna)
3000                         return -EOPNOTSUPP;
3001
3002                 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
3003                 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
3004
3005                 /* reject antenna configurations which don't match the
3006                  * available antenna masks, except for the "all" mask */
3007                 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
3008                     (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
3009                         return -EINVAL;
3010
3011                 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
3012                 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
3013
3014                 result = rdev_set_antenna(rdev, tx_ant, rx_ant);
3015                 if (result)
3016                         return result;
3017         }
3018
3019         changed = 0;
3020
3021         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) {
3022                 retry_short = nla_get_u8(
3023                         info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]);
3024
3025                 changed |= WIPHY_PARAM_RETRY_SHORT;
3026         }
3027
3028         if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) {
3029                 retry_long = nla_get_u8(
3030                         info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]);
3031
3032                 changed |= WIPHY_PARAM_RETRY_LONG;
3033         }
3034
3035         if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
3036                 frag_threshold = nla_get_u32(
3037                         info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
3038                 if (frag_threshold < 256)
3039                         return -EINVAL;
3040
3041                 if (frag_threshold != (u32) -1) {
3042                         /*
3043                          * Fragments (apart from the last one) are required to
3044                          * have even length. Make the fragmentation code
3045                          * simpler by stripping LSB should someone try to use
3046                          * odd threshold value.
3047                          */
3048                         frag_threshold &= ~0x1;
3049                 }
3050                 changed |= WIPHY_PARAM_FRAG_THRESHOLD;
3051         }
3052
3053         if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) {
3054                 rts_threshold = nla_get_u32(
3055                         info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]);
3056                 changed |= WIPHY_PARAM_RTS_THRESHOLD;
3057         }
3058
3059         if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
3060                 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
3061                         return -EINVAL;
3062
3063                 coverage_class = nla_get_u8(
3064                         info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
3065                 changed |= WIPHY_PARAM_COVERAGE_CLASS;
3066         }
3067
3068         if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
3069                 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
3070                         return -EOPNOTSUPP;
3071
3072                 changed |= WIPHY_PARAM_DYN_ACK;
3073         }
3074
3075         if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
3076                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3077                                              NL80211_EXT_FEATURE_TXQS))
3078                         return -EOPNOTSUPP;
3079                 txq_limit = nla_get_u32(
3080                         info->attrs[NL80211_ATTR_TXQ_LIMIT]);
3081                 changed |= WIPHY_PARAM_TXQ_LIMIT;
3082         }
3083
3084         if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
3085                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3086                                              NL80211_EXT_FEATURE_TXQS))
3087                         return -EOPNOTSUPP;
3088                 txq_memory_limit = nla_get_u32(
3089                         info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
3090                 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
3091         }
3092
3093         if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
3094                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
3095                                              NL80211_EXT_FEATURE_TXQS))
3096                         return -EOPNOTSUPP;
3097                 txq_quantum = nla_get_u32(
3098                         info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
3099                 changed |= WIPHY_PARAM_TXQ_QUANTUM;
3100         }
3101
3102         if (changed) {
3103                 u8 old_retry_short, old_retry_long;
3104                 u32 old_frag_threshold, old_rts_threshold;
3105                 u8 old_coverage_class;
3106                 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
3107
3108                 if (!rdev->ops->set_wiphy_params)
3109                         return -EOPNOTSUPP;
3110
3111                 old_retry_short = rdev->wiphy.retry_short;
3112                 old_retry_long = rdev->wiphy.retry_long;
3113                 old_frag_threshold = rdev->wiphy.frag_threshold;
3114                 old_rts_threshold = rdev->wiphy.rts_threshold;
3115                 old_coverage_class = rdev->wiphy.coverage_class;
3116                 old_txq_limit = rdev->wiphy.txq_limit;
3117                 old_txq_memory_limit = rdev->wiphy.txq_memory_limit;
3118                 old_txq_quantum = rdev->wiphy.txq_quantum;
3119
3120                 if (changed & WIPHY_PARAM_RETRY_SHORT)
3121                         rdev->wiphy.retry_short = retry_short;
3122                 if (changed & WIPHY_PARAM_RETRY_LONG)
3123                         rdev->wiphy.retry_long = retry_long;
3124                 if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
3125                         rdev->wiphy.frag_threshold = frag_threshold;
3126                 if (changed & WIPHY_PARAM_RTS_THRESHOLD)
3127                         rdev->wiphy.rts_threshold = rts_threshold;
3128                 if (changed & WIPHY_PARAM_COVERAGE_CLASS)
3129                         rdev->wiphy.coverage_class = coverage_class;
3130                 if (changed & WIPHY_PARAM_TXQ_LIMIT)
3131                         rdev->wiphy.txq_limit = txq_limit;
3132                 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT)
3133                         rdev->wiphy.txq_memory_limit = txq_memory_limit;
3134                 if (changed & WIPHY_PARAM_TXQ_QUANTUM)
3135                         rdev->wiphy.txq_quantum = txq_quantum;
3136
3137                 result = rdev_set_wiphy_params(rdev, changed);
3138                 if (result) {
3139                         rdev->wiphy.retry_short = old_retry_short;
3140                         rdev->wiphy.retry_long = old_retry_long;
3141                         rdev->wiphy.frag_threshold = old_frag_threshold;
3142                         rdev->wiphy.rts_threshold = old_rts_threshold;
3143                         rdev->wiphy.coverage_class = old_coverage_class;
3144                         rdev->wiphy.txq_limit = old_txq_limit;
3145                         rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
3146                         rdev->wiphy.txq_quantum = old_txq_quantum;
3147                         return result;
3148                 }
3149         }
3150         return 0;
3151 }
3152
3153 static int nl80211_send_chandef(struct sk_buff *msg,
3154                                 const struct cfg80211_chan_def *chandef)
3155 {
3156         if (WARN_ON(!cfg80211_chandef_valid(chandef)))
3157                 return -EINVAL;
3158
3159         if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ,
3160                         chandef->chan->center_freq))
3161                 return -ENOBUFS;
3162         switch (chandef->width) {
3163         case NL80211_CHAN_WIDTH_20_NOHT:
3164         case NL80211_CHAN_WIDTH_20:
3165         case NL80211_CHAN_WIDTH_40:
3166                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
3167                                 cfg80211_get_chandef_type(chandef)))
3168                         return -ENOBUFS;
3169                 break;
3170         default:
3171                 break;
3172         }
3173         if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width))
3174                 return -ENOBUFS;
3175         if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1))
3176                 return -ENOBUFS;
3177         if (chandef->center_freq2 &&
3178             nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2))
3179                 return -ENOBUFS;
3180         return 0;
3181 }
3182
3183 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags,
3184                               struct cfg80211_registered_device *rdev,
3185                               struct wireless_dev *wdev,
3186                               enum nl80211_commands cmd)
3187 {
3188         struct net_device *dev = wdev->netdev;
3189         void *hdr;
3190
3191         WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE &&
3192                 cmd != NL80211_CMD_DEL_INTERFACE &&
3193                 cmd != NL80211_CMD_SET_INTERFACE);
3194
3195         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
3196         if (!hdr)
3197                 return -1;
3198
3199         if (dev &&
3200             (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3201              nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name)))
3202                 goto nla_put_failure;
3203
3204         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
3205             nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) ||
3206             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
3207                               NL80211_ATTR_PAD) ||
3208             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) ||
3209             nla_put_u32(msg, NL80211_ATTR_GENERATION,
3210                         rdev->devlist_generation ^
3211                         (cfg80211_rdev_list_generation << 2)) ||
3212             nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr))
3213                 goto nla_put_failure;
3214
3215         if (rdev->ops->get_channel) {
3216                 int ret;
3217                 struct cfg80211_chan_def chandef = {};
3218
3219                 ret = rdev_get_channel(rdev, wdev, &chandef);
3220                 if (ret == 0) {
3221                         if (nl80211_send_chandef(msg, &chandef))
3222                                 goto nla_put_failure;
3223                 }
3224         }
3225
3226         if (rdev->ops->get_tx_power) {
3227                 int dbm, ret;
3228
3229                 ret = rdev_get_tx_power(rdev, wdev, &dbm);
3230                 if (ret == 0 &&
3231                     nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
3232                                 DBM_TO_MBM(dbm)))
3233                         goto nla_put_failure;
3234         }
3235
3236         wdev_lock(wdev);
3237         switch (wdev->iftype) {
3238         case NL80211_IFTYPE_AP:
3239                 if (wdev->ssid_len &&
3240                     nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
3241                         goto nla_put_failure_locked;
3242                 break;
3243         case NL80211_IFTYPE_STATION:
3244         case NL80211_IFTYPE_P2P_CLIENT:
3245         case NL80211_IFTYPE_ADHOC: {
3246                 const u8 *ssid_ie;
3247                 if (!wdev->current_bss)
3248                         break;
3249                 rcu_read_lock();
3250                 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub,
3251                                                WLAN_EID_SSID);
3252                 if (ssid_ie &&
3253                     nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2))
3254                         goto nla_put_failure_rcu_locked;
3255                 rcu_read_unlock();
3256                 break;
3257                 }
3258         default:
3259                 /* nothing */
3260                 break;
3261         }
3262         wdev_unlock(wdev);
3263
3264         if (rdev->ops->get_txq_stats) {
3265                 struct cfg80211_txq_stats txqstats = {};
3266                 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats);
3267
3268                 if (ret == 0 &&
3269                     !nl80211_put_txq_stats(msg, &txqstats,
3270                                            NL80211_ATTR_TXQ_STATS))
3271                         goto nla_put_failure;
3272         }
3273
3274         genlmsg_end(msg, hdr);
3275         return 0;
3276
3277  nla_put_failure_rcu_locked:
3278         rcu_read_unlock();
3279  nla_put_failure_locked:
3280         wdev_unlock(wdev);
3281  nla_put_failure:
3282         genlmsg_cancel(msg, hdr);
3283         return -EMSGSIZE;
3284 }
3285
3286 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb)
3287 {
3288         int wp_idx = 0;
3289         int if_idx = 0;
3290         int wp_start = cb->args[0];
3291         int if_start = cb->args[1];
3292         int filter_wiphy = -1;
3293         struct cfg80211_registered_device *rdev;
3294         struct wireless_dev *wdev;
3295         int ret;
3296
3297         rtnl_lock();
3298         if (!cb->args[2]) {
3299                 struct nl80211_dump_wiphy_state state = {
3300                         .filter_wiphy = -1,
3301                 };
3302
3303                 ret = nl80211_dump_wiphy_parse(skb, cb, &state);
3304                 if (ret)
3305                         goto out_unlock;
3306
3307                 filter_wiphy = state.filter_wiphy;
3308
3309                 /*
3310                  * if filtering, set cb->args[2] to +1 since 0 is the default
3311                  * value needed to determine that parsing is necessary.
3312                  */
3313                 if (filter_wiphy >= 0)
3314                         cb->args[2] = filter_wiphy + 1;
3315                 else
3316                         cb->args[2] = -1;
3317         } else if (cb->args[2] > 0) {
3318                 filter_wiphy = cb->args[2] - 1;
3319         }
3320
3321         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
3322                 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk)))
3323                         continue;
3324                 if (wp_idx < wp_start) {
3325                         wp_idx++;
3326                         continue;
3327                 }
3328
3329                 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx)
3330                         continue;
3331
3332                 if_idx = 0;
3333
3334                 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
3335                         if (if_idx < if_start) {
3336                                 if_idx++;
3337                                 continue;
3338                         }
3339                         if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid,
3340                                                cb->nlh->nlmsg_seq, NLM_F_MULTI,
3341                                                rdev, wdev,
3342                                                NL80211_CMD_NEW_INTERFACE) < 0) {
3343                                 goto out;
3344                         }
3345                         if_idx++;
3346                 }
3347
3348                 wp_idx++;
3349         }
3350  out:
3351         cb->args[0] = wp_idx;
3352         cb->args[1] = if_idx;
3353
3354         ret = skb->len;
3355  out_unlock:
3356         rtnl_unlock();
3357
3358         return ret;
3359 }
3360
3361 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info)
3362 {
3363         struct sk_buff *msg;
3364         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3365         struct wireless_dev *wdev = info->user_ptr[1];
3366
3367         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3368         if (!msg)
3369                 return -ENOMEM;
3370
3371         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3372                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3373                 nlmsg_free(msg);
3374                 return -ENOBUFS;
3375         }
3376
3377         return genlmsg_reply(msg, info);
3378 }
3379
3380 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = {
3381         [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG },
3382         [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG },
3383         [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG },
3384         [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG },
3385         [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG },
3386         [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG },
3387 };
3388
3389 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags)
3390 {
3391         struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1];
3392         int flag;
3393
3394         *mntrflags = 0;
3395
3396         if (!nla)
3397                 return -EINVAL;
3398
3399         if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL))
3400                 return -EINVAL;
3401
3402         for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++)
3403                 if (flags[flag])
3404                         *mntrflags |= (1<<flag);
3405
3406         *mntrflags |= MONITOR_FLAG_CHANGED;
3407
3408         return 0;
3409 }
3410
3411 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev,
3412                                      enum nl80211_iftype type,
3413                                      struct genl_info *info,
3414                                      struct vif_params *params)
3415 {
3416         bool change = false;
3417         int err;
3418
3419         if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) {
3420                 if (type != NL80211_IFTYPE_MONITOR)
3421                         return -EINVAL;
3422
3423                 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS],
3424                                           &params->flags);
3425                 if (err)
3426                         return err;
3427
3428                 change = true;
3429         }
3430
3431         if (params->flags & MONITOR_FLAG_ACTIVE &&
3432             !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR))
3433                 return -EOPNOTSUPP;
3434
3435         if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) {
3436                 const u8 *mumimo_groups;
3437                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3438
3439                 if (type != NL80211_IFTYPE_MONITOR)
3440                         return -EINVAL;
3441
3442                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3443                         return -EOPNOTSUPP;
3444
3445                 mumimo_groups =
3446                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]);
3447
3448                 /* bits 0 and 63 are reserved and must be zero */
3449                 if ((mumimo_groups[0] & BIT(0)) ||
3450                     (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7)))
3451                         return -EINVAL;
3452
3453                 params->vht_mumimo_groups = mumimo_groups;
3454                 change = true;
3455         }
3456
3457         if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) {
3458                 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER;
3459
3460                 if (type != NL80211_IFTYPE_MONITOR)
3461                         return -EINVAL;
3462
3463                 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag))
3464                         return -EOPNOTSUPP;
3465
3466                 params->vht_mumimo_follow_addr =
3467                         nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]);
3468                 change = true;
3469         }
3470
3471         return change ? 1 : 0;
3472 }
3473
3474 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev,
3475                                struct net_device *netdev, u8 use_4addr,
3476                                enum nl80211_iftype iftype)
3477 {
3478         if (!use_4addr) {
3479                 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT))
3480                         return -EBUSY;
3481                 return 0;
3482         }
3483
3484         switch (iftype) {
3485         case NL80211_IFTYPE_AP_VLAN:
3486                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP)
3487                         return 0;
3488                 break;
3489         case NL80211_IFTYPE_STATION:
3490                 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION)
3491                         return 0;
3492                 break;
3493         default:
3494                 break;
3495         }
3496
3497         return -EOPNOTSUPP;
3498 }
3499
3500 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info)
3501 {
3502         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3503         struct vif_params params;
3504         int err;
3505         enum nl80211_iftype otype, ntype;
3506         struct net_device *dev = info->user_ptr[1];
3507         bool change = false;
3508
3509         memset(&params, 0, sizeof(params));
3510
3511         otype = ntype = dev->ieee80211_ptr->iftype;
3512
3513         if (info->attrs[NL80211_ATTR_IFTYPE]) {
3514                 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3515                 if (otype != ntype)
3516                         change = true;
3517         }
3518
3519         if (info->attrs[NL80211_ATTR_MESH_ID]) {
3520                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3521
3522                 if (ntype != NL80211_IFTYPE_MESH_POINT)
3523                         return -EINVAL;
3524                 if (netif_running(dev))
3525                         return -EBUSY;
3526
3527                 wdev_lock(wdev);
3528                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3529                              IEEE80211_MAX_MESH_ID_LEN);
3530                 wdev->mesh_id_up_len =
3531                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3532                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3533                        wdev->mesh_id_up_len);
3534                 wdev_unlock(wdev);
3535         }
3536
3537         if (info->attrs[NL80211_ATTR_4ADDR]) {
3538                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3539                 change = true;
3540                 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype);
3541                 if (err)
3542                         return err;
3543         } else {
3544                 params.use_4addr = -1;
3545         }
3546
3547         err = nl80211_parse_mon_options(rdev, ntype, info, &params);
3548         if (err < 0)
3549                 return err;
3550         if (err > 0)
3551                 change = true;
3552
3553         if (change)
3554                 err = cfg80211_change_iface(rdev, dev, ntype, &params);
3555         else
3556                 err = 0;
3557
3558         if (!err && params.use_4addr != -1)
3559                 dev->ieee80211_ptr->use_4addr = params.use_4addr;
3560
3561         if (change && !err) {
3562                 struct wireless_dev *wdev = dev->ieee80211_ptr;
3563
3564                 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE);
3565         }
3566
3567         return err;
3568 }
3569
3570 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
3571 {
3572         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3573         struct vif_params params;
3574         struct wireless_dev *wdev;
3575         struct sk_buff *msg;
3576         int err;
3577         enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED;
3578
3579         /* to avoid failing a new interface creation due to pending removal */
3580         cfg80211_destroy_ifaces(rdev);
3581
3582         memset(&params, 0, sizeof(params));
3583
3584         if (!info->attrs[NL80211_ATTR_IFNAME])
3585                 return -EINVAL;
3586
3587         if (info->attrs[NL80211_ATTR_IFTYPE])
3588                 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]);
3589
3590         if (!rdev->ops->add_virtual_intf)
3591                 return -EOPNOTSUPP;
3592
3593         if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN ||
3594              rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) &&
3595             info->attrs[NL80211_ATTR_MAC]) {
3596                 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC],
3597                            ETH_ALEN);
3598                 if (!is_valid_ether_addr(params.macaddr))
3599                         return -EADDRNOTAVAIL;
3600         }
3601
3602         if (info->attrs[NL80211_ATTR_4ADDR]) {
3603                 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]);
3604                 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type);
3605                 if (err)
3606                         return err;
3607         }
3608
3609         if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
3610                 return -EOPNOTSUPP;
3611
3612         err = nl80211_parse_mon_options(rdev, type, info, &params);
3613         if (err < 0)
3614                 return err;
3615
3616         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3617         if (!msg)
3618                 return -ENOMEM;
3619
3620         wdev = rdev_add_virtual_intf(rdev,
3621                                 nla_data(info->attrs[NL80211_ATTR_IFNAME]),
3622                                 NET_NAME_USER, type, &params);
3623         if (WARN_ON(!wdev)) {
3624                 nlmsg_free(msg);
3625                 return -EPROTO;
3626         } else if (IS_ERR(wdev)) {
3627                 nlmsg_free(msg);
3628                 return PTR_ERR(wdev);
3629         }
3630
3631         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
3632                 wdev->owner_nlportid = info->snd_portid;
3633
3634         switch (type) {
3635         case NL80211_IFTYPE_MESH_POINT:
3636                 if (!info->attrs[NL80211_ATTR_MESH_ID])
3637                         break;
3638                 wdev_lock(wdev);
3639                 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN !=
3640                              IEEE80211_MAX_MESH_ID_LEN);
3641                 wdev->mesh_id_up_len =
3642                         nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
3643                 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]),
3644                        wdev->mesh_id_up_len);
3645                 wdev_unlock(wdev);
3646                 break;
3647         case NL80211_IFTYPE_NAN:
3648         case NL80211_IFTYPE_P2P_DEVICE:
3649                 /*
3650                  * P2P Device and NAN do not have a netdev, so don't go
3651                  * through the netdev notifier and must be added here
3652                  */
3653                 cfg80211_init_wdev(rdev, wdev);
3654                 break;
3655         default:
3656                 break;
3657         }
3658
3659         if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0,
3660                                rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) {
3661                 nlmsg_free(msg);
3662                 return -ENOBUFS;
3663         }
3664
3665         return genlmsg_reply(msg, info);
3666 }
3667
3668 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
3669 {
3670         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3671         struct wireless_dev *wdev = info->user_ptr[1];
3672
3673         if (!rdev->ops->del_virtual_intf)
3674                 return -EOPNOTSUPP;
3675
3676         /*
3677          * If we remove a wireless device without a netdev then clear
3678          * user_ptr[1] so that nl80211_post_doit won't dereference it
3679          * to check if it needs to do dev_put(). Otherwise it crashes
3680          * since the wdev has been freed, unlike with a netdev where
3681          * we need the dev_put() for the netdev to really be freed.
3682          */
3683         if (!wdev->netdev)
3684                 info->user_ptr[1] = NULL;
3685
3686         return rdev_del_virtual_intf(rdev, wdev);
3687 }
3688
3689 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info)
3690 {
3691         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3692         struct net_device *dev = info->user_ptr[1];
3693         u16 noack_map;
3694
3695         if (!info->attrs[NL80211_ATTR_NOACK_MAP])
3696                 return -EINVAL;
3697
3698         if (!rdev->ops->set_noack_map)
3699                 return -EOPNOTSUPP;
3700
3701         noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]);
3702
3703         return rdev_set_noack_map(rdev, dev, noack_map);
3704 }
3705
3706 struct get_key_cookie {
3707         struct sk_buff *msg;
3708         int error;
3709         int idx;
3710 };
3711
3712 static void get_key_callback(void *c, struct key_params *params)
3713 {
3714         struct nlattr *key;
3715         struct get_key_cookie *cookie = c;
3716
3717         if ((params->key &&
3718              nla_put(cookie->msg, NL80211_ATTR_KEY_DATA,
3719                      params->key_len, params->key)) ||
3720             (params->seq &&
3721              nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ,
3722                      params->seq_len, params->seq)) ||
3723             (params->cipher &&
3724              nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER,
3725                          params->cipher)))
3726                 goto nla_put_failure;
3727
3728         key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY);
3729         if (!key)
3730                 goto nla_put_failure;
3731
3732         if ((params->key &&
3733              nla_put(cookie->msg, NL80211_KEY_DATA,
3734                      params->key_len, params->key)) ||
3735             (params->seq &&
3736              nla_put(cookie->msg, NL80211_KEY_SEQ,
3737                      params->seq_len, params->seq)) ||
3738             (params->cipher &&
3739              nla_put_u32(cookie->msg, NL80211_KEY_CIPHER,
3740                          params->cipher)))
3741                 goto nla_put_failure;
3742
3743         if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx))
3744                 goto nla_put_failure;
3745
3746         nla_nest_end(cookie->msg, key);
3747
3748         return;
3749  nla_put_failure:
3750         cookie->error = 1;
3751 }
3752
3753 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info)
3754 {
3755         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3756         int err;
3757         struct net_device *dev = info->user_ptr[1];
3758         u8 key_idx = 0;
3759         const u8 *mac_addr = NULL;
3760         bool pairwise;
3761         struct get_key_cookie cookie = {
3762                 .error = 0,
3763         };
3764         void *hdr;
3765         struct sk_buff *msg;
3766
3767         if (info->attrs[NL80211_ATTR_KEY_IDX])
3768                 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]);
3769
3770         if (info->attrs[NL80211_ATTR_MAC])
3771                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3772
3773         pairwise = !!mac_addr;
3774         if (info->attrs[NL80211_ATTR_KEY_TYPE]) {
3775                 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]);
3776
3777                 if (kt != NL80211_KEYTYPE_GROUP &&
3778                     kt != NL80211_KEYTYPE_PAIRWISE)
3779                         return -EINVAL;
3780                 pairwise = kt == NL80211_KEYTYPE_PAIRWISE;
3781         }
3782
3783         if (!rdev->ops->get_key)
3784                 return -EOPNOTSUPP;
3785
3786         if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
3787                 return -ENOENT;
3788
3789         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
3790         if (!msg)
3791                 return -ENOMEM;
3792
3793         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
3794                              NL80211_CMD_NEW_KEY);
3795         if (!hdr)
3796                 goto nla_put_failure;
3797
3798         cookie.msg = msg;
3799         cookie.idx = key_idx;
3800
3801         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
3802             nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx))
3803                 goto nla_put_failure;
3804         if (mac_addr &&
3805             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr))
3806                 goto nla_put_failure;
3807
3808         err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie,
3809                            get_key_callback);
3810
3811         if (err)
3812                 goto free_msg;
3813
3814         if (cookie.error)
3815                 goto nla_put_failure;
3816
3817         genlmsg_end(msg, hdr);
3818         return genlmsg_reply(msg, info);
3819
3820  nla_put_failure:
3821         err = -ENOBUFS;
3822  free_msg:
3823         nlmsg_free(msg);
3824         return err;
3825 }
3826
3827 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info)
3828 {
3829         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3830         struct key_parse key;
3831         int err;
3832         struct net_device *dev = info->user_ptr[1];
3833
3834         err = nl80211_parse_key(info, &key);
3835         if (err)
3836                 return err;
3837
3838         if (key.idx < 0)
3839                 return -EINVAL;
3840
3841         /* Only support setting default key and
3842          * Extended Key ID action NL80211_KEY_SET_TX.
3843          */
3844         if (!key.def && !key.defmgmt &&
3845             !(key.p.mode == NL80211_KEY_SET_TX))
3846                 return -EINVAL;
3847
3848         wdev_lock(dev->ieee80211_ptr);
3849
3850         if (key.def) {
3851                 if (!rdev->ops->set_default_key) {
3852                         err = -EOPNOTSUPP;
3853                         goto out;
3854                 }
3855
3856                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3857                 if (err)
3858                         goto out;
3859
3860                 err = rdev_set_default_key(rdev, dev, key.idx,
3861                                                  key.def_uni, key.def_multi);
3862
3863                 if (err)
3864                         goto out;
3865
3866 #ifdef CONFIG_CFG80211_WEXT
3867                 dev->ieee80211_ptr->wext.default_key = key.idx;
3868 #endif
3869         } else if (key.defmgmt) {
3870                 if (key.def_uni || !key.def_multi) {
3871                         err = -EINVAL;
3872                         goto out;
3873                 }
3874
3875                 if (!rdev->ops->set_default_mgmt_key) {
3876                         err = -EOPNOTSUPP;
3877                         goto out;
3878                 }
3879
3880                 err = nl80211_key_allowed(dev->ieee80211_ptr);
3881                 if (err)
3882                         goto out;
3883
3884                 err = rdev_set_default_mgmt_key(rdev, dev, key.idx);
3885                 if (err)
3886                         goto out;
3887
3888 #ifdef CONFIG_CFG80211_WEXT
3889                 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx;
3890 #endif
3891         } else if (key.p.mode == NL80211_KEY_SET_TX &&
3892                    wiphy_ext_feature_isset(&rdev->wiphy,
3893                                            NL80211_EXT_FEATURE_EXT_KEY_ID)) {
3894                 u8 *mac_addr = NULL;
3895
3896                 if (info->attrs[NL80211_ATTR_MAC])
3897                         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3898
3899                 if (!mac_addr || key.idx < 0 || key.idx > 1) {
3900                         err = -EINVAL;
3901                         goto out;
3902                 }
3903
3904                 err = rdev_add_key(rdev, dev, key.idx,
3905                                    NL80211_KEYTYPE_PAIRWISE,
3906                                    mac_addr, &key.p);
3907         } else {
3908                 err = -EINVAL;
3909         }
3910  out:
3911         wdev_unlock(dev->ieee80211_ptr);
3912
3913         return err;
3914 }
3915
3916 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info)
3917 {
3918         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3919         int err;
3920         struct net_device *dev = info->user_ptr[1];
3921         struct key_parse key;
3922         const u8 *mac_addr = NULL;
3923
3924         err = nl80211_parse_key(info, &key);
3925         if (err)
3926                 return err;
3927
3928         if (!key.p.key)
3929                 return -EINVAL;
3930
3931         if (info->attrs[NL80211_ATTR_MAC])
3932                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3933
3934         if (key.type == -1) {
3935                 if (mac_addr)
3936                         key.type = NL80211_KEYTYPE_PAIRWISE;
3937                 else
3938                         key.type = NL80211_KEYTYPE_GROUP;
3939         }
3940
3941         /* for now */
3942         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3943             key.type != NL80211_KEYTYPE_GROUP)
3944                 return -EINVAL;
3945
3946         if (key.type == NL80211_KEYTYPE_GROUP &&
3947             info->attrs[NL80211_ATTR_VLAN_ID])
3948                 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
3949
3950         if (!rdev->ops->add_key)
3951                 return -EOPNOTSUPP;
3952
3953         if (cfg80211_validate_key_settings(rdev, &key.p, key.idx,
3954                                            key.type == NL80211_KEYTYPE_PAIRWISE,
3955                                            mac_addr))
3956                 return -EINVAL;
3957
3958         wdev_lock(dev->ieee80211_ptr);
3959         err = nl80211_key_allowed(dev->ieee80211_ptr);
3960         if (!err)
3961                 err = rdev_add_key(rdev, dev, key.idx,
3962                                    key.type == NL80211_KEYTYPE_PAIRWISE,
3963                                     mac_addr, &key.p);
3964         wdev_unlock(dev->ieee80211_ptr);
3965
3966         return err;
3967 }
3968
3969 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info)
3970 {
3971         struct cfg80211_registered_device *rdev = info->user_ptr[0];
3972         int err;
3973         struct net_device *dev = info->user_ptr[1];
3974         u8 *mac_addr = NULL;
3975         struct key_parse key;
3976
3977         err = nl80211_parse_key(info, &key);
3978         if (err)
3979                 return err;
3980
3981         if (info->attrs[NL80211_ATTR_MAC])
3982                 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
3983
3984         if (key.type == -1) {
3985                 if (mac_addr)
3986                         key.type = NL80211_KEYTYPE_PAIRWISE;
3987                 else
3988                         key.type = NL80211_KEYTYPE_GROUP;
3989         }
3990
3991         /* for now */
3992         if (key.type != NL80211_KEYTYPE_PAIRWISE &&
3993             key.type != NL80211_KEYTYPE_GROUP)
3994                 return -EINVAL;
3995
3996         if (!rdev->ops->del_key)
3997                 return -EOPNOTSUPP;
3998
3999         wdev_lock(dev->ieee80211_ptr);
4000         err = nl80211_key_allowed(dev->ieee80211_ptr);
4001
4002         if (key.type == NL80211_KEYTYPE_GROUP && mac_addr &&
4003             !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN))
4004                 err = -ENOENT;
4005
4006         if (!err)
4007                 err = rdev_del_key(rdev, dev, key.idx,
4008                                    key.type == NL80211_KEYTYPE_PAIRWISE,
4009                                    mac_addr);
4010
4011 #ifdef CONFIG_CFG80211_WEXT
4012         if (!err) {
4013                 if (key.idx == dev->ieee80211_ptr->wext.default_key)
4014                         dev->ieee80211_ptr->wext.default_key = -1;
4015                 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key)
4016                         dev->ieee80211_ptr->wext.default_mgmt_key = -1;
4017         }
4018 #endif
4019         wdev_unlock(dev->ieee80211_ptr);
4020
4021         return err;
4022 }
4023
4024 /* This function returns an error or the number of nested attributes */
4025 static int validate_acl_mac_addrs(struct nlattr *nl_attr)
4026 {
4027         struct nlattr *attr;
4028         int n_entries = 0, tmp;
4029
4030         nla_for_each_nested(attr, nl_attr, tmp) {
4031                 if (nla_len(attr) != ETH_ALEN)
4032                         return -EINVAL;
4033
4034                 n_entries++;
4035         }
4036
4037         return n_entries;
4038 }
4039
4040 /*
4041  * This function parses ACL information and allocates memory for ACL data.
4042  * On successful return, the calling function is responsible to free the
4043  * ACL buffer returned by this function.
4044  */
4045 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy,
4046                                                 struct genl_info *info)
4047 {
4048         enum nl80211_acl_policy acl_policy;
4049         struct nlattr *attr;
4050         struct cfg80211_acl_data *acl;
4051         int i = 0, n_entries, tmp;
4052
4053         if (!wiphy->max_acl_mac_addrs)
4054                 return ERR_PTR(-EOPNOTSUPP);
4055
4056         if (!info->attrs[NL80211_ATTR_ACL_POLICY])
4057                 return ERR_PTR(-EINVAL);
4058
4059         acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]);
4060         if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED &&
4061             acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED)
4062                 return ERR_PTR(-EINVAL);
4063
4064         if (!info->attrs[NL80211_ATTR_MAC_ADDRS])
4065                 return ERR_PTR(-EINVAL);
4066
4067         n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]);
4068         if (n_entries < 0)
4069                 return ERR_PTR(n_entries);
4070
4071         if (n_entries > wiphy->max_acl_mac_addrs)
4072                 return ERR_PTR(-ENOTSUPP);
4073
4074         acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL);
4075         if (!acl)
4076                 return ERR_PTR(-ENOMEM);
4077
4078         nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) {
4079                 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN);
4080                 i++;
4081         }
4082
4083         acl->n_acl_entries = n_entries;
4084         acl->acl_policy = acl_policy;
4085
4086         return acl;
4087 }
4088
4089 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info)
4090 {
4091         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4092         struct net_device *dev = info->user_ptr[1];
4093         struct cfg80211_acl_data *acl;
4094         int err;
4095
4096         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4097             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4098                 return -EOPNOTSUPP;
4099
4100         if (!dev->ieee80211_ptr->beacon_interval)
4101                 return -EINVAL;
4102
4103         acl = parse_acl_data(&rdev->wiphy, info);
4104         if (IS_ERR(acl))
4105                 return PTR_ERR(acl);
4106
4107         err = rdev_set_mac_acl(rdev, dev, acl);
4108
4109         kfree(acl);
4110
4111         return err;
4112 }
4113
4114 static u32 rateset_to_mask(struct ieee80211_supported_band *sband,
4115                            u8 *rates, u8 rates_len)
4116 {
4117         u8 i;
4118         u32 mask = 0;
4119
4120         for (i = 0; i < rates_len; i++) {
4121                 int rate = (rates[i] & 0x7f) * 5;
4122                 int ridx;
4123
4124                 for (ridx = 0; ridx < sband->n_bitrates; ridx++) {
4125                         struct ieee80211_rate *srate =
4126                                 &sband->bitrates[ridx];
4127                         if (rate == srate->bitrate) {
4128                                 mask |= 1 << ridx;
4129                                 break;
4130                         }
4131                 }
4132                 if (ridx == sband->n_bitrates)
4133                         return 0; /* rate not found */
4134         }
4135
4136         return mask;
4137 }
4138
4139 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband,
4140                                u8 *rates, u8 rates_len,
4141                                u8 mcs[IEEE80211_HT_MCS_MASK_LEN])
4142 {
4143         u8 i;
4144
4145         memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN);
4146
4147         for (i = 0; i < rates_len; i++) {
4148                 int ridx, rbit;
4149
4150                 ridx = rates[i] / 8;
4151                 rbit = BIT(rates[i] % 8);
4152
4153                 /* check validity */
4154                 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN))
4155                         return false;
4156
4157                 /* check availability */
4158                 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN);
4159                 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit)
4160                         mcs[ridx] |= rbit;
4161                 else
4162                         return false;
4163         }
4164
4165         return true;
4166 }
4167
4168 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map)
4169 {
4170         u16 mcs_mask = 0;
4171
4172         switch (vht_mcs_map) {
4173         case IEEE80211_VHT_MCS_NOT_SUPPORTED:
4174                 break;
4175         case IEEE80211_VHT_MCS_SUPPORT_0_7:
4176                 mcs_mask = 0x00FF;
4177                 break;
4178         case IEEE80211_VHT_MCS_SUPPORT_0_8:
4179                 mcs_mask = 0x01FF;
4180                 break;
4181         case IEEE80211_VHT_MCS_SUPPORT_0_9:
4182                 mcs_mask = 0x03FF;
4183                 break;
4184         default:
4185                 break;
4186         }
4187
4188         return mcs_mask;
4189 }
4190
4191 static void vht_build_mcs_mask(u16 vht_mcs_map,
4192                                u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
4193 {
4194         u8 nss;
4195
4196         for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) {
4197                 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03);
4198                 vht_mcs_map >>= 2;
4199         }
4200 }
4201
4202 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
4203                              struct nl80211_txrate_vht *txrate,
4204                              u16 mcs[NL80211_VHT_NSS_MAX])
4205 {
4206         u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4207         u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {};
4208         u8 i;
4209
4210         if (!sband->vht_cap.vht_supported)
4211                 return false;
4212
4213         memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX);
4214
4215         /* Build vht_mcs_mask from VHT capabilities */
4216         vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask);
4217
4218         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4219                 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i])
4220                         mcs[i] = txrate->mcs[i];
4221                 else
4222                         return false;
4223         }
4224
4225         return true;
4226 }
4227
4228 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
4229         [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
4230                                     .len = NL80211_MAX_SUPP_RATES },
4231         [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
4232                                 .len = NL80211_MAX_SUPP_HT_RATES },
4233         [NL80211_TXRATE_VHT] = {
4234                 .type = NLA_EXACT_LEN_WARN,
4235                 .len = sizeof(struct nl80211_txrate_vht),
4236         },
4237         [NL80211_TXRATE_GI] = { .type = NLA_U8 },
4238 };
4239
4240 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
4241                                          struct cfg80211_bitrate_mask *mask)
4242 {
4243         struct nlattr *tb[NL80211_TXRATE_MAX + 1];
4244         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4245         int rem, i;
4246         struct nlattr *tx_rates;
4247         struct ieee80211_supported_band *sband;
4248         u16 vht_tx_mcs_map;
4249
4250         memset(mask, 0, sizeof(*mask));
4251         /* Default to all rates enabled */
4252         for (i = 0; i < NUM_NL80211_BANDS; i++) {
4253                 sband = rdev->wiphy.bands[i];
4254
4255                 if (!sband)
4256                         continue;
4257
4258                 mask->control[i].legacy = (1 << sband->n_bitrates) - 1;
4259                 memcpy(mask->control[i].ht_mcs,
4260                        sband->ht_cap.mcs.rx_mask,
4261                        sizeof(mask->control[i].ht_mcs));
4262
4263                 if (!sband->vht_cap.vht_supported)
4264                         continue;
4265
4266                 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
4267                 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs);
4268         }
4269
4270         /* if no rates are given set it back to the defaults */
4271         if (!info->attrs[NL80211_ATTR_TX_RATES])
4272                 goto out;
4273
4274         /* The nested attribute uses enum nl80211_band as the index. This maps
4275          * directly to the enum nl80211_band values used in cfg80211.
4276          */
4277         BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
4278         nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
4279                 enum nl80211_band band = nla_type(tx_rates);
4280                 int err;
4281
4282                 if (band < 0 || band >= NUM_NL80211_BANDS)
4283                         return -EINVAL;
4284                 sband = rdev->wiphy.bands[band];
4285                 if (sband == NULL)
4286                         return -EINVAL;
4287                 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX,
4288                                                   tx_rates,
4289                                                   nl80211_txattr_policy,
4290                                                   info->extack);
4291                 if (err)
4292                         return err;
4293                 if (tb[NL80211_TXRATE_LEGACY]) {
4294                         mask->control[band].legacy = rateset_to_mask(
4295                                 sband,
4296                                 nla_data(tb[NL80211_TXRATE_LEGACY]),
4297                                 nla_len(tb[NL80211_TXRATE_LEGACY]));
4298                         if ((mask->control[band].legacy == 0) &&
4299                             nla_len(tb[NL80211_TXRATE_LEGACY]))
4300                                 return -EINVAL;
4301                 }
4302                 if (tb[NL80211_TXRATE_HT]) {
4303                         if (!ht_rateset_to_mask(
4304                                         sband,
4305                                         nla_data(tb[NL80211_TXRATE_HT]),
4306                                         nla_len(tb[NL80211_TXRATE_HT]),
4307                                         mask->control[band].ht_mcs))
4308                                 return -EINVAL;
4309                 }
4310                 if (tb[NL80211_TXRATE_VHT]) {
4311                         if (!vht_set_mcs_mask(
4312                                         sband,
4313                                         nla_data(tb[NL80211_TXRATE_VHT]),
4314                                         mask->control[band].vht_mcs))
4315                                 return -EINVAL;
4316                 }
4317                 if (tb[NL80211_TXRATE_GI]) {
4318                         mask->control[band].gi =
4319                                 nla_get_u8(tb[NL80211_TXRATE_GI]);
4320                         if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI)
4321                                 return -EINVAL;
4322                 }
4323
4324                 if (mask->control[band].legacy == 0) {
4325                         /* don't allow empty legacy rates if HT or VHT
4326                          * are not even supported.
4327                          */
4328                         if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported ||
4329                               rdev->wiphy.bands[band]->vht_cap.vht_supported))
4330                                 return -EINVAL;
4331
4332                         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
4333                                 if (mask->control[band].ht_mcs[i])
4334                                         goto out;
4335
4336                         for (i = 0; i < NL80211_VHT_NSS_MAX; i++)
4337                                 if (mask->control[band].vht_mcs[i])
4338                                         goto out;
4339
4340                         /* legacy and mcs rates may not be both empty */
4341                         return -EINVAL;
4342                 }
4343         }
4344
4345 out:
4346         return 0;
4347 }
4348
4349 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev,
4350                                    enum nl80211_band band,
4351                                    struct cfg80211_bitrate_mask *beacon_rate)
4352 {
4353         u32 count_ht, count_vht, i;
4354         u32 rate = beacon_rate->control[band].legacy;
4355
4356         /* Allow only one rate */
4357         if (hweight32(rate) > 1)
4358                 return -EINVAL;
4359
4360         count_ht = 0;
4361         for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) {
4362                 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) {
4363                         return -EINVAL;
4364                 } else if (beacon_rate->control[band].ht_mcs[i]) {
4365                         count_ht++;
4366                         if (count_ht > 1)
4367                                 return -EINVAL;
4368                 }
4369                 if (count_ht && rate)
4370                         return -EINVAL;
4371         }
4372
4373         count_vht = 0;
4374         for (i = 0; i < NL80211_VHT_NSS_MAX; i++) {
4375                 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) {
4376                         return -EINVAL;
4377                 } else if (beacon_rate->control[band].vht_mcs[i]) {
4378                         count_vht++;
4379                         if (count_vht > 1)
4380                                 return -EINVAL;
4381                 }
4382                 if (count_vht && rate)
4383                         return -EINVAL;
4384         }
4385
4386         if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht))
4387                 return -EINVAL;
4388
4389         if (rate &&
4390             !wiphy_ext_feature_isset(&rdev->wiphy,
4391                                      NL80211_EXT_FEATURE_BEACON_RATE_LEGACY))
4392                 return -EINVAL;
4393         if (count_ht &&
4394             !wiphy_ext_feature_isset(&rdev->wiphy,
4395                                      NL80211_EXT_FEATURE_BEACON_RATE_HT))
4396                 return -EINVAL;
4397         if (count_vht &&
4398             !wiphy_ext_feature_isset(&rdev->wiphy,
4399                                      NL80211_EXT_FEATURE_BEACON_RATE_VHT))
4400                 return -EINVAL;
4401
4402         return 0;
4403 }
4404
4405 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev,
4406                                 struct nlattr *attrs[],
4407                                 struct cfg80211_beacon_data *bcn)
4408 {
4409         bool haveinfo = false;
4410         int err;
4411
4412         memset(bcn, 0, sizeof(*bcn));
4413
4414         if (attrs[NL80211_ATTR_BEACON_HEAD]) {
4415                 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]);
4416                 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]);
4417                 if (!bcn->head_len)
4418                         return -EINVAL;
4419                 haveinfo = true;
4420         }
4421
4422         if (attrs[NL80211_ATTR_BEACON_TAIL]) {
4423                 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]);
4424                 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]);
4425                 haveinfo = true;
4426         }
4427
4428         if (!haveinfo)
4429                 return -EINVAL;
4430
4431         if (attrs[NL80211_ATTR_IE]) {
4432                 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]);
4433                 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]);
4434         }
4435
4436         if (attrs[NL80211_ATTR_IE_PROBE_RESP]) {
4437                 bcn->proberesp_ies =
4438                         nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4439                 bcn->proberesp_ies_len =
4440                         nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]);
4441         }
4442
4443         if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) {
4444                 bcn->assocresp_ies =
4445                         nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4446                 bcn->assocresp_ies_len =
4447                         nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]);
4448         }
4449
4450         if (attrs[NL80211_ATTR_PROBE_RESP]) {
4451                 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]);
4452                 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]);
4453         }
4454
4455         if (attrs[NL80211_ATTR_FTM_RESPONDER]) {
4456                 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1];
4457
4458                 err = nla_parse_nested_deprecated(tb,
4459                                                   NL80211_FTM_RESP_ATTR_MAX,
4460                                                   attrs[NL80211_ATTR_FTM_RESPONDER],
4461                                                   NULL, NULL);
4462                 if (err)
4463                         return err;
4464
4465                 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] &&
4466                     wiphy_ext_feature_isset(&rdev->wiphy,
4467                                             NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER))
4468                         bcn->ftm_responder = 1;
4469                 else
4470                         return -EOPNOTSUPP;
4471
4472                 if (tb[NL80211_FTM_RESP_ATTR_LCI]) {
4473                         bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]);
4474                         bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]);
4475                 }
4476
4477                 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) {
4478                         bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4479                         bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]);
4480                 }
4481         } else {
4482                 bcn->ftm_responder = -1;
4483         }
4484
4485         return 0;
4486 }
4487
4488 static int nl80211_parse_he_obss_pd(struct nlattr *attrs,
4489                                     struct ieee80211_he_obss_pd *he_obss_pd)
4490 {
4491         struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1];
4492         int err;
4493
4494         err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs,
4495                                he_obss_pd_policy, NULL);
4496         if (err)
4497                 return err;
4498
4499         if (!tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] ||
4500             !tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET])
4501                 return -EINVAL;
4502
4503         he_obss_pd->min_offset =
4504                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]);
4505         he_obss_pd->max_offset =
4506                 nla_get_u32(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]);
4507
4508         if (he_obss_pd->min_offset >= he_obss_pd->max_offset)
4509                 return -EINVAL;
4510
4511         he_obss_pd->enable = true;
4512
4513         return 0;
4514 }
4515
4516 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params,
4517                                             const u8 *rates)
4518 {
4519         int i;
4520
4521         if (!rates)
4522                 return;
4523
4524         for (i = 0; i < rates[1]; i++) {
4525                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY)
4526                         params->ht_required = true;
4527                 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY)
4528                         params->vht_required = true;
4529         }
4530 }
4531
4532 /*
4533  * Since the nl80211 API didn't include, from the beginning, attributes about
4534  * HT/VHT requirements/capabilities, we parse them out of the IEs for the
4535  * benefit of drivers that rebuild IEs in the firmware.
4536  */
4537 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params)
4538 {
4539         const struct cfg80211_beacon_data *bcn = &params->beacon;
4540         size_t ies_len = bcn->tail_len;
4541         const u8 *ies = bcn->tail;
4542         const u8 *rates;
4543         const u8 *cap;
4544
4545         rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len);
4546         nl80211_check_ap_rate_selectors(params, rates);
4547
4548         rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len);
4549         nl80211_check_ap_rate_selectors(params, rates);
4550
4551         cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len);
4552         if (cap && cap[1] >= sizeof(*params->ht_cap))
4553                 params->ht_cap = (void *)(cap + 2);
4554         cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len);
4555         if (cap && cap[1] >= sizeof(*params->vht_cap))
4556                 params->vht_cap = (void *)(cap + 2);
4557         cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len);
4558         if (cap && cap[1] >= sizeof(*params->he_cap) + 1)
4559                 params->he_cap = (void *)(cap + 3);
4560 }
4561
4562 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev,
4563                                    struct cfg80211_ap_settings *params)
4564 {
4565         struct wireless_dev *wdev;
4566         bool ret = false;
4567
4568         list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
4569                 if (wdev->iftype != NL80211_IFTYPE_AP &&
4570                     wdev->iftype != NL80211_IFTYPE_P2P_GO)
4571                         continue;
4572
4573                 if (!wdev->preset_chandef.chan)
4574                         continue;
4575
4576                 params->chandef = wdev->preset_chandef;
4577                 ret = true;
4578                 break;
4579         }
4580
4581         return ret;
4582 }
4583
4584 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev,
4585                                     enum nl80211_auth_type auth_type,
4586                                     enum nl80211_commands cmd)
4587 {
4588         if (auth_type > NL80211_AUTHTYPE_MAX)
4589                 return false;
4590
4591         switch (cmd) {
4592         case NL80211_CMD_AUTHENTICATE:
4593                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4594                     auth_type == NL80211_AUTHTYPE_SAE)
4595                         return false;
4596                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
4597                                              NL80211_EXT_FEATURE_FILS_STA) &&
4598                     (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4599                      auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4600                      auth_type == NL80211_AUTHTYPE_FILS_PK))
4601                         return false;
4602                 return true;
4603         case NL80211_CMD_CONNECT:
4604                 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) &&
4605                     !wiphy_ext_feature_isset(&rdev->wiphy,
4606                                              NL80211_EXT_FEATURE_SAE_OFFLOAD) &&
4607                     auth_type == NL80211_AUTHTYPE_SAE)
4608                         return false;
4609
4610                 /* FILS with SK PFS or PK not supported yet */
4611                 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4612                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4613                         return false;
4614                 if (!wiphy_ext_feature_isset(
4615                             &rdev->wiphy,
4616                             NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
4617                     auth_type == NL80211_AUTHTYPE_FILS_SK)
4618                         return false;
4619                 return true;
4620         case NL80211_CMD_START_AP:
4621                 /* SAE not supported yet */
4622                 if (auth_type == NL80211_AUTHTYPE_SAE)
4623                         return false;
4624                 /* FILS not supported yet */
4625                 if (auth_type == NL80211_AUTHTYPE_FILS_SK ||
4626                     auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
4627                     auth_type == NL80211_AUTHTYPE_FILS_PK)
4628                         return false;
4629                 return true;
4630         default:
4631                 return false;
4632         }
4633 }
4634
4635 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
4636 {
4637         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4638         struct net_device *dev = info->user_ptr[1];
4639         struct wireless_dev *wdev = dev->ieee80211_ptr;
4640         struct cfg80211_ap_settings params;
4641         int err;
4642
4643         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4644             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4645                 return -EOPNOTSUPP;
4646
4647         if (!rdev->ops->start_ap)
4648                 return -EOPNOTSUPP;
4649
4650         if (wdev->beacon_interval)
4651                 return -EALREADY;
4652
4653         memset(&params, 0, sizeof(params));
4654
4655         /* these are required for START_AP */
4656         if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] ||
4657             !info->attrs[NL80211_ATTR_DTIM_PERIOD] ||
4658             !info->attrs[NL80211_ATTR_BEACON_HEAD])
4659                 return -EINVAL;
4660
4661         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon);
4662         if (err)
4663                 return err;
4664
4665         params.beacon_interval =
4666                 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
4667         params.dtim_period =
4668                 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
4669
4670         err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype,
4671                                            params.beacon_interval);
4672         if (err)
4673                 return err;
4674
4675         /*
4676          * In theory, some of these attributes should be required here
4677          * but since they were not used when the command was originally
4678          * added, keep them optional for old user space programs to let
4679          * them continue to work with drivers that do not need the
4680          * additional information -- drivers must check!
4681          */
4682         if (info->attrs[NL80211_ATTR_SSID]) {
4683                 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
4684                 params.ssid_len =
4685                         nla_len(info->attrs[NL80211_ATTR_SSID]);
4686                 if (params.ssid_len == 0 ||
4687                     params.ssid_len > IEEE80211_MAX_SSID_LEN)
4688                         return -EINVAL;
4689         }
4690
4691         if (info->attrs[NL80211_ATTR_HIDDEN_SSID])
4692                 params.hidden_ssid = nla_get_u32(
4693                         info->attrs[NL80211_ATTR_HIDDEN_SSID]);
4694
4695         params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
4696
4697         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
4698                 params.auth_type = nla_get_u32(
4699                         info->attrs[NL80211_ATTR_AUTH_TYPE]);
4700                 if (!nl80211_valid_auth_type(rdev, params.auth_type,
4701                                              NL80211_CMD_START_AP))
4702                         return -EINVAL;
4703         } else
4704                 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
4705
4706         err = nl80211_crypto_settings(rdev, info, &params.crypto,
4707                                       NL80211_MAX_NR_CIPHER_SUITES);
4708         if (err)
4709                 return err;
4710
4711         if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) {
4712                 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER))
4713                         return -EOPNOTSUPP;
4714                 params.inactivity_timeout = nla_get_u16(
4715                         info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]);
4716         }
4717
4718         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
4719                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4720                         return -EINVAL;
4721                 params.p2p_ctwindow =
4722                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
4723                 if (params.p2p_ctwindow != 0 &&
4724                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
4725                         return -EINVAL;
4726         }
4727
4728         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
4729                 u8 tmp;
4730
4731                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4732                         return -EINVAL;
4733                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
4734                 params.p2p_opp_ps = tmp;
4735                 if (params.p2p_opp_ps != 0 &&
4736                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
4737                         return -EINVAL;
4738         }
4739
4740         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
4741                 err = nl80211_parse_chandef(rdev, info, &params.chandef);
4742                 if (err)
4743                         return err;
4744         } else if (wdev->preset_chandef.chan) {
4745                 params.chandef = wdev->preset_chandef;
4746         } else if (!nl80211_get_ap_channel(rdev, &params))
4747                 return -EINVAL;
4748
4749         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
4750                                            wdev->iftype))
4751                 return -EINVAL;
4752
4753         if (info->attrs[NL80211_ATTR_TX_RATES]) {
4754                 err = nl80211_parse_tx_bitrate_mask(info, &params.beacon_rate);
4755                 if (err)
4756                         return err;
4757
4758                 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band,
4759                                               &params.beacon_rate);
4760                 if (err)
4761                         return err;
4762         }
4763
4764         if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
4765                 params.smps_mode =
4766                         nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]);
4767                 switch (params.smps_mode) {
4768                 case NL80211_SMPS_OFF:
4769                         break;
4770                 case NL80211_SMPS_STATIC:
4771                         if (!(rdev->wiphy.features &
4772                               NL80211_FEATURE_STATIC_SMPS))
4773                                 return -EINVAL;
4774                         break;
4775                 case NL80211_SMPS_DYNAMIC:
4776                         if (!(rdev->wiphy.features &
4777                               NL80211_FEATURE_DYNAMIC_SMPS))
4778                                 return -EINVAL;
4779                         break;
4780                 default:
4781                         return -EINVAL;
4782                 }
4783         } else {
4784                 params.smps_mode = NL80211_SMPS_OFF;
4785         }
4786
4787         params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
4788         if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ])
4789                 return -EOPNOTSUPP;
4790
4791         if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
4792                 params.acl = parse_acl_data(&rdev->wiphy, info);
4793                 if (IS_ERR(params.acl))
4794                         return PTR_ERR(params.acl);
4795         }
4796
4797         params.twt_responder =
4798                     nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]);
4799
4800         if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) {
4801                 err = nl80211_parse_he_obss_pd(
4802                                         info->attrs[NL80211_ATTR_HE_OBSS_PD],
4803                                         &params.he_obss_pd);
4804                 goto out;
4805         }
4806
4807         nl80211_calculate_ap_params(&params);
4808
4809         if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
4810                 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
4811
4812         wdev_lock(wdev);
4813         err = rdev_start_ap(rdev, dev, &params);
4814         if (!err) {
4815                 wdev->preset_chandef = params.chandef;
4816                 wdev->beacon_interval = params.beacon_interval;
4817                 wdev->chandef = params.chandef;
4818                 wdev->ssid_len = params.ssid_len;
4819                 memcpy(wdev->ssid, params.ssid, wdev->ssid_len);
4820
4821                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
4822                         wdev->conn_owner_nlportid = info->snd_portid;
4823         }
4824         wdev_unlock(wdev);
4825
4826 out:
4827         kfree(params.acl);
4828
4829         return err;
4830 }
4831
4832 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info)
4833 {
4834         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4835         struct net_device *dev = info->user_ptr[1];
4836         struct wireless_dev *wdev = dev->ieee80211_ptr;
4837         struct cfg80211_beacon_data params;
4838         int err;
4839
4840         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
4841             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
4842                 return -EOPNOTSUPP;
4843
4844         if (!rdev->ops->change_beacon)
4845                 return -EOPNOTSUPP;
4846
4847         if (!wdev->beacon_interval)
4848                 return -EINVAL;
4849
4850         err = nl80211_parse_beacon(rdev, info->attrs, &params);
4851         if (err)
4852                 return err;
4853
4854         wdev_lock(wdev);
4855         err = rdev_change_beacon(rdev, dev, &params);
4856         wdev_unlock(wdev);
4857
4858         return err;
4859 }
4860
4861 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info)
4862 {
4863         struct cfg80211_registered_device *rdev = info->user_ptr[0];
4864         struct net_device *dev = info->user_ptr[1];
4865
4866         return cfg80211_stop_ap(rdev, dev, false);
4867 }
4868
4869 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = {
4870         [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG },
4871         [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG },
4872         [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG },
4873         [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG },
4874         [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG },
4875         [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG },
4876 };
4877
4878 static int parse_station_flags(struct genl_info *info,
4879                                enum nl80211_iftype iftype,
4880                                struct station_parameters *params)
4881 {
4882         struct nlattr *flags[NL80211_STA_FLAG_MAX + 1];
4883         struct nlattr *nla;
4884         int flag;
4885
4886         /*
4887          * Try parsing the new attribute first so userspace
4888          * can specify both for older kernels.
4889          */
4890         nla = info->attrs[NL80211_ATTR_STA_FLAGS2];
4891         if (nla) {
4892                 struct nl80211_sta_flag_update *sta_flags;
4893
4894                 sta_flags = nla_data(nla);
4895                 params->sta_flags_mask = sta_flags->mask;
4896                 params->sta_flags_set = sta_flags->set;
4897                 params->sta_flags_set &= params->sta_flags_mask;
4898                 if ((params->sta_flags_mask |
4899                      params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID))
4900                         return -EINVAL;
4901                 return 0;
4902         }
4903
4904         /* if present, parse the old attribute */
4905
4906         nla = info->attrs[NL80211_ATTR_STA_FLAGS];
4907         if (!nla)
4908                 return 0;
4909
4910         if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack))
4911                 return -EINVAL;
4912
4913         /*
4914          * Only allow certain flags for interface types so that
4915          * other attributes are silently ignored. Remember that
4916          * this is backward compatibility code with old userspace
4917          * and shouldn't be hit in other cases anyway.
4918          */
4919         switch (iftype) {
4920         case NL80211_IFTYPE_AP:
4921         case NL80211_IFTYPE_AP_VLAN:
4922         case NL80211_IFTYPE_P2P_GO:
4923                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4924                                          BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
4925                                          BIT(NL80211_STA_FLAG_WME) |
4926                                          BIT(NL80211_STA_FLAG_MFP);
4927                 break;
4928         case NL80211_IFTYPE_P2P_CLIENT:
4929         case NL80211_IFTYPE_STATION:
4930                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
4931                                          BIT(NL80211_STA_FLAG_TDLS_PEER);
4932                 break;
4933         case NL80211_IFTYPE_MESH_POINT:
4934                 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
4935                                          BIT(NL80211_STA_FLAG_MFP) |
4936                                          BIT(NL80211_STA_FLAG_AUTHORIZED);
4937                 break;
4938         default:
4939                 return -EINVAL;
4940         }
4941
4942         for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) {
4943                 if (flags[flag]) {
4944                         params->sta_flags_set |= (1<<flag);
4945
4946                         /* no longer support new API additions in old API */
4947                         if (flag > NL80211_STA_FLAG_MAX_OLD_API)
4948                                 return -EINVAL;
4949                 }
4950         }
4951
4952         return 0;
4953 }
4954
4955 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr)
4956 {
4957         struct nlattr *rate;
4958         u32 bitrate;
4959         u16 bitrate_compat;
4960         enum nl80211_rate_info rate_flg;
4961
4962         rate = nla_nest_start_noflag(msg, attr);
4963         if (!rate)
4964                 return false;
4965
4966         /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */
4967         bitrate = cfg80211_calculate_bitrate(info);
4968         /* report 16-bit bitrate only if we can */
4969         bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0;
4970         if (bitrate > 0 &&
4971             nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate))
4972                 return false;
4973         if (bitrate_compat > 0 &&
4974             nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat))
4975                 return false;
4976
4977         switch (info->bw) {
4978         case RATE_INFO_BW_5:
4979                 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH;
4980                 break;
4981         case RATE_INFO_BW_10:
4982                 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH;
4983                 break;
4984         default:
4985                 WARN_ON(1);
4986                 /* fall through */
4987         case RATE_INFO_BW_20:
4988                 rate_flg = 0;
4989                 break;
4990         case RATE_INFO_BW_40:
4991                 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH;
4992                 break;
4993         case RATE_INFO_BW_80:
4994                 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH;
4995                 break;
4996         case RATE_INFO_BW_160:
4997                 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH;
4998                 break;
4999         case RATE_INFO_BW_HE_RU:
5000                 rate_flg = 0;
5001                 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS));
5002         }
5003
5004         if (rate_flg && nla_put_flag(msg, rate_flg))
5005                 return false;
5006
5007         if (info->flags & RATE_INFO_FLAGS_MCS) {
5008                 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs))
5009                         return false;
5010                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5011                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5012                         return false;
5013         } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) {
5014                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs))
5015                         return false;
5016                 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss))
5017                         return false;
5018                 if (info->flags & RATE_INFO_FLAGS_SHORT_GI &&
5019                     nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI))
5020                         return false;
5021         } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) {
5022                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs))
5023                         return false;
5024                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss))
5025                         return false;
5026                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi))
5027                         return false;
5028                 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm))
5029                         return false;
5030                 if (info->bw == RATE_INFO_BW_HE_RU &&
5031                     nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC,
5032                                info->he_ru_alloc))
5033                         return false;
5034         }
5035
5036         nla_nest_end(msg, rate);
5037         return true;
5038 }
5039
5040 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal,
5041                                int id)
5042 {
5043         void *attr;
5044         int i = 0;
5045
5046         if (!mask)
5047                 return true;
5048
5049         attr = nla_nest_start_noflag(msg, id);
5050         if (!attr)
5051                 return false;
5052
5053         for (i = 0; i < IEEE80211_MAX_CHAINS; i++) {
5054                 if (!(mask & BIT(i)))
5055                         continue;
5056
5057                 if (nla_put_u8(msg, i, signal[i]))
5058                         return false;
5059         }
5060
5061         nla_nest_end(msg, attr);
5062
5063         return true;
5064 }
5065
5066 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid,
5067                                 u32 seq, int flags,
5068                                 struct cfg80211_registered_device *rdev,
5069                                 struct net_device *dev,
5070                                 const u8 *mac_addr, struct station_info *sinfo)
5071 {
5072         void *hdr;
5073         struct nlattr *sinfoattr, *bss_param;
5074
5075         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
5076         if (!hdr) {
5077                 cfg80211_sinfo_release_content(sinfo);
5078                 return -1;
5079         }
5080
5081         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
5082             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
5083             nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation))
5084                 goto nla_put_failure;
5085
5086         sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO);
5087         if (!sinfoattr)
5088                 goto nla_put_failure;
5089
5090 #define PUT_SINFO(attr, memb, type) do {                                \
5091         BUILD_BUG_ON(sizeof(type) == sizeof(u64));                      \
5092         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5093             nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr,            \
5094                              sinfo->memb))                              \
5095                 goto nla_put_failure;                                   \
5096         } while (0)
5097 #define PUT_SINFO_U64(attr, memb) do {                                  \
5098         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) &&       \
5099             nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr,           \
5100                               sinfo->memb, NL80211_STA_INFO_PAD))       \
5101                 goto nla_put_failure;                                   \
5102         } while (0)
5103
5104         PUT_SINFO(CONNECTED_TIME, connected_time, u32);
5105         PUT_SINFO(INACTIVE_TIME, inactive_time, u32);
5106         PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at);
5107
5108         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
5109                              BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) &&
5110             nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES,
5111                         (u32)sinfo->rx_bytes))
5112                 goto nla_put_failure;
5113
5114         if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
5115                              BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) &&
5116             nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES,
5117                         (u32)sinfo->tx_bytes))
5118                 goto nla_put_failure;
5119
5120         PUT_SINFO_U64(RX_BYTES64, rx_bytes);
5121         PUT_SINFO_U64(TX_BYTES64, tx_bytes);
5122         PUT_SINFO(LLID, llid, u16);
5123         PUT_SINFO(PLID, plid, u16);
5124         PUT_SINFO(PLINK_STATE, plink_state, u8);
5125         PUT_SINFO_U64(RX_DURATION, rx_duration);
5126         PUT_SINFO_U64(TX_DURATION, tx_duration);
5127
5128         if (wiphy_ext_feature_isset(&rdev->wiphy,
5129                                     NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5130                 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16);
5131
5132         switch (rdev->wiphy.signal_type) {
5133         case CFG80211_SIGNAL_TYPE_MBM:
5134                 PUT_SINFO(SIGNAL, signal, u8);
5135                 PUT_SINFO(SIGNAL_AVG, signal_avg, u8);
5136                 break;
5137         default:
5138                 break;
5139         }
5140         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) {
5141                 if (!nl80211_put_signal(msg, sinfo->chains,
5142                                         sinfo->chain_signal,
5143                                         NL80211_STA_INFO_CHAIN_SIGNAL))
5144                         goto nla_put_failure;
5145         }
5146         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) {
5147                 if (!nl80211_put_signal(msg, sinfo->chains,
5148                                         sinfo->chain_signal_avg,
5149                                         NL80211_STA_INFO_CHAIN_SIGNAL_AVG))
5150                         goto nla_put_failure;
5151         }
5152         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) {
5153                 if (!nl80211_put_sta_rate(msg, &sinfo->txrate,
5154                                           NL80211_STA_INFO_TX_BITRATE))
5155                         goto nla_put_failure;
5156         }
5157         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) {
5158                 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate,
5159                                           NL80211_STA_INFO_RX_BITRATE))
5160                         goto nla_put_failure;
5161         }
5162
5163         PUT_SINFO(RX_PACKETS, rx_packets, u32);
5164         PUT_SINFO(TX_PACKETS, tx_packets, u32);
5165         PUT_SINFO(TX_RETRIES, tx_retries, u32);
5166         PUT_SINFO(TX_FAILED, tx_failed, u32);
5167         PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32);
5168         PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32);
5169         PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32);
5170         PUT_SINFO(LOCAL_PM, local_pm, u32);
5171         PUT_SINFO(PEER_PM, peer_pm, u32);
5172         PUT_SINFO(NONPEER_PM, nonpeer_pm, u32);
5173         PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8);
5174
5175         if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) {
5176                 bss_param = nla_nest_start_noflag(msg,
5177                                                   NL80211_STA_INFO_BSS_PARAM);
5178                 if (!bss_param)
5179                         goto nla_put_failure;
5180
5181                 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) &&
5182                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) ||
5183                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) &&
5184                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) ||
5185                     ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) &&
5186                      nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) ||
5187                     nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
5188                                sinfo->bss_param.dtim_period) ||
5189                     nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
5190                                 sinfo->bss_param.beacon_interval))
5191                         goto nla_put_failure;
5192
5193                 nla_nest_end(msg, bss_param);
5194         }
5195         if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) &&
5196             nla_put(msg, NL80211_STA_INFO_STA_FLAGS,
5197                     sizeof(struct nl80211_sta_flag_update),
5198                     &sinfo->sta_flags))
5199                 goto nla_put_failure;
5200
5201         PUT_SINFO_U64(T_OFFSET, t_offset);
5202         PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc);
5203         PUT_SINFO_U64(BEACON_RX, rx_beacon);
5204         PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8);
5205         PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32);
5206         PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32);
5207         if (wiphy_ext_feature_isset(&rdev->wiphy,
5208                                     NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) {
5209                 PUT_SINFO(ACK_SIGNAL, ack_signal, u8);
5210                 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8);
5211         }
5212
5213 #undef PUT_SINFO
5214 #undef PUT_SINFO_U64
5215
5216         if (sinfo->pertid) {
5217                 struct nlattr *tidsattr;
5218                 int tid;
5219
5220                 tidsattr = nla_nest_start_noflag(msg,
5221                                                  NL80211_STA_INFO_TID_STATS);
5222                 if (!tidsattr)
5223                         goto nla_put_failure;
5224
5225                 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) {
5226                         struct cfg80211_tid_stats *tidstats;
5227                         struct nlattr *tidattr;
5228
5229                         tidstats = &sinfo->pertid[tid];
5230
5231                         if (!tidstats->filled)
5232                                 continue;
5233
5234                         tidattr = nla_nest_start_noflag(msg, tid + 1);
5235                         if (!tidattr)
5236                                 goto nla_put_failure;
5237
5238 #define PUT_TIDVAL_U64(attr, memb) do {                                 \
5239         if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) &&       \
5240             nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr,          \
5241                               tidstats->memb, NL80211_TID_STATS_PAD))   \
5242                 goto nla_put_failure;                                   \
5243         } while (0)
5244
5245                         PUT_TIDVAL_U64(RX_MSDU, rx_msdu);
5246                         PUT_TIDVAL_U64(TX_MSDU, tx_msdu);
5247                         PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries);
5248                         PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed);
5249
5250 #undef PUT_TIDVAL_U64
5251                         if ((tidstats->filled &
5252                              BIT(NL80211_TID_STATS_TXQ_STATS)) &&
5253                             !nl80211_put_txq_stats(msg, &tidstats->txq_stats,
5254                                                    NL80211_TID_STATS_TXQ_STATS))
5255                                 goto nla_put_failure;
5256
5257                         nla_nest_end(msg, tidattr);
5258                 }
5259
5260                 nla_nest_end(msg, tidsattr);
5261         }
5262
5263         nla_nest_end(msg, sinfoattr);
5264
5265         if (sinfo->assoc_req_ies_len &&
5266             nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len,
5267                     sinfo->assoc_req_ies))
5268                 goto nla_put_failure;
5269
5270         cfg80211_sinfo_release_content(sinfo);
5271         genlmsg_end(msg, hdr);
5272         return 0;
5273
5274  nla_put_failure:
5275         cfg80211_sinfo_release_content(sinfo);
5276         genlmsg_cancel(msg, hdr);
5277         return -EMSGSIZE;
5278 }
5279
5280 static int nl80211_dump_station(struct sk_buff *skb,
5281                                 struct netlink_callback *cb)
5282 {
5283         struct station_info sinfo;
5284         struct cfg80211_registered_device *rdev;
5285         struct wireless_dev *wdev;
5286         u8 mac_addr[ETH_ALEN];
5287         int sta_idx = cb->args[2];
5288         int err;
5289
5290         rtnl_lock();
5291         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
5292         if (err)
5293                 goto out_err;
5294
5295         if (!wdev->netdev) {
5296                 err = -EINVAL;
5297                 goto out_err;
5298         }
5299
5300         if (!rdev->ops->dump_station) {
5301                 err = -EOPNOTSUPP;
5302                 goto out_err;
5303         }
5304
5305         while (1) {
5306                 memset(&sinfo, 0, sizeof(sinfo));
5307                 err = rdev_dump_station(rdev, wdev->netdev, sta_idx,
5308                                         mac_addr, &sinfo);
5309                 if (err == -ENOENT)
5310                         break;
5311                 if (err)
5312                         goto out_err;
5313
5314                 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION,
5315                                 NETLINK_CB(cb->skb).portid,
5316                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
5317                                 rdev, wdev->netdev, mac_addr,
5318                                 &sinfo) < 0)
5319                         goto out;
5320
5321                 sta_idx++;
5322         }
5323
5324  out:
5325         cb->args[2] = sta_idx;
5326         err = skb->len;
5327  out_err:
5328         rtnl_unlock();
5329
5330         return err;
5331 }
5332
5333 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info)
5334 {
5335         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5336         struct net_device *dev = info->user_ptr[1];
5337         struct station_info sinfo;
5338         struct sk_buff *msg;
5339         u8 *mac_addr = NULL;
5340         int err;
5341
5342         memset(&sinfo, 0, sizeof(sinfo));
5343
5344         if (!info->attrs[NL80211_ATTR_MAC])
5345                 return -EINVAL;
5346
5347         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5348
5349         if (!rdev->ops->get_station)
5350                 return -EOPNOTSUPP;
5351
5352         err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
5353         if (err)
5354                 return err;
5355
5356         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
5357         if (!msg) {
5358                 cfg80211_sinfo_release_content(&sinfo);
5359                 return -ENOMEM;
5360         }
5361
5362         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION,
5363                                  info->snd_portid, info->snd_seq, 0,
5364                                  rdev, dev, mac_addr, &sinfo) < 0) {
5365                 nlmsg_free(msg);
5366                 return -ENOBUFS;
5367         }
5368
5369         return genlmsg_reply(msg, info);
5370 }
5371
5372 int cfg80211_check_station_change(struct wiphy *wiphy,
5373                                   struct station_parameters *params,
5374                                   enum cfg80211_station_type statype)
5375 {
5376         if (params->listen_interval != -1 &&
5377             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5378                 return -EINVAL;
5379
5380         if (params->support_p2p_ps != -1 &&
5381             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5382                 return -EINVAL;
5383
5384         if (params->aid &&
5385             !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) &&
5386             statype != CFG80211_STA_AP_CLIENT_UNASSOC)
5387                 return -EINVAL;
5388
5389         /* When you run into this, adjust the code below for the new flag */
5390         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5391
5392         switch (statype) {
5393         case CFG80211_STA_MESH_PEER_KERNEL:
5394         case CFG80211_STA_MESH_PEER_USER:
5395                 /*
5396                  * No ignoring the TDLS flag here -- the userspace mesh
5397                  * code doesn't have the bug of including TDLS in the
5398                  * mask everywhere.
5399                  */
5400                 if (params->sta_flags_mask &
5401                                 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5402                                   BIT(NL80211_STA_FLAG_MFP) |
5403                                   BIT(NL80211_STA_FLAG_AUTHORIZED)))
5404                         return -EINVAL;
5405                 break;
5406         case CFG80211_STA_TDLS_PEER_SETUP:
5407         case CFG80211_STA_TDLS_PEER_ACTIVE:
5408                 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
5409                         return -EINVAL;
5410                 /* ignore since it can't change */
5411                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5412                 break;
5413         default:
5414                 /* disallow mesh-specific things */
5415                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION)
5416                         return -EINVAL;
5417                 if (params->local_pm)
5418                         return -EINVAL;
5419                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5420                         return -EINVAL;
5421         }
5422
5423         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5424             statype != CFG80211_STA_TDLS_PEER_ACTIVE) {
5425                 /* TDLS can't be set, ... */
5426                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
5427                         return -EINVAL;
5428                 /*
5429                  * ... but don't bother the driver with it. This works around
5430                  * a hostapd/wpa_supplicant issue -- it always includes the
5431                  * TLDS_PEER flag in the mask even for AP mode.
5432                  */
5433                 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5434         }
5435
5436         if (statype != CFG80211_STA_TDLS_PEER_SETUP &&
5437             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5438                 /* reject other things that can't change */
5439                 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD)
5440                         return -EINVAL;
5441                 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY)
5442                         return -EINVAL;
5443                 if (params->supported_rates)
5444                         return -EINVAL;
5445                 if (params->ext_capab || params->ht_capa || params->vht_capa ||
5446                     params->he_capa)
5447                         return -EINVAL;
5448         }
5449
5450         if (statype != CFG80211_STA_AP_CLIENT &&
5451             statype != CFG80211_STA_AP_CLIENT_UNASSOC) {
5452                 if (params->vlan)
5453                         return -EINVAL;
5454         }
5455
5456         switch (statype) {
5457         case CFG80211_STA_AP_MLME_CLIENT:
5458                 /* Use this only for authorizing/unauthorizing a station */
5459                 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
5460                         return -EOPNOTSUPP;
5461                 break;
5462         case CFG80211_STA_AP_CLIENT:
5463         case CFG80211_STA_AP_CLIENT_UNASSOC:
5464                 /* accept only the listed bits */
5465                 if (params->sta_flags_mask &
5466                                 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5467                                   BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5468                                   BIT(NL80211_STA_FLAG_ASSOCIATED) |
5469                                   BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
5470                                   BIT(NL80211_STA_FLAG_WME) |
5471                                   BIT(NL80211_STA_FLAG_MFP)))
5472                         return -EINVAL;
5473
5474                 /* but authenticated/associated only if driver handles it */
5475                 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5476                     params->sta_flags_mask &
5477                                 (BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5478                                  BIT(NL80211_STA_FLAG_ASSOCIATED)))
5479                         return -EINVAL;
5480                 break;
5481         case CFG80211_STA_IBSS:
5482         case CFG80211_STA_AP_STA:
5483                 /* reject any changes other than AUTHORIZED */
5484                 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED))
5485                         return -EINVAL;
5486                 break;
5487         case CFG80211_STA_TDLS_PEER_SETUP:
5488                 /* reject any changes other than AUTHORIZED or WME */
5489                 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) |
5490                                                BIT(NL80211_STA_FLAG_WME)))
5491                         return -EINVAL;
5492                 /* force (at least) rates when authorizing */
5493                 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) &&
5494                     !params->supported_rates)
5495                         return -EINVAL;
5496                 break;
5497         case CFG80211_STA_TDLS_PEER_ACTIVE:
5498                 /* reject any changes */
5499                 return -EINVAL;
5500         case CFG80211_STA_MESH_PEER_KERNEL:
5501                 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE)
5502                         return -EINVAL;
5503                 break;
5504         case CFG80211_STA_MESH_PEER_USER:
5505                 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION &&
5506                     params->plink_action != NL80211_PLINK_ACTION_BLOCK)
5507                         return -EINVAL;
5508                 break;
5509         }
5510
5511         /*
5512          * Older kernel versions ignored this attribute entirely, so don't
5513          * reject attempts to update it but mark it as unused instead so the
5514          * driver won't look at the data.
5515          */
5516         if (statype != CFG80211_STA_AP_CLIENT_UNASSOC &&
5517             statype != CFG80211_STA_TDLS_PEER_SETUP)
5518                 params->opmode_notif_used = false;
5519
5520         return 0;
5521 }
5522 EXPORT_SYMBOL(cfg80211_check_station_change);
5523
5524 /*
5525  * Get vlan interface making sure it is running and on the right wiphy.
5526  */
5527 static struct net_device *get_vlan(struct genl_info *info,
5528                                    struct cfg80211_registered_device *rdev)
5529 {
5530         struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN];
5531         struct net_device *v;
5532         int ret;
5533
5534         if (!vlanattr)
5535                 return NULL;
5536
5537         v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr));
5538         if (!v)
5539                 return ERR_PTR(-ENODEV);
5540
5541         if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) {
5542                 ret = -EINVAL;
5543                 goto error;
5544         }
5545
5546         if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
5547             v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
5548             v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
5549                 ret = -EINVAL;
5550                 goto error;
5551         }
5552
5553         if (!netif_running(v)) {
5554                 ret = -ENETDOWN;
5555                 goto error;
5556         }
5557
5558         return v;
5559  error:
5560         dev_put(v);
5561         return ERR_PTR(ret);
5562 }
5563
5564 static const struct nla_policy
5565 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = {
5566         [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 },
5567         [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 },
5568 };
5569
5570 static int nl80211_parse_sta_wme(struct genl_info *info,
5571                                  struct station_parameters *params)
5572 {
5573         struct nlattr *tb[NL80211_STA_WME_MAX + 1];
5574         struct nlattr *nla;
5575         int err;
5576
5577         /* parse WME attributes if present */
5578         if (!info->attrs[NL80211_ATTR_STA_WME])
5579                 return 0;
5580
5581         nla = info->attrs[NL80211_ATTR_STA_WME];
5582         err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla,
5583                                           nl80211_sta_wme_policy,
5584                                           info->extack);
5585         if (err)
5586                 return err;
5587
5588         if (tb[NL80211_STA_WME_UAPSD_QUEUES])
5589                 params->uapsd_queues = nla_get_u8(
5590                         tb[NL80211_STA_WME_UAPSD_QUEUES]);
5591         if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK)
5592                 return -EINVAL;
5593
5594         if (tb[NL80211_STA_WME_MAX_SP])
5595                 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]);
5596
5597         if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK)
5598                 return -EINVAL;
5599
5600         params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD;
5601
5602         return 0;
5603 }
5604
5605 static int nl80211_parse_sta_channel_info(struct genl_info *info,
5606                                       struct station_parameters *params)
5607 {
5608         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) {
5609                 params->supported_channels =
5610                      nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5611                 params->supported_channels_len =
5612                      nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]);
5613                 /*
5614                  * Need to include at least one (first channel, number of
5615                  * channels) tuple for each subband, and must have proper
5616                  * tuples for the rest of the data as well.
5617                  */
5618                 if (params->supported_channels_len < 2)
5619                         return -EINVAL;
5620                 if (params->supported_channels_len % 2)
5621                         return -EINVAL;
5622         }
5623
5624         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) {
5625                 params->supported_oper_classes =
5626                  nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5627                 params->supported_oper_classes_len =
5628                   nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]);
5629                 /*
5630                  * The value of the Length field of the Supported Operating
5631                  * Classes element is between 2 and 253.
5632                  */
5633                 if (params->supported_oper_classes_len < 2 ||
5634                     params->supported_oper_classes_len > 253)
5635                         return -EINVAL;
5636         }
5637         return 0;
5638 }
5639
5640 static int nl80211_set_station_tdls(struct genl_info *info,
5641                                     struct station_parameters *params)
5642 {
5643         int err;
5644         /* Dummy STA entry gets updated once the peer capabilities are known */
5645         if (info->attrs[NL80211_ATTR_PEER_AID])
5646                 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5647         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5648                 params->ht_capa =
5649                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5650         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5651                 params->vht_capa =
5652                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5653         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5654                 params->he_capa =
5655                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5656                 params->he_capa_len =
5657                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5658
5659                 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5660                         return -EINVAL;
5661         }
5662
5663         err = nl80211_parse_sta_channel_info(info, params);
5664         if (err)
5665                 return err;
5666
5667         return nl80211_parse_sta_wme(info, params);
5668 }
5669
5670 static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
5671                                              struct station_parameters *params)
5672 {
5673         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5674         int idx;
5675
5676         if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
5677                 if (!rdev->ops->set_tx_power ||
5678                     !wiphy_ext_feature_isset(&rdev->wiphy,
5679                                          NL80211_EXT_FEATURE_STA_TX_PWR))
5680                         return -EOPNOTSUPP;
5681
5682                 idx = NL80211_ATTR_STA_TX_POWER_SETTING;
5683                 params->txpwr.type = nla_get_u8(info->attrs[idx]);
5684
5685                 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
5686                         idx = NL80211_ATTR_STA_TX_POWER;
5687
5688                         if (info->attrs[idx])
5689                                 params->txpwr.power =
5690                                         nla_get_s16(info->attrs[idx]);
5691                         else
5692                                 return -EINVAL;
5693                 }
5694                 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
5695         }
5696
5697         return 0;
5698 }
5699
5700 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
5701 {
5702         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5703         struct net_device *dev = info->user_ptr[1];
5704         struct station_parameters params;
5705         u8 *mac_addr;
5706         int err;
5707
5708         memset(&params, 0, sizeof(params));
5709
5710         if (!rdev->ops->change_station)
5711                 return -EOPNOTSUPP;
5712
5713         /*
5714          * AID and listen_interval properties can be set only for unassociated
5715          * station. Include these parameters here and will check them in
5716          * cfg80211_check_station_change().
5717          */
5718         if (info->attrs[NL80211_ATTR_STA_AID])
5719                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5720
5721         if (info->attrs[NL80211_ATTR_VLAN_ID])
5722                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5723
5724         if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5725                 params.listen_interval =
5726                      nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5727         else
5728                 params.listen_interval = -1;
5729
5730         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS])
5731                 params.support_p2p_ps =
5732                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5733         else
5734                 params.support_p2p_ps = -1;
5735
5736         if (!info->attrs[NL80211_ATTR_MAC])
5737                 return -EINVAL;
5738
5739         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5740
5741         if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) {
5742                 params.supported_rates =
5743                         nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5744                 params.supported_rates_len =
5745                         nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5746         }
5747
5748         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5749                 params.capability =
5750                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5751                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5752         }
5753
5754         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5755                 params.ext_capab =
5756                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5757                 params.ext_capab_len =
5758                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5759         }
5760
5761         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5762                 return -EINVAL;
5763
5764         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5765                 params.plink_action =
5766                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5767
5768         if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) {
5769                 params.plink_state =
5770                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]);
5771                 if (info->attrs[NL80211_ATTR_MESH_PEER_AID])
5772                         params.peer_aid = nla_get_u16(
5773                                 info->attrs[NL80211_ATTR_MESH_PEER_AID]);
5774                 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE;
5775         }
5776
5777         if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE])
5778                 params.local_pm = nla_get_u32(
5779                         info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]);
5780
5781         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5782                 params.opmode_notif_used = true;
5783                 params.opmode_notif =
5784                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5785         }
5786
5787         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5788                 params.airtime_weight =
5789                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5790
5791         if (params.airtime_weight &&
5792             !wiphy_ext_feature_isset(&rdev->wiphy,
5793                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5794                 return -EOPNOTSUPP;
5795
5796         err = nl80211_parse_sta_txpower_setting(info, &params);
5797         if (err)
5798                 return err;
5799
5800         /* Include parameters for TDLS peer (will check later) */
5801         err = nl80211_set_station_tdls(info, &params);
5802         if (err)
5803                 return err;
5804
5805         params.vlan = get_vlan(info, rdev);
5806         if (IS_ERR(params.vlan))
5807                 return PTR_ERR(params.vlan);
5808
5809         switch (dev->ieee80211_ptr->iftype) {
5810         case NL80211_IFTYPE_AP:
5811         case NL80211_IFTYPE_AP_VLAN:
5812         case NL80211_IFTYPE_P2P_GO:
5813         case NL80211_IFTYPE_P2P_CLIENT:
5814         case NL80211_IFTYPE_STATION:
5815         case NL80211_IFTYPE_ADHOC:
5816         case NL80211_IFTYPE_MESH_POINT:
5817                 break;
5818         default:
5819                 err = -EOPNOTSUPP;
5820                 goto out_put_vlan;
5821         }
5822
5823         /* driver will call cfg80211_check_station_change() */
5824         err = rdev_change_station(rdev, dev, mac_addr, &params);
5825
5826  out_put_vlan:
5827         if (params.vlan)
5828                 dev_put(params.vlan);
5829
5830         return err;
5831 }
5832
5833 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
5834 {
5835         struct cfg80211_registered_device *rdev = info->user_ptr[0];
5836         int err;
5837         struct net_device *dev = info->user_ptr[1];
5838         struct station_parameters params;
5839         u8 *mac_addr = NULL;
5840         u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) |
5841                          BIT(NL80211_STA_FLAG_ASSOCIATED);
5842
5843         memset(&params, 0, sizeof(params));
5844
5845         if (!rdev->ops->add_station)
5846                 return -EOPNOTSUPP;
5847
5848         if (!info->attrs[NL80211_ATTR_MAC])
5849                 return -EINVAL;
5850
5851         if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL])
5852                 return -EINVAL;
5853
5854         if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES])
5855                 return -EINVAL;
5856
5857         if (!info->attrs[NL80211_ATTR_STA_AID] &&
5858             !info->attrs[NL80211_ATTR_PEER_AID])
5859                 return -EINVAL;
5860
5861         mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
5862         params.supported_rates =
5863                 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5864         params.supported_rates_len =
5865                 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]);
5866         params.listen_interval =
5867                 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]);
5868
5869         if (info->attrs[NL80211_ATTR_VLAN_ID])
5870                 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]);
5871
5872         if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) {
5873                 params.support_p2p_ps =
5874                         nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]);
5875         } else {
5876                 /*
5877                  * if not specified, assume it's supported for P2P GO interface,
5878                  * and is NOT supported for AP interface
5879                  */
5880                 params.support_p2p_ps =
5881                         dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO;
5882         }
5883
5884         if (info->attrs[NL80211_ATTR_PEER_AID])
5885                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]);
5886         else
5887                 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]);
5888
5889         if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) {
5890                 params.capability =
5891                         nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]);
5892                 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY;
5893         }
5894
5895         if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) {
5896                 params.ext_capab =
5897                         nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5898                 params.ext_capab_len =
5899                         nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]);
5900         }
5901
5902         if (info->attrs[NL80211_ATTR_HT_CAPABILITY])
5903                 params.ht_capa =
5904                         nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]);
5905
5906         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY])
5907                 params.vht_capa =
5908                         nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]);
5909
5910         if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) {
5911                 params.he_capa =
5912                         nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5913                 params.he_capa_len =
5914                         nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]);
5915
5916                 /* max len is validated in nla policy */
5917                 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN)
5918                         return -EINVAL;
5919         }
5920
5921         if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) {
5922                 params.opmode_notif_used = true;
5923                 params.opmode_notif =
5924                         nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]);
5925         }
5926
5927         if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION])
5928                 params.plink_action =
5929                         nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]);
5930
5931         if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT])
5932                 params.airtime_weight =
5933                         nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]);
5934
5935         if (params.airtime_weight &&
5936             !wiphy_ext_feature_isset(&rdev->wiphy,
5937                                      NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
5938                 return -EOPNOTSUPP;
5939
5940         err = nl80211_parse_sta_txpower_setting(info, &params);
5941         if (err)
5942                 return err;
5943
5944         err = nl80211_parse_sta_channel_info(info, &params);
5945         if (err)
5946                 return err;
5947
5948         err = nl80211_parse_sta_wme(info, &params);
5949         if (err)
5950                 return err;
5951
5952         if (parse_station_flags(info, dev->ieee80211_ptr->iftype, &params))
5953                 return -EINVAL;
5954
5955         /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT
5956          * as userspace might just pass through the capabilities from the IEs
5957          * directly, rather than enforcing this restriction and returning an
5958          * error in this case.
5959          */
5960         if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) {
5961                 params.ht_capa = NULL;
5962                 params.vht_capa = NULL;
5963
5964                 /* HE requires WME */
5965                 if (params.he_capa_len)
5966                         return -EINVAL;
5967         }
5968
5969         /* When you run into this, adjust the code below for the new flag */
5970         BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7);
5971
5972         switch (dev->ieee80211_ptr->iftype) {
5973         case NL80211_IFTYPE_AP:
5974         case NL80211_IFTYPE_AP_VLAN:
5975         case NL80211_IFTYPE_P2P_GO:
5976                 /* ignore WME attributes if iface/sta is not capable */
5977                 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) ||
5978                     !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME)))
5979                         params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
5980
5981                 /* TDLS peers cannot be added */
5982                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
5983                     info->attrs[NL80211_ATTR_PEER_AID])
5984                         return -EINVAL;
5985                 /* but don't bother the driver with it */
5986                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
5987
5988                 /* allow authenticated/associated only if driver handles it */
5989                 if (!(rdev->wiphy.features &
5990                                 NL80211_FEATURE_FULL_AP_CLIENT_STATE) &&
5991                     params.sta_flags_mask & auth_assoc)
5992                         return -EINVAL;
5993
5994                 /* Older userspace, or userspace wanting to be compatible with
5995                  * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth
5996                  * and assoc flags in the mask, but assumes the station will be
5997                  * added as associated anyway since this was the required driver
5998                  * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was
5999                  * introduced.
6000                  * In order to not bother drivers with this quirk in the API
6001                  * set the flags in both the mask and set for new stations in
6002                  * this case.
6003                  */
6004                 if (!(params.sta_flags_mask & auth_assoc)) {
6005                         params.sta_flags_mask |= auth_assoc;
6006                         params.sta_flags_set |= auth_assoc;
6007                 }
6008
6009                 /* must be last in here for error handling */
6010                 params.vlan = get_vlan(info, rdev);
6011                 if (IS_ERR(params.vlan))
6012                         return PTR_ERR(params.vlan);
6013                 break;
6014         case NL80211_IFTYPE_MESH_POINT:
6015                 /* ignore uAPSD data */
6016                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6017
6018                 /* associated is disallowed */
6019                 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED))
6020                         return -EINVAL;
6021                 /* TDLS peers cannot be added */
6022                 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) ||
6023                     info->attrs[NL80211_ATTR_PEER_AID])
6024                         return -EINVAL;
6025                 break;
6026         case NL80211_IFTYPE_STATION:
6027         case NL80211_IFTYPE_P2P_CLIENT:
6028                 /* ignore uAPSD data */
6029                 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD;
6030
6031                 /* these are disallowed */
6032                 if (params.sta_flags_mask &
6033                                 (BIT(NL80211_STA_FLAG_ASSOCIATED) |
6034                                  BIT(NL80211_STA_FLAG_AUTHENTICATED)))
6035                         return -EINVAL;
6036                 /* Only TDLS peers can be added */
6037                 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)))
6038                         return -EINVAL;
6039                 /* Can only add if TDLS ... */
6040                 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS))
6041                         return -EOPNOTSUPP;
6042                 /* ... with external setup is supported */
6043                 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP))
6044                         return -EOPNOTSUPP;
6045                 /*
6046                  * Older wpa_supplicant versions always mark the TDLS peer
6047                  * as authorized, but it shouldn't yet be.
6048                  */
6049                 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED);
6050                 break;
6051         default:
6052                 return -EOPNOTSUPP;
6053         }
6054
6055         /* be aware of params.vlan when changing code here */
6056
6057         err = rdev_add_station(rdev, dev, mac_addr, &params);
6058
6059         if (params.vlan)
6060                 dev_put(params.vlan);
6061         return err;
6062 }
6063
6064 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info)
6065 {
6066         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6067         struct net_device *dev = info->user_ptr[1];
6068         struct station_del_parameters params;
6069
6070         memset(&params, 0, sizeof(params));
6071
6072         if (info->attrs[NL80211_ATTR_MAC])
6073                 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]);
6074
6075         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6076             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN &&
6077             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
6078             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6079                 return -EINVAL;
6080
6081         if (!rdev->ops->del_station)
6082                 return -EOPNOTSUPP;
6083
6084         if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) {
6085                 params.subtype =
6086                         nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]);
6087                 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 &&
6088                     params.subtype != IEEE80211_STYPE_DEAUTH >> 4)
6089                         return -EINVAL;
6090         } else {
6091                 /* Default to Deauthentication frame */
6092                 params.subtype = IEEE80211_STYPE_DEAUTH >> 4;
6093         }
6094
6095         if (info->attrs[NL80211_ATTR_REASON_CODE]) {
6096                 params.reason_code =
6097                         nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
6098                 if (params.reason_code == 0)
6099                         return -EINVAL; /* 0 is reserved */
6100         } else {
6101                 /* Default to reason code 2 */
6102                 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID;
6103         }
6104
6105         return rdev_del_station(rdev, dev, &params);
6106 }
6107
6108 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq,
6109                                 int flags, struct net_device *dev,
6110                                 u8 *dst, u8 *next_hop,
6111                                 struct mpath_info *pinfo)
6112 {
6113         void *hdr;
6114         struct nlattr *pinfoattr;
6115
6116         hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH);
6117         if (!hdr)
6118                 return -1;
6119
6120         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6121             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) ||
6122             nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) ||
6123             nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation))
6124                 goto nla_put_failure;
6125
6126         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO);
6127         if (!pinfoattr)
6128                 goto nla_put_failure;
6129         if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) &&
6130             nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN,
6131                         pinfo->frame_qlen))
6132                 goto nla_put_failure;
6133         if (((pinfo->filled & MPATH_INFO_SN) &&
6134              nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) ||
6135             ((pinfo->filled & MPATH_INFO_METRIC) &&
6136              nla_put_u32(msg, NL80211_MPATH_INFO_METRIC,
6137                          pinfo->metric)) ||
6138             ((pinfo->filled & MPATH_INFO_EXPTIME) &&
6139              nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME,
6140                          pinfo->exptime)) ||
6141             ((pinfo->filled & MPATH_INFO_FLAGS) &&
6142              nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS,
6143                         pinfo->flags)) ||
6144             ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) &&
6145              nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT,
6146                          pinfo->discovery_timeout)) ||
6147             ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) &&
6148              nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES,
6149                         pinfo->discovery_retries)) ||
6150             ((pinfo->filled & MPATH_INFO_HOP_COUNT) &&
6151              nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT,
6152                         pinfo->hop_count)) ||
6153             ((pinfo->filled & MPATH_INFO_PATH_CHANGE) &&
6154              nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE,
6155                          pinfo->path_change_count)))
6156                 goto nla_put_failure;
6157
6158         nla_nest_end(msg, pinfoattr);
6159
6160         genlmsg_end(msg, hdr);
6161         return 0;
6162
6163  nla_put_failure:
6164         genlmsg_cancel(msg, hdr);
6165         return -EMSGSIZE;
6166 }
6167
6168 static int nl80211_dump_mpath(struct sk_buff *skb,
6169                               struct netlink_callback *cb)
6170 {
6171         struct mpath_info pinfo;
6172         struct cfg80211_registered_device *rdev;
6173         struct wireless_dev *wdev;
6174         u8 dst[ETH_ALEN];
6175         u8 next_hop[ETH_ALEN];
6176         int path_idx = cb->args[2];
6177         int err;
6178
6179         rtnl_lock();
6180         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6181         if (err)
6182                 goto out_err;
6183
6184         if (!rdev->ops->dump_mpath) {
6185                 err = -EOPNOTSUPP;
6186                 goto out_err;
6187         }
6188
6189         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6190                 err = -EOPNOTSUPP;
6191                 goto out_err;
6192         }
6193
6194         while (1) {
6195                 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst,
6196                                       next_hop, &pinfo);
6197                 if (err == -ENOENT)
6198                         break;
6199                 if (err)
6200                         goto out_err;
6201
6202                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6203                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6204                                        wdev->netdev, dst, next_hop,
6205                                        &pinfo) < 0)
6206                         goto out;
6207
6208                 path_idx++;
6209         }
6210
6211  out:
6212         cb->args[2] = path_idx;
6213         err = skb->len;
6214  out_err:
6215         rtnl_unlock();
6216         return err;
6217 }
6218
6219 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info)
6220 {
6221         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6222         int err;
6223         struct net_device *dev = info->user_ptr[1];
6224         struct mpath_info pinfo;
6225         struct sk_buff *msg;
6226         u8 *dst = NULL;
6227         u8 next_hop[ETH_ALEN];
6228
6229         memset(&pinfo, 0, sizeof(pinfo));
6230
6231         if (!info->attrs[NL80211_ATTR_MAC])
6232                 return -EINVAL;
6233
6234         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6235
6236         if (!rdev->ops->get_mpath)
6237                 return -EOPNOTSUPP;
6238
6239         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6240                 return -EOPNOTSUPP;
6241
6242         err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo);
6243         if (err)
6244                 return err;
6245
6246         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6247         if (!msg)
6248                 return -ENOMEM;
6249
6250         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6251                                  dev, dst, next_hop, &pinfo) < 0) {
6252                 nlmsg_free(msg);
6253                 return -ENOBUFS;
6254         }
6255
6256         return genlmsg_reply(msg, info);
6257 }
6258
6259 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info)
6260 {
6261         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6262         struct net_device *dev = info->user_ptr[1];
6263         u8 *dst = NULL;
6264         u8 *next_hop = NULL;
6265
6266         if (!info->attrs[NL80211_ATTR_MAC])
6267                 return -EINVAL;
6268
6269         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6270                 return -EINVAL;
6271
6272         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6273         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6274
6275         if (!rdev->ops->change_mpath)
6276                 return -EOPNOTSUPP;
6277
6278         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6279                 return -EOPNOTSUPP;
6280
6281         return rdev_change_mpath(rdev, dev, dst, next_hop);
6282 }
6283
6284 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info)
6285 {
6286         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6287         struct net_device *dev = info->user_ptr[1];
6288         u8 *dst = NULL;
6289         u8 *next_hop = NULL;
6290
6291         if (!info->attrs[NL80211_ATTR_MAC])
6292                 return -EINVAL;
6293
6294         if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP])
6295                 return -EINVAL;
6296
6297         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6298         next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]);
6299
6300         if (!rdev->ops->add_mpath)
6301                 return -EOPNOTSUPP;
6302
6303         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6304                 return -EOPNOTSUPP;
6305
6306         return rdev_add_mpath(rdev, dev, dst, next_hop);
6307 }
6308
6309 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info)
6310 {
6311         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6312         struct net_device *dev = info->user_ptr[1];
6313         u8 *dst = NULL;
6314
6315         if (info->attrs[NL80211_ATTR_MAC])
6316                 dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6317
6318         if (!rdev->ops->del_mpath)
6319                 return -EOPNOTSUPP;
6320
6321         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6322                 return -EOPNOTSUPP;
6323
6324         return rdev_del_mpath(rdev, dev, dst);
6325 }
6326
6327 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info)
6328 {
6329         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6330         int err;
6331         struct net_device *dev = info->user_ptr[1];
6332         struct mpath_info pinfo;
6333         struct sk_buff *msg;
6334         u8 *dst = NULL;
6335         u8 mpp[ETH_ALEN];
6336
6337         memset(&pinfo, 0, sizeof(pinfo));
6338
6339         if (!info->attrs[NL80211_ATTR_MAC])
6340                 return -EINVAL;
6341
6342         dst = nla_data(info->attrs[NL80211_ATTR_MAC]);
6343
6344         if (!rdev->ops->get_mpp)
6345                 return -EOPNOTSUPP;
6346
6347         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT)
6348                 return -EOPNOTSUPP;
6349
6350         err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo);
6351         if (err)
6352                 return err;
6353
6354         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6355         if (!msg)
6356                 return -ENOMEM;
6357
6358         if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0,
6359                                dev, dst, mpp, &pinfo) < 0) {
6360                 nlmsg_free(msg);
6361                 return -ENOBUFS;
6362         }
6363
6364         return genlmsg_reply(msg, info);
6365 }
6366
6367 static int nl80211_dump_mpp(struct sk_buff *skb,
6368                             struct netlink_callback *cb)
6369 {
6370         struct mpath_info pinfo;
6371         struct cfg80211_registered_device *rdev;
6372         struct wireless_dev *wdev;
6373         u8 dst[ETH_ALEN];
6374         u8 mpp[ETH_ALEN];
6375         int path_idx = cb->args[2];
6376         int err;
6377
6378         rtnl_lock();
6379         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
6380         if (err)
6381                 goto out_err;
6382
6383         if (!rdev->ops->dump_mpp) {
6384                 err = -EOPNOTSUPP;
6385                 goto out_err;
6386         }
6387
6388         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) {
6389                 err = -EOPNOTSUPP;
6390                 goto out_err;
6391         }
6392
6393         while (1) {
6394                 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst,
6395                                     mpp, &pinfo);
6396                 if (err == -ENOENT)
6397                         break;
6398                 if (err)
6399                         goto out_err;
6400
6401                 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid,
6402                                        cb->nlh->nlmsg_seq, NLM_F_MULTI,
6403                                        wdev->netdev, dst, mpp,
6404                                        &pinfo) < 0)
6405                         goto out;
6406
6407                 path_idx++;
6408         }
6409
6410  out:
6411         cb->args[2] = path_idx;
6412         err = skb->len;
6413  out_err:
6414         rtnl_unlock();
6415         return err;
6416 }
6417
6418 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info)
6419 {
6420         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6421         struct net_device *dev = info->user_ptr[1];
6422         struct wireless_dev *wdev = dev->ieee80211_ptr;
6423         struct bss_parameters params;
6424         int err;
6425
6426         memset(&params, 0, sizeof(params));
6427         /* default to not changing parameters */
6428         params.use_cts_prot = -1;
6429         params.use_short_preamble = -1;
6430         params.use_short_slot_time = -1;
6431         params.ap_isolate = -1;
6432         params.ht_opmode = -1;
6433         params.p2p_ctwindow = -1;
6434         params.p2p_opp_ps = -1;
6435
6436         if (info->attrs[NL80211_ATTR_BSS_CTS_PROT])
6437                 params.use_cts_prot =
6438                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]);
6439         if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE])
6440                 params.use_short_preamble =
6441                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]);
6442         if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME])
6443                 params.use_short_slot_time =
6444                     nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]);
6445         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
6446                 params.basic_rates =
6447                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6448                 params.basic_rates_len =
6449                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
6450         }
6451         if (info->attrs[NL80211_ATTR_AP_ISOLATE])
6452                 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]);
6453         if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE])
6454                 params.ht_opmode =
6455                         nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]);
6456
6457         if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) {
6458                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6459                         return -EINVAL;
6460                 params.p2p_ctwindow =
6461                         nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]);
6462                 if (params.p2p_ctwindow != 0 &&
6463                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN))
6464                         return -EINVAL;
6465         }
6466
6467         if (info->attrs[NL80211_ATTR_P2P_OPPPS]) {
6468                 u8 tmp;
6469
6470                 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6471                         return -EINVAL;
6472                 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]);
6473                 params.p2p_opp_ps = tmp;
6474                 if (params.p2p_opp_ps &&
6475                     !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS))
6476                         return -EINVAL;
6477         }
6478
6479         if (!rdev->ops->change_bss)
6480                 return -EOPNOTSUPP;
6481
6482         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
6483             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
6484                 return -EOPNOTSUPP;
6485
6486         wdev_lock(wdev);
6487         err = rdev_change_bss(rdev, dev, &params);
6488         wdev_unlock(wdev);
6489
6490         return err;
6491 }
6492
6493 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info)
6494 {
6495         char *data = NULL;
6496         bool is_indoor;
6497         enum nl80211_user_reg_hint_type user_reg_hint_type;
6498         u32 owner_nlportid;
6499
6500         /*
6501          * You should only get this when cfg80211 hasn't yet initialized
6502          * completely when built-in to the kernel right between the time
6503          * window between nl80211_init() and regulatory_init(), if that is
6504          * even possible.
6505          */
6506         if (unlikely(!rcu_access_pointer(cfg80211_regdomain)))
6507                 return -EINPROGRESS;
6508
6509         if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE])
6510                 user_reg_hint_type =
6511                   nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]);
6512         else
6513                 user_reg_hint_type = NL80211_USER_REG_HINT_USER;
6514
6515         switch (user_reg_hint_type) {
6516         case NL80211_USER_REG_HINT_USER:
6517         case NL80211_USER_REG_HINT_CELL_BASE:
6518                 if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
6519                         return -EINVAL;
6520
6521                 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
6522                 return regulatory_hint_user(data, user_reg_hint_type);
6523         case NL80211_USER_REG_HINT_INDOOR:
6524                 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
6525                         owner_nlportid = info->snd_portid;
6526                         is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR];
6527                 } else {
6528                         owner_nlportid = 0;
6529                         is_indoor = true;
6530                 }
6531
6532                 return regulatory_hint_indoor(is_indoor, owner_nlportid);
6533         default:
6534                 return -EINVAL;
6535         }
6536 }
6537
6538 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info)
6539 {
6540         return reg_reload_regdb();
6541 }
6542
6543 static int nl80211_get_mesh_config(struct sk_buff *skb,
6544                                    struct genl_info *info)
6545 {
6546         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6547         struct net_device *dev = info->user_ptr[1];
6548         struct wireless_dev *wdev = dev->ieee80211_ptr;
6549         struct mesh_config cur_params;
6550         int err = 0;
6551         void *hdr;
6552         struct nlattr *pinfoattr;
6553         struct sk_buff *msg;
6554
6555         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6556                 return -EOPNOTSUPP;
6557
6558         if (!rdev->ops->get_mesh_config)
6559                 return -EOPNOTSUPP;
6560
6561         wdev_lock(wdev);
6562         /* If not connected, get default parameters */
6563         if (!wdev->mesh_id_len)
6564                 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params));
6565         else
6566                 err = rdev_get_mesh_config(rdev, dev, &cur_params);
6567         wdev_unlock(wdev);
6568
6569         if (err)
6570                 return err;
6571
6572         /* Draw up a netlink message to send back */
6573         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
6574         if (!msg)
6575                 return -ENOMEM;
6576         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
6577                              NL80211_CMD_GET_MESH_CONFIG);
6578         if (!hdr)
6579                 goto out;
6580         pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG);
6581         if (!pinfoattr)
6582                 goto nla_put_failure;
6583         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
6584             nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT,
6585                         cur_params.dot11MeshRetryTimeout) ||
6586             nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT,
6587                         cur_params.dot11MeshConfirmTimeout) ||
6588             nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT,
6589                         cur_params.dot11MeshHoldingTimeout) ||
6590             nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS,
6591                         cur_params.dot11MeshMaxPeerLinks) ||
6592             nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES,
6593                        cur_params.dot11MeshMaxRetries) ||
6594             nla_put_u8(msg, NL80211_MESHCONF_TTL,
6595                        cur_params.dot11MeshTTL) ||
6596             nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL,
6597                        cur_params.element_ttl) ||
6598             nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6599                        cur_params.auto_open_plinks) ||
6600             nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6601                         cur_params.dot11MeshNbrOffsetMaxNeighbor) ||
6602             nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6603                        cur_params.dot11MeshHWMPmaxPREQretries) ||
6604             nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME,
6605                         cur_params.path_refresh_time) ||
6606             nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6607                         cur_params.min_discovery_timeout) ||
6608             nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6609                         cur_params.dot11MeshHWMPactivePathTimeout) ||
6610             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6611                         cur_params.dot11MeshHWMPpreqMinInterval) ||
6612             nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6613                         cur_params.dot11MeshHWMPperrMinInterval) ||
6614             nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6615                         cur_params.dot11MeshHWMPnetDiameterTraversalTime) ||
6616             nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE,
6617                        cur_params.dot11MeshHWMPRootMode) ||
6618             nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6619                         cur_params.dot11MeshHWMPRannInterval) ||
6620             nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6621                        cur_params.dot11MeshGateAnnouncementProtocol) ||
6622             nla_put_u8(msg, NL80211_MESHCONF_FORWARDING,
6623                        cur_params.dot11MeshForwarding) ||
6624             nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD,
6625                         cur_params.rssi_threshold) ||
6626             nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE,
6627                         cur_params.ht_opmode) ||
6628             nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6629                         cur_params.dot11MeshHWMPactivePathToRootTimeout) ||
6630             nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6631                         cur_params.dot11MeshHWMProotInterval) ||
6632             nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6633                         cur_params.dot11MeshHWMPconfirmationInterval) ||
6634             nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE,
6635                         cur_params.power_mode) ||
6636             nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW,
6637                         cur_params.dot11MeshAwakeWindowDuration) ||
6638             nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT,
6639                         cur_params.plink_timeout) ||
6640             nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE,
6641                        cur_params.dot11MeshConnectedToMeshGate))
6642                 goto nla_put_failure;
6643         nla_nest_end(msg, pinfoattr);
6644         genlmsg_end(msg, hdr);
6645         return genlmsg_reply(msg, info);
6646
6647  nla_put_failure:
6648  out:
6649         nlmsg_free(msg);
6650         return -ENOBUFS;
6651 }
6652
6653 static const struct nla_policy
6654 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = {
6655         [NL80211_MESHCONF_RETRY_TIMEOUT] =
6656                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6657         [NL80211_MESHCONF_CONFIRM_TIMEOUT] =
6658                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6659         [NL80211_MESHCONF_HOLDING_TIMEOUT] =
6660                 NLA_POLICY_RANGE(NLA_U16, 1, 255),
6661         [NL80211_MESHCONF_MAX_PEER_LINKS] =
6662                 NLA_POLICY_RANGE(NLA_U16, 0, 255),
6663         [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16),
6664         [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6665         [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1),
6666         [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1),
6667         [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] =
6668                 NLA_POLICY_RANGE(NLA_U32, 1, 255),
6669         [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 },
6670         [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 },
6671         [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1),
6672         [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 },
6673         [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] =
6674                 NLA_POLICY_MIN(NLA_U16, 1),
6675         [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] =
6676                 NLA_POLICY_MIN(NLA_U16, 1),
6677         [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] =
6678                 NLA_POLICY_MIN(NLA_U16, 1),
6679         [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4),
6680         [NL80211_MESHCONF_HWMP_RANN_INTERVAL] =
6681                 NLA_POLICY_MIN(NLA_U16, 1),
6682         [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1),
6683         [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1),
6684         [NL80211_MESHCONF_RSSI_THRESHOLD] =
6685                 NLA_POLICY_RANGE(NLA_S32, -255, 0),
6686         [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 },
6687         [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 },
6688         [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] =
6689                 NLA_POLICY_MIN(NLA_U16, 1),
6690         [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] =
6691                 NLA_POLICY_MIN(NLA_U16, 1),
6692         [NL80211_MESHCONF_POWER_MODE] =
6693                 NLA_POLICY_RANGE(NLA_U32,
6694                                  NL80211_MESH_POWER_ACTIVE,
6695                                  NL80211_MESH_POWER_MAX),
6696         [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 },
6697         [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 },
6698         [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1),
6699 };
6700
6701 static const struct nla_policy
6702         nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = {
6703         [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 },
6704         [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 },
6705         [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 },
6706         [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG },
6707         [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 },
6708         [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG },
6709         [NL80211_MESH_SETUP_IE] =
6710                 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr,
6711                                        IEEE80211_MAX_DATA_LEN),
6712         [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG },
6713 };
6714
6715 static int nl80211_parse_mesh_config(struct genl_info *info,
6716                                      struct mesh_config *cfg,
6717                                      u32 *mask_out)
6718 {
6719         struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1];
6720         u32 mask = 0;
6721         u16 ht_opmode;
6722
6723 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn)       \
6724 do {                                                                    \
6725         if (tb[attr]) {                                                 \
6726                 cfg->param = fn(tb[attr]);                              \
6727                 mask |= BIT((attr) - 1);                                \
6728         }                                                               \
6729 } while (0)
6730
6731         if (!info->attrs[NL80211_ATTR_MESH_CONFIG])
6732                 return -EINVAL;
6733         if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack))
6734                 return -EINVAL;
6735
6736         /* This makes sure that there aren't more than 32 mesh config
6737          * parameters (otherwise our bitfield scheme would not work.) */
6738         BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32);
6739
6740         /* Fill in the params struct */
6741         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask,
6742                                   NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16);
6743         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask,
6744                                   NL80211_MESHCONF_CONFIRM_TIMEOUT,
6745                                   nla_get_u16);
6746         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask,
6747                                   NL80211_MESHCONF_HOLDING_TIMEOUT,
6748                                   nla_get_u16);
6749         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask,
6750                                   NL80211_MESHCONF_MAX_PEER_LINKS,
6751                                   nla_get_u16);
6752         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask,
6753                                   NL80211_MESHCONF_MAX_RETRIES, nla_get_u8);
6754         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask,
6755                                   NL80211_MESHCONF_TTL, nla_get_u8);
6756         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask,
6757                                   NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8);
6758         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask,
6759                                   NL80211_MESHCONF_AUTO_OPEN_PLINKS,
6760                                   nla_get_u8);
6761         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor,
6762                                   mask,
6763                                   NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR,
6764                                   nla_get_u32);
6765         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask,
6766                                   NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES,
6767                                   nla_get_u8);
6768         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask,
6769                                   NL80211_MESHCONF_PATH_REFRESH_TIME,
6770                                   nla_get_u32);
6771         if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) &&
6772             (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535))
6773                 return -EINVAL;
6774         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask,
6775                                   NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT,
6776                                   nla_get_u16);
6777         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout,
6778                                   mask,
6779                                   NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT,
6780                                   nla_get_u32);
6781         if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) &&
6782             (cfg->dot11MeshHWMPactivePathTimeout < 1 ||
6783              cfg->dot11MeshHWMPactivePathTimeout > 65535))
6784                 return -EINVAL;
6785         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask,
6786                                   NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL,
6787                                   nla_get_u16);
6788         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask,
6789                                   NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL,
6790                                   nla_get_u16);
6791         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6792                                   dot11MeshHWMPnetDiameterTraversalTime, mask,
6793                                   NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
6794                                   nla_get_u16);
6795         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask,
6796                                   NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8);
6797         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask,
6798                                   NL80211_MESHCONF_HWMP_RANN_INTERVAL,
6799                                   nla_get_u16);
6800         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol,
6801                                   mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS,
6802                                   nla_get_u8);
6803         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask,
6804                                   NL80211_MESHCONF_FORWARDING, nla_get_u8);
6805         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask,
6806                                   NL80211_MESHCONF_RSSI_THRESHOLD,
6807                                   nla_get_s32);
6808         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask,
6809                                   NL80211_MESHCONF_CONNECTED_TO_GATE,
6810                                   nla_get_u8);
6811         /*
6812          * Check HT operation mode based on
6813          * IEEE 802.11-2016 9.4.2.57 HT Operation element.
6814          */
6815         if (tb[NL80211_MESHCONF_HT_OPMODE]) {
6816                 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]);
6817
6818                 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION |
6819                                   IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT |
6820                                   IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT))
6821                         return -EINVAL;
6822
6823                 /* NON_HT_STA bit is reserved, but some programs set it */
6824                 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT;
6825
6826                 cfg->ht_opmode = ht_opmode;
6827                 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1));
6828         }
6829         FILL_IN_MESH_PARAM_IF_SET(tb, cfg,
6830                                   dot11MeshHWMPactivePathToRootTimeout, mask,
6831                                   NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT,
6832                                   nla_get_u32);
6833         if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) &&
6834             (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 ||
6835              cfg->dot11MeshHWMPactivePathToRootTimeout > 65535))
6836                 return -EINVAL;
6837         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask,
6838                                   NL80211_MESHCONF_HWMP_ROOT_INTERVAL,
6839                                   nla_get_u16);
6840         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval,
6841                                   mask,
6842                                   NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL,
6843                                   nla_get_u16);
6844         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask,
6845                                   NL80211_MESHCONF_POWER_MODE, nla_get_u32);
6846         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask,
6847                                   NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16);
6848         FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask,
6849                                   NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32);
6850         if (mask_out)
6851                 *mask_out = mask;
6852
6853         return 0;
6854
6855 #undef FILL_IN_MESH_PARAM_IF_SET
6856 }
6857
6858 static int nl80211_parse_mesh_setup(struct genl_info *info,
6859                                      struct mesh_setup *setup)
6860 {
6861         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6862         struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1];
6863
6864         if (!info->attrs[NL80211_ATTR_MESH_SETUP])
6865                 return -EINVAL;
6866         if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack))
6867                 return -EINVAL;
6868
6869         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])
6870                 setup->sync_method =
6871                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ?
6872                  IEEE80211_SYNC_METHOD_VENDOR :
6873                  IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET;
6874
6875         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])
6876                 setup->path_sel_proto =
6877                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ?
6878                  IEEE80211_PATH_PROTOCOL_VENDOR :
6879                  IEEE80211_PATH_PROTOCOL_HWMP;
6880
6881         if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])
6882                 setup->path_metric =
6883                 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ?
6884                  IEEE80211_PATH_METRIC_VENDOR :
6885                  IEEE80211_PATH_METRIC_AIRTIME;
6886
6887         if (tb[NL80211_MESH_SETUP_IE]) {
6888                 struct nlattr *ieattr =
6889                         tb[NL80211_MESH_SETUP_IE];
6890                 setup->ie = nla_data(ieattr);
6891                 setup->ie_len = nla_len(ieattr);
6892         }
6893         if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] &&
6894             !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM))
6895                 return -EINVAL;
6896         setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]);
6897         setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]);
6898         setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]);
6899         if (setup->is_secure)
6900                 setup->user_mpm = true;
6901
6902         if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) {
6903                 if (!setup->user_mpm)
6904                         return -EINVAL;
6905                 setup->auth_id =
6906                         nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]);
6907         }
6908
6909         return 0;
6910 }
6911
6912 static int nl80211_update_mesh_config(struct sk_buff *skb,
6913                                       struct genl_info *info)
6914 {
6915         struct cfg80211_registered_device *rdev = info->user_ptr[0];
6916         struct net_device *dev = info->user_ptr[1];
6917         struct wireless_dev *wdev = dev->ieee80211_ptr;
6918         struct mesh_config cfg;
6919         u32 mask;
6920         int err;
6921
6922         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
6923                 return -EOPNOTSUPP;
6924
6925         if (!rdev->ops->update_mesh_config)
6926                 return -EOPNOTSUPP;
6927
6928         err = nl80211_parse_mesh_config(info, &cfg, &mask);
6929         if (err)
6930                 return err;
6931
6932         wdev_lock(wdev);
6933         if (!wdev->mesh_id_len)
6934                 err = -ENOLINK;
6935
6936         if (!err)
6937                 err = rdev_update_mesh_config(rdev, dev, mask, &cfg);
6938
6939         wdev_unlock(wdev);
6940
6941         return err;
6942 }
6943
6944 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom,
6945                               struct sk_buff *msg)
6946 {
6947         struct nlattr *nl_reg_rules;
6948         unsigned int i;
6949
6950         if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) ||
6951             (regdom->dfs_region &&
6952              nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region)))
6953                 goto nla_put_failure;
6954
6955         nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES);
6956         if (!nl_reg_rules)
6957                 goto nla_put_failure;
6958
6959         for (i = 0; i < regdom->n_reg_rules; i++) {
6960                 struct nlattr *nl_reg_rule;
6961                 const struct ieee80211_reg_rule *reg_rule;
6962                 const struct ieee80211_freq_range *freq_range;
6963                 const struct ieee80211_power_rule *power_rule;
6964                 unsigned int max_bandwidth_khz;
6965
6966                 reg_rule = &regdom->reg_rules[i];
6967                 freq_range = &reg_rule->freq_range;
6968                 power_rule = &reg_rule->power_rule;
6969
6970                 nl_reg_rule = nla_nest_start_noflag(msg, i);
6971                 if (!nl_reg_rule)
6972                         goto nla_put_failure;
6973
6974                 max_bandwidth_khz = freq_range->max_bandwidth_khz;
6975                 if (!max_bandwidth_khz)
6976                         max_bandwidth_khz = reg_get_max_bandwidth(regdom,
6977                                                                   reg_rule);
6978
6979                 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS,
6980                                 reg_rule->flags) ||
6981                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START,
6982                                 freq_range->start_freq_khz) ||
6983                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END,
6984                                 freq_range->end_freq_khz) ||
6985                     nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW,
6986                                 max_bandwidth_khz) ||
6987                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN,
6988                                 power_rule->max_antenna_gain) ||
6989                     nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP,
6990                                 power_rule->max_eirp) ||
6991                     nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME,
6992                                 reg_rule->dfs_cac_ms))
6993                         goto nla_put_failure;
6994
6995                 nla_nest_end(msg, nl_reg_rule);
6996         }
6997
6998         nla_nest_end(msg, nl_reg_rules);
6999         return 0;
7000
7001 nla_put_failure:
7002         return -EMSGSIZE;
7003 }
7004
7005 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
7006 {
7007         const struct ieee80211_regdomain *regdom = NULL;
7008         struct cfg80211_registered_device *rdev;
7009         struct wiphy *wiphy = NULL;
7010         struct sk_buff *msg;
7011         void *hdr;
7012
7013         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
7014         if (!msg)
7015                 return -ENOBUFS;
7016
7017         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
7018                              NL80211_CMD_GET_REG);
7019         if (!hdr)
7020                 goto put_failure;
7021
7022         if (info->attrs[NL80211_ATTR_WIPHY]) {
7023                 bool self_managed;
7024
7025                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
7026                 if (IS_ERR(rdev)) {
7027                         nlmsg_free(msg);
7028                         return PTR_ERR(rdev);
7029                 }
7030
7031                 wiphy = &rdev->wiphy;
7032                 self_managed = wiphy->regulatory_flags &
7033                                REGULATORY_WIPHY_SELF_MANAGED;
7034                 regdom = get_wiphy_regdom(wiphy);
7035
7036                 /* a self-managed-reg device must have a private regdom */
7037                 if (WARN_ON(!regdom && self_managed)) {
7038                         nlmsg_free(msg);
7039                         return -EINVAL;
7040                 }
7041
7042                 if (regdom &&
7043                     nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7044                         goto nla_put_failure;
7045         }
7046
7047         if (!wiphy && reg_last_request_cell_base() &&
7048             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7049                         NL80211_USER_REG_HINT_CELL_BASE))
7050                 goto nla_put_failure;
7051
7052         rcu_read_lock();
7053
7054         if (!regdom)
7055                 regdom = rcu_dereference(cfg80211_regdomain);
7056
7057         if (nl80211_put_regdom(regdom, msg))
7058                 goto nla_put_failure_rcu;
7059
7060         rcu_read_unlock();
7061
7062         genlmsg_end(msg, hdr);
7063         return genlmsg_reply(msg, info);
7064
7065 nla_put_failure_rcu:
7066         rcu_read_unlock();
7067 nla_put_failure:
7068 put_failure:
7069         nlmsg_free(msg);
7070         return -EMSGSIZE;
7071 }
7072
7073 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb,
7074                                u32 seq, int flags, struct wiphy *wiphy,
7075                                const struct ieee80211_regdomain *regdom)
7076 {
7077         void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
7078                                    NL80211_CMD_GET_REG);
7079
7080         if (!hdr)
7081                 return -1;
7082
7083         genl_dump_check_consistent(cb, hdr);
7084
7085         if (nl80211_put_regdom(regdom, msg))
7086                 goto nla_put_failure;
7087
7088         if (!wiphy && reg_last_request_cell_base() &&
7089             nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE,
7090                         NL80211_USER_REG_HINT_CELL_BASE))
7091                 goto nla_put_failure;
7092
7093         if (wiphy &&
7094             nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
7095                 goto nla_put_failure;
7096
7097         if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
7098             nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
7099                 goto nla_put_failure;
7100
7101         genlmsg_end(msg, hdr);
7102         return 0;
7103
7104 nla_put_failure:
7105         genlmsg_cancel(msg, hdr);
7106         return -EMSGSIZE;
7107 }
7108
7109 static int nl80211_get_reg_dump(struct sk_buff *skb,
7110                                 struct netlink_callback *cb)
7111 {
7112         const struct ieee80211_regdomain *regdom = NULL;
7113         struct cfg80211_registered_device *rdev;
7114         int err, reg_idx, start = cb->args[2];
7115
7116         rtnl_lock();
7117
7118         if (cfg80211_regdomain && start == 0) {
7119                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7120                                           NLM_F_MULTI, NULL,
7121                                           rtnl_dereference(cfg80211_regdomain));
7122                 if (err < 0)
7123                         goto out_err;
7124         }
7125
7126         /* the global regdom is idx 0 */
7127         reg_idx = 1;
7128         list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
7129                 regdom = get_wiphy_regdom(&rdev->wiphy);
7130                 if (!regdom)
7131                         continue;
7132
7133                 if (++reg_idx <= start)
7134                         continue;
7135
7136                 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq,
7137                                           NLM_F_MULTI, &rdev->wiphy, regdom);
7138                 if (err < 0) {
7139                         reg_idx--;
7140                         break;
7141                 }
7142         }
7143
7144         cb->args[2] = reg_idx;
7145         err = skb->len;
7146 out_err:
7147         rtnl_unlock();
7148         return err;
7149 }
7150
7151 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
7152 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = {
7153         [NL80211_ATTR_REG_RULE_FLAGS]           = { .type = NLA_U32 },
7154         [NL80211_ATTR_FREQ_RANGE_START]         = { .type = NLA_U32 },
7155         [NL80211_ATTR_FREQ_RANGE_END]           = { .type = NLA_U32 },
7156         [NL80211_ATTR_FREQ_RANGE_MAX_BW]        = { .type = NLA_U32 },
7157         [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]  = { .type = NLA_U32 },
7158         [NL80211_ATTR_POWER_RULE_MAX_EIRP]      = { .type = NLA_U32 },
7159         [NL80211_ATTR_DFS_CAC_TIME]             = { .type = NLA_U32 },
7160 };
7161
7162 static int parse_reg_rule(struct nlattr *tb[],
7163         struct ieee80211_reg_rule *reg_rule)
7164 {
7165         struct ieee80211_freq_range *freq_range = &reg_rule->freq_range;
7166         struct ieee80211_power_rule *power_rule = &reg_rule->power_rule;
7167
7168         if (!tb[NL80211_ATTR_REG_RULE_FLAGS])
7169                 return -EINVAL;
7170         if (!tb[NL80211_ATTR_FREQ_RANGE_START])
7171                 return -EINVAL;
7172         if (!tb[NL80211_ATTR_FREQ_RANGE_END])
7173                 return -EINVAL;
7174         if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW])
7175                 return -EINVAL;
7176         if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP])
7177                 return -EINVAL;
7178
7179         reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]);
7180
7181         freq_range->start_freq_khz =
7182                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]);
7183         freq_range->end_freq_khz =
7184                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]);
7185         freq_range->max_bandwidth_khz =
7186                 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]);
7187
7188         power_rule->max_eirp =
7189                 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]);
7190
7191         if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN])
7192                 power_rule->max_antenna_gain =
7193                         nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]);
7194
7195         if (tb[NL80211_ATTR_DFS_CAC_TIME])
7196                 reg_rule->dfs_cac_ms =
7197                         nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]);
7198
7199         return 0;
7200 }
7201
7202 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
7203 {
7204         struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1];
7205         struct nlattr *nl_reg_rule;
7206         char *alpha2;
7207         int rem_reg_rules, r;
7208         u32 num_rules = 0, rule_idx = 0;
7209         enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET;
7210         struct ieee80211_regdomain *rd;
7211
7212         if (!info->attrs[NL80211_ATTR_REG_ALPHA2])
7213                 return -EINVAL;
7214
7215         if (!info->attrs[NL80211_ATTR_REG_RULES])
7216                 return -EINVAL;
7217
7218         alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]);
7219
7220         if (info->attrs[NL80211_ATTR_DFS_REGION])
7221                 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]);
7222
7223         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7224                             rem_reg_rules) {
7225                 num_rules++;
7226                 if (num_rules > NL80211_MAX_SUPP_REG_RULES)
7227                         return -EINVAL;
7228         }
7229
7230         if (!reg_is_valid_request(alpha2))
7231                 return -EINVAL;
7232
7233         rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
7234         if (!rd)
7235                 return -ENOMEM;
7236
7237         rd->n_reg_rules = num_rules;
7238         rd->alpha2[0] = alpha2[0];
7239         rd->alpha2[1] = alpha2[1];
7240
7241         /*
7242          * Disable DFS master mode if the DFS region was
7243          * not supported or known on this kernel.
7244          */
7245         if (reg_supported_dfs_region(dfs_region))
7246                 rd->dfs_region = dfs_region;
7247
7248         nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES],
7249                             rem_reg_rules) {
7250                 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX,
7251                                                 nl_reg_rule, reg_rule_policy,
7252                                                 info->extack);
7253                 if (r)
7254                         goto bad_reg;
7255                 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]);
7256                 if (r)
7257                         goto bad_reg;
7258
7259                 rule_idx++;
7260
7261                 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) {
7262                         r = -EINVAL;
7263                         goto bad_reg;
7264                 }
7265         }
7266
7267         /* set_regdom takes ownership of rd */
7268         return set_regdom(rd, REGD_SOURCE_CRDA);
7269  bad_reg:
7270         kfree(rd);
7271         return r;
7272 }
7273 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */
7274
7275 static int validate_scan_freqs(struct nlattr *freqs)
7276 {
7277         struct nlattr *attr1, *attr2;
7278         int n_channels = 0, tmp1, tmp2;
7279
7280         nla_for_each_nested(attr1, freqs, tmp1)
7281                 if (nla_len(attr1) != sizeof(u32))
7282                         return 0;
7283
7284         nla_for_each_nested(attr1, freqs, tmp1) {
7285                 n_channels++;
7286                 /*
7287                  * Some hardware has a limited channel list for
7288                  * scanning, and it is pretty much nonsensical
7289                  * to scan for a channel twice, so disallow that
7290                  * and don't require drivers to check that the
7291                  * channel list they get isn't longer than what
7292                  * they can scan, as long as they can scan all
7293                  * the channels they registered at once.
7294                  */
7295                 nla_for_each_nested(attr2, freqs, tmp2)
7296                         if (attr1 != attr2 &&
7297                             nla_get_u32(attr1) == nla_get_u32(attr2))
7298                                 return 0;
7299         }
7300
7301         return n_channels;
7302 }
7303
7304 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b)
7305 {
7306         return b < NUM_NL80211_BANDS && wiphy->bands[b];
7307 }
7308
7309 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy,
7310                             struct cfg80211_bss_selection *bss_select)
7311 {
7312         struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1];
7313         struct nlattr *nest;
7314         int err;
7315         bool found = false;
7316         int i;
7317
7318         /* only process one nested attribute */
7319         nest = nla_data(nla);
7320         if (!nla_ok(nest, nla_len(nest)))
7321                 return -EINVAL;
7322
7323         err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX,
7324                                           nest, nl80211_bss_select_policy,
7325                                           NULL);
7326         if (err)
7327                 return err;
7328
7329         /* only one attribute may be given */
7330         for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) {
7331                 if (attr[i]) {
7332                         if (found)
7333                                 return -EINVAL;
7334                         found = true;
7335                 }
7336         }
7337
7338         bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID;
7339
7340         if (attr[NL80211_BSS_SELECT_ATTR_RSSI])
7341                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI;
7342
7343         if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) {
7344                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF;
7345                 bss_select->param.band_pref =
7346                         nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]);
7347                 if (!is_band_valid(wiphy, bss_select->param.band_pref))
7348                         return -EINVAL;
7349         }
7350
7351         if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) {
7352                 struct nl80211_bss_select_rssi_adjust *adj_param;
7353
7354                 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]);
7355                 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST;
7356                 bss_select->param.adjust.band = adj_param->band;
7357                 bss_select->param.adjust.delta = adj_param->delta;
7358                 if (!is_band_valid(wiphy, bss_select->param.adjust.band))
7359                         return -EINVAL;
7360         }
7361
7362         /* user-space did not provide behaviour attribute */
7363         if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID)
7364                 return -EINVAL;
7365
7366         if (!(wiphy->bss_select_support & BIT(bss_select->behaviour)))
7367                 return -EINVAL;
7368
7369         return 0;
7370 }
7371
7372 int nl80211_parse_random_mac(struct nlattr **attrs,
7373                              u8 *mac_addr, u8 *mac_addr_mask)
7374 {
7375         int i;
7376
7377         if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) {
7378                 eth_zero_addr(mac_addr);
7379                 eth_zero_addr(mac_addr_mask);
7380                 mac_addr[0] = 0x2;
7381                 mac_addr_mask[0] = 0x3;
7382
7383                 return 0;
7384         }
7385
7386         /* need both or none */
7387         if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK])
7388                 return -EINVAL;
7389
7390         memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN);
7391         memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN);
7392
7393         /* don't allow or configure an mcast address */
7394         if (!is_multicast_ether_addr(mac_addr_mask) ||
7395             is_multicast_ether_addr(mac_addr))
7396                 return -EINVAL;
7397
7398         /*
7399          * allow users to pass a MAC address that has bits set outside
7400          * of the mask, but don't bother drivers with having to deal
7401          * with such bits
7402          */
7403         for (i = 0; i < ETH_ALEN; i++)
7404                 mac_addr[i] &= mac_addr_mask[i];
7405
7406         return 0;
7407 }
7408
7409 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev)
7410 {
7411         ASSERT_WDEV_LOCK(wdev);
7412
7413         if (!cfg80211_beaconing_iface_active(wdev))
7414                 return true;
7415
7416         if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR))
7417                 return true;
7418
7419         return regulatory_pre_cac_allowed(wdev->wiphy);
7420 }
7421
7422 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag,
7423                                     enum nl80211_ext_feature_index feat)
7424 {
7425         if (!(flags & flag))
7426                 return true;
7427         if (wiphy_ext_feature_isset(wiphy, feat))
7428                 return true;
7429         return false;
7430 }
7431
7432 static int
7433 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev,
7434                          void *request, struct nlattr **attrs,
7435                          bool is_sched_scan)
7436 {
7437         u8 *mac_addr, *mac_addr_mask;
7438         u32 *flags;
7439         enum nl80211_feature_flags randomness_flag;
7440
7441         if (!attrs[NL80211_ATTR_SCAN_FLAGS])
7442                 return 0;
7443
7444         if (is_sched_scan) {
7445                 struct cfg80211_sched_scan_request *req = request;
7446
7447                 randomness_flag = wdev ?
7448                                   NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR :
7449                                   NL80211_FEATURE_ND_RANDOM_MAC_ADDR;
7450                 flags = &req->flags;
7451                 mac_addr = req->mac_addr;
7452                 mac_addr_mask = req->mac_addr_mask;
7453         } else {
7454                 struct cfg80211_scan_request *req = request;
7455
7456                 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
7457                 flags = &req->flags;
7458                 mac_addr = req->mac_addr;
7459                 mac_addr_mask = req->mac_addr_mask;
7460         }
7461
7462         *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]);
7463
7464         if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) &&
7465              !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) ||
7466             !nl80211_check_scan_feat(wiphy, *flags,
7467                                      NL80211_SCAN_FLAG_LOW_SPAN,
7468                                      NL80211_EXT_FEATURE_LOW_SPAN_SCAN) ||
7469             !nl80211_check_scan_feat(wiphy, *flags,
7470                                      NL80211_SCAN_FLAG_LOW_POWER,
7471                                      NL80211_EXT_FEATURE_LOW_POWER_SCAN) ||
7472             !nl80211_check_scan_feat(wiphy, *flags,
7473                                      NL80211_SCAN_FLAG_HIGH_ACCURACY,
7474                                      NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) ||
7475             !nl80211_check_scan_feat(wiphy, *flags,
7476                                      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME,
7477                                      NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) ||
7478             !nl80211_check_scan_feat(wiphy, *flags,
7479                                      NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP,
7480                                      NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) ||
7481             !nl80211_check_scan_feat(wiphy, *flags,
7482                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION,
7483                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) ||
7484             !nl80211_check_scan_feat(wiphy, *flags,
7485                                      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE,
7486                                      NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) ||
7487             !nl80211_check_scan_feat(wiphy, *flags,
7488                                      NL80211_SCAN_FLAG_RANDOM_SN,
7489                                      NL80211_EXT_FEATURE_SCAN_RANDOM_SN) ||
7490             !nl80211_check_scan_feat(wiphy, *flags,
7491                                      NL80211_SCAN_FLAG_MIN_PREQ_CONTENT,
7492                                      NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT))
7493                 return -EOPNOTSUPP;
7494
7495         if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) {
7496                 int err;
7497
7498                 if (!(wiphy->features & randomness_flag) ||
7499                     (wdev && wdev->current_bss))
7500                         return -EOPNOTSUPP;
7501
7502                 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask);
7503                 if (err)
7504                         return err;
7505         }
7506
7507         return 0;
7508 }
7509
7510 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info)
7511 {
7512         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7513         struct wireless_dev *wdev = info->user_ptr[1];
7514         struct cfg80211_scan_request *request;
7515         struct nlattr *attr;
7516         struct wiphy *wiphy;
7517         int err, tmp, n_ssids = 0, n_channels, i;
7518         size_t ie_len;
7519
7520         wiphy = &rdev->wiphy;
7521
7522         if (wdev->iftype == NL80211_IFTYPE_NAN)
7523                 return -EOPNOTSUPP;
7524
7525         if (!rdev->ops->scan)
7526                 return -EOPNOTSUPP;
7527
7528         if (rdev->scan_req || rdev->scan_msg) {
7529                 err = -EBUSY;
7530                 goto unlock;
7531         }
7532
7533         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7534                 n_channels = validate_scan_freqs(
7535                                 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7536                 if (!n_channels) {
7537                         err = -EINVAL;
7538                         goto unlock;
7539                 }
7540         } else {
7541                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7542         }
7543
7544         if (info->attrs[NL80211_ATTR_SCAN_SSIDS])
7545                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp)
7546                         n_ssids++;
7547
7548         if (n_ssids > wiphy->max_scan_ssids) {
7549                 err = -EINVAL;
7550                 goto unlock;
7551         }
7552
7553         if (info->attrs[NL80211_ATTR_IE])
7554                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7555         else
7556                 ie_len = 0;
7557
7558         if (ie_len > wiphy->max_scan_ie_len) {
7559                 err = -EINVAL;
7560                 goto unlock;
7561         }
7562
7563         request = kzalloc(sizeof(*request)
7564                         + sizeof(*request->ssids) * n_ssids
7565                         + sizeof(*request->channels) * n_channels
7566                         + ie_len, GFP_KERNEL);
7567         if (!request) {
7568                 err = -ENOMEM;
7569                 goto unlock;
7570         }
7571
7572         if (n_ssids)
7573                 request->ssids = (void *)&request->channels[n_channels];
7574         request->n_ssids = n_ssids;
7575         if (ie_len) {
7576                 if (n_ssids)
7577                         request->ie = (void *)(request->ssids + n_ssids);
7578                 else
7579                         request->ie = (void *)(request->channels + n_channels);
7580         }
7581
7582         i = 0;
7583         if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7584                 /* user specified, bail out if channel not found */
7585                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) {
7586                         struct ieee80211_channel *chan;
7587
7588                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
7589
7590                         if (!chan) {
7591                                 err = -EINVAL;
7592                                 goto out_free;
7593                         }
7594
7595                         /* ignore disabled channels */
7596                         if (chan->flags & IEEE80211_CHAN_DISABLED)
7597                                 continue;
7598
7599                         request->channels[i] = chan;
7600                         i++;
7601                 }
7602         } else {
7603                 enum nl80211_band band;
7604
7605                 /* all channels */
7606                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
7607                         int j;
7608
7609                         if (!wiphy->bands[band])
7610                                 continue;
7611                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
7612                                 struct ieee80211_channel *chan;
7613
7614                                 chan = &wiphy->bands[band]->channels[j];
7615
7616                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
7617                                         continue;
7618
7619                                 request->channels[i] = chan;
7620                                 i++;
7621                         }
7622                 }
7623         }
7624
7625         if (!i) {
7626                 err = -EINVAL;
7627                 goto out_free;
7628         }
7629
7630         request->n_channels = i;
7631
7632         wdev_lock(wdev);
7633         if (!cfg80211_off_channel_oper_allowed(wdev)) {
7634                 struct ieee80211_channel *chan;
7635
7636                 if (request->n_channels != 1) {
7637                         wdev_unlock(wdev);
7638                         err = -EBUSY;
7639                         goto out_free;
7640                 }
7641
7642                 chan = request->channels[0];
7643                 if (chan->center_freq != wdev->chandef.chan->center_freq) {
7644                         wdev_unlock(wdev);
7645                         err = -EBUSY;
7646                         goto out_free;
7647                 }
7648         }
7649         wdev_unlock(wdev);
7650
7651         i = 0;
7652         if (n_ssids) {
7653                 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) {
7654                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
7655                                 err = -EINVAL;
7656                                 goto out_free;
7657                         }
7658                         request->ssids[i].ssid_len = nla_len(attr);
7659                         memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr));
7660                         i++;
7661                 }
7662         }
7663
7664         if (info->attrs[NL80211_ATTR_IE]) {
7665                 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
7666                 memcpy((void *)request->ie,
7667                        nla_data(info->attrs[NL80211_ATTR_IE]),
7668                        request->ie_len);
7669         }
7670
7671         for (i = 0; i < NUM_NL80211_BANDS; i++)
7672                 if (wiphy->bands[i])
7673                         request->rates[i] =
7674                                 (1 << wiphy->bands[i]->n_bitrates) - 1;
7675
7676         if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) {
7677                 nla_for_each_nested(attr,
7678                                     info->attrs[NL80211_ATTR_SCAN_SUPP_RATES],
7679                                     tmp) {
7680                         enum nl80211_band band = nla_type(attr);
7681
7682                         if (band < 0 || band >= NUM_NL80211_BANDS) {
7683                                 err = -EINVAL;
7684                                 goto out_free;
7685                         }
7686
7687                         if (!wiphy->bands[band])
7688                                 continue;
7689
7690                         err = ieee80211_get_ratemask(wiphy->bands[band],
7691                                                      nla_data(attr),
7692                                                      nla_len(attr),
7693                                                      &request->rates[band]);
7694                         if (err)
7695                                 goto out_free;
7696                 }
7697         }
7698
7699         if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) {
7700                 if (!wiphy_ext_feature_isset(wiphy,
7701                                         NL80211_EXT_FEATURE_SET_SCAN_DWELL)) {
7702                         err = -EOPNOTSUPP;
7703                         goto out_free;
7704                 }
7705
7706                 request->duration =
7707                         nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]);
7708                 request->duration_mandatory =
7709                         nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]);
7710         }
7711
7712         err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs,
7713                                        false);
7714         if (err)
7715                 goto out_free;
7716
7717         request->no_cck =
7718                 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
7719
7720         /* Initial implementation used NL80211_ATTR_MAC to set the specific
7721          * BSSID to scan for. This was problematic because that same attribute
7722          * was already used for another purpose (local random MAC address). The
7723          * NL80211_ATTR_BSSID attribute was added to fix this. For backwards
7724          * compatibility with older userspace components, also use the
7725          * NL80211_ATTR_MAC value here if it can be determined to be used for
7726          * the specific BSSID use case instead of the random MAC address
7727          * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use).
7728          */
7729         if (info->attrs[NL80211_ATTR_BSSID])
7730                 memcpy(request->bssid,
7731                        nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN);
7732         else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) &&
7733                  info->attrs[NL80211_ATTR_MAC])
7734                 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]),
7735                        ETH_ALEN);
7736         else
7737                 eth_broadcast_addr(request->bssid);
7738
7739         request->wdev = wdev;
7740         request->wiphy = &rdev->wiphy;
7741         request->scan_start = jiffies;
7742
7743         rdev->scan_req = request;
7744         err = rdev_scan(rdev, request);
7745
7746         if (!err) {
7747                 nl80211_send_scan_start(rdev, wdev);
7748                 if (wdev->netdev)
7749                         dev_hold(wdev->netdev);
7750         } else {
7751  out_free:
7752                 rdev->scan_req = NULL;
7753                 kfree(request);
7754         }
7755
7756  unlock:
7757         return err;
7758 }
7759
7760 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info)
7761 {
7762         struct cfg80211_registered_device *rdev = info->user_ptr[0];
7763         struct wireless_dev *wdev = info->user_ptr[1];
7764
7765         if (!rdev->ops->abort_scan)
7766                 return -EOPNOTSUPP;
7767
7768         if (rdev->scan_msg)
7769                 return 0;
7770
7771         if (!rdev->scan_req)
7772                 return -ENOENT;
7773
7774         rdev_abort_scan(rdev, wdev);
7775         return 0;
7776 }
7777
7778 static int
7779 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans,
7780                                struct cfg80211_sched_scan_request *request,
7781                                struct nlattr **attrs)
7782 {
7783         int tmp, err, i = 0;
7784         struct nlattr *attr;
7785
7786         if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7787                 u32 interval;
7788
7789                 /*
7790                  * If scan plans are not specified,
7791                  * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this
7792                  * case one scan plan will be set with the specified scan
7793                  * interval and infinite number of iterations.
7794                  */
7795                 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]);
7796                 if (!interval)
7797                         return -EINVAL;
7798
7799                 request->scan_plans[0].interval =
7800                         DIV_ROUND_UP(interval, MSEC_PER_SEC);
7801                 if (!request->scan_plans[0].interval)
7802                         return -EINVAL;
7803
7804                 if (request->scan_plans[0].interval >
7805                     wiphy->max_sched_scan_plan_interval)
7806                         request->scan_plans[0].interval =
7807                                 wiphy->max_sched_scan_plan_interval;
7808
7809                 return 0;
7810         }
7811
7812         nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) {
7813                 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1];
7814
7815                 if (WARN_ON(i >= n_plans))
7816                         return -EINVAL;
7817
7818                 err = nla_parse_nested_deprecated(plan,
7819                                                   NL80211_SCHED_SCAN_PLAN_MAX,
7820                                                   attr, nl80211_plan_policy,
7821                                                   NULL);
7822                 if (err)
7823                         return err;
7824
7825                 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL])
7826                         return -EINVAL;
7827
7828                 request->scan_plans[i].interval =
7829                         nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]);
7830                 if (!request->scan_plans[i].interval ||
7831                     request->scan_plans[i].interval >
7832                     wiphy->max_sched_scan_plan_interval)
7833                         return -EINVAL;
7834
7835                 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) {
7836                         request->scan_plans[i].iterations =
7837                                 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]);
7838                         if (!request->scan_plans[i].iterations ||
7839                             (request->scan_plans[i].iterations >
7840                              wiphy->max_sched_scan_plan_iterations))
7841                                 return -EINVAL;
7842                 } else if (i < n_plans - 1) {
7843                         /*
7844                          * All scan plans but the last one must specify
7845                          * a finite number of iterations
7846                          */
7847                         return -EINVAL;
7848                 }
7849
7850                 i++;
7851         }
7852
7853         /*
7854          * The last scan plan must not specify the number of
7855          * iterations, it is supposed to run infinitely
7856          */
7857         if (request->scan_plans[n_plans - 1].iterations)
7858                 return  -EINVAL;
7859
7860         return 0;
7861 }
7862
7863 static int
7864 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy,
7865                                        struct cfg80211_match_set *match_sets,
7866                                        struct nlattr *tb_band_rssi,
7867                                        s32 rssi_thold)
7868 {
7869         struct nlattr *attr;
7870         int i, tmp, ret = 0;
7871
7872         if (!wiphy_ext_feature_isset(wiphy,
7873                     NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) {
7874                 if (tb_band_rssi)
7875                         ret = -EOPNOTSUPP;
7876                 else
7877                         for (i = 0; i < NUM_NL80211_BANDS; i++)
7878                                 match_sets->per_band_rssi_thold[i] =
7879                                         NL80211_SCAN_RSSI_THOLD_OFF;
7880                 return ret;
7881         }
7882
7883         for (i = 0; i < NUM_NL80211_BANDS; i++)
7884                 match_sets->per_band_rssi_thold[i] = rssi_thold;
7885
7886         nla_for_each_nested(attr, tb_band_rssi, tmp) {
7887                 enum nl80211_band band = nla_type(attr);
7888
7889                 if (band < 0 || band >= NUM_NL80211_BANDS)
7890                         return -EINVAL;
7891
7892                 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr);
7893         }
7894
7895         return 0;
7896 }
7897
7898 static struct cfg80211_sched_scan_request *
7899 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev,
7900                          struct nlattr **attrs, int max_match_sets)
7901 {
7902         struct cfg80211_sched_scan_request *request;
7903         struct nlattr *attr;
7904         int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0;
7905         enum nl80211_band band;
7906         size_t ie_len;
7907         struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1];
7908         s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF;
7909
7910         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
7911                 n_channels = validate_scan_freqs(
7912                                 attrs[NL80211_ATTR_SCAN_FREQUENCIES]);
7913                 if (!n_channels)
7914                         return ERR_PTR(-EINVAL);
7915         } else {
7916                 n_channels = ieee80211_get_num_supported_channels(wiphy);
7917         }
7918
7919         if (attrs[NL80211_ATTR_SCAN_SSIDS])
7920                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
7921                                     tmp)
7922                         n_ssids++;
7923
7924         if (n_ssids > wiphy->max_sched_scan_ssids)
7925                 return ERR_PTR(-EINVAL);
7926
7927         /*
7928          * First, count the number of 'real' matchsets. Due to an issue with
7929          * the old implementation, matchsets containing only the RSSI attribute
7930          * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default'
7931          * RSSI for all matchsets, rather than their own matchset for reporting
7932          * all APs with a strong RSSI. This is needed to be compatible with
7933          * older userspace that treated a matchset with only the RSSI as the
7934          * global RSSI for all other matchsets - if there are other matchsets.
7935          */
7936         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
7937                 nla_for_each_nested(attr,
7938                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
7939                                     tmp) {
7940                         struct nlattr *rssi;
7941
7942                         err = nla_parse_nested_deprecated(tb,
7943                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
7944                                                           attr,
7945                                                           nl80211_match_policy,
7946                                                           NULL);
7947                         if (err)
7948                                 return ERR_PTR(err);
7949
7950                         /* SSID and BSSID are mutually exclusive */
7951                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] &&
7952                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID])
7953                                 return ERR_PTR(-EINVAL);
7954
7955                         /* add other standalone attributes here */
7956                         if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] ||
7957                             tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) {
7958                                 n_match_sets++;
7959                                 continue;
7960                         }
7961                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
7962                         if (rssi)
7963                                 default_match_rssi = nla_get_s32(rssi);
7964                 }
7965         }
7966
7967         /* However, if there's no other matchset, add the RSSI one */
7968         if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF)
7969                 n_match_sets = 1;
7970
7971         if (n_match_sets > max_match_sets)
7972                 return ERR_PTR(-EINVAL);
7973
7974         if (attrs[NL80211_ATTR_IE])
7975                 ie_len = nla_len(attrs[NL80211_ATTR_IE]);
7976         else
7977                 ie_len = 0;
7978
7979         if (ie_len > wiphy->max_sched_scan_ie_len)
7980                 return ERR_PTR(-EINVAL);
7981
7982         if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) {
7983                 /*
7984                  * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since
7985                  * each scan plan already specifies its own interval
7986                  */
7987                 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
7988                         return ERR_PTR(-EINVAL);
7989
7990                 nla_for_each_nested(attr,
7991                                     attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp)
7992                         n_plans++;
7993         } else {
7994                 /*
7995                  * The scan interval attribute is kept for backward
7996                  * compatibility. If no scan plans are specified and sched scan
7997                  * interval is specified, one scan plan will be set with this
7998                  * scan interval and infinite number of iterations.
7999                  */
8000                 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL])
8001                         return ERR_PTR(-EINVAL);
8002
8003                 n_plans = 1;
8004         }
8005
8006         if (!n_plans || n_plans > wiphy->max_sched_scan_plans)
8007                 return ERR_PTR(-EINVAL);
8008
8009         if (!wiphy_ext_feature_isset(
8010                     wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) &&
8011             (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] ||
8012              attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]))
8013                 return ERR_PTR(-EINVAL);
8014
8015         request = kzalloc(sizeof(*request)
8016                         + sizeof(*request->ssids) * n_ssids
8017                         + sizeof(*request->match_sets) * n_match_sets
8018                         + sizeof(*request->scan_plans) * n_plans
8019                         + sizeof(*request->channels) * n_channels
8020                         + ie_len, GFP_KERNEL);
8021         if (!request)
8022                 return ERR_PTR(-ENOMEM);
8023
8024         if (n_ssids)
8025                 request->ssids = (void *)&request->channels[n_channels];
8026         request->n_ssids = n_ssids;
8027         if (ie_len) {
8028                 if (n_ssids)
8029                         request->ie = (void *)(request->ssids + n_ssids);
8030                 else
8031                         request->ie = (void *)(request->channels + n_channels);
8032         }
8033
8034         if (n_match_sets) {
8035                 if (request->ie)
8036                         request->match_sets = (void *)(request->ie + ie_len);
8037                 else if (n_ssids)
8038                         request->match_sets =
8039                                 (void *)(request->ssids + n_ssids);
8040                 else
8041                         request->match_sets =
8042                                 (void *)(request->channels + n_channels);
8043         }
8044         request->n_match_sets = n_match_sets;
8045
8046         if (n_match_sets)
8047                 request->scan_plans = (void *)(request->match_sets +
8048                                                n_match_sets);
8049         else if (request->ie)
8050                 request->scan_plans = (void *)(request->ie + ie_len);
8051         else if (n_ssids)
8052                 request->scan_plans = (void *)(request->ssids + n_ssids);
8053         else
8054                 request->scan_plans = (void *)(request->channels + n_channels);
8055
8056         request->n_scan_plans = n_plans;
8057
8058         i = 0;
8059         if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) {
8060                 /* user specified, bail out if channel not found */
8061                 nla_for_each_nested(attr,
8062                                     attrs[NL80211_ATTR_SCAN_FREQUENCIES],
8063                                     tmp) {
8064                         struct ieee80211_channel *chan;
8065
8066                         chan = ieee80211_get_channel(wiphy, nla_get_u32(attr));
8067
8068                         if (!chan) {
8069                                 err = -EINVAL;
8070                                 goto out_free;
8071                         }
8072
8073                         /* ignore disabled channels */
8074                         if (chan->flags & IEEE80211_CHAN_DISABLED)
8075                                 continue;
8076
8077                         request->channels[i] = chan;
8078                         i++;
8079                 }
8080         } else {
8081                 /* all channels */
8082                 for (band = 0; band < NUM_NL80211_BANDS; band++) {
8083                         int j;
8084
8085                         if (!wiphy->bands[band])
8086                                 continue;
8087                         for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
8088                                 struct ieee80211_channel *chan;
8089
8090                                 chan = &wiphy->bands[band]->channels[j];
8091
8092                                 if (chan->flags & IEEE80211_CHAN_DISABLED)
8093                                         continue;
8094
8095                                 request->channels[i] = chan;
8096                                 i++;
8097                         }
8098                 }
8099         }
8100
8101         if (!i) {
8102                 err = -EINVAL;
8103                 goto out_free;
8104         }
8105
8106         request->n_channels = i;
8107
8108         i = 0;
8109         if (n_ssids) {
8110                 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS],
8111                                     tmp) {
8112                         if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) {
8113                                 err = -EINVAL;
8114                                 goto out_free;
8115                         }
8116                         request->ssids[i].ssid_len = nla_len(attr);
8117                         memcpy(request->ssids[i].ssid, nla_data(attr),
8118                                nla_len(attr));
8119                         i++;
8120                 }
8121         }
8122
8123         i = 0;
8124         if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) {
8125                 nla_for_each_nested(attr,
8126                                     attrs[NL80211_ATTR_SCHED_SCAN_MATCH],
8127                                     tmp) {
8128                         struct nlattr *ssid, *bssid, *rssi;
8129
8130                         err = nla_parse_nested_deprecated(tb,
8131                                                           NL80211_SCHED_SCAN_MATCH_ATTR_MAX,
8132                                                           attr,
8133                                                           nl80211_match_policy,
8134                                                           NULL);
8135                         if (err)
8136                                 goto out_free;
8137                         ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID];
8138                         bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID];
8139
8140                         if (!ssid && !bssid) {
8141                                 i++;
8142                                 continue;
8143                         }
8144
8145                         if (WARN_ON(i >= n_match_sets)) {
8146                                 /* this indicates a programming error,
8147                                  * the loop above should have verified
8148                                  * things properly
8149                                  */
8150                                 err = -EINVAL;
8151                                 goto out_free;
8152                         }
8153
8154                         if (ssid) {
8155                                 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) {
8156                                         err = -EINVAL;
8157                                         goto out_free;
8158                                 }
8159                                 memcpy(request->match_sets[i].ssid.ssid,
8160                                        nla_data(ssid), nla_len(ssid));
8161                                 request->match_sets[i].ssid.ssid_len =
8162                                         nla_len(ssid);
8163                         }
8164                         if (bssid) {
8165                                 if (nla_len(bssid) != ETH_ALEN) {
8166                                         err = -EINVAL;
8167                                         goto out_free;
8168                                 }
8169                                 memcpy(request->match_sets[i].bssid,
8170                                        nla_data(bssid), ETH_ALEN);
8171                         }
8172
8173                         /* special attribute - old implementation w/a */
8174                         request->match_sets[i].rssi_thold = default_match_rssi;
8175                         rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI];
8176                         if (rssi)
8177                                 request->match_sets[i].rssi_thold =
8178                                         nla_get_s32(rssi);
8179
8180                         /* Parse per band RSSI attribute */
8181                         err = nl80211_parse_sched_scan_per_band_rssi(wiphy,
8182                                 &request->match_sets[i],
8183                                 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI],
8184                                 request->match_sets[i].rssi_thold);
8185                         if (err)
8186                                 goto out_free;
8187
8188                         i++;
8189                 }
8190
8191                 /* there was no other matchset, so the RSSI one is alone */
8192                 if (i == 0 && n_match_sets)
8193                         request->match_sets[0].rssi_thold = default_match_rssi;
8194
8195                 request->min_rssi_thold = INT_MAX;
8196                 for (i = 0; i < n_match_sets; i++)
8197                         request->min_rssi_thold =
8198                                 min(request->match_sets[i].rssi_thold,
8199                                     request->min_rssi_thold);
8200         } else {
8201                 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF;
8202         }
8203
8204         if (ie_len) {
8205                 request->ie_len = ie_len;
8206                 memcpy((void *)request->ie,
8207                        nla_data(attrs[NL80211_ATTR_IE]),
8208                        request->ie_len);
8209         }
8210
8211         err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true);
8212         if (err)
8213                 goto out_free;
8214
8215         if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY])
8216                 request->delay =
8217                         nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]);
8218
8219         if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) {
8220                 request->relative_rssi = nla_get_s8(
8221                         attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]);
8222                 request->relative_rssi_set = true;
8223         }
8224
8225         if (request->relative_rssi_set &&
8226             attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) {
8227                 struct nl80211_bss_select_rssi_adjust *rssi_adjust;
8228
8229                 rssi_adjust = nla_data(
8230                         attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]);
8231                 request->rssi_adjust.band = rssi_adjust->band;
8232                 request->rssi_adjust.delta = rssi_adjust->delta;
8233                 if (!is_band_valid(wiphy, request->rssi_adjust.band)) {
8234                         err = -EINVAL;
8235                         goto out_free;
8236                 }
8237         }
8238
8239         err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs);
8240         if (err)
8241                 goto out_free;
8242
8243         request->scan_start = jiffies;
8244
8245         return request;
8246
8247 out_free:
8248         kfree(request);
8249         return ERR_PTR(err);
8250 }
8251
8252 static int nl80211_start_sched_scan(struct sk_buff *skb,
8253                                     struct genl_info *info)
8254 {
8255         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8256         struct net_device *dev = info->user_ptr[1];
8257         struct wireless_dev *wdev = dev->ieee80211_ptr;
8258         struct cfg80211_sched_scan_request *sched_scan_req;
8259         bool want_multi;
8260         int err;
8261
8262         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start)
8263                 return -EOPNOTSUPP;
8264
8265         want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI];
8266         err = cfg80211_sched_scan_req_possible(rdev, want_multi);
8267         if (err)
8268                 return err;
8269
8270         sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev,
8271                                                   info->attrs,
8272                                                   rdev->wiphy.max_match_sets);
8273
8274         err = PTR_ERR_OR_ZERO(sched_scan_req);
8275         if (err)
8276                 goto out_err;
8277
8278         /* leave request id zero for legacy request
8279          * or if driver does not support multi-scheduled scan
8280          */
8281         if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1)
8282                 sched_scan_req->reqid = cfg80211_assign_cookie(rdev);
8283
8284         err = rdev_sched_scan_start(rdev, dev, sched_scan_req);
8285         if (err)
8286                 goto out_free;
8287
8288         sched_scan_req->dev = dev;
8289         sched_scan_req->wiphy = &rdev->wiphy;
8290
8291         if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
8292                 sched_scan_req->owner_nlportid = info->snd_portid;
8293
8294         cfg80211_add_sched_scan_req(rdev, sched_scan_req);
8295
8296         nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN);
8297         return 0;
8298
8299 out_free:
8300         kfree(sched_scan_req);
8301 out_err:
8302         return err;
8303 }
8304
8305 static int nl80211_stop_sched_scan(struct sk_buff *skb,
8306                                    struct genl_info *info)
8307 {
8308         struct cfg80211_sched_scan_request *req;
8309         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8310         u64 cookie;
8311
8312         if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop)
8313                 return -EOPNOTSUPP;
8314
8315         if (info->attrs[NL80211_ATTR_COOKIE]) {
8316                 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
8317                 return __cfg80211_stop_sched_scan(rdev, cookie, false);
8318         }
8319
8320         req = list_first_or_null_rcu(&rdev->sched_scan_req_list,
8321                                      struct cfg80211_sched_scan_request,
8322                                      list);
8323         if (!req || req->reqid ||
8324             (req->owner_nlportid &&
8325              req->owner_nlportid != info->snd_portid))
8326                 return -ENOENT;
8327
8328         return cfg80211_stop_sched_scan_req(rdev, req, false);
8329 }
8330
8331 static int nl80211_start_radar_detection(struct sk_buff *skb,
8332                                          struct genl_info *info)
8333 {
8334         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8335         struct net_device *dev = info->user_ptr[1];
8336         struct wireless_dev *wdev = dev->ieee80211_ptr;
8337         struct wiphy *wiphy = wdev->wiphy;
8338         struct cfg80211_chan_def chandef;
8339         enum nl80211_dfs_regions dfs_region;
8340         unsigned int cac_time_ms;
8341         int err;
8342
8343         dfs_region = reg_get_dfs_region(wiphy);
8344         if (dfs_region == NL80211_DFS_UNSET)
8345                 return -EINVAL;
8346
8347         err = nl80211_parse_chandef(rdev, info, &chandef);
8348         if (err)
8349                 return err;
8350
8351         if (netif_carrier_ok(dev))
8352                 return -EBUSY;
8353
8354         if (wdev->cac_started)
8355                 return -EBUSY;
8356
8357         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8358         if (err < 0)
8359                 return err;
8360
8361         if (err == 0)
8362                 return -EINVAL;
8363
8364         if (!cfg80211_chandef_dfs_usable(wiphy, &chandef))
8365                 return -EINVAL;
8366
8367         /* CAC start is offloaded to HW and can't be started manually */
8368         if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD))
8369                 return -EOPNOTSUPP;
8370
8371         if (!rdev->ops->start_radar_detection)
8372                 return -EOPNOTSUPP;
8373
8374         cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef);
8375         if (WARN_ON(!cac_time_ms))
8376                 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS;
8377
8378         err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms);
8379         if (!err) {
8380                 wdev->chandef = chandef;
8381                 wdev->cac_started = true;
8382                 wdev->cac_start_time = jiffies;
8383                 wdev->cac_time_ms = cac_time_ms;
8384         }
8385         return err;
8386 }
8387
8388 static int nl80211_notify_radar_detection(struct sk_buff *skb,
8389                                           struct genl_info *info)
8390 {
8391         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8392         struct net_device *dev = info->user_ptr[1];
8393         struct wireless_dev *wdev = dev->ieee80211_ptr;
8394         struct wiphy *wiphy = wdev->wiphy;
8395         struct cfg80211_chan_def chandef;
8396         enum nl80211_dfs_regions dfs_region;
8397         int err;
8398
8399         dfs_region = reg_get_dfs_region(wiphy);
8400         if (dfs_region == NL80211_DFS_UNSET) {
8401                 GENL_SET_ERR_MSG(info,
8402                                  "DFS Region is not set. Unexpected Radar indication");
8403                 return -EINVAL;
8404         }
8405
8406         err = nl80211_parse_chandef(rdev, info, &chandef);
8407         if (err) {
8408                 GENL_SET_ERR_MSG(info, "Unable to extract chandef info");
8409                 return err;
8410         }
8411
8412         err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype);
8413         if (err < 0) {
8414                 GENL_SET_ERR_MSG(info, "chandef is invalid");
8415                 return err;
8416         }
8417
8418         if (err == 0) {
8419                 GENL_SET_ERR_MSG(info,
8420                                  "Unexpected Radar indication for chandef/iftype");
8421                 return -EINVAL;
8422         }
8423
8424         /* Do not process this notification if radar is already detected
8425          * by kernel on this channel, and return success.
8426          */
8427         if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE)
8428                 return 0;
8429
8430         cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE);
8431
8432         cfg80211_sched_dfs_chan_update(rdev);
8433
8434         rdev->radar_chandef = chandef;
8435
8436         /* Propagate this notification to other radios as well */
8437         queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk);
8438
8439         return 0;
8440 }
8441
8442 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
8443 {
8444         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8445         struct net_device *dev = info->user_ptr[1];
8446         struct wireless_dev *wdev = dev->ieee80211_ptr;
8447         struct cfg80211_csa_settings params;
8448         /* csa_attrs is defined static to avoid waste of stack size - this
8449          * function is called under RTNL lock, so this should not be a problem.
8450          */
8451         static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
8452         int err;
8453         bool need_new_beacon = false;
8454         bool need_handle_dfs_flag = true;
8455         int len, i;
8456         u32 cs_count;
8457
8458         if (!rdev->ops->channel_switch ||
8459             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH))
8460                 return -EOPNOTSUPP;
8461
8462         switch (dev->ieee80211_ptr->iftype) {
8463         case NL80211_IFTYPE_AP:
8464         case NL80211_IFTYPE_P2P_GO:
8465                 need_new_beacon = true;
8466                 /* For all modes except AP the handle_dfs flag needs to be
8467                  * supplied to tell the kernel that userspace will handle radar
8468                  * events when they happen. Otherwise a switch to a channel
8469                  * requiring DFS will be rejected.
8470                  */
8471                 need_handle_dfs_flag = false;
8472
8473                 /* useless if AP is not running */
8474                 if (!wdev->beacon_interval)
8475                         return -ENOTCONN;
8476                 break;
8477         case NL80211_IFTYPE_ADHOC:
8478                 if (!wdev->ssid_len)
8479                         return -ENOTCONN;
8480                 break;
8481         case NL80211_IFTYPE_MESH_POINT:
8482                 if (!wdev->mesh_id_len)
8483                         return -ENOTCONN;
8484                 break;
8485         default:
8486                 return -EOPNOTSUPP;
8487         }
8488
8489         memset(&params, 0, sizeof(params));
8490         params.beacon_csa.ftm_responder = -1;
8491
8492         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
8493             !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT])
8494                 return -EINVAL;
8495
8496         /* only important for AP, IBSS and mesh create IEs internally */
8497         if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES])
8498                 return -EINVAL;
8499
8500         /* Even though the attribute is u32, the specification says
8501          * u8, so let's make sure we don't overflow.
8502          */
8503         cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]);
8504         if (cs_count > 255)
8505                 return -EINVAL;
8506
8507         params.count = cs_count;
8508
8509         if (!need_new_beacon)
8510                 goto skip_beacons;
8511
8512         err = nl80211_parse_beacon(rdev, info->attrs, &params.beacon_after);
8513         if (err)
8514                 return err;
8515
8516         err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
8517                                           info->attrs[NL80211_ATTR_CSA_IES],
8518                                           nl80211_policy, info->extack);
8519         if (err)
8520                 return err;
8521
8522         err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
8523         if (err)
8524                 return err;
8525
8526         if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON])
8527                 return -EINVAL;
8528
8529         len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8530         if (!len || (len % sizeof(u16)))
8531                 return -EINVAL;
8532
8533         params.n_counter_offsets_beacon = len / sizeof(u16);
8534         if (rdev->wiphy.max_num_csa_counters &&
8535             (params.n_counter_offsets_beacon >
8536              rdev->wiphy.max_num_csa_counters))
8537                 return -EINVAL;
8538
8539         params.counter_offsets_beacon =
8540                 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]);
8541
8542         /* sanity checks - counters should fit and be the same */
8543         for (i = 0; i < params.n_counter_offsets_beacon; i++) {
8544                 u16 offset = params.counter_offsets_beacon[i];
8545
8546                 if (offset >= params.beacon_csa.tail_len)
8547                         return -EINVAL;
8548
8549                 if (params.beacon_csa.tail[offset] != params.count)
8550                         return -EINVAL;
8551         }
8552
8553         if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) {
8554                 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8555                 if (!len || (len % sizeof(u16)))
8556                         return -EINVAL;
8557
8558                 params.n_counter_offsets_presp = len / sizeof(u16);
8559                 if (rdev->wiphy.max_num_csa_counters &&
8560                     (params.n_counter_offsets_presp >
8561                      rdev->wiphy.max_num_csa_counters))
8562                         return -EINVAL;
8563
8564                 params.counter_offsets_presp =
8565                         nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]);
8566
8567                 /* sanity checks - counters should fit and be the same */
8568                 for (i = 0; i < params.n_counter_offsets_presp; i++) {
8569                         u16 offset = params.counter_offsets_presp[i];
8570
8571                         if (offset >= params.beacon_csa.probe_resp_len)
8572                                 return -EINVAL;
8573
8574                         if (params.beacon_csa.probe_resp[offset] !=
8575                             params.count)
8576                                 return -EINVAL;
8577                 }
8578         }
8579
8580 skip_beacons:
8581         err = nl80211_parse_chandef(rdev, info, &params.chandef);
8582         if (err)
8583                 return err;
8584
8585         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
8586                                            wdev->iftype))
8587                 return -EINVAL;
8588
8589         err = cfg80211_chandef_dfs_required(wdev->wiphy,
8590                                             &params.chandef,
8591                                             wdev->iftype);
8592         if (err < 0)
8593                 return err;
8594
8595         if (err > 0) {
8596                 params.radar_required = true;
8597                 if (need_handle_dfs_flag &&
8598                     !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
8599                         return -EINVAL;
8600                 }
8601         }
8602
8603         if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX])
8604                 params.block_tx = true;
8605
8606         wdev_lock(wdev);
8607         err = rdev_channel_switch(rdev, dev, &params);
8608         wdev_unlock(wdev);
8609
8610         return err;
8611 }
8612
8613 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb,
8614                             u32 seq, int flags,
8615                             struct cfg80211_registered_device *rdev,
8616                             struct wireless_dev *wdev,
8617                             struct cfg80211_internal_bss *intbss)
8618 {
8619         struct cfg80211_bss *res = &intbss->pub;
8620         const struct cfg80211_bss_ies *ies;
8621         void *hdr;
8622         struct nlattr *bss;
8623
8624         ASSERT_WDEV_LOCK(wdev);
8625
8626         hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags,
8627                              NL80211_CMD_NEW_SCAN_RESULTS);
8628         if (!hdr)
8629                 return -1;
8630
8631         genl_dump_check_consistent(cb, hdr);
8632
8633         if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation))
8634                 goto nla_put_failure;
8635         if (wdev->netdev &&
8636             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex))
8637                 goto nla_put_failure;
8638         if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
8639                               NL80211_ATTR_PAD))
8640                 goto nla_put_failure;
8641
8642         bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS);
8643         if (!bss)
8644                 goto nla_put_failure;
8645         if ((!is_zero_ether_addr(res->bssid) &&
8646              nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid)))
8647                 goto nla_put_failure;
8648
8649         rcu_read_lock();
8650         /* indicate whether we have probe response data or not */
8651         if (rcu_access_pointer(res->proberesp_ies) &&
8652             nla_put_flag(msg, NL80211_BSS_PRESP_DATA))
8653                 goto fail_unlock_rcu;
8654
8655         /* this pointer prefers to be pointed to probe response data
8656          * but is always valid
8657          */
8658         ies = rcu_dereference(res->ies);
8659         if (ies) {
8660                 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf,
8661                                       NL80211_BSS_PAD))
8662                         goto fail_unlock_rcu;
8663                 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS,
8664                                         ies->len, ies->data))
8665                         goto fail_unlock_rcu;
8666         }
8667
8668         /* and this pointer is always (unless driver didn't know) beacon data */
8669         ies = rcu_dereference(res->beacon_ies);
8670         if (ies && ies->from_beacon) {
8671                 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf,
8672                                       NL80211_BSS_PAD))
8673                         goto fail_unlock_rcu;
8674                 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES,
8675                                         ies->len, ies->data))
8676                         goto fail_unlock_rcu;
8677         }
8678         rcu_read_unlock();
8679
8680         if (res->beacon_interval &&
8681             nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval))
8682                 goto nla_put_failure;
8683         if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) ||
8684             nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) ||
8685             nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) ||
8686             nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO,
8687                         jiffies_to_msecs(jiffies - intbss->ts)))
8688                 goto nla_put_failure;
8689
8690         if (intbss->parent_tsf &&
8691             (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF,
8692                                intbss->parent_tsf, NL80211_BSS_PAD) ||
8693              nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN,
8694                      intbss->parent_bssid)))
8695                 goto nla_put_failure;
8696
8697         if (intbss->ts_boottime &&
8698             nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME,
8699                               intbss->ts_boottime, NL80211_BSS_PAD))
8700                 goto nla_put_failure;
8701
8702         if (!nl80211_put_signal(msg, intbss->pub.chains,
8703                                 intbss->pub.chain_signal,
8704                                 NL80211_BSS_CHAIN_SIGNAL))
8705                 goto nla_put_failure;
8706
8707         switch (rdev->wiphy.signal_type) {
8708         case CFG80211_SIGNAL_TYPE_MBM:
8709                 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal))
8710                         goto nla_put_failure;
8711                 break;
8712         case CFG80211_SIGNAL_TYPE_UNSPEC:
8713                 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal))
8714                         goto nla_put_failure;
8715                 break;
8716         default:
8717                 break;
8718         }
8719
8720         switch (wdev->iftype) {
8721         case NL80211_IFTYPE_P2P_CLIENT:
8722         case NL80211_IFTYPE_STATION:
8723                 if (intbss == wdev->current_bss &&
8724                     nla_put_u32(msg, NL80211_BSS_STATUS,
8725                                 NL80211_BSS_STATUS_ASSOCIATED))
8726                         goto nla_put_failure;
8727                 break;
8728         case NL80211_IFTYPE_ADHOC:
8729                 if (intbss == wdev->current_bss &&
8730                     nla_put_u32(msg, NL80211_BSS_STATUS,
8731                                 NL80211_BSS_STATUS_IBSS_JOINED))
8732                         goto nla_put_failure;
8733                 break;
8734         default:
8735                 break;
8736         }
8737
8738         nla_nest_end(msg, bss);
8739
8740         genlmsg_end(msg, hdr);
8741         return 0;
8742
8743  fail_unlock_rcu:
8744         rcu_read_unlock();
8745  nla_put_failure:
8746         genlmsg_cancel(msg, hdr);
8747         return -EMSGSIZE;
8748 }
8749
8750 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
8751 {
8752         struct cfg80211_registered_device *rdev;
8753         struct cfg80211_internal_bss *scan;
8754         struct wireless_dev *wdev;
8755         int start = cb->args[2], idx = 0;
8756         int err;
8757
8758         rtnl_lock();
8759         err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8760         if (err) {
8761                 rtnl_unlock();
8762                 return err;
8763         }
8764
8765         wdev_lock(wdev);
8766         spin_lock_bh(&rdev->bss_lock);
8767
8768         /*
8769          * dump_scan will be called multiple times to break up the scan results
8770          * into multiple messages.  It is unlikely that any more bss-es will be
8771          * expired after the first call, so only call only call this on the
8772          * first dump_scan invocation.
8773          */
8774         if (start == 0)
8775                 cfg80211_bss_expire(rdev);
8776
8777         cb->seq = rdev->bss_generation;
8778
8779         list_for_each_entry(scan, &rdev->bss_list, list) {
8780                 if (++idx <= start)
8781                         continue;
8782                 if (nl80211_send_bss(skb, cb,
8783                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8784                                 rdev, wdev, scan) < 0) {
8785                         idx--;
8786                         break;
8787                 }
8788         }
8789
8790         spin_unlock_bh(&rdev->bss_lock);
8791         wdev_unlock(wdev);
8792
8793         cb->args[2] = idx;
8794         rtnl_unlock();
8795
8796         return skb->len;
8797 }
8798
8799 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq,
8800                                int flags, struct net_device *dev,
8801                                bool allow_radio_stats,
8802                                struct survey_info *survey)
8803 {
8804         void *hdr;
8805         struct nlattr *infoattr;
8806
8807         /* skip radio stats if userspace didn't request them */
8808         if (!survey->channel && !allow_radio_stats)
8809                 return 0;
8810
8811         hdr = nl80211hdr_put(msg, portid, seq, flags,
8812                              NL80211_CMD_NEW_SURVEY_RESULTS);
8813         if (!hdr)
8814                 return -ENOMEM;
8815
8816         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
8817                 goto nla_put_failure;
8818
8819         infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO);
8820         if (!infoattr)
8821                 goto nla_put_failure;
8822
8823         if (survey->channel &&
8824             nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY,
8825                         survey->channel->center_freq))
8826                 goto nla_put_failure;
8827
8828         if ((survey->filled & SURVEY_INFO_NOISE_DBM) &&
8829             nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise))
8830                 goto nla_put_failure;
8831         if ((survey->filled & SURVEY_INFO_IN_USE) &&
8832             nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE))
8833                 goto nla_put_failure;
8834         if ((survey->filled & SURVEY_INFO_TIME) &&
8835             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME,
8836                         survey->time, NL80211_SURVEY_INFO_PAD))
8837                 goto nla_put_failure;
8838         if ((survey->filled & SURVEY_INFO_TIME_BUSY) &&
8839             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY,
8840                               survey->time_busy, NL80211_SURVEY_INFO_PAD))
8841                 goto nla_put_failure;
8842         if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) &&
8843             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY,
8844                               survey->time_ext_busy, NL80211_SURVEY_INFO_PAD))
8845                 goto nla_put_failure;
8846         if ((survey->filled & SURVEY_INFO_TIME_RX) &&
8847             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX,
8848                               survey->time_rx, NL80211_SURVEY_INFO_PAD))
8849                 goto nla_put_failure;
8850         if ((survey->filled & SURVEY_INFO_TIME_TX) &&
8851             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX,
8852                               survey->time_tx, NL80211_SURVEY_INFO_PAD))
8853                 goto nla_put_failure;
8854         if ((survey->filled & SURVEY_INFO_TIME_SCAN) &&
8855             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN,
8856                               survey->time_scan, NL80211_SURVEY_INFO_PAD))
8857                 goto nla_put_failure;
8858         if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) &&
8859             nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX,
8860                               survey->time_bss_rx, NL80211_SURVEY_INFO_PAD))
8861                 goto nla_put_failure;
8862
8863         nla_nest_end(msg, infoattr);
8864
8865         genlmsg_end(msg, hdr);
8866         return 0;
8867
8868  nla_put_failure:
8869         genlmsg_cancel(msg, hdr);
8870         return -EMSGSIZE;
8871 }
8872
8873 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
8874 {
8875         struct nlattr **attrbuf;
8876         struct survey_info survey;
8877         struct cfg80211_registered_device *rdev;
8878         struct wireless_dev *wdev;
8879         int survey_idx = cb->args[2];
8880         int res;
8881         bool radio_stats;
8882
8883         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
8884         if (!attrbuf)
8885                 return -ENOMEM;
8886
8887         rtnl_lock();
8888         res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
8889         if (res)
8890                 goto out_err;
8891
8892         /* prepare_wdev_dump parsed the attributes */
8893         radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
8894
8895         if (!wdev->netdev) {
8896                 res = -EINVAL;
8897                 goto out_err;
8898         }
8899
8900         if (!rdev->ops->dump_survey) {
8901                 res = -EOPNOTSUPP;
8902                 goto out_err;
8903         }
8904
8905         while (1) {
8906                 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey);
8907                 if (res == -ENOENT)
8908                         break;
8909                 if (res)
8910                         goto out_err;
8911
8912                 /* don't send disabled channels, but do send non-channel data */
8913                 if (survey.channel &&
8914                     survey.channel->flags & IEEE80211_CHAN_DISABLED) {
8915                         survey_idx++;
8916                         continue;
8917                 }
8918
8919                 if (nl80211_send_survey(skb,
8920                                 NETLINK_CB(cb->skb).portid,
8921                                 cb->nlh->nlmsg_seq, NLM_F_MULTI,
8922                                 wdev->netdev, radio_stats, &survey) < 0)
8923                         goto out;
8924                 survey_idx++;
8925         }
8926
8927  out:
8928         cb->args[2] = survey_idx;
8929         res = skb->len;
8930  out_err:
8931         kfree(attrbuf);
8932         rtnl_unlock();
8933         return res;
8934 }
8935
8936 static bool nl80211_valid_wpa_versions(u32 wpa_versions)
8937 {
8938         return !(wpa_versions & ~(NL80211_WPA_VERSION_1 |
8939                                   NL80211_WPA_VERSION_2 |
8940                                   NL80211_WPA_VERSION_3));
8941 }
8942
8943 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info)
8944 {
8945         struct cfg80211_registered_device *rdev = info->user_ptr[0];
8946         struct net_device *dev = info->user_ptr[1];
8947         struct ieee80211_channel *chan;
8948         const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL;
8949         int err, ssid_len, ie_len = 0, auth_data_len = 0;
8950         enum nl80211_auth_type auth_type;
8951         struct key_parse key;
8952         bool local_state_change;
8953
8954         if (!info->attrs[NL80211_ATTR_MAC])
8955                 return -EINVAL;
8956
8957         if (!info->attrs[NL80211_ATTR_AUTH_TYPE])
8958                 return -EINVAL;
8959
8960         if (!info->attrs[NL80211_ATTR_SSID])
8961                 return -EINVAL;
8962
8963         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
8964                 return -EINVAL;
8965
8966         err = nl80211_parse_key(info, &key);
8967         if (err)
8968                 return err;
8969
8970         if (key.idx >= 0) {
8971                 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP)
8972                         return -EINVAL;
8973                 if (!key.p.key || !key.p.key_len)
8974                         return -EINVAL;
8975                 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 ||
8976                      key.p.key_len != WLAN_KEY_LEN_WEP40) &&
8977                     (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 ||
8978                      key.p.key_len != WLAN_KEY_LEN_WEP104))
8979                         return -EINVAL;
8980                 if (key.idx > 3)
8981                         return -EINVAL;
8982         } else {
8983                 key.p.key_len = 0;
8984                 key.p.key = NULL;
8985         }
8986
8987         if (key.idx >= 0) {
8988                 int i;
8989                 bool ok = false;
8990
8991                 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) {
8992                         if (key.p.cipher == rdev->wiphy.cipher_suites[i]) {
8993                                 ok = true;
8994                                 break;
8995                         }
8996                 }
8997                 if (!ok)
8998                         return -EINVAL;
8999         }
9000
9001         if (!rdev->ops->auth)
9002                 return -EOPNOTSUPP;
9003
9004         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9005             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9006                 return -EOPNOTSUPP;
9007
9008         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9009         chan = nl80211_get_valid_chan(&rdev->wiphy,
9010                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9011         if (!chan)
9012                 return -EINVAL;
9013
9014         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9015         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9016
9017         if (info->attrs[NL80211_ATTR_IE]) {
9018                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9019                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9020         }
9021
9022         auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9023         if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE))
9024                 return -EINVAL;
9025
9026         if ((auth_type == NL80211_AUTHTYPE_SAE ||
9027              auth_type == NL80211_AUTHTYPE_FILS_SK ||
9028              auth_type == NL80211_AUTHTYPE_FILS_SK_PFS ||
9029              auth_type == NL80211_AUTHTYPE_FILS_PK) &&
9030             !info->attrs[NL80211_ATTR_AUTH_DATA])
9031                 return -EINVAL;
9032
9033         if (info->attrs[NL80211_ATTR_AUTH_DATA]) {
9034                 if (auth_type != NL80211_AUTHTYPE_SAE &&
9035                     auth_type != NL80211_AUTHTYPE_FILS_SK &&
9036                     auth_type != NL80211_AUTHTYPE_FILS_SK_PFS &&
9037                     auth_type != NL80211_AUTHTYPE_FILS_PK)
9038                         return -EINVAL;
9039                 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]);
9040                 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]);
9041                 /* need to include at least Auth Transaction and Status Code */
9042                 if (auth_data_len < 4)
9043                         return -EINVAL;
9044         }
9045
9046         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9047
9048         /*
9049          * Since we no longer track auth state, ignore
9050          * requests to only change local state.
9051          */
9052         if (local_state_change)
9053                 return 0;
9054
9055         wdev_lock(dev->ieee80211_ptr);
9056         err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid,
9057                                  ssid, ssid_len, ie, ie_len,
9058                                  key.p.key, key.p.key_len, key.idx,
9059                                  auth_data, auth_data_len);
9060         wdev_unlock(dev->ieee80211_ptr);
9061         return err;
9062 }
9063
9064 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev,
9065                                      struct genl_info *info)
9066 {
9067         if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9068                 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set");
9069                 return -EINVAL;
9070         }
9071
9072         if (!rdev->ops->tx_control_port ||
9073             !wiphy_ext_feature_isset(&rdev->wiphy,
9074                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
9075                 return -EOPNOTSUPP;
9076
9077         return 0;
9078 }
9079
9080 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev,
9081                                    struct genl_info *info,
9082                                    struct cfg80211_crypto_settings *settings,
9083                                    int cipher_limit)
9084 {
9085         memset(settings, 0, sizeof(*settings));
9086
9087         settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT];
9088
9089         if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
9090                 u16 proto;
9091
9092                 proto = nla_get_u16(
9093                         info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
9094                 settings->control_port_ethertype = cpu_to_be16(proto);
9095                 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) &&
9096                     proto != ETH_P_PAE)
9097                         return -EINVAL;
9098                 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT])
9099                         settings->control_port_no_encrypt = true;
9100         } else
9101                 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE);
9102
9103         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9104                 int r = validate_pae_over_nl80211(rdev, info);
9105
9106                 if (r < 0)
9107                         return r;
9108
9109                 settings->control_port_over_nl80211 = true;
9110         }
9111
9112         if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) {
9113                 void *data;
9114                 int len, i;
9115
9116                 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9117                 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]);
9118                 settings->n_ciphers_pairwise = len / sizeof(u32);
9119
9120                 if (len % sizeof(u32))
9121                         return -EINVAL;
9122
9123                 if (settings->n_ciphers_pairwise > cipher_limit)
9124                         return -EINVAL;
9125
9126                 memcpy(settings->ciphers_pairwise, data, len);
9127
9128                 for (i = 0; i < settings->n_ciphers_pairwise; i++)
9129                         if (!cfg80211_supported_cipher_suite(
9130                                         &rdev->wiphy,
9131                                         settings->ciphers_pairwise[i]))
9132                                 return -EINVAL;
9133         }
9134
9135         if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) {
9136                 settings->cipher_group =
9137                         nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]);
9138                 if (!cfg80211_supported_cipher_suite(&rdev->wiphy,
9139                                                      settings->cipher_group))
9140                         return -EINVAL;
9141         }
9142
9143         if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) {
9144                 settings->wpa_versions =
9145                         nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]);
9146                 if (!nl80211_valid_wpa_versions(settings->wpa_versions))
9147                         return -EINVAL;
9148         }
9149
9150         if (info->attrs[NL80211_ATTR_AKM_SUITES]) {
9151                 void *data;
9152                 int len;
9153
9154                 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]);
9155                 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]);
9156                 settings->n_akm_suites = len / sizeof(u32);
9157
9158                 if (len % sizeof(u32))
9159                         return -EINVAL;
9160
9161                 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES)
9162                         return -EINVAL;
9163
9164                 memcpy(settings->akm_suites, data, len);
9165         }
9166
9167         if (info->attrs[NL80211_ATTR_PMK]) {
9168                 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN)
9169                         return -EINVAL;
9170                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9171                                              NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK))
9172                         return -EINVAL;
9173                 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]);
9174         }
9175
9176         if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) {
9177                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9178                                              NL80211_EXT_FEATURE_SAE_OFFLOAD))
9179                         return -EINVAL;
9180                 settings->sae_pwd =
9181                         nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9182                 settings->sae_pwd_len =
9183                         nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]);
9184         }
9185
9186         return 0;
9187 }
9188
9189 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info)
9190 {
9191         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9192         struct net_device *dev = info->user_ptr[1];
9193         struct ieee80211_channel *chan;
9194         struct cfg80211_assoc_request req = {};
9195         const u8 *bssid, *ssid;
9196         int err, ssid_len = 0;
9197
9198         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9199             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9200                 return -EPERM;
9201
9202         if (!info->attrs[NL80211_ATTR_MAC] ||
9203             !info->attrs[NL80211_ATTR_SSID] ||
9204             !info->attrs[NL80211_ATTR_WIPHY_FREQ])
9205                 return -EINVAL;
9206
9207         if (!rdev->ops->assoc)
9208                 return -EOPNOTSUPP;
9209
9210         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9211             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9212                 return -EOPNOTSUPP;
9213
9214         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9215
9216         chan = nl80211_get_valid_chan(&rdev->wiphy,
9217                                       info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9218         if (!chan)
9219                 return -EINVAL;
9220
9221         ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9222         ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9223
9224         if (info->attrs[NL80211_ATTR_IE]) {
9225                 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9226                 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9227         }
9228
9229         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9230                 enum nl80211_mfp mfp =
9231                         nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9232                 if (mfp == NL80211_MFP_REQUIRED)
9233                         req.use_mfp = true;
9234                 else if (mfp != NL80211_MFP_NO)
9235                         return -EINVAL;
9236         }
9237
9238         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9239                 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9240
9241         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9242                 req.flags |= ASSOC_REQ_DISABLE_HT;
9243
9244         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9245                 memcpy(&req.ht_capa_mask,
9246                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9247                        sizeof(req.ht_capa_mask));
9248
9249         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9250                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9251                         return -EINVAL;
9252                 memcpy(&req.ht_capa,
9253                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9254                        sizeof(req.ht_capa));
9255         }
9256
9257         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
9258                 req.flags |= ASSOC_REQ_DISABLE_VHT;
9259
9260         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9261                 memcpy(&req.vht_capa_mask,
9262                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
9263                        sizeof(req.vht_capa_mask));
9264
9265         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
9266                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
9267                         return -EINVAL;
9268                 memcpy(&req.vht_capa,
9269                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
9270                        sizeof(req.vht_capa));
9271         }
9272
9273         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
9274                 if (!((rdev->wiphy.features &
9275                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
9276                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
9277                     !wiphy_ext_feature_isset(&rdev->wiphy,
9278                                              NL80211_EXT_FEATURE_RRM))
9279                         return -EINVAL;
9280                 req.flags |= ASSOC_REQ_USE_RRM;
9281         }
9282
9283         if (info->attrs[NL80211_ATTR_FILS_KEK]) {
9284                 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]);
9285                 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]);
9286                 if (!info->attrs[NL80211_ATTR_FILS_NONCES])
9287                         return -EINVAL;
9288                 req.fils_nonces =
9289                         nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]);
9290         }
9291
9292         err = nl80211_crypto_settings(rdev, info, &req.crypto, 1);
9293         if (!err) {
9294                 wdev_lock(dev->ieee80211_ptr);
9295
9296                 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid,
9297                                           ssid, ssid_len, &req);
9298
9299                 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
9300                         dev->ieee80211_ptr->conn_owner_nlportid =
9301                                 info->snd_portid;
9302                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
9303                                bssid, ETH_ALEN);
9304                 }
9305
9306                 wdev_unlock(dev->ieee80211_ptr);
9307         }
9308
9309         return err;
9310 }
9311
9312 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info)
9313 {
9314         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9315         struct net_device *dev = info->user_ptr[1];
9316         const u8 *ie = NULL, *bssid;
9317         int ie_len = 0, err;
9318         u16 reason_code;
9319         bool local_state_change;
9320
9321         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9322             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9323                 return -EPERM;
9324
9325         if (!info->attrs[NL80211_ATTR_MAC])
9326                 return -EINVAL;
9327
9328         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9329                 return -EINVAL;
9330
9331         if (!rdev->ops->deauth)
9332                 return -EOPNOTSUPP;
9333
9334         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9335             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9336                 return -EOPNOTSUPP;
9337
9338         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9339
9340         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9341         if (reason_code == 0) {
9342                 /* Reason Code 0 is reserved */
9343                 return -EINVAL;
9344         }
9345
9346         if (info->attrs[NL80211_ATTR_IE]) {
9347                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9348                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9349         }
9350
9351         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9352
9353         wdev_lock(dev->ieee80211_ptr);
9354         err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code,
9355                                    local_state_change);
9356         wdev_unlock(dev->ieee80211_ptr);
9357         return err;
9358 }
9359
9360 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info)
9361 {
9362         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9363         struct net_device *dev = info->user_ptr[1];
9364         const u8 *ie = NULL, *bssid;
9365         int ie_len = 0, err;
9366         u16 reason_code;
9367         bool local_state_change;
9368
9369         if (dev->ieee80211_ptr->conn_owner_nlportid &&
9370             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
9371                 return -EPERM;
9372
9373         if (!info->attrs[NL80211_ATTR_MAC])
9374                 return -EINVAL;
9375
9376         if (!info->attrs[NL80211_ATTR_REASON_CODE])
9377                 return -EINVAL;
9378
9379         if (!rdev->ops->disassoc)
9380                 return -EOPNOTSUPP;
9381
9382         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9383             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9384                 return -EOPNOTSUPP;
9385
9386         bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9387
9388         reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
9389         if (reason_code == 0) {
9390                 /* Reason Code 0 is reserved */
9391                 return -EINVAL;
9392         }
9393
9394         if (info->attrs[NL80211_ATTR_IE]) {
9395                 ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9396                 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9397         }
9398
9399         local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE];
9400
9401         wdev_lock(dev->ieee80211_ptr);
9402         err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code,
9403                                      local_state_change);
9404         wdev_unlock(dev->ieee80211_ptr);
9405         return err;
9406 }
9407
9408 static bool
9409 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev,
9410                          int mcast_rate[NUM_NL80211_BANDS],
9411                          int rateval)
9412 {
9413         struct wiphy *wiphy = &rdev->wiphy;
9414         bool found = false;
9415         int band, i;
9416
9417         for (band = 0; band < NUM_NL80211_BANDS; band++) {
9418                 struct ieee80211_supported_band *sband;
9419
9420                 sband = wiphy->bands[band];
9421                 if (!sband)
9422                         continue;
9423
9424                 for (i = 0; i < sband->n_bitrates; i++) {
9425                         if (sband->bitrates[i].bitrate == rateval) {
9426                                 mcast_rate[band] = i + 1;
9427                                 found = true;
9428                                 break;
9429                         }
9430                 }
9431         }
9432
9433         return found;
9434 }
9435
9436 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info)
9437 {
9438         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9439         struct net_device *dev = info->user_ptr[1];
9440         struct cfg80211_ibss_params ibss;
9441         struct wiphy *wiphy;
9442         struct cfg80211_cached_keys *connkeys = NULL;
9443         int err;
9444
9445         memset(&ibss, 0, sizeof(ibss));
9446
9447         if (!info->attrs[NL80211_ATTR_SSID] ||
9448             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9449                 return -EINVAL;
9450
9451         ibss.beacon_interval = 100;
9452
9453         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL])
9454                 ibss.beacon_interval =
9455                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
9456
9457         err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC,
9458                                            ibss.beacon_interval);
9459         if (err)
9460                 return err;
9461
9462         if (!rdev->ops->join_ibss)
9463                 return -EOPNOTSUPP;
9464
9465         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9466                 return -EOPNOTSUPP;
9467
9468         wiphy = &rdev->wiphy;
9469
9470         if (info->attrs[NL80211_ATTR_MAC]) {
9471                 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9472
9473                 if (!is_valid_ether_addr(ibss.bssid))
9474                         return -EINVAL;
9475         }
9476         ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9477         ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9478
9479         if (info->attrs[NL80211_ATTR_IE]) {
9480                 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9481                 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9482         }
9483
9484         err = nl80211_parse_chandef(rdev, info, &ibss.chandef);
9485         if (err)
9486                 return err;
9487
9488         if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef,
9489                                      NL80211_IFTYPE_ADHOC))
9490                 return -EINVAL;
9491
9492         switch (ibss.chandef.width) {
9493         case NL80211_CHAN_WIDTH_5:
9494         case NL80211_CHAN_WIDTH_10:
9495         case NL80211_CHAN_WIDTH_20_NOHT:
9496                 break;
9497         case NL80211_CHAN_WIDTH_20:
9498         case NL80211_CHAN_WIDTH_40:
9499                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9500                         return -EINVAL;
9501                 break;
9502         case NL80211_CHAN_WIDTH_80:
9503         case NL80211_CHAN_WIDTH_80P80:
9504         case NL80211_CHAN_WIDTH_160:
9505                 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS))
9506                         return -EINVAL;
9507                 if (!wiphy_ext_feature_isset(&rdev->wiphy,
9508                                              NL80211_EXT_FEATURE_VHT_IBSS))
9509                         return -EINVAL;
9510                 break;
9511         default:
9512                 return -EINVAL;
9513         }
9514
9515         ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED];
9516         ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY];
9517
9518         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
9519                 u8 *rates =
9520                         nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9521                 int n_rates =
9522                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
9523                 struct ieee80211_supported_band *sband =
9524                         wiphy->bands[ibss.chandef.chan->band];
9525
9526                 err = ieee80211_get_ratemask(sband, rates, n_rates,
9527                                              &ibss.basic_rates);
9528                 if (err)
9529                         return err;
9530         }
9531
9532         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9533                 memcpy(&ibss.ht_capa_mask,
9534                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
9535                        sizeof(ibss.ht_capa_mask));
9536
9537         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
9538                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9539                         return -EINVAL;
9540                 memcpy(&ibss.ht_capa,
9541                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
9542                        sizeof(ibss.ht_capa));
9543         }
9544
9545         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
9546             !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate,
9547                         nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
9548                 return -EINVAL;
9549
9550         if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9551                 bool no_ht = false;
9552
9553                 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht);
9554                 if (IS_ERR(connkeys))
9555                         return PTR_ERR(connkeys);
9556
9557                 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) &&
9558                     no_ht) {
9559                         kzfree(connkeys);
9560                         return -EINVAL;
9561                 }
9562         }
9563
9564         ibss.control_port =
9565                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]);
9566
9567         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
9568                 int r = validate_pae_over_nl80211(rdev, info);
9569
9570                 if (r < 0) {
9571                         kzfree(connkeys);
9572                         return r;
9573                 }
9574
9575                 ibss.control_port_over_nl80211 = true;
9576         }
9577
9578         ibss.userspace_handles_dfs =
9579                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
9580
9581         wdev_lock(dev->ieee80211_ptr);
9582         err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys);
9583         if (err)
9584                 kzfree(connkeys);
9585         else if (info->attrs[NL80211_ATTR_SOCKET_OWNER])
9586                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
9587         wdev_unlock(dev->ieee80211_ptr);
9588
9589         return err;
9590 }
9591
9592 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info)
9593 {
9594         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9595         struct net_device *dev = info->user_ptr[1];
9596
9597         if (!rdev->ops->leave_ibss)
9598                 return -EOPNOTSUPP;
9599
9600         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC)
9601                 return -EOPNOTSUPP;
9602
9603         return cfg80211_leave_ibss(rdev, dev, false);
9604 }
9605
9606 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info)
9607 {
9608         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9609         struct net_device *dev = info->user_ptr[1];
9610         int mcast_rate[NUM_NL80211_BANDS];
9611         u32 nla_rate;
9612         int err;
9613
9614         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC &&
9615             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT &&
9616             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB)
9617                 return -EOPNOTSUPP;
9618
9619         if (!rdev->ops->set_mcast_rate)
9620                 return -EOPNOTSUPP;
9621
9622         memset(mcast_rate, 0, sizeof(mcast_rate));
9623
9624         if (!info->attrs[NL80211_ATTR_MCAST_RATE])
9625                 return -EINVAL;
9626
9627         nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]);
9628         if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate))
9629                 return -EINVAL;
9630
9631         err = rdev_set_mcast_rate(rdev, dev, mcast_rate);
9632
9633         return err;
9634 }
9635
9636 static struct sk_buff *
9637 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev,
9638                             struct wireless_dev *wdev, int approxlen,
9639                             u32 portid, u32 seq, enum nl80211_commands cmd,
9640                             enum nl80211_attrs attr,
9641                             const struct nl80211_vendor_cmd_info *info,
9642                             gfp_t gfp)
9643 {
9644         struct sk_buff *skb;
9645         void *hdr;
9646         struct nlattr *data;
9647
9648         skb = nlmsg_new(approxlen + 100, gfp);
9649         if (!skb)
9650                 return NULL;
9651
9652         hdr = nl80211hdr_put(skb, portid, seq, 0, cmd);
9653         if (!hdr) {
9654                 kfree_skb(skb);
9655                 return NULL;
9656         }
9657
9658         if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
9659                 goto nla_put_failure;
9660
9661         if (info) {
9662                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID,
9663                                 info->vendor_id))
9664                         goto nla_put_failure;
9665                 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD,
9666                                 info->subcmd))
9667                         goto nla_put_failure;
9668         }
9669
9670         if (wdev) {
9671                 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
9672                                       wdev_id(wdev), NL80211_ATTR_PAD))
9673                         goto nla_put_failure;
9674                 if (wdev->netdev &&
9675                     nla_put_u32(skb, NL80211_ATTR_IFINDEX,
9676                                 wdev->netdev->ifindex))
9677                         goto nla_put_failure;
9678         }
9679
9680         data = nla_nest_start_noflag(skb, attr);
9681         if (!data)
9682                 goto nla_put_failure;
9683
9684         ((void **)skb->cb)[0] = rdev;
9685         ((void **)skb->cb)[1] = hdr;
9686         ((void **)skb->cb)[2] = data;
9687
9688         return skb;
9689
9690  nla_put_failure:
9691         kfree_skb(skb);
9692         return NULL;
9693 }
9694
9695 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy,
9696                                            struct wireless_dev *wdev,
9697                                            enum nl80211_commands cmd,
9698                                            enum nl80211_attrs attr,
9699                                            unsigned int portid,
9700                                            int vendor_event_idx,
9701                                            int approxlen, gfp_t gfp)
9702 {
9703         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
9704         const struct nl80211_vendor_cmd_info *info;
9705
9706         switch (cmd) {
9707         case NL80211_CMD_TESTMODE:
9708                 if (WARN_ON(vendor_event_idx != -1))
9709                         return NULL;
9710                 info = NULL;
9711                 break;
9712         case NL80211_CMD_VENDOR:
9713                 if (WARN_ON(vendor_event_idx < 0 ||
9714                             vendor_event_idx >= wiphy->n_vendor_events))
9715                         return NULL;
9716                 info = &wiphy->vendor_events[vendor_event_idx];
9717                 break;
9718         default:
9719                 WARN_ON(1);
9720                 return NULL;
9721         }
9722
9723         return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0,
9724                                            cmd, attr, info, gfp);
9725 }
9726 EXPORT_SYMBOL(__cfg80211_alloc_event_skb);
9727
9728 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp)
9729 {
9730         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
9731         void *hdr = ((void **)skb->cb)[1];
9732         struct nlmsghdr *nlhdr = nlmsg_hdr(skb);
9733         struct nlattr *data = ((void **)skb->cb)[2];
9734         enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE;
9735
9736         /* clear CB data for netlink core to own from now on */
9737         memset(skb->cb, 0, sizeof(skb->cb));
9738
9739         nla_nest_end(skb, data);
9740         genlmsg_end(skb, hdr);
9741
9742         if (nlhdr->nlmsg_pid) {
9743                 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb,
9744                                 nlhdr->nlmsg_pid);
9745         } else {
9746                 if (data->nla_type == NL80211_ATTR_VENDOR_DATA)
9747                         mcgrp = NL80211_MCGRP_VENDOR;
9748
9749                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
9750                                         skb, 0, mcgrp, gfp);
9751         }
9752 }
9753 EXPORT_SYMBOL(__cfg80211_send_event_skb);
9754
9755 #ifdef CONFIG_NL80211_TESTMODE
9756 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
9757 {
9758         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9759         struct wireless_dev *wdev =
9760                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
9761         int err;
9762
9763         if (!rdev->ops->testmode_cmd)
9764                 return -EOPNOTSUPP;
9765
9766         if (IS_ERR(wdev)) {
9767                 err = PTR_ERR(wdev);
9768                 if (err != -EINVAL)
9769                         return err;
9770                 wdev = NULL;
9771         } else if (wdev->wiphy != &rdev->wiphy) {
9772                 return -EINVAL;
9773         }
9774
9775         if (!info->attrs[NL80211_ATTR_TESTDATA])
9776                 return -EINVAL;
9777
9778         rdev->cur_cmd_info = info;
9779         err = rdev_testmode_cmd(rdev, wdev,
9780                                 nla_data(info->attrs[NL80211_ATTR_TESTDATA]),
9781                                 nla_len(info->attrs[NL80211_ATTR_TESTDATA]));
9782         rdev->cur_cmd_info = NULL;
9783
9784         return err;
9785 }
9786
9787 static int nl80211_testmode_dump(struct sk_buff *skb,
9788                                  struct netlink_callback *cb)
9789 {
9790         struct cfg80211_registered_device *rdev;
9791         struct nlattr **attrbuf = NULL;
9792         int err;
9793         long phy_idx;
9794         void *data = NULL;
9795         int data_len = 0;
9796
9797         rtnl_lock();
9798
9799         if (cb->args[0]) {
9800                 /*
9801                  * 0 is a valid index, but not valid for args[0],
9802                  * so we need to offset by 1.
9803                  */
9804                 phy_idx = cb->args[0] - 1;
9805
9806                 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx);
9807                 if (!rdev) {
9808                         err = -ENOENT;
9809                         goto out_err;
9810                 }
9811         } else {
9812                 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf),
9813                                   GFP_KERNEL);
9814                 if (!attrbuf) {
9815                         err = -ENOMEM;
9816                         goto out_err;
9817                 }
9818
9819                 err = nlmsg_parse_deprecated(cb->nlh,
9820                                              GENL_HDRLEN + nl80211_fam.hdrsize,
9821                                              attrbuf, nl80211_fam.maxattr,
9822                                              nl80211_policy, NULL);
9823                 if (err)
9824                         goto out_err;
9825
9826                 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
9827                 if (IS_ERR(rdev)) {
9828                         err = PTR_ERR(rdev);
9829                         goto out_err;
9830                 }
9831                 phy_idx = rdev->wiphy_idx;
9832
9833                 if (attrbuf[NL80211_ATTR_TESTDATA])
9834                         cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA];
9835         }
9836
9837         if (cb->args[1]) {
9838                 data = nla_data((void *)cb->args[1]);
9839                 data_len = nla_len((void *)cb->args[1]);
9840         }
9841
9842         if (!rdev->ops->testmode_dump) {
9843                 err = -EOPNOTSUPP;
9844                 goto out_err;
9845         }
9846
9847         while (1) {
9848                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
9849                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
9850                                            NL80211_CMD_TESTMODE);
9851                 struct nlattr *tmdata;
9852
9853                 if (!hdr)
9854                         break;
9855
9856                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) {
9857                         genlmsg_cancel(skb, hdr);
9858                         break;
9859                 }
9860
9861                 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA);
9862                 if (!tmdata) {
9863                         genlmsg_cancel(skb, hdr);
9864                         break;
9865                 }
9866                 err = rdev_testmode_dump(rdev, skb, cb, data, data_len);
9867                 nla_nest_end(skb, tmdata);
9868
9869                 if (err == -ENOBUFS || err == -ENOENT) {
9870                         genlmsg_cancel(skb, hdr);
9871                         break;
9872                 } else if (err) {
9873                         genlmsg_cancel(skb, hdr);
9874                         goto out_err;
9875                 }
9876
9877                 genlmsg_end(skb, hdr);
9878         }
9879
9880         err = skb->len;
9881         /* see above */
9882         cb->args[0] = phy_idx + 1;
9883  out_err:
9884         kfree(attrbuf);
9885         rtnl_unlock();
9886         return err;
9887 }
9888 #endif
9889
9890 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info)
9891 {
9892         struct cfg80211_registered_device *rdev = info->user_ptr[0];
9893         struct net_device *dev = info->user_ptr[1];
9894         struct cfg80211_connect_params connect;
9895         struct wiphy *wiphy;
9896         struct cfg80211_cached_keys *connkeys = NULL;
9897         int err;
9898
9899         memset(&connect, 0, sizeof(connect));
9900
9901         if (!info->attrs[NL80211_ATTR_SSID] ||
9902             !nla_len(info->attrs[NL80211_ATTR_SSID]))
9903                 return -EINVAL;
9904
9905         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
9906                 connect.auth_type =
9907                         nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
9908                 if (!nl80211_valid_auth_type(rdev, connect.auth_type,
9909                                              NL80211_CMD_CONNECT))
9910                         return -EINVAL;
9911         } else
9912                 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
9913
9914         connect.privacy = info->attrs[NL80211_ATTR_PRIVACY];
9915
9916         if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] &&
9917             !wiphy_ext_feature_isset(&rdev->wiphy,
9918                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
9919                 return -EINVAL;
9920         connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS];
9921
9922         err = nl80211_crypto_settings(rdev, info, &connect.crypto,
9923                                       NL80211_MAX_NR_CIPHER_SUITES);
9924         if (err)
9925                 return err;
9926
9927         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
9928             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
9929                 return -EOPNOTSUPP;
9930
9931         wiphy = &rdev->wiphy;
9932
9933         connect.bg_scan_period = -1;
9934         if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] &&
9935                 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) {
9936                 connect.bg_scan_period =
9937                         nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]);
9938         }
9939
9940         if (info->attrs[NL80211_ATTR_MAC])
9941                 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
9942         else if (info->attrs[NL80211_ATTR_MAC_HINT])
9943                 connect.bssid_hint =
9944                         nla_data(info->attrs[NL80211_ATTR_MAC_HINT]);
9945         connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
9946         connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
9947
9948         if (info->attrs[NL80211_ATTR_IE]) {
9949                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
9950                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
9951         }
9952
9953         if (info->attrs[NL80211_ATTR_USE_MFP]) {
9954                 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]);
9955                 if (connect.mfp == NL80211_MFP_OPTIONAL &&
9956                     !wiphy_ext_feature_isset(&rdev->wiphy,
9957                                              NL80211_EXT_FEATURE_MFP_OPTIONAL))
9958                         return -EOPNOTSUPP;
9959         } else {
9960                 connect.mfp = NL80211_MFP_NO;
9961         }
9962
9963         if (info->attrs[NL80211_ATTR_PREV_BSSID])
9964                 connect.prev_bssid =
9965                         nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]);
9966
9967         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
9968                 connect.channel = nl80211_get_valid_chan(
9969                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]);
9970                 if (!connect.channel)
9971                         return -EINVAL;
9972         } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) {
9973                 connect.channel_hint = nl80211_get_valid_chan(
9974                         wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]);
9975                 if (!connect.channel_hint)
9976                         return -EINVAL;
9977         }
9978
9979         if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) {
9980                 connect.edmg.channels =
9981                       nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]);
9982
9983                 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG])
9984                         connect.edmg.bw_config =
9985                                 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]);
9986         }
9987
9988         if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) {
9989                 connkeys = nl80211_parse_connkeys(rdev, info, NULL);
9990                 if (IS_ERR(connkeys))
9991                         return PTR_ERR(connkeys);
9992         }
9993
9994         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT]))
9995                 connect.flags |= ASSOC_REQ_DISABLE_HT;
9996
9997         if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK])
9998                 memcpy(&connect.ht_capa_mask,
9999                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]),
10000                        sizeof(connect.ht_capa_mask));
10001
10002         if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) {
10003                 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) {
10004                         kzfree(connkeys);
10005                         return -EINVAL;
10006                 }
10007                 memcpy(&connect.ht_capa,
10008                        nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]),
10009                        sizeof(connect.ht_capa));
10010         }
10011
10012         if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT]))
10013                 connect.flags |= ASSOC_REQ_DISABLE_VHT;
10014
10015         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK])
10016                 memcpy(&connect.vht_capa_mask,
10017                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]),
10018                        sizeof(connect.vht_capa_mask));
10019
10020         if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) {
10021                 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) {
10022                         kzfree(connkeys);
10023                         return -EINVAL;
10024                 }
10025                 memcpy(&connect.vht_capa,
10026                        nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]),
10027                        sizeof(connect.vht_capa));
10028         }
10029
10030         if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) {
10031                 if (!((rdev->wiphy.features &
10032                         NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) &&
10033                        (rdev->wiphy.features & NL80211_FEATURE_QUIET)) &&
10034                     !wiphy_ext_feature_isset(&rdev->wiphy,
10035                                              NL80211_EXT_FEATURE_RRM)) {
10036                         kzfree(connkeys);
10037                         return -EINVAL;
10038                 }
10039                 connect.flags |= ASSOC_REQ_USE_RRM;
10040         }
10041
10042         connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
10043         if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
10044                 kzfree(connkeys);
10045                 return -EOPNOTSUPP;
10046         }
10047
10048         if (info->attrs[NL80211_ATTR_BSS_SELECT]) {
10049                 /* bss selection makes no sense if bssid is set */
10050                 if (connect.bssid) {
10051                         kzfree(connkeys);
10052                         return -EINVAL;
10053                 }
10054
10055                 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT],
10056                                        wiphy, &connect.bss_select);
10057                 if (err) {
10058                         kzfree(connkeys);
10059                         return err;
10060                 }
10061         }
10062
10063         if (wiphy_ext_feature_isset(&rdev->wiphy,
10064                                     NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) &&
10065             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10066             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10067             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10068             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10069                 connect.fils_erp_username =
10070                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10071                 connect.fils_erp_username_len =
10072                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10073                 connect.fils_erp_realm =
10074                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10075                 connect.fils_erp_realm_len =
10076                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10077                 connect.fils_erp_next_seq_num =
10078                         nla_get_u16(
10079                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10080                 connect.fils_erp_rrk =
10081                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10082                 connect.fils_erp_rrk_len =
10083                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10084         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10085                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10086                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10087                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10088                 kzfree(connkeys);
10089                 return -EINVAL;
10090         }
10091
10092         if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) {
10093                 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10094                         kzfree(connkeys);
10095                         GENL_SET_ERR_MSG(info,
10096                                          "external auth requires connection ownership");
10097                         return -EINVAL;
10098                 }
10099                 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT;
10100         }
10101
10102         wdev_lock(dev->ieee80211_ptr);
10103
10104         err = cfg80211_connect(rdev, dev, &connect, connkeys,
10105                                connect.prev_bssid);
10106         if (err)
10107                 kzfree(connkeys);
10108
10109         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) {
10110                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
10111                 if (connect.bssid)
10112                         memcpy(dev->ieee80211_ptr->disconnect_bssid,
10113                                connect.bssid, ETH_ALEN);
10114                 else
10115                         memset(dev->ieee80211_ptr->disconnect_bssid,
10116                                0, ETH_ALEN);
10117         }
10118
10119         wdev_unlock(dev->ieee80211_ptr);
10120
10121         return err;
10122 }
10123
10124 static int nl80211_update_connect_params(struct sk_buff *skb,
10125                                          struct genl_info *info)
10126 {
10127         struct cfg80211_connect_params connect = {};
10128         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10129         struct net_device *dev = info->user_ptr[1];
10130         struct wireless_dev *wdev = dev->ieee80211_ptr;
10131         bool fils_sk_offload;
10132         u32 auth_type;
10133         u32 changed = 0;
10134         int ret;
10135
10136         if (!rdev->ops->update_connect_params)
10137                 return -EOPNOTSUPP;
10138
10139         if (info->attrs[NL80211_ATTR_IE]) {
10140                 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
10141                 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
10142                 changed |= UPDATE_ASSOC_IES;
10143         }
10144
10145         fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy,
10146                                                   NL80211_EXT_FEATURE_FILS_SK_OFFLOAD);
10147
10148         /*
10149          * when driver supports fils-sk offload all attributes must be
10150          * provided. So the else covers "fils-sk-not-all" and
10151          * "no-fils-sk-any".
10152          */
10153         if (fils_sk_offload &&
10154             info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] &&
10155             info->attrs[NL80211_ATTR_FILS_ERP_REALM] &&
10156             info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] &&
10157             info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10158                 connect.fils_erp_username =
10159                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10160                 connect.fils_erp_username_len =
10161                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]);
10162                 connect.fils_erp_realm =
10163                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10164                 connect.fils_erp_realm_len =
10165                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]);
10166                 connect.fils_erp_next_seq_num =
10167                         nla_get_u16(
10168                            info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]);
10169                 connect.fils_erp_rrk =
10170                         nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10171                 connect.fils_erp_rrk_len =
10172                         nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]);
10173                 changed |= UPDATE_FILS_ERP_INFO;
10174         } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] ||
10175                    info->attrs[NL80211_ATTR_FILS_ERP_REALM] ||
10176                    info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] ||
10177                    info->attrs[NL80211_ATTR_FILS_ERP_RRK]) {
10178                 return -EINVAL;
10179         }
10180
10181         if (info->attrs[NL80211_ATTR_AUTH_TYPE]) {
10182                 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]);
10183                 if (!nl80211_valid_auth_type(rdev, auth_type,
10184                                              NL80211_CMD_CONNECT))
10185                         return -EINVAL;
10186
10187                 if (auth_type == NL80211_AUTHTYPE_FILS_SK &&
10188                     fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO))
10189                         return -EINVAL;
10190
10191                 connect.auth_type = auth_type;
10192                 changed |= UPDATE_AUTH_TYPE;
10193         }
10194
10195         wdev_lock(dev->ieee80211_ptr);
10196         if (!wdev->current_bss)
10197                 ret = -ENOLINK;
10198         else
10199                 ret = rdev_update_connect_params(rdev, dev, &connect, changed);
10200         wdev_unlock(dev->ieee80211_ptr);
10201
10202         return ret;
10203 }
10204
10205 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info)
10206 {
10207         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10208         struct net_device *dev = info->user_ptr[1];
10209         u16 reason;
10210         int ret;
10211
10212         if (dev->ieee80211_ptr->conn_owner_nlportid &&
10213             dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid)
10214                 return -EPERM;
10215
10216         if (!info->attrs[NL80211_ATTR_REASON_CODE])
10217                 reason = WLAN_REASON_DEAUTH_LEAVING;
10218         else
10219                 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]);
10220
10221         if (reason == 0)
10222                 return -EINVAL;
10223
10224         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10225             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10226                 return -EOPNOTSUPP;
10227
10228         wdev_lock(dev->ieee80211_ptr);
10229         ret = cfg80211_disconnect(rdev, dev, reason, true);
10230         wdev_unlock(dev->ieee80211_ptr);
10231         return ret;
10232 }
10233
10234 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info)
10235 {
10236         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10237         struct net *net;
10238         int err;
10239
10240         if (info->attrs[NL80211_ATTR_PID]) {
10241                 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]);
10242
10243                 net = get_net_ns_by_pid(pid);
10244         } else if (info->attrs[NL80211_ATTR_NETNS_FD]) {
10245                 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]);
10246
10247                 net = get_net_ns_by_fd(fd);
10248         } else {
10249                 return -EINVAL;
10250         }
10251
10252         if (IS_ERR(net))
10253                 return PTR_ERR(net);
10254
10255         err = 0;
10256
10257         /* check if anything to do */
10258         if (!net_eq(wiphy_net(&rdev->wiphy), net))
10259                 err = cfg80211_switch_netns(rdev, net);
10260
10261         put_net(net);
10262         return err;
10263 }
10264
10265 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info)
10266 {
10267         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10268         int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev,
10269                         struct cfg80211_pmksa *pmksa) = NULL;
10270         struct net_device *dev = info->user_ptr[1];
10271         struct cfg80211_pmksa pmksa;
10272
10273         memset(&pmksa, 0, sizeof(struct cfg80211_pmksa));
10274
10275         if (!info->attrs[NL80211_ATTR_PMKID])
10276                 return -EINVAL;
10277
10278         pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
10279
10280         if (info->attrs[NL80211_ATTR_MAC]) {
10281                 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]);
10282         } else if (info->attrs[NL80211_ATTR_SSID] &&
10283                    info->attrs[NL80211_ATTR_FILS_CACHE_ID] &&
10284                    (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA ||
10285                     info->attrs[NL80211_ATTR_PMK])) {
10286                 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]);
10287                 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
10288                 pmksa.cache_id =
10289                         nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]);
10290         } else {
10291                 return -EINVAL;
10292         }
10293         if (info->attrs[NL80211_ATTR_PMK]) {
10294                 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
10295                 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
10296         }
10297
10298         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10299             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT &&
10300             !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP &&
10301               wiphy_ext_feature_isset(&rdev->wiphy,
10302                                       NL80211_EXT_FEATURE_AP_PMKSA_CACHING)))
10303                 return -EOPNOTSUPP;
10304
10305         switch (info->genlhdr->cmd) {
10306         case NL80211_CMD_SET_PMKSA:
10307                 rdev_ops = rdev->ops->set_pmksa;
10308                 break;
10309         case NL80211_CMD_DEL_PMKSA:
10310                 rdev_ops = rdev->ops->del_pmksa;
10311                 break;
10312         default:
10313                 WARN_ON(1);
10314                 break;
10315         }
10316
10317         if (!rdev_ops)
10318                 return -EOPNOTSUPP;
10319
10320         return rdev_ops(&rdev->wiphy, dev, &pmksa);
10321 }
10322
10323 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info)
10324 {
10325         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10326         struct net_device *dev = info->user_ptr[1];
10327
10328         if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION &&
10329             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT)
10330                 return -EOPNOTSUPP;
10331
10332         if (!rdev->ops->flush_pmksa)
10333                 return -EOPNOTSUPP;
10334
10335         return rdev_flush_pmksa(rdev, dev);
10336 }
10337
10338 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info)
10339 {
10340         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10341         struct net_device *dev = info->user_ptr[1];
10342         u8 action_code, dialog_token;
10343         u32 peer_capability = 0;
10344         u16 status_code;
10345         u8 *peer;
10346         bool initiator;
10347
10348         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10349             !rdev->ops->tdls_mgmt)
10350                 return -EOPNOTSUPP;
10351
10352         if (!info->attrs[NL80211_ATTR_TDLS_ACTION] ||
10353             !info->attrs[NL80211_ATTR_STATUS_CODE] ||
10354             !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] ||
10355             !info->attrs[NL80211_ATTR_IE] ||
10356             !info->attrs[NL80211_ATTR_MAC])
10357                 return -EINVAL;
10358
10359         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10360         action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]);
10361         status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
10362         dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]);
10363         initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]);
10364         if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY])
10365                 peer_capability =
10366                         nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]);
10367
10368         return rdev_tdls_mgmt(rdev, dev, peer, action_code,
10369                               dialog_token, status_code, peer_capability,
10370                               initiator,
10371                               nla_data(info->attrs[NL80211_ATTR_IE]),
10372                               nla_len(info->attrs[NL80211_ATTR_IE]));
10373 }
10374
10375 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info)
10376 {
10377         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10378         struct net_device *dev = info->user_ptr[1];
10379         enum nl80211_tdls_operation operation;
10380         u8 *peer;
10381
10382         if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) ||
10383             !rdev->ops->tdls_oper)
10384                 return -EOPNOTSUPP;
10385
10386         if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] ||
10387             !info->attrs[NL80211_ATTR_MAC])
10388                 return -EINVAL;
10389
10390         operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]);
10391         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
10392
10393         return rdev_tdls_oper(rdev, dev, peer, operation);
10394 }
10395
10396 static int nl80211_remain_on_channel(struct sk_buff *skb,
10397                                      struct genl_info *info)
10398 {
10399         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10400         struct wireless_dev *wdev = info->user_ptr[1];
10401         struct cfg80211_chan_def chandef;
10402         const struct cfg80211_chan_def *compat_chandef;
10403         struct sk_buff *msg;
10404         void *hdr;
10405         u64 cookie;
10406         u32 duration;
10407         int err;
10408
10409         if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] ||
10410             !info->attrs[NL80211_ATTR_DURATION])
10411                 return -EINVAL;
10412
10413         duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10414
10415         if (!rdev->ops->remain_on_channel ||
10416             !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL))
10417                 return -EOPNOTSUPP;
10418
10419         /*
10420          * We should be on that channel for at least a minimum amount of
10421          * time (10ms) but no longer than the driver supports.
10422          */
10423         if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10424             duration > rdev->wiphy.max_remain_on_channel_duration)
10425                 return -EINVAL;
10426
10427         err = nl80211_parse_chandef(rdev, info, &chandef);
10428         if (err)
10429                 return err;
10430
10431         wdev_lock(wdev);
10432         if (!cfg80211_off_channel_oper_allowed(wdev) &&
10433             !cfg80211_chandef_identical(&wdev->chandef, &chandef)) {
10434                 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef,
10435                                                              &chandef);
10436                 if (compat_chandef != &chandef) {
10437                         wdev_unlock(wdev);
10438                         return -EBUSY;
10439                 }
10440         }
10441         wdev_unlock(wdev);
10442
10443         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10444         if (!msg)
10445                 return -ENOMEM;
10446
10447         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10448                              NL80211_CMD_REMAIN_ON_CHANNEL);
10449         if (!hdr) {
10450                 err = -ENOBUFS;
10451                 goto free_msg;
10452         }
10453
10454         err = rdev_remain_on_channel(rdev, wdev, chandef.chan,
10455                                      duration, &cookie);
10456
10457         if (err)
10458                 goto free_msg;
10459
10460         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10461                               NL80211_ATTR_PAD))
10462                 goto nla_put_failure;
10463
10464         genlmsg_end(msg, hdr);
10465
10466         return genlmsg_reply(msg, info);
10467
10468  nla_put_failure:
10469         err = -ENOBUFS;
10470  free_msg:
10471         nlmsg_free(msg);
10472         return err;
10473 }
10474
10475 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb,
10476                                             struct genl_info *info)
10477 {
10478         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10479         struct wireless_dev *wdev = info->user_ptr[1];
10480         u64 cookie;
10481
10482         if (!info->attrs[NL80211_ATTR_COOKIE])
10483                 return -EINVAL;
10484
10485         if (!rdev->ops->cancel_remain_on_channel)
10486                 return -EOPNOTSUPP;
10487
10488         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10489
10490         return rdev_cancel_remain_on_channel(rdev, wdev, cookie);
10491 }
10492
10493 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
10494                                        struct genl_info *info)
10495 {
10496         struct cfg80211_bitrate_mask mask;
10497         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10498         struct net_device *dev = info->user_ptr[1];
10499         int err;
10500
10501         if (!rdev->ops->set_bitrate_mask)
10502                 return -EOPNOTSUPP;
10503
10504         err = nl80211_parse_tx_bitrate_mask(info, &mask);
10505         if (err)
10506                 return err;
10507
10508         return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
10509 }
10510
10511 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info)
10512 {
10513         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10514         struct wireless_dev *wdev = info->user_ptr[1];
10515         u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION;
10516
10517         if (!info->attrs[NL80211_ATTR_FRAME_MATCH])
10518                 return -EINVAL;
10519
10520         if (info->attrs[NL80211_ATTR_FRAME_TYPE])
10521                 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]);
10522
10523         switch (wdev->iftype) {
10524         case NL80211_IFTYPE_STATION:
10525         case NL80211_IFTYPE_ADHOC:
10526         case NL80211_IFTYPE_P2P_CLIENT:
10527         case NL80211_IFTYPE_AP:
10528         case NL80211_IFTYPE_AP_VLAN:
10529         case NL80211_IFTYPE_MESH_POINT:
10530         case NL80211_IFTYPE_P2P_GO:
10531         case NL80211_IFTYPE_P2P_DEVICE:
10532                 break;
10533         case NL80211_IFTYPE_NAN:
10534         default:
10535                 return -EOPNOTSUPP;
10536         }
10537
10538         /* not much point in registering if we can't reply */
10539         if (!rdev->ops->mgmt_tx)
10540                 return -EOPNOTSUPP;
10541
10542         return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type,
10543                         nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]),
10544                         nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]));
10545 }
10546
10547 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info)
10548 {
10549         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10550         struct wireless_dev *wdev = info->user_ptr[1];
10551         struct cfg80211_chan_def chandef;
10552         int err;
10553         void *hdr = NULL;
10554         u64 cookie;
10555         struct sk_buff *msg = NULL;
10556         struct cfg80211_mgmt_tx_params params = {
10557                 .dont_wait_for_ack =
10558                         info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK],
10559         };
10560
10561         if (!info->attrs[NL80211_ATTR_FRAME])
10562                 return -EINVAL;
10563
10564         if (!rdev->ops->mgmt_tx)
10565                 return -EOPNOTSUPP;
10566
10567         switch (wdev->iftype) {
10568         case NL80211_IFTYPE_P2P_DEVICE:
10569                 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ])
10570                         return -EINVAL;
10571         case NL80211_IFTYPE_STATION:
10572         case NL80211_IFTYPE_ADHOC:
10573         case NL80211_IFTYPE_P2P_CLIENT:
10574         case NL80211_IFTYPE_AP:
10575         case NL80211_IFTYPE_AP_VLAN:
10576         case NL80211_IFTYPE_MESH_POINT:
10577         case NL80211_IFTYPE_P2P_GO:
10578                 break;
10579         case NL80211_IFTYPE_NAN:
10580         default:
10581                 return -EOPNOTSUPP;
10582         }
10583
10584         if (info->attrs[NL80211_ATTR_DURATION]) {
10585                 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10586                         return -EINVAL;
10587                 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]);
10588
10589                 /*
10590                  * We should wait on the channel for at least a minimum amount
10591                  * of time (10ms) but no longer than the driver supports.
10592                  */
10593                 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME ||
10594                     params.wait > rdev->wiphy.max_remain_on_channel_duration)
10595                         return -EINVAL;
10596         }
10597
10598         params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK];
10599
10600         if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX))
10601                 return -EINVAL;
10602
10603         params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]);
10604
10605         /* get the channel if any has been specified, otherwise pass NULL to
10606          * the driver. The latter will use the current one
10607          */
10608         chandef.chan = NULL;
10609         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
10610                 err = nl80211_parse_chandef(rdev, info, &chandef);
10611                 if (err)
10612                         return err;
10613         }
10614
10615         if (!chandef.chan && params.offchan)
10616                 return -EINVAL;
10617
10618         wdev_lock(wdev);
10619         if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) {
10620                 wdev_unlock(wdev);
10621                 return -EBUSY;
10622         }
10623         wdev_unlock(wdev);
10624
10625         params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
10626         params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
10627
10628         if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) {
10629                 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10630                 int i;
10631
10632                 if (len % sizeof(u16))
10633                         return -EINVAL;
10634
10635                 params.n_csa_offsets = len / sizeof(u16);
10636                 params.csa_offsets =
10637                         nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]);
10638
10639                 /* check that all the offsets fit the frame */
10640                 for (i = 0; i < params.n_csa_offsets; i++) {
10641                         if (params.csa_offsets[i] >= params.len)
10642                                 return -EINVAL;
10643                 }
10644         }
10645
10646         if (!params.dont_wait_for_ack) {
10647                 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10648                 if (!msg)
10649                         return -ENOMEM;
10650
10651                 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10652                                      NL80211_CMD_FRAME);
10653                 if (!hdr) {
10654                         err = -ENOBUFS;
10655                         goto free_msg;
10656                 }
10657         }
10658
10659         params.chan = chandef.chan;
10660         err = cfg80211_mlme_mgmt_tx(rdev, wdev, &params, &cookie);
10661         if (err)
10662                 goto free_msg;
10663
10664         if (msg) {
10665                 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
10666                                       NL80211_ATTR_PAD))
10667                         goto nla_put_failure;
10668
10669                 genlmsg_end(msg, hdr);
10670                 return genlmsg_reply(msg, info);
10671         }
10672
10673         return 0;
10674
10675  nla_put_failure:
10676         err = -ENOBUFS;
10677  free_msg:
10678         nlmsg_free(msg);
10679         return err;
10680 }
10681
10682 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info)
10683 {
10684         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10685         struct wireless_dev *wdev = info->user_ptr[1];
10686         u64 cookie;
10687
10688         if (!info->attrs[NL80211_ATTR_COOKIE])
10689                 return -EINVAL;
10690
10691         if (!rdev->ops->mgmt_tx_cancel_wait)
10692                 return -EOPNOTSUPP;
10693
10694         switch (wdev->iftype) {
10695         case NL80211_IFTYPE_STATION:
10696         case NL80211_IFTYPE_ADHOC:
10697         case NL80211_IFTYPE_P2P_CLIENT:
10698         case NL80211_IFTYPE_AP:
10699         case NL80211_IFTYPE_AP_VLAN:
10700         case NL80211_IFTYPE_P2P_GO:
10701         case NL80211_IFTYPE_P2P_DEVICE:
10702                 break;
10703         case NL80211_IFTYPE_NAN:
10704         default:
10705                 return -EOPNOTSUPP;
10706         }
10707
10708         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
10709
10710         return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie);
10711 }
10712
10713 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info)
10714 {
10715         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10716         struct wireless_dev *wdev;
10717         struct net_device *dev = info->user_ptr[1];
10718         u8 ps_state;
10719         bool state;
10720         int err;
10721
10722         if (!info->attrs[NL80211_ATTR_PS_STATE])
10723                 return -EINVAL;
10724
10725         ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]);
10726
10727         wdev = dev->ieee80211_ptr;
10728
10729         if (!rdev->ops->set_power_mgmt)
10730                 return -EOPNOTSUPP;
10731
10732         state = (ps_state == NL80211_PS_ENABLED) ? true : false;
10733
10734         if (state == wdev->ps)
10735                 return 0;
10736
10737         err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout);
10738         if (!err)
10739                 wdev->ps = state;
10740         return err;
10741 }
10742
10743 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info)
10744 {
10745         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10746         enum nl80211_ps_state ps_state;
10747         struct wireless_dev *wdev;
10748         struct net_device *dev = info->user_ptr[1];
10749         struct sk_buff *msg;
10750         void *hdr;
10751         int err;
10752
10753         wdev = dev->ieee80211_ptr;
10754
10755         if (!rdev->ops->set_power_mgmt)
10756                 return -EOPNOTSUPP;
10757
10758         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
10759         if (!msg)
10760                 return -ENOMEM;
10761
10762         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
10763                              NL80211_CMD_GET_POWER_SAVE);
10764         if (!hdr) {
10765                 err = -ENOBUFS;
10766                 goto free_msg;
10767         }
10768
10769         if (wdev->ps)
10770                 ps_state = NL80211_PS_ENABLED;
10771         else
10772                 ps_state = NL80211_PS_DISABLED;
10773
10774         if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state))
10775                 goto nla_put_failure;
10776
10777         genlmsg_end(msg, hdr);
10778         return genlmsg_reply(msg, info);
10779
10780  nla_put_failure:
10781         err = -ENOBUFS;
10782  free_msg:
10783         nlmsg_free(msg);
10784         return err;
10785 }
10786
10787 static const struct nla_policy
10788 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = {
10789         [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY },
10790         [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 },
10791         [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 },
10792         [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 },
10793         [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 },
10794         [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 },
10795         [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 },
10796 };
10797
10798 static int nl80211_set_cqm_txe(struct genl_info *info,
10799                                u32 rate, u32 pkts, u32 intvl)
10800 {
10801         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10802         struct net_device *dev = info->user_ptr[1];
10803         struct wireless_dev *wdev = dev->ieee80211_ptr;
10804
10805         if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL)
10806                 return -EINVAL;
10807
10808         if (!rdev->ops->set_cqm_txe_config)
10809                 return -EOPNOTSUPP;
10810
10811         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10812             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10813                 return -EOPNOTSUPP;
10814
10815         return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl);
10816 }
10817
10818 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev,
10819                                     struct net_device *dev)
10820 {
10821         struct wireless_dev *wdev = dev->ieee80211_ptr;
10822         s32 last, low, high;
10823         u32 hyst;
10824         int i, n, low_index;
10825         int err;
10826
10827         /* RSSI reporting disabled? */
10828         if (!wdev->cqm_config)
10829                 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0);
10830
10831         /*
10832          * Obtain current RSSI value if possible, if not and no RSSI threshold
10833          * event has been received yet, we should receive an event after a
10834          * connection is established and enough beacons received to calculate
10835          * the average.
10836          */
10837         if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss &&
10838             rdev->ops->get_station) {
10839                 struct station_info sinfo = {};
10840                 u8 *mac_addr;
10841
10842                 mac_addr = wdev->current_bss->pub.bssid;
10843
10844                 err = rdev_get_station(rdev, dev, mac_addr, &sinfo);
10845                 if (err)
10846                         return err;
10847
10848                 cfg80211_sinfo_release_content(&sinfo);
10849                 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG))
10850                         wdev->cqm_config->last_rssi_event_value =
10851                                 (s8) sinfo.rx_beacon_signal_avg;
10852         }
10853
10854         last = wdev->cqm_config->last_rssi_event_value;
10855         hyst = wdev->cqm_config->rssi_hyst;
10856         n = wdev->cqm_config->n_rssi_thresholds;
10857
10858         for (i = 0; i < n; i++) {
10859                 i = array_index_nospec(i, n);
10860                 if (last < wdev->cqm_config->rssi_thresholds[i])
10861                         break;
10862         }
10863
10864         low_index = i - 1;
10865         if (low_index >= 0) {
10866                 low_index = array_index_nospec(low_index, n);
10867                 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst;
10868         } else {
10869                 low = S32_MIN;
10870         }
10871         if (i < n) {
10872                 i = array_index_nospec(i, n);
10873                 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1;
10874         } else {
10875                 high = S32_MAX;
10876         }
10877
10878         return rdev_set_cqm_rssi_range_config(rdev, dev, low, high);
10879 }
10880
10881 static int nl80211_set_cqm_rssi(struct genl_info *info,
10882                                 const s32 *thresholds, int n_thresholds,
10883                                 u32 hysteresis)
10884 {
10885         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10886         struct net_device *dev = info->user_ptr[1];
10887         struct wireless_dev *wdev = dev->ieee80211_ptr;
10888         int i, err;
10889         s32 prev = S32_MIN;
10890
10891         /* Check all values negative and sorted */
10892         for (i = 0; i < n_thresholds; i++) {
10893                 if (thresholds[i] > 0 || thresholds[i] <= prev)
10894                         return -EINVAL;
10895
10896                 prev = thresholds[i];
10897         }
10898
10899         if (wdev->iftype != NL80211_IFTYPE_STATION &&
10900             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
10901                 return -EOPNOTSUPP;
10902
10903         wdev_lock(wdev);
10904         cfg80211_cqm_config_free(wdev);
10905         wdev_unlock(wdev);
10906
10907         if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) {
10908                 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */
10909                         return rdev_set_cqm_rssi_config(rdev, dev, 0, 0);
10910
10911                 return rdev_set_cqm_rssi_config(rdev, dev,
10912                                                 thresholds[0], hysteresis);
10913         }
10914
10915         if (!wiphy_ext_feature_isset(&rdev->wiphy,
10916                                      NL80211_EXT_FEATURE_CQM_RSSI_LIST))
10917                 return -EOPNOTSUPP;
10918
10919         if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */
10920                 n_thresholds = 0;
10921
10922         wdev_lock(wdev);
10923         if (n_thresholds) {
10924                 struct cfg80211_cqm_config *cqm_config;
10925
10926                 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) +
10927                                      n_thresholds * sizeof(s32), GFP_KERNEL);
10928                 if (!cqm_config) {
10929                         err = -ENOMEM;
10930                         goto unlock;
10931                 }
10932
10933                 cqm_config->rssi_hyst = hysteresis;
10934                 cqm_config->n_rssi_thresholds = n_thresholds;
10935                 memcpy(cqm_config->rssi_thresholds, thresholds,
10936                        n_thresholds * sizeof(s32));
10937
10938                 wdev->cqm_config = cqm_config;
10939         }
10940
10941         err = cfg80211_cqm_rssi_update(rdev, dev);
10942
10943 unlock:
10944         wdev_unlock(wdev);
10945
10946         return err;
10947 }
10948
10949 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info)
10950 {
10951         struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1];
10952         struct nlattr *cqm;
10953         int err;
10954
10955         cqm = info->attrs[NL80211_ATTR_CQM];
10956         if (!cqm)
10957                 return -EINVAL;
10958
10959         err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm,
10960                                           nl80211_attr_cqm_policy,
10961                                           info->extack);
10962         if (err)
10963                 return err;
10964
10965         if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] &&
10966             attrs[NL80211_ATTR_CQM_RSSI_HYST]) {
10967                 const s32 *thresholds =
10968                         nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10969                 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]);
10970                 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]);
10971
10972                 if (len % 4)
10973                         return -EINVAL;
10974
10975                 return nl80211_set_cqm_rssi(info, thresholds, len / 4,
10976                                             hysteresis);
10977         }
10978
10979         if (attrs[NL80211_ATTR_CQM_TXE_RATE] &&
10980             attrs[NL80211_ATTR_CQM_TXE_PKTS] &&
10981             attrs[NL80211_ATTR_CQM_TXE_INTVL]) {
10982                 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]);
10983                 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]);
10984                 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]);
10985
10986                 return nl80211_set_cqm_txe(info, rate, pkts, intvl);
10987         }
10988
10989         return -EINVAL;
10990 }
10991
10992 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info)
10993 {
10994         struct cfg80211_registered_device *rdev = info->user_ptr[0];
10995         struct net_device *dev = info->user_ptr[1];
10996         struct ocb_setup setup = {};
10997         int err;
10998
10999         err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11000         if (err)
11001                 return err;
11002
11003         return cfg80211_join_ocb(rdev, dev, &setup);
11004 }
11005
11006 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info)
11007 {
11008         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11009         struct net_device *dev = info->user_ptr[1];
11010
11011         return cfg80211_leave_ocb(rdev, dev);
11012 }
11013
11014 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
11015 {
11016         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11017         struct net_device *dev = info->user_ptr[1];
11018         struct mesh_config cfg;
11019         struct mesh_setup setup;
11020         int err;
11021
11022         /* start with default */
11023         memcpy(&cfg, &default_mesh_config, sizeof(cfg));
11024         memcpy(&setup, &default_mesh_setup, sizeof(setup));
11025
11026         if (info->attrs[NL80211_ATTR_MESH_CONFIG]) {
11027                 /* and parse parameters if given */
11028                 err = nl80211_parse_mesh_config(info, &cfg, NULL);
11029                 if (err)
11030                         return err;
11031         }
11032
11033         if (!info->attrs[NL80211_ATTR_MESH_ID] ||
11034             !nla_len(info->attrs[NL80211_ATTR_MESH_ID]))
11035                 return -EINVAL;
11036
11037         setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]);
11038         setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]);
11039
11040         if (info->attrs[NL80211_ATTR_MCAST_RATE] &&
11041             !nl80211_parse_mcast_rate(rdev, setup.mcast_rate,
11042                             nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE])))
11043                         return -EINVAL;
11044
11045         if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) {
11046                 setup.beacon_interval =
11047                         nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]);
11048
11049                 err = cfg80211_validate_beacon_int(rdev,
11050                                                    NL80211_IFTYPE_MESH_POINT,
11051                                                    setup.beacon_interval);
11052                 if (err)
11053                         return err;
11054         }
11055
11056         if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) {
11057                 setup.dtim_period =
11058                         nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]);
11059                 if (setup.dtim_period < 1 || setup.dtim_period > 100)
11060                         return -EINVAL;
11061         }
11062
11063         if (info->attrs[NL80211_ATTR_MESH_SETUP]) {
11064                 /* parse additional setup parameters if given */
11065                 err = nl80211_parse_mesh_setup(info, &setup);
11066                 if (err)
11067                         return err;
11068         }
11069
11070         if (setup.user_mpm)
11071                 cfg.auto_open_plinks = false;
11072
11073         if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) {
11074                 err = nl80211_parse_chandef(rdev, info, &setup.chandef);
11075                 if (err)
11076                         return err;
11077         } else {
11078                 /* __cfg80211_join_mesh() will sort it out */
11079                 setup.chandef.chan = NULL;
11080         }
11081
11082         if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) {
11083                 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11084                 int n_rates =
11085                         nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]);
11086                 struct ieee80211_supported_band *sband;
11087
11088                 if (!setup.chandef.chan)
11089                         return -EINVAL;
11090
11091                 sband = rdev->wiphy.bands[setup.chandef.chan->band];
11092
11093                 err = ieee80211_get_ratemask(sband, rates, n_rates,
11094                                              &setup.basic_rates);
11095                 if (err)
11096                         return err;
11097         }
11098
11099         if (info->attrs[NL80211_ATTR_TX_RATES]) {
11100                 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
11101                 if (err)
11102                         return err;
11103
11104                 if (!setup.chandef.chan)
11105                         return -EINVAL;
11106
11107                 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band,
11108                                               &setup.beacon_rate);
11109                 if (err)
11110                         return err;
11111         }
11112
11113         setup.userspace_handles_dfs =
11114                 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]);
11115
11116         if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) {
11117                 int r = validate_pae_over_nl80211(rdev, info);
11118
11119                 if (r < 0)
11120                         return r;
11121
11122                 setup.control_port_over_nl80211 = true;
11123         }
11124
11125         wdev_lock(dev->ieee80211_ptr);
11126         err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg);
11127         if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER])
11128                 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid;
11129         wdev_unlock(dev->ieee80211_ptr);
11130
11131         return err;
11132 }
11133
11134 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info)
11135 {
11136         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11137         struct net_device *dev = info->user_ptr[1];
11138
11139         return cfg80211_leave_mesh(rdev, dev);
11140 }
11141
11142 #ifdef CONFIG_PM
11143 static int nl80211_send_wowlan_patterns(struct sk_buff *msg,
11144                                         struct cfg80211_registered_device *rdev)
11145 {
11146         struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config;
11147         struct nlattr *nl_pats, *nl_pat;
11148         int i, pat_len;
11149
11150         if (!wowlan->n_patterns)
11151                 return 0;
11152
11153         nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN);
11154         if (!nl_pats)
11155                 return -ENOBUFS;
11156
11157         for (i = 0; i < wowlan->n_patterns; i++) {
11158                 nl_pat = nla_nest_start_noflag(msg, i + 1);
11159                 if (!nl_pat)
11160                         return -ENOBUFS;
11161                 pat_len = wowlan->patterns[i].pattern_len;
11162                 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8),
11163                             wowlan->patterns[i].mask) ||
11164                     nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11165                             wowlan->patterns[i].pattern) ||
11166                     nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11167                                 wowlan->patterns[i].pkt_offset))
11168                         return -ENOBUFS;
11169                 nla_nest_end(msg, nl_pat);
11170         }
11171         nla_nest_end(msg, nl_pats);
11172
11173         return 0;
11174 }
11175
11176 static int nl80211_send_wowlan_tcp(struct sk_buff *msg,
11177                                    struct cfg80211_wowlan_tcp *tcp)
11178 {
11179         struct nlattr *nl_tcp;
11180
11181         if (!tcp)
11182                 return 0;
11183
11184         nl_tcp = nla_nest_start_noflag(msg,
11185                                        NL80211_WOWLAN_TRIG_TCP_CONNECTION);
11186         if (!nl_tcp)
11187                 return -ENOBUFS;
11188
11189         if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) ||
11190             nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) ||
11191             nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) ||
11192             nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) ||
11193             nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) ||
11194             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD,
11195                     tcp->payload_len, tcp->payload) ||
11196             nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL,
11197                         tcp->data_interval) ||
11198             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD,
11199                     tcp->wake_len, tcp->wake_data) ||
11200             nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK,
11201                     DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask))
11202                 return -ENOBUFS;
11203
11204         if (tcp->payload_seq.len &&
11205             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ,
11206                     sizeof(tcp->payload_seq), &tcp->payload_seq))
11207                 return -ENOBUFS;
11208
11209         if (tcp->payload_tok.len &&
11210             nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN,
11211                     sizeof(tcp->payload_tok) + tcp->tokens_size,
11212                     &tcp->payload_tok))
11213                 return -ENOBUFS;
11214
11215         nla_nest_end(msg, nl_tcp);
11216
11217         return 0;
11218 }
11219
11220 static int nl80211_send_wowlan_nd(struct sk_buff *msg,
11221                                   struct cfg80211_sched_scan_request *req)
11222 {
11223         struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan;
11224         int i;
11225
11226         if (!req)
11227                 return 0;
11228
11229         nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT);
11230         if (!nd)
11231                 return -ENOBUFS;
11232
11233         if (req->n_scan_plans == 1 &&
11234             nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL,
11235                         req->scan_plans[0].interval * 1000))
11236                 return -ENOBUFS;
11237
11238         if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay))
11239                 return -ENOBUFS;
11240
11241         if (req->relative_rssi_set) {
11242                 struct nl80211_bss_select_rssi_adjust rssi_adjust;
11243
11244                 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI,
11245                                req->relative_rssi))
11246                         return -ENOBUFS;
11247
11248                 rssi_adjust.band = req->rssi_adjust.band;
11249                 rssi_adjust.delta = req->rssi_adjust.delta;
11250                 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST,
11251                             sizeof(rssi_adjust), &rssi_adjust))
11252                         return -ENOBUFS;
11253         }
11254
11255         freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
11256         if (!freqs)
11257                 return -ENOBUFS;
11258
11259         for (i = 0; i < req->n_channels; i++) {
11260                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
11261                         return -ENOBUFS;
11262         }
11263
11264         nla_nest_end(msg, freqs);
11265
11266         if (req->n_match_sets) {
11267                 matches = nla_nest_start_noflag(msg,
11268                                                 NL80211_ATTR_SCHED_SCAN_MATCH);
11269                 if (!matches)
11270                         return -ENOBUFS;
11271
11272                 for (i = 0; i < req->n_match_sets; i++) {
11273                         match = nla_nest_start_noflag(msg, i);
11274                         if (!match)
11275                                 return -ENOBUFS;
11276
11277                         if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID,
11278                                     req->match_sets[i].ssid.ssid_len,
11279                                     req->match_sets[i].ssid.ssid))
11280                                 return -ENOBUFS;
11281                         nla_nest_end(msg, match);
11282                 }
11283                 nla_nest_end(msg, matches);
11284         }
11285
11286         scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS);
11287         if (!scan_plans)
11288                 return -ENOBUFS;
11289
11290         for (i = 0; i < req->n_scan_plans; i++) {
11291                 scan_plan = nla_nest_start_noflag(msg, i + 1);
11292                 if (!scan_plan)
11293                         return -ENOBUFS;
11294
11295                 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL,
11296                                 req->scan_plans[i].interval) ||
11297                     (req->scan_plans[i].iterations &&
11298                      nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS,
11299                                  req->scan_plans[i].iterations)))
11300                         return -ENOBUFS;
11301                 nla_nest_end(msg, scan_plan);
11302         }
11303         nla_nest_end(msg, scan_plans);
11304
11305         nla_nest_end(msg, nd);
11306
11307         return 0;
11308 }
11309
11310 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info)
11311 {
11312         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11313         struct sk_buff *msg;
11314         void *hdr;
11315         u32 size = NLMSG_DEFAULT_SIZE;
11316
11317         if (!rdev->wiphy.wowlan)
11318                 return -EOPNOTSUPP;
11319
11320         if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) {
11321                 /* adjust size to have room for all the data */
11322                 size += rdev->wiphy.wowlan_config->tcp->tokens_size +
11323                         rdev->wiphy.wowlan_config->tcp->payload_len +
11324                         rdev->wiphy.wowlan_config->tcp->wake_len +
11325                         rdev->wiphy.wowlan_config->tcp->wake_len / 8;
11326         }
11327
11328         msg = nlmsg_new(size, GFP_KERNEL);
11329         if (!msg)
11330                 return -ENOMEM;
11331
11332         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11333                              NL80211_CMD_GET_WOWLAN);
11334         if (!hdr)
11335                 goto nla_put_failure;
11336
11337         if (rdev->wiphy.wowlan_config) {
11338                 struct nlattr *nl_wowlan;
11339
11340                 nl_wowlan = nla_nest_start_noflag(msg,
11341                                                   NL80211_ATTR_WOWLAN_TRIGGERS);
11342                 if (!nl_wowlan)
11343                         goto nla_put_failure;
11344
11345                 if ((rdev->wiphy.wowlan_config->any &&
11346                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) ||
11347                     (rdev->wiphy.wowlan_config->disconnect &&
11348                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) ||
11349                     (rdev->wiphy.wowlan_config->magic_pkt &&
11350                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) ||
11351                     (rdev->wiphy.wowlan_config->gtk_rekey_failure &&
11352                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) ||
11353                     (rdev->wiphy.wowlan_config->eap_identity_req &&
11354                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) ||
11355                     (rdev->wiphy.wowlan_config->four_way_handshake &&
11356                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) ||
11357                     (rdev->wiphy.wowlan_config->rfkill_release &&
11358                      nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)))
11359                         goto nla_put_failure;
11360
11361                 if (nl80211_send_wowlan_patterns(msg, rdev))
11362                         goto nla_put_failure;
11363
11364                 if (nl80211_send_wowlan_tcp(msg,
11365                                             rdev->wiphy.wowlan_config->tcp))
11366                         goto nla_put_failure;
11367
11368                 if (nl80211_send_wowlan_nd(
11369                             msg,
11370                             rdev->wiphy.wowlan_config->nd_config))
11371                         goto nla_put_failure;
11372
11373                 nla_nest_end(msg, nl_wowlan);
11374         }
11375
11376         genlmsg_end(msg, hdr);
11377         return genlmsg_reply(msg, info);
11378
11379 nla_put_failure:
11380         nlmsg_free(msg);
11381         return -ENOBUFS;
11382 }
11383
11384 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
11385                                     struct nlattr *attr,
11386                                     struct cfg80211_wowlan *trig)
11387 {
11388         struct nlattr *tb[NUM_NL80211_WOWLAN_TCP];
11389         struct cfg80211_wowlan_tcp *cfg;
11390         struct nl80211_wowlan_tcp_data_token *tok = NULL;
11391         struct nl80211_wowlan_tcp_data_seq *seq = NULL;
11392         u32 size;
11393         u32 data_size, wake_size, tokens_size = 0, wake_mask_size;
11394         int err, port;
11395
11396         if (!rdev->wiphy.wowlan->tcp)
11397                 return -EINVAL;
11398
11399         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr,
11400                                           nl80211_wowlan_tcp_policy, NULL);
11401         if (err)
11402                 return err;
11403
11404         if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] ||
11405             !tb[NL80211_WOWLAN_TCP_DST_IPV4] ||
11406             !tb[NL80211_WOWLAN_TCP_DST_MAC] ||
11407             !tb[NL80211_WOWLAN_TCP_DST_PORT] ||
11408             !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] ||
11409             !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] ||
11410             !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] ||
11411             !tb[NL80211_WOWLAN_TCP_WAKE_MASK])
11412                 return -EINVAL;
11413
11414         data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]);
11415         if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max)
11416                 return -EINVAL;
11417
11418         if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) >
11419                         rdev->wiphy.wowlan->tcp->data_interval_max ||
11420             nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0)
11421                 return -EINVAL;
11422
11423         wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]);
11424         if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max)
11425                 return -EINVAL;
11426
11427         wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]);
11428         if (wake_mask_size != DIV_ROUND_UP(wake_size, 8))
11429                 return -EINVAL;
11430
11431         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) {
11432                 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11433
11434                 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]);
11435                 tokens_size = tokln - sizeof(*tok);
11436
11437                 if (!tok->len || tokens_size % tok->len)
11438                         return -EINVAL;
11439                 if (!rdev->wiphy.wowlan->tcp->tok)
11440                         return -EINVAL;
11441                 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len)
11442                         return -EINVAL;
11443                 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len)
11444                         return -EINVAL;
11445                 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize)
11446                         return -EINVAL;
11447                 if (tok->offset + tok->len > data_size)
11448                         return -EINVAL;
11449         }
11450
11451         if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) {
11452                 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]);
11453                 if (!rdev->wiphy.wowlan->tcp->seq)
11454                         return -EINVAL;
11455                 if (seq->len == 0 || seq->len > 4)
11456                         return -EINVAL;
11457                 if (seq->len + seq->offset > data_size)
11458                         return -EINVAL;
11459         }
11460
11461         size = sizeof(*cfg);
11462         size += data_size;
11463         size += wake_size + wake_mask_size;
11464         size += tokens_size;
11465
11466         cfg = kzalloc(size, GFP_KERNEL);
11467         if (!cfg)
11468                 return -ENOMEM;
11469         cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
11470         cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
11471         memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
11472                ETH_ALEN);
11473         if (tb[NL80211_WOWLAN_TCP_SRC_PORT])
11474                 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]);
11475         else
11476                 port = 0;
11477 #ifdef CONFIG_INET
11478         /* allocate a socket and port for it and use it */
11479         err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM,
11480                             IPPROTO_TCP, &cfg->sock, 1);
11481         if (err) {
11482                 kfree(cfg);
11483                 return err;
11484         }
11485         if (inet_csk_get_port(cfg->sock->sk, port)) {
11486                 sock_release(cfg->sock);
11487                 kfree(cfg);
11488                 return -EADDRINUSE;
11489         }
11490         cfg->src_port = inet_sk(cfg->sock->sk)->inet_num;
11491 #else
11492         if (!port) {
11493                 kfree(cfg);
11494                 return -EINVAL;
11495         }
11496         cfg->src_port = port;
11497 #endif
11498
11499         cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]);
11500         cfg->payload_len = data_size;
11501         cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size;
11502         memcpy((void *)cfg->payload,
11503                nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]),
11504                data_size);
11505         if (seq)
11506                 cfg->payload_seq = *seq;
11507         cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]);
11508         cfg->wake_len = wake_size;
11509         cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size;
11510         memcpy((void *)cfg->wake_data,
11511                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]),
11512                wake_size);
11513         cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size +
11514                          data_size + wake_size;
11515         memcpy((void *)cfg->wake_mask,
11516                nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]),
11517                wake_mask_size);
11518         if (tok) {
11519                 cfg->tokens_size = tokens_size;
11520                 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size);
11521         }
11522
11523         trig->tcp = cfg;
11524
11525         return 0;
11526 }
11527
11528 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev,
11529                                    const struct wiphy_wowlan_support *wowlan,
11530                                    struct nlattr *attr,
11531                                    struct cfg80211_wowlan *trig)
11532 {
11533         struct nlattr **tb;
11534         int err;
11535
11536         tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL);
11537         if (!tb)
11538                 return -ENOMEM;
11539
11540         if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) {
11541                 err = -EOPNOTSUPP;
11542                 goto out;
11543         }
11544
11545         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr,
11546                                           nl80211_policy, NULL);
11547         if (err)
11548                 goto out;
11549
11550         trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb,
11551                                                    wowlan->max_nd_match_sets);
11552         err = PTR_ERR_OR_ZERO(trig->nd_config);
11553         if (err)
11554                 trig->nd_config = NULL;
11555
11556 out:
11557         kfree(tb);
11558         return err;
11559 }
11560
11561 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info)
11562 {
11563         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11564         struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG];
11565         struct cfg80211_wowlan new_triggers = {};
11566         struct cfg80211_wowlan *ntrig;
11567         const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan;
11568         int err, i;
11569         bool prev_enabled = rdev->wiphy.wowlan_config;
11570         bool regular = false;
11571
11572         if (!wowlan)
11573                 return -EOPNOTSUPP;
11574
11575         if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) {
11576                 cfg80211_rdev_free_wowlan(rdev);
11577                 rdev->wiphy.wowlan_config = NULL;
11578                 goto set_wakeup;
11579         }
11580
11581         err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG,
11582                                           info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS],
11583                                           nl80211_wowlan_policy, info->extack);
11584         if (err)
11585                 return err;
11586
11587         if (tb[NL80211_WOWLAN_TRIG_ANY]) {
11588                 if (!(wowlan->flags & WIPHY_WOWLAN_ANY))
11589                         return -EINVAL;
11590                 new_triggers.any = true;
11591         }
11592
11593         if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) {
11594                 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT))
11595                         return -EINVAL;
11596                 new_triggers.disconnect = true;
11597                 regular = true;
11598         }
11599
11600         if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) {
11601                 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT))
11602                         return -EINVAL;
11603                 new_triggers.magic_pkt = true;
11604                 regular = true;
11605         }
11606
11607         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED])
11608                 return -EINVAL;
11609
11610         if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) {
11611                 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE))
11612                         return -EINVAL;
11613                 new_triggers.gtk_rekey_failure = true;
11614                 regular = true;
11615         }
11616
11617         if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) {
11618                 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ))
11619                         return -EINVAL;
11620                 new_triggers.eap_identity_req = true;
11621                 regular = true;
11622         }
11623
11624         if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) {
11625                 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE))
11626                         return -EINVAL;
11627                 new_triggers.four_way_handshake = true;
11628                 regular = true;
11629         }
11630
11631         if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) {
11632                 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE))
11633                         return -EINVAL;
11634                 new_triggers.rfkill_release = true;
11635                 regular = true;
11636         }
11637
11638         if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) {
11639                 struct nlattr *pat;
11640                 int n_patterns = 0;
11641                 int rem, pat_len, mask_len, pkt_offset;
11642                 struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11643
11644                 regular = true;
11645
11646                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11647                                     rem)
11648                         n_patterns++;
11649                 if (n_patterns > wowlan->n_patterns)
11650                         return -EINVAL;
11651
11652                 new_triggers.patterns = kcalloc(n_patterns,
11653                                                 sizeof(new_triggers.patterns[0]),
11654                                                 GFP_KERNEL);
11655                 if (!new_triggers.patterns)
11656                         return -ENOMEM;
11657
11658                 new_triggers.n_patterns = n_patterns;
11659                 i = 0;
11660
11661                 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN],
11662                                     rem) {
11663                         u8 *mask_pat;
11664
11665                         err = nla_parse_nested_deprecated(pat_tb,
11666                                                           MAX_NL80211_PKTPAT,
11667                                                           pat,
11668                                                           nl80211_packet_pattern_policy,
11669                                                           info->extack);
11670                         if (err)
11671                                 goto error;
11672
11673                         err = -EINVAL;
11674                         if (!pat_tb[NL80211_PKTPAT_MASK] ||
11675                             !pat_tb[NL80211_PKTPAT_PATTERN])
11676                                 goto error;
11677                         pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11678                         mask_len = DIV_ROUND_UP(pat_len, 8);
11679                         if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11680                                 goto error;
11681                         if (pat_len > wowlan->pattern_max_len ||
11682                             pat_len < wowlan->pattern_min_len)
11683                                 goto error;
11684
11685                         if (!pat_tb[NL80211_PKTPAT_OFFSET])
11686                                 pkt_offset = 0;
11687                         else
11688                                 pkt_offset = nla_get_u32(
11689                                         pat_tb[NL80211_PKTPAT_OFFSET]);
11690                         if (pkt_offset > wowlan->max_pkt_offset)
11691                                 goto error;
11692                         new_triggers.patterns[i].pkt_offset = pkt_offset;
11693
11694                         mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11695                         if (!mask_pat) {
11696                                 err = -ENOMEM;
11697                                 goto error;
11698                         }
11699                         new_triggers.patterns[i].mask = mask_pat;
11700                         memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11701                                mask_len);
11702                         mask_pat += mask_len;
11703                         new_triggers.patterns[i].pattern = mask_pat;
11704                         new_triggers.patterns[i].pattern_len = pat_len;
11705                         memcpy(mask_pat,
11706                                nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11707                                pat_len);
11708                         i++;
11709                 }
11710         }
11711
11712         if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) {
11713                 regular = true;
11714                 err = nl80211_parse_wowlan_tcp(
11715                         rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION],
11716                         &new_triggers);
11717                 if (err)
11718                         goto error;
11719         }
11720
11721         if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) {
11722                 regular = true;
11723                 err = nl80211_parse_wowlan_nd(
11724                         rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT],
11725                         &new_triggers);
11726                 if (err)
11727                         goto error;
11728         }
11729
11730         /* The 'any' trigger means the device continues operating more or less
11731          * as in its normal operation mode and wakes up the host on most of the
11732          * normal interrupts (like packet RX, ...)
11733          * It therefore makes little sense to combine with the more constrained
11734          * wakeup trigger modes.
11735          */
11736         if (new_triggers.any && regular) {
11737                 err = -EINVAL;
11738                 goto error;
11739         }
11740
11741         ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL);
11742         if (!ntrig) {
11743                 err = -ENOMEM;
11744                 goto error;
11745         }
11746         cfg80211_rdev_free_wowlan(rdev);
11747         rdev->wiphy.wowlan_config = ntrig;
11748
11749  set_wakeup:
11750         if (rdev->ops->set_wakeup &&
11751             prev_enabled != !!rdev->wiphy.wowlan_config)
11752                 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config);
11753
11754         return 0;
11755  error:
11756         for (i = 0; i < new_triggers.n_patterns; i++)
11757                 kfree(new_triggers.patterns[i].mask);
11758         kfree(new_triggers.patterns);
11759         if (new_triggers.tcp && new_triggers.tcp->sock)
11760                 sock_release(new_triggers.tcp->sock);
11761         kfree(new_triggers.tcp);
11762         kfree(new_triggers.nd_config);
11763         return err;
11764 }
11765 #endif
11766
11767 static int nl80211_send_coalesce_rules(struct sk_buff *msg,
11768                                        struct cfg80211_registered_device *rdev)
11769 {
11770         struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules;
11771         int i, j, pat_len;
11772         struct cfg80211_coalesce_rules *rule;
11773
11774         if (!rdev->coalesce->n_rules)
11775                 return 0;
11776
11777         nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE);
11778         if (!nl_rules)
11779                 return -ENOBUFS;
11780
11781         for (i = 0; i < rdev->coalesce->n_rules; i++) {
11782                 nl_rule = nla_nest_start_noflag(msg, i + 1);
11783                 if (!nl_rule)
11784                         return -ENOBUFS;
11785
11786                 rule = &rdev->coalesce->rules[i];
11787                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY,
11788                                 rule->delay))
11789                         return -ENOBUFS;
11790
11791                 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION,
11792                                 rule->condition))
11793                         return -ENOBUFS;
11794
11795                 nl_pats = nla_nest_start_noflag(msg,
11796                                                 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN);
11797                 if (!nl_pats)
11798                         return -ENOBUFS;
11799
11800                 for (j = 0; j < rule->n_patterns; j++) {
11801                         nl_pat = nla_nest_start_noflag(msg, j + 1);
11802                         if (!nl_pat)
11803                                 return -ENOBUFS;
11804                         pat_len = rule->patterns[j].pattern_len;
11805                         if (nla_put(msg, NL80211_PKTPAT_MASK,
11806                                     DIV_ROUND_UP(pat_len, 8),
11807                                     rule->patterns[j].mask) ||
11808                             nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len,
11809                                     rule->patterns[j].pattern) ||
11810                             nla_put_u32(msg, NL80211_PKTPAT_OFFSET,
11811                                         rule->patterns[j].pkt_offset))
11812                                 return -ENOBUFS;
11813                         nla_nest_end(msg, nl_pat);
11814                 }
11815                 nla_nest_end(msg, nl_pats);
11816                 nla_nest_end(msg, nl_rule);
11817         }
11818         nla_nest_end(msg, nl_rules);
11819
11820         return 0;
11821 }
11822
11823 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info)
11824 {
11825         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11826         struct sk_buff *msg;
11827         void *hdr;
11828
11829         if (!rdev->wiphy.coalesce)
11830                 return -EOPNOTSUPP;
11831
11832         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
11833         if (!msg)
11834                 return -ENOMEM;
11835
11836         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
11837                              NL80211_CMD_GET_COALESCE);
11838         if (!hdr)
11839                 goto nla_put_failure;
11840
11841         if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev))
11842                 goto nla_put_failure;
11843
11844         genlmsg_end(msg, hdr);
11845         return genlmsg_reply(msg, info);
11846
11847 nla_put_failure:
11848         nlmsg_free(msg);
11849         return -ENOBUFS;
11850 }
11851
11852 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev)
11853 {
11854         struct cfg80211_coalesce *coalesce = rdev->coalesce;
11855         int i, j;
11856         struct cfg80211_coalesce_rules *rule;
11857
11858         if (!coalesce)
11859                 return;
11860
11861         for (i = 0; i < coalesce->n_rules; i++) {
11862                 rule = &coalesce->rules[i];
11863                 for (j = 0; j < rule->n_patterns; j++)
11864                         kfree(rule->patterns[j].mask);
11865                 kfree(rule->patterns);
11866         }
11867         kfree(coalesce->rules);
11868         kfree(coalesce);
11869         rdev->coalesce = NULL;
11870 }
11871
11872 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev,
11873                                        struct nlattr *rule,
11874                                        struct cfg80211_coalesce_rules *new_rule)
11875 {
11876         int err, i;
11877         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11878         struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat;
11879         int rem, pat_len, mask_len, pkt_offset, n_patterns = 0;
11880         struct nlattr *pat_tb[NUM_NL80211_PKTPAT];
11881
11882         err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX,
11883                                           rule, nl80211_coalesce_policy, NULL);
11884         if (err)
11885                 return err;
11886
11887         if (tb[NL80211_ATTR_COALESCE_RULE_DELAY])
11888                 new_rule->delay =
11889                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]);
11890         if (new_rule->delay > coalesce->max_delay)
11891                 return -EINVAL;
11892
11893         if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION])
11894                 new_rule->condition =
11895                         nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]);
11896
11897         if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN])
11898                 return -EINVAL;
11899
11900         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11901                             rem)
11902                 n_patterns++;
11903         if (n_patterns > coalesce->n_patterns)
11904                 return -EINVAL;
11905
11906         new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]),
11907                                      GFP_KERNEL);
11908         if (!new_rule->patterns)
11909                 return -ENOMEM;
11910
11911         new_rule->n_patterns = n_patterns;
11912         i = 0;
11913
11914         nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN],
11915                             rem) {
11916                 u8 *mask_pat;
11917
11918                 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT,
11919                                                   pat,
11920                                                   nl80211_packet_pattern_policy,
11921                                                   NULL);
11922                 if (err)
11923                         return err;
11924
11925                 if (!pat_tb[NL80211_PKTPAT_MASK] ||
11926                     !pat_tb[NL80211_PKTPAT_PATTERN])
11927                         return -EINVAL;
11928                 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]);
11929                 mask_len = DIV_ROUND_UP(pat_len, 8);
11930                 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len)
11931                         return -EINVAL;
11932                 if (pat_len > coalesce->pattern_max_len ||
11933                     pat_len < coalesce->pattern_min_len)
11934                         return -EINVAL;
11935
11936                 if (!pat_tb[NL80211_PKTPAT_OFFSET])
11937                         pkt_offset = 0;
11938                 else
11939                         pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]);
11940                 if (pkt_offset > coalesce->max_pkt_offset)
11941                         return -EINVAL;
11942                 new_rule->patterns[i].pkt_offset = pkt_offset;
11943
11944                 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL);
11945                 if (!mask_pat)
11946                         return -ENOMEM;
11947
11948                 new_rule->patterns[i].mask = mask_pat;
11949                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]),
11950                        mask_len);
11951
11952                 mask_pat += mask_len;
11953                 new_rule->patterns[i].pattern = mask_pat;
11954                 new_rule->patterns[i].pattern_len = pat_len;
11955                 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]),
11956                        pat_len);
11957                 i++;
11958         }
11959
11960         return 0;
11961 }
11962
11963 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info)
11964 {
11965         struct cfg80211_registered_device *rdev = info->user_ptr[0];
11966         const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce;
11967         struct cfg80211_coalesce new_coalesce = {};
11968         struct cfg80211_coalesce *n_coalesce;
11969         int err, rem_rule, n_rules = 0, i, j;
11970         struct nlattr *rule;
11971         struct cfg80211_coalesce_rules *tmp_rule;
11972
11973         if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce)
11974                 return -EOPNOTSUPP;
11975
11976         if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) {
11977                 cfg80211_rdev_free_coalesce(rdev);
11978                 rdev_set_coalesce(rdev, NULL);
11979                 return 0;
11980         }
11981
11982         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11983                             rem_rule)
11984                 n_rules++;
11985         if (n_rules > coalesce->n_rules)
11986                 return -EINVAL;
11987
11988         new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]),
11989                                      GFP_KERNEL);
11990         if (!new_coalesce.rules)
11991                 return -ENOMEM;
11992
11993         new_coalesce.n_rules = n_rules;
11994         i = 0;
11995
11996         nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE],
11997                             rem_rule) {
11998                 err = nl80211_parse_coalesce_rule(rdev, rule,
11999                                                   &new_coalesce.rules[i]);
12000                 if (err)
12001                         goto error;
12002
12003                 i++;
12004         }
12005
12006         err = rdev_set_coalesce(rdev, &new_coalesce);
12007         if (err)
12008                 goto error;
12009
12010         n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL);
12011         if (!n_coalesce) {
12012                 err = -ENOMEM;
12013                 goto error;
12014         }
12015         cfg80211_rdev_free_coalesce(rdev);
12016         rdev->coalesce = n_coalesce;
12017
12018         return 0;
12019 error:
12020         for (i = 0; i < new_coalesce.n_rules; i++) {
12021                 tmp_rule = &new_coalesce.rules[i];
12022                 for (j = 0; j < tmp_rule->n_patterns; j++)
12023                         kfree(tmp_rule->patterns[j].mask);
12024                 kfree(tmp_rule->patterns);
12025         }
12026         kfree(new_coalesce.rules);
12027
12028         return err;
12029 }
12030
12031 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info)
12032 {
12033         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12034         struct net_device *dev = info->user_ptr[1];
12035         struct wireless_dev *wdev = dev->ieee80211_ptr;
12036         struct nlattr *tb[NUM_NL80211_REKEY_DATA];
12037         struct cfg80211_gtk_rekey_data rekey_data;
12038         int err;
12039
12040         if (!info->attrs[NL80211_ATTR_REKEY_DATA])
12041                 return -EINVAL;
12042
12043         err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA,
12044                                           info->attrs[NL80211_ATTR_REKEY_DATA],
12045                                           nl80211_rekey_policy, info->extack);
12046         if (err)
12047                 return err;
12048
12049         if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] ||
12050             !tb[NL80211_REKEY_DATA_KCK])
12051                 return -EINVAL;
12052         if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN)
12053                 return -ERANGE;
12054         if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN)
12055                 return -ERANGE;
12056         if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN)
12057                 return -ERANGE;
12058
12059         rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]);
12060         rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]);
12061         rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]);
12062
12063         wdev_lock(wdev);
12064         if (!wdev->current_bss) {
12065                 err = -ENOTCONN;
12066                 goto out;
12067         }
12068
12069         if (!rdev->ops->set_rekey_data) {
12070                 err = -EOPNOTSUPP;
12071                 goto out;
12072         }
12073
12074         err = rdev_set_rekey_data(rdev, dev, &rekey_data);
12075  out:
12076         wdev_unlock(wdev);
12077         return err;
12078 }
12079
12080 static int nl80211_register_unexpected_frame(struct sk_buff *skb,
12081                                              struct genl_info *info)
12082 {
12083         struct net_device *dev = info->user_ptr[1];
12084         struct wireless_dev *wdev = dev->ieee80211_ptr;
12085
12086         if (wdev->iftype != NL80211_IFTYPE_AP &&
12087             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12088                 return -EINVAL;
12089
12090         if (wdev->ap_unexpected_nlportid)
12091                 return -EBUSY;
12092
12093         wdev->ap_unexpected_nlportid = info->snd_portid;
12094         return 0;
12095 }
12096
12097 static int nl80211_probe_client(struct sk_buff *skb,
12098                                 struct genl_info *info)
12099 {
12100         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12101         struct net_device *dev = info->user_ptr[1];
12102         struct wireless_dev *wdev = dev->ieee80211_ptr;
12103         struct sk_buff *msg;
12104         void *hdr;
12105         const u8 *addr;
12106         u64 cookie;
12107         int err;
12108
12109         if (wdev->iftype != NL80211_IFTYPE_AP &&
12110             wdev->iftype != NL80211_IFTYPE_P2P_GO)
12111                 return -EOPNOTSUPP;
12112
12113         if (!info->attrs[NL80211_ATTR_MAC])
12114                 return -EINVAL;
12115
12116         if (!rdev->ops->probe_client)
12117                 return -EOPNOTSUPP;
12118
12119         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12120         if (!msg)
12121                 return -ENOMEM;
12122
12123         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12124                              NL80211_CMD_PROBE_CLIENT);
12125         if (!hdr) {
12126                 err = -ENOBUFS;
12127                 goto free_msg;
12128         }
12129
12130         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
12131
12132         err = rdev_probe_client(rdev, dev, addr, &cookie);
12133         if (err)
12134                 goto free_msg;
12135
12136         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12137                               NL80211_ATTR_PAD))
12138                 goto nla_put_failure;
12139
12140         genlmsg_end(msg, hdr);
12141
12142         return genlmsg_reply(msg, info);
12143
12144  nla_put_failure:
12145         err = -ENOBUFS;
12146  free_msg:
12147         nlmsg_free(msg);
12148         return err;
12149 }
12150
12151 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info)
12152 {
12153         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12154         struct cfg80211_beacon_registration *reg, *nreg;
12155         int rv;
12156
12157         if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS))
12158                 return -EOPNOTSUPP;
12159
12160         nreg = kzalloc(sizeof(*nreg), GFP_KERNEL);
12161         if (!nreg)
12162                 return -ENOMEM;
12163
12164         /* First, check if already registered. */
12165         spin_lock_bh(&rdev->beacon_registrations_lock);
12166         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
12167                 if (reg->nlportid == info->snd_portid) {
12168                         rv = -EALREADY;
12169                         goto out_err;
12170                 }
12171         }
12172         /* Add it to the list */
12173         nreg->nlportid = info->snd_portid;
12174         list_add(&nreg->list, &rdev->beacon_registrations);
12175
12176         spin_unlock_bh(&rdev->beacon_registrations_lock);
12177
12178         return 0;
12179 out_err:
12180         spin_unlock_bh(&rdev->beacon_registrations_lock);
12181         kfree(nreg);
12182         return rv;
12183 }
12184
12185 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info)
12186 {
12187         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12188         struct wireless_dev *wdev = info->user_ptr[1];
12189         int err;
12190
12191         if (!rdev->ops->start_p2p_device)
12192                 return -EOPNOTSUPP;
12193
12194         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12195                 return -EOPNOTSUPP;
12196
12197         if (wdev_running(wdev))
12198                 return 0;
12199
12200         if (rfkill_blocked(rdev->rfkill))
12201                 return -ERFKILL;
12202
12203         err = rdev_start_p2p_device(rdev, wdev);
12204         if (err)
12205                 return err;
12206
12207         wdev->is_running = true;
12208         rdev->opencount++;
12209
12210         return 0;
12211 }
12212
12213 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info)
12214 {
12215         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12216         struct wireless_dev *wdev = info->user_ptr[1];
12217
12218         if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE)
12219                 return -EOPNOTSUPP;
12220
12221         if (!rdev->ops->stop_p2p_device)
12222                 return -EOPNOTSUPP;
12223
12224         cfg80211_stop_p2p_device(rdev, wdev);
12225
12226         return 0;
12227 }
12228
12229 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info)
12230 {
12231         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12232         struct wireless_dev *wdev = info->user_ptr[1];
12233         struct cfg80211_nan_conf conf = {};
12234         int err;
12235
12236         if (wdev->iftype != NL80211_IFTYPE_NAN)
12237                 return -EOPNOTSUPP;
12238
12239         if (wdev_running(wdev))
12240                 return -EEXIST;
12241
12242         if (rfkill_blocked(rdev->rfkill))
12243                 return -ERFKILL;
12244
12245         if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF])
12246                 return -EINVAL;
12247
12248         conf.master_pref =
12249                 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12250
12251         if (info->attrs[NL80211_ATTR_BANDS]) {
12252                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12253
12254                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12255                         return -EOPNOTSUPP;
12256
12257                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12258                         return -EINVAL;
12259
12260                 conf.bands = bands;
12261         }
12262
12263         err = rdev_start_nan(rdev, wdev, &conf);
12264         if (err)
12265                 return err;
12266
12267         wdev->is_running = true;
12268         rdev->opencount++;
12269
12270         return 0;
12271 }
12272
12273 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info)
12274 {
12275         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12276         struct wireless_dev *wdev = info->user_ptr[1];
12277
12278         if (wdev->iftype != NL80211_IFTYPE_NAN)
12279                 return -EOPNOTSUPP;
12280
12281         cfg80211_stop_nan(rdev, wdev);
12282
12283         return 0;
12284 }
12285
12286 static int validate_nan_filter(struct nlattr *filter_attr)
12287 {
12288         struct nlattr *attr;
12289         int len = 0, n_entries = 0, rem;
12290
12291         nla_for_each_nested(attr, filter_attr, rem) {
12292                 len += nla_len(attr);
12293                 n_entries++;
12294         }
12295
12296         if (len >= U8_MAX)
12297                 return -EINVAL;
12298
12299         return n_entries;
12300 }
12301
12302 static int handle_nan_filter(struct nlattr *attr_filter,
12303                              struct cfg80211_nan_func *func,
12304                              bool tx)
12305 {
12306         struct nlattr *attr;
12307         int n_entries, rem, i;
12308         struct cfg80211_nan_func_filter *filter;
12309
12310         n_entries = validate_nan_filter(attr_filter);
12311         if (n_entries < 0)
12312                 return n_entries;
12313
12314         BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters));
12315
12316         filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL);
12317         if (!filter)
12318                 return -ENOMEM;
12319
12320         i = 0;
12321         nla_for_each_nested(attr, attr_filter, rem) {
12322                 filter[i].filter = nla_memdup(attr, GFP_KERNEL);
12323                 filter[i].len = nla_len(attr);
12324                 i++;
12325         }
12326         if (tx) {
12327                 func->num_tx_filters = n_entries;
12328                 func->tx_filters = filter;
12329         } else {
12330                 func->num_rx_filters = n_entries;
12331                 func->rx_filters = filter;
12332         }
12333
12334         return 0;
12335 }
12336
12337 static int nl80211_nan_add_func(struct sk_buff *skb,
12338                                 struct genl_info *info)
12339 {
12340         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12341         struct wireless_dev *wdev = info->user_ptr[1];
12342         struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr;
12343         struct cfg80211_nan_func *func;
12344         struct sk_buff *msg = NULL;
12345         void *hdr = NULL;
12346         int err = 0;
12347
12348         if (wdev->iftype != NL80211_IFTYPE_NAN)
12349                 return -EOPNOTSUPP;
12350
12351         if (!wdev_running(wdev))
12352                 return -ENOTCONN;
12353
12354         if (!info->attrs[NL80211_ATTR_NAN_FUNC])
12355                 return -EINVAL;
12356
12357         err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX,
12358                                           info->attrs[NL80211_ATTR_NAN_FUNC],
12359                                           nl80211_nan_func_policy,
12360                                           info->extack);
12361         if (err)
12362                 return err;
12363
12364         func = kzalloc(sizeof(*func), GFP_KERNEL);
12365         if (!func)
12366                 return -ENOMEM;
12367
12368         func->cookie = cfg80211_assign_cookie(rdev);
12369
12370         if (!tb[NL80211_NAN_FUNC_TYPE] ||
12371             nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) {
12372                 err = -EINVAL;
12373                 goto out;
12374         }
12375
12376
12377         func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]);
12378
12379         if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) {
12380                 err = -EINVAL;
12381                 goto out;
12382         }
12383
12384         memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]),
12385                sizeof(func->service_id));
12386
12387         func->close_range =
12388                 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]);
12389
12390         if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) {
12391                 func->serv_spec_info_len =
12392                         nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]);
12393                 func->serv_spec_info =
12394                         kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]),
12395                                 func->serv_spec_info_len,
12396                                 GFP_KERNEL);
12397                 if (!func->serv_spec_info) {
12398                         err = -ENOMEM;
12399                         goto out;
12400                 }
12401         }
12402
12403         if (tb[NL80211_NAN_FUNC_TTL])
12404                 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]);
12405
12406         switch (func->type) {
12407         case NL80211_NAN_FUNC_PUBLISH:
12408                 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) {
12409                         err = -EINVAL;
12410                         goto out;
12411                 }
12412
12413                 func->publish_type =
12414                         nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]);
12415                 func->publish_bcast =
12416                         nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]);
12417
12418                 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) &&
12419                         func->publish_bcast) {
12420                         err = -EINVAL;
12421                         goto out;
12422                 }
12423                 break;
12424         case NL80211_NAN_FUNC_SUBSCRIBE:
12425                 func->subscribe_active =
12426                         nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]);
12427                 break;
12428         case NL80211_NAN_FUNC_FOLLOW_UP:
12429                 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] ||
12430                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] ||
12431                     !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) {
12432                         err = -EINVAL;
12433                         goto out;
12434                 }
12435
12436                 func->followup_id =
12437                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]);
12438                 func->followup_reqid =
12439                         nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]);
12440                 memcpy(func->followup_dest.addr,
12441                        nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]),
12442                        sizeof(func->followup_dest.addr));
12443                 if (func->ttl) {
12444                         err = -EINVAL;
12445                         goto out;
12446                 }
12447                 break;
12448         default:
12449                 err = -EINVAL;
12450                 goto out;
12451         }
12452
12453         if (tb[NL80211_NAN_FUNC_SRF]) {
12454                 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR];
12455
12456                 err = nla_parse_nested_deprecated(srf_tb,
12457                                                   NL80211_NAN_SRF_ATTR_MAX,
12458                                                   tb[NL80211_NAN_FUNC_SRF],
12459                                                   nl80211_nan_srf_policy,
12460                                                   info->extack);
12461                 if (err)
12462                         goto out;
12463
12464                 func->srf_include =
12465                         nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]);
12466
12467                 if (srf_tb[NL80211_NAN_SRF_BF]) {
12468                         if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] ||
12469                             !srf_tb[NL80211_NAN_SRF_BF_IDX]) {
12470                                 err = -EINVAL;
12471                                 goto out;
12472                         }
12473
12474                         func->srf_bf_len =
12475                                 nla_len(srf_tb[NL80211_NAN_SRF_BF]);
12476                         func->srf_bf =
12477                                 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]),
12478                                         func->srf_bf_len, GFP_KERNEL);
12479                         if (!func->srf_bf) {
12480                                 err = -ENOMEM;
12481                                 goto out;
12482                         }
12483
12484                         func->srf_bf_idx =
12485                                 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]);
12486                 } else {
12487                         struct nlattr *attr, *mac_attr =
12488                                 srf_tb[NL80211_NAN_SRF_MAC_ADDRS];
12489                         int n_entries, rem, i = 0;
12490
12491                         if (!mac_attr) {
12492                                 err = -EINVAL;
12493                                 goto out;
12494                         }
12495
12496                         n_entries = validate_acl_mac_addrs(mac_attr);
12497                         if (n_entries <= 0) {
12498                                 err = -EINVAL;
12499                                 goto out;
12500                         }
12501
12502                         func->srf_num_macs = n_entries;
12503                         func->srf_macs =
12504                                 kcalloc(n_entries, sizeof(*func->srf_macs),
12505                                         GFP_KERNEL);
12506                         if (!func->srf_macs) {
12507                                 err = -ENOMEM;
12508                                 goto out;
12509                         }
12510
12511                         nla_for_each_nested(attr, mac_attr, rem)
12512                                 memcpy(func->srf_macs[i++].addr, nla_data(attr),
12513                                        sizeof(*func->srf_macs));
12514                 }
12515         }
12516
12517         if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) {
12518                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER],
12519                                         func, true);
12520                 if (err)
12521                         goto out;
12522         }
12523
12524         if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) {
12525                 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER],
12526                                         func, false);
12527                 if (err)
12528                         goto out;
12529         }
12530
12531         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12532         if (!msg) {
12533                 err = -ENOMEM;
12534                 goto out;
12535         }
12536
12537         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12538                              NL80211_CMD_ADD_NAN_FUNCTION);
12539         /* This can't really happen - we just allocated 4KB */
12540         if (WARN_ON(!hdr)) {
12541                 err = -ENOMEM;
12542                 goto out;
12543         }
12544
12545         err = rdev_add_nan_func(rdev, wdev, func);
12546 out:
12547         if (err < 0) {
12548                 cfg80211_free_nan_func(func);
12549                 nlmsg_free(msg);
12550                 return err;
12551         }
12552
12553         /* propagate the instance id and cookie to userspace  */
12554         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie,
12555                               NL80211_ATTR_PAD))
12556                 goto nla_put_failure;
12557
12558         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12559         if (!func_attr)
12560                 goto nla_put_failure;
12561
12562         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID,
12563                        func->instance_id))
12564                 goto nla_put_failure;
12565
12566         nla_nest_end(msg, func_attr);
12567
12568         genlmsg_end(msg, hdr);
12569         return genlmsg_reply(msg, info);
12570
12571 nla_put_failure:
12572         nlmsg_free(msg);
12573         return -ENOBUFS;
12574 }
12575
12576 static int nl80211_nan_del_func(struct sk_buff *skb,
12577                                struct genl_info *info)
12578 {
12579         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12580         struct wireless_dev *wdev = info->user_ptr[1];
12581         u64 cookie;
12582
12583         if (wdev->iftype != NL80211_IFTYPE_NAN)
12584                 return -EOPNOTSUPP;
12585
12586         if (!wdev_running(wdev))
12587                 return -ENOTCONN;
12588
12589         if (!info->attrs[NL80211_ATTR_COOKIE])
12590                 return -EINVAL;
12591
12592         cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]);
12593
12594         rdev_del_nan_func(rdev, wdev, cookie);
12595
12596         return 0;
12597 }
12598
12599 static int nl80211_nan_change_config(struct sk_buff *skb,
12600                                      struct genl_info *info)
12601 {
12602         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12603         struct wireless_dev *wdev = info->user_ptr[1];
12604         struct cfg80211_nan_conf conf = {};
12605         u32 changed = 0;
12606
12607         if (wdev->iftype != NL80211_IFTYPE_NAN)
12608                 return -EOPNOTSUPP;
12609
12610         if (!wdev_running(wdev))
12611                 return -ENOTCONN;
12612
12613         if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) {
12614                 conf.master_pref =
12615                         nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]);
12616                 if (conf.master_pref <= 1 || conf.master_pref == 255)
12617                         return -EINVAL;
12618
12619                 changed |= CFG80211_NAN_CONF_CHANGED_PREF;
12620         }
12621
12622         if (info->attrs[NL80211_ATTR_BANDS]) {
12623                 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]);
12624
12625                 if (bands & ~(u32)wdev->wiphy->nan_supported_bands)
12626                         return -EOPNOTSUPP;
12627
12628                 if (bands && !(bands & BIT(NL80211_BAND_2GHZ)))
12629                         return -EINVAL;
12630
12631                 conf.bands = bands;
12632                 changed |= CFG80211_NAN_CONF_CHANGED_BANDS;
12633         }
12634
12635         if (!changed)
12636                 return -EINVAL;
12637
12638         return rdev_nan_change_conf(rdev, wdev, &conf, changed);
12639 }
12640
12641 void cfg80211_nan_match(struct wireless_dev *wdev,
12642                         struct cfg80211_nan_match_params *match, gfp_t gfp)
12643 {
12644         struct wiphy *wiphy = wdev->wiphy;
12645         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12646         struct nlattr *match_attr, *local_func_attr, *peer_func_attr;
12647         struct sk_buff *msg;
12648         void *hdr;
12649
12650         if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr))
12651                 return;
12652
12653         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12654         if (!msg)
12655                 return;
12656
12657         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH);
12658         if (!hdr) {
12659                 nlmsg_free(msg);
12660                 return;
12661         }
12662
12663         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12664             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12665                                          wdev->netdev->ifindex)) ||
12666             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12667                               NL80211_ATTR_PAD))
12668                 goto nla_put_failure;
12669
12670         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie,
12671                               NL80211_ATTR_PAD) ||
12672             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr))
12673                 goto nla_put_failure;
12674
12675         match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH);
12676         if (!match_attr)
12677                 goto nla_put_failure;
12678
12679         local_func_attr = nla_nest_start_noflag(msg,
12680                                                 NL80211_NAN_MATCH_FUNC_LOCAL);
12681         if (!local_func_attr)
12682                 goto nla_put_failure;
12683
12684         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id))
12685                 goto nla_put_failure;
12686
12687         nla_nest_end(msg, local_func_attr);
12688
12689         peer_func_attr = nla_nest_start_noflag(msg,
12690                                                NL80211_NAN_MATCH_FUNC_PEER);
12691         if (!peer_func_attr)
12692                 goto nla_put_failure;
12693
12694         if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) ||
12695             nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id))
12696                 goto nla_put_failure;
12697
12698         if (match->info && match->info_len &&
12699             nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len,
12700                     match->info))
12701                 goto nla_put_failure;
12702
12703         nla_nest_end(msg, peer_func_attr);
12704         nla_nest_end(msg, match_attr);
12705         genlmsg_end(msg, hdr);
12706
12707         if (!wdev->owner_nlportid)
12708                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12709                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12710         else
12711                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12712                                 wdev->owner_nlportid);
12713
12714         return;
12715
12716 nla_put_failure:
12717         nlmsg_free(msg);
12718 }
12719 EXPORT_SYMBOL(cfg80211_nan_match);
12720
12721 void cfg80211_nan_func_terminated(struct wireless_dev *wdev,
12722                                   u8 inst_id,
12723                                   enum nl80211_nan_func_term_reason reason,
12724                                   u64 cookie, gfp_t gfp)
12725 {
12726         struct wiphy *wiphy = wdev->wiphy;
12727         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
12728         struct sk_buff *msg;
12729         struct nlattr *func_attr;
12730         void *hdr;
12731
12732         if (WARN_ON(!inst_id))
12733                 return;
12734
12735         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
12736         if (!msg)
12737                 return;
12738
12739         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION);
12740         if (!hdr) {
12741                 nlmsg_free(msg);
12742                 return;
12743         }
12744
12745         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
12746             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
12747                                          wdev->netdev->ifindex)) ||
12748             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
12749                               NL80211_ATTR_PAD))
12750                 goto nla_put_failure;
12751
12752         if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
12753                               NL80211_ATTR_PAD))
12754                 goto nla_put_failure;
12755
12756         func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC);
12757         if (!func_attr)
12758                 goto nla_put_failure;
12759
12760         if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) ||
12761             nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason))
12762                 goto nla_put_failure;
12763
12764         nla_nest_end(msg, func_attr);
12765         genlmsg_end(msg, hdr);
12766
12767         if (!wdev->owner_nlportid)
12768                 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy),
12769                                         msg, 0, NL80211_MCGRP_NAN, gfp);
12770         else
12771                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
12772                                 wdev->owner_nlportid);
12773
12774         return;
12775
12776 nla_put_failure:
12777         nlmsg_free(msg);
12778 }
12779 EXPORT_SYMBOL(cfg80211_nan_func_terminated);
12780
12781 static int nl80211_get_protocol_features(struct sk_buff *skb,
12782                                          struct genl_info *info)
12783 {
12784         void *hdr;
12785         struct sk_buff *msg;
12786
12787         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
12788         if (!msg)
12789                 return -ENOMEM;
12790
12791         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
12792                              NL80211_CMD_GET_PROTOCOL_FEATURES);
12793         if (!hdr)
12794                 goto nla_put_failure;
12795
12796         if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES,
12797                         NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP))
12798                 goto nla_put_failure;
12799
12800         genlmsg_end(msg, hdr);
12801         return genlmsg_reply(msg, info);
12802
12803  nla_put_failure:
12804         kfree_skb(msg);
12805         return -ENOBUFS;
12806 }
12807
12808 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info)
12809 {
12810         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12811         struct cfg80211_update_ft_ies_params ft_params;
12812         struct net_device *dev = info->user_ptr[1];
12813
12814         if (!rdev->ops->update_ft_ies)
12815                 return -EOPNOTSUPP;
12816
12817         if (!info->attrs[NL80211_ATTR_MDID] ||
12818             !info->attrs[NL80211_ATTR_IE])
12819                 return -EINVAL;
12820
12821         memset(&ft_params, 0, sizeof(ft_params));
12822         ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]);
12823         ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
12824         ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
12825
12826         return rdev_update_ft_ies(rdev, dev, &ft_params);
12827 }
12828
12829 static int nl80211_crit_protocol_start(struct sk_buff *skb,
12830                                        struct genl_info *info)
12831 {
12832         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12833         struct wireless_dev *wdev = info->user_ptr[1];
12834         enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC;
12835         u16 duration;
12836         int ret;
12837
12838         if (!rdev->ops->crit_proto_start)
12839                 return -EOPNOTSUPP;
12840
12841         if (WARN_ON(!rdev->ops->crit_proto_stop))
12842                 return -EINVAL;
12843
12844         if (rdev->crit_proto_nlportid)
12845                 return -EBUSY;
12846
12847         /* determine protocol if provided */
12848         if (info->attrs[NL80211_ATTR_CRIT_PROT_ID])
12849                 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]);
12850
12851         if (proto >= NUM_NL80211_CRIT_PROTO)
12852                 return -EINVAL;
12853
12854         /* timeout must be provided */
12855         if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION])
12856                 return -EINVAL;
12857
12858         duration =
12859                 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]);
12860
12861         if (duration > NL80211_CRIT_PROTO_MAX_DURATION)
12862                 return -ERANGE;
12863
12864         ret = rdev_crit_proto_start(rdev, wdev, proto, duration);
12865         if (!ret)
12866                 rdev->crit_proto_nlportid = info->snd_portid;
12867
12868         return ret;
12869 }
12870
12871 static int nl80211_crit_protocol_stop(struct sk_buff *skb,
12872                                       struct genl_info *info)
12873 {
12874         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12875         struct wireless_dev *wdev = info->user_ptr[1];
12876
12877         if (!rdev->ops->crit_proto_stop)
12878                 return -EOPNOTSUPP;
12879
12880         if (rdev->crit_proto_nlportid) {
12881                 rdev->crit_proto_nlportid = 0;
12882                 rdev_crit_proto_stop(rdev, wdev);
12883         }
12884         return 0;
12885 }
12886
12887 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd,
12888                                        struct nlattr *attr,
12889                                        struct netlink_ext_ack *extack)
12890 {
12891         if (vcmd->policy == VENDOR_CMD_RAW_DATA) {
12892                 if (attr->nla_type & NLA_F_NESTED) {
12893                         NL_SET_ERR_MSG_ATTR(extack, attr,
12894                                             "unexpected nested data");
12895                         return -EINVAL;
12896                 }
12897
12898                 return 0;
12899         }
12900
12901         if (!(attr->nla_type & NLA_F_NESTED)) {
12902                 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data");
12903                 return -EINVAL;
12904         }
12905
12906         return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack);
12907 }
12908
12909 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
12910 {
12911         struct cfg80211_registered_device *rdev = info->user_ptr[0];
12912         struct wireless_dev *wdev =
12913                 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
12914         int i, err;
12915         u32 vid, subcmd;
12916
12917         if (!rdev->wiphy.vendor_commands)
12918                 return -EOPNOTSUPP;
12919
12920         if (IS_ERR(wdev)) {
12921                 err = PTR_ERR(wdev);
12922                 if (err != -EINVAL)
12923                         return err;
12924                 wdev = NULL;
12925         } else if (wdev->wiphy != &rdev->wiphy) {
12926                 return -EINVAL;
12927         }
12928
12929         if (!info->attrs[NL80211_ATTR_VENDOR_ID] ||
12930             !info->attrs[NL80211_ATTR_VENDOR_SUBCMD])
12931                 return -EINVAL;
12932
12933         vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]);
12934         subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]);
12935         for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) {
12936                 const struct wiphy_vendor_command *vcmd;
12937                 void *data = NULL;
12938                 int len = 0;
12939
12940                 vcmd = &rdev->wiphy.vendor_commands[i];
12941
12942                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
12943                         continue;
12944
12945                 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
12946                                    WIPHY_VENDOR_CMD_NEED_NETDEV)) {
12947                         if (!wdev)
12948                                 return -EINVAL;
12949                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
12950                             !wdev->netdev)
12951                                 return -EINVAL;
12952
12953                         if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
12954                                 if (!wdev_running(wdev))
12955                                         return -ENETDOWN;
12956                         }
12957
12958                         if (!vcmd->doit)
12959                                 return -EOPNOTSUPP;
12960                 } else {
12961                         wdev = NULL;
12962                 }
12963
12964                 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) {
12965                         data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12966                         len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]);
12967
12968                         err = nl80211_vendor_check_policy(vcmd,
12969                                         info->attrs[NL80211_ATTR_VENDOR_DATA],
12970                                         info->extack);
12971                         if (err)
12972                                 return err;
12973                 }
12974
12975                 rdev->cur_cmd_info = info;
12976                 err = vcmd->doit(&rdev->wiphy, wdev, data, len);
12977                 rdev->cur_cmd_info = NULL;
12978                 return err;
12979         }
12980
12981         return -EOPNOTSUPP;
12982 }
12983
12984 static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
12985                                        struct netlink_callback *cb,
12986                                        struct cfg80211_registered_device **rdev,
12987                                        struct wireless_dev **wdev)
12988 {
12989         struct nlattr **attrbuf;
12990         u32 vid, subcmd;
12991         unsigned int i;
12992         int vcmd_idx = -1;
12993         int err;
12994         void *data = NULL;
12995         unsigned int data_len = 0;
12996
12997         if (cb->args[0]) {
12998                 /* subtract the 1 again here */
12999                 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
13000                 struct wireless_dev *tmp;
13001
13002                 if (!wiphy)
13003                         return -ENODEV;
13004                 *rdev = wiphy_to_rdev(wiphy);
13005                 *wdev = NULL;
13006
13007                 if (cb->args[1]) {
13008                         list_for_each_entry(tmp, &wiphy->wdev_list, list) {
13009                                 if (tmp->identifier == cb->args[1] - 1) {
13010                                         *wdev = tmp;
13011                                         break;
13012                                 }
13013                         }
13014                 }
13015
13016                 /* keep rtnl locked in successful case */
13017                 return 0;
13018         }
13019
13020         attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL);
13021         if (!attrbuf)
13022                 return -ENOMEM;
13023
13024         err = nlmsg_parse_deprecated(cb->nlh,
13025                                      GENL_HDRLEN + nl80211_fam.hdrsize,
13026                                      attrbuf, nl80211_fam.maxattr,
13027                                      nl80211_policy, NULL);
13028         if (err)
13029                 goto out;
13030
13031         if (!attrbuf[NL80211_ATTR_VENDOR_ID] ||
13032             !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) {
13033                 err = -EINVAL;
13034                 goto out;
13035         }
13036
13037         *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
13038         if (IS_ERR(*wdev))
13039                 *wdev = NULL;
13040
13041         *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf);
13042         if (IS_ERR(*rdev)) {
13043                 err = PTR_ERR(*rdev);
13044                 goto out;
13045         }
13046
13047         vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]);
13048         subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]);
13049
13050         for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) {
13051                 const struct wiphy_vendor_command *vcmd;
13052
13053                 vcmd = &(*rdev)->wiphy.vendor_commands[i];
13054
13055                 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd)
13056                         continue;
13057
13058                 if (!vcmd->dumpit) {
13059                         err = -EOPNOTSUPP;
13060                         goto out;
13061                 }
13062
13063                 vcmd_idx = i;
13064                 break;
13065         }
13066
13067         if (vcmd_idx < 0) {
13068                 err = -EOPNOTSUPP;
13069                 goto out;
13070         }
13071
13072         if (attrbuf[NL80211_ATTR_VENDOR_DATA]) {
13073                 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13074                 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]);
13075
13076                 err = nl80211_vendor_check_policy(
13077                                 &(*rdev)->wiphy.vendor_commands[vcmd_idx],
13078                                 attrbuf[NL80211_ATTR_VENDOR_DATA],
13079                                 cb->extack);
13080                 if (err)
13081                         goto out;
13082         }
13083
13084         /* 0 is the first index - add 1 to parse only once */
13085         cb->args[0] = (*rdev)->wiphy_idx + 1;
13086         /* add 1 to know if it was NULL */
13087         cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0;
13088         cb->args[2] = vcmd_idx;
13089         cb->args[3] = (unsigned long)data;
13090         cb->args[4] = data_len;
13091
13092         /* keep rtnl locked in successful case */
13093         err = 0;
13094 out:
13095         kfree(attrbuf);
13096         return err;
13097 }
13098
13099 static int nl80211_vendor_cmd_dump(struct sk_buff *skb,
13100                                    struct netlink_callback *cb)
13101 {
13102         struct cfg80211_registered_device *rdev;
13103         struct wireless_dev *wdev;
13104         unsigned int vcmd_idx;
13105         const struct wiphy_vendor_command *vcmd;
13106         void *data;
13107         int data_len;
13108         int err;
13109         struct nlattr *vendor_data;
13110
13111         rtnl_lock();
13112         err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev);
13113         if (err)
13114                 goto out;
13115
13116         vcmd_idx = cb->args[2];
13117         data = (void *)cb->args[3];
13118         data_len = cb->args[4];
13119         vcmd = &rdev->wiphy.vendor_commands[vcmd_idx];
13120
13121         if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV |
13122                            WIPHY_VENDOR_CMD_NEED_NETDEV)) {
13123                 if (!wdev) {
13124                         err = -EINVAL;
13125                         goto out;
13126                 }
13127                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV &&
13128                     !wdev->netdev) {
13129                         err = -EINVAL;
13130                         goto out;
13131                 }
13132
13133                 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) {
13134                         if (!wdev_running(wdev)) {
13135                                 err = -ENETDOWN;
13136                                 goto out;
13137                         }
13138                 }
13139         }
13140
13141         while (1) {
13142                 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid,
13143                                            cb->nlh->nlmsg_seq, NLM_F_MULTI,
13144                                            NL80211_CMD_VENDOR);
13145                 if (!hdr)
13146                         break;
13147
13148                 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
13149                     (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV,
13150                                                wdev_id(wdev),
13151                                                NL80211_ATTR_PAD))) {
13152                         genlmsg_cancel(skb, hdr);
13153                         break;
13154                 }
13155
13156                 vendor_data = nla_nest_start_noflag(skb,
13157                                                     NL80211_ATTR_VENDOR_DATA);
13158                 if (!vendor_data) {
13159                         genlmsg_cancel(skb, hdr);
13160                         break;
13161                 }
13162
13163                 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len,
13164                                    (unsigned long *)&cb->args[5]);
13165                 nla_nest_end(skb, vendor_data);
13166
13167                 if (err == -ENOBUFS || err == -ENOENT) {
13168                         genlmsg_cancel(skb, hdr);
13169                         break;
13170                 } else if (err) {
13171                         genlmsg_cancel(skb, hdr);
13172                         goto out;
13173                 }
13174
13175                 genlmsg_end(skb, hdr);
13176         }
13177
13178         err = skb->len;
13179  out:
13180         rtnl_unlock();
13181         return err;
13182 }
13183
13184 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy,
13185                                            enum nl80211_commands cmd,
13186                                            enum nl80211_attrs attr,
13187                                            int approxlen)
13188 {
13189         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13190
13191         if (WARN_ON(!rdev->cur_cmd_info))
13192                 return NULL;
13193
13194         return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen,
13195                                            rdev->cur_cmd_info->snd_portid,
13196                                            rdev->cur_cmd_info->snd_seq,
13197                                            cmd, attr, NULL, GFP_KERNEL);
13198 }
13199 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb);
13200
13201 int cfg80211_vendor_cmd_reply(struct sk_buff *skb)
13202 {
13203         struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0];
13204         void *hdr = ((void **)skb->cb)[1];
13205         struct nlattr *data = ((void **)skb->cb)[2];
13206
13207         /* clear CB data for netlink core to own from now on */
13208         memset(skb->cb, 0, sizeof(skb->cb));
13209
13210         if (WARN_ON(!rdev->cur_cmd_info)) {
13211                 kfree_skb(skb);
13212                 return -EINVAL;
13213         }
13214
13215         nla_nest_end(skb, data);
13216         genlmsg_end(skb, hdr);
13217         return genlmsg_reply(skb, rdev->cur_cmd_info);
13218 }
13219 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply);
13220
13221 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy)
13222 {
13223         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
13224
13225         if (WARN_ON(!rdev->cur_cmd_info))
13226                 return 0;
13227
13228         return rdev->cur_cmd_info->snd_portid;
13229 }
13230 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender);
13231
13232 static int nl80211_set_qos_map(struct sk_buff *skb,
13233                                struct genl_info *info)
13234 {
13235         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13236         struct cfg80211_qos_map *qos_map = NULL;
13237         struct net_device *dev = info->user_ptr[1];
13238         u8 *pos, len, num_des, des_len, des;
13239         int ret;
13240
13241         if (!rdev->ops->set_qos_map)
13242                 return -EOPNOTSUPP;
13243
13244         if (info->attrs[NL80211_ATTR_QOS_MAP]) {
13245                 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]);
13246                 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]);
13247
13248                 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN ||
13249                     len > IEEE80211_QOS_MAP_LEN_MAX)
13250                         return -EINVAL;
13251
13252                 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL);
13253                 if (!qos_map)
13254                         return -ENOMEM;
13255
13256                 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1;
13257                 if (num_des) {
13258                         des_len = num_des *
13259                                 sizeof(struct cfg80211_dscp_exception);
13260                         memcpy(qos_map->dscp_exception, pos, des_len);
13261                         qos_map->num_des = num_des;
13262                         for (des = 0; des < num_des; des++) {
13263                                 if (qos_map->dscp_exception[des].up > 7) {
13264                                         kfree(qos_map);
13265                                         return -EINVAL;
13266                                 }
13267                         }
13268                         pos += des_len;
13269                 }
13270                 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN);
13271         }
13272
13273         wdev_lock(dev->ieee80211_ptr);
13274         ret = nl80211_key_allowed(dev->ieee80211_ptr);
13275         if (!ret)
13276                 ret = rdev_set_qos_map(rdev, dev, qos_map);
13277         wdev_unlock(dev->ieee80211_ptr);
13278
13279         kfree(qos_map);
13280         return ret;
13281 }
13282
13283 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info)
13284 {
13285         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13286         struct net_device *dev = info->user_ptr[1];
13287         struct wireless_dev *wdev = dev->ieee80211_ptr;
13288         const u8 *peer;
13289         u8 tsid, up;
13290         u16 admitted_time = 0;
13291         int err;
13292
13293         if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION))
13294                 return -EOPNOTSUPP;
13295
13296         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] ||
13297             !info->attrs[NL80211_ATTR_USER_PRIO])
13298                 return -EINVAL;
13299
13300         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13301         up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]);
13302
13303         /* WMM uses TIDs 0-7 even for TSPEC */
13304         if (tsid >= IEEE80211_FIRST_TSPEC_TSID) {
13305                 /* TODO: handle 802.11 TSPEC/admission control
13306                  * need more attributes for that (e.g. BA session requirement);
13307                  * change the WMM adminssion test above to allow both then
13308                  */
13309                 return -EINVAL;
13310         }
13311
13312         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13313
13314         if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) {
13315                 admitted_time =
13316                         nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]);
13317                 if (!admitted_time)
13318                         return -EINVAL;
13319         }
13320
13321         wdev_lock(wdev);
13322         switch (wdev->iftype) {
13323         case NL80211_IFTYPE_STATION:
13324         case NL80211_IFTYPE_P2P_CLIENT:
13325                 if (wdev->current_bss)
13326                         break;
13327                 err = -ENOTCONN;
13328                 goto out;
13329         default:
13330                 err = -EOPNOTSUPP;
13331                 goto out;
13332         }
13333
13334         err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time);
13335
13336  out:
13337         wdev_unlock(wdev);
13338         return err;
13339 }
13340
13341 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info)
13342 {
13343         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13344         struct net_device *dev = info->user_ptr[1];
13345         struct wireless_dev *wdev = dev->ieee80211_ptr;
13346         const u8 *peer;
13347         u8 tsid;
13348         int err;
13349
13350         if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC])
13351                 return -EINVAL;
13352
13353         tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]);
13354         peer = nla_data(info->attrs[NL80211_ATTR_MAC]);
13355
13356         wdev_lock(wdev);
13357         err = rdev_del_tx_ts(rdev, dev, tsid, peer);
13358         wdev_unlock(wdev);
13359
13360         return err;
13361 }
13362
13363 static int nl80211_tdls_channel_switch(struct sk_buff *skb,
13364                                        struct genl_info *info)
13365 {
13366         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13367         struct net_device *dev = info->user_ptr[1];
13368         struct wireless_dev *wdev = dev->ieee80211_ptr;
13369         struct cfg80211_chan_def chandef = {};
13370         const u8 *addr;
13371         u8 oper_class;
13372         int err;
13373
13374         if (!rdev->ops->tdls_channel_switch ||
13375             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13376                 return -EOPNOTSUPP;
13377
13378         switch (dev->ieee80211_ptr->iftype) {
13379         case NL80211_IFTYPE_STATION:
13380         case NL80211_IFTYPE_P2P_CLIENT:
13381                 break;
13382         default:
13383                 return -EOPNOTSUPP;
13384         }
13385
13386         if (!info->attrs[NL80211_ATTR_MAC] ||
13387             !info->attrs[NL80211_ATTR_OPER_CLASS])
13388                 return -EINVAL;
13389
13390         err = nl80211_parse_chandef(rdev, info, &chandef);
13391         if (err)
13392                 return err;
13393
13394         /*
13395          * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012
13396          * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the
13397          * specification is not defined for them.
13398          */
13399         if (chandef.chan->band == NL80211_BAND_2GHZ &&
13400             chandef.width != NL80211_CHAN_WIDTH_20_NOHT &&
13401             chandef.width != NL80211_CHAN_WIDTH_20)
13402                 return -EINVAL;
13403
13404         /* we will be active on the TDLS link */
13405         if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef,
13406                                            wdev->iftype))
13407                 return -EINVAL;
13408
13409         /* don't allow switching to DFS channels */
13410         if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype))
13411                 return -EINVAL;
13412
13413         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13414         oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]);
13415
13416         wdev_lock(wdev);
13417         err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef);
13418         wdev_unlock(wdev);
13419
13420         return err;
13421 }
13422
13423 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb,
13424                                               struct genl_info *info)
13425 {
13426         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13427         struct net_device *dev = info->user_ptr[1];
13428         struct wireless_dev *wdev = dev->ieee80211_ptr;
13429         const u8 *addr;
13430
13431         if (!rdev->ops->tdls_channel_switch ||
13432             !rdev->ops->tdls_cancel_channel_switch ||
13433             !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
13434                 return -EOPNOTSUPP;
13435
13436         switch (dev->ieee80211_ptr->iftype) {
13437         case NL80211_IFTYPE_STATION:
13438         case NL80211_IFTYPE_P2P_CLIENT:
13439                 break;
13440         default:
13441                 return -EOPNOTSUPP;
13442         }
13443
13444         if (!info->attrs[NL80211_ATTR_MAC])
13445                 return -EINVAL;
13446
13447         addr = nla_data(info->attrs[NL80211_ATTR_MAC]);
13448
13449         wdev_lock(wdev);
13450         rdev_tdls_cancel_channel_switch(rdev, dev, addr);
13451         wdev_unlock(wdev);
13452
13453         return 0;
13454 }
13455
13456 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb,
13457                                             struct genl_info *info)
13458 {
13459         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13460         struct net_device *dev = info->user_ptr[1];
13461         struct wireless_dev *wdev = dev->ieee80211_ptr;
13462         const struct nlattr *nla;
13463         bool enabled;
13464
13465         if (!rdev->ops->set_multicast_to_unicast)
13466                 return -EOPNOTSUPP;
13467
13468         if (wdev->iftype != NL80211_IFTYPE_AP &&
13469             wdev->iftype != NL80211_IFTYPE_P2P_GO)
13470                 return -EOPNOTSUPP;
13471
13472         nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED];
13473         enabled = nla_get_flag(nla);
13474
13475         return rdev_set_multicast_to_unicast(rdev, dev, enabled);
13476 }
13477
13478 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info)
13479 {
13480         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13481         struct net_device *dev = info->user_ptr[1];
13482         struct wireless_dev *wdev = dev->ieee80211_ptr;
13483         struct cfg80211_pmk_conf pmk_conf = {};
13484         int ret;
13485
13486         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13487             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13488                 return -EOPNOTSUPP;
13489
13490         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13491                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13492                 return -EOPNOTSUPP;
13493
13494         if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK])
13495                 return -EINVAL;
13496
13497         wdev_lock(wdev);
13498         if (!wdev->current_bss) {
13499                 ret = -ENOTCONN;
13500                 goto out;
13501         }
13502
13503         pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13504         if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) {
13505                 ret = -EINVAL;
13506                 goto out;
13507         }
13508
13509         pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]);
13510         pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]);
13511         if (pmk_conf.pmk_len != WLAN_PMK_LEN &&
13512             pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) {
13513                 ret = -EINVAL;
13514                 goto out;
13515         }
13516
13517         if (info->attrs[NL80211_ATTR_PMKR0_NAME]) {
13518                 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13519
13520                 if (r0_name_len != WLAN_PMK_NAME_LEN) {
13521                         ret = -EINVAL;
13522                         goto out;
13523                 }
13524
13525                 pmk_conf.pmk_r0_name =
13526                         nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]);
13527         }
13528
13529         ret = rdev_set_pmk(rdev, dev, &pmk_conf);
13530 out:
13531         wdev_unlock(wdev);
13532         return ret;
13533 }
13534
13535 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info)
13536 {
13537         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13538         struct net_device *dev = info->user_ptr[1];
13539         struct wireless_dev *wdev = dev->ieee80211_ptr;
13540         const u8 *aa;
13541         int ret;
13542
13543         if (wdev->iftype != NL80211_IFTYPE_STATION &&
13544             wdev->iftype != NL80211_IFTYPE_P2P_CLIENT)
13545                 return -EOPNOTSUPP;
13546
13547         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13548                                      NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X))
13549                 return -EOPNOTSUPP;
13550
13551         if (!info->attrs[NL80211_ATTR_MAC])
13552                 return -EINVAL;
13553
13554         wdev_lock(wdev);
13555         aa = nla_data(info->attrs[NL80211_ATTR_MAC]);
13556         ret = rdev_del_pmk(rdev, dev, aa);
13557         wdev_unlock(wdev);
13558
13559         return ret;
13560 }
13561
13562 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info)
13563 {
13564         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13565         struct net_device *dev = info->user_ptr[1];
13566         struct cfg80211_external_auth_params params;
13567
13568         if (!rdev->ops->external_auth)
13569                 return -EOPNOTSUPP;
13570
13571         if (!info->attrs[NL80211_ATTR_SSID] &&
13572             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
13573             dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
13574                 return -EINVAL;
13575
13576         if (!info->attrs[NL80211_ATTR_BSSID])
13577                 return -EINVAL;
13578
13579         if (!info->attrs[NL80211_ATTR_STATUS_CODE])
13580                 return -EINVAL;
13581
13582         memset(&params, 0, sizeof(params));
13583
13584         if (info->attrs[NL80211_ATTR_SSID]) {
13585                 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]);
13586                 if (params.ssid.ssid_len == 0 ||
13587                     params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN)
13588                         return -EINVAL;
13589                 memcpy(params.ssid.ssid,
13590                        nla_data(info->attrs[NL80211_ATTR_SSID]),
13591                        params.ssid.ssid_len);
13592         }
13593
13594         memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]),
13595                ETH_ALEN);
13596
13597         params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13598
13599         if (info->attrs[NL80211_ATTR_PMKID])
13600                 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]);
13601
13602         return rdev_external_auth(rdev, dev, &params);
13603 }
13604
13605 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info)
13606 {
13607         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13608         struct net_device *dev = info->user_ptr[1];
13609         struct wireless_dev *wdev = dev->ieee80211_ptr;
13610         const u8 *buf;
13611         size_t len;
13612         u8 *dest;
13613         u16 proto;
13614         bool noencrypt;
13615         int err;
13616
13617         if (!wiphy_ext_feature_isset(&rdev->wiphy,
13618                                      NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211))
13619                 return -EOPNOTSUPP;
13620
13621         if (!rdev->ops->tx_control_port)
13622                 return -EOPNOTSUPP;
13623
13624         if (!info->attrs[NL80211_ATTR_FRAME] ||
13625             !info->attrs[NL80211_ATTR_MAC] ||
13626             !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) {
13627                 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing");
13628                 return -EINVAL;
13629         }
13630
13631         wdev_lock(wdev);
13632
13633         switch (wdev->iftype) {
13634         case NL80211_IFTYPE_AP:
13635         case NL80211_IFTYPE_P2P_GO:
13636         case NL80211_IFTYPE_MESH_POINT:
13637                 break;
13638         case NL80211_IFTYPE_ADHOC:
13639         case NL80211_IFTYPE_STATION:
13640         case NL80211_IFTYPE_P2P_CLIENT:
13641                 if (wdev->current_bss)
13642                         break;
13643                 err = -ENOTCONN;
13644                 goto out;
13645         default:
13646                 err = -EOPNOTSUPP;
13647                 goto out;
13648         }
13649
13650         wdev_unlock(wdev);
13651
13652         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13653         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13654         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13655         proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]);
13656         noencrypt =
13657                 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]);
13658
13659         return rdev_tx_control_port(rdev, dev, buf, len,
13660                                     dest, cpu_to_be16(proto), noencrypt);
13661
13662  out:
13663         wdev_unlock(wdev);
13664         return err;
13665 }
13666
13667 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb,
13668                                            struct genl_info *info)
13669 {
13670         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13671         struct net_device *dev = info->user_ptr[1];
13672         struct wireless_dev *wdev = dev->ieee80211_ptr;
13673         struct cfg80211_ftm_responder_stats ftm_stats = {};
13674         struct sk_buff *msg;
13675         void *hdr;
13676         struct nlattr *ftm_stats_attr;
13677         int err;
13678
13679         if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval)
13680                 return -EOPNOTSUPP;
13681
13682         err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats);
13683         if (err)
13684                 return err;
13685
13686         if (!ftm_stats.filled)
13687                 return -ENODATA;
13688
13689         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
13690         if (!msg)
13691                 return -ENOMEM;
13692
13693         hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0,
13694                              NL80211_CMD_GET_FTM_RESPONDER_STATS);
13695         if (!hdr)
13696                 goto nla_put_failure;
13697
13698         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
13699                 goto nla_put_failure;
13700
13701         ftm_stats_attr = nla_nest_start_noflag(msg,
13702                                                NL80211_ATTR_FTM_RESPONDER_STATS);
13703         if (!ftm_stats_attr)
13704                 goto nla_put_failure;
13705
13706 #define SET_FTM(field, name, type)                                       \
13707         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13708             nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name,            \
13709                              ftm_stats.field))                           \
13710                 goto nla_put_failure; } while (0)
13711 #define SET_FTM_U64(field, name)                                         \
13712         do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \
13713             nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name,           \
13714                               ftm_stats.field, NL80211_FTM_STATS_PAD))   \
13715                 goto nla_put_failure; } while (0)
13716
13717         SET_FTM(success_num, SUCCESS_NUM, u32);
13718         SET_FTM(partial_num, PARTIAL_NUM, u32);
13719         SET_FTM(failed_num, FAILED_NUM, u32);
13720         SET_FTM(asap_num, ASAP_NUM, u32);
13721         SET_FTM(non_asap_num, NON_ASAP_NUM, u32);
13722         SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC);
13723         SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32);
13724         SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32);
13725         SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32);
13726 #undef SET_FTM
13727
13728         nla_nest_end(msg, ftm_stats_attr);
13729
13730         genlmsg_end(msg, hdr);
13731         return genlmsg_reply(msg, info);
13732
13733 nla_put_failure:
13734         nlmsg_free(msg);
13735         return -ENOBUFS;
13736 }
13737
13738 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info)
13739 {
13740         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13741         struct cfg80211_update_owe_info owe_info;
13742         struct net_device *dev = info->user_ptr[1];
13743
13744         if (!rdev->ops->update_owe_info)
13745                 return -EOPNOTSUPP;
13746
13747         if (!info->attrs[NL80211_ATTR_STATUS_CODE] ||
13748             !info->attrs[NL80211_ATTR_MAC])
13749                 return -EINVAL;
13750
13751         memset(&owe_info, 0, sizeof(owe_info));
13752         owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]);
13753         nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN);
13754
13755         if (info->attrs[NL80211_ATTR_IE]) {
13756                 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]);
13757                 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]);
13758         }
13759
13760         return rdev_update_owe_info(rdev, dev, &owe_info);
13761 }
13762
13763 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info)
13764 {
13765         struct cfg80211_registered_device *rdev = info->user_ptr[0];
13766         struct net_device *dev = info->user_ptr[1];
13767         struct wireless_dev *wdev = dev->ieee80211_ptr;
13768         struct station_info sinfo = {};
13769         const u8 *buf;
13770         size_t len;
13771         u8 *dest;
13772         int err;
13773
13774         if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station)
13775                 return -EOPNOTSUPP;
13776
13777         if (!info->attrs[NL80211_ATTR_MAC] ||
13778             !info->attrs[NL80211_ATTR_FRAME]) {
13779                 GENL_SET_ERR_MSG(info, "Frame or MAC missing");
13780                 return -EINVAL;
13781         }
13782
13783         if (wdev->iftype != NL80211_IFTYPE_MESH_POINT)
13784                 return -EOPNOTSUPP;
13785
13786         dest = nla_data(info->attrs[NL80211_ATTR_MAC]);
13787         buf = nla_data(info->attrs[NL80211_ATTR_FRAME]);
13788         len = nla_len(info->attrs[NL80211_ATTR_FRAME]);
13789
13790         if (len < sizeof(struct ethhdr))
13791                 return -EINVAL;
13792
13793         if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) ||
13794             !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr))
13795                 return -EINVAL;
13796
13797         err = rdev_get_station(rdev, dev, dest, &sinfo);
13798         if (err)
13799                 return err;
13800
13801         cfg80211_sinfo_release_content(&sinfo);
13802
13803         return rdev_probe_mesh_link(rdev, dev, dest, buf, len);
13804 }
13805
13806 #define NL80211_FLAG_NEED_WIPHY         0x01
13807 #define NL80211_FLAG_NEED_NETDEV        0x02
13808 #define NL80211_FLAG_NEED_RTNL          0x04
13809 #define NL80211_FLAG_CHECK_NETDEV_UP    0x08
13810 #define NL80211_FLAG_NEED_NETDEV_UP     (NL80211_FLAG_NEED_NETDEV |\
13811                                          NL80211_FLAG_CHECK_NETDEV_UP)
13812 #define NL80211_FLAG_NEED_WDEV          0x10
13813 /* If a netdev is associated, it must be UP, P2P must be started */
13814 #define NL80211_FLAG_NEED_WDEV_UP       (NL80211_FLAG_NEED_WDEV |\
13815                                          NL80211_FLAG_CHECK_NETDEV_UP)
13816 #define NL80211_FLAG_CLEAR_SKB          0x20
13817
13818 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
13819                             struct genl_info *info)
13820 {
13821         struct cfg80211_registered_device *rdev;
13822         struct wireless_dev *wdev;
13823         struct net_device *dev;
13824         bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
13825
13826         if (rtnl)
13827                 rtnl_lock();
13828
13829         if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
13830                 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
13831                 if (IS_ERR(rdev)) {
13832                         if (rtnl)
13833                                 rtnl_unlock();
13834                         return PTR_ERR(rdev);
13835                 }
13836                 info->user_ptr[0] = rdev;
13837         } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
13838                    ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13839                 ASSERT_RTNL();
13840
13841                 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
13842                                                   info->attrs);
13843                 if (IS_ERR(wdev)) {
13844                         if (rtnl)
13845                                 rtnl_unlock();
13846                         return PTR_ERR(wdev);
13847                 }
13848
13849                 dev = wdev->netdev;
13850                 rdev = wiphy_to_rdev(wdev->wiphy);
13851
13852                 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
13853                         if (!dev) {
13854                                 if (rtnl)
13855                                         rtnl_unlock();
13856                                 return -EINVAL;
13857                         }
13858
13859                         info->user_ptr[1] = dev;
13860                 } else {
13861                         info->user_ptr[1] = wdev;
13862                 }
13863
13864                 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
13865                     !wdev_running(wdev)) {
13866                         if (rtnl)
13867                                 rtnl_unlock();
13868                         return -ENETDOWN;
13869                 }
13870
13871                 if (dev)
13872                         dev_hold(dev);
13873
13874                 info->user_ptr[0] = rdev;
13875         }
13876
13877         return 0;
13878 }
13879
13880 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
13881                               struct genl_info *info)
13882 {
13883         if (info->user_ptr[1]) {
13884                 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
13885                         struct wireless_dev *wdev = info->user_ptr[1];
13886
13887                         if (wdev->netdev)
13888                                 dev_put(wdev->netdev);
13889                 } else {
13890                         dev_put(info->user_ptr[1]);
13891                 }
13892         }
13893
13894         if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
13895                 rtnl_unlock();
13896
13897         /* If needed, clear the netlink message payload from the SKB
13898          * as it might contain key data that shouldn't stick around on
13899          * the heap after the SKB is freed. The netlink message header
13900          * is still needed for further processing, so leave it intact.
13901          */
13902         if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) {
13903                 struct nlmsghdr *nlh = nlmsg_hdr(skb);
13904
13905                 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh));
13906         }
13907 }
13908
13909 static const struct genl_ops nl80211_ops[] = {
13910         {
13911                 .cmd = NL80211_CMD_GET_WIPHY,
13912                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13913                 .doit = nl80211_get_wiphy,
13914                 .dumpit = nl80211_dump_wiphy,
13915                 .done = nl80211_dump_wiphy_done,
13916                 /* can be retrieved by unprivileged users */
13917                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13918                                   NL80211_FLAG_NEED_RTNL,
13919         },
13920         {
13921                 .cmd = NL80211_CMD_SET_WIPHY,
13922                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13923                 .doit = nl80211_set_wiphy,
13924                 .flags = GENL_UNS_ADMIN_PERM,
13925                 .internal_flags = NL80211_FLAG_NEED_RTNL,
13926         },
13927         {
13928                 .cmd = NL80211_CMD_GET_INTERFACE,
13929                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13930                 .doit = nl80211_get_interface,
13931                 .dumpit = nl80211_dump_interface,
13932                 /* can be retrieved by unprivileged users */
13933                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13934                                   NL80211_FLAG_NEED_RTNL,
13935         },
13936         {
13937                 .cmd = NL80211_CMD_SET_INTERFACE,
13938                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13939                 .doit = nl80211_set_interface,
13940                 .flags = GENL_UNS_ADMIN_PERM,
13941                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
13942                                   NL80211_FLAG_NEED_RTNL,
13943         },
13944         {
13945                 .cmd = NL80211_CMD_NEW_INTERFACE,
13946                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13947                 .doit = nl80211_new_interface,
13948                 .flags = GENL_UNS_ADMIN_PERM,
13949                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
13950                                   NL80211_FLAG_NEED_RTNL,
13951         },
13952         {
13953                 .cmd = NL80211_CMD_DEL_INTERFACE,
13954                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13955                 .doit = nl80211_del_interface,
13956                 .flags = GENL_UNS_ADMIN_PERM,
13957                 .internal_flags = NL80211_FLAG_NEED_WDEV |
13958                                   NL80211_FLAG_NEED_RTNL,
13959         },
13960         {
13961                 .cmd = NL80211_CMD_GET_KEY,
13962                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13963                 .doit = nl80211_get_key,
13964                 .flags = GENL_UNS_ADMIN_PERM,
13965                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13966                                   NL80211_FLAG_NEED_RTNL,
13967         },
13968         {
13969                 .cmd = NL80211_CMD_SET_KEY,
13970                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13971                 .doit = nl80211_set_key,
13972                 .flags = GENL_UNS_ADMIN_PERM,
13973                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13974                                   NL80211_FLAG_NEED_RTNL |
13975                                   NL80211_FLAG_CLEAR_SKB,
13976         },
13977         {
13978                 .cmd = NL80211_CMD_NEW_KEY,
13979                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13980                 .doit = nl80211_new_key,
13981                 .flags = GENL_UNS_ADMIN_PERM,
13982                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13983                                   NL80211_FLAG_NEED_RTNL |
13984                                   NL80211_FLAG_CLEAR_SKB,
13985         },
13986         {
13987                 .cmd = NL80211_CMD_DEL_KEY,
13988                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13989                 .doit = nl80211_del_key,
13990                 .flags = GENL_UNS_ADMIN_PERM,
13991                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
13992                                   NL80211_FLAG_NEED_RTNL,
13993         },
13994         {
13995                 .cmd = NL80211_CMD_SET_BEACON,
13996                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
13997                 .flags = GENL_UNS_ADMIN_PERM,
13998                 .doit = nl80211_set_beacon,
13999                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14000                                   NL80211_FLAG_NEED_RTNL,
14001         },
14002         {
14003                 .cmd = NL80211_CMD_START_AP,
14004                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14005                 .flags = GENL_UNS_ADMIN_PERM,
14006                 .doit = nl80211_start_ap,
14007                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14008                                   NL80211_FLAG_NEED_RTNL,
14009         },
14010         {
14011                 .cmd = NL80211_CMD_STOP_AP,
14012                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14013                 .flags = GENL_UNS_ADMIN_PERM,
14014                 .doit = nl80211_stop_ap,
14015                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14016                                   NL80211_FLAG_NEED_RTNL,
14017         },
14018         {
14019                 .cmd = NL80211_CMD_GET_STATION,
14020                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14021                 .doit = nl80211_get_station,
14022                 .dumpit = nl80211_dump_station,
14023                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14024                                   NL80211_FLAG_NEED_RTNL,
14025         },
14026         {
14027                 .cmd = NL80211_CMD_SET_STATION,
14028                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14029                 .doit = nl80211_set_station,
14030                 .flags = GENL_UNS_ADMIN_PERM,
14031                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14032                                   NL80211_FLAG_NEED_RTNL,
14033         },
14034         {
14035                 .cmd = NL80211_CMD_NEW_STATION,
14036                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14037                 .doit = nl80211_new_station,
14038                 .flags = GENL_UNS_ADMIN_PERM,
14039                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14040                                   NL80211_FLAG_NEED_RTNL,
14041         },
14042         {
14043                 .cmd = NL80211_CMD_DEL_STATION,
14044                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14045                 .doit = nl80211_del_station,
14046                 .flags = GENL_UNS_ADMIN_PERM,
14047                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14048                                   NL80211_FLAG_NEED_RTNL,
14049         },
14050         {
14051                 .cmd = NL80211_CMD_GET_MPATH,
14052                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14053                 .doit = nl80211_get_mpath,
14054                 .dumpit = nl80211_dump_mpath,
14055                 .flags = GENL_UNS_ADMIN_PERM,
14056                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14057                                   NL80211_FLAG_NEED_RTNL,
14058         },
14059         {
14060                 .cmd = NL80211_CMD_GET_MPP,
14061                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14062                 .doit = nl80211_get_mpp,
14063                 .dumpit = nl80211_dump_mpp,
14064                 .flags = GENL_UNS_ADMIN_PERM,
14065                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14066                                   NL80211_FLAG_NEED_RTNL,
14067         },
14068         {
14069                 .cmd = NL80211_CMD_SET_MPATH,
14070                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14071                 .doit = nl80211_set_mpath,
14072                 .flags = GENL_UNS_ADMIN_PERM,
14073                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14074                                   NL80211_FLAG_NEED_RTNL,
14075         },
14076         {
14077                 .cmd = NL80211_CMD_NEW_MPATH,
14078                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14079                 .doit = nl80211_new_mpath,
14080                 .flags = GENL_UNS_ADMIN_PERM,
14081                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14082                                   NL80211_FLAG_NEED_RTNL,
14083         },
14084         {
14085                 .cmd = NL80211_CMD_DEL_MPATH,
14086                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14087                 .doit = nl80211_del_mpath,
14088                 .flags = GENL_UNS_ADMIN_PERM,
14089                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14090                                   NL80211_FLAG_NEED_RTNL,
14091         },
14092         {
14093                 .cmd = NL80211_CMD_SET_BSS,
14094                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14095                 .doit = nl80211_set_bss,
14096                 .flags = GENL_UNS_ADMIN_PERM,
14097                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14098                                   NL80211_FLAG_NEED_RTNL,
14099         },
14100         {
14101                 .cmd = NL80211_CMD_GET_REG,
14102                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14103                 .doit = nl80211_get_reg_do,
14104                 .dumpit = nl80211_get_reg_dump,
14105                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14106                 /* can be retrieved by unprivileged users */
14107         },
14108 #ifdef CONFIG_CFG80211_CRDA_SUPPORT
14109         {
14110                 .cmd = NL80211_CMD_SET_REG,
14111                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14112                 .doit = nl80211_set_reg,
14113                 .flags = GENL_ADMIN_PERM,
14114                 .internal_flags = NL80211_FLAG_NEED_RTNL,
14115         },
14116 #endif
14117         {
14118                 .cmd = NL80211_CMD_REQ_SET_REG,
14119                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14120                 .doit = nl80211_req_set_reg,
14121                 .flags = GENL_ADMIN_PERM,
14122         },
14123         {
14124                 .cmd = NL80211_CMD_RELOAD_REGDB,
14125                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14126                 .doit = nl80211_reload_regdb,
14127                 .flags = GENL_ADMIN_PERM,
14128         },
14129         {
14130                 .cmd = NL80211_CMD_GET_MESH_CONFIG,
14131                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14132                 .doit = nl80211_get_mesh_config,
14133                 /* can be retrieved by unprivileged users */
14134                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14135                                   NL80211_FLAG_NEED_RTNL,
14136         },
14137         {
14138                 .cmd = NL80211_CMD_SET_MESH_CONFIG,
14139                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14140                 .doit = nl80211_update_mesh_config,
14141                 .flags = GENL_UNS_ADMIN_PERM,
14142                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14143                                   NL80211_FLAG_NEED_RTNL,
14144         },
14145         {
14146                 .cmd = NL80211_CMD_TRIGGER_SCAN,
14147                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14148                 .doit = nl80211_trigger_scan,
14149                 .flags = GENL_UNS_ADMIN_PERM,
14150                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14151                                   NL80211_FLAG_NEED_RTNL,
14152         },
14153         {
14154                 .cmd = NL80211_CMD_ABORT_SCAN,
14155                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14156                 .doit = nl80211_abort_scan,
14157                 .flags = GENL_UNS_ADMIN_PERM,
14158                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14159                                   NL80211_FLAG_NEED_RTNL,
14160         },
14161         {
14162                 .cmd = NL80211_CMD_GET_SCAN,
14163                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14164                 .dumpit = nl80211_dump_scan,
14165         },
14166         {
14167                 .cmd = NL80211_CMD_START_SCHED_SCAN,
14168                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14169                 .doit = nl80211_start_sched_scan,
14170                 .flags = GENL_UNS_ADMIN_PERM,
14171                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14172                                   NL80211_FLAG_NEED_RTNL,
14173         },
14174         {
14175                 .cmd = NL80211_CMD_STOP_SCHED_SCAN,
14176                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14177                 .doit = nl80211_stop_sched_scan,
14178                 .flags = GENL_UNS_ADMIN_PERM,
14179                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14180                                   NL80211_FLAG_NEED_RTNL,
14181         },
14182         {
14183                 .cmd = NL80211_CMD_AUTHENTICATE,
14184                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14185                 .doit = nl80211_authenticate,
14186                 .flags = GENL_UNS_ADMIN_PERM,
14187                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14188                                   NL80211_FLAG_NEED_RTNL |
14189                                   NL80211_FLAG_CLEAR_SKB,
14190         },
14191         {
14192                 .cmd = NL80211_CMD_ASSOCIATE,
14193                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14194                 .doit = nl80211_associate,
14195                 .flags = GENL_UNS_ADMIN_PERM,
14196                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14197                                   NL80211_FLAG_NEED_RTNL |
14198                                   NL80211_FLAG_CLEAR_SKB,
14199         },
14200         {
14201                 .cmd = NL80211_CMD_DEAUTHENTICATE,
14202                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14203                 .doit = nl80211_deauthenticate,
14204                 .flags = GENL_UNS_ADMIN_PERM,
14205                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14206                                   NL80211_FLAG_NEED_RTNL,
14207         },
14208         {
14209                 .cmd = NL80211_CMD_DISASSOCIATE,
14210                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14211                 .doit = nl80211_disassociate,
14212                 .flags = GENL_UNS_ADMIN_PERM,
14213                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14214                                   NL80211_FLAG_NEED_RTNL,
14215         },
14216         {
14217                 .cmd = NL80211_CMD_JOIN_IBSS,
14218                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14219                 .doit = nl80211_join_ibss,
14220                 .flags = GENL_UNS_ADMIN_PERM,
14221                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14222                                   NL80211_FLAG_NEED_RTNL,
14223         },
14224         {
14225                 .cmd = NL80211_CMD_LEAVE_IBSS,
14226                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14227                 .doit = nl80211_leave_ibss,
14228                 .flags = GENL_UNS_ADMIN_PERM,
14229                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14230                                   NL80211_FLAG_NEED_RTNL,
14231         },
14232 #ifdef CONFIG_NL80211_TESTMODE
14233         {
14234                 .cmd = NL80211_CMD_TESTMODE,
14235                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14236                 .doit = nl80211_testmode_do,
14237                 .dumpit = nl80211_testmode_dump,
14238                 .flags = GENL_UNS_ADMIN_PERM,
14239                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14240                                   NL80211_FLAG_NEED_RTNL,
14241         },
14242 #endif
14243         {
14244                 .cmd = NL80211_CMD_CONNECT,
14245                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14246                 .doit = nl80211_connect,
14247                 .flags = GENL_UNS_ADMIN_PERM,
14248                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14249                                   NL80211_FLAG_NEED_RTNL |
14250                                   NL80211_FLAG_CLEAR_SKB,
14251         },
14252         {
14253                 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS,
14254                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14255                 .doit = nl80211_update_connect_params,
14256                 .flags = GENL_ADMIN_PERM,
14257                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14258                                   NL80211_FLAG_NEED_RTNL |
14259                                   NL80211_FLAG_CLEAR_SKB,
14260         },
14261         {
14262                 .cmd = NL80211_CMD_DISCONNECT,
14263                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14264                 .doit = nl80211_disconnect,
14265                 .flags = GENL_UNS_ADMIN_PERM,
14266                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14267                                   NL80211_FLAG_NEED_RTNL,
14268         },
14269         {
14270                 .cmd = NL80211_CMD_SET_WIPHY_NETNS,
14271                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14272                 .doit = nl80211_wiphy_netns,
14273                 .flags = GENL_UNS_ADMIN_PERM,
14274                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14275                                   NL80211_FLAG_NEED_RTNL,
14276         },
14277         {
14278                 .cmd = NL80211_CMD_GET_SURVEY,
14279                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14280                 .dumpit = nl80211_dump_survey,
14281         },
14282         {
14283                 .cmd = NL80211_CMD_SET_PMKSA,
14284                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14285                 .doit = nl80211_setdel_pmksa,
14286                 .flags = GENL_UNS_ADMIN_PERM,
14287                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14288                                   NL80211_FLAG_NEED_RTNL |
14289                                   NL80211_FLAG_CLEAR_SKB,
14290         },
14291         {
14292                 .cmd = NL80211_CMD_DEL_PMKSA,
14293                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14294                 .doit = nl80211_setdel_pmksa,
14295                 .flags = GENL_UNS_ADMIN_PERM,
14296                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14297                                   NL80211_FLAG_NEED_RTNL,
14298         },
14299         {
14300                 .cmd = NL80211_CMD_FLUSH_PMKSA,
14301                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14302                 .doit = nl80211_flush_pmksa,
14303                 .flags = GENL_UNS_ADMIN_PERM,
14304                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14305                                   NL80211_FLAG_NEED_RTNL,
14306         },
14307         {
14308                 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
14309                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14310                 .doit = nl80211_remain_on_channel,
14311                 .flags = GENL_UNS_ADMIN_PERM,
14312                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14313                                   NL80211_FLAG_NEED_RTNL,
14314         },
14315         {
14316                 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
14317                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14318                 .doit = nl80211_cancel_remain_on_channel,
14319                 .flags = GENL_UNS_ADMIN_PERM,
14320                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14321                                   NL80211_FLAG_NEED_RTNL,
14322         },
14323         {
14324                 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
14325                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14326                 .doit = nl80211_set_tx_bitrate_mask,
14327                 .flags = GENL_UNS_ADMIN_PERM,
14328                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14329                                   NL80211_FLAG_NEED_RTNL,
14330         },
14331         {
14332                 .cmd = NL80211_CMD_REGISTER_FRAME,
14333                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14334                 .doit = nl80211_register_mgmt,
14335                 .flags = GENL_UNS_ADMIN_PERM,
14336                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14337                                   NL80211_FLAG_NEED_RTNL,
14338         },
14339         {
14340                 .cmd = NL80211_CMD_FRAME,
14341                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14342                 .doit = nl80211_tx_mgmt,
14343                 .flags = GENL_UNS_ADMIN_PERM,
14344                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14345                                   NL80211_FLAG_NEED_RTNL,
14346         },
14347         {
14348                 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
14349                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14350                 .doit = nl80211_tx_mgmt_cancel_wait,
14351                 .flags = GENL_UNS_ADMIN_PERM,
14352                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14353                                   NL80211_FLAG_NEED_RTNL,
14354         },
14355         {
14356                 .cmd = NL80211_CMD_SET_POWER_SAVE,
14357                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14358                 .doit = nl80211_set_power_save,
14359                 .flags = GENL_UNS_ADMIN_PERM,
14360                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14361                                   NL80211_FLAG_NEED_RTNL,
14362         },
14363         {
14364                 .cmd = NL80211_CMD_GET_POWER_SAVE,
14365                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14366                 .doit = nl80211_get_power_save,
14367                 /* can be retrieved by unprivileged users */
14368                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14369                                   NL80211_FLAG_NEED_RTNL,
14370         },
14371         {
14372                 .cmd = NL80211_CMD_SET_CQM,
14373                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14374                 .doit = nl80211_set_cqm,
14375                 .flags = GENL_UNS_ADMIN_PERM,
14376                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14377                                   NL80211_FLAG_NEED_RTNL,
14378         },
14379         {
14380                 .cmd = NL80211_CMD_SET_CHANNEL,
14381                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14382                 .doit = nl80211_set_channel,
14383                 .flags = GENL_UNS_ADMIN_PERM,
14384                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14385                                   NL80211_FLAG_NEED_RTNL,
14386         },
14387         {
14388                 .cmd = NL80211_CMD_SET_WDS_PEER,
14389                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14390                 .doit = nl80211_set_wds_peer,
14391                 .flags = GENL_UNS_ADMIN_PERM,
14392                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14393                                   NL80211_FLAG_NEED_RTNL,
14394         },
14395         {
14396                 .cmd = NL80211_CMD_JOIN_MESH,
14397                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14398                 .doit = nl80211_join_mesh,
14399                 .flags = GENL_UNS_ADMIN_PERM,
14400                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14401                                   NL80211_FLAG_NEED_RTNL,
14402         },
14403         {
14404                 .cmd = NL80211_CMD_LEAVE_MESH,
14405                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14406                 .doit = nl80211_leave_mesh,
14407                 .flags = GENL_UNS_ADMIN_PERM,
14408                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14409                                   NL80211_FLAG_NEED_RTNL,
14410         },
14411         {
14412                 .cmd = NL80211_CMD_JOIN_OCB,
14413                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14414                 .doit = nl80211_join_ocb,
14415                 .flags = GENL_UNS_ADMIN_PERM,
14416                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14417                                   NL80211_FLAG_NEED_RTNL,
14418         },
14419         {
14420                 .cmd = NL80211_CMD_LEAVE_OCB,
14421                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14422                 .doit = nl80211_leave_ocb,
14423                 .flags = GENL_UNS_ADMIN_PERM,
14424                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14425                                   NL80211_FLAG_NEED_RTNL,
14426         },
14427 #ifdef CONFIG_PM
14428         {
14429                 .cmd = NL80211_CMD_GET_WOWLAN,
14430                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14431                 .doit = nl80211_get_wowlan,
14432                 /* can be retrieved by unprivileged users */
14433                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14434                                   NL80211_FLAG_NEED_RTNL,
14435         },
14436         {
14437                 .cmd = NL80211_CMD_SET_WOWLAN,
14438                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14439                 .doit = nl80211_set_wowlan,
14440                 .flags = GENL_UNS_ADMIN_PERM,
14441                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14442                                   NL80211_FLAG_NEED_RTNL,
14443         },
14444 #endif
14445         {
14446                 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD,
14447                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14448                 .doit = nl80211_set_rekey_data,
14449                 .flags = GENL_UNS_ADMIN_PERM,
14450                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14451                                   NL80211_FLAG_NEED_RTNL |
14452                                   NL80211_FLAG_CLEAR_SKB,
14453         },
14454         {
14455                 .cmd = NL80211_CMD_TDLS_MGMT,
14456                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14457                 .doit = nl80211_tdls_mgmt,
14458                 .flags = GENL_UNS_ADMIN_PERM,
14459                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14460                                   NL80211_FLAG_NEED_RTNL,
14461         },
14462         {
14463                 .cmd = NL80211_CMD_TDLS_OPER,
14464                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14465                 .doit = nl80211_tdls_oper,
14466                 .flags = GENL_UNS_ADMIN_PERM,
14467                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14468                                   NL80211_FLAG_NEED_RTNL,
14469         },
14470         {
14471                 .cmd = NL80211_CMD_UNEXPECTED_FRAME,
14472                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14473                 .doit = nl80211_register_unexpected_frame,
14474                 .flags = GENL_UNS_ADMIN_PERM,
14475                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14476                                   NL80211_FLAG_NEED_RTNL,
14477         },
14478         {
14479                 .cmd = NL80211_CMD_PROBE_CLIENT,
14480                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14481                 .doit = nl80211_probe_client,
14482                 .flags = GENL_UNS_ADMIN_PERM,
14483                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14484                                   NL80211_FLAG_NEED_RTNL,
14485         },
14486         {
14487                 .cmd = NL80211_CMD_REGISTER_BEACONS,
14488                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14489                 .doit = nl80211_register_beacons,
14490                 .flags = GENL_UNS_ADMIN_PERM,
14491                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14492                                   NL80211_FLAG_NEED_RTNL,
14493         },
14494         {
14495                 .cmd = NL80211_CMD_SET_NOACK_MAP,
14496                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14497                 .doit = nl80211_set_noack_map,
14498                 .flags = GENL_UNS_ADMIN_PERM,
14499                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14500                                   NL80211_FLAG_NEED_RTNL,
14501         },
14502         {
14503                 .cmd = NL80211_CMD_START_P2P_DEVICE,
14504                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14505                 .doit = nl80211_start_p2p_device,
14506                 .flags = GENL_UNS_ADMIN_PERM,
14507                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14508                                   NL80211_FLAG_NEED_RTNL,
14509         },
14510         {
14511                 .cmd = NL80211_CMD_STOP_P2P_DEVICE,
14512                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14513                 .doit = nl80211_stop_p2p_device,
14514                 .flags = GENL_UNS_ADMIN_PERM,
14515                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14516                                   NL80211_FLAG_NEED_RTNL,
14517         },
14518         {
14519                 .cmd = NL80211_CMD_START_NAN,
14520                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14521                 .doit = nl80211_start_nan,
14522                 .flags = GENL_ADMIN_PERM,
14523                 .internal_flags = NL80211_FLAG_NEED_WDEV |
14524                                   NL80211_FLAG_NEED_RTNL,
14525         },
14526         {
14527                 .cmd = NL80211_CMD_STOP_NAN,
14528                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14529                 .doit = nl80211_stop_nan,
14530                 .flags = GENL_ADMIN_PERM,
14531                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14532                                   NL80211_FLAG_NEED_RTNL,
14533         },
14534         {
14535                 .cmd = NL80211_CMD_ADD_NAN_FUNCTION,
14536                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14537                 .doit = nl80211_nan_add_func,
14538                 .flags = GENL_ADMIN_PERM,
14539                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14540                                   NL80211_FLAG_NEED_RTNL,
14541         },
14542         {
14543                 .cmd = NL80211_CMD_DEL_NAN_FUNCTION,
14544                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14545                 .doit = nl80211_nan_del_func,
14546                 .flags = GENL_ADMIN_PERM,
14547                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14548                                   NL80211_FLAG_NEED_RTNL,
14549         },
14550         {
14551                 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
14552                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14553                 .doit = nl80211_nan_change_config,
14554                 .flags = GENL_ADMIN_PERM,
14555                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14556                                   NL80211_FLAG_NEED_RTNL,
14557         },
14558         {
14559                 .cmd = NL80211_CMD_SET_MCAST_RATE,
14560                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14561                 .doit = nl80211_set_mcast_rate,
14562                 .flags = GENL_UNS_ADMIN_PERM,
14563                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14564                                   NL80211_FLAG_NEED_RTNL,
14565         },
14566         {
14567                 .cmd = NL80211_CMD_SET_MAC_ACL,
14568                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14569                 .doit = nl80211_set_mac_acl,
14570                 .flags = GENL_UNS_ADMIN_PERM,
14571                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14572                                   NL80211_FLAG_NEED_RTNL,
14573         },
14574         {
14575                 .cmd = NL80211_CMD_RADAR_DETECT,
14576                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14577                 .doit = nl80211_start_radar_detection,
14578                 .flags = GENL_UNS_ADMIN_PERM,
14579                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14580                                   NL80211_FLAG_NEED_RTNL,
14581         },
14582         {
14583                 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
14584                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14585                 .doit = nl80211_get_protocol_features,
14586         },
14587         {
14588                 .cmd = NL80211_CMD_UPDATE_FT_IES,
14589                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14590                 .doit = nl80211_update_ft_ies,
14591                 .flags = GENL_UNS_ADMIN_PERM,
14592                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14593                                   NL80211_FLAG_NEED_RTNL,
14594         },
14595         {
14596                 .cmd = NL80211_CMD_CRIT_PROTOCOL_START,
14597                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14598                 .doit = nl80211_crit_protocol_start,
14599                 .flags = GENL_UNS_ADMIN_PERM,
14600                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14601                                   NL80211_FLAG_NEED_RTNL,
14602         },
14603         {
14604                 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
14605                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14606                 .doit = nl80211_crit_protocol_stop,
14607                 .flags = GENL_UNS_ADMIN_PERM,
14608                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14609                                   NL80211_FLAG_NEED_RTNL,
14610         },
14611         {
14612                 .cmd = NL80211_CMD_GET_COALESCE,
14613                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14614                 .doit = nl80211_get_coalesce,
14615                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14616                                   NL80211_FLAG_NEED_RTNL,
14617         },
14618         {
14619                 .cmd = NL80211_CMD_SET_COALESCE,
14620                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14621                 .doit = nl80211_set_coalesce,
14622                 .flags = GENL_UNS_ADMIN_PERM,
14623                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14624                                   NL80211_FLAG_NEED_RTNL,
14625         },
14626         {
14627                 .cmd = NL80211_CMD_CHANNEL_SWITCH,
14628                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14629                 .doit = nl80211_channel_switch,
14630                 .flags = GENL_UNS_ADMIN_PERM,
14631                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14632                                   NL80211_FLAG_NEED_RTNL,
14633         },
14634         {
14635                 .cmd = NL80211_CMD_VENDOR,
14636                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14637                 .doit = nl80211_vendor_cmd,
14638                 .dumpit = nl80211_vendor_cmd_dump,
14639                 .flags = GENL_UNS_ADMIN_PERM,
14640                 .internal_flags = NL80211_FLAG_NEED_WIPHY |
14641                                   NL80211_FLAG_NEED_RTNL |
14642                                   NL80211_FLAG_CLEAR_SKB,
14643         },
14644         {
14645                 .cmd = NL80211_CMD_SET_QOS_MAP,
14646                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14647                 .doit = nl80211_set_qos_map,
14648                 .flags = GENL_UNS_ADMIN_PERM,
14649                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14650                                   NL80211_FLAG_NEED_RTNL,
14651         },
14652         {
14653                 .cmd = NL80211_CMD_ADD_TX_TS,
14654                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14655                 .doit = nl80211_add_tx_ts,
14656                 .flags = GENL_UNS_ADMIN_PERM,
14657                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14658                                   NL80211_FLAG_NEED_RTNL,
14659         },
14660         {
14661                 .cmd = NL80211_CMD_DEL_TX_TS,
14662                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14663                 .doit = nl80211_del_tx_ts,
14664                 .flags = GENL_UNS_ADMIN_PERM,
14665                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14666                                   NL80211_FLAG_NEED_RTNL,
14667         },
14668         {
14669                 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
14670                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14671                 .doit = nl80211_tdls_channel_switch,
14672                 .flags = GENL_UNS_ADMIN_PERM,
14673                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14674                                   NL80211_FLAG_NEED_RTNL,
14675         },
14676         {
14677                 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
14678                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14679                 .doit = nl80211_tdls_cancel_channel_switch,
14680                 .flags = GENL_UNS_ADMIN_PERM,
14681                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14682                                   NL80211_FLAG_NEED_RTNL,
14683         },
14684         {
14685                 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
14686                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14687                 .doit = nl80211_set_multicast_to_unicast,
14688                 .flags = GENL_UNS_ADMIN_PERM,
14689                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14690                                   NL80211_FLAG_NEED_RTNL,
14691         },
14692         {
14693                 .cmd = NL80211_CMD_SET_PMK,
14694                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14695                 .doit = nl80211_set_pmk,
14696                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14697                                   NL80211_FLAG_NEED_RTNL |
14698                                   NL80211_FLAG_CLEAR_SKB,
14699         },
14700         {
14701                 .cmd = NL80211_CMD_DEL_PMK,
14702                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14703                 .doit = nl80211_del_pmk,
14704                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14705                                   NL80211_FLAG_NEED_RTNL,
14706         },
14707         {
14708                 .cmd = NL80211_CMD_EXTERNAL_AUTH,
14709                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14710                 .doit = nl80211_external_auth,
14711                 .flags = GENL_ADMIN_PERM,
14712                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14713                                   NL80211_FLAG_NEED_RTNL,
14714         },
14715         {
14716                 .cmd = NL80211_CMD_CONTROL_PORT_FRAME,
14717                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14718                 .doit = nl80211_tx_control_port,
14719                 .flags = GENL_UNS_ADMIN_PERM,
14720                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14721                                   NL80211_FLAG_NEED_RTNL,
14722         },
14723         {
14724                 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
14725                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14726                 .doit = nl80211_get_ftm_responder_stats,
14727                 .internal_flags = NL80211_FLAG_NEED_NETDEV |
14728                                   NL80211_FLAG_NEED_RTNL,
14729         },
14730         {
14731                 .cmd = NL80211_CMD_PEER_MEASUREMENT_START,
14732                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14733                 .doit = nl80211_pmsr_start,
14734                 .flags = GENL_UNS_ADMIN_PERM,
14735                 .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
14736                                   NL80211_FLAG_NEED_RTNL,
14737         },
14738         {
14739                 .cmd = NL80211_CMD_NOTIFY_RADAR,
14740                 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
14741                 .doit = nl80211_notify_radar_detection,
14742                 .flags = GENL_UNS_ADMIN_PERM,
14743                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14744                                   NL80211_FLAG_NEED_RTNL,
14745         },
14746         {
14747                 .cmd = NL80211_CMD_UPDATE_OWE_INFO,
14748                 .doit = nl80211_update_owe_info,
14749                 .flags = GENL_ADMIN_PERM,
14750                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14751                                   NL80211_FLAG_NEED_RTNL,
14752         },
14753         {
14754                 .cmd = NL80211_CMD_PROBE_MESH_LINK,
14755                 .doit = nl80211_probe_mesh_link,
14756                 .flags = GENL_UNS_ADMIN_PERM,
14757                 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
14758                                   NL80211_FLAG_NEED_RTNL,
14759         },
14760 };
14761
14762 static struct genl_family nl80211_fam __ro_after_init = {
14763         .name = NL80211_GENL_NAME,      /* have users key off the name instead */
14764         .hdrsize = 0,                   /* no private header */
14765         .version = 1,                   /* no particular meaning now */
14766         .maxattr = NL80211_ATTR_MAX,
14767         .policy = nl80211_policy,
14768         .netnsok = true,
14769         .pre_doit = nl80211_pre_doit,
14770         .post_doit = nl80211_post_doit,
14771         .module = THIS_MODULE,
14772         .ops = nl80211_ops,
14773         .n_ops = ARRAY_SIZE(nl80211_ops),
14774         .mcgrps = nl80211_mcgrps,
14775         .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps),
14776         .parallel_ops = true,
14777 };
14778
14779 /* notification functions */
14780
14781 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev,
14782                           enum nl80211_commands cmd)
14783 {
14784         struct sk_buff *msg;
14785         struct nl80211_dump_wiphy_state state = {};
14786
14787         WARN_ON(cmd != NL80211_CMD_NEW_WIPHY &&
14788                 cmd != NL80211_CMD_DEL_WIPHY);
14789
14790         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14791         if (!msg)
14792                 return;
14793
14794         if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) {
14795                 nlmsg_free(msg);
14796                 return;
14797         }
14798
14799         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14800                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14801 }
14802
14803 void nl80211_notify_iface(struct cfg80211_registered_device *rdev,
14804                                 struct wireless_dev *wdev,
14805                                 enum nl80211_commands cmd)
14806 {
14807         struct sk_buff *msg;
14808
14809         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14810         if (!msg)
14811                 return;
14812
14813         if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) {
14814                 nlmsg_free(msg);
14815                 return;
14816         }
14817
14818         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14819                                 NL80211_MCGRP_CONFIG, GFP_KERNEL);
14820 }
14821
14822 static int nl80211_add_scan_req(struct sk_buff *msg,
14823                                 struct cfg80211_registered_device *rdev)
14824 {
14825         struct cfg80211_scan_request *req = rdev->scan_req;
14826         struct nlattr *nest;
14827         int i;
14828
14829         if (WARN_ON(!req))
14830                 return 0;
14831
14832         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS);
14833         if (!nest)
14834                 goto nla_put_failure;
14835         for (i = 0; i < req->n_ssids; i++) {
14836                 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid))
14837                         goto nla_put_failure;
14838         }
14839         nla_nest_end(msg, nest);
14840
14841         nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES);
14842         if (!nest)
14843                 goto nla_put_failure;
14844         for (i = 0; i < req->n_channels; i++) {
14845                 if (nla_put_u32(msg, i, req->channels[i]->center_freq))
14846                         goto nla_put_failure;
14847         }
14848         nla_nest_end(msg, nest);
14849
14850         if (req->ie &&
14851             nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie))
14852                 goto nla_put_failure;
14853
14854         if (req->flags &&
14855             nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags))
14856                 goto nla_put_failure;
14857
14858         if (req->info.scan_start_tsf &&
14859             (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF,
14860                                req->info.scan_start_tsf, NL80211_BSS_PAD) ||
14861              nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN,
14862                      req->info.tsf_bssid)))
14863                 goto nla_put_failure;
14864
14865         return 0;
14866  nla_put_failure:
14867         return -ENOBUFS;
14868 }
14869
14870 static int nl80211_prep_scan_msg(struct sk_buff *msg,
14871                                  struct cfg80211_registered_device *rdev,
14872                                  struct wireless_dev *wdev,
14873                                  u32 portid, u32 seq, int flags,
14874                                  u32 cmd)
14875 {
14876         void *hdr;
14877
14878         hdr = nl80211hdr_put(msg, portid, seq, flags, cmd);
14879         if (!hdr)
14880                 return -1;
14881
14882         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
14883             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
14884                                          wdev->netdev->ifindex)) ||
14885             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
14886                               NL80211_ATTR_PAD))
14887                 goto nla_put_failure;
14888
14889         /* ignore errors and send incomplete event anyway */
14890         nl80211_add_scan_req(msg, rdev);
14891
14892         genlmsg_end(msg, hdr);
14893         return 0;
14894
14895  nla_put_failure:
14896         genlmsg_cancel(msg, hdr);
14897         return -EMSGSIZE;
14898 }
14899
14900 static int
14901 nl80211_prep_sched_scan_msg(struct sk_buff *msg,
14902                             struct cfg80211_sched_scan_request *req, u32 cmd)
14903 {
14904         void *hdr;
14905
14906         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
14907         if (!hdr)
14908                 return -1;
14909
14910         if (nla_put_u32(msg, NL80211_ATTR_WIPHY,
14911                         wiphy_to_rdev(req->wiphy)->wiphy_idx) ||
14912             nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) ||
14913             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid,
14914                               NL80211_ATTR_PAD))
14915                 goto nla_put_failure;
14916
14917         genlmsg_end(msg, hdr);
14918         return 0;
14919
14920  nla_put_failure:
14921         genlmsg_cancel(msg, hdr);
14922         return -EMSGSIZE;
14923 }
14924
14925 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev,
14926                              struct wireless_dev *wdev)
14927 {
14928         struct sk_buff *msg;
14929
14930         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14931         if (!msg)
14932                 return;
14933
14934         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14935                                   NL80211_CMD_TRIGGER_SCAN) < 0) {
14936                 nlmsg_free(msg);
14937                 return;
14938         }
14939
14940         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14941                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14942 }
14943
14944 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev,
14945                                        struct wireless_dev *wdev, bool aborted)
14946 {
14947         struct sk_buff *msg;
14948
14949         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14950         if (!msg)
14951                 return NULL;
14952
14953         if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0,
14954                                   aborted ? NL80211_CMD_SCAN_ABORTED :
14955                                             NL80211_CMD_NEW_SCAN_RESULTS) < 0) {
14956                 nlmsg_free(msg);
14957                 return NULL;
14958         }
14959
14960         return msg;
14961 }
14962
14963 /* send message created by nl80211_build_scan_msg() */
14964 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev,
14965                            struct sk_buff *msg)
14966 {
14967         if (!msg)
14968                 return;
14969
14970         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
14971                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14972 }
14973
14974 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd)
14975 {
14976         struct sk_buff *msg;
14977
14978         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
14979         if (!msg)
14980                 return;
14981
14982         if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) {
14983                 nlmsg_free(msg);
14984                 return;
14985         }
14986
14987         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0,
14988                                 NL80211_MCGRP_SCAN, GFP_KERNEL);
14989 }
14990
14991 static bool nl80211_reg_change_event_fill(struct sk_buff *msg,
14992                                           struct regulatory_request *request)
14993 {
14994         /* Userspace can always count this one always being set */
14995         if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator))
14996                 goto nla_put_failure;
14997
14998         if (request->alpha2[0] == '0' && request->alpha2[1] == '0') {
14999                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15000                                NL80211_REGDOM_TYPE_WORLD))
15001                         goto nla_put_failure;
15002         } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') {
15003                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15004                                NL80211_REGDOM_TYPE_CUSTOM_WORLD))
15005                         goto nla_put_failure;
15006         } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') ||
15007                    request->intersect) {
15008                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15009                                NL80211_REGDOM_TYPE_INTERSECTION))
15010                         goto nla_put_failure;
15011         } else {
15012                 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE,
15013                                NL80211_REGDOM_TYPE_COUNTRY) ||
15014                     nla_put_string(msg, NL80211_ATTR_REG_ALPHA2,
15015                                    request->alpha2))
15016                         goto nla_put_failure;
15017         }
15018
15019         if (request->wiphy_idx != WIPHY_IDX_INVALID) {
15020                 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx);
15021
15022                 if (wiphy &&
15023                     nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx))
15024                         goto nla_put_failure;
15025
15026                 if (wiphy &&
15027                     wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED &&
15028                     nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG))
15029                         goto nla_put_failure;
15030         }
15031
15032         return true;
15033
15034 nla_put_failure:
15035         return false;
15036 }
15037
15038 /*
15039  * This can happen on global regulatory changes or device specific settings
15040  * based on custom regulatory domains.
15041  */
15042 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id,
15043                                      struct regulatory_request *request)
15044 {
15045         struct sk_buff *msg;
15046         void *hdr;
15047
15048         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15049         if (!msg)
15050                 return;
15051
15052         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id);
15053         if (!hdr)
15054                 goto nla_put_failure;
15055
15056         if (!nl80211_reg_change_event_fill(msg, request))
15057                 goto nla_put_failure;
15058
15059         genlmsg_end(msg, hdr);
15060
15061         rcu_read_lock();
15062         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15063                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15064         rcu_read_unlock();
15065
15066         return;
15067
15068 nla_put_failure:
15069         nlmsg_free(msg);
15070 }
15071
15072 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev,
15073                                     struct net_device *netdev,
15074                                     const u8 *buf, size_t len,
15075                                     enum nl80211_commands cmd, gfp_t gfp,
15076                                     int uapsd_queues, const u8 *req_ies,
15077                                     size_t req_ies_len)
15078 {
15079         struct sk_buff *msg;
15080         void *hdr;
15081
15082         msg = nlmsg_new(100 + len + req_ies_len, gfp);
15083         if (!msg)
15084                 return;
15085
15086         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15087         if (!hdr) {
15088                 nlmsg_free(msg);
15089                 return;
15090         }
15091
15092         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15093             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15094             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15095             (req_ies &&
15096              nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies)))
15097                 goto nla_put_failure;
15098
15099         if (uapsd_queues >= 0) {
15100                 struct nlattr *nla_wmm =
15101                         nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME);
15102                 if (!nla_wmm)
15103                         goto nla_put_failure;
15104
15105                 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES,
15106                                uapsd_queues))
15107                         goto nla_put_failure;
15108
15109                 nla_nest_end(msg, nla_wmm);
15110         }
15111
15112         genlmsg_end(msg, hdr);
15113
15114         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15115                                 NL80211_MCGRP_MLME, gfp);
15116         return;
15117
15118  nla_put_failure:
15119         nlmsg_free(msg);
15120 }
15121
15122 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev,
15123                           struct net_device *netdev, const u8 *buf,
15124                           size_t len, gfp_t gfp)
15125 {
15126         nl80211_send_mlme_event(rdev, netdev, buf, len,
15127                                 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0);
15128 }
15129
15130 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev,
15131                            struct net_device *netdev, const u8 *buf,
15132                            size_t len, gfp_t gfp, int uapsd_queues,
15133                            const u8 *req_ies, size_t req_ies_len)
15134 {
15135         nl80211_send_mlme_event(rdev, netdev, buf, len,
15136                                 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues,
15137                                 req_ies, req_ies_len);
15138 }
15139
15140 void nl80211_send_deauth(struct cfg80211_registered_device *rdev,
15141                          struct net_device *netdev, const u8 *buf,
15142                          size_t len, gfp_t gfp)
15143 {
15144         nl80211_send_mlme_event(rdev, netdev, buf, len,
15145                                 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0);
15146 }
15147
15148 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev,
15149                            struct net_device *netdev, const u8 *buf,
15150                            size_t len, gfp_t gfp)
15151 {
15152         nl80211_send_mlme_event(rdev, netdev, buf, len,
15153                                 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0);
15154 }
15155
15156 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf,
15157                                   size_t len)
15158 {
15159         struct wireless_dev *wdev = dev->ieee80211_ptr;
15160         struct wiphy *wiphy = wdev->wiphy;
15161         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15162         const struct ieee80211_mgmt *mgmt = (void *)buf;
15163         u32 cmd;
15164
15165         if (WARN_ON(len < 2))
15166                 return;
15167
15168         if (ieee80211_is_deauth(mgmt->frame_control))
15169                 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE;
15170         else
15171                 cmd = NL80211_CMD_UNPROT_DISASSOCIATE;
15172
15173         trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len);
15174         nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1,
15175                                 NULL, 0);
15176 }
15177 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt);
15178
15179 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev,
15180                                       struct net_device *netdev, int cmd,
15181                                       const u8 *addr, gfp_t gfp)
15182 {
15183         struct sk_buff *msg;
15184         void *hdr;
15185
15186         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15187         if (!msg)
15188                 return;
15189
15190         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15191         if (!hdr) {
15192                 nlmsg_free(msg);
15193                 return;
15194         }
15195
15196         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15197             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15198             nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15199             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15200                 goto nla_put_failure;
15201
15202         genlmsg_end(msg, hdr);
15203
15204         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15205                                 NL80211_MCGRP_MLME, gfp);
15206         return;
15207
15208  nla_put_failure:
15209         nlmsg_free(msg);
15210 }
15211
15212 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev,
15213                                struct net_device *netdev, const u8 *addr,
15214                                gfp_t gfp)
15215 {
15216         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE,
15217                                   addr, gfp);
15218 }
15219
15220 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev,
15221                                 struct net_device *netdev, const u8 *addr,
15222                                 gfp_t gfp)
15223 {
15224         nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE,
15225                                   addr, gfp);
15226 }
15227
15228 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev,
15229                                  struct net_device *netdev,
15230                                  struct cfg80211_connect_resp_params *cr,
15231                                  gfp_t gfp)
15232 {
15233         struct sk_buff *msg;
15234         void *hdr;
15235
15236         msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len +
15237                         cr->fils.kek_len + cr->fils.pmk_len +
15238                         (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15239         if (!msg)
15240                 return;
15241
15242         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT);
15243         if (!hdr) {
15244                 nlmsg_free(msg);
15245                 return;
15246         }
15247
15248         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15249             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15250             (cr->bssid &&
15251              nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) ||
15252             nla_put_u16(msg, NL80211_ATTR_STATUS_CODE,
15253                         cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE :
15254                         cr->status) ||
15255             (cr->status < 0 &&
15256              (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) ||
15257               nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON,
15258                           cr->timeout_reason))) ||
15259             (cr->req_ie &&
15260              nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) ||
15261             (cr->resp_ie &&
15262              nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len,
15263                      cr->resp_ie)) ||
15264             (cr->fils.update_erp_next_seq_num &&
15265              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15266                          cr->fils.erp_next_seq_num)) ||
15267             (cr->status == WLAN_STATUS_SUCCESS &&
15268              ((cr->fils.kek &&
15269                nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len,
15270                        cr->fils.kek)) ||
15271               (cr->fils.pmk &&
15272                nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) ||
15273               (cr->fils.pmkid &&
15274                nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid)))))
15275                 goto nla_put_failure;
15276
15277         genlmsg_end(msg, hdr);
15278
15279         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15280                                 NL80211_MCGRP_MLME, gfp);
15281         return;
15282
15283  nla_put_failure:
15284         nlmsg_free(msg);
15285 }
15286
15287 void nl80211_send_roamed(struct cfg80211_registered_device *rdev,
15288                          struct net_device *netdev,
15289                          struct cfg80211_roam_info *info, gfp_t gfp)
15290 {
15291         struct sk_buff *msg;
15292         void *hdr;
15293         const u8 *bssid = info->bss ? info->bss->bssid : info->bssid;
15294
15295         msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len +
15296                         info->fils.kek_len + info->fils.pmk_len +
15297                         (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp);
15298         if (!msg)
15299                 return;
15300
15301         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM);
15302         if (!hdr) {
15303                 nlmsg_free(msg);
15304                 return;
15305         }
15306
15307         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15308             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15309             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) ||
15310             (info->req_ie &&
15311              nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len,
15312                      info->req_ie)) ||
15313             (info->resp_ie &&
15314              nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len,
15315                      info->resp_ie)) ||
15316             (info->fils.update_erp_next_seq_num &&
15317              nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM,
15318                          info->fils.erp_next_seq_num)) ||
15319             (info->fils.kek &&
15320              nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len,
15321                      info->fils.kek)) ||
15322             (info->fils.pmk &&
15323              nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) ||
15324             (info->fils.pmkid &&
15325              nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid)))
15326                 goto nla_put_failure;
15327
15328         genlmsg_end(msg, hdr);
15329
15330         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15331                                 NL80211_MCGRP_MLME, gfp);
15332         return;
15333
15334  nla_put_failure:
15335         nlmsg_free(msg);
15336 }
15337
15338 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev,
15339                                   struct net_device *netdev, const u8 *bssid)
15340 {
15341         struct sk_buff *msg;
15342         void *hdr;
15343
15344         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
15345         if (!msg)
15346                 return;
15347
15348         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED);
15349         if (!hdr) {
15350                 nlmsg_free(msg);
15351                 return;
15352         }
15353
15354         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15355             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15356             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15357                 goto nla_put_failure;
15358
15359         genlmsg_end(msg, hdr);
15360
15361         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15362                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15363         return;
15364
15365  nla_put_failure:
15366         nlmsg_free(msg);
15367 }
15368
15369 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev,
15370                                struct net_device *netdev, u16 reason,
15371                                const u8 *ie, size_t ie_len, bool from_ap)
15372 {
15373         struct sk_buff *msg;
15374         void *hdr;
15375
15376         msg = nlmsg_new(100 + ie_len, GFP_KERNEL);
15377         if (!msg)
15378                 return;
15379
15380         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT);
15381         if (!hdr) {
15382                 nlmsg_free(msg);
15383                 return;
15384         }
15385
15386         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15387             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15388             (reason &&
15389              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) ||
15390             (from_ap &&
15391              nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) ||
15392             (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie)))
15393                 goto nla_put_failure;
15394
15395         genlmsg_end(msg, hdr);
15396
15397         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15398                                 NL80211_MCGRP_MLME, GFP_KERNEL);
15399         return;
15400
15401  nla_put_failure:
15402         nlmsg_free(msg);
15403 }
15404
15405 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev,
15406                              struct net_device *netdev, const u8 *bssid,
15407                              gfp_t gfp)
15408 {
15409         struct sk_buff *msg;
15410         void *hdr;
15411
15412         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15413         if (!msg)
15414                 return;
15415
15416         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS);
15417         if (!hdr) {
15418                 nlmsg_free(msg);
15419                 return;
15420         }
15421
15422         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15423             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15424             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
15425                 goto nla_put_failure;
15426
15427         genlmsg_end(msg, hdr);
15428
15429         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15430                                 NL80211_MCGRP_MLME, gfp);
15431         return;
15432
15433  nla_put_failure:
15434         nlmsg_free(msg);
15435 }
15436
15437 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr,
15438                                         const u8 *ie, u8 ie_len,
15439                                         int sig_dbm, gfp_t gfp)
15440 {
15441         struct wireless_dev *wdev = dev->ieee80211_ptr;
15442         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15443         struct sk_buff *msg;
15444         void *hdr;
15445
15446         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT))
15447                 return;
15448
15449         trace_cfg80211_notify_new_peer_candidate(dev, addr);
15450
15451         msg = nlmsg_new(100 + ie_len, gfp);
15452         if (!msg)
15453                 return;
15454
15455         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE);
15456         if (!hdr) {
15457                 nlmsg_free(msg);
15458                 return;
15459         }
15460
15461         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15462             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15463             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15464             (ie_len && ie &&
15465              nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) ||
15466             (sig_dbm &&
15467              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)))
15468                 goto nla_put_failure;
15469
15470         genlmsg_end(msg, hdr);
15471
15472         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15473                                 NL80211_MCGRP_MLME, gfp);
15474         return;
15475
15476  nla_put_failure:
15477         nlmsg_free(msg);
15478 }
15479 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate);
15480
15481 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev,
15482                                  struct net_device *netdev, const u8 *addr,
15483                                  enum nl80211_key_type key_type, int key_id,
15484                                  const u8 *tsc, gfp_t gfp)
15485 {
15486         struct sk_buff *msg;
15487         void *hdr;
15488
15489         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15490         if (!msg)
15491                 return;
15492
15493         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE);
15494         if (!hdr) {
15495                 nlmsg_free(msg);
15496                 return;
15497         }
15498
15499         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15500             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
15501             (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) ||
15502             nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) ||
15503             (key_id != -1 &&
15504              nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) ||
15505             (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc)))
15506                 goto nla_put_failure;
15507
15508         genlmsg_end(msg, hdr);
15509
15510         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15511                                 NL80211_MCGRP_MLME, gfp);
15512         return;
15513
15514  nla_put_failure:
15515         nlmsg_free(msg);
15516 }
15517
15518 void nl80211_send_beacon_hint_event(struct wiphy *wiphy,
15519                                     struct ieee80211_channel *channel_before,
15520                                     struct ieee80211_channel *channel_after)
15521 {
15522         struct sk_buff *msg;
15523         void *hdr;
15524         struct nlattr *nl_freq;
15525
15526         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC);
15527         if (!msg)
15528                 return;
15529
15530         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT);
15531         if (!hdr) {
15532                 nlmsg_free(msg);
15533                 return;
15534         }
15535
15536         /*
15537          * Since we are applying the beacon hint to a wiphy we know its
15538          * wiphy_idx is valid
15539          */
15540         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy)))
15541                 goto nla_put_failure;
15542
15543         /* Before */
15544         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE);
15545         if (!nl_freq)
15546                 goto nla_put_failure;
15547
15548         if (nl80211_msg_put_channel(msg, wiphy, channel_before, false))
15549                 goto nla_put_failure;
15550         nla_nest_end(msg, nl_freq);
15551
15552         /* After */
15553         nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER);
15554         if (!nl_freq)
15555                 goto nla_put_failure;
15556
15557         if (nl80211_msg_put_channel(msg, wiphy, channel_after, false))
15558                 goto nla_put_failure;
15559         nla_nest_end(msg, nl_freq);
15560
15561         genlmsg_end(msg, hdr);
15562
15563         rcu_read_lock();
15564         genlmsg_multicast_allns(&nl80211_fam, msg, 0,
15565                                 NL80211_MCGRP_REGULATORY, GFP_ATOMIC);
15566         rcu_read_unlock();
15567
15568         return;
15569
15570 nla_put_failure:
15571         nlmsg_free(msg);
15572 }
15573
15574 static void nl80211_send_remain_on_chan_event(
15575         int cmd, struct cfg80211_registered_device *rdev,
15576         struct wireless_dev *wdev, u64 cookie,
15577         struct ieee80211_channel *chan,
15578         unsigned int duration, gfp_t gfp)
15579 {
15580         struct sk_buff *msg;
15581         void *hdr;
15582
15583         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15584         if (!msg)
15585                 return;
15586
15587         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15588         if (!hdr) {
15589                 nlmsg_free(msg);
15590                 return;
15591         }
15592
15593         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15594             (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15595                                          wdev->netdev->ifindex)) ||
15596             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15597                               NL80211_ATTR_PAD) ||
15598             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) ||
15599             nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
15600                         NL80211_CHAN_NO_HT) ||
15601             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15602                               NL80211_ATTR_PAD))
15603                 goto nla_put_failure;
15604
15605         if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL &&
15606             nla_put_u32(msg, NL80211_ATTR_DURATION, duration))
15607                 goto nla_put_failure;
15608
15609         genlmsg_end(msg, hdr);
15610
15611         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15612                                 NL80211_MCGRP_MLME, gfp);
15613         return;
15614
15615  nla_put_failure:
15616         nlmsg_free(msg);
15617 }
15618
15619 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie,
15620                                struct ieee80211_channel *chan,
15621                                unsigned int duration, gfp_t gfp)
15622 {
15623         struct wiphy *wiphy = wdev->wiphy;
15624         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15625
15626         trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration);
15627         nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL,
15628                                           rdev, wdev, cookie, chan,
15629                                           duration, gfp);
15630 }
15631 EXPORT_SYMBOL(cfg80211_ready_on_channel);
15632
15633 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie,
15634                                         struct ieee80211_channel *chan,
15635                                         gfp_t gfp)
15636 {
15637         struct wiphy *wiphy = wdev->wiphy;
15638         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15639
15640         trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan);
15641         nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
15642                                           rdev, wdev, cookie, chan, 0, gfp);
15643 }
15644 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired);
15645
15646 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie,
15647                                         struct ieee80211_channel *chan,
15648                                         gfp_t gfp)
15649 {
15650         struct wiphy *wiphy = wdev->wiphy;
15651         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15652
15653         trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan);
15654         nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL,
15655                                           rdev, wdev, cookie, chan, 0, gfp);
15656 }
15657 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired);
15658
15659 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr,
15660                       struct station_info *sinfo, gfp_t gfp)
15661 {
15662         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15663         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15664         struct sk_buff *msg;
15665
15666         trace_cfg80211_new_sta(dev, mac_addr, sinfo);
15667
15668         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15669         if (!msg)
15670                 return;
15671
15672         if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0,
15673                                  rdev, dev, mac_addr, sinfo) < 0) {
15674                 nlmsg_free(msg);
15675                 return;
15676         }
15677
15678         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15679                                 NL80211_MCGRP_MLME, gfp);
15680 }
15681 EXPORT_SYMBOL(cfg80211_new_sta);
15682
15683 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr,
15684                             struct station_info *sinfo, gfp_t gfp)
15685 {
15686         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15687         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15688         struct sk_buff *msg;
15689         struct station_info empty_sinfo = {};
15690
15691         if (!sinfo)
15692                 sinfo = &empty_sinfo;
15693
15694         trace_cfg80211_del_sta(dev, mac_addr);
15695
15696         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15697         if (!msg) {
15698                 cfg80211_sinfo_release_content(sinfo);
15699                 return;
15700         }
15701
15702         if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0,
15703                                  rdev, dev, mac_addr, sinfo) < 0) {
15704                 nlmsg_free(msg);
15705                 return;
15706         }
15707
15708         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15709                                 NL80211_MCGRP_MLME, gfp);
15710 }
15711 EXPORT_SYMBOL(cfg80211_del_sta_sinfo);
15712
15713 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr,
15714                           enum nl80211_connect_failed_reason reason,
15715                           gfp_t gfp)
15716 {
15717         struct wiphy *wiphy = dev->ieee80211_ptr->wiphy;
15718         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15719         struct sk_buff *msg;
15720         void *hdr;
15721
15722         msg = nlmsg_new(NLMSG_GOODSIZE, gfp);
15723         if (!msg)
15724                 return;
15725
15726         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED);
15727         if (!hdr) {
15728                 nlmsg_free(msg);
15729                 return;
15730         }
15731
15732         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15733             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) ||
15734             nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason))
15735                 goto nla_put_failure;
15736
15737         genlmsg_end(msg, hdr);
15738
15739         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15740                                 NL80211_MCGRP_MLME, gfp);
15741         return;
15742
15743  nla_put_failure:
15744         nlmsg_free(msg);
15745 }
15746 EXPORT_SYMBOL(cfg80211_conn_failed);
15747
15748 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd,
15749                                        const u8 *addr, gfp_t gfp)
15750 {
15751         struct wireless_dev *wdev = dev->ieee80211_ptr;
15752         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15753         struct sk_buff *msg;
15754         void *hdr;
15755         u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid);
15756
15757         if (!nlportid)
15758                 return false;
15759
15760         msg = nlmsg_new(100, gfp);
15761         if (!msg)
15762                 return true;
15763
15764         hdr = nl80211hdr_put(msg, 0, 0, 0, cmd);
15765         if (!hdr) {
15766                 nlmsg_free(msg);
15767                 return true;
15768         }
15769
15770         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15771             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15772             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr))
15773                 goto nla_put_failure;
15774
15775         genlmsg_end(msg, hdr);
15776         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15777         return true;
15778
15779  nla_put_failure:
15780         nlmsg_free(msg);
15781         return true;
15782 }
15783
15784 bool cfg80211_rx_spurious_frame(struct net_device *dev,
15785                                 const u8 *addr, gfp_t gfp)
15786 {
15787         struct wireless_dev *wdev = dev->ieee80211_ptr;
15788         bool ret;
15789
15790         trace_cfg80211_rx_spurious_frame(dev, addr);
15791
15792         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15793                     wdev->iftype != NL80211_IFTYPE_P2P_GO)) {
15794                 trace_cfg80211_return_bool(false);
15795                 return false;
15796         }
15797         ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME,
15798                                          addr, gfp);
15799         trace_cfg80211_return_bool(ret);
15800         return ret;
15801 }
15802 EXPORT_SYMBOL(cfg80211_rx_spurious_frame);
15803
15804 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev,
15805                                         const u8 *addr, gfp_t gfp)
15806 {
15807         struct wireless_dev *wdev = dev->ieee80211_ptr;
15808         bool ret;
15809
15810         trace_cfg80211_rx_unexpected_4addr_frame(dev, addr);
15811
15812         if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP &&
15813                     wdev->iftype != NL80211_IFTYPE_P2P_GO &&
15814                     wdev->iftype != NL80211_IFTYPE_AP_VLAN)) {
15815                 trace_cfg80211_return_bool(false);
15816                 return false;
15817         }
15818         ret = __nl80211_unexpected_frame(dev,
15819                                          NL80211_CMD_UNEXPECTED_4ADDR_FRAME,
15820                                          addr, gfp);
15821         trace_cfg80211_return_bool(ret);
15822         return ret;
15823 }
15824 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame);
15825
15826 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev,
15827                       struct wireless_dev *wdev, u32 nlportid,
15828                       int freq, int sig_dbm,
15829                       const u8 *buf, size_t len, u32 flags, gfp_t gfp)
15830 {
15831         struct net_device *netdev = wdev->netdev;
15832         struct sk_buff *msg;
15833         void *hdr;
15834
15835         msg = nlmsg_new(100 + len, gfp);
15836         if (!msg)
15837                 return -ENOMEM;
15838
15839         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
15840         if (!hdr) {
15841                 nlmsg_free(msg);
15842                 return -ENOMEM;
15843         }
15844
15845         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15846             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15847                                         netdev->ifindex)) ||
15848             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15849                               NL80211_ATTR_PAD) ||
15850             nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) ||
15851             (sig_dbm &&
15852              nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
15853             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15854             (flags &&
15855              nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags)))
15856                 goto nla_put_failure;
15857
15858         genlmsg_end(msg, hdr);
15859
15860         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15861
15862  nla_put_failure:
15863         nlmsg_free(msg);
15864         return -ENOBUFS;
15865 }
15866
15867 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie,
15868                              const u8 *buf, size_t len, bool ack, gfp_t gfp)
15869 {
15870         struct wiphy *wiphy = wdev->wiphy;
15871         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
15872         struct net_device *netdev = wdev->netdev;
15873         struct sk_buff *msg;
15874         void *hdr;
15875
15876         trace_cfg80211_mgmt_tx_status(wdev, cookie, ack);
15877
15878         msg = nlmsg_new(100 + len, gfp);
15879         if (!msg)
15880                 return;
15881
15882         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS);
15883         if (!hdr) {
15884                 nlmsg_free(msg);
15885                 return;
15886         }
15887
15888         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15889             (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
15890                                    netdev->ifindex)) ||
15891             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15892                               NL80211_ATTR_PAD) ||
15893             nla_put(msg, NL80211_ATTR_FRAME, len, buf) ||
15894             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
15895                               NL80211_ATTR_PAD) ||
15896             (ack && nla_put_flag(msg, NL80211_ATTR_ACK)))
15897                 goto nla_put_failure;
15898
15899         genlmsg_end(msg, hdr);
15900
15901         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
15902                                 NL80211_MCGRP_MLME, gfp);
15903         return;
15904
15905  nla_put_failure:
15906         nlmsg_free(msg);
15907 }
15908 EXPORT_SYMBOL(cfg80211_mgmt_tx_status);
15909
15910 static int __nl80211_rx_control_port(struct net_device *dev,
15911                                      struct sk_buff *skb,
15912                                      bool unencrypted, gfp_t gfp)
15913 {
15914         struct wireless_dev *wdev = dev->ieee80211_ptr;
15915         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15916         struct ethhdr *ehdr = eth_hdr(skb);
15917         const u8 *addr = ehdr->h_source;
15918         u16 proto = be16_to_cpu(skb->protocol);
15919         struct sk_buff *msg;
15920         void *hdr;
15921         struct nlattr *frame;
15922
15923         u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid);
15924
15925         if (!nlportid)
15926                 return -ENOENT;
15927
15928         msg = nlmsg_new(100 + skb->len, gfp);
15929         if (!msg)
15930                 return -ENOMEM;
15931
15932         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME);
15933         if (!hdr) {
15934                 nlmsg_free(msg);
15935                 return -ENOBUFS;
15936         }
15937
15938         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15939             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
15940             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
15941                               NL80211_ATTR_PAD) ||
15942             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
15943             nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) ||
15944             (unencrypted && nla_put_flag(msg,
15945                                          NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT)))
15946                 goto nla_put_failure;
15947
15948         frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len);
15949         if (!frame)
15950                 goto nla_put_failure;
15951
15952         skb_copy_bits(skb, 0, nla_data(frame), skb->len);
15953         genlmsg_end(msg, hdr);
15954
15955         return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
15956
15957  nla_put_failure:
15958         nlmsg_free(msg);
15959         return -ENOBUFS;
15960 }
15961
15962 bool cfg80211_rx_control_port(struct net_device *dev,
15963                               struct sk_buff *skb, bool unencrypted)
15964 {
15965         int ret;
15966
15967         trace_cfg80211_rx_control_port(dev, skb, unencrypted);
15968         ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC);
15969         trace_cfg80211_return_bool(ret == 0);
15970         return ret == 0;
15971 }
15972 EXPORT_SYMBOL(cfg80211_rx_control_port);
15973
15974 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev,
15975                                             const char *mac, gfp_t gfp)
15976 {
15977         struct wireless_dev *wdev = dev->ieee80211_ptr;
15978         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
15979         struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
15980         void **cb;
15981
15982         if (!msg)
15983                 return NULL;
15984
15985         cb = (void **)msg->cb;
15986
15987         cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM);
15988         if (!cb[0]) {
15989                 nlmsg_free(msg);
15990                 return NULL;
15991         }
15992
15993         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
15994             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
15995                 goto nla_put_failure;
15996
15997         if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
15998                 goto nla_put_failure;
15999
16000         cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM);
16001         if (!cb[1])
16002                 goto nla_put_failure;
16003
16004         cb[2] = rdev;
16005
16006         return msg;
16007  nla_put_failure:
16008         nlmsg_free(msg);
16009         return NULL;
16010 }
16011
16012 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp)
16013 {
16014         void **cb = (void **)msg->cb;
16015         struct cfg80211_registered_device *rdev = cb[2];
16016
16017         nla_nest_end(msg, cb[1]);
16018         genlmsg_end(msg, cb[0]);
16019
16020         memset(msg->cb, 0, sizeof(msg->cb));
16021
16022         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16023                                 NL80211_MCGRP_MLME, gfp);
16024 }
16025
16026 void cfg80211_cqm_rssi_notify(struct net_device *dev,
16027                               enum nl80211_cqm_rssi_threshold_event rssi_event,
16028                               s32 rssi_level, gfp_t gfp)
16029 {
16030         struct sk_buff *msg;
16031         struct wireless_dev *wdev = dev->ieee80211_ptr;
16032         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16033
16034         trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level);
16035
16036         if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW &&
16037                     rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH))
16038                 return;
16039
16040         if (wdev->cqm_config) {
16041                 wdev->cqm_config->last_rssi_event_value = rssi_level;
16042
16043                 cfg80211_cqm_rssi_update(rdev, dev);
16044
16045                 if (rssi_level == 0)
16046                         rssi_level = wdev->cqm_config->last_rssi_event_value;
16047         }
16048
16049         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16050         if (!msg)
16051                 return;
16052
16053         if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT,
16054                         rssi_event))
16055                 goto nla_put_failure;
16056
16057         if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL,
16058                                       rssi_level))
16059                 goto nla_put_failure;
16060
16061         cfg80211_send_cqm(msg, gfp);
16062
16063         return;
16064
16065  nla_put_failure:
16066         nlmsg_free(msg);
16067 }
16068 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify);
16069
16070 void cfg80211_cqm_txe_notify(struct net_device *dev,
16071                              const u8 *peer, u32 num_packets,
16072                              u32 rate, u32 intvl, gfp_t gfp)
16073 {
16074         struct sk_buff *msg;
16075
16076         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16077         if (!msg)
16078                 return;
16079
16080         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets))
16081                 goto nla_put_failure;
16082
16083         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate))
16084                 goto nla_put_failure;
16085
16086         if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl))
16087                 goto nla_put_failure;
16088
16089         cfg80211_send_cqm(msg, gfp);
16090         return;
16091
16092  nla_put_failure:
16093         nlmsg_free(msg);
16094 }
16095 EXPORT_SYMBOL(cfg80211_cqm_txe_notify);
16096
16097 void cfg80211_cqm_pktloss_notify(struct net_device *dev,
16098                                  const u8 *peer, u32 num_packets, gfp_t gfp)
16099 {
16100         struct sk_buff *msg;
16101
16102         trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets);
16103
16104         msg = cfg80211_prepare_cqm(dev, peer, gfp);
16105         if (!msg)
16106                 return;
16107
16108         if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets))
16109                 goto nla_put_failure;
16110
16111         cfg80211_send_cqm(msg, gfp);
16112         return;
16113
16114  nla_put_failure:
16115         nlmsg_free(msg);
16116 }
16117 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify);
16118
16119 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp)
16120 {
16121         struct sk_buff *msg;
16122
16123         msg = cfg80211_prepare_cqm(dev, NULL, gfp);
16124         if (!msg)
16125                 return;
16126
16127         if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT))
16128                 goto nla_put_failure;
16129
16130         cfg80211_send_cqm(msg, gfp);
16131         return;
16132
16133  nla_put_failure:
16134         nlmsg_free(msg);
16135 }
16136 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify);
16137
16138 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev,
16139                                      struct net_device *netdev, const u8 *bssid,
16140                                      const u8 *replay_ctr, gfp_t gfp)
16141 {
16142         struct sk_buff *msg;
16143         struct nlattr *rekey_attr;
16144         void *hdr;
16145
16146         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16147         if (!msg)
16148                 return;
16149
16150         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD);
16151         if (!hdr) {
16152                 nlmsg_free(msg);
16153                 return;
16154         }
16155
16156         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16157             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16158             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid))
16159                 goto nla_put_failure;
16160
16161         rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA);
16162         if (!rekey_attr)
16163                 goto nla_put_failure;
16164
16165         if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR,
16166                     NL80211_REPLAY_CTR_LEN, replay_ctr))
16167                 goto nla_put_failure;
16168
16169         nla_nest_end(msg, rekey_attr);
16170
16171         genlmsg_end(msg, hdr);
16172
16173         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16174                                 NL80211_MCGRP_MLME, gfp);
16175         return;
16176
16177  nla_put_failure:
16178         nlmsg_free(msg);
16179 }
16180
16181 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid,
16182                                const u8 *replay_ctr, gfp_t gfp)
16183 {
16184         struct wireless_dev *wdev = dev->ieee80211_ptr;
16185         struct wiphy *wiphy = wdev->wiphy;
16186         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16187
16188         trace_cfg80211_gtk_rekey_notify(dev, bssid);
16189         nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp);
16190 }
16191 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify);
16192
16193 static void
16194 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev,
16195                                struct net_device *netdev, int index,
16196                                const u8 *bssid, bool preauth, gfp_t gfp)
16197 {
16198         struct sk_buff *msg;
16199         struct nlattr *attr;
16200         void *hdr;
16201
16202         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16203         if (!msg)
16204                 return;
16205
16206         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE);
16207         if (!hdr) {
16208                 nlmsg_free(msg);
16209                 return;
16210         }
16211
16212         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16213             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16214                 goto nla_put_failure;
16215
16216         attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE);
16217         if (!attr)
16218                 goto nla_put_failure;
16219
16220         if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) ||
16221             nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) ||
16222             (preauth &&
16223              nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH)))
16224                 goto nla_put_failure;
16225
16226         nla_nest_end(msg, attr);
16227
16228         genlmsg_end(msg, hdr);
16229
16230         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16231                                 NL80211_MCGRP_MLME, gfp);
16232         return;
16233
16234  nla_put_failure:
16235         nlmsg_free(msg);
16236 }
16237
16238 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
16239                                      const u8 *bssid, bool preauth, gfp_t gfp)
16240 {
16241         struct wireless_dev *wdev = dev->ieee80211_ptr;
16242         struct wiphy *wiphy = wdev->wiphy;
16243         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16244
16245         trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth);
16246         nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp);
16247 }
16248 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify);
16249
16250 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
16251                                      struct net_device *netdev,
16252                                      struct cfg80211_chan_def *chandef,
16253                                      gfp_t gfp,
16254                                      enum nl80211_commands notif,
16255                                      u8 count)
16256 {
16257         struct sk_buff *msg;
16258         void *hdr;
16259
16260         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16261         if (!msg)
16262                 return;
16263
16264         hdr = nl80211hdr_put(msg, 0, 0, 0, notif);
16265         if (!hdr) {
16266                 nlmsg_free(msg);
16267                 return;
16268         }
16269
16270         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex))
16271                 goto nla_put_failure;
16272
16273         if (nl80211_send_chandef(msg, chandef))
16274                 goto nla_put_failure;
16275
16276         if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) &&
16277             (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count)))
16278                         goto nla_put_failure;
16279
16280         genlmsg_end(msg, hdr);
16281
16282         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16283                                 NL80211_MCGRP_MLME, gfp);
16284         return;
16285
16286  nla_put_failure:
16287         nlmsg_free(msg);
16288 }
16289
16290 void cfg80211_ch_switch_notify(struct net_device *dev,
16291                                struct cfg80211_chan_def *chandef)
16292 {
16293         struct wireless_dev *wdev = dev->ieee80211_ptr;
16294         struct wiphy *wiphy = wdev->wiphy;
16295         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16296
16297         ASSERT_WDEV_LOCK(wdev);
16298
16299         trace_cfg80211_ch_switch_notify(dev, chandef);
16300
16301         wdev->chandef = *chandef;
16302         wdev->preset_chandef = *chandef;
16303
16304         if (wdev->iftype == NL80211_IFTYPE_STATION &&
16305             !WARN_ON(!wdev->current_bss))
16306                 cfg80211_update_assoc_bss_entry(wdev, chandef->chan);
16307
16308         cfg80211_sched_dfs_chan_update(rdev);
16309
16310         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16311                                  NL80211_CMD_CH_SWITCH_NOTIFY, 0);
16312 }
16313 EXPORT_SYMBOL(cfg80211_ch_switch_notify);
16314
16315 void cfg80211_ch_switch_started_notify(struct net_device *dev,
16316                                        struct cfg80211_chan_def *chandef,
16317                                        u8 count)
16318 {
16319         struct wireless_dev *wdev = dev->ieee80211_ptr;
16320         struct wiphy *wiphy = wdev->wiphy;
16321         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16322
16323         trace_cfg80211_ch_switch_started_notify(dev, chandef);
16324
16325         nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL,
16326                                  NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count);
16327 }
16328 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify);
16329
16330 void
16331 nl80211_radar_notify(struct cfg80211_registered_device *rdev,
16332                      const struct cfg80211_chan_def *chandef,
16333                      enum nl80211_radar_event event,
16334                      struct net_device *netdev, gfp_t gfp)
16335 {
16336         struct sk_buff *msg;
16337         void *hdr;
16338
16339         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16340         if (!msg)
16341                 return;
16342
16343         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT);
16344         if (!hdr) {
16345                 nlmsg_free(msg);
16346                 return;
16347         }
16348
16349         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16350                 goto nla_put_failure;
16351
16352         /* NOP and radar events don't need a netdev parameter */
16353         if (netdev) {
16354                 struct wireless_dev *wdev = netdev->ieee80211_ptr;
16355
16356                 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16357                     nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16358                                       NL80211_ATTR_PAD))
16359                         goto nla_put_failure;
16360         }
16361
16362         if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event))
16363                 goto nla_put_failure;
16364
16365         if (nl80211_send_chandef(msg, chandef))
16366                 goto nla_put_failure;
16367
16368         genlmsg_end(msg, hdr);
16369
16370         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16371                                 NL80211_MCGRP_MLME, gfp);
16372         return;
16373
16374  nla_put_failure:
16375         nlmsg_free(msg);
16376 }
16377
16378 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac,
16379                                        struct sta_opmode_info *sta_opmode,
16380                                        gfp_t gfp)
16381 {
16382         struct sk_buff *msg;
16383         struct wireless_dev *wdev = dev->ieee80211_ptr;
16384         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16385         void *hdr;
16386
16387         if (WARN_ON(!mac))
16388                 return;
16389
16390         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16391         if (!msg)
16392                 return;
16393
16394         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED);
16395         if (!hdr) {
16396                 nlmsg_free(msg);
16397                 return;
16398         }
16399
16400         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx))
16401                 goto nla_put_failure;
16402
16403         if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex))
16404                 goto nla_put_failure;
16405
16406         if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac))
16407                 goto nla_put_failure;
16408
16409         if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) &&
16410             nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode))
16411                 goto nla_put_failure;
16412
16413         if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) &&
16414             nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw))
16415                 goto nla_put_failure;
16416
16417         if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) &&
16418             nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss))
16419                 goto nla_put_failure;
16420
16421         genlmsg_end(msg, hdr);
16422
16423         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16424                                 NL80211_MCGRP_MLME, gfp);
16425
16426         return;
16427
16428 nla_put_failure:
16429         nlmsg_free(msg);
16430 }
16431 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify);
16432
16433 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
16434                            u64 cookie, bool acked, s32 ack_signal,
16435                            bool is_valid_ack_signal, gfp_t gfp)
16436 {
16437         struct wireless_dev *wdev = dev->ieee80211_ptr;
16438         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16439         struct sk_buff *msg;
16440         void *hdr;
16441
16442         trace_cfg80211_probe_status(dev, addr, cookie, acked);
16443
16444         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16445
16446         if (!msg)
16447                 return;
16448
16449         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT);
16450         if (!hdr) {
16451                 nlmsg_free(msg);
16452                 return;
16453         }
16454
16455         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16456             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16457             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) ||
16458             nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie,
16459                               NL80211_ATTR_PAD) ||
16460             (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) ||
16461             (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL,
16462                                                 ack_signal)))
16463                 goto nla_put_failure;
16464
16465         genlmsg_end(msg, hdr);
16466
16467         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16468                                 NL80211_MCGRP_MLME, gfp);
16469         return;
16470
16471  nla_put_failure:
16472         nlmsg_free(msg);
16473 }
16474 EXPORT_SYMBOL(cfg80211_probe_status);
16475
16476 void cfg80211_report_obss_beacon(struct wiphy *wiphy,
16477                                  const u8 *frame, size_t len,
16478                                  int freq, int sig_dbm)
16479 {
16480         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16481         struct sk_buff *msg;
16482         void *hdr;
16483         struct cfg80211_beacon_registration *reg;
16484
16485         trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm);
16486
16487         spin_lock_bh(&rdev->beacon_registrations_lock);
16488         list_for_each_entry(reg, &rdev->beacon_registrations, list) {
16489                 msg = nlmsg_new(len + 100, GFP_ATOMIC);
16490                 if (!msg) {
16491                         spin_unlock_bh(&rdev->beacon_registrations_lock);
16492                         return;
16493                 }
16494
16495                 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME);
16496                 if (!hdr)
16497                         goto nla_put_failure;
16498
16499                 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16500                     (freq &&
16501                      nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) ||
16502                     (sig_dbm &&
16503                      nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) ||
16504                     nla_put(msg, NL80211_ATTR_FRAME, len, frame))
16505                         goto nla_put_failure;
16506
16507                 genlmsg_end(msg, hdr);
16508
16509                 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid);
16510         }
16511         spin_unlock_bh(&rdev->beacon_registrations_lock);
16512         return;
16513
16514  nla_put_failure:
16515         spin_unlock_bh(&rdev->beacon_registrations_lock);
16516         nlmsg_free(msg);
16517 }
16518 EXPORT_SYMBOL(cfg80211_report_obss_beacon);
16519
16520 #ifdef CONFIG_PM
16521 static int cfg80211_net_detect_results(struct sk_buff *msg,
16522                                        struct cfg80211_wowlan_wakeup *wakeup)
16523 {
16524         struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect;
16525         struct nlattr *nl_results, *nl_match, *nl_freqs;
16526         int i, j;
16527
16528         nl_results = nla_nest_start_noflag(msg,
16529                                            NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS);
16530         if (!nl_results)
16531                 return -EMSGSIZE;
16532
16533         for (i = 0; i < nd->n_matches; i++) {
16534                 struct cfg80211_wowlan_nd_match *match = nd->matches[i];
16535
16536                 nl_match = nla_nest_start_noflag(msg, i);
16537                 if (!nl_match)
16538                         break;
16539
16540                 /* The SSID attribute is optional in nl80211, but for
16541                  * simplicity reasons it's always present in the
16542                  * cfg80211 structure.  If a driver can't pass the
16543                  * SSID, that needs to be changed.  A zero length SSID
16544                  * is still a valid SSID (wildcard), so it cannot be
16545                  * used for this purpose.
16546                  */
16547                 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len,
16548                             match->ssid.ssid)) {
16549                         nla_nest_cancel(msg, nl_match);
16550                         goto out;
16551                 }
16552
16553                 if (match->n_channels) {
16554                         nl_freqs = nla_nest_start_noflag(msg,
16555                                                          NL80211_ATTR_SCAN_FREQUENCIES);
16556                         if (!nl_freqs) {
16557                                 nla_nest_cancel(msg, nl_match);
16558                                 goto out;
16559                         }
16560
16561                         for (j = 0; j < match->n_channels; j++) {
16562                                 if (nla_put_u32(msg, j, match->channels[j])) {
16563                                         nla_nest_cancel(msg, nl_freqs);
16564                                         nla_nest_cancel(msg, nl_match);
16565                                         goto out;
16566                                 }
16567                         }
16568
16569                         nla_nest_end(msg, nl_freqs);
16570                 }
16571
16572                 nla_nest_end(msg, nl_match);
16573         }
16574
16575 out:
16576         nla_nest_end(msg, nl_results);
16577         return 0;
16578 }
16579
16580 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev,
16581                                    struct cfg80211_wowlan_wakeup *wakeup,
16582                                    gfp_t gfp)
16583 {
16584         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16585         struct sk_buff *msg;
16586         void *hdr;
16587         int size = 200;
16588
16589         trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup);
16590
16591         if (wakeup)
16592                 size += wakeup->packet_present_len;
16593
16594         msg = nlmsg_new(size, gfp);
16595         if (!msg)
16596                 return;
16597
16598         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN);
16599         if (!hdr)
16600                 goto free_msg;
16601
16602         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16603             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16604                               NL80211_ATTR_PAD))
16605                 goto free_msg;
16606
16607         if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX,
16608                                         wdev->netdev->ifindex))
16609                 goto free_msg;
16610
16611         if (wakeup) {
16612                 struct nlattr *reasons;
16613
16614                 reasons = nla_nest_start_noflag(msg,
16615                                                 NL80211_ATTR_WOWLAN_TRIGGERS);
16616                 if (!reasons)
16617                         goto free_msg;
16618
16619                 if (wakeup->disconnect &&
16620                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT))
16621                         goto free_msg;
16622                 if (wakeup->magic_pkt &&
16623                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT))
16624                         goto free_msg;
16625                 if (wakeup->gtk_rekey_failure &&
16626                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE))
16627                         goto free_msg;
16628                 if (wakeup->eap_identity_req &&
16629                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST))
16630                         goto free_msg;
16631                 if (wakeup->four_way_handshake &&
16632                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE))
16633                         goto free_msg;
16634                 if (wakeup->rfkill_release &&
16635                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))
16636                         goto free_msg;
16637
16638                 if (wakeup->pattern_idx >= 0 &&
16639                     nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN,
16640                                 wakeup->pattern_idx))
16641                         goto free_msg;
16642
16643                 if (wakeup->tcp_match &&
16644                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH))
16645                         goto free_msg;
16646
16647                 if (wakeup->tcp_connlost &&
16648                     nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST))
16649                         goto free_msg;
16650
16651                 if (wakeup->tcp_nomoretokens &&
16652                     nla_put_flag(msg,
16653                                  NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS))
16654                         goto free_msg;
16655
16656                 if (wakeup->packet) {
16657                         u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211;
16658                         u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN;
16659
16660                         if (!wakeup->packet_80211) {
16661                                 pkt_attr =
16662                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023;
16663                                 len_attr =
16664                                         NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN;
16665                         }
16666
16667                         if (wakeup->packet_len &&
16668                             nla_put_u32(msg, len_attr, wakeup->packet_len))
16669                                 goto free_msg;
16670
16671                         if (nla_put(msg, pkt_attr, wakeup->packet_present_len,
16672                                     wakeup->packet))
16673                                 goto free_msg;
16674                 }
16675
16676                 if (wakeup->net_detect &&
16677                     cfg80211_net_detect_results(msg, wakeup))
16678                                 goto free_msg;
16679
16680                 nla_nest_end(msg, reasons);
16681         }
16682
16683         genlmsg_end(msg, hdr);
16684
16685         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16686                                 NL80211_MCGRP_MLME, gfp);
16687         return;
16688
16689  free_msg:
16690         nlmsg_free(msg);
16691 }
16692 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup);
16693 #endif
16694
16695 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer,
16696                                 enum nl80211_tdls_operation oper,
16697                                 u16 reason_code, gfp_t gfp)
16698 {
16699         struct wireless_dev *wdev = dev->ieee80211_ptr;
16700         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16701         struct sk_buff *msg;
16702         void *hdr;
16703
16704         trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper,
16705                                          reason_code);
16706
16707         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16708         if (!msg)
16709                 return;
16710
16711         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER);
16712         if (!hdr) {
16713                 nlmsg_free(msg);
16714                 return;
16715         }
16716
16717         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16718             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16719             nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) ||
16720             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) ||
16721             (reason_code > 0 &&
16722              nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code)))
16723                 goto nla_put_failure;
16724
16725         genlmsg_end(msg, hdr);
16726
16727         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16728                                 NL80211_MCGRP_MLME, gfp);
16729         return;
16730
16731  nla_put_failure:
16732         nlmsg_free(msg);
16733 }
16734 EXPORT_SYMBOL(cfg80211_tdls_oper_request);
16735
16736 static int nl80211_netlink_notify(struct notifier_block * nb,
16737                                   unsigned long state,
16738                                   void *_notify)
16739 {
16740         struct netlink_notify *notify = _notify;
16741         struct cfg80211_registered_device *rdev;
16742         struct wireless_dev *wdev;
16743         struct cfg80211_beacon_registration *reg, *tmp;
16744
16745         if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC)
16746                 return NOTIFY_DONE;
16747
16748         rcu_read_lock();
16749
16750         list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) {
16751                 struct cfg80211_sched_scan_request *sched_scan_req;
16752
16753                 list_for_each_entry_rcu(sched_scan_req,
16754                                         &rdev->sched_scan_req_list,
16755                                         list) {
16756                         if (sched_scan_req->owner_nlportid == notify->portid) {
16757                                 sched_scan_req->nl_owner_dead = true;
16758                                 schedule_work(&rdev->sched_scan_stop_wk);
16759                         }
16760                 }
16761
16762                 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) {
16763                         cfg80211_mlme_unregister_socket(wdev, notify->portid);
16764
16765                         if (wdev->owner_nlportid == notify->portid) {
16766                                 wdev->nl_owner_dead = true;
16767                                 schedule_work(&rdev->destroy_work);
16768                         } else if (wdev->conn_owner_nlportid == notify->portid) {
16769                                 schedule_work(&wdev->disconnect_wk);
16770                         }
16771
16772                         cfg80211_release_pmsr(wdev, notify->portid);
16773                 }
16774
16775                 spin_lock_bh(&rdev->beacon_registrations_lock);
16776                 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations,
16777                                          list) {
16778                         if (reg->nlportid == notify->portid) {
16779                                 list_del(&reg->list);
16780                                 kfree(reg);
16781                                 break;
16782                         }
16783                 }
16784                 spin_unlock_bh(&rdev->beacon_registrations_lock);
16785         }
16786
16787         rcu_read_unlock();
16788
16789         /*
16790          * It is possible that the user space process that is controlling the
16791          * indoor setting disappeared, so notify the regulatory core.
16792          */
16793         regulatory_netlink_notify(notify->portid);
16794         return NOTIFY_OK;
16795 }
16796
16797 static struct notifier_block nl80211_netlink_notifier = {
16798         .notifier_call = nl80211_netlink_notify,
16799 };
16800
16801 void cfg80211_ft_event(struct net_device *netdev,
16802                        struct cfg80211_ft_event_params *ft_event)
16803 {
16804         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16805         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16806         struct sk_buff *msg;
16807         void *hdr;
16808
16809         trace_cfg80211_ft_event(wiphy, netdev, ft_event);
16810
16811         if (!ft_event->target_ap)
16812                 return;
16813
16814         msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len,
16815                         GFP_KERNEL);
16816         if (!msg)
16817                 return;
16818
16819         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT);
16820         if (!hdr)
16821                 goto out;
16822
16823         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16824             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16825             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap))
16826                 goto out;
16827
16828         if (ft_event->ies &&
16829             nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies))
16830                 goto out;
16831         if (ft_event->ric_ies &&
16832             nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len,
16833                     ft_event->ric_ies))
16834                 goto out;
16835
16836         genlmsg_end(msg, hdr);
16837
16838         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16839                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16840         return;
16841  out:
16842         nlmsg_free(msg);
16843 }
16844 EXPORT_SYMBOL(cfg80211_ft_event);
16845
16846 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp)
16847 {
16848         struct cfg80211_registered_device *rdev;
16849         struct sk_buff *msg;
16850         void *hdr;
16851         u32 nlportid;
16852
16853         rdev = wiphy_to_rdev(wdev->wiphy);
16854         if (!rdev->crit_proto_nlportid)
16855                 return;
16856
16857         nlportid = rdev->crit_proto_nlportid;
16858         rdev->crit_proto_nlportid = 0;
16859
16860         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16861         if (!msg)
16862                 return;
16863
16864         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP);
16865         if (!hdr)
16866                 goto nla_put_failure;
16867
16868         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16869             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16870                               NL80211_ATTR_PAD))
16871                 goto nla_put_failure;
16872
16873         genlmsg_end(msg, hdr);
16874
16875         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid);
16876         return;
16877
16878  nla_put_failure:
16879         nlmsg_free(msg);
16880 }
16881 EXPORT_SYMBOL(cfg80211_crit_proto_stopped);
16882
16883 void nl80211_send_ap_stopped(struct wireless_dev *wdev)
16884 {
16885         struct wiphy *wiphy = wdev->wiphy;
16886         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16887         struct sk_buff *msg;
16888         void *hdr;
16889
16890         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
16891         if (!msg)
16892                 return;
16893
16894         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP);
16895         if (!hdr)
16896                 goto out;
16897
16898         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16899             nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) ||
16900             nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev),
16901                               NL80211_ATTR_PAD))
16902                 goto out;
16903
16904         genlmsg_end(msg, hdr);
16905
16906         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0,
16907                                 NL80211_MCGRP_MLME, GFP_KERNEL);
16908         return;
16909  out:
16910         nlmsg_free(msg);
16911 }
16912
16913 int cfg80211_external_auth_request(struct net_device *dev,
16914                                    struct cfg80211_external_auth_params *params,
16915                                    gfp_t gfp)
16916 {
16917         struct wireless_dev *wdev = dev->ieee80211_ptr;
16918         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
16919         struct sk_buff *msg;
16920         void *hdr;
16921
16922         if (!wdev->conn_owner_nlportid)
16923                 return -EINVAL;
16924
16925         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16926         if (!msg)
16927                 return -ENOMEM;
16928
16929         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH);
16930         if (!hdr)
16931                 goto nla_put_failure;
16932
16933         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16934             nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) ||
16935             nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) ||
16936             nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION,
16937                         params->action) ||
16938             nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) ||
16939             nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len,
16940                     params->ssid.ssid))
16941                 goto nla_put_failure;
16942
16943         genlmsg_end(msg, hdr);
16944         genlmsg_unicast(wiphy_net(&rdev->wiphy), msg,
16945                         wdev->conn_owner_nlportid);
16946         return 0;
16947
16948  nla_put_failure:
16949         nlmsg_free(msg);
16950         return -ENOBUFS;
16951 }
16952 EXPORT_SYMBOL(cfg80211_external_auth_request);
16953
16954 void cfg80211_update_owe_info_event(struct net_device *netdev,
16955                                     struct cfg80211_update_owe_info *owe_info,
16956                                     gfp_t gfp)
16957 {
16958         struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy;
16959         struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
16960         struct sk_buff *msg;
16961         void *hdr;
16962
16963         trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info);
16964
16965         msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp);
16966         if (!msg)
16967                 return;
16968
16969         hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO);
16970         if (!hdr)
16971                 goto nla_put_failure;
16972
16973         if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) ||
16974             nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) ||
16975             nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer))
16976                 goto nla_put_failure;
16977
16978         if (!owe_info->ie_len ||
16979             nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie))
16980                 goto nla_put_failure;
16981
16982         genlmsg_end(msg, hdr);
16983
16984         genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0,
16985                                 NL80211_MCGRP_MLME, gfp);
16986         return;
16987
16988 nla_put_failure:
16989         genlmsg_cancel(msg, hdr);
16990         nlmsg_free(msg);
16991 }
16992 EXPORT_SYMBOL(cfg80211_update_owe_info_event);
16993
16994 /* initialisation/exit functions */
16995
16996 int __init nl80211_init(void)
16997 {
16998         int err;
16999
17000         err = genl_register_family(&nl80211_fam);
17001         if (err)
17002                 return err;
17003
17004         err = netlink_register_notifier(&nl80211_netlink_notifier);
17005         if (err)
17006                 goto err_out;
17007
17008         return 0;
17009  err_out:
17010         genl_unregister_family(&nl80211_fam);
17011         return err;
17012 }
17013
17014 void nl80211_exit(void)
17015 {
17016         netlink_unregister_notifier(&nl80211_netlink_notifier);
17017         genl_unregister_family(&nl80211_fam);
17018 }