1 /* 2 * This is the new netlink-based wireless configuration interface. 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * Copyright 2013-2014 Intel Mobile Communications GmbH 6 * Copyright 2015-2017 Intel Deutschland GmbH 7 */ 8 9 #include <linux/if.h> 10 #include <linux/module.h> 11 #include <linux/err.h> 12 #include <linux/slab.h> 13 #include <linux/list.h> 14 #include <linux/if_ether.h> 15 #include <linux/ieee80211.h> 16 #include <linux/nl80211.h> 17 #include <linux/rtnetlink.h> 18 #include <linux/netlink.h> 19 #include <linux/nospec.h> 20 #include <linux/etherdevice.h> 21 #include <net/net_namespace.h> 22 #include <net/genetlink.h> 23 #include <net/cfg80211.h> 24 #include <net/sock.h> 25 #include <net/inet_connection_sock.h> 26 #include "core.h" 27 #include "nl80211.h" 28 #include "reg.h" 29 #include "rdev-ops.h" 30 31 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 32 struct genl_info *info, 33 struct cfg80211_crypto_settings *settings, 34 int cipher_limit); 35 36 /* the netlink family */ 37 static struct genl_family nl80211_fam; 38 39 /* multicast groups */ 40 enum nl80211_multicast_groups { 41 NL80211_MCGRP_CONFIG, 42 NL80211_MCGRP_SCAN, 43 NL80211_MCGRP_REGULATORY, 44 NL80211_MCGRP_MLME, 45 NL80211_MCGRP_VENDOR, 46 NL80211_MCGRP_NAN, 47 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 48 }; 49 50 static const struct genl_multicast_group nl80211_mcgrps[] = { 51 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG }, 52 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN }, 53 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, 54 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, 55 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, 56 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN }, 57 #ifdef CONFIG_NL80211_TESTMODE 58 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } 59 #endif 60 }; 61 62 /* returns ERR_PTR values */ 63 static struct wireless_dev * 64 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 65 { 66 struct cfg80211_registered_device *rdev; 67 struct wireless_dev *result = NULL; 68 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 69 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 70 u64 wdev_id; 71 int wiphy_idx = -1; 72 int ifidx = -1; 73 74 ASSERT_RTNL(); 75 76 if (!have_ifidx && !have_wdev_id) 77 return ERR_PTR(-EINVAL); 78 79 if (have_ifidx) 80 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 81 if (have_wdev_id) { 82 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 83 wiphy_idx = wdev_id >> 32; 84 } 85 86 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 87 struct wireless_dev *wdev; 88 89 if (wiphy_net(&rdev->wiphy) != netns) 90 continue; 91 92 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 93 continue; 94 95 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 96 if (have_ifidx && wdev->netdev && 97 wdev->netdev->ifindex == ifidx) { 98 result = wdev; 99 break; 100 } 101 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 102 result = wdev; 103 break; 104 } 105 } 106 107 if (result) 108 break; 109 } 110 111 if (result) 112 return result; 113 return ERR_PTR(-ENODEV); 114 } 115 116 static struct cfg80211_registered_device * 117 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 118 { 119 struct cfg80211_registered_device *rdev = NULL, *tmp; 120 struct net_device *netdev; 121 122 ASSERT_RTNL(); 123 124 if (!attrs[NL80211_ATTR_WIPHY] && 125 !attrs[NL80211_ATTR_IFINDEX] && 126 !attrs[NL80211_ATTR_WDEV]) 127 return ERR_PTR(-EINVAL); 128 129 if (attrs[NL80211_ATTR_WIPHY]) 130 rdev = cfg80211_rdev_by_wiphy_idx( 131 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 132 133 if (attrs[NL80211_ATTR_WDEV]) { 134 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 135 struct wireless_dev *wdev; 136 bool found = false; 137 138 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 139 if (tmp) { 140 /* make sure wdev exists */ 141 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) { 142 if (wdev->identifier != (u32)wdev_id) 143 continue; 144 found = true; 145 break; 146 } 147 148 if (!found) 149 tmp = NULL; 150 151 if (rdev && tmp != rdev) 152 return ERR_PTR(-EINVAL); 153 rdev = tmp; 154 } 155 } 156 157 if (attrs[NL80211_ATTR_IFINDEX]) { 158 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 159 160 netdev = __dev_get_by_index(netns, ifindex); 161 if (netdev) { 162 if (netdev->ieee80211_ptr) 163 tmp = wiphy_to_rdev( 164 netdev->ieee80211_ptr->wiphy); 165 else 166 tmp = NULL; 167 168 /* not wireless device -- return error */ 169 if (!tmp) 170 return ERR_PTR(-EINVAL); 171 172 /* mismatch -- return error */ 173 if (rdev && tmp != rdev) 174 return ERR_PTR(-EINVAL); 175 176 rdev = tmp; 177 } 178 } 179 180 if (!rdev) 181 return ERR_PTR(-ENODEV); 182 183 if (netns != wiphy_net(&rdev->wiphy)) 184 return ERR_PTR(-ENODEV); 185 186 return rdev; 187 } 188 189 /* 190 * This function returns a pointer to the driver 191 * that the genl_info item that is passed refers to. 192 * 193 * The result of this can be a PTR_ERR and hence must 194 * be checked with IS_ERR() for errors. 195 */ 196 static struct cfg80211_registered_device * 197 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 198 { 199 return __cfg80211_rdev_from_attrs(netns, info->attrs); 200 } 201 202 /* policy for the attributes */ 203 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 204 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 205 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 206 .len = 20-1 }, 207 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 208 209 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 210 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 211 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 212 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 213 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 214 215 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 216 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 217 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 218 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 219 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 220 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 221 222 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 223 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 224 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 225 226 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 227 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 228 229 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 230 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 231 .len = WLAN_MAX_KEY_LEN }, 232 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 233 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 234 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 235 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 236 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 237 238 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 239 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 240 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 241 .len = IEEE80211_MAX_DATA_LEN }, 242 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 243 .len = IEEE80211_MAX_DATA_LEN }, 244 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 245 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 246 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 247 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 248 .len = NL80211_MAX_SUPP_RATES }, 249 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 250 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 251 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 252 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 253 .len = IEEE80211_MAX_MESH_ID_LEN }, 254 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 255 256 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 257 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 258 259 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 260 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 261 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 262 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 263 .len = NL80211_MAX_SUPP_RATES }, 264 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 265 266 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 267 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 268 269 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 270 271 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 272 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 273 .len = IEEE80211_MAX_DATA_LEN }, 274 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 275 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 276 277 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 278 .len = IEEE80211_MAX_SSID_LEN }, 279 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 280 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 281 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 282 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 283 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 284 [NL80211_ATTR_STA_FLAGS2] = { 285 .len = sizeof(struct nl80211_sta_flag_update), 286 }, 287 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 288 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 289 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 290 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 291 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 292 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 293 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 294 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 295 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN }, 296 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 297 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 298 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 299 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 300 .len = IEEE80211_MAX_DATA_LEN }, 301 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 302 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 303 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 304 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 305 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 306 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 307 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 308 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 309 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 310 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 311 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 312 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 313 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 314 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 315 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 316 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 317 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 318 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 319 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 320 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 321 .len = IEEE80211_MAX_DATA_LEN }, 322 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 323 .len = IEEE80211_MAX_DATA_LEN }, 324 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 325 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 326 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 327 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 328 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 329 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 330 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 331 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 332 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 333 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 334 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 335 .len = IEEE80211_MAX_DATA_LEN }, 336 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 337 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 338 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 339 .len = NL80211_HT_CAPABILITY_LEN 340 }, 341 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 342 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 343 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 344 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 345 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 346 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, }, 347 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 348 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 349 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 350 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 351 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 }, 352 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 353 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 354 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 355 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 356 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 357 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 358 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 359 .len = NL80211_VHT_CAPABILITY_LEN, 360 }, 361 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 362 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 363 .len = IEEE80211_MAX_DATA_LEN }, 364 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 365 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 366 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 367 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 368 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY }, 369 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY }, 370 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 371 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 372 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 373 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 374 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 375 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 376 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 377 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY, 378 .len = IEEE80211_QOS_MAP_LEN_MAX }, 379 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN }, 380 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 381 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 382 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 383 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 384 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 385 [NL80211_ATTR_TSID] = { .type = NLA_U8 }, 386 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 }, 387 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 388 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 389 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN }, 390 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 391 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 392 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 393 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, 394 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG }, 395 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED }, 396 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 }, 397 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = { 398 .len = VHT_MUMIMO_GROUPS_DATA_LEN 399 }, 400 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN }, 401 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 }, 402 [NL80211_ATTR_BANDS] = { .type = NLA_U32 }, 403 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED }, 404 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY, 405 .len = FILS_MAX_KEK_LEN }, 406 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN }, 407 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, }, 408 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN }, 409 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 }, 410 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = { 411 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 412 }, 413 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 }, 414 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY, 415 .len = FILS_ERP_MAX_USERNAME_LEN }, 416 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY, 417 .len = FILS_ERP_MAX_REALM_LEN }, 418 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 }, 419 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY, 420 .len = FILS_ERP_MAX_RRK_LEN }, 421 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 }, 422 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN }, 423 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG }, 424 }; 425 426 /* policy for the key attributes */ 427 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 428 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 429 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 430 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 431 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 432 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 433 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 434 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 435 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 436 }; 437 438 /* policy for the key default flags */ 439 static const struct nla_policy 440 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 441 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 442 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 443 }; 444 445 #ifdef CONFIG_PM 446 /* policy for WoWLAN attributes */ 447 static const struct nla_policy 448 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 449 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 450 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 451 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 452 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 453 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 454 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 455 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 456 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 457 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 458 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 459 }; 460 461 static const struct nla_policy 462 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 463 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 464 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 465 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 466 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 467 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 468 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 469 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 470 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 471 }, 472 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 473 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 474 }, 475 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 476 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 477 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 478 }; 479 #endif /* CONFIG_PM */ 480 481 /* policy for coalesce rule attributes */ 482 static const struct nla_policy 483 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 484 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 485 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 486 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 487 }; 488 489 /* policy for GTK rekey offload attributes */ 490 static const struct nla_policy 491 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 492 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 493 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 494 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 495 }; 496 497 static const struct nla_policy 498 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 499 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 500 .len = IEEE80211_MAX_SSID_LEN }, 501 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN }, 502 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 503 }; 504 505 static const struct nla_policy 506 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = { 507 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 }, 508 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 }, 509 }; 510 511 static const struct nla_policy 512 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = { 513 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG }, 514 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 }, 515 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = { 516 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 517 }, 518 }; 519 520 /* policy for NAN function attributes */ 521 static const struct nla_policy 522 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = { 523 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 }, 524 [NL80211_NAN_FUNC_SERVICE_ID] = { 525 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN }, 526 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 }, 527 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG }, 528 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG }, 529 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 }, 530 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 }, 531 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN }, 532 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG }, 533 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 }, 534 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY, 535 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN }, 536 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED }, 537 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED }, 538 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED }, 539 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 }, 540 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 }, 541 }; 542 543 /* policy for Service Response Filter attributes */ 544 static const struct nla_policy 545 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = { 546 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG }, 547 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY, 548 .len = NL80211_NAN_FUNC_SRF_MAX_LEN }, 549 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 }, 550 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED }, 551 }; 552 553 /* policy for packet pattern attributes */ 554 static const struct nla_policy 555 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = { 556 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, }, 557 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, }, 558 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 }, 559 }; 560 561 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 562 struct netlink_callback *cb, 563 struct cfg80211_registered_device **rdev, 564 struct wireless_dev **wdev) 565 { 566 int err; 567 568 if (!cb->args[0]) { 569 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 570 genl_family_attrbuf(&nl80211_fam), 571 nl80211_fam.maxattr, nl80211_policy, NULL); 572 if (err) 573 return err; 574 575 *wdev = __cfg80211_wdev_from_attrs( 576 sock_net(skb->sk), 577 genl_family_attrbuf(&nl80211_fam)); 578 if (IS_ERR(*wdev)) 579 return PTR_ERR(*wdev); 580 *rdev = wiphy_to_rdev((*wdev)->wiphy); 581 /* 0 is the first index - add 1 to parse only once */ 582 cb->args[0] = (*rdev)->wiphy_idx + 1; 583 cb->args[1] = (*wdev)->identifier; 584 } else { 585 /* subtract the 1 again here */ 586 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 587 struct wireless_dev *tmp; 588 589 if (!wiphy) 590 return -ENODEV; 591 *rdev = wiphy_to_rdev(wiphy); 592 *wdev = NULL; 593 594 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) { 595 if (tmp->identifier == cb->args[1]) { 596 *wdev = tmp; 597 break; 598 } 599 } 600 601 if (!*wdev) 602 return -ENODEV; 603 } 604 605 return 0; 606 } 607 608 /* IE validation */ 609 static bool is_valid_ie_attr(const struct nlattr *attr) 610 { 611 const u8 *pos; 612 int len; 613 614 if (!attr) 615 return true; 616 617 pos = nla_data(attr); 618 len = nla_len(attr); 619 620 while (len) { 621 u8 elemlen; 622 623 if (len < 2) 624 return false; 625 len -= 2; 626 627 elemlen = pos[1]; 628 if (elemlen > len) 629 return false; 630 631 len -= elemlen; 632 pos += 2 + elemlen; 633 } 634 635 return true; 636 } 637 638 /* message building helper */ 639 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 640 int flags, u8 cmd) 641 { 642 /* since there is no private header just add the generic one */ 643 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 644 } 645 646 static int nl80211_msg_put_channel(struct sk_buff *msg, 647 struct ieee80211_channel *chan, 648 bool large) 649 { 650 /* Some channels must be completely excluded from the 651 * list to protect old user-space tools from breaking 652 */ 653 if (!large && chan->flags & 654 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 655 return 0; 656 657 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 658 chan->center_freq)) 659 goto nla_put_failure; 660 661 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 662 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 663 goto nla_put_failure; 664 if (chan->flags & IEEE80211_CHAN_NO_IR) { 665 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 666 goto nla_put_failure; 667 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 668 goto nla_put_failure; 669 } 670 if (chan->flags & IEEE80211_CHAN_RADAR) { 671 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 672 goto nla_put_failure; 673 if (large) { 674 u32 time; 675 676 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 677 678 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 679 chan->dfs_state)) 680 goto nla_put_failure; 681 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 682 time)) 683 goto nla_put_failure; 684 if (nla_put_u32(msg, 685 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 686 chan->dfs_cac_ms)) 687 goto nla_put_failure; 688 } 689 } 690 691 if (large) { 692 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 693 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 694 goto nla_put_failure; 695 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 696 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 697 goto nla_put_failure; 698 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 699 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 700 goto nla_put_failure; 701 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 702 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 703 goto nla_put_failure; 704 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 705 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 706 goto nla_put_failure; 707 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) && 708 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT)) 709 goto nla_put_failure; 710 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 711 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 712 goto nla_put_failure; 713 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 714 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 715 goto nla_put_failure; 716 } 717 718 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 719 DBM_TO_MBM(chan->max_power))) 720 goto nla_put_failure; 721 722 return 0; 723 724 nla_put_failure: 725 return -ENOBUFS; 726 } 727 728 /* netlink command implementations */ 729 730 struct key_parse { 731 struct key_params p; 732 int idx; 733 int type; 734 bool def, defmgmt; 735 bool def_uni, def_multi; 736 }; 737 738 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key, 739 struct key_parse *k) 740 { 741 struct nlattr *tb[NL80211_KEY_MAX + 1]; 742 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 743 nl80211_key_policy, info->extack); 744 if (err) 745 return err; 746 747 k->def = !!tb[NL80211_KEY_DEFAULT]; 748 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 749 750 if (k->def) { 751 k->def_uni = true; 752 k->def_multi = true; 753 } 754 if (k->defmgmt) 755 k->def_multi = true; 756 757 if (tb[NL80211_KEY_IDX]) 758 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 759 760 if (tb[NL80211_KEY_DATA]) { 761 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 762 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 763 } 764 765 if (tb[NL80211_KEY_SEQ]) { 766 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 767 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 768 } 769 770 if (tb[NL80211_KEY_CIPHER]) 771 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 772 773 if (tb[NL80211_KEY_TYPE]) { 774 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 775 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 776 return genl_err_attr(info, -EINVAL, 777 tb[NL80211_KEY_TYPE]); 778 } 779 780 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 781 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 782 783 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 784 tb[NL80211_KEY_DEFAULT_TYPES], 785 nl80211_key_default_policy, 786 info->extack); 787 if (err) 788 return err; 789 790 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 791 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 792 } 793 794 return 0; 795 } 796 797 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 798 { 799 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 800 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 801 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 802 } 803 804 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 805 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 806 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 807 } 808 809 if (info->attrs[NL80211_ATTR_KEY_IDX]) 810 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 811 812 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 813 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 814 815 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 816 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 817 818 if (k->def) { 819 k->def_uni = true; 820 k->def_multi = true; 821 } 822 if (k->defmgmt) 823 k->def_multi = true; 824 825 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 826 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 827 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) { 828 GENL_SET_ERR_MSG(info, "key type out of range"); 829 return -EINVAL; 830 } 831 } 832 833 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 834 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 835 int err = nla_parse_nested(kdt, 836 NUM_NL80211_KEY_DEFAULT_TYPES - 1, 837 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 838 nl80211_key_default_policy, 839 info->extack); 840 if (err) 841 return err; 842 843 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 844 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 845 } 846 847 return 0; 848 } 849 850 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 851 { 852 int err; 853 854 memset(k, 0, sizeof(*k)); 855 k->idx = -1; 856 k->type = -1; 857 858 if (info->attrs[NL80211_ATTR_KEY]) 859 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k); 860 else 861 err = nl80211_parse_key_old(info, k); 862 863 if (err) 864 return err; 865 866 if (k->def && k->defmgmt) { 867 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid"); 868 return -EINVAL; 869 } 870 871 if (k->defmgmt) { 872 if (k->def_uni || !k->def_multi) { 873 GENL_SET_ERR_MSG(info, "defmgmt key must be mcast"); 874 return -EINVAL; 875 } 876 } 877 878 if (k->idx != -1) { 879 if (k->defmgmt) { 880 if (k->idx < 4 || k->idx > 5) { 881 GENL_SET_ERR_MSG(info, 882 "defmgmt key idx not 4 or 5"); 883 return -EINVAL; 884 } 885 } else if (k->def) { 886 if (k->idx < 0 || k->idx > 3) { 887 GENL_SET_ERR_MSG(info, "def key idx not 0-3"); 888 return -EINVAL; 889 } 890 } else { 891 if (k->idx < 0 || k->idx > 5) { 892 GENL_SET_ERR_MSG(info, "key idx not 0-5"); 893 return -EINVAL; 894 } 895 } 896 } 897 898 return 0; 899 } 900 901 static struct cfg80211_cached_keys * 902 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 903 struct genl_info *info, bool *no_ht) 904 { 905 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS]; 906 struct key_parse parse; 907 struct nlattr *key; 908 struct cfg80211_cached_keys *result; 909 int rem, err, def = 0; 910 bool have_key = false; 911 912 nla_for_each_nested(key, keys, rem) { 913 have_key = true; 914 break; 915 } 916 917 if (!have_key) 918 return NULL; 919 920 result = kzalloc(sizeof(*result), GFP_KERNEL); 921 if (!result) 922 return ERR_PTR(-ENOMEM); 923 924 result->def = -1; 925 926 nla_for_each_nested(key, keys, rem) { 927 memset(&parse, 0, sizeof(parse)); 928 parse.idx = -1; 929 930 err = nl80211_parse_key_new(info, key, &parse); 931 if (err) 932 goto error; 933 err = -EINVAL; 934 if (!parse.p.key) 935 goto error; 936 if (parse.idx < 0 || parse.idx > 3) { 937 GENL_SET_ERR_MSG(info, "key index out of range [0-3]"); 938 goto error; 939 } 940 if (parse.def) { 941 if (def) { 942 GENL_SET_ERR_MSG(info, 943 "only one key can be default"); 944 goto error; 945 } 946 def = 1; 947 result->def = parse.idx; 948 if (!parse.def_uni || !parse.def_multi) 949 goto error; 950 } else if (parse.defmgmt) 951 goto error; 952 err = cfg80211_validate_key_settings(rdev, &parse.p, 953 parse.idx, false, NULL); 954 if (err) 955 goto error; 956 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 && 957 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) { 958 GENL_SET_ERR_MSG(info, "connect key must be WEP"); 959 err = -EINVAL; 960 goto error; 961 } 962 result->params[parse.idx].cipher = parse.p.cipher; 963 result->params[parse.idx].key_len = parse.p.key_len; 964 result->params[parse.idx].key = result->data[parse.idx]; 965 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 966 967 /* must be WEP key if we got here */ 968 if (no_ht) 969 *no_ht = true; 970 } 971 972 if (result->def < 0) { 973 err = -EINVAL; 974 GENL_SET_ERR_MSG(info, "need a default/TX key"); 975 goto error; 976 } 977 978 return result; 979 error: 980 kfree(result); 981 return ERR_PTR(err); 982 } 983 984 static int nl80211_key_allowed(struct wireless_dev *wdev) 985 { 986 ASSERT_WDEV_LOCK(wdev); 987 988 switch (wdev->iftype) { 989 case NL80211_IFTYPE_AP: 990 case NL80211_IFTYPE_AP_VLAN: 991 case NL80211_IFTYPE_P2P_GO: 992 case NL80211_IFTYPE_MESH_POINT: 993 break; 994 case NL80211_IFTYPE_ADHOC: 995 case NL80211_IFTYPE_STATION: 996 case NL80211_IFTYPE_P2P_CLIENT: 997 if (!wdev->current_bss) 998 return -ENOLINK; 999 break; 1000 case NL80211_IFTYPE_UNSPECIFIED: 1001 case NL80211_IFTYPE_OCB: 1002 case NL80211_IFTYPE_MONITOR: 1003 case NL80211_IFTYPE_NAN: 1004 case NL80211_IFTYPE_P2P_DEVICE: 1005 case NL80211_IFTYPE_WDS: 1006 case NUM_NL80211_IFTYPES: 1007 return -EINVAL; 1008 } 1009 1010 return 0; 1011 } 1012 1013 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 1014 struct nlattr *tb) 1015 { 1016 struct ieee80211_channel *chan; 1017 1018 if (tb == NULL) 1019 return NULL; 1020 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 1021 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 1022 return NULL; 1023 return chan; 1024 } 1025 1026 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 1027 { 1028 struct nlattr *nl_modes = nla_nest_start(msg, attr); 1029 int i; 1030 1031 if (!nl_modes) 1032 goto nla_put_failure; 1033 1034 i = 0; 1035 while (ifmodes) { 1036 if ((ifmodes & 1) && nla_put_flag(msg, i)) 1037 goto nla_put_failure; 1038 ifmodes >>= 1; 1039 i++; 1040 } 1041 1042 nla_nest_end(msg, nl_modes); 1043 return 0; 1044 1045 nla_put_failure: 1046 return -ENOBUFS; 1047 } 1048 1049 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 1050 struct sk_buff *msg, 1051 bool large) 1052 { 1053 struct nlattr *nl_combis; 1054 int i, j; 1055 1056 nl_combis = nla_nest_start(msg, 1057 NL80211_ATTR_INTERFACE_COMBINATIONS); 1058 if (!nl_combis) 1059 goto nla_put_failure; 1060 1061 for (i = 0; i < wiphy->n_iface_combinations; i++) { 1062 const struct ieee80211_iface_combination *c; 1063 struct nlattr *nl_combi, *nl_limits; 1064 1065 c = &wiphy->iface_combinations[i]; 1066 1067 nl_combi = nla_nest_start(msg, i + 1); 1068 if (!nl_combi) 1069 goto nla_put_failure; 1070 1071 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 1072 if (!nl_limits) 1073 goto nla_put_failure; 1074 1075 for (j = 0; j < c->n_limits; j++) { 1076 struct nlattr *nl_limit; 1077 1078 nl_limit = nla_nest_start(msg, j + 1); 1079 if (!nl_limit) 1080 goto nla_put_failure; 1081 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 1082 c->limits[j].max)) 1083 goto nla_put_failure; 1084 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 1085 c->limits[j].types)) 1086 goto nla_put_failure; 1087 nla_nest_end(msg, nl_limit); 1088 } 1089 1090 nla_nest_end(msg, nl_limits); 1091 1092 if (c->beacon_int_infra_match && 1093 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 1094 goto nla_put_failure; 1095 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 1096 c->num_different_channels) || 1097 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 1098 c->max_interfaces)) 1099 goto nla_put_failure; 1100 if (large && 1101 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 1102 c->radar_detect_widths) || 1103 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 1104 c->radar_detect_regions))) 1105 goto nla_put_failure; 1106 if (c->beacon_int_min_gcd && 1107 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD, 1108 c->beacon_int_min_gcd)) 1109 goto nla_put_failure; 1110 1111 nla_nest_end(msg, nl_combi); 1112 } 1113 1114 nla_nest_end(msg, nl_combis); 1115 1116 return 0; 1117 nla_put_failure: 1118 return -ENOBUFS; 1119 } 1120 1121 #ifdef CONFIG_PM 1122 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1123 struct sk_buff *msg) 1124 { 1125 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1126 struct nlattr *nl_tcp; 1127 1128 if (!tcp) 1129 return 0; 1130 1131 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1132 if (!nl_tcp) 1133 return -ENOBUFS; 1134 1135 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1136 tcp->data_payload_max)) 1137 return -ENOBUFS; 1138 1139 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1140 tcp->data_payload_max)) 1141 return -ENOBUFS; 1142 1143 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1144 return -ENOBUFS; 1145 1146 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1147 sizeof(*tcp->tok), tcp->tok)) 1148 return -ENOBUFS; 1149 1150 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1151 tcp->data_interval_max)) 1152 return -ENOBUFS; 1153 1154 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1155 tcp->wake_payload_max)) 1156 return -ENOBUFS; 1157 1158 nla_nest_end(msg, nl_tcp); 1159 return 0; 1160 } 1161 1162 static int nl80211_send_wowlan(struct sk_buff *msg, 1163 struct cfg80211_registered_device *rdev, 1164 bool large) 1165 { 1166 struct nlattr *nl_wowlan; 1167 1168 if (!rdev->wiphy.wowlan) 1169 return 0; 1170 1171 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1172 if (!nl_wowlan) 1173 return -ENOBUFS; 1174 1175 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1176 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1177 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1178 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1179 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1180 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1181 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1182 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1183 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1184 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1185 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1186 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1187 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1188 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1189 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1190 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1191 return -ENOBUFS; 1192 1193 if (rdev->wiphy.wowlan->n_patterns) { 1194 struct nl80211_pattern_support pat = { 1195 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1196 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1197 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1198 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1199 }; 1200 1201 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1202 sizeof(pat), &pat)) 1203 return -ENOBUFS; 1204 } 1205 1206 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1207 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1208 rdev->wiphy.wowlan->max_nd_match_sets)) 1209 return -ENOBUFS; 1210 1211 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1212 return -ENOBUFS; 1213 1214 nla_nest_end(msg, nl_wowlan); 1215 1216 return 0; 1217 } 1218 #endif 1219 1220 static int nl80211_send_coalesce(struct sk_buff *msg, 1221 struct cfg80211_registered_device *rdev) 1222 { 1223 struct nl80211_coalesce_rule_support rule; 1224 1225 if (!rdev->wiphy.coalesce) 1226 return 0; 1227 1228 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1229 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1230 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1231 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1232 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1233 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1234 1235 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1236 return -ENOBUFS; 1237 1238 return 0; 1239 } 1240 1241 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1242 struct ieee80211_supported_band *sband) 1243 { 1244 struct nlattr *nl_rates, *nl_rate; 1245 struct ieee80211_rate *rate; 1246 int i; 1247 1248 /* add HT info */ 1249 if (sband->ht_cap.ht_supported && 1250 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1251 sizeof(sband->ht_cap.mcs), 1252 &sband->ht_cap.mcs) || 1253 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1254 sband->ht_cap.cap) || 1255 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1256 sband->ht_cap.ampdu_factor) || 1257 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1258 sband->ht_cap.ampdu_density))) 1259 return -ENOBUFS; 1260 1261 /* add VHT info */ 1262 if (sband->vht_cap.vht_supported && 1263 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1264 sizeof(sband->vht_cap.vht_mcs), 1265 &sband->vht_cap.vht_mcs) || 1266 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1267 sband->vht_cap.cap))) 1268 return -ENOBUFS; 1269 1270 /* add bitrates */ 1271 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1272 if (!nl_rates) 1273 return -ENOBUFS; 1274 1275 for (i = 0; i < sband->n_bitrates; i++) { 1276 nl_rate = nla_nest_start(msg, i); 1277 if (!nl_rate) 1278 return -ENOBUFS; 1279 1280 rate = &sband->bitrates[i]; 1281 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1282 rate->bitrate)) 1283 return -ENOBUFS; 1284 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1285 nla_put_flag(msg, 1286 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1287 return -ENOBUFS; 1288 1289 nla_nest_end(msg, nl_rate); 1290 } 1291 1292 nla_nest_end(msg, nl_rates); 1293 1294 return 0; 1295 } 1296 1297 static int 1298 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1299 const struct ieee80211_txrx_stypes *mgmt_stypes) 1300 { 1301 u16 stypes; 1302 struct nlattr *nl_ftypes, *nl_ifs; 1303 enum nl80211_iftype ift; 1304 int i; 1305 1306 if (!mgmt_stypes) 1307 return 0; 1308 1309 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1310 if (!nl_ifs) 1311 return -ENOBUFS; 1312 1313 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1314 nl_ftypes = nla_nest_start(msg, ift); 1315 if (!nl_ftypes) 1316 return -ENOBUFS; 1317 i = 0; 1318 stypes = mgmt_stypes[ift].tx; 1319 while (stypes) { 1320 if ((stypes & 1) && 1321 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1322 (i << 4) | IEEE80211_FTYPE_MGMT)) 1323 return -ENOBUFS; 1324 stypes >>= 1; 1325 i++; 1326 } 1327 nla_nest_end(msg, nl_ftypes); 1328 } 1329 1330 nla_nest_end(msg, nl_ifs); 1331 1332 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1333 if (!nl_ifs) 1334 return -ENOBUFS; 1335 1336 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1337 nl_ftypes = nla_nest_start(msg, ift); 1338 if (!nl_ftypes) 1339 return -ENOBUFS; 1340 i = 0; 1341 stypes = mgmt_stypes[ift].rx; 1342 while (stypes) { 1343 if ((stypes & 1) && 1344 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1345 (i << 4) | IEEE80211_FTYPE_MGMT)) 1346 return -ENOBUFS; 1347 stypes >>= 1; 1348 i++; 1349 } 1350 nla_nest_end(msg, nl_ftypes); 1351 } 1352 nla_nest_end(msg, nl_ifs); 1353 1354 return 0; 1355 } 1356 1357 #define CMD(op, n) \ 1358 do { \ 1359 if (rdev->ops->op) { \ 1360 i++; \ 1361 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1362 goto nla_put_failure; \ 1363 } \ 1364 } while (0) 1365 1366 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev, 1367 struct sk_buff *msg) 1368 { 1369 int i = 0; 1370 1371 /* 1372 * do *NOT* add anything into this function, new things need to be 1373 * advertised only to new versions of userspace that can deal with 1374 * the split (and they can't possibly care about new features... 1375 */ 1376 CMD(add_virtual_intf, NEW_INTERFACE); 1377 CMD(change_virtual_intf, SET_INTERFACE); 1378 CMD(add_key, NEW_KEY); 1379 CMD(start_ap, START_AP); 1380 CMD(add_station, NEW_STATION); 1381 CMD(add_mpath, NEW_MPATH); 1382 CMD(update_mesh_config, SET_MESH_CONFIG); 1383 CMD(change_bss, SET_BSS); 1384 CMD(auth, AUTHENTICATE); 1385 CMD(assoc, ASSOCIATE); 1386 CMD(deauth, DEAUTHENTICATE); 1387 CMD(disassoc, DISASSOCIATE); 1388 CMD(join_ibss, JOIN_IBSS); 1389 CMD(join_mesh, JOIN_MESH); 1390 CMD(set_pmksa, SET_PMKSA); 1391 CMD(del_pmksa, DEL_PMKSA); 1392 CMD(flush_pmksa, FLUSH_PMKSA); 1393 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1394 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1395 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1396 CMD(mgmt_tx, FRAME); 1397 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1398 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1399 i++; 1400 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1401 goto nla_put_failure; 1402 } 1403 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1404 rdev->ops->join_mesh) { 1405 i++; 1406 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1407 goto nla_put_failure; 1408 } 1409 CMD(set_wds_peer, SET_WDS_PEER); 1410 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1411 CMD(tdls_mgmt, TDLS_MGMT); 1412 CMD(tdls_oper, TDLS_OPER); 1413 } 1414 if (rdev->wiphy.max_sched_scan_reqs) 1415 CMD(sched_scan_start, START_SCHED_SCAN); 1416 CMD(probe_client, PROBE_CLIENT); 1417 CMD(set_noack_map, SET_NOACK_MAP); 1418 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1419 i++; 1420 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1421 goto nla_put_failure; 1422 } 1423 CMD(start_p2p_device, START_P2P_DEVICE); 1424 CMD(set_mcast_rate, SET_MCAST_RATE); 1425 #ifdef CONFIG_NL80211_TESTMODE 1426 CMD(testmode_cmd, TESTMODE); 1427 #endif 1428 1429 if (rdev->ops->connect || rdev->ops->auth) { 1430 i++; 1431 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1432 goto nla_put_failure; 1433 } 1434 1435 if (rdev->ops->disconnect || rdev->ops->deauth) { 1436 i++; 1437 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1438 goto nla_put_failure; 1439 } 1440 1441 return i; 1442 nla_put_failure: 1443 return -ENOBUFS; 1444 } 1445 1446 struct nl80211_dump_wiphy_state { 1447 s64 filter_wiphy; 1448 long start; 1449 long split_start, band_start, chan_start, capa_start; 1450 bool split; 1451 }; 1452 1453 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1454 enum nl80211_commands cmd, 1455 struct sk_buff *msg, u32 portid, u32 seq, 1456 int flags, struct nl80211_dump_wiphy_state *state) 1457 { 1458 void *hdr; 1459 struct nlattr *nl_bands, *nl_band; 1460 struct nlattr *nl_freqs, *nl_freq; 1461 struct nlattr *nl_cmds; 1462 enum nl80211_band band; 1463 struct ieee80211_channel *chan; 1464 int i; 1465 const struct ieee80211_txrx_stypes *mgmt_stypes = 1466 rdev->wiphy.mgmt_stypes; 1467 u32 features; 1468 1469 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1470 if (!hdr) 1471 return -ENOBUFS; 1472 1473 if (WARN_ON(!state)) 1474 return -EINVAL; 1475 1476 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1477 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1478 wiphy_name(&rdev->wiphy)) || 1479 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1480 cfg80211_rdev_list_generation)) 1481 goto nla_put_failure; 1482 1483 if (cmd != NL80211_CMD_NEW_WIPHY) 1484 goto finish; 1485 1486 switch (state->split_start) { 1487 case 0: 1488 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1489 rdev->wiphy.retry_short) || 1490 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1491 rdev->wiphy.retry_long) || 1492 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1493 rdev->wiphy.frag_threshold) || 1494 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1495 rdev->wiphy.rts_threshold) || 1496 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1497 rdev->wiphy.coverage_class) || 1498 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1499 rdev->wiphy.max_scan_ssids) || 1500 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1501 rdev->wiphy.max_sched_scan_ssids) || 1502 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1503 rdev->wiphy.max_scan_ie_len) || 1504 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1505 rdev->wiphy.max_sched_scan_ie_len) || 1506 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1507 rdev->wiphy.max_match_sets) || 1508 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS, 1509 rdev->wiphy.max_sched_scan_plans) || 1510 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL, 1511 rdev->wiphy.max_sched_scan_plan_interval) || 1512 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS, 1513 rdev->wiphy.max_sched_scan_plan_iterations)) 1514 goto nla_put_failure; 1515 1516 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1517 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1518 goto nla_put_failure; 1519 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1520 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1521 goto nla_put_failure; 1522 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1523 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1524 goto nla_put_failure; 1525 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1526 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1527 goto nla_put_failure; 1528 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1529 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1530 goto nla_put_failure; 1531 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1532 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1533 goto nla_put_failure; 1534 state->split_start++; 1535 if (state->split) 1536 break; 1537 case 1: 1538 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1539 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1540 rdev->wiphy.cipher_suites)) 1541 goto nla_put_failure; 1542 1543 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1544 rdev->wiphy.max_num_pmkids)) 1545 goto nla_put_failure; 1546 1547 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1548 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1549 goto nla_put_failure; 1550 1551 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1552 rdev->wiphy.available_antennas_tx) || 1553 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1554 rdev->wiphy.available_antennas_rx)) 1555 goto nla_put_failure; 1556 1557 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1558 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1559 rdev->wiphy.probe_resp_offload)) 1560 goto nla_put_failure; 1561 1562 if ((rdev->wiphy.available_antennas_tx || 1563 rdev->wiphy.available_antennas_rx) && 1564 rdev->ops->get_antenna) { 1565 u32 tx_ant = 0, rx_ant = 0; 1566 int res; 1567 1568 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1569 if (!res) { 1570 if (nla_put_u32(msg, 1571 NL80211_ATTR_WIPHY_ANTENNA_TX, 1572 tx_ant) || 1573 nla_put_u32(msg, 1574 NL80211_ATTR_WIPHY_ANTENNA_RX, 1575 rx_ant)) 1576 goto nla_put_failure; 1577 } 1578 } 1579 1580 state->split_start++; 1581 if (state->split) 1582 break; 1583 case 2: 1584 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1585 rdev->wiphy.interface_modes)) 1586 goto nla_put_failure; 1587 state->split_start++; 1588 if (state->split) 1589 break; 1590 case 3: 1591 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1592 if (!nl_bands) 1593 goto nla_put_failure; 1594 1595 for (band = state->band_start; 1596 band < NUM_NL80211_BANDS; band++) { 1597 struct ieee80211_supported_band *sband; 1598 1599 sband = rdev->wiphy.bands[band]; 1600 1601 if (!sband) 1602 continue; 1603 1604 nl_band = nla_nest_start(msg, band); 1605 if (!nl_band) 1606 goto nla_put_failure; 1607 1608 switch (state->chan_start) { 1609 case 0: 1610 if (nl80211_send_band_rateinfo(msg, sband)) 1611 goto nla_put_failure; 1612 state->chan_start++; 1613 if (state->split) 1614 break; 1615 default: 1616 /* add frequencies */ 1617 nl_freqs = nla_nest_start( 1618 msg, NL80211_BAND_ATTR_FREQS); 1619 if (!nl_freqs) 1620 goto nla_put_failure; 1621 1622 for (i = state->chan_start - 1; 1623 i < sband->n_channels; 1624 i++) { 1625 nl_freq = nla_nest_start(msg, i); 1626 if (!nl_freq) 1627 goto nla_put_failure; 1628 1629 chan = &sband->channels[i]; 1630 1631 if (nl80211_msg_put_channel( 1632 msg, chan, 1633 state->split)) 1634 goto nla_put_failure; 1635 1636 nla_nest_end(msg, nl_freq); 1637 if (state->split) 1638 break; 1639 } 1640 if (i < sband->n_channels) 1641 state->chan_start = i + 2; 1642 else 1643 state->chan_start = 0; 1644 nla_nest_end(msg, nl_freqs); 1645 } 1646 1647 nla_nest_end(msg, nl_band); 1648 1649 if (state->split) { 1650 /* start again here */ 1651 if (state->chan_start) 1652 band--; 1653 break; 1654 } 1655 } 1656 nla_nest_end(msg, nl_bands); 1657 1658 if (band < NUM_NL80211_BANDS) 1659 state->band_start = band + 1; 1660 else 1661 state->band_start = 0; 1662 1663 /* if bands & channels are done, continue outside */ 1664 if (state->band_start == 0 && state->chan_start == 0) 1665 state->split_start++; 1666 if (state->split) 1667 break; 1668 case 4: 1669 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1670 if (!nl_cmds) 1671 goto nla_put_failure; 1672 1673 i = nl80211_add_commands_unsplit(rdev, msg); 1674 if (i < 0) 1675 goto nla_put_failure; 1676 if (state->split) { 1677 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1678 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1679 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1680 CMD(channel_switch, CHANNEL_SWITCH); 1681 CMD(set_qos_map, SET_QOS_MAP); 1682 if (rdev->wiphy.features & 1683 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1684 CMD(add_tx_ts, ADD_TX_TS); 1685 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST); 1686 CMD(update_connect_params, UPDATE_CONNECT_PARAMS); 1687 } 1688 #undef CMD 1689 1690 nla_nest_end(msg, nl_cmds); 1691 state->split_start++; 1692 if (state->split) 1693 break; 1694 case 5: 1695 if (rdev->ops->remain_on_channel && 1696 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1697 nla_put_u32(msg, 1698 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1699 rdev->wiphy.max_remain_on_channel_duration)) 1700 goto nla_put_failure; 1701 1702 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1703 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1704 goto nla_put_failure; 1705 1706 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1707 goto nla_put_failure; 1708 state->split_start++; 1709 if (state->split) 1710 break; 1711 case 6: 1712 #ifdef CONFIG_PM 1713 if (nl80211_send_wowlan(msg, rdev, state->split)) 1714 goto nla_put_failure; 1715 state->split_start++; 1716 if (state->split) 1717 break; 1718 #else 1719 state->split_start++; 1720 #endif 1721 case 7: 1722 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1723 rdev->wiphy.software_iftypes)) 1724 goto nla_put_failure; 1725 1726 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1727 state->split)) 1728 goto nla_put_failure; 1729 1730 state->split_start++; 1731 if (state->split) 1732 break; 1733 case 8: 1734 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1735 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1736 rdev->wiphy.ap_sme_capa)) 1737 goto nla_put_failure; 1738 1739 features = rdev->wiphy.features; 1740 /* 1741 * We can only add the per-channel limit information if the 1742 * dump is split, otherwise it makes it too big. Therefore 1743 * only advertise it in that case. 1744 */ 1745 if (state->split) 1746 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1747 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1748 goto nla_put_failure; 1749 1750 if (rdev->wiphy.ht_capa_mod_mask && 1751 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1752 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1753 rdev->wiphy.ht_capa_mod_mask)) 1754 goto nla_put_failure; 1755 1756 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1757 rdev->wiphy.max_acl_mac_addrs && 1758 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1759 rdev->wiphy.max_acl_mac_addrs)) 1760 goto nla_put_failure; 1761 1762 /* 1763 * Any information below this point is only available to 1764 * applications that can deal with it being split. This 1765 * helps ensure that newly added capabilities don't break 1766 * older tools by overrunning their buffers. 1767 * 1768 * We still increment split_start so that in the split 1769 * case we'll continue with more data in the next round, 1770 * but break unconditionally so unsplit data stops here. 1771 */ 1772 state->split_start++; 1773 break; 1774 case 9: 1775 if (rdev->wiphy.extended_capabilities && 1776 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1777 rdev->wiphy.extended_capabilities_len, 1778 rdev->wiphy.extended_capabilities) || 1779 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1780 rdev->wiphy.extended_capabilities_len, 1781 rdev->wiphy.extended_capabilities_mask))) 1782 goto nla_put_failure; 1783 1784 if (rdev->wiphy.vht_capa_mod_mask && 1785 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1786 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1787 rdev->wiphy.vht_capa_mod_mask)) 1788 goto nla_put_failure; 1789 1790 state->split_start++; 1791 break; 1792 case 10: 1793 if (nl80211_send_coalesce(msg, rdev)) 1794 goto nla_put_failure; 1795 1796 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1797 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1798 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1799 goto nla_put_failure; 1800 1801 if (rdev->wiphy.max_ap_assoc_sta && 1802 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1803 rdev->wiphy.max_ap_assoc_sta)) 1804 goto nla_put_failure; 1805 1806 state->split_start++; 1807 break; 1808 case 11: 1809 if (rdev->wiphy.n_vendor_commands) { 1810 const struct nl80211_vendor_cmd_info *info; 1811 struct nlattr *nested; 1812 1813 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1814 if (!nested) 1815 goto nla_put_failure; 1816 1817 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1818 info = &rdev->wiphy.vendor_commands[i].info; 1819 if (nla_put(msg, i + 1, sizeof(*info), info)) 1820 goto nla_put_failure; 1821 } 1822 nla_nest_end(msg, nested); 1823 } 1824 1825 if (rdev->wiphy.n_vendor_events) { 1826 const struct nl80211_vendor_cmd_info *info; 1827 struct nlattr *nested; 1828 1829 nested = nla_nest_start(msg, 1830 NL80211_ATTR_VENDOR_EVENTS); 1831 if (!nested) 1832 goto nla_put_failure; 1833 1834 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 1835 info = &rdev->wiphy.vendor_events[i]; 1836 if (nla_put(msg, i + 1, sizeof(*info), info)) 1837 goto nla_put_failure; 1838 } 1839 nla_nest_end(msg, nested); 1840 } 1841 state->split_start++; 1842 break; 1843 case 12: 1844 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 1845 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 1846 rdev->wiphy.max_num_csa_counters)) 1847 goto nla_put_failure; 1848 1849 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 1850 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 1851 goto nla_put_failure; 1852 1853 if (rdev->wiphy.max_sched_scan_reqs && 1854 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS, 1855 rdev->wiphy.max_sched_scan_reqs)) 1856 goto nla_put_failure; 1857 1858 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 1859 sizeof(rdev->wiphy.ext_features), 1860 rdev->wiphy.ext_features)) 1861 goto nla_put_failure; 1862 1863 if (rdev->wiphy.bss_select_support) { 1864 struct nlattr *nested; 1865 u32 bss_select_support = rdev->wiphy.bss_select_support; 1866 1867 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT); 1868 if (!nested) 1869 goto nla_put_failure; 1870 1871 i = 0; 1872 while (bss_select_support) { 1873 if ((bss_select_support & 1) && 1874 nla_put_flag(msg, i)) 1875 goto nla_put_failure; 1876 i++; 1877 bss_select_support >>= 1; 1878 } 1879 nla_nest_end(msg, nested); 1880 } 1881 1882 state->split_start++; 1883 break; 1884 case 13: 1885 if (rdev->wiphy.num_iftype_ext_capab && 1886 rdev->wiphy.iftype_ext_capab) { 1887 struct nlattr *nested_ext_capab, *nested; 1888 1889 nested = nla_nest_start(msg, 1890 NL80211_ATTR_IFTYPE_EXT_CAPA); 1891 if (!nested) 1892 goto nla_put_failure; 1893 1894 for (i = state->capa_start; 1895 i < rdev->wiphy.num_iftype_ext_capab; i++) { 1896 const struct wiphy_iftype_ext_capab *capab; 1897 1898 capab = &rdev->wiphy.iftype_ext_capab[i]; 1899 1900 nested_ext_capab = nla_nest_start(msg, i); 1901 if (!nested_ext_capab || 1902 nla_put_u32(msg, NL80211_ATTR_IFTYPE, 1903 capab->iftype) || 1904 nla_put(msg, NL80211_ATTR_EXT_CAPA, 1905 capab->extended_capabilities_len, 1906 capab->extended_capabilities) || 1907 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1908 capab->extended_capabilities_len, 1909 capab->extended_capabilities_mask)) 1910 goto nla_put_failure; 1911 1912 nla_nest_end(msg, nested_ext_capab); 1913 if (state->split) 1914 break; 1915 } 1916 nla_nest_end(msg, nested); 1917 if (i < rdev->wiphy.num_iftype_ext_capab) { 1918 state->capa_start = i + 1; 1919 break; 1920 } 1921 } 1922 1923 if (nla_put_u32(msg, NL80211_ATTR_BANDS, 1924 rdev->wiphy.nan_supported_bands)) 1925 goto nla_put_failure; 1926 1927 /* done */ 1928 state->split_start = 0; 1929 break; 1930 } 1931 finish: 1932 genlmsg_end(msg, hdr); 1933 return 0; 1934 1935 nla_put_failure: 1936 genlmsg_cancel(msg, hdr); 1937 return -EMSGSIZE; 1938 } 1939 1940 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1941 struct netlink_callback *cb, 1942 struct nl80211_dump_wiphy_state *state) 1943 { 1944 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam); 1945 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb, 1946 nl80211_fam.maxattr, nl80211_policy, NULL); 1947 /* ignore parse errors for backward compatibility */ 1948 if (ret) 1949 return 0; 1950 1951 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1952 if (tb[NL80211_ATTR_WIPHY]) 1953 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1954 if (tb[NL80211_ATTR_WDEV]) 1955 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1956 if (tb[NL80211_ATTR_IFINDEX]) { 1957 struct net_device *netdev; 1958 struct cfg80211_registered_device *rdev; 1959 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1960 1961 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 1962 if (!netdev) 1963 return -ENODEV; 1964 if (netdev->ieee80211_ptr) { 1965 rdev = wiphy_to_rdev( 1966 netdev->ieee80211_ptr->wiphy); 1967 state->filter_wiphy = rdev->wiphy_idx; 1968 } 1969 } 1970 1971 return 0; 1972 } 1973 1974 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1975 { 1976 int idx = 0, ret; 1977 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1978 struct cfg80211_registered_device *rdev; 1979 1980 rtnl_lock(); 1981 if (!state) { 1982 state = kzalloc(sizeof(*state), GFP_KERNEL); 1983 if (!state) { 1984 rtnl_unlock(); 1985 return -ENOMEM; 1986 } 1987 state->filter_wiphy = -1; 1988 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1989 if (ret) { 1990 kfree(state); 1991 rtnl_unlock(); 1992 return ret; 1993 } 1994 cb->args[0] = (long)state; 1995 } 1996 1997 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 1998 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 1999 continue; 2000 if (++idx <= state->start) 2001 continue; 2002 if (state->filter_wiphy != -1 && 2003 state->filter_wiphy != rdev->wiphy_idx) 2004 continue; 2005 /* attempt to fit multiple wiphy data chunks into the skb */ 2006 do { 2007 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 2008 skb, 2009 NETLINK_CB(cb->skb).portid, 2010 cb->nlh->nlmsg_seq, 2011 NLM_F_MULTI, state); 2012 if (ret < 0) { 2013 /* 2014 * If sending the wiphy data didn't fit (ENOBUFS 2015 * or EMSGSIZE returned), this SKB is still 2016 * empty (so it's not too big because another 2017 * wiphy dataset is already in the skb) and 2018 * we've not tried to adjust the dump allocation 2019 * yet ... then adjust the alloc size to be 2020 * bigger, and return 1 but with the empty skb. 2021 * This results in an empty message being RX'ed 2022 * in userspace, but that is ignored. 2023 * 2024 * We can then retry with the larger buffer. 2025 */ 2026 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 2027 !skb->len && !state->split && 2028 cb->min_dump_alloc < 4096) { 2029 cb->min_dump_alloc = 4096; 2030 state->split_start = 0; 2031 rtnl_unlock(); 2032 return 1; 2033 } 2034 idx--; 2035 break; 2036 } 2037 } while (state->split_start > 0); 2038 break; 2039 } 2040 rtnl_unlock(); 2041 2042 state->start = idx; 2043 2044 return skb->len; 2045 } 2046 2047 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 2048 { 2049 kfree((void *)cb->args[0]); 2050 return 0; 2051 } 2052 2053 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 2054 { 2055 struct sk_buff *msg; 2056 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2057 struct nl80211_dump_wiphy_state state = {}; 2058 2059 msg = nlmsg_new(4096, GFP_KERNEL); 2060 if (!msg) 2061 return -ENOMEM; 2062 2063 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 2064 info->snd_portid, info->snd_seq, 0, 2065 &state) < 0) { 2066 nlmsg_free(msg); 2067 return -ENOBUFS; 2068 } 2069 2070 return genlmsg_reply(msg, info); 2071 } 2072 2073 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 2074 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 2075 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 2076 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 2077 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 2078 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 2079 }; 2080 2081 static int parse_txq_params(struct nlattr *tb[], 2082 struct ieee80211_txq_params *txq_params) 2083 { 2084 u8 ac; 2085 2086 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 2087 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 2088 !tb[NL80211_TXQ_ATTR_AIFS]) 2089 return -EINVAL; 2090 2091 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 2092 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 2093 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 2094 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 2095 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 2096 2097 if (ac >= NL80211_NUM_ACS) 2098 return -EINVAL; 2099 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS); 2100 return 0; 2101 } 2102 2103 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 2104 { 2105 /* 2106 * You can only set the channel explicitly for WDS interfaces, 2107 * all others have their channel managed via their respective 2108 * "establish a connection" command (connect, join, ...) 2109 * 2110 * For AP/GO and mesh mode, the channel can be set with the 2111 * channel userspace API, but is only stored and passed to the 2112 * low-level driver when the AP starts or the mesh is joined. 2113 * This is for backward compatibility, userspace can also give 2114 * the channel in the start-ap or join-mesh commands instead. 2115 * 2116 * Monitors are special as they are normally slaved to 2117 * whatever else is going on, so they have their own special 2118 * operation to set the monitor channel if possible. 2119 */ 2120 return !wdev || 2121 wdev->iftype == NL80211_IFTYPE_AP || 2122 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 2123 wdev->iftype == NL80211_IFTYPE_MONITOR || 2124 wdev->iftype == NL80211_IFTYPE_P2P_GO; 2125 } 2126 2127 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 2128 struct genl_info *info, 2129 struct cfg80211_chan_def *chandef) 2130 { 2131 u32 control_freq; 2132 2133 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 2134 return -EINVAL; 2135 2136 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 2137 2138 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 2139 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 2140 chandef->center_freq1 = control_freq; 2141 chandef->center_freq2 = 0; 2142 2143 /* Primary channel not allowed */ 2144 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 2145 return -EINVAL; 2146 2147 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 2148 enum nl80211_channel_type chantype; 2149 2150 chantype = nla_get_u32( 2151 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2152 2153 switch (chantype) { 2154 case NL80211_CHAN_NO_HT: 2155 case NL80211_CHAN_HT20: 2156 case NL80211_CHAN_HT40PLUS: 2157 case NL80211_CHAN_HT40MINUS: 2158 cfg80211_chandef_create(chandef, chandef->chan, 2159 chantype); 2160 /* user input for center_freq is incorrect */ 2161 if (info->attrs[NL80211_ATTR_CENTER_FREQ1] && 2162 chandef->center_freq1 != nla_get_u32( 2163 info->attrs[NL80211_ATTR_CENTER_FREQ1])) 2164 return -EINVAL; 2165 /* center_freq2 must be zero */ 2166 if (info->attrs[NL80211_ATTR_CENTER_FREQ2] && 2167 nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2])) 2168 return -EINVAL; 2169 break; 2170 default: 2171 return -EINVAL; 2172 } 2173 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 2174 chandef->width = 2175 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 2176 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 2177 chandef->center_freq1 = 2178 nla_get_u32( 2179 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 2180 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 2181 chandef->center_freq2 = 2182 nla_get_u32( 2183 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 2184 } 2185 2186 if (!cfg80211_chandef_valid(chandef)) 2187 return -EINVAL; 2188 2189 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 2190 IEEE80211_CHAN_DISABLED)) 2191 return -EINVAL; 2192 2193 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 2194 chandef->width == NL80211_CHAN_WIDTH_10) && 2195 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 2196 return -EINVAL; 2197 2198 return 0; 2199 } 2200 2201 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 2202 struct net_device *dev, 2203 struct genl_info *info) 2204 { 2205 struct cfg80211_chan_def chandef; 2206 int result; 2207 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 2208 struct wireless_dev *wdev = NULL; 2209 2210 if (dev) 2211 wdev = dev->ieee80211_ptr; 2212 if (!nl80211_can_set_dev_channel(wdev)) 2213 return -EOPNOTSUPP; 2214 if (wdev) 2215 iftype = wdev->iftype; 2216 2217 result = nl80211_parse_chandef(rdev, info, &chandef); 2218 if (result) 2219 return result; 2220 2221 switch (iftype) { 2222 case NL80211_IFTYPE_AP: 2223 case NL80211_IFTYPE_P2P_GO: 2224 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 2225 iftype)) { 2226 result = -EINVAL; 2227 break; 2228 } 2229 if (wdev->beacon_interval) { 2230 if (!dev || !rdev->ops->set_ap_chanwidth || 2231 !(rdev->wiphy.features & 2232 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 2233 result = -EBUSY; 2234 break; 2235 } 2236 2237 /* Only allow dynamic channel width changes */ 2238 if (chandef.chan != wdev->preset_chandef.chan) { 2239 result = -EBUSY; 2240 break; 2241 } 2242 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2243 if (result) 2244 break; 2245 } 2246 wdev->preset_chandef = chandef; 2247 result = 0; 2248 break; 2249 case NL80211_IFTYPE_MESH_POINT: 2250 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2251 break; 2252 case NL80211_IFTYPE_MONITOR: 2253 result = cfg80211_set_monitor_channel(rdev, &chandef); 2254 break; 2255 default: 2256 result = -EINVAL; 2257 } 2258 2259 return result; 2260 } 2261 2262 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2263 { 2264 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2265 struct net_device *netdev = info->user_ptr[1]; 2266 2267 return __nl80211_set_channel(rdev, netdev, info); 2268 } 2269 2270 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2271 { 2272 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2273 struct net_device *dev = info->user_ptr[1]; 2274 struct wireless_dev *wdev = dev->ieee80211_ptr; 2275 const u8 *bssid; 2276 2277 if (!info->attrs[NL80211_ATTR_MAC]) 2278 return -EINVAL; 2279 2280 if (netif_running(dev)) 2281 return -EBUSY; 2282 2283 if (!rdev->ops->set_wds_peer) 2284 return -EOPNOTSUPP; 2285 2286 if (wdev->iftype != NL80211_IFTYPE_WDS) 2287 return -EOPNOTSUPP; 2288 2289 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2290 return rdev_set_wds_peer(rdev, dev, bssid); 2291 } 2292 2293 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2294 { 2295 struct cfg80211_registered_device *rdev; 2296 struct net_device *netdev = NULL; 2297 struct wireless_dev *wdev; 2298 int result = 0, rem_txq_params = 0; 2299 struct nlattr *nl_txq_params; 2300 u32 changed; 2301 u8 retry_short = 0, retry_long = 0; 2302 u32 frag_threshold = 0, rts_threshold = 0; 2303 u8 coverage_class = 0; 2304 2305 ASSERT_RTNL(); 2306 2307 /* 2308 * Try to find the wiphy and netdev. Normally this 2309 * function shouldn't need the netdev, but this is 2310 * done for backward compatibility -- previously 2311 * setting the channel was done per wiphy, but now 2312 * it is per netdev. Previous userland like hostapd 2313 * also passed a netdev to set_wiphy, so that it is 2314 * possible to let that go to the right netdev! 2315 */ 2316 2317 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2318 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2319 2320 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2321 if (netdev && netdev->ieee80211_ptr) 2322 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2323 else 2324 netdev = NULL; 2325 } 2326 2327 if (!netdev) { 2328 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2329 info->attrs); 2330 if (IS_ERR(rdev)) 2331 return PTR_ERR(rdev); 2332 wdev = NULL; 2333 netdev = NULL; 2334 result = 0; 2335 } else 2336 wdev = netdev->ieee80211_ptr; 2337 2338 /* 2339 * end workaround code, by now the rdev is available 2340 * and locked, and wdev may or may not be NULL. 2341 */ 2342 2343 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2344 result = cfg80211_dev_rename( 2345 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2346 2347 if (result) 2348 return result; 2349 2350 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2351 struct ieee80211_txq_params txq_params; 2352 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2353 2354 if (!rdev->ops->set_txq_params) 2355 return -EOPNOTSUPP; 2356 2357 if (!netdev) 2358 return -EINVAL; 2359 2360 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2361 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2362 return -EINVAL; 2363 2364 if (!netif_running(netdev)) 2365 return -ENETDOWN; 2366 2367 nla_for_each_nested(nl_txq_params, 2368 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2369 rem_txq_params) { 2370 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX, 2371 nl_txq_params, 2372 txq_params_policy, 2373 info->extack); 2374 if (result) 2375 return result; 2376 result = parse_txq_params(tb, &txq_params); 2377 if (result) 2378 return result; 2379 2380 result = rdev_set_txq_params(rdev, netdev, 2381 &txq_params); 2382 if (result) 2383 return result; 2384 } 2385 } 2386 2387 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2388 result = __nl80211_set_channel( 2389 rdev, 2390 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2391 info); 2392 if (result) 2393 return result; 2394 } 2395 2396 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2397 struct wireless_dev *txp_wdev = wdev; 2398 enum nl80211_tx_power_setting type; 2399 int idx, mbm = 0; 2400 2401 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2402 txp_wdev = NULL; 2403 2404 if (!rdev->ops->set_tx_power) 2405 return -EOPNOTSUPP; 2406 2407 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2408 type = nla_get_u32(info->attrs[idx]); 2409 2410 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2411 (type != NL80211_TX_POWER_AUTOMATIC)) 2412 return -EINVAL; 2413 2414 if (type != NL80211_TX_POWER_AUTOMATIC) { 2415 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2416 mbm = nla_get_u32(info->attrs[idx]); 2417 } 2418 2419 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2420 if (result) 2421 return result; 2422 } 2423 2424 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2425 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2426 u32 tx_ant, rx_ant; 2427 2428 if ((!rdev->wiphy.available_antennas_tx && 2429 !rdev->wiphy.available_antennas_rx) || 2430 !rdev->ops->set_antenna) 2431 return -EOPNOTSUPP; 2432 2433 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2434 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2435 2436 /* reject antenna configurations which don't match the 2437 * available antenna masks, except for the "all" mask */ 2438 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2439 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2440 return -EINVAL; 2441 2442 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2443 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2444 2445 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2446 if (result) 2447 return result; 2448 } 2449 2450 changed = 0; 2451 2452 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2453 retry_short = nla_get_u8( 2454 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2455 if (retry_short == 0) 2456 return -EINVAL; 2457 2458 changed |= WIPHY_PARAM_RETRY_SHORT; 2459 } 2460 2461 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2462 retry_long = nla_get_u8( 2463 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2464 if (retry_long == 0) 2465 return -EINVAL; 2466 2467 changed |= WIPHY_PARAM_RETRY_LONG; 2468 } 2469 2470 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2471 frag_threshold = nla_get_u32( 2472 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2473 if (frag_threshold < 256) 2474 return -EINVAL; 2475 2476 if (frag_threshold != (u32) -1) { 2477 /* 2478 * Fragments (apart from the last one) are required to 2479 * have even length. Make the fragmentation code 2480 * simpler by stripping LSB should someone try to use 2481 * odd threshold value. 2482 */ 2483 frag_threshold &= ~0x1; 2484 } 2485 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2486 } 2487 2488 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2489 rts_threshold = nla_get_u32( 2490 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2491 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2492 } 2493 2494 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2495 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2496 return -EINVAL; 2497 2498 coverage_class = nla_get_u8( 2499 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2500 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2501 } 2502 2503 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2504 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2505 return -EOPNOTSUPP; 2506 2507 changed |= WIPHY_PARAM_DYN_ACK; 2508 } 2509 2510 if (changed) { 2511 u8 old_retry_short, old_retry_long; 2512 u32 old_frag_threshold, old_rts_threshold; 2513 u8 old_coverage_class; 2514 2515 if (!rdev->ops->set_wiphy_params) 2516 return -EOPNOTSUPP; 2517 2518 old_retry_short = rdev->wiphy.retry_short; 2519 old_retry_long = rdev->wiphy.retry_long; 2520 old_frag_threshold = rdev->wiphy.frag_threshold; 2521 old_rts_threshold = rdev->wiphy.rts_threshold; 2522 old_coverage_class = rdev->wiphy.coverage_class; 2523 2524 if (changed & WIPHY_PARAM_RETRY_SHORT) 2525 rdev->wiphy.retry_short = retry_short; 2526 if (changed & WIPHY_PARAM_RETRY_LONG) 2527 rdev->wiphy.retry_long = retry_long; 2528 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2529 rdev->wiphy.frag_threshold = frag_threshold; 2530 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2531 rdev->wiphy.rts_threshold = rts_threshold; 2532 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2533 rdev->wiphy.coverage_class = coverage_class; 2534 2535 result = rdev_set_wiphy_params(rdev, changed); 2536 if (result) { 2537 rdev->wiphy.retry_short = old_retry_short; 2538 rdev->wiphy.retry_long = old_retry_long; 2539 rdev->wiphy.frag_threshold = old_frag_threshold; 2540 rdev->wiphy.rts_threshold = old_rts_threshold; 2541 rdev->wiphy.coverage_class = old_coverage_class; 2542 return result; 2543 } 2544 } 2545 return 0; 2546 } 2547 2548 static inline u64 wdev_id(struct wireless_dev *wdev) 2549 { 2550 return (u64)wdev->identifier | 2551 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2552 } 2553 2554 static int nl80211_send_chandef(struct sk_buff *msg, 2555 const struct cfg80211_chan_def *chandef) 2556 { 2557 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2558 return -EINVAL; 2559 2560 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2561 chandef->chan->center_freq)) 2562 return -ENOBUFS; 2563 switch (chandef->width) { 2564 case NL80211_CHAN_WIDTH_20_NOHT: 2565 case NL80211_CHAN_WIDTH_20: 2566 case NL80211_CHAN_WIDTH_40: 2567 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2568 cfg80211_get_chandef_type(chandef))) 2569 return -ENOBUFS; 2570 break; 2571 default: 2572 break; 2573 } 2574 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2575 return -ENOBUFS; 2576 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2577 return -ENOBUFS; 2578 if (chandef->center_freq2 && 2579 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2580 return -ENOBUFS; 2581 return 0; 2582 } 2583 2584 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2585 struct cfg80211_registered_device *rdev, 2586 struct wireless_dev *wdev, bool removal) 2587 { 2588 struct net_device *dev = wdev->netdev; 2589 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2590 void *hdr; 2591 2592 if (removal) 2593 cmd = NL80211_CMD_DEL_INTERFACE; 2594 2595 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2596 if (!hdr) 2597 return -1; 2598 2599 if (dev && 2600 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2601 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2602 goto nla_put_failure; 2603 2604 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2605 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2606 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 2607 NL80211_ATTR_PAD) || 2608 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2609 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2610 rdev->devlist_generation ^ 2611 (cfg80211_rdev_list_generation << 2))) 2612 goto nla_put_failure; 2613 2614 if (rdev->ops->get_channel) { 2615 int ret; 2616 struct cfg80211_chan_def chandef; 2617 2618 ret = rdev_get_channel(rdev, wdev, &chandef); 2619 if (ret == 0) { 2620 if (nl80211_send_chandef(msg, &chandef)) 2621 goto nla_put_failure; 2622 } 2623 } 2624 2625 if (rdev->ops->get_tx_power) { 2626 int dbm, ret; 2627 2628 ret = rdev_get_tx_power(rdev, wdev, &dbm); 2629 if (ret == 0 && 2630 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL, 2631 DBM_TO_MBM(dbm))) 2632 goto nla_put_failure; 2633 } 2634 2635 wdev_lock(wdev); 2636 switch (wdev->iftype) { 2637 case NL80211_IFTYPE_AP: 2638 if (wdev->ssid_len && 2639 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2640 goto nla_put_failure_locked; 2641 break; 2642 case NL80211_IFTYPE_STATION: 2643 case NL80211_IFTYPE_P2P_CLIENT: 2644 case NL80211_IFTYPE_ADHOC: { 2645 const u8 *ssid_ie; 2646 if (!wdev->current_bss) 2647 break; 2648 rcu_read_lock(); 2649 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, 2650 WLAN_EID_SSID); 2651 if (ssid_ie && 2652 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2)) 2653 goto nla_put_failure_rcu_locked; 2654 rcu_read_unlock(); 2655 break; 2656 } 2657 default: 2658 /* nothing */ 2659 break; 2660 } 2661 wdev_unlock(wdev); 2662 2663 genlmsg_end(msg, hdr); 2664 return 0; 2665 2666 nla_put_failure_rcu_locked: 2667 rcu_read_unlock(); 2668 nla_put_failure_locked: 2669 wdev_unlock(wdev); 2670 nla_put_failure: 2671 genlmsg_cancel(msg, hdr); 2672 return -EMSGSIZE; 2673 } 2674 2675 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2676 { 2677 int wp_idx = 0; 2678 int if_idx = 0; 2679 int wp_start = cb->args[0]; 2680 int if_start = cb->args[1]; 2681 int filter_wiphy = -1; 2682 struct cfg80211_registered_device *rdev; 2683 struct wireless_dev *wdev; 2684 int ret; 2685 2686 rtnl_lock(); 2687 if (!cb->args[2]) { 2688 struct nl80211_dump_wiphy_state state = { 2689 .filter_wiphy = -1, 2690 }; 2691 2692 ret = nl80211_dump_wiphy_parse(skb, cb, &state); 2693 if (ret) 2694 goto out_unlock; 2695 2696 filter_wiphy = state.filter_wiphy; 2697 2698 /* 2699 * if filtering, set cb->args[2] to +1 since 0 is the default 2700 * value needed to determine that parsing is necessary. 2701 */ 2702 if (filter_wiphy >= 0) 2703 cb->args[2] = filter_wiphy + 1; 2704 else 2705 cb->args[2] = -1; 2706 } else if (cb->args[2] > 0) { 2707 filter_wiphy = cb->args[2] - 1; 2708 } 2709 2710 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2711 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2712 continue; 2713 if (wp_idx < wp_start) { 2714 wp_idx++; 2715 continue; 2716 } 2717 2718 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx) 2719 continue; 2720 2721 if_idx = 0; 2722 2723 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 2724 if (if_idx < if_start) { 2725 if_idx++; 2726 continue; 2727 } 2728 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2729 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2730 rdev, wdev, false) < 0) { 2731 goto out; 2732 } 2733 if_idx++; 2734 } 2735 2736 wp_idx++; 2737 } 2738 out: 2739 cb->args[0] = wp_idx; 2740 cb->args[1] = if_idx; 2741 2742 ret = skb->len; 2743 out_unlock: 2744 rtnl_unlock(); 2745 2746 return ret; 2747 } 2748 2749 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2750 { 2751 struct sk_buff *msg; 2752 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2753 struct wireless_dev *wdev = info->user_ptr[1]; 2754 2755 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2756 if (!msg) 2757 return -ENOMEM; 2758 2759 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2760 rdev, wdev, false) < 0) { 2761 nlmsg_free(msg); 2762 return -ENOBUFS; 2763 } 2764 2765 return genlmsg_reply(msg, info); 2766 } 2767 2768 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2769 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2770 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2771 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2772 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2773 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2774 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2775 }; 2776 2777 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2778 { 2779 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2780 int flag; 2781 2782 *mntrflags = 0; 2783 2784 if (!nla) 2785 return -EINVAL; 2786 2787 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla, 2788 mntr_flags_policy, NULL)) 2789 return -EINVAL; 2790 2791 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2792 if (flags[flag]) 2793 *mntrflags |= (1<<flag); 2794 2795 *mntrflags |= MONITOR_FLAG_CHANGED; 2796 2797 return 0; 2798 } 2799 2800 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev, 2801 enum nl80211_iftype type, 2802 struct genl_info *info, 2803 struct vif_params *params) 2804 { 2805 bool change = false; 2806 int err; 2807 2808 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2809 if (type != NL80211_IFTYPE_MONITOR) 2810 return -EINVAL; 2811 2812 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2813 ¶ms->flags); 2814 if (err) 2815 return err; 2816 2817 change = true; 2818 } 2819 2820 if (params->flags & MONITOR_FLAG_ACTIVE && 2821 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2822 return -EOPNOTSUPP; 2823 2824 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) { 2825 const u8 *mumimo_groups; 2826 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 2827 2828 if (type != NL80211_IFTYPE_MONITOR) 2829 return -EINVAL; 2830 2831 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 2832 return -EOPNOTSUPP; 2833 2834 mumimo_groups = 2835 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]); 2836 2837 /* bits 0 and 63 are reserved and must be zero */ 2838 if ((mumimo_groups[0] & BIT(0)) || 2839 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7))) 2840 return -EINVAL; 2841 2842 params->vht_mumimo_groups = mumimo_groups; 2843 change = true; 2844 } 2845 2846 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) { 2847 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 2848 2849 if (type != NL80211_IFTYPE_MONITOR) 2850 return -EINVAL; 2851 2852 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 2853 return -EOPNOTSUPP; 2854 2855 params->vht_mumimo_follow_addr = 2856 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]); 2857 change = true; 2858 } 2859 2860 return change ? 1 : 0; 2861 } 2862 2863 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2864 struct net_device *netdev, u8 use_4addr, 2865 enum nl80211_iftype iftype) 2866 { 2867 if (!use_4addr) { 2868 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2869 return -EBUSY; 2870 return 0; 2871 } 2872 2873 switch (iftype) { 2874 case NL80211_IFTYPE_AP_VLAN: 2875 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2876 return 0; 2877 break; 2878 case NL80211_IFTYPE_STATION: 2879 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2880 return 0; 2881 break; 2882 default: 2883 break; 2884 } 2885 2886 return -EOPNOTSUPP; 2887 } 2888 2889 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2890 { 2891 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2892 struct vif_params params; 2893 int err; 2894 enum nl80211_iftype otype, ntype; 2895 struct net_device *dev = info->user_ptr[1]; 2896 bool change = false; 2897 2898 memset(¶ms, 0, sizeof(params)); 2899 2900 otype = ntype = dev->ieee80211_ptr->iftype; 2901 2902 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2903 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2904 if (otype != ntype) 2905 change = true; 2906 if (ntype > NL80211_IFTYPE_MAX) 2907 return -EINVAL; 2908 } 2909 2910 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2911 struct wireless_dev *wdev = dev->ieee80211_ptr; 2912 2913 if (ntype != NL80211_IFTYPE_MESH_POINT) 2914 return -EINVAL; 2915 if (netif_running(dev)) 2916 return -EBUSY; 2917 2918 wdev_lock(wdev); 2919 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2920 IEEE80211_MAX_MESH_ID_LEN); 2921 wdev->mesh_id_up_len = 2922 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2923 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2924 wdev->mesh_id_up_len); 2925 wdev_unlock(wdev); 2926 } 2927 2928 if (info->attrs[NL80211_ATTR_4ADDR]) { 2929 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2930 change = true; 2931 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2932 if (err) 2933 return err; 2934 } else { 2935 params.use_4addr = -1; 2936 } 2937 2938 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms); 2939 if (err < 0) 2940 return err; 2941 if (err > 0) 2942 change = true; 2943 2944 if (change) 2945 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms); 2946 else 2947 err = 0; 2948 2949 if (!err && params.use_4addr != -1) 2950 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2951 2952 return err; 2953 } 2954 2955 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2956 { 2957 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2958 struct vif_params params; 2959 struct wireless_dev *wdev; 2960 struct sk_buff *msg; 2961 int err; 2962 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2963 2964 /* to avoid failing a new interface creation due to pending removal */ 2965 cfg80211_destroy_ifaces(rdev); 2966 2967 memset(¶ms, 0, sizeof(params)); 2968 2969 if (!info->attrs[NL80211_ATTR_IFNAME]) 2970 return -EINVAL; 2971 2972 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2973 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2974 if (type > NL80211_IFTYPE_MAX) 2975 return -EINVAL; 2976 } 2977 2978 if (!rdev->ops->add_virtual_intf || 2979 !(rdev->wiphy.interface_modes & (1 << type))) 2980 return -EOPNOTSUPP; 2981 2982 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN || 2983 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 2984 info->attrs[NL80211_ATTR_MAC]) { 2985 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2986 ETH_ALEN); 2987 if (!is_valid_ether_addr(params.macaddr)) 2988 return -EADDRNOTAVAIL; 2989 } 2990 2991 if (info->attrs[NL80211_ATTR_4ADDR]) { 2992 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2993 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2994 if (err) 2995 return err; 2996 } 2997 2998 err = nl80211_parse_mon_options(rdev, type, info, ¶ms); 2999 if (err < 0) 3000 return err; 3001 3002 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3003 if (!msg) 3004 return -ENOMEM; 3005 3006 wdev = rdev_add_virtual_intf(rdev, 3007 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 3008 NET_NAME_USER, type, ¶ms); 3009 if (WARN_ON(!wdev)) { 3010 nlmsg_free(msg); 3011 return -EPROTO; 3012 } else if (IS_ERR(wdev)) { 3013 nlmsg_free(msg); 3014 return PTR_ERR(wdev); 3015 } 3016 3017 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 3018 wdev->owner_nlportid = info->snd_portid; 3019 3020 switch (type) { 3021 case NL80211_IFTYPE_MESH_POINT: 3022 if (!info->attrs[NL80211_ATTR_MESH_ID]) 3023 break; 3024 wdev_lock(wdev); 3025 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 3026 IEEE80211_MAX_MESH_ID_LEN); 3027 wdev->mesh_id_up_len = 3028 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 3029 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 3030 wdev->mesh_id_up_len); 3031 wdev_unlock(wdev); 3032 break; 3033 case NL80211_IFTYPE_NAN: 3034 case NL80211_IFTYPE_P2P_DEVICE: 3035 /* 3036 * P2P Device and NAN do not have a netdev, so don't go 3037 * through the netdev notifier and must be added here 3038 */ 3039 mutex_init(&wdev->mtx); 3040 INIT_LIST_HEAD(&wdev->event_list); 3041 spin_lock_init(&wdev->event_lock); 3042 INIT_LIST_HEAD(&wdev->mgmt_registrations); 3043 spin_lock_init(&wdev->mgmt_registrations_lock); 3044 3045 wdev->identifier = ++rdev->wdev_id; 3046 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list); 3047 rdev->devlist_generation++; 3048 break; 3049 default: 3050 break; 3051 } 3052 3053 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 3054 rdev, wdev, false) < 0) { 3055 nlmsg_free(msg); 3056 return -ENOBUFS; 3057 } 3058 3059 /* 3060 * For wdevs which have no associated netdev object (e.g. of type 3061 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here. 3062 * For all other types, the event will be generated from the 3063 * netdev notifier 3064 */ 3065 if (!wdev->netdev) 3066 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE); 3067 3068 return genlmsg_reply(msg, info); 3069 } 3070 3071 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 3072 { 3073 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3074 struct wireless_dev *wdev = info->user_ptr[1]; 3075 3076 if (!rdev->ops->del_virtual_intf) 3077 return -EOPNOTSUPP; 3078 3079 /* 3080 * If we remove a wireless device without a netdev then clear 3081 * user_ptr[1] so that nl80211_post_doit won't dereference it 3082 * to check if it needs to do dev_put(). Otherwise it crashes 3083 * since the wdev has been freed, unlike with a netdev where 3084 * we need the dev_put() for the netdev to really be freed. 3085 */ 3086 if (!wdev->netdev) 3087 info->user_ptr[1] = NULL; 3088 3089 return rdev_del_virtual_intf(rdev, wdev); 3090 } 3091 3092 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 3093 { 3094 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3095 struct net_device *dev = info->user_ptr[1]; 3096 u16 noack_map; 3097 3098 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 3099 return -EINVAL; 3100 3101 if (!rdev->ops->set_noack_map) 3102 return -EOPNOTSUPP; 3103 3104 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 3105 3106 return rdev_set_noack_map(rdev, dev, noack_map); 3107 } 3108 3109 struct get_key_cookie { 3110 struct sk_buff *msg; 3111 int error; 3112 int idx; 3113 }; 3114 3115 static void get_key_callback(void *c, struct key_params *params) 3116 { 3117 struct nlattr *key; 3118 struct get_key_cookie *cookie = c; 3119 3120 if ((params->key && 3121 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 3122 params->key_len, params->key)) || 3123 (params->seq && 3124 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 3125 params->seq_len, params->seq)) || 3126 (params->cipher && 3127 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 3128 params->cipher))) 3129 goto nla_put_failure; 3130 3131 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 3132 if (!key) 3133 goto nla_put_failure; 3134 3135 if ((params->key && 3136 nla_put(cookie->msg, NL80211_KEY_DATA, 3137 params->key_len, params->key)) || 3138 (params->seq && 3139 nla_put(cookie->msg, NL80211_KEY_SEQ, 3140 params->seq_len, params->seq)) || 3141 (params->cipher && 3142 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 3143 params->cipher))) 3144 goto nla_put_failure; 3145 3146 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 3147 goto nla_put_failure; 3148 3149 nla_nest_end(cookie->msg, key); 3150 3151 return; 3152 nla_put_failure: 3153 cookie->error = 1; 3154 } 3155 3156 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 3157 { 3158 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3159 int err; 3160 struct net_device *dev = info->user_ptr[1]; 3161 u8 key_idx = 0; 3162 const u8 *mac_addr = NULL; 3163 bool pairwise; 3164 struct get_key_cookie cookie = { 3165 .error = 0, 3166 }; 3167 void *hdr; 3168 struct sk_buff *msg; 3169 3170 if (info->attrs[NL80211_ATTR_KEY_IDX]) 3171 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 3172 3173 if (key_idx > 5) 3174 return -EINVAL; 3175 3176 if (info->attrs[NL80211_ATTR_MAC]) 3177 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3178 3179 pairwise = !!mac_addr; 3180 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 3181 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 3182 3183 if (kt >= NUM_NL80211_KEYTYPES) 3184 return -EINVAL; 3185 if (kt != NL80211_KEYTYPE_GROUP && 3186 kt != NL80211_KEYTYPE_PAIRWISE) 3187 return -EINVAL; 3188 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 3189 } 3190 3191 if (!rdev->ops->get_key) 3192 return -EOPNOTSUPP; 3193 3194 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3195 return -ENOENT; 3196 3197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3198 if (!msg) 3199 return -ENOMEM; 3200 3201 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 3202 NL80211_CMD_NEW_KEY); 3203 if (!hdr) 3204 goto nla_put_failure; 3205 3206 cookie.msg = msg; 3207 cookie.idx = key_idx; 3208 3209 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3210 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 3211 goto nla_put_failure; 3212 if (mac_addr && 3213 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 3214 goto nla_put_failure; 3215 3216 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 3217 get_key_callback); 3218 3219 if (err) 3220 goto free_msg; 3221 3222 if (cookie.error) 3223 goto nla_put_failure; 3224 3225 genlmsg_end(msg, hdr); 3226 return genlmsg_reply(msg, info); 3227 3228 nla_put_failure: 3229 err = -ENOBUFS; 3230 free_msg: 3231 nlmsg_free(msg); 3232 return err; 3233 } 3234 3235 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 3236 { 3237 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3238 struct key_parse key; 3239 int err; 3240 struct net_device *dev = info->user_ptr[1]; 3241 3242 err = nl80211_parse_key(info, &key); 3243 if (err) 3244 return err; 3245 3246 if (key.idx < 0) 3247 return -EINVAL; 3248 3249 /* only support setting default key */ 3250 if (!key.def && !key.defmgmt) 3251 return -EINVAL; 3252 3253 wdev_lock(dev->ieee80211_ptr); 3254 3255 if (key.def) { 3256 if (!rdev->ops->set_default_key) { 3257 err = -EOPNOTSUPP; 3258 goto out; 3259 } 3260 3261 err = nl80211_key_allowed(dev->ieee80211_ptr); 3262 if (err) 3263 goto out; 3264 3265 err = rdev_set_default_key(rdev, dev, key.idx, 3266 key.def_uni, key.def_multi); 3267 3268 if (err) 3269 goto out; 3270 3271 #ifdef CONFIG_CFG80211_WEXT 3272 dev->ieee80211_ptr->wext.default_key = key.idx; 3273 #endif 3274 } else { 3275 if (key.def_uni || !key.def_multi) { 3276 err = -EINVAL; 3277 goto out; 3278 } 3279 3280 if (!rdev->ops->set_default_mgmt_key) { 3281 err = -EOPNOTSUPP; 3282 goto out; 3283 } 3284 3285 err = nl80211_key_allowed(dev->ieee80211_ptr); 3286 if (err) 3287 goto out; 3288 3289 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 3290 if (err) 3291 goto out; 3292 3293 #ifdef CONFIG_CFG80211_WEXT 3294 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 3295 #endif 3296 } 3297 3298 out: 3299 wdev_unlock(dev->ieee80211_ptr); 3300 3301 return err; 3302 } 3303 3304 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 3305 { 3306 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3307 int err; 3308 struct net_device *dev = info->user_ptr[1]; 3309 struct key_parse key; 3310 const u8 *mac_addr = NULL; 3311 3312 err = nl80211_parse_key(info, &key); 3313 if (err) 3314 return err; 3315 3316 if (!key.p.key) 3317 return -EINVAL; 3318 3319 if (info->attrs[NL80211_ATTR_MAC]) 3320 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3321 3322 if (key.type == -1) { 3323 if (mac_addr) 3324 key.type = NL80211_KEYTYPE_PAIRWISE; 3325 else 3326 key.type = NL80211_KEYTYPE_GROUP; 3327 } 3328 3329 /* for now */ 3330 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3331 key.type != NL80211_KEYTYPE_GROUP) 3332 return -EINVAL; 3333 3334 if (!rdev->ops->add_key) 3335 return -EOPNOTSUPP; 3336 3337 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 3338 key.type == NL80211_KEYTYPE_PAIRWISE, 3339 mac_addr)) 3340 return -EINVAL; 3341 3342 wdev_lock(dev->ieee80211_ptr); 3343 err = nl80211_key_allowed(dev->ieee80211_ptr); 3344 if (!err) 3345 err = rdev_add_key(rdev, dev, key.idx, 3346 key.type == NL80211_KEYTYPE_PAIRWISE, 3347 mac_addr, &key.p); 3348 wdev_unlock(dev->ieee80211_ptr); 3349 3350 return err; 3351 } 3352 3353 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 3354 { 3355 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3356 int err; 3357 struct net_device *dev = info->user_ptr[1]; 3358 u8 *mac_addr = NULL; 3359 struct key_parse key; 3360 3361 err = nl80211_parse_key(info, &key); 3362 if (err) 3363 return err; 3364 3365 if (info->attrs[NL80211_ATTR_MAC]) 3366 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3367 3368 if (key.type == -1) { 3369 if (mac_addr) 3370 key.type = NL80211_KEYTYPE_PAIRWISE; 3371 else 3372 key.type = NL80211_KEYTYPE_GROUP; 3373 } 3374 3375 /* for now */ 3376 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3377 key.type != NL80211_KEYTYPE_GROUP) 3378 return -EINVAL; 3379 3380 if (!rdev->ops->del_key) 3381 return -EOPNOTSUPP; 3382 3383 wdev_lock(dev->ieee80211_ptr); 3384 err = nl80211_key_allowed(dev->ieee80211_ptr); 3385 3386 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 3387 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3388 err = -ENOENT; 3389 3390 if (!err) 3391 err = rdev_del_key(rdev, dev, key.idx, 3392 key.type == NL80211_KEYTYPE_PAIRWISE, 3393 mac_addr); 3394 3395 #ifdef CONFIG_CFG80211_WEXT 3396 if (!err) { 3397 if (key.idx == dev->ieee80211_ptr->wext.default_key) 3398 dev->ieee80211_ptr->wext.default_key = -1; 3399 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 3400 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 3401 } 3402 #endif 3403 wdev_unlock(dev->ieee80211_ptr); 3404 3405 return err; 3406 } 3407 3408 /* This function returns an error or the number of nested attributes */ 3409 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 3410 { 3411 struct nlattr *attr; 3412 int n_entries = 0, tmp; 3413 3414 nla_for_each_nested(attr, nl_attr, tmp) { 3415 if (nla_len(attr) != ETH_ALEN) 3416 return -EINVAL; 3417 3418 n_entries++; 3419 } 3420 3421 return n_entries; 3422 } 3423 3424 /* 3425 * This function parses ACL information and allocates memory for ACL data. 3426 * On successful return, the calling function is responsible to free the 3427 * ACL buffer returned by this function. 3428 */ 3429 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 3430 struct genl_info *info) 3431 { 3432 enum nl80211_acl_policy acl_policy; 3433 struct nlattr *attr; 3434 struct cfg80211_acl_data *acl; 3435 int i = 0, n_entries, tmp; 3436 3437 if (!wiphy->max_acl_mac_addrs) 3438 return ERR_PTR(-EOPNOTSUPP); 3439 3440 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 3441 return ERR_PTR(-EINVAL); 3442 3443 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 3444 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 3445 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 3446 return ERR_PTR(-EINVAL); 3447 3448 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 3449 return ERR_PTR(-EINVAL); 3450 3451 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 3452 if (n_entries < 0) 3453 return ERR_PTR(n_entries); 3454 3455 if (n_entries > wiphy->max_acl_mac_addrs) 3456 return ERR_PTR(-ENOTSUPP); 3457 3458 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 3459 GFP_KERNEL); 3460 if (!acl) 3461 return ERR_PTR(-ENOMEM); 3462 3463 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 3464 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 3465 i++; 3466 } 3467 3468 acl->n_acl_entries = n_entries; 3469 acl->acl_policy = acl_policy; 3470 3471 return acl; 3472 } 3473 3474 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 3475 { 3476 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3477 struct net_device *dev = info->user_ptr[1]; 3478 struct cfg80211_acl_data *acl; 3479 int err; 3480 3481 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3482 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3483 return -EOPNOTSUPP; 3484 3485 if (!dev->ieee80211_ptr->beacon_interval) 3486 return -EINVAL; 3487 3488 acl = parse_acl_data(&rdev->wiphy, info); 3489 if (IS_ERR(acl)) 3490 return PTR_ERR(acl); 3491 3492 err = rdev_set_mac_acl(rdev, dev, acl); 3493 3494 kfree(acl); 3495 3496 return err; 3497 } 3498 3499 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 3500 u8 *rates, u8 rates_len) 3501 { 3502 u8 i; 3503 u32 mask = 0; 3504 3505 for (i = 0; i < rates_len; i++) { 3506 int rate = (rates[i] & 0x7f) * 5; 3507 int ridx; 3508 3509 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 3510 struct ieee80211_rate *srate = 3511 &sband->bitrates[ridx]; 3512 if (rate == srate->bitrate) { 3513 mask |= 1 << ridx; 3514 break; 3515 } 3516 } 3517 if (ridx == sband->n_bitrates) 3518 return 0; /* rate not found */ 3519 } 3520 3521 return mask; 3522 } 3523 3524 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 3525 u8 *rates, u8 rates_len, 3526 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 3527 { 3528 u8 i; 3529 3530 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 3531 3532 for (i = 0; i < rates_len; i++) { 3533 int ridx, rbit; 3534 3535 ridx = rates[i] / 8; 3536 rbit = BIT(rates[i] % 8); 3537 3538 /* check validity */ 3539 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 3540 return false; 3541 3542 /* check availability */ 3543 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 3544 mcs[ridx] |= rbit; 3545 else 3546 return false; 3547 } 3548 3549 return true; 3550 } 3551 3552 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 3553 { 3554 u16 mcs_mask = 0; 3555 3556 switch (vht_mcs_map) { 3557 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 3558 break; 3559 case IEEE80211_VHT_MCS_SUPPORT_0_7: 3560 mcs_mask = 0x00FF; 3561 break; 3562 case IEEE80211_VHT_MCS_SUPPORT_0_8: 3563 mcs_mask = 0x01FF; 3564 break; 3565 case IEEE80211_VHT_MCS_SUPPORT_0_9: 3566 mcs_mask = 0x03FF; 3567 break; 3568 default: 3569 break; 3570 } 3571 3572 return mcs_mask; 3573 } 3574 3575 static void vht_build_mcs_mask(u16 vht_mcs_map, 3576 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 3577 { 3578 u8 nss; 3579 3580 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 3581 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 3582 vht_mcs_map >>= 2; 3583 } 3584 } 3585 3586 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 3587 struct nl80211_txrate_vht *txrate, 3588 u16 mcs[NL80211_VHT_NSS_MAX]) 3589 { 3590 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 3591 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 3592 u8 i; 3593 3594 if (!sband->vht_cap.vht_supported) 3595 return false; 3596 3597 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 3598 3599 /* Build vht_mcs_mask from VHT capabilities */ 3600 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 3601 3602 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 3603 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 3604 mcs[i] = txrate->mcs[i]; 3605 else 3606 return false; 3607 } 3608 3609 return true; 3610 } 3611 3612 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 3613 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 3614 .len = NL80211_MAX_SUPP_RATES }, 3615 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 3616 .len = NL80211_MAX_SUPP_HT_RATES }, 3617 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 3618 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 3619 }; 3620 3621 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info, 3622 struct cfg80211_bitrate_mask *mask) 3623 { 3624 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 3625 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3626 int rem, i; 3627 struct nlattr *tx_rates; 3628 struct ieee80211_supported_band *sband; 3629 u16 vht_tx_mcs_map; 3630 3631 memset(mask, 0, sizeof(*mask)); 3632 /* Default to all rates enabled */ 3633 for (i = 0; i < NUM_NL80211_BANDS; i++) { 3634 sband = rdev->wiphy.bands[i]; 3635 3636 if (!sband) 3637 continue; 3638 3639 mask->control[i].legacy = (1 << sband->n_bitrates) - 1; 3640 memcpy(mask->control[i].ht_mcs, 3641 sband->ht_cap.mcs.rx_mask, 3642 sizeof(mask->control[i].ht_mcs)); 3643 3644 if (!sband->vht_cap.vht_supported) 3645 continue; 3646 3647 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 3648 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs); 3649 } 3650 3651 /* if no rates are given set it back to the defaults */ 3652 if (!info->attrs[NL80211_ATTR_TX_RATES]) 3653 goto out; 3654 3655 /* The nested attribute uses enum nl80211_band as the index. This maps 3656 * directly to the enum nl80211_band values used in cfg80211. 3657 */ 3658 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 3659 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 3660 enum nl80211_band band = nla_type(tx_rates); 3661 int err; 3662 3663 if (band < 0 || band >= NUM_NL80211_BANDS) 3664 return -EINVAL; 3665 sband = rdev->wiphy.bands[band]; 3666 if (sband == NULL) 3667 return -EINVAL; 3668 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates, 3669 nl80211_txattr_policy, info->extack); 3670 if (err) 3671 return err; 3672 if (tb[NL80211_TXRATE_LEGACY]) { 3673 mask->control[band].legacy = rateset_to_mask( 3674 sband, 3675 nla_data(tb[NL80211_TXRATE_LEGACY]), 3676 nla_len(tb[NL80211_TXRATE_LEGACY])); 3677 if ((mask->control[band].legacy == 0) && 3678 nla_len(tb[NL80211_TXRATE_LEGACY])) 3679 return -EINVAL; 3680 } 3681 if (tb[NL80211_TXRATE_HT]) { 3682 if (!ht_rateset_to_mask( 3683 sband, 3684 nla_data(tb[NL80211_TXRATE_HT]), 3685 nla_len(tb[NL80211_TXRATE_HT]), 3686 mask->control[band].ht_mcs)) 3687 return -EINVAL; 3688 } 3689 if (tb[NL80211_TXRATE_VHT]) { 3690 if (!vht_set_mcs_mask( 3691 sband, 3692 nla_data(tb[NL80211_TXRATE_VHT]), 3693 mask->control[band].vht_mcs)) 3694 return -EINVAL; 3695 } 3696 if (tb[NL80211_TXRATE_GI]) { 3697 mask->control[band].gi = 3698 nla_get_u8(tb[NL80211_TXRATE_GI]); 3699 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI) 3700 return -EINVAL; 3701 } 3702 3703 if (mask->control[band].legacy == 0) { 3704 /* don't allow empty legacy rates if HT or VHT 3705 * are not even supported. 3706 */ 3707 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 3708 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 3709 return -EINVAL; 3710 3711 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 3712 if (mask->control[band].ht_mcs[i]) 3713 goto out; 3714 3715 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 3716 if (mask->control[band].vht_mcs[i]) 3717 goto out; 3718 3719 /* legacy and mcs rates may not be both empty */ 3720 return -EINVAL; 3721 } 3722 } 3723 3724 out: 3725 return 0; 3726 } 3727 3728 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev, 3729 enum nl80211_band band, 3730 struct cfg80211_bitrate_mask *beacon_rate) 3731 { 3732 u32 count_ht, count_vht, i; 3733 u32 rate = beacon_rate->control[band].legacy; 3734 3735 /* Allow only one rate */ 3736 if (hweight32(rate) > 1) 3737 return -EINVAL; 3738 3739 count_ht = 0; 3740 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 3741 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) { 3742 return -EINVAL; 3743 } else if (beacon_rate->control[band].ht_mcs[i]) { 3744 count_ht++; 3745 if (count_ht > 1) 3746 return -EINVAL; 3747 } 3748 if (count_ht && rate) 3749 return -EINVAL; 3750 } 3751 3752 count_vht = 0; 3753 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 3754 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) { 3755 return -EINVAL; 3756 } else if (beacon_rate->control[band].vht_mcs[i]) { 3757 count_vht++; 3758 if (count_vht > 1) 3759 return -EINVAL; 3760 } 3761 if (count_vht && rate) 3762 return -EINVAL; 3763 } 3764 3765 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht)) 3766 return -EINVAL; 3767 3768 if (rate && 3769 !wiphy_ext_feature_isset(&rdev->wiphy, 3770 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) 3771 return -EINVAL; 3772 if (count_ht && 3773 !wiphy_ext_feature_isset(&rdev->wiphy, 3774 NL80211_EXT_FEATURE_BEACON_RATE_HT)) 3775 return -EINVAL; 3776 if (count_vht && 3777 !wiphy_ext_feature_isset(&rdev->wiphy, 3778 NL80211_EXT_FEATURE_BEACON_RATE_VHT)) 3779 return -EINVAL; 3780 3781 return 0; 3782 } 3783 3784 static int nl80211_parse_beacon(struct nlattr *attrs[], 3785 struct cfg80211_beacon_data *bcn) 3786 { 3787 bool haveinfo = false; 3788 3789 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 3790 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 3791 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 3792 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 3793 return -EINVAL; 3794 3795 memset(bcn, 0, sizeof(*bcn)); 3796 3797 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 3798 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 3799 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 3800 if (!bcn->head_len) 3801 return -EINVAL; 3802 haveinfo = true; 3803 } 3804 3805 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 3806 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 3807 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 3808 haveinfo = true; 3809 } 3810 3811 if (!haveinfo) 3812 return -EINVAL; 3813 3814 if (attrs[NL80211_ATTR_IE]) { 3815 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 3816 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3817 } 3818 3819 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3820 bcn->proberesp_ies = 3821 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3822 bcn->proberesp_ies_len = 3823 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3824 } 3825 3826 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3827 bcn->assocresp_ies = 3828 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3829 bcn->assocresp_ies_len = 3830 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3831 } 3832 3833 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3834 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3835 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3836 } 3837 3838 return 0; 3839 } 3840 3841 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params, 3842 const u8 *rates) 3843 { 3844 int i; 3845 3846 if (!rates) 3847 return; 3848 3849 for (i = 0; i < rates[1]; i++) { 3850 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 3851 params->ht_required = true; 3852 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY) 3853 params->vht_required = true; 3854 } 3855 } 3856 3857 /* 3858 * Since the nl80211 API didn't include, from the beginning, attributes about 3859 * HT/VHT requirements/capabilities, we parse them out of the IEs for the 3860 * benefit of drivers that rebuild IEs in the firmware. 3861 */ 3862 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params) 3863 { 3864 const struct cfg80211_beacon_data *bcn = ¶ms->beacon; 3865 size_t ies_len = bcn->tail_len; 3866 const u8 *ies = bcn->tail; 3867 const u8 *rates; 3868 const u8 *cap; 3869 3870 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len); 3871 nl80211_check_ap_rate_selectors(params, rates); 3872 3873 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len); 3874 nl80211_check_ap_rate_selectors(params, rates); 3875 3876 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len); 3877 if (cap && cap[1] >= sizeof(*params->ht_cap)) 3878 params->ht_cap = (void *)(cap + 2); 3879 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len); 3880 if (cap && cap[1] >= sizeof(*params->vht_cap)) 3881 params->vht_cap = (void *)(cap + 2); 3882 } 3883 3884 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3885 struct cfg80211_ap_settings *params) 3886 { 3887 struct wireless_dev *wdev; 3888 bool ret = false; 3889 3890 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 3891 if (wdev->iftype != NL80211_IFTYPE_AP && 3892 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3893 continue; 3894 3895 if (!wdev->preset_chandef.chan) 3896 continue; 3897 3898 params->chandef = wdev->preset_chandef; 3899 ret = true; 3900 break; 3901 } 3902 3903 return ret; 3904 } 3905 3906 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3907 enum nl80211_auth_type auth_type, 3908 enum nl80211_commands cmd) 3909 { 3910 if (auth_type > NL80211_AUTHTYPE_MAX) 3911 return false; 3912 3913 switch (cmd) { 3914 case NL80211_CMD_AUTHENTICATE: 3915 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3916 auth_type == NL80211_AUTHTYPE_SAE) 3917 return false; 3918 if (!wiphy_ext_feature_isset(&rdev->wiphy, 3919 NL80211_EXT_FEATURE_FILS_STA) && 3920 (auth_type == NL80211_AUTHTYPE_FILS_SK || 3921 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 3922 auth_type == NL80211_AUTHTYPE_FILS_PK)) 3923 return false; 3924 return true; 3925 case NL80211_CMD_CONNECT: 3926 /* SAE not supported yet */ 3927 if (auth_type == NL80211_AUTHTYPE_SAE) 3928 return false; 3929 /* FILS with SK PFS or PK not supported yet */ 3930 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 3931 auth_type == NL80211_AUTHTYPE_FILS_PK) 3932 return false; 3933 if (!wiphy_ext_feature_isset( 3934 &rdev->wiphy, 3935 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 3936 auth_type == NL80211_AUTHTYPE_FILS_SK) 3937 return false; 3938 return true; 3939 case NL80211_CMD_START_AP: 3940 /* SAE not supported yet */ 3941 if (auth_type == NL80211_AUTHTYPE_SAE) 3942 return false; 3943 /* FILS not supported yet */ 3944 if (auth_type == NL80211_AUTHTYPE_FILS_SK || 3945 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 3946 auth_type == NL80211_AUTHTYPE_FILS_PK) 3947 return false; 3948 return true; 3949 default: 3950 return false; 3951 } 3952 } 3953 3954 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3955 { 3956 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3957 struct net_device *dev = info->user_ptr[1]; 3958 struct wireless_dev *wdev = dev->ieee80211_ptr; 3959 struct cfg80211_ap_settings params; 3960 int err; 3961 3962 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3963 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3964 return -EOPNOTSUPP; 3965 3966 if (!rdev->ops->start_ap) 3967 return -EOPNOTSUPP; 3968 3969 if (wdev->beacon_interval) 3970 return -EALREADY; 3971 3972 memset(¶ms, 0, sizeof(params)); 3973 3974 /* these are required for START_AP */ 3975 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3976 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3977 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3978 return -EINVAL; 3979 3980 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3981 if (err) 3982 return err; 3983 3984 params.beacon_interval = 3985 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3986 params.dtim_period = 3987 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3988 3989 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype, 3990 params.beacon_interval); 3991 if (err) 3992 return err; 3993 3994 /* 3995 * In theory, some of these attributes should be required here 3996 * but since they were not used when the command was originally 3997 * added, keep them optional for old user space programs to let 3998 * them continue to work with drivers that do not need the 3999 * additional information -- drivers must check! 4000 */ 4001 if (info->attrs[NL80211_ATTR_SSID]) { 4002 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 4003 params.ssid_len = 4004 nla_len(info->attrs[NL80211_ATTR_SSID]); 4005 if (params.ssid_len == 0 || 4006 params.ssid_len > IEEE80211_MAX_SSID_LEN) 4007 return -EINVAL; 4008 } 4009 4010 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 4011 params.hidden_ssid = nla_get_u32( 4012 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 4013 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 4014 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 4015 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 4016 return -EINVAL; 4017 } 4018 4019 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 4020 4021 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 4022 params.auth_type = nla_get_u32( 4023 info->attrs[NL80211_ATTR_AUTH_TYPE]); 4024 if (!nl80211_valid_auth_type(rdev, params.auth_type, 4025 NL80211_CMD_START_AP)) 4026 return -EINVAL; 4027 } else 4028 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 4029 4030 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 4031 NL80211_MAX_NR_CIPHER_SUITES); 4032 if (err) 4033 return err; 4034 4035 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 4036 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 4037 return -EOPNOTSUPP; 4038 params.inactivity_timeout = nla_get_u16( 4039 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 4040 } 4041 4042 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4043 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4044 return -EINVAL; 4045 params.p2p_ctwindow = 4046 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4047 if (params.p2p_ctwindow > 127) 4048 return -EINVAL; 4049 if (params.p2p_ctwindow != 0 && 4050 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4051 return -EINVAL; 4052 } 4053 4054 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4055 u8 tmp; 4056 4057 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4058 return -EINVAL; 4059 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4060 if (tmp > 1) 4061 return -EINVAL; 4062 params.p2p_opp_ps = tmp; 4063 if (params.p2p_opp_ps != 0 && 4064 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4065 return -EINVAL; 4066 } 4067 4068 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 4069 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 4070 if (err) 4071 return err; 4072 } else if (wdev->preset_chandef.chan) { 4073 params.chandef = wdev->preset_chandef; 4074 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 4075 return -EINVAL; 4076 4077 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 4078 wdev->iftype)) 4079 return -EINVAL; 4080 4081 if (info->attrs[NL80211_ATTR_TX_RATES]) { 4082 err = nl80211_parse_tx_bitrate_mask(info, ¶ms.beacon_rate); 4083 if (err) 4084 return err; 4085 4086 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band, 4087 ¶ms.beacon_rate); 4088 if (err) 4089 return err; 4090 } 4091 4092 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 4093 params.smps_mode = 4094 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 4095 switch (params.smps_mode) { 4096 case NL80211_SMPS_OFF: 4097 break; 4098 case NL80211_SMPS_STATIC: 4099 if (!(rdev->wiphy.features & 4100 NL80211_FEATURE_STATIC_SMPS)) 4101 return -EINVAL; 4102 break; 4103 case NL80211_SMPS_DYNAMIC: 4104 if (!(rdev->wiphy.features & 4105 NL80211_FEATURE_DYNAMIC_SMPS)) 4106 return -EINVAL; 4107 break; 4108 default: 4109 return -EINVAL; 4110 } 4111 } else { 4112 params.smps_mode = NL80211_SMPS_OFF; 4113 } 4114 4115 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 4116 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) 4117 return -EOPNOTSUPP; 4118 4119 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 4120 params.acl = parse_acl_data(&rdev->wiphy, info); 4121 if (IS_ERR(params.acl)) 4122 return PTR_ERR(params.acl); 4123 } 4124 4125 nl80211_calculate_ap_params(¶ms); 4126 4127 wdev_lock(wdev); 4128 err = rdev_start_ap(rdev, dev, ¶ms); 4129 if (!err) { 4130 wdev->preset_chandef = params.chandef; 4131 wdev->beacon_interval = params.beacon_interval; 4132 wdev->chandef = params.chandef; 4133 wdev->ssid_len = params.ssid_len; 4134 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 4135 } 4136 wdev_unlock(wdev); 4137 4138 kfree(params.acl); 4139 4140 return err; 4141 } 4142 4143 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 4144 { 4145 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4146 struct net_device *dev = info->user_ptr[1]; 4147 struct wireless_dev *wdev = dev->ieee80211_ptr; 4148 struct cfg80211_beacon_data params; 4149 int err; 4150 4151 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4152 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4153 return -EOPNOTSUPP; 4154 4155 if (!rdev->ops->change_beacon) 4156 return -EOPNOTSUPP; 4157 4158 if (!wdev->beacon_interval) 4159 return -EINVAL; 4160 4161 err = nl80211_parse_beacon(info->attrs, ¶ms); 4162 if (err) 4163 return err; 4164 4165 wdev_lock(wdev); 4166 err = rdev_change_beacon(rdev, dev, ¶ms); 4167 wdev_unlock(wdev); 4168 4169 return err; 4170 } 4171 4172 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 4173 { 4174 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4175 struct net_device *dev = info->user_ptr[1]; 4176 4177 return cfg80211_stop_ap(rdev, dev, false); 4178 } 4179 4180 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 4181 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 4182 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 4183 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 4184 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 4185 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 4186 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 4187 }; 4188 4189 static int parse_station_flags(struct genl_info *info, 4190 enum nl80211_iftype iftype, 4191 struct station_parameters *params) 4192 { 4193 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 4194 struct nlattr *nla; 4195 int flag; 4196 4197 /* 4198 * Try parsing the new attribute first so userspace 4199 * can specify both for older kernels. 4200 */ 4201 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 4202 if (nla) { 4203 struct nl80211_sta_flag_update *sta_flags; 4204 4205 sta_flags = nla_data(nla); 4206 params->sta_flags_mask = sta_flags->mask; 4207 params->sta_flags_set = sta_flags->set; 4208 params->sta_flags_set &= params->sta_flags_mask; 4209 if ((params->sta_flags_mask | 4210 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 4211 return -EINVAL; 4212 return 0; 4213 } 4214 4215 /* if present, parse the old attribute */ 4216 4217 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 4218 if (!nla) 4219 return 0; 4220 4221 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla, 4222 sta_flags_policy, info->extack)) 4223 return -EINVAL; 4224 4225 /* 4226 * Only allow certain flags for interface types so that 4227 * other attributes are silently ignored. Remember that 4228 * this is backward compatibility code with old userspace 4229 * and shouldn't be hit in other cases anyway. 4230 */ 4231 switch (iftype) { 4232 case NL80211_IFTYPE_AP: 4233 case NL80211_IFTYPE_AP_VLAN: 4234 case NL80211_IFTYPE_P2P_GO: 4235 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 4236 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4237 BIT(NL80211_STA_FLAG_WME) | 4238 BIT(NL80211_STA_FLAG_MFP); 4239 break; 4240 case NL80211_IFTYPE_P2P_CLIENT: 4241 case NL80211_IFTYPE_STATION: 4242 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 4243 BIT(NL80211_STA_FLAG_TDLS_PEER); 4244 break; 4245 case NL80211_IFTYPE_MESH_POINT: 4246 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4247 BIT(NL80211_STA_FLAG_MFP) | 4248 BIT(NL80211_STA_FLAG_AUTHORIZED); 4249 default: 4250 return -EINVAL; 4251 } 4252 4253 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 4254 if (flags[flag]) { 4255 params->sta_flags_set |= (1<<flag); 4256 4257 /* no longer support new API additions in old API */ 4258 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 4259 return -EINVAL; 4260 } 4261 } 4262 4263 return 0; 4264 } 4265 4266 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 4267 int attr) 4268 { 4269 struct nlattr *rate; 4270 u32 bitrate; 4271 u16 bitrate_compat; 4272 enum nl80211_rate_info rate_flg; 4273 4274 rate = nla_nest_start(msg, attr); 4275 if (!rate) 4276 return false; 4277 4278 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 4279 bitrate = cfg80211_calculate_bitrate(info); 4280 /* report 16-bit bitrate only if we can */ 4281 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 4282 if (bitrate > 0 && 4283 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 4284 return false; 4285 if (bitrate_compat > 0 && 4286 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 4287 return false; 4288 4289 switch (info->bw) { 4290 case RATE_INFO_BW_5: 4291 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 4292 break; 4293 case RATE_INFO_BW_10: 4294 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 4295 break; 4296 default: 4297 WARN_ON(1); 4298 /* fall through */ 4299 case RATE_INFO_BW_20: 4300 rate_flg = 0; 4301 break; 4302 case RATE_INFO_BW_40: 4303 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 4304 break; 4305 case RATE_INFO_BW_80: 4306 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 4307 break; 4308 case RATE_INFO_BW_160: 4309 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 4310 break; 4311 } 4312 4313 if (rate_flg && nla_put_flag(msg, rate_flg)) 4314 return false; 4315 4316 if (info->flags & RATE_INFO_FLAGS_MCS) { 4317 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 4318 return false; 4319 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 4320 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 4321 return false; 4322 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 4323 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 4324 return false; 4325 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 4326 return false; 4327 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 4328 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 4329 return false; 4330 } 4331 4332 nla_nest_end(msg, rate); 4333 return true; 4334 } 4335 4336 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 4337 int id) 4338 { 4339 void *attr; 4340 int i = 0; 4341 4342 if (!mask) 4343 return true; 4344 4345 attr = nla_nest_start(msg, id); 4346 if (!attr) 4347 return false; 4348 4349 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 4350 if (!(mask & BIT(i))) 4351 continue; 4352 4353 if (nla_put_u8(msg, i, signal[i])) 4354 return false; 4355 } 4356 4357 nla_nest_end(msg, attr); 4358 4359 return true; 4360 } 4361 4362 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 4363 u32 seq, int flags, 4364 struct cfg80211_registered_device *rdev, 4365 struct net_device *dev, 4366 const u8 *mac_addr, struct station_info *sinfo) 4367 { 4368 void *hdr; 4369 struct nlattr *sinfoattr, *bss_param; 4370 4371 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 4372 if (!hdr) 4373 return -1; 4374 4375 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4376 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 4377 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 4378 goto nla_put_failure; 4379 4380 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 4381 if (!sinfoattr) 4382 goto nla_put_failure; 4383 4384 #define PUT_SINFO(attr, memb, type) do { \ 4385 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \ 4386 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \ 4387 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 4388 sinfo->memb)) \ 4389 goto nla_put_failure; \ 4390 } while (0) 4391 #define PUT_SINFO_U64(attr, memb) do { \ 4392 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \ 4393 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \ 4394 sinfo->memb, NL80211_STA_INFO_PAD)) \ 4395 goto nla_put_failure; \ 4396 } while (0) 4397 4398 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 4399 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 4400 4401 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) | 4402 BIT(NL80211_STA_INFO_RX_BYTES64)) && 4403 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 4404 (u32)sinfo->rx_bytes)) 4405 goto nla_put_failure; 4406 4407 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) | 4408 BIT(NL80211_STA_INFO_TX_BYTES64)) && 4409 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 4410 (u32)sinfo->tx_bytes)) 4411 goto nla_put_failure; 4412 4413 PUT_SINFO_U64(RX_BYTES64, rx_bytes); 4414 PUT_SINFO_U64(TX_BYTES64, tx_bytes); 4415 PUT_SINFO(LLID, llid, u16); 4416 PUT_SINFO(PLID, plid, u16); 4417 PUT_SINFO(PLINK_STATE, plink_state, u8); 4418 PUT_SINFO_U64(RX_DURATION, rx_duration); 4419 4420 switch (rdev->wiphy.signal_type) { 4421 case CFG80211_SIGNAL_TYPE_MBM: 4422 PUT_SINFO(SIGNAL, signal, u8); 4423 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 4424 break; 4425 default: 4426 break; 4427 } 4428 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) { 4429 if (!nl80211_put_signal(msg, sinfo->chains, 4430 sinfo->chain_signal, 4431 NL80211_STA_INFO_CHAIN_SIGNAL)) 4432 goto nla_put_failure; 4433 } 4434 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 4435 if (!nl80211_put_signal(msg, sinfo->chains, 4436 sinfo->chain_signal_avg, 4437 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 4438 goto nla_put_failure; 4439 } 4440 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) { 4441 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 4442 NL80211_STA_INFO_TX_BITRATE)) 4443 goto nla_put_failure; 4444 } 4445 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) { 4446 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 4447 NL80211_STA_INFO_RX_BITRATE)) 4448 goto nla_put_failure; 4449 } 4450 4451 PUT_SINFO(RX_PACKETS, rx_packets, u32); 4452 PUT_SINFO(TX_PACKETS, tx_packets, u32); 4453 PUT_SINFO(TX_RETRIES, tx_retries, u32); 4454 PUT_SINFO(TX_FAILED, tx_failed, u32); 4455 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 4456 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 4457 PUT_SINFO(LOCAL_PM, local_pm, u32); 4458 PUT_SINFO(PEER_PM, peer_pm, u32); 4459 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 4460 4461 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) { 4462 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 4463 if (!bss_param) 4464 goto nla_put_failure; 4465 4466 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 4467 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 4468 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 4469 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 4470 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 4471 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 4472 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 4473 sinfo->bss_param.dtim_period) || 4474 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 4475 sinfo->bss_param.beacon_interval)) 4476 goto nla_put_failure; 4477 4478 nla_nest_end(msg, bss_param); 4479 } 4480 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) && 4481 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 4482 sizeof(struct nl80211_sta_flag_update), 4483 &sinfo->sta_flags)) 4484 goto nla_put_failure; 4485 4486 PUT_SINFO_U64(T_OFFSET, t_offset); 4487 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc); 4488 PUT_SINFO_U64(BEACON_RX, rx_beacon); 4489 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 4490 4491 #undef PUT_SINFO 4492 #undef PUT_SINFO_U64 4493 4494 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) { 4495 struct nlattr *tidsattr; 4496 int tid; 4497 4498 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS); 4499 if (!tidsattr) 4500 goto nla_put_failure; 4501 4502 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 4503 struct cfg80211_tid_stats *tidstats; 4504 struct nlattr *tidattr; 4505 4506 tidstats = &sinfo->pertid[tid]; 4507 4508 if (!tidstats->filled) 4509 continue; 4510 4511 tidattr = nla_nest_start(msg, tid + 1); 4512 if (!tidattr) 4513 goto nla_put_failure; 4514 4515 #define PUT_TIDVAL_U64(attr, memb) do { \ 4516 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 4517 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \ 4518 tidstats->memb, NL80211_TID_STATS_PAD)) \ 4519 goto nla_put_failure; \ 4520 } while (0) 4521 4522 PUT_TIDVAL_U64(RX_MSDU, rx_msdu); 4523 PUT_TIDVAL_U64(TX_MSDU, tx_msdu); 4524 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries); 4525 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed); 4526 4527 #undef PUT_TIDVAL_U64 4528 nla_nest_end(msg, tidattr); 4529 } 4530 4531 nla_nest_end(msg, tidsattr); 4532 } 4533 4534 nla_nest_end(msg, sinfoattr); 4535 4536 if (sinfo->assoc_req_ies_len && 4537 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 4538 sinfo->assoc_req_ies)) 4539 goto nla_put_failure; 4540 4541 genlmsg_end(msg, hdr); 4542 return 0; 4543 4544 nla_put_failure: 4545 genlmsg_cancel(msg, hdr); 4546 return -EMSGSIZE; 4547 } 4548 4549 static int nl80211_dump_station(struct sk_buff *skb, 4550 struct netlink_callback *cb) 4551 { 4552 struct station_info sinfo; 4553 struct cfg80211_registered_device *rdev; 4554 struct wireless_dev *wdev; 4555 u8 mac_addr[ETH_ALEN]; 4556 int sta_idx = cb->args[2]; 4557 int err; 4558 4559 rtnl_lock(); 4560 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4561 if (err) 4562 goto out_err; 4563 4564 if (!wdev->netdev) { 4565 err = -EINVAL; 4566 goto out_err; 4567 } 4568 4569 if (!rdev->ops->dump_station) { 4570 err = -EOPNOTSUPP; 4571 goto out_err; 4572 } 4573 4574 while (1) { 4575 memset(&sinfo, 0, sizeof(sinfo)); 4576 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 4577 mac_addr, &sinfo); 4578 if (err == -ENOENT) 4579 break; 4580 if (err) 4581 goto out_err; 4582 4583 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 4584 NETLINK_CB(cb->skb).portid, 4585 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4586 rdev, wdev->netdev, mac_addr, 4587 &sinfo) < 0) 4588 goto out; 4589 4590 sta_idx++; 4591 } 4592 4593 out: 4594 cb->args[2] = sta_idx; 4595 err = skb->len; 4596 out_err: 4597 rtnl_unlock(); 4598 4599 return err; 4600 } 4601 4602 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 4603 { 4604 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4605 struct net_device *dev = info->user_ptr[1]; 4606 struct station_info sinfo; 4607 struct sk_buff *msg; 4608 u8 *mac_addr = NULL; 4609 int err; 4610 4611 memset(&sinfo, 0, sizeof(sinfo)); 4612 4613 if (!info->attrs[NL80211_ATTR_MAC]) 4614 return -EINVAL; 4615 4616 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4617 4618 if (!rdev->ops->get_station) 4619 return -EOPNOTSUPP; 4620 4621 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 4622 if (err) 4623 return err; 4624 4625 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4626 if (!msg) 4627 return -ENOMEM; 4628 4629 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 4630 info->snd_portid, info->snd_seq, 0, 4631 rdev, dev, mac_addr, &sinfo) < 0) { 4632 nlmsg_free(msg); 4633 return -ENOBUFS; 4634 } 4635 4636 return genlmsg_reply(msg, info); 4637 } 4638 4639 int cfg80211_check_station_change(struct wiphy *wiphy, 4640 struct station_parameters *params, 4641 enum cfg80211_station_type statype) 4642 { 4643 if (params->listen_interval != -1 && 4644 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4645 return -EINVAL; 4646 4647 if (params->support_p2p_ps != -1 && 4648 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4649 return -EINVAL; 4650 4651 if (params->aid && 4652 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) && 4653 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4654 return -EINVAL; 4655 4656 /* When you run into this, adjust the code below for the new flag */ 4657 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4658 4659 switch (statype) { 4660 case CFG80211_STA_MESH_PEER_KERNEL: 4661 case CFG80211_STA_MESH_PEER_USER: 4662 /* 4663 * No ignoring the TDLS flag here -- the userspace mesh 4664 * code doesn't have the bug of including TDLS in the 4665 * mask everywhere. 4666 */ 4667 if (params->sta_flags_mask & 4668 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4669 BIT(NL80211_STA_FLAG_MFP) | 4670 BIT(NL80211_STA_FLAG_AUTHORIZED))) 4671 return -EINVAL; 4672 break; 4673 case CFG80211_STA_TDLS_PEER_SETUP: 4674 case CFG80211_STA_TDLS_PEER_ACTIVE: 4675 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4676 return -EINVAL; 4677 /* ignore since it can't change */ 4678 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4679 break; 4680 default: 4681 /* disallow mesh-specific things */ 4682 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 4683 return -EINVAL; 4684 if (params->local_pm) 4685 return -EINVAL; 4686 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4687 return -EINVAL; 4688 } 4689 4690 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4691 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 4692 /* TDLS can't be set, ... */ 4693 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 4694 return -EINVAL; 4695 /* 4696 * ... but don't bother the driver with it. This works around 4697 * a hostapd/wpa_supplicant issue -- it always includes the 4698 * TLDS_PEER flag in the mask even for AP mode. 4699 */ 4700 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4701 } 4702 4703 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4704 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4705 /* reject other things that can't change */ 4706 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 4707 return -EINVAL; 4708 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 4709 return -EINVAL; 4710 if (params->supported_rates) 4711 return -EINVAL; 4712 if (params->ext_capab || params->ht_capa || params->vht_capa) 4713 return -EINVAL; 4714 } 4715 4716 if (statype != CFG80211_STA_AP_CLIENT && 4717 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4718 if (params->vlan) 4719 return -EINVAL; 4720 } 4721 4722 switch (statype) { 4723 case CFG80211_STA_AP_MLME_CLIENT: 4724 /* Use this only for authorizing/unauthorizing a station */ 4725 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 4726 return -EOPNOTSUPP; 4727 break; 4728 case CFG80211_STA_AP_CLIENT: 4729 case CFG80211_STA_AP_CLIENT_UNASSOC: 4730 /* accept only the listed bits */ 4731 if (params->sta_flags_mask & 4732 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4733 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4734 BIT(NL80211_STA_FLAG_ASSOCIATED) | 4735 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4736 BIT(NL80211_STA_FLAG_WME) | 4737 BIT(NL80211_STA_FLAG_MFP))) 4738 return -EINVAL; 4739 4740 /* but authenticated/associated only if driver handles it */ 4741 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4742 params->sta_flags_mask & 4743 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4744 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4745 return -EINVAL; 4746 break; 4747 case CFG80211_STA_IBSS: 4748 case CFG80211_STA_AP_STA: 4749 /* reject any changes other than AUTHORIZED */ 4750 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 4751 return -EINVAL; 4752 break; 4753 case CFG80211_STA_TDLS_PEER_SETUP: 4754 /* reject any changes other than AUTHORIZED or WME */ 4755 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4756 BIT(NL80211_STA_FLAG_WME))) 4757 return -EINVAL; 4758 /* force (at least) rates when authorizing */ 4759 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 4760 !params->supported_rates) 4761 return -EINVAL; 4762 break; 4763 case CFG80211_STA_TDLS_PEER_ACTIVE: 4764 /* reject any changes */ 4765 return -EINVAL; 4766 case CFG80211_STA_MESH_PEER_KERNEL: 4767 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4768 return -EINVAL; 4769 break; 4770 case CFG80211_STA_MESH_PEER_USER: 4771 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION && 4772 params->plink_action != NL80211_PLINK_ACTION_BLOCK) 4773 return -EINVAL; 4774 break; 4775 } 4776 4777 /* 4778 * Older kernel versions ignored this attribute entirely, so don't 4779 * reject attempts to update it but mark it as unused instead so the 4780 * driver won't look at the data. 4781 */ 4782 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC && 4783 statype != CFG80211_STA_TDLS_PEER_SETUP) 4784 params->opmode_notif_used = false; 4785 4786 return 0; 4787 } 4788 EXPORT_SYMBOL(cfg80211_check_station_change); 4789 4790 /* 4791 * Get vlan interface making sure it is running and on the right wiphy. 4792 */ 4793 static struct net_device *get_vlan(struct genl_info *info, 4794 struct cfg80211_registered_device *rdev) 4795 { 4796 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 4797 struct net_device *v; 4798 int ret; 4799 4800 if (!vlanattr) 4801 return NULL; 4802 4803 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 4804 if (!v) 4805 return ERR_PTR(-ENODEV); 4806 4807 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 4808 ret = -EINVAL; 4809 goto error; 4810 } 4811 4812 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4813 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4814 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 4815 ret = -EINVAL; 4816 goto error; 4817 } 4818 4819 if (!netif_running(v)) { 4820 ret = -ENETDOWN; 4821 goto error; 4822 } 4823 4824 return v; 4825 error: 4826 dev_put(v); 4827 return ERR_PTR(ret); 4828 } 4829 4830 static const struct nla_policy 4831 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 4832 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 4833 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 4834 }; 4835 4836 static int nl80211_parse_sta_wme(struct genl_info *info, 4837 struct station_parameters *params) 4838 { 4839 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 4840 struct nlattr *nla; 4841 int err; 4842 4843 /* parse WME attributes if present */ 4844 if (!info->attrs[NL80211_ATTR_STA_WME]) 4845 return 0; 4846 4847 nla = info->attrs[NL80211_ATTR_STA_WME]; 4848 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 4849 nl80211_sta_wme_policy, info->extack); 4850 if (err) 4851 return err; 4852 4853 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 4854 params->uapsd_queues = nla_get_u8( 4855 tb[NL80211_STA_WME_UAPSD_QUEUES]); 4856 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 4857 return -EINVAL; 4858 4859 if (tb[NL80211_STA_WME_MAX_SP]) 4860 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 4861 4862 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 4863 return -EINVAL; 4864 4865 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 4866 4867 return 0; 4868 } 4869 4870 static int nl80211_parse_sta_channel_info(struct genl_info *info, 4871 struct station_parameters *params) 4872 { 4873 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 4874 params->supported_channels = 4875 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4876 params->supported_channels_len = 4877 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4878 /* 4879 * Need to include at least one (first channel, number of 4880 * channels) tuple for each subband, and must have proper 4881 * tuples for the rest of the data as well. 4882 */ 4883 if (params->supported_channels_len < 2) 4884 return -EINVAL; 4885 if (params->supported_channels_len % 2) 4886 return -EINVAL; 4887 } 4888 4889 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 4890 params->supported_oper_classes = 4891 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4892 params->supported_oper_classes_len = 4893 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4894 /* 4895 * The value of the Length field of the Supported Operating 4896 * Classes element is between 2 and 253. 4897 */ 4898 if (params->supported_oper_classes_len < 2 || 4899 params->supported_oper_classes_len > 253) 4900 return -EINVAL; 4901 } 4902 return 0; 4903 } 4904 4905 static int nl80211_set_station_tdls(struct genl_info *info, 4906 struct station_parameters *params) 4907 { 4908 int err; 4909 /* Dummy STA entry gets updated once the peer capabilities are known */ 4910 if (info->attrs[NL80211_ATTR_PEER_AID]) 4911 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4912 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4913 params->ht_capa = 4914 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4915 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4916 params->vht_capa = 4917 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4918 4919 err = nl80211_parse_sta_channel_info(info, params); 4920 if (err) 4921 return err; 4922 4923 return nl80211_parse_sta_wme(info, params); 4924 } 4925 4926 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 4927 { 4928 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4929 struct net_device *dev = info->user_ptr[1]; 4930 struct station_parameters params; 4931 u8 *mac_addr; 4932 int err; 4933 4934 memset(¶ms, 0, sizeof(params)); 4935 4936 if (!rdev->ops->change_station) 4937 return -EOPNOTSUPP; 4938 4939 /* 4940 * AID and listen_interval properties can be set only for unassociated 4941 * station. Include these parameters here and will check them in 4942 * cfg80211_check_station_change(). 4943 */ 4944 if (info->attrs[NL80211_ATTR_STA_AID]) 4945 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4946 4947 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4948 params.listen_interval = 4949 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4950 else 4951 params.listen_interval = -1; 4952 4953 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 4954 u8 tmp; 4955 4956 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 4957 if (tmp >= NUM_NL80211_P2P_PS_STATUS) 4958 return -EINVAL; 4959 4960 params.support_p2p_ps = tmp; 4961 } else { 4962 params.support_p2p_ps = -1; 4963 } 4964 4965 if (!info->attrs[NL80211_ATTR_MAC]) 4966 return -EINVAL; 4967 4968 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4969 4970 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4971 params.supported_rates = 4972 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4973 params.supported_rates_len = 4974 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4975 } 4976 4977 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4978 params.capability = 4979 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4980 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4981 } 4982 4983 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4984 params.ext_capab = 4985 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4986 params.ext_capab_len = 4987 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4988 } 4989 4990 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4991 return -EINVAL; 4992 4993 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4994 params.plink_action = 4995 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4996 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4997 return -EINVAL; 4998 } 4999 5000 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 5001 params.plink_state = 5002 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 5003 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 5004 return -EINVAL; 5005 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) { 5006 params.peer_aid = nla_get_u16( 5007 info->attrs[NL80211_ATTR_MESH_PEER_AID]); 5008 if (params.peer_aid > IEEE80211_MAX_AID) 5009 return -EINVAL; 5010 } 5011 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 5012 } 5013 5014 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 5015 enum nl80211_mesh_power_mode pm = nla_get_u32( 5016 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 5017 5018 if (pm <= NL80211_MESH_POWER_UNKNOWN || 5019 pm > NL80211_MESH_POWER_MAX) 5020 return -EINVAL; 5021 5022 params.local_pm = pm; 5023 } 5024 5025 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 5026 params.opmode_notif_used = true; 5027 params.opmode_notif = 5028 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 5029 } 5030 5031 /* Include parameters for TDLS peer (will check later) */ 5032 err = nl80211_set_station_tdls(info, ¶ms); 5033 if (err) 5034 return err; 5035 5036 params.vlan = get_vlan(info, rdev); 5037 if (IS_ERR(params.vlan)) 5038 return PTR_ERR(params.vlan); 5039 5040 switch (dev->ieee80211_ptr->iftype) { 5041 case NL80211_IFTYPE_AP: 5042 case NL80211_IFTYPE_AP_VLAN: 5043 case NL80211_IFTYPE_P2P_GO: 5044 case NL80211_IFTYPE_P2P_CLIENT: 5045 case NL80211_IFTYPE_STATION: 5046 case NL80211_IFTYPE_ADHOC: 5047 case NL80211_IFTYPE_MESH_POINT: 5048 break; 5049 default: 5050 err = -EOPNOTSUPP; 5051 goto out_put_vlan; 5052 } 5053 5054 /* driver will call cfg80211_check_station_change() */ 5055 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 5056 5057 out_put_vlan: 5058 if (params.vlan) 5059 dev_put(params.vlan); 5060 5061 return err; 5062 } 5063 5064 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 5065 { 5066 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5067 int err; 5068 struct net_device *dev = info->user_ptr[1]; 5069 struct station_parameters params; 5070 u8 *mac_addr = NULL; 5071 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 5072 BIT(NL80211_STA_FLAG_ASSOCIATED); 5073 5074 memset(¶ms, 0, sizeof(params)); 5075 5076 if (!rdev->ops->add_station) 5077 return -EOPNOTSUPP; 5078 5079 if (!info->attrs[NL80211_ATTR_MAC]) 5080 return -EINVAL; 5081 5082 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 5083 return -EINVAL; 5084 5085 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 5086 return -EINVAL; 5087 5088 if (!info->attrs[NL80211_ATTR_STA_AID] && 5089 !info->attrs[NL80211_ATTR_PEER_AID]) 5090 return -EINVAL; 5091 5092 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 5093 params.supported_rates = 5094 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5095 params.supported_rates_len = 5096 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5097 params.listen_interval = 5098 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 5099 5100 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 5101 u8 tmp; 5102 5103 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 5104 if (tmp >= NUM_NL80211_P2P_PS_STATUS) 5105 return -EINVAL; 5106 5107 params.support_p2p_ps = tmp; 5108 } else { 5109 /* 5110 * if not specified, assume it's supported for P2P GO interface, 5111 * and is NOT supported for AP interface 5112 */ 5113 params.support_p2p_ps = 5114 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO; 5115 } 5116 5117 if (info->attrs[NL80211_ATTR_PEER_AID]) 5118 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 5119 else 5120 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 5121 if (!params.aid || params.aid > IEEE80211_MAX_AID) 5122 return -EINVAL; 5123 5124 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 5125 params.capability = 5126 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 5127 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 5128 } 5129 5130 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 5131 params.ext_capab = 5132 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5133 params.ext_capab_len = 5134 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5135 } 5136 5137 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 5138 params.ht_capa = 5139 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 5140 5141 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 5142 params.vht_capa = 5143 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 5144 5145 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 5146 params.opmode_notif_used = true; 5147 params.opmode_notif = 5148 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 5149 } 5150 5151 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 5152 params.plink_action = 5153 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 5154 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 5155 return -EINVAL; 5156 } 5157 5158 err = nl80211_parse_sta_channel_info(info, ¶ms); 5159 if (err) 5160 return err; 5161 5162 err = nl80211_parse_sta_wme(info, ¶ms); 5163 if (err) 5164 return err; 5165 5166 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 5167 return -EINVAL; 5168 5169 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 5170 * as userspace might just pass through the capabilities from the IEs 5171 * directly, rather than enforcing this restriction and returning an 5172 * error in this case. 5173 */ 5174 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 5175 params.ht_capa = NULL; 5176 params.vht_capa = NULL; 5177 } 5178 5179 /* When you run into this, adjust the code below for the new flag */ 5180 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 5181 5182 switch (dev->ieee80211_ptr->iftype) { 5183 case NL80211_IFTYPE_AP: 5184 case NL80211_IFTYPE_AP_VLAN: 5185 case NL80211_IFTYPE_P2P_GO: 5186 /* ignore WME attributes if iface/sta is not capable */ 5187 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 5188 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 5189 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5190 5191 /* TDLS peers cannot be added */ 5192 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 5193 info->attrs[NL80211_ATTR_PEER_AID]) 5194 return -EINVAL; 5195 /* but don't bother the driver with it */ 5196 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 5197 5198 /* allow authenticated/associated only if driver handles it */ 5199 if (!(rdev->wiphy.features & 5200 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 5201 params.sta_flags_mask & auth_assoc) 5202 return -EINVAL; 5203 5204 /* Older userspace, or userspace wanting to be compatible with 5205 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth 5206 * and assoc flags in the mask, but assumes the station will be 5207 * added as associated anyway since this was the required driver 5208 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was 5209 * introduced. 5210 * In order to not bother drivers with this quirk in the API 5211 * set the flags in both the mask and set for new stations in 5212 * this case. 5213 */ 5214 if (!(params.sta_flags_mask & auth_assoc)) { 5215 params.sta_flags_mask |= auth_assoc; 5216 params.sta_flags_set |= auth_assoc; 5217 } 5218 5219 /* must be last in here for error handling */ 5220 params.vlan = get_vlan(info, rdev); 5221 if (IS_ERR(params.vlan)) 5222 return PTR_ERR(params.vlan); 5223 break; 5224 case NL80211_IFTYPE_MESH_POINT: 5225 /* ignore uAPSD data */ 5226 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5227 5228 /* associated is disallowed */ 5229 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 5230 return -EINVAL; 5231 /* TDLS peers cannot be added */ 5232 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 5233 info->attrs[NL80211_ATTR_PEER_AID]) 5234 return -EINVAL; 5235 break; 5236 case NL80211_IFTYPE_STATION: 5237 case NL80211_IFTYPE_P2P_CLIENT: 5238 /* ignore uAPSD data */ 5239 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5240 5241 /* these are disallowed */ 5242 if (params.sta_flags_mask & 5243 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 5244 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 5245 return -EINVAL; 5246 /* Only TDLS peers can be added */ 5247 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 5248 return -EINVAL; 5249 /* Can only add if TDLS ... */ 5250 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 5251 return -EOPNOTSUPP; 5252 /* ... with external setup is supported */ 5253 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 5254 return -EOPNOTSUPP; 5255 /* 5256 * Older wpa_supplicant versions always mark the TDLS peer 5257 * as authorized, but it shouldn't yet be. 5258 */ 5259 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 5260 break; 5261 default: 5262 return -EOPNOTSUPP; 5263 } 5264 5265 /* be aware of params.vlan when changing code here */ 5266 5267 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 5268 5269 if (params.vlan) 5270 dev_put(params.vlan); 5271 return err; 5272 } 5273 5274 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 5275 { 5276 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5277 struct net_device *dev = info->user_ptr[1]; 5278 struct station_del_parameters params; 5279 5280 memset(¶ms, 0, sizeof(params)); 5281 5282 if (info->attrs[NL80211_ATTR_MAC]) 5283 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 5284 5285 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5286 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 5287 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 5288 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5289 return -EINVAL; 5290 5291 if (!rdev->ops->del_station) 5292 return -EOPNOTSUPP; 5293 5294 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 5295 params.subtype = 5296 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 5297 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 5298 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 5299 return -EINVAL; 5300 } else { 5301 /* Default to Deauthentication frame */ 5302 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 5303 } 5304 5305 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 5306 params.reason_code = 5307 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 5308 if (params.reason_code == 0) 5309 return -EINVAL; /* 0 is reserved */ 5310 } else { 5311 /* Default to reason code 2 */ 5312 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 5313 } 5314 5315 return rdev_del_station(rdev, dev, ¶ms); 5316 } 5317 5318 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 5319 int flags, struct net_device *dev, 5320 u8 *dst, u8 *next_hop, 5321 struct mpath_info *pinfo) 5322 { 5323 void *hdr; 5324 struct nlattr *pinfoattr; 5325 5326 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 5327 if (!hdr) 5328 return -1; 5329 5330 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5331 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 5332 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 5333 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 5334 goto nla_put_failure; 5335 5336 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 5337 if (!pinfoattr) 5338 goto nla_put_failure; 5339 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 5340 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 5341 pinfo->frame_qlen)) 5342 goto nla_put_failure; 5343 if (((pinfo->filled & MPATH_INFO_SN) && 5344 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 5345 ((pinfo->filled & MPATH_INFO_METRIC) && 5346 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 5347 pinfo->metric)) || 5348 ((pinfo->filled & MPATH_INFO_EXPTIME) && 5349 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 5350 pinfo->exptime)) || 5351 ((pinfo->filled & MPATH_INFO_FLAGS) && 5352 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 5353 pinfo->flags)) || 5354 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 5355 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 5356 pinfo->discovery_timeout)) || 5357 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 5358 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 5359 pinfo->discovery_retries))) 5360 goto nla_put_failure; 5361 5362 nla_nest_end(msg, pinfoattr); 5363 5364 genlmsg_end(msg, hdr); 5365 return 0; 5366 5367 nla_put_failure: 5368 genlmsg_cancel(msg, hdr); 5369 return -EMSGSIZE; 5370 } 5371 5372 static int nl80211_dump_mpath(struct sk_buff *skb, 5373 struct netlink_callback *cb) 5374 { 5375 struct mpath_info pinfo; 5376 struct cfg80211_registered_device *rdev; 5377 struct wireless_dev *wdev; 5378 u8 dst[ETH_ALEN]; 5379 u8 next_hop[ETH_ALEN]; 5380 int path_idx = cb->args[2]; 5381 int err; 5382 5383 rtnl_lock(); 5384 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5385 if (err) 5386 goto out_err; 5387 5388 if (!rdev->ops->dump_mpath) { 5389 err = -EOPNOTSUPP; 5390 goto out_err; 5391 } 5392 5393 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 5394 err = -EOPNOTSUPP; 5395 goto out_err; 5396 } 5397 5398 while (1) { 5399 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 5400 next_hop, &pinfo); 5401 if (err == -ENOENT) 5402 break; 5403 if (err) 5404 goto out_err; 5405 5406 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 5407 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5408 wdev->netdev, dst, next_hop, 5409 &pinfo) < 0) 5410 goto out; 5411 5412 path_idx++; 5413 } 5414 5415 out: 5416 cb->args[2] = path_idx; 5417 err = skb->len; 5418 out_err: 5419 rtnl_unlock(); 5420 return err; 5421 } 5422 5423 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 5424 { 5425 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5426 int err; 5427 struct net_device *dev = info->user_ptr[1]; 5428 struct mpath_info pinfo; 5429 struct sk_buff *msg; 5430 u8 *dst = NULL; 5431 u8 next_hop[ETH_ALEN]; 5432 5433 memset(&pinfo, 0, sizeof(pinfo)); 5434 5435 if (!info->attrs[NL80211_ATTR_MAC]) 5436 return -EINVAL; 5437 5438 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5439 5440 if (!rdev->ops->get_mpath) 5441 return -EOPNOTSUPP; 5442 5443 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5444 return -EOPNOTSUPP; 5445 5446 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 5447 if (err) 5448 return err; 5449 5450 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5451 if (!msg) 5452 return -ENOMEM; 5453 5454 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 5455 dev, dst, next_hop, &pinfo) < 0) { 5456 nlmsg_free(msg); 5457 return -ENOBUFS; 5458 } 5459 5460 return genlmsg_reply(msg, info); 5461 } 5462 5463 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 5464 { 5465 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5466 struct net_device *dev = info->user_ptr[1]; 5467 u8 *dst = NULL; 5468 u8 *next_hop = NULL; 5469 5470 if (!info->attrs[NL80211_ATTR_MAC]) 5471 return -EINVAL; 5472 5473 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 5474 return -EINVAL; 5475 5476 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5477 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 5478 5479 if (!rdev->ops->change_mpath) 5480 return -EOPNOTSUPP; 5481 5482 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5483 return -EOPNOTSUPP; 5484 5485 return rdev_change_mpath(rdev, dev, dst, next_hop); 5486 } 5487 5488 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 5489 { 5490 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5491 struct net_device *dev = info->user_ptr[1]; 5492 u8 *dst = NULL; 5493 u8 *next_hop = NULL; 5494 5495 if (!info->attrs[NL80211_ATTR_MAC]) 5496 return -EINVAL; 5497 5498 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 5499 return -EINVAL; 5500 5501 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5502 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 5503 5504 if (!rdev->ops->add_mpath) 5505 return -EOPNOTSUPP; 5506 5507 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5508 return -EOPNOTSUPP; 5509 5510 return rdev_add_mpath(rdev, dev, dst, next_hop); 5511 } 5512 5513 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 5514 { 5515 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5516 struct net_device *dev = info->user_ptr[1]; 5517 u8 *dst = NULL; 5518 5519 if (info->attrs[NL80211_ATTR_MAC]) 5520 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5521 5522 if (!rdev->ops->del_mpath) 5523 return -EOPNOTSUPP; 5524 5525 return rdev_del_mpath(rdev, dev, dst); 5526 } 5527 5528 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 5529 { 5530 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5531 int err; 5532 struct net_device *dev = info->user_ptr[1]; 5533 struct mpath_info pinfo; 5534 struct sk_buff *msg; 5535 u8 *dst = NULL; 5536 u8 mpp[ETH_ALEN]; 5537 5538 memset(&pinfo, 0, sizeof(pinfo)); 5539 5540 if (!info->attrs[NL80211_ATTR_MAC]) 5541 return -EINVAL; 5542 5543 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5544 5545 if (!rdev->ops->get_mpp) 5546 return -EOPNOTSUPP; 5547 5548 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5549 return -EOPNOTSUPP; 5550 5551 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 5552 if (err) 5553 return err; 5554 5555 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5556 if (!msg) 5557 return -ENOMEM; 5558 5559 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 5560 dev, dst, mpp, &pinfo) < 0) { 5561 nlmsg_free(msg); 5562 return -ENOBUFS; 5563 } 5564 5565 return genlmsg_reply(msg, info); 5566 } 5567 5568 static int nl80211_dump_mpp(struct sk_buff *skb, 5569 struct netlink_callback *cb) 5570 { 5571 struct mpath_info pinfo; 5572 struct cfg80211_registered_device *rdev; 5573 struct wireless_dev *wdev; 5574 u8 dst[ETH_ALEN]; 5575 u8 mpp[ETH_ALEN]; 5576 int path_idx = cb->args[2]; 5577 int err; 5578 5579 rtnl_lock(); 5580 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5581 if (err) 5582 goto out_err; 5583 5584 if (!rdev->ops->dump_mpp) { 5585 err = -EOPNOTSUPP; 5586 goto out_err; 5587 } 5588 5589 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 5590 err = -EOPNOTSUPP; 5591 goto out_err; 5592 } 5593 5594 while (1) { 5595 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 5596 mpp, &pinfo); 5597 if (err == -ENOENT) 5598 break; 5599 if (err) 5600 goto out_err; 5601 5602 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 5603 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5604 wdev->netdev, dst, mpp, 5605 &pinfo) < 0) 5606 goto out; 5607 5608 path_idx++; 5609 } 5610 5611 out: 5612 cb->args[2] = path_idx; 5613 err = skb->len; 5614 out_err: 5615 rtnl_unlock(); 5616 return err; 5617 } 5618 5619 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 5620 { 5621 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5622 struct net_device *dev = info->user_ptr[1]; 5623 struct wireless_dev *wdev = dev->ieee80211_ptr; 5624 struct bss_parameters params; 5625 int err; 5626 5627 memset(¶ms, 0, sizeof(params)); 5628 /* default to not changing parameters */ 5629 params.use_cts_prot = -1; 5630 params.use_short_preamble = -1; 5631 params.use_short_slot_time = -1; 5632 params.ap_isolate = -1; 5633 params.ht_opmode = -1; 5634 params.p2p_ctwindow = -1; 5635 params.p2p_opp_ps = -1; 5636 5637 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 5638 params.use_cts_prot = 5639 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 5640 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 5641 params.use_short_preamble = 5642 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 5643 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 5644 params.use_short_slot_time = 5645 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 5646 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 5647 params.basic_rates = 5648 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 5649 params.basic_rates_len = 5650 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 5651 } 5652 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 5653 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 5654 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 5655 params.ht_opmode = 5656 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 5657 5658 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 5659 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5660 return -EINVAL; 5661 params.p2p_ctwindow = 5662 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 5663 if (params.p2p_ctwindow < 0) 5664 return -EINVAL; 5665 if (params.p2p_ctwindow != 0 && 5666 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 5667 return -EINVAL; 5668 } 5669 5670 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 5671 u8 tmp; 5672 5673 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5674 return -EINVAL; 5675 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 5676 if (tmp > 1) 5677 return -EINVAL; 5678 params.p2p_opp_ps = tmp; 5679 if (params.p2p_opp_ps && 5680 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 5681 return -EINVAL; 5682 } 5683 5684 if (!rdev->ops->change_bss) 5685 return -EOPNOTSUPP; 5686 5687 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5688 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5689 return -EOPNOTSUPP; 5690 5691 wdev_lock(wdev); 5692 err = rdev_change_bss(rdev, dev, ¶ms); 5693 wdev_unlock(wdev); 5694 5695 return err; 5696 } 5697 5698 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 5699 { 5700 char *data = NULL; 5701 bool is_indoor; 5702 enum nl80211_user_reg_hint_type user_reg_hint_type; 5703 u32 owner_nlportid; 5704 5705 /* 5706 * You should only get this when cfg80211 hasn't yet initialized 5707 * completely when built-in to the kernel right between the time 5708 * window between nl80211_init() and regulatory_init(), if that is 5709 * even possible. 5710 */ 5711 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 5712 return -EINPROGRESS; 5713 5714 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 5715 user_reg_hint_type = 5716 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 5717 else 5718 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 5719 5720 switch (user_reg_hint_type) { 5721 case NL80211_USER_REG_HINT_USER: 5722 case NL80211_USER_REG_HINT_CELL_BASE: 5723 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5724 return -EINVAL; 5725 5726 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5727 return regulatory_hint_user(data, user_reg_hint_type); 5728 case NL80211_USER_REG_HINT_INDOOR: 5729 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 5730 owner_nlportid = info->snd_portid; 5731 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR]; 5732 } else { 5733 owner_nlportid = 0; 5734 is_indoor = true; 5735 } 5736 5737 return regulatory_hint_indoor(is_indoor, owner_nlportid); 5738 default: 5739 return -EINVAL; 5740 } 5741 } 5742 5743 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info) 5744 { 5745 return reg_reload_regdb(); 5746 } 5747 5748 static int nl80211_get_mesh_config(struct sk_buff *skb, 5749 struct genl_info *info) 5750 { 5751 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5752 struct net_device *dev = info->user_ptr[1]; 5753 struct wireless_dev *wdev = dev->ieee80211_ptr; 5754 struct mesh_config cur_params; 5755 int err = 0; 5756 void *hdr; 5757 struct nlattr *pinfoattr; 5758 struct sk_buff *msg; 5759 5760 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5761 return -EOPNOTSUPP; 5762 5763 if (!rdev->ops->get_mesh_config) 5764 return -EOPNOTSUPP; 5765 5766 wdev_lock(wdev); 5767 /* If not connected, get default parameters */ 5768 if (!wdev->mesh_id_len) 5769 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 5770 else 5771 err = rdev_get_mesh_config(rdev, dev, &cur_params); 5772 wdev_unlock(wdev); 5773 5774 if (err) 5775 return err; 5776 5777 /* Draw up a netlink message to send back */ 5778 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5779 if (!msg) 5780 return -ENOMEM; 5781 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5782 NL80211_CMD_GET_MESH_CONFIG); 5783 if (!hdr) 5784 goto out; 5785 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 5786 if (!pinfoattr) 5787 goto nla_put_failure; 5788 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5789 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 5790 cur_params.dot11MeshRetryTimeout) || 5791 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5792 cur_params.dot11MeshConfirmTimeout) || 5793 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 5794 cur_params.dot11MeshHoldingTimeout) || 5795 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 5796 cur_params.dot11MeshMaxPeerLinks) || 5797 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 5798 cur_params.dot11MeshMaxRetries) || 5799 nla_put_u8(msg, NL80211_MESHCONF_TTL, 5800 cur_params.dot11MeshTTL) || 5801 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 5802 cur_params.element_ttl) || 5803 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5804 cur_params.auto_open_plinks) || 5805 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5806 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 5807 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5808 cur_params.dot11MeshHWMPmaxPREQretries) || 5809 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 5810 cur_params.path_refresh_time) || 5811 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5812 cur_params.min_discovery_timeout) || 5813 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5814 cur_params.dot11MeshHWMPactivePathTimeout) || 5815 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5816 cur_params.dot11MeshHWMPpreqMinInterval) || 5817 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5818 cur_params.dot11MeshHWMPperrMinInterval) || 5819 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5820 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 5821 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 5822 cur_params.dot11MeshHWMPRootMode) || 5823 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5824 cur_params.dot11MeshHWMPRannInterval) || 5825 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5826 cur_params.dot11MeshGateAnnouncementProtocol) || 5827 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 5828 cur_params.dot11MeshForwarding) || 5829 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 5830 cur_params.rssi_threshold) || 5831 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 5832 cur_params.ht_opmode) || 5833 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5834 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 5835 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5836 cur_params.dot11MeshHWMProotInterval) || 5837 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5838 cur_params.dot11MeshHWMPconfirmationInterval) || 5839 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 5840 cur_params.power_mode) || 5841 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 5842 cur_params.dot11MeshAwakeWindowDuration) || 5843 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 5844 cur_params.plink_timeout)) 5845 goto nla_put_failure; 5846 nla_nest_end(msg, pinfoattr); 5847 genlmsg_end(msg, hdr); 5848 return genlmsg_reply(msg, info); 5849 5850 nla_put_failure: 5851 genlmsg_cancel(msg, hdr); 5852 out: 5853 nlmsg_free(msg); 5854 return -ENOBUFS; 5855 } 5856 5857 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 5858 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 5859 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 5860 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 5861 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 5862 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 5863 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 5864 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 5865 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 5866 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 5867 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 5868 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 5869 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 5870 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 5871 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 5872 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 5873 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 5874 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 5875 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 5876 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 5877 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 5878 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 5879 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 5880 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 5881 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 5882 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 5883 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 5884 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 5885 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 5886 }; 5887 5888 static const struct nla_policy 5889 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 5890 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 5891 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 5892 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 5893 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 5894 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 5895 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 5896 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 5897 .len = IEEE80211_MAX_DATA_LEN }, 5898 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 5899 }; 5900 5901 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out) 5902 { 5903 u8 val = nla_get_u8(nla); 5904 if (val < min || val > max) 5905 return -EINVAL; 5906 *out = val; 5907 return 0; 5908 } 5909 5910 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out) 5911 { 5912 u8 val = nla_get_u8(nla); 5913 if (val < min || val > max) 5914 return -EINVAL; 5915 *out = val; 5916 return 0; 5917 } 5918 5919 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out) 5920 { 5921 u16 val = nla_get_u16(nla); 5922 if (val < min || val > max) 5923 return -EINVAL; 5924 *out = val; 5925 return 0; 5926 } 5927 5928 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out) 5929 { 5930 u32 val = nla_get_u32(nla); 5931 if (val < min || val > max) 5932 return -EINVAL; 5933 *out = val; 5934 return 0; 5935 } 5936 5937 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out) 5938 { 5939 s32 val = nla_get_s32(nla); 5940 if (val < min || val > max) 5941 return -EINVAL; 5942 *out = val; 5943 return 0; 5944 } 5945 5946 static int nl80211_check_power_mode(const struct nlattr *nla, 5947 enum nl80211_mesh_power_mode min, 5948 enum nl80211_mesh_power_mode max, 5949 enum nl80211_mesh_power_mode *out) 5950 { 5951 u32 val = nla_get_u32(nla); 5952 if (val < min || val > max) 5953 return -EINVAL; 5954 *out = val; 5955 return 0; 5956 } 5957 5958 static int nl80211_parse_mesh_config(struct genl_info *info, 5959 struct mesh_config *cfg, 5960 u32 *mask_out) 5961 { 5962 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 5963 u32 mask = 0; 5964 u16 ht_opmode; 5965 5966 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 5967 do { \ 5968 if (tb[attr]) { \ 5969 if (fn(tb[attr], min, max, &cfg->param)) \ 5970 return -EINVAL; \ 5971 mask |= (1 << (attr - 1)); \ 5972 } \ 5973 } while (0) 5974 5975 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 5976 return -EINVAL; 5977 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 5978 info->attrs[NL80211_ATTR_MESH_CONFIG], 5979 nl80211_meshconf_params_policy, info->extack)) 5980 return -EINVAL; 5981 5982 /* This makes sure that there aren't more than 32 mesh config 5983 * parameters (otherwise our bitfield scheme would not work.) */ 5984 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 5985 5986 /* Fill in the params struct */ 5987 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 5988 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 5989 nl80211_check_u16); 5990 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 5991 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5992 nl80211_check_u16); 5993 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 5994 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 5995 nl80211_check_u16); 5996 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 5997 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 5998 nl80211_check_u16); 5999 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 6000 mask, NL80211_MESHCONF_MAX_RETRIES, 6001 nl80211_check_u8); 6002 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 6003 mask, NL80211_MESHCONF_TTL, nl80211_check_u8); 6004 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 6005 mask, NL80211_MESHCONF_ELEMENT_TTL, 6006 nl80211_check_u8); 6007 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 6008 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 6009 nl80211_check_bool); 6010 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 6011 1, 255, mask, 6012 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 6013 nl80211_check_u32); 6014 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 6015 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 6016 nl80211_check_u8); 6017 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 6018 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 6019 nl80211_check_u32); 6020 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 6021 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 6022 nl80211_check_u16); 6023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 6024 1, 65535, mask, 6025 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 6026 nl80211_check_u32); 6027 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 6028 1, 65535, mask, 6029 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 6030 nl80211_check_u16); 6031 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 6032 1, 65535, mask, 6033 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 6034 nl80211_check_u16); 6035 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 6036 dot11MeshHWMPnetDiameterTraversalTime, 6037 1, 65535, mask, 6038 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 6039 nl80211_check_u16); 6040 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 6041 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 6042 nl80211_check_u8); 6043 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 6044 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 6045 nl80211_check_u16); 6046 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 6047 dot11MeshGateAnnouncementProtocol, 0, 1, 6048 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 6049 nl80211_check_bool); 6050 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 6051 mask, NL80211_MESHCONF_FORWARDING, 6052 nl80211_check_bool); 6053 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 6054 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 6055 nl80211_check_s32); 6056 /* 6057 * Check HT operation mode based on 6058 * IEEE 802.11 2012 8.4.2.59 HT Operation element. 6059 */ 6060 if (tb[NL80211_MESHCONF_HT_OPMODE]) { 6061 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]); 6062 6063 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION | 6064 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT | 6065 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 6066 return -EINVAL; 6067 6068 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) && 6069 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 6070 return -EINVAL; 6071 6072 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) { 6073 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 6074 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 6075 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT) 6076 return -EINVAL; 6077 break; 6078 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 6079 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 6080 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 6081 return -EINVAL; 6082 break; 6083 } 6084 cfg->ht_opmode = ht_opmode; 6085 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1)); 6086 } 6087 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 6088 1, 65535, mask, 6089 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 6090 nl80211_check_u32); 6091 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 6092 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 6093 nl80211_check_u16); 6094 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 6095 dot11MeshHWMPconfirmationInterval, 6096 1, 65535, mask, 6097 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 6098 nl80211_check_u16); 6099 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 6100 NL80211_MESH_POWER_ACTIVE, 6101 NL80211_MESH_POWER_MAX, 6102 mask, NL80211_MESHCONF_POWER_MODE, 6103 nl80211_check_power_mode); 6104 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 6105 0, 65535, mask, 6106 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16); 6107 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff, 6108 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 6109 nl80211_check_u32); 6110 if (mask_out) 6111 *mask_out = mask; 6112 6113 return 0; 6114 6115 #undef FILL_IN_MESH_PARAM_IF_SET 6116 } 6117 6118 static int nl80211_parse_mesh_setup(struct genl_info *info, 6119 struct mesh_setup *setup) 6120 { 6121 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6122 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 6123 6124 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 6125 return -EINVAL; 6126 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 6127 info->attrs[NL80211_ATTR_MESH_SETUP], 6128 nl80211_mesh_setup_params_policy, info->extack)) 6129 return -EINVAL; 6130 6131 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 6132 setup->sync_method = 6133 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 6134 IEEE80211_SYNC_METHOD_VENDOR : 6135 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 6136 6137 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 6138 setup->path_sel_proto = 6139 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 6140 IEEE80211_PATH_PROTOCOL_VENDOR : 6141 IEEE80211_PATH_PROTOCOL_HWMP; 6142 6143 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 6144 setup->path_metric = 6145 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 6146 IEEE80211_PATH_METRIC_VENDOR : 6147 IEEE80211_PATH_METRIC_AIRTIME; 6148 6149 if (tb[NL80211_MESH_SETUP_IE]) { 6150 struct nlattr *ieattr = 6151 tb[NL80211_MESH_SETUP_IE]; 6152 if (!is_valid_ie_attr(ieattr)) 6153 return -EINVAL; 6154 setup->ie = nla_data(ieattr); 6155 setup->ie_len = nla_len(ieattr); 6156 } 6157 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 6158 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 6159 return -EINVAL; 6160 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 6161 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 6162 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 6163 if (setup->is_secure) 6164 setup->user_mpm = true; 6165 6166 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 6167 if (!setup->user_mpm) 6168 return -EINVAL; 6169 setup->auth_id = 6170 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 6171 } 6172 6173 return 0; 6174 } 6175 6176 static int nl80211_update_mesh_config(struct sk_buff *skb, 6177 struct genl_info *info) 6178 { 6179 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6180 struct net_device *dev = info->user_ptr[1]; 6181 struct wireless_dev *wdev = dev->ieee80211_ptr; 6182 struct mesh_config cfg; 6183 u32 mask; 6184 int err; 6185 6186 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 6187 return -EOPNOTSUPP; 6188 6189 if (!rdev->ops->update_mesh_config) 6190 return -EOPNOTSUPP; 6191 6192 err = nl80211_parse_mesh_config(info, &cfg, &mask); 6193 if (err) 6194 return err; 6195 6196 wdev_lock(wdev); 6197 if (!wdev->mesh_id_len) 6198 err = -ENOLINK; 6199 6200 if (!err) 6201 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 6202 6203 wdev_unlock(wdev); 6204 6205 return err; 6206 } 6207 6208 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 6209 struct sk_buff *msg) 6210 { 6211 struct nlattr *nl_reg_rules; 6212 unsigned int i; 6213 6214 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 6215 (regdom->dfs_region && 6216 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 6217 goto nla_put_failure; 6218 6219 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 6220 if (!nl_reg_rules) 6221 goto nla_put_failure; 6222 6223 for (i = 0; i < regdom->n_reg_rules; i++) { 6224 struct nlattr *nl_reg_rule; 6225 const struct ieee80211_reg_rule *reg_rule; 6226 const struct ieee80211_freq_range *freq_range; 6227 const struct ieee80211_power_rule *power_rule; 6228 unsigned int max_bandwidth_khz; 6229 6230 reg_rule = ®dom->reg_rules[i]; 6231 freq_range = ®_rule->freq_range; 6232 power_rule = ®_rule->power_rule; 6233 6234 nl_reg_rule = nla_nest_start(msg, i); 6235 if (!nl_reg_rule) 6236 goto nla_put_failure; 6237 6238 max_bandwidth_khz = freq_range->max_bandwidth_khz; 6239 if (!max_bandwidth_khz) 6240 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 6241 reg_rule); 6242 6243 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 6244 reg_rule->flags) || 6245 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 6246 freq_range->start_freq_khz) || 6247 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 6248 freq_range->end_freq_khz) || 6249 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 6250 max_bandwidth_khz) || 6251 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 6252 power_rule->max_antenna_gain) || 6253 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 6254 power_rule->max_eirp) || 6255 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 6256 reg_rule->dfs_cac_ms)) 6257 goto nla_put_failure; 6258 6259 nla_nest_end(msg, nl_reg_rule); 6260 } 6261 6262 nla_nest_end(msg, nl_reg_rules); 6263 return 0; 6264 6265 nla_put_failure: 6266 return -EMSGSIZE; 6267 } 6268 6269 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 6270 { 6271 const struct ieee80211_regdomain *regdom = NULL; 6272 struct cfg80211_registered_device *rdev; 6273 struct wiphy *wiphy = NULL; 6274 struct sk_buff *msg; 6275 void *hdr; 6276 6277 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6278 if (!msg) 6279 return -ENOBUFS; 6280 6281 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 6282 NL80211_CMD_GET_REG); 6283 if (!hdr) 6284 goto put_failure; 6285 6286 if (info->attrs[NL80211_ATTR_WIPHY]) { 6287 bool self_managed; 6288 6289 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 6290 if (IS_ERR(rdev)) { 6291 nlmsg_free(msg); 6292 return PTR_ERR(rdev); 6293 } 6294 6295 wiphy = &rdev->wiphy; 6296 self_managed = wiphy->regulatory_flags & 6297 REGULATORY_WIPHY_SELF_MANAGED; 6298 regdom = get_wiphy_regdom(wiphy); 6299 6300 /* a self-managed-reg device must have a private regdom */ 6301 if (WARN_ON(!regdom && self_managed)) { 6302 nlmsg_free(msg); 6303 return -EINVAL; 6304 } 6305 6306 if (regdom && 6307 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 6308 goto nla_put_failure; 6309 } 6310 6311 if (!wiphy && reg_last_request_cell_base() && 6312 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 6313 NL80211_USER_REG_HINT_CELL_BASE)) 6314 goto nla_put_failure; 6315 6316 rcu_read_lock(); 6317 6318 if (!regdom) 6319 regdom = rcu_dereference(cfg80211_regdomain); 6320 6321 if (nl80211_put_regdom(regdom, msg)) 6322 goto nla_put_failure_rcu; 6323 6324 rcu_read_unlock(); 6325 6326 genlmsg_end(msg, hdr); 6327 return genlmsg_reply(msg, info); 6328 6329 nla_put_failure_rcu: 6330 rcu_read_unlock(); 6331 nla_put_failure: 6332 genlmsg_cancel(msg, hdr); 6333 put_failure: 6334 nlmsg_free(msg); 6335 return -EMSGSIZE; 6336 } 6337 6338 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 6339 u32 seq, int flags, struct wiphy *wiphy, 6340 const struct ieee80211_regdomain *regdom) 6341 { 6342 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 6343 NL80211_CMD_GET_REG); 6344 6345 if (!hdr) 6346 return -1; 6347 6348 genl_dump_check_consistent(cb, hdr); 6349 6350 if (nl80211_put_regdom(regdom, msg)) 6351 goto nla_put_failure; 6352 6353 if (!wiphy && reg_last_request_cell_base() && 6354 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 6355 NL80211_USER_REG_HINT_CELL_BASE)) 6356 goto nla_put_failure; 6357 6358 if (wiphy && 6359 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 6360 goto nla_put_failure; 6361 6362 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 6363 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 6364 goto nla_put_failure; 6365 6366 genlmsg_end(msg, hdr); 6367 return 0; 6368 6369 nla_put_failure: 6370 genlmsg_cancel(msg, hdr); 6371 return -EMSGSIZE; 6372 } 6373 6374 static int nl80211_get_reg_dump(struct sk_buff *skb, 6375 struct netlink_callback *cb) 6376 { 6377 const struct ieee80211_regdomain *regdom = NULL; 6378 struct cfg80211_registered_device *rdev; 6379 int err, reg_idx, start = cb->args[2]; 6380 6381 rtnl_lock(); 6382 6383 if (cfg80211_regdomain && start == 0) { 6384 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 6385 NLM_F_MULTI, NULL, 6386 rtnl_dereference(cfg80211_regdomain)); 6387 if (err < 0) 6388 goto out_err; 6389 } 6390 6391 /* the global regdom is idx 0 */ 6392 reg_idx = 1; 6393 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 6394 regdom = get_wiphy_regdom(&rdev->wiphy); 6395 if (!regdom) 6396 continue; 6397 6398 if (++reg_idx <= start) 6399 continue; 6400 6401 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 6402 NLM_F_MULTI, &rdev->wiphy, regdom); 6403 if (err < 0) { 6404 reg_idx--; 6405 break; 6406 } 6407 } 6408 6409 cb->args[2] = reg_idx; 6410 err = skb->len; 6411 out_err: 6412 rtnl_unlock(); 6413 return err; 6414 } 6415 6416 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 6417 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 6418 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 6419 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 6420 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 6421 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 6422 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 6423 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 6424 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 6425 }; 6426 6427 static int parse_reg_rule(struct nlattr *tb[], 6428 struct ieee80211_reg_rule *reg_rule) 6429 { 6430 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 6431 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 6432 6433 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 6434 return -EINVAL; 6435 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 6436 return -EINVAL; 6437 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 6438 return -EINVAL; 6439 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 6440 return -EINVAL; 6441 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 6442 return -EINVAL; 6443 6444 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 6445 6446 freq_range->start_freq_khz = 6447 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 6448 freq_range->end_freq_khz = 6449 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 6450 freq_range->max_bandwidth_khz = 6451 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 6452 6453 power_rule->max_eirp = 6454 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 6455 6456 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 6457 power_rule->max_antenna_gain = 6458 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 6459 6460 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 6461 reg_rule->dfs_cac_ms = 6462 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 6463 6464 return 0; 6465 } 6466 6467 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 6468 { 6469 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 6470 struct nlattr *nl_reg_rule; 6471 char *alpha2; 6472 int rem_reg_rules, r; 6473 u32 num_rules = 0, rule_idx = 0, size_of_regd; 6474 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 6475 struct ieee80211_regdomain *rd; 6476 6477 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 6478 return -EINVAL; 6479 6480 if (!info->attrs[NL80211_ATTR_REG_RULES]) 6481 return -EINVAL; 6482 6483 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 6484 6485 if (info->attrs[NL80211_ATTR_DFS_REGION]) 6486 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 6487 6488 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 6489 rem_reg_rules) { 6490 num_rules++; 6491 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 6492 return -EINVAL; 6493 } 6494 6495 if (!reg_is_valid_request(alpha2)) 6496 return -EINVAL; 6497 6498 size_of_regd = sizeof(struct ieee80211_regdomain) + 6499 num_rules * sizeof(struct ieee80211_reg_rule); 6500 6501 rd = kzalloc(size_of_regd, GFP_KERNEL); 6502 if (!rd) 6503 return -ENOMEM; 6504 6505 rd->n_reg_rules = num_rules; 6506 rd->alpha2[0] = alpha2[0]; 6507 rd->alpha2[1] = alpha2[1]; 6508 6509 /* 6510 * Disable DFS master mode if the DFS region was 6511 * not supported or known on this kernel. 6512 */ 6513 if (reg_supported_dfs_region(dfs_region)) 6514 rd->dfs_region = dfs_region; 6515 6516 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 6517 rem_reg_rules) { 6518 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX, 6519 nl_reg_rule, reg_rule_policy, 6520 info->extack); 6521 if (r) 6522 goto bad_reg; 6523 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 6524 if (r) 6525 goto bad_reg; 6526 6527 rule_idx++; 6528 6529 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 6530 r = -EINVAL; 6531 goto bad_reg; 6532 } 6533 } 6534 6535 /* set_regdom takes ownership of rd */ 6536 return set_regdom(rd, REGD_SOURCE_CRDA); 6537 bad_reg: 6538 kfree(rd); 6539 return r; 6540 } 6541 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ 6542 6543 static int validate_scan_freqs(struct nlattr *freqs) 6544 { 6545 struct nlattr *attr1, *attr2; 6546 int n_channels = 0, tmp1, tmp2; 6547 6548 nla_for_each_nested(attr1, freqs, tmp1) 6549 if (nla_len(attr1) != sizeof(u32)) 6550 return 0; 6551 6552 nla_for_each_nested(attr1, freqs, tmp1) { 6553 n_channels++; 6554 /* 6555 * Some hardware has a limited channel list for 6556 * scanning, and it is pretty much nonsensical 6557 * to scan for a channel twice, so disallow that 6558 * and don't require drivers to check that the 6559 * channel list they get isn't longer than what 6560 * they can scan, as long as they can scan all 6561 * the channels they registered at once. 6562 */ 6563 nla_for_each_nested(attr2, freqs, tmp2) 6564 if (attr1 != attr2 && 6565 nla_get_u32(attr1) == nla_get_u32(attr2)) 6566 return 0; 6567 } 6568 6569 return n_channels; 6570 } 6571 6572 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b) 6573 { 6574 return b < NUM_NL80211_BANDS && wiphy->bands[b]; 6575 } 6576 6577 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy, 6578 struct cfg80211_bss_selection *bss_select) 6579 { 6580 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1]; 6581 struct nlattr *nest; 6582 int err; 6583 bool found = false; 6584 int i; 6585 6586 /* only process one nested attribute */ 6587 nest = nla_data(nla); 6588 if (!nla_ok(nest, nla_len(nest))) 6589 return -EINVAL; 6590 6591 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest, 6592 nl80211_bss_select_policy, NULL); 6593 if (err) 6594 return err; 6595 6596 /* only one attribute may be given */ 6597 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) { 6598 if (attr[i]) { 6599 if (found) 6600 return -EINVAL; 6601 found = true; 6602 } 6603 } 6604 6605 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID; 6606 6607 if (attr[NL80211_BSS_SELECT_ATTR_RSSI]) 6608 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI; 6609 6610 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) { 6611 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF; 6612 bss_select->param.band_pref = 6613 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]); 6614 if (!is_band_valid(wiphy, bss_select->param.band_pref)) 6615 return -EINVAL; 6616 } 6617 6618 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) { 6619 struct nl80211_bss_select_rssi_adjust *adj_param; 6620 6621 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]); 6622 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST; 6623 bss_select->param.adjust.band = adj_param->band; 6624 bss_select->param.adjust.delta = adj_param->delta; 6625 if (!is_band_valid(wiphy, bss_select->param.adjust.band)) 6626 return -EINVAL; 6627 } 6628 6629 /* user-space did not provide behaviour attribute */ 6630 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID) 6631 return -EINVAL; 6632 6633 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour))) 6634 return -EINVAL; 6635 6636 return 0; 6637 } 6638 6639 static int nl80211_parse_random_mac(struct nlattr **attrs, 6640 u8 *mac_addr, u8 *mac_addr_mask) 6641 { 6642 int i; 6643 6644 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 6645 eth_zero_addr(mac_addr); 6646 eth_zero_addr(mac_addr_mask); 6647 mac_addr[0] = 0x2; 6648 mac_addr_mask[0] = 0x3; 6649 6650 return 0; 6651 } 6652 6653 /* need both or none */ 6654 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 6655 return -EINVAL; 6656 6657 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 6658 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 6659 6660 /* don't allow or configure an mcast address */ 6661 if (!is_multicast_ether_addr(mac_addr_mask) || 6662 is_multicast_ether_addr(mac_addr)) 6663 return -EINVAL; 6664 6665 /* 6666 * allow users to pass a MAC address that has bits set outside 6667 * of the mask, but don't bother drivers with having to deal 6668 * with such bits 6669 */ 6670 for (i = 0; i < ETH_ALEN; i++) 6671 mac_addr[i] &= mac_addr_mask[i]; 6672 6673 return 0; 6674 } 6675 6676 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev) 6677 { 6678 ASSERT_WDEV_LOCK(wdev); 6679 6680 if (!cfg80211_beaconing_iface_active(wdev)) 6681 return true; 6682 6683 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR)) 6684 return true; 6685 6686 return regulatory_pre_cac_allowed(wdev->wiphy); 6687 } 6688 6689 static int 6690 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev, 6691 void *request, struct nlattr **attrs, 6692 bool is_sched_scan) 6693 { 6694 u8 *mac_addr, *mac_addr_mask; 6695 u32 *flags; 6696 enum nl80211_feature_flags randomness_flag; 6697 6698 if (!attrs[NL80211_ATTR_SCAN_FLAGS]) 6699 return 0; 6700 6701 if (is_sched_scan) { 6702 struct cfg80211_sched_scan_request *req = request; 6703 6704 randomness_flag = wdev ? 6705 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR : 6706 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6707 flags = &req->flags; 6708 mac_addr = req->mac_addr; 6709 mac_addr_mask = req->mac_addr_mask; 6710 } else { 6711 struct cfg80211_scan_request *req = request; 6712 6713 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR; 6714 flags = &req->flags; 6715 mac_addr = req->mac_addr; 6716 mac_addr_mask = req->mac_addr_mask; 6717 } 6718 6719 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]); 6720 6721 if ((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6722 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) 6723 return -EOPNOTSUPP; 6724 6725 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6726 int err; 6727 6728 if (!(wiphy->features & randomness_flag) || 6729 (wdev && wdev->current_bss)) 6730 return -EOPNOTSUPP; 6731 6732 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask); 6733 if (err) 6734 return err; 6735 } 6736 6737 if ((*flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME) && 6738 !wiphy_ext_feature_isset(wiphy, 6739 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME)) 6740 return -EOPNOTSUPP; 6741 6742 if ((*flags & NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP) && 6743 !wiphy_ext_feature_isset(wiphy, 6744 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP)) 6745 return -EOPNOTSUPP; 6746 6747 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) && 6748 !wiphy_ext_feature_isset(wiphy, 6749 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION)) 6750 return -EOPNOTSUPP; 6751 6752 if ((*flags & NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE) && 6753 !wiphy_ext_feature_isset(wiphy, 6754 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE)) 6755 return -EOPNOTSUPP; 6756 6757 return 0; 6758 } 6759 6760 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 6761 { 6762 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6763 struct wireless_dev *wdev = info->user_ptr[1]; 6764 struct cfg80211_scan_request *request; 6765 struct nlattr *attr; 6766 struct wiphy *wiphy; 6767 int err, tmp, n_ssids = 0, n_channels, i; 6768 size_t ie_len; 6769 6770 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6771 return -EINVAL; 6772 6773 wiphy = &rdev->wiphy; 6774 6775 if (wdev->iftype == NL80211_IFTYPE_NAN) 6776 return -EOPNOTSUPP; 6777 6778 if (!rdev->ops->scan) 6779 return -EOPNOTSUPP; 6780 6781 if (rdev->scan_req || rdev->scan_msg) { 6782 err = -EBUSY; 6783 goto unlock; 6784 } 6785 6786 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6787 n_channels = validate_scan_freqs( 6788 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 6789 if (!n_channels) { 6790 err = -EINVAL; 6791 goto unlock; 6792 } 6793 } else { 6794 n_channels = ieee80211_get_num_supported_channels(wiphy); 6795 } 6796 6797 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 6798 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 6799 n_ssids++; 6800 6801 if (n_ssids > wiphy->max_scan_ssids) { 6802 err = -EINVAL; 6803 goto unlock; 6804 } 6805 6806 if (info->attrs[NL80211_ATTR_IE]) 6807 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6808 else 6809 ie_len = 0; 6810 6811 if (ie_len > wiphy->max_scan_ie_len) { 6812 err = -EINVAL; 6813 goto unlock; 6814 } 6815 6816 request = kzalloc(sizeof(*request) 6817 + sizeof(*request->ssids) * n_ssids 6818 + sizeof(*request->channels) * n_channels 6819 + ie_len, GFP_KERNEL); 6820 if (!request) { 6821 err = -ENOMEM; 6822 goto unlock; 6823 } 6824 6825 if (n_ssids) 6826 request->ssids = (void *)&request->channels[n_channels]; 6827 request->n_ssids = n_ssids; 6828 if (ie_len) { 6829 if (n_ssids) 6830 request->ie = (void *)(request->ssids + n_ssids); 6831 else 6832 request->ie = (void *)(request->channels + n_channels); 6833 } 6834 6835 i = 0; 6836 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6837 /* user specified, bail out if channel not found */ 6838 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 6839 struct ieee80211_channel *chan; 6840 6841 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6842 6843 if (!chan) { 6844 err = -EINVAL; 6845 goto out_free; 6846 } 6847 6848 /* ignore disabled channels */ 6849 if (chan->flags & IEEE80211_CHAN_DISABLED) 6850 continue; 6851 6852 request->channels[i] = chan; 6853 i++; 6854 } 6855 } else { 6856 enum nl80211_band band; 6857 6858 /* all channels */ 6859 for (band = 0; band < NUM_NL80211_BANDS; band++) { 6860 int j; 6861 6862 if (!wiphy->bands[band]) 6863 continue; 6864 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6865 struct ieee80211_channel *chan; 6866 6867 chan = &wiphy->bands[band]->channels[j]; 6868 6869 if (chan->flags & IEEE80211_CHAN_DISABLED) 6870 continue; 6871 6872 request->channels[i] = chan; 6873 i++; 6874 } 6875 } 6876 } 6877 6878 if (!i) { 6879 err = -EINVAL; 6880 goto out_free; 6881 } 6882 6883 request->n_channels = i; 6884 6885 wdev_lock(wdev); 6886 if (!cfg80211_off_channel_oper_allowed(wdev)) { 6887 struct ieee80211_channel *chan; 6888 6889 if (request->n_channels != 1) { 6890 wdev_unlock(wdev); 6891 err = -EBUSY; 6892 goto out_free; 6893 } 6894 6895 chan = request->channels[0]; 6896 if (chan->center_freq != wdev->chandef.chan->center_freq) { 6897 wdev_unlock(wdev); 6898 err = -EBUSY; 6899 goto out_free; 6900 } 6901 } 6902 wdev_unlock(wdev); 6903 6904 i = 0; 6905 if (n_ssids) { 6906 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 6907 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6908 err = -EINVAL; 6909 goto out_free; 6910 } 6911 request->ssids[i].ssid_len = nla_len(attr); 6912 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 6913 i++; 6914 } 6915 } 6916 6917 if (info->attrs[NL80211_ATTR_IE]) { 6918 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6919 memcpy((void *)request->ie, 6920 nla_data(info->attrs[NL80211_ATTR_IE]), 6921 request->ie_len); 6922 } 6923 6924 for (i = 0; i < NUM_NL80211_BANDS; i++) 6925 if (wiphy->bands[i]) 6926 request->rates[i] = 6927 (1 << wiphy->bands[i]->n_bitrates) - 1; 6928 6929 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 6930 nla_for_each_nested(attr, 6931 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 6932 tmp) { 6933 enum nl80211_band band = nla_type(attr); 6934 6935 if (band < 0 || band >= NUM_NL80211_BANDS) { 6936 err = -EINVAL; 6937 goto out_free; 6938 } 6939 6940 if (!wiphy->bands[band]) 6941 continue; 6942 6943 err = ieee80211_get_ratemask(wiphy->bands[band], 6944 nla_data(attr), 6945 nla_len(attr), 6946 &request->rates[band]); 6947 if (err) 6948 goto out_free; 6949 } 6950 } 6951 6952 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) { 6953 if (!wiphy_ext_feature_isset(wiphy, 6954 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) { 6955 err = -EOPNOTSUPP; 6956 goto out_free; 6957 } 6958 6959 request->duration = 6960 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]); 6961 request->duration_mandatory = 6962 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]); 6963 } 6964 6965 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs, 6966 false); 6967 if (err) 6968 goto out_free; 6969 6970 request->no_cck = 6971 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 6972 6973 /* Initial implementation used NL80211_ATTR_MAC to set the specific 6974 * BSSID to scan for. This was problematic because that same attribute 6975 * was already used for another purpose (local random MAC address). The 6976 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards 6977 * compatibility with older userspace components, also use the 6978 * NL80211_ATTR_MAC value here if it can be determined to be used for 6979 * the specific BSSID use case instead of the random MAC address 6980 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use). 6981 */ 6982 if (info->attrs[NL80211_ATTR_BSSID]) 6983 memcpy(request->bssid, 6984 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN); 6985 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) && 6986 info->attrs[NL80211_ATTR_MAC]) 6987 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]), 6988 ETH_ALEN); 6989 else 6990 eth_broadcast_addr(request->bssid); 6991 6992 request->wdev = wdev; 6993 request->wiphy = &rdev->wiphy; 6994 request->scan_start = jiffies; 6995 6996 rdev->scan_req = request; 6997 err = rdev_scan(rdev, request); 6998 6999 if (!err) { 7000 nl80211_send_scan_start(rdev, wdev); 7001 if (wdev->netdev) 7002 dev_hold(wdev->netdev); 7003 } else { 7004 out_free: 7005 rdev->scan_req = NULL; 7006 kfree(request); 7007 } 7008 7009 unlock: 7010 return err; 7011 } 7012 7013 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info) 7014 { 7015 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7016 struct wireless_dev *wdev = info->user_ptr[1]; 7017 7018 if (!rdev->ops->abort_scan) 7019 return -EOPNOTSUPP; 7020 7021 if (rdev->scan_msg) 7022 return 0; 7023 7024 if (!rdev->scan_req) 7025 return -ENOENT; 7026 7027 rdev_abort_scan(rdev, wdev); 7028 return 0; 7029 } 7030 7031 static int 7032 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans, 7033 struct cfg80211_sched_scan_request *request, 7034 struct nlattr **attrs) 7035 { 7036 int tmp, err, i = 0; 7037 struct nlattr *attr; 7038 7039 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 7040 u32 interval; 7041 7042 /* 7043 * If scan plans are not specified, 7044 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this 7045 * case one scan plan will be set with the specified scan 7046 * interval and infinite number of iterations. 7047 */ 7048 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 7049 if (!interval) 7050 return -EINVAL; 7051 7052 request->scan_plans[0].interval = 7053 DIV_ROUND_UP(interval, MSEC_PER_SEC); 7054 if (!request->scan_plans[0].interval) 7055 return -EINVAL; 7056 7057 if (request->scan_plans[0].interval > 7058 wiphy->max_sched_scan_plan_interval) 7059 request->scan_plans[0].interval = 7060 wiphy->max_sched_scan_plan_interval; 7061 7062 return 0; 7063 } 7064 7065 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) { 7066 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1]; 7067 7068 if (WARN_ON(i >= n_plans)) 7069 return -EINVAL; 7070 7071 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX, 7072 attr, nl80211_plan_policy, NULL); 7073 if (err) 7074 return err; 7075 7076 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]) 7077 return -EINVAL; 7078 7079 request->scan_plans[i].interval = 7080 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]); 7081 if (!request->scan_plans[i].interval || 7082 request->scan_plans[i].interval > 7083 wiphy->max_sched_scan_plan_interval) 7084 return -EINVAL; 7085 7086 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) { 7087 request->scan_plans[i].iterations = 7088 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]); 7089 if (!request->scan_plans[i].iterations || 7090 (request->scan_plans[i].iterations > 7091 wiphy->max_sched_scan_plan_iterations)) 7092 return -EINVAL; 7093 } else if (i < n_plans - 1) { 7094 /* 7095 * All scan plans but the last one must specify 7096 * a finite number of iterations 7097 */ 7098 return -EINVAL; 7099 } 7100 7101 i++; 7102 } 7103 7104 /* 7105 * The last scan plan must not specify the number of 7106 * iterations, it is supposed to run infinitely 7107 */ 7108 if (request->scan_plans[n_plans - 1].iterations) 7109 return -EINVAL; 7110 7111 return 0; 7112 } 7113 7114 static struct cfg80211_sched_scan_request * 7115 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 7116 struct nlattr **attrs, int max_match_sets) 7117 { 7118 struct cfg80211_sched_scan_request *request; 7119 struct nlattr *attr; 7120 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0; 7121 enum nl80211_band band; 7122 size_t ie_len; 7123 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 7124 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 7125 7126 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 7127 return ERR_PTR(-EINVAL); 7128 7129 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7130 n_channels = validate_scan_freqs( 7131 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 7132 if (!n_channels) 7133 return ERR_PTR(-EINVAL); 7134 } else { 7135 n_channels = ieee80211_get_num_supported_channels(wiphy); 7136 } 7137 7138 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 7139 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 7140 tmp) 7141 n_ssids++; 7142 7143 if (n_ssids > wiphy->max_sched_scan_ssids) 7144 return ERR_PTR(-EINVAL); 7145 7146 /* 7147 * First, count the number of 'real' matchsets. Due to an issue with 7148 * the old implementation, matchsets containing only the RSSI attribute 7149 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 7150 * RSSI for all matchsets, rather than their own matchset for reporting 7151 * all APs with a strong RSSI. This is needed to be compatible with 7152 * older userspace that treated a matchset with only the RSSI as the 7153 * global RSSI for all other matchsets - if there are other matchsets. 7154 */ 7155 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 7156 nla_for_each_nested(attr, 7157 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 7158 tmp) { 7159 struct nlattr *rssi; 7160 7161 err = nla_parse_nested(tb, 7162 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 7163 attr, nl80211_match_policy, 7164 NULL); 7165 if (err) 7166 return ERR_PTR(err); 7167 7168 /* SSID and BSSID are mutually exclusive */ 7169 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] && 7170 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) 7171 return ERR_PTR(-EINVAL); 7172 7173 /* add other standalone attributes here */ 7174 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] || 7175 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) { 7176 n_match_sets++; 7177 continue; 7178 } 7179 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 7180 if (rssi) 7181 default_match_rssi = nla_get_s32(rssi); 7182 } 7183 } 7184 7185 /* However, if there's no other matchset, add the RSSI one */ 7186 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 7187 n_match_sets = 1; 7188 7189 if (n_match_sets > max_match_sets) 7190 return ERR_PTR(-EINVAL); 7191 7192 if (attrs[NL80211_ATTR_IE]) 7193 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 7194 else 7195 ie_len = 0; 7196 7197 if (ie_len > wiphy->max_sched_scan_ie_len) 7198 return ERR_PTR(-EINVAL); 7199 7200 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 7201 /* 7202 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since 7203 * each scan plan already specifies its own interval 7204 */ 7205 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 7206 return ERR_PTR(-EINVAL); 7207 7208 nla_for_each_nested(attr, 7209 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) 7210 n_plans++; 7211 } else { 7212 /* 7213 * The scan interval attribute is kept for backward 7214 * compatibility. If no scan plans are specified and sched scan 7215 * interval is specified, one scan plan will be set with this 7216 * scan interval and infinite number of iterations. 7217 */ 7218 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 7219 return ERR_PTR(-EINVAL); 7220 7221 n_plans = 1; 7222 } 7223 7224 if (!n_plans || n_plans > wiphy->max_sched_scan_plans) 7225 return ERR_PTR(-EINVAL); 7226 7227 if (!wiphy_ext_feature_isset( 7228 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) && 7229 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] || 7230 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST])) 7231 return ERR_PTR(-EINVAL); 7232 7233 request = kzalloc(sizeof(*request) 7234 + sizeof(*request->ssids) * n_ssids 7235 + sizeof(*request->match_sets) * n_match_sets 7236 + sizeof(*request->scan_plans) * n_plans 7237 + sizeof(*request->channels) * n_channels 7238 + ie_len, GFP_KERNEL); 7239 if (!request) 7240 return ERR_PTR(-ENOMEM); 7241 7242 if (n_ssids) 7243 request->ssids = (void *)&request->channels[n_channels]; 7244 request->n_ssids = n_ssids; 7245 if (ie_len) { 7246 if (n_ssids) 7247 request->ie = (void *)(request->ssids + n_ssids); 7248 else 7249 request->ie = (void *)(request->channels + n_channels); 7250 } 7251 7252 if (n_match_sets) { 7253 if (request->ie) 7254 request->match_sets = (void *)(request->ie + ie_len); 7255 else if (n_ssids) 7256 request->match_sets = 7257 (void *)(request->ssids + n_ssids); 7258 else 7259 request->match_sets = 7260 (void *)(request->channels + n_channels); 7261 } 7262 request->n_match_sets = n_match_sets; 7263 7264 if (n_match_sets) 7265 request->scan_plans = (void *)(request->match_sets + 7266 n_match_sets); 7267 else if (request->ie) 7268 request->scan_plans = (void *)(request->ie + ie_len); 7269 else if (n_ssids) 7270 request->scan_plans = (void *)(request->ssids + n_ssids); 7271 else 7272 request->scan_plans = (void *)(request->channels + n_channels); 7273 7274 request->n_scan_plans = n_plans; 7275 7276 i = 0; 7277 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7278 /* user specified, bail out if channel not found */ 7279 nla_for_each_nested(attr, 7280 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 7281 tmp) { 7282 struct ieee80211_channel *chan; 7283 7284 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 7285 7286 if (!chan) { 7287 err = -EINVAL; 7288 goto out_free; 7289 } 7290 7291 /* ignore disabled channels */ 7292 if (chan->flags & IEEE80211_CHAN_DISABLED) 7293 continue; 7294 7295 request->channels[i] = chan; 7296 i++; 7297 } 7298 } else { 7299 /* all channels */ 7300 for (band = 0; band < NUM_NL80211_BANDS; band++) { 7301 int j; 7302 7303 if (!wiphy->bands[band]) 7304 continue; 7305 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 7306 struct ieee80211_channel *chan; 7307 7308 chan = &wiphy->bands[band]->channels[j]; 7309 7310 if (chan->flags & IEEE80211_CHAN_DISABLED) 7311 continue; 7312 7313 request->channels[i] = chan; 7314 i++; 7315 } 7316 } 7317 } 7318 7319 if (!i) { 7320 err = -EINVAL; 7321 goto out_free; 7322 } 7323 7324 request->n_channels = i; 7325 7326 i = 0; 7327 if (n_ssids) { 7328 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 7329 tmp) { 7330 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 7331 err = -EINVAL; 7332 goto out_free; 7333 } 7334 request->ssids[i].ssid_len = nla_len(attr); 7335 memcpy(request->ssids[i].ssid, nla_data(attr), 7336 nla_len(attr)); 7337 i++; 7338 } 7339 } 7340 7341 i = 0; 7342 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 7343 nla_for_each_nested(attr, 7344 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 7345 tmp) { 7346 struct nlattr *ssid, *bssid, *rssi; 7347 7348 err = nla_parse_nested(tb, 7349 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 7350 attr, nl80211_match_policy, 7351 NULL); 7352 if (err) 7353 goto out_free; 7354 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 7355 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]; 7356 if (ssid || bssid) { 7357 if (WARN_ON(i >= n_match_sets)) { 7358 /* this indicates a programming error, 7359 * the loop above should have verified 7360 * things properly 7361 */ 7362 err = -EINVAL; 7363 goto out_free; 7364 } 7365 7366 if (ssid) { 7367 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 7368 err = -EINVAL; 7369 goto out_free; 7370 } 7371 memcpy(request->match_sets[i].ssid.ssid, 7372 nla_data(ssid), nla_len(ssid)); 7373 request->match_sets[i].ssid.ssid_len = 7374 nla_len(ssid); 7375 } 7376 if (bssid) { 7377 if (nla_len(bssid) != ETH_ALEN) { 7378 err = -EINVAL; 7379 goto out_free; 7380 } 7381 memcpy(request->match_sets[i].bssid, 7382 nla_data(bssid), ETH_ALEN); 7383 } 7384 7385 /* special attribute - old implementation w/a */ 7386 request->match_sets[i].rssi_thold = 7387 default_match_rssi; 7388 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 7389 if (rssi) 7390 request->match_sets[i].rssi_thold = 7391 nla_get_s32(rssi); 7392 } 7393 i++; 7394 } 7395 7396 /* there was no other matchset, so the RSSI one is alone */ 7397 if (i == 0 && n_match_sets) 7398 request->match_sets[0].rssi_thold = default_match_rssi; 7399 7400 request->min_rssi_thold = INT_MAX; 7401 for (i = 0; i < n_match_sets; i++) 7402 request->min_rssi_thold = 7403 min(request->match_sets[i].rssi_thold, 7404 request->min_rssi_thold); 7405 } else { 7406 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 7407 } 7408 7409 if (ie_len) { 7410 request->ie_len = ie_len; 7411 memcpy((void *)request->ie, 7412 nla_data(attrs[NL80211_ATTR_IE]), 7413 request->ie_len); 7414 } 7415 7416 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true); 7417 if (err) 7418 goto out_free; 7419 7420 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 7421 request->delay = 7422 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 7423 7424 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) { 7425 request->relative_rssi = nla_get_s8( 7426 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]); 7427 request->relative_rssi_set = true; 7428 } 7429 7430 if (request->relative_rssi_set && 7431 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) { 7432 struct nl80211_bss_select_rssi_adjust *rssi_adjust; 7433 7434 rssi_adjust = nla_data( 7435 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]); 7436 request->rssi_adjust.band = rssi_adjust->band; 7437 request->rssi_adjust.delta = rssi_adjust->delta; 7438 if (!is_band_valid(wiphy, request->rssi_adjust.band)) { 7439 err = -EINVAL; 7440 goto out_free; 7441 } 7442 } 7443 7444 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs); 7445 if (err) 7446 goto out_free; 7447 7448 request->scan_start = jiffies; 7449 7450 return request; 7451 7452 out_free: 7453 kfree(request); 7454 return ERR_PTR(err); 7455 } 7456 7457 static int nl80211_start_sched_scan(struct sk_buff *skb, 7458 struct genl_info *info) 7459 { 7460 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7461 struct net_device *dev = info->user_ptr[1]; 7462 struct wireless_dev *wdev = dev->ieee80211_ptr; 7463 struct cfg80211_sched_scan_request *sched_scan_req; 7464 bool want_multi; 7465 int err; 7466 7467 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start) 7468 return -EOPNOTSUPP; 7469 7470 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI]; 7471 err = cfg80211_sched_scan_req_possible(rdev, want_multi); 7472 if (err) 7473 return err; 7474 7475 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 7476 info->attrs, 7477 rdev->wiphy.max_match_sets); 7478 7479 err = PTR_ERR_OR_ZERO(sched_scan_req); 7480 if (err) 7481 goto out_err; 7482 7483 /* leave request id zero for legacy request 7484 * or if driver does not support multi-scheduled scan 7485 */ 7486 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) { 7487 while (!sched_scan_req->reqid) 7488 sched_scan_req->reqid = rdev->wiphy.cookie_counter++; 7489 } 7490 7491 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 7492 if (err) 7493 goto out_free; 7494 7495 sched_scan_req->dev = dev; 7496 sched_scan_req->wiphy = &rdev->wiphy; 7497 7498 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 7499 sched_scan_req->owner_nlportid = info->snd_portid; 7500 7501 cfg80211_add_sched_scan_req(rdev, sched_scan_req); 7502 7503 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN); 7504 return 0; 7505 7506 out_free: 7507 kfree(sched_scan_req); 7508 out_err: 7509 return err; 7510 } 7511 7512 static int nl80211_stop_sched_scan(struct sk_buff *skb, 7513 struct genl_info *info) 7514 { 7515 struct cfg80211_sched_scan_request *req; 7516 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7517 u64 cookie; 7518 7519 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop) 7520 return -EOPNOTSUPP; 7521 7522 if (info->attrs[NL80211_ATTR_COOKIE]) { 7523 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7524 return __cfg80211_stop_sched_scan(rdev, cookie, false); 7525 } 7526 7527 req = list_first_or_null_rcu(&rdev->sched_scan_req_list, 7528 struct cfg80211_sched_scan_request, 7529 list); 7530 if (!req || req->reqid || 7531 (req->owner_nlportid && 7532 req->owner_nlportid != info->snd_portid)) 7533 return -ENOENT; 7534 7535 return cfg80211_stop_sched_scan_req(rdev, req, false); 7536 } 7537 7538 static int nl80211_start_radar_detection(struct sk_buff *skb, 7539 struct genl_info *info) 7540 { 7541 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7542 struct net_device *dev = info->user_ptr[1]; 7543 struct wireless_dev *wdev = dev->ieee80211_ptr; 7544 struct cfg80211_chan_def chandef; 7545 enum nl80211_dfs_regions dfs_region; 7546 unsigned int cac_time_ms; 7547 int err; 7548 7549 dfs_region = reg_get_dfs_region(wdev->wiphy); 7550 if (dfs_region == NL80211_DFS_UNSET) 7551 return -EINVAL; 7552 7553 err = nl80211_parse_chandef(rdev, info, &chandef); 7554 if (err) 7555 return err; 7556 7557 if (netif_carrier_ok(dev)) 7558 return -EBUSY; 7559 7560 if (wdev->cac_started) 7561 return -EBUSY; 7562 7563 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, 7564 wdev->iftype); 7565 if (err < 0) 7566 return err; 7567 7568 if (err == 0) 7569 return -EINVAL; 7570 7571 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 7572 return -EINVAL; 7573 7574 if (!rdev->ops->start_radar_detection) 7575 return -EOPNOTSUPP; 7576 7577 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 7578 if (WARN_ON(!cac_time_ms)) 7579 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 7580 7581 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms); 7582 if (!err) { 7583 wdev->chandef = chandef; 7584 wdev->cac_started = true; 7585 wdev->cac_start_time = jiffies; 7586 wdev->cac_time_ms = cac_time_ms; 7587 } 7588 return err; 7589 } 7590 7591 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 7592 { 7593 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7594 struct net_device *dev = info->user_ptr[1]; 7595 struct wireless_dev *wdev = dev->ieee80211_ptr; 7596 struct cfg80211_csa_settings params; 7597 /* csa_attrs is defined static to avoid waste of stack size - this 7598 * function is called under RTNL lock, so this should not be a problem. 7599 */ 7600 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 7601 int err; 7602 bool need_new_beacon = false; 7603 bool need_handle_dfs_flag = true; 7604 int len, i; 7605 u32 cs_count; 7606 7607 if (!rdev->ops->channel_switch || 7608 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 7609 return -EOPNOTSUPP; 7610 7611 switch (dev->ieee80211_ptr->iftype) { 7612 case NL80211_IFTYPE_AP: 7613 case NL80211_IFTYPE_P2P_GO: 7614 need_new_beacon = true; 7615 /* For all modes except AP the handle_dfs flag needs to be 7616 * supplied to tell the kernel that userspace will handle radar 7617 * events when they happen. Otherwise a switch to a channel 7618 * requiring DFS will be rejected. 7619 */ 7620 need_handle_dfs_flag = false; 7621 7622 /* useless if AP is not running */ 7623 if (!wdev->beacon_interval) 7624 return -ENOTCONN; 7625 break; 7626 case NL80211_IFTYPE_ADHOC: 7627 if (!wdev->ssid_len) 7628 return -ENOTCONN; 7629 break; 7630 case NL80211_IFTYPE_MESH_POINT: 7631 if (!wdev->mesh_id_len) 7632 return -ENOTCONN; 7633 break; 7634 default: 7635 return -EOPNOTSUPP; 7636 } 7637 7638 memset(¶ms, 0, sizeof(params)); 7639 7640 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7641 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 7642 return -EINVAL; 7643 7644 /* only important for AP, IBSS and mesh create IEs internally */ 7645 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 7646 return -EINVAL; 7647 7648 /* Even though the attribute is u32, the specification says 7649 * u8, so let's make sure we don't overflow. 7650 */ 7651 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 7652 if (cs_count > 255) 7653 return -EINVAL; 7654 7655 params.count = cs_count; 7656 7657 if (!need_new_beacon) 7658 goto skip_beacons; 7659 7660 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 7661 if (err) 7662 return err; 7663 7664 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 7665 info->attrs[NL80211_ATTR_CSA_IES], 7666 nl80211_policy, info->extack); 7667 if (err) 7668 return err; 7669 7670 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 7671 if (err) 7672 return err; 7673 7674 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 7675 return -EINVAL; 7676 7677 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 7678 if (!len || (len % sizeof(u16))) 7679 return -EINVAL; 7680 7681 params.n_counter_offsets_beacon = len / sizeof(u16); 7682 if (rdev->wiphy.max_num_csa_counters && 7683 (params.n_counter_offsets_beacon > 7684 rdev->wiphy.max_num_csa_counters)) 7685 return -EINVAL; 7686 7687 params.counter_offsets_beacon = 7688 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 7689 7690 /* sanity checks - counters should fit and be the same */ 7691 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 7692 u16 offset = params.counter_offsets_beacon[i]; 7693 7694 if (offset >= params.beacon_csa.tail_len) 7695 return -EINVAL; 7696 7697 if (params.beacon_csa.tail[offset] != params.count) 7698 return -EINVAL; 7699 } 7700 7701 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 7702 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 7703 if (!len || (len % sizeof(u16))) 7704 return -EINVAL; 7705 7706 params.n_counter_offsets_presp = len / sizeof(u16); 7707 if (rdev->wiphy.max_num_csa_counters && 7708 (params.n_counter_offsets_presp > 7709 rdev->wiphy.max_num_csa_counters)) 7710 return -EINVAL; 7711 7712 params.counter_offsets_presp = 7713 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 7714 7715 /* sanity checks - counters should fit and be the same */ 7716 for (i = 0; i < params.n_counter_offsets_presp; i++) { 7717 u16 offset = params.counter_offsets_presp[i]; 7718 7719 if (offset >= params.beacon_csa.probe_resp_len) 7720 return -EINVAL; 7721 7722 if (params.beacon_csa.probe_resp[offset] != 7723 params.count) 7724 return -EINVAL; 7725 } 7726 } 7727 7728 skip_beacons: 7729 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 7730 if (err) 7731 return err; 7732 7733 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 7734 wdev->iftype)) 7735 return -EINVAL; 7736 7737 err = cfg80211_chandef_dfs_required(wdev->wiphy, 7738 ¶ms.chandef, 7739 wdev->iftype); 7740 if (err < 0) 7741 return err; 7742 7743 if (err > 0) { 7744 params.radar_required = true; 7745 if (need_handle_dfs_flag && 7746 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) { 7747 return -EINVAL; 7748 } 7749 } 7750 7751 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 7752 params.block_tx = true; 7753 7754 wdev_lock(wdev); 7755 err = rdev_channel_switch(rdev, dev, ¶ms); 7756 wdev_unlock(wdev); 7757 7758 return err; 7759 } 7760 7761 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 7762 u32 seq, int flags, 7763 struct cfg80211_registered_device *rdev, 7764 struct wireless_dev *wdev, 7765 struct cfg80211_internal_bss *intbss) 7766 { 7767 struct cfg80211_bss *res = &intbss->pub; 7768 const struct cfg80211_bss_ies *ies; 7769 void *hdr; 7770 struct nlattr *bss; 7771 7772 ASSERT_WDEV_LOCK(wdev); 7773 7774 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 7775 NL80211_CMD_NEW_SCAN_RESULTS); 7776 if (!hdr) 7777 return -1; 7778 7779 genl_dump_check_consistent(cb, hdr); 7780 7781 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 7782 goto nla_put_failure; 7783 if (wdev->netdev && 7784 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 7785 goto nla_put_failure; 7786 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 7787 NL80211_ATTR_PAD)) 7788 goto nla_put_failure; 7789 7790 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 7791 if (!bss) 7792 goto nla_put_failure; 7793 if ((!is_zero_ether_addr(res->bssid) && 7794 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 7795 goto nla_put_failure; 7796 7797 rcu_read_lock(); 7798 /* indicate whether we have probe response data or not */ 7799 if (rcu_access_pointer(res->proberesp_ies) && 7800 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 7801 goto fail_unlock_rcu; 7802 7803 /* this pointer prefers to be pointed to probe response data 7804 * but is always valid 7805 */ 7806 ies = rcu_dereference(res->ies); 7807 if (ies) { 7808 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf, 7809 NL80211_BSS_PAD)) 7810 goto fail_unlock_rcu; 7811 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 7812 ies->len, ies->data)) 7813 goto fail_unlock_rcu; 7814 } 7815 7816 /* and this pointer is always (unless driver didn't know) beacon data */ 7817 ies = rcu_dereference(res->beacon_ies); 7818 if (ies && ies->from_beacon) { 7819 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf, 7820 NL80211_BSS_PAD)) 7821 goto fail_unlock_rcu; 7822 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 7823 ies->len, ies->data)) 7824 goto fail_unlock_rcu; 7825 } 7826 rcu_read_unlock(); 7827 7828 if (res->beacon_interval && 7829 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 7830 goto nla_put_failure; 7831 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 7832 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 7833 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 7834 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 7835 jiffies_to_msecs(jiffies - intbss->ts))) 7836 goto nla_put_failure; 7837 7838 if (intbss->parent_tsf && 7839 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF, 7840 intbss->parent_tsf, NL80211_BSS_PAD) || 7841 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN, 7842 intbss->parent_bssid))) 7843 goto nla_put_failure; 7844 7845 if (intbss->ts_boottime && 7846 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME, 7847 intbss->ts_boottime, NL80211_BSS_PAD)) 7848 goto nla_put_failure; 7849 7850 if (!nl80211_put_signal(msg, intbss->pub.chains, 7851 intbss->pub.chain_signal, 7852 NL80211_BSS_CHAIN_SIGNAL)) 7853 goto nla_put_failure; 7854 7855 switch (rdev->wiphy.signal_type) { 7856 case CFG80211_SIGNAL_TYPE_MBM: 7857 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 7858 goto nla_put_failure; 7859 break; 7860 case CFG80211_SIGNAL_TYPE_UNSPEC: 7861 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 7862 goto nla_put_failure; 7863 break; 7864 default: 7865 break; 7866 } 7867 7868 switch (wdev->iftype) { 7869 case NL80211_IFTYPE_P2P_CLIENT: 7870 case NL80211_IFTYPE_STATION: 7871 if (intbss == wdev->current_bss && 7872 nla_put_u32(msg, NL80211_BSS_STATUS, 7873 NL80211_BSS_STATUS_ASSOCIATED)) 7874 goto nla_put_failure; 7875 break; 7876 case NL80211_IFTYPE_ADHOC: 7877 if (intbss == wdev->current_bss && 7878 nla_put_u32(msg, NL80211_BSS_STATUS, 7879 NL80211_BSS_STATUS_IBSS_JOINED)) 7880 goto nla_put_failure; 7881 break; 7882 default: 7883 break; 7884 } 7885 7886 nla_nest_end(msg, bss); 7887 7888 genlmsg_end(msg, hdr); 7889 return 0; 7890 7891 fail_unlock_rcu: 7892 rcu_read_unlock(); 7893 nla_put_failure: 7894 genlmsg_cancel(msg, hdr); 7895 return -EMSGSIZE; 7896 } 7897 7898 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 7899 { 7900 struct cfg80211_registered_device *rdev; 7901 struct cfg80211_internal_bss *scan; 7902 struct wireless_dev *wdev; 7903 int start = cb->args[2], idx = 0; 7904 int err; 7905 7906 rtnl_lock(); 7907 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 7908 if (err) { 7909 rtnl_unlock(); 7910 return err; 7911 } 7912 7913 wdev_lock(wdev); 7914 spin_lock_bh(&rdev->bss_lock); 7915 cfg80211_bss_expire(rdev); 7916 7917 cb->seq = rdev->bss_generation; 7918 7919 list_for_each_entry(scan, &rdev->bss_list, list) { 7920 if (++idx <= start) 7921 continue; 7922 if (nl80211_send_bss(skb, cb, 7923 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7924 rdev, wdev, scan) < 0) { 7925 idx--; 7926 break; 7927 } 7928 } 7929 7930 spin_unlock_bh(&rdev->bss_lock); 7931 wdev_unlock(wdev); 7932 7933 cb->args[2] = idx; 7934 rtnl_unlock(); 7935 7936 return skb->len; 7937 } 7938 7939 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 7940 int flags, struct net_device *dev, 7941 bool allow_radio_stats, 7942 struct survey_info *survey) 7943 { 7944 void *hdr; 7945 struct nlattr *infoattr; 7946 7947 /* skip radio stats if userspace didn't request them */ 7948 if (!survey->channel && !allow_radio_stats) 7949 return 0; 7950 7951 hdr = nl80211hdr_put(msg, portid, seq, flags, 7952 NL80211_CMD_NEW_SURVEY_RESULTS); 7953 if (!hdr) 7954 return -ENOMEM; 7955 7956 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 7957 goto nla_put_failure; 7958 7959 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 7960 if (!infoattr) 7961 goto nla_put_failure; 7962 7963 if (survey->channel && 7964 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 7965 survey->channel->center_freq)) 7966 goto nla_put_failure; 7967 7968 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 7969 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 7970 goto nla_put_failure; 7971 if ((survey->filled & SURVEY_INFO_IN_USE) && 7972 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 7973 goto nla_put_failure; 7974 if ((survey->filled & SURVEY_INFO_TIME) && 7975 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME, 7976 survey->time, NL80211_SURVEY_INFO_PAD)) 7977 goto nla_put_failure; 7978 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 7979 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY, 7980 survey->time_busy, NL80211_SURVEY_INFO_PAD)) 7981 goto nla_put_failure; 7982 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 7983 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 7984 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD)) 7985 goto nla_put_failure; 7986 if ((survey->filled & SURVEY_INFO_TIME_RX) && 7987 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX, 7988 survey->time_rx, NL80211_SURVEY_INFO_PAD)) 7989 goto nla_put_failure; 7990 if ((survey->filled & SURVEY_INFO_TIME_TX) && 7991 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX, 7992 survey->time_tx, NL80211_SURVEY_INFO_PAD)) 7993 goto nla_put_failure; 7994 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 7995 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN, 7996 survey->time_scan, NL80211_SURVEY_INFO_PAD)) 7997 goto nla_put_failure; 7998 7999 nla_nest_end(msg, infoattr); 8000 8001 genlmsg_end(msg, hdr); 8002 return 0; 8003 8004 nla_put_failure: 8005 genlmsg_cancel(msg, hdr); 8006 return -EMSGSIZE; 8007 } 8008 8009 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 8010 { 8011 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 8012 struct survey_info survey; 8013 struct cfg80211_registered_device *rdev; 8014 struct wireless_dev *wdev; 8015 int survey_idx = cb->args[2]; 8016 int res; 8017 bool radio_stats; 8018 8019 rtnl_lock(); 8020 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 8021 if (res) 8022 goto out_err; 8023 8024 /* prepare_wdev_dump parsed the attributes */ 8025 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 8026 8027 if (!wdev->netdev) { 8028 res = -EINVAL; 8029 goto out_err; 8030 } 8031 8032 if (!rdev->ops->dump_survey) { 8033 res = -EOPNOTSUPP; 8034 goto out_err; 8035 } 8036 8037 while (1) { 8038 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 8039 if (res == -ENOENT) 8040 break; 8041 if (res) 8042 goto out_err; 8043 8044 /* don't send disabled channels, but do send non-channel data */ 8045 if (survey.channel && 8046 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 8047 survey_idx++; 8048 continue; 8049 } 8050 8051 if (nl80211_send_survey(skb, 8052 NETLINK_CB(cb->skb).portid, 8053 cb->nlh->nlmsg_seq, NLM_F_MULTI, 8054 wdev->netdev, radio_stats, &survey) < 0) 8055 goto out; 8056 survey_idx++; 8057 } 8058 8059 out: 8060 cb->args[2] = survey_idx; 8061 res = skb->len; 8062 out_err: 8063 rtnl_unlock(); 8064 return res; 8065 } 8066 8067 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 8068 { 8069 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 8070 NL80211_WPA_VERSION_2)); 8071 } 8072 8073 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 8074 { 8075 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8076 struct net_device *dev = info->user_ptr[1]; 8077 struct ieee80211_channel *chan; 8078 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL; 8079 int err, ssid_len, ie_len = 0, auth_data_len = 0; 8080 enum nl80211_auth_type auth_type; 8081 struct key_parse key; 8082 bool local_state_change; 8083 8084 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8085 return -EINVAL; 8086 8087 if (!info->attrs[NL80211_ATTR_MAC]) 8088 return -EINVAL; 8089 8090 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 8091 return -EINVAL; 8092 8093 if (!info->attrs[NL80211_ATTR_SSID]) 8094 return -EINVAL; 8095 8096 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8097 return -EINVAL; 8098 8099 err = nl80211_parse_key(info, &key); 8100 if (err) 8101 return err; 8102 8103 if (key.idx >= 0) { 8104 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 8105 return -EINVAL; 8106 if (!key.p.key || !key.p.key_len) 8107 return -EINVAL; 8108 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 8109 key.p.key_len != WLAN_KEY_LEN_WEP40) && 8110 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 8111 key.p.key_len != WLAN_KEY_LEN_WEP104)) 8112 return -EINVAL; 8113 if (key.idx > 3) 8114 return -EINVAL; 8115 } else { 8116 key.p.key_len = 0; 8117 key.p.key = NULL; 8118 } 8119 8120 if (key.idx >= 0) { 8121 int i; 8122 bool ok = false; 8123 8124 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 8125 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 8126 ok = true; 8127 break; 8128 } 8129 } 8130 if (!ok) 8131 return -EINVAL; 8132 } 8133 8134 if (!rdev->ops->auth) 8135 return -EOPNOTSUPP; 8136 8137 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8138 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8139 return -EOPNOTSUPP; 8140 8141 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8142 chan = nl80211_get_valid_chan(&rdev->wiphy, 8143 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8144 if (!chan) 8145 return -EINVAL; 8146 8147 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8148 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8149 8150 if (info->attrs[NL80211_ATTR_IE]) { 8151 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8152 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8153 } 8154 8155 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 8156 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 8157 return -EINVAL; 8158 8159 if ((auth_type == NL80211_AUTHTYPE_SAE || 8160 auth_type == NL80211_AUTHTYPE_FILS_SK || 8161 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 8162 auth_type == NL80211_AUTHTYPE_FILS_PK) && 8163 !info->attrs[NL80211_ATTR_AUTH_DATA]) 8164 return -EINVAL; 8165 8166 if (info->attrs[NL80211_ATTR_AUTH_DATA]) { 8167 if (auth_type != NL80211_AUTHTYPE_SAE && 8168 auth_type != NL80211_AUTHTYPE_FILS_SK && 8169 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS && 8170 auth_type != NL80211_AUTHTYPE_FILS_PK) 8171 return -EINVAL; 8172 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]); 8173 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]); 8174 /* need to include at least Auth Transaction and Status Code */ 8175 if (auth_data_len < 4) 8176 return -EINVAL; 8177 } 8178 8179 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8180 8181 /* 8182 * Since we no longer track auth state, ignore 8183 * requests to only change local state. 8184 */ 8185 if (local_state_change) 8186 return 0; 8187 8188 wdev_lock(dev->ieee80211_ptr); 8189 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 8190 ssid, ssid_len, ie, ie_len, 8191 key.p.key, key.p.key_len, key.idx, 8192 auth_data, auth_data_len); 8193 wdev_unlock(dev->ieee80211_ptr); 8194 return err; 8195 } 8196 8197 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 8198 struct genl_info *info, 8199 struct cfg80211_crypto_settings *settings, 8200 int cipher_limit) 8201 { 8202 memset(settings, 0, sizeof(*settings)); 8203 8204 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 8205 8206 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 8207 u16 proto; 8208 8209 proto = nla_get_u16( 8210 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 8211 settings->control_port_ethertype = cpu_to_be16(proto); 8212 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 8213 proto != ETH_P_PAE) 8214 return -EINVAL; 8215 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 8216 settings->control_port_no_encrypt = true; 8217 } else 8218 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 8219 8220 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 8221 void *data; 8222 int len, i; 8223 8224 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 8225 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 8226 settings->n_ciphers_pairwise = len / sizeof(u32); 8227 8228 if (len % sizeof(u32)) 8229 return -EINVAL; 8230 8231 if (settings->n_ciphers_pairwise > cipher_limit) 8232 return -EINVAL; 8233 8234 memcpy(settings->ciphers_pairwise, data, len); 8235 8236 for (i = 0; i < settings->n_ciphers_pairwise; i++) 8237 if (!cfg80211_supported_cipher_suite( 8238 &rdev->wiphy, 8239 settings->ciphers_pairwise[i])) 8240 return -EINVAL; 8241 } 8242 8243 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 8244 settings->cipher_group = 8245 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 8246 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 8247 settings->cipher_group)) 8248 return -EINVAL; 8249 } 8250 8251 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 8252 settings->wpa_versions = 8253 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 8254 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 8255 return -EINVAL; 8256 } 8257 8258 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 8259 void *data; 8260 int len; 8261 8262 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 8263 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 8264 settings->n_akm_suites = len / sizeof(u32); 8265 8266 if (len % sizeof(u32)) 8267 return -EINVAL; 8268 8269 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 8270 return -EINVAL; 8271 8272 memcpy(settings->akm_suites, data, len); 8273 } 8274 8275 if (info->attrs[NL80211_ATTR_PMK]) { 8276 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN) 8277 return -EINVAL; 8278 if (!wiphy_ext_feature_isset(&rdev->wiphy, 8279 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK)) 8280 return -EINVAL; 8281 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]); 8282 } 8283 8284 return 0; 8285 } 8286 8287 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 8288 { 8289 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8290 struct net_device *dev = info->user_ptr[1]; 8291 struct ieee80211_channel *chan; 8292 struct cfg80211_assoc_request req = {}; 8293 const u8 *bssid, *ssid; 8294 int err, ssid_len = 0; 8295 8296 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8297 return -EINVAL; 8298 8299 if (!info->attrs[NL80211_ATTR_MAC] || 8300 !info->attrs[NL80211_ATTR_SSID] || 8301 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8302 return -EINVAL; 8303 8304 if (!rdev->ops->assoc) 8305 return -EOPNOTSUPP; 8306 8307 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8308 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8309 return -EOPNOTSUPP; 8310 8311 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8312 8313 chan = nl80211_get_valid_chan(&rdev->wiphy, 8314 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8315 if (!chan) 8316 return -EINVAL; 8317 8318 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8319 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8320 8321 if (info->attrs[NL80211_ATTR_IE]) { 8322 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8323 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8324 } 8325 8326 if (info->attrs[NL80211_ATTR_USE_MFP]) { 8327 enum nl80211_mfp mfp = 8328 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 8329 if (mfp == NL80211_MFP_REQUIRED) 8330 req.use_mfp = true; 8331 else if (mfp != NL80211_MFP_NO) 8332 return -EINVAL; 8333 } 8334 8335 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 8336 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 8337 8338 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 8339 req.flags |= ASSOC_REQ_DISABLE_HT; 8340 8341 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8342 memcpy(&req.ht_capa_mask, 8343 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8344 sizeof(req.ht_capa_mask)); 8345 8346 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8347 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8348 return -EINVAL; 8349 memcpy(&req.ht_capa, 8350 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8351 sizeof(req.ht_capa)); 8352 } 8353 8354 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 8355 req.flags |= ASSOC_REQ_DISABLE_VHT; 8356 8357 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8358 memcpy(&req.vht_capa_mask, 8359 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 8360 sizeof(req.vht_capa_mask)); 8361 8362 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 8363 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8364 return -EINVAL; 8365 memcpy(&req.vht_capa, 8366 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 8367 sizeof(req.vht_capa)); 8368 } 8369 8370 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 8371 if (!((rdev->wiphy.features & 8372 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 8373 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 8374 !wiphy_ext_feature_isset(&rdev->wiphy, 8375 NL80211_EXT_FEATURE_RRM)) 8376 return -EINVAL; 8377 req.flags |= ASSOC_REQ_USE_RRM; 8378 } 8379 8380 if (info->attrs[NL80211_ATTR_FILS_KEK]) { 8381 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]); 8382 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]); 8383 if (!info->attrs[NL80211_ATTR_FILS_NONCES]) 8384 return -EINVAL; 8385 req.fils_nonces = 8386 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]); 8387 } 8388 8389 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 8390 if (!err) { 8391 wdev_lock(dev->ieee80211_ptr); 8392 8393 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 8394 ssid, ssid_len, &req); 8395 8396 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 8397 dev->ieee80211_ptr->conn_owner_nlportid = 8398 info->snd_portid; 8399 memcpy(dev->ieee80211_ptr->disconnect_bssid, 8400 bssid, ETH_ALEN); 8401 } 8402 8403 wdev_unlock(dev->ieee80211_ptr); 8404 } 8405 8406 return err; 8407 } 8408 8409 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 8410 { 8411 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8412 struct net_device *dev = info->user_ptr[1]; 8413 const u8 *ie = NULL, *bssid; 8414 int ie_len = 0, err; 8415 u16 reason_code; 8416 bool local_state_change; 8417 8418 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8419 return -EINVAL; 8420 8421 if (!info->attrs[NL80211_ATTR_MAC]) 8422 return -EINVAL; 8423 8424 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8425 return -EINVAL; 8426 8427 if (!rdev->ops->deauth) 8428 return -EOPNOTSUPP; 8429 8430 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8431 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8432 return -EOPNOTSUPP; 8433 8434 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8435 8436 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8437 if (reason_code == 0) { 8438 /* Reason Code 0 is reserved */ 8439 return -EINVAL; 8440 } 8441 8442 if (info->attrs[NL80211_ATTR_IE]) { 8443 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8444 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8445 } 8446 8447 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8448 8449 wdev_lock(dev->ieee80211_ptr); 8450 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 8451 local_state_change); 8452 wdev_unlock(dev->ieee80211_ptr); 8453 return err; 8454 } 8455 8456 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 8457 { 8458 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8459 struct net_device *dev = info->user_ptr[1]; 8460 const u8 *ie = NULL, *bssid; 8461 int ie_len = 0, err; 8462 u16 reason_code; 8463 bool local_state_change; 8464 8465 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8466 return -EINVAL; 8467 8468 if (!info->attrs[NL80211_ATTR_MAC]) 8469 return -EINVAL; 8470 8471 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8472 return -EINVAL; 8473 8474 if (!rdev->ops->disassoc) 8475 return -EOPNOTSUPP; 8476 8477 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8478 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8479 return -EOPNOTSUPP; 8480 8481 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8482 8483 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8484 if (reason_code == 0) { 8485 /* Reason Code 0 is reserved */ 8486 return -EINVAL; 8487 } 8488 8489 if (info->attrs[NL80211_ATTR_IE]) { 8490 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8491 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8492 } 8493 8494 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8495 8496 wdev_lock(dev->ieee80211_ptr); 8497 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 8498 local_state_change); 8499 wdev_unlock(dev->ieee80211_ptr); 8500 return err; 8501 } 8502 8503 static bool 8504 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 8505 int mcast_rate[NUM_NL80211_BANDS], 8506 int rateval) 8507 { 8508 struct wiphy *wiphy = &rdev->wiphy; 8509 bool found = false; 8510 int band, i; 8511 8512 for (band = 0; band < NUM_NL80211_BANDS; band++) { 8513 struct ieee80211_supported_band *sband; 8514 8515 sband = wiphy->bands[band]; 8516 if (!sband) 8517 continue; 8518 8519 for (i = 0; i < sband->n_bitrates; i++) { 8520 if (sband->bitrates[i].bitrate == rateval) { 8521 mcast_rate[band] = i + 1; 8522 found = true; 8523 break; 8524 } 8525 } 8526 } 8527 8528 return found; 8529 } 8530 8531 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 8532 { 8533 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8534 struct net_device *dev = info->user_ptr[1]; 8535 struct cfg80211_ibss_params ibss; 8536 struct wiphy *wiphy; 8537 struct cfg80211_cached_keys *connkeys = NULL; 8538 int err; 8539 8540 memset(&ibss, 0, sizeof(ibss)); 8541 8542 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8543 return -EINVAL; 8544 8545 if (!info->attrs[NL80211_ATTR_SSID] || 8546 !nla_len(info->attrs[NL80211_ATTR_SSID])) 8547 return -EINVAL; 8548 8549 ibss.beacon_interval = 100; 8550 8551 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) 8552 ibss.beacon_interval = 8553 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 8554 8555 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC, 8556 ibss.beacon_interval); 8557 if (err) 8558 return err; 8559 8560 if (!rdev->ops->join_ibss) 8561 return -EOPNOTSUPP; 8562 8563 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 8564 return -EOPNOTSUPP; 8565 8566 wiphy = &rdev->wiphy; 8567 8568 if (info->attrs[NL80211_ATTR_MAC]) { 8569 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8570 8571 if (!is_valid_ether_addr(ibss.bssid)) 8572 return -EINVAL; 8573 } 8574 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8575 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8576 8577 if (info->attrs[NL80211_ATTR_IE]) { 8578 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8579 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8580 } 8581 8582 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 8583 if (err) 8584 return err; 8585 8586 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 8587 NL80211_IFTYPE_ADHOC)) 8588 return -EINVAL; 8589 8590 switch (ibss.chandef.width) { 8591 case NL80211_CHAN_WIDTH_5: 8592 case NL80211_CHAN_WIDTH_10: 8593 case NL80211_CHAN_WIDTH_20_NOHT: 8594 break; 8595 case NL80211_CHAN_WIDTH_20: 8596 case NL80211_CHAN_WIDTH_40: 8597 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 8598 return -EINVAL; 8599 break; 8600 case NL80211_CHAN_WIDTH_80: 8601 case NL80211_CHAN_WIDTH_80P80: 8602 case NL80211_CHAN_WIDTH_160: 8603 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 8604 return -EINVAL; 8605 if (!wiphy_ext_feature_isset(&rdev->wiphy, 8606 NL80211_EXT_FEATURE_VHT_IBSS)) 8607 return -EINVAL; 8608 break; 8609 default: 8610 return -EINVAL; 8611 } 8612 8613 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 8614 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 8615 8616 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 8617 u8 *rates = 8618 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8619 int n_rates = 8620 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8621 struct ieee80211_supported_band *sband = 8622 wiphy->bands[ibss.chandef.chan->band]; 8623 8624 err = ieee80211_get_ratemask(sband, rates, n_rates, 8625 &ibss.basic_rates); 8626 if (err) 8627 return err; 8628 } 8629 8630 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8631 memcpy(&ibss.ht_capa_mask, 8632 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8633 sizeof(ibss.ht_capa_mask)); 8634 8635 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8636 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8637 return -EINVAL; 8638 memcpy(&ibss.ht_capa, 8639 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8640 sizeof(ibss.ht_capa)); 8641 } 8642 8643 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 8644 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 8645 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 8646 return -EINVAL; 8647 8648 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 8649 bool no_ht = false; 8650 8651 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht); 8652 if (IS_ERR(connkeys)) 8653 return PTR_ERR(connkeys); 8654 8655 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 8656 no_ht) { 8657 kzfree(connkeys); 8658 return -EINVAL; 8659 } 8660 } 8661 8662 ibss.control_port = 8663 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 8664 8665 ibss.userspace_handles_dfs = 8666 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 8667 8668 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 8669 if (err) 8670 kzfree(connkeys); 8671 return err; 8672 } 8673 8674 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 8675 { 8676 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8677 struct net_device *dev = info->user_ptr[1]; 8678 8679 if (!rdev->ops->leave_ibss) 8680 return -EOPNOTSUPP; 8681 8682 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 8683 return -EOPNOTSUPP; 8684 8685 return cfg80211_leave_ibss(rdev, dev, false); 8686 } 8687 8688 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 8689 { 8690 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8691 struct net_device *dev = info->user_ptr[1]; 8692 int mcast_rate[NUM_NL80211_BANDS]; 8693 u32 nla_rate; 8694 int err; 8695 8696 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 8697 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 8698 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB) 8699 return -EOPNOTSUPP; 8700 8701 if (!rdev->ops->set_mcast_rate) 8702 return -EOPNOTSUPP; 8703 8704 memset(mcast_rate, 0, sizeof(mcast_rate)); 8705 8706 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 8707 return -EINVAL; 8708 8709 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 8710 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 8711 return -EINVAL; 8712 8713 err = rdev_set_mcast_rate(rdev, dev, mcast_rate); 8714 8715 return err; 8716 } 8717 8718 static struct sk_buff * 8719 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 8720 struct wireless_dev *wdev, int approxlen, 8721 u32 portid, u32 seq, enum nl80211_commands cmd, 8722 enum nl80211_attrs attr, 8723 const struct nl80211_vendor_cmd_info *info, 8724 gfp_t gfp) 8725 { 8726 struct sk_buff *skb; 8727 void *hdr; 8728 struct nlattr *data; 8729 8730 skb = nlmsg_new(approxlen + 100, gfp); 8731 if (!skb) 8732 return NULL; 8733 8734 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 8735 if (!hdr) { 8736 kfree_skb(skb); 8737 return NULL; 8738 } 8739 8740 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 8741 goto nla_put_failure; 8742 8743 if (info) { 8744 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 8745 info->vendor_id)) 8746 goto nla_put_failure; 8747 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 8748 info->subcmd)) 8749 goto nla_put_failure; 8750 } 8751 8752 if (wdev) { 8753 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 8754 wdev_id(wdev), NL80211_ATTR_PAD)) 8755 goto nla_put_failure; 8756 if (wdev->netdev && 8757 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 8758 wdev->netdev->ifindex)) 8759 goto nla_put_failure; 8760 } 8761 8762 data = nla_nest_start(skb, attr); 8763 if (!data) 8764 goto nla_put_failure; 8765 8766 ((void **)skb->cb)[0] = rdev; 8767 ((void **)skb->cb)[1] = hdr; 8768 ((void **)skb->cb)[2] = data; 8769 8770 return skb; 8771 8772 nla_put_failure: 8773 kfree_skb(skb); 8774 return NULL; 8775 } 8776 8777 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 8778 struct wireless_dev *wdev, 8779 enum nl80211_commands cmd, 8780 enum nl80211_attrs attr, 8781 int vendor_event_idx, 8782 int approxlen, gfp_t gfp) 8783 { 8784 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 8785 const struct nl80211_vendor_cmd_info *info; 8786 8787 switch (cmd) { 8788 case NL80211_CMD_TESTMODE: 8789 if (WARN_ON(vendor_event_idx != -1)) 8790 return NULL; 8791 info = NULL; 8792 break; 8793 case NL80211_CMD_VENDOR: 8794 if (WARN_ON(vendor_event_idx < 0 || 8795 vendor_event_idx >= wiphy->n_vendor_events)) 8796 return NULL; 8797 info = &wiphy->vendor_events[vendor_event_idx]; 8798 break; 8799 default: 8800 WARN_ON(1); 8801 return NULL; 8802 } 8803 8804 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0, 8805 cmd, attr, info, gfp); 8806 } 8807 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 8808 8809 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 8810 { 8811 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 8812 void *hdr = ((void **)skb->cb)[1]; 8813 struct nlattr *data = ((void **)skb->cb)[2]; 8814 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 8815 8816 /* clear CB data for netlink core to own from now on */ 8817 memset(skb->cb, 0, sizeof(skb->cb)); 8818 8819 nla_nest_end(skb, data); 8820 genlmsg_end(skb, hdr); 8821 8822 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 8823 mcgrp = NL80211_MCGRP_VENDOR; 8824 8825 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 8826 mcgrp, gfp); 8827 } 8828 EXPORT_SYMBOL(__cfg80211_send_event_skb); 8829 8830 #ifdef CONFIG_NL80211_TESTMODE 8831 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 8832 { 8833 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8834 struct wireless_dev *wdev = 8835 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 8836 int err; 8837 8838 if (!rdev->ops->testmode_cmd) 8839 return -EOPNOTSUPP; 8840 8841 if (IS_ERR(wdev)) { 8842 err = PTR_ERR(wdev); 8843 if (err != -EINVAL) 8844 return err; 8845 wdev = NULL; 8846 } else if (wdev->wiphy != &rdev->wiphy) { 8847 return -EINVAL; 8848 } 8849 8850 if (!info->attrs[NL80211_ATTR_TESTDATA]) 8851 return -EINVAL; 8852 8853 rdev->cur_cmd_info = info; 8854 err = rdev_testmode_cmd(rdev, wdev, 8855 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 8856 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 8857 rdev->cur_cmd_info = NULL; 8858 8859 return err; 8860 } 8861 8862 static int nl80211_testmode_dump(struct sk_buff *skb, 8863 struct netlink_callback *cb) 8864 { 8865 struct cfg80211_registered_device *rdev; 8866 int err; 8867 long phy_idx; 8868 void *data = NULL; 8869 int data_len = 0; 8870 8871 rtnl_lock(); 8872 8873 if (cb->args[0]) { 8874 /* 8875 * 0 is a valid index, but not valid for args[0], 8876 * so we need to offset by 1. 8877 */ 8878 phy_idx = cb->args[0] - 1; 8879 8880 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 8881 if (!rdev) { 8882 err = -ENOENT; 8883 goto out_err; 8884 } 8885 } else { 8886 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 8887 8888 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 8889 attrbuf, nl80211_fam.maxattr, 8890 nl80211_policy, NULL); 8891 if (err) 8892 goto out_err; 8893 8894 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 8895 if (IS_ERR(rdev)) { 8896 err = PTR_ERR(rdev); 8897 goto out_err; 8898 } 8899 phy_idx = rdev->wiphy_idx; 8900 8901 if (attrbuf[NL80211_ATTR_TESTDATA]) 8902 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA]; 8903 } 8904 8905 if (cb->args[1]) { 8906 data = nla_data((void *)cb->args[1]); 8907 data_len = nla_len((void *)cb->args[1]); 8908 } 8909 8910 if (!rdev->ops->testmode_dump) { 8911 err = -EOPNOTSUPP; 8912 goto out_err; 8913 } 8914 8915 while (1) { 8916 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 8917 cb->nlh->nlmsg_seq, NLM_F_MULTI, 8918 NL80211_CMD_TESTMODE); 8919 struct nlattr *tmdata; 8920 8921 if (!hdr) 8922 break; 8923 8924 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 8925 genlmsg_cancel(skb, hdr); 8926 break; 8927 } 8928 8929 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 8930 if (!tmdata) { 8931 genlmsg_cancel(skb, hdr); 8932 break; 8933 } 8934 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 8935 nla_nest_end(skb, tmdata); 8936 8937 if (err == -ENOBUFS || err == -ENOENT) { 8938 genlmsg_cancel(skb, hdr); 8939 break; 8940 } else if (err) { 8941 genlmsg_cancel(skb, hdr); 8942 goto out_err; 8943 } 8944 8945 genlmsg_end(skb, hdr); 8946 } 8947 8948 err = skb->len; 8949 /* see above */ 8950 cb->args[0] = phy_idx + 1; 8951 out_err: 8952 rtnl_unlock(); 8953 return err; 8954 } 8955 #endif 8956 8957 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 8958 { 8959 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8960 struct net_device *dev = info->user_ptr[1]; 8961 struct cfg80211_connect_params connect; 8962 struct wiphy *wiphy; 8963 struct cfg80211_cached_keys *connkeys = NULL; 8964 int err; 8965 8966 memset(&connect, 0, sizeof(connect)); 8967 8968 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8969 return -EINVAL; 8970 8971 if (!info->attrs[NL80211_ATTR_SSID] || 8972 !nla_len(info->attrs[NL80211_ATTR_SSID])) 8973 return -EINVAL; 8974 8975 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 8976 connect.auth_type = 8977 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 8978 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 8979 NL80211_CMD_CONNECT)) 8980 return -EINVAL; 8981 } else 8982 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 8983 8984 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 8985 8986 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] && 8987 !wiphy_ext_feature_isset(&rdev->wiphy, 8988 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 8989 return -EINVAL; 8990 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS]; 8991 8992 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 8993 NL80211_MAX_NR_CIPHER_SUITES); 8994 if (err) 8995 return err; 8996 8997 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8998 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8999 return -EOPNOTSUPP; 9000 9001 wiphy = &rdev->wiphy; 9002 9003 connect.bg_scan_period = -1; 9004 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 9005 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 9006 connect.bg_scan_period = 9007 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 9008 } 9009 9010 if (info->attrs[NL80211_ATTR_MAC]) 9011 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9012 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 9013 connect.bssid_hint = 9014 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 9015 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 9016 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 9017 9018 if (info->attrs[NL80211_ATTR_IE]) { 9019 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9020 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9021 } 9022 9023 if (info->attrs[NL80211_ATTR_USE_MFP]) { 9024 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 9025 if (connect.mfp == NL80211_MFP_OPTIONAL && 9026 !wiphy_ext_feature_isset(&rdev->wiphy, 9027 NL80211_EXT_FEATURE_MFP_OPTIONAL)) 9028 return -EOPNOTSUPP; 9029 9030 if (connect.mfp != NL80211_MFP_REQUIRED && 9031 connect.mfp != NL80211_MFP_NO && 9032 connect.mfp != NL80211_MFP_OPTIONAL) 9033 return -EINVAL; 9034 } else { 9035 connect.mfp = NL80211_MFP_NO; 9036 } 9037 9038 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 9039 connect.prev_bssid = 9040 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 9041 9042 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 9043 connect.channel = nl80211_get_valid_chan( 9044 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 9045 if (!connect.channel) 9046 return -EINVAL; 9047 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 9048 connect.channel_hint = nl80211_get_valid_chan( 9049 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 9050 if (!connect.channel_hint) 9051 return -EINVAL; 9052 } 9053 9054 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 9055 connkeys = nl80211_parse_connkeys(rdev, info, NULL); 9056 if (IS_ERR(connkeys)) 9057 return PTR_ERR(connkeys); 9058 } 9059 9060 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 9061 connect.flags |= ASSOC_REQ_DISABLE_HT; 9062 9063 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 9064 memcpy(&connect.ht_capa_mask, 9065 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 9066 sizeof(connect.ht_capa_mask)); 9067 9068 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 9069 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 9070 kzfree(connkeys); 9071 return -EINVAL; 9072 } 9073 memcpy(&connect.ht_capa, 9074 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 9075 sizeof(connect.ht_capa)); 9076 } 9077 9078 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 9079 connect.flags |= ASSOC_REQ_DISABLE_VHT; 9080 9081 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 9082 memcpy(&connect.vht_capa_mask, 9083 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 9084 sizeof(connect.vht_capa_mask)); 9085 9086 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 9087 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 9088 kzfree(connkeys); 9089 return -EINVAL; 9090 } 9091 memcpy(&connect.vht_capa, 9092 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 9093 sizeof(connect.vht_capa)); 9094 } 9095 9096 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 9097 if (!((rdev->wiphy.features & 9098 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 9099 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 9100 !wiphy_ext_feature_isset(&rdev->wiphy, 9101 NL80211_EXT_FEATURE_RRM)) { 9102 kzfree(connkeys); 9103 return -EINVAL; 9104 } 9105 connect.flags |= ASSOC_REQ_USE_RRM; 9106 } 9107 9108 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 9109 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) { 9110 kzfree(connkeys); 9111 return -EOPNOTSUPP; 9112 } 9113 9114 if (info->attrs[NL80211_ATTR_BSS_SELECT]) { 9115 /* bss selection makes no sense if bssid is set */ 9116 if (connect.bssid) { 9117 kzfree(connkeys); 9118 return -EINVAL; 9119 } 9120 9121 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT], 9122 wiphy, &connect.bss_select); 9123 if (err) { 9124 kzfree(connkeys); 9125 return err; 9126 } 9127 } 9128 9129 if (wiphy_ext_feature_isset(&rdev->wiphy, 9130 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 9131 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] && 9132 info->attrs[NL80211_ATTR_FILS_ERP_REALM] && 9133 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] && 9134 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9135 connect.fils_erp_username = 9136 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9137 connect.fils_erp_username_len = 9138 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9139 connect.fils_erp_realm = 9140 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9141 connect.fils_erp_realm_len = 9142 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9143 connect.fils_erp_next_seq_num = 9144 nla_get_u16( 9145 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]); 9146 connect.fils_erp_rrk = 9147 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9148 connect.fils_erp_rrk_len = 9149 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9150 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] || 9151 info->attrs[NL80211_ATTR_FILS_ERP_REALM] || 9152 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] || 9153 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9154 kzfree(connkeys); 9155 return -EINVAL; 9156 } 9157 9158 wdev_lock(dev->ieee80211_ptr); 9159 9160 err = cfg80211_connect(rdev, dev, &connect, connkeys, 9161 connect.prev_bssid); 9162 if (err) 9163 kzfree(connkeys); 9164 9165 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 9166 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 9167 if (connect.bssid) 9168 memcpy(dev->ieee80211_ptr->disconnect_bssid, 9169 connect.bssid, ETH_ALEN); 9170 else 9171 memset(dev->ieee80211_ptr->disconnect_bssid, 9172 0, ETH_ALEN); 9173 } 9174 9175 wdev_unlock(dev->ieee80211_ptr); 9176 9177 return err; 9178 } 9179 9180 static int nl80211_update_connect_params(struct sk_buff *skb, 9181 struct genl_info *info) 9182 { 9183 struct cfg80211_connect_params connect = {}; 9184 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9185 struct net_device *dev = info->user_ptr[1]; 9186 struct wireless_dev *wdev = dev->ieee80211_ptr; 9187 u32 changed = 0; 9188 int ret; 9189 9190 if (!rdev->ops->update_connect_params) 9191 return -EOPNOTSUPP; 9192 9193 if (info->attrs[NL80211_ATTR_IE]) { 9194 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 9195 return -EINVAL; 9196 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9197 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9198 changed |= UPDATE_ASSOC_IES; 9199 } 9200 9201 wdev_lock(dev->ieee80211_ptr); 9202 if (!wdev->current_bss) 9203 ret = -ENOLINK; 9204 else 9205 ret = rdev_update_connect_params(rdev, dev, &connect, changed); 9206 wdev_unlock(dev->ieee80211_ptr); 9207 9208 return ret; 9209 } 9210 9211 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 9212 { 9213 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9214 struct net_device *dev = info->user_ptr[1]; 9215 u16 reason; 9216 int ret; 9217 9218 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 9219 reason = WLAN_REASON_DEAUTH_LEAVING; 9220 else 9221 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 9222 9223 if (reason == 0) 9224 return -EINVAL; 9225 9226 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9227 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9228 return -EOPNOTSUPP; 9229 9230 wdev_lock(dev->ieee80211_ptr); 9231 ret = cfg80211_disconnect(rdev, dev, reason, true); 9232 wdev_unlock(dev->ieee80211_ptr); 9233 return ret; 9234 } 9235 9236 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 9237 { 9238 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9239 struct net *net; 9240 int err; 9241 9242 if (info->attrs[NL80211_ATTR_PID]) { 9243 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 9244 9245 net = get_net_ns_by_pid(pid); 9246 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 9247 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 9248 9249 net = get_net_ns_by_fd(fd); 9250 } else { 9251 return -EINVAL; 9252 } 9253 9254 if (IS_ERR(net)) 9255 return PTR_ERR(net); 9256 9257 err = 0; 9258 9259 /* check if anything to do */ 9260 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 9261 err = cfg80211_switch_netns(rdev, net); 9262 9263 put_net(net); 9264 return err; 9265 } 9266 9267 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 9268 { 9269 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9270 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 9271 struct cfg80211_pmksa *pmksa) = NULL; 9272 struct net_device *dev = info->user_ptr[1]; 9273 struct cfg80211_pmksa pmksa; 9274 9275 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 9276 9277 if (!info->attrs[NL80211_ATTR_PMKID]) 9278 return -EINVAL; 9279 9280 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 9281 9282 if (info->attrs[NL80211_ATTR_MAC]) { 9283 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9284 } else if (info->attrs[NL80211_ATTR_SSID] && 9285 info->attrs[NL80211_ATTR_FILS_CACHE_ID] && 9286 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA || 9287 info->attrs[NL80211_ATTR_PMK])) { 9288 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 9289 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 9290 pmksa.cache_id = 9291 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]); 9292 } else { 9293 return -EINVAL; 9294 } 9295 if (info->attrs[NL80211_ATTR_PMK]) { 9296 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 9297 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 9298 } 9299 9300 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9301 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9302 return -EOPNOTSUPP; 9303 9304 switch (info->genlhdr->cmd) { 9305 case NL80211_CMD_SET_PMKSA: 9306 rdev_ops = rdev->ops->set_pmksa; 9307 break; 9308 case NL80211_CMD_DEL_PMKSA: 9309 rdev_ops = rdev->ops->del_pmksa; 9310 break; 9311 default: 9312 WARN_ON(1); 9313 break; 9314 } 9315 9316 if (!rdev_ops) 9317 return -EOPNOTSUPP; 9318 9319 return rdev_ops(&rdev->wiphy, dev, &pmksa); 9320 } 9321 9322 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 9323 { 9324 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9325 struct net_device *dev = info->user_ptr[1]; 9326 9327 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9328 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9329 return -EOPNOTSUPP; 9330 9331 if (!rdev->ops->flush_pmksa) 9332 return -EOPNOTSUPP; 9333 9334 return rdev_flush_pmksa(rdev, dev); 9335 } 9336 9337 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 9338 { 9339 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9340 struct net_device *dev = info->user_ptr[1]; 9341 u8 action_code, dialog_token; 9342 u32 peer_capability = 0; 9343 u16 status_code; 9344 u8 *peer; 9345 bool initiator; 9346 9347 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 9348 !rdev->ops->tdls_mgmt) 9349 return -EOPNOTSUPP; 9350 9351 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 9352 !info->attrs[NL80211_ATTR_STATUS_CODE] || 9353 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 9354 !info->attrs[NL80211_ATTR_IE] || 9355 !info->attrs[NL80211_ATTR_MAC]) 9356 return -EINVAL; 9357 9358 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 9359 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 9360 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 9361 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 9362 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 9363 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 9364 peer_capability = 9365 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 9366 9367 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 9368 dialog_token, status_code, peer_capability, 9369 initiator, 9370 nla_data(info->attrs[NL80211_ATTR_IE]), 9371 nla_len(info->attrs[NL80211_ATTR_IE])); 9372 } 9373 9374 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 9375 { 9376 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9377 struct net_device *dev = info->user_ptr[1]; 9378 enum nl80211_tdls_operation operation; 9379 u8 *peer; 9380 9381 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 9382 !rdev->ops->tdls_oper) 9383 return -EOPNOTSUPP; 9384 9385 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 9386 !info->attrs[NL80211_ATTR_MAC]) 9387 return -EINVAL; 9388 9389 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 9390 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 9391 9392 return rdev_tdls_oper(rdev, dev, peer, operation); 9393 } 9394 9395 static int nl80211_remain_on_channel(struct sk_buff *skb, 9396 struct genl_info *info) 9397 { 9398 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9399 struct wireless_dev *wdev = info->user_ptr[1]; 9400 struct cfg80211_chan_def chandef; 9401 const struct cfg80211_chan_def *compat_chandef; 9402 struct sk_buff *msg; 9403 void *hdr; 9404 u64 cookie; 9405 u32 duration; 9406 int err; 9407 9408 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 9409 !info->attrs[NL80211_ATTR_DURATION]) 9410 return -EINVAL; 9411 9412 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 9413 9414 if (!rdev->ops->remain_on_channel || 9415 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 9416 return -EOPNOTSUPP; 9417 9418 /* 9419 * We should be on that channel for at least a minimum amount of 9420 * time (10ms) but no longer than the driver supports. 9421 */ 9422 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 9423 duration > rdev->wiphy.max_remain_on_channel_duration) 9424 return -EINVAL; 9425 9426 err = nl80211_parse_chandef(rdev, info, &chandef); 9427 if (err) 9428 return err; 9429 9430 wdev_lock(wdev); 9431 if (!cfg80211_off_channel_oper_allowed(wdev) && 9432 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) { 9433 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef, 9434 &chandef); 9435 if (compat_chandef != &chandef) { 9436 wdev_unlock(wdev); 9437 return -EBUSY; 9438 } 9439 } 9440 wdev_unlock(wdev); 9441 9442 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9443 if (!msg) 9444 return -ENOMEM; 9445 9446 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9447 NL80211_CMD_REMAIN_ON_CHANNEL); 9448 if (!hdr) { 9449 err = -ENOBUFS; 9450 goto free_msg; 9451 } 9452 9453 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 9454 duration, &cookie); 9455 9456 if (err) 9457 goto free_msg; 9458 9459 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 9460 NL80211_ATTR_PAD)) 9461 goto nla_put_failure; 9462 9463 genlmsg_end(msg, hdr); 9464 9465 return genlmsg_reply(msg, info); 9466 9467 nla_put_failure: 9468 err = -ENOBUFS; 9469 free_msg: 9470 nlmsg_free(msg); 9471 return err; 9472 } 9473 9474 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 9475 struct genl_info *info) 9476 { 9477 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9478 struct wireless_dev *wdev = info->user_ptr[1]; 9479 u64 cookie; 9480 9481 if (!info->attrs[NL80211_ATTR_COOKIE]) 9482 return -EINVAL; 9483 9484 if (!rdev->ops->cancel_remain_on_channel) 9485 return -EOPNOTSUPP; 9486 9487 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 9488 9489 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 9490 } 9491 9492 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 9493 struct genl_info *info) 9494 { 9495 struct cfg80211_bitrate_mask mask; 9496 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9497 struct net_device *dev = info->user_ptr[1]; 9498 int err; 9499 9500 if (!rdev->ops->set_bitrate_mask) 9501 return -EOPNOTSUPP; 9502 9503 err = nl80211_parse_tx_bitrate_mask(info, &mask); 9504 if (err) 9505 return err; 9506 9507 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 9508 } 9509 9510 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 9511 { 9512 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9513 struct wireless_dev *wdev = info->user_ptr[1]; 9514 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 9515 9516 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 9517 return -EINVAL; 9518 9519 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 9520 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 9521 9522 switch (wdev->iftype) { 9523 case NL80211_IFTYPE_STATION: 9524 case NL80211_IFTYPE_ADHOC: 9525 case NL80211_IFTYPE_P2P_CLIENT: 9526 case NL80211_IFTYPE_AP: 9527 case NL80211_IFTYPE_AP_VLAN: 9528 case NL80211_IFTYPE_MESH_POINT: 9529 case NL80211_IFTYPE_P2P_GO: 9530 case NL80211_IFTYPE_P2P_DEVICE: 9531 break; 9532 case NL80211_IFTYPE_NAN: 9533 default: 9534 return -EOPNOTSUPP; 9535 } 9536 9537 /* not much point in registering if we can't reply */ 9538 if (!rdev->ops->mgmt_tx) 9539 return -EOPNOTSUPP; 9540 9541 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 9542 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 9543 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 9544 } 9545 9546 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 9547 { 9548 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9549 struct wireless_dev *wdev = info->user_ptr[1]; 9550 struct cfg80211_chan_def chandef; 9551 int err; 9552 void *hdr = NULL; 9553 u64 cookie; 9554 struct sk_buff *msg = NULL; 9555 struct cfg80211_mgmt_tx_params params = { 9556 .dont_wait_for_ack = 9557 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 9558 }; 9559 9560 if (!info->attrs[NL80211_ATTR_FRAME]) 9561 return -EINVAL; 9562 9563 if (!rdev->ops->mgmt_tx) 9564 return -EOPNOTSUPP; 9565 9566 switch (wdev->iftype) { 9567 case NL80211_IFTYPE_P2P_DEVICE: 9568 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 9569 return -EINVAL; 9570 case NL80211_IFTYPE_STATION: 9571 case NL80211_IFTYPE_ADHOC: 9572 case NL80211_IFTYPE_P2P_CLIENT: 9573 case NL80211_IFTYPE_AP: 9574 case NL80211_IFTYPE_AP_VLAN: 9575 case NL80211_IFTYPE_MESH_POINT: 9576 case NL80211_IFTYPE_P2P_GO: 9577 break; 9578 case NL80211_IFTYPE_NAN: 9579 default: 9580 return -EOPNOTSUPP; 9581 } 9582 9583 if (info->attrs[NL80211_ATTR_DURATION]) { 9584 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 9585 return -EINVAL; 9586 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 9587 9588 /* 9589 * We should wait on the channel for at least a minimum amount 9590 * of time (10ms) but no longer than the driver supports. 9591 */ 9592 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 9593 params.wait > rdev->wiphy.max_remain_on_channel_duration) 9594 return -EINVAL; 9595 } 9596 9597 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 9598 9599 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 9600 return -EINVAL; 9601 9602 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 9603 9604 /* get the channel if any has been specified, otherwise pass NULL to 9605 * the driver. The latter will use the current one 9606 */ 9607 chandef.chan = NULL; 9608 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 9609 err = nl80211_parse_chandef(rdev, info, &chandef); 9610 if (err) 9611 return err; 9612 } 9613 9614 if (!chandef.chan && params.offchan) 9615 return -EINVAL; 9616 9617 wdev_lock(wdev); 9618 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) { 9619 wdev_unlock(wdev); 9620 return -EBUSY; 9621 } 9622 wdev_unlock(wdev); 9623 9624 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 9625 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 9626 9627 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 9628 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 9629 int i; 9630 9631 if (len % sizeof(u16)) 9632 return -EINVAL; 9633 9634 params.n_csa_offsets = len / sizeof(u16); 9635 params.csa_offsets = 9636 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 9637 9638 /* check that all the offsets fit the frame */ 9639 for (i = 0; i < params.n_csa_offsets; i++) { 9640 if (params.csa_offsets[i] >= params.len) 9641 return -EINVAL; 9642 } 9643 } 9644 9645 if (!params.dont_wait_for_ack) { 9646 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9647 if (!msg) 9648 return -ENOMEM; 9649 9650 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9651 NL80211_CMD_FRAME); 9652 if (!hdr) { 9653 err = -ENOBUFS; 9654 goto free_msg; 9655 } 9656 } 9657 9658 params.chan = chandef.chan; 9659 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 9660 if (err) 9661 goto free_msg; 9662 9663 if (msg) { 9664 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 9665 NL80211_ATTR_PAD)) 9666 goto nla_put_failure; 9667 9668 genlmsg_end(msg, hdr); 9669 return genlmsg_reply(msg, info); 9670 } 9671 9672 return 0; 9673 9674 nla_put_failure: 9675 err = -ENOBUFS; 9676 free_msg: 9677 nlmsg_free(msg); 9678 return err; 9679 } 9680 9681 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 9682 { 9683 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9684 struct wireless_dev *wdev = info->user_ptr[1]; 9685 u64 cookie; 9686 9687 if (!info->attrs[NL80211_ATTR_COOKIE]) 9688 return -EINVAL; 9689 9690 if (!rdev->ops->mgmt_tx_cancel_wait) 9691 return -EOPNOTSUPP; 9692 9693 switch (wdev->iftype) { 9694 case NL80211_IFTYPE_STATION: 9695 case NL80211_IFTYPE_ADHOC: 9696 case NL80211_IFTYPE_P2P_CLIENT: 9697 case NL80211_IFTYPE_AP: 9698 case NL80211_IFTYPE_AP_VLAN: 9699 case NL80211_IFTYPE_P2P_GO: 9700 case NL80211_IFTYPE_P2P_DEVICE: 9701 break; 9702 case NL80211_IFTYPE_NAN: 9703 default: 9704 return -EOPNOTSUPP; 9705 } 9706 9707 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 9708 9709 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 9710 } 9711 9712 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 9713 { 9714 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9715 struct wireless_dev *wdev; 9716 struct net_device *dev = info->user_ptr[1]; 9717 u8 ps_state; 9718 bool state; 9719 int err; 9720 9721 if (!info->attrs[NL80211_ATTR_PS_STATE]) 9722 return -EINVAL; 9723 9724 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 9725 9726 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 9727 return -EINVAL; 9728 9729 wdev = dev->ieee80211_ptr; 9730 9731 if (!rdev->ops->set_power_mgmt) 9732 return -EOPNOTSUPP; 9733 9734 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 9735 9736 if (state == wdev->ps) 9737 return 0; 9738 9739 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 9740 if (!err) 9741 wdev->ps = state; 9742 return err; 9743 } 9744 9745 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 9746 { 9747 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9748 enum nl80211_ps_state ps_state; 9749 struct wireless_dev *wdev; 9750 struct net_device *dev = info->user_ptr[1]; 9751 struct sk_buff *msg; 9752 void *hdr; 9753 int err; 9754 9755 wdev = dev->ieee80211_ptr; 9756 9757 if (!rdev->ops->set_power_mgmt) 9758 return -EOPNOTSUPP; 9759 9760 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9761 if (!msg) 9762 return -ENOMEM; 9763 9764 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9765 NL80211_CMD_GET_POWER_SAVE); 9766 if (!hdr) { 9767 err = -ENOBUFS; 9768 goto free_msg; 9769 } 9770 9771 if (wdev->ps) 9772 ps_state = NL80211_PS_ENABLED; 9773 else 9774 ps_state = NL80211_PS_DISABLED; 9775 9776 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 9777 goto nla_put_failure; 9778 9779 genlmsg_end(msg, hdr); 9780 return genlmsg_reply(msg, info); 9781 9782 nla_put_failure: 9783 err = -ENOBUFS; 9784 free_msg: 9785 nlmsg_free(msg); 9786 return err; 9787 } 9788 9789 static const struct nla_policy 9790 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 9791 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY }, 9792 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 9793 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 9794 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 9795 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 9796 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 9797 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 }, 9798 }; 9799 9800 static int nl80211_set_cqm_txe(struct genl_info *info, 9801 u32 rate, u32 pkts, u32 intvl) 9802 { 9803 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9804 struct net_device *dev = info->user_ptr[1]; 9805 struct wireless_dev *wdev = dev->ieee80211_ptr; 9806 9807 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 9808 return -EINVAL; 9809 9810 if (!rdev->ops->set_cqm_txe_config) 9811 return -EOPNOTSUPP; 9812 9813 if (wdev->iftype != NL80211_IFTYPE_STATION && 9814 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 9815 return -EOPNOTSUPP; 9816 9817 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 9818 } 9819 9820 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev, 9821 struct net_device *dev) 9822 { 9823 struct wireless_dev *wdev = dev->ieee80211_ptr; 9824 s32 last, low, high; 9825 u32 hyst; 9826 int i, n; 9827 int err; 9828 9829 /* RSSI reporting disabled? */ 9830 if (!wdev->cqm_config) 9831 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0); 9832 9833 /* 9834 * Obtain current RSSI value if possible, if not and no RSSI threshold 9835 * event has been received yet, we should receive an event after a 9836 * connection is established and enough beacons received to calculate 9837 * the average. 9838 */ 9839 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss && 9840 rdev->ops->get_station) { 9841 struct station_info sinfo = {}; 9842 u8 *mac_addr; 9843 9844 mac_addr = wdev->current_bss->pub.bssid; 9845 9846 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 9847 if (err) 9848 return err; 9849 9850 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG)) 9851 wdev->cqm_config->last_rssi_event_value = 9852 (s8) sinfo.rx_beacon_signal_avg; 9853 } 9854 9855 last = wdev->cqm_config->last_rssi_event_value; 9856 hyst = wdev->cqm_config->rssi_hyst; 9857 n = wdev->cqm_config->n_rssi_thresholds; 9858 9859 for (i = 0; i < n; i++) 9860 if (last < wdev->cqm_config->rssi_thresholds[i]) 9861 break; 9862 9863 low = i > 0 ? 9864 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN; 9865 high = i < n ? 9866 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX; 9867 9868 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high); 9869 } 9870 9871 static int nl80211_set_cqm_rssi(struct genl_info *info, 9872 const s32 *thresholds, int n_thresholds, 9873 u32 hysteresis) 9874 { 9875 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9876 struct net_device *dev = info->user_ptr[1]; 9877 struct wireless_dev *wdev = dev->ieee80211_ptr; 9878 int i, err; 9879 s32 prev = S32_MIN; 9880 9881 /* Check all values negative and sorted */ 9882 for (i = 0; i < n_thresholds; i++) { 9883 if (thresholds[i] > 0 || thresholds[i] <= prev) 9884 return -EINVAL; 9885 9886 prev = thresholds[i]; 9887 } 9888 9889 if (wdev->iftype != NL80211_IFTYPE_STATION && 9890 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 9891 return -EOPNOTSUPP; 9892 9893 wdev_lock(wdev); 9894 cfg80211_cqm_config_free(wdev); 9895 wdev_unlock(wdev); 9896 9897 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) { 9898 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */ 9899 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0); 9900 9901 return rdev_set_cqm_rssi_config(rdev, dev, 9902 thresholds[0], hysteresis); 9903 } 9904 9905 if (!wiphy_ext_feature_isset(&rdev->wiphy, 9906 NL80211_EXT_FEATURE_CQM_RSSI_LIST)) 9907 return -EOPNOTSUPP; 9908 9909 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */ 9910 n_thresholds = 0; 9911 9912 wdev_lock(wdev); 9913 if (n_thresholds) { 9914 struct cfg80211_cqm_config *cqm_config; 9915 9916 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) + 9917 n_thresholds * sizeof(s32), GFP_KERNEL); 9918 if (!cqm_config) { 9919 err = -ENOMEM; 9920 goto unlock; 9921 } 9922 9923 cqm_config->rssi_hyst = hysteresis; 9924 cqm_config->n_rssi_thresholds = n_thresholds; 9925 memcpy(cqm_config->rssi_thresholds, thresholds, 9926 n_thresholds * sizeof(s32)); 9927 9928 wdev->cqm_config = cqm_config; 9929 } 9930 9931 err = cfg80211_cqm_rssi_update(rdev, dev); 9932 9933 unlock: 9934 wdev_unlock(wdev); 9935 9936 return err; 9937 } 9938 9939 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 9940 { 9941 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 9942 struct nlattr *cqm; 9943 int err; 9944 9945 cqm = info->attrs[NL80211_ATTR_CQM]; 9946 if (!cqm) 9947 return -EINVAL; 9948 9949 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 9950 nl80211_attr_cqm_policy, info->extack); 9951 if (err) 9952 return err; 9953 9954 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 9955 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 9956 const s32 *thresholds = 9957 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 9958 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 9959 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 9960 9961 if (len % 4) 9962 return -EINVAL; 9963 9964 return nl80211_set_cqm_rssi(info, thresholds, len / 4, 9965 hysteresis); 9966 } 9967 9968 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 9969 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 9970 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 9971 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 9972 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 9973 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 9974 9975 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 9976 } 9977 9978 return -EINVAL; 9979 } 9980 9981 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 9982 { 9983 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9984 struct net_device *dev = info->user_ptr[1]; 9985 struct ocb_setup setup = {}; 9986 int err; 9987 9988 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 9989 if (err) 9990 return err; 9991 9992 return cfg80211_join_ocb(rdev, dev, &setup); 9993 } 9994 9995 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 9996 { 9997 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9998 struct net_device *dev = info->user_ptr[1]; 9999 10000 return cfg80211_leave_ocb(rdev, dev); 10001 } 10002 10003 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 10004 { 10005 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10006 struct net_device *dev = info->user_ptr[1]; 10007 struct mesh_config cfg; 10008 struct mesh_setup setup; 10009 int err; 10010 10011 /* start with default */ 10012 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 10013 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 10014 10015 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 10016 /* and parse parameters if given */ 10017 err = nl80211_parse_mesh_config(info, &cfg, NULL); 10018 if (err) 10019 return err; 10020 } 10021 10022 if (!info->attrs[NL80211_ATTR_MESH_ID] || 10023 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 10024 return -EINVAL; 10025 10026 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 10027 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 10028 10029 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 10030 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 10031 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 10032 return -EINVAL; 10033 10034 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 10035 setup.beacon_interval = 10036 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 10037 10038 err = cfg80211_validate_beacon_int(rdev, 10039 NL80211_IFTYPE_MESH_POINT, 10040 setup.beacon_interval); 10041 if (err) 10042 return err; 10043 } 10044 10045 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 10046 setup.dtim_period = 10047 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 10048 if (setup.dtim_period < 1 || setup.dtim_period > 100) 10049 return -EINVAL; 10050 } 10051 10052 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 10053 /* parse additional setup parameters if given */ 10054 err = nl80211_parse_mesh_setup(info, &setup); 10055 if (err) 10056 return err; 10057 } 10058 10059 if (setup.user_mpm) 10060 cfg.auto_open_plinks = false; 10061 10062 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 10063 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 10064 if (err) 10065 return err; 10066 } else { 10067 /* cfg80211_join_mesh() will sort it out */ 10068 setup.chandef.chan = NULL; 10069 } 10070 10071 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 10072 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 10073 int n_rates = 10074 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 10075 struct ieee80211_supported_band *sband; 10076 10077 if (!setup.chandef.chan) 10078 return -EINVAL; 10079 10080 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 10081 10082 err = ieee80211_get_ratemask(sband, rates, n_rates, 10083 &setup.basic_rates); 10084 if (err) 10085 return err; 10086 } 10087 10088 if (info->attrs[NL80211_ATTR_TX_RATES]) { 10089 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate); 10090 if (err) 10091 return err; 10092 10093 if (!setup.chandef.chan) 10094 return -EINVAL; 10095 10096 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band, 10097 &setup.beacon_rate); 10098 if (err) 10099 return err; 10100 } 10101 10102 setup.userspace_handles_dfs = 10103 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 10104 10105 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 10106 } 10107 10108 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 10109 { 10110 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10111 struct net_device *dev = info->user_ptr[1]; 10112 10113 return cfg80211_leave_mesh(rdev, dev); 10114 } 10115 10116 #ifdef CONFIG_PM 10117 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 10118 struct cfg80211_registered_device *rdev) 10119 { 10120 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 10121 struct nlattr *nl_pats, *nl_pat; 10122 int i, pat_len; 10123 10124 if (!wowlan->n_patterns) 10125 return 0; 10126 10127 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 10128 if (!nl_pats) 10129 return -ENOBUFS; 10130 10131 for (i = 0; i < wowlan->n_patterns; i++) { 10132 nl_pat = nla_nest_start(msg, i + 1); 10133 if (!nl_pat) 10134 return -ENOBUFS; 10135 pat_len = wowlan->patterns[i].pattern_len; 10136 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 10137 wowlan->patterns[i].mask) || 10138 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 10139 wowlan->patterns[i].pattern) || 10140 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 10141 wowlan->patterns[i].pkt_offset)) 10142 return -ENOBUFS; 10143 nla_nest_end(msg, nl_pat); 10144 } 10145 nla_nest_end(msg, nl_pats); 10146 10147 return 0; 10148 } 10149 10150 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 10151 struct cfg80211_wowlan_tcp *tcp) 10152 { 10153 struct nlattr *nl_tcp; 10154 10155 if (!tcp) 10156 return 0; 10157 10158 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 10159 if (!nl_tcp) 10160 return -ENOBUFS; 10161 10162 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 10163 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 10164 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 10165 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 10166 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 10167 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 10168 tcp->payload_len, tcp->payload) || 10169 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 10170 tcp->data_interval) || 10171 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 10172 tcp->wake_len, tcp->wake_data) || 10173 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 10174 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 10175 return -ENOBUFS; 10176 10177 if (tcp->payload_seq.len && 10178 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 10179 sizeof(tcp->payload_seq), &tcp->payload_seq)) 10180 return -ENOBUFS; 10181 10182 if (tcp->payload_tok.len && 10183 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 10184 sizeof(tcp->payload_tok) + tcp->tokens_size, 10185 &tcp->payload_tok)) 10186 return -ENOBUFS; 10187 10188 nla_nest_end(msg, nl_tcp); 10189 10190 return 0; 10191 } 10192 10193 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 10194 struct cfg80211_sched_scan_request *req) 10195 { 10196 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan; 10197 int i; 10198 10199 if (!req) 10200 return 0; 10201 10202 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 10203 if (!nd) 10204 return -ENOBUFS; 10205 10206 if (req->n_scan_plans == 1 && 10207 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, 10208 req->scan_plans[0].interval * 1000)) 10209 return -ENOBUFS; 10210 10211 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 10212 return -ENOBUFS; 10213 10214 if (req->relative_rssi_set) { 10215 struct nl80211_bss_select_rssi_adjust rssi_adjust; 10216 10217 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI, 10218 req->relative_rssi)) 10219 return -ENOBUFS; 10220 10221 rssi_adjust.band = req->rssi_adjust.band; 10222 rssi_adjust.delta = req->rssi_adjust.delta; 10223 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST, 10224 sizeof(rssi_adjust), &rssi_adjust)) 10225 return -ENOBUFS; 10226 } 10227 10228 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 10229 if (!freqs) 10230 return -ENOBUFS; 10231 10232 for (i = 0; i < req->n_channels; i++) { 10233 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 10234 return -ENOBUFS; 10235 } 10236 10237 nla_nest_end(msg, freqs); 10238 10239 if (req->n_match_sets) { 10240 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 10241 if (!matches) 10242 return -ENOBUFS; 10243 10244 for (i = 0; i < req->n_match_sets; i++) { 10245 match = nla_nest_start(msg, i); 10246 if (!match) 10247 return -ENOBUFS; 10248 10249 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 10250 req->match_sets[i].ssid.ssid_len, 10251 req->match_sets[i].ssid.ssid)) 10252 return -ENOBUFS; 10253 nla_nest_end(msg, match); 10254 } 10255 nla_nest_end(msg, matches); 10256 } 10257 10258 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS); 10259 if (!scan_plans) 10260 return -ENOBUFS; 10261 10262 for (i = 0; i < req->n_scan_plans; i++) { 10263 scan_plan = nla_nest_start(msg, i + 1); 10264 if (!scan_plan) 10265 return -ENOBUFS; 10266 10267 if (!scan_plan || 10268 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL, 10269 req->scan_plans[i].interval) || 10270 (req->scan_plans[i].iterations && 10271 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS, 10272 req->scan_plans[i].iterations))) 10273 return -ENOBUFS; 10274 nla_nest_end(msg, scan_plan); 10275 } 10276 nla_nest_end(msg, scan_plans); 10277 10278 nla_nest_end(msg, nd); 10279 10280 return 0; 10281 } 10282 10283 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 10284 { 10285 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10286 struct sk_buff *msg; 10287 void *hdr; 10288 u32 size = NLMSG_DEFAULT_SIZE; 10289 10290 if (!rdev->wiphy.wowlan) 10291 return -EOPNOTSUPP; 10292 10293 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 10294 /* adjust size to have room for all the data */ 10295 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 10296 rdev->wiphy.wowlan_config->tcp->payload_len + 10297 rdev->wiphy.wowlan_config->tcp->wake_len + 10298 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 10299 } 10300 10301 msg = nlmsg_new(size, GFP_KERNEL); 10302 if (!msg) 10303 return -ENOMEM; 10304 10305 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10306 NL80211_CMD_GET_WOWLAN); 10307 if (!hdr) 10308 goto nla_put_failure; 10309 10310 if (rdev->wiphy.wowlan_config) { 10311 struct nlattr *nl_wowlan; 10312 10313 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 10314 if (!nl_wowlan) 10315 goto nla_put_failure; 10316 10317 if ((rdev->wiphy.wowlan_config->any && 10318 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 10319 (rdev->wiphy.wowlan_config->disconnect && 10320 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 10321 (rdev->wiphy.wowlan_config->magic_pkt && 10322 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 10323 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 10324 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 10325 (rdev->wiphy.wowlan_config->eap_identity_req && 10326 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 10327 (rdev->wiphy.wowlan_config->four_way_handshake && 10328 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 10329 (rdev->wiphy.wowlan_config->rfkill_release && 10330 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 10331 goto nla_put_failure; 10332 10333 if (nl80211_send_wowlan_patterns(msg, rdev)) 10334 goto nla_put_failure; 10335 10336 if (nl80211_send_wowlan_tcp(msg, 10337 rdev->wiphy.wowlan_config->tcp)) 10338 goto nla_put_failure; 10339 10340 if (nl80211_send_wowlan_nd( 10341 msg, 10342 rdev->wiphy.wowlan_config->nd_config)) 10343 goto nla_put_failure; 10344 10345 nla_nest_end(msg, nl_wowlan); 10346 } 10347 10348 genlmsg_end(msg, hdr); 10349 return genlmsg_reply(msg, info); 10350 10351 nla_put_failure: 10352 nlmsg_free(msg); 10353 return -ENOBUFS; 10354 } 10355 10356 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 10357 struct nlattr *attr, 10358 struct cfg80211_wowlan *trig) 10359 { 10360 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 10361 struct cfg80211_wowlan_tcp *cfg; 10362 struct nl80211_wowlan_tcp_data_token *tok = NULL; 10363 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 10364 u32 size; 10365 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 10366 int err, port; 10367 10368 if (!rdev->wiphy.wowlan->tcp) 10369 return -EINVAL; 10370 10371 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr, 10372 nl80211_wowlan_tcp_policy, NULL); 10373 if (err) 10374 return err; 10375 10376 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 10377 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 10378 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 10379 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 10380 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 10381 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 10382 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 10383 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 10384 return -EINVAL; 10385 10386 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 10387 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 10388 return -EINVAL; 10389 10390 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 10391 rdev->wiphy.wowlan->tcp->data_interval_max || 10392 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 10393 return -EINVAL; 10394 10395 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 10396 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 10397 return -EINVAL; 10398 10399 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 10400 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 10401 return -EINVAL; 10402 10403 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 10404 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 10405 10406 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 10407 tokens_size = tokln - sizeof(*tok); 10408 10409 if (!tok->len || tokens_size % tok->len) 10410 return -EINVAL; 10411 if (!rdev->wiphy.wowlan->tcp->tok) 10412 return -EINVAL; 10413 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 10414 return -EINVAL; 10415 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 10416 return -EINVAL; 10417 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 10418 return -EINVAL; 10419 if (tok->offset + tok->len > data_size) 10420 return -EINVAL; 10421 } 10422 10423 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 10424 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 10425 if (!rdev->wiphy.wowlan->tcp->seq) 10426 return -EINVAL; 10427 if (seq->len == 0 || seq->len > 4) 10428 return -EINVAL; 10429 if (seq->len + seq->offset > data_size) 10430 return -EINVAL; 10431 } 10432 10433 size = sizeof(*cfg); 10434 size += data_size; 10435 size += wake_size + wake_mask_size; 10436 size += tokens_size; 10437 10438 cfg = kzalloc(size, GFP_KERNEL); 10439 if (!cfg) 10440 return -ENOMEM; 10441 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 10442 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 10443 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 10444 ETH_ALEN); 10445 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 10446 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 10447 else 10448 port = 0; 10449 #ifdef CONFIG_INET 10450 /* allocate a socket and port for it and use it */ 10451 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 10452 IPPROTO_TCP, &cfg->sock, 1); 10453 if (err) { 10454 kfree(cfg); 10455 return err; 10456 } 10457 if (inet_csk_get_port(cfg->sock->sk, port)) { 10458 sock_release(cfg->sock); 10459 kfree(cfg); 10460 return -EADDRINUSE; 10461 } 10462 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 10463 #else 10464 if (!port) { 10465 kfree(cfg); 10466 return -EINVAL; 10467 } 10468 cfg->src_port = port; 10469 #endif 10470 10471 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 10472 cfg->payload_len = data_size; 10473 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 10474 memcpy((void *)cfg->payload, 10475 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 10476 data_size); 10477 if (seq) 10478 cfg->payload_seq = *seq; 10479 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 10480 cfg->wake_len = wake_size; 10481 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 10482 memcpy((void *)cfg->wake_data, 10483 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 10484 wake_size); 10485 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 10486 data_size + wake_size; 10487 memcpy((void *)cfg->wake_mask, 10488 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 10489 wake_mask_size); 10490 if (tok) { 10491 cfg->tokens_size = tokens_size; 10492 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 10493 } 10494 10495 trig->tcp = cfg; 10496 10497 return 0; 10498 } 10499 10500 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 10501 const struct wiphy_wowlan_support *wowlan, 10502 struct nlattr *attr, 10503 struct cfg80211_wowlan *trig) 10504 { 10505 struct nlattr **tb; 10506 int err; 10507 10508 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); 10509 if (!tb) 10510 return -ENOMEM; 10511 10512 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 10513 err = -EOPNOTSUPP; 10514 goto out; 10515 } 10516 10517 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy, 10518 NULL); 10519 if (err) 10520 goto out; 10521 10522 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb, 10523 wowlan->max_nd_match_sets); 10524 err = PTR_ERR_OR_ZERO(trig->nd_config); 10525 if (err) 10526 trig->nd_config = NULL; 10527 10528 out: 10529 kfree(tb); 10530 return err; 10531 } 10532 10533 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 10534 { 10535 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10536 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 10537 struct cfg80211_wowlan new_triggers = {}; 10538 struct cfg80211_wowlan *ntrig; 10539 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 10540 int err, i; 10541 bool prev_enabled = rdev->wiphy.wowlan_config; 10542 bool regular = false; 10543 10544 if (!wowlan) 10545 return -EOPNOTSUPP; 10546 10547 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 10548 cfg80211_rdev_free_wowlan(rdev); 10549 rdev->wiphy.wowlan_config = NULL; 10550 goto set_wakeup; 10551 } 10552 10553 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG, 10554 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS], 10555 nl80211_wowlan_policy, info->extack); 10556 if (err) 10557 return err; 10558 10559 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 10560 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 10561 return -EINVAL; 10562 new_triggers.any = true; 10563 } 10564 10565 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 10566 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 10567 return -EINVAL; 10568 new_triggers.disconnect = true; 10569 regular = true; 10570 } 10571 10572 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 10573 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 10574 return -EINVAL; 10575 new_triggers.magic_pkt = true; 10576 regular = true; 10577 } 10578 10579 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 10580 return -EINVAL; 10581 10582 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 10583 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 10584 return -EINVAL; 10585 new_triggers.gtk_rekey_failure = true; 10586 regular = true; 10587 } 10588 10589 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 10590 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 10591 return -EINVAL; 10592 new_triggers.eap_identity_req = true; 10593 regular = true; 10594 } 10595 10596 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 10597 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 10598 return -EINVAL; 10599 new_triggers.four_way_handshake = true; 10600 regular = true; 10601 } 10602 10603 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 10604 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 10605 return -EINVAL; 10606 new_triggers.rfkill_release = true; 10607 regular = true; 10608 } 10609 10610 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 10611 struct nlattr *pat; 10612 int n_patterns = 0; 10613 int rem, pat_len, mask_len, pkt_offset; 10614 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 10615 10616 regular = true; 10617 10618 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 10619 rem) 10620 n_patterns++; 10621 if (n_patterns > wowlan->n_patterns) 10622 return -EINVAL; 10623 10624 new_triggers.patterns = kcalloc(n_patterns, 10625 sizeof(new_triggers.patterns[0]), 10626 GFP_KERNEL); 10627 if (!new_triggers.patterns) 10628 return -ENOMEM; 10629 10630 new_triggers.n_patterns = n_patterns; 10631 i = 0; 10632 10633 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 10634 rem) { 10635 u8 *mask_pat; 10636 10637 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, 10638 nl80211_packet_pattern_policy, 10639 info->extack); 10640 err = -EINVAL; 10641 if (!pat_tb[NL80211_PKTPAT_MASK] || 10642 !pat_tb[NL80211_PKTPAT_PATTERN]) 10643 goto error; 10644 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 10645 mask_len = DIV_ROUND_UP(pat_len, 8); 10646 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 10647 goto error; 10648 if (pat_len > wowlan->pattern_max_len || 10649 pat_len < wowlan->pattern_min_len) 10650 goto error; 10651 10652 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 10653 pkt_offset = 0; 10654 else 10655 pkt_offset = nla_get_u32( 10656 pat_tb[NL80211_PKTPAT_OFFSET]); 10657 if (pkt_offset > wowlan->max_pkt_offset) 10658 goto error; 10659 new_triggers.patterns[i].pkt_offset = pkt_offset; 10660 10661 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 10662 if (!mask_pat) { 10663 err = -ENOMEM; 10664 goto error; 10665 } 10666 new_triggers.patterns[i].mask = mask_pat; 10667 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 10668 mask_len); 10669 mask_pat += mask_len; 10670 new_triggers.patterns[i].pattern = mask_pat; 10671 new_triggers.patterns[i].pattern_len = pat_len; 10672 memcpy(mask_pat, 10673 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 10674 pat_len); 10675 i++; 10676 } 10677 } 10678 10679 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 10680 regular = true; 10681 err = nl80211_parse_wowlan_tcp( 10682 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 10683 &new_triggers); 10684 if (err) 10685 goto error; 10686 } 10687 10688 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 10689 regular = true; 10690 err = nl80211_parse_wowlan_nd( 10691 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 10692 &new_triggers); 10693 if (err) 10694 goto error; 10695 } 10696 10697 /* The 'any' trigger means the device continues operating more or less 10698 * as in its normal operation mode and wakes up the host on most of the 10699 * normal interrupts (like packet RX, ...) 10700 * It therefore makes little sense to combine with the more constrained 10701 * wakeup trigger modes. 10702 */ 10703 if (new_triggers.any && regular) { 10704 err = -EINVAL; 10705 goto error; 10706 } 10707 10708 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 10709 if (!ntrig) { 10710 err = -ENOMEM; 10711 goto error; 10712 } 10713 cfg80211_rdev_free_wowlan(rdev); 10714 rdev->wiphy.wowlan_config = ntrig; 10715 10716 set_wakeup: 10717 if (rdev->ops->set_wakeup && 10718 prev_enabled != !!rdev->wiphy.wowlan_config) 10719 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 10720 10721 return 0; 10722 error: 10723 for (i = 0; i < new_triggers.n_patterns; i++) 10724 kfree(new_triggers.patterns[i].mask); 10725 kfree(new_triggers.patterns); 10726 if (new_triggers.tcp && new_triggers.tcp->sock) 10727 sock_release(new_triggers.tcp->sock); 10728 kfree(new_triggers.tcp); 10729 kfree(new_triggers.nd_config); 10730 return err; 10731 } 10732 #endif 10733 10734 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 10735 struct cfg80211_registered_device *rdev) 10736 { 10737 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 10738 int i, j, pat_len; 10739 struct cfg80211_coalesce_rules *rule; 10740 10741 if (!rdev->coalesce->n_rules) 10742 return 0; 10743 10744 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 10745 if (!nl_rules) 10746 return -ENOBUFS; 10747 10748 for (i = 0; i < rdev->coalesce->n_rules; i++) { 10749 nl_rule = nla_nest_start(msg, i + 1); 10750 if (!nl_rule) 10751 return -ENOBUFS; 10752 10753 rule = &rdev->coalesce->rules[i]; 10754 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 10755 rule->delay)) 10756 return -ENOBUFS; 10757 10758 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 10759 rule->condition)) 10760 return -ENOBUFS; 10761 10762 nl_pats = nla_nest_start(msg, 10763 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 10764 if (!nl_pats) 10765 return -ENOBUFS; 10766 10767 for (j = 0; j < rule->n_patterns; j++) { 10768 nl_pat = nla_nest_start(msg, j + 1); 10769 if (!nl_pat) 10770 return -ENOBUFS; 10771 pat_len = rule->patterns[j].pattern_len; 10772 if (nla_put(msg, NL80211_PKTPAT_MASK, 10773 DIV_ROUND_UP(pat_len, 8), 10774 rule->patterns[j].mask) || 10775 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 10776 rule->patterns[j].pattern) || 10777 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 10778 rule->patterns[j].pkt_offset)) 10779 return -ENOBUFS; 10780 nla_nest_end(msg, nl_pat); 10781 } 10782 nla_nest_end(msg, nl_pats); 10783 nla_nest_end(msg, nl_rule); 10784 } 10785 nla_nest_end(msg, nl_rules); 10786 10787 return 0; 10788 } 10789 10790 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 10791 { 10792 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10793 struct sk_buff *msg; 10794 void *hdr; 10795 10796 if (!rdev->wiphy.coalesce) 10797 return -EOPNOTSUPP; 10798 10799 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10800 if (!msg) 10801 return -ENOMEM; 10802 10803 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10804 NL80211_CMD_GET_COALESCE); 10805 if (!hdr) 10806 goto nla_put_failure; 10807 10808 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 10809 goto nla_put_failure; 10810 10811 genlmsg_end(msg, hdr); 10812 return genlmsg_reply(msg, info); 10813 10814 nla_put_failure: 10815 nlmsg_free(msg); 10816 return -ENOBUFS; 10817 } 10818 10819 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 10820 { 10821 struct cfg80211_coalesce *coalesce = rdev->coalesce; 10822 int i, j; 10823 struct cfg80211_coalesce_rules *rule; 10824 10825 if (!coalesce) 10826 return; 10827 10828 for (i = 0; i < coalesce->n_rules; i++) { 10829 rule = &coalesce->rules[i]; 10830 for (j = 0; j < rule->n_patterns; j++) 10831 kfree(rule->patterns[j].mask); 10832 kfree(rule->patterns); 10833 } 10834 kfree(coalesce->rules); 10835 kfree(coalesce); 10836 rdev->coalesce = NULL; 10837 } 10838 10839 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 10840 struct nlattr *rule, 10841 struct cfg80211_coalesce_rules *new_rule) 10842 { 10843 int err, i; 10844 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 10845 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 10846 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 10847 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 10848 10849 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule, 10850 nl80211_coalesce_policy, NULL); 10851 if (err) 10852 return err; 10853 10854 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 10855 new_rule->delay = 10856 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 10857 if (new_rule->delay > coalesce->max_delay) 10858 return -EINVAL; 10859 10860 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 10861 new_rule->condition = 10862 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 10863 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 10864 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 10865 return -EINVAL; 10866 10867 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 10868 return -EINVAL; 10869 10870 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 10871 rem) 10872 n_patterns++; 10873 if (n_patterns > coalesce->n_patterns) 10874 return -EINVAL; 10875 10876 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 10877 GFP_KERNEL); 10878 if (!new_rule->patterns) 10879 return -ENOMEM; 10880 10881 new_rule->n_patterns = n_patterns; 10882 i = 0; 10883 10884 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 10885 rem) { 10886 u8 *mask_pat; 10887 10888 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, 10889 nl80211_packet_pattern_policy, NULL); 10890 if (!pat_tb[NL80211_PKTPAT_MASK] || 10891 !pat_tb[NL80211_PKTPAT_PATTERN]) 10892 return -EINVAL; 10893 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 10894 mask_len = DIV_ROUND_UP(pat_len, 8); 10895 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 10896 return -EINVAL; 10897 if (pat_len > coalesce->pattern_max_len || 10898 pat_len < coalesce->pattern_min_len) 10899 return -EINVAL; 10900 10901 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 10902 pkt_offset = 0; 10903 else 10904 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 10905 if (pkt_offset > coalesce->max_pkt_offset) 10906 return -EINVAL; 10907 new_rule->patterns[i].pkt_offset = pkt_offset; 10908 10909 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 10910 if (!mask_pat) 10911 return -ENOMEM; 10912 10913 new_rule->patterns[i].mask = mask_pat; 10914 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 10915 mask_len); 10916 10917 mask_pat += mask_len; 10918 new_rule->patterns[i].pattern = mask_pat; 10919 new_rule->patterns[i].pattern_len = pat_len; 10920 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 10921 pat_len); 10922 i++; 10923 } 10924 10925 return 0; 10926 } 10927 10928 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 10929 { 10930 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10931 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 10932 struct cfg80211_coalesce new_coalesce = {}; 10933 struct cfg80211_coalesce *n_coalesce; 10934 int err, rem_rule, n_rules = 0, i, j; 10935 struct nlattr *rule; 10936 struct cfg80211_coalesce_rules *tmp_rule; 10937 10938 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 10939 return -EOPNOTSUPP; 10940 10941 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 10942 cfg80211_rdev_free_coalesce(rdev); 10943 rdev_set_coalesce(rdev, NULL); 10944 return 0; 10945 } 10946 10947 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 10948 rem_rule) 10949 n_rules++; 10950 if (n_rules > coalesce->n_rules) 10951 return -EINVAL; 10952 10953 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 10954 GFP_KERNEL); 10955 if (!new_coalesce.rules) 10956 return -ENOMEM; 10957 10958 new_coalesce.n_rules = n_rules; 10959 i = 0; 10960 10961 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 10962 rem_rule) { 10963 err = nl80211_parse_coalesce_rule(rdev, rule, 10964 &new_coalesce.rules[i]); 10965 if (err) 10966 goto error; 10967 10968 i++; 10969 } 10970 10971 err = rdev_set_coalesce(rdev, &new_coalesce); 10972 if (err) 10973 goto error; 10974 10975 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 10976 if (!n_coalesce) { 10977 err = -ENOMEM; 10978 goto error; 10979 } 10980 cfg80211_rdev_free_coalesce(rdev); 10981 rdev->coalesce = n_coalesce; 10982 10983 return 0; 10984 error: 10985 for (i = 0; i < new_coalesce.n_rules; i++) { 10986 tmp_rule = &new_coalesce.rules[i]; 10987 for (j = 0; j < tmp_rule->n_patterns; j++) 10988 kfree(tmp_rule->patterns[j].mask); 10989 kfree(tmp_rule->patterns); 10990 } 10991 kfree(new_coalesce.rules); 10992 10993 return err; 10994 } 10995 10996 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 10997 { 10998 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10999 struct net_device *dev = info->user_ptr[1]; 11000 struct wireless_dev *wdev = dev->ieee80211_ptr; 11001 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 11002 struct cfg80211_gtk_rekey_data rekey_data; 11003 int err; 11004 11005 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 11006 return -EINVAL; 11007 11008 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA, 11009 info->attrs[NL80211_ATTR_REKEY_DATA], 11010 nl80211_rekey_policy, info->extack); 11011 if (err) 11012 return err; 11013 11014 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] || 11015 !tb[NL80211_REKEY_DATA_KCK]) 11016 return -EINVAL; 11017 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 11018 return -ERANGE; 11019 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 11020 return -ERANGE; 11021 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 11022 return -ERANGE; 11023 11024 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 11025 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 11026 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 11027 11028 wdev_lock(wdev); 11029 if (!wdev->current_bss) { 11030 err = -ENOTCONN; 11031 goto out; 11032 } 11033 11034 if (!rdev->ops->set_rekey_data) { 11035 err = -EOPNOTSUPP; 11036 goto out; 11037 } 11038 11039 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 11040 out: 11041 wdev_unlock(wdev); 11042 return err; 11043 } 11044 11045 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 11046 struct genl_info *info) 11047 { 11048 struct net_device *dev = info->user_ptr[1]; 11049 struct wireless_dev *wdev = dev->ieee80211_ptr; 11050 11051 if (wdev->iftype != NL80211_IFTYPE_AP && 11052 wdev->iftype != NL80211_IFTYPE_P2P_GO) 11053 return -EINVAL; 11054 11055 if (wdev->ap_unexpected_nlportid) 11056 return -EBUSY; 11057 11058 wdev->ap_unexpected_nlportid = info->snd_portid; 11059 return 0; 11060 } 11061 11062 static int nl80211_probe_client(struct sk_buff *skb, 11063 struct genl_info *info) 11064 { 11065 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11066 struct net_device *dev = info->user_ptr[1]; 11067 struct wireless_dev *wdev = dev->ieee80211_ptr; 11068 struct sk_buff *msg; 11069 void *hdr; 11070 const u8 *addr; 11071 u64 cookie; 11072 int err; 11073 11074 if (wdev->iftype != NL80211_IFTYPE_AP && 11075 wdev->iftype != NL80211_IFTYPE_P2P_GO) 11076 return -EOPNOTSUPP; 11077 11078 if (!info->attrs[NL80211_ATTR_MAC]) 11079 return -EINVAL; 11080 11081 if (!rdev->ops->probe_client) 11082 return -EOPNOTSUPP; 11083 11084 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11085 if (!msg) 11086 return -ENOMEM; 11087 11088 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11089 NL80211_CMD_PROBE_CLIENT); 11090 if (!hdr) { 11091 err = -ENOBUFS; 11092 goto free_msg; 11093 } 11094 11095 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 11096 11097 err = rdev_probe_client(rdev, dev, addr, &cookie); 11098 if (err) 11099 goto free_msg; 11100 11101 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 11102 NL80211_ATTR_PAD)) 11103 goto nla_put_failure; 11104 11105 genlmsg_end(msg, hdr); 11106 11107 return genlmsg_reply(msg, info); 11108 11109 nla_put_failure: 11110 err = -ENOBUFS; 11111 free_msg: 11112 nlmsg_free(msg); 11113 return err; 11114 } 11115 11116 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 11117 { 11118 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11119 struct cfg80211_beacon_registration *reg, *nreg; 11120 int rv; 11121 11122 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 11123 return -EOPNOTSUPP; 11124 11125 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 11126 if (!nreg) 11127 return -ENOMEM; 11128 11129 /* First, check if already registered. */ 11130 spin_lock_bh(&rdev->beacon_registrations_lock); 11131 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 11132 if (reg->nlportid == info->snd_portid) { 11133 rv = -EALREADY; 11134 goto out_err; 11135 } 11136 } 11137 /* Add it to the list */ 11138 nreg->nlportid = info->snd_portid; 11139 list_add(&nreg->list, &rdev->beacon_registrations); 11140 11141 spin_unlock_bh(&rdev->beacon_registrations_lock); 11142 11143 return 0; 11144 out_err: 11145 spin_unlock_bh(&rdev->beacon_registrations_lock); 11146 kfree(nreg); 11147 return rv; 11148 } 11149 11150 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 11151 { 11152 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11153 struct wireless_dev *wdev = info->user_ptr[1]; 11154 int err; 11155 11156 if (!rdev->ops->start_p2p_device) 11157 return -EOPNOTSUPP; 11158 11159 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 11160 return -EOPNOTSUPP; 11161 11162 if (wdev_running(wdev)) 11163 return 0; 11164 11165 if (rfkill_blocked(rdev->rfkill)) 11166 return -ERFKILL; 11167 11168 err = rdev_start_p2p_device(rdev, wdev); 11169 if (err) 11170 return err; 11171 11172 wdev->is_running = true; 11173 rdev->opencount++; 11174 11175 return 0; 11176 } 11177 11178 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 11179 { 11180 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11181 struct wireless_dev *wdev = info->user_ptr[1]; 11182 11183 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 11184 return -EOPNOTSUPP; 11185 11186 if (!rdev->ops->stop_p2p_device) 11187 return -EOPNOTSUPP; 11188 11189 cfg80211_stop_p2p_device(rdev, wdev); 11190 11191 return 0; 11192 } 11193 11194 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info) 11195 { 11196 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11197 struct wireless_dev *wdev = info->user_ptr[1]; 11198 struct cfg80211_nan_conf conf = {}; 11199 int err; 11200 11201 if (wdev->iftype != NL80211_IFTYPE_NAN) 11202 return -EOPNOTSUPP; 11203 11204 if (wdev_running(wdev)) 11205 return -EEXIST; 11206 11207 if (rfkill_blocked(rdev->rfkill)) 11208 return -ERFKILL; 11209 11210 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) 11211 return -EINVAL; 11212 11213 conf.master_pref = 11214 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 11215 if (!conf.master_pref) 11216 return -EINVAL; 11217 11218 if (info->attrs[NL80211_ATTR_BANDS]) { 11219 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 11220 11221 if (bands & ~(u32)wdev->wiphy->nan_supported_bands) 11222 return -EOPNOTSUPP; 11223 11224 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 11225 return -EINVAL; 11226 11227 conf.bands = bands; 11228 } 11229 11230 err = rdev_start_nan(rdev, wdev, &conf); 11231 if (err) 11232 return err; 11233 11234 wdev->is_running = true; 11235 rdev->opencount++; 11236 11237 return 0; 11238 } 11239 11240 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info) 11241 { 11242 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11243 struct wireless_dev *wdev = info->user_ptr[1]; 11244 11245 if (wdev->iftype != NL80211_IFTYPE_NAN) 11246 return -EOPNOTSUPP; 11247 11248 cfg80211_stop_nan(rdev, wdev); 11249 11250 return 0; 11251 } 11252 11253 static int validate_nan_filter(struct nlattr *filter_attr) 11254 { 11255 struct nlattr *attr; 11256 int len = 0, n_entries = 0, rem; 11257 11258 nla_for_each_nested(attr, filter_attr, rem) { 11259 len += nla_len(attr); 11260 n_entries++; 11261 } 11262 11263 if (len >= U8_MAX) 11264 return -EINVAL; 11265 11266 return n_entries; 11267 } 11268 11269 static int handle_nan_filter(struct nlattr *attr_filter, 11270 struct cfg80211_nan_func *func, 11271 bool tx) 11272 { 11273 struct nlattr *attr; 11274 int n_entries, rem, i; 11275 struct cfg80211_nan_func_filter *filter; 11276 11277 n_entries = validate_nan_filter(attr_filter); 11278 if (n_entries < 0) 11279 return n_entries; 11280 11281 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters)); 11282 11283 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL); 11284 if (!filter) 11285 return -ENOMEM; 11286 11287 i = 0; 11288 nla_for_each_nested(attr, attr_filter, rem) { 11289 filter[i].filter = nla_memdup(attr, GFP_KERNEL); 11290 filter[i].len = nla_len(attr); 11291 i++; 11292 } 11293 if (tx) { 11294 func->num_tx_filters = n_entries; 11295 func->tx_filters = filter; 11296 } else { 11297 func->num_rx_filters = n_entries; 11298 func->rx_filters = filter; 11299 } 11300 11301 return 0; 11302 } 11303 11304 static int nl80211_nan_add_func(struct sk_buff *skb, 11305 struct genl_info *info) 11306 { 11307 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11308 struct wireless_dev *wdev = info->user_ptr[1]; 11309 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr; 11310 struct cfg80211_nan_func *func; 11311 struct sk_buff *msg = NULL; 11312 void *hdr = NULL; 11313 int err = 0; 11314 11315 if (wdev->iftype != NL80211_IFTYPE_NAN) 11316 return -EOPNOTSUPP; 11317 11318 if (!wdev_running(wdev)) 11319 return -ENOTCONN; 11320 11321 if (!info->attrs[NL80211_ATTR_NAN_FUNC]) 11322 return -EINVAL; 11323 11324 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX, 11325 info->attrs[NL80211_ATTR_NAN_FUNC], 11326 nl80211_nan_func_policy, info->extack); 11327 if (err) 11328 return err; 11329 11330 func = kzalloc(sizeof(*func), GFP_KERNEL); 11331 if (!func) 11332 return -ENOMEM; 11333 11334 func->cookie = wdev->wiphy->cookie_counter++; 11335 11336 if (!tb[NL80211_NAN_FUNC_TYPE] || 11337 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) { 11338 err = -EINVAL; 11339 goto out; 11340 } 11341 11342 11343 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]); 11344 11345 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) { 11346 err = -EINVAL; 11347 goto out; 11348 } 11349 11350 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]), 11351 sizeof(func->service_id)); 11352 11353 func->close_range = 11354 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]); 11355 11356 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) { 11357 func->serv_spec_info_len = 11358 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]); 11359 func->serv_spec_info = 11360 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]), 11361 func->serv_spec_info_len, 11362 GFP_KERNEL); 11363 if (!func->serv_spec_info) { 11364 err = -ENOMEM; 11365 goto out; 11366 } 11367 } 11368 11369 if (tb[NL80211_NAN_FUNC_TTL]) 11370 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]); 11371 11372 switch (func->type) { 11373 case NL80211_NAN_FUNC_PUBLISH: 11374 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) { 11375 err = -EINVAL; 11376 goto out; 11377 } 11378 11379 func->publish_type = 11380 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]); 11381 func->publish_bcast = 11382 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]); 11383 11384 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) && 11385 func->publish_bcast) { 11386 err = -EINVAL; 11387 goto out; 11388 } 11389 break; 11390 case NL80211_NAN_FUNC_SUBSCRIBE: 11391 func->subscribe_active = 11392 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]); 11393 break; 11394 case NL80211_NAN_FUNC_FOLLOW_UP: 11395 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] || 11396 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] || 11397 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) { 11398 err = -EINVAL; 11399 goto out; 11400 } 11401 11402 func->followup_id = 11403 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]); 11404 func->followup_reqid = 11405 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]); 11406 memcpy(func->followup_dest.addr, 11407 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]), 11408 sizeof(func->followup_dest.addr)); 11409 if (func->ttl) { 11410 err = -EINVAL; 11411 goto out; 11412 } 11413 break; 11414 default: 11415 err = -EINVAL; 11416 goto out; 11417 } 11418 11419 if (tb[NL80211_NAN_FUNC_SRF]) { 11420 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR]; 11421 11422 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX, 11423 tb[NL80211_NAN_FUNC_SRF], 11424 nl80211_nan_srf_policy, info->extack); 11425 if (err) 11426 goto out; 11427 11428 func->srf_include = 11429 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]); 11430 11431 if (srf_tb[NL80211_NAN_SRF_BF]) { 11432 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] || 11433 !srf_tb[NL80211_NAN_SRF_BF_IDX]) { 11434 err = -EINVAL; 11435 goto out; 11436 } 11437 11438 func->srf_bf_len = 11439 nla_len(srf_tb[NL80211_NAN_SRF_BF]); 11440 func->srf_bf = 11441 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]), 11442 func->srf_bf_len, GFP_KERNEL); 11443 if (!func->srf_bf) { 11444 err = -ENOMEM; 11445 goto out; 11446 } 11447 11448 func->srf_bf_idx = 11449 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]); 11450 } else { 11451 struct nlattr *attr, *mac_attr = 11452 srf_tb[NL80211_NAN_SRF_MAC_ADDRS]; 11453 int n_entries, rem, i = 0; 11454 11455 if (!mac_attr) { 11456 err = -EINVAL; 11457 goto out; 11458 } 11459 11460 n_entries = validate_acl_mac_addrs(mac_attr); 11461 if (n_entries <= 0) { 11462 err = -EINVAL; 11463 goto out; 11464 } 11465 11466 func->srf_num_macs = n_entries; 11467 func->srf_macs = 11468 kzalloc(sizeof(*func->srf_macs) * n_entries, 11469 GFP_KERNEL); 11470 if (!func->srf_macs) { 11471 err = -ENOMEM; 11472 goto out; 11473 } 11474 11475 nla_for_each_nested(attr, mac_attr, rem) 11476 memcpy(func->srf_macs[i++].addr, nla_data(attr), 11477 sizeof(*func->srf_macs)); 11478 } 11479 } 11480 11481 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) { 11482 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER], 11483 func, true); 11484 if (err) 11485 goto out; 11486 } 11487 11488 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) { 11489 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER], 11490 func, false); 11491 if (err) 11492 goto out; 11493 } 11494 11495 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11496 if (!msg) { 11497 err = -ENOMEM; 11498 goto out; 11499 } 11500 11501 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11502 NL80211_CMD_ADD_NAN_FUNCTION); 11503 /* This can't really happen - we just allocated 4KB */ 11504 if (WARN_ON(!hdr)) { 11505 err = -ENOMEM; 11506 goto out; 11507 } 11508 11509 err = rdev_add_nan_func(rdev, wdev, func); 11510 out: 11511 if (err < 0) { 11512 cfg80211_free_nan_func(func); 11513 nlmsg_free(msg); 11514 return err; 11515 } 11516 11517 /* propagate the instance id and cookie to userspace */ 11518 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie, 11519 NL80211_ATTR_PAD)) 11520 goto nla_put_failure; 11521 11522 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC); 11523 if (!func_attr) 11524 goto nla_put_failure; 11525 11526 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, 11527 func->instance_id)) 11528 goto nla_put_failure; 11529 11530 nla_nest_end(msg, func_attr); 11531 11532 genlmsg_end(msg, hdr); 11533 return genlmsg_reply(msg, info); 11534 11535 nla_put_failure: 11536 nlmsg_free(msg); 11537 return -ENOBUFS; 11538 } 11539 11540 static int nl80211_nan_del_func(struct sk_buff *skb, 11541 struct genl_info *info) 11542 { 11543 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11544 struct wireless_dev *wdev = info->user_ptr[1]; 11545 u64 cookie; 11546 11547 if (wdev->iftype != NL80211_IFTYPE_NAN) 11548 return -EOPNOTSUPP; 11549 11550 if (!wdev_running(wdev)) 11551 return -ENOTCONN; 11552 11553 if (!info->attrs[NL80211_ATTR_COOKIE]) 11554 return -EINVAL; 11555 11556 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 11557 11558 rdev_del_nan_func(rdev, wdev, cookie); 11559 11560 return 0; 11561 } 11562 11563 static int nl80211_nan_change_config(struct sk_buff *skb, 11564 struct genl_info *info) 11565 { 11566 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11567 struct wireless_dev *wdev = info->user_ptr[1]; 11568 struct cfg80211_nan_conf conf = {}; 11569 u32 changed = 0; 11570 11571 if (wdev->iftype != NL80211_IFTYPE_NAN) 11572 return -EOPNOTSUPP; 11573 11574 if (!wdev_running(wdev)) 11575 return -ENOTCONN; 11576 11577 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) { 11578 conf.master_pref = 11579 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 11580 if (conf.master_pref <= 1 || conf.master_pref == 255) 11581 return -EINVAL; 11582 11583 changed |= CFG80211_NAN_CONF_CHANGED_PREF; 11584 } 11585 11586 if (info->attrs[NL80211_ATTR_BANDS]) { 11587 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 11588 11589 if (bands & ~(u32)wdev->wiphy->nan_supported_bands) 11590 return -EOPNOTSUPP; 11591 11592 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 11593 return -EINVAL; 11594 11595 conf.bands = bands; 11596 changed |= CFG80211_NAN_CONF_CHANGED_BANDS; 11597 } 11598 11599 if (!changed) 11600 return -EINVAL; 11601 11602 return rdev_nan_change_conf(rdev, wdev, &conf, changed); 11603 } 11604 11605 void cfg80211_nan_match(struct wireless_dev *wdev, 11606 struct cfg80211_nan_match_params *match, gfp_t gfp) 11607 { 11608 struct wiphy *wiphy = wdev->wiphy; 11609 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11610 struct nlattr *match_attr, *local_func_attr, *peer_func_attr; 11611 struct sk_buff *msg; 11612 void *hdr; 11613 11614 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr)) 11615 return; 11616 11617 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11618 if (!msg) 11619 return; 11620 11621 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH); 11622 if (!hdr) { 11623 nlmsg_free(msg); 11624 return; 11625 } 11626 11627 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11628 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11629 wdev->netdev->ifindex)) || 11630 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 11631 NL80211_ATTR_PAD)) 11632 goto nla_put_failure; 11633 11634 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie, 11635 NL80211_ATTR_PAD) || 11636 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr)) 11637 goto nla_put_failure; 11638 11639 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH); 11640 if (!match_attr) 11641 goto nla_put_failure; 11642 11643 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL); 11644 if (!local_func_attr) 11645 goto nla_put_failure; 11646 11647 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id)) 11648 goto nla_put_failure; 11649 11650 nla_nest_end(msg, local_func_attr); 11651 11652 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER); 11653 if (!peer_func_attr) 11654 goto nla_put_failure; 11655 11656 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) || 11657 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id)) 11658 goto nla_put_failure; 11659 11660 if (match->info && match->info_len && 11661 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len, 11662 match->info)) 11663 goto nla_put_failure; 11664 11665 nla_nest_end(msg, peer_func_attr); 11666 nla_nest_end(msg, match_attr); 11667 genlmsg_end(msg, hdr); 11668 11669 if (!wdev->owner_nlportid) 11670 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 11671 msg, 0, NL80211_MCGRP_NAN, gfp); 11672 else 11673 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 11674 wdev->owner_nlportid); 11675 11676 return; 11677 11678 nla_put_failure: 11679 nlmsg_free(msg); 11680 } 11681 EXPORT_SYMBOL(cfg80211_nan_match); 11682 11683 void cfg80211_nan_func_terminated(struct wireless_dev *wdev, 11684 u8 inst_id, 11685 enum nl80211_nan_func_term_reason reason, 11686 u64 cookie, gfp_t gfp) 11687 { 11688 struct wiphy *wiphy = wdev->wiphy; 11689 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11690 struct sk_buff *msg; 11691 struct nlattr *func_attr; 11692 void *hdr; 11693 11694 if (WARN_ON(!inst_id)) 11695 return; 11696 11697 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11698 if (!msg) 11699 return; 11700 11701 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION); 11702 if (!hdr) { 11703 nlmsg_free(msg); 11704 return; 11705 } 11706 11707 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11708 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11709 wdev->netdev->ifindex)) || 11710 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 11711 NL80211_ATTR_PAD)) 11712 goto nla_put_failure; 11713 11714 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 11715 NL80211_ATTR_PAD)) 11716 goto nla_put_failure; 11717 11718 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC); 11719 if (!func_attr) 11720 goto nla_put_failure; 11721 11722 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) || 11723 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason)) 11724 goto nla_put_failure; 11725 11726 nla_nest_end(msg, func_attr); 11727 genlmsg_end(msg, hdr); 11728 11729 if (!wdev->owner_nlportid) 11730 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 11731 msg, 0, NL80211_MCGRP_NAN, gfp); 11732 else 11733 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 11734 wdev->owner_nlportid); 11735 11736 return; 11737 11738 nla_put_failure: 11739 nlmsg_free(msg); 11740 } 11741 EXPORT_SYMBOL(cfg80211_nan_func_terminated); 11742 11743 static int nl80211_get_protocol_features(struct sk_buff *skb, 11744 struct genl_info *info) 11745 { 11746 void *hdr; 11747 struct sk_buff *msg; 11748 11749 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11750 if (!msg) 11751 return -ENOMEM; 11752 11753 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11754 NL80211_CMD_GET_PROTOCOL_FEATURES); 11755 if (!hdr) 11756 goto nla_put_failure; 11757 11758 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 11759 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 11760 goto nla_put_failure; 11761 11762 genlmsg_end(msg, hdr); 11763 return genlmsg_reply(msg, info); 11764 11765 nla_put_failure: 11766 kfree_skb(msg); 11767 return -ENOBUFS; 11768 } 11769 11770 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 11771 { 11772 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11773 struct cfg80211_update_ft_ies_params ft_params; 11774 struct net_device *dev = info->user_ptr[1]; 11775 11776 if (!rdev->ops->update_ft_ies) 11777 return -EOPNOTSUPP; 11778 11779 if (!info->attrs[NL80211_ATTR_MDID] || 11780 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 11781 return -EINVAL; 11782 11783 memset(&ft_params, 0, sizeof(ft_params)); 11784 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 11785 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 11786 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 11787 11788 return rdev_update_ft_ies(rdev, dev, &ft_params); 11789 } 11790 11791 static int nl80211_crit_protocol_start(struct sk_buff *skb, 11792 struct genl_info *info) 11793 { 11794 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11795 struct wireless_dev *wdev = info->user_ptr[1]; 11796 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 11797 u16 duration; 11798 int ret; 11799 11800 if (!rdev->ops->crit_proto_start) 11801 return -EOPNOTSUPP; 11802 11803 if (WARN_ON(!rdev->ops->crit_proto_stop)) 11804 return -EINVAL; 11805 11806 if (rdev->crit_proto_nlportid) 11807 return -EBUSY; 11808 11809 /* determine protocol if provided */ 11810 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 11811 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 11812 11813 if (proto >= NUM_NL80211_CRIT_PROTO) 11814 return -EINVAL; 11815 11816 /* timeout must be provided */ 11817 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 11818 return -EINVAL; 11819 11820 duration = 11821 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 11822 11823 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 11824 return -ERANGE; 11825 11826 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 11827 if (!ret) 11828 rdev->crit_proto_nlportid = info->snd_portid; 11829 11830 return ret; 11831 } 11832 11833 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 11834 struct genl_info *info) 11835 { 11836 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11837 struct wireless_dev *wdev = info->user_ptr[1]; 11838 11839 if (!rdev->ops->crit_proto_stop) 11840 return -EOPNOTSUPP; 11841 11842 if (rdev->crit_proto_nlportid) { 11843 rdev->crit_proto_nlportid = 0; 11844 rdev_crit_proto_stop(rdev, wdev); 11845 } 11846 return 0; 11847 } 11848 11849 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 11850 { 11851 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11852 struct wireless_dev *wdev = 11853 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 11854 int i, err; 11855 u32 vid, subcmd; 11856 11857 if (!rdev->wiphy.vendor_commands) 11858 return -EOPNOTSUPP; 11859 11860 if (IS_ERR(wdev)) { 11861 err = PTR_ERR(wdev); 11862 if (err != -EINVAL) 11863 return err; 11864 wdev = NULL; 11865 } else if (wdev->wiphy != &rdev->wiphy) { 11866 return -EINVAL; 11867 } 11868 11869 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 11870 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 11871 return -EINVAL; 11872 11873 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 11874 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 11875 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 11876 const struct wiphy_vendor_command *vcmd; 11877 void *data = NULL; 11878 int len = 0; 11879 11880 vcmd = &rdev->wiphy.vendor_commands[i]; 11881 11882 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 11883 continue; 11884 11885 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 11886 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 11887 if (!wdev) 11888 return -EINVAL; 11889 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 11890 !wdev->netdev) 11891 return -EINVAL; 11892 11893 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 11894 if (!wdev_running(wdev)) 11895 return -ENETDOWN; 11896 } 11897 11898 if (!vcmd->doit) 11899 return -EOPNOTSUPP; 11900 } else { 11901 wdev = NULL; 11902 } 11903 11904 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 11905 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 11906 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 11907 } 11908 11909 rdev->cur_cmd_info = info; 11910 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 11911 data, len); 11912 rdev->cur_cmd_info = NULL; 11913 return err; 11914 } 11915 11916 return -EOPNOTSUPP; 11917 } 11918 11919 static int nl80211_prepare_vendor_dump(struct sk_buff *skb, 11920 struct netlink_callback *cb, 11921 struct cfg80211_registered_device **rdev, 11922 struct wireless_dev **wdev) 11923 { 11924 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 11925 u32 vid, subcmd; 11926 unsigned int i; 11927 int vcmd_idx = -1; 11928 int err; 11929 void *data = NULL; 11930 unsigned int data_len = 0; 11931 11932 if (cb->args[0]) { 11933 /* subtract the 1 again here */ 11934 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 11935 struct wireless_dev *tmp; 11936 11937 if (!wiphy) 11938 return -ENODEV; 11939 *rdev = wiphy_to_rdev(wiphy); 11940 *wdev = NULL; 11941 11942 if (cb->args[1]) { 11943 list_for_each_entry(tmp, &wiphy->wdev_list, list) { 11944 if (tmp->identifier == cb->args[1] - 1) { 11945 *wdev = tmp; 11946 break; 11947 } 11948 } 11949 } 11950 11951 /* keep rtnl locked in successful case */ 11952 return 0; 11953 } 11954 11955 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf, 11956 nl80211_fam.maxattr, nl80211_policy, NULL); 11957 if (err) 11958 return err; 11959 11960 if (!attrbuf[NL80211_ATTR_VENDOR_ID] || 11961 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) 11962 return -EINVAL; 11963 11964 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf); 11965 if (IS_ERR(*wdev)) 11966 *wdev = NULL; 11967 11968 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 11969 if (IS_ERR(*rdev)) 11970 return PTR_ERR(*rdev); 11971 11972 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]); 11973 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]); 11974 11975 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) { 11976 const struct wiphy_vendor_command *vcmd; 11977 11978 vcmd = &(*rdev)->wiphy.vendor_commands[i]; 11979 11980 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 11981 continue; 11982 11983 if (!vcmd->dumpit) 11984 return -EOPNOTSUPP; 11985 11986 vcmd_idx = i; 11987 break; 11988 } 11989 11990 if (vcmd_idx < 0) 11991 return -EOPNOTSUPP; 11992 11993 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) { 11994 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]); 11995 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]); 11996 } 11997 11998 /* 0 is the first index - add 1 to parse only once */ 11999 cb->args[0] = (*rdev)->wiphy_idx + 1; 12000 /* add 1 to know if it was NULL */ 12001 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0; 12002 cb->args[2] = vcmd_idx; 12003 cb->args[3] = (unsigned long)data; 12004 cb->args[4] = data_len; 12005 12006 /* keep rtnl locked in successful case */ 12007 return 0; 12008 } 12009 12010 static int nl80211_vendor_cmd_dump(struct sk_buff *skb, 12011 struct netlink_callback *cb) 12012 { 12013 struct cfg80211_registered_device *rdev; 12014 struct wireless_dev *wdev; 12015 unsigned int vcmd_idx; 12016 const struct wiphy_vendor_command *vcmd; 12017 void *data; 12018 int data_len; 12019 int err; 12020 struct nlattr *vendor_data; 12021 12022 rtnl_lock(); 12023 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev); 12024 if (err) 12025 goto out; 12026 12027 vcmd_idx = cb->args[2]; 12028 data = (void *)cb->args[3]; 12029 data_len = cb->args[4]; 12030 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx]; 12031 12032 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 12033 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 12034 if (!wdev) { 12035 err = -EINVAL; 12036 goto out; 12037 } 12038 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 12039 !wdev->netdev) { 12040 err = -EINVAL; 12041 goto out; 12042 } 12043 12044 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 12045 if (!wdev_running(wdev)) { 12046 err = -ENETDOWN; 12047 goto out; 12048 } 12049 } 12050 } 12051 12052 while (1) { 12053 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 12054 cb->nlh->nlmsg_seq, NLM_F_MULTI, 12055 NL80211_CMD_VENDOR); 12056 if (!hdr) 12057 break; 12058 12059 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12060 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 12061 wdev_id(wdev), 12062 NL80211_ATTR_PAD))) { 12063 genlmsg_cancel(skb, hdr); 12064 break; 12065 } 12066 12067 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA); 12068 if (!vendor_data) { 12069 genlmsg_cancel(skb, hdr); 12070 break; 12071 } 12072 12073 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len, 12074 (unsigned long *)&cb->args[5]); 12075 nla_nest_end(skb, vendor_data); 12076 12077 if (err == -ENOBUFS || err == -ENOENT) { 12078 genlmsg_cancel(skb, hdr); 12079 break; 12080 } else if (err) { 12081 genlmsg_cancel(skb, hdr); 12082 goto out; 12083 } 12084 12085 genlmsg_end(skb, hdr); 12086 } 12087 12088 err = skb->len; 12089 out: 12090 rtnl_unlock(); 12091 return err; 12092 } 12093 12094 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 12095 enum nl80211_commands cmd, 12096 enum nl80211_attrs attr, 12097 int approxlen) 12098 { 12099 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12100 12101 if (WARN_ON(!rdev->cur_cmd_info)) 12102 return NULL; 12103 12104 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 12105 rdev->cur_cmd_info->snd_portid, 12106 rdev->cur_cmd_info->snd_seq, 12107 cmd, attr, NULL, GFP_KERNEL); 12108 } 12109 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 12110 12111 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 12112 { 12113 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 12114 void *hdr = ((void **)skb->cb)[1]; 12115 struct nlattr *data = ((void **)skb->cb)[2]; 12116 12117 /* clear CB data for netlink core to own from now on */ 12118 memset(skb->cb, 0, sizeof(skb->cb)); 12119 12120 if (WARN_ON(!rdev->cur_cmd_info)) { 12121 kfree_skb(skb); 12122 return -EINVAL; 12123 } 12124 12125 nla_nest_end(skb, data); 12126 genlmsg_end(skb, hdr); 12127 return genlmsg_reply(skb, rdev->cur_cmd_info); 12128 } 12129 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 12130 12131 static int nl80211_set_qos_map(struct sk_buff *skb, 12132 struct genl_info *info) 12133 { 12134 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12135 struct cfg80211_qos_map *qos_map = NULL; 12136 struct net_device *dev = info->user_ptr[1]; 12137 u8 *pos, len, num_des, des_len, des; 12138 int ret; 12139 12140 if (!rdev->ops->set_qos_map) 12141 return -EOPNOTSUPP; 12142 12143 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 12144 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 12145 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 12146 12147 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 12148 len > IEEE80211_QOS_MAP_LEN_MAX) 12149 return -EINVAL; 12150 12151 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 12152 if (!qos_map) 12153 return -ENOMEM; 12154 12155 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 12156 if (num_des) { 12157 des_len = num_des * 12158 sizeof(struct cfg80211_dscp_exception); 12159 memcpy(qos_map->dscp_exception, pos, des_len); 12160 qos_map->num_des = num_des; 12161 for (des = 0; des < num_des; des++) { 12162 if (qos_map->dscp_exception[des].up > 7) { 12163 kfree(qos_map); 12164 return -EINVAL; 12165 } 12166 } 12167 pos += des_len; 12168 } 12169 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 12170 } 12171 12172 wdev_lock(dev->ieee80211_ptr); 12173 ret = nl80211_key_allowed(dev->ieee80211_ptr); 12174 if (!ret) 12175 ret = rdev_set_qos_map(rdev, dev, qos_map); 12176 wdev_unlock(dev->ieee80211_ptr); 12177 12178 kfree(qos_map); 12179 return ret; 12180 } 12181 12182 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 12183 { 12184 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12185 struct net_device *dev = info->user_ptr[1]; 12186 struct wireless_dev *wdev = dev->ieee80211_ptr; 12187 const u8 *peer; 12188 u8 tsid, up; 12189 u16 admitted_time = 0; 12190 int err; 12191 12192 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 12193 return -EOPNOTSUPP; 12194 12195 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 12196 !info->attrs[NL80211_ATTR_USER_PRIO]) 12197 return -EINVAL; 12198 12199 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 12200 if (tsid >= IEEE80211_NUM_TIDS) 12201 return -EINVAL; 12202 12203 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 12204 if (up >= IEEE80211_NUM_UPS) 12205 return -EINVAL; 12206 12207 /* WMM uses TIDs 0-7 even for TSPEC */ 12208 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 12209 /* TODO: handle 802.11 TSPEC/admission control 12210 * need more attributes for that (e.g. BA session requirement); 12211 * change the WMM adminssion test above to allow both then 12212 */ 12213 return -EINVAL; 12214 } 12215 12216 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 12217 12218 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 12219 admitted_time = 12220 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 12221 if (!admitted_time) 12222 return -EINVAL; 12223 } 12224 12225 wdev_lock(wdev); 12226 switch (wdev->iftype) { 12227 case NL80211_IFTYPE_STATION: 12228 case NL80211_IFTYPE_P2P_CLIENT: 12229 if (wdev->current_bss) 12230 break; 12231 err = -ENOTCONN; 12232 goto out; 12233 default: 12234 err = -EOPNOTSUPP; 12235 goto out; 12236 } 12237 12238 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 12239 12240 out: 12241 wdev_unlock(wdev); 12242 return err; 12243 } 12244 12245 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 12246 { 12247 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12248 struct net_device *dev = info->user_ptr[1]; 12249 struct wireless_dev *wdev = dev->ieee80211_ptr; 12250 const u8 *peer; 12251 u8 tsid; 12252 int err; 12253 12254 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 12255 return -EINVAL; 12256 12257 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 12258 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 12259 12260 wdev_lock(wdev); 12261 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 12262 wdev_unlock(wdev); 12263 12264 return err; 12265 } 12266 12267 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 12268 struct genl_info *info) 12269 { 12270 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12271 struct net_device *dev = info->user_ptr[1]; 12272 struct wireless_dev *wdev = dev->ieee80211_ptr; 12273 struct cfg80211_chan_def chandef = {}; 12274 const u8 *addr; 12275 u8 oper_class; 12276 int err; 12277 12278 if (!rdev->ops->tdls_channel_switch || 12279 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 12280 return -EOPNOTSUPP; 12281 12282 switch (dev->ieee80211_ptr->iftype) { 12283 case NL80211_IFTYPE_STATION: 12284 case NL80211_IFTYPE_P2P_CLIENT: 12285 break; 12286 default: 12287 return -EOPNOTSUPP; 12288 } 12289 12290 if (!info->attrs[NL80211_ATTR_MAC] || 12291 !info->attrs[NL80211_ATTR_OPER_CLASS]) 12292 return -EINVAL; 12293 12294 err = nl80211_parse_chandef(rdev, info, &chandef); 12295 if (err) 12296 return err; 12297 12298 /* 12299 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 12300 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 12301 * specification is not defined for them. 12302 */ 12303 if (chandef.chan->band == NL80211_BAND_2GHZ && 12304 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 12305 chandef.width != NL80211_CHAN_WIDTH_20) 12306 return -EINVAL; 12307 12308 /* we will be active on the TDLS link */ 12309 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 12310 wdev->iftype)) 12311 return -EINVAL; 12312 12313 /* don't allow switching to DFS channels */ 12314 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 12315 return -EINVAL; 12316 12317 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 12318 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 12319 12320 wdev_lock(wdev); 12321 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 12322 wdev_unlock(wdev); 12323 12324 return err; 12325 } 12326 12327 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 12328 struct genl_info *info) 12329 { 12330 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12331 struct net_device *dev = info->user_ptr[1]; 12332 struct wireless_dev *wdev = dev->ieee80211_ptr; 12333 const u8 *addr; 12334 12335 if (!rdev->ops->tdls_channel_switch || 12336 !rdev->ops->tdls_cancel_channel_switch || 12337 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 12338 return -EOPNOTSUPP; 12339 12340 switch (dev->ieee80211_ptr->iftype) { 12341 case NL80211_IFTYPE_STATION: 12342 case NL80211_IFTYPE_P2P_CLIENT: 12343 break; 12344 default: 12345 return -EOPNOTSUPP; 12346 } 12347 12348 if (!info->attrs[NL80211_ATTR_MAC]) 12349 return -EINVAL; 12350 12351 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 12352 12353 wdev_lock(wdev); 12354 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 12355 wdev_unlock(wdev); 12356 12357 return 0; 12358 } 12359 12360 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb, 12361 struct genl_info *info) 12362 { 12363 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12364 struct net_device *dev = info->user_ptr[1]; 12365 struct wireless_dev *wdev = dev->ieee80211_ptr; 12366 const struct nlattr *nla; 12367 bool enabled; 12368 12369 if (!rdev->ops->set_multicast_to_unicast) 12370 return -EOPNOTSUPP; 12371 12372 if (wdev->iftype != NL80211_IFTYPE_AP && 12373 wdev->iftype != NL80211_IFTYPE_P2P_GO) 12374 return -EOPNOTSUPP; 12375 12376 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED]; 12377 enabled = nla_get_flag(nla); 12378 12379 return rdev_set_multicast_to_unicast(rdev, dev, enabled); 12380 } 12381 12382 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info) 12383 { 12384 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12385 struct net_device *dev = info->user_ptr[1]; 12386 struct wireless_dev *wdev = dev->ieee80211_ptr; 12387 struct cfg80211_pmk_conf pmk_conf = {}; 12388 int ret; 12389 12390 if (wdev->iftype != NL80211_IFTYPE_STATION && 12391 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 12392 return -EOPNOTSUPP; 12393 12394 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12395 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 12396 return -EOPNOTSUPP; 12397 12398 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK]) 12399 return -EINVAL; 12400 12401 wdev_lock(wdev); 12402 if (!wdev->current_bss) { 12403 ret = -ENOTCONN; 12404 goto out; 12405 } 12406 12407 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 12408 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) { 12409 ret = -EINVAL; 12410 goto out; 12411 } 12412 12413 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 12414 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 12415 if (pmk_conf.pmk_len != WLAN_PMK_LEN && 12416 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) { 12417 ret = -EINVAL; 12418 goto out; 12419 } 12420 12421 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) { 12422 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]); 12423 12424 if (r0_name_len != WLAN_PMK_NAME_LEN) { 12425 ret = -EINVAL; 12426 goto out; 12427 } 12428 12429 pmk_conf.pmk_r0_name = 12430 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]); 12431 } 12432 12433 ret = rdev_set_pmk(rdev, dev, &pmk_conf); 12434 out: 12435 wdev_unlock(wdev); 12436 return ret; 12437 } 12438 12439 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info) 12440 { 12441 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12442 struct net_device *dev = info->user_ptr[1]; 12443 struct wireless_dev *wdev = dev->ieee80211_ptr; 12444 const u8 *aa; 12445 int ret; 12446 12447 if (wdev->iftype != NL80211_IFTYPE_STATION && 12448 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 12449 return -EOPNOTSUPP; 12450 12451 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12452 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 12453 return -EOPNOTSUPP; 12454 12455 if (!info->attrs[NL80211_ATTR_MAC]) 12456 return -EINVAL; 12457 12458 wdev_lock(wdev); 12459 aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 12460 ret = rdev_del_pmk(rdev, dev, aa); 12461 wdev_unlock(wdev); 12462 12463 return ret; 12464 } 12465 12466 #define NL80211_FLAG_NEED_WIPHY 0x01 12467 #define NL80211_FLAG_NEED_NETDEV 0x02 12468 #define NL80211_FLAG_NEED_RTNL 0x04 12469 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 12470 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 12471 NL80211_FLAG_CHECK_NETDEV_UP) 12472 #define NL80211_FLAG_NEED_WDEV 0x10 12473 /* If a netdev is associated, it must be UP, P2P must be started */ 12474 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 12475 NL80211_FLAG_CHECK_NETDEV_UP) 12476 #define NL80211_FLAG_CLEAR_SKB 0x20 12477 12478 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 12479 struct genl_info *info) 12480 { 12481 struct cfg80211_registered_device *rdev; 12482 struct wireless_dev *wdev; 12483 struct net_device *dev; 12484 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 12485 12486 if (rtnl) 12487 rtnl_lock(); 12488 12489 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 12490 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 12491 if (IS_ERR(rdev)) { 12492 if (rtnl) 12493 rtnl_unlock(); 12494 return PTR_ERR(rdev); 12495 } 12496 info->user_ptr[0] = rdev; 12497 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 12498 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 12499 ASSERT_RTNL(); 12500 12501 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 12502 info->attrs); 12503 if (IS_ERR(wdev)) { 12504 if (rtnl) 12505 rtnl_unlock(); 12506 return PTR_ERR(wdev); 12507 } 12508 12509 dev = wdev->netdev; 12510 rdev = wiphy_to_rdev(wdev->wiphy); 12511 12512 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 12513 if (!dev) { 12514 if (rtnl) 12515 rtnl_unlock(); 12516 return -EINVAL; 12517 } 12518 12519 info->user_ptr[1] = dev; 12520 } else { 12521 info->user_ptr[1] = wdev; 12522 } 12523 12524 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 12525 !wdev_running(wdev)) { 12526 if (rtnl) 12527 rtnl_unlock(); 12528 return -ENETDOWN; 12529 } 12530 12531 if (dev) 12532 dev_hold(dev); 12533 12534 info->user_ptr[0] = rdev; 12535 } 12536 12537 return 0; 12538 } 12539 12540 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 12541 struct genl_info *info) 12542 { 12543 if (info->user_ptr[1]) { 12544 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 12545 struct wireless_dev *wdev = info->user_ptr[1]; 12546 12547 if (wdev->netdev) 12548 dev_put(wdev->netdev); 12549 } else { 12550 dev_put(info->user_ptr[1]); 12551 } 12552 } 12553 12554 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 12555 rtnl_unlock(); 12556 12557 /* If needed, clear the netlink message payload from the SKB 12558 * as it might contain key data that shouldn't stick around on 12559 * the heap after the SKB is freed. The netlink message header 12560 * is still needed for further processing, so leave it intact. 12561 */ 12562 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 12563 struct nlmsghdr *nlh = nlmsg_hdr(skb); 12564 12565 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 12566 } 12567 } 12568 12569 static const struct genl_ops nl80211_ops[] = { 12570 { 12571 .cmd = NL80211_CMD_GET_WIPHY, 12572 .doit = nl80211_get_wiphy, 12573 .dumpit = nl80211_dump_wiphy, 12574 .done = nl80211_dump_wiphy_done, 12575 .policy = nl80211_policy, 12576 /* can be retrieved by unprivileged users */ 12577 .internal_flags = NL80211_FLAG_NEED_WIPHY | 12578 NL80211_FLAG_NEED_RTNL, 12579 }, 12580 { 12581 .cmd = NL80211_CMD_SET_WIPHY, 12582 .doit = nl80211_set_wiphy, 12583 .policy = nl80211_policy, 12584 .flags = GENL_UNS_ADMIN_PERM, 12585 .internal_flags = NL80211_FLAG_NEED_RTNL, 12586 }, 12587 { 12588 .cmd = NL80211_CMD_GET_INTERFACE, 12589 .doit = nl80211_get_interface, 12590 .dumpit = nl80211_dump_interface, 12591 .policy = nl80211_policy, 12592 /* can be retrieved by unprivileged users */ 12593 .internal_flags = NL80211_FLAG_NEED_WDEV | 12594 NL80211_FLAG_NEED_RTNL, 12595 }, 12596 { 12597 .cmd = NL80211_CMD_SET_INTERFACE, 12598 .doit = nl80211_set_interface, 12599 .policy = nl80211_policy, 12600 .flags = GENL_UNS_ADMIN_PERM, 12601 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12602 NL80211_FLAG_NEED_RTNL, 12603 }, 12604 { 12605 .cmd = NL80211_CMD_NEW_INTERFACE, 12606 .doit = nl80211_new_interface, 12607 .policy = nl80211_policy, 12608 .flags = GENL_UNS_ADMIN_PERM, 12609 .internal_flags = NL80211_FLAG_NEED_WIPHY | 12610 NL80211_FLAG_NEED_RTNL, 12611 }, 12612 { 12613 .cmd = NL80211_CMD_DEL_INTERFACE, 12614 .doit = nl80211_del_interface, 12615 .policy = nl80211_policy, 12616 .flags = GENL_UNS_ADMIN_PERM, 12617 .internal_flags = NL80211_FLAG_NEED_WDEV | 12618 NL80211_FLAG_NEED_RTNL, 12619 }, 12620 { 12621 .cmd = NL80211_CMD_GET_KEY, 12622 .doit = nl80211_get_key, 12623 .policy = nl80211_policy, 12624 .flags = GENL_UNS_ADMIN_PERM, 12625 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12626 NL80211_FLAG_NEED_RTNL, 12627 }, 12628 { 12629 .cmd = NL80211_CMD_SET_KEY, 12630 .doit = nl80211_set_key, 12631 .policy = nl80211_policy, 12632 .flags = GENL_UNS_ADMIN_PERM, 12633 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12634 NL80211_FLAG_NEED_RTNL | 12635 NL80211_FLAG_CLEAR_SKB, 12636 }, 12637 { 12638 .cmd = NL80211_CMD_NEW_KEY, 12639 .doit = nl80211_new_key, 12640 .policy = nl80211_policy, 12641 .flags = GENL_UNS_ADMIN_PERM, 12642 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12643 NL80211_FLAG_NEED_RTNL | 12644 NL80211_FLAG_CLEAR_SKB, 12645 }, 12646 { 12647 .cmd = NL80211_CMD_DEL_KEY, 12648 .doit = nl80211_del_key, 12649 .policy = nl80211_policy, 12650 .flags = GENL_UNS_ADMIN_PERM, 12651 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12652 NL80211_FLAG_NEED_RTNL, 12653 }, 12654 { 12655 .cmd = NL80211_CMD_SET_BEACON, 12656 .policy = nl80211_policy, 12657 .flags = GENL_UNS_ADMIN_PERM, 12658 .doit = nl80211_set_beacon, 12659 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12660 NL80211_FLAG_NEED_RTNL, 12661 }, 12662 { 12663 .cmd = NL80211_CMD_START_AP, 12664 .policy = nl80211_policy, 12665 .flags = GENL_UNS_ADMIN_PERM, 12666 .doit = nl80211_start_ap, 12667 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12668 NL80211_FLAG_NEED_RTNL, 12669 }, 12670 { 12671 .cmd = NL80211_CMD_STOP_AP, 12672 .policy = nl80211_policy, 12673 .flags = GENL_UNS_ADMIN_PERM, 12674 .doit = nl80211_stop_ap, 12675 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12676 NL80211_FLAG_NEED_RTNL, 12677 }, 12678 { 12679 .cmd = NL80211_CMD_GET_STATION, 12680 .doit = nl80211_get_station, 12681 .dumpit = nl80211_dump_station, 12682 .policy = nl80211_policy, 12683 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12684 NL80211_FLAG_NEED_RTNL, 12685 }, 12686 { 12687 .cmd = NL80211_CMD_SET_STATION, 12688 .doit = nl80211_set_station, 12689 .policy = nl80211_policy, 12690 .flags = GENL_UNS_ADMIN_PERM, 12691 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12692 NL80211_FLAG_NEED_RTNL, 12693 }, 12694 { 12695 .cmd = NL80211_CMD_NEW_STATION, 12696 .doit = nl80211_new_station, 12697 .policy = nl80211_policy, 12698 .flags = GENL_UNS_ADMIN_PERM, 12699 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12700 NL80211_FLAG_NEED_RTNL, 12701 }, 12702 { 12703 .cmd = NL80211_CMD_DEL_STATION, 12704 .doit = nl80211_del_station, 12705 .policy = nl80211_policy, 12706 .flags = GENL_UNS_ADMIN_PERM, 12707 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12708 NL80211_FLAG_NEED_RTNL, 12709 }, 12710 { 12711 .cmd = NL80211_CMD_GET_MPATH, 12712 .doit = nl80211_get_mpath, 12713 .dumpit = nl80211_dump_mpath, 12714 .policy = nl80211_policy, 12715 .flags = GENL_UNS_ADMIN_PERM, 12716 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12717 NL80211_FLAG_NEED_RTNL, 12718 }, 12719 { 12720 .cmd = NL80211_CMD_GET_MPP, 12721 .doit = nl80211_get_mpp, 12722 .dumpit = nl80211_dump_mpp, 12723 .policy = nl80211_policy, 12724 .flags = GENL_UNS_ADMIN_PERM, 12725 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12726 NL80211_FLAG_NEED_RTNL, 12727 }, 12728 { 12729 .cmd = NL80211_CMD_SET_MPATH, 12730 .doit = nl80211_set_mpath, 12731 .policy = nl80211_policy, 12732 .flags = GENL_UNS_ADMIN_PERM, 12733 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12734 NL80211_FLAG_NEED_RTNL, 12735 }, 12736 { 12737 .cmd = NL80211_CMD_NEW_MPATH, 12738 .doit = nl80211_new_mpath, 12739 .policy = nl80211_policy, 12740 .flags = GENL_UNS_ADMIN_PERM, 12741 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12742 NL80211_FLAG_NEED_RTNL, 12743 }, 12744 { 12745 .cmd = NL80211_CMD_DEL_MPATH, 12746 .doit = nl80211_del_mpath, 12747 .policy = nl80211_policy, 12748 .flags = GENL_UNS_ADMIN_PERM, 12749 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12750 NL80211_FLAG_NEED_RTNL, 12751 }, 12752 { 12753 .cmd = NL80211_CMD_SET_BSS, 12754 .doit = nl80211_set_bss, 12755 .policy = nl80211_policy, 12756 .flags = GENL_UNS_ADMIN_PERM, 12757 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12758 NL80211_FLAG_NEED_RTNL, 12759 }, 12760 { 12761 .cmd = NL80211_CMD_GET_REG, 12762 .doit = nl80211_get_reg_do, 12763 .dumpit = nl80211_get_reg_dump, 12764 .policy = nl80211_policy, 12765 .internal_flags = NL80211_FLAG_NEED_RTNL, 12766 /* can be retrieved by unprivileged users */ 12767 }, 12768 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 12769 { 12770 .cmd = NL80211_CMD_SET_REG, 12771 .doit = nl80211_set_reg, 12772 .policy = nl80211_policy, 12773 .flags = GENL_ADMIN_PERM, 12774 .internal_flags = NL80211_FLAG_NEED_RTNL, 12775 }, 12776 #endif 12777 { 12778 .cmd = NL80211_CMD_REQ_SET_REG, 12779 .doit = nl80211_req_set_reg, 12780 .policy = nl80211_policy, 12781 .flags = GENL_ADMIN_PERM, 12782 }, 12783 { 12784 .cmd = NL80211_CMD_RELOAD_REGDB, 12785 .doit = nl80211_reload_regdb, 12786 .policy = nl80211_policy, 12787 .flags = GENL_ADMIN_PERM, 12788 }, 12789 { 12790 .cmd = NL80211_CMD_GET_MESH_CONFIG, 12791 .doit = nl80211_get_mesh_config, 12792 .policy = nl80211_policy, 12793 /* can be retrieved by unprivileged users */ 12794 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12795 NL80211_FLAG_NEED_RTNL, 12796 }, 12797 { 12798 .cmd = NL80211_CMD_SET_MESH_CONFIG, 12799 .doit = nl80211_update_mesh_config, 12800 .policy = nl80211_policy, 12801 .flags = GENL_UNS_ADMIN_PERM, 12802 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12803 NL80211_FLAG_NEED_RTNL, 12804 }, 12805 { 12806 .cmd = NL80211_CMD_TRIGGER_SCAN, 12807 .doit = nl80211_trigger_scan, 12808 .policy = nl80211_policy, 12809 .flags = GENL_UNS_ADMIN_PERM, 12810 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 12811 NL80211_FLAG_NEED_RTNL, 12812 }, 12813 { 12814 .cmd = NL80211_CMD_ABORT_SCAN, 12815 .doit = nl80211_abort_scan, 12816 .policy = nl80211_policy, 12817 .flags = GENL_UNS_ADMIN_PERM, 12818 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 12819 NL80211_FLAG_NEED_RTNL, 12820 }, 12821 { 12822 .cmd = NL80211_CMD_GET_SCAN, 12823 .policy = nl80211_policy, 12824 .dumpit = nl80211_dump_scan, 12825 }, 12826 { 12827 .cmd = NL80211_CMD_START_SCHED_SCAN, 12828 .doit = nl80211_start_sched_scan, 12829 .policy = nl80211_policy, 12830 .flags = GENL_UNS_ADMIN_PERM, 12831 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12832 NL80211_FLAG_NEED_RTNL, 12833 }, 12834 { 12835 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 12836 .doit = nl80211_stop_sched_scan, 12837 .policy = nl80211_policy, 12838 .flags = GENL_UNS_ADMIN_PERM, 12839 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12840 NL80211_FLAG_NEED_RTNL, 12841 }, 12842 { 12843 .cmd = NL80211_CMD_AUTHENTICATE, 12844 .doit = nl80211_authenticate, 12845 .policy = nl80211_policy, 12846 .flags = GENL_UNS_ADMIN_PERM, 12847 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12848 NL80211_FLAG_NEED_RTNL | 12849 NL80211_FLAG_CLEAR_SKB, 12850 }, 12851 { 12852 .cmd = NL80211_CMD_ASSOCIATE, 12853 .doit = nl80211_associate, 12854 .policy = nl80211_policy, 12855 .flags = GENL_UNS_ADMIN_PERM, 12856 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12857 NL80211_FLAG_NEED_RTNL, 12858 }, 12859 { 12860 .cmd = NL80211_CMD_DEAUTHENTICATE, 12861 .doit = nl80211_deauthenticate, 12862 .policy = nl80211_policy, 12863 .flags = GENL_UNS_ADMIN_PERM, 12864 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12865 NL80211_FLAG_NEED_RTNL, 12866 }, 12867 { 12868 .cmd = NL80211_CMD_DISASSOCIATE, 12869 .doit = nl80211_disassociate, 12870 .policy = nl80211_policy, 12871 .flags = GENL_UNS_ADMIN_PERM, 12872 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12873 NL80211_FLAG_NEED_RTNL, 12874 }, 12875 { 12876 .cmd = NL80211_CMD_JOIN_IBSS, 12877 .doit = nl80211_join_ibss, 12878 .policy = nl80211_policy, 12879 .flags = GENL_UNS_ADMIN_PERM, 12880 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12881 NL80211_FLAG_NEED_RTNL, 12882 }, 12883 { 12884 .cmd = NL80211_CMD_LEAVE_IBSS, 12885 .doit = nl80211_leave_ibss, 12886 .policy = nl80211_policy, 12887 .flags = GENL_UNS_ADMIN_PERM, 12888 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12889 NL80211_FLAG_NEED_RTNL, 12890 }, 12891 #ifdef CONFIG_NL80211_TESTMODE 12892 { 12893 .cmd = NL80211_CMD_TESTMODE, 12894 .doit = nl80211_testmode_do, 12895 .dumpit = nl80211_testmode_dump, 12896 .policy = nl80211_policy, 12897 .flags = GENL_UNS_ADMIN_PERM, 12898 .internal_flags = NL80211_FLAG_NEED_WIPHY | 12899 NL80211_FLAG_NEED_RTNL, 12900 }, 12901 #endif 12902 { 12903 .cmd = NL80211_CMD_CONNECT, 12904 .doit = nl80211_connect, 12905 .policy = nl80211_policy, 12906 .flags = GENL_UNS_ADMIN_PERM, 12907 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12908 NL80211_FLAG_NEED_RTNL, 12909 }, 12910 { 12911 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS, 12912 .doit = nl80211_update_connect_params, 12913 .policy = nl80211_policy, 12914 .flags = GENL_ADMIN_PERM, 12915 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12916 NL80211_FLAG_NEED_RTNL, 12917 }, 12918 { 12919 .cmd = NL80211_CMD_DISCONNECT, 12920 .doit = nl80211_disconnect, 12921 .policy = nl80211_policy, 12922 .flags = GENL_UNS_ADMIN_PERM, 12923 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12924 NL80211_FLAG_NEED_RTNL, 12925 }, 12926 { 12927 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 12928 .doit = nl80211_wiphy_netns, 12929 .policy = nl80211_policy, 12930 .flags = GENL_UNS_ADMIN_PERM, 12931 .internal_flags = NL80211_FLAG_NEED_WIPHY | 12932 NL80211_FLAG_NEED_RTNL, 12933 }, 12934 { 12935 .cmd = NL80211_CMD_GET_SURVEY, 12936 .policy = nl80211_policy, 12937 .dumpit = nl80211_dump_survey, 12938 }, 12939 { 12940 .cmd = NL80211_CMD_SET_PMKSA, 12941 .doit = nl80211_setdel_pmksa, 12942 .policy = nl80211_policy, 12943 .flags = GENL_UNS_ADMIN_PERM, 12944 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12945 NL80211_FLAG_NEED_RTNL, 12946 }, 12947 { 12948 .cmd = NL80211_CMD_DEL_PMKSA, 12949 .doit = nl80211_setdel_pmksa, 12950 .policy = nl80211_policy, 12951 .flags = GENL_UNS_ADMIN_PERM, 12952 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12953 NL80211_FLAG_NEED_RTNL, 12954 }, 12955 { 12956 .cmd = NL80211_CMD_FLUSH_PMKSA, 12957 .doit = nl80211_flush_pmksa, 12958 .policy = nl80211_policy, 12959 .flags = GENL_UNS_ADMIN_PERM, 12960 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12961 NL80211_FLAG_NEED_RTNL, 12962 }, 12963 { 12964 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 12965 .doit = nl80211_remain_on_channel, 12966 .policy = nl80211_policy, 12967 .flags = GENL_UNS_ADMIN_PERM, 12968 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 12969 NL80211_FLAG_NEED_RTNL, 12970 }, 12971 { 12972 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 12973 .doit = nl80211_cancel_remain_on_channel, 12974 .policy = nl80211_policy, 12975 .flags = GENL_UNS_ADMIN_PERM, 12976 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 12977 NL80211_FLAG_NEED_RTNL, 12978 }, 12979 { 12980 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 12981 .doit = nl80211_set_tx_bitrate_mask, 12982 .policy = nl80211_policy, 12983 .flags = GENL_UNS_ADMIN_PERM, 12984 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12985 NL80211_FLAG_NEED_RTNL, 12986 }, 12987 { 12988 .cmd = NL80211_CMD_REGISTER_FRAME, 12989 .doit = nl80211_register_mgmt, 12990 .policy = nl80211_policy, 12991 .flags = GENL_UNS_ADMIN_PERM, 12992 .internal_flags = NL80211_FLAG_NEED_WDEV | 12993 NL80211_FLAG_NEED_RTNL, 12994 }, 12995 { 12996 .cmd = NL80211_CMD_FRAME, 12997 .doit = nl80211_tx_mgmt, 12998 .policy = nl80211_policy, 12999 .flags = GENL_UNS_ADMIN_PERM, 13000 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13001 NL80211_FLAG_NEED_RTNL, 13002 }, 13003 { 13004 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 13005 .doit = nl80211_tx_mgmt_cancel_wait, 13006 .policy = nl80211_policy, 13007 .flags = GENL_UNS_ADMIN_PERM, 13008 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13009 NL80211_FLAG_NEED_RTNL, 13010 }, 13011 { 13012 .cmd = NL80211_CMD_SET_POWER_SAVE, 13013 .doit = nl80211_set_power_save, 13014 .policy = nl80211_policy, 13015 .flags = GENL_UNS_ADMIN_PERM, 13016 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13017 NL80211_FLAG_NEED_RTNL, 13018 }, 13019 { 13020 .cmd = NL80211_CMD_GET_POWER_SAVE, 13021 .doit = nl80211_get_power_save, 13022 .policy = nl80211_policy, 13023 /* can be retrieved by unprivileged users */ 13024 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13025 NL80211_FLAG_NEED_RTNL, 13026 }, 13027 { 13028 .cmd = NL80211_CMD_SET_CQM, 13029 .doit = nl80211_set_cqm, 13030 .policy = nl80211_policy, 13031 .flags = GENL_UNS_ADMIN_PERM, 13032 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13033 NL80211_FLAG_NEED_RTNL, 13034 }, 13035 { 13036 .cmd = NL80211_CMD_SET_CHANNEL, 13037 .doit = nl80211_set_channel, 13038 .policy = nl80211_policy, 13039 .flags = GENL_UNS_ADMIN_PERM, 13040 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13041 NL80211_FLAG_NEED_RTNL, 13042 }, 13043 { 13044 .cmd = NL80211_CMD_SET_WDS_PEER, 13045 .doit = nl80211_set_wds_peer, 13046 .policy = nl80211_policy, 13047 .flags = GENL_UNS_ADMIN_PERM, 13048 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13049 NL80211_FLAG_NEED_RTNL, 13050 }, 13051 { 13052 .cmd = NL80211_CMD_JOIN_MESH, 13053 .doit = nl80211_join_mesh, 13054 .policy = nl80211_policy, 13055 .flags = GENL_UNS_ADMIN_PERM, 13056 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13057 NL80211_FLAG_NEED_RTNL, 13058 }, 13059 { 13060 .cmd = NL80211_CMD_LEAVE_MESH, 13061 .doit = nl80211_leave_mesh, 13062 .policy = nl80211_policy, 13063 .flags = GENL_UNS_ADMIN_PERM, 13064 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13065 NL80211_FLAG_NEED_RTNL, 13066 }, 13067 { 13068 .cmd = NL80211_CMD_JOIN_OCB, 13069 .doit = nl80211_join_ocb, 13070 .policy = nl80211_policy, 13071 .flags = GENL_UNS_ADMIN_PERM, 13072 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13073 NL80211_FLAG_NEED_RTNL, 13074 }, 13075 { 13076 .cmd = NL80211_CMD_LEAVE_OCB, 13077 .doit = nl80211_leave_ocb, 13078 .policy = nl80211_policy, 13079 .flags = GENL_UNS_ADMIN_PERM, 13080 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13081 NL80211_FLAG_NEED_RTNL, 13082 }, 13083 #ifdef CONFIG_PM 13084 { 13085 .cmd = NL80211_CMD_GET_WOWLAN, 13086 .doit = nl80211_get_wowlan, 13087 .policy = nl80211_policy, 13088 /* can be retrieved by unprivileged users */ 13089 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13090 NL80211_FLAG_NEED_RTNL, 13091 }, 13092 { 13093 .cmd = NL80211_CMD_SET_WOWLAN, 13094 .doit = nl80211_set_wowlan, 13095 .policy = nl80211_policy, 13096 .flags = GENL_UNS_ADMIN_PERM, 13097 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13098 NL80211_FLAG_NEED_RTNL, 13099 }, 13100 #endif 13101 { 13102 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 13103 .doit = nl80211_set_rekey_data, 13104 .policy = nl80211_policy, 13105 .flags = GENL_UNS_ADMIN_PERM, 13106 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13107 NL80211_FLAG_NEED_RTNL | 13108 NL80211_FLAG_CLEAR_SKB, 13109 }, 13110 { 13111 .cmd = NL80211_CMD_TDLS_MGMT, 13112 .doit = nl80211_tdls_mgmt, 13113 .policy = nl80211_policy, 13114 .flags = GENL_UNS_ADMIN_PERM, 13115 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13116 NL80211_FLAG_NEED_RTNL, 13117 }, 13118 { 13119 .cmd = NL80211_CMD_TDLS_OPER, 13120 .doit = nl80211_tdls_oper, 13121 .policy = nl80211_policy, 13122 .flags = GENL_UNS_ADMIN_PERM, 13123 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13124 NL80211_FLAG_NEED_RTNL, 13125 }, 13126 { 13127 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 13128 .doit = nl80211_register_unexpected_frame, 13129 .policy = nl80211_policy, 13130 .flags = GENL_UNS_ADMIN_PERM, 13131 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13132 NL80211_FLAG_NEED_RTNL, 13133 }, 13134 { 13135 .cmd = NL80211_CMD_PROBE_CLIENT, 13136 .doit = nl80211_probe_client, 13137 .policy = nl80211_policy, 13138 .flags = GENL_UNS_ADMIN_PERM, 13139 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13140 NL80211_FLAG_NEED_RTNL, 13141 }, 13142 { 13143 .cmd = NL80211_CMD_REGISTER_BEACONS, 13144 .doit = nl80211_register_beacons, 13145 .policy = nl80211_policy, 13146 .flags = GENL_UNS_ADMIN_PERM, 13147 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13148 NL80211_FLAG_NEED_RTNL, 13149 }, 13150 { 13151 .cmd = NL80211_CMD_SET_NOACK_MAP, 13152 .doit = nl80211_set_noack_map, 13153 .policy = nl80211_policy, 13154 .flags = GENL_UNS_ADMIN_PERM, 13155 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13156 NL80211_FLAG_NEED_RTNL, 13157 }, 13158 { 13159 .cmd = NL80211_CMD_START_P2P_DEVICE, 13160 .doit = nl80211_start_p2p_device, 13161 .policy = nl80211_policy, 13162 .flags = GENL_UNS_ADMIN_PERM, 13163 .internal_flags = NL80211_FLAG_NEED_WDEV | 13164 NL80211_FLAG_NEED_RTNL, 13165 }, 13166 { 13167 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 13168 .doit = nl80211_stop_p2p_device, 13169 .policy = nl80211_policy, 13170 .flags = GENL_UNS_ADMIN_PERM, 13171 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13172 NL80211_FLAG_NEED_RTNL, 13173 }, 13174 { 13175 .cmd = NL80211_CMD_START_NAN, 13176 .doit = nl80211_start_nan, 13177 .policy = nl80211_policy, 13178 .flags = GENL_ADMIN_PERM, 13179 .internal_flags = NL80211_FLAG_NEED_WDEV | 13180 NL80211_FLAG_NEED_RTNL, 13181 }, 13182 { 13183 .cmd = NL80211_CMD_STOP_NAN, 13184 .doit = nl80211_stop_nan, 13185 .policy = nl80211_policy, 13186 .flags = GENL_ADMIN_PERM, 13187 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13188 NL80211_FLAG_NEED_RTNL, 13189 }, 13190 { 13191 .cmd = NL80211_CMD_ADD_NAN_FUNCTION, 13192 .doit = nl80211_nan_add_func, 13193 .policy = nl80211_policy, 13194 .flags = GENL_ADMIN_PERM, 13195 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13196 NL80211_FLAG_NEED_RTNL, 13197 }, 13198 { 13199 .cmd = NL80211_CMD_DEL_NAN_FUNCTION, 13200 .doit = nl80211_nan_del_func, 13201 .policy = nl80211_policy, 13202 .flags = GENL_ADMIN_PERM, 13203 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13204 NL80211_FLAG_NEED_RTNL, 13205 }, 13206 { 13207 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG, 13208 .doit = nl80211_nan_change_config, 13209 .policy = nl80211_policy, 13210 .flags = GENL_ADMIN_PERM, 13211 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13212 NL80211_FLAG_NEED_RTNL, 13213 }, 13214 { 13215 .cmd = NL80211_CMD_SET_MCAST_RATE, 13216 .doit = nl80211_set_mcast_rate, 13217 .policy = nl80211_policy, 13218 .flags = GENL_UNS_ADMIN_PERM, 13219 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13220 NL80211_FLAG_NEED_RTNL, 13221 }, 13222 { 13223 .cmd = NL80211_CMD_SET_MAC_ACL, 13224 .doit = nl80211_set_mac_acl, 13225 .policy = nl80211_policy, 13226 .flags = GENL_UNS_ADMIN_PERM, 13227 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13228 NL80211_FLAG_NEED_RTNL, 13229 }, 13230 { 13231 .cmd = NL80211_CMD_RADAR_DETECT, 13232 .doit = nl80211_start_radar_detection, 13233 .policy = nl80211_policy, 13234 .flags = GENL_UNS_ADMIN_PERM, 13235 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13236 NL80211_FLAG_NEED_RTNL, 13237 }, 13238 { 13239 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 13240 .doit = nl80211_get_protocol_features, 13241 .policy = nl80211_policy, 13242 }, 13243 { 13244 .cmd = NL80211_CMD_UPDATE_FT_IES, 13245 .doit = nl80211_update_ft_ies, 13246 .policy = nl80211_policy, 13247 .flags = GENL_UNS_ADMIN_PERM, 13248 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13249 NL80211_FLAG_NEED_RTNL, 13250 }, 13251 { 13252 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 13253 .doit = nl80211_crit_protocol_start, 13254 .policy = nl80211_policy, 13255 .flags = GENL_UNS_ADMIN_PERM, 13256 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13257 NL80211_FLAG_NEED_RTNL, 13258 }, 13259 { 13260 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 13261 .doit = nl80211_crit_protocol_stop, 13262 .policy = nl80211_policy, 13263 .flags = GENL_UNS_ADMIN_PERM, 13264 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13265 NL80211_FLAG_NEED_RTNL, 13266 }, 13267 { 13268 .cmd = NL80211_CMD_GET_COALESCE, 13269 .doit = nl80211_get_coalesce, 13270 .policy = nl80211_policy, 13271 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13272 NL80211_FLAG_NEED_RTNL, 13273 }, 13274 { 13275 .cmd = NL80211_CMD_SET_COALESCE, 13276 .doit = nl80211_set_coalesce, 13277 .policy = nl80211_policy, 13278 .flags = GENL_UNS_ADMIN_PERM, 13279 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13280 NL80211_FLAG_NEED_RTNL, 13281 }, 13282 { 13283 .cmd = NL80211_CMD_CHANNEL_SWITCH, 13284 .doit = nl80211_channel_switch, 13285 .policy = nl80211_policy, 13286 .flags = GENL_UNS_ADMIN_PERM, 13287 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13288 NL80211_FLAG_NEED_RTNL, 13289 }, 13290 { 13291 .cmd = NL80211_CMD_VENDOR, 13292 .doit = nl80211_vendor_cmd, 13293 .dumpit = nl80211_vendor_cmd_dump, 13294 .policy = nl80211_policy, 13295 .flags = GENL_UNS_ADMIN_PERM, 13296 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13297 NL80211_FLAG_NEED_RTNL, 13298 }, 13299 { 13300 .cmd = NL80211_CMD_SET_QOS_MAP, 13301 .doit = nl80211_set_qos_map, 13302 .policy = nl80211_policy, 13303 .flags = GENL_UNS_ADMIN_PERM, 13304 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13305 NL80211_FLAG_NEED_RTNL, 13306 }, 13307 { 13308 .cmd = NL80211_CMD_ADD_TX_TS, 13309 .doit = nl80211_add_tx_ts, 13310 .policy = nl80211_policy, 13311 .flags = GENL_UNS_ADMIN_PERM, 13312 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13313 NL80211_FLAG_NEED_RTNL, 13314 }, 13315 { 13316 .cmd = NL80211_CMD_DEL_TX_TS, 13317 .doit = nl80211_del_tx_ts, 13318 .policy = nl80211_policy, 13319 .flags = GENL_UNS_ADMIN_PERM, 13320 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13321 NL80211_FLAG_NEED_RTNL, 13322 }, 13323 { 13324 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 13325 .doit = nl80211_tdls_channel_switch, 13326 .policy = nl80211_policy, 13327 .flags = GENL_UNS_ADMIN_PERM, 13328 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13329 NL80211_FLAG_NEED_RTNL, 13330 }, 13331 { 13332 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 13333 .doit = nl80211_tdls_cancel_channel_switch, 13334 .policy = nl80211_policy, 13335 .flags = GENL_UNS_ADMIN_PERM, 13336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13337 NL80211_FLAG_NEED_RTNL, 13338 }, 13339 { 13340 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST, 13341 .doit = nl80211_set_multicast_to_unicast, 13342 .policy = nl80211_policy, 13343 .flags = GENL_UNS_ADMIN_PERM, 13344 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13345 NL80211_FLAG_NEED_RTNL, 13346 }, 13347 { 13348 .cmd = NL80211_CMD_SET_PMK, 13349 .doit = nl80211_set_pmk, 13350 .policy = nl80211_policy, 13351 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13352 NL80211_FLAG_NEED_RTNL, 13353 }, 13354 { 13355 .cmd = NL80211_CMD_DEL_PMK, 13356 .doit = nl80211_del_pmk, 13357 .policy = nl80211_policy, 13358 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13359 NL80211_FLAG_NEED_RTNL, 13360 }, 13361 13362 }; 13363 13364 static struct genl_family nl80211_fam __ro_after_init = { 13365 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 13366 .hdrsize = 0, /* no private header */ 13367 .version = 1, /* no particular meaning now */ 13368 .maxattr = NL80211_ATTR_MAX, 13369 .netnsok = true, 13370 .pre_doit = nl80211_pre_doit, 13371 .post_doit = nl80211_post_doit, 13372 .module = THIS_MODULE, 13373 .ops = nl80211_ops, 13374 .n_ops = ARRAY_SIZE(nl80211_ops), 13375 .mcgrps = nl80211_mcgrps, 13376 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps), 13377 }; 13378 13379 /* notification functions */ 13380 13381 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 13382 enum nl80211_commands cmd) 13383 { 13384 struct sk_buff *msg; 13385 struct nl80211_dump_wiphy_state state = {}; 13386 13387 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 13388 cmd != NL80211_CMD_DEL_WIPHY); 13389 13390 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13391 if (!msg) 13392 return; 13393 13394 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 13395 nlmsg_free(msg); 13396 return; 13397 } 13398 13399 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13400 NL80211_MCGRP_CONFIG, GFP_KERNEL); 13401 } 13402 13403 void nl80211_notify_iface(struct cfg80211_registered_device *rdev, 13404 struct wireless_dev *wdev, 13405 enum nl80211_commands cmd) 13406 { 13407 struct sk_buff *msg; 13408 13409 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE && 13410 cmd != NL80211_CMD_DEL_INTERFACE); 13411 13412 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13413 if (!msg) 13414 return; 13415 13416 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, 13417 cmd == NL80211_CMD_DEL_INTERFACE) < 0) { 13418 nlmsg_free(msg); 13419 return; 13420 } 13421 13422 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13423 NL80211_MCGRP_CONFIG, GFP_KERNEL); 13424 } 13425 13426 static int nl80211_add_scan_req(struct sk_buff *msg, 13427 struct cfg80211_registered_device *rdev) 13428 { 13429 struct cfg80211_scan_request *req = rdev->scan_req; 13430 struct nlattr *nest; 13431 int i; 13432 13433 if (WARN_ON(!req)) 13434 return 0; 13435 13436 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 13437 if (!nest) 13438 goto nla_put_failure; 13439 for (i = 0; i < req->n_ssids; i++) { 13440 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 13441 goto nla_put_failure; 13442 } 13443 nla_nest_end(msg, nest); 13444 13445 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 13446 if (!nest) 13447 goto nla_put_failure; 13448 for (i = 0; i < req->n_channels; i++) { 13449 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 13450 goto nla_put_failure; 13451 } 13452 nla_nest_end(msg, nest); 13453 13454 if (req->ie && 13455 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 13456 goto nla_put_failure; 13457 13458 if (req->flags && 13459 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 13460 goto nla_put_failure; 13461 13462 if (req->info.scan_start_tsf && 13463 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF, 13464 req->info.scan_start_tsf, NL80211_BSS_PAD) || 13465 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN, 13466 req->info.tsf_bssid))) 13467 goto nla_put_failure; 13468 13469 return 0; 13470 nla_put_failure: 13471 return -ENOBUFS; 13472 } 13473 13474 static int nl80211_prep_scan_msg(struct sk_buff *msg, 13475 struct cfg80211_registered_device *rdev, 13476 struct wireless_dev *wdev, 13477 u32 portid, u32 seq, int flags, 13478 u32 cmd) 13479 { 13480 void *hdr; 13481 13482 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 13483 if (!hdr) 13484 return -1; 13485 13486 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13487 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 13488 wdev->netdev->ifindex)) || 13489 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13490 NL80211_ATTR_PAD)) 13491 goto nla_put_failure; 13492 13493 /* ignore errors and send incomplete event anyway */ 13494 nl80211_add_scan_req(msg, rdev); 13495 13496 genlmsg_end(msg, hdr); 13497 return 0; 13498 13499 nla_put_failure: 13500 genlmsg_cancel(msg, hdr); 13501 return -EMSGSIZE; 13502 } 13503 13504 static int 13505 nl80211_prep_sched_scan_msg(struct sk_buff *msg, 13506 struct cfg80211_sched_scan_request *req, u32 cmd) 13507 { 13508 void *hdr; 13509 13510 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 13511 if (!hdr) 13512 return -1; 13513 13514 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, 13515 wiphy_to_rdev(req->wiphy)->wiphy_idx) || 13516 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) || 13517 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid, 13518 NL80211_ATTR_PAD)) 13519 goto nla_put_failure; 13520 13521 genlmsg_end(msg, hdr); 13522 return 0; 13523 13524 nla_put_failure: 13525 genlmsg_cancel(msg, hdr); 13526 return -EMSGSIZE; 13527 } 13528 13529 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 13530 struct wireless_dev *wdev) 13531 { 13532 struct sk_buff *msg; 13533 13534 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13535 if (!msg) 13536 return; 13537 13538 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 13539 NL80211_CMD_TRIGGER_SCAN) < 0) { 13540 nlmsg_free(msg); 13541 return; 13542 } 13543 13544 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13545 NL80211_MCGRP_SCAN, GFP_KERNEL); 13546 } 13547 13548 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 13549 struct wireless_dev *wdev, bool aborted) 13550 { 13551 struct sk_buff *msg; 13552 13553 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13554 if (!msg) 13555 return NULL; 13556 13557 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 13558 aborted ? NL80211_CMD_SCAN_ABORTED : 13559 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 13560 nlmsg_free(msg); 13561 return NULL; 13562 } 13563 13564 return msg; 13565 } 13566 13567 /* send message created by nl80211_build_scan_msg() */ 13568 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev, 13569 struct sk_buff *msg) 13570 { 13571 if (!msg) 13572 return; 13573 13574 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13575 NL80211_MCGRP_SCAN, GFP_KERNEL); 13576 } 13577 13578 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd) 13579 { 13580 struct sk_buff *msg; 13581 13582 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13583 if (!msg) 13584 return; 13585 13586 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) { 13587 nlmsg_free(msg); 13588 return; 13589 } 13590 13591 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0, 13592 NL80211_MCGRP_SCAN, GFP_KERNEL); 13593 } 13594 13595 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 13596 struct regulatory_request *request) 13597 { 13598 /* Userspace can always count this one always being set */ 13599 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 13600 goto nla_put_failure; 13601 13602 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 13603 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 13604 NL80211_REGDOM_TYPE_WORLD)) 13605 goto nla_put_failure; 13606 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 13607 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 13608 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 13609 goto nla_put_failure; 13610 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 13611 request->intersect) { 13612 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 13613 NL80211_REGDOM_TYPE_INTERSECTION)) 13614 goto nla_put_failure; 13615 } else { 13616 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 13617 NL80211_REGDOM_TYPE_COUNTRY) || 13618 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 13619 request->alpha2)) 13620 goto nla_put_failure; 13621 } 13622 13623 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 13624 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 13625 13626 if (wiphy && 13627 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 13628 goto nla_put_failure; 13629 13630 if (wiphy && 13631 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 13632 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 13633 goto nla_put_failure; 13634 } 13635 13636 return true; 13637 13638 nla_put_failure: 13639 return false; 13640 } 13641 13642 /* 13643 * This can happen on global regulatory changes or device specific settings 13644 * based on custom regulatory domains. 13645 */ 13646 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 13647 struct regulatory_request *request) 13648 { 13649 struct sk_buff *msg; 13650 void *hdr; 13651 13652 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13653 if (!msg) 13654 return; 13655 13656 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 13657 if (!hdr) { 13658 nlmsg_free(msg); 13659 return; 13660 } 13661 13662 if (nl80211_reg_change_event_fill(msg, request) == false) 13663 goto nla_put_failure; 13664 13665 genlmsg_end(msg, hdr); 13666 13667 rcu_read_lock(); 13668 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 13669 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 13670 rcu_read_unlock(); 13671 13672 return; 13673 13674 nla_put_failure: 13675 genlmsg_cancel(msg, hdr); 13676 nlmsg_free(msg); 13677 } 13678 13679 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 13680 struct net_device *netdev, 13681 const u8 *buf, size_t len, 13682 enum nl80211_commands cmd, gfp_t gfp, 13683 int uapsd_queues) 13684 { 13685 struct sk_buff *msg; 13686 void *hdr; 13687 13688 msg = nlmsg_new(100 + len, gfp); 13689 if (!msg) 13690 return; 13691 13692 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 13693 if (!hdr) { 13694 nlmsg_free(msg); 13695 return; 13696 } 13697 13698 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13699 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13700 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 13701 goto nla_put_failure; 13702 13703 if (uapsd_queues >= 0) { 13704 struct nlattr *nla_wmm = 13705 nla_nest_start(msg, NL80211_ATTR_STA_WME); 13706 if (!nla_wmm) 13707 goto nla_put_failure; 13708 13709 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 13710 uapsd_queues)) 13711 goto nla_put_failure; 13712 13713 nla_nest_end(msg, nla_wmm); 13714 } 13715 13716 genlmsg_end(msg, hdr); 13717 13718 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13719 NL80211_MCGRP_MLME, gfp); 13720 return; 13721 13722 nla_put_failure: 13723 genlmsg_cancel(msg, hdr); 13724 nlmsg_free(msg); 13725 } 13726 13727 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 13728 struct net_device *netdev, const u8 *buf, 13729 size_t len, gfp_t gfp) 13730 { 13731 nl80211_send_mlme_event(rdev, netdev, buf, len, 13732 NL80211_CMD_AUTHENTICATE, gfp, -1); 13733 } 13734 13735 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 13736 struct net_device *netdev, const u8 *buf, 13737 size_t len, gfp_t gfp, int uapsd_queues) 13738 { 13739 nl80211_send_mlme_event(rdev, netdev, buf, len, 13740 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 13741 } 13742 13743 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 13744 struct net_device *netdev, const u8 *buf, 13745 size_t len, gfp_t gfp) 13746 { 13747 nl80211_send_mlme_event(rdev, netdev, buf, len, 13748 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 13749 } 13750 13751 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 13752 struct net_device *netdev, const u8 *buf, 13753 size_t len, gfp_t gfp) 13754 { 13755 nl80211_send_mlme_event(rdev, netdev, buf, len, 13756 NL80211_CMD_DISASSOCIATE, gfp, -1); 13757 } 13758 13759 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 13760 size_t len) 13761 { 13762 struct wireless_dev *wdev = dev->ieee80211_ptr; 13763 struct wiphy *wiphy = wdev->wiphy; 13764 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13765 const struct ieee80211_mgmt *mgmt = (void *)buf; 13766 u32 cmd; 13767 13768 if (WARN_ON(len < 2)) 13769 return; 13770 13771 if (ieee80211_is_deauth(mgmt->frame_control)) 13772 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 13773 else 13774 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 13775 13776 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 13777 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 13778 } 13779 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 13780 13781 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 13782 struct net_device *netdev, int cmd, 13783 const u8 *addr, gfp_t gfp) 13784 { 13785 struct sk_buff *msg; 13786 void *hdr; 13787 13788 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13789 if (!msg) 13790 return; 13791 13792 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 13793 if (!hdr) { 13794 nlmsg_free(msg); 13795 return; 13796 } 13797 13798 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13799 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13800 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 13801 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 13802 goto nla_put_failure; 13803 13804 genlmsg_end(msg, hdr); 13805 13806 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13807 NL80211_MCGRP_MLME, gfp); 13808 return; 13809 13810 nla_put_failure: 13811 genlmsg_cancel(msg, hdr); 13812 nlmsg_free(msg); 13813 } 13814 13815 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 13816 struct net_device *netdev, const u8 *addr, 13817 gfp_t gfp) 13818 { 13819 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 13820 addr, gfp); 13821 } 13822 13823 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 13824 struct net_device *netdev, const u8 *addr, 13825 gfp_t gfp) 13826 { 13827 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 13828 addr, gfp); 13829 } 13830 13831 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 13832 struct net_device *netdev, 13833 struct cfg80211_connect_resp_params *cr, 13834 gfp_t gfp) 13835 { 13836 struct sk_buff *msg; 13837 void *hdr; 13838 13839 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len + 13840 cr->fils_kek_len + cr->pmk_len + 13841 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp); 13842 if (!msg) 13843 return; 13844 13845 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 13846 if (!hdr) { 13847 nlmsg_free(msg); 13848 return; 13849 } 13850 13851 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13852 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13853 (cr->bssid && 13854 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) || 13855 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, 13856 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE : 13857 cr->status) || 13858 (cr->status < 0 && 13859 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 13860 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON, 13861 cr->timeout_reason))) || 13862 (cr->req_ie && 13863 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) || 13864 (cr->resp_ie && 13865 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len, 13866 cr->resp_ie)) || 13867 (cr->update_erp_next_seq_num && 13868 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM, 13869 cr->fils_erp_next_seq_num)) || 13870 (cr->status == WLAN_STATUS_SUCCESS && 13871 ((cr->fils_kek && 13872 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len, 13873 cr->fils_kek)) || 13874 (cr->pmk && 13875 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) || 13876 (cr->pmkid && 13877 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid))))) 13878 goto nla_put_failure; 13879 13880 genlmsg_end(msg, hdr); 13881 13882 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13883 NL80211_MCGRP_MLME, gfp); 13884 return; 13885 13886 nla_put_failure: 13887 genlmsg_cancel(msg, hdr); 13888 nlmsg_free(msg); 13889 } 13890 13891 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 13892 struct net_device *netdev, 13893 struct cfg80211_roam_info *info, gfp_t gfp) 13894 { 13895 struct sk_buff *msg; 13896 void *hdr; 13897 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid; 13898 13899 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp); 13900 if (!msg) 13901 return; 13902 13903 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 13904 if (!hdr) { 13905 nlmsg_free(msg); 13906 return; 13907 } 13908 13909 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13910 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13911 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 13912 (info->req_ie && 13913 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len, 13914 info->req_ie)) || 13915 (info->resp_ie && 13916 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len, 13917 info->resp_ie))) 13918 goto nla_put_failure; 13919 13920 genlmsg_end(msg, hdr); 13921 13922 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13923 NL80211_MCGRP_MLME, gfp); 13924 return; 13925 13926 nla_put_failure: 13927 genlmsg_cancel(msg, hdr); 13928 nlmsg_free(msg); 13929 } 13930 13931 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev, 13932 struct net_device *netdev, const u8 *bssid) 13933 { 13934 struct sk_buff *msg; 13935 void *hdr; 13936 13937 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13938 if (!msg) 13939 return; 13940 13941 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED); 13942 if (!hdr) { 13943 nlmsg_free(msg); 13944 return; 13945 } 13946 13947 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 13948 goto nla_put_failure; 13949 13950 genlmsg_end(msg, hdr); 13951 13952 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13953 NL80211_MCGRP_MLME, GFP_KERNEL); 13954 return; 13955 13956 nla_put_failure: 13957 genlmsg_cancel(msg, hdr); 13958 nlmsg_free(msg); 13959 } 13960 13961 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 13962 struct net_device *netdev, u16 reason, 13963 const u8 *ie, size_t ie_len, bool from_ap) 13964 { 13965 struct sk_buff *msg; 13966 void *hdr; 13967 13968 msg = nlmsg_new(100 + ie_len, GFP_KERNEL); 13969 if (!msg) 13970 return; 13971 13972 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 13973 if (!hdr) { 13974 nlmsg_free(msg); 13975 return; 13976 } 13977 13978 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13979 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13980 (reason && 13981 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 13982 (from_ap && 13983 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 13984 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 13985 goto nla_put_failure; 13986 13987 genlmsg_end(msg, hdr); 13988 13989 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13990 NL80211_MCGRP_MLME, GFP_KERNEL); 13991 return; 13992 13993 nla_put_failure: 13994 genlmsg_cancel(msg, hdr); 13995 nlmsg_free(msg); 13996 } 13997 13998 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 13999 struct net_device *netdev, const u8 *bssid, 14000 gfp_t gfp) 14001 { 14002 struct sk_buff *msg; 14003 void *hdr; 14004 14005 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14006 if (!msg) 14007 return; 14008 14009 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 14010 if (!hdr) { 14011 nlmsg_free(msg); 14012 return; 14013 } 14014 14015 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14016 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14017 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 14018 goto nla_put_failure; 14019 14020 genlmsg_end(msg, hdr); 14021 14022 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14023 NL80211_MCGRP_MLME, gfp); 14024 return; 14025 14026 nla_put_failure: 14027 genlmsg_cancel(msg, hdr); 14028 nlmsg_free(msg); 14029 } 14030 14031 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 14032 const u8* ie, u8 ie_len, gfp_t gfp) 14033 { 14034 struct wireless_dev *wdev = dev->ieee80211_ptr; 14035 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14036 struct sk_buff *msg; 14037 void *hdr; 14038 14039 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 14040 return; 14041 14042 trace_cfg80211_notify_new_peer_candidate(dev, addr); 14043 14044 msg = nlmsg_new(100 + ie_len, gfp); 14045 if (!msg) 14046 return; 14047 14048 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 14049 if (!hdr) { 14050 nlmsg_free(msg); 14051 return; 14052 } 14053 14054 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14055 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14056 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 14057 (ie_len && ie && 14058 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 14059 goto nla_put_failure; 14060 14061 genlmsg_end(msg, hdr); 14062 14063 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14064 NL80211_MCGRP_MLME, gfp); 14065 return; 14066 14067 nla_put_failure: 14068 genlmsg_cancel(msg, hdr); 14069 nlmsg_free(msg); 14070 } 14071 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 14072 14073 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 14074 struct net_device *netdev, const u8 *addr, 14075 enum nl80211_key_type key_type, int key_id, 14076 const u8 *tsc, gfp_t gfp) 14077 { 14078 struct sk_buff *msg; 14079 void *hdr; 14080 14081 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14082 if (!msg) 14083 return; 14084 14085 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 14086 if (!hdr) { 14087 nlmsg_free(msg); 14088 return; 14089 } 14090 14091 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14092 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14093 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 14094 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 14095 (key_id != -1 && 14096 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 14097 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 14098 goto nla_put_failure; 14099 14100 genlmsg_end(msg, hdr); 14101 14102 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14103 NL80211_MCGRP_MLME, gfp); 14104 return; 14105 14106 nla_put_failure: 14107 genlmsg_cancel(msg, hdr); 14108 nlmsg_free(msg); 14109 } 14110 14111 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 14112 struct ieee80211_channel *channel_before, 14113 struct ieee80211_channel *channel_after) 14114 { 14115 struct sk_buff *msg; 14116 void *hdr; 14117 struct nlattr *nl_freq; 14118 14119 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 14120 if (!msg) 14121 return; 14122 14123 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 14124 if (!hdr) { 14125 nlmsg_free(msg); 14126 return; 14127 } 14128 14129 /* 14130 * Since we are applying the beacon hint to a wiphy we know its 14131 * wiphy_idx is valid 14132 */ 14133 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 14134 goto nla_put_failure; 14135 14136 /* Before */ 14137 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 14138 if (!nl_freq) 14139 goto nla_put_failure; 14140 if (nl80211_msg_put_channel(msg, channel_before, false)) 14141 goto nla_put_failure; 14142 nla_nest_end(msg, nl_freq); 14143 14144 /* After */ 14145 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 14146 if (!nl_freq) 14147 goto nla_put_failure; 14148 if (nl80211_msg_put_channel(msg, channel_after, false)) 14149 goto nla_put_failure; 14150 nla_nest_end(msg, nl_freq); 14151 14152 genlmsg_end(msg, hdr); 14153 14154 rcu_read_lock(); 14155 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 14156 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 14157 rcu_read_unlock(); 14158 14159 return; 14160 14161 nla_put_failure: 14162 genlmsg_cancel(msg, hdr); 14163 nlmsg_free(msg); 14164 } 14165 14166 static void nl80211_send_remain_on_chan_event( 14167 int cmd, struct cfg80211_registered_device *rdev, 14168 struct wireless_dev *wdev, u64 cookie, 14169 struct ieee80211_channel *chan, 14170 unsigned int duration, gfp_t gfp) 14171 { 14172 struct sk_buff *msg; 14173 void *hdr; 14174 14175 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14176 if (!msg) 14177 return; 14178 14179 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14180 if (!hdr) { 14181 nlmsg_free(msg); 14182 return; 14183 } 14184 14185 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14186 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14187 wdev->netdev->ifindex)) || 14188 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14189 NL80211_ATTR_PAD) || 14190 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 14191 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 14192 NL80211_CHAN_NO_HT) || 14193 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 14194 NL80211_ATTR_PAD)) 14195 goto nla_put_failure; 14196 14197 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 14198 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 14199 goto nla_put_failure; 14200 14201 genlmsg_end(msg, hdr); 14202 14203 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14204 NL80211_MCGRP_MLME, gfp); 14205 return; 14206 14207 nla_put_failure: 14208 genlmsg_cancel(msg, hdr); 14209 nlmsg_free(msg); 14210 } 14211 14212 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 14213 struct ieee80211_channel *chan, 14214 unsigned int duration, gfp_t gfp) 14215 { 14216 struct wiphy *wiphy = wdev->wiphy; 14217 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14218 14219 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 14220 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 14221 rdev, wdev, cookie, chan, 14222 duration, gfp); 14223 } 14224 EXPORT_SYMBOL(cfg80211_ready_on_channel); 14225 14226 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 14227 struct ieee80211_channel *chan, 14228 gfp_t gfp) 14229 { 14230 struct wiphy *wiphy = wdev->wiphy; 14231 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14232 14233 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 14234 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 14235 rdev, wdev, cookie, chan, 0, gfp); 14236 } 14237 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 14238 14239 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 14240 struct station_info *sinfo, gfp_t gfp) 14241 { 14242 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14243 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14244 struct sk_buff *msg; 14245 14246 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 14247 14248 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14249 if (!msg) 14250 return; 14251 14252 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 14253 rdev, dev, mac_addr, sinfo) < 0) { 14254 nlmsg_free(msg); 14255 return; 14256 } 14257 14258 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14259 NL80211_MCGRP_MLME, gfp); 14260 } 14261 EXPORT_SYMBOL(cfg80211_new_sta); 14262 14263 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 14264 struct station_info *sinfo, gfp_t gfp) 14265 { 14266 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14267 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14268 struct sk_buff *msg; 14269 struct station_info empty_sinfo = {}; 14270 14271 if (!sinfo) 14272 sinfo = &empty_sinfo; 14273 14274 trace_cfg80211_del_sta(dev, mac_addr); 14275 14276 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14277 if (!msg) 14278 return; 14279 14280 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 14281 rdev, dev, mac_addr, sinfo) < 0) { 14282 nlmsg_free(msg); 14283 return; 14284 } 14285 14286 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14287 NL80211_MCGRP_MLME, gfp); 14288 } 14289 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 14290 14291 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 14292 enum nl80211_connect_failed_reason reason, 14293 gfp_t gfp) 14294 { 14295 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14296 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14297 struct sk_buff *msg; 14298 void *hdr; 14299 14300 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 14301 if (!msg) 14302 return; 14303 14304 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 14305 if (!hdr) { 14306 nlmsg_free(msg); 14307 return; 14308 } 14309 14310 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14311 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 14312 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 14313 goto nla_put_failure; 14314 14315 genlmsg_end(msg, hdr); 14316 14317 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14318 NL80211_MCGRP_MLME, gfp); 14319 return; 14320 14321 nla_put_failure: 14322 genlmsg_cancel(msg, hdr); 14323 nlmsg_free(msg); 14324 } 14325 EXPORT_SYMBOL(cfg80211_conn_failed); 14326 14327 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 14328 const u8 *addr, gfp_t gfp) 14329 { 14330 struct wireless_dev *wdev = dev->ieee80211_ptr; 14331 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14332 struct sk_buff *msg; 14333 void *hdr; 14334 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid); 14335 14336 if (!nlportid) 14337 return false; 14338 14339 msg = nlmsg_new(100, gfp); 14340 if (!msg) 14341 return true; 14342 14343 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14344 if (!hdr) { 14345 nlmsg_free(msg); 14346 return true; 14347 } 14348 14349 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14350 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14351 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 14352 goto nla_put_failure; 14353 14354 genlmsg_end(msg, hdr); 14355 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 14356 return true; 14357 14358 nla_put_failure: 14359 genlmsg_cancel(msg, hdr); 14360 nlmsg_free(msg); 14361 return true; 14362 } 14363 14364 bool cfg80211_rx_spurious_frame(struct net_device *dev, 14365 const u8 *addr, gfp_t gfp) 14366 { 14367 struct wireless_dev *wdev = dev->ieee80211_ptr; 14368 bool ret; 14369 14370 trace_cfg80211_rx_spurious_frame(dev, addr); 14371 14372 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 14373 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 14374 trace_cfg80211_return_bool(false); 14375 return false; 14376 } 14377 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 14378 addr, gfp); 14379 trace_cfg80211_return_bool(ret); 14380 return ret; 14381 } 14382 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 14383 14384 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 14385 const u8 *addr, gfp_t gfp) 14386 { 14387 struct wireless_dev *wdev = dev->ieee80211_ptr; 14388 bool ret; 14389 14390 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 14391 14392 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 14393 wdev->iftype != NL80211_IFTYPE_P2P_GO && 14394 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 14395 trace_cfg80211_return_bool(false); 14396 return false; 14397 } 14398 ret = __nl80211_unexpected_frame(dev, 14399 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 14400 addr, gfp); 14401 trace_cfg80211_return_bool(ret); 14402 return ret; 14403 } 14404 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 14405 14406 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 14407 struct wireless_dev *wdev, u32 nlportid, 14408 int freq, int sig_dbm, 14409 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 14410 { 14411 struct net_device *netdev = wdev->netdev; 14412 struct sk_buff *msg; 14413 void *hdr; 14414 14415 msg = nlmsg_new(100 + len, gfp); 14416 if (!msg) 14417 return -ENOMEM; 14418 14419 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 14420 if (!hdr) { 14421 nlmsg_free(msg); 14422 return -ENOMEM; 14423 } 14424 14425 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14426 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14427 netdev->ifindex)) || 14428 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14429 NL80211_ATTR_PAD) || 14430 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 14431 (sig_dbm && 14432 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 14433 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 14434 (flags && 14435 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 14436 goto nla_put_failure; 14437 14438 genlmsg_end(msg, hdr); 14439 14440 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 14441 14442 nla_put_failure: 14443 genlmsg_cancel(msg, hdr); 14444 nlmsg_free(msg); 14445 return -ENOBUFS; 14446 } 14447 14448 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 14449 const u8 *buf, size_t len, bool ack, gfp_t gfp) 14450 { 14451 struct wiphy *wiphy = wdev->wiphy; 14452 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14453 struct net_device *netdev = wdev->netdev; 14454 struct sk_buff *msg; 14455 void *hdr; 14456 14457 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 14458 14459 msg = nlmsg_new(100 + len, gfp); 14460 if (!msg) 14461 return; 14462 14463 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 14464 if (!hdr) { 14465 nlmsg_free(msg); 14466 return; 14467 } 14468 14469 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14470 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14471 netdev->ifindex)) || 14472 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14473 NL80211_ATTR_PAD) || 14474 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 14475 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 14476 NL80211_ATTR_PAD) || 14477 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 14478 goto nla_put_failure; 14479 14480 genlmsg_end(msg, hdr); 14481 14482 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14483 NL80211_MCGRP_MLME, gfp); 14484 return; 14485 14486 nla_put_failure: 14487 genlmsg_cancel(msg, hdr); 14488 nlmsg_free(msg); 14489 } 14490 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 14491 14492 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 14493 const char *mac, gfp_t gfp) 14494 { 14495 struct wireless_dev *wdev = dev->ieee80211_ptr; 14496 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14497 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14498 void **cb; 14499 14500 if (!msg) 14501 return NULL; 14502 14503 cb = (void **)msg->cb; 14504 14505 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 14506 if (!cb[0]) { 14507 nlmsg_free(msg); 14508 return NULL; 14509 } 14510 14511 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14512 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 14513 goto nla_put_failure; 14514 14515 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 14516 goto nla_put_failure; 14517 14518 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 14519 if (!cb[1]) 14520 goto nla_put_failure; 14521 14522 cb[2] = rdev; 14523 14524 return msg; 14525 nla_put_failure: 14526 nlmsg_free(msg); 14527 return NULL; 14528 } 14529 14530 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 14531 { 14532 void **cb = (void **)msg->cb; 14533 struct cfg80211_registered_device *rdev = cb[2]; 14534 14535 nla_nest_end(msg, cb[1]); 14536 genlmsg_end(msg, cb[0]); 14537 14538 memset(msg->cb, 0, sizeof(msg->cb)); 14539 14540 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14541 NL80211_MCGRP_MLME, gfp); 14542 } 14543 14544 void cfg80211_cqm_rssi_notify(struct net_device *dev, 14545 enum nl80211_cqm_rssi_threshold_event rssi_event, 14546 s32 rssi_level, gfp_t gfp) 14547 { 14548 struct sk_buff *msg; 14549 struct wireless_dev *wdev = dev->ieee80211_ptr; 14550 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14551 14552 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level); 14553 14554 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 14555 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 14556 return; 14557 14558 if (wdev->cqm_config) { 14559 wdev->cqm_config->last_rssi_event_value = rssi_level; 14560 14561 cfg80211_cqm_rssi_update(rdev, dev); 14562 14563 if (rssi_level == 0) 14564 rssi_level = wdev->cqm_config->last_rssi_event_value; 14565 } 14566 14567 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 14568 if (!msg) 14569 return; 14570 14571 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 14572 rssi_event)) 14573 goto nla_put_failure; 14574 14575 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL, 14576 rssi_level)) 14577 goto nla_put_failure; 14578 14579 cfg80211_send_cqm(msg, gfp); 14580 14581 return; 14582 14583 nla_put_failure: 14584 nlmsg_free(msg); 14585 } 14586 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 14587 14588 void cfg80211_cqm_txe_notify(struct net_device *dev, 14589 const u8 *peer, u32 num_packets, 14590 u32 rate, u32 intvl, gfp_t gfp) 14591 { 14592 struct sk_buff *msg; 14593 14594 msg = cfg80211_prepare_cqm(dev, peer, gfp); 14595 if (!msg) 14596 return; 14597 14598 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 14599 goto nla_put_failure; 14600 14601 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 14602 goto nla_put_failure; 14603 14604 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 14605 goto nla_put_failure; 14606 14607 cfg80211_send_cqm(msg, gfp); 14608 return; 14609 14610 nla_put_failure: 14611 nlmsg_free(msg); 14612 } 14613 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 14614 14615 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 14616 const u8 *peer, u32 num_packets, gfp_t gfp) 14617 { 14618 struct sk_buff *msg; 14619 14620 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 14621 14622 msg = cfg80211_prepare_cqm(dev, peer, gfp); 14623 if (!msg) 14624 return; 14625 14626 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 14627 goto nla_put_failure; 14628 14629 cfg80211_send_cqm(msg, gfp); 14630 return; 14631 14632 nla_put_failure: 14633 nlmsg_free(msg); 14634 } 14635 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 14636 14637 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 14638 { 14639 struct sk_buff *msg; 14640 14641 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 14642 if (!msg) 14643 return; 14644 14645 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 14646 goto nla_put_failure; 14647 14648 cfg80211_send_cqm(msg, gfp); 14649 return; 14650 14651 nla_put_failure: 14652 nlmsg_free(msg); 14653 } 14654 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 14655 14656 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 14657 struct net_device *netdev, const u8 *bssid, 14658 const u8 *replay_ctr, gfp_t gfp) 14659 { 14660 struct sk_buff *msg; 14661 struct nlattr *rekey_attr; 14662 void *hdr; 14663 14664 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14665 if (!msg) 14666 return; 14667 14668 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 14669 if (!hdr) { 14670 nlmsg_free(msg); 14671 return; 14672 } 14673 14674 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14675 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14676 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 14677 goto nla_put_failure; 14678 14679 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 14680 if (!rekey_attr) 14681 goto nla_put_failure; 14682 14683 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 14684 NL80211_REPLAY_CTR_LEN, replay_ctr)) 14685 goto nla_put_failure; 14686 14687 nla_nest_end(msg, rekey_attr); 14688 14689 genlmsg_end(msg, hdr); 14690 14691 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14692 NL80211_MCGRP_MLME, gfp); 14693 return; 14694 14695 nla_put_failure: 14696 genlmsg_cancel(msg, hdr); 14697 nlmsg_free(msg); 14698 } 14699 14700 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 14701 const u8 *replay_ctr, gfp_t gfp) 14702 { 14703 struct wireless_dev *wdev = dev->ieee80211_ptr; 14704 struct wiphy *wiphy = wdev->wiphy; 14705 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14706 14707 trace_cfg80211_gtk_rekey_notify(dev, bssid); 14708 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 14709 } 14710 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 14711 14712 static void 14713 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 14714 struct net_device *netdev, int index, 14715 const u8 *bssid, bool preauth, gfp_t gfp) 14716 { 14717 struct sk_buff *msg; 14718 struct nlattr *attr; 14719 void *hdr; 14720 14721 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14722 if (!msg) 14723 return; 14724 14725 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 14726 if (!hdr) { 14727 nlmsg_free(msg); 14728 return; 14729 } 14730 14731 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14732 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 14733 goto nla_put_failure; 14734 14735 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 14736 if (!attr) 14737 goto nla_put_failure; 14738 14739 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 14740 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 14741 (preauth && 14742 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 14743 goto nla_put_failure; 14744 14745 nla_nest_end(msg, attr); 14746 14747 genlmsg_end(msg, hdr); 14748 14749 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14750 NL80211_MCGRP_MLME, gfp); 14751 return; 14752 14753 nla_put_failure: 14754 genlmsg_cancel(msg, hdr); 14755 nlmsg_free(msg); 14756 } 14757 14758 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 14759 const u8 *bssid, bool preauth, gfp_t gfp) 14760 { 14761 struct wireless_dev *wdev = dev->ieee80211_ptr; 14762 struct wiphy *wiphy = wdev->wiphy; 14763 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14764 14765 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 14766 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 14767 } 14768 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 14769 14770 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 14771 struct net_device *netdev, 14772 struct cfg80211_chan_def *chandef, 14773 gfp_t gfp, 14774 enum nl80211_commands notif, 14775 u8 count) 14776 { 14777 struct sk_buff *msg; 14778 void *hdr; 14779 14780 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14781 if (!msg) 14782 return; 14783 14784 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 14785 if (!hdr) { 14786 nlmsg_free(msg); 14787 return; 14788 } 14789 14790 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 14791 goto nla_put_failure; 14792 14793 if (nl80211_send_chandef(msg, chandef)) 14794 goto nla_put_failure; 14795 14796 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 14797 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 14798 goto nla_put_failure; 14799 14800 genlmsg_end(msg, hdr); 14801 14802 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14803 NL80211_MCGRP_MLME, gfp); 14804 return; 14805 14806 nla_put_failure: 14807 genlmsg_cancel(msg, hdr); 14808 nlmsg_free(msg); 14809 } 14810 14811 void cfg80211_ch_switch_notify(struct net_device *dev, 14812 struct cfg80211_chan_def *chandef) 14813 { 14814 struct wireless_dev *wdev = dev->ieee80211_ptr; 14815 struct wiphy *wiphy = wdev->wiphy; 14816 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14817 14818 ASSERT_WDEV_LOCK(wdev); 14819 14820 trace_cfg80211_ch_switch_notify(dev, chandef); 14821 14822 wdev->chandef = *chandef; 14823 wdev->preset_chandef = *chandef; 14824 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 14825 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 14826 } 14827 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 14828 14829 void cfg80211_ch_switch_started_notify(struct net_device *dev, 14830 struct cfg80211_chan_def *chandef, 14831 u8 count) 14832 { 14833 struct wireless_dev *wdev = dev->ieee80211_ptr; 14834 struct wiphy *wiphy = wdev->wiphy; 14835 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14836 14837 trace_cfg80211_ch_switch_started_notify(dev, chandef); 14838 14839 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 14840 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 14841 } 14842 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 14843 14844 void 14845 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 14846 const struct cfg80211_chan_def *chandef, 14847 enum nl80211_radar_event event, 14848 struct net_device *netdev, gfp_t gfp) 14849 { 14850 struct sk_buff *msg; 14851 void *hdr; 14852 14853 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14854 if (!msg) 14855 return; 14856 14857 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 14858 if (!hdr) { 14859 nlmsg_free(msg); 14860 return; 14861 } 14862 14863 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 14864 goto nla_put_failure; 14865 14866 /* NOP and radar events don't need a netdev parameter */ 14867 if (netdev) { 14868 struct wireless_dev *wdev = netdev->ieee80211_ptr; 14869 14870 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14871 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14872 NL80211_ATTR_PAD)) 14873 goto nla_put_failure; 14874 } 14875 14876 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 14877 goto nla_put_failure; 14878 14879 if (nl80211_send_chandef(msg, chandef)) 14880 goto nla_put_failure; 14881 14882 genlmsg_end(msg, hdr); 14883 14884 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14885 NL80211_MCGRP_MLME, gfp); 14886 return; 14887 14888 nla_put_failure: 14889 genlmsg_cancel(msg, hdr); 14890 nlmsg_free(msg); 14891 } 14892 14893 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 14894 u64 cookie, bool acked, gfp_t gfp) 14895 { 14896 struct wireless_dev *wdev = dev->ieee80211_ptr; 14897 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14898 struct sk_buff *msg; 14899 void *hdr; 14900 14901 trace_cfg80211_probe_status(dev, addr, cookie, acked); 14902 14903 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14904 14905 if (!msg) 14906 return; 14907 14908 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 14909 if (!hdr) { 14910 nlmsg_free(msg); 14911 return; 14912 } 14913 14914 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14915 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14916 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 14917 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 14918 NL80211_ATTR_PAD) || 14919 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 14920 goto nla_put_failure; 14921 14922 genlmsg_end(msg, hdr); 14923 14924 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14925 NL80211_MCGRP_MLME, gfp); 14926 return; 14927 14928 nla_put_failure: 14929 genlmsg_cancel(msg, hdr); 14930 nlmsg_free(msg); 14931 } 14932 EXPORT_SYMBOL(cfg80211_probe_status); 14933 14934 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 14935 const u8 *frame, size_t len, 14936 int freq, int sig_dbm) 14937 { 14938 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14939 struct sk_buff *msg; 14940 void *hdr; 14941 struct cfg80211_beacon_registration *reg; 14942 14943 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 14944 14945 spin_lock_bh(&rdev->beacon_registrations_lock); 14946 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 14947 msg = nlmsg_new(len + 100, GFP_ATOMIC); 14948 if (!msg) { 14949 spin_unlock_bh(&rdev->beacon_registrations_lock); 14950 return; 14951 } 14952 14953 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 14954 if (!hdr) 14955 goto nla_put_failure; 14956 14957 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14958 (freq && 14959 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 14960 (sig_dbm && 14961 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 14962 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 14963 goto nla_put_failure; 14964 14965 genlmsg_end(msg, hdr); 14966 14967 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 14968 } 14969 spin_unlock_bh(&rdev->beacon_registrations_lock); 14970 return; 14971 14972 nla_put_failure: 14973 spin_unlock_bh(&rdev->beacon_registrations_lock); 14974 if (hdr) 14975 genlmsg_cancel(msg, hdr); 14976 nlmsg_free(msg); 14977 } 14978 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 14979 14980 #ifdef CONFIG_PM 14981 static int cfg80211_net_detect_results(struct sk_buff *msg, 14982 struct cfg80211_wowlan_wakeup *wakeup) 14983 { 14984 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 14985 struct nlattr *nl_results, *nl_match, *nl_freqs; 14986 int i, j; 14987 14988 nl_results = nla_nest_start( 14989 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 14990 if (!nl_results) 14991 return -EMSGSIZE; 14992 14993 for (i = 0; i < nd->n_matches; i++) { 14994 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 14995 14996 nl_match = nla_nest_start(msg, i); 14997 if (!nl_match) 14998 break; 14999 15000 /* The SSID attribute is optional in nl80211, but for 15001 * simplicity reasons it's always present in the 15002 * cfg80211 structure. If a driver can't pass the 15003 * SSID, that needs to be changed. A zero length SSID 15004 * is still a valid SSID (wildcard), so it cannot be 15005 * used for this purpose. 15006 */ 15007 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 15008 match->ssid.ssid)) { 15009 nla_nest_cancel(msg, nl_match); 15010 goto out; 15011 } 15012 15013 if (match->n_channels) { 15014 nl_freqs = nla_nest_start( 15015 msg, NL80211_ATTR_SCAN_FREQUENCIES); 15016 if (!nl_freqs) { 15017 nla_nest_cancel(msg, nl_match); 15018 goto out; 15019 } 15020 15021 for (j = 0; j < match->n_channels; j++) { 15022 if (nla_put_u32(msg, j, match->channels[j])) { 15023 nla_nest_cancel(msg, nl_freqs); 15024 nla_nest_cancel(msg, nl_match); 15025 goto out; 15026 } 15027 } 15028 15029 nla_nest_end(msg, nl_freqs); 15030 } 15031 15032 nla_nest_end(msg, nl_match); 15033 } 15034 15035 out: 15036 nla_nest_end(msg, nl_results); 15037 return 0; 15038 } 15039 15040 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 15041 struct cfg80211_wowlan_wakeup *wakeup, 15042 gfp_t gfp) 15043 { 15044 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15045 struct sk_buff *msg; 15046 void *hdr; 15047 int size = 200; 15048 15049 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 15050 15051 if (wakeup) 15052 size += wakeup->packet_present_len; 15053 15054 msg = nlmsg_new(size, gfp); 15055 if (!msg) 15056 return; 15057 15058 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 15059 if (!hdr) 15060 goto free_msg; 15061 15062 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15063 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15064 NL80211_ATTR_PAD)) 15065 goto free_msg; 15066 15067 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 15068 wdev->netdev->ifindex)) 15069 goto free_msg; 15070 15071 if (wakeup) { 15072 struct nlattr *reasons; 15073 15074 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 15075 if (!reasons) 15076 goto free_msg; 15077 15078 if (wakeup->disconnect && 15079 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 15080 goto free_msg; 15081 if (wakeup->magic_pkt && 15082 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 15083 goto free_msg; 15084 if (wakeup->gtk_rekey_failure && 15085 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 15086 goto free_msg; 15087 if (wakeup->eap_identity_req && 15088 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 15089 goto free_msg; 15090 if (wakeup->four_way_handshake && 15091 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 15092 goto free_msg; 15093 if (wakeup->rfkill_release && 15094 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 15095 goto free_msg; 15096 15097 if (wakeup->pattern_idx >= 0 && 15098 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 15099 wakeup->pattern_idx)) 15100 goto free_msg; 15101 15102 if (wakeup->tcp_match && 15103 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 15104 goto free_msg; 15105 15106 if (wakeup->tcp_connlost && 15107 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 15108 goto free_msg; 15109 15110 if (wakeup->tcp_nomoretokens && 15111 nla_put_flag(msg, 15112 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 15113 goto free_msg; 15114 15115 if (wakeup->packet) { 15116 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 15117 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 15118 15119 if (!wakeup->packet_80211) { 15120 pkt_attr = 15121 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 15122 len_attr = 15123 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 15124 } 15125 15126 if (wakeup->packet_len && 15127 nla_put_u32(msg, len_attr, wakeup->packet_len)) 15128 goto free_msg; 15129 15130 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 15131 wakeup->packet)) 15132 goto free_msg; 15133 } 15134 15135 if (wakeup->net_detect && 15136 cfg80211_net_detect_results(msg, wakeup)) 15137 goto free_msg; 15138 15139 nla_nest_end(msg, reasons); 15140 } 15141 15142 genlmsg_end(msg, hdr); 15143 15144 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15145 NL80211_MCGRP_MLME, gfp); 15146 return; 15147 15148 free_msg: 15149 nlmsg_free(msg); 15150 } 15151 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 15152 #endif 15153 15154 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 15155 enum nl80211_tdls_operation oper, 15156 u16 reason_code, gfp_t gfp) 15157 { 15158 struct wireless_dev *wdev = dev->ieee80211_ptr; 15159 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15160 struct sk_buff *msg; 15161 void *hdr; 15162 15163 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 15164 reason_code); 15165 15166 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15167 if (!msg) 15168 return; 15169 15170 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 15171 if (!hdr) { 15172 nlmsg_free(msg); 15173 return; 15174 } 15175 15176 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15177 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 15178 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 15179 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 15180 (reason_code > 0 && 15181 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 15182 goto nla_put_failure; 15183 15184 genlmsg_end(msg, hdr); 15185 15186 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15187 NL80211_MCGRP_MLME, gfp); 15188 return; 15189 15190 nla_put_failure: 15191 genlmsg_cancel(msg, hdr); 15192 nlmsg_free(msg); 15193 } 15194 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 15195 15196 static int nl80211_netlink_notify(struct notifier_block * nb, 15197 unsigned long state, 15198 void *_notify) 15199 { 15200 struct netlink_notify *notify = _notify; 15201 struct cfg80211_registered_device *rdev; 15202 struct wireless_dev *wdev; 15203 struct cfg80211_beacon_registration *reg, *tmp; 15204 15205 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC) 15206 return NOTIFY_DONE; 15207 15208 rcu_read_lock(); 15209 15210 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 15211 struct cfg80211_sched_scan_request *sched_scan_req; 15212 15213 list_for_each_entry_rcu(sched_scan_req, 15214 &rdev->sched_scan_req_list, 15215 list) { 15216 if (sched_scan_req->owner_nlportid == notify->portid) { 15217 sched_scan_req->nl_owner_dead = true; 15218 schedule_work(&rdev->sched_scan_stop_wk); 15219 } 15220 } 15221 15222 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) { 15223 cfg80211_mlme_unregister_socket(wdev, notify->portid); 15224 15225 if (wdev->owner_nlportid == notify->portid) { 15226 wdev->nl_owner_dead = true; 15227 schedule_work(&rdev->destroy_work); 15228 } else if (wdev->conn_owner_nlportid == notify->portid) { 15229 schedule_work(&wdev->disconnect_wk); 15230 } 15231 } 15232 15233 spin_lock_bh(&rdev->beacon_registrations_lock); 15234 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 15235 list) { 15236 if (reg->nlportid == notify->portid) { 15237 list_del(®->list); 15238 kfree(reg); 15239 break; 15240 } 15241 } 15242 spin_unlock_bh(&rdev->beacon_registrations_lock); 15243 } 15244 15245 rcu_read_unlock(); 15246 15247 /* 15248 * It is possible that the user space process that is controlling the 15249 * indoor setting disappeared, so notify the regulatory core. 15250 */ 15251 regulatory_netlink_notify(notify->portid); 15252 return NOTIFY_OK; 15253 } 15254 15255 static struct notifier_block nl80211_netlink_notifier = { 15256 .notifier_call = nl80211_netlink_notify, 15257 }; 15258 15259 void cfg80211_ft_event(struct net_device *netdev, 15260 struct cfg80211_ft_event_params *ft_event) 15261 { 15262 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 15263 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15264 struct sk_buff *msg; 15265 void *hdr; 15266 15267 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 15268 15269 if (!ft_event->target_ap) 15270 return; 15271 15272 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL); 15273 if (!msg) 15274 return; 15275 15276 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 15277 if (!hdr) 15278 goto out; 15279 15280 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15281 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 15282 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 15283 goto out; 15284 15285 if (ft_event->ies && 15286 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 15287 goto out; 15288 if (ft_event->ric_ies && 15289 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 15290 ft_event->ric_ies)) 15291 goto out; 15292 15293 genlmsg_end(msg, hdr); 15294 15295 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15296 NL80211_MCGRP_MLME, GFP_KERNEL); 15297 return; 15298 out: 15299 nlmsg_free(msg); 15300 } 15301 EXPORT_SYMBOL(cfg80211_ft_event); 15302 15303 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 15304 { 15305 struct cfg80211_registered_device *rdev; 15306 struct sk_buff *msg; 15307 void *hdr; 15308 u32 nlportid; 15309 15310 rdev = wiphy_to_rdev(wdev->wiphy); 15311 if (!rdev->crit_proto_nlportid) 15312 return; 15313 15314 nlportid = rdev->crit_proto_nlportid; 15315 rdev->crit_proto_nlportid = 0; 15316 15317 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15318 if (!msg) 15319 return; 15320 15321 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 15322 if (!hdr) 15323 goto nla_put_failure; 15324 15325 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15326 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15327 NL80211_ATTR_PAD)) 15328 goto nla_put_failure; 15329 15330 genlmsg_end(msg, hdr); 15331 15332 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 15333 return; 15334 15335 nla_put_failure: 15336 if (hdr) 15337 genlmsg_cancel(msg, hdr); 15338 nlmsg_free(msg); 15339 } 15340 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 15341 15342 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 15343 { 15344 struct wiphy *wiphy = wdev->wiphy; 15345 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15346 struct sk_buff *msg; 15347 void *hdr; 15348 15349 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 15350 if (!msg) 15351 return; 15352 15353 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 15354 if (!hdr) 15355 goto out; 15356 15357 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15358 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 15359 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15360 NL80211_ATTR_PAD)) 15361 goto out; 15362 15363 genlmsg_end(msg, hdr); 15364 15365 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 15366 NL80211_MCGRP_MLME, GFP_KERNEL); 15367 return; 15368 out: 15369 nlmsg_free(msg); 15370 } 15371 15372 /* initialisation/exit functions */ 15373 15374 int __init nl80211_init(void) 15375 { 15376 int err; 15377 15378 err = genl_register_family(&nl80211_fam); 15379 if (err) 15380 return err; 15381 15382 err = netlink_register_notifier(&nl80211_netlink_notifier); 15383 if (err) 15384 goto err_out; 15385 15386 return 0; 15387 err_out: 15388 genl_unregister_family(&nl80211_fam); 15389 return err; 15390 } 15391 15392 void nl80211_exit(void) 15393 { 15394 netlink_unregister_notifier(&nl80211_netlink_notifier); 15395 genl_unregister_family(&nl80211_fam); 15396 } 15397