1 #ifndef __NET_CFG80211_H 2 #define __NET_CFG80211_H 3 /* 4 * 802.11 device and configuration interface 5 * 6 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 7 * Copyright 2013-2014 Intel Mobile Communications GmbH 8 * Copyright 2015 Intel Deutschland GmbH 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License version 2 as 12 * published by the Free Software Foundation. 13 */ 14 15 #include <linux/netdevice.h> 16 #include <linux/debugfs.h> 17 #include <linux/list.h> 18 #include <linux/bug.h> 19 #include <linux/netlink.h> 20 #include <linux/skbuff.h> 21 #include <linux/nl80211.h> 22 #include <linux/if_ether.h> 23 #include <linux/ieee80211.h> 24 #include <linux/net.h> 25 #include <net/regulatory.h> 26 27 /** 28 * DOC: Introduction 29 * 30 * cfg80211 is the configuration API for 802.11 devices in Linux. It bridges 31 * userspace and drivers, and offers some utility functionality associated 32 * with 802.11. cfg80211 must, directly or indirectly via mac80211, be used 33 * by all modern wireless drivers in Linux, so that they offer a consistent 34 * API through nl80211. For backward compatibility, cfg80211 also offers 35 * wireless extensions to userspace, but hides them from drivers completely. 36 * 37 * Additionally, cfg80211 contains code to help enforce regulatory spectrum 38 * use restrictions. 39 */ 40 41 42 /** 43 * DOC: Device registration 44 * 45 * In order for a driver to use cfg80211, it must register the hardware device 46 * with cfg80211. This happens through a number of hardware capability structs 47 * described below. 48 * 49 * The fundamental structure for each device is the 'wiphy', of which each 50 * instance describes a physical wireless device connected to the system. Each 51 * such wiphy can have zero, one, or many virtual interfaces associated with 52 * it, which need to be identified as such by pointing the network interface's 53 * @ieee80211_ptr pointer to a &struct wireless_dev which further describes 54 * the wireless part of the interface, normally this struct is embedded in the 55 * network interface's private data area. Drivers can optionally allow creating 56 * or destroying virtual interfaces on the fly, but without at least one or the 57 * ability to create some the wireless device isn't useful. 58 * 59 * Each wiphy structure contains device capability information, and also has 60 * a pointer to the various operations the driver offers. The definitions and 61 * structures here describe these capabilities in detail. 62 */ 63 64 struct wiphy; 65 66 /* 67 * wireless hardware capability structures 68 */ 69 70 /** 71 * enum ieee80211_channel_flags - channel flags 72 * 73 * Channel flags set by the regulatory control code. 74 * 75 * @IEEE80211_CHAN_DISABLED: This channel is disabled. 76 * @IEEE80211_CHAN_NO_IR: do not initiate radiation, this includes 77 * sending probe requests or beaconing. 78 * @IEEE80211_CHAN_RADAR: Radar detection is required on this channel. 79 * @IEEE80211_CHAN_NO_HT40PLUS: extension channel above this channel 80 * is not permitted. 81 * @IEEE80211_CHAN_NO_HT40MINUS: extension channel below this channel 82 * is not permitted. 83 * @IEEE80211_CHAN_NO_OFDM: OFDM is not allowed on this channel. 84 * @IEEE80211_CHAN_NO_80MHZ: If the driver supports 80 MHz on the band, 85 * this flag indicates that an 80 MHz channel cannot use this 86 * channel as the control or any of the secondary channels. 87 * This may be due to the driver or due to regulatory bandwidth 88 * restrictions. 89 * @IEEE80211_CHAN_NO_160MHZ: If the driver supports 160 MHz on the band, 90 * this flag indicates that an 160 MHz channel cannot use this 91 * channel as the control or any of the secondary channels. 92 * This may be due to the driver or due to regulatory bandwidth 93 * restrictions. 94 * @IEEE80211_CHAN_INDOOR_ONLY: see %NL80211_FREQUENCY_ATTR_INDOOR_ONLY 95 * @IEEE80211_CHAN_IR_CONCURRENT: see %NL80211_FREQUENCY_ATTR_IR_CONCURRENT 96 * @IEEE80211_CHAN_NO_20MHZ: 20 MHz bandwidth is not permitted 97 * on this channel. 98 * @IEEE80211_CHAN_NO_10MHZ: 10 MHz bandwidth is not permitted 99 * on this channel. 100 * 101 */ 102 enum ieee80211_channel_flags { 103 IEEE80211_CHAN_DISABLED = 1<<0, 104 IEEE80211_CHAN_NO_IR = 1<<1, 105 /* hole at 1<<2 */ 106 IEEE80211_CHAN_RADAR = 1<<3, 107 IEEE80211_CHAN_NO_HT40PLUS = 1<<4, 108 IEEE80211_CHAN_NO_HT40MINUS = 1<<5, 109 IEEE80211_CHAN_NO_OFDM = 1<<6, 110 IEEE80211_CHAN_NO_80MHZ = 1<<7, 111 IEEE80211_CHAN_NO_160MHZ = 1<<8, 112 IEEE80211_CHAN_INDOOR_ONLY = 1<<9, 113 IEEE80211_CHAN_IR_CONCURRENT = 1<<10, 114 IEEE80211_CHAN_NO_20MHZ = 1<<11, 115 IEEE80211_CHAN_NO_10MHZ = 1<<12, 116 }; 117 118 #define IEEE80211_CHAN_NO_HT40 \ 119 (IEEE80211_CHAN_NO_HT40PLUS | IEEE80211_CHAN_NO_HT40MINUS) 120 121 #define IEEE80211_DFS_MIN_CAC_TIME_MS 60000 122 #define IEEE80211_DFS_MIN_NOP_TIME_MS (30 * 60 * 1000) 123 124 /** 125 * struct ieee80211_channel - channel definition 126 * 127 * This structure describes a single channel for use 128 * with cfg80211. 129 * 130 * @center_freq: center frequency in MHz 131 * @hw_value: hardware-specific value for the channel 132 * @flags: channel flags from &enum ieee80211_channel_flags. 133 * @orig_flags: channel flags at registration time, used by regulatory 134 * code to support devices with additional restrictions 135 * @band: band this channel belongs to. 136 * @max_antenna_gain: maximum antenna gain in dBi 137 * @max_power: maximum transmission power (in dBm) 138 * @max_reg_power: maximum regulatory transmission power (in dBm) 139 * @beacon_found: helper to regulatory code to indicate when a beacon 140 * has been found on this channel. Use regulatory_hint_found_beacon() 141 * to enable this, this is useful only on 5 GHz band. 142 * @orig_mag: internal use 143 * @orig_mpwr: internal use 144 * @dfs_state: current state of this channel. Only relevant if radar is required 145 * on this channel. 146 * @dfs_state_entered: timestamp (jiffies) when the dfs state was entered. 147 * @dfs_cac_ms: DFS CAC time in milliseconds, this is valid for DFS channels. 148 */ 149 struct ieee80211_channel { 150 enum nl80211_band band; 151 u16 center_freq; 152 u16 hw_value; 153 u32 flags; 154 int max_antenna_gain; 155 int max_power; 156 int max_reg_power; 157 bool beacon_found; 158 u32 orig_flags; 159 int orig_mag, orig_mpwr; 160 enum nl80211_dfs_state dfs_state; 161 unsigned long dfs_state_entered; 162 unsigned int dfs_cac_ms; 163 }; 164 165 /** 166 * enum ieee80211_rate_flags - rate flags 167 * 168 * Hardware/specification flags for rates. These are structured 169 * in a way that allows using the same bitrate structure for 170 * different bands/PHY modes. 171 * 172 * @IEEE80211_RATE_SHORT_PREAMBLE: Hardware can send with short 173 * preamble on this bitrate; only relevant in 2.4GHz band and 174 * with CCK rates. 175 * @IEEE80211_RATE_MANDATORY_A: This bitrate is a mandatory rate 176 * when used with 802.11a (on the 5 GHz band); filled by the 177 * core code when registering the wiphy. 178 * @IEEE80211_RATE_MANDATORY_B: This bitrate is a mandatory rate 179 * when used with 802.11b (on the 2.4 GHz band); filled by the 180 * core code when registering the wiphy. 181 * @IEEE80211_RATE_MANDATORY_G: This bitrate is a mandatory rate 182 * when used with 802.11g (on the 2.4 GHz band); filled by the 183 * core code when registering the wiphy. 184 * @IEEE80211_RATE_ERP_G: This is an ERP rate in 802.11g mode. 185 * @IEEE80211_RATE_SUPPORTS_5MHZ: Rate can be used in 5 MHz mode 186 * @IEEE80211_RATE_SUPPORTS_10MHZ: Rate can be used in 10 MHz mode 187 */ 188 enum ieee80211_rate_flags { 189 IEEE80211_RATE_SHORT_PREAMBLE = 1<<0, 190 IEEE80211_RATE_MANDATORY_A = 1<<1, 191 IEEE80211_RATE_MANDATORY_B = 1<<2, 192 IEEE80211_RATE_MANDATORY_G = 1<<3, 193 IEEE80211_RATE_ERP_G = 1<<4, 194 IEEE80211_RATE_SUPPORTS_5MHZ = 1<<5, 195 IEEE80211_RATE_SUPPORTS_10MHZ = 1<<6, 196 }; 197 198 /** 199 * enum ieee80211_bss_type - BSS type filter 200 * 201 * @IEEE80211_BSS_TYPE_ESS: Infrastructure BSS 202 * @IEEE80211_BSS_TYPE_PBSS: Personal BSS 203 * @IEEE80211_BSS_TYPE_IBSS: Independent BSS 204 * @IEEE80211_BSS_TYPE_MBSS: Mesh BSS 205 * @IEEE80211_BSS_TYPE_ANY: Wildcard value for matching any BSS type 206 */ 207 enum ieee80211_bss_type { 208 IEEE80211_BSS_TYPE_ESS, 209 IEEE80211_BSS_TYPE_PBSS, 210 IEEE80211_BSS_TYPE_IBSS, 211 IEEE80211_BSS_TYPE_MBSS, 212 IEEE80211_BSS_TYPE_ANY 213 }; 214 215 /** 216 * enum ieee80211_privacy - BSS privacy filter 217 * 218 * @IEEE80211_PRIVACY_ON: privacy bit set 219 * @IEEE80211_PRIVACY_OFF: privacy bit clear 220 * @IEEE80211_PRIVACY_ANY: Wildcard value for matching any privacy setting 221 */ 222 enum ieee80211_privacy { 223 IEEE80211_PRIVACY_ON, 224 IEEE80211_PRIVACY_OFF, 225 IEEE80211_PRIVACY_ANY 226 }; 227 228 #define IEEE80211_PRIVACY(x) \ 229 ((x) ? IEEE80211_PRIVACY_ON : IEEE80211_PRIVACY_OFF) 230 231 /** 232 * struct ieee80211_rate - bitrate definition 233 * 234 * This structure describes a bitrate that an 802.11 PHY can 235 * operate with. The two values @hw_value and @hw_value_short 236 * are only for driver use when pointers to this structure are 237 * passed around. 238 * 239 * @flags: rate-specific flags 240 * @bitrate: bitrate in units of 100 Kbps 241 * @hw_value: driver/hardware value for this rate 242 * @hw_value_short: driver/hardware value for this rate when 243 * short preamble is used 244 */ 245 struct ieee80211_rate { 246 u32 flags; 247 u16 bitrate; 248 u16 hw_value, hw_value_short; 249 }; 250 251 /** 252 * struct ieee80211_sta_ht_cap - STA's HT capabilities 253 * 254 * This structure describes most essential parameters needed 255 * to describe 802.11n HT capabilities for an STA. 256 * 257 * @ht_supported: is HT supported by the STA 258 * @cap: HT capabilities map as described in 802.11n spec 259 * @ampdu_factor: Maximum A-MPDU length factor 260 * @ampdu_density: Minimum A-MPDU spacing 261 * @mcs: Supported MCS rates 262 */ 263 struct ieee80211_sta_ht_cap { 264 u16 cap; /* use IEEE80211_HT_CAP_ */ 265 bool ht_supported; 266 u8 ampdu_factor; 267 u8 ampdu_density; 268 struct ieee80211_mcs_info mcs; 269 }; 270 271 /** 272 * struct ieee80211_sta_vht_cap - STA's VHT capabilities 273 * 274 * This structure describes most essential parameters needed 275 * to describe 802.11ac VHT capabilities for an STA. 276 * 277 * @vht_supported: is VHT supported by the STA 278 * @cap: VHT capabilities map as described in 802.11ac spec 279 * @vht_mcs: Supported VHT MCS rates 280 */ 281 struct ieee80211_sta_vht_cap { 282 bool vht_supported; 283 u32 cap; /* use IEEE80211_VHT_CAP_ */ 284 struct ieee80211_vht_mcs_info vht_mcs; 285 }; 286 287 /** 288 * struct ieee80211_supported_band - frequency band definition 289 * 290 * This structure describes a frequency band a wiphy 291 * is able to operate in. 292 * 293 * @channels: Array of channels the hardware can operate in 294 * in this band. 295 * @band: the band this structure represents 296 * @n_channels: Number of channels in @channels 297 * @bitrates: Array of bitrates the hardware can operate with 298 * in this band. Must be sorted to give a valid "supported 299 * rates" IE, i.e. CCK rates first, then OFDM. 300 * @n_bitrates: Number of bitrates in @bitrates 301 * @ht_cap: HT capabilities in this band 302 * @vht_cap: VHT capabilities in this band 303 */ 304 struct ieee80211_supported_band { 305 struct ieee80211_channel *channels; 306 struct ieee80211_rate *bitrates; 307 enum nl80211_band band; 308 int n_channels; 309 int n_bitrates; 310 struct ieee80211_sta_ht_cap ht_cap; 311 struct ieee80211_sta_vht_cap vht_cap; 312 }; 313 314 /* 315 * Wireless hardware/device configuration structures and methods 316 */ 317 318 /** 319 * DOC: Actions and configuration 320 * 321 * Each wireless device and each virtual interface offer a set of configuration 322 * operations and other actions that are invoked by userspace. Each of these 323 * actions is described in the operations structure, and the parameters these 324 * operations use are described separately. 325 * 326 * Additionally, some operations are asynchronous and expect to get status 327 * information via some functions that drivers need to call. 328 * 329 * Scanning and BSS list handling with its associated functionality is described 330 * in a separate chapter. 331 */ 332 333 /** 334 * struct vif_params - describes virtual interface parameters 335 * @use_4addr: use 4-address frames 336 * @macaddr: address to use for this virtual interface. 337 * If this parameter is set to zero address the driver may 338 * determine the address as needed. 339 * This feature is only fully supported by drivers that enable the 340 * %NL80211_FEATURE_MAC_ON_CREATE flag. Others may support creating 341 ** only p2p devices with specified MAC. 342 */ 343 struct vif_params { 344 int use_4addr; 345 u8 macaddr[ETH_ALEN]; 346 }; 347 348 /** 349 * struct key_params - key information 350 * 351 * Information about a key 352 * 353 * @key: key material 354 * @key_len: length of key material 355 * @cipher: cipher suite selector 356 * @seq: sequence counter (IV/PN) for TKIP and CCMP keys, only used 357 * with the get_key() callback, must be in little endian, 358 * length given by @seq_len. 359 * @seq_len: length of @seq. 360 */ 361 struct key_params { 362 const u8 *key; 363 const u8 *seq; 364 int key_len; 365 int seq_len; 366 u32 cipher; 367 }; 368 369 /** 370 * struct cfg80211_chan_def - channel definition 371 * @chan: the (control) channel 372 * @width: channel width 373 * @center_freq1: center frequency of first segment 374 * @center_freq2: center frequency of second segment 375 * (only with 80+80 MHz) 376 */ 377 struct cfg80211_chan_def { 378 struct ieee80211_channel *chan; 379 enum nl80211_chan_width width; 380 u32 center_freq1; 381 u32 center_freq2; 382 }; 383 384 /** 385 * cfg80211_get_chandef_type - return old channel type from chandef 386 * @chandef: the channel definition 387 * 388 * Return: The old channel type (NOHT, HT20, HT40+/-) from a given 389 * chandef, which must have a bandwidth allowing this conversion. 390 */ 391 static inline enum nl80211_channel_type 392 cfg80211_get_chandef_type(const struct cfg80211_chan_def *chandef) 393 { 394 switch (chandef->width) { 395 case NL80211_CHAN_WIDTH_20_NOHT: 396 return NL80211_CHAN_NO_HT; 397 case NL80211_CHAN_WIDTH_20: 398 return NL80211_CHAN_HT20; 399 case NL80211_CHAN_WIDTH_40: 400 if (chandef->center_freq1 > chandef->chan->center_freq) 401 return NL80211_CHAN_HT40PLUS; 402 return NL80211_CHAN_HT40MINUS; 403 default: 404 WARN_ON(1); 405 return NL80211_CHAN_NO_HT; 406 } 407 } 408 409 /** 410 * cfg80211_chandef_create - create channel definition using channel type 411 * @chandef: the channel definition struct to fill 412 * @channel: the control channel 413 * @chantype: the channel type 414 * 415 * Given a channel type, create a channel definition. 416 */ 417 void cfg80211_chandef_create(struct cfg80211_chan_def *chandef, 418 struct ieee80211_channel *channel, 419 enum nl80211_channel_type chantype); 420 421 /** 422 * cfg80211_chandef_identical - check if two channel definitions are identical 423 * @chandef1: first channel definition 424 * @chandef2: second channel definition 425 * 426 * Return: %true if the channels defined by the channel definitions are 427 * identical, %false otherwise. 428 */ 429 static inline bool 430 cfg80211_chandef_identical(const struct cfg80211_chan_def *chandef1, 431 const struct cfg80211_chan_def *chandef2) 432 { 433 return (chandef1->chan == chandef2->chan && 434 chandef1->width == chandef2->width && 435 chandef1->center_freq1 == chandef2->center_freq1 && 436 chandef1->center_freq2 == chandef2->center_freq2); 437 } 438 439 /** 440 * cfg80211_chandef_compatible - check if two channel definitions are compatible 441 * @chandef1: first channel definition 442 * @chandef2: second channel definition 443 * 444 * Return: %NULL if the given channel definitions are incompatible, 445 * chandef1 or chandef2 otherwise. 446 */ 447 const struct cfg80211_chan_def * 448 cfg80211_chandef_compatible(const struct cfg80211_chan_def *chandef1, 449 const struct cfg80211_chan_def *chandef2); 450 451 /** 452 * cfg80211_chandef_valid - check if a channel definition is valid 453 * @chandef: the channel definition to check 454 * Return: %true if the channel definition is valid. %false otherwise. 455 */ 456 bool cfg80211_chandef_valid(const struct cfg80211_chan_def *chandef); 457 458 /** 459 * cfg80211_chandef_usable - check if secondary channels can be used 460 * @wiphy: the wiphy to validate against 461 * @chandef: the channel definition to check 462 * @prohibited_flags: the regulatory channel flags that must not be set 463 * Return: %true if secondary channels are usable. %false otherwise. 464 */ 465 bool cfg80211_chandef_usable(struct wiphy *wiphy, 466 const struct cfg80211_chan_def *chandef, 467 u32 prohibited_flags); 468 469 /** 470 * cfg80211_chandef_dfs_required - checks if radar detection is required 471 * @wiphy: the wiphy to validate against 472 * @chandef: the channel definition to check 473 * @iftype: the interface type as specified in &enum nl80211_iftype 474 * Returns: 475 * 1 if radar detection is required, 0 if it is not, < 0 on error 476 */ 477 int cfg80211_chandef_dfs_required(struct wiphy *wiphy, 478 const struct cfg80211_chan_def *chandef, 479 enum nl80211_iftype iftype); 480 481 /** 482 * ieee80211_chandef_rate_flags - returns rate flags for a channel 483 * 484 * In some channel types, not all rates may be used - for example CCK 485 * rates may not be used in 5/10 MHz channels. 486 * 487 * @chandef: channel definition for the channel 488 * 489 * Returns: rate flags which apply for this channel 490 */ 491 static inline enum ieee80211_rate_flags 492 ieee80211_chandef_rate_flags(struct cfg80211_chan_def *chandef) 493 { 494 switch (chandef->width) { 495 case NL80211_CHAN_WIDTH_5: 496 return IEEE80211_RATE_SUPPORTS_5MHZ; 497 case NL80211_CHAN_WIDTH_10: 498 return IEEE80211_RATE_SUPPORTS_10MHZ; 499 default: 500 break; 501 } 502 return 0; 503 } 504 505 /** 506 * ieee80211_chandef_max_power - maximum transmission power for the chandef 507 * 508 * In some regulations, the transmit power may depend on the configured channel 509 * bandwidth which may be defined as dBm/MHz. This function returns the actual 510 * max_power for non-standard (20 MHz) channels. 511 * 512 * @chandef: channel definition for the channel 513 * 514 * Returns: maximum allowed transmission power in dBm for the chandef 515 */ 516 static inline int 517 ieee80211_chandef_max_power(struct cfg80211_chan_def *chandef) 518 { 519 switch (chandef->width) { 520 case NL80211_CHAN_WIDTH_5: 521 return min(chandef->chan->max_reg_power - 6, 522 chandef->chan->max_power); 523 case NL80211_CHAN_WIDTH_10: 524 return min(chandef->chan->max_reg_power - 3, 525 chandef->chan->max_power); 526 default: 527 break; 528 } 529 return chandef->chan->max_power; 530 } 531 532 /** 533 * enum survey_info_flags - survey information flags 534 * 535 * @SURVEY_INFO_NOISE_DBM: noise (in dBm) was filled in 536 * @SURVEY_INFO_IN_USE: channel is currently being used 537 * @SURVEY_INFO_TIME: active time (in ms) was filled in 538 * @SURVEY_INFO_TIME_BUSY: busy time was filled in 539 * @SURVEY_INFO_TIME_EXT_BUSY: extension channel busy time was filled in 540 * @SURVEY_INFO_TIME_RX: receive time was filled in 541 * @SURVEY_INFO_TIME_TX: transmit time was filled in 542 * @SURVEY_INFO_TIME_SCAN: scan time was filled in 543 * 544 * Used by the driver to indicate which info in &struct survey_info 545 * it has filled in during the get_survey(). 546 */ 547 enum survey_info_flags { 548 SURVEY_INFO_NOISE_DBM = BIT(0), 549 SURVEY_INFO_IN_USE = BIT(1), 550 SURVEY_INFO_TIME = BIT(2), 551 SURVEY_INFO_TIME_BUSY = BIT(3), 552 SURVEY_INFO_TIME_EXT_BUSY = BIT(4), 553 SURVEY_INFO_TIME_RX = BIT(5), 554 SURVEY_INFO_TIME_TX = BIT(6), 555 SURVEY_INFO_TIME_SCAN = BIT(7), 556 }; 557 558 /** 559 * struct survey_info - channel survey response 560 * 561 * @channel: the channel this survey record reports, may be %NULL for a single 562 * record to report global statistics 563 * @filled: bitflag of flags from &enum survey_info_flags 564 * @noise: channel noise in dBm. This and all following fields are 565 * optional 566 * @time: amount of time in ms the radio was turn on (on the channel) 567 * @time_busy: amount of time the primary channel was sensed busy 568 * @time_ext_busy: amount of time the extension channel was sensed busy 569 * @time_rx: amount of time the radio spent receiving data 570 * @time_tx: amount of time the radio spent transmitting data 571 * @time_scan: amount of time the radio spent for scanning 572 * 573 * Used by dump_survey() to report back per-channel survey information. 574 * 575 * This structure can later be expanded with things like 576 * channel duty cycle etc. 577 */ 578 struct survey_info { 579 struct ieee80211_channel *channel; 580 u64 time; 581 u64 time_busy; 582 u64 time_ext_busy; 583 u64 time_rx; 584 u64 time_tx; 585 u64 time_scan; 586 u32 filled; 587 s8 noise; 588 }; 589 590 /** 591 * struct cfg80211_crypto_settings - Crypto settings 592 * @wpa_versions: indicates which, if any, WPA versions are enabled 593 * (from enum nl80211_wpa_versions) 594 * @cipher_group: group key cipher suite (or 0 if unset) 595 * @n_ciphers_pairwise: number of AP supported unicast ciphers 596 * @ciphers_pairwise: unicast key cipher suites 597 * @n_akm_suites: number of AKM suites 598 * @akm_suites: AKM suites 599 * @control_port: Whether user space controls IEEE 802.1X port, i.e., 600 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 601 * required to assume that the port is unauthorized until authorized by 602 * user space. Otherwise, port is marked authorized by default. 603 * @control_port_ethertype: the control port protocol that should be 604 * allowed through even on unauthorized ports 605 * @control_port_no_encrypt: TRUE to prevent encryption of control port 606 * protocol frames. 607 */ 608 struct cfg80211_crypto_settings { 609 u32 wpa_versions; 610 u32 cipher_group; 611 int n_ciphers_pairwise; 612 u32 ciphers_pairwise[NL80211_MAX_NR_CIPHER_SUITES]; 613 int n_akm_suites; 614 u32 akm_suites[NL80211_MAX_NR_AKM_SUITES]; 615 bool control_port; 616 __be16 control_port_ethertype; 617 bool control_port_no_encrypt; 618 }; 619 620 /** 621 * struct cfg80211_beacon_data - beacon data 622 * @head: head portion of beacon (before TIM IE) 623 * or %NULL if not changed 624 * @tail: tail portion of beacon (after TIM IE) 625 * or %NULL if not changed 626 * @head_len: length of @head 627 * @tail_len: length of @tail 628 * @beacon_ies: extra information element(s) to add into Beacon frames or %NULL 629 * @beacon_ies_len: length of beacon_ies in octets 630 * @proberesp_ies: extra information element(s) to add into Probe Response 631 * frames or %NULL 632 * @proberesp_ies_len: length of proberesp_ies in octets 633 * @assocresp_ies: extra information element(s) to add into (Re)Association 634 * Response frames or %NULL 635 * @assocresp_ies_len: length of assocresp_ies in octets 636 * @probe_resp_len: length of probe response template (@probe_resp) 637 * @probe_resp: probe response template (AP mode only) 638 */ 639 struct cfg80211_beacon_data { 640 const u8 *head, *tail; 641 const u8 *beacon_ies; 642 const u8 *proberesp_ies; 643 const u8 *assocresp_ies; 644 const u8 *probe_resp; 645 646 size_t head_len, tail_len; 647 size_t beacon_ies_len; 648 size_t proberesp_ies_len; 649 size_t assocresp_ies_len; 650 size_t probe_resp_len; 651 }; 652 653 struct mac_address { 654 u8 addr[ETH_ALEN]; 655 }; 656 657 /** 658 * struct cfg80211_acl_data - Access control list data 659 * 660 * @acl_policy: ACL policy to be applied on the station's 661 * entry specified by mac_addr 662 * @n_acl_entries: Number of MAC address entries passed 663 * @mac_addrs: List of MAC addresses of stations to be used for ACL 664 */ 665 struct cfg80211_acl_data { 666 enum nl80211_acl_policy acl_policy; 667 int n_acl_entries; 668 669 /* Keep it last */ 670 struct mac_address mac_addrs[]; 671 }; 672 673 /** 674 * struct cfg80211_ap_settings - AP configuration 675 * 676 * Used to configure an AP interface. 677 * 678 * @chandef: defines the channel to use 679 * @beacon: beacon data 680 * @beacon_interval: beacon interval 681 * @dtim_period: DTIM period 682 * @ssid: SSID to be used in the BSS (note: may be %NULL if not provided from 683 * user space) 684 * @ssid_len: length of @ssid 685 * @hidden_ssid: whether to hide the SSID in Beacon/Probe Response frames 686 * @crypto: crypto settings 687 * @privacy: the BSS uses privacy 688 * @auth_type: Authentication type (algorithm) 689 * @smps_mode: SMPS mode 690 * @inactivity_timeout: time in seconds to determine station's inactivity. 691 * @p2p_ctwindow: P2P CT Window 692 * @p2p_opp_ps: P2P opportunistic PS 693 * @acl: ACL configuration used by the drivers which has support for 694 * MAC address based access control 695 * @pbss: If set, start as a PCP instead of AP. Relevant for DMG 696 * networks. 697 */ 698 struct cfg80211_ap_settings { 699 struct cfg80211_chan_def chandef; 700 701 struct cfg80211_beacon_data beacon; 702 703 int beacon_interval, dtim_period; 704 const u8 *ssid; 705 size_t ssid_len; 706 enum nl80211_hidden_ssid hidden_ssid; 707 struct cfg80211_crypto_settings crypto; 708 bool privacy; 709 enum nl80211_auth_type auth_type; 710 enum nl80211_smps_mode smps_mode; 711 int inactivity_timeout; 712 u8 p2p_ctwindow; 713 bool p2p_opp_ps; 714 const struct cfg80211_acl_data *acl; 715 bool pbss; 716 }; 717 718 /** 719 * struct cfg80211_csa_settings - channel switch settings 720 * 721 * Used for channel switch 722 * 723 * @chandef: defines the channel to use after the switch 724 * @beacon_csa: beacon data while performing the switch 725 * @counter_offsets_beacon: offsets of the counters within the beacon (tail) 726 * @counter_offsets_presp: offsets of the counters within the probe response 727 * @n_counter_offsets_beacon: number of csa counters the beacon (tail) 728 * @n_counter_offsets_presp: number of csa counters in the probe response 729 * @beacon_after: beacon data to be used on the new channel 730 * @radar_required: whether radar detection is required on the new channel 731 * @block_tx: whether transmissions should be blocked while changing 732 * @count: number of beacons until switch 733 */ 734 struct cfg80211_csa_settings { 735 struct cfg80211_chan_def chandef; 736 struct cfg80211_beacon_data beacon_csa; 737 const u16 *counter_offsets_beacon; 738 const u16 *counter_offsets_presp; 739 unsigned int n_counter_offsets_beacon; 740 unsigned int n_counter_offsets_presp; 741 struct cfg80211_beacon_data beacon_after; 742 bool radar_required; 743 bool block_tx; 744 u8 count; 745 }; 746 747 /** 748 * enum station_parameters_apply_mask - station parameter values to apply 749 * @STATION_PARAM_APPLY_UAPSD: apply new uAPSD parameters (uapsd_queues, max_sp) 750 * @STATION_PARAM_APPLY_CAPABILITY: apply new capability 751 * @STATION_PARAM_APPLY_PLINK_STATE: apply new plink state 752 * 753 * Not all station parameters have in-band "no change" signalling, 754 * for those that don't these flags will are used. 755 */ 756 enum station_parameters_apply_mask { 757 STATION_PARAM_APPLY_UAPSD = BIT(0), 758 STATION_PARAM_APPLY_CAPABILITY = BIT(1), 759 STATION_PARAM_APPLY_PLINK_STATE = BIT(2), 760 }; 761 762 /** 763 * struct station_parameters - station parameters 764 * 765 * Used to change and create a new station. 766 * 767 * @vlan: vlan interface station should belong to 768 * @supported_rates: supported rates in IEEE 802.11 format 769 * (or NULL for no change) 770 * @supported_rates_len: number of supported rates 771 * @sta_flags_mask: station flags that changed 772 * (bitmask of BIT(NL80211_STA_FLAG_...)) 773 * @sta_flags_set: station flags values 774 * (bitmask of BIT(NL80211_STA_FLAG_...)) 775 * @listen_interval: listen interval or -1 for no change 776 * @aid: AID or zero for no change 777 * @plink_action: plink action to take 778 * @plink_state: set the peer link state for a station 779 * @ht_capa: HT capabilities of station 780 * @vht_capa: VHT capabilities of station 781 * @uapsd_queues: bitmap of queues configured for uapsd. same format 782 * as the AC bitmap in the QoS info field 783 * @max_sp: max Service Period. same format as the MAX_SP in the 784 * QoS info field (but already shifted down) 785 * @sta_modify_mask: bitmap indicating which parameters changed 786 * (for those that don't have a natural "no change" value), 787 * see &enum station_parameters_apply_mask 788 * @local_pm: local link-specific mesh power save mode (no change when set 789 * to unknown) 790 * @capability: station capability 791 * @ext_capab: extended capabilities of the station 792 * @ext_capab_len: number of extended capabilities 793 * @supported_channels: supported channels in IEEE 802.11 format 794 * @supported_channels_len: number of supported channels 795 * @supported_oper_classes: supported oper classes in IEEE 802.11 format 796 * @supported_oper_classes_len: number of supported operating classes 797 * @opmode_notif: operating mode field from Operating Mode Notification 798 * @opmode_notif_used: information if operating mode field is used 799 * @support_p2p_ps: information if station supports P2P PS mechanism 800 */ 801 struct station_parameters { 802 const u8 *supported_rates; 803 struct net_device *vlan; 804 u32 sta_flags_mask, sta_flags_set; 805 u32 sta_modify_mask; 806 int listen_interval; 807 u16 aid; 808 u8 supported_rates_len; 809 u8 plink_action; 810 u8 plink_state; 811 const struct ieee80211_ht_cap *ht_capa; 812 const struct ieee80211_vht_cap *vht_capa; 813 u8 uapsd_queues; 814 u8 max_sp; 815 enum nl80211_mesh_power_mode local_pm; 816 u16 capability; 817 const u8 *ext_capab; 818 u8 ext_capab_len; 819 const u8 *supported_channels; 820 u8 supported_channels_len; 821 const u8 *supported_oper_classes; 822 u8 supported_oper_classes_len; 823 u8 opmode_notif; 824 bool opmode_notif_used; 825 int support_p2p_ps; 826 }; 827 828 /** 829 * struct station_del_parameters - station deletion parameters 830 * 831 * Used to delete a station entry (or all stations). 832 * 833 * @mac: MAC address of the station to remove or NULL to remove all stations 834 * @subtype: Management frame subtype to use for indicating removal 835 * (10 = Disassociation, 12 = Deauthentication) 836 * @reason_code: Reason code for the Disassociation/Deauthentication frame 837 */ 838 struct station_del_parameters { 839 const u8 *mac; 840 u8 subtype; 841 u16 reason_code; 842 }; 843 844 /** 845 * enum cfg80211_station_type - the type of station being modified 846 * @CFG80211_STA_AP_CLIENT: client of an AP interface 847 * @CFG80211_STA_AP_CLIENT_UNASSOC: client of an AP interface that is still 848 * unassociated (update properties for this type of client is permitted) 849 * @CFG80211_STA_AP_MLME_CLIENT: client of an AP interface that has 850 * the AP MLME in the device 851 * @CFG80211_STA_AP_STA: AP station on managed interface 852 * @CFG80211_STA_IBSS: IBSS station 853 * @CFG80211_STA_TDLS_PEER_SETUP: TDLS peer on managed interface (dummy entry 854 * while TDLS setup is in progress, it moves out of this state when 855 * being marked authorized; use this only if TDLS with external setup is 856 * supported/used) 857 * @CFG80211_STA_TDLS_PEER_ACTIVE: TDLS peer on managed interface (active 858 * entry that is operating, has been marked authorized by userspace) 859 * @CFG80211_STA_MESH_PEER_KERNEL: peer on mesh interface (kernel managed) 860 * @CFG80211_STA_MESH_PEER_USER: peer on mesh interface (user managed) 861 */ 862 enum cfg80211_station_type { 863 CFG80211_STA_AP_CLIENT, 864 CFG80211_STA_AP_CLIENT_UNASSOC, 865 CFG80211_STA_AP_MLME_CLIENT, 866 CFG80211_STA_AP_STA, 867 CFG80211_STA_IBSS, 868 CFG80211_STA_TDLS_PEER_SETUP, 869 CFG80211_STA_TDLS_PEER_ACTIVE, 870 CFG80211_STA_MESH_PEER_KERNEL, 871 CFG80211_STA_MESH_PEER_USER, 872 }; 873 874 /** 875 * cfg80211_check_station_change - validate parameter changes 876 * @wiphy: the wiphy this operates on 877 * @params: the new parameters for a station 878 * @statype: the type of station being modified 879 * 880 * Utility function for the @change_station driver method. Call this function 881 * with the appropriate station type looking up the station (and checking that 882 * it exists). It will verify whether the station change is acceptable, and if 883 * not will return an error code. Note that it may modify the parameters for 884 * backward compatibility reasons, so don't use them before calling this. 885 */ 886 int cfg80211_check_station_change(struct wiphy *wiphy, 887 struct station_parameters *params, 888 enum cfg80211_station_type statype); 889 890 /** 891 * enum station_info_rate_flags - bitrate info flags 892 * 893 * Used by the driver to indicate the specific rate transmission 894 * type for 802.11n transmissions. 895 * 896 * @RATE_INFO_FLAGS_MCS: mcs field filled with HT MCS 897 * @RATE_INFO_FLAGS_VHT_MCS: mcs field filled with VHT MCS 898 * @RATE_INFO_FLAGS_SHORT_GI: 400ns guard interval 899 * @RATE_INFO_FLAGS_60G: 60GHz MCS 900 */ 901 enum rate_info_flags { 902 RATE_INFO_FLAGS_MCS = BIT(0), 903 RATE_INFO_FLAGS_VHT_MCS = BIT(1), 904 RATE_INFO_FLAGS_SHORT_GI = BIT(2), 905 RATE_INFO_FLAGS_60G = BIT(3), 906 }; 907 908 /** 909 * enum rate_info_bw - rate bandwidth information 910 * 911 * Used by the driver to indicate the rate bandwidth. 912 * 913 * @RATE_INFO_BW_5: 5 MHz bandwidth 914 * @RATE_INFO_BW_10: 10 MHz bandwidth 915 * @RATE_INFO_BW_20: 20 MHz bandwidth 916 * @RATE_INFO_BW_40: 40 MHz bandwidth 917 * @RATE_INFO_BW_80: 80 MHz bandwidth 918 * @RATE_INFO_BW_160: 160 MHz bandwidth 919 */ 920 enum rate_info_bw { 921 RATE_INFO_BW_5, 922 RATE_INFO_BW_10, 923 RATE_INFO_BW_20, 924 RATE_INFO_BW_40, 925 RATE_INFO_BW_80, 926 RATE_INFO_BW_160, 927 }; 928 929 /** 930 * struct rate_info - bitrate information 931 * 932 * Information about a receiving or transmitting bitrate 933 * 934 * @flags: bitflag of flags from &enum rate_info_flags 935 * @mcs: mcs index if struct describes a 802.11n bitrate 936 * @legacy: bitrate in 100kbit/s for 802.11abg 937 * @nss: number of streams (VHT only) 938 * @bw: bandwidth (from &enum rate_info_bw) 939 */ 940 struct rate_info { 941 u8 flags; 942 u8 mcs; 943 u16 legacy; 944 u8 nss; 945 u8 bw; 946 }; 947 948 /** 949 * enum station_info_rate_flags - bitrate info flags 950 * 951 * Used by the driver to indicate the specific rate transmission 952 * type for 802.11n transmissions. 953 * 954 * @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled 955 * @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled 956 * @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled 957 */ 958 enum bss_param_flags { 959 BSS_PARAM_FLAGS_CTS_PROT = 1<<0, 960 BSS_PARAM_FLAGS_SHORT_PREAMBLE = 1<<1, 961 BSS_PARAM_FLAGS_SHORT_SLOT_TIME = 1<<2, 962 }; 963 964 /** 965 * struct sta_bss_parameters - BSS parameters for the attached station 966 * 967 * Information about the currently associated BSS 968 * 969 * @flags: bitflag of flags from &enum bss_param_flags 970 * @dtim_period: DTIM period for the BSS 971 * @beacon_interval: beacon interval 972 */ 973 struct sta_bss_parameters { 974 u8 flags; 975 u8 dtim_period; 976 u16 beacon_interval; 977 }; 978 979 /** 980 * struct cfg80211_tid_stats - per-TID statistics 981 * @filled: bitmap of flags using the bits of &enum nl80211_tid_stats to 982 * indicate the relevant values in this struct are filled 983 * @rx_msdu: number of received MSDUs 984 * @tx_msdu: number of (attempted) transmitted MSDUs 985 * @tx_msdu_retries: number of retries (not counting the first) for 986 * transmitted MSDUs 987 * @tx_msdu_failed: number of failed transmitted MSDUs 988 */ 989 struct cfg80211_tid_stats { 990 u32 filled; 991 u64 rx_msdu; 992 u64 tx_msdu; 993 u64 tx_msdu_retries; 994 u64 tx_msdu_failed; 995 }; 996 997 #define IEEE80211_MAX_CHAINS 4 998 999 /** 1000 * struct station_info - station information 1001 * 1002 * Station information filled by driver for get_station() and dump_station. 1003 * 1004 * @filled: bitflag of flags using the bits of &enum nl80211_sta_info to 1005 * indicate the relevant values in this struct for them 1006 * @connected_time: time(in secs) since a station is last connected 1007 * @inactive_time: time since last station activity (tx/rx) in milliseconds 1008 * @rx_bytes: bytes (size of MPDUs) received from this station 1009 * @tx_bytes: bytes (size of MPDUs) transmitted to this station 1010 * @llid: mesh local link id 1011 * @plid: mesh peer link id 1012 * @plink_state: mesh peer link state 1013 * @signal: The signal strength, type depends on the wiphy's signal_type. 1014 * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. 1015 * @signal_avg: Average signal strength, type depends on the wiphy's signal_type. 1016 * For CFG80211_SIGNAL_TYPE_MBM, value is expressed in _dBm_. 1017 * @chains: bitmask for filled values in @chain_signal, @chain_signal_avg 1018 * @chain_signal: per-chain signal strength of last received packet in dBm 1019 * @chain_signal_avg: per-chain signal strength average in dBm 1020 * @txrate: current unicast bitrate from this station 1021 * @rxrate: current unicast bitrate to this station 1022 * @rx_packets: packets (MSDUs & MMPDUs) received from this station 1023 * @tx_packets: packets (MSDUs & MMPDUs) transmitted to this station 1024 * @tx_retries: cumulative retry counts (MPDUs) 1025 * @tx_failed: number of failed transmissions (MPDUs) (retries exceeded, no ACK) 1026 * @rx_dropped_misc: Dropped for un-specified reason. 1027 * @bss_param: current BSS parameters 1028 * @generation: generation number for nl80211 dumps. 1029 * This number should increase every time the list of stations 1030 * changes, i.e. when a station is added or removed, so that 1031 * userspace can tell whether it got a consistent snapshot. 1032 * @assoc_req_ies: IEs from (Re)Association Request. 1033 * This is used only when in AP mode with drivers that do not use 1034 * user space MLME/SME implementation. The information is provided for 1035 * the cfg80211_new_sta() calls to notify user space of the IEs. 1036 * @assoc_req_ies_len: Length of assoc_req_ies buffer in octets. 1037 * @sta_flags: station flags mask & values 1038 * @beacon_loss_count: Number of times beacon loss event has triggered. 1039 * @t_offset: Time offset of the station relative to this host. 1040 * @local_pm: local mesh STA power save mode 1041 * @peer_pm: peer mesh STA power save mode 1042 * @nonpeer_pm: non-peer mesh STA power save mode 1043 * @expected_throughput: expected throughput in kbps (including 802.11 headers) 1044 * towards this station. 1045 * @rx_beacon: number of beacons received from this peer 1046 * @rx_beacon_signal_avg: signal strength average (in dBm) for beacons received 1047 * from this peer 1048 * @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last 1049 * (IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs. 1050 */ 1051 struct station_info { 1052 u32 filled; 1053 u32 connected_time; 1054 u32 inactive_time; 1055 u64 rx_bytes; 1056 u64 tx_bytes; 1057 u16 llid; 1058 u16 plid; 1059 u8 plink_state; 1060 s8 signal; 1061 s8 signal_avg; 1062 1063 u8 chains; 1064 s8 chain_signal[IEEE80211_MAX_CHAINS]; 1065 s8 chain_signal_avg[IEEE80211_MAX_CHAINS]; 1066 1067 struct rate_info txrate; 1068 struct rate_info rxrate; 1069 u32 rx_packets; 1070 u32 tx_packets; 1071 u32 tx_retries; 1072 u32 tx_failed; 1073 u32 rx_dropped_misc; 1074 struct sta_bss_parameters bss_param; 1075 struct nl80211_sta_flag_update sta_flags; 1076 1077 int generation; 1078 1079 const u8 *assoc_req_ies; 1080 size_t assoc_req_ies_len; 1081 1082 u32 beacon_loss_count; 1083 s64 t_offset; 1084 enum nl80211_mesh_power_mode local_pm; 1085 enum nl80211_mesh_power_mode peer_pm; 1086 enum nl80211_mesh_power_mode nonpeer_pm; 1087 1088 u32 expected_throughput; 1089 1090 u64 rx_beacon; 1091 u8 rx_beacon_signal_avg; 1092 struct cfg80211_tid_stats pertid[IEEE80211_NUM_TIDS + 1]; 1093 }; 1094 1095 /** 1096 * cfg80211_get_station - retrieve information about a given station 1097 * @dev: the device where the station is supposed to be connected to 1098 * @mac_addr: the mac address of the station of interest 1099 * @sinfo: pointer to the structure to fill with the information 1100 * 1101 * Returns 0 on success and sinfo is filled with the available information 1102 * otherwise returns a negative error code and the content of sinfo has to be 1103 * considered undefined. 1104 */ 1105 int cfg80211_get_station(struct net_device *dev, const u8 *mac_addr, 1106 struct station_info *sinfo); 1107 1108 /** 1109 * enum monitor_flags - monitor flags 1110 * 1111 * Monitor interface configuration flags. Note that these must be the bits 1112 * according to the nl80211 flags. 1113 * 1114 * @MONITOR_FLAG_FCSFAIL: pass frames with bad FCS 1115 * @MONITOR_FLAG_PLCPFAIL: pass frames with bad PLCP 1116 * @MONITOR_FLAG_CONTROL: pass control frames 1117 * @MONITOR_FLAG_OTHER_BSS: disable BSSID filtering 1118 * @MONITOR_FLAG_COOK_FRAMES: report frames after processing 1119 * @MONITOR_FLAG_ACTIVE: active monitor, ACKs frames on its MAC address 1120 */ 1121 enum monitor_flags { 1122 MONITOR_FLAG_FCSFAIL = 1<<NL80211_MNTR_FLAG_FCSFAIL, 1123 MONITOR_FLAG_PLCPFAIL = 1<<NL80211_MNTR_FLAG_PLCPFAIL, 1124 MONITOR_FLAG_CONTROL = 1<<NL80211_MNTR_FLAG_CONTROL, 1125 MONITOR_FLAG_OTHER_BSS = 1<<NL80211_MNTR_FLAG_OTHER_BSS, 1126 MONITOR_FLAG_COOK_FRAMES = 1<<NL80211_MNTR_FLAG_COOK_FRAMES, 1127 MONITOR_FLAG_ACTIVE = 1<<NL80211_MNTR_FLAG_ACTIVE, 1128 }; 1129 1130 /** 1131 * enum mpath_info_flags - mesh path information flags 1132 * 1133 * Used by the driver to indicate which info in &struct mpath_info it has filled 1134 * in during get_station() or dump_station(). 1135 * 1136 * @MPATH_INFO_FRAME_QLEN: @frame_qlen filled 1137 * @MPATH_INFO_SN: @sn filled 1138 * @MPATH_INFO_METRIC: @metric filled 1139 * @MPATH_INFO_EXPTIME: @exptime filled 1140 * @MPATH_INFO_DISCOVERY_TIMEOUT: @discovery_timeout filled 1141 * @MPATH_INFO_DISCOVERY_RETRIES: @discovery_retries filled 1142 * @MPATH_INFO_FLAGS: @flags filled 1143 */ 1144 enum mpath_info_flags { 1145 MPATH_INFO_FRAME_QLEN = BIT(0), 1146 MPATH_INFO_SN = BIT(1), 1147 MPATH_INFO_METRIC = BIT(2), 1148 MPATH_INFO_EXPTIME = BIT(3), 1149 MPATH_INFO_DISCOVERY_TIMEOUT = BIT(4), 1150 MPATH_INFO_DISCOVERY_RETRIES = BIT(5), 1151 MPATH_INFO_FLAGS = BIT(6), 1152 }; 1153 1154 /** 1155 * struct mpath_info - mesh path information 1156 * 1157 * Mesh path information filled by driver for get_mpath() and dump_mpath(). 1158 * 1159 * @filled: bitfield of flags from &enum mpath_info_flags 1160 * @frame_qlen: number of queued frames for this destination 1161 * @sn: target sequence number 1162 * @metric: metric (cost) of this mesh path 1163 * @exptime: expiration time for the mesh path from now, in msecs 1164 * @flags: mesh path flags 1165 * @discovery_timeout: total mesh path discovery timeout, in msecs 1166 * @discovery_retries: mesh path discovery retries 1167 * @generation: generation number for nl80211 dumps. 1168 * This number should increase every time the list of mesh paths 1169 * changes, i.e. when a station is added or removed, so that 1170 * userspace can tell whether it got a consistent snapshot. 1171 */ 1172 struct mpath_info { 1173 u32 filled; 1174 u32 frame_qlen; 1175 u32 sn; 1176 u32 metric; 1177 u32 exptime; 1178 u32 discovery_timeout; 1179 u8 discovery_retries; 1180 u8 flags; 1181 1182 int generation; 1183 }; 1184 1185 /** 1186 * struct bss_parameters - BSS parameters 1187 * 1188 * Used to change BSS parameters (mainly for AP mode). 1189 * 1190 * @use_cts_prot: Whether to use CTS protection 1191 * (0 = no, 1 = yes, -1 = do not change) 1192 * @use_short_preamble: Whether the use of short preambles is allowed 1193 * (0 = no, 1 = yes, -1 = do not change) 1194 * @use_short_slot_time: Whether the use of short slot time is allowed 1195 * (0 = no, 1 = yes, -1 = do not change) 1196 * @basic_rates: basic rates in IEEE 802.11 format 1197 * (or NULL for no change) 1198 * @basic_rates_len: number of basic rates 1199 * @ap_isolate: do not forward packets between connected stations 1200 * @ht_opmode: HT Operation mode 1201 * (u16 = opmode, -1 = do not change) 1202 * @p2p_ctwindow: P2P CT Window (-1 = no change) 1203 * @p2p_opp_ps: P2P opportunistic PS (-1 = no change) 1204 */ 1205 struct bss_parameters { 1206 int use_cts_prot; 1207 int use_short_preamble; 1208 int use_short_slot_time; 1209 const u8 *basic_rates; 1210 u8 basic_rates_len; 1211 int ap_isolate; 1212 int ht_opmode; 1213 s8 p2p_ctwindow, p2p_opp_ps; 1214 }; 1215 1216 /** 1217 * struct mesh_config - 802.11s mesh configuration 1218 * 1219 * These parameters can be changed while the mesh is active. 1220 * 1221 * @dot11MeshRetryTimeout: the initial retry timeout in millisecond units used 1222 * by the Mesh Peering Open message 1223 * @dot11MeshConfirmTimeout: the initial retry timeout in millisecond units 1224 * used by the Mesh Peering Open message 1225 * @dot11MeshHoldingTimeout: the confirm timeout in millisecond units used by 1226 * the mesh peering management to close a mesh peering 1227 * @dot11MeshMaxPeerLinks: the maximum number of peer links allowed on this 1228 * mesh interface 1229 * @dot11MeshMaxRetries: the maximum number of peer link open retries that can 1230 * be sent to establish a new peer link instance in a mesh 1231 * @dot11MeshTTL: the value of TTL field set at a source mesh STA 1232 * @element_ttl: the value of TTL field set at a mesh STA for path selection 1233 * elements 1234 * @auto_open_plinks: whether we should automatically open peer links when we 1235 * detect compatible mesh peers 1236 * @dot11MeshNbrOffsetMaxNeighbor: the maximum number of neighbors to 1237 * synchronize to for 11s default synchronization method 1238 * @dot11MeshHWMPmaxPREQretries: the number of action frames containing a PREQ 1239 * that an originator mesh STA can send to a particular path target 1240 * @path_refresh_time: how frequently to refresh mesh paths in milliseconds 1241 * @min_discovery_timeout: the minimum length of time to wait until giving up on 1242 * a path discovery in milliseconds 1243 * @dot11MeshHWMPactivePathTimeout: the time (in TUs) for which mesh STAs 1244 * receiving a PREQ shall consider the forwarding information from the 1245 * root to be valid. (TU = time unit) 1246 * @dot11MeshHWMPpreqMinInterval: the minimum interval of time (in TUs) during 1247 * which a mesh STA can send only one action frame containing a PREQ 1248 * element 1249 * @dot11MeshHWMPperrMinInterval: the minimum interval of time (in TUs) during 1250 * which a mesh STA can send only one Action frame containing a PERR 1251 * element 1252 * @dot11MeshHWMPnetDiameterTraversalTime: the interval of time (in TUs) that 1253 * it takes for an HWMP information element to propagate across the mesh 1254 * @dot11MeshHWMPRootMode: the configuration of a mesh STA as root mesh STA 1255 * @dot11MeshHWMPRannInterval: the interval of time (in TUs) between root 1256 * announcements are transmitted 1257 * @dot11MeshGateAnnouncementProtocol: whether to advertise that this mesh 1258 * station has access to a broader network beyond the MBSS. (This is 1259 * missnamed in draft 12.0: dot11MeshGateAnnouncementProtocol set to true 1260 * only means that the station will announce others it's a mesh gate, but 1261 * not necessarily using the gate announcement protocol. Still keeping the 1262 * same nomenclature to be in sync with the spec) 1263 * @dot11MeshForwarding: whether the Mesh STA is forwarding or non-forwarding 1264 * entity (default is TRUE - forwarding entity) 1265 * @rssi_threshold: the threshold for average signal strength of candidate 1266 * station to establish a peer link 1267 * @ht_opmode: mesh HT protection mode 1268 * 1269 * @dot11MeshHWMPactivePathToRootTimeout: The time (in TUs) for which mesh STAs 1270 * receiving a proactive PREQ shall consider the forwarding information to 1271 * the root mesh STA to be valid. 1272 * 1273 * @dot11MeshHWMProotInterval: The interval of time (in TUs) between proactive 1274 * PREQs are transmitted. 1275 * @dot11MeshHWMPconfirmationInterval: The minimum interval of time (in TUs) 1276 * during which a mesh STA can send only one Action frame containing 1277 * a PREQ element for root path confirmation. 1278 * @power_mode: The default mesh power save mode which will be the initial 1279 * setting for new peer links. 1280 * @dot11MeshAwakeWindowDuration: The duration in TUs the STA will remain awake 1281 * after transmitting its beacon. 1282 * @plink_timeout: If no tx activity is seen from a STA we've established 1283 * peering with for longer than this time (in seconds), then remove it 1284 * from the STA's list of peers. Default is 30 minutes. 1285 */ 1286 struct mesh_config { 1287 u16 dot11MeshRetryTimeout; 1288 u16 dot11MeshConfirmTimeout; 1289 u16 dot11MeshHoldingTimeout; 1290 u16 dot11MeshMaxPeerLinks; 1291 u8 dot11MeshMaxRetries; 1292 u8 dot11MeshTTL; 1293 u8 element_ttl; 1294 bool auto_open_plinks; 1295 u32 dot11MeshNbrOffsetMaxNeighbor; 1296 u8 dot11MeshHWMPmaxPREQretries; 1297 u32 path_refresh_time; 1298 u16 min_discovery_timeout; 1299 u32 dot11MeshHWMPactivePathTimeout; 1300 u16 dot11MeshHWMPpreqMinInterval; 1301 u16 dot11MeshHWMPperrMinInterval; 1302 u16 dot11MeshHWMPnetDiameterTraversalTime; 1303 u8 dot11MeshHWMPRootMode; 1304 u16 dot11MeshHWMPRannInterval; 1305 bool dot11MeshGateAnnouncementProtocol; 1306 bool dot11MeshForwarding; 1307 s32 rssi_threshold; 1308 u16 ht_opmode; 1309 u32 dot11MeshHWMPactivePathToRootTimeout; 1310 u16 dot11MeshHWMProotInterval; 1311 u16 dot11MeshHWMPconfirmationInterval; 1312 enum nl80211_mesh_power_mode power_mode; 1313 u16 dot11MeshAwakeWindowDuration; 1314 u32 plink_timeout; 1315 }; 1316 1317 /** 1318 * struct mesh_setup - 802.11s mesh setup configuration 1319 * @chandef: defines the channel to use 1320 * @mesh_id: the mesh ID 1321 * @mesh_id_len: length of the mesh ID, at least 1 and at most 32 bytes 1322 * @sync_method: which synchronization method to use 1323 * @path_sel_proto: which path selection protocol to use 1324 * @path_metric: which metric to use 1325 * @auth_id: which authentication method this mesh is using 1326 * @ie: vendor information elements (optional) 1327 * @ie_len: length of vendor information elements 1328 * @is_authenticated: this mesh requires authentication 1329 * @is_secure: this mesh uses security 1330 * @user_mpm: userspace handles all MPM functions 1331 * @dtim_period: DTIM period to use 1332 * @beacon_interval: beacon interval to use 1333 * @mcast_rate: multicat rate for Mesh Node [6Mbps is the default for 802.11a] 1334 * @basic_rates: basic rates to use when creating the mesh 1335 * 1336 * These parameters are fixed when the mesh is created. 1337 */ 1338 struct mesh_setup { 1339 struct cfg80211_chan_def chandef; 1340 const u8 *mesh_id; 1341 u8 mesh_id_len; 1342 u8 sync_method; 1343 u8 path_sel_proto; 1344 u8 path_metric; 1345 u8 auth_id; 1346 const u8 *ie; 1347 u8 ie_len; 1348 bool is_authenticated; 1349 bool is_secure; 1350 bool user_mpm; 1351 u8 dtim_period; 1352 u16 beacon_interval; 1353 int mcast_rate[NUM_NL80211_BANDS]; 1354 u32 basic_rates; 1355 }; 1356 1357 /** 1358 * struct ocb_setup - 802.11p OCB mode setup configuration 1359 * @chandef: defines the channel to use 1360 * 1361 * These parameters are fixed when connecting to the network 1362 */ 1363 struct ocb_setup { 1364 struct cfg80211_chan_def chandef; 1365 }; 1366 1367 /** 1368 * struct ieee80211_txq_params - TX queue parameters 1369 * @ac: AC identifier 1370 * @txop: Maximum burst time in units of 32 usecs, 0 meaning disabled 1371 * @cwmin: Minimum contention window [a value of the form 2^n-1 in the range 1372 * 1..32767] 1373 * @cwmax: Maximum contention window [a value of the form 2^n-1 in the range 1374 * 1..32767] 1375 * @aifs: Arbitration interframe space [0..255] 1376 */ 1377 struct ieee80211_txq_params { 1378 enum nl80211_ac ac; 1379 u16 txop; 1380 u16 cwmin; 1381 u16 cwmax; 1382 u8 aifs; 1383 }; 1384 1385 /** 1386 * DOC: Scanning and BSS list handling 1387 * 1388 * The scanning process itself is fairly simple, but cfg80211 offers quite 1389 * a bit of helper functionality. To start a scan, the scan operation will 1390 * be invoked with a scan definition. This scan definition contains the 1391 * channels to scan, and the SSIDs to send probe requests for (including the 1392 * wildcard, if desired). A passive scan is indicated by having no SSIDs to 1393 * probe. Additionally, a scan request may contain extra information elements 1394 * that should be added to the probe request. The IEs are guaranteed to be 1395 * well-formed, and will not exceed the maximum length the driver advertised 1396 * in the wiphy structure. 1397 * 1398 * When scanning finds a BSS, cfg80211 needs to be notified of that, because 1399 * it is responsible for maintaining the BSS list; the driver should not 1400 * maintain a list itself. For this notification, various functions exist. 1401 * 1402 * Since drivers do not maintain a BSS list, there are also a number of 1403 * functions to search for a BSS and obtain information about it from the 1404 * BSS structure cfg80211 maintains. The BSS list is also made available 1405 * to userspace. 1406 */ 1407 1408 /** 1409 * struct cfg80211_ssid - SSID description 1410 * @ssid: the SSID 1411 * @ssid_len: length of the ssid 1412 */ 1413 struct cfg80211_ssid { 1414 u8 ssid[IEEE80211_MAX_SSID_LEN]; 1415 u8 ssid_len; 1416 }; 1417 1418 /** 1419 * struct cfg80211_scan_request - scan request description 1420 * 1421 * @ssids: SSIDs to scan for (active scan only) 1422 * @n_ssids: number of SSIDs 1423 * @channels: channels to scan on. 1424 * @n_channels: total number of channels to scan 1425 * @scan_width: channel width for scanning 1426 * @ie: optional information element(s) to add into Probe Request or %NULL 1427 * @ie_len: length of ie in octets 1428 * @flags: bit field of flags controlling operation 1429 * @rates: bitmap of rates to advertise for each band 1430 * @wiphy: the wiphy this was for 1431 * @scan_start: time (in jiffies) when the scan started 1432 * @wdev: the wireless device to scan for 1433 * @aborted: (internal) scan request was notified as aborted 1434 * @notified: (internal) scan request was notified as done or aborted 1435 * @no_cck: used to send probe requests at non CCK rate in 2GHz band 1436 * @mac_addr: MAC address used with randomisation 1437 * @mac_addr_mask: MAC address mask used with randomisation, bits that 1438 * are 0 in the mask should be randomised, bits that are 1 should 1439 * be taken from the @mac_addr 1440 * @bssid: BSSID to scan for (most commonly, the wildcard BSSID) 1441 */ 1442 struct cfg80211_scan_request { 1443 struct cfg80211_ssid *ssids; 1444 int n_ssids; 1445 u32 n_channels; 1446 enum nl80211_bss_scan_width scan_width; 1447 const u8 *ie; 1448 size_t ie_len; 1449 u32 flags; 1450 1451 u32 rates[NUM_NL80211_BANDS]; 1452 1453 struct wireless_dev *wdev; 1454 1455 u8 mac_addr[ETH_ALEN] __aligned(2); 1456 u8 mac_addr_mask[ETH_ALEN] __aligned(2); 1457 u8 bssid[ETH_ALEN] __aligned(2); 1458 1459 /* internal */ 1460 struct wiphy *wiphy; 1461 unsigned long scan_start; 1462 bool aborted, notified; 1463 bool no_cck; 1464 1465 /* keep last */ 1466 struct ieee80211_channel *channels[0]; 1467 }; 1468 1469 static inline void get_random_mask_addr(u8 *buf, const u8 *addr, const u8 *mask) 1470 { 1471 int i; 1472 1473 get_random_bytes(buf, ETH_ALEN); 1474 for (i = 0; i < ETH_ALEN; i++) { 1475 buf[i] &= ~mask[i]; 1476 buf[i] |= addr[i] & mask[i]; 1477 } 1478 } 1479 1480 /** 1481 * struct cfg80211_match_set - sets of attributes to match 1482 * 1483 * @ssid: SSID to be matched; may be zero-length for no match (RSSI only) 1484 * @rssi_thold: don't report scan results below this threshold (in s32 dBm) 1485 */ 1486 struct cfg80211_match_set { 1487 struct cfg80211_ssid ssid; 1488 s32 rssi_thold; 1489 }; 1490 1491 /** 1492 * struct cfg80211_sched_scan_plan - scan plan for scheduled scan 1493 * 1494 * @interval: interval between scheduled scan iterations. In seconds. 1495 * @iterations: number of scan iterations in this scan plan. Zero means 1496 * infinite loop. 1497 * The last scan plan will always have this parameter set to zero, 1498 * all other scan plans will have a finite number of iterations. 1499 */ 1500 struct cfg80211_sched_scan_plan { 1501 u32 interval; 1502 u32 iterations; 1503 }; 1504 1505 /** 1506 * struct cfg80211_sched_scan_request - scheduled scan request description 1507 * 1508 * @ssids: SSIDs to scan for (passed in the probe_reqs in active scans) 1509 * @n_ssids: number of SSIDs 1510 * @n_channels: total number of channels to scan 1511 * @scan_width: channel width for scanning 1512 * @ie: optional information element(s) to add into Probe Request or %NULL 1513 * @ie_len: length of ie in octets 1514 * @flags: bit field of flags controlling operation 1515 * @match_sets: sets of parameters to be matched for a scan result 1516 * entry to be considered valid and to be passed to the host 1517 * (others are filtered out). 1518 * If ommited, all results are passed. 1519 * @n_match_sets: number of match sets 1520 * @wiphy: the wiphy this was for 1521 * @dev: the interface 1522 * @scan_start: start time of the scheduled scan 1523 * @channels: channels to scan 1524 * @min_rssi_thold: for drivers only supporting a single threshold, this 1525 * contains the minimum over all matchsets 1526 * @mac_addr: MAC address used with randomisation 1527 * @mac_addr_mask: MAC address mask used with randomisation, bits that 1528 * are 0 in the mask should be randomised, bits that are 1 should 1529 * be taken from the @mac_addr 1530 * @scan_plans: scan plans to be executed in this scheduled scan. Lowest 1531 * index must be executed first. 1532 * @n_scan_plans: number of scan plans, at least 1. 1533 * @rcu_head: RCU callback used to free the struct 1534 * @owner_nlportid: netlink portid of owner (if this should is a request 1535 * owned by a particular socket) 1536 * @delay: delay in seconds to use before starting the first scan 1537 * cycle. The driver may ignore this parameter and start 1538 * immediately (or at any other time), if this feature is not 1539 * supported. 1540 */ 1541 struct cfg80211_sched_scan_request { 1542 struct cfg80211_ssid *ssids; 1543 int n_ssids; 1544 u32 n_channels; 1545 enum nl80211_bss_scan_width scan_width; 1546 const u8 *ie; 1547 size_t ie_len; 1548 u32 flags; 1549 struct cfg80211_match_set *match_sets; 1550 int n_match_sets; 1551 s32 min_rssi_thold; 1552 u32 delay; 1553 struct cfg80211_sched_scan_plan *scan_plans; 1554 int n_scan_plans; 1555 1556 u8 mac_addr[ETH_ALEN] __aligned(2); 1557 u8 mac_addr_mask[ETH_ALEN] __aligned(2); 1558 1559 /* internal */ 1560 struct wiphy *wiphy; 1561 struct net_device *dev; 1562 unsigned long scan_start; 1563 struct rcu_head rcu_head; 1564 u32 owner_nlportid; 1565 1566 /* keep last */ 1567 struct ieee80211_channel *channels[0]; 1568 }; 1569 1570 /** 1571 * enum cfg80211_signal_type - signal type 1572 * 1573 * @CFG80211_SIGNAL_TYPE_NONE: no signal strength information available 1574 * @CFG80211_SIGNAL_TYPE_MBM: signal strength in mBm (100*dBm) 1575 * @CFG80211_SIGNAL_TYPE_UNSPEC: signal strength, increasing from 0 through 100 1576 */ 1577 enum cfg80211_signal_type { 1578 CFG80211_SIGNAL_TYPE_NONE, 1579 CFG80211_SIGNAL_TYPE_MBM, 1580 CFG80211_SIGNAL_TYPE_UNSPEC, 1581 }; 1582 1583 /** 1584 * struct cfg80211_inform_bss - BSS inform data 1585 * @chan: channel the frame was received on 1586 * @scan_width: scan width that was used 1587 * @signal: signal strength value, according to the wiphy's 1588 * signal type 1589 * @boottime_ns: timestamp (CLOCK_BOOTTIME) when the information was 1590 * received; should match the time when the frame was actually 1591 * received by the device (not just by the host, in case it was 1592 * buffered on the device) and be accurate to about 10ms. 1593 * If the frame isn't buffered, just passing the return value of 1594 * ktime_get_boot_ns() is likely appropriate. 1595 */ 1596 struct cfg80211_inform_bss { 1597 struct ieee80211_channel *chan; 1598 enum nl80211_bss_scan_width scan_width; 1599 s32 signal; 1600 u64 boottime_ns; 1601 }; 1602 1603 /** 1604 * struct cfg80211_bss_ies - BSS entry IE data 1605 * @tsf: TSF contained in the frame that carried these IEs 1606 * @rcu_head: internal use, for freeing 1607 * @len: length of the IEs 1608 * @from_beacon: these IEs are known to come from a beacon 1609 * @data: IE data 1610 */ 1611 struct cfg80211_bss_ies { 1612 u64 tsf; 1613 struct rcu_head rcu_head; 1614 int len; 1615 bool from_beacon; 1616 u8 data[]; 1617 }; 1618 1619 /** 1620 * struct cfg80211_bss - BSS description 1621 * 1622 * This structure describes a BSS (which may also be a mesh network) 1623 * for use in scan results and similar. 1624 * 1625 * @channel: channel this BSS is on 1626 * @scan_width: width of the control channel 1627 * @bssid: BSSID of the BSS 1628 * @beacon_interval: the beacon interval as from the frame 1629 * @capability: the capability field in host byte order 1630 * @ies: the information elements (Note that there is no guarantee that these 1631 * are well-formed!); this is a pointer to either the beacon_ies or 1632 * proberesp_ies depending on whether Probe Response frame has been 1633 * received. It is always non-%NULL. 1634 * @beacon_ies: the information elements from the last Beacon frame 1635 * (implementation note: if @hidden_beacon_bss is set this struct doesn't 1636 * own the beacon_ies, but they're just pointers to the ones from the 1637 * @hidden_beacon_bss struct) 1638 * @proberesp_ies: the information elements from the last Probe Response frame 1639 * @hidden_beacon_bss: in case this BSS struct represents a probe response from 1640 * a BSS that hides the SSID in its beacon, this points to the BSS struct 1641 * that holds the beacon data. @beacon_ies is still valid, of course, and 1642 * points to the same data as hidden_beacon_bss->beacon_ies in that case. 1643 * @signal: signal strength value (type depends on the wiphy's signal_type) 1644 * @priv: private area for driver use, has at least wiphy->bss_priv_size bytes 1645 */ 1646 struct cfg80211_bss { 1647 struct ieee80211_channel *channel; 1648 enum nl80211_bss_scan_width scan_width; 1649 1650 const struct cfg80211_bss_ies __rcu *ies; 1651 const struct cfg80211_bss_ies __rcu *beacon_ies; 1652 const struct cfg80211_bss_ies __rcu *proberesp_ies; 1653 1654 struct cfg80211_bss *hidden_beacon_bss; 1655 1656 s32 signal; 1657 1658 u16 beacon_interval; 1659 u16 capability; 1660 1661 u8 bssid[ETH_ALEN]; 1662 1663 u8 priv[0] __aligned(sizeof(void *)); 1664 }; 1665 1666 /** 1667 * ieee80211_bss_get_ie - find IE with given ID 1668 * @bss: the bss to search 1669 * @ie: the IE ID 1670 * 1671 * Note that the return value is an RCU-protected pointer, so 1672 * rcu_read_lock() must be held when calling this function. 1673 * Return: %NULL if not found. 1674 */ 1675 const u8 *ieee80211_bss_get_ie(struct cfg80211_bss *bss, u8 ie); 1676 1677 1678 /** 1679 * struct cfg80211_auth_request - Authentication request data 1680 * 1681 * This structure provides information needed to complete IEEE 802.11 1682 * authentication. 1683 * 1684 * @bss: The BSS to authenticate with, the callee must obtain a reference 1685 * to it if it needs to keep it. 1686 * @auth_type: Authentication type (algorithm) 1687 * @ie: Extra IEs to add to Authentication frame or %NULL 1688 * @ie_len: Length of ie buffer in octets 1689 * @key_len: length of WEP key for shared key authentication 1690 * @key_idx: index of WEP key for shared key authentication 1691 * @key: WEP key for shared key authentication 1692 * @sae_data: Non-IE data to use with SAE or %NULL. This starts with 1693 * Authentication transaction sequence number field. 1694 * @sae_data_len: Length of sae_data buffer in octets 1695 */ 1696 struct cfg80211_auth_request { 1697 struct cfg80211_bss *bss; 1698 const u8 *ie; 1699 size_t ie_len; 1700 enum nl80211_auth_type auth_type; 1701 const u8 *key; 1702 u8 key_len, key_idx; 1703 const u8 *sae_data; 1704 size_t sae_data_len; 1705 }; 1706 1707 /** 1708 * enum cfg80211_assoc_req_flags - Over-ride default behaviour in association. 1709 * 1710 * @ASSOC_REQ_DISABLE_HT: Disable HT (802.11n) 1711 * @ASSOC_REQ_DISABLE_VHT: Disable VHT 1712 * @ASSOC_REQ_USE_RRM: Declare RRM capability in this association 1713 */ 1714 enum cfg80211_assoc_req_flags { 1715 ASSOC_REQ_DISABLE_HT = BIT(0), 1716 ASSOC_REQ_DISABLE_VHT = BIT(1), 1717 ASSOC_REQ_USE_RRM = BIT(2), 1718 }; 1719 1720 /** 1721 * struct cfg80211_assoc_request - (Re)Association request data 1722 * 1723 * This structure provides information needed to complete IEEE 802.11 1724 * (re)association. 1725 * @bss: The BSS to associate with. If the call is successful the driver is 1726 * given a reference that it must give back to cfg80211_send_rx_assoc() 1727 * or to cfg80211_assoc_timeout(). To ensure proper refcounting, new 1728 * association requests while already associating must be rejected. 1729 * @ie: Extra IEs to add to (Re)Association Request frame or %NULL 1730 * @ie_len: Length of ie buffer in octets 1731 * @use_mfp: Use management frame protection (IEEE 802.11w) in this association 1732 * @crypto: crypto settings 1733 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame. This is used 1734 * to indicate a request to reassociate within the ESS instead of a request 1735 * do the initial association with the ESS. When included, this is set to 1736 * the BSSID of the current association, i.e., to the value that is 1737 * included in the Current AP address field of the Reassociation Request 1738 * frame. 1739 * @flags: See &enum cfg80211_assoc_req_flags 1740 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1741 * will be used in ht_capa. Un-supported values will be ignored. 1742 * @ht_capa_mask: The bits of ht_capa which are to be used. 1743 * @vht_capa: VHT capability override 1744 * @vht_capa_mask: VHT capability mask indicating which fields to use 1745 */ 1746 struct cfg80211_assoc_request { 1747 struct cfg80211_bss *bss; 1748 const u8 *ie, *prev_bssid; 1749 size_t ie_len; 1750 struct cfg80211_crypto_settings crypto; 1751 bool use_mfp; 1752 u32 flags; 1753 struct ieee80211_ht_cap ht_capa; 1754 struct ieee80211_ht_cap ht_capa_mask; 1755 struct ieee80211_vht_cap vht_capa, vht_capa_mask; 1756 }; 1757 1758 /** 1759 * struct cfg80211_deauth_request - Deauthentication request data 1760 * 1761 * This structure provides information needed to complete IEEE 802.11 1762 * deauthentication. 1763 * 1764 * @bssid: the BSSID of the BSS to deauthenticate from 1765 * @ie: Extra IEs to add to Deauthentication frame or %NULL 1766 * @ie_len: Length of ie buffer in octets 1767 * @reason_code: The reason code for the deauthentication 1768 * @local_state_change: if set, change local state only and 1769 * do not set a deauth frame 1770 */ 1771 struct cfg80211_deauth_request { 1772 const u8 *bssid; 1773 const u8 *ie; 1774 size_t ie_len; 1775 u16 reason_code; 1776 bool local_state_change; 1777 }; 1778 1779 /** 1780 * struct cfg80211_disassoc_request - Disassociation request data 1781 * 1782 * This structure provides information needed to complete IEEE 802.11 1783 * disassocation. 1784 * 1785 * @bss: the BSS to disassociate from 1786 * @ie: Extra IEs to add to Disassociation frame or %NULL 1787 * @ie_len: Length of ie buffer in octets 1788 * @reason_code: The reason code for the disassociation 1789 * @local_state_change: This is a request for a local state only, i.e., no 1790 * Disassociation frame is to be transmitted. 1791 */ 1792 struct cfg80211_disassoc_request { 1793 struct cfg80211_bss *bss; 1794 const u8 *ie; 1795 size_t ie_len; 1796 u16 reason_code; 1797 bool local_state_change; 1798 }; 1799 1800 /** 1801 * struct cfg80211_ibss_params - IBSS parameters 1802 * 1803 * This structure defines the IBSS parameters for the join_ibss() 1804 * method. 1805 * 1806 * @ssid: The SSID, will always be non-null. 1807 * @ssid_len: The length of the SSID, will always be non-zero. 1808 * @bssid: Fixed BSSID requested, maybe be %NULL, if set do not 1809 * search for IBSSs with a different BSSID. 1810 * @chandef: defines the channel to use if no other IBSS to join can be found 1811 * @channel_fixed: The channel should be fixed -- do not search for 1812 * IBSSs to join on other channels. 1813 * @ie: information element(s) to include in the beacon 1814 * @ie_len: length of that 1815 * @beacon_interval: beacon interval to use 1816 * @privacy: this is a protected network, keys will be configured 1817 * after joining 1818 * @control_port: whether user space controls IEEE 802.1X port, i.e., 1819 * sets/clears %NL80211_STA_FLAG_AUTHORIZED. If true, the driver is 1820 * required to assume that the port is unauthorized until authorized by 1821 * user space. Otherwise, port is marked authorized by default. 1822 * @userspace_handles_dfs: whether user space controls DFS operation, i.e. 1823 * changes the channel when a radar is detected. This is required 1824 * to operate on DFS channels. 1825 * @basic_rates: bitmap of basic rates to use when creating the IBSS 1826 * @mcast_rate: per-band multicast rate index + 1 (0: disabled) 1827 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1828 * will be used in ht_capa. Un-supported values will be ignored. 1829 * @ht_capa_mask: The bits of ht_capa which are to be used. 1830 */ 1831 struct cfg80211_ibss_params { 1832 const u8 *ssid; 1833 const u8 *bssid; 1834 struct cfg80211_chan_def chandef; 1835 const u8 *ie; 1836 u8 ssid_len, ie_len; 1837 u16 beacon_interval; 1838 u32 basic_rates; 1839 bool channel_fixed; 1840 bool privacy; 1841 bool control_port; 1842 bool userspace_handles_dfs; 1843 int mcast_rate[NUM_NL80211_BANDS]; 1844 struct ieee80211_ht_cap ht_capa; 1845 struct ieee80211_ht_cap ht_capa_mask; 1846 }; 1847 1848 /** 1849 * struct cfg80211_bss_select_adjust - BSS selection with RSSI adjustment. 1850 * 1851 * @band: band of BSS which should match for RSSI level adjustment. 1852 * @delta: value of RSSI level adjustment. 1853 */ 1854 struct cfg80211_bss_select_adjust { 1855 enum nl80211_band band; 1856 s8 delta; 1857 }; 1858 1859 /** 1860 * struct cfg80211_bss_selection - connection parameters for BSS selection. 1861 * 1862 * @behaviour: requested BSS selection behaviour. 1863 * @param: parameters for requestion behaviour. 1864 * @band_pref: preferred band for %NL80211_BSS_SELECT_ATTR_BAND_PREF. 1865 * @adjust: parameters for %NL80211_BSS_SELECT_ATTR_RSSI_ADJUST. 1866 */ 1867 struct cfg80211_bss_selection { 1868 enum nl80211_bss_select_attr behaviour; 1869 union { 1870 enum nl80211_band band_pref; 1871 struct cfg80211_bss_select_adjust adjust; 1872 } param; 1873 }; 1874 1875 /** 1876 * struct cfg80211_connect_params - Connection parameters 1877 * 1878 * This structure provides information needed to complete IEEE 802.11 1879 * authentication and association. 1880 * 1881 * @channel: The channel to use or %NULL if not specified (auto-select based 1882 * on scan results) 1883 * @channel_hint: The channel of the recommended BSS for initial connection or 1884 * %NULL if not specified 1885 * @bssid: The AP BSSID or %NULL if not specified (auto-select based on scan 1886 * results) 1887 * @bssid_hint: The recommended AP BSSID for initial connection to the BSS or 1888 * %NULL if not specified. Unlike the @bssid parameter, the driver is 1889 * allowed to ignore this @bssid_hint if it has knowledge of a better BSS 1890 * to use. 1891 * @ssid: SSID 1892 * @ssid_len: Length of ssid in octets 1893 * @auth_type: Authentication type (algorithm) 1894 * @ie: IEs for association request 1895 * @ie_len: Length of assoc_ie in octets 1896 * @privacy: indicates whether privacy-enabled APs should be used 1897 * @mfp: indicate whether management frame protection is used 1898 * @crypto: crypto settings 1899 * @key_len: length of WEP key for shared key authentication 1900 * @key_idx: index of WEP key for shared key authentication 1901 * @key: WEP key for shared key authentication 1902 * @flags: See &enum cfg80211_assoc_req_flags 1903 * @bg_scan_period: Background scan period in seconds 1904 * or -1 to indicate that default value is to be used. 1905 * @ht_capa: HT Capabilities over-rides. Values set in ht_capa_mask 1906 * will be used in ht_capa. Un-supported values will be ignored. 1907 * @ht_capa_mask: The bits of ht_capa which are to be used. 1908 * @vht_capa: VHT Capability overrides 1909 * @vht_capa_mask: The bits of vht_capa which are to be used. 1910 * @pbss: if set, connect to a PCP instead of AP. Valid for DMG 1911 * networks. 1912 * @bss_select: criteria to be used for BSS selection. 1913 * @prev_bssid: previous BSSID, if not %NULL use reassociate frame. This is used 1914 * to indicate a request to reassociate within the ESS instead of a request 1915 * do the initial association with the ESS. When included, this is set to 1916 * the BSSID of the current association, i.e., to the value that is 1917 * included in the Current AP address field of the Reassociation Request 1918 * frame. 1919 */ 1920 struct cfg80211_connect_params { 1921 struct ieee80211_channel *channel; 1922 struct ieee80211_channel *channel_hint; 1923 const u8 *bssid; 1924 const u8 *bssid_hint; 1925 const u8 *ssid; 1926 size_t ssid_len; 1927 enum nl80211_auth_type auth_type; 1928 const u8 *ie; 1929 size_t ie_len; 1930 bool privacy; 1931 enum nl80211_mfp mfp; 1932 struct cfg80211_crypto_settings crypto; 1933 const u8 *key; 1934 u8 key_len, key_idx; 1935 u32 flags; 1936 int bg_scan_period; 1937 struct ieee80211_ht_cap ht_capa; 1938 struct ieee80211_ht_cap ht_capa_mask; 1939 struct ieee80211_vht_cap vht_capa; 1940 struct ieee80211_vht_cap vht_capa_mask; 1941 bool pbss; 1942 struct cfg80211_bss_selection bss_select; 1943 const u8 *prev_bssid; 1944 }; 1945 1946 /** 1947 * enum wiphy_params_flags - set_wiphy_params bitfield values 1948 * @WIPHY_PARAM_RETRY_SHORT: wiphy->retry_short has changed 1949 * @WIPHY_PARAM_RETRY_LONG: wiphy->retry_long has changed 1950 * @WIPHY_PARAM_FRAG_THRESHOLD: wiphy->frag_threshold has changed 1951 * @WIPHY_PARAM_RTS_THRESHOLD: wiphy->rts_threshold has changed 1952 * @WIPHY_PARAM_COVERAGE_CLASS: coverage class changed 1953 * @WIPHY_PARAM_DYN_ACK: dynack has been enabled 1954 */ 1955 enum wiphy_params_flags { 1956 WIPHY_PARAM_RETRY_SHORT = 1 << 0, 1957 WIPHY_PARAM_RETRY_LONG = 1 << 1, 1958 WIPHY_PARAM_FRAG_THRESHOLD = 1 << 2, 1959 WIPHY_PARAM_RTS_THRESHOLD = 1 << 3, 1960 WIPHY_PARAM_COVERAGE_CLASS = 1 << 4, 1961 WIPHY_PARAM_DYN_ACK = 1 << 5, 1962 }; 1963 1964 /* 1965 * cfg80211_bitrate_mask - masks for bitrate control 1966 */ 1967 struct cfg80211_bitrate_mask { 1968 struct { 1969 u32 legacy; 1970 u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN]; 1971 u16 vht_mcs[NL80211_VHT_NSS_MAX]; 1972 enum nl80211_txrate_gi gi; 1973 } control[NUM_NL80211_BANDS]; 1974 }; 1975 /** 1976 * struct cfg80211_pmksa - PMK Security Association 1977 * 1978 * This structure is passed to the set/del_pmksa() method for PMKSA 1979 * caching. 1980 * 1981 * @bssid: The AP's BSSID. 1982 * @pmkid: The PMK material itself. 1983 */ 1984 struct cfg80211_pmksa { 1985 const u8 *bssid; 1986 const u8 *pmkid; 1987 }; 1988 1989 /** 1990 * struct cfg80211_pkt_pattern - packet pattern 1991 * @mask: bitmask where to match pattern and where to ignore bytes, 1992 * one bit per byte, in same format as nl80211 1993 * @pattern: bytes to match where bitmask is 1 1994 * @pattern_len: length of pattern (in bytes) 1995 * @pkt_offset: packet offset (in bytes) 1996 * 1997 * Internal note: @mask and @pattern are allocated in one chunk of 1998 * memory, free @mask only! 1999 */ 2000 struct cfg80211_pkt_pattern { 2001 const u8 *mask, *pattern; 2002 int pattern_len; 2003 int pkt_offset; 2004 }; 2005 2006 /** 2007 * struct cfg80211_wowlan_tcp - TCP connection parameters 2008 * 2009 * @sock: (internal) socket for source port allocation 2010 * @src: source IP address 2011 * @dst: destination IP address 2012 * @dst_mac: destination MAC address 2013 * @src_port: source port 2014 * @dst_port: destination port 2015 * @payload_len: data payload length 2016 * @payload: data payload buffer 2017 * @payload_seq: payload sequence stamping configuration 2018 * @data_interval: interval at which to send data packets 2019 * @wake_len: wakeup payload match length 2020 * @wake_data: wakeup payload match data 2021 * @wake_mask: wakeup payload match mask 2022 * @tokens_size: length of the tokens buffer 2023 * @payload_tok: payload token usage configuration 2024 */ 2025 struct cfg80211_wowlan_tcp { 2026 struct socket *sock; 2027 __be32 src, dst; 2028 u16 src_port, dst_port; 2029 u8 dst_mac[ETH_ALEN]; 2030 int payload_len; 2031 const u8 *payload; 2032 struct nl80211_wowlan_tcp_data_seq payload_seq; 2033 u32 data_interval; 2034 u32 wake_len; 2035 const u8 *wake_data, *wake_mask; 2036 u32 tokens_size; 2037 /* must be last, variable member */ 2038 struct nl80211_wowlan_tcp_data_token payload_tok; 2039 }; 2040 2041 /** 2042 * struct cfg80211_wowlan - Wake on Wireless-LAN support info 2043 * 2044 * This structure defines the enabled WoWLAN triggers for the device. 2045 * @any: wake up on any activity -- special trigger if device continues 2046 * operating as normal during suspend 2047 * @disconnect: wake up if getting disconnected 2048 * @magic_pkt: wake up on receiving magic packet 2049 * @patterns: wake up on receiving packet matching a pattern 2050 * @n_patterns: number of patterns 2051 * @gtk_rekey_failure: wake up on GTK rekey failure 2052 * @eap_identity_req: wake up on EAP identity request packet 2053 * @four_way_handshake: wake up on 4-way handshake 2054 * @rfkill_release: wake up when rfkill is released 2055 * @tcp: TCP connection establishment/wakeup parameters, see nl80211.h. 2056 * NULL if not configured. 2057 * @nd_config: configuration for the scan to be used for net detect wake. 2058 */ 2059 struct cfg80211_wowlan { 2060 bool any, disconnect, magic_pkt, gtk_rekey_failure, 2061 eap_identity_req, four_way_handshake, 2062 rfkill_release; 2063 struct cfg80211_pkt_pattern *patterns; 2064 struct cfg80211_wowlan_tcp *tcp; 2065 int n_patterns; 2066 struct cfg80211_sched_scan_request *nd_config; 2067 }; 2068 2069 /** 2070 * struct cfg80211_coalesce_rules - Coalesce rule parameters 2071 * 2072 * This structure defines coalesce rule for the device. 2073 * @delay: maximum coalescing delay in msecs. 2074 * @condition: condition for packet coalescence. 2075 * see &enum nl80211_coalesce_condition. 2076 * @patterns: array of packet patterns 2077 * @n_patterns: number of patterns 2078 */ 2079 struct cfg80211_coalesce_rules { 2080 int delay; 2081 enum nl80211_coalesce_condition condition; 2082 struct cfg80211_pkt_pattern *patterns; 2083 int n_patterns; 2084 }; 2085 2086 /** 2087 * struct cfg80211_coalesce - Packet coalescing settings 2088 * 2089 * This structure defines coalescing settings. 2090 * @rules: array of coalesce rules 2091 * @n_rules: number of rules 2092 */ 2093 struct cfg80211_coalesce { 2094 struct cfg80211_coalesce_rules *rules; 2095 int n_rules; 2096 }; 2097 2098 /** 2099 * struct cfg80211_wowlan_nd_match - information about the match 2100 * 2101 * @ssid: SSID of the match that triggered the wake up 2102 * @n_channels: Number of channels where the match occurred. This 2103 * value may be zero if the driver can't report the channels. 2104 * @channels: center frequencies of the channels where a match 2105 * occurred (in MHz) 2106 */ 2107 struct cfg80211_wowlan_nd_match { 2108 struct cfg80211_ssid ssid; 2109 int n_channels; 2110 u32 channels[]; 2111 }; 2112 2113 /** 2114 * struct cfg80211_wowlan_nd_info - net detect wake up information 2115 * 2116 * @n_matches: Number of match information instances provided in 2117 * @matches. This value may be zero if the driver can't provide 2118 * match information. 2119 * @matches: Array of pointers to matches containing information about 2120 * the matches that triggered the wake up. 2121 */ 2122 struct cfg80211_wowlan_nd_info { 2123 int n_matches; 2124 struct cfg80211_wowlan_nd_match *matches[]; 2125 }; 2126 2127 /** 2128 * struct cfg80211_wowlan_wakeup - wakeup report 2129 * @disconnect: woke up by getting disconnected 2130 * @magic_pkt: woke up by receiving magic packet 2131 * @gtk_rekey_failure: woke up by GTK rekey failure 2132 * @eap_identity_req: woke up by EAP identity request packet 2133 * @four_way_handshake: woke up by 4-way handshake 2134 * @rfkill_release: woke up by rfkill being released 2135 * @pattern_idx: pattern that caused wakeup, -1 if not due to pattern 2136 * @packet_present_len: copied wakeup packet data 2137 * @packet_len: original wakeup packet length 2138 * @packet: The packet causing the wakeup, if any. 2139 * @packet_80211: For pattern match, magic packet and other data 2140 * frame triggers an 802.3 frame should be reported, for 2141 * disconnect due to deauth 802.11 frame. This indicates which 2142 * it is. 2143 * @tcp_match: TCP wakeup packet received 2144 * @tcp_connlost: TCP connection lost or failed to establish 2145 * @tcp_nomoretokens: TCP data ran out of tokens 2146 * @net_detect: if not %NULL, woke up because of net detect 2147 */ 2148 struct cfg80211_wowlan_wakeup { 2149 bool disconnect, magic_pkt, gtk_rekey_failure, 2150 eap_identity_req, four_way_handshake, 2151 rfkill_release, packet_80211, 2152 tcp_match, tcp_connlost, tcp_nomoretokens; 2153 s32 pattern_idx; 2154 u32 packet_present_len, packet_len; 2155 const void *packet; 2156 struct cfg80211_wowlan_nd_info *net_detect; 2157 }; 2158 2159 /** 2160 * struct cfg80211_gtk_rekey_data - rekey data 2161 * @kek: key encryption key (NL80211_KEK_LEN bytes) 2162 * @kck: key confirmation key (NL80211_KCK_LEN bytes) 2163 * @replay_ctr: replay counter (NL80211_REPLAY_CTR_LEN bytes) 2164 */ 2165 struct cfg80211_gtk_rekey_data { 2166 const u8 *kek, *kck, *replay_ctr; 2167 }; 2168 2169 /** 2170 * struct cfg80211_update_ft_ies_params - FT IE Information 2171 * 2172 * This structure provides information needed to update the fast transition IE 2173 * 2174 * @md: The Mobility Domain ID, 2 Octet value 2175 * @ie: Fast Transition IEs 2176 * @ie_len: Length of ft_ie in octets 2177 */ 2178 struct cfg80211_update_ft_ies_params { 2179 u16 md; 2180 const u8 *ie; 2181 size_t ie_len; 2182 }; 2183 2184 /** 2185 * struct cfg80211_mgmt_tx_params - mgmt tx parameters 2186 * 2187 * This structure provides information needed to transmit a mgmt frame 2188 * 2189 * @chan: channel to use 2190 * @offchan: indicates wether off channel operation is required 2191 * @wait: duration for ROC 2192 * @buf: buffer to transmit 2193 * @len: buffer length 2194 * @no_cck: don't use cck rates for this frame 2195 * @dont_wait_for_ack: tells the low level not to wait for an ack 2196 * @n_csa_offsets: length of csa_offsets array 2197 * @csa_offsets: array of all the csa offsets in the frame 2198 */ 2199 struct cfg80211_mgmt_tx_params { 2200 struct ieee80211_channel *chan; 2201 bool offchan; 2202 unsigned int wait; 2203 const u8 *buf; 2204 size_t len; 2205 bool no_cck; 2206 bool dont_wait_for_ack; 2207 int n_csa_offsets; 2208 const u16 *csa_offsets; 2209 }; 2210 2211 /** 2212 * struct cfg80211_dscp_exception - DSCP exception 2213 * 2214 * @dscp: DSCP value that does not adhere to the user priority range definition 2215 * @up: user priority value to which the corresponding DSCP value belongs 2216 */ 2217 struct cfg80211_dscp_exception { 2218 u8 dscp; 2219 u8 up; 2220 }; 2221 2222 /** 2223 * struct cfg80211_dscp_range - DSCP range definition for user priority 2224 * 2225 * @low: lowest DSCP value of this user priority range, inclusive 2226 * @high: highest DSCP value of this user priority range, inclusive 2227 */ 2228 struct cfg80211_dscp_range { 2229 u8 low; 2230 u8 high; 2231 }; 2232 2233 /* QoS Map Set element length defined in IEEE Std 802.11-2012, 8.4.2.97 */ 2234 #define IEEE80211_QOS_MAP_MAX_EX 21 2235 #define IEEE80211_QOS_MAP_LEN_MIN 16 2236 #define IEEE80211_QOS_MAP_LEN_MAX \ 2237 (IEEE80211_QOS_MAP_LEN_MIN + 2 * IEEE80211_QOS_MAP_MAX_EX) 2238 2239 /** 2240 * struct cfg80211_qos_map - QoS Map Information 2241 * 2242 * This struct defines the Interworking QoS map setting for DSCP values 2243 * 2244 * @num_des: number of DSCP exceptions (0..21) 2245 * @dscp_exception: optionally up to maximum of 21 DSCP exceptions from 2246 * the user priority DSCP range definition 2247 * @up: DSCP range definition for a particular user priority 2248 */ 2249 struct cfg80211_qos_map { 2250 u8 num_des; 2251 struct cfg80211_dscp_exception dscp_exception[IEEE80211_QOS_MAP_MAX_EX]; 2252 struct cfg80211_dscp_range up[8]; 2253 }; 2254 2255 /** 2256 * struct cfg80211_ops - backend description for wireless configuration 2257 * 2258 * This struct is registered by fullmac card drivers and/or wireless stacks 2259 * in order to handle configuration requests on their interfaces. 2260 * 2261 * All callbacks except where otherwise noted should return 0 2262 * on success or a negative error code. 2263 * 2264 * All operations are currently invoked under rtnl for consistency with the 2265 * wireless extensions but this is subject to reevaluation as soon as this 2266 * code is used more widely and we have a first user without wext. 2267 * 2268 * @suspend: wiphy device needs to be suspended. The variable @wow will 2269 * be %NULL or contain the enabled Wake-on-Wireless triggers that are 2270 * configured for the device. 2271 * @resume: wiphy device needs to be resumed 2272 * @set_wakeup: Called when WoWLAN is enabled/disabled, use this callback 2273 * to call device_set_wakeup_enable() to enable/disable wakeup from 2274 * the device. 2275 * 2276 * @add_virtual_intf: create a new virtual interface with the given name, 2277 * must set the struct wireless_dev's iftype. Beware: You must create 2278 * the new netdev in the wiphy's network namespace! Returns the struct 2279 * wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must 2280 * also set the address member in the wdev. 2281 * 2282 * @del_virtual_intf: remove the virtual interface 2283 * 2284 * @change_virtual_intf: change type/configuration of virtual interface, 2285 * keep the struct wireless_dev's iftype updated. 2286 * 2287 * @add_key: add a key with the given parameters. @mac_addr will be %NULL 2288 * when adding a group key. 2289 * 2290 * @get_key: get information about the key with the given parameters. 2291 * @mac_addr will be %NULL when requesting information for a group 2292 * key. All pointers given to the @callback function need not be valid 2293 * after it returns. This function should return an error if it is 2294 * not possible to retrieve the key, -ENOENT if it doesn't exist. 2295 * 2296 * @del_key: remove a key given the @mac_addr (%NULL for a group key) 2297 * and @key_index, return -ENOENT if the key doesn't exist. 2298 * 2299 * @set_default_key: set the default key on an interface 2300 * 2301 * @set_default_mgmt_key: set the default management frame key on an interface 2302 * 2303 * @set_rekey_data: give the data necessary for GTK rekeying to the driver 2304 * 2305 * @start_ap: Start acting in AP mode defined by the parameters. 2306 * @change_beacon: Change the beacon parameters for an access point mode 2307 * interface. This should reject the call when AP mode wasn't started. 2308 * @stop_ap: Stop being an AP, including stopping beaconing. 2309 * 2310 * @add_station: Add a new station. 2311 * @del_station: Remove a station 2312 * @change_station: Modify a given station. Note that flags changes are not much 2313 * validated in cfg80211, in particular the auth/assoc/authorized flags 2314 * might come to the driver in invalid combinations -- make sure to check 2315 * them, also against the existing state! Drivers must call 2316 * cfg80211_check_station_change() to validate the information. 2317 * @get_station: get station information for the station identified by @mac 2318 * @dump_station: dump station callback -- resume dump at index @idx 2319 * 2320 * @add_mpath: add a fixed mesh path 2321 * @del_mpath: delete a given mesh path 2322 * @change_mpath: change a given mesh path 2323 * @get_mpath: get a mesh path for the given parameters 2324 * @dump_mpath: dump mesh path callback -- resume dump at index @idx 2325 * @get_mpp: get a mesh proxy path for the given parameters 2326 * @dump_mpp: dump mesh proxy path callback -- resume dump at index @idx 2327 * @join_mesh: join the mesh network with the specified parameters 2328 * (invoked with the wireless_dev mutex held) 2329 * @leave_mesh: leave the current mesh network 2330 * (invoked with the wireless_dev mutex held) 2331 * 2332 * @get_mesh_config: Get the current mesh configuration 2333 * 2334 * @update_mesh_config: Update mesh parameters on a running mesh. 2335 * The mask is a bitfield which tells us which parameters to 2336 * set, and which to leave alone. 2337 * 2338 * @change_bss: Modify parameters for a given BSS. 2339 * 2340 * @set_txq_params: Set TX queue parameters 2341 * 2342 * @libertas_set_mesh_channel: Only for backward compatibility for libertas, 2343 * as it doesn't implement join_mesh and needs to set the channel to 2344 * join the mesh instead. 2345 * 2346 * @set_monitor_channel: Set the monitor mode channel for the device. If other 2347 * interfaces are active this callback should reject the configuration. 2348 * If no interfaces are active or the device is down, the channel should 2349 * be stored for when a monitor interface becomes active. 2350 * 2351 * @scan: Request to do a scan. If returning zero, the scan request is given 2352 * the driver, and will be valid until passed to cfg80211_scan_done(). 2353 * For scan results, call cfg80211_inform_bss(); you can call this outside 2354 * the scan/scan_done bracket too. 2355 * @abort_scan: Tell the driver to abort an ongoing scan. The driver shall 2356 * indicate the status of the scan through cfg80211_scan_done(). 2357 * 2358 * @auth: Request to authenticate with the specified peer 2359 * (invoked with the wireless_dev mutex held) 2360 * @assoc: Request to (re)associate with the specified peer 2361 * (invoked with the wireless_dev mutex held) 2362 * @deauth: Request to deauthenticate from the specified peer 2363 * (invoked with the wireless_dev mutex held) 2364 * @disassoc: Request to disassociate from the specified peer 2365 * (invoked with the wireless_dev mutex held) 2366 * 2367 * @connect: Connect to the ESS with the specified parameters. When connected, 2368 * call cfg80211_connect_result() with status code %WLAN_STATUS_SUCCESS. 2369 * If the connection fails for some reason, call cfg80211_connect_result() 2370 * with the status from the AP. The driver is allowed to roam to other 2371 * BSSes within the ESS when the other BSS matches the connect parameters. 2372 * When such roaming is initiated by the driver, the driver is expected to 2373 * verify that the target matches the configured security parameters and 2374 * to use Reassociation Request frame instead of Association Request frame. 2375 * The connect function can also be used to request the driver to perform 2376 * a specific roam when connected to an ESS. In that case, the prev_bssid 2377 * parameter is set to the BSSID of the currently associated BSS as an 2378 * indication of requesting reassociation. In both the driver-initiated and 2379 * new connect() call initiated roaming cases, the result of roaming is 2380 * indicated with a call to cfg80211_roamed() or cfg80211_roamed_bss(). 2381 * (invoked with the wireless_dev mutex held) 2382 * @disconnect: Disconnect from the BSS/ESS. 2383 * (invoked with the wireless_dev mutex held) 2384 * 2385 * @join_ibss: Join the specified IBSS (or create if necessary). Once done, call 2386 * cfg80211_ibss_joined(), also call that function when changing BSSID due 2387 * to a merge. 2388 * (invoked with the wireless_dev mutex held) 2389 * @leave_ibss: Leave the IBSS. 2390 * (invoked with the wireless_dev mutex held) 2391 * 2392 * @set_mcast_rate: Set the specified multicast rate (only if vif is in ADHOC or 2393 * MESH mode) 2394 * 2395 * @set_wiphy_params: Notify that wiphy parameters have changed; 2396 * @changed bitfield (see &enum wiphy_params_flags) describes which values 2397 * have changed. The actual parameter values are available in 2398 * struct wiphy. If returning an error, no value should be changed. 2399 * 2400 * @set_tx_power: set the transmit power according to the parameters, 2401 * the power passed is in mBm, to get dBm use MBM_TO_DBM(). The 2402 * wdev may be %NULL if power was set for the wiphy, and will 2403 * always be %NULL unless the driver supports per-vif TX power 2404 * (as advertised by the nl80211 feature flag.) 2405 * @get_tx_power: store the current TX power into the dbm variable; 2406 * return 0 if successful 2407 * 2408 * @set_wds_peer: set the WDS peer for a WDS interface 2409 * 2410 * @rfkill_poll: polls the hw rfkill line, use cfg80211 reporting 2411 * functions to adjust rfkill hw state 2412 * 2413 * @dump_survey: get site survey information. 2414 * 2415 * @remain_on_channel: Request the driver to remain awake on the specified 2416 * channel for the specified duration to complete an off-channel 2417 * operation (e.g., public action frame exchange). When the driver is 2418 * ready on the requested channel, it must indicate this with an event 2419 * notification by calling cfg80211_ready_on_channel(). 2420 * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation. 2421 * This allows the operation to be terminated prior to timeout based on 2422 * the duration value. 2423 * @mgmt_tx: Transmit a management frame. 2424 * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management 2425 * frame on another channel 2426 * 2427 * @testmode_cmd: run a test mode command; @wdev may be %NULL 2428 * @testmode_dump: Implement a test mode dump. The cb->args[2] and up may be 2429 * used by the function, but 0 and 1 must not be touched. Additionally, 2430 * return error codes other than -ENOBUFS and -ENOENT will terminate the 2431 * dump and return to userspace with an error, so be careful. If any data 2432 * was passed in from userspace then the data/len arguments will be present 2433 * and point to the data contained in %NL80211_ATTR_TESTDATA. 2434 * 2435 * @set_bitrate_mask: set the bitrate mask configuration 2436 * 2437 * @set_pmksa: Cache a PMKID for a BSSID. This is mostly useful for fullmac 2438 * devices running firmwares capable of generating the (re) association 2439 * RSN IE. It allows for faster roaming between WPA2 BSSIDs. 2440 * @del_pmksa: Delete a cached PMKID. 2441 * @flush_pmksa: Flush all cached PMKIDs. 2442 * @set_power_mgmt: Configure WLAN power management. A timeout value of -1 2443 * allows the driver to adjust the dynamic ps timeout value. 2444 * @set_cqm_rssi_config: Configure connection quality monitor RSSI threshold. 2445 * After configuration, the driver should (soon) send an event indicating 2446 * the current level is above/below the configured threshold; this may 2447 * need some care when the configuration is changed (without first being 2448 * disabled.) 2449 * @set_cqm_txe_config: Configure connection quality monitor TX error 2450 * thresholds. 2451 * @sched_scan_start: Tell the driver to start a scheduled scan. 2452 * @sched_scan_stop: Tell the driver to stop an ongoing scheduled scan. This 2453 * call must stop the scheduled scan and be ready for starting a new one 2454 * before it returns, i.e. @sched_scan_start may be called immediately 2455 * after that again and should not fail in that case. The driver should 2456 * not call cfg80211_sched_scan_stopped() for a requested stop (when this 2457 * method returns 0.) 2458 * 2459 * @mgmt_frame_register: Notify driver that a management frame type was 2460 * registered. The callback is allowed to sleep. 2461 * 2462 * @set_antenna: Set antenna configuration (tx_ant, rx_ant) on the device. 2463 * Parameters are bitmaps of allowed antennas to use for TX/RX. Drivers may 2464 * reject TX/RX mask combinations they cannot support by returning -EINVAL 2465 * (also see nl80211.h @NL80211_ATTR_WIPHY_ANTENNA_TX). 2466 * 2467 * @get_antenna: Get current antenna configuration from device (tx_ant, rx_ant). 2468 * 2469 * @tdls_mgmt: Transmit a TDLS management frame. 2470 * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup). 2471 * 2472 * @probe_client: probe an associated client, must return a cookie that it 2473 * later passes to cfg80211_probe_status(). 2474 * 2475 * @set_noack_map: Set the NoAck Map for the TIDs. 2476 * 2477 * @get_channel: Get the current operating channel for the virtual interface. 2478 * For monitor interfaces, it should return %NULL unless there's a single 2479 * current monitoring channel. 2480 * 2481 * @start_p2p_device: Start the given P2P device. 2482 * @stop_p2p_device: Stop the given P2P device. 2483 * 2484 * @set_mac_acl: Sets MAC address control list in AP and P2P GO mode. 2485 * Parameters include ACL policy, an array of MAC address of stations 2486 * and the number of MAC addresses. If there is already a list in driver 2487 * this new list replaces the existing one. Driver has to clear its ACL 2488 * when number of MAC addresses entries is passed as 0. Drivers which 2489 * advertise the support for MAC based ACL have to implement this callback. 2490 * 2491 * @start_radar_detection: Start radar detection in the driver. 2492 * 2493 * @update_ft_ies: Provide updated Fast BSS Transition information to the 2494 * driver. If the SME is in the driver/firmware, this information can be 2495 * used in building Authentication and Reassociation Request frames. 2496 * 2497 * @crit_proto_start: Indicates a critical protocol needs more link reliability 2498 * for a given duration (milliseconds). The protocol is provided so the 2499 * driver can take the most appropriate actions. 2500 * @crit_proto_stop: Indicates critical protocol no longer needs increased link 2501 * reliability. This operation can not fail. 2502 * @set_coalesce: Set coalesce parameters. 2503 * 2504 * @channel_switch: initiate channel-switch procedure (with CSA). Driver is 2505 * responsible for veryfing if the switch is possible. Since this is 2506 * inherently tricky driver may decide to disconnect an interface later 2507 * with cfg80211_stop_iface(). This doesn't mean driver can accept 2508 * everything. It should do it's best to verify requests and reject them 2509 * as soon as possible. 2510 * 2511 * @set_qos_map: Set QoS mapping information to the driver 2512 * 2513 * @set_ap_chanwidth: Set the AP (including P2P GO) mode channel width for the 2514 * given interface This is used e.g. for dynamic HT 20/40 MHz channel width 2515 * changes during the lifetime of the BSS. 2516 * 2517 * @add_tx_ts: validate (if admitted_time is 0) or add a TX TS to the device 2518 * with the given parameters; action frame exchange has been handled by 2519 * userspace so this just has to modify the TX path to take the TS into 2520 * account. 2521 * If the admitted time is 0 just validate the parameters to make sure 2522 * the session can be created at all; it is valid to just always return 2523 * success for that but that may result in inefficient behaviour (handshake 2524 * with the peer followed by immediate teardown when the addition is later 2525 * rejected) 2526 * @del_tx_ts: remove an existing TX TS 2527 * 2528 * @join_ocb: join the OCB network with the specified parameters 2529 * (invoked with the wireless_dev mutex held) 2530 * @leave_ocb: leave the current OCB network 2531 * (invoked with the wireless_dev mutex held) 2532 * 2533 * @tdls_channel_switch: Start channel-switching with a TDLS peer. The driver 2534 * is responsible for continually initiating channel-switching operations 2535 * and returning to the base channel for communication with the AP. 2536 * @tdls_cancel_channel_switch: Stop channel-switching with a TDLS peer. Both 2537 * peers must be on the base channel when the call completes. 2538 */ 2539 struct cfg80211_ops { 2540 int (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow); 2541 int (*resume)(struct wiphy *wiphy); 2542 void (*set_wakeup)(struct wiphy *wiphy, bool enabled); 2543 2544 struct wireless_dev * (*add_virtual_intf)(struct wiphy *wiphy, 2545 const char *name, 2546 unsigned char name_assign_type, 2547 enum nl80211_iftype type, 2548 u32 *flags, 2549 struct vif_params *params); 2550 int (*del_virtual_intf)(struct wiphy *wiphy, 2551 struct wireless_dev *wdev); 2552 int (*change_virtual_intf)(struct wiphy *wiphy, 2553 struct net_device *dev, 2554 enum nl80211_iftype type, u32 *flags, 2555 struct vif_params *params); 2556 2557 int (*add_key)(struct wiphy *wiphy, struct net_device *netdev, 2558 u8 key_index, bool pairwise, const u8 *mac_addr, 2559 struct key_params *params); 2560 int (*get_key)(struct wiphy *wiphy, struct net_device *netdev, 2561 u8 key_index, bool pairwise, const u8 *mac_addr, 2562 void *cookie, 2563 void (*callback)(void *cookie, struct key_params*)); 2564 int (*del_key)(struct wiphy *wiphy, struct net_device *netdev, 2565 u8 key_index, bool pairwise, const u8 *mac_addr); 2566 int (*set_default_key)(struct wiphy *wiphy, 2567 struct net_device *netdev, 2568 u8 key_index, bool unicast, bool multicast); 2569 int (*set_default_mgmt_key)(struct wiphy *wiphy, 2570 struct net_device *netdev, 2571 u8 key_index); 2572 2573 int (*start_ap)(struct wiphy *wiphy, struct net_device *dev, 2574 struct cfg80211_ap_settings *settings); 2575 int (*change_beacon)(struct wiphy *wiphy, struct net_device *dev, 2576 struct cfg80211_beacon_data *info); 2577 int (*stop_ap)(struct wiphy *wiphy, struct net_device *dev); 2578 2579 2580 int (*add_station)(struct wiphy *wiphy, struct net_device *dev, 2581 const u8 *mac, 2582 struct station_parameters *params); 2583 int (*del_station)(struct wiphy *wiphy, struct net_device *dev, 2584 struct station_del_parameters *params); 2585 int (*change_station)(struct wiphy *wiphy, struct net_device *dev, 2586 const u8 *mac, 2587 struct station_parameters *params); 2588 int (*get_station)(struct wiphy *wiphy, struct net_device *dev, 2589 const u8 *mac, struct station_info *sinfo); 2590 int (*dump_station)(struct wiphy *wiphy, struct net_device *dev, 2591 int idx, u8 *mac, struct station_info *sinfo); 2592 2593 int (*add_mpath)(struct wiphy *wiphy, struct net_device *dev, 2594 const u8 *dst, const u8 *next_hop); 2595 int (*del_mpath)(struct wiphy *wiphy, struct net_device *dev, 2596 const u8 *dst); 2597 int (*change_mpath)(struct wiphy *wiphy, struct net_device *dev, 2598 const u8 *dst, const u8 *next_hop); 2599 int (*get_mpath)(struct wiphy *wiphy, struct net_device *dev, 2600 u8 *dst, u8 *next_hop, struct mpath_info *pinfo); 2601 int (*dump_mpath)(struct wiphy *wiphy, struct net_device *dev, 2602 int idx, u8 *dst, u8 *next_hop, 2603 struct mpath_info *pinfo); 2604 int (*get_mpp)(struct wiphy *wiphy, struct net_device *dev, 2605 u8 *dst, u8 *mpp, struct mpath_info *pinfo); 2606 int (*dump_mpp)(struct wiphy *wiphy, struct net_device *dev, 2607 int idx, u8 *dst, u8 *mpp, 2608 struct mpath_info *pinfo); 2609 int (*get_mesh_config)(struct wiphy *wiphy, 2610 struct net_device *dev, 2611 struct mesh_config *conf); 2612 int (*update_mesh_config)(struct wiphy *wiphy, 2613 struct net_device *dev, u32 mask, 2614 const struct mesh_config *nconf); 2615 int (*join_mesh)(struct wiphy *wiphy, struct net_device *dev, 2616 const struct mesh_config *conf, 2617 const struct mesh_setup *setup); 2618 int (*leave_mesh)(struct wiphy *wiphy, struct net_device *dev); 2619 2620 int (*join_ocb)(struct wiphy *wiphy, struct net_device *dev, 2621 struct ocb_setup *setup); 2622 int (*leave_ocb)(struct wiphy *wiphy, struct net_device *dev); 2623 2624 int (*change_bss)(struct wiphy *wiphy, struct net_device *dev, 2625 struct bss_parameters *params); 2626 2627 int (*set_txq_params)(struct wiphy *wiphy, struct net_device *dev, 2628 struct ieee80211_txq_params *params); 2629 2630 int (*libertas_set_mesh_channel)(struct wiphy *wiphy, 2631 struct net_device *dev, 2632 struct ieee80211_channel *chan); 2633 2634 int (*set_monitor_channel)(struct wiphy *wiphy, 2635 struct cfg80211_chan_def *chandef); 2636 2637 int (*scan)(struct wiphy *wiphy, 2638 struct cfg80211_scan_request *request); 2639 void (*abort_scan)(struct wiphy *wiphy, struct wireless_dev *wdev); 2640 2641 int (*auth)(struct wiphy *wiphy, struct net_device *dev, 2642 struct cfg80211_auth_request *req); 2643 int (*assoc)(struct wiphy *wiphy, struct net_device *dev, 2644 struct cfg80211_assoc_request *req); 2645 int (*deauth)(struct wiphy *wiphy, struct net_device *dev, 2646 struct cfg80211_deauth_request *req); 2647 int (*disassoc)(struct wiphy *wiphy, struct net_device *dev, 2648 struct cfg80211_disassoc_request *req); 2649 2650 int (*connect)(struct wiphy *wiphy, struct net_device *dev, 2651 struct cfg80211_connect_params *sme); 2652 int (*disconnect)(struct wiphy *wiphy, struct net_device *dev, 2653 u16 reason_code); 2654 2655 int (*join_ibss)(struct wiphy *wiphy, struct net_device *dev, 2656 struct cfg80211_ibss_params *params); 2657 int (*leave_ibss)(struct wiphy *wiphy, struct net_device *dev); 2658 2659 int (*set_mcast_rate)(struct wiphy *wiphy, struct net_device *dev, 2660 int rate[NUM_NL80211_BANDS]); 2661 2662 int (*set_wiphy_params)(struct wiphy *wiphy, u32 changed); 2663 2664 int (*set_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev, 2665 enum nl80211_tx_power_setting type, int mbm); 2666 int (*get_tx_power)(struct wiphy *wiphy, struct wireless_dev *wdev, 2667 int *dbm); 2668 2669 int (*set_wds_peer)(struct wiphy *wiphy, struct net_device *dev, 2670 const u8 *addr); 2671 2672 void (*rfkill_poll)(struct wiphy *wiphy); 2673 2674 #ifdef CONFIG_NL80211_TESTMODE 2675 int (*testmode_cmd)(struct wiphy *wiphy, struct wireless_dev *wdev, 2676 void *data, int len); 2677 int (*testmode_dump)(struct wiphy *wiphy, struct sk_buff *skb, 2678 struct netlink_callback *cb, 2679 void *data, int len); 2680 #endif 2681 2682 int (*set_bitrate_mask)(struct wiphy *wiphy, 2683 struct net_device *dev, 2684 const u8 *peer, 2685 const struct cfg80211_bitrate_mask *mask); 2686 2687 int (*dump_survey)(struct wiphy *wiphy, struct net_device *netdev, 2688 int idx, struct survey_info *info); 2689 2690 int (*set_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 2691 struct cfg80211_pmksa *pmksa); 2692 int (*del_pmksa)(struct wiphy *wiphy, struct net_device *netdev, 2693 struct cfg80211_pmksa *pmksa); 2694 int (*flush_pmksa)(struct wiphy *wiphy, struct net_device *netdev); 2695 2696 int (*remain_on_channel)(struct wiphy *wiphy, 2697 struct wireless_dev *wdev, 2698 struct ieee80211_channel *chan, 2699 unsigned int duration, 2700 u64 *cookie); 2701 int (*cancel_remain_on_channel)(struct wiphy *wiphy, 2702 struct wireless_dev *wdev, 2703 u64 cookie); 2704 2705 int (*mgmt_tx)(struct wiphy *wiphy, struct wireless_dev *wdev, 2706 struct cfg80211_mgmt_tx_params *params, 2707 u64 *cookie); 2708 int (*mgmt_tx_cancel_wait)(struct wiphy *wiphy, 2709 struct wireless_dev *wdev, 2710 u64 cookie); 2711 2712 int (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev, 2713 bool enabled, int timeout); 2714 2715 int (*set_cqm_rssi_config)(struct wiphy *wiphy, 2716 struct net_device *dev, 2717 s32 rssi_thold, u32 rssi_hyst); 2718 2719 int (*set_cqm_txe_config)(struct wiphy *wiphy, 2720 struct net_device *dev, 2721 u32 rate, u32 pkts, u32 intvl); 2722 2723 void (*mgmt_frame_register)(struct wiphy *wiphy, 2724 struct wireless_dev *wdev, 2725 u16 frame_type, bool reg); 2726 2727 int (*set_antenna)(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant); 2728 int (*get_antenna)(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant); 2729 2730 int (*sched_scan_start)(struct wiphy *wiphy, 2731 struct net_device *dev, 2732 struct cfg80211_sched_scan_request *request); 2733 int (*sched_scan_stop)(struct wiphy *wiphy, struct net_device *dev); 2734 2735 int (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev, 2736 struct cfg80211_gtk_rekey_data *data); 2737 2738 int (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev, 2739 const u8 *peer, u8 action_code, u8 dialog_token, 2740 u16 status_code, u32 peer_capability, 2741 bool initiator, const u8 *buf, size_t len); 2742 int (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev, 2743 const u8 *peer, enum nl80211_tdls_operation oper); 2744 2745 int (*probe_client)(struct wiphy *wiphy, struct net_device *dev, 2746 const u8 *peer, u64 *cookie); 2747 2748 int (*set_noack_map)(struct wiphy *wiphy, 2749 struct net_device *dev, 2750 u16 noack_map); 2751 2752 int (*get_channel)(struct wiphy *wiphy, 2753 struct wireless_dev *wdev, 2754 struct cfg80211_chan_def *chandef); 2755 2756 int (*start_p2p_device)(struct wiphy *wiphy, 2757 struct wireless_dev *wdev); 2758 void (*stop_p2p_device)(struct wiphy *wiphy, 2759 struct wireless_dev *wdev); 2760 2761 int (*set_mac_acl)(struct wiphy *wiphy, struct net_device *dev, 2762 const struct cfg80211_acl_data *params); 2763 2764 int (*start_radar_detection)(struct wiphy *wiphy, 2765 struct net_device *dev, 2766 struct cfg80211_chan_def *chandef, 2767 u32 cac_time_ms); 2768 int (*update_ft_ies)(struct wiphy *wiphy, struct net_device *dev, 2769 struct cfg80211_update_ft_ies_params *ftie); 2770 int (*crit_proto_start)(struct wiphy *wiphy, 2771 struct wireless_dev *wdev, 2772 enum nl80211_crit_proto_id protocol, 2773 u16 duration); 2774 void (*crit_proto_stop)(struct wiphy *wiphy, 2775 struct wireless_dev *wdev); 2776 int (*set_coalesce)(struct wiphy *wiphy, 2777 struct cfg80211_coalesce *coalesce); 2778 2779 int (*channel_switch)(struct wiphy *wiphy, 2780 struct net_device *dev, 2781 struct cfg80211_csa_settings *params); 2782 2783 int (*set_qos_map)(struct wiphy *wiphy, 2784 struct net_device *dev, 2785 struct cfg80211_qos_map *qos_map); 2786 2787 int (*set_ap_chanwidth)(struct wiphy *wiphy, struct net_device *dev, 2788 struct cfg80211_chan_def *chandef); 2789 2790 int (*add_tx_ts)(struct wiphy *wiphy, struct net_device *dev, 2791 u8 tsid, const u8 *peer, u8 user_prio, 2792 u16 admitted_time); 2793 int (*del_tx_ts)(struct wiphy *wiphy, struct net_device *dev, 2794 u8 tsid, const u8 *peer); 2795 2796 int (*tdls_channel_switch)(struct wiphy *wiphy, 2797 struct net_device *dev, 2798 const u8 *addr, u8 oper_class, 2799 struct cfg80211_chan_def *chandef); 2800 void (*tdls_cancel_channel_switch)(struct wiphy *wiphy, 2801 struct net_device *dev, 2802 const u8 *addr); 2803 }; 2804 2805 /* 2806 * wireless hardware and networking interfaces structures 2807 * and registration/helper functions 2808 */ 2809 2810 /** 2811 * enum wiphy_flags - wiphy capability flags 2812 * 2813 * @WIPHY_FLAG_NETNS_OK: if not set, do not allow changing the netns of this 2814 * wiphy at all 2815 * @WIPHY_FLAG_PS_ON_BY_DEFAULT: if set to true, powersave will be enabled 2816 * by default -- this flag will be set depending on the kernel's default 2817 * on wiphy_new(), but can be changed by the driver if it has a good 2818 * reason to override the default 2819 * @WIPHY_FLAG_4ADDR_AP: supports 4addr mode even on AP (with a single station 2820 * on a VLAN interface) 2821 * @WIPHY_FLAG_4ADDR_STATION: supports 4addr mode even as a station 2822 * @WIPHY_FLAG_CONTROL_PORT_PROTOCOL: This device supports setting the 2823 * control port protocol ethertype. The device also honours the 2824 * control_port_no_encrypt flag. 2825 * @WIPHY_FLAG_IBSS_RSN: The device supports IBSS RSN. 2826 * @WIPHY_FLAG_MESH_AUTH: The device supports mesh authentication by routing 2827 * auth frames to userspace. See @NL80211_MESH_SETUP_USERSPACE_AUTH. 2828 * @WIPHY_FLAG_SUPPORTS_SCHED_SCAN: The device supports scheduled scans. 2829 * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the 2830 * firmware. 2831 * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP. 2832 * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation. 2833 * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z) 2834 * link setup/discovery operations internally. Setup, discovery and 2835 * teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT 2836 * command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be 2837 * used for asking the driver/firmware to perform a TDLS operation. 2838 * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME 2839 * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes 2840 * when there are virtual interfaces in AP mode by calling 2841 * cfg80211_report_obss_beacon(). 2842 * @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD: When operating as an AP, the device 2843 * responds to probe-requests in hardware. 2844 * @WIPHY_FLAG_OFFCHAN_TX: Device supports direct off-channel TX. 2845 * @WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL: Device supports remain-on-channel call. 2846 * @WIPHY_FLAG_SUPPORTS_5_10_MHZ: Device supports 5 MHz and 10 MHz channels. 2847 * @WIPHY_FLAG_HAS_CHANNEL_SWITCH: Device supports channel switch in 2848 * beaconing mode (AP, IBSS, Mesh, ...). 2849 */ 2850 enum wiphy_flags { 2851 /* use hole at 0 */ 2852 /* use hole at 1 */ 2853 /* use hole at 2 */ 2854 WIPHY_FLAG_NETNS_OK = BIT(3), 2855 WIPHY_FLAG_PS_ON_BY_DEFAULT = BIT(4), 2856 WIPHY_FLAG_4ADDR_AP = BIT(5), 2857 WIPHY_FLAG_4ADDR_STATION = BIT(6), 2858 WIPHY_FLAG_CONTROL_PORT_PROTOCOL = BIT(7), 2859 WIPHY_FLAG_IBSS_RSN = BIT(8), 2860 WIPHY_FLAG_MESH_AUTH = BIT(10), 2861 WIPHY_FLAG_SUPPORTS_SCHED_SCAN = BIT(11), 2862 /* use hole at 12 */ 2863 WIPHY_FLAG_SUPPORTS_FW_ROAM = BIT(13), 2864 WIPHY_FLAG_AP_UAPSD = BIT(14), 2865 WIPHY_FLAG_SUPPORTS_TDLS = BIT(15), 2866 WIPHY_FLAG_TDLS_EXTERNAL_SETUP = BIT(16), 2867 WIPHY_FLAG_HAVE_AP_SME = BIT(17), 2868 WIPHY_FLAG_REPORTS_OBSS = BIT(18), 2869 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD = BIT(19), 2870 WIPHY_FLAG_OFFCHAN_TX = BIT(20), 2871 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL = BIT(21), 2872 WIPHY_FLAG_SUPPORTS_5_10_MHZ = BIT(22), 2873 WIPHY_FLAG_HAS_CHANNEL_SWITCH = BIT(23), 2874 }; 2875 2876 /** 2877 * struct ieee80211_iface_limit - limit on certain interface types 2878 * @max: maximum number of interfaces of these types 2879 * @types: interface types (bits) 2880 */ 2881 struct ieee80211_iface_limit { 2882 u16 max; 2883 u16 types; 2884 }; 2885 2886 /** 2887 * struct ieee80211_iface_combination - possible interface combination 2888 * @limits: limits for the given interface types 2889 * @n_limits: number of limitations 2890 * @num_different_channels: can use up to this many different channels 2891 * @max_interfaces: maximum number of interfaces in total allowed in this 2892 * group 2893 * @beacon_int_infra_match: In this combination, the beacon intervals 2894 * between infrastructure and AP types must match. This is required 2895 * only in special cases. 2896 * @radar_detect_widths: bitmap of channel widths supported for radar detection 2897 * @radar_detect_regions: bitmap of regions supported for radar detection 2898 * 2899 * With this structure the driver can describe which interface 2900 * combinations it supports concurrently. 2901 * 2902 * Examples: 2903 * 2904 * 1. Allow #STA <= 1, #AP <= 1, matching BI, channels = 1, 2 total: 2905 * 2906 * struct ieee80211_iface_limit limits1[] = { 2907 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 2908 * { .max = 1, .types = BIT(NL80211_IFTYPE_AP}, }, 2909 * }; 2910 * struct ieee80211_iface_combination combination1 = { 2911 * .limits = limits1, 2912 * .n_limits = ARRAY_SIZE(limits1), 2913 * .max_interfaces = 2, 2914 * .beacon_int_infra_match = true, 2915 * }; 2916 * 2917 * 2918 * 2. Allow #{AP, P2P-GO} <= 8, channels = 1, 8 total: 2919 * 2920 * struct ieee80211_iface_limit limits2[] = { 2921 * { .max = 8, .types = BIT(NL80211_IFTYPE_AP) | 2922 * BIT(NL80211_IFTYPE_P2P_GO), }, 2923 * }; 2924 * struct ieee80211_iface_combination combination2 = { 2925 * .limits = limits2, 2926 * .n_limits = ARRAY_SIZE(limits2), 2927 * .max_interfaces = 8, 2928 * .num_different_channels = 1, 2929 * }; 2930 * 2931 * 2932 * 3. Allow #STA <= 1, #{P2P-client,P2P-GO} <= 3 on two channels, 4 total. 2933 * 2934 * This allows for an infrastructure connection and three P2P connections. 2935 * 2936 * struct ieee80211_iface_limit limits3[] = { 2937 * { .max = 1, .types = BIT(NL80211_IFTYPE_STATION), }, 2938 * { .max = 3, .types = BIT(NL80211_IFTYPE_P2P_GO) | 2939 * BIT(NL80211_IFTYPE_P2P_CLIENT), }, 2940 * }; 2941 * struct ieee80211_iface_combination combination3 = { 2942 * .limits = limits3, 2943 * .n_limits = ARRAY_SIZE(limits3), 2944 * .max_interfaces = 4, 2945 * .num_different_channels = 2, 2946 * }; 2947 */ 2948 struct ieee80211_iface_combination { 2949 const struct ieee80211_iface_limit *limits; 2950 u32 num_different_channels; 2951 u16 max_interfaces; 2952 u8 n_limits; 2953 bool beacon_int_infra_match; 2954 u8 radar_detect_widths; 2955 u8 radar_detect_regions; 2956 }; 2957 2958 struct ieee80211_txrx_stypes { 2959 u16 tx, rx; 2960 }; 2961 2962 /** 2963 * enum wiphy_wowlan_support_flags - WoWLAN support flags 2964 * @WIPHY_WOWLAN_ANY: supports wakeup for the special "any" 2965 * trigger that keeps the device operating as-is and 2966 * wakes up the host on any activity, for example a 2967 * received packet that passed filtering; note that the 2968 * packet should be preserved in that case 2969 * @WIPHY_WOWLAN_MAGIC_PKT: supports wakeup on magic packet 2970 * (see nl80211.h) 2971 * @WIPHY_WOWLAN_DISCONNECT: supports wakeup on disconnect 2972 * @WIPHY_WOWLAN_SUPPORTS_GTK_REKEY: supports GTK rekeying while asleep 2973 * @WIPHY_WOWLAN_GTK_REKEY_FAILURE: supports wakeup on GTK rekey failure 2974 * @WIPHY_WOWLAN_EAP_IDENTITY_REQ: supports wakeup on EAP identity request 2975 * @WIPHY_WOWLAN_4WAY_HANDSHAKE: supports wakeup on 4-way handshake failure 2976 * @WIPHY_WOWLAN_RFKILL_RELEASE: supports wakeup on RF-kill release 2977 * @WIPHY_WOWLAN_NET_DETECT: supports wakeup on network detection 2978 */ 2979 enum wiphy_wowlan_support_flags { 2980 WIPHY_WOWLAN_ANY = BIT(0), 2981 WIPHY_WOWLAN_MAGIC_PKT = BIT(1), 2982 WIPHY_WOWLAN_DISCONNECT = BIT(2), 2983 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY = BIT(3), 2984 WIPHY_WOWLAN_GTK_REKEY_FAILURE = BIT(4), 2985 WIPHY_WOWLAN_EAP_IDENTITY_REQ = BIT(5), 2986 WIPHY_WOWLAN_4WAY_HANDSHAKE = BIT(6), 2987 WIPHY_WOWLAN_RFKILL_RELEASE = BIT(7), 2988 WIPHY_WOWLAN_NET_DETECT = BIT(8), 2989 }; 2990 2991 struct wiphy_wowlan_tcp_support { 2992 const struct nl80211_wowlan_tcp_data_token_feature *tok; 2993 u32 data_payload_max; 2994 u32 data_interval_max; 2995 u32 wake_payload_max; 2996 bool seq; 2997 }; 2998 2999 /** 3000 * struct wiphy_wowlan_support - WoWLAN support data 3001 * @flags: see &enum wiphy_wowlan_support_flags 3002 * @n_patterns: number of supported wakeup patterns 3003 * (see nl80211.h for the pattern definition) 3004 * @pattern_max_len: maximum length of each pattern 3005 * @pattern_min_len: minimum length of each pattern 3006 * @max_pkt_offset: maximum Rx packet offset 3007 * @max_nd_match_sets: maximum number of matchsets for net-detect, 3008 * similar, but not necessarily identical, to max_match_sets for 3009 * scheduled scans. 3010 * See &struct cfg80211_sched_scan_request.@match_sets for more 3011 * details. 3012 * @tcp: TCP wakeup support information 3013 */ 3014 struct wiphy_wowlan_support { 3015 u32 flags; 3016 int n_patterns; 3017 int pattern_max_len; 3018 int pattern_min_len; 3019 int max_pkt_offset; 3020 int max_nd_match_sets; 3021 const struct wiphy_wowlan_tcp_support *tcp; 3022 }; 3023 3024 /** 3025 * struct wiphy_coalesce_support - coalesce support data 3026 * @n_rules: maximum number of coalesce rules 3027 * @max_delay: maximum supported coalescing delay in msecs 3028 * @n_patterns: number of supported patterns in a rule 3029 * (see nl80211.h for the pattern definition) 3030 * @pattern_max_len: maximum length of each pattern 3031 * @pattern_min_len: minimum length of each pattern 3032 * @max_pkt_offset: maximum Rx packet offset 3033 */ 3034 struct wiphy_coalesce_support { 3035 int n_rules; 3036 int max_delay; 3037 int n_patterns; 3038 int pattern_max_len; 3039 int pattern_min_len; 3040 int max_pkt_offset; 3041 }; 3042 3043 /** 3044 * enum wiphy_vendor_command_flags - validation flags for vendor commands 3045 * @WIPHY_VENDOR_CMD_NEED_WDEV: vendor command requires wdev 3046 * @WIPHY_VENDOR_CMD_NEED_NETDEV: vendor command requires netdev 3047 * @WIPHY_VENDOR_CMD_NEED_RUNNING: interface/wdev must be up & running 3048 * (must be combined with %_WDEV or %_NETDEV) 3049 */ 3050 enum wiphy_vendor_command_flags { 3051 WIPHY_VENDOR_CMD_NEED_WDEV = BIT(0), 3052 WIPHY_VENDOR_CMD_NEED_NETDEV = BIT(1), 3053 WIPHY_VENDOR_CMD_NEED_RUNNING = BIT(2), 3054 }; 3055 3056 /** 3057 * struct wiphy_vendor_command - vendor command definition 3058 * @info: vendor command identifying information, as used in nl80211 3059 * @flags: flags, see &enum wiphy_vendor_command_flags 3060 * @doit: callback for the operation, note that wdev is %NULL if the 3061 * flags didn't ask for a wdev and non-%NULL otherwise; the data 3062 * pointer may be %NULL if userspace provided no data at all 3063 * @dumpit: dump callback, for transferring bigger/multiple items. The 3064 * @storage points to cb->args[5], ie. is preserved over the multiple 3065 * dumpit calls. 3066 * It's recommended to not have the same sub command with both @doit and 3067 * @dumpit, so that userspace can assume certain ones are get and others 3068 * are used with dump requests. 3069 */ 3070 struct wiphy_vendor_command { 3071 struct nl80211_vendor_cmd_info info; 3072 u32 flags; 3073 int (*doit)(struct wiphy *wiphy, struct wireless_dev *wdev, 3074 const void *data, int data_len); 3075 int (*dumpit)(struct wiphy *wiphy, struct wireless_dev *wdev, 3076 struct sk_buff *skb, const void *data, int data_len, 3077 unsigned long *storage); 3078 }; 3079 3080 /** 3081 * struct wiphy - wireless hardware description 3082 * @reg_notifier: the driver's regulatory notification callback, 3083 * note that if your driver uses wiphy_apply_custom_regulatory() 3084 * the reg_notifier's request can be passed as NULL 3085 * @regd: the driver's regulatory domain, if one was requested via 3086 * the regulatory_hint() API. This can be used by the driver 3087 * on the reg_notifier() if it chooses to ignore future 3088 * regulatory domain changes caused by other drivers. 3089 * @signal_type: signal type reported in &struct cfg80211_bss. 3090 * @cipher_suites: supported cipher suites 3091 * @n_cipher_suites: number of supported cipher suites 3092 * @retry_short: Retry limit for short frames (dot11ShortRetryLimit) 3093 * @retry_long: Retry limit for long frames (dot11LongRetryLimit) 3094 * @frag_threshold: Fragmentation threshold (dot11FragmentationThreshold); 3095 * -1 = fragmentation disabled, only odd values >= 256 used 3096 * @rts_threshold: RTS threshold (dot11RTSThreshold); -1 = RTS/CTS disabled 3097 * @_net: the network namespace this wiphy currently lives in 3098 * @perm_addr: permanent MAC address of this device 3099 * @addr_mask: If the device supports multiple MAC addresses by masking, 3100 * set this to a mask with variable bits set to 1, e.g. if the last 3101 * four bits are variable then set it to 00-00-00-00-00-0f. The actual 3102 * variable bits shall be determined by the interfaces added, with 3103 * interfaces not matching the mask being rejected to be brought up. 3104 * @n_addresses: number of addresses in @addresses. 3105 * @addresses: If the device has more than one address, set this pointer 3106 * to a list of addresses (6 bytes each). The first one will be used 3107 * by default for perm_addr. In this case, the mask should be set to 3108 * all-zeroes. In this case it is assumed that the device can handle 3109 * the same number of arbitrary MAC addresses. 3110 * @registered: protects ->resume and ->suspend sysfs callbacks against 3111 * unregister hardware 3112 * @debugfsdir: debugfs directory used for this wiphy, will be renamed 3113 * automatically on wiphy renames 3114 * @dev: (virtual) struct device for this wiphy 3115 * @registered: helps synchronize suspend/resume with wiphy unregister 3116 * @wext: wireless extension handlers 3117 * @priv: driver private data (sized according to wiphy_new() parameter) 3118 * @interface_modes: bitmask of interfaces types valid for this wiphy, 3119 * must be set by driver 3120 * @iface_combinations: Valid interface combinations array, should not 3121 * list single interface types. 3122 * @n_iface_combinations: number of entries in @iface_combinations array. 3123 * @software_iftypes: bitmask of software interface types, these are not 3124 * subject to any restrictions since they are purely managed in SW. 3125 * @flags: wiphy flags, see &enum wiphy_flags 3126 * @regulatory_flags: wiphy regulatory flags, see 3127 * &enum ieee80211_regulatory_flags 3128 * @features: features advertised to nl80211, see &enum nl80211_feature_flags. 3129 * @ext_features: extended features advertised to nl80211, see 3130 * &enum nl80211_ext_feature_index. 3131 * @bss_priv_size: each BSS struct has private data allocated with it, 3132 * this variable determines its size 3133 * @max_scan_ssids: maximum number of SSIDs the device can scan for in 3134 * any given scan 3135 * @max_sched_scan_ssids: maximum number of SSIDs the device can scan 3136 * for in any given scheduled scan 3137 * @max_match_sets: maximum number of match sets the device can handle 3138 * when performing a scheduled scan, 0 if filtering is not 3139 * supported. 3140 * @max_scan_ie_len: maximum length of user-controlled IEs device can 3141 * add to probe request frames transmitted during a scan, must not 3142 * include fixed IEs like supported rates 3143 * @max_sched_scan_ie_len: same as max_scan_ie_len, but for scheduled 3144 * scans 3145 * @max_sched_scan_plans: maximum number of scan plans (scan interval and number 3146 * of iterations) for scheduled scan supported by the device. 3147 * @max_sched_scan_plan_interval: maximum interval (in seconds) for a 3148 * single scan plan supported by the device. 3149 * @max_sched_scan_plan_iterations: maximum number of iterations for a single 3150 * scan plan supported by the device. 3151 * @coverage_class: current coverage class 3152 * @fw_version: firmware version for ethtool reporting 3153 * @hw_version: hardware version for ethtool reporting 3154 * @max_num_pmkids: maximum number of PMKIDs supported by device 3155 * @privid: a pointer that drivers can use to identify if an arbitrary 3156 * wiphy is theirs, e.g. in global notifiers 3157 * @bands: information about bands/channels supported by this device 3158 * 3159 * @mgmt_stypes: bitmasks of frame subtypes that can be subscribed to or 3160 * transmitted through nl80211, points to an array indexed by interface 3161 * type 3162 * 3163 * @available_antennas_tx: bitmap of antennas which are available to be 3164 * configured as TX antennas. Antenna configuration commands will be 3165 * rejected unless this or @available_antennas_rx is set. 3166 * 3167 * @available_antennas_rx: bitmap of antennas which are available to be 3168 * configured as RX antennas. Antenna configuration commands will be 3169 * rejected unless this or @available_antennas_tx is set. 3170 * 3171 * @probe_resp_offload: 3172 * Bitmap of supported protocols for probe response offloading. 3173 * See &enum nl80211_probe_resp_offload_support_attr. Only valid 3174 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 3175 * 3176 * @max_remain_on_channel_duration: Maximum time a remain-on-channel operation 3177 * may request, if implemented. 3178 * 3179 * @wowlan: WoWLAN support information 3180 * @wowlan_config: current WoWLAN configuration; this should usually not be 3181 * used since access to it is necessarily racy, use the parameter passed 3182 * to the suspend() operation instead. 3183 * 3184 * @ap_sme_capa: AP SME capabilities, flags from &enum nl80211_ap_sme_features. 3185 * @ht_capa_mod_mask: Specify what ht_cap values can be over-ridden. 3186 * If null, then none can be over-ridden. 3187 * @vht_capa_mod_mask: Specify what VHT capabilities can be over-ridden. 3188 * If null, then none can be over-ridden. 3189 * 3190 * @max_acl_mac_addrs: Maximum number of MAC addresses that the device 3191 * supports for ACL. 3192 * 3193 * @extended_capabilities: extended capabilities supported by the driver, 3194 * additional capabilities might be supported by userspace; these are 3195 * the 802.11 extended capabilities ("Extended Capabilities element") 3196 * and are in the same format as in the information element. See 3197 * 802.11-2012 8.4.2.29 for the defined fields. 3198 * @extended_capabilities_mask: mask of the valid values 3199 * @extended_capabilities_len: length of the extended capabilities 3200 * @coalesce: packet coalescing support information 3201 * 3202 * @vendor_commands: array of vendor commands supported by the hardware 3203 * @n_vendor_commands: number of vendor commands 3204 * @vendor_events: array of vendor events supported by the hardware 3205 * @n_vendor_events: number of vendor events 3206 * 3207 * @max_ap_assoc_sta: maximum number of associated stations supported in AP mode 3208 * (including P2P GO) or 0 to indicate no such limit is advertised. The 3209 * driver is allowed to advertise a theoretical limit that it can reach in 3210 * some cases, but may not always reach. 3211 * 3212 * @max_num_csa_counters: Number of supported csa_counters in beacons 3213 * and probe responses. This value should be set if the driver 3214 * wishes to limit the number of csa counters. Default (0) means 3215 * infinite. 3216 * @max_adj_channel_rssi_comp: max offset of between the channel on which the 3217 * frame was sent and the channel on which the frame was heard for which 3218 * the reported rssi is still valid. If a driver is able to compensate the 3219 * low rssi when a frame is heard on different channel, then it should set 3220 * this variable to the maximal offset for which it can compensate. 3221 * This value should be set in MHz. 3222 * @bss_select_support: bitmask indicating the BSS selection criteria supported 3223 * by the driver in the .connect() callback. The bit position maps to the 3224 * attribute indices defined in &enum nl80211_bss_select_attr. 3225 */ 3226 struct wiphy { 3227 /* assign these fields before you register the wiphy */ 3228 3229 /* permanent MAC address(es) */ 3230 u8 perm_addr[ETH_ALEN]; 3231 u8 addr_mask[ETH_ALEN]; 3232 3233 struct mac_address *addresses; 3234 3235 const struct ieee80211_txrx_stypes *mgmt_stypes; 3236 3237 const struct ieee80211_iface_combination *iface_combinations; 3238 int n_iface_combinations; 3239 u16 software_iftypes; 3240 3241 u16 n_addresses; 3242 3243 /* Supported interface modes, OR together BIT(NL80211_IFTYPE_...) */ 3244 u16 interface_modes; 3245 3246 u16 max_acl_mac_addrs; 3247 3248 u32 flags, regulatory_flags, features; 3249 u8 ext_features[DIV_ROUND_UP(NUM_NL80211_EXT_FEATURES, 8)]; 3250 3251 u32 ap_sme_capa; 3252 3253 enum cfg80211_signal_type signal_type; 3254 3255 int bss_priv_size; 3256 u8 max_scan_ssids; 3257 u8 max_sched_scan_ssids; 3258 u8 max_match_sets; 3259 u16 max_scan_ie_len; 3260 u16 max_sched_scan_ie_len; 3261 u32 max_sched_scan_plans; 3262 u32 max_sched_scan_plan_interval; 3263 u32 max_sched_scan_plan_iterations; 3264 3265 int n_cipher_suites; 3266 const u32 *cipher_suites; 3267 3268 u8 retry_short; 3269 u8 retry_long; 3270 u32 frag_threshold; 3271 u32 rts_threshold; 3272 u8 coverage_class; 3273 3274 char fw_version[ETHTOOL_FWVERS_LEN]; 3275 u32 hw_version; 3276 3277 #ifdef CONFIG_PM 3278 const struct wiphy_wowlan_support *wowlan; 3279 struct cfg80211_wowlan *wowlan_config; 3280 #endif 3281 3282 u16 max_remain_on_channel_duration; 3283 3284 u8 max_num_pmkids; 3285 3286 u32 available_antennas_tx; 3287 u32 available_antennas_rx; 3288 3289 /* 3290 * Bitmap of supported protocols for probe response offloading 3291 * see &enum nl80211_probe_resp_offload_support_attr. Only valid 3292 * when the wiphy flag @WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD is set. 3293 */ 3294 u32 probe_resp_offload; 3295 3296 const u8 *extended_capabilities, *extended_capabilities_mask; 3297 u8 extended_capabilities_len; 3298 3299 /* If multiple wiphys are registered and you're handed e.g. 3300 * a regular netdev with assigned ieee80211_ptr, you won't 3301 * know whether it points to a wiphy your driver has registered 3302 * or not. Assign this to something global to your driver to 3303 * help determine whether you own this wiphy or not. */ 3304 const void *privid; 3305 3306 struct ieee80211_supported_band *bands[NUM_NL80211_BANDS]; 3307 3308 /* Lets us get back the wiphy on the callback */ 3309 void (*reg_notifier)(struct wiphy *wiphy, 3310 struct regulatory_request *request); 3311 3312 /* fields below are read-only, assigned by cfg80211 */ 3313 3314 const struct ieee80211_regdomain __rcu *regd; 3315 3316 /* the item in /sys/class/ieee80211/ points to this, 3317 * you need use set_wiphy_dev() (see below) */ 3318 struct device dev; 3319 3320 /* protects ->resume, ->suspend sysfs callbacks against unregister hw */ 3321 bool registered; 3322 3323 /* dir in debugfs: ieee80211/<wiphyname> */ 3324 struct dentry *debugfsdir; 3325 3326 const struct ieee80211_ht_cap *ht_capa_mod_mask; 3327 const struct ieee80211_vht_cap *vht_capa_mod_mask; 3328 3329 /* the network namespace this phy lives in currently */ 3330 possible_net_t _net; 3331 3332 #ifdef CONFIG_CFG80211_WEXT 3333 const struct iw_handler_def *wext; 3334 #endif 3335 3336 const struct wiphy_coalesce_support *coalesce; 3337 3338 const struct wiphy_vendor_command *vendor_commands; 3339 const struct nl80211_vendor_cmd_info *vendor_events; 3340 int n_vendor_commands, n_vendor_events; 3341 3342 u16 max_ap_assoc_sta; 3343 3344 u8 max_num_csa_counters; 3345 u8 max_adj_channel_rssi_comp; 3346 3347 u32 bss_select_support; 3348 3349 char priv[0] __aligned(NETDEV_ALIGN); 3350 }; 3351 3352 static inline struct net *wiphy_net(struct wiphy *wiphy) 3353 { 3354 return read_pnet(&wiphy->_net); 3355 } 3356 3357 static inline void wiphy_net_set(struct wiphy *wiphy, struct net *net) 3358 { 3359 write_pnet(&wiphy->_net, net); 3360 } 3361 3362 /** 3363 * wiphy_priv - return priv from wiphy 3364 * 3365 * @wiphy: the wiphy whose priv pointer to return 3366 * Return: The priv of @wiphy. 3367 */ 3368 static inline void *wiphy_priv(struct wiphy *wiphy) 3369 { 3370 BUG_ON(!wiphy); 3371 return &wiphy->priv; 3372 } 3373 3374 /** 3375 * priv_to_wiphy - return the wiphy containing the priv 3376 * 3377 * @priv: a pointer previously returned by wiphy_priv 3378 * Return: The wiphy of @priv. 3379 */ 3380 static inline struct wiphy *priv_to_wiphy(void *priv) 3381 { 3382 BUG_ON(!priv); 3383 return container_of(priv, struct wiphy, priv); 3384 } 3385 3386 /** 3387 * set_wiphy_dev - set device pointer for wiphy 3388 * 3389 * @wiphy: The wiphy whose device to bind 3390 * @dev: The device to parent it to 3391 */ 3392 static inline void set_wiphy_dev(struct wiphy *wiphy, struct device *dev) 3393 { 3394 wiphy->dev.parent = dev; 3395 } 3396 3397 /** 3398 * wiphy_dev - get wiphy dev pointer 3399 * 3400 * @wiphy: The wiphy whose device struct to look up 3401 * Return: The dev of @wiphy. 3402 */ 3403 static inline struct device *wiphy_dev(struct wiphy *wiphy) 3404 { 3405 return wiphy->dev.parent; 3406 } 3407 3408 /** 3409 * wiphy_name - get wiphy name 3410 * 3411 * @wiphy: The wiphy whose name to return 3412 * Return: The name of @wiphy. 3413 */ 3414 static inline const char *wiphy_name(const struct wiphy *wiphy) 3415 { 3416 return dev_name(&wiphy->dev); 3417 } 3418 3419 /** 3420 * wiphy_new_nm - create a new wiphy for use with cfg80211 3421 * 3422 * @ops: The configuration operations for this device 3423 * @sizeof_priv: The size of the private area to allocate 3424 * @requested_name: Request a particular name. 3425 * NULL is valid value, and means use the default phy%d naming. 3426 * 3427 * Create a new wiphy and associate the given operations with it. 3428 * @sizeof_priv bytes are allocated for private use. 3429 * 3430 * Return: A pointer to the new wiphy. This pointer must be 3431 * assigned to each netdev's ieee80211_ptr for proper operation. 3432 */ 3433 struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv, 3434 const char *requested_name); 3435 3436 /** 3437 * wiphy_new - create a new wiphy for use with cfg80211 3438 * 3439 * @ops: The configuration operations for this device 3440 * @sizeof_priv: The size of the private area to allocate 3441 * 3442 * Create a new wiphy and associate the given operations with it. 3443 * @sizeof_priv bytes are allocated for private use. 3444 * 3445 * Return: A pointer to the new wiphy. This pointer must be 3446 * assigned to each netdev's ieee80211_ptr for proper operation. 3447 */ 3448 static inline struct wiphy *wiphy_new(const struct cfg80211_ops *ops, 3449 int sizeof_priv) 3450 { 3451 return wiphy_new_nm(ops, sizeof_priv, NULL); 3452 } 3453 3454 /** 3455 * wiphy_register - register a wiphy with cfg80211 3456 * 3457 * @wiphy: The wiphy to register. 3458 * 3459 * Return: A non-negative wiphy index or a negative error code. 3460 */ 3461 int wiphy_register(struct wiphy *wiphy); 3462 3463 /** 3464 * wiphy_unregister - deregister a wiphy from cfg80211 3465 * 3466 * @wiphy: The wiphy to unregister. 3467 * 3468 * After this call, no more requests can be made with this priv 3469 * pointer, but the call may sleep to wait for an outstanding 3470 * request that is being handled. 3471 */ 3472 void wiphy_unregister(struct wiphy *wiphy); 3473 3474 /** 3475 * wiphy_free - free wiphy 3476 * 3477 * @wiphy: The wiphy to free 3478 */ 3479 void wiphy_free(struct wiphy *wiphy); 3480 3481 /* internal structs */ 3482 struct cfg80211_conn; 3483 struct cfg80211_internal_bss; 3484 struct cfg80211_cached_keys; 3485 3486 /** 3487 * struct wireless_dev - wireless device state 3488 * 3489 * For netdevs, this structure must be allocated by the driver 3490 * that uses the ieee80211_ptr field in struct net_device (this 3491 * is intentional so it can be allocated along with the netdev.) 3492 * It need not be registered then as netdev registration will 3493 * be intercepted by cfg80211 to see the new wireless device. 3494 * 3495 * For non-netdev uses, it must also be allocated by the driver 3496 * in response to the cfg80211 callbacks that require it, as 3497 * there's no netdev registration in that case it may not be 3498 * allocated outside of callback operations that return it. 3499 * 3500 * @wiphy: pointer to hardware description 3501 * @iftype: interface type 3502 * @list: (private) Used to collect the interfaces 3503 * @netdev: (private) Used to reference back to the netdev, may be %NULL 3504 * @identifier: (private) Identifier used in nl80211 to identify this 3505 * wireless device if it has no netdev 3506 * @current_bss: (private) Used by the internal configuration code 3507 * @chandef: (private) Used by the internal configuration code to track 3508 * the user-set channel definition. 3509 * @preset_chandef: (private) Used by the internal configuration code to 3510 * track the channel to be used for AP later 3511 * @bssid: (private) Used by the internal configuration code 3512 * @ssid: (private) Used by the internal configuration code 3513 * @ssid_len: (private) Used by the internal configuration code 3514 * @mesh_id_len: (private) Used by the internal configuration code 3515 * @mesh_id_up_len: (private) Used by the internal configuration code 3516 * @wext: (private) Used by the internal wireless extensions compat code 3517 * @use_4addr: indicates 4addr mode is used on this interface, must be 3518 * set by driver (if supported) on add_interface BEFORE registering the 3519 * netdev and may otherwise be used by driver read-only, will be update 3520 * by cfg80211 on change_interface 3521 * @mgmt_registrations: list of registrations for management frames 3522 * @mgmt_registrations_lock: lock for the list 3523 * @mtx: mutex used to lock data in this struct, may be used by drivers 3524 * and some API functions require it held 3525 * @beacon_interval: beacon interval used on this device for transmitting 3526 * beacons, 0 when not valid 3527 * @address: The address for this device, valid only if @netdev is %NULL 3528 * @p2p_started: true if this is a P2P Device that has been started 3529 * @cac_started: true if DFS channel availability check has been started 3530 * @cac_start_time: timestamp (jiffies) when the dfs state was entered. 3531 * @cac_time_ms: CAC time in ms 3532 * @ps: powersave mode is enabled 3533 * @ps_timeout: dynamic powersave timeout 3534 * @ap_unexpected_nlportid: (private) netlink port ID of application 3535 * registered for unexpected class 3 frames (AP mode) 3536 * @conn: (private) cfg80211 software SME connection state machine data 3537 * @connect_keys: (private) keys to set after connection is established 3538 * @conn_bss_type: connecting/connected BSS type 3539 * @ibss_fixed: (private) IBSS is using fixed BSSID 3540 * @ibss_dfs_possible: (private) IBSS may change to a DFS channel 3541 * @event_list: (private) list for internal event processing 3542 * @event_lock: (private) lock for event list 3543 * @owner_nlportid: (private) owner socket port ID 3544 */ 3545 struct wireless_dev { 3546 struct wiphy *wiphy; 3547 enum nl80211_iftype iftype; 3548 3549 /* the remainder of this struct should be private to cfg80211 */ 3550 struct list_head list; 3551 struct net_device *netdev; 3552 3553 u32 identifier; 3554 3555 struct list_head mgmt_registrations; 3556 spinlock_t mgmt_registrations_lock; 3557 3558 struct mutex mtx; 3559 3560 bool use_4addr, p2p_started; 3561 3562 u8 address[ETH_ALEN] __aligned(sizeof(u16)); 3563 3564 /* currently used for IBSS and SME - might be rearranged later */ 3565 u8 ssid[IEEE80211_MAX_SSID_LEN]; 3566 u8 ssid_len, mesh_id_len, mesh_id_up_len; 3567 struct cfg80211_conn *conn; 3568 struct cfg80211_cached_keys *connect_keys; 3569 enum ieee80211_bss_type conn_bss_type; 3570 3571 struct list_head event_list; 3572 spinlock_t event_lock; 3573 3574 struct cfg80211_internal_bss *current_bss; /* associated / joined */ 3575 struct cfg80211_chan_def preset_chandef; 3576 struct cfg80211_chan_def chandef; 3577 3578 bool ibss_fixed; 3579 bool ibss_dfs_possible; 3580 3581 bool ps; 3582 int ps_timeout; 3583 3584 int beacon_interval; 3585 3586 u32 ap_unexpected_nlportid; 3587 3588 bool cac_started; 3589 unsigned long cac_start_time; 3590 unsigned int cac_time_ms; 3591 3592 u32 owner_nlportid; 3593 3594 #ifdef CONFIG_CFG80211_WEXT 3595 /* wext data */ 3596 struct { 3597 struct cfg80211_ibss_params ibss; 3598 struct cfg80211_connect_params connect; 3599 struct cfg80211_cached_keys *keys; 3600 const u8 *ie; 3601 size_t ie_len; 3602 u8 bssid[ETH_ALEN], prev_bssid[ETH_ALEN]; 3603 u8 ssid[IEEE80211_MAX_SSID_LEN]; 3604 s8 default_key, default_mgmt_key; 3605 bool prev_bssid_valid; 3606 } wext; 3607 #endif 3608 }; 3609 3610 static inline u8 *wdev_address(struct wireless_dev *wdev) 3611 { 3612 if (wdev->netdev) 3613 return wdev->netdev->dev_addr; 3614 return wdev->address; 3615 } 3616 3617 /** 3618 * wdev_priv - return wiphy priv from wireless_dev 3619 * 3620 * @wdev: The wireless device whose wiphy's priv pointer to return 3621 * Return: The wiphy priv of @wdev. 3622 */ 3623 static inline void *wdev_priv(struct wireless_dev *wdev) 3624 { 3625 BUG_ON(!wdev); 3626 return wiphy_priv(wdev->wiphy); 3627 } 3628 3629 /** 3630 * DOC: Utility functions 3631 * 3632 * cfg80211 offers a number of utility functions that can be useful. 3633 */ 3634 3635 /** 3636 * ieee80211_channel_to_frequency - convert channel number to frequency 3637 * @chan: channel number 3638 * @band: band, necessary due to channel number overlap 3639 * Return: The corresponding frequency (in MHz), or 0 if the conversion failed. 3640 */ 3641 int ieee80211_channel_to_frequency(int chan, enum nl80211_band band); 3642 3643 /** 3644 * ieee80211_frequency_to_channel - convert frequency to channel number 3645 * @freq: center frequency 3646 * Return: The corresponding channel, or 0 if the conversion failed. 3647 */ 3648 int ieee80211_frequency_to_channel(int freq); 3649 3650 /* 3651 * Name indirection necessary because the ieee80211 code also has 3652 * a function named "ieee80211_get_channel", so if you include 3653 * cfg80211's header file you get cfg80211's version, if you try 3654 * to include both header files you'll (rightfully!) get a symbol 3655 * clash. 3656 */ 3657 struct ieee80211_channel *__ieee80211_get_channel(struct wiphy *wiphy, 3658 int freq); 3659 /** 3660 * ieee80211_get_channel - get channel struct from wiphy for specified frequency 3661 * @wiphy: the struct wiphy to get the channel for 3662 * @freq: the center frequency of the channel 3663 * Return: The channel struct from @wiphy at @freq. 3664 */ 3665 static inline struct ieee80211_channel * 3666 ieee80211_get_channel(struct wiphy *wiphy, int freq) 3667 { 3668 return __ieee80211_get_channel(wiphy, freq); 3669 } 3670 3671 /** 3672 * ieee80211_get_response_rate - get basic rate for a given rate 3673 * 3674 * @sband: the band to look for rates in 3675 * @basic_rates: bitmap of basic rates 3676 * @bitrate: the bitrate for which to find the basic rate 3677 * 3678 * Return: The basic rate corresponding to a given bitrate, that 3679 * is the next lower bitrate contained in the basic rate map, 3680 * which is, for this function, given as a bitmap of indices of 3681 * rates in the band's bitrate table. 3682 */ 3683 struct ieee80211_rate * 3684 ieee80211_get_response_rate(struct ieee80211_supported_band *sband, 3685 u32 basic_rates, int bitrate); 3686 3687 /** 3688 * ieee80211_mandatory_rates - get mandatory rates for a given band 3689 * @sband: the band to look for rates in 3690 * @scan_width: width of the control channel 3691 * 3692 * This function returns a bitmap of the mandatory rates for the given 3693 * band, bits are set according to the rate position in the bitrates array. 3694 */ 3695 u32 ieee80211_mandatory_rates(struct ieee80211_supported_band *sband, 3696 enum nl80211_bss_scan_width scan_width); 3697 3698 /* 3699 * Radiotap parsing functions -- for controlled injection support 3700 * 3701 * Implemented in net/wireless/radiotap.c 3702 * Documentation in Documentation/networking/radiotap-headers.txt 3703 */ 3704 3705 struct radiotap_align_size { 3706 uint8_t align:4, size:4; 3707 }; 3708 3709 struct ieee80211_radiotap_namespace { 3710 const struct radiotap_align_size *align_size; 3711 int n_bits; 3712 uint32_t oui; 3713 uint8_t subns; 3714 }; 3715 3716 struct ieee80211_radiotap_vendor_namespaces { 3717 const struct ieee80211_radiotap_namespace *ns; 3718 int n_ns; 3719 }; 3720 3721 /** 3722 * struct ieee80211_radiotap_iterator - tracks walk thru present radiotap args 3723 * @this_arg_index: index of current arg, valid after each successful call 3724 * to ieee80211_radiotap_iterator_next() 3725 * @this_arg: pointer to current radiotap arg; it is valid after each 3726 * call to ieee80211_radiotap_iterator_next() but also after 3727 * ieee80211_radiotap_iterator_init() where it will point to 3728 * the beginning of the actual data portion 3729 * @this_arg_size: length of the current arg, for convenience 3730 * @current_namespace: pointer to the current namespace definition 3731 * (or internally %NULL if the current namespace is unknown) 3732 * @is_radiotap_ns: indicates whether the current namespace is the default 3733 * radiotap namespace or not 3734 * 3735 * @_rtheader: pointer to the radiotap header we are walking through 3736 * @_max_length: length of radiotap header in cpu byte ordering 3737 * @_arg_index: next argument index 3738 * @_arg: next argument pointer 3739 * @_next_bitmap: internal pointer to next present u32 3740 * @_bitmap_shifter: internal shifter for curr u32 bitmap, b0 set == arg present 3741 * @_vns: vendor namespace definitions 3742 * @_next_ns_data: beginning of the next namespace's data 3743 * @_reset_on_ext: internal; reset the arg index to 0 when going to the 3744 * next bitmap word 3745 * 3746 * Describes the radiotap parser state. Fields prefixed with an underscore 3747 * must not be used by users of the parser, only by the parser internally. 3748 */ 3749 3750 struct ieee80211_radiotap_iterator { 3751 struct ieee80211_radiotap_header *_rtheader; 3752 const struct ieee80211_radiotap_vendor_namespaces *_vns; 3753 const struct ieee80211_radiotap_namespace *current_namespace; 3754 3755 unsigned char *_arg, *_next_ns_data; 3756 __le32 *_next_bitmap; 3757 3758 unsigned char *this_arg; 3759 int this_arg_index; 3760 int this_arg_size; 3761 3762 int is_radiotap_ns; 3763 3764 int _max_length; 3765 int _arg_index; 3766 uint32_t _bitmap_shifter; 3767 int _reset_on_ext; 3768 }; 3769 3770 int 3771 ieee80211_radiotap_iterator_init(struct ieee80211_radiotap_iterator *iterator, 3772 struct ieee80211_radiotap_header *radiotap_header, 3773 int max_length, 3774 const struct ieee80211_radiotap_vendor_namespaces *vns); 3775 3776 int 3777 ieee80211_radiotap_iterator_next(struct ieee80211_radiotap_iterator *iterator); 3778 3779 3780 extern const unsigned char rfc1042_header[6]; 3781 extern const unsigned char bridge_tunnel_header[6]; 3782 3783 /** 3784 * ieee80211_get_hdrlen_from_skb - get header length from data 3785 * 3786 * @skb: the frame 3787 * 3788 * Given an skb with a raw 802.11 header at the data pointer this function 3789 * returns the 802.11 header length. 3790 * 3791 * Return: The 802.11 header length in bytes (not including encryption 3792 * headers). Or 0 if the data in the sk_buff is too short to contain a valid 3793 * 802.11 header. 3794 */ 3795 unsigned int ieee80211_get_hdrlen_from_skb(const struct sk_buff *skb); 3796 3797 /** 3798 * ieee80211_hdrlen - get header length in bytes from frame control 3799 * @fc: frame control field in little-endian format 3800 * Return: The header length in bytes. 3801 */ 3802 unsigned int __attribute_const__ ieee80211_hdrlen(__le16 fc); 3803 3804 /** 3805 * ieee80211_get_mesh_hdrlen - get mesh extension header length 3806 * @meshhdr: the mesh extension header, only the flags field 3807 * (first byte) will be accessed 3808 * Return: The length of the extension header, which is always at 3809 * least 6 bytes and at most 18 if address 5 and 6 are present. 3810 */ 3811 unsigned int ieee80211_get_mesh_hdrlen(struct ieee80211s_hdr *meshhdr); 3812 3813 /** 3814 * DOC: Data path helpers 3815 * 3816 * In addition to generic utilities, cfg80211 also offers 3817 * functions that help implement the data path for devices 3818 * that do not do the 802.11/802.3 conversion on the device. 3819 */ 3820 3821 /** 3822 * ieee80211_data_to_8023 - convert an 802.11 data frame to 802.3 3823 * @skb: the 802.11 data frame 3824 * @addr: the device MAC address 3825 * @iftype: the virtual interface type 3826 * Return: 0 on success. Non-zero on error. 3827 */ 3828 int ieee80211_data_to_8023(struct sk_buff *skb, const u8 *addr, 3829 enum nl80211_iftype iftype); 3830 3831 /** 3832 * ieee80211_data_from_8023 - convert an 802.3 frame to 802.11 3833 * @skb: the 802.3 frame 3834 * @addr: the device MAC address 3835 * @iftype: the virtual interface type 3836 * @bssid: the network bssid (used only for iftype STATION and ADHOC) 3837 * @qos: build 802.11 QoS data frame 3838 * Return: 0 on success, or a negative error code. 3839 */ 3840 int ieee80211_data_from_8023(struct sk_buff *skb, const u8 *addr, 3841 enum nl80211_iftype iftype, const u8 *bssid, 3842 bool qos); 3843 3844 /** 3845 * ieee80211_amsdu_to_8023s - decode an IEEE 802.11n A-MSDU frame 3846 * 3847 * Decode an IEEE 802.11n A-MSDU frame and convert it to a list of 3848 * 802.3 frames. The @list will be empty if the decode fails. The 3849 * @skb is consumed after the function returns. 3850 * 3851 * @skb: The input IEEE 802.11n A-MSDU frame. 3852 * @list: The output list of 802.3 frames. It must be allocated and 3853 * initialized by by the caller. 3854 * @addr: The device MAC address. 3855 * @iftype: The device interface type. 3856 * @extra_headroom: The hardware extra headroom for SKBs in the @list. 3857 * @has_80211_header: Set it true if SKB is with IEEE 802.11 header. 3858 */ 3859 void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list, 3860 const u8 *addr, enum nl80211_iftype iftype, 3861 const unsigned int extra_headroom, 3862 bool has_80211_header); 3863 3864 /** 3865 * cfg80211_classify8021d - determine the 802.1p/1d tag for a data frame 3866 * @skb: the data frame 3867 * @qos_map: Interworking QoS mapping or %NULL if not in use 3868 * Return: The 802.1p/1d tag. 3869 */ 3870 unsigned int cfg80211_classify8021d(struct sk_buff *skb, 3871 struct cfg80211_qos_map *qos_map); 3872 3873 /** 3874 * cfg80211_find_ie - find information element in data 3875 * 3876 * @eid: element ID 3877 * @ies: data consisting of IEs 3878 * @len: length of data 3879 * 3880 * Return: %NULL if the element ID could not be found or if 3881 * the element is invalid (claims to be longer than the given 3882 * data), or a pointer to the first byte of the requested 3883 * element, that is the byte containing the element ID. 3884 * 3885 * Note: There are no checks on the element length other than 3886 * having to fit into the given data. 3887 */ 3888 const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len); 3889 3890 /** 3891 * cfg80211_find_vendor_ie - find vendor specific information element in data 3892 * 3893 * @oui: vendor OUI 3894 * @oui_type: vendor-specific OUI type 3895 * @ies: data consisting of IEs 3896 * @len: length of data 3897 * 3898 * Return: %NULL if the vendor specific element ID could not be found or if the 3899 * element is invalid (claims to be longer than the given data), or a pointer to 3900 * the first byte of the requested element, that is the byte containing the 3901 * element ID. 3902 * 3903 * Note: There are no checks on the element length other than having to fit into 3904 * the given data. 3905 */ 3906 const u8 *cfg80211_find_vendor_ie(unsigned int oui, u8 oui_type, 3907 const u8 *ies, int len); 3908 3909 /** 3910 * DOC: Regulatory enforcement infrastructure 3911 * 3912 * TODO 3913 */ 3914 3915 /** 3916 * regulatory_hint - driver hint to the wireless core a regulatory domain 3917 * @wiphy: the wireless device giving the hint (used only for reporting 3918 * conflicts) 3919 * @alpha2: the ISO/IEC 3166 alpha2 the driver claims its regulatory domain 3920 * should be in. If @rd is set this should be NULL. Note that if you 3921 * set this to NULL you should still set rd->alpha2 to some accepted 3922 * alpha2. 3923 * 3924 * Wireless drivers can use this function to hint to the wireless core 3925 * what it believes should be the current regulatory domain by 3926 * giving it an ISO/IEC 3166 alpha2 country code it knows its regulatory 3927 * domain should be in or by providing a completely build regulatory domain. 3928 * If the driver provides an ISO/IEC 3166 alpha2 userspace will be queried 3929 * for a regulatory domain structure for the respective country. 3930 * 3931 * The wiphy must have been registered to cfg80211 prior to this call. 3932 * For cfg80211 drivers this means you must first use wiphy_register(), 3933 * for mac80211 drivers you must first use ieee80211_register_hw(). 3934 * 3935 * Drivers should check the return value, its possible you can get 3936 * an -ENOMEM. 3937 * 3938 * Return: 0 on success. -ENOMEM. 3939 */ 3940 int regulatory_hint(struct wiphy *wiphy, const char *alpha2); 3941 3942 /** 3943 * regulatory_set_wiphy_regd - set regdom info for self managed drivers 3944 * @wiphy: the wireless device we want to process the regulatory domain on 3945 * @rd: the regulatory domain informatoin to use for this wiphy 3946 * 3947 * Set the regulatory domain information for self-managed wiphys, only they 3948 * may use this function. See %REGULATORY_WIPHY_SELF_MANAGED for more 3949 * information. 3950 * 3951 * Return: 0 on success. -EINVAL, -EPERM 3952 */ 3953 int regulatory_set_wiphy_regd(struct wiphy *wiphy, 3954 struct ieee80211_regdomain *rd); 3955 3956 /** 3957 * regulatory_set_wiphy_regd_sync_rtnl - set regdom for self-managed drivers 3958 * @wiphy: the wireless device we want to process the regulatory domain on 3959 * @rd: the regulatory domain information to use for this wiphy 3960 * 3961 * This functions requires the RTNL to be held and applies the new regdomain 3962 * synchronously to this wiphy. For more details see 3963 * regulatory_set_wiphy_regd(). 3964 * 3965 * Return: 0 on success. -EINVAL, -EPERM 3966 */ 3967 int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy, 3968 struct ieee80211_regdomain *rd); 3969 3970 /** 3971 * wiphy_apply_custom_regulatory - apply a custom driver regulatory domain 3972 * @wiphy: the wireless device we want to process the regulatory domain on 3973 * @regd: the custom regulatory domain to use for this wiphy 3974 * 3975 * Drivers can sometimes have custom regulatory domains which do not apply 3976 * to a specific country. Drivers can use this to apply such custom regulatory 3977 * domains. This routine must be called prior to wiphy registration. The 3978 * custom regulatory domain will be trusted completely and as such previous 3979 * default channel settings will be disregarded. If no rule is found for a 3980 * channel on the regulatory domain the channel will be disabled. 3981 * Drivers using this for a wiphy should also set the wiphy flag 3982 * REGULATORY_CUSTOM_REG or cfg80211 will set it for the wiphy 3983 * that called this helper. 3984 */ 3985 void wiphy_apply_custom_regulatory(struct wiphy *wiphy, 3986 const struct ieee80211_regdomain *regd); 3987 3988 /** 3989 * freq_reg_info - get regulatory information for the given frequency 3990 * @wiphy: the wiphy for which we want to process this rule for 3991 * @center_freq: Frequency in KHz for which we want regulatory information for 3992 * 3993 * Use this function to get the regulatory rule for a specific frequency on 3994 * a given wireless device. If the device has a specific regulatory domain 3995 * it wants to follow we respect that unless a country IE has been received 3996 * and processed already. 3997 * 3998 * Return: A valid pointer, or, when an error occurs, for example if no rule 3999 * can be found, the return value is encoded using ERR_PTR(). Use IS_ERR() to 4000 * check and PTR_ERR() to obtain the numeric return value. The numeric return 4001 * value will be -ERANGE if we determine the given center_freq does not even 4002 * have a regulatory rule for a frequency range in the center_freq's band. 4003 * See freq_in_rule_band() for our current definition of a band -- this is 4004 * purely subjective and right now it's 802.11 specific. 4005 */ 4006 const struct ieee80211_reg_rule *freq_reg_info(struct wiphy *wiphy, 4007 u32 center_freq); 4008 4009 /** 4010 * reg_initiator_name - map regulatory request initiator enum to name 4011 * @initiator: the regulatory request initiator 4012 * 4013 * You can use this to map the regulatory request initiator enum to a 4014 * proper string representation. 4015 */ 4016 const char *reg_initiator_name(enum nl80211_reg_initiator initiator); 4017 4018 /* 4019 * callbacks for asynchronous cfg80211 methods, notification 4020 * functions and BSS handling helpers 4021 */ 4022 4023 /** 4024 * cfg80211_scan_done - notify that scan finished 4025 * 4026 * @request: the corresponding scan request 4027 * @aborted: set to true if the scan was aborted for any reason, 4028 * userspace will be notified of that 4029 */ 4030 void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted); 4031 4032 /** 4033 * cfg80211_sched_scan_results - notify that new scan results are available 4034 * 4035 * @wiphy: the wiphy which got scheduled scan results 4036 */ 4037 void cfg80211_sched_scan_results(struct wiphy *wiphy); 4038 4039 /** 4040 * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped 4041 * 4042 * @wiphy: the wiphy on which the scheduled scan stopped 4043 * 4044 * The driver can call this function to inform cfg80211 that the 4045 * scheduled scan had to be stopped, for whatever reason. The driver 4046 * is then called back via the sched_scan_stop operation when done. 4047 */ 4048 void cfg80211_sched_scan_stopped(struct wiphy *wiphy); 4049 4050 /** 4051 * cfg80211_sched_scan_stopped_rtnl - notify that the scheduled scan has stopped 4052 * 4053 * @wiphy: the wiphy on which the scheduled scan stopped 4054 * 4055 * The driver can call this function to inform cfg80211 that the 4056 * scheduled scan had to be stopped, for whatever reason. The driver 4057 * is then called back via the sched_scan_stop operation when done. 4058 * This function should be called with rtnl locked. 4059 */ 4060 void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy); 4061 4062 /** 4063 * cfg80211_inform_bss_frame_data - inform cfg80211 of a received BSS frame 4064 * @wiphy: the wiphy reporting the BSS 4065 * @data: the BSS metadata 4066 * @mgmt: the management frame (probe response or beacon) 4067 * @len: length of the management frame 4068 * @gfp: context flags 4069 * 4070 * This informs cfg80211 that BSS information was found and 4071 * the BSS should be updated/added. 4072 * 4073 * Return: A referenced struct, must be released with cfg80211_put_bss()! 4074 * Or %NULL on error. 4075 */ 4076 struct cfg80211_bss * __must_check 4077 cfg80211_inform_bss_frame_data(struct wiphy *wiphy, 4078 struct cfg80211_inform_bss *data, 4079 struct ieee80211_mgmt *mgmt, size_t len, 4080 gfp_t gfp); 4081 4082 static inline struct cfg80211_bss * __must_check 4083 cfg80211_inform_bss_width_frame(struct wiphy *wiphy, 4084 struct ieee80211_channel *rx_channel, 4085 enum nl80211_bss_scan_width scan_width, 4086 struct ieee80211_mgmt *mgmt, size_t len, 4087 s32 signal, gfp_t gfp) 4088 { 4089 struct cfg80211_inform_bss data = { 4090 .chan = rx_channel, 4091 .scan_width = scan_width, 4092 .signal = signal, 4093 }; 4094 4095 return cfg80211_inform_bss_frame_data(wiphy, &data, mgmt, len, gfp); 4096 } 4097 4098 static inline struct cfg80211_bss * __must_check 4099 cfg80211_inform_bss_frame(struct wiphy *wiphy, 4100 struct ieee80211_channel *rx_channel, 4101 struct ieee80211_mgmt *mgmt, size_t len, 4102 s32 signal, gfp_t gfp) 4103 { 4104 struct cfg80211_inform_bss data = { 4105 .chan = rx_channel, 4106 .scan_width = NL80211_BSS_CHAN_WIDTH_20, 4107 .signal = signal, 4108 }; 4109 4110 return cfg80211_inform_bss_frame_data(wiphy, &data, mgmt, len, gfp); 4111 } 4112 4113 /** 4114 * enum cfg80211_bss_frame_type - frame type that the BSS data came from 4115 * @CFG80211_BSS_FTYPE_UNKNOWN: driver doesn't know whether the data is 4116 * from a beacon or probe response 4117 * @CFG80211_BSS_FTYPE_BEACON: data comes from a beacon 4118 * @CFG80211_BSS_FTYPE_PRESP: data comes from a probe response 4119 */ 4120 enum cfg80211_bss_frame_type { 4121 CFG80211_BSS_FTYPE_UNKNOWN, 4122 CFG80211_BSS_FTYPE_BEACON, 4123 CFG80211_BSS_FTYPE_PRESP, 4124 }; 4125 4126 /** 4127 * cfg80211_inform_bss_data - inform cfg80211 of a new BSS 4128 * 4129 * @wiphy: the wiphy reporting the BSS 4130 * @data: the BSS metadata 4131 * @ftype: frame type (if known) 4132 * @bssid: the BSSID of the BSS 4133 * @tsf: the TSF sent by the peer in the beacon/probe response (or 0) 4134 * @capability: the capability field sent by the peer 4135 * @beacon_interval: the beacon interval announced by the peer 4136 * @ie: additional IEs sent by the peer 4137 * @ielen: length of the additional IEs 4138 * @gfp: context flags 4139 * 4140 * This informs cfg80211 that BSS information was found and 4141 * the BSS should be updated/added. 4142 * 4143 * Return: A referenced struct, must be released with cfg80211_put_bss()! 4144 * Or %NULL on error. 4145 */ 4146 struct cfg80211_bss * __must_check 4147 cfg80211_inform_bss_data(struct wiphy *wiphy, 4148 struct cfg80211_inform_bss *data, 4149 enum cfg80211_bss_frame_type ftype, 4150 const u8 *bssid, u64 tsf, u16 capability, 4151 u16 beacon_interval, const u8 *ie, size_t ielen, 4152 gfp_t gfp); 4153 4154 static inline struct cfg80211_bss * __must_check 4155 cfg80211_inform_bss_width(struct wiphy *wiphy, 4156 struct ieee80211_channel *rx_channel, 4157 enum nl80211_bss_scan_width scan_width, 4158 enum cfg80211_bss_frame_type ftype, 4159 const u8 *bssid, u64 tsf, u16 capability, 4160 u16 beacon_interval, const u8 *ie, size_t ielen, 4161 s32 signal, gfp_t gfp) 4162 { 4163 struct cfg80211_inform_bss data = { 4164 .chan = rx_channel, 4165 .scan_width = scan_width, 4166 .signal = signal, 4167 }; 4168 4169 return cfg80211_inform_bss_data(wiphy, &data, ftype, bssid, tsf, 4170 capability, beacon_interval, ie, ielen, 4171 gfp); 4172 } 4173 4174 static inline struct cfg80211_bss * __must_check 4175 cfg80211_inform_bss(struct wiphy *wiphy, 4176 struct ieee80211_channel *rx_channel, 4177 enum cfg80211_bss_frame_type ftype, 4178 const u8 *bssid, u64 tsf, u16 capability, 4179 u16 beacon_interval, const u8 *ie, size_t ielen, 4180 s32 signal, gfp_t gfp) 4181 { 4182 struct cfg80211_inform_bss data = { 4183 .chan = rx_channel, 4184 .scan_width = NL80211_BSS_CHAN_WIDTH_20, 4185 .signal = signal, 4186 }; 4187 4188 return cfg80211_inform_bss_data(wiphy, &data, ftype, bssid, tsf, 4189 capability, beacon_interval, ie, ielen, 4190 gfp); 4191 } 4192 4193 struct cfg80211_bss *cfg80211_get_bss(struct wiphy *wiphy, 4194 struct ieee80211_channel *channel, 4195 const u8 *bssid, 4196 const u8 *ssid, size_t ssid_len, 4197 enum ieee80211_bss_type bss_type, 4198 enum ieee80211_privacy); 4199 static inline struct cfg80211_bss * 4200 cfg80211_get_ibss(struct wiphy *wiphy, 4201 struct ieee80211_channel *channel, 4202 const u8 *ssid, size_t ssid_len) 4203 { 4204 return cfg80211_get_bss(wiphy, channel, NULL, ssid, ssid_len, 4205 IEEE80211_BSS_TYPE_IBSS, 4206 IEEE80211_PRIVACY_ANY); 4207 } 4208 4209 /** 4210 * cfg80211_ref_bss - reference BSS struct 4211 * @wiphy: the wiphy this BSS struct belongs to 4212 * @bss: the BSS struct to reference 4213 * 4214 * Increments the refcount of the given BSS struct. 4215 */ 4216 void cfg80211_ref_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4217 4218 /** 4219 * cfg80211_put_bss - unref BSS struct 4220 * @wiphy: the wiphy this BSS struct belongs to 4221 * @bss: the BSS struct 4222 * 4223 * Decrements the refcount of the given BSS struct. 4224 */ 4225 void cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4226 4227 /** 4228 * cfg80211_unlink_bss - unlink BSS from internal data structures 4229 * @wiphy: the wiphy 4230 * @bss: the bss to remove 4231 * 4232 * This function removes the given BSS from the internal data structures 4233 * thereby making it no longer show up in scan results etc. Use this 4234 * function when you detect a BSS is gone. Normally BSSes will also time 4235 * out, so it is not necessary to use this function at all. 4236 */ 4237 void cfg80211_unlink_bss(struct wiphy *wiphy, struct cfg80211_bss *bss); 4238 4239 static inline enum nl80211_bss_scan_width 4240 cfg80211_chandef_to_scan_width(const struct cfg80211_chan_def *chandef) 4241 { 4242 switch (chandef->width) { 4243 case NL80211_CHAN_WIDTH_5: 4244 return NL80211_BSS_CHAN_WIDTH_5; 4245 case NL80211_CHAN_WIDTH_10: 4246 return NL80211_BSS_CHAN_WIDTH_10; 4247 default: 4248 return NL80211_BSS_CHAN_WIDTH_20; 4249 } 4250 } 4251 4252 /** 4253 * cfg80211_rx_mlme_mgmt - notification of processed MLME management frame 4254 * @dev: network device 4255 * @buf: authentication frame (header + body) 4256 * @len: length of the frame data 4257 * 4258 * This function is called whenever an authentication, disassociation or 4259 * deauthentication frame has been received and processed in station mode. 4260 * After being asked to authenticate via cfg80211_ops::auth() the driver must 4261 * call either this function or cfg80211_auth_timeout(). 4262 * After being asked to associate via cfg80211_ops::assoc() the driver must 4263 * call either this function or cfg80211_auth_timeout(). 4264 * While connected, the driver must calls this for received and processed 4265 * disassociation and deauthentication frames. If the frame couldn't be used 4266 * because it was unprotected, the driver must call the function 4267 * cfg80211_rx_unprot_mlme_mgmt() instead. 4268 * 4269 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4270 */ 4271 void cfg80211_rx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); 4272 4273 /** 4274 * cfg80211_auth_timeout - notification of timed out authentication 4275 * @dev: network device 4276 * @addr: The MAC address of the device with which the authentication timed out 4277 * 4278 * This function may sleep. The caller must hold the corresponding wdev's 4279 * mutex. 4280 */ 4281 void cfg80211_auth_timeout(struct net_device *dev, const u8 *addr); 4282 4283 /** 4284 * cfg80211_rx_assoc_resp - notification of processed association response 4285 * @dev: network device 4286 * @bss: the BSS that association was requested with, ownership of the pointer 4287 * moves to cfg80211 in this call 4288 * @buf: authentication frame (header + body) 4289 * @len: length of the frame data 4290 * @uapsd_queues: bitmap of ACs configured to uapsd. -1 if n/a. 4291 * 4292 * After being asked to associate via cfg80211_ops::assoc() the driver must 4293 * call either this function or cfg80211_auth_timeout(). 4294 * 4295 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4296 */ 4297 void cfg80211_rx_assoc_resp(struct net_device *dev, 4298 struct cfg80211_bss *bss, 4299 const u8 *buf, size_t len, 4300 int uapsd_queues); 4301 4302 /** 4303 * cfg80211_assoc_timeout - notification of timed out association 4304 * @dev: network device 4305 * @bss: The BSS entry with which association timed out. 4306 * 4307 * This function may sleep. The caller must hold the corresponding wdev's mutex. 4308 */ 4309 void cfg80211_assoc_timeout(struct net_device *dev, struct cfg80211_bss *bss); 4310 4311 /** 4312 * cfg80211_tx_mlme_mgmt - notification of transmitted deauth/disassoc frame 4313 * @dev: network device 4314 * @buf: 802.11 frame (header + body) 4315 * @len: length of the frame data 4316 * 4317 * This function is called whenever deauthentication has been processed in 4318 * station mode. This includes both received deauthentication frames and 4319 * locally generated ones. This function may sleep. The caller must hold the 4320 * corresponding wdev's mutex. 4321 */ 4322 void cfg80211_tx_mlme_mgmt(struct net_device *dev, const u8 *buf, size_t len); 4323 4324 /** 4325 * cfg80211_rx_unprot_mlme_mgmt - notification of unprotected mlme mgmt frame 4326 * @dev: network device 4327 * @buf: deauthentication frame (header + body) 4328 * @len: length of the frame data 4329 * 4330 * This function is called whenever a received deauthentication or dissassoc 4331 * frame has been dropped in station mode because of MFP being used but the 4332 * frame was not protected. This function may sleep. 4333 */ 4334 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, 4335 const u8 *buf, size_t len); 4336 4337 /** 4338 * cfg80211_michael_mic_failure - notification of Michael MIC failure (TKIP) 4339 * @dev: network device 4340 * @addr: The source MAC address of the frame 4341 * @key_type: The key type that the received frame used 4342 * @key_id: Key identifier (0..3). Can be -1 if missing. 4343 * @tsc: The TSC value of the frame that generated the MIC failure (6 octets) 4344 * @gfp: allocation flags 4345 * 4346 * This function is called whenever the local MAC detects a MIC failure in a 4347 * received frame. This matches with MLME-MICHAELMICFAILURE.indication() 4348 * primitive. 4349 */ 4350 void cfg80211_michael_mic_failure(struct net_device *dev, const u8 *addr, 4351 enum nl80211_key_type key_type, int key_id, 4352 const u8 *tsc, gfp_t gfp); 4353 4354 /** 4355 * cfg80211_ibss_joined - notify cfg80211 that device joined an IBSS 4356 * 4357 * @dev: network device 4358 * @bssid: the BSSID of the IBSS joined 4359 * @channel: the channel of the IBSS joined 4360 * @gfp: allocation flags 4361 * 4362 * This function notifies cfg80211 that the device joined an IBSS or 4363 * switched to a different BSSID. Before this function can be called, 4364 * either a beacon has to have been received from the IBSS, or one of 4365 * the cfg80211_inform_bss{,_frame} functions must have been called 4366 * with the locally generated beacon -- this guarantees that there is 4367 * always a scan result for this IBSS. cfg80211 will handle the rest. 4368 */ 4369 void cfg80211_ibss_joined(struct net_device *dev, const u8 *bssid, 4370 struct ieee80211_channel *channel, gfp_t gfp); 4371 4372 /** 4373 * cfg80211_notify_new_candidate - notify cfg80211 of a new mesh peer candidate 4374 * 4375 * @dev: network device 4376 * @macaddr: the MAC address of the new candidate 4377 * @ie: information elements advertised by the peer candidate 4378 * @ie_len: lenght of the information elements buffer 4379 * @gfp: allocation flags 4380 * 4381 * This function notifies cfg80211 that the mesh peer candidate has been 4382 * detected, most likely via a beacon or, less likely, via a probe response. 4383 * cfg80211 then sends a notification to userspace. 4384 */ 4385 void cfg80211_notify_new_peer_candidate(struct net_device *dev, 4386 const u8 *macaddr, const u8 *ie, u8 ie_len, gfp_t gfp); 4387 4388 /** 4389 * DOC: RFkill integration 4390 * 4391 * RFkill integration in cfg80211 is almost invisible to drivers, 4392 * as cfg80211 automatically registers an rfkill instance for each 4393 * wireless device it knows about. Soft kill is also translated 4394 * into disconnecting and turning all interfaces off, drivers are 4395 * expected to turn off the device when all interfaces are down. 4396 * 4397 * However, devices may have a hard RFkill line, in which case they 4398 * also need to interact with the rfkill subsystem, via cfg80211. 4399 * They can do this with a few helper functions documented here. 4400 */ 4401 4402 /** 4403 * wiphy_rfkill_set_hw_state - notify cfg80211 about hw block state 4404 * @wiphy: the wiphy 4405 * @blocked: block status 4406 */ 4407 void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked); 4408 4409 /** 4410 * wiphy_rfkill_start_polling - start polling rfkill 4411 * @wiphy: the wiphy 4412 */ 4413 void wiphy_rfkill_start_polling(struct wiphy *wiphy); 4414 4415 /** 4416 * wiphy_rfkill_stop_polling - stop polling rfkill 4417 * @wiphy: the wiphy 4418 */ 4419 void wiphy_rfkill_stop_polling(struct wiphy *wiphy); 4420 4421 /** 4422 * DOC: Vendor commands 4423 * 4424 * Occasionally, there are special protocol or firmware features that 4425 * can't be implemented very openly. For this and similar cases, the 4426 * vendor command functionality allows implementing the features with 4427 * (typically closed-source) userspace and firmware, using nl80211 as 4428 * the configuration mechanism. 4429 * 4430 * A driver supporting vendor commands must register them as an array 4431 * in struct wiphy, with handlers for each one, each command has an 4432 * OUI and sub command ID to identify it. 4433 * 4434 * Note that this feature should not be (ab)used to implement protocol 4435 * features that could openly be shared across drivers. In particular, 4436 * it must never be required to use vendor commands to implement any 4437 * "normal" functionality that higher-level userspace like connection 4438 * managers etc. need. 4439 */ 4440 4441 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 4442 enum nl80211_commands cmd, 4443 enum nl80211_attrs attr, 4444 int approxlen); 4445 4446 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 4447 struct wireless_dev *wdev, 4448 enum nl80211_commands cmd, 4449 enum nl80211_attrs attr, 4450 int vendor_event_idx, 4451 int approxlen, gfp_t gfp); 4452 4453 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp); 4454 4455 /** 4456 * cfg80211_vendor_cmd_alloc_reply_skb - allocate vendor command reply 4457 * @wiphy: the wiphy 4458 * @approxlen: an upper bound of the length of the data that will 4459 * be put into the skb 4460 * 4461 * This function allocates and pre-fills an skb for a reply to 4462 * a vendor command. Since it is intended for a reply, calling 4463 * it outside of a vendor command's doit() operation is invalid. 4464 * 4465 * The returned skb is pre-filled with some identifying data in 4466 * a way that any data that is put into the skb (with skb_put(), 4467 * nla_put() or similar) will end up being within the 4468 * %NL80211_ATTR_VENDOR_DATA attribute, so all that needs to be done 4469 * with the skb is adding data for the corresponding userspace tool 4470 * which can then read that data out of the vendor data attribute. 4471 * You must not modify the skb in any other way. 4472 * 4473 * When done, call cfg80211_vendor_cmd_reply() with the skb and return 4474 * its error code as the result of the doit() operation. 4475 * 4476 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4477 */ 4478 static inline struct sk_buff * 4479 cfg80211_vendor_cmd_alloc_reply_skb(struct wiphy *wiphy, int approxlen) 4480 { 4481 return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_VENDOR, 4482 NL80211_ATTR_VENDOR_DATA, approxlen); 4483 } 4484 4485 /** 4486 * cfg80211_vendor_cmd_reply - send the reply skb 4487 * @skb: The skb, must have been allocated with 4488 * cfg80211_vendor_cmd_alloc_reply_skb() 4489 * 4490 * Since calling this function will usually be the last thing 4491 * before returning from the vendor command doit() you should 4492 * return the error code. Note that this function consumes the 4493 * skb regardless of the return value. 4494 * 4495 * Return: An error code or 0 on success. 4496 */ 4497 int cfg80211_vendor_cmd_reply(struct sk_buff *skb); 4498 4499 /** 4500 * cfg80211_vendor_event_alloc - allocate vendor-specific event skb 4501 * @wiphy: the wiphy 4502 * @wdev: the wireless device 4503 * @event_idx: index of the vendor event in the wiphy's vendor_events 4504 * @approxlen: an upper bound of the length of the data that will 4505 * be put into the skb 4506 * @gfp: allocation flags 4507 * 4508 * This function allocates and pre-fills an skb for an event on the 4509 * vendor-specific multicast group. 4510 * 4511 * If wdev != NULL, both the ifindex and identifier of the specified 4512 * wireless device are added to the event message before the vendor data 4513 * attribute. 4514 * 4515 * When done filling the skb, call cfg80211_vendor_event() with the 4516 * skb to send the event. 4517 * 4518 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4519 */ 4520 static inline struct sk_buff * 4521 cfg80211_vendor_event_alloc(struct wiphy *wiphy, struct wireless_dev *wdev, 4522 int approxlen, int event_idx, gfp_t gfp) 4523 { 4524 return __cfg80211_alloc_event_skb(wiphy, wdev, NL80211_CMD_VENDOR, 4525 NL80211_ATTR_VENDOR_DATA, 4526 event_idx, approxlen, gfp); 4527 } 4528 4529 /** 4530 * cfg80211_vendor_event - send the event 4531 * @skb: The skb, must have been allocated with cfg80211_vendor_event_alloc() 4532 * @gfp: allocation flags 4533 * 4534 * This function sends the given @skb, which must have been allocated 4535 * by cfg80211_vendor_event_alloc(), as an event. It always consumes it. 4536 */ 4537 static inline void cfg80211_vendor_event(struct sk_buff *skb, gfp_t gfp) 4538 { 4539 __cfg80211_send_event_skb(skb, gfp); 4540 } 4541 4542 #ifdef CONFIG_NL80211_TESTMODE 4543 /** 4544 * DOC: Test mode 4545 * 4546 * Test mode is a set of utility functions to allow drivers to 4547 * interact with driver-specific tools to aid, for instance, 4548 * factory programming. 4549 * 4550 * This chapter describes how drivers interact with it, for more 4551 * information see the nl80211 book's chapter on it. 4552 */ 4553 4554 /** 4555 * cfg80211_testmode_alloc_reply_skb - allocate testmode reply 4556 * @wiphy: the wiphy 4557 * @approxlen: an upper bound of the length of the data that will 4558 * be put into the skb 4559 * 4560 * This function allocates and pre-fills an skb for a reply to 4561 * the testmode command. Since it is intended for a reply, calling 4562 * it outside of the @testmode_cmd operation is invalid. 4563 * 4564 * The returned skb is pre-filled with the wiphy index and set up in 4565 * a way that any data that is put into the skb (with skb_put(), 4566 * nla_put() or similar) will end up being within the 4567 * %NL80211_ATTR_TESTDATA attribute, so all that needs to be done 4568 * with the skb is adding data for the corresponding userspace tool 4569 * which can then read that data out of the testdata attribute. You 4570 * must not modify the skb in any other way. 4571 * 4572 * When done, call cfg80211_testmode_reply() with the skb and return 4573 * its error code as the result of the @testmode_cmd operation. 4574 * 4575 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4576 */ 4577 static inline struct sk_buff * 4578 cfg80211_testmode_alloc_reply_skb(struct wiphy *wiphy, int approxlen) 4579 { 4580 return __cfg80211_alloc_reply_skb(wiphy, NL80211_CMD_TESTMODE, 4581 NL80211_ATTR_TESTDATA, approxlen); 4582 } 4583 4584 /** 4585 * cfg80211_testmode_reply - send the reply skb 4586 * @skb: The skb, must have been allocated with 4587 * cfg80211_testmode_alloc_reply_skb() 4588 * 4589 * Since calling this function will usually be the last thing 4590 * before returning from the @testmode_cmd you should return 4591 * the error code. Note that this function consumes the skb 4592 * regardless of the return value. 4593 * 4594 * Return: An error code or 0 on success. 4595 */ 4596 static inline int cfg80211_testmode_reply(struct sk_buff *skb) 4597 { 4598 return cfg80211_vendor_cmd_reply(skb); 4599 } 4600 4601 /** 4602 * cfg80211_testmode_alloc_event_skb - allocate testmode event 4603 * @wiphy: the wiphy 4604 * @approxlen: an upper bound of the length of the data that will 4605 * be put into the skb 4606 * @gfp: allocation flags 4607 * 4608 * This function allocates and pre-fills an skb for an event on the 4609 * testmode multicast group. 4610 * 4611 * The returned skb is set up in the same way as with 4612 * cfg80211_testmode_alloc_reply_skb() but prepared for an event. As 4613 * there, you should simply add data to it that will then end up in the 4614 * %NL80211_ATTR_TESTDATA attribute. Again, you must not modify the skb 4615 * in any other way. 4616 * 4617 * When done filling the skb, call cfg80211_testmode_event() with the 4618 * skb to send the event. 4619 * 4620 * Return: An allocated and pre-filled skb. %NULL if any errors happen. 4621 */ 4622 static inline struct sk_buff * 4623 cfg80211_testmode_alloc_event_skb(struct wiphy *wiphy, int approxlen, gfp_t gfp) 4624 { 4625 return __cfg80211_alloc_event_skb(wiphy, NULL, NL80211_CMD_TESTMODE, 4626 NL80211_ATTR_TESTDATA, -1, 4627 approxlen, gfp); 4628 } 4629 4630 /** 4631 * cfg80211_testmode_event - send the event 4632 * @skb: The skb, must have been allocated with 4633 * cfg80211_testmode_alloc_event_skb() 4634 * @gfp: allocation flags 4635 * 4636 * This function sends the given @skb, which must have been allocated 4637 * by cfg80211_testmode_alloc_event_skb(), as an event. It always 4638 * consumes it. 4639 */ 4640 static inline void cfg80211_testmode_event(struct sk_buff *skb, gfp_t gfp) 4641 { 4642 __cfg80211_send_event_skb(skb, gfp); 4643 } 4644 4645 #define CFG80211_TESTMODE_CMD(cmd) .testmode_cmd = (cmd), 4646 #define CFG80211_TESTMODE_DUMP(cmd) .testmode_dump = (cmd), 4647 #else 4648 #define CFG80211_TESTMODE_CMD(cmd) 4649 #define CFG80211_TESTMODE_DUMP(cmd) 4650 #endif 4651 4652 /** 4653 * cfg80211_connect_result - notify cfg80211 of connection result 4654 * 4655 * @dev: network device 4656 * @bssid: the BSSID of the AP 4657 * @req_ie: association request IEs (maybe be %NULL) 4658 * @req_ie_len: association request IEs length 4659 * @resp_ie: association response IEs (may be %NULL) 4660 * @resp_ie_len: assoc response IEs length 4661 * @status: status code, 0 for successful connection, use 4662 * %WLAN_STATUS_UNSPECIFIED_FAILURE if your device cannot give you 4663 * the real status code for failures. 4664 * @gfp: allocation flags 4665 * 4666 * It should be called by the underlying driver whenever connect() has 4667 * succeeded. 4668 */ 4669 void cfg80211_connect_result(struct net_device *dev, const u8 *bssid, 4670 const u8 *req_ie, size_t req_ie_len, 4671 const u8 *resp_ie, size_t resp_ie_len, 4672 u16 status, gfp_t gfp); 4673 4674 /** 4675 * cfg80211_roamed - notify cfg80211 of roaming 4676 * 4677 * @dev: network device 4678 * @channel: the channel of the new AP 4679 * @bssid: the BSSID of the new AP 4680 * @req_ie: association request IEs (maybe be %NULL) 4681 * @req_ie_len: association request IEs length 4682 * @resp_ie: association response IEs (may be %NULL) 4683 * @resp_ie_len: assoc response IEs length 4684 * @gfp: allocation flags 4685 * 4686 * It should be called by the underlying driver whenever it roamed 4687 * from one AP to another while connected. 4688 */ 4689 void cfg80211_roamed(struct net_device *dev, 4690 struct ieee80211_channel *channel, 4691 const u8 *bssid, 4692 const u8 *req_ie, size_t req_ie_len, 4693 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 4694 4695 /** 4696 * cfg80211_roamed_bss - notify cfg80211 of roaming 4697 * 4698 * @dev: network device 4699 * @bss: entry of bss to which STA got roamed 4700 * @req_ie: association request IEs (maybe be %NULL) 4701 * @req_ie_len: association request IEs length 4702 * @resp_ie: association response IEs (may be %NULL) 4703 * @resp_ie_len: assoc response IEs length 4704 * @gfp: allocation flags 4705 * 4706 * This is just a wrapper to notify cfg80211 of roaming event with driver 4707 * passing bss to avoid a race in timeout of the bss entry. It should be 4708 * called by the underlying driver whenever it roamed from one AP to another 4709 * while connected. Drivers which have roaming implemented in firmware 4710 * may use this function to avoid a race in bss entry timeout where the bss 4711 * entry of the new AP is seen in the driver, but gets timed out by the time 4712 * it is accessed in __cfg80211_roamed() due to delay in scheduling 4713 * rdev->event_work. In case of any failures, the reference is released 4714 * either in cfg80211_roamed_bss() or in __cfg80211_romed(), Otherwise, 4715 * it will be released while diconneting from the current bss. 4716 */ 4717 void cfg80211_roamed_bss(struct net_device *dev, struct cfg80211_bss *bss, 4718 const u8 *req_ie, size_t req_ie_len, 4719 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp); 4720 4721 /** 4722 * cfg80211_disconnected - notify cfg80211 that connection was dropped 4723 * 4724 * @dev: network device 4725 * @ie: information elements of the deauth/disassoc frame (may be %NULL) 4726 * @ie_len: length of IEs 4727 * @reason: reason code for the disconnection, set it to 0 if unknown 4728 * @locally_generated: disconnection was requested locally 4729 * @gfp: allocation flags 4730 * 4731 * After it calls this function, the driver should enter an idle state 4732 * and not try to connect to any AP any more. 4733 */ 4734 void cfg80211_disconnected(struct net_device *dev, u16 reason, 4735 const u8 *ie, size_t ie_len, 4736 bool locally_generated, gfp_t gfp); 4737 4738 /** 4739 * cfg80211_ready_on_channel - notification of remain_on_channel start 4740 * @wdev: wireless device 4741 * @cookie: the request cookie 4742 * @chan: The current channel (from remain_on_channel request) 4743 * @duration: Duration in milliseconds that the driver intents to remain on the 4744 * channel 4745 * @gfp: allocation flags 4746 */ 4747 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 4748 struct ieee80211_channel *chan, 4749 unsigned int duration, gfp_t gfp); 4750 4751 /** 4752 * cfg80211_remain_on_channel_expired - remain_on_channel duration expired 4753 * @wdev: wireless device 4754 * @cookie: the request cookie 4755 * @chan: The current channel (from remain_on_channel request) 4756 * @gfp: allocation flags 4757 */ 4758 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 4759 struct ieee80211_channel *chan, 4760 gfp_t gfp); 4761 4762 4763 /** 4764 * cfg80211_new_sta - notify userspace about station 4765 * 4766 * @dev: the netdev 4767 * @mac_addr: the station's address 4768 * @sinfo: the station information 4769 * @gfp: allocation flags 4770 */ 4771 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 4772 struct station_info *sinfo, gfp_t gfp); 4773 4774 /** 4775 * cfg80211_del_sta_sinfo - notify userspace about deletion of a station 4776 * @dev: the netdev 4777 * @mac_addr: the station's address 4778 * @sinfo: the station information/statistics 4779 * @gfp: allocation flags 4780 */ 4781 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 4782 struct station_info *sinfo, gfp_t gfp); 4783 4784 /** 4785 * cfg80211_del_sta - notify userspace about deletion of a station 4786 * 4787 * @dev: the netdev 4788 * @mac_addr: the station's address 4789 * @gfp: allocation flags 4790 */ 4791 static inline void cfg80211_del_sta(struct net_device *dev, 4792 const u8 *mac_addr, gfp_t gfp) 4793 { 4794 cfg80211_del_sta_sinfo(dev, mac_addr, NULL, gfp); 4795 } 4796 4797 /** 4798 * cfg80211_conn_failed - connection request failed notification 4799 * 4800 * @dev: the netdev 4801 * @mac_addr: the station's address 4802 * @reason: the reason for connection failure 4803 * @gfp: allocation flags 4804 * 4805 * Whenever a station tries to connect to an AP and if the station 4806 * could not connect to the AP as the AP has rejected the connection 4807 * for some reasons, this function is called. 4808 * 4809 * The reason for connection failure can be any of the value from 4810 * nl80211_connect_failed_reason enum 4811 */ 4812 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 4813 enum nl80211_connect_failed_reason reason, 4814 gfp_t gfp); 4815 4816 /** 4817 * cfg80211_rx_mgmt - notification of received, unprocessed management frame 4818 * @wdev: wireless device receiving the frame 4819 * @freq: Frequency on which the frame was received in MHz 4820 * @sig_dbm: signal strength in mBm, or 0 if unknown 4821 * @buf: Management frame (header + body) 4822 * @len: length of the frame data 4823 * @flags: flags, as defined in enum nl80211_rxmgmt_flags 4824 * 4825 * This function is called whenever an Action frame is received for a station 4826 * mode interface, but is not processed in kernel. 4827 * 4828 * Return: %true if a user space application has registered for this frame. 4829 * For action frames, that makes it responsible for rejecting unrecognized 4830 * action frames; %false otherwise, in which case for action frames the 4831 * driver is responsible for rejecting the frame. 4832 */ 4833 bool cfg80211_rx_mgmt(struct wireless_dev *wdev, int freq, int sig_dbm, 4834 const u8 *buf, size_t len, u32 flags); 4835 4836 /** 4837 * cfg80211_mgmt_tx_status - notification of TX status for management frame 4838 * @wdev: wireless device receiving the frame 4839 * @cookie: Cookie returned by cfg80211_ops::mgmt_tx() 4840 * @buf: Management frame (header + body) 4841 * @len: length of the frame data 4842 * @ack: Whether frame was acknowledged 4843 * @gfp: context flags 4844 * 4845 * This function is called whenever a management frame was requested to be 4846 * transmitted with cfg80211_ops::mgmt_tx() to report the TX status of the 4847 * transmission attempt. 4848 */ 4849 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 4850 const u8 *buf, size_t len, bool ack, gfp_t gfp); 4851 4852 4853 /** 4854 * cfg80211_cqm_rssi_notify - connection quality monitoring rssi event 4855 * @dev: network device 4856 * @rssi_event: the triggered RSSI event 4857 * @gfp: context flags 4858 * 4859 * This function is called when a configured connection quality monitoring 4860 * rssi threshold reached event occurs. 4861 */ 4862 void cfg80211_cqm_rssi_notify(struct net_device *dev, 4863 enum nl80211_cqm_rssi_threshold_event rssi_event, 4864 gfp_t gfp); 4865 4866 /** 4867 * cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer 4868 * @dev: network device 4869 * @peer: peer's MAC address 4870 * @num_packets: how many packets were lost -- should be a fixed threshold 4871 * but probably no less than maybe 50, or maybe a throughput dependent 4872 * threshold (to account for temporary interference) 4873 * @gfp: context flags 4874 */ 4875 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 4876 const u8 *peer, u32 num_packets, gfp_t gfp); 4877 4878 /** 4879 * cfg80211_cqm_txe_notify - TX error rate event 4880 * @dev: network device 4881 * @peer: peer's MAC address 4882 * @num_packets: how many packets were lost 4883 * @rate: % of packets which failed transmission 4884 * @intvl: interval (in s) over which the TX failure threshold was breached. 4885 * @gfp: context flags 4886 * 4887 * Notify userspace when configured % TX failures over number of packets in a 4888 * given interval is exceeded. 4889 */ 4890 void cfg80211_cqm_txe_notify(struct net_device *dev, const u8 *peer, 4891 u32 num_packets, u32 rate, u32 intvl, gfp_t gfp); 4892 4893 /** 4894 * cfg80211_cqm_beacon_loss_notify - beacon loss event 4895 * @dev: network device 4896 * @gfp: context flags 4897 * 4898 * Notify userspace about beacon loss from the connected AP. 4899 */ 4900 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp); 4901 4902 /** 4903 * cfg80211_radar_event - radar detection event 4904 * @wiphy: the wiphy 4905 * @chandef: chandef for the current channel 4906 * @gfp: context flags 4907 * 4908 * This function is called when a radar is detected on the current chanenl. 4909 */ 4910 void cfg80211_radar_event(struct wiphy *wiphy, 4911 struct cfg80211_chan_def *chandef, gfp_t gfp); 4912 4913 /** 4914 * cfg80211_cac_event - Channel availability check (CAC) event 4915 * @netdev: network device 4916 * @chandef: chandef for the current channel 4917 * @event: type of event 4918 * @gfp: context flags 4919 * 4920 * This function is called when a Channel availability check (CAC) is finished 4921 * or aborted. This must be called to notify the completion of a CAC process, 4922 * also by full-MAC drivers. 4923 */ 4924 void cfg80211_cac_event(struct net_device *netdev, 4925 const struct cfg80211_chan_def *chandef, 4926 enum nl80211_radar_event event, gfp_t gfp); 4927 4928 4929 /** 4930 * cfg80211_gtk_rekey_notify - notify userspace about driver rekeying 4931 * @dev: network device 4932 * @bssid: BSSID of AP (to avoid races) 4933 * @replay_ctr: new replay counter 4934 * @gfp: allocation flags 4935 */ 4936 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 4937 const u8 *replay_ctr, gfp_t gfp); 4938 4939 /** 4940 * cfg80211_pmksa_candidate_notify - notify about PMKSA caching candidate 4941 * @dev: network device 4942 * @index: candidate index (the smaller the index, the higher the priority) 4943 * @bssid: BSSID of AP 4944 * @preauth: Whether AP advertises support for RSN pre-authentication 4945 * @gfp: allocation flags 4946 */ 4947 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 4948 const u8 *bssid, bool preauth, gfp_t gfp); 4949 4950 /** 4951 * cfg80211_rx_spurious_frame - inform userspace about a spurious frame 4952 * @dev: The device the frame matched to 4953 * @addr: the transmitter address 4954 * @gfp: context flags 4955 * 4956 * This function is used in AP mode (only!) to inform userspace that 4957 * a spurious class 3 frame was received, to be able to deauth the 4958 * sender. 4959 * Return: %true if the frame was passed to userspace (or this failed 4960 * for a reason other than not having a subscription.) 4961 */ 4962 bool cfg80211_rx_spurious_frame(struct net_device *dev, 4963 const u8 *addr, gfp_t gfp); 4964 4965 /** 4966 * cfg80211_rx_unexpected_4addr_frame - inform about unexpected WDS frame 4967 * @dev: The device the frame matched to 4968 * @addr: the transmitter address 4969 * @gfp: context flags 4970 * 4971 * This function is used in AP mode (only!) to inform userspace that 4972 * an associated station sent a 4addr frame but that wasn't expected. 4973 * It is allowed and desirable to send this event only once for each 4974 * station to avoid event flooding. 4975 * Return: %true if the frame was passed to userspace (or this failed 4976 * for a reason other than not having a subscription.) 4977 */ 4978 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 4979 const u8 *addr, gfp_t gfp); 4980 4981 /** 4982 * cfg80211_probe_status - notify userspace about probe status 4983 * @dev: the device the probe was sent on 4984 * @addr: the address of the peer 4985 * @cookie: the cookie filled in @probe_client previously 4986 * @acked: indicates whether probe was acked or not 4987 * @gfp: allocation flags 4988 */ 4989 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 4990 u64 cookie, bool acked, gfp_t gfp); 4991 4992 /** 4993 * cfg80211_report_obss_beacon - report beacon from other APs 4994 * @wiphy: The wiphy that received the beacon 4995 * @frame: the frame 4996 * @len: length of the frame 4997 * @freq: frequency the frame was received on 4998 * @sig_dbm: signal strength in mBm, or 0 if unknown 4999 * 5000 * Use this function to report to userspace when a beacon was 5001 * received. It is not useful to call this when there is no 5002 * netdev that is in AP/GO mode. 5003 */ 5004 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 5005 const u8 *frame, size_t len, 5006 int freq, int sig_dbm); 5007 5008 /** 5009 * cfg80211_reg_can_beacon - check if beaconing is allowed 5010 * @wiphy: the wiphy 5011 * @chandef: the channel definition 5012 * @iftype: interface type 5013 * 5014 * Return: %true if there is no secondary channel or the secondary channel(s) 5015 * can be used for beaconing (i.e. is not a radar channel etc.) 5016 */ 5017 bool cfg80211_reg_can_beacon(struct wiphy *wiphy, 5018 struct cfg80211_chan_def *chandef, 5019 enum nl80211_iftype iftype); 5020 5021 /** 5022 * cfg80211_reg_can_beacon_relax - check if beaconing is allowed with relaxation 5023 * @wiphy: the wiphy 5024 * @chandef: the channel definition 5025 * @iftype: interface type 5026 * 5027 * Return: %true if there is no secondary channel or the secondary channel(s) 5028 * can be used for beaconing (i.e. is not a radar channel etc.). This version 5029 * also checks if IR-relaxation conditions apply, to allow beaconing under 5030 * more permissive conditions. 5031 * 5032 * Requires the RTNL to be held. 5033 */ 5034 bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy, 5035 struct cfg80211_chan_def *chandef, 5036 enum nl80211_iftype iftype); 5037 5038 /* 5039 * cfg80211_ch_switch_notify - update wdev channel and notify userspace 5040 * @dev: the device which switched channels 5041 * @chandef: the new channel definition 5042 * 5043 * Caller must acquire wdev_lock, therefore must only be called from sleepable 5044 * driver context! 5045 */ 5046 void cfg80211_ch_switch_notify(struct net_device *dev, 5047 struct cfg80211_chan_def *chandef); 5048 5049 /* 5050 * cfg80211_ch_switch_started_notify - notify channel switch start 5051 * @dev: the device on which the channel switch started 5052 * @chandef: the future channel definition 5053 * @count: the number of TBTTs until the channel switch happens 5054 * 5055 * Inform the userspace about the channel switch that has just 5056 * started, so that it can take appropriate actions (eg. starting 5057 * channel switch on other vifs), if necessary. 5058 */ 5059 void cfg80211_ch_switch_started_notify(struct net_device *dev, 5060 struct cfg80211_chan_def *chandef, 5061 u8 count); 5062 5063 /** 5064 * ieee80211_operating_class_to_band - convert operating class to band 5065 * 5066 * @operating_class: the operating class to convert 5067 * @band: band pointer to fill 5068 * 5069 * Returns %true if the conversion was successful, %false otherwise. 5070 */ 5071 bool ieee80211_operating_class_to_band(u8 operating_class, 5072 enum nl80211_band *band); 5073 5074 /** 5075 * ieee80211_chandef_to_operating_class - convert chandef to operation class 5076 * 5077 * @chandef: the chandef to convert 5078 * @op_class: a pointer to the resulting operating class 5079 * 5080 * Returns %true if the conversion was successful, %false otherwise. 5081 */ 5082 bool ieee80211_chandef_to_operating_class(struct cfg80211_chan_def *chandef, 5083 u8 *op_class); 5084 5085 /* 5086 * cfg80211_tdls_oper_request - request userspace to perform TDLS operation 5087 * @dev: the device on which the operation is requested 5088 * @peer: the MAC address of the peer device 5089 * @oper: the requested TDLS operation (NL80211_TDLS_SETUP or 5090 * NL80211_TDLS_TEARDOWN) 5091 * @reason_code: the reason code for teardown request 5092 * @gfp: allocation flags 5093 * 5094 * This function is used to request userspace to perform TDLS operation that 5095 * requires knowledge of keys, i.e., link setup or teardown when the AP 5096 * connection uses encryption. This is optional mechanism for the driver to use 5097 * if it can automatically determine when a TDLS link could be useful (e.g., 5098 * based on traffic and signal strength for a peer). 5099 */ 5100 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 5101 enum nl80211_tdls_operation oper, 5102 u16 reason_code, gfp_t gfp); 5103 5104 /* 5105 * cfg80211_calculate_bitrate - calculate actual bitrate (in 100Kbps units) 5106 * @rate: given rate_info to calculate bitrate from 5107 * 5108 * return 0 if MCS index >= 32 5109 */ 5110 u32 cfg80211_calculate_bitrate(struct rate_info *rate); 5111 5112 /** 5113 * cfg80211_unregister_wdev - remove the given wdev 5114 * @wdev: struct wireless_dev to remove 5115 * 5116 * Call this function only for wdevs that have no netdev assigned, 5117 * e.g. P2P Devices. It removes the device from the list so that 5118 * it can no longer be used. It is necessary to call this function 5119 * even when cfg80211 requests the removal of the interface by 5120 * calling the del_virtual_intf() callback. The function must also 5121 * be called when the driver wishes to unregister the wdev, e.g. 5122 * when the device is unbound from the driver. 5123 * 5124 * Requires the RTNL to be held. 5125 */ 5126 void cfg80211_unregister_wdev(struct wireless_dev *wdev); 5127 5128 /** 5129 * struct cfg80211_ft_event - FT Information Elements 5130 * @ies: FT IEs 5131 * @ies_len: length of the FT IE in bytes 5132 * @target_ap: target AP's MAC address 5133 * @ric_ies: RIC IE 5134 * @ric_ies_len: length of the RIC IE in bytes 5135 */ 5136 struct cfg80211_ft_event_params { 5137 const u8 *ies; 5138 size_t ies_len; 5139 const u8 *target_ap; 5140 const u8 *ric_ies; 5141 size_t ric_ies_len; 5142 }; 5143 5144 /** 5145 * cfg80211_ft_event - notify userspace about FT IE and RIC IE 5146 * @netdev: network device 5147 * @ft_event: IE information 5148 */ 5149 void cfg80211_ft_event(struct net_device *netdev, 5150 struct cfg80211_ft_event_params *ft_event); 5151 5152 /** 5153 * cfg80211_get_p2p_attr - find and copy a P2P attribute from IE buffer 5154 * @ies: the input IE buffer 5155 * @len: the input length 5156 * @attr: the attribute ID to find 5157 * @buf: output buffer, can be %NULL if the data isn't needed, e.g. 5158 * if the function is only called to get the needed buffer size 5159 * @bufsize: size of the output buffer 5160 * 5161 * The function finds a given P2P attribute in the (vendor) IEs and 5162 * copies its contents to the given buffer. 5163 * 5164 * Return: A negative error code (-%EILSEQ or -%ENOENT) if the data is 5165 * malformed or the attribute can't be found (respectively), or the 5166 * length of the found attribute (which can be zero). 5167 */ 5168 int cfg80211_get_p2p_attr(const u8 *ies, unsigned int len, 5169 enum ieee80211_p2p_attr_id attr, 5170 u8 *buf, unsigned int bufsize); 5171 5172 /** 5173 * ieee80211_ie_split_ric - split an IE buffer according to ordering (with RIC) 5174 * @ies: the IE buffer 5175 * @ielen: the length of the IE buffer 5176 * @ids: an array with element IDs that are allowed before 5177 * the split 5178 * @n_ids: the size of the element ID array 5179 * @after_ric: array IE types that come after the RIC element 5180 * @n_after_ric: size of the @after_ric array 5181 * @offset: offset where to start splitting in the buffer 5182 * 5183 * This function splits an IE buffer by updating the @offset 5184 * variable to point to the location where the buffer should be 5185 * split. 5186 * 5187 * It assumes that the given IE buffer is well-formed, this 5188 * has to be guaranteed by the caller! 5189 * 5190 * It also assumes that the IEs in the buffer are ordered 5191 * correctly, if not the result of using this function will not 5192 * be ordered correctly either, i.e. it does no reordering. 5193 * 5194 * The function returns the offset where the next part of the 5195 * buffer starts, which may be @ielen if the entire (remainder) 5196 * of the buffer should be used. 5197 */ 5198 size_t ieee80211_ie_split_ric(const u8 *ies, size_t ielen, 5199 const u8 *ids, int n_ids, 5200 const u8 *after_ric, int n_after_ric, 5201 size_t offset); 5202 5203 /** 5204 * ieee80211_ie_split - split an IE buffer according to ordering 5205 * @ies: the IE buffer 5206 * @ielen: the length of the IE buffer 5207 * @ids: an array with element IDs that are allowed before 5208 * the split 5209 * @n_ids: the size of the element ID array 5210 * @offset: offset where to start splitting in the buffer 5211 * 5212 * This function splits an IE buffer by updating the @offset 5213 * variable to point to the location where the buffer should be 5214 * split. 5215 * 5216 * It assumes that the given IE buffer is well-formed, this 5217 * has to be guaranteed by the caller! 5218 * 5219 * It also assumes that the IEs in the buffer are ordered 5220 * correctly, if not the result of using this function will not 5221 * be ordered correctly either, i.e. it does no reordering. 5222 * 5223 * The function returns the offset where the next part of the 5224 * buffer starts, which may be @ielen if the entire (remainder) 5225 * of the buffer should be used. 5226 */ 5227 static inline size_t ieee80211_ie_split(const u8 *ies, size_t ielen, 5228 const u8 *ids, int n_ids, size_t offset) 5229 { 5230 return ieee80211_ie_split_ric(ies, ielen, ids, n_ids, NULL, 0, offset); 5231 } 5232 5233 /** 5234 * cfg80211_report_wowlan_wakeup - report wakeup from WoWLAN 5235 * @wdev: the wireless device reporting the wakeup 5236 * @wakeup: the wakeup report 5237 * @gfp: allocation flags 5238 * 5239 * This function reports that the given device woke up. If it 5240 * caused the wakeup, report the reason(s), otherwise you may 5241 * pass %NULL as the @wakeup parameter to advertise that something 5242 * else caused the wakeup. 5243 */ 5244 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 5245 struct cfg80211_wowlan_wakeup *wakeup, 5246 gfp_t gfp); 5247 5248 /** 5249 * cfg80211_crit_proto_stopped() - indicate critical protocol stopped by driver. 5250 * 5251 * @wdev: the wireless device for which critical protocol is stopped. 5252 * @gfp: allocation flags 5253 * 5254 * This function can be called by the driver to indicate it has reverted 5255 * operation back to normal. One reason could be that the duration given 5256 * by .crit_proto_start() has expired. 5257 */ 5258 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp); 5259 5260 /** 5261 * ieee80211_get_num_supported_channels - get number of channels device has 5262 * @wiphy: the wiphy 5263 * 5264 * Return: the number of channels supported by the device. 5265 */ 5266 unsigned int ieee80211_get_num_supported_channels(struct wiphy *wiphy); 5267 5268 /** 5269 * cfg80211_check_combinations - check interface combinations 5270 * 5271 * @wiphy: the wiphy 5272 * @num_different_channels: the number of different channels we want 5273 * to use for verification 5274 * @radar_detect: a bitmap where each bit corresponds to a channel 5275 * width where radar detection is needed, as in the definition of 5276 * &struct ieee80211_iface_combination.@radar_detect_widths 5277 * @iftype_num: array with the numbers of interfaces of each interface 5278 * type. The index is the interface type as specified in &enum 5279 * nl80211_iftype. 5280 * 5281 * This function can be called by the driver to check whether a 5282 * combination of interfaces and their types are allowed according to 5283 * the interface combinations. 5284 */ 5285 int cfg80211_check_combinations(struct wiphy *wiphy, 5286 const int num_different_channels, 5287 const u8 radar_detect, 5288 const int iftype_num[NUM_NL80211_IFTYPES]); 5289 5290 /** 5291 * cfg80211_iter_combinations - iterate over matching combinations 5292 * 5293 * @wiphy: the wiphy 5294 * @num_different_channels: the number of different channels we want 5295 * to use for verification 5296 * @radar_detect: a bitmap where each bit corresponds to a channel 5297 * width where radar detection is needed, as in the definition of 5298 * &struct ieee80211_iface_combination.@radar_detect_widths 5299 * @iftype_num: array with the numbers of interfaces of each interface 5300 * type. The index is the interface type as specified in &enum 5301 * nl80211_iftype. 5302 * @iter: function to call for each matching combination 5303 * @data: pointer to pass to iter function 5304 * 5305 * This function can be called by the driver to check what possible 5306 * combinations it fits in at a given moment, e.g. for channel switching 5307 * purposes. 5308 */ 5309 int cfg80211_iter_combinations(struct wiphy *wiphy, 5310 const int num_different_channels, 5311 const u8 radar_detect, 5312 const int iftype_num[NUM_NL80211_IFTYPES], 5313 void (*iter)(const struct ieee80211_iface_combination *c, 5314 void *data), 5315 void *data); 5316 5317 /* 5318 * cfg80211_stop_iface - trigger interface disconnection 5319 * 5320 * @wiphy: the wiphy 5321 * @wdev: wireless device 5322 * @gfp: context flags 5323 * 5324 * Trigger interface to be stopped as if AP was stopped, IBSS/mesh left, STA 5325 * disconnected. 5326 * 5327 * Note: This doesn't need any locks and is asynchronous. 5328 */ 5329 void cfg80211_stop_iface(struct wiphy *wiphy, struct wireless_dev *wdev, 5330 gfp_t gfp); 5331 5332 /** 5333 * cfg80211_shutdown_all_interfaces - shut down all interfaces for a wiphy 5334 * @wiphy: the wiphy to shut down 5335 * 5336 * This function shuts down all interfaces belonging to this wiphy by 5337 * calling dev_close() (and treating non-netdev interfaces as needed). 5338 * It shouldn't really be used unless there are some fatal device errors 5339 * that really can't be recovered in any other way. 5340 * 5341 * Callers must hold the RTNL and be able to deal with callbacks into 5342 * the driver while the function is running. 5343 */ 5344 void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy); 5345 5346 /** 5347 * wiphy_ext_feature_set - set the extended feature flag 5348 * 5349 * @wiphy: the wiphy to modify. 5350 * @ftidx: extended feature bit index. 5351 * 5352 * The extended features are flagged in multiple bytes (see 5353 * &struct wiphy.@ext_features) 5354 */ 5355 static inline void wiphy_ext_feature_set(struct wiphy *wiphy, 5356 enum nl80211_ext_feature_index ftidx) 5357 { 5358 u8 *ft_byte; 5359 5360 ft_byte = &wiphy->ext_features[ftidx / 8]; 5361 *ft_byte |= BIT(ftidx % 8); 5362 } 5363 5364 /** 5365 * wiphy_ext_feature_isset - check the extended feature flag 5366 * 5367 * @wiphy: the wiphy to modify. 5368 * @ftidx: extended feature bit index. 5369 * 5370 * The extended features are flagged in multiple bytes (see 5371 * &struct wiphy.@ext_features) 5372 */ 5373 static inline bool 5374 wiphy_ext_feature_isset(struct wiphy *wiphy, 5375 enum nl80211_ext_feature_index ftidx) 5376 { 5377 u8 ft_byte; 5378 5379 ft_byte = wiphy->ext_features[ftidx / 8]; 5380 return (ft_byte & BIT(ftidx % 8)) != 0; 5381 } 5382 5383 /* ethtool helper */ 5384 void cfg80211_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info); 5385 5386 /* Logging, debugging and troubleshooting/diagnostic helpers. */ 5387 5388 /* wiphy_printk helpers, similar to dev_printk */ 5389 5390 #define wiphy_printk(level, wiphy, format, args...) \ 5391 dev_printk(level, &(wiphy)->dev, format, ##args) 5392 #define wiphy_emerg(wiphy, format, args...) \ 5393 dev_emerg(&(wiphy)->dev, format, ##args) 5394 #define wiphy_alert(wiphy, format, args...) \ 5395 dev_alert(&(wiphy)->dev, format, ##args) 5396 #define wiphy_crit(wiphy, format, args...) \ 5397 dev_crit(&(wiphy)->dev, format, ##args) 5398 #define wiphy_err(wiphy, format, args...) \ 5399 dev_err(&(wiphy)->dev, format, ##args) 5400 #define wiphy_warn(wiphy, format, args...) \ 5401 dev_warn(&(wiphy)->dev, format, ##args) 5402 #define wiphy_notice(wiphy, format, args...) \ 5403 dev_notice(&(wiphy)->dev, format, ##args) 5404 #define wiphy_info(wiphy, format, args...) \ 5405 dev_info(&(wiphy)->dev, format, ##args) 5406 5407 #define wiphy_debug(wiphy, format, args...) \ 5408 wiphy_printk(KERN_DEBUG, wiphy, format, ##args) 5409 5410 #define wiphy_dbg(wiphy, format, args...) \ 5411 dev_dbg(&(wiphy)->dev, format, ##args) 5412 5413 #if defined(VERBOSE_DEBUG) 5414 #define wiphy_vdbg wiphy_dbg 5415 #else 5416 #define wiphy_vdbg(wiphy, format, args...) \ 5417 ({ \ 5418 if (0) \ 5419 wiphy_printk(KERN_DEBUG, wiphy, format, ##args); \ 5420 0; \ 5421 }) 5422 #endif 5423 5424 /* 5425 * wiphy_WARN() acts like wiphy_printk(), but with the key difference 5426 * of using a WARN/WARN_ON to get the message out, including the 5427 * file/line information and a backtrace. 5428 */ 5429 #define wiphy_WARN(wiphy, format, args...) \ 5430 WARN(1, "wiphy: %s\n" format, wiphy_name(wiphy), ##args); 5431 5432 #endif /* __NET_CFG80211_H */ 5433